v2 version

.gitignore

@@ -33,5 +33,6 @@ _testmain.go
 upload
 upload/*
 .vscode
-
+tools/pdcfg/pdcfg
+device/device
 *.out

pkg/klink/klink.go

@@ -1 +1,85 @@
 package klink
+
+import "github.com/gogf/gf/encoding/gjson"
+
+type PacketAction string
+
+const (
+	DevSendAction        PacketAction = "devSend"        // 设备上报数据
+	BatchDevSendAction   PacketAction = "batchDevSend"   // 网关批量上报设备数据
+	CloudSendAction      PacketAction = "cloudSend"      // 云端给设备下发指令
+	ReportFirmwareAction PacketAction = "reportFirmware" // 设备上报固件信息
+	DevLoginAction       PacketAction = "devLogin"       // 子设备上线
+	DevLogoutAction      PacketAction = "devLogout"      // 子设备下线
+)
+
+// DevLogin 子设备上线
+type DevLogin struct {
+	Action      string `json:"action"`
+	MsgId       int64  `json:"msgId"`
+	DeviceCode  string `json:"deviceCode"`
+	SubDeviceId string `json:"subDeviceId"`
+	Timestamp   int64  `json:"timestamp"`
+}
+
+// DevLogout 子设备下线
+type DevLogout struct {
+	Action      string `json:"action"`
+	MsgId       int64  `json:"msgId"`
+	DeviceCode  string `json:"deviceCode"`
+	SubDeviceId string `json:"subDeviceId"`
+	Timestamp   int64  `json:"timestamp"`
+}
+
+// DevSend 设备上报数据帧
+type DevSend struct {
+	Action      string       `json:"action"`
+	MsgId       int64        `json:"msgId"`
+	DeviceCode  string       `json:"deviceCode"`
+	SubDeviceId string       `json:"subDeviceId"`
+	Data        *DevSendData `json:"data"`
+	Timestamp   int64        `json:"timestamp"`
+}
+
+func (d *DevSend) Marshal() ([]byte, error) {
+	return gjson.New(d).ToJson()
+}
+
+func (d *DevSend) UnMarshal(bytes []byte) error {
+	j, err := gjson.DecodeToJson(bytes)
+	if err != nil {
+		return err
+	}
+	return j.Struct(d)
+}
+
+type DevSendData struct {
+	Cmd    string      `json:"cmd"`
+	Params *gjson.Json `json:"params"`
+}
+
+type CloudSendData struct {
+	Cmd    string      `json:"cmd"`
+	Params *gjson.Json `json:"params"`
+}
+
+type CloudSend struct {
+	Action      string         `json:"action"`
+	MsgId       int64          `json:"msgId"`
+	DeviceCode  string         `json:"deviceCode"`
+	Timestamp   int64          `json:"timestamp"`
+	Data        *CloudSendData `json:"data"`
+	SubDeviceId string         `json:"subDeviceId"`
+}
+
+func (c *CloudSend) Marshal() ([]byte, error) {
+	return gjson.New(c).ToJson()
+}
+
+func (c *CloudSend) UnMarshal(bytes []byte) error {
+	j, err := gjson.DecodeToJson(bytes)
+	if err != nil {
+		return err
+	}
+	return j.Struct(c)
+}

pkg/klink/klink_test.go

@@ -1 +1,36 @@
 package klink
+
+import (
+	"github.com/gogf/gf/encoding/gjson"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestDevSend_Marshal(t *testing.T) {
+	d := &DevSend{
+		Action:     "devSend",
+		MsgId:      0,
+		DeviceCode: "11111",
+		Data: &DevSendData{
+			Cmd:    "powerOn",
+			Params: gjson.New(`{}`),
+		},
+	}
+	b, err := d.Marshal()
+	if err != nil {
+		t.Fatal(err)
+	}
+	newD := &DevSend{}
+	err = newD.UnMarshal(b)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, d.Action, newD.Action)
+}
+
+func TestDevSend_UnMarshal(t *testing.T) {
+	j := gjson.New(`{"action":"devSend","data":{"cmd":"powerOn","params":{"power":1}},"deviceCode":"5566","msgId":1,"timestamp":1662432310}`)
+	params := j.GetJson("data")
+	t.Log(params.GetMap("params"))
+
+}

pkg/mqtt/connection.go

@@ -36,6 +36,7 @@ type Connection struct {
 	Token           []byte
 	VendorId        string
 	closeChan       chan struct{}
+	DeviceCode      string
 }
 
 // NewConnection create a connection
@@ -180,6 +181,7 @@ func (c *Connection) RcvMsgFromClient() {
 			}
 			c.DeviceID = device.RecordId
 			c.VendorId = device.VendorID
+			c.DeviceCode = device.DeviceIdentifier
 			token, err := hex.DecodeString(msg.Password)
 			if err != nil {
 				server.Log.Errorf("token format error : %v", err)
@@ -201,13 +203,13 @@ func (c *Connection) RcvMsgFromClient() {
 				return
 			}
 			args := rpcs.ArgsGetOnline{
-				Id:                device.RecordId,
+				Id:                device.DeviceIdentifier,
 				ClientIP:          host,
 				AccessRPCHost:     server.GetRPCHost(),
 				HeartbeatInterval: uint32(c.KeepAlive),
 			}
 
-			c.Mgr.AddConn(c.DeviceID, c)
+			c.Mgr.AddConn(c.DeviceCode, c)
 			connack := &ConnAck{
 				ReturnCode: ret,
 			}
@@ -226,7 +228,10 @@ func (c *Connection) RcvMsgFromClient() {
 
 		case *Publish:
 			server.Log.Infof("%s, publish topic: %s", host, msg.TopicName)
-			_ = c.Mgr.PublishMessage2Server(c.DeviceID, c.VendorId, msg)
+			err = c.Mgr.PublishMessage2Server(c.DeviceCode, c.VendorId, msg)
+			if err != nil {
+				server.Log.Errorf("PublishMessage2Server error:%s", err.Error())
+			}
 			if msg.QosLevel.IsAtLeastOnce() {
 				server.Log.Infof("publish ack send now")
 				publishack := &PubAck{MessageID: msg.MessageID}
@@ -237,7 +242,7 @@ func (c *Connection) RcvMsgFromClient() {
 				c.Submit(publishRec)
 			}
 
-			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceID)
+			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceCode)
 			if err != nil {
 				server.Log.Errorf("%s, heartbeat set error %s, close now...", host, err)
 				c.Close()
@@ -247,7 +252,7 @@ func (c *Connection) RcvMsgFromClient() {
 		case *PubAck:
 			server.Log.Infof("%s, comes publish ack", host)
 			c.confirmPublish(msg.MessageID)
-			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceID)
+			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceCode)
 			if err != nil {
 				server.Log.Errorf("%s, heartbeat set error %s, close now...", host, err)
 				c.Close()
@@ -267,7 +272,7 @@ func (c *Connection) RcvMsgFromClient() {
 		case *PubComp:
 			server.Log.Infof("%s, comes publish comp", host)
 			c.confirmPublish(msg.MessageID)
-			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceID)
+			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceCode)
 			if err != nil {
 				server.Log.Errorf("%s, heartbeat set error %s, close now...", host, err)
 				c.Close()
@@ -277,7 +282,7 @@ func (c *Connection) RcvMsgFromClient() {
 		case *PingReq:
 			server.Log.Infof("%s, ping req comes", host)
 			pingrsp := &PingResp{}
-			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceID)
+			err := c.Mgr.Provider.OnDeviceHeartBeat(c.DeviceCode)
 			if err != nil {
 				server.Log.Errorf("%s, heartbeat set error %s, close now...", host, err)
 				c.Close()

pkg/mqtt/manager.go

@@ -1,6 +1,7 @@
 package mqtt
 
 import (
+	"github.com/gogf/gf/encoding/gjson"
 	"net"
 	"sparrow/pkg/server"
 	"sync"
@@ -74,7 +75,11 @@ func (m *Manager) PublishMessage2Device(DeviceID string, msg *Publish, timeout t
 func (m *Manager) PublishMessage2Server(DeviceID string, vendorId string, msg *Publish) error {
 	topic := msg.TopicName
 	payload := msg.Payload.(BytesPayload)
-	m.Provider.OnDeviceMessage(DeviceID, vendorId, topic, payload)
+	if j, err := gjson.DecodeToJson(payload); err == nil {
+		m.Provider.OnDeviceMessage(DeviceID, vendorId, topic, j)
+	} else {
+		return err
+	}
 	return nil
 }
 

pkg/mqtt/provider.go

@@ -1,6 +1,7 @@
 package mqtt
 
 import (
+	"github.com/gogf/gf/encoding/gjson"
 	"sparrow/pkg/rpcs"
 )
 
@@ -9,5 +10,5 @@ type Provider interface {
 	OnDeviceOnline(args rpcs.ArgsGetOnline) error
 	OnDeviceOffline(deviceid string) error
 	OnDeviceHeartBeat(deviceid string) error
-	OnDeviceMessage(deviceid, vendorId string, msgtype string, message []byte)
+	OnDeviceMessage(deviceid, vendorId string, msgtype string, message *gjson.Json)
 }

pkg/online/online.go

@@ -77,7 +77,7 @@ func (mgr *Manager) GetOnline(id string, status Status) error {
 
 func (mgr *Manager) SetHeartbeat(id string) error {
 	status, err := mgr.GetStatus(id)
-	if err != nil {
+	if err != nil && err != redis.ErrNil {
 		return err
 	}
 

pkg/rpcs/access.go

@@ -2,7 +2,6 @@ package rpcs
 
 import (
 	"sparrow/pkg/protocol"
-	"sparrow/pkg/tlv"
 )
 
 type ArgsSetStatus struct {
@@ -18,10 +17,9 @@ type ReplyGetStatus struct {
 
 type ArgsSendCommand struct {
 	DeviceId  string
-	SubDevice uint16
-	No        uint16
-	Priority  uint16
+	SubDevice string
+	Cmd       string
 	WaitTime  uint32
-	Params    []tlv.TLV
+	Params    map[string]interface{}
 }
 type ReplySendCommand ReplyEmptyResult

pkg/rpcs/common.go

@@ -13,4 +13,5 @@ const (
 	DeviceManagerName  = "deviceManager"
 	ControllerName     = "controller"
 	HttpAccessName     = "HTTPAccess"
+	ShadowServiceName  = "ShadowServer"
 )

pkg/rpcs/controller.go

@@ -1,24 +1,24 @@
 package rpcs
 
 import (
-	"sparrow/pkg/protocol"
-	"sparrow/pkg/tlv"
+	"sparrow/pkg/klink"
 )
 
 type ArgsOnStatus struct {
-	DeviceId  string
-	Timestamp uint64
-	SubData   []protocol.SubData
-	VendorId  string
+	DeviceId    string
+	Timestamp   uint64
+	SubData     []byte
+	VendorId    string
+	Action      klink.PacketAction
+	SubDeviceId string
 }
 type ReplyOnStatus ReplyEmptyResult
 
 type ArgsOnEvent struct {
-	DeviceId  string
-	TimeStamp uint64
-	SubDevice uint16
-	No        uint16
-	Priority  uint16
-	Params    []tlv.TLV
+	VendorId    string
+	DeviceId    string
+	TimeStamp   uint64
+	SubDeviceId string
+	SubData     []byte
 }
 type ReplyOnEvent ReplyEmptyResult

pkg/rpcs/shadowservice.go

@@ -1 +1,10 @@
 package rpcs
+
+type ArgsDeviceReport struct {
+	DeviceCode string
+	Data       string
+}
+
+type DeviceDesiredReply struct {
+	Data []byte
+}

pkg/rule/rule_action.go

@@ -52,25 +52,25 @@ func performRuleAction(target string, action string) error {
 	sendType := parts[2]
 	switch sendType {
 	case "command":
-		command, err := config.MapToCommand(m)
-		if err != nil {
-			server.Log.Errorf("action format error: %v", err)
-			return err
-		}
+		//command, err := config.MapToCommand(m)
+		//if err != nil {
+		//	server.Log.Errorf("action format error: %v", err)
+		//	return err
+		//}
 
-		cmdargs := rpcs.ArgsSendCommand{
-			DeviceId:  device.RecordId,
-			SubDevice: uint16(command.Head.SubDeviceid),
-			No:        uint16(command.Head.No),
-			WaitTime:  uint32(3000),
-			Params:    command.Params,
-		}
-		cmdreply := rpcs.ReplySendCommand{}
-		err = server.RPCCallByName(nil, rpcs.ControllerName, "Controller.SendCommand", cmdargs, &cmdreply)
-		if err != nil {
-			server.Log.Errorf("send device command error: %v", err)
-			return err
-		}
+		//cmdargs := rpcs.ArgsSendCommand{
+		//	DeviceId:  device.RecordId,
+		//	SubDevice: uint16(command.Head.SubDeviceid),
+		//	No:        uint16(command.Head.No),
+		//	WaitTime:  uint32(3000),
+		//	Params:    command.Params,
+		//}
+		//cmdreply := rpcs.ReplySendCommand{}
+		//err = server.RPCCallByName(nil, rpcs.ControllerName, "Controller.SendCommand", cmdargs, &cmdreply)
+		//if err != nil {
+		//	server.Log.Errorf("send device command error: %v", err)
+		//	return err
+		//}
 	case "status":
 		status, err := config.MapToStatus(m)
 		if err != nil {

pkg/server/rpc_client.go

@@ -63,6 +63,7 @@ func (client *RPCClient) Call(severName string, serverMethod string, args interf
 		}
 		//span.SetTag("server.method", serverMethod)
 		//span.SetTag("server.addr", addr)
+		fmt.Printf("%v++++++++++++++++\r\n", mapkey)
 		err = rpcCallWithReconnect(client.clients[mapkey], addr, serverMethod, args, reply)
 		if err != nil {
 			Log.WithField("method", serverMethod).Warnf("RpcCallWithReconnect error : %s", err)

pkg/server/server_manager.go

@@ -121,7 +121,7 @@ func (mgr *ServerManager) RegisterServer() error {
 		mgr.keepAliveChan = leaseRespChan
 	}
 	// print common keys info
-	Log.Infof("RegisterServer is done. leaseId is %v\n", mgr.leaseId)
+	Log.Debugf("RegisterServer is done. leaseId is %v\n", mgr.leaseId)
 	go func() {
 		for {
 			<-mgr.keepAliveChan
@@ -156,7 +156,7 @@ func (mgr *ServerManager) UpdateServerHosts() error {
 		servers[name][host] = append(servers[name][host], addr)
 	}
 	mgr.mapServers = servers
-	Log.Infof("UpdateServerHosts is done: %v", mgr.mapServers)
+	Log.Debugf("UpdateServerHosts is done: %v", mgr.mapServers)
 	return nil
 
 }

run.sh

@@ -1,5 +1,5 @@
 export GOPATH=/Users/lijian/go
-LEVEL="debug"
+LEVEL="error"
 sudo killall -9 httpaccess registry apiprovider devicemanager controller mqttaccess knowoapi fileaccess coapaccess
 
 # start services
@@ -10,7 +10,7 @@ $GOPATH/bin/apiprovider -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -httphost
 $GOPATH/bin/devicemanager -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -rpchost internal:20033 &
 $GOPATH/bin/controller -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -rpchost internal:20032  &
 #$GOPATH/bin/mqttaccess -etcd http://localhost:2379 -loglevel debug  -rpchost localhost:20030 -tcphost internal:1883 -usetls -keyfile $GOPATH/src/github.com/PandoCloud/pando-cloud/pkg/server/testdata/key.pem -cafile $GOPATH/src/github.com/PandoCloud/pando-cloud/pkg/server/testdata/cert.pem &
-$GOPATH/bin/mqttaccess -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -rpchost internal:20030 -tcphost internal:1883 &
+$GOPATH/bin/mqttaccess -etcd http://127.0.0.1:2379 -loglevel debug  -rpchost internal:20030 -tcphost internal:1883 &
 $GOPATH/bin/knowoapi -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -httphost internal:8889 -dbhost 106.14.63.46 -dbname iot-hub -dbport 3306 -dbuser root -dbpass Lijian405! -aeskey ABCDEFGHIJKLMNOPABCDEFGHIJKLMNOP &
 $GOPATH/bin/fileaccess -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -rpchost internal:20035 -httphost internal:9000 &
 $GOPATH/bin/coapaccess -etcd http://127.0.0.1:2379 -loglevel $LEVEL  -udphost internal:56883 &

services/apiprovider/actions.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"github.com/gogf/gf/encoding/gjson"
 	"sparrow/pkg/productconfig"
 	"sparrow/pkg/rpcs"
 
@@ -207,7 +208,7 @@ func SendCommandToDevice(device *models.Device, config *productconfig.ProductCon
 	server.Log.Printf("ACTION SendCommandToDevice, identifier:: %v, request: %v, timeout: %v",
 		device.DeviceIdentifier, req.Body, timeout)
 
-	var args interface{}
+	var args map[string]interface{}
 	decoder := json.NewDecoder(req.Body)
 	err := decoder.Decode(&args)
 	if err != nil {
@@ -215,24 +216,13 @@ func SendCommandToDevice(device *models.Device, config *productconfig.ProductCon
 		return
 	}
 
-	m, ok := args.(map[string]interface{})
-	if !ok {
-		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
-		return
-	}
-
-	command, err := config.MapToCommand(m)
-	if err != nil {
-		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
-		return
-	}
-
+	j := gjson.New(args)
 	cmdargs := rpcs.ArgsSendCommand{
-		DeviceId:  device.RecordId,
-		SubDevice: uint16(command.Head.SubDeviceid),
-		No:        uint16(command.Head.No),
+		DeviceId:  device.DeviceIdentifier,
+		SubDevice: j.GetString("subDeviceId"),
 		WaitTime:  uint32(defaultTimeOut),
-		Params:    command.Params,
+		Params:    j.GetMap("data.params"),
+		Cmd:       j.GetString("data.cmd"),
 	}
 	cmdreply := rpcs.ReplySendCommand{}
 

services/apiprovider/middleware.go

@@ -2,64 +2,61 @@ package main
 
 import (
 	"errors"
+	"github.com/go-martini/martini"
+	"github.com/martini-contrib/render"
 	"net/http"
 	"sparrow/pkg/models"
 	"sparrow/pkg/productconfig"
 	"sparrow/pkg/rpcs"
 	"sparrow/pkg/server"
-	"strconv"
-	"strings"
-
-	"github.com/go-martini/martini"
-	"github.com/martini-contrib/render"
 )
 
 func checkAppDomain(domain string, identifier string) error {
-	domainPieces := strings.Split(domain, "/")
-	identifierPieces := strings.Split(identifier, "-")
-	if len(domainPieces) == 0 {
-		return errors.New("wrong app domain format.")
-	}
-	if len(identifierPieces) != 3 {
-		return errors.New("wrong identifier format.")
-	}
-	devvendorid, err := strconv.ParseUint(identifierPieces[0], 16, 64)
-	if err != nil {
-		return errors.New("wrong vendor format.")
-	}
-	devproductid, err := strconv.ParseUint(identifierPieces[1], 16, 64)
-	if err != nil {
-		return errors.New("wrong product format.")
-	}
-
-	if len(domainPieces) == 1 {
-		if domainPieces[0] != "*" {
-			return errors.New("wrong app domain " + domainPieces[0])
-		}
-		return nil
-	}
-
-	if len(domainPieces) == 2 {
-		id, err := strconv.ParseUint(domainPieces[1], 10, 64)
-		if err != nil {
-			return errors.New("wrong app domain format..")
-		}
-		if domainPieces[0] == "vendor" {
-			if id != devvendorid {
-				return errors.New("app has no access right on device.")
-			}
-		} else if domainPieces[0] == "product" {
-			if id != devproductid {
-				return errors.New("app has no access right on device.")
-			}
-		} else {
-			return errors.New("wrong app domain" + domain)
-		}
-	}
-
-	if len(domainPieces) > 2 {
-		return errors.New("wrong app domain" + domainPieces[0])
-	}
+	//domainPieces := strings.Split(domain, "/")
+	//identifierPieces := strings.Split(identifier, "-")
+	//if len(domainPieces) == 0 {
+	//	return errors.New("wrong app domain format.")
+	//}
+	//if len(identifierPieces) != 3 {
+	//	return errors.New("wrong identifier format.")
+	//}
+	//devvendorid, err := strconv.ParseUint(identifierPieces[0], 16, 64)
+	//if err != nil {
+	//	return errors.New("wrong vendor format.")
+	//}
+	//devproductid, err := strconv.ParseUint(identifierPieces[1], 16, 64)
+	//if err != nil {
+	//	return errors.New("wrong product format.")
+	//}
+	//
+	//if len(domainPieces) == 1 {
+	//	if domainPieces[0] != "*" {
+	//		return errors.New("wrong app domain " + domainPieces[0])
+	//	}
+	//	return nil
+	//}
+	//
+	//if len(domainPieces) == 2 {
+	//	id, err := strconv.ParseUint(domainPieces[1], 10, 64)
+	//	if err != nil {
+	//		return errors.New("wrong app domain format..")
+	//	}
+	//	if domainPieces[0] == "vendor" {
+	//		if id != devvendorid {
+	//			return errors.New("app has no access right on device.")
+	//		}
+	//	} else if domainPieces[0] == "product" {
+	//		if id != devproductid {
+	//			return errors.New("app has no access right on device.")
+	//		}
+	//	} else {
+	//		return errors.New("wrong app domain" + domain)
+	//	}
+	//}
+	//
+	//if len(domainPieces) > 2 {
+	//	return errors.New("wrong app domain" + domainPieces[0])
+	//}
 
 	return nil
 }
@@ -101,7 +98,7 @@ func CheckDeviceOnline(context martini.Context, params martini.Params, req *http
 	}
 
 	onlineargs := rpcs.ArgsGetDeviceOnlineStatus{
-		Id: device.RecordId,
+		Id: device.DeviceIdentifier,
 	}
 	onlinereply := rpcs.ReplyGetDeviceOnlineStatus{}
 	err = server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceOnlineStatus", onlineargs, &onlinereply)

services/apiprovider/notifier.go

@@ -97,9 +97,9 @@ func (n *Notifier) reportEvent(event rpcs.ArgsOnEvent) error {
 	}
 
 	ev := &protocol.Event{}
-	ev.Head.No = event.No
-	ev.Head.SubDeviceid = event.SubDevice
-	ev.Params = event.Params
+	//ev.Head.No = event.No
+	//ev.Head.SubDeviceid = event.SubDevice
+	// ev.Params = event.Params
 
 	m, err := c.EventToMap(ev)
 	if err != nil {

services/controller/controller.go

@@ -1,13 +1,12 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
+	"github.com/gogf/gf/encoding/gjson"
 	"github.com/gogf/gf/os/grpool"
 	"github.com/gogf/gf/util/guid"
 	"sparrow/pkg/actors"
-	"sparrow/pkg/models"
-	"sparrow/pkg/productconfig"
+	"sparrow/pkg/klink"
 	"sparrow/pkg/protocol"
 	"sparrow/pkg/queue"
 	"sparrow/pkg/queue/msgQueue"
@@ -83,6 +82,15 @@ func (c *Controller) OnStatus(args rpcs.ArgsOnStatus, reply *rpcs.ReplyOnStatus)
 	if err != nil {
 		return err
 	}
+	//reportArgs := &rpcs.ArgsDeviceReport{
+	//	DeviceCode: args.DeviceId,
+	//	Data:       data,
+	//}
+	//var reportReply *rpcs.ReplyEmptyResult
+	//if err = server.RPCCallByName(context.Background(), rpcs.ShadowServiceName,
+	//	"ShadowServer.DeviceReport", reportArgs, reportReply); err != nil {
+	//	server.Log.Error(err)
+	//}
 	msg := &protocol.Message{
 		Id:       guid.S(),
 		Ts:       &t,
@@ -90,8 +98,9 @@ func (c *Controller) OnStatus(args rpcs.ArgsOnStatus, reply *rpcs.ReplyOnStatus)
 		Data:     data,
 		Callback: nil,
 		MetaData: map[string]interface{}{
-			"tenant_id": args.VendorId,
-			"device_id": args.DeviceId,
+			"tenant_id":     args.VendorId,
+			"device_id":     args.DeviceId,
+			"sub_device_id": args.SubDeviceId,
 		},
 		Originator: "device",
 	}
@@ -103,96 +112,68 @@ func (c *Controller) OnStatus(args rpcs.ArgsOnStatus, reply *rpcs.ReplyOnStatus)
 	if err != nil {
 		return err
 	}
-	g.Headers.Put("tanant_id", []byte(args.VendorId))
+	g.Headers.Put("tenant_id", []byte(args.VendorId))
 	return c.producer.Send(tpi, g, nil)
 }
 
 func (c *Controller) processStatusToQueue(args rpcs.ArgsOnStatus) (string, error) {
-	var result string
-	device := &models.Device{}
-	err := server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindDeviceByRecordId", &rpcs.ArgsDeviceAuth{DeviceID: args.DeviceId}, device)
+	result := gjson.New(nil)
+	j, err := gjson.DecodeToJson(args.SubData)
 	if err != nil {
-		server.Log.Errorf("find device error : %v", err)
-		return result, err
-	}
-
-	product := &models.Product{}
-	err = server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindProduct", &device.ProductID, product)
-	if err != nil {
-		server.Log.Errorf("find product error : %v", err)
-		return result, err
-	}
-
-	pc, err := productconfig.New(product.ProductConfig)
-	if err != nil {
-		server.Log.Errorf("product config error : %v", err)
-		return result, err
-	}
-	ev := &protocol.Data{}
-	ev.SubData = args.SubData
-	m, err := pc.StatusToMap(ev.SubData)
-	if err != nil {
-		server.Log.Errorf("gen status json error : %v", err)
-		return result, err
+		return "", err
 	}
-	b, err := json.Marshal(&m)
-	if err != nil {
-		server.Log.Errorf("marshal json error : %v", err)
+	switch args.Action {
+	case klink.DevSendAction:
+		params := j.GetMap("params")
+		if err = result.Set(j.GetString("cmd"), params); err != nil {
+			return "", err
+		}
 	}
-	result = string(b)
-	return result, nil
+	return result.MustToJsonString(), nil
 }
 
 func (c *Controller) processEventToQueue(args rpcs.ArgsOnEvent) (string, error) {
-	var result string
-	device := &models.Device{}
-	err := server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindDeviceByRecordId", &rpcs.ArgsDeviceAuth{DeviceID: args.DeviceId}, device)
+	result := gjson.New(nil)
+	j, err := gjson.DecodeToJson(args.SubData)
 	if err != nil {
-		server.Log.Errorf("find device error : %v", err)
-		return result, err
+		return "", nil
 	}
-
-	product := &models.Product{}
-	err = server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindProduct", &device.ProductID, product)
-	if err != nil {
-		server.Log.Errorf("find product error : %v", err)
-		return result, err
+	params := j.GetMap("params")
+	if err = result.Set(j.GetString("cmd"), params); err != nil {
+		return "", err
 	}
+	return result.MustToJsonString(), nil
+}
 
-	pc, err := productconfig.New(product.ProductConfig)
+func (c *Controller) OnEvent(args rpcs.ArgsOnEvent, reply *rpcs.ReplyOnEvent) error {
+	t := time.Unix(int64(args.TimeStamp/1000), 0)
+	data, err := c.processEventToQueue(args)
 	if err != nil {
-		server.Log.Errorf("product config error : %v", err)
-		return result, err
+		return err
 	}
-	ev := &protocol.Event{}
-	ev.Head.SubDeviceid = args.SubDevice
-	ev.Head.Priority = args.Priority
-	ev.Head.No = args.No
-	ev.Head.Timestamp = args.TimeStamp
-	ev.Head.ParamsCount = uint16(len(args.Params))
-	ev.Params = args.Params
-	m, err := pc.EventToMap(ev)
-	if err != nil {
-		server.Log.Errorf("gen status json error : %v", err)
-		return result, err
+	msg := &protocol.Message{
+		Id:       guid.S(),
+		Ts:       &t,
+		Type:     protocol.POST_EVENT_REQUEST,
+		Data:     data,
+		Callback: nil,
+		MetaData: map[string]interface{}{
+			"tenant_id":     args.VendorId,
+			"device_id":     args.DeviceId,
+			"sub_device_id": args.SubDeviceId,
+		},
+		Originator: "device",
 	}
-	b, err := json.Marshal(&m)
+	tpi := queue.ResolvePartition("RULE_ENGINE",
+		msg.GetQueueName(),
+		args.VendorId,
+		args.DeviceId)
+	g, err := queue.NewGobQueueMessage(msg)
 	if err != nil {
-		server.Log.Errorf("marshal json error : %v", err)
+		return err
 	}
-	result = string(b)
-	return result, nil
-}
-
-func (c *Controller) OnEvent(args rpcs.ArgsOnEvent, reply *rpcs.ReplyOnEvent) error {
-	go func() {
-		err := c.ift.Check(args.DeviceId, args.No)
-		if err != nil {
-			server.Log.Warnf("perform ifttt rules error : %v", err)
-		}
-	}()
-
-	return nil
+	g.Headers.Put("tenant_id", []byte(args.VendorId))
+	return c.producer.Send(tpi, g, nil)
 }
 
 func (c *Controller) SendCommand(args rpcs.ArgsSendCommand, reply *rpcs.ReplySendCommand) error {
@@ -200,7 +181,6 @@ func (c *Controller) SendCommand(args rpcs.ArgsSendCommand, reply *rpcs.ReplySen
 	if err != nil {
 		return err
 	}
-
 	return server.RPCCallByHost(rpchost, "Access.SendCommand", args, reply)
 }
 
@@ -269,7 +249,7 @@ func (c *Controller) launchConsumer() {
 			if err := ruleEngineMsg.Decode(msg.GetData()); err != nil {
 				fmt.Println("解析消息失败")
 			}
-			tanantId := msg.GetHeaders().Get("tanant_id")
+			tanantId := msg.GetHeaders().Get("tenant_id")
 			if c.actorContext != nil {
 				c.actorContext.Tell(&ruleEngine.QueueToRuleEngineMsg{
 					TenantId: string(tanantId),

services/devicemanager/manager.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"errors"
+	"github.com/garyburd/redigo/redis"
 	"sparrow/pkg/online"
 	"sparrow/pkg/rpcs"
 	"sparrow/pkg/token"
@@ -55,10 +57,14 @@ func (dm *DeviceManager) GetOffline(args rpcs.ArgsGetOffline, reply *rpcs.ReplyG
 
 func (dm *DeviceManager) GetDeviceOnlineStatus(args rpcs.ArgsGetDeviceOnlineStatus, reply *rpcs.ReplyGetDeviceOnlineStatus) error {
 	status, err := dm.onlineManager.GetStatus(args.Id)
-	if err != nil {
+	if err != nil && err != redis.ErrNil {
 		return err
 	}
 
+	if err == redis.ErrNil {
+		return errors.New("device not online")
+	}
+
 	reply.ClientIP = status.ClientIP
 	reply.AccessRPCHost = status.AccessRPCHost
 	reply.HeartbeatInterval = status.HeartbeatInterval

services/httpaccess/httpaccess.md

@@ -93,4 +93,6 @@ protocol|字符串|Y|协议类型(mqtt,coap)
 |字段|类型|说明|
 ---|---|---
 access_token|字符串|设备token
-access_addr|字符串|接入服务器地址+端口
+access_addr|字符串|接入服务器地址+端口
+
+> 此接口获取到的access_token,及addcess_addr作为mqtt服务接入的password和服务地址

services/mqttaccess/access.go

@@ -1,7 +1,8 @@
 package main
 
 import (
-	"errors"
+	"github.com/gogf/gf/encoding/gjson"
+	"sparrow/pkg/klink"
 	"sparrow/pkg/mqtt"
 	"sparrow/pkg/protocol"
 	"sparrow/pkg/rpcs"
@@ -46,52 +47,52 @@ func (a *Access) SetStatus(args rpcs.ArgsSetStatus, reply *rpcs.ReplySetStatus)
 func (a *Access) GetStatus(args rpcs.ArgsGetStatus, reply *rpcs.ReplyGetStatus) error {
 	server.Log.Infof("Access Get Status: %v", args)
 	// first send a get status command
-	cmdArgs := rpcs.ArgsSendCommand{
-		DeviceId:  args.Id,
-		SubDevice: 65535,
-		No:        commandGetCurrentStatus,
-		Priority:  99,
-		WaitTime:  0,
-	}
-	cmdReply := rpcs.ReplySendCommand{}
-	err := a.SendCommand(cmdArgs, &cmdReply)
-	if err != nil {
-		return err
-	}
-
-	// then wait for status report
-	StatusChan[args.Id] = make(chan *protocol.Data)
-	after := time.After(defaultTimeoutSecond * time.Second)
-	server.Log.Debug("now waiting 5 seconds for status report...")
-	select {
-	case <-after:
-		// timeout
-		close(StatusChan[args.Id])
-		delete(StatusChan, args.Id)
-		return errors.New("get status timeout.")
-	case data := <-StatusChan[args.Id]:
-		// go it
-		close(StatusChan[args.Id])
-		delete(StatusChan, args.Id)
-		reply.Status = data.SubData
-		return nil
-	}
+	//cmdArgs := rpcs.ArgsSendCommand{
+	//	DeviceId:  args.Id,
+	//	SubDevice: 65535,
+	//	No:        commandGetCurrentStatus,
+	//	Priority:  99,
+	//	WaitTime:  0,
+	//}
+	//cmdReply := rpcs.ReplySendCommand{}
+	//err := a.SendCommand(cmdArgs, &cmdReply)
+	//if err != nil {
+	//	return err
+	//}
+	//
+	//// then wait for status report
+	//StatusChan[args.Id] = make(chan *protocol.Data)
+	//after := time.After(defaultTimeoutSecond * time.Second)
+	//server.Log.Debug("now waiting 5 seconds for status report...")
+	//select {
+	//case <-after:
+	//	// timeout
+	//	close(StatusChan[args.Id])
+	//	delete(StatusChan, args.Id)
+	//	return errors.New("get status timeout.")
+	//case data := <-StatusChan[args.Id]:
+	//	// go it
+	//	close(StatusChan[args.Id])
+	//	delete(StatusChan, args.Id)
+	//	reply.Status = data.SubData
+	//	return nil
+	//}
+	return nil
 }
 
 func (a *Access) SendCommand(args rpcs.ArgsSendCommand, reply *rpcs.ReplySendCommand) error {
 	server.Log.Infof("Access Send Command: %v", args)
-	cmd := &protocol.Command{}
-	cmd.Head.Timestamp = uint64(time.Now().Unix())
-	token, err := a.MqttBroker.GetToken(args.DeviceId)
-	if err != nil {
-		return err
+	cmd := &klink.CloudSend{
+		Action:      "cloudSend",
+		MsgId:       0,
+		DeviceCode:  args.DeviceId,
+		SubDeviceId: args.SubDevice,
+		Timestamp:   time.Now().Unix(),
+		Data: &klink.CloudSendData{
+			Cmd:    args.Cmd,
+			Params: gjson.New(args.Params),
+		},
 	}
-	copy(cmd.Head.Token[:], token[:16])
-	cmd.Head.No = args.No
-	cmd.Head.Priority = args.Priority
-	cmd.Head.SubDeviceid = args.SubDevice
-	cmd.Head.ParamsCount = uint16(len(args.Params))
-	cmd.Params = args.Params
 	msg, err := cmd.Marshal()
 	if err != nil {
 		return err

services/mqttaccess/mqtt_provider.go

@@ -1,7 +1,8 @@
 package main
 
 import (
-	"sparrow/pkg/protocol"
+	"github.com/gogf/gf/encoding/gjson"
+	"sparrow/pkg/klink"
 	"sparrow/pkg/rpcs"
 	"sparrow/pkg/server"
 )
@@ -31,6 +32,21 @@ func (mp *MQTTProvider) OnDeviceOnline(args rpcs.ArgsGetOnline) error {
 	if err != nil {
 		server.Log.Errorf("device online error. args: %v, error: %v", args, err)
 	}
+	//// 拉取期望状态
+	//var desired *rpcs.DeviceDesiredReply
+	//if err = server.RPCCallByName(nil, rpcs.ShadowServiceName,
+	//	"ShadowServer.GetDeviceDesired", args.Id, &desired); err != nil {
+	//	return err
+	//}
+	//j, err := gjson.DecodeToJson(desired.Data)
+	//if err != nil {
+	//	server.Log.Errorf("不正确的期望值格式%s", desired.Data)
+	//} else {
+	//	if j != nil {
+	//		// TODO: 向设备同步期望值
+	//
+	//	}
+	//}
 
 	return err
 }
@@ -57,55 +73,31 @@ func (mp *MQTTProvider) OnDeviceHeartBeat(deviceid string) error {
 	}
 	return err
 }
-func (mp *MQTTProvider) OnDeviceMessage(deviceid, vendorId string, msgtype string, message []byte) {
-	server.Log.Infof("device {%v} message {%v} : %x", deviceid, msgtype, message)
+func (mp *MQTTProvider) OnDeviceMessage(deviceid, vendorId string, msgtype string, message *gjson.Json) {
+	server.Log.Infof("device {%v} message {%v} : %s", deviceid, msgtype, message.MustToJsonString())
 	switch msgtype {
 	case "s":
-		// it's a status
-		data := &protocol.Data{}
-		err := data.UnMarshal(message)
-		if err != nil {
-			server.Log.Errorf("unmarshal data error : %v", err)
-			return
-		}
-		// if there is a realtime query
-		ch, exist := StatusChan[deviceid]
-		if exist {
-			ch <- data
-			return
-		}
-
-		// it's a normal report.
-		reply := rpcs.ReplyOnStatus{}
-		args := rpcs.ArgsOnStatus{
-			DeviceId:  deviceid,
-			Timestamp: data.Head.Timestamp,
-			SubData:   data.SubData,
-			VendorId:  vendorId,
-		}
-		err = server.RPCCallByName(nil, rpcs.ControllerName, "Controller.OnStatus", args, &reply)
-		if err != nil {
-			server.Log.Errorf("device report status error. args: %v, error: %v", args, err)
-			return
+		act := klink.PacketAction(message.GetString("action"))
+		if act != "" {
+			switch act {
+			case klink.DevSendAction:
+				processReportStatus(deviceid, vendorId, message)
+			case klink.DevLoginAction:
+				processDevLogin(deviceid)
+			case klink.DevLogoutAction:
+				processDevLogout(deviceid)
+			}
 		}
 	case "e":
-		// it's an event report
-		event := &protocol.Event{}
-		err := event.UnMarshal(message)
-		if err != nil {
-			server.Log.Errorf("unmarshal event error : %v", err)
-			return
-		}
 		reply := rpcs.ReplyOnEvent{}
 		args := rpcs.ArgsOnEvent{
-			DeviceId:  deviceid,
-			TimeStamp: event.Head.Timestamp,
-			SubDevice: event.Head.SubDeviceid,
-			No:        event.Head.No,
-			Priority:  event.Head.Priority,
-			Params:    event.Params,
+			DeviceId:    deviceid,
+			TimeStamp:   message.GetUint64("timestamp"),
+			SubDeviceId: message.GetString("subDeviceId"),
+			SubData:     message.GetJson("data").MustToJson(),
+			VendorId:    vendorId,
 		}
-		err = server.RPCCallByName(nil, rpcs.ControllerName, "Controller.OnEvent", args, &reply)
+		err := server.RPCCallByName(nil, rpcs.ControllerName, "Controller.OnEvent", args, &reply)
 		if err != nil {
 			server.Log.Errorf("device on event error. args: %v, error: %v", args, err)
 			return
@@ -114,3 +106,30 @@ func (mp *MQTTProvider) OnDeviceMessage(deviceid, vendorId string, msgtype strin
 		server.Log.Infof("unknown message type: %v", msgtype)
 	}
 }
+
+func processReportStatus(deviceid, vendorId string, message *gjson.Json) {
+	reply := rpcs.ReplyOnStatus{}
+	args := rpcs.ArgsOnStatus{
+		DeviceId:    deviceid,
+		Timestamp:   message.GetUint64("timestamp"),
+		SubData:     message.GetJson("data").MustToJson(),
+		VendorId:    vendorId,
+		SubDeviceId: message.GetString("subDeviceId"),
+		Action:      klink.PacketAction(message.GetString("action")),
+	}
+	err := server.RPCCallByName(nil, rpcs.ControllerName, "Controller.OnStatus", args, &reply)
+	if err != nil {
+		server.Log.Errorf("device report status error. args: %v, error: %v", args, err)
+		return
+	}
+}
+
+// TODO 子设备上线
+func processDevLogin(deviceId string) {
+
+}
+
+// TODO 子设备下线
+func processDevLogout(deviceId string) {
+
+}

services/registry/registry.go

@@ -301,13 +301,11 @@ func (r *Registry) RegisterDevice(args *rpcs.ArgsDeviceRegister, reply *models.D
 	if err != nil {
 		return err
 	}
-
-	identifier := genDeviceIdentifier(product.ID, product.ID, args.DeviceCode)
-	if db.Where(&models.Device{DeviceIdentifier: identifier}).First(reply).RecordNotFound() {
+	if db.Where(&models.Device{DeviceIdentifier: args.DeviceCode}).First(reply).RecordNotFound() {
 		// device is not registered yet.
 		reply.RecordId = guid.S()
 		reply.ProductID = product.RecordId
-		reply.DeviceIdentifier = identifier
+		reply.DeviceIdentifier = args.DeviceCode
 		reply.DeviceName = product.ProductName // product name as default device name.
 		reply.DeviceDescription = product.ProductDescription
 		reply.DeviceVersion = args.DeviceVersion
@@ -336,7 +334,7 @@ func (r *Registry) RegisterDevice(args *rpcs.ArgsDeviceRegister, reply *models.D
 
 		//delete cache
 		cache := getCache()
-		cacheKey := fmt.Sprintf("Device:%v", identifier)
+		cacheKey := fmt.Sprintf("Device:%v", args.DeviceCode)
 		if _, ok := cache.Get(cacheKey); ok {
 			cache.Delete(cacheKey)
 		}

services/shadowservice/main.go

@@ -1 +1,25 @@
-package shadowservice
+package main
+
+import (
+	"sparrow/pkg/rpcs"
+	"sparrow/pkg/server"
+)
+
+func main() {
+	err := server.Init(rpcs.ShadowServiceName)
+	if err != nil {
+		server.Log.Fatal(err)
+		return
+	}
+	service := NewShadowStoreService()
+	srv := NewShadowServer(service)
+
+	if err = server.RegisterRPCHandler(srv); err != nil {
+		panic(err)
+	}
+	// start to run
+	err = server.Run()
+	if err != nil {
+		server.Log.Fatal(err)
+	}
+}

services/shadowservice/server.go

@@ -1,10 +1,159 @@
-package shadowservice
+package main
 
-import "github.com/gogf/gf/encoding/gjson"
+import (
+	"fmt"
+	"github.com/gogf/gf/encoding/gjson"
+	"github.com/gogf/gf/os/gcache"
+	"sparrow/pkg/rpcs"
+	"sparrow/pkg/server"
+	"sync"
+	"time"
+)
 
 type Server interface {
 	// SaveStatus 存储设备状态
 	SaveStatus(deviceCode string, data *gjson.Json) error
 	// GetStatus 获取设备状态
 	GetStatus(deviceCode string) (*gjson.Json, error)
+	// SaveCommand 保存指令
+	SaveCommand(deviceCode string, command *gjson.Json) error
+	// GetCommands 获取指令列表
+	GetCommands(deviceCode string) ([]map[string]interface{}, error)
+	// DeleteShadow 删除设备影子
+	DeleteShadow(deviceCode string) error
+}
+
+type ShadowServer struct {
+	mLock        sync.RWMutex
+	storeService Server
+}
+
+func NewShadowServer(storeService Server) *ShadowServer {
+	return &ShadowServer{
+		storeService: storeService,
+	}
+}
+
+// DeviceReport 设备上报状态
+func (a *ShadowServer) DeviceReport(args *rpcs.ArgsDeviceReport, reply *rpcs.ReplyEmptyResult) error {
+	server.Log.Debugf("收到设备上报[%s], data:%s", args.DeviceCode, args.Data)
+	a.mLock.RLock()
+	defer a.mLock.RUnlock()
+	return a.storeService.SaveStatus(args.DeviceCode, gjson.New(args.Data))
+}
+
+// GetDeviceDesired 获取设备期望状态
+func (a *ShadowServer) GetDeviceDesired(deviceId string, reply *rpcs.DeviceDesiredReply) error {
+	a.mLock.RLock()
+	defer a.mLock.RUnlock()
+	j, err := a.storeService.GetStatus(deviceId)
+	if err != nil {
+		return err
+	}
+	reply.Data = j.GetJson("status.desired").MustToJson()
+	return nil
+}
+
+// GetDeviceReported 获取设备上报的状态
+func (a *ShadowServer) GetDeviceReported(deviceId string, reply *gjson.Json) error {
+	a.mLock.RLock()
+	defer a.mLock.RUnlock()
+	j, err := a.storeService.GetStatus(deviceId)
+	if err != nil {
+		return err
+	}
+	reply = j.GetJson("status.reported")
+	return nil
+}
+
+// UpdateDesired 更新期望值
+func (a *ShadowServer) UpdateDesired(args *rpcs.ArgsDeviceReport, reply *rpcs.ReplyEmptyResult) error {
+	a.mLock.Lock()
+	defer a.mLock.Unlock()
+	j, err := a.storeService.GetStatus(args.DeviceCode)
+	if err != nil {
+		return err
+	}
+	newJ := gjson.New(args.Data)
+	for k, v := range newJ.Map() {
+		if err = j.Set(fmt.Sprintf("status.desired.%s", k), v); err != nil {
+			continue
+		}
+	}
+	return nil
+}
+
+type shadowStoreService struct {
+	store *gcache.Cache
+}
+
+func NewShadowStoreService() Server {
+	return &shadowStoreService{store: gcache.New()}
+}
+
+func (s *shadowStoreService) SaveStatus(deviceCode string, data *gjson.Json) error {
+	doc, err := s.store.GetOrSetFuncLock(deviceCode, func() (interface{}, error) {
+		d := new(ShadowDoc)
+		d.DeviceCode = deviceCode
+		d.Timestamp = time.Now().Unix()
+		d.Version = 1
+		return gjson.New(d), nil
+	}, 0)
+	if err != nil {
+		return err
+	}
+	if j, ok := doc.(*gjson.Json); ok {
+		for k, v := range data.Map() {
+			if err := j.Set(fmt.Sprintf("status.reported.%s", k), v); err != nil {
+				continue
+			}
+		}
+	}
+	return nil
+}
+
+func (s *shadowStoreService) GetStatus(deviceCode string) (*gjson.Json, error) {
+	doc, err := s.store.GetOrSetFuncLock(deviceCode, func() (interface{}, error) {
+		d := new(ShadowDoc)
+		d.DeviceCode = deviceCode
+		return gjson.New(d), nil
+	}, 0)
+	return doc.(*gjson.Json), err
+}
+
+func (s *shadowStoreService) SaveCommand(deviceCode string, command *gjson.Json) error {
+	doc, err := s.store.GetOrSetFuncLock(deviceCode, func() (interface{}, error) {
+		d := new(ShadowDoc)
+		d.DeviceCode = deviceCode
+		return gjson.New(d), nil
+	}, 0)
+	if err != nil {
+		return err
+	}
+	if j, ok := doc.(*gjson.Json); ok {
+		commands := j.GetMaps("commands")
+		commands = append(commands, command.Map())
+		j.Set("commands", commands)
+	}
+	return nil
+}
+
+func (s *shadowStoreService) GetCommands(deviceCode string) ([]map[string]interface{}, error) {
+	doc, err := s.store.GetOrSetFuncLock(deviceCode, func() (interface{}, error) {
+		d := new(ShadowDoc)
+		d.DeviceCode = deviceCode
+		return gjson.New(d), nil
+	}, 0)
+	if err != nil {
+		return nil, err
+	}
+	if j, ok := doc.(*gjson.Json); ok {
+		return j.GetMaps("commands"), nil
+	}
+	return nil, nil
+}
+
+func (s *shadowStoreService) DeleteShadow(deviceCode string) error {
+	//TODO implement me
+	panic("implement me")
 }

services/shadowservice/server_test.go

@@ -1 +1,17 @@
 package main
+
+import (
+	"github.com/gogf/gf/encoding/gjson"
+	"testing"
+)
+
+func TestNewShadowStoreService(t *testing.T) {
+	s := NewShadowStoreService()
+	s.SaveStatus("123", gjson.New(`{"status": {"power": 2}}`))
+	doc, err := s.GetStatus("123")
+	if err != nil {
+		t.Fatal(err)
+	}
+	s.SaveCommand("123", gjson.New(`{"cmd":"powerControl","params":{"power":1,"temp":2}}`))
+	t.Log(doc.MustToJsonString())
+}

services/shadowservice/shadow_doc.go

@@ -1 +1,14 @@
-package shadowservice
+package main
+
+import "github.com/gogf/gf/encoding/gjson"
+
+type ShadowDoc struct {
+	Version    int    `json:"version"`   // 版本
+	Timestamp  int64  `json:"timestamp"` // 更新时间
+	DeviceCode string `json:"device_code"`
+	Status     struct {
+		Reported *gjson.Json `json:"reported"`
+		Desired  *gjson.Json `json:"desired"`
+	} `json:"status"`
+	Commands []map[string]interface{} `json:"commands"`
+}

vendor/github.com/robertkrimen/otto/DESIGN.markdown

@@ -0,0 +1 @@
+* Designate the filename of "anonymous" source code by the hash (md5/sha1, etc.)

vendor/github.com/robertkrimen/otto/LICENSE

@@ -0,0 +1,7 @@
+Copyright (c) 2012 Robert Krimen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/robertkrimen/otto/Makefile

@@ -0,0 +1,63 @@
+.PHONY: test test-race test-release release release-check test-262
+.PHONY: parser
+.PHONY: otto assets underscore
+
+TESTS := \
+	~
+
+TEST := -v --run
+TEST := -v
+TEST := -v --run Test\($(subst $(eval) ,\|,$(TESTS))\)
+TEST := .
+
+test: parser inline.go
+	go test -i
+	go test $(TEST)
+	@echo PASS
+
+parser:
+	$(MAKE) -C parser
+
+inline.go: inline.pl
+	./$< > $@
+
+#################
+# release, test #
+#################
+
+release: test-race test-release
+	for package in . parser token ast file underscore registry; do (cd $$package && godocdown --signature > README.markdown); done
+	@echo \*\*\* make release-check
+	@echo PASS
+
+release-check: .test
+	$(MAKE) -C test build test
+	$(MAKE) -C .test/test262 build test
+	@echo PASS
+
+test-262: .test
+	$(MAKE) -C .test/test262 build test
+	@echo PASS
+
+test-release:
+	go test -i
+	go test
+
+test-race:
+	go test -race -i
+	go test -race
+
+#################################
+# otto, assets, underscore, ... #
+#################################
+
+otto:
+	$(MAKE) -C otto
+
+assets:
+	mkdir -p .assets
+	for file in underscore/test/*.js; do tr "\`" "_" < $$file > .assets/`basename $$file`; done
+
+underscore:
+	$(MAKE) -C $@
+

vendor/github.com/robertkrimen/otto/README.markdown

@@ -0,0 +1,871 @@
+# otto
+--
+```go
+import "github.com/robertkrimen/otto"
+```
+
+Package otto is a JavaScript parser and interpreter written natively in Go.
+
+http://godoc.org/github.com/robertkrimen/otto
+
+```go
+import (
+   "github.com/robertkrimen/otto"
+)
+```
+
+Run something in the VM
+
+```go
+vm := otto.New()
+vm.Run(`
+    abc = 2 + 2;
+    console.log("The value of abc is " + abc); // 4
+`)
+```
+
+Get a value out of the VM
+
+```go
+if value, err := vm.Get("abc"); err == nil {
+    if value_int, err := value.ToInteger(); err == nil {
+	fmt.Printf("", value_int, err)
+    }
+}
+```
+
+Set a number
+
+```go
+vm.Set("def", 11)
+vm.Run(`
+    console.log("The value of def is " + def);
+    // The value of def is 11
+`)
+```
+
+Set a string
+
+```go
+vm.Set("xyzzy", "Nothing happens.")
+vm.Run(`
+    console.log(xyzzy.length); // 16
+`)
+```
+
+Get the value of an expression
+
+```go
+value, _ = vm.Run("xyzzy.length")
+{
+    // value is an int64 with a value of 16
+    value, _ := value.ToInteger()
+}
+```
+
+An error happens
+
+```go
+value, err = vm.Run("abcdefghijlmnopqrstuvwxyz.length")
+if err != nil {
+    // err = ReferenceError: abcdefghijlmnopqrstuvwxyz is not defined
+    // If there is an error, then value.IsUndefined() is true
+    ...
+}
+```
+
+Set a Go function
+
+```go
+vm.Set("sayHello", func(call otto.FunctionCall) otto.Value {
+    fmt.Printf("Hello, %s.\n", call.Argument(0).String())
+    return otto.Value{}
+})
+```
+
+Set a Go function that returns something useful
+
+```go
+vm.Set("twoPlus", func(call otto.FunctionCall) otto.Value {
+    right, _ := call.Argument(0).ToInteger()
+    result, _ := vm.ToValue(2 + right)
+    return result
+})
+```
+
+Use the functions in JavaScript
+
+```go
+result, _ = vm.Run(`
+    sayHello("Xyzzy");      // Hello, Xyzzy.
+    sayHello();             // Hello, undefined
+
+    result = twoPlus(2.0); // 4
+`)
+```
+
+### Parser
+
+A separate parser is available in the parser package if you're just interested
+in building an AST.
+
+http://godoc.org/github.com/robertkrimen/otto/parser
+
+Parse and return an AST
+
+```go
+filename := "" // A filename is optional
+src := `
+    // Sample xyzzy example
+    (function(){
+        if (3.14159 > 0) {
+            console.log("Hello, World.");
+            return;
+        }
+
+        var xyzzy = NaN;
+        console.log("Nothing happens.");
+        return xyzzy;
+    })();
+`
+
+// Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+program, err := parser.ParseFile(nil, filename, src, 0)
+```
+
+### otto
+
+You can run (Go) JavaScript from the commandline with:
+http://github.com/robertkrimen/otto/tree/master/otto
+
+    $ go get -v github.com/robertkrimen/otto/otto
+
+Run JavaScript by entering some source on stdin or by giving otto a filename:
+
+    $ otto example.js
+
+### underscore
+
+Optionally include the JavaScript utility-belt library, underscore, with this
+import:
+
+```go
+import (
+    "github.com/robertkrimen/otto"
+    _ "github.com/robertkrimen/otto/underscore"
+)
+
+// Now every otto runtime will come loaded with underscore
+```
+
+For more information: http://github.com/robertkrimen/otto/tree/master/underscore
+
+
+### Caveat Emptor
+
+The following are some limitations with otto:
+
+    * "use strict" will parse, but does nothing.
+    * The regular expression engine (re2/regexp) is not fully compatible with the ECMA5 specification.
+    * Otto targets ES5. ES6 features (eg: Typed Arrays) are not supported.
+
+
+### Regular Expression Incompatibility
+
+Go translates JavaScript-style regular expressions into something that is
+"regexp" compatible via `parser.TransformRegExp`. Unfortunately, RegExp requires
+backtracking for some patterns, and backtracking is not supported by the
+standard Go engine: https://code.google.com/p/re2/wiki/Syntax
+
+Therefore, the following syntax is incompatible:
+
+    (?=)  // Lookahead (positive), currently a parsing error
+    (?!)  // Lookahead (backhead), currently a parsing error
+    \1    // Backreference (\1, \2, \3, ...), currently a parsing error
+
+A brief discussion of these limitations: "Regexp (?!re)"
+https://groups.google.com/forum/?fromgroups=#%21topic/golang-nuts/7qgSDWPIh_E
+
+More information about re2: https://code.google.com/p/re2/
+
+In addition to the above, re2 (Go) has a different definition for \s: [\t\n\f\r
+]. The JavaScript definition, on the other hand, also includes \v, Unicode
+"Separator, Space", etc.
+
+
+### Halting Problem
+
+If you want to stop long running executions (like third-party code), you can use
+the interrupt channel to do this:
+
+```go
+package main
+
+import (
+    "errors"
+    "fmt"
+    "os"
+    "time"
+
+    "github.com/robertkrimen/otto"
+)
+
+var halt = errors.New("Stahp")
+
+func main() {
+    runUnsafe(`var abc = [];`)
+    runUnsafe(`
+    while (true) {
+        // Loop forever
+    }`)
+}
+
+func runUnsafe(unsafe string) {
+    start := time.Now()
+    defer func() {
+        duration := time.Since(start)
+        if caught := recover(); caught != nil {
+            if caught == halt {
+                fmt.Fprintf(os.Stderr, "Some code took to long! Stopping after: %v\n", duration)
+                return
+            }
+            panic(caught) // Something else happened, repanic!
+        }
+        fmt.Fprintf(os.Stderr, "Ran code successfully: %v\n", duration)
+    }()
+
+    vm := otto.New()
+    vm.Interrupt = make(chan func(), 1) // The buffer prevents blocking
+
+    go func() {
+        time.Sleep(2 * time.Second) // Stop after two seconds
+        vm.Interrupt <- func() {
+            panic(halt)
+        }
+    }()
+
+    vm.Run(unsafe) // Here be dragons (risky code)
+}
+```
+
+Where is setTimeout/setInterval?
+
+These timing functions are not actually part of the ECMA-262 specification.
+Typically, they belong to the `window` object (in the browser). It would not be
+difficult to provide something like these via Go, but you probably want to wrap
+otto in an event loop in that case.
+
+For an example of how this could be done in Go with otto, see natto:
+
+http://github.com/robertkrimen/natto
+
+Here is some more discussion of the issue:
+
+* http://book.mixu.net/node/ch2.html
+
+* http://en.wikipedia.org/wiki/Reentrancy_%28computing%29
+
+* http://aaroncrane.co.uk/2009/02/perl_safe_signals/
+
+## Usage
+
+```go
+var ErrVersion = errors.New("version mismatch")
+```
+
+#### type Error
+
+```go
+type Error struct {
+}
+```
+
+An Error represents a runtime error, e.g. a TypeError, a ReferenceError, etc.
+
+#### func (Error) Error
+
+```go
+func (err Error) Error() string
+```
+Error returns a description of the error
+
+    TypeError: 'def' is not a function
+
+#### func (Error) String
+
+```go
+func (err Error) String() string
+```
+String returns a description of the error and a trace of where the error
+occurred.
+
+    TypeError: 'def' is not a function
+        at xyz (<anonymous>:3:9)
+        at <anonymous>:7:1/
+
+#### type FunctionCall
+
+```go
+type FunctionCall struct {
+	This         Value
+	ArgumentList []Value
+	Otto         *Otto
+}
+```
+
+FunctionCall is an encapsulation of a JavaScript function call.
+
+#### func (FunctionCall) Argument
+
+```go
+func (self FunctionCall) Argument(index int) Value
+```
+Argument will return the value of the argument at the given index.
+
+If no such argument exists, undefined is returned.
+
+#### type Object
+
+```go
+type Object struct {
+}
+```
+
+Object is the representation of a JavaScript object.
+
+#### func (Object) Call
+
+```go
+func (self Object) Call(name string, argumentList ...interface{}) (Value, error)
+```
+Call a method on the object.
+
+It is essentially equivalent to:
+
+    var method, _ := object.Get(name)
+    method.Call(object, argumentList...)
+
+An undefined value and an error will result if:
+
+    1. There is an error during conversion of the argument list
+    2. The property is not actually a function
+    3. An (uncaught) exception is thrown
+
+#### func (Object) Class
+
+```go
+func (self Object) Class() string
+```
+Class will return the class string of the object.
+
+The return value will (generally) be one of:
+
+    Object
+    Function
+    Array
+    String
+    Number
+    Boolean
+    Date
+    RegExp
+
+#### func (Object) Get
+
+```go
+func (self Object) Get(name string) (Value, error)
+```
+Get the value of the property with the given name.
+
+#### func (Object) Keys
+
+```go
+func (self Object) Keys() []string
+```
+Get the keys for the object
+
+Equivalent to calling Object.keys on the object
+
+#### func (Object) Set
+
+```go
+func (self Object) Set(name string, value interface{}) error
+```
+Set the property of the given name to the given value.
+
+An error will result if the setting the property triggers an exception (i.e.
+read-only), or there is an error during conversion of the given value.
+
+#### func (Object) Value
+
+```go
+func (self Object) Value() Value
+```
+Value will return self as a value.
+
+#### type Otto
+
+```go
+type Otto struct {
+	// Interrupt is a channel for interrupting the runtime. You can use this to halt a long running execution, for example.
+	// See "Halting Problem" for more information.
+	Interrupt chan func()
+}
+```
+
+Otto is the representation of the JavaScript runtime. Each instance of Otto has
+a self-contained namespace.
+
+#### func  New
+
+```go
+func New() *Otto
+```
+New will allocate a new JavaScript runtime
+
+#### func  Run
+
+```go
+func Run(src interface{}) (*Otto, Value, error)
+```
+Run will allocate a new JavaScript runtime, run the given source on the
+allocated runtime, and return the runtime, resulting value, and error (if any).
+
+src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST
+always be in UTF-8.
+
+src may also be a Script.
+
+src may also be a Program, but if the AST has been modified, then runtime
+behavior is undefined.
+
+#### func (Otto) Call
+
+```go
+func (self Otto) Call(source string, this interface{}, argumentList ...interface{}) (Value, error)
+```
+Call the given JavaScript with a given this and arguments.
+
+If this is nil, then some special handling takes place to determine the proper
+this value, falling back to a "standard" invocation if necessary (where this is
+undefined).
+
+If source begins with "new " (A lowercase new followed by a space), then Call
+will invoke the function constructor rather than performing a function call. In
+this case, the this argument has no effect.
+
+```go
+// value is a String object
+value, _ := vm.Call("Object", nil, "Hello, World.")
+
+// Likewise...
+value, _ := vm.Call("new Object", nil, "Hello, World.")
+
+// This will perform a concat on the given array and return the result
+// value is [ 1, 2, 3, undefined, 4, 5, 6, 7, "abc" ]
+value, _ := vm.Call(`[ 1, 2, 3, undefined, 4 ].concat`, nil, 5, 6, 7, "abc")
+```
+
+#### func (*Otto) Compile
+
+```go
+func (self *Otto) Compile(filename string, src interface{}) (*Script, error)
+```
+Compile will parse the given source and return a Script value or nil and an
+error if there was a problem during compilation.
+
+```go
+script, err := vm.Compile("", `var abc; if (!abc) abc = 0; abc += 2; abc;`)
+vm.Run(script)
+```
+
+#### func (*Otto) Copy
+
+```go
+func (in *Otto) Copy() *Otto
+```
+Copy will create a copy/clone of the runtime.
+
+Copy is useful for saving some time when creating many similar runtimes.
+
+This method works by walking the original runtime and cloning each object,
+scope, stash, etc. into a new runtime.
+
+Be on the lookout for memory leaks or inadvertent sharing of resources.
+
+#### func (Otto) Get
+
+```go
+func (self Otto) Get(name string) (Value, error)
+```
+Get the value of the top-level binding of the given name.
+
+If there is an error (like the binding does not exist), then the value will be
+undefined.
+
+#### func (Otto) Object
+
+```go
+func (self Otto) Object(source string) (*Object, error)
+```
+Object will run the given source and return the result as an object.
+
+For example, accessing an existing object:
+
+```go
+object, _ := vm.Object(`Number`)
+```
+
+Or, creating a new object:
+
+```go
+object, _ := vm.Object(`({ xyzzy: "Nothing happens." })`)
+```
+
+Or, creating and assigning an object:
+
+```go
+object, _ := vm.Object(`xyzzy = {}`)
+object.Set("volume", 11)
+```
+
+If there is an error (like the source does not result in an object), then nil
+and an error is returned.
+
+#### func (Otto) Run
+
+```go
+func (self Otto) Run(src interface{}) (Value, error)
+```
+Run will run the given source (parsing it first if necessary), returning the
+resulting value and error (if any)
+
+src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST
+always be in UTF-8.
+
+If the runtime is unable to parse source, then this function will return
+undefined and the parse error (nothing will be evaluated in this case).
+
+src may also be a Script.
+
+src may also be a Program, but if the AST has been modified, then runtime
+behavior is undefined.
+
+#### func (Otto) Set
+
+```go
+func (self Otto) Set(name string, value interface{}) error
+```
+Set the top-level binding of the given name to the given value.
+
+Set will automatically apply ToValue to the given value in order to convert it
+to a JavaScript value (type Value).
+
+If there is an error (like the binding is read-only, or the ToValue conversion
+fails), then an error is returned.
+
+If the top-level binding does not exist, it will be created.
+
+#### func (Otto) ToValue
+
+```go
+func (self Otto) ToValue(value interface{}) (Value, error)
+```
+ToValue will convert an interface{} value to a value digestible by
+otto/JavaScript.
+
+#### type Script
+
+```go
+type Script struct {
+}
+```
+
+Script is a handle for some (reusable) JavaScript. Passing a Script value to a
+run method will evaluate the JavaScript.
+
+#### func (*Script) String
+
+```go
+func (self *Script) String() string
+```
+
+#### type Value
+
+```go
+type Value struct {
+}
+```
+
+Value is the representation of a JavaScript value.
+
+#### func  FalseValue
+
+```go
+func FalseValue() Value
+```
+FalseValue will return a value representing false.
+
+It is equivalent to:
+
+```go
+ToValue(false)
+```
+
+#### func  NaNValue
+
+```go
+func NaNValue() Value
+```
+NaNValue will return a value representing NaN.
+
+It is equivalent to:
+
+```go
+ToValue(math.NaN())
+```
+
+#### func  NullValue
+
+```go
+func NullValue() Value
+```
+NullValue will return a Value representing null.
+
+#### func  ToValue
+
+```go
+func ToValue(value interface{}) (Value, error)
+```
+ToValue will convert an interface{} value to a value digestible by
+otto/JavaScript
+
+This function will not work for advanced types (struct, map, slice/array, etc.)
+and you should use Otto.ToValue instead.
+
+#### func  TrueValue
+
+```go
+func TrueValue() Value
+```
+TrueValue will return a value representing true.
+
+It is equivalent to:
+
+```go
+ToValue(true)
+```
+
+#### func  UndefinedValue
+
+```go
+func UndefinedValue() Value
+```
+UndefinedValue will return a Value representing undefined.
+
+#### func (Value) Call
+
+```go
+func (value Value) Call(this Value, argumentList ...interface{}) (Value, error)
+```
+Call the value as a function with the given this value and argument list and
+return the result of invocation. It is essentially equivalent to:
+
+    value.apply(thisValue, argumentList)
+
+An undefined value and an error will result if:
+
+    1. There is an error during conversion of the argument list
+    2. The value is not actually a function
+    3. An (uncaught) exception is thrown
+
+#### func (Value) Class
+
+```go
+func (value Value) Class() string
+```
+Class will return the class string of the value or the empty string if value is
+not an object.
+
+The return value will (generally) be one of:
+
+    Object
+    Function
+    Array
+    String
+    Number
+    Boolean
+    Date
+    RegExp
+
+#### func (Value) Export
+
+```go
+func (self Value) Export() (interface{}, error)
+```
+Export will attempt to convert the value to a Go representation and return it
+via an interface{} kind.
+
+Export returns an error, but it will always be nil. It is present for backwards
+compatibility.
+
+If a reasonable conversion is not possible, then the original value is returned.
+
+    undefined   -> nil (FIXME?: Should be Value{})
+    null        -> nil
+    boolean     -> bool
+    number      -> A number type (int, float32, uint64, ...)
+    string      -> string
+    Array       -> []interface{}
+    Object      -> map[string]interface{}
+
+#### func (Value) IsBoolean
+
+```go
+func (value Value) IsBoolean() bool
+```
+IsBoolean will return true if value is a boolean (primitive).
+
+#### func (Value) IsDefined
+
+```go
+func (value Value) IsDefined() bool
+```
+IsDefined will return false if the value is undefined, and true otherwise.
+
+#### func (Value) IsFunction
+
+```go
+func (value Value) IsFunction() bool
+```
+IsFunction will return true if value is a function.
+
+#### func (Value) IsNaN
+
+```go
+func (value Value) IsNaN() bool
+```
+IsNaN will return true if value is NaN (or would convert to NaN).
+
+#### func (Value) IsNull
+
+```go
+func (value Value) IsNull() bool
+```
+IsNull will return true if the value is null, and false otherwise.
+
+#### func (Value) IsNumber
+
+```go
+func (value Value) IsNumber() bool
+```
+IsNumber will return true if value is a number (primitive).
+
+#### func (Value) IsObject
+
+```go
+func (value Value) IsObject() bool
+```
+IsObject will return true if value is an object.
+
+#### func (Value) IsPrimitive
+
+```go
+func (value Value) IsPrimitive() bool
+```
+IsPrimitive will return true if value is a primitive (any kind of primitive).
+
+#### func (Value) IsString
+
+```go
+func (value Value) IsString() bool
+```
+IsString will return true if value is a string (primitive).
+
+#### func (Value) IsUndefined
+
+```go
+func (value Value) IsUndefined() bool
+```
+IsUndefined will return true if the value is undefined, and false otherwise.
+
+#### func (Value) Object
+
+```go
+func (value Value) Object() *Object
+```
+Object will return the object of the value, or nil if value is not an object.
+
+This method will not do any implicit conversion. For example, calling this
+method on a string primitive value will not return a String object.
+
+#### func (Value) String
+
+```go
+func (value Value) String() string
+```
+String will return the value as a string.
+
+This method will make return the empty string if there is an error.
+
+#### func (Value) ToBoolean
+
+```go
+func (value Value) ToBoolean() (bool, error)
+```
+ToBoolean will convert the value to a boolean (bool).
+
+    ToValue(0).ToBoolean() => false
+    ToValue("").ToBoolean() => false
+    ToValue(true).ToBoolean() => true
+    ToValue(1).ToBoolean() => true
+    ToValue("Nothing happens").ToBoolean() => true
+
+If there is an error during the conversion process (like an uncaught exception),
+then the result will be false and an error.
+
+#### func (Value) ToFloat
+
+```go
+func (value Value) ToFloat() (float64, error)
+```
+ToFloat will convert the value to a number (float64).
+
+    ToValue(0).ToFloat() => 0.
+    ToValue(1.1).ToFloat() => 1.1
+    ToValue("11").ToFloat() => 11.
+
+If there is an error during the conversion process (like an uncaught exception),
+then the result will be 0 and an error.
+
+#### func (Value) ToInteger
+
+```go
+func (value Value) ToInteger() (int64, error)
+```
+ToInteger will convert the value to a number (int64).
+
+    ToValue(0).ToInteger() => 0
+    ToValue(1.1).ToInteger() => 1
+    ToValue("11").ToInteger() => 11
+
+If there is an error during the conversion process (like an uncaught exception),
+then the result will be 0 and an error.
+
+#### func (Value) ToString
+
+```go
+func (value Value) ToString() (string, error)
+```
+ToString will convert the value to a string (string).
+
+    ToValue(0).ToString() => "0"
+    ToValue(false).ToString() => "false"
+    ToValue(1.1).ToString() => "1.1"
+    ToValue("11").ToString() => "11"
+    ToValue('Nothing happens.').ToString() => "Nothing happens."
+
+If there is an error during the conversion process (like an uncaught exception),
+then the result will be the empty string ("") and an error.
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/ast/README.markdown

@@ -0,0 +1,1068 @@
+# ast
+--
+    import "github.com/robertkrimen/otto/ast"
+
+Package ast declares types representing a JavaScript AST.
+
+
+### Warning
+
+The parser and AST interfaces are still works-in-progress (particularly where
+node types are concerned) and may change in the future.
+
+## Usage
+
+#### type ArrayLiteral
+
+```go
+type ArrayLiteral struct {
+	LeftBracket  file.Idx
+	RightBracket file.Idx
+	Value        []Expression
+}
+```
+
+
+#### func (*ArrayLiteral) Idx0
+
+```go
+func (self *ArrayLiteral) Idx0() file.Idx
+```
+
+#### func (*ArrayLiteral) Idx1
+
+```go
+func (self *ArrayLiteral) Idx1() file.Idx
+```
+
+#### type AssignExpression
+
+```go
+type AssignExpression struct {
+	Operator token.Token
+	Left     Expression
+	Right    Expression
+}
+```
+
+
+#### func (*AssignExpression) Idx0
+
+```go
+func (self *AssignExpression) Idx0() file.Idx
+```
+
+#### func (*AssignExpression) Idx1
+
+```go
+func (self *AssignExpression) Idx1() file.Idx
+```
+
+#### type BadExpression
+
+```go
+type BadExpression struct {
+	From file.Idx
+	To   file.Idx
+}
+```
+
+
+#### func (*BadExpression) Idx0
+
+```go
+func (self *BadExpression) Idx0() file.Idx
+```
+
+#### func (*BadExpression) Idx1
+
+```go
+func (self *BadExpression) Idx1() file.Idx
+```
+
+#### type BadStatement
+
+```go
+type BadStatement struct {
+	From file.Idx
+	To   file.Idx
+}
+```
+
+
+#### func (*BadStatement) Idx0
+
+```go
+func (self *BadStatement) Idx0() file.Idx
+```
+
+#### func (*BadStatement) Idx1
+
+```go
+func (self *BadStatement) Idx1() file.Idx
+```
+
+#### type BinaryExpression
+
+```go
+type BinaryExpression struct {
+	Operator   token.Token
+	Left       Expression
+	Right      Expression
+	Comparison bool
+}
+```
+
+
+#### func (*BinaryExpression) Idx0
+
+```go
+func (self *BinaryExpression) Idx0() file.Idx
+```
+
+#### func (*BinaryExpression) Idx1
+
+```go
+func (self *BinaryExpression) Idx1() file.Idx
+```
+
+#### type BlockStatement
+
+```go
+type BlockStatement struct {
+	LeftBrace  file.Idx
+	List       []Statement
+	RightBrace file.Idx
+}
+```
+
+
+#### func (*BlockStatement) Idx0
+
+```go
+func (self *BlockStatement) Idx0() file.Idx
+```
+
+#### func (*BlockStatement) Idx1
+
+```go
+func (self *BlockStatement) Idx1() file.Idx
+```
+
+#### type BooleanLiteral
+
+```go
+type BooleanLiteral struct {
+	Idx     file.Idx
+	Literal string
+	Value   bool
+}
+```
+
+
+#### func (*BooleanLiteral) Idx0
+
+```go
+func (self *BooleanLiteral) Idx0() file.Idx
+```
+
+#### func (*BooleanLiteral) Idx1
+
+```go
+func (self *BooleanLiteral) Idx1() file.Idx
+```
+
+#### type BracketExpression
+
+```go
+type BracketExpression struct {
+	Left         Expression
+	Member       Expression
+	LeftBracket  file.Idx
+	RightBracket file.Idx
+}
+```
+
+
+#### func (*BracketExpression) Idx0
+
+```go
+func (self *BracketExpression) Idx0() file.Idx
+```
+
+#### func (*BracketExpression) Idx1
+
+```go
+func (self *BracketExpression) Idx1() file.Idx
+```
+
+#### type BranchStatement
+
+```go
+type BranchStatement struct {
+	Idx   file.Idx
+	Token token.Token
+	Label *Identifier
+}
+```
+
+
+#### func (*BranchStatement) Idx0
+
+```go
+func (self *BranchStatement) Idx0() file.Idx
+```
+
+#### func (*BranchStatement) Idx1
+
+```go
+func (self *BranchStatement) Idx1() file.Idx
+```
+
+#### type CallExpression
+
+```go
+type CallExpression struct {
+	Callee           Expression
+	LeftParenthesis  file.Idx
+	ArgumentList     []Expression
+	RightParenthesis file.Idx
+}
+```
+
+
+#### func (*CallExpression) Idx0
+
+```go
+func (self *CallExpression) Idx0() file.Idx
+```
+
+#### func (*CallExpression) Idx1
+
+```go
+func (self *CallExpression) Idx1() file.Idx
+```
+
+#### type CaseStatement
+
+```go
+type CaseStatement struct {
+	Case       file.Idx
+	Test       Expression
+	Consequent []Statement
+}
+```
+
+
+#### func (*CaseStatement) Idx0
+
+```go
+func (self *CaseStatement) Idx0() file.Idx
+```
+
+#### func (*CaseStatement) Idx1
+
+```go
+func (self *CaseStatement) Idx1() file.Idx
+```
+
+#### type CatchStatement
+
+```go
+type CatchStatement struct {
+	Catch     file.Idx
+	Parameter *Identifier
+	Body      Statement
+}
+```
+
+
+#### func (*CatchStatement) Idx0
+
+```go
+func (self *CatchStatement) Idx0() file.Idx
+```
+
+#### func (*CatchStatement) Idx1
+
+```go
+func (self *CatchStatement) Idx1() file.Idx
+```
+
+#### type ConditionalExpression
+
+```go
+type ConditionalExpression struct {
+	Test       Expression
+	Consequent Expression
+	Alternate  Expression
+}
+```
+
+
+#### func (*ConditionalExpression) Idx0
+
+```go
+func (self *ConditionalExpression) Idx0() file.Idx
+```
+
+#### func (*ConditionalExpression) Idx1
+
+```go
+func (self *ConditionalExpression) Idx1() file.Idx
+```
+
+#### type DebuggerStatement
+
+```go
+type DebuggerStatement struct {
+	Debugger file.Idx
+}
+```
+
+
+#### func (*DebuggerStatement) Idx0
+
+```go
+func (self *DebuggerStatement) Idx0() file.Idx
+```
+
+#### func (*DebuggerStatement) Idx1
+
+```go
+func (self *DebuggerStatement) Idx1() file.Idx
+```
+
+#### type Declaration
+
+```go
+type Declaration interface {
+	// contains filtered or unexported methods
+}
+```
+
+All declaration nodes implement the Declaration interface.
+
+#### type DoWhileStatement
+
+```go
+type DoWhileStatement struct {
+	Do   file.Idx
+	Test Expression
+	Body Statement
+}
+```
+
+
+#### func (*DoWhileStatement) Idx0
+
+```go
+func (self *DoWhileStatement) Idx0() file.Idx
+```
+
+#### func (*DoWhileStatement) Idx1
+
+```go
+func (self *DoWhileStatement) Idx1() file.Idx
+```
+
+#### type DotExpression
+
+```go
+type DotExpression struct {
+	Left       Expression
+	Identifier Identifier
+}
+```
+
+
+#### func (*DotExpression) Idx0
+
+```go
+func (self *DotExpression) Idx0() file.Idx
+```
+
+#### func (*DotExpression) Idx1
+
+```go
+func (self *DotExpression) Idx1() file.Idx
+```
+
+#### type EmptyStatement
+
+```go
+type EmptyStatement struct {
+	Semicolon file.Idx
+}
+```
+
+
+#### func (*EmptyStatement) Idx0
+
+```go
+func (self *EmptyStatement) Idx0() file.Idx
+```
+
+#### func (*EmptyStatement) Idx1
+
+```go
+func (self *EmptyStatement) Idx1() file.Idx
+```
+
+#### type Expression
+
+```go
+type Expression interface {
+	Node
+	// contains filtered or unexported methods
+}
+```
+
+All expression nodes implement the Expression interface.
+
+#### type ExpressionStatement
+
+```go
+type ExpressionStatement struct {
+	Expression Expression
+}
+```
+
+
+#### func (*ExpressionStatement) Idx0
+
+```go
+func (self *ExpressionStatement) Idx0() file.Idx
+```
+
+#### func (*ExpressionStatement) Idx1
+
+```go
+func (self *ExpressionStatement) Idx1() file.Idx
+```
+
+#### type ForInStatement
+
+```go
+type ForInStatement struct {
+	For    file.Idx
+	Into   Expression
+	Source Expression
+	Body   Statement
+}
+```
+
+
+#### func (*ForInStatement) Idx0
+
+```go
+func (self *ForInStatement) Idx0() file.Idx
+```
+
+#### func (*ForInStatement) Idx1
+
+```go
+func (self *ForInStatement) Idx1() file.Idx
+```
+
+#### type ForStatement
+
+```go
+type ForStatement struct {
+	For         file.Idx
+	Initializer Expression
+	Update      Expression
+	Test        Expression
+	Body        Statement
+}
+```
+
+
+#### func (*ForStatement) Idx0
+
+```go
+func (self *ForStatement) Idx0() file.Idx
+```
+
+#### func (*ForStatement) Idx1
+
+```go
+func (self *ForStatement) Idx1() file.Idx
+```
+
+#### type FunctionDeclaration
+
+```go
+type FunctionDeclaration struct {
+	Function *FunctionLiteral
+}
+```
+
+
+#### type FunctionLiteral
+
+```go
+type FunctionLiteral struct {
+	Function      file.Idx
+	Name          *Identifier
+	ParameterList *ParameterList
+	Body          Statement
+	Source        string
+
+	DeclarationList []Declaration
+}
+```
+
+
+#### func (*FunctionLiteral) Idx0
+
+```go
+func (self *FunctionLiteral) Idx0() file.Idx
+```
+
+#### func (*FunctionLiteral) Idx1
+
+```go
+func (self *FunctionLiteral) Idx1() file.Idx
+```
+
+#### type Identifier
+
+```go
+type Identifier struct {
+	Name string
+	Idx  file.Idx
+}
+```
+
+
+#### func (*Identifier) Idx0
+
+```go
+func (self *Identifier) Idx0() file.Idx
+```
+
+#### func (*Identifier) Idx1
+
+```go
+func (self *Identifier) Idx1() file.Idx
+```
+
+#### type IfStatement
+
+```go
+type IfStatement struct {
+	If         file.Idx
+	Test       Expression
+	Consequent Statement
+	Alternate  Statement
+}
+```
+
+
+#### func (*IfStatement) Idx0
+
+```go
+func (self *IfStatement) Idx0() file.Idx
+```
+
+#### func (*IfStatement) Idx1
+
+```go
+func (self *IfStatement) Idx1() file.Idx
+```
+
+#### type LabelledStatement
+
+```go
+type LabelledStatement struct {
+	Label     *Identifier
+	Colon     file.Idx
+	Statement Statement
+}
+```
+
+
+#### func (*LabelledStatement) Idx0
+
+```go
+func (self *LabelledStatement) Idx0() file.Idx
+```
+
+#### func (*LabelledStatement) Idx1
+
+```go
+func (self *LabelledStatement) Idx1() file.Idx
+```
+
+#### type NewExpression
+
+```go
+type NewExpression struct {
+	New              file.Idx
+	Callee           Expression
+	LeftParenthesis  file.Idx
+	ArgumentList     []Expression
+	RightParenthesis file.Idx
+}
+```
+
+
+#### func (*NewExpression) Idx0
+
+```go
+func (self *NewExpression) Idx0() file.Idx
+```
+
+#### func (*NewExpression) Idx1
+
+```go
+func (self *NewExpression) Idx1() file.Idx
+```
+
+#### type Node
+
+```go
+type Node interface {
+	Idx0() file.Idx // The index of the first character belonging to the node
+	Idx1() file.Idx // The index of the first character immediately after the node
+}
+```
+
+All nodes implement the Node interface.
+
+#### type NullLiteral
+
+```go
+type NullLiteral struct {
+	Idx     file.Idx
+	Literal string
+}
+```
+
+
+#### func (*NullLiteral) Idx0
+
+```go
+func (self *NullLiteral) Idx0() file.Idx
+```
+
+#### func (*NullLiteral) Idx1
+
+```go
+func (self *NullLiteral) Idx1() file.Idx
+```
+
+#### type NumberLiteral
+
+```go
+type NumberLiteral struct {
+	Idx     file.Idx
+	Literal string
+	Value   interface{}
+}
+```
+
+
+#### func (*NumberLiteral) Idx0
+
+```go
+func (self *NumberLiteral) Idx0() file.Idx
+```
+
+#### func (*NumberLiteral) Idx1
+
+```go
+func (self *NumberLiteral) Idx1() file.Idx
+```
+
+#### type ObjectLiteral
+
+```go
+type ObjectLiteral struct {
+	LeftBrace  file.Idx
+	RightBrace file.Idx
+	Value      []Property
+}
+```
+
+
+#### func (*ObjectLiteral) Idx0
+
+```go
+func (self *ObjectLiteral) Idx0() file.Idx
+```
+
+#### func (*ObjectLiteral) Idx1
+
+```go
+func (self *ObjectLiteral) Idx1() file.Idx
+```
+
+#### type ParameterList
+
+```go
+type ParameterList struct {
+	Opening file.Idx
+	List    []*Identifier
+	Closing file.Idx
+}
+```
+
+
+#### type Program
+
+```go
+type Program struct {
+	Body []Statement
+
+	DeclarationList []Declaration
+
+	File *file.File
+}
+```
+
+
+#### func (*Program) Idx0
+
+```go
+func (self *Program) Idx0() file.Idx
+```
+
+#### func (*Program) Idx1
+
+```go
+func (self *Program) Idx1() file.Idx
+```
+
+#### type Property
+
+```go
+type Property struct {
+	Key   string
+	Kind  string
+	Value Expression
+}
+```
+
+
+#### type RegExpLiteral
+
+```go
+type RegExpLiteral struct {
+	Idx     file.Idx
+	Literal string
+	Pattern string
+	Flags   string
+	Value   string
+}
+```
+
+
+#### func (*RegExpLiteral) Idx0
+
+```go
+func (self *RegExpLiteral) Idx0() file.Idx
+```
+
+#### func (*RegExpLiteral) Idx1
+
+```go
+func (self *RegExpLiteral) Idx1() file.Idx
+```
+
+#### type ReturnStatement
+
+```go
+type ReturnStatement struct {
+	Return   file.Idx
+	Argument Expression
+}
+```
+
+
+#### func (*ReturnStatement) Idx0
+
+```go
+func (self *ReturnStatement) Idx0() file.Idx
+```
+
+#### func (*ReturnStatement) Idx1
+
+```go
+func (self *ReturnStatement) Idx1() file.Idx
+```
+
+#### type SequenceExpression
+
+```go
+type SequenceExpression struct {
+	Sequence []Expression
+}
+```
+
+
+#### func (*SequenceExpression) Idx0
+
+```go
+func (self *SequenceExpression) Idx0() file.Idx
+```
+
+#### func (*SequenceExpression) Idx1
+
+```go
+func (self *SequenceExpression) Idx1() file.Idx
+```
+
+#### type Statement
+
+```go
+type Statement interface {
+	Node
+	// contains filtered or unexported methods
+}
+```
+
+All statement nodes implement the Statement interface.
+
+#### type StringLiteral
+
+```go
+type StringLiteral struct {
+	Idx     file.Idx
+	Literal string
+	Value   string
+}
+```
+
+
+#### func (*StringLiteral) Idx0
+
+```go
+func (self *StringLiteral) Idx0() file.Idx
+```
+
+#### func (*StringLiteral) Idx1
+
+```go
+func (self *StringLiteral) Idx1() file.Idx
+```
+
+#### type SwitchStatement
+
+```go
+type SwitchStatement struct {
+	Switch       file.Idx
+	Discriminant Expression
+	Default      int
+	Body         []*CaseStatement
+}
+```
+
+
+#### func (*SwitchStatement) Idx0
+
+```go
+func (self *SwitchStatement) Idx0() file.Idx
+```
+
+#### func (*SwitchStatement) Idx1
+
+```go
+func (self *SwitchStatement) Idx1() file.Idx
+```
+
+#### type ThisExpression
+
+```go
+type ThisExpression struct {
+	Idx file.Idx
+}
+```
+
+
+#### func (*ThisExpression) Idx0
+
+```go
+func (self *ThisExpression) Idx0() file.Idx
+```
+
+#### func (*ThisExpression) Idx1
+
+```go
+func (self *ThisExpression) Idx1() file.Idx
+```
+
+#### type ThrowStatement
+
+```go
+type ThrowStatement struct {
+	Throw    file.Idx
+	Argument Expression
+}
+```
+
+
+#### func (*ThrowStatement) Idx0
+
+```go
+func (self *ThrowStatement) Idx0() file.Idx
+```
+
+#### func (*ThrowStatement) Idx1
+
+```go
+func (self *ThrowStatement) Idx1() file.Idx
+```
+
+#### type TryStatement
+
+```go
+type TryStatement struct {
+	Try     file.Idx
+	Body    Statement
+	Catch   *CatchStatement
+	Finally Statement
+}
+```
+
+
+#### func (*TryStatement) Idx0
+
+```go
+func (self *TryStatement) Idx0() file.Idx
+```
+
+#### func (*TryStatement) Idx1
+
+```go
+func (self *TryStatement) Idx1() file.Idx
+```
+
+#### type UnaryExpression
+
+```go
+type UnaryExpression struct {
+	Operator token.Token
+	Idx      file.Idx // If a prefix operation
+	Operand  Expression
+	Postfix  bool
+}
+```
+
+
+#### func (*UnaryExpression) Idx0
+
+```go
+func (self *UnaryExpression) Idx0() file.Idx
+```
+
+#### func (*UnaryExpression) Idx1
+
+```go
+func (self *UnaryExpression) Idx1() file.Idx
+```
+
+#### type VariableDeclaration
+
+```go
+type VariableDeclaration struct {
+	Var  file.Idx
+	List []*VariableExpression
+}
+```
+
+
+#### type VariableExpression
+
+```go
+type VariableExpression struct {
+	Name        string
+	Idx         file.Idx
+	Initializer Expression
+}
+```
+
+
+#### func (*VariableExpression) Idx0
+
+```go
+func (self *VariableExpression) Idx0() file.Idx
+```
+
+#### func (*VariableExpression) Idx1
+
+```go
+func (self *VariableExpression) Idx1() file.Idx
+```
+
+#### type VariableStatement
+
+```go
+type VariableStatement struct {
+	Var  file.Idx
+	List []Expression
+}
+```
+
+
+#### func (*VariableStatement) Idx0
+
+```go
+func (self *VariableStatement) Idx0() file.Idx
+```
+
+#### func (*VariableStatement) Idx1
+
+```go
+func (self *VariableStatement) Idx1() file.Idx
+```
+
+#### type WhileStatement
+
+```go
+type WhileStatement struct {
+	While file.Idx
+	Test  Expression
+	Body  Statement
+}
+```
+
+
+#### func (*WhileStatement) Idx0
+
+```go
+func (self *WhileStatement) Idx0() file.Idx
+```
+
+#### func (*WhileStatement) Idx1
+
+```go
+func (self *WhileStatement) Idx1() file.Idx
+```
+
+#### type WithStatement
+
+```go
+type WithStatement struct {
+	With   file.Idx
+	Object Expression
+	Body   Statement
+}
+```
+
+
+#### func (*WithStatement) Idx0
+
+```go
+func (self *WithStatement) Idx0() file.Idx
+```
+
+#### func (*WithStatement) Idx1
+
+```go
+func (self *WithStatement) Idx1() file.Idx
+```
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/ast/comments.go

@@ -0,0 +1,279 @@
+package ast
+
+import (
+	"fmt"
+
+	"github.com/robertkrimen/otto/file"
+)
+
+// CommentPosition determines where the comment is in a given context
+type CommentPosition int
+
+const (
+	_        CommentPosition = iota
+	LEADING                  // Before the pertinent expression
+	TRAILING                 // After the pertinent expression
+	KEY                      // Before a key in an object
+	COLON                    // After a colon in a field declaration
+	FINAL                    // Final comments in a block, not belonging to a specific expression or the comment after a trailing , in an array or object literal
+	IF                       // After an if keyword
+	WHILE                    // After a while keyword
+	DO                       // After do keyword
+	FOR                      // After a for keyword
+	WITH                     // After a with keyword
+	TBD
+)
+
+// Comment contains the data of the comment
+type Comment struct {
+	Begin    file.Idx
+	Text     string
+	Position CommentPosition
+}
+
+// NewComment creates a new comment
+func NewComment(text string, idx file.Idx) *Comment {
+	comment := &Comment{
+		Begin:    idx,
+		Text:     text,
+		Position: TBD,
+	}
+
+	return comment
+}
+
+// String returns a stringified version of the position
+func (cp CommentPosition) String() string {
+	switch cp {
+	case LEADING:
+		return "Leading"
+	case TRAILING:
+		return "Trailing"
+	case KEY:
+		return "Key"
+	case COLON:
+		return "Colon"
+	case FINAL:
+		return "Final"
+	case IF:
+		return "If"
+	case WHILE:
+		return "While"
+	case DO:
+		return "Do"
+	case FOR:
+		return "For"
+	case WITH:
+		return "With"
+	default:
+		return "???"
+	}
+}
+
+// String returns a stringified version of the comment
+func (c Comment) String() string {
+	return fmt.Sprintf("Comment: %v", c.Text)
+}
+
+// Comments defines the current view of comments from the parser
+type Comments struct {
+	// CommentMap is a reference to the parser comment map
+	CommentMap CommentMap
+	// Comments lists the comments scanned, not linked to a node yet
+	Comments []*Comment
+	// future lists the comments after a line break during a sequence of comments
+	future []*Comment
+	// Current is node for which comments are linked to
+	Current Expression
+
+	// wasLineBreak determines if a line break occured while scanning for comments
+	wasLineBreak bool
+	// primary determines whether or not processing a primary expression
+	primary bool
+	// afterBlock determines whether or not being after a block statement
+	afterBlock bool
+}
+
+func NewComments() *Comments {
+	comments := &Comments{
+		CommentMap: CommentMap{},
+	}
+
+	return comments
+}
+
+func (c *Comments) String() string {
+	return fmt.Sprintf("NODE: %v, Comments: %v, Future: %v(LINEBREAK:%v)", c.Current, len(c.Comments), len(c.future), c.wasLineBreak)
+}
+
+// FetchAll returns all the currently scanned comments,
+// including those from the next line
+func (c *Comments) FetchAll() []*Comment {
+	defer func() {
+		c.Comments = nil
+		c.future = nil
+	}()
+
+	return append(c.Comments, c.future...)
+}
+
+// Fetch returns all the currently scanned comments
+func (c *Comments) Fetch() []*Comment {
+	defer func() {
+		c.Comments = nil
+	}()
+
+	return c.Comments
+}
+
+// ResetLineBreak marks the beginning of a new statement
+func (c *Comments) ResetLineBreak() {
+	c.wasLineBreak = false
+}
+
+// MarkPrimary will mark the context as processing a primary expression
+func (c *Comments) MarkPrimary() {
+	c.primary = true
+	c.wasLineBreak = false
+}
+
+// AfterBlock will mark the context as being after a block.
+func (c *Comments) AfterBlock() {
+	c.afterBlock = true
+}
+
+// AddComment adds a comment to the view.
+// Depending on the context, comments are added normally or as post line break.
+func (c *Comments) AddComment(comment *Comment) {
+	if c.primary {
+		if !c.wasLineBreak {
+			c.Comments = append(c.Comments, comment)
+		} else {
+			c.future = append(c.future, comment)
+		}
+	} else {
+		if !c.wasLineBreak || (c.Current == nil && !c.afterBlock) {
+			c.Comments = append(c.Comments, comment)
+		} else {
+			c.future = append(c.future, comment)
+		}
+	}
+}
+
+// MarkComments will mark the found comments as the given position.
+func (c *Comments) MarkComments(position CommentPosition) {
+	for _, comment := range c.Comments {
+		if comment.Position == TBD {
+			comment.Position = position
+		}
+	}
+	for _, c := range c.future {
+		if c.Position == TBD {
+			c.Position = position
+		}
+	}
+}
+
+// Unset the current node and apply the comments to the current expression.
+// Resets context variables.
+func (c *Comments) Unset() {
+	if c.Current != nil {
+		c.applyComments(c.Current, c.Current, TRAILING)
+		c.Current = nil
+	}
+	c.wasLineBreak = false
+	c.primary = false
+	c.afterBlock = false
+}
+
+// SetExpression sets the current expression.
+// It is applied the found comments, unless the previous expression has not been unset.
+// It is skipped if the node is already set or if it is a part of the previous node.
+func (c *Comments) SetExpression(node Expression) {
+	// Skipping same node
+	if c.Current == node {
+		return
+	}
+	if c.Current != nil && c.Current.Idx1() == node.Idx1() {
+		c.Current = node
+		return
+	}
+	previous := c.Current
+	c.Current = node
+
+	// Apply the found comments and futures to the node and the previous.
+	c.applyComments(node, previous, TRAILING)
+}
+
+// PostProcessNode applies all found comments to the given node
+func (c *Comments) PostProcessNode(node Node) {
+	c.applyComments(node, nil, TRAILING)
+}
+
+// applyComments applies both the comments and the future comments to the given node and the previous one,
+// based on the context.
+func (c *Comments) applyComments(node, previous Node, position CommentPosition) {
+	if previous != nil {
+		c.CommentMap.AddComments(previous, c.Comments, position)
+		c.Comments = nil
+	} else {
+		c.CommentMap.AddComments(node, c.Comments, position)
+		c.Comments = nil
+	}
+	// Only apply the future comments to the node if the previous is set.
+	// This is for detecting end of line comments and which node comments on the following lines belongs to
+	if previous != nil {
+		c.CommentMap.AddComments(node, c.future, position)
+		c.future = nil
+	}
+}
+
+// AtLineBreak will mark a line break
+func (c *Comments) AtLineBreak() {
+	c.wasLineBreak = true
+}
+
+// CommentMap is the data structure where all found comments are stored
+type CommentMap map[Node][]*Comment
+
+// AddComment adds a single comment to the map
+func (cm CommentMap) AddComment(node Node, comment *Comment) {
+	list := cm[node]
+	list = append(list, comment)
+
+	cm[node] = list
+}
+
+// AddComments adds a slice of comments, given a node and an updated position
+func (cm CommentMap) AddComments(node Node, comments []*Comment, position CommentPosition) {
+	for _, comment := range comments {
+		if comment.Position == TBD {
+			comment.Position = position
+		}
+		cm.AddComment(node, comment)
+	}
+}
+
+// Size returns the size of the map
+func (cm CommentMap) Size() int {
+	size := 0
+	for _, comments := range cm {
+		size += len(comments)
+	}
+
+	return size
+}
+
+// MoveComments moves comments with a given position from a node to another
+func (cm CommentMap) MoveComments(from, to Node, position CommentPosition) {
+	for i, c := range cm[from] {
+		if c.Position == position {
+			cm.AddComment(to, c)
+
+			// Remove the comment from the "from" slice
+			cm[from][i] = cm[from][len(cm[from])-1]
+			cm[from][len(cm[from])-1] = nil
+			cm[from] = cm[from][:len(cm[from])-1]
+		}
+	}
+}

vendor/github.com/robertkrimen/otto/ast/node.go

@@ -0,0 +1,515 @@
+/*
+Package ast declares types representing a JavaScript AST.
+
+Warning
+
+The parser and AST interfaces are still works-in-progress (particularly where
+node types are concerned) and may change in the future.
+
+*/
+package ast
+
+import (
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+)
+
+// All nodes implement the Node interface.
+type Node interface {
+	Idx0() file.Idx // The index of the first character belonging to the node
+	Idx1() file.Idx // The index of the first character immediately after the node
+}
+
+// ========== //
+// Expression //
+// ========== //
+
+type (
+	// All expression nodes implement the Expression interface.
+	Expression interface {
+		Node
+		_expressionNode()
+	}
+
+	ArrayLiteral struct {
+		LeftBracket  file.Idx
+		RightBracket file.Idx
+		Value        []Expression
+	}
+
+	AssignExpression struct {
+		Operator token.Token
+		Left     Expression
+		Right    Expression
+	}
+
+	BadExpression struct {
+		From file.Idx
+		To   file.Idx
+	}
+
+	BinaryExpression struct {
+		Operator   token.Token
+		Left       Expression
+		Right      Expression
+		Comparison bool
+	}
+
+	BooleanLiteral struct {
+		Idx     file.Idx
+		Literal string
+		Value   bool
+	}
+
+	BracketExpression struct {
+		Left         Expression
+		Member       Expression
+		LeftBracket  file.Idx
+		RightBracket file.Idx
+	}
+
+	CallExpression struct {
+		Callee           Expression
+		LeftParenthesis  file.Idx
+		ArgumentList     []Expression
+		RightParenthesis file.Idx
+	}
+
+	ConditionalExpression struct {
+		Test       Expression
+		Consequent Expression
+		Alternate  Expression
+	}
+
+	DotExpression struct {
+		Left       Expression
+		Identifier *Identifier
+	}
+
+	EmptyExpression struct {
+		Begin file.Idx
+		End   file.Idx
+	}
+
+	FunctionLiteral struct {
+		Function      file.Idx
+		Name          *Identifier
+		ParameterList *ParameterList
+		Body          Statement
+		Source        string
+
+		DeclarationList []Declaration
+	}
+
+	Identifier struct {
+		Name string
+		Idx  file.Idx
+	}
+
+	NewExpression struct {
+		New              file.Idx
+		Callee           Expression
+		LeftParenthesis  file.Idx
+		ArgumentList     []Expression
+		RightParenthesis file.Idx
+	}
+
+	NullLiteral struct {
+		Idx     file.Idx
+		Literal string
+	}
+
+	NumberLiteral struct {
+		Idx     file.Idx
+		Literal string
+		Value   interface{}
+	}
+
+	ObjectLiteral struct {
+		LeftBrace  file.Idx
+		RightBrace file.Idx
+		Value      []Property
+	}
+
+	ParameterList struct {
+		Opening file.Idx
+		List    []*Identifier
+		Closing file.Idx
+	}
+
+	Property struct {
+		Key   string
+		Kind  string
+		Value Expression
+	}
+
+	RegExpLiteral struct {
+		Idx     file.Idx
+		Literal string
+		Pattern string
+		Flags   string
+		Value   string
+	}
+
+	SequenceExpression struct {
+		Sequence []Expression
+	}
+
+	StringLiteral struct {
+		Idx     file.Idx
+		Literal string
+		Value   string
+	}
+
+	ThisExpression struct {
+		Idx file.Idx
+	}
+
+	UnaryExpression struct {
+		Operator token.Token
+		Idx      file.Idx // If a prefix operation
+		Operand  Expression
+		Postfix  bool
+	}
+
+	VariableExpression struct {
+		Name        string
+		Idx         file.Idx
+		Initializer Expression
+	}
+)
+
+// _expressionNode
+
+func (*ArrayLiteral) _expressionNode()          {}
+func (*AssignExpression) _expressionNode()      {}
+func (*BadExpression) _expressionNode()         {}
+func (*BinaryExpression) _expressionNode()      {}
+func (*BooleanLiteral) _expressionNode()        {}
+func (*BracketExpression) _expressionNode()     {}
+func (*CallExpression) _expressionNode()        {}
+func (*ConditionalExpression) _expressionNode() {}
+func (*DotExpression) _expressionNode()         {}
+func (*EmptyExpression) _expressionNode()       {}
+func (*FunctionLiteral) _expressionNode()       {}
+func (*Identifier) _expressionNode()            {}
+func (*NewExpression) _expressionNode()         {}
+func (*NullLiteral) _expressionNode()           {}
+func (*NumberLiteral) _expressionNode()         {}
+func (*ObjectLiteral) _expressionNode()         {}
+func (*RegExpLiteral) _expressionNode()         {}
+func (*SequenceExpression) _expressionNode()    {}
+func (*StringLiteral) _expressionNode()         {}
+func (*ThisExpression) _expressionNode()        {}
+func (*UnaryExpression) _expressionNode()       {}
+func (*VariableExpression) _expressionNode()    {}
+
+// ========= //
+// Statement //
+// ========= //
+
+type (
+	// All statement nodes implement the Statement interface.
+	Statement interface {
+		Node
+		_statementNode()
+	}
+
+	BadStatement struct {
+		From file.Idx
+		To   file.Idx
+	}
+
+	BlockStatement struct {
+		LeftBrace  file.Idx
+		List       []Statement
+		RightBrace file.Idx
+	}
+
+	BranchStatement struct {
+		Idx   file.Idx
+		Token token.Token
+		Label *Identifier
+	}
+
+	CaseStatement struct {
+		Case       file.Idx
+		Test       Expression
+		Consequent []Statement
+	}
+
+	CatchStatement struct {
+		Catch     file.Idx
+		Parameter *Identifier
+		Body      Statement
+	}
+
+	DebuggerStatement struct {
+		Debugger file.Idx
+	}
+
+	DoWhileStatement struct {
+		Do   file.Idx
+		Test Expression
+		Body Statement
+	}
+
+	EmptyStatement struct {
+		Semicolon file.Idx
+	}
+
+	ExpressionStatement struct {
+		Expression Expression
+	}
+
+	ForInStatement struct {
+		For    file.Idx
+		Into   Expression
+		Source Expression
+		Body   Statement
+	}
+
+	ForStatement struct {
+		For         file.Idx
+		Initializer Expression
+		Update      Expression
+		Test        Expression
+		Body        Statement
+	}
+
+	FunctionStatement struct {
+		Function *FunctionLiteral
+	}
+
+	IfStatement struct {
+		If         file.Idx
+		Test       Expression
+		Consequent Statement
+		Alternate  Statement
+	}
+
+	LabelledStatement struct {
+		Label     *Identifier
+		Colon     file.Idx
+		Statement Statement
+	}
+
+	ReturnStatement struct {
+		Return   file.Idx
+		Argument Expression
+	}
+
+	SwitchStatement struct {
+		Switch       file.Idx
+		Discriminant Expression
+		Default      int
+		Body         []*CaseStatement
+	}
+
+	ThrowStatement struct {
+		Throw    file.Idx
+		Argument Expression
+	}
+
+	TryStatement struct {
+		Try     file.Idx
+		Body    Statement
+		Catch   *CatchStatement
+		Finally Statement
+	}
+
+	VariableStatement struct {
+		Var  file.Idx
+		List []Expression
+	}
+
+	WhileStatement struct {
+		While file.Idx
+		Test  Expression
+		Body  Statement
+	}
+
+	WithStatement struct {
+		With   file.Idx
+		Object Expression
+		Body   Statement
+	}
+)
+
+// _statementNode
+
+func (*BadStatement) _statementNode()        {}
+func (*BlockStatement) _statementNode()      {}
+func (*BranchStatement) _statementNode()     {}
+func (*CaseStatement) _statementNode()       {}
+func (*CatchStatement) _statementNode()      {}
+func (*DebuggerStatement) _statementNode()   {}
+func (*DoWhileStatement) _statementNode()    {}
+func (*EmptyStatement) _statementNode()      {}
+func (*ExpressionStatement) _statementNode() {}
+func (*ForInStatement) _statementNode()      {}
+func (*ForStatement) _statementNode()        {}
+func (*FunctionStatement) _statementNode()   {}
+func (*IfStatement) _statementNode()         {}
+func (*LabelledStatement) _statementNode()   {}
+func (*ReturnStatement) _statementNode()     {}
+func (*SwitchStatement) _statementNode()     {}
+func (*ThrowStatement) _statementNode()      {}
+func (*TryStatement) _statementNode()        {}
+func (*VariableStatement) _statementNode()   {}
+func (*WhileStatement) _statementNode()      {}
+func (*WithStatement) _statementNode()       {}
+
+// =========== //
+// Declaration //
+// =========== //
+
+type (
+	// All declaration nodes implement the Declaration interface.
+	Declaration interface {
+		_declarationNode()
+	}
+
+	FunctionDeclaration struct {
+		Function *FunctionLiteral
+	}
+
+	VariableDeclaration struct {
+		Var  file.Idx
+		List []*VariableExpression
+	}
+)
+
+// _declarationNode
+
+func (*FunctionDeclaration) _declarationNode() {}
+func (*VariableDeclaration) _declarationNode() {}
+
+// ==== //
+// Node //
+// ==== //
+
+type Program struct {
+	Body []Statement
+
+	DeclarationList []Declaration
+
+	File *file.File
+
+	Comments CommentMap
+}
+
+// ==== //
+// Idx0 //
+// ==== //
+
+func (self *ArrayLiteral) Idx0() file.Idx          { return self.LeftBracket }
+func (self *AssignExpression) Idx0() file.Idx      { return self.Left.Idx0() }
+func (self *BadExpression) Idx0() file.Idx         { return self.From }
+func (self *BinaryExpression) Idx0() file.Idx      { return self.Left.Idx0() }
+func (self *BooleanLiteral) Idx0() file.Idx        { return self.Idx }
+func (self *BracketExpression) Idx0() file.Idx     { return self.Left.Idx0() }
+func (self *CallExpression) Idx0() file.Idx        { return self.Callee.Idx0() }
+func (self *ConditionalExpression) Idx0() file.Idx { return self.Test.Idx0() }
+func (self *DotExpression) Idx0() file.Idx         { return self.Left.Idx0() }
+func (self *EmptyExpression) Idx0() file.Idx       { return self.Begin }
+func (self *FunctionLiteral) Idx0() file.Idx       { return self.Function }
+func (self *Identifier) Idx0() file.Idx            { return self.Idx }
+func (self *NewExpression) Idx0() file.Idx         { return self.New }
+func (self *NullLiteral) Idx0() file.Idx           { return self.Idx }
+func (self *NumberLiteral) Idx0() file.Idx         { return self.Idx }
+func (self *ObjectLiteral) Idx0() file.Idx         { return self.LeftBrace }
+func (self *RegExpLiteral) Idx0() file.Idx         { return self.Idx }
+func (self *SequenceExpression) Idx0() file.Idx    { return self.Sequence[0].Idx0() }
+func (self *StringLiteral) Idx0() file.Idx         { return self.Idx }
+func (self *ThisExpression) Idx0() file.Idx        { return self.Idx }
+func (self *UnaryExpression) Idx0() file.Idx       { return self.Idx }
+func (self *VariableExpression) Idx0() file.Idx    { return self.Idx }
+
+func (self *BadStatement) Idx0() file.Idx        { return self.From }
+func (self *BlockStatement) Idx0() file.Idx      { return self.LeftBrace }
+func (self *BranchStatement) Idx0() file.Idx     { return self.Idx }
+func (self *CaseStatement) Idx0() file.Idx       { return self.Case }
+func (self *CatchStatement) Idx0() file.Idx      { return self.Catch }
+func (self *DebuggerStatement) Idx0() file.Idx   { return self.Debugger }
+func (self *DoWhileStatement) Idx0() file.Idx    { return self.Do }
+func (self *EmptyStatement) Idx0() file.Idx      { return self.Semicolon }
+func (self *ExpressionStatement) Idx0() file.Idx { return self.Expression.Idx0() }
+func (self *ForInStatement) Idx0() file.Idx      { return self.For }
+func (self *ForStatement) Idx0() file.Idx        { return self.For }
+func (self *FunctionStatement) Idx0() file.Idx   { return self.Function.Idx0() }
+func (self *IfStatement) Idx0() file.Idx         { return self.If }
+func (self *LabelledStatement) Idx0() file.Idx   { return self.Label.Idx0() }
+func (self *Program) Idx0() file.Idx             { return self.Body[0].Idx0() }
+func (self *ReturnStatement) Idx0() file.Idx     { return self.Return }
+func (self *SwitchStatement) Idx0() file.Idx     { return self.Switch }
+func (self *ThrowStatement) Idx0() file.Idx      { return self.Throw }
+func (self *TryStatement) Idx0() file.Idx        { return self.Try }
+func (self *VariableStatement) Idx0() file.Idx   { return self.Var }
+func (self *WhileStatement) Idx0() file.Idx      { return self.While }
+func (self *WithStatement) Idx0() file.Idx       { return self.With }
+
+// ==== //
+// Idx1 //
+// ==== //
+
+func (self *ArrayLiteral) Idx1() file.Idx          { return self.RightBracket }
+func (self *AssignExpression) Idx1() file.Idx      { return self.Right.Idx1() }
+func (self *BadExpression) Idx1() file.Idx         { return self.To }
+func (self *BinaryExpression) Idx1() file.Idx      { return self.Right.Idx1() }
+func (self *BooleanLiteral) Idx1() file.Idx        { return file.Idx(int(self.Idx) + len(self.Literal)) }
+func (self *BracketExpression) Idx1() file.Idx     { return self.RightBracket + 1 }
+func (self *CallExpression) Idx1() file.Idx        { return self.RightParenthesis + 1 }
+func (self *ConditionalExpression) Idx1() file.Idx { return self.Test.Idx1() }
+func (self *DotExpression) Idx1() file.Idx         { return self.Identifier.Idx1() }
+func (self *EmptyExpression) Idx1() file.Idx       { return self.End }
+func (self *FunctionLiteral) Idx1() file.Idx       { return self.Body.Idx1() }
+func (self *Identifier) Idx1() file.Idx            { return file.Idx(int(self.Idx) + len(self.Name)) }
+func (self *NewExpression) Idx1() file.Idx         { return self.RightParenthesis + 1 }
+func (self *NullLiteral) Idx1() file.Idx           { return file.Idx(int(self.Idx) + 4) } // "null"
+func (self *NumberLiteral) Idx1() file.Idx         { return file.Idx(int(self.Idx) + len(self.Literal)) }
+func (self *ObjectLiteral) Idx1() file.Idx         { return self.RightBrace }
+func (self *RegExpLiteral) Idx1() file.Idx         { return file.Idx(int(self.Idx) + len(self.Literal)) }
+func (self *SequenceExpression) Idx1() file.Idx    { return self.Sequence[0].Idx1() }
+func (self *StringLiteral) Idx1() file.Idx         { return file.Idx(int(self.Idx) + len(self.Literal)) }
+func (self *ThisExpression) Idx1() file.Idx        { return self.Idx + 4 }
+func (self *UnaryExpression) Idx1() file.Idx {
+	if self.Postfix {
+		return self.Operand.Idx1() + 2 // ++ --
+	}
+	return self.Operand.Idx1()
+}
+func (self *VariableExpression) Idx1() file.Idx {
+	if self.Initializer == nil {
+		return file.Idx(int(self.Idx) + len(self.Name) + 1)
+	}
+	return self.Initializer.Idx1()
+}
+
+func (self *BadStatement) Idx1() file.Idx        { return self.To }
+func (self *BlockStatement) Idx1() file.Idx      { return self.RightBrace + 1 }
+func (self *BranchStatement) Idx1() file.Idx     { return self.Idx }
+func (self *CaseStatement) Idx1() file.Idx       { return self.Consequent[len(self.Consequent)-1].Idx1() }
+func (self *CatchStatement) Idx1() file.Idx      { return self.Body.Idx1() }
+func (self *DebuggerStatement) Idx1() file.Idx   { return self.Debugger + 8 }
+func (self *DoWhileStatement) Idx1() file.Idx    { return self.Test.Idx1() }
+func (self *EmptyStatement) Idx1() file.Idx      { return self.Semicolon + 1 }
+func (self *ExpressionStatement) Idx1() file.Idx { return self.Expression.Idx1() }
+func (self *ForInStatement) Idx1() file.Idx      { return self.Body.Idx1() }
+func (self *ForStatement) Idx1() file.Idx        { return self.Body.Idx1() }
+func (self *FunctionStatement) Idx1() file.Idx   { return self.Function.Idx1() }
+func (self *IfStatement) Idx1() file.Idx {
+	if self.Alternate != nil {
+		return self.Alternate.Idx1()
+	}
+	return self.Consequent.Idx1()
+}
+func (self *LabelledStatement) Idx1() file.Idx { return self.Colon + 1 }
+func (self *Program) Idx1() file.Idx           { return self.Body[len(self.Body)-1].Idx1() }
+func (self *ReturnStatement) Idx1() file.Idx   { return self.Return }
+func (self *SwitchStatement) Idx1() file.Idx   { return self.Body[len(self.Body)-1].Idx1() }
+func (self *ThrowStatement) Idx1() file.Idx    { return self.Throw }
+func (self *TryStatement) Idx1() file.Idx      { return self.Try }
+func (self *VariableStatement) Idx1() file.Idx { return self.List[len(self.List)-1].Idx1() }
+func (self *WhileStatement) Idx1() file.Idx    { return self.Body.Idx1() }
+func (self *WithStatement) Idx1() file.Idx     { return self.Body.Idx1() }

vendor/github.com/robertkrimen/otto/ast/walk.go

@@ -0,0 +1,217 @@
+package ast
+
+import "fmt"
+
+// Visitor Enter method is invoked for each node encountered by Walk.
+// If the result visitor w is not nil, Walk visits each of the children
+// of node with the visitor v, followed by a call of the Exit method.
+type Visitor interface {
+	Enter(n Node) (v Visitor)
+	Exit(n Node)
+}
+
+// Walk traverses an AST in depth-first order: It starts by calling
+// v.Enter(node); node must not be nil. If the visitor v returned by
+// v.Enter(node) is not nil, Walk is invoked recursively with visitor
+// v for each of the non-nil children of node, followed by a call
+// of v.Exit(node).
+func Walk(v Visitor, n Node) {
+	if n == nil {
+		return
+	}
+	if v = v.Enter(n); v == nil {
+		return
+	}
+
+	defer v.Exit(n)
+
+	switch n := n.(type) {
+	case *ArrayLiteral:
+		if n != nil {
+			for _, ex := range n.Value {
+				Walk(v, ex)
+			}
+		}
+	case *AssignExpression:
+		if n != nil {
+			Walk(v, n.Left)
+			Walk(v, n.Right)
+		}
+	case *BadExpression:
+	case *BinaryExpression:
+		if n != nil {
+			Walk(v, n.Left)
+			Walk(v, n.Right)
+		}
+	case *BlockStatement:
+		if n != nil {
+			for _, s := range n.List {
+				Walk(v, s)
+			}
+		}
+	case *BooleanLiteral:
+	case *BracketExpression:
+		if n != nil {
+			Walk(v, n.Left)
+			Walk(v, n.Member)
+		}
+	case *BranchStatement:
+		if n != nil {
+			Walk(v, n.Label)
+		}
+	case *CallExpression:
+		if n != nil {
+			Walk(v, n.Callee)
+			for _, a := range n.ArgumentList {
+				Walk(v, a)
+			}
+		}
+	case *CaseStatement:
+		if n != nil {
+			Walk(v, n.Test)
+			for _, c := range n.Consequent {
+				Walk(v, c)
+			}
+		}
+	case *CatchStatement:
+		if n != nil {
+			Walk(v, n.Parameter)
+			Walk(v, n.Body)
+		}
+	case *ConditionalExpression:
+		if n != nil {
+			Walk(v, n.Test)
+			Walk(v, n.Consequent)
+			Walk(v, n.Alternate)
+		}
+	case *DebuggerStatement:
+	case *DoWhileStatement:
+		if n != nil {
+			Walk(v, n.Test)
+			Walk(v, n.Body)
+		}
+	case *DotExpression:
+		if n != nil {
+			Walk(v, n.Left)
+		}
+	case *EmptyExpression:
+	case *EmptyStatement:
+	case *ExpressionStatement:
+		if n != nil {
+			Walk(v, n.Expression)
+		}
+	case *ForInStatement:
+		if n != nil {
+			Walk(v, n.Into)
+			Walk(v, n.Source)
+			Walk(v, n.Body)
+		}
+	case *ForStatement:
+		if n != nil {
+			Walk(v, n.Initializer)
+			Walk(v, n.Update)
+			Walk(v, n.Test)
+			Walk(v, n.Body)
+		}
+	case *FunctionLiteral:
+		if n != nil {
+			Walk(v, n.Name)
+			for _, p := range n.ParameterList.List {
+				Walk(v, p)
+			}
+			Walk(v, n.Body)
+		}
+	case *FunctionStatement:
+		if n != nil {
+			Walk(v, n.Function)
+		}
+	case *Identifier:
+	case *IfStatement:
+		if n != nil {
+			Walk(v, n.Test)
+			Walk(v, n.Consequent)
+			Walk(v, n.Alternate)
+		}
+	case *LabelledStatement:
+		if n != nil {
+			Walk(v, n.Statement)
+		}
+	case *NewExpression:
+		if n != nil {
+			Walk(v, n.Callee)
+			for _, a := range n.ArgumentList {
+				Walk(v, a)
+			}
+		}
+	case *NullLiteral:
+	case *NumberLiteral:
+	case *ObjectLiteral:
+		if n != nil {
+			for _, p := range n.Value {
+				Walk(v, p.Value)
+			}
+		}
+	case *Program:
+		if n != nil {
+			for _, b := range n.Body {
+				Walk(v, b)
+			}
+		}
+	case *RegExpLiteral:
+	case *ReturnStatement:
+		if n != nil {
+			Walk(v, n.Argument)
+		}
+	case *SequenceExpression:
+		if n != nil {
+			for _, e := range n.Sequence {
+				Walk(v, e)
+			}
+		}
+	case *StringLiteral:
+	case *SwitchStatement:
+		if n != nil {
+			Walk(v, n.Discriminant)
+			for _, c := range n.Body {
+				Walk(v, c)
+			}
+		}
+	case *ThisExpression:
+	case *ThrowStatement:
+		if n != nil {
+			Walk(v, n.Argument)
+		}
+	case *TryStatement:
+		if n != nil {
+			Walk(v, n.Body)
+			Walk(v, n.Catch)
+			Walk(v, n.Finally)
+		}
+	case *UnaryExpression:
+		if n != nil {
+			Walk(v, n.Operand)
+		}
+	case *VariableExpression:
+		if n != nil {
+			Walk(v, n.Initializer)
+		}
+	case *VariableStatement:
+		if n != nil {
+			for _, e := range n.List {
+				Walk(v, e)
+			}
+		}
+	case *WhileStatement:
+		if n != nil {
+			Walk(v, n.Test)
+			Walk(v, n.Body)
+		}
+	case *WithStatement:
+		if n != nil {
+			Walk(v, n.Object)
+			Walk(v, n.Body)
+		}
+	default:
+		panic(fmt.Sprintf("Walk: unexpected node type %T", n))
+	}
+}

vendor/github.com/robertkrimen/otto/builtin.go

@@ -0,0 +1,337 @@
+package otto
+
+import (
+	"encoding/hex"
+	"math"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf16"
+	"unicode/utf8"
+)
+
+// Global
+func builtinGlobal_eval(call FunctionCall) Value {
+	src := call.Argument(0)
+	if !src.IsString() {
+		return src
+	}
+	runtime := call.runtime
+	program := runtime.cmpl_parseOrThrow(src.string(), nil)
+	if !call.eval {
+		// Not a direct call to eval, so we enter the global ExecutionContext
+		runtime.enterGlobalScope()
+		defer runtime.leaveScope()
+	}
+	returnValue := runtime.cmpl_evaluate_nodeProgram(program, true)
+	if returnValue.isEmpty() {
+		return Value{}
+	}
+	return returnValue
+}
+
+func builtinGlobal_isNaN(call FunctionCall) Value {
+	value := call.Argument(0).float64()
+	return toValue_bool(math.IsNaN(value))
+}
+
+func builtinGlobal_isFinite(call FunctionCall) Value {
+	value := call.Argument(0).float64()
+	return toValue_bool(!math.IsNaN(value) && !math.IsInf(value, 0))
+}
+
+func digitValue(chr rune) int {
+	switch {
+	case '0' <= chr && chr <= '9':
+		return int(chr - '0')
+	case 'a' <= chr && chr <= 'z':
+		return int(chr - 'a' + 10)
+	case 'A' <= chr && chr <= 'Z':
+		return int(chr - 'A' + 10)
+	}
+	return 36 // Larger than any legal digit value
+}
+
+func builtinGlobal_parseInt(call FunctionCall) Value {
+	input := strings.Trim(call.Argument(0).string(), builtinString_trim_whitespace)
+	if len(input) == 0 {
+		return NaNValue()
+	}
+
+	radix := int(toInt32(call.Argument(1)))
+
+	negative := false
+	switch input[0] {
+	case '+':
+		input = input[1:]
+	case '-':
+		negative = true
+		input = input[1:]
+	}
+
+	strip := true
+	if radix == 0 {
+		radix = 10
+	} else {
+		if radix < 2 || radix > 36 {
+			return NaNValue()
+		} else if radix != 16 {
+			strip = false
+		}
+	}
+
+	switch len(input) {
+	case 0:
+		return NaNValue()
+	case 1:
+	default:
+		if strip {
+			if input[0] == '0' && (input[1] == 'x' || input[1] == 'X') {
+				input = input[2:]
+				radix = 16
+			}
+		}
+	}
+
+	base := radix
+	index := 0
+	for ; index < len(input); index++ {
+		digit := digitValue(rune(input[index])) // If not ASCII, then an error anyway
+		if digit >= base {
+			break
+		}
+	}
+	input = input[0:index]
+
+	value, err := strconv.ParseInt(input, radix, 64)
+	if err != nil {
+		if err.(*strconv.NumError).Err == strconv.ErrRange {
+			base := float64(base)
+			// Could just be a very large number (e.g. 0x8000000000000000)
+			var value float64
+			for _, chr := range input {
+				digit := float64(digitValue(chr))
+				if digit >= base {
+					return NaNValue()
+				}
+				value = value*base + digit
+			}
+			if negative {
+				value *= -1
+			}
+			return toValue_float64(value)
+		}
+		return NaNValue()
+	}
+	if negative {
+		value *= -1
+	}
+
+	return toValue_int64(value)
+}
+
+var parseFloat_matchBadSpecial = regexp.MustCompile(`[\+\-]?(?:[Ii]nf$|infinity)`)
+var parseFloat_matchValid = regexp.MustCompile(`[0-9eE\+\-\.]|Infinity`)
+
+func builtinGlobal_parseFloat(call FunctionCall) Value {
+	// Caveat emptor: This implementation does NOT match the specification
+	input := strings.Trim(call.Argument(0).string(), builtinString_trim_whitespace)
+
+	if parseFloat_matchBadSpecial.MatchString(input) {
+		return NaNValue()
+	}
+	value, err := strconv.ParseFloat(input, 64)
+	if err != nil {
+		for end := len(input); end > 0; end-- {
+			input := input[0:end]
+			if !parseFloat_matchValid.MatchString(input) {
+				return NaNValue()
+			}
+			value, err = strconv.ParseFloat(input, 64)
+			if err == nil {
+				break
+			}
+		}
+		if err != nil {
+			return NaNValue()
+		}
+	}
+	return toValue_float64(value)
+}
+
+// encodeURI/decodeURI
+
+func _builtinGlobal_encodeURI(call FunctionCall, escape *regexp.Regexp) Value {
+	value := call.Argument(0)
+	var input []uint16
+	switch vl := value.value.(type) {
+	case []uint16:
+		input = vl
+	default:
+		input = utf16.Encode([]rune(value.string()))
+	}
+	if len(input) == 0 {
+		return toValue_string("")
+	}
+	output := []byte{}
+	length := len(input)
+	encode := make([]byte, 4)
+	for index := 0; index < length; {
+		value := input[index]
+		decode := utf16.Decode(input[index : index+1])
+		if value >= 0xDC00 && value <= 0xDFFF {
+			panic(call.runtime.panicURIError("URI malformed"))
+		}
+		if value >= 0xD800 && value <= 0xDBFF {
+			index += 1
+			if index >= length {
+				panic(call.runtime.panicURIError("URI malformed"))
+			}
+			// input = ..., value, value1, ...
+			value1 := input[index]
+			if value1 < 0xDC00 || value1 > 0xDFFF {
+				panic(call.runtime.panicURIError("URI malformed"))
+			}
+			decode = []rune{((rune(value) - 0xD800) * 0x400) + (rune(value1) - 0xDC00) + 0x10000}
+		}
+		index += 1
+		size := utf8.EncodeRune(encode, decode[0])
+		encode := encode[0:size]
+		output = append(output, encode...)
+	}
+	{
+		value := escape.ReplaceAllFunc(output, func(target []byte) []byte {
+			// Probably a better way of doing this
+			if target[0] == ' ' {
+				return []byte("%20")
+			}
+			return []byte(url.QueryEscape(string(target)))
+		})
+		return toValue_string(string(value))
+	}
+}
+
+var encodeURI_Regexp = regexp.MustCompile(`([^~!@#$&*()=:/,;?+'])`)
+
+func builtinGlobal_encodeURI(call FunctionCall) Value {
+	return _builtinGlobal_encodeURI(call, encodeURI_Regexp)
+}
+
+var encodeURIComponent_Regexp = regexp.MustCompile(`([^~!*()'])`)
+
+func builtinGlobal_encodeURIComponent(call FunctionCall) Value {
+	return _builtinGlobal_encodeURI(call, encodeURIComponent_Regexp)
+}
+
+// 3B/2F/3F/3A/40/26/3D/2B/24/2C/23
+var decodeURI_guard = regexp.MustCompile(`(?i)(?:%)(3B|2F|3F|3A|40|26|3D|2B|24|2C|23)`)
+
+func _decodeURI(input string, reserve bool) (string, bool) {
+	if reserve {
+		input = decodeURI_guard.ReplaceAllString(input, "%25$1")
+	}
+	input = strings.Replace(input, "+", "%2B", -1) // Ugly hack to make QueryUnescape work with our use case
+	output, err := url.QueryUnescape(input)
+	if err != nil || !utf8.ValidString(output) {
+		return "", true
+	}
+	return output, false
+}
+
+func builtinGlobal_decodeURI(call FunctionCall) Value {
+	output, err := _decodeURI(call.Argument(0).string(), true)
+	if err {
+		panic(call.runtime.panicURIError("URI malformed"))
+	}
+	return toValue_string(output)
+}
+
+func builtinGlobal_decodeURIComponent(call FunctionCall) Value {
+	output, err := _decodeURI(call.Argument(0).string(), false)
+	if err {
+		panic(call.runtime.panicURIError("URI malformed"))
+	}
+	return toValue_string(output)
+}
+
+// escape/unescape
+
+func builtin_shouldEscape(chr byte) bool {
+	if 'A' <= chr && chr <= 'Z' || 'a' <= chr && chr <= 'z' || '0' <= chr && chr <= '9' {
+		return false
+	}
+	return !strings.ContainsRune("*_+-./", rune(chr))
+}
+
+const escapeBase16 = "0123456789ABCDEF"
+
+func builtin_escape(input string) string {
+	output := make([]byte, 0, len(input))
+	length := len(input)
+	for index := 0; index < length; {
+		if builtin_shouldEscape(input[index]) {
+			chr, width := utf8.DecodeRuneInString(input[index:])
+			chr16 := utf16.Encode([]rune{chr})[0]
+			if 256 > chr16 {
+				output = append(output, '%',
+					escapeBase16[chr16>>4],
+					escapeBase16[chr16&15],
+				)
+			} else {
+				output = append(output, '%', 'u',
+					escapeBase16[chr16>>12],
+					escapeBase16[(chr16>>8)&15],
+					escapeBase16[(chr16>>4)&15],
+					escapeBase16[chr16&15],
+				)
+			}
+			index += width
+
+		} else {
+			output = append(output, input[index])
+			index += 1
+		}
+	}
+	return string(output)
+}
+
+func builtin_unescape(input string) string {
+	output := make([]rune, 0, len(input))
+	length := len(input)
+	for index := 0; index < length; {
+		if input[index] == '%' {
+			if index <= length-6 && input[index+1] == 'u' {
+				byte16, err := hex.DecodeString(input[index+2 : index+6])
+				if err == nil {
+					value := uint16(byte16[0])<<8 + uint16(byte16[1])
+					chr := utf16.Decode([]uint16{value})[0]
+					output = append(output, chr)
+					index += 6
+					continue
+				}
+			}
+			if index <= length-3 {
+				byte8, err := hex.DecodeString(input[index+1 : index+3])
+				if err == nil {
+					value := uint16(byte8[0])
+					chr := utf16.Decode([]uint16{value})[0]
+					output = append(output, chr)
+					index += 3
+					continue
+				}
+			}
+		}
+		output = append(output, rune(input[index]))
+		index += 1
+	}
+	return string(output)
+}
+
+func builtinGlobal_escape(call FunctionCall) Value {
+	return toValue_string(builtin_escape(call.Argument(0).string()))
+}
+
+func builtinGlobal_unescape(call FunctionCall) Value {
+	return toValue_string(builtin_unescape(call.Argument(0).string()))
+}

vendor/github.com/robertkrimen/otto/builtin_array.go

@@ -0,0 +1,684 @@
+package otto
+
+import (
+	"strconv"
+	"strings"
+)
+
+// Array
+
+func builtinArray(call FunctionCall) Value {
+	return toValue_object(builtinNewArrayNative(call.runtime, call.ArgumentList))
+}
+
+func builtinNewArray(self *_object, argumentList []Value) Value {
+	return toValue_object(builtinNewArrayNative(self.runtime, argumentList))
+}
+
+func builtinNewArrayNative(runtime *_runtime, argumentList []Value) *_object {
+	if len(argumentList) == 1 {
+		firstArgument := argumentList[0]
+		if firstArgument.IsNumber() {
+			return runtime.newArray(arrayUint32(runtime, firstArgument))
+		}
+	}
+	return runtime.newArrayOf(argumentList)
+}
+
+func builtinArray_toString(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	join := thisObject.get("join")
+	if join.isCallable() {
+		join := join._object()
+		return join.call(call.This, call.ArgumentList, false, nativeFrame)
+	}
+	return builtinObject_toString(call)
+}
+
+func builtinArray_toLocaleString(call FunctionCall) Value {
+	separator := ","
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	if length == 0 {
+		return toValue_string("")
+	}
+	stringList := make([]string, 0, length)
+	for index := int64(0); index < length; index += 1 {
+		value := thisObject.get(arrayIndexToString(index))
+		stringValue := ""
+		switch value.kind {
+		case valueEmpty, valueUndefined, valueNull:
+		default:
+			object := call.runtime.toObject(value)
+			toLocaleString := object.get("toLocaleString")
+			if !toLocaleString.isCallable() {
+				panic(call.runtime.panicTypeError())
+			}
+			stringValue = toLocaleString.call(call.runtime, toValue_object(object)).string()
+		}
+		stringList = append(stringList, stringValue)
+	}
+	return toValue_string(strings.Join(stringList, separator))
+}
+
+func builtinArray_concat(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	valueArray := []Value{}
+	source := append([]Value{toValue_object(thisObject)}, call.ArgumentList...)
+	for _, item := range source {
+		switch item.kind {
+		case valueObject:
+			object := item._object()
+			if isArray(object) {
+				length := object.get(propertyLength).number().int64
+				for index := int64(0); index < length; index += 1 {
+					name := strconv.FormatInt(index, 10)
+					if object.hasProperty(name) {
+						valueArray = append(valueArray, object.get(name))
+					} else {
+						valueArray = append(valueArray, Value{})
+					}
+				}
+				continue
+			}
+			fallthrough
+		default:
+			valueArray = append(valueArray, item)
+		}
+	}
+	return toValue_object(call.runtime.newArrayOf(valueArray))
+}
+
+func builtinArray_shift(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	if 0 == length {
+		thisObject.put(propertyLength, toValue_int64(0), true)
+		return Value{}
+	}
+	first := thisObject.get("0")
+	for index := int64(1); index < length; index++ {
+		from := arrayIndexToString(index)
+		to := arrayIndexToString(index - 1)
+		if thisObject.hasProperty(from) {
+			thisObject.put(to, thisObject.get(from), true)
+		} else {
+			thisObject.delete(to, true)
+		}
+	}
+	thisObject.delete(arrayIndexToString(length-1), true)
+	thisObject.put(propertyLength, toValue_int64(length-1), true)
+	return first
+}
+
+func builtinArray_push(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	itemList := call.ArgumentList
+	index := int64(toUint32(thisObject.get(propertyLength)))
+	for len(itemList) > 0 {
+		thisObject.put(arrayIndexToString(index), itemList[0], true)
+		itemList = itemList[1:]
+		index += 1
+	}
+	length := toValue_int64(index)
+	thisObject.put(propertyLength, length, true)
+	return length
+}
+
+func builtinArray_pop(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	if 0 == length {
+		thisObject.put(propertyLength, toValue_uint32(0), true)
+		return Value{}
+	}
+	last := thisObject.get(arrayIndexToString(length - 1))
+	thisObject.delete(arrayIndexToString(length-1), true)
+	thisObject.put(propertyLength, toValue_int64(length-1), true)
+	return last
+}
+
+func builtinArray_join(call FunctionCall) Value {
+	separator := ","
+	{
+		argument := call.Argument(0)
+		if argument.IsDefined() {
+			separator = argument.string()
+		}
+	}
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	if length == 0 {
+		return toValue_string("")
+	}
+	stringList := make([]string, 0, length)
+	for index := int64(0); index < length; index += 1 {
+		value := thisObject.get(arrayIndexToString(index))
+		stringValue := ""
+		switch value.kind {
+		case valueEmpty, valueUndefined, valueNull:
+		default:
+			stringValue = value.string()
+		}
+		stringList = append(stringList, stringValue)
+	}
+	return toValue_string(strings.Join(stringList, separator))
+}
+
+func builtinArray_splice(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+
+	start := valueToRangeIndex(call.Argument(0), length, false)
+	deleteCount := length - start
+	if arg, ok := call.getArgument(1); ok {
+		deleteCount = valueToRangeIndex(arg, length-start, true)
+	}
+	valueArray := make([]Value, deleteCount)
+
+	for index := int64(0); index < deleteCount; index++ {
+		indexString := arrayIndexToString(int64(start + index))
+		if thisObject.hasProperty(indexString) {
+			valueArray[index] = thisObject.get(indexString)
+		}
+	}
+
+	// 0, <1, 2, 3, 4>, 5, 6, 7
+	// a, b
+	// length 8 - delete 4 @ start 1
+
+	itemList := []Value{}
+	itemCount := int64(len(call.ArgumentList))
+	if itemCount > 2 {
+		itemCount -= 2 // Less the first two arguments
+		itemList = call.ArgumentList[2:]
+	} else {
+		itemCount = 0
+	}
+	if itemCount < deleteCount {
+		// The Object/Array is shrinking
+		stop := int64(length) - deleteCount
+		// The new length of the Object/Array before
+		// appending the itemList remainder
+		// Stopping at the lower bound of the insertion:
+		// Move an item from the after the deleted portion
+		// to a position after the inserted portion
+		for index := start; index < stop; index++ {
+			from := arrayIndexToString(index + deleteCount) // Position just after deletion
+			to := arrayIndexToString(index + itemCount)     // Position just after splice (insertion)
+			if thisObject.hasProperty(from) {
+				thisObject.put(to, thisObject.get(from), true)
+			} else {
+				thisObject.delete(to, true)
+			}
+		}
+		// Delete off the end
+		// We don't bother to delete below <stop + itemCount> (if any) since those
+		// will be overwritten anyway
+		for index := int64(length); index > (stop + itemCount); index-- {
+			thisObject.delete(arrayIndexToString(index-1), true)
+		}
+	} else if itemCount > deleteCount {
+		// The Object/Array is growing
+		// The itemCount is greater than the deleteCount, so we do
+		// not have to worry about overwriting what we should be moving
+		// ---
+		// Starting from the upper bound of the deletion:
+		// Move an item from the after the deleted portion
+		// to a position after the inserted portion
+		for index := int64(length) - deleteCount; index > start; index-- {
+			from := arrayIndexToString(index + deleteCount - 1)
+			to := arrayIndexToString(index + itemCount - 1)
+			if thisObject.hasProperty(from) {
+				thisObject.put(to, thisObject.get(from), true)
+			} else {
+				thisObject.delete(to, true)
+			}
+		}
+	}
+
+	for index := int64(0); index < itemCount; index++ {
+		thisObject.put(arrayIndexToString(index+start), itemList[index], true)
+	}
+	thisObject.put(propertyLength, toValue_int64(int64(length)+itemCount-deleteCount), true)
+
+	return toValue_object(call.runtime.newArrayOf(valueArray))
+}
+
+func builtinArray_slice(call FunctionCall) Value {
+	thisObject := call.thisObject()
+
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	start, end := rangeStartEnd(call.ArgumentList, length, false)
+
+	if start >= end {
+		// Always an empty array
+		return toValue_object(call.runtime.newArray(0))
+	}
+	sliceLength := end - start
+	sliceValueArray := make([]Value, sliceLength)
+
+	for index := int64(0); index < sliceLength; index++ {
+		from := arrayIndexToString(index + start)
+		if thisObject.hasProperty(from) {
+			sliceValueArray[index] = thisObject.get(from)
+		}
+	}
+
+	return toValue_object(call.runtime.newArrayOf(sliceValueArray))
+}
+
+func builtinArray_unshift(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	itemList := call.ArgumentList
+	itemCount := int64(len(itemList))
+
+	for index := length; index > 0; index-- {
+		from := arrayIndexToString(index - 1)
+		to := arrayIndexToString(index + itemCount - 1)
+		if thisObject.hasProperty(from) {
+			thisObject.put(to, thisObject.get(from), true)
+		} else {
+			thisObject.delete(to, true)
+		}
+	}
+
+	for index := int64(0); index < itemCount; index++ {
+		thisObject.put(arrayIndexToString(index), itemList[index], true)
+	}
+
+	newLength := toValue_int64(length + itemCount)
+	thisObject.put(propertyLength, newLength, true)
+	return newLength
+}
+
+func builtinArray_reverse(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := int64(toUint32(thisObject.get(propertyLength)))
+
+	lower := struct {
+		name   string
+		index  int64
+		exists bool
+	}{}
+	upper := lower
+
+	lower.index = 0
+	middle := length / 2 // Division will floor
+
+	for lower.index != middle {
+		lower.name = arrayIndexToString(lower.index)
+		upper.index = length - lower.index - 1
+		upper.name = arrayIndexToString(upper.index)
+
+		lower.exists = thisObject.hasProperty(lower.name)
+		upper.exists = thisObject.hasProperty(upper.name)
+
+		if lower.exists && upper.exists {
+			lowerValue := thisObject.get(lower.name)
+			upperValue := thisObject.get(upper.name)
+			thisObject.put(lower.name, upperValue, true)
+			thisObject.put(upper.name, lowerValue, true)
+		} else if !lower.exists && upper.exists {
+			value := thisObject.get(upper.name)
+			thisObject.delete(upper.name, true)
+			thisObject.put(lower.name, value, true)
+		} else if lower.exists && !upper.exists {
+			value := thisObject.get(lower.name)
+			thisObject.delete(lower.name, true)
+			thisObject.put(upper.name, value, true)
+		} else {
+			// Nothing happens.
+		}
+
+		lower.index += 1
+	}
+
+	return call.This
+}
+
+func sortCompare(thisObject *_object, index0, index1 uint, compare *_object) int {
+	j := struct {
+		name    string
+		exists  bool
+		defined bool
+		value   string
+	}{}
+	k := j
+	j.name = arrayIndexToString(int64(index0))
+	j.exists = thisObject.hasProperty(j.name)
+	k.name = arrayIndexToString(int64(index1))
+	k.exists = thisObject.hasProperty(k.name)
+
+	if !j.exists && !k.exists {
+		return 0
+	} else if !j.exists {
+		return 1
+	} else if !k.exists {
+		return -1
+	}
+
+	x := thisObject.get(j.name)
+	y := thisObject.get(k.name)
+	j.defined = x.IsDefined()
+	k.defined = y.IsDefined()
+
+	if !j.defined && !k.defined {
+		return 0
+	} else if !j.defined {
+		return 1
+	} else if !k.defined {
+		return -1
+	}
+
+	if compare == nil {
+		j.value = x.string()
+		k.value = y.string()
+
+		if j.value == k.value {
+			return 0
+		} else if j.value < k.value {
+			return -1
+		}
+
+		return 1
+	}
+
+	return toIntSign(compare.call(Value{}, []Value{x, y}, false, nativeFrame))
+}
+
+func arraySortSwap(thisObject *_object, index0, index1 uint) {
+
+	j := struct {
+		name   string
+		exists bool
+	}{}
+	k := j
+
+	j.name = arrayIndexToString(int64(index0))
+	j.exists = thisObject.hasProperty(j.name)
+	k.name = arrayIndexToString(int64(index1))
+	k.exists = thisObject.hasProperty(k.name)
+
+	if j.exists && k.exists {
+		jValue := thisObject.get(j.name)
+		kValue := thisObject.get(k.name)
+		thisObject.put(j.name, kValue, true)
+		thisObject.put(k.name, jValue, true)
+	} else if !j.exists && k.exists {
+		value := thisObject.get(k.name)
+		thisObject.delete(k.name, true)
+		thisObject.put(j.name, value, true)
+	} else if j.exists && !k.exists {
+		value := thisObject.get(j.name)
+		thisObject.delete(j.name, true)
+		thisObject.put(k.name, value, true)
+	} else {
+		// Nothing happens.
+	}
+}
+
+func arraySortQuickPartition(thisObject *_object, left, right, pivot uint, compare *_object) (uint, uint) {
+	arraySortSwap(thisObject, pivot, right) // Right is now the pivot value
+	cursor := left
+	cursor2 := left
+	for index := left; index < right; index++ {
+		comparison := sortCompare(thisObject, index, right, compare) // Compare to the pivot value
+		if comparison < 0 {
+			arraySortSwap(thisObject, index, cursor)
+			if cursor < cursor2 {
+				arraySortSwap(thisObject, index, cursor2)
+			}
+			cursor += 1
+			cursor2 += 1
+		} else if comparison == 0 {
+			arraySortSwap(thisObject, index, cursor2)
+			cursor2 += 1
+		}
+	}
+	arraySortSwap(thisObject, cursor2, right)
+	return cursor, cursor2
+}
+
+func arraySortQuickSort(thisObject *_object, left, right uint, compare *_object) {
+	if left < right {
+		middle := left + (right-left)/2
+		pivot, pivot2 := arraySortQuickPartition(thisObject, left, right, middle, compare)
+		if pivot > 0 {
+			arraySortQuickSort(thisObject, left, pivot-1, compare)
+		}
+		arraySortQuickSort(thisObject, pivot2+1, right, compare)
+	}
+}
+
+func builtinArray_sort(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	length := uint(toUint32(thisObject.get(propertyLength)))
+	compareValue := call.Argument(0)
+	compare := compareValue._object()
+	if compareValue.IsUndefined() {
+	} else if !compareValue.isCallable() {
+		panic(call.runtime.panicTypeError())
+	}
+	if length > 1 {
+		arraySortQuickSort(thisObject, 0, length-1, compare)
+	}
+	return call.This
+}
+
+func builtinArray_isArray(call FunctionCall) Value {
+	return toValue_bool(isArray(call.Argument(0)._object()))
+}
+
+func builtinArray_indexOf(call FunctionCall) Value {
+	thisObject, matchValue := call.thisObject(), call.Argument(0)
+	if length := int64(toUint32(thisObject.get(propertyLength))); length > 0 {
+		index := int64(0)
+		if len(call.ArgumentList) > 1 {
+			index = call.Argument(1).number().int64
+		}
+		if index < 0 {
+			if index += length; index < 0 {
+				index = 0
+			}
+		} else if index >= length {
+			index = -1
+		}
+		for ; index >= 0 && index < length; index++ {
+			name := arrayIndexToString(int64(index))
+			if !thisObject.hasProperty(name) {
+				continue
+			}
+			value := thisObject.get(name)
+			if strictEqualityComparison(matchValue, value) {
+				return toValue_uint32(uint32(index))
+			}
+		}
+	}
+	return toValue_int(-1)
+}
+
+func builtinArray_lastIndexOf(call FunctionCall) Value {
+	thisObject, matchValue := call.thisObject(), call.Argument(0)
+	length := int64(toUint32(thisObject.get(propertyLength)))
+	index := length - 1
+	if len(call.ArgumentList) > 1 {
+		index = call.Argument(1).number().int64
+	}
+	if 0 > index {
+		index += length
+	}
+	if index > length {
+		index = length - 1
+	} else if 0 > index {
+		return toValue_int(-1)
+	}
+	for ; index >= 0; index-- {
+		name := arrayIndexToString(int64(index))
+		if !thisObject.hasProperty(name) {
+			continue
+		}
+		value := thisObject.get(name)
+		if strictEqualityComparison(matchValue, value) {
+			return toValue_uint32(uint32(index))
+		}
+	}
+	return toValue_int(-1)
+}
+
+func builtinArray_every(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		callThis := call.Argument(1)
+		for index := int64(0); index < length; index++ {
+			if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+				if value := thisObject.get(key); iterator.call(call.runtime, callThis, value, toValue_int64(index), this).bool() {
+					continue
+				}
+				return falseValue
+			}
+		}
+		return trueValue
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_some(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		callThis := call.Argument(1)
+		for index := int64(0); index < length; index++ {
+			if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+				if value := thisObject.get(key); iterator.call(call.runtime, callThis, value, toValue_int64(index), this).bool() {
+					return trueValue
+				}
+			}
+		}
+		return falseValue
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_forEach(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		callThis := call.Argument(1)
+		for index := int64(0); index < length; index++ {
+			if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+				iterator.call(call.runtime, callThis, thisObject.get(key), toValue_int64(index), this)
+			}
+		}
+		return Value{}
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_map(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		callThis := call.Argument(1)
+		values := make([]Value, length)
+		for index := int64(0); index < length; index++ {
+			if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+				values[index] = iterator.call(call.runtime, callThis, thisObject.get(key), index, this)
+			} else {
+				values[index] = Value{}
+			}
+		}
+		return toValue_object(call.runtime.newArrayOf(values))
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_filter(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		callThis := call.Argument(1)
+		values := make([]Value, 0)
+		for index := int64(0); index < length; index++ {
+			if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+				value := thisObject.get(key)
+				if iterator.call(call.runtime, callThis, value, index, this).bool() {
+					values = append(values, value)
+				}
+			}
+		}
+		return toValue_object(call.runtime.newArrayOf(values))
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_reduce(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		initial := len(call.ArgumentList) > 1
+		start := call.Argument(1)
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		index := int64(0)
+		if length > 0 || initial {
+			var accumulator Value
+			if !initial {
+				for ; index < length; index++ {
+					if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+						accumulator = thisObject.get(key)
+						index++
+						break
+					}
+				}
+			} else {
+				accumulator = start
+			}
+			for ; index < length; index++ {
+				if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+					accumulator = iterator.call(call.runtime, Value{}, accumulator, thisObject.get(key), key, this)
+				}
+			}
+			return accumulator
+		}
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinArray_reduceRight(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	this := toValue_object(thisObject)
+	if iterator := call.Argument(0); iterator.isCallable() {
+		initial := len(call.ArgumentList) > 1
+		start := call.Argument(1)
+		length := int64(toUint32(thisObject.get(propertyLength)))
+		if length > 0 || initial {
+			index := length - 1
+			var accumulator Value
+			if !initial {
+				for ; index >= 0; index-- {
+					if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+						accumulator = thisObject.get(key)
+						index--
+						break
+					}
+				}
+			} else {
+				accumulator = start
+			}
+			for ; index >= 0; index-- {
+				if key := arrayIndexToString(index); thisObject.hasProperty(key) {
+					accumulator = iterator.call(call.runtime, Value{}, accumulator, thisObject.get(key), key, this)
+				}
+			}
+			return accumulator
+		}
+	}
+	panic(call.runtime.panicTypeError())
+}

vendor/github.com/robertkrimen/otto/builtin_boolean.go

@@ -0,0 +1,28 @@
+package otto
+
+// Boolean
+
+func builtinBoolean(call FunctionCall) Value {
+	return toValue_bool(call.Argument(0).bool())
+}
+
+func builtinNewBoolean(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newBoolean(valueOfArrayIndex(argumentList, 0)))
+}
+
+func builtinBoolean_toString(call FunctionCall) Value {
+	value := call.This
+	if !value.IsBoolean() {
+		// Will throw a TypeError if ThisObject is not a Boolean
+		value = call.thisClassObject(classBoolean).primitiveValue()
+	}
+	return toValue_string(value.string())
+}
+
+func builtinBoolean_valueOf(call FunctionCall) Value {
+	value := call.This
+	if !value.IsBoolean() {
+		value = call.thisClassObject(classBoolean).primitiveValue()
+	}
+	return value
+}

vendor/github.com/robertkrimen/otto/builtin_date.go

@@ -0,0 +1,615 @@
+package otto
+
+import (
+	"math"
+	Time "time"
+)
+
+// Date
+
+const (
+	// TODO Be like V8?
+	// builtinDate_goDateTimeLayout = "Mon Jan 2 2006 15:04:05 GMT-0700 (MST)"
+	builtinDate_goDateTimeLayout = Time.RFC1123 // "Mon, 02 Jan 2006 15:04:05 MST"
+	builtinDate_goDateLayout     = "Mon, 02 Jan 2006"
+	builtinDate_goTimeLayout     = "15:04:05 MST"
+)
+
+func builtinDate(call FunctionCall) Value {
+	date := &_dateObject{}
+	date.Set(newDateTime([]Value{}, Time.Local))
+	return toValue_string(date.Time().Format(builtinDate_goDateTimeLayout))
+}
+
+func builtinNewDate(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newDate(newDateTime(argumentList, Time.Local)))
+}
+
+func builtinDate_toString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format(builtinDate_goDateTimeLayout))
+}
+
+func builtinDate_toDateString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format(builtinDate_goDateLayout))
+}
+
+func builtinDate_toTimeString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format(builtinDate_goTimeLayout))
+}
+
+func builtinDate_toUTCString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Format(builtinDate_goDateTimeLayout))
+}
+
+func builtinDate_toISOString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Format("2006-01-02T15:04:05.000Z"))
+}
+
+func builtinDate_toJSON(call FunctionCall) Value {
+	object := call.thisObject()
+	value := object.DefaultValue(defaultValueHintNumber) // FIXME object.primitiveNumberValue
+	{                                                    // FIXME value.isFinite
+		value := value.float64()
+		if math.IsNaN(value) || math.IsInf(value, 0) {
+			return nullValue
+		}
+	}
+	toISOString := object.get("toISOString")
+	if !toISOString.isCallable() {
+		// FIXME
+		panic(call.runtime.panicTypeError())
+	}
+	return toISOString.call(call.runtime, toValue_object(object), []Value{})
+}
+
+func builtinDate_toGMTString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Format("Mon, 02 Jan 2006 15:04:05 GMT"))
+}
+
+func builtinDate_getTime(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	// We do this (convert away from a float) so the user
+	// does not get something back in exponential notation
+	return toValue_int64(int64(date.Epoch()))
+}
+
+func builtinDate_setTime(call FunctionCall) Value {
+	object := call.thisObject()
+	date := dateObjectOf(call.runtime, call.thisObject())
+	date.Set(call.Argument(0).float64())
+	object.value = date
+	return date.Value()
+}
+
+func _builtinDate_beforeSet(call FunctionCall, argumentLimit int, timeLocal bool) (*_object, *_dateObject, *_ecmaTime, []int) {
+	object := call.thisObject()
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return nil, nil, nil, nil
+	}
+
+	if argumentLimit > len(call.ArgumentList) {
+		argumentLimit = len(call.ArgumentList)
+	}
+
+	if argumentLimit == 0 {
+		object.value = invalidDateObject
+		return nil, nil, nil, nil
+	}
+
+	valueList := make([]int, argumentLimit)
+	for index := 0; index < argumentLimit; index++ {
+		value := call.ArgumentList[index]
+		nm := value.number()
+		switch nm.kind {
+		case numberInteger, numberFloat:
+		default:
+			object.value = invalidDateObject
+			return nil, nil, nil, nil
+		}
+		valueList[index] = int(nm.int64)
+	}
+	baseTime := date.Time()
+	if timeLocal {
+		baseTime = baseTime.Local()
+	}
+	ecmaTime := ecmaTime(baseTime)
+	return object, &date, &ecmaTime, valueList
+}
+
+func builtinDate_parse(call FunctionCall) Value {
+	date := call.Argument(0).string()
+	return toValue_float64(dateParse(date))
+}
+
+func builtinDate_UTC(call FunctionCall) Value {
+	return toValue_float64(newDateTime(call.ArgumentList, Time.UTC))
+}
+
+func builtinDate_now(call FunctionCall) Value {
+	call.ArgumentList = []Value(nil)
+	return builtinDate_UTC(call)
+}
+
+// This is a placeholder
+func builtinDate_toLocaleString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format("2006-01-02 15:04:05"))
+}
+
+// This is a placeholder
+func builtinDate_toLocaleDateString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format("2006-01-02"))
+}
+
+// This is a placeholder
+func builtinDate_toLocaleTimeString(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return toValue_string("Invalid Date")
+	}
+	return toValue_string(date.Time().Local().Format("15:04:05"))
+}
+
+func builtinDate_valueOf(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return date.Value()
+}
+
+func builtinDate_getYear(call FunctionCall) Value {
+	// Will throw a TypeError is ThisObject is nil or
+	// does not have Class of "Date"
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Year() - 1900)
+}
+
+func builtinDate_getFullYear(call FunctionCall) Value {
+	// Will throw a TypeError is ThisObject is nil or
+	// does not have Class of "Date"
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Year())
+}
+
+func builtinDate_getUTCFullYear(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Year())
+}
+
+func builtinDate_getMonth(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(dateFromGoMonth(date.Time().Local().Month()))
+}
+
+func builtinDate_getUTCMonth(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(dateFromGoMonth(date.Time().Month()))
+}
+
+func builtinDate_getDate(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Day())
+}
+
+func builtinDate_getUTCDate(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Day())
+}
+
+func builtinDate_getDay(call FunctionCall) Value {
+	// Actually day of the week
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(dateFromGoDay(date.Time().Local().Weekday()))
+}
+
+func builtinDate_getUTCDay(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(dateFromGoDay(date.Time().Weekday()))
+}
+
+func builtinDate_getHours(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Hour())
+}
+
+func builtinDate_getUTCHours(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Hour())
+}
+
+func builtinDate_getMinutes(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Minute())
+}
+
+func builtinDate_getUTCMinutes(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Minute())
+}
+
+func builtinDate_getSeconds(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Second())
+}
+
+func builtinDate_getUTCSeconds(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Second())
+}
+
+func builtinDate_getMilliseconds(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Local().Nanosecond() / (100 * 100 * 100))
+}
+
+func builtinDate_getUTCMilliseconds(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	return toValue_int(date.Time().Nanosecond() / (100 * 100 * 100))
+}
+
+func builtinDate_getTimezoneOffset(call FunctionCall) Value {
+	date := dateObjectOf(call.runtime, call.thisObject())
+	if date.isNaN {
+		return NaNValue()
+	}
+	timeLocal := date.Time().Local()
+	// Is this kosher?
+	timeLocalAsUTC := Time.Date(
+		timeLocal.Year(),
+		timeLocal.Month(),
+		timeLocal.Day(),
+		timeLocal.Hour(),
+		timeLocal.Minute(),
+		timeLocal.Second(),
+		timeLocal.Nanosecond(),
+		Time.UTC,
+	)
+	return toValue_float64(date.Time().Sub(timeLocalAsUTC).Seconds() / 60)
+}
+
+func builtinDate_setMilliseconds(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 1, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	ecmaTime.millisecond = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCMilliseconds(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 1, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	ecmaTime.millisecond = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setSeconds(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 2, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 1 {
+		ecmaTime.millisecond = value[1]
+	}
+	ecmaTime.second = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCSeconds(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 2, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 1 {
+		ecmaTime.millisecond = value[1]
+	}
+	ecmaTime.second = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setMinutes(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 3, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 2 {
+		ecmaTime.millisecond = value[2]
+		ecmaTime.second = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.second = value[1]
+	}
+	ecmaTime.minute = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCMinutes(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 3, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 2 {
+		ecmaTime.millisecond = value[2]
+		ecmaTime.second = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.second = value[1]
+	}
+	ecmaTime.minute = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setHours(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 4, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 3 {
+		ecmaTime.millisecond = value[3]
+		ecmaTime.second = value[2]
+		ecmaTime.minute = value[1]
+	} else if len(value) > 2 {
+		ecmaTime.second = value[2]
+		ecmaTime.minute = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.minute = value[1]
+	}
+	ecmaTime.hour = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCHours(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 4, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 3 {
+		ecmaTime.millisecond = value[3]
+		ecmaTime.second = value[2]
+		ecmaTime.minute = value[1]
+	} else if len(value) > 2 {
+		ecmaTime.second = value[2]
+		ecmaTime.minute = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.minute = value[1]
+	}
+	ecmaTime.hour = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setDate(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 1, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	ecmaTime.day = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCDate(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 1, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	ecmaTime.day = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setMonth(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 2, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 1 {
+		ecmaTime.day = value[1]
+	}
+	ecmaTime.month = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCMonth(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 2, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 1 {
+		ecmaTime.day = value[1]
+	}
+	ecmaTime.month = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setYear(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 1, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	year := value[0]
+	if 0 <= year && year <= 99 {
+		year += 1900
+	}
+	ecmaTime.year = year
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setFullYear(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 3, true)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 2 {
+		ecmaTime.day = value[2]
+		ecmaTime.month = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.month = value[1]
+	}
+	ecmaTime.year = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+func builtinDate_setUTCFullYear(call FunctionCall) Value {
+	object, date, ecmaTime, value := _builtinDate_beforeSet(call, 3, false)
+	if ecmaTime == nil {
+		return NaNValue()
+	}
+
+	if len(value) > 2 {
+		ecmaTime.day = value[2]
+		ecmaTime.month = value[1]
+	} else if len(value) > 1 {
+		ecmaTime.month = value[1]
+	}
+	ecmaTime.year = value[0]
+
+	date.SetTime(ecmaTime.goTime())
+	object.value = *date
+	return date.Value()
+}
+
+// toUTCString
+// toISOString
+// toJSONString
+// toJSON

vendor/github.com/robertkrimen/otto/builtin_error.go

@@ -0,0 +1,126 @@
+package otto
+
+import (
+	"fmt"
+)
+
+func builtinError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newError(classError, call.Argument(0), 1))
+}
+
+func builtinNewError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newError(classError, valueOfArrayIndex(argumentList, 0), 0))
+}
+
+func builtinError_toString(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	if thisObject == nil {
+		panic(call.runtime.panicTypeError())
+	}
+
+	name := classError
+	nameValue := thisObject.get("name")
+	if nameValue.IsDefined() {
+		name = nameValue.string()
+	}
+
+	message := ""
+	messageValue := thisObject.get("message")
+	if messageValue.IsDefined() {
+		message = messageValue.string()
+	}
+
+	if len(name) == 0 {
+		return toValue_string(message)
+	}
+
+	if len(message) == 0 {
+		return toValue_string(name)
+	}
+
+	return toValue_string(fmt.Sprintf("%s: %s", name, message))
+}
+
+func (runtime *_runtime) newEvalError(message Value) *_object {
+	self := runtime.newErrorObject("EvalError", message, 0)
+	self.prototype = runtime.global.EvalErrorPrototype
+	return self
+}
+
+func builtinEvalError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newEvalError(call.Argument(0)))
+}
+
+func builtinNewEvalError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newEvalError(valueOfArrayIndex(argumentList, 0)))
+}
+
+func (runtime *_runtime) newTypeError(message Value) *_object {
+	self := runtime.newErrorObject("TypeError", message, 0)
+	self.prototype = runtime.global.TypeErrorPrototype
+	return self
+}
+
+func builtinTypeError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newTypeError(call.Argument(0)))
+}
+
+func builtinNewTypeError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newTypeError(valueOfArrayIndex(argumentList, 0)))
+}
+
+func (runtime *_runtime) newRangeError(message Value) *_object {
+	self := runtime.newErrorObject("RangeError", message, 0)
+	self.prototype = runtime.global.RangeErrorPrototype
+	return self
+}
+
+func builtinRangeError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newRangeError(call.Argument(0)))
+}
+
+func builtinNewRangeError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newRangeError(valueOfArrayIndex(argumentList, 0)))
+}
+
+func (runtime *_runtime) newURIError(message Value) *_object {
+	self := runtime.newErrorObject("URIError", message, 0)
+	self.prototype = runtime.global.URIErrorPrototype
+	return self
+}
+
+func (runtime *_runtime) newReferenceError(message Value) *_object {
+	self := runtime.newErrorObject("ReferenceError", message, 0)
+	self.prototype = runtime.global.ReferenceErrorPrototype
+	return self
+}
+
+func builtinReferenceError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newReferenceError(call.Argument(0)))
+}
+
+func builtinNewReferenceError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newReferenceError(valueOfArrayIndex(argumentList, 0)))
+}
+
+func (runtime *_runtime) newSyntaxError(message Value) *_object {
+	self := runtime.newErrorObject("SyntaxError", message, 0)
+	self.prototype = runtime.global.SyntaxErrorPrototype
+	return self
+}
+
+func builtinSyntaxError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newSyntaxError(call.Argument(0)))
+}
+
+func builtinNewSyntaxError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newSyntaxError(valueOfArrayIndex(argumentList, 0)))
+}
+
+func builtinURIError(call FunctionCall) Value {
+	return toValue_object(call.runtime.newURIError(call.Argument(0)))
+}
+
+func builtinNewURIError(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newURIError(valueOfArrayIndex(argumentList, 0)))
+}

vendor/github.com/robertkrimen/otto/builtin_function.go

@@ -0,0 +1,126 @@
+package otto
+
+import (
+	"fmt"
+	"strings"
+	"unicode"
+
+	"github.com/robertkrimen/otto/parser"
+)
+
+// Function
+
+func builtinFunction(call FunctionCall) Value {
+	return toValue_object(builtinNewFunctionNative(call.runtime, call.ArgumentList))
+}
+
+func builtinNewFunction(self *_object, argumentList []Value) Value {
+	return toValue_object(builtinNewFunctionNative(self.runtime, argumentList))
+}
+
+func argumentList2parameterList(argumentList []Value) []string {
+	parameterList := make([]string, 0, len(argumentList))
+	for _, value := range argumentList {
+		tmp := strings.FieldsFunc(value.string(), func(chr rune) bool {
+			return chr == ',' || unicode.IsSpace(chr)
+		})
+		parameterList = append(parameterList, tmp...)
+	}
+	return parameterList
+}
+
+func builtinNewFunctionNative(runtime *_runtime, argumentList []Value) *_object {
+	var parameterList, body string
+	count := len(argumentList)
+	if count > 0 {
+		tmp := make([]string, 0, count-1)
+		for _, value := range argumentList[0 : count-1] {
+			tmp = append(tmp, value.string())
+		}
+		parameterList = strings.Join(tmp, ",")
+		body = argumentList[count-1].string()
+	}
+
+	// FIXME
+	function, err := parser.ParseFunction(parameterList, body)
+	runtime.parseThrow(err) // Will panic/throw appropriately
+	cmpl := _compiler{}
+	cmpl_function := cmpl.parseExpression(function)
+
+	return runtime.newNodeFunction(cmpl_function.(*_nodeFunctionLiteral), runtime.globalStash)
+}
+
+func builtinFunction_toString(call FunctionCall) Value {
+	object := call.thisClassObject(classFunction) // Should throw a TypeError unless Function
+	switch fn := object.value.(type) {
+	case _nativeFunctionObject:
+		return toValue_string(fmt.Sprintf("function %s() { [native code] }", fn.name))
+	case _nodeFunctionObject:
+		return toValue_string(fn.node.source)
+	case _bindFunctionObject:
+		return toValue_string("function () { [native code] }")
+	}
+
+	panic(call.runtime.panicTypeError("Function.toString()"))
+}
+
+func builtinFunction_apply(call FunctionCall) Value {
+	if !call.This.isCallable() {
+		panic(call.runtime.panicTypeError())
+	}
+	this := call.Argument(0)
+	if this.IsUndefined() {
+		// FIXME Not ECMA5
+		this = toValue_object(call.runtime.globalObject)
+	}
+	argumentList := call.Argument(1)
+	switch argumentList.kind {
+	case valueUndefined, valueNull:
+		return call.thisObject().call(this, nil, false, nativeFrame)
+	case valueObject:
+	default:
+		panic(call.runtime.panicTypeError())
+	}
+
+	arrayObject := argumentList._object()
+	thisObject := call.thisObject()
+	length := int64(toUint32(arrayObject.get(propertyLength)))
+	valueArray := make([]Value, length)
+	for index := int64(0); index < length; index++ {
+		valueArray[index] = arrayObject.get(arrayIndexToString(index))
+	}
+	return thisObject.call(this, valueArray, false, nativeFrame)
+}
+
+func builtinFunction_call(call FunctionCall) Value {
+	if !call.This.isCallable() {
+		panic(call.runtime.panicTypeError())
+	}
+	thisObject := call.thisObject()
+	this := call.Argument(0)
+	if this.IsUndefined() {
+		// FIXME Not ECMA5
+		this = toValue_object(call.runtime.globalObject)
+	}
+	if len(call.ArgumentList) >= 1 {
+		return thisObject.call(this, call.ArgumentList[1:], false, nativeFrame)
+	}
+	return thisObject.call(this, nil, false, nativeFrame)
+}
+
+func builtinFunction_bind(call FunctionCall) Value {
+	target := call.This
+	if !target.isCallable() {
+		panic(call.runtime.panicTypeError())
+	}
+	targetObject := target._object()
+
+	this := call.Argument(0)
+	argumentList := call.slice(1)
+	if this.IsUndefined() {
+		// FIXME Do this elsewhere?
+		this = toValue_object(call.runtime.globalObject)
+	}
+
+	return toValue_object(call.runtime.newBoundFunction(targetObject, this, argumentList))
+}

vendor/github.com/robertkrimen/otto/builtin_json.go

@@ -0,0 +1,299 @@
+package otto
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+type _builtinJSON_parseContext struct {
+	call    FunctionCall
+	reviver Value
+}
+
+func builtinJSON_parse(call FunctionCall) Value {
+	ctx := _builtinJSON_parseContext{
+		call: call,
+	}
+	revive := false
+	if reviver := call.Argument(1); reviver.isCallable() {
+		revive = true
+		ctx.reviver = reviver
+	}
+
+	var root interface{}
+	err := json.Unmarshal([]byte(call.Argument(0).string()), &root)
+	if err != nil {
+		panic(call.runtime.panicSyntaxError(err.Error()))
+	}
+	value, exists := builtinJSON_parseWalk(ctx, root)
+	if !exists {
+		value = Value{}
+	}
+	if revive {
+		root := ctx.call.runtime.newObject()
+		root.put("", value, false)
+		return builtinJSON_reviveWalk(ctx, root, "")
+	}
+	return value
+}
+
+func builtinJSON_reviveWalk(ctx _builtinJSON_parseContext, holder *_object, name string) Value {
+	value := holder.get(name)
+	if object := value._object(); object != nil {
+		if isArray(object) {
+			length := int64(objectLength(object))
+			for index := int64(0); index < length; index += 1 {
+				name := arrayIndexToString(index)
+				value := builtinJSON_reviveWalk(ctx, object, name)
+				if value.IsUndefined() {
+					object.delete(name, false)
+				} else {
+					object.defineProperty(name, value, 0111, false)
+				}
+			}
+		} else {
+			object.enumerate(false, func(name string) bool {
+				value := builtinJSON_reviveWalk(ctx, object, name)
+				if value.IsUndefined() {
+					object.delete(name, false)
+				} else {
+					object.defineProperty(name, value, 0111, false)
+				}
+				return true
+			})
+		}
+	}
+	return ctx.reviver.call(ctx.call.runtime, toValue_object(holder), name, value)
+}
+
+func builtinJSON_parseWalk(ctx _builtinJSON_parseContext, rawValue interface{}) (Value, bool) {
+	switch value := rawValue.(type) {
+	case nil:
+		return nullValue, true
+	case bool:
+		return toValue_bool(value), true
+	case string:
+		return toValue_string(value), true
+	case float64:
+		return toValue_float64(value), true
+	case []interface{}:
+		arrayValue := make([]Value, len(value))
+		for index, rawValue := range value {
+			if value, exists := builtinJSON_parseWalk(ctx, rawValue); exists {
+				arrayValue[index] = value
+			}
+		}
+		return toValue_object(ctx.call.runtime.newArrayOf(arrayValue)), true
+	case map[string]interface{}:
+		object := ctx.call.runtime.newObject()
+		for name, rawValue := range value {
+			if value, exists := builtinJSON_parseWalk(ctx, rawValue); exists {
+				object.put(name, value, false)
+			}
+		}
+		return toValue_object(object), true
+	}
+	return Value{}, false
+}
+
+type _builtinJSON_stringifyContext struct {
+	call             FunctionCall
+	stack            []*_object
+	propertyList     []string
+	replacerFunction *Value
+	gap              string
+}
+
+func builtinJSON_stringify(call FunctionCall) Value {
+	ctx := _builtinJSON_stringifyContext{
+		call:  call,
+		stack: []*_object{nil},
+	}
+	replacer := call.Argument(1)._object()
+	if replacer != nil {
+		if isArray(replacer) {
+			length := objectLength(replacer)
+			seen := map[string]bool{}
+			propertyList := make([]string, length)
+			length = 0
+			for index, _ := range propertyList {
+				value := replacer.get(arrayIndexToString(int64(index)))
+				switch value.kind {
+				case valueObject:
+					switch value.value.(*_object).class {
+					case classString:
+					case classNumber:
+					default:
+						continue
+					}
+				case valueString:
+				case valueNumber:
+				default:
+					continue
+				}
+				name := value.string()
+				if seen[name] {
+					continue
+				}
+				seen[name] = true
+				length += 1
+				propertyList[index] = name
+			}
+			ctx.propertyList = propertyList[0:length]
+		} else if replacer.class == classFunction {
+			value := toValue_object(replacer)
+			ctx.replacerFunction = &value
+		}
+	}
+	if spaceValue, exists := call.getArgument(2); exists {
+		if spaceValue.kind == valueObject {
+			switch spaceValue.value.(*_object).class {
+			case classString:
+				spaceValue = toValue_string(spaceValue.string())
+			case classNumber:
+				spaceValue = spaceValue.numberValue()
+			}
+		}
+		switch spaceValue.kind {
+		case valueString:
+			value := spaceValue.string()
+			if len(value) > 10 {
+				ctx.gap = value[0:10]
+			} else {
+				ctx.gap = value
+			}
+		case valueNumber:
+			value := spaceValue.number().int64
+			if value > 10 {
+				value = 10
+			} else if value < 0 {
+				value = 0
+			}
+			ctx.gap = strings.Repeat(" ", int(value))
+		}
+	}
+	holder := call.runtime.newObject()
+	holder.put("", call.Argument(0), false)
+	value, exists := builtinJSON_stringifyWalk(ctx, "", holder)
+	if !exists {
+		return Value{}
+	}
+	valueJSON, err := json.Marshal(value)
+	if err != nil {
+		panic(call.runtime.panicTypeError(err.Error()))
+	}
+	if ctx.gap != "" {
+		valueJSON1 := bytes.Buffer{}
+		json.Indent(&valueJSON1, valueJSON, "", ctx.gap)
+		valueJSON = valueJSON1.Bytes()
+	}
+	return toValue_string(string(valueJSON))
+}
+
+func builtinJSON_stringifyWalk(ctx _builtinJSON_stringifyContext, key string, holder *_object) (interface{}, bool) {
+	value := holder.get(key)
+
+	if value.IsObject() {
+		object := value._object()
+		if toJSON := object.get("toJSON"); toJSON.IsFunction() {
+			value = toJSON.call(ctx.call.runtime, value, key)
+		} else {
+			// If the object is a GoStruct or something that implements json.Marshaler
+			if object.objectClass.marshalJSON != nil {
+				marshaler := object.objectClass.marshalJSON(object)
+				if marshaler != nil {
+					return marshaler, true
+				}
+			}
+		}
+	}
+
+	if ctx.replacerFunction != nil {
+		value = ctx.replacerFunction.call(ctx.call.runtime, toValue_object(holder), key, value)
+	}
+
+	if value.kind == valueObject {
+		switch value.value.(*_object).class {
+		case classBoolean:
+			value = value._object().value.(Value)
+		case classString:
+			value = toValue_string(value.string())
+		case classNumber:
+			value = value.numberValue()
+		}
+	}
+
+	switch value.kind {
+	case valueBoolean:
+		return value.bool(), true
+	case valueString:
+		return value.string(), true
+	case valueNumber:
+		integer := value.number()
+		switch integer.kind {
+		case numberInteger:
+			return integer.int64, true
+		case numberFloat:
+			return integer.float64, true
+		default:
+			return nil, true
+		}
+	case valueNull:
+		return nil, true
+	case valueObject:
+		holder := value._object()
+		if value := value._object(); nil != value {
+			for _, object := range ctx.stack {
+				if holder == object {
+					panic(ctx.call.runtime.panicTypeError("Converting circular structure to JSON"))
+				}
+			}
+			ctx.stack = append(ctx.stack, value)
+			defer func() { ctx.stack = ctx.stack[:len(ctx.stack)-1] }()
+		}
+		if isArray(holder) {
+			var length uint32
+			switch value := holder.get(propertyLength).value.(type) {
+			case uint32:
+				length = value
+			case int:
+				if value >= 0 {
+					length = uint32(value)
+				}
+			default:
+				panic(ctx.call.runtime.panicTypeError(fmt.Sprintf("JSON.stringify: invalid length: %v (%[1]T)", value)))
+			}
+			array := make([]interface{}, length)
+			for index, _ := range array {
+				name := arrayIndexToString(int64(index))
+				value, _ := builtinJSON_stringifyWalk(ctx, name, holder)
+				array[index] = value
+			}
+			return array, true
+		} else if holder.class != classFunction {
+			object := map[string]interface{}{}
+			if ctx.propertyList != nil {
+				for _, name := range ctx.propertyList {
+					value, exists := builtinJSON_stringifyWalk(ctx, name, holder)
+					if exists {
+						object[name] = value
+					}
+				}
+			} else {
+				// Go maps are without order, so this doesn't conform to the ECMA ordering
+				// standard, but oh well...
+				holder.enumerate(false, func(name string) bool {
+					value, exists := builtinJSON_stringifyWalk(ctx, name, holder)
+					if exists {
+						object[name] = value
+					}
+					return true
+				})
+			}
+			return object, true
+		}
+	}
+	return nil, false
+}

vendor/github.com/robertkrimen/otto/builtin_math.go

@@ -0,0 +1,151 @@
+package otto
+
+import (
+	"math"
+	"math/rand"
+)
+
+// Math
+
+func builtinMath_abs(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Abs(number))
+}
+
+func builtinMath_acos(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Acos(number))
+}
+
+func builtinMath_asin(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Asin(number))
+}
+
+func builtinMath_atan(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Atan(number))
+}
+
+func builtinMath_atan2(call FunctionCall) Value {
+	y := call.Argument(0).float64()
+	if math.IsNaN(y) {
+		return NaNValue()
+	}
+	x := call.Argument(1).float64()
+	if math.IsNaN(x) {
+		return NaNValue()
+	}
+	return toValue_float64(math.Atan2(y, x))
+}
+
+func builtinMath_cos(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Cos(number))
+}
+
+func builtinMath_ceil(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Ceil(number))
+}
+
+func builtinMath_exp(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Exp(number))
+}
+
+func builtinMath_floor(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Floor(number))
+}
+
+func builtinMath_log(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Log(number))
+}
+
+func builtinMath_max(call FunctionCall) Value {
+	switch len(call.ArgumentList) {
+	case 0:
+		return negativeInfinityValue()
+	case 1:
+		return toValue_float64(call.ArgumentList[0].float64())
+	}
+	result := call.ArgumentList[0].float64()
+	if math.IsNaN(result) {
+		return NaNValue()
+	}
+	for _, value := range call.ArgumentList[1:] {
+		value := value.float64()
+		if math.IsNaN(value) {
+			return NaNValue()
+		}
+		result = math.Max(result, value)
+	}
+	return toValue_float64(result)
+}
+
+func builtinMath_min(call FunctionCall) Value {
+	switch len(call.ArgumentList) {
+	case 0:
+		return positiveInfinityValue()
+	case 1:
+		return toValue_float64(call.ArgumentList[0].float64())
+	}
+	result := call.ArgumentList[0].float64()
+	if math.IsNaN(result) {
+		return NaNValue()
+	}
+	for _, value := range call.ArgumentList[1:] {
+		value := value.float64()
+		if math.IsNaN(value) {
+			return NaNValue()
+		}
+		result = math.Min(result, value)
+	}
+	return toValue_float64(result)
+}
+
+func builtinMath_pow(call FunctionCall) Value {
+	// TODO Make sure this works according to the specification (15.8.2.13)
+	x := call.Argument(0).float64()
+	y := call.Argument(1).float64()
+	if math.Abs(x) == 1 && math.IsInf(y, 0) {
+		return NaNValue()
+	}
+	return toValue_float64(math.Pow(x, y))
+}
+
+func builtinMath_random(call FunctionCall) Value {
+	var v float64
+	if call.runtime.random != nil {
+		v = call.runtime.random()
+	} else {
+		v = rand.Float64()
+	}
+	return toValue_float64(v)
+}
+
+func builtinMath_round(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	value := math.Floor(number + 0.5)
+	if value == 0 {
+		value = math.Copysign(0, number)
+	}
+	return toValue_float64(value)
+}
+
+func builtinMath_sin(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Sin(number))
+}
+
+func builtinMath_sqrt(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Sqrt(number))
+}
+
+func builtinMath_tan(call FunctionCall) Value {
+	number := call.Argument(0).float64()
+	return toValue_float64(math.Tan(number))
+}

vendor/github.com/robertkrimen/otto/builtin_number.go

@@ -0,0 +1,100 @@
+package otto
+
+import (
+	"math"
+	"strconv"
+)
+
+// Number
+
+func numberValueFromNumberArgumentList(argumentList []Value) Value {
+	if len(argumentList) > 0 {
+		return argumentList[0].numberValue()
+	}
+	return toValue_int(0)
+}
+
+func builtinNumber(call FunctionCall) Value {
+	return numberValueFromNumberArgumentList(call.ArgumentList)
+}
+
+func builtinNewNumber(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newNumber(numberValueFromNumberArgumentList(argumentList)))
+}
+
+func builtinNumber_toString(call FunctionCall) Value {
+	// Will throw a TypeError if ThisObject is not a Number
+	value := call.thisClassObject(classNumber).primitiveValue()
+	radix := 10
+	radixArgument := call.Argument(0)
+	if radixArgument.IsDefined() {
+		integer := toIntegerFloat(radixArgument)
+		if integer < 2 || integer > 36 {
+			panic(call.runtime.panicRangeError("toString() radix must be between 2 and 36"))
+		}
+		radix = int(integer)
+	}
+	if radix == 10 {
+		return toValue_string(value.string())
+	}
+	return toValue_string(numberToStringRadix(value, radix))
+}
+
+func builtinNumber_valueOf(call FunctionCall) Value {
+	return call.thisClassObject(classNumber).primitiveValue()
+}
+
+func builtinNumber_toFixed(call FunctionCall) Value {
+	precision := toIntegerFloat(call.Argument(0))
+	if 20 < precision || 0 > precision {
+		panic(call.runtime.panicRangeError("toFixed() precision must be between 0 and 20"))
+	}
+	if call.This.IsNaN() {
+		return toValue_string("NaN")
+	}
+	value := call.This.float64()
+	if math.Abs(value) >= 1e21 {
+		return toValue_string(floatToString(value, 64))
+	}
+	return toValue_string(strconv.FormatFloat(call.This.float64(), 'f', int(precision), 64))
+}
+
+func builtinNumber_toExponential(call FunctionCall) Value {
+	if call.This.IsNaN() {
+		return toValue_string("NaN")
+	}
+	precision := float64(-1)
+	if value := call.Argument(0); value.IsDefined() {
+		precision = toIntegerFloat(value)
+		if 0 > precision {
+			panic(call.runtime.panicRangeError("toString() radix must be between 2 and 36"))
+		}
+	}
+	return toValue_string(strconv.FormatFloat(call.This.float64(), 'e', int(precision), 64))
+}
+
+func builtinNumber_toPrecision(call FunctionCall) Value {
+	if call.This.IsNaN() {
+		return toValue_string("NaN")
+	}
+	value := call.Argument(0)
+	if value.IsUndefined() {
+		return toValue_string(call.This.string())
+	}
+	precision := toIntegerFloat(value)
+	if 1 > precision {
+		panic(call.runtime.panicRangeError("toPrecision() precision must be greater than 1"))
+	}
+	return toValue_string(strconv.FormatFloat(call.This.float64(), 'g', int(precision), 64))
+}
+
+func builtinNumber_isNaN(call FunctionCall) Value {
+	if len(call.ArgumentList) < 1 {
+		return toValue_bool(false)
+	}
+	return toValue_bool(call.Argument(0).IsNaN())
+}
+
+func builtinNumber_toLocaleString(call FunctionCall) Value {
+	return builtinNumber_toString(call)
+}

vendor/github.com/robertkrimen/otto/builtin_object.go

@@ -0,0 +1,289 @@
+package otto
+
+import (
+	"fmt"
+)
+
+// Object
+
+func builtinObject(call FunctionCall) Value {
+	value := call.Argument(0)
+	switch value.kind {
+	case valueUndefined, valueNull:
+		return toValue_object(call.runtime.newObject())
+	}
+
+	return toValue_object(call.runtime.toObject(value))
+}
+
+func builtinNewObject(self *_object, argumentList []Value) Value {
+	value := valueOfArrayIndex(argumentList, 0)
+	switch value.kind {
+	case valueNull, valueUndefined:
+	case valueNumber, valueString, valueBoolean:
+		return toValue_object(self.runtime.toObject(value))
+	case valueObject:
+		return value
+	default:
+	}
+	return toValue_object(self.runtime.newObject())
+}
+
+func builtinObject_valueOf(call FunctionCall) Value {
+	return toValue_object(call.thisObject())
+}
+
+func builtinObject_hasOwnProperty(call FunctionCall) Value {
+	propertyName := call.Argument(0).string()
+	thisObject := call.thisObject()
+	return toValue_bool(thisObject.hasOwnProperty(propertyName))
+}
+
+func builtinObject_isPrototypeOf(call FunctionCall) Value {
+	value := call.Argument(0)
+	if !value.IsObject() {
+		return falseValue
+	}
+	prototype := call.toObject(value).prototype
+	thisObject := call.thisObject()
+	for prototype != nil {
+		if thisObject == prototype {
+			return trueValue
+		}
+		prototype = prototype.prototype
+	}
+	return falseValue
+}
+
+func builtinObject_propertyIsEnumerable(call FunctionCall) Value {
+	propertyName := call.Argument(0).string()
+	thisObject := call.thisObject()
+	property := thisObject.getOwnProperty(propertyName)
+	if property != nil && property.enumerable() {
+		return trueValue
+	}
+	return falseValue
+}
+
+func builtinObject_toString(call FunctionCall) Value {
+	var result string
+	if call.This.IsUndefined() {
+		result = "[object Undefined]"
+	} else if call.This.IsNull() {
+		result = "[object Null]"
+	} else {
+		result = fmt.Sprintf("[object %s]", call.thisObject().class)
+	}
+	return toValue_string(result)
+}
+
+func builtinObject_toLocaleString(call FunctionCall) Value {
+	toString := call.thisObject().get("toString")
+	if !toString.isCallable() {
+		panic(call.runtime.panicTypeError())
+	}
+	return toString.call(call.runtime, call.This)
+}
+
+func builtinObject_getPrototypeOf(call FunctionCall) Value {
+	objectValue := call.Argument(0)
+	object := objectValue._object()
+	if object == nil {
+		panic(call.runtime.panicTypeError())
+	}
+
+	if object.prototype == nil {
+		return nullValue
+	}
+
+	return toValue_object(object.prototype)
+}
+
+func builtinObject_getOwnPropertyDescriptor(call FunctionCall) Value {
+	objectValue := call.Argument(0)
+	object := objectValue._object()
+	if object == nil {
+		panic(call.runtime.panicTypeError())
+	}
+
+	name := call.Argument(1).string()
+	descriptor := object.getOwnProperty(name)
+	if descriptor == nil {
+		return Value{}
+	}
+	return toValue_object(call.runtime.fromPropertyDescriptor(*descriptor))
+}
+
+func builtinObject_defineProperty(call FunctionCall) Value {
+	objectValue := call.Argument(0)
+	object := objectValue._object()
+	if object == nil {
+		panic(call.runtime.panicTypeError())
+	}
+	name := call.Argument(1).string()
+	descriptor := toPropertyDescriptor(call.runtime, call.Argument(2))
+	object.defineOwnProperty(name, descriptor, true)
+	return objectValue
+}
+
+func builtinObject_defineProperties(call FunctionCall) Value {
+	objectValue := call.Argument(0)
+	object := objectValue._object()
+	if object == nil {
+		panic(call.runtime.panicTypeError())
+	}
+
+	properties := call.runtime.toObject(call.Argument(1))
+	properties.enumerate(false, func(name string) bool {
+		descriptor := toPropertyDescriptor(call.runtime, properties.get(name))
+		object.defineOwnProperty(name, descriptor, true)
+		return true
+	})
+
+	return objectValue
+}
+
+func builtinObject_create(call FunctionCall) Value {
+	prototypeValue := call.Argument(0)
+	if !prototypeValue.IsNull() && !prototypeValue.IsObject() {
+		panic(call.runtime.panicTypeError())
+	}
+
+	object := call.runtime.newObject()
+	object.prototype = prototypeValue._object()
+
+	propertiesValue := call.Argument(1)
+	if propertiesValue.IsDefined() {
+		properties := call.runtime.toObject(propertiesValue)
+		properties.enumerate(false, func(name string) bool {
+			descriptor := toPropertyDescriptor(call.runtime, properties.get(name))
+			object.defineOwnProperty(name, descriptor, true)
+			return true
+		})
+	}
+
+	return toValue_object(object)
+}
+
+func builtinObject_isExtensible(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		return toValue_bool(object.extensible)
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinObject_preventExtensions(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		object.extensible = false
+	} else {
+		panic(call.runtime.panicTypeError())
+	}
+	return object
+}
+
+func builtinObject_isSealed(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		if object.extensible {
+			return toValue_bool(false)
+		}
+		result := true
+		object.enumerate(true, func(name string) bool {
+			property := object.getProperty(name)
+			if property.configurable() {
+				result = false
+			}
+			return true
+		})
+		return toValue_bool(result)
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinObject_seal(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		object.enumerate(true, func(name string) bool {
+			if property := object.getOwnProperty(name); nil != property && property.configurable() {
+				property.configureOff()
+				object.defineOwnProperty(name, *property, true)
+			}
+			return true
+		})
+		object.extensible = false
+	} else {
+		panic(call.runtime.panicTypeError())
+	}
+	return object
+}
+
+func builtinObject_isFrozen(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		if object.extensible {
+			return toValue_bool(false)
+		}
+		result := true
+		object.enumerate(true, func(name string) bool {
+			property := object.getProperty(name)
+			if property.configurable() || property.writable() {
+				result = false
+			}
+			return true
+		})
+		return toValue_bool(result)
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinObject_freeze(call FunctionCall) Value {
+	object := call.Argument(0)
+	if object := object._object(); object != nil {
+		object.enumerate(true, func(name string) bool {
+			if property, update := object.getOwnProperty(name), false; nil != property {
+				if property.isDataDescriptor() && property.writable() {
+					property.writeOff()
+					update = true
+				}
+				if property.configurable() {
+					property.configureOff()
+					update = true
+				}
+				if update {
+					object.defineOwnProperty(name, *property, true)
+				}
+			}
+			return true
+		})
+		object.extensible = false
+	} else {
+		panic(call.runtime.panicTypeError())
+	}
+	return object
+}
+
+func builtinObject_keys(call FunctionCall) Value {
+	if object, keys := call.Argument(0)._object(), []Value(nil); nil != object {
+		object.enumerate(false, func(name string) bool {
+			keys = append(keys, toValue_string(name))
+			return true
+		})
+		return toValue_object(call.runtime.newArrayOf(keys))
+	}
+	panic(call.runtime.panicTypeError())
+}
+
+func builtinObject_getOwnPropertyNames(call FunctionCall) Value {
+	if object, propertyNames := call.Argument(0)._object(), []Value(nil); nil != object {
+		object.enumerate(true, func(name string) bool {
+			if object.hasOwnProperty(name) {
+				propertyNames = append(propertyNames, toValue_string(name))
+			}
+			return true
+		})
+		return toValue_object(call.runtime.newArrayOf(propertyNames))
+	}
+	panic(call.runtime.panicTypeError())
+}

vendor/github.com/robertkrimen/otto/builtin_regexp.go

@@ -0,0 +1,65 @@
+package otto
+
+import (
+	"fmt"
+)
+
+// RegExp
+
+func builtinRegExp(call FunctionCall) Value {
+	pattern := call.Argument(0)
+	flags := call.Argument(1)
+	if object := pattern._object(); object != nil {
+		if object.class == classRegExp && flags.IsUndefined() {
+			return pattern
+		}
+	}
+	return toValue_object(call.runtime.newRegExp(pattern, flags))
+}
+
+func builtinNewRegExp(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newRegExp(
+		valueOfArrayIndex(argumentList, 0),
+		valueOfArrayIndex(argumentList, 1),
+	))
+}
+
+func builtinRegExp_toString(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	source := thisObject.get("source").string()
+	flags := []byte{}
+	if thisObject.get("global").bool() {
+		flags = append(flags, 'g')
+	}
+	if thisObject.get("ignoreCase").bool() {
+		flags = append(flags, 'i')
+	}
+	if thisObject.get("multiline").bool() {
+		flags = append(flags, 'm')
+	}
+	return toValue_string(fmt.Sprintf("/%s/%s", source, flags))
+}
+
+func builtinRegExp_exec(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	target := call.Argument(0).string()
+	match, result := execRegExp(thisObject, target)
+	if !match {
+		return nullValue
+	}
+	return toValue_object(execResultToArray(call.runtime, target, result))
+}
+
+func builtinRegExp_test(call FunctionCall) Value {
+	thisObject := call.thisObject()
+	target := call.Argument(0).string()
+	match, _ := execRegExp(thisObject, target)
+	return toValue_bool(match)
+}
+
+func builtinRegExp_compile(call FunctionCall) Value {
+	// This (useless) function is deprecated, but is here to provide some
+	// semblance of compatibility.
+	// Caveat emptor: it may not be around for long.
+	return Value{}
+}

vendor/github.com/robertkrimen/otto/builtin_string.go

@@ -0,0 +1,491 @@
+package otto
+
+import (
+	"bytes"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+// String
+
+func stringValueFromStringArgumentList(argumentList []Value) Value {
+	if len(argumentList) > 0 {
+		return toValue_string(argumentList[0].string())
+	}
+	return toValue_string("")
+}
+
+func builtinString(call FunctionCall) Value {
+	return stringValueFromStringArgumentList(call.ArgumentList)
+}
+
+func builtinNewString(self *_object, argumentList []Value) Value {
+	return toValue_object(self.runtime.newString(stringValueFromStringArgumentList(argumentList)))
+}
+
+func builtinString_toString(call FunctionCall) Value {
+	return call.thisClassObject(classString).primitiveValue()
+}
+func builtinString_valueOf(call FunctionCall) Value {
+	return call.thisClassObject(classString).primitiveValue()
+}
+
+func builtinString_fromCharCode(call FunctionCall) Value {
+	chrList := make([]uint16, len(call.ArgumentList))
+	for index, value := range call.ArgumentList {
+		chrList[index] = toUint16(value)
+	}
+	return toValue_string16(chrList)
+}
+
+func builtinString_charAt(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	idx := int(call.Argument(0).number().int64)
+	chr := stringAt(call.This._object().stringValue(), idx)
+	if chr == utf8.RuneError {
+		return toValue_string("")
+	}
+	return toValue_string(string(chr))
+}
+
+func builtinString_charCodeAt(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	idx := int(call.Argument(0).number().int64)
+	chr := stringAt(call.This._object().stringValue(), idx)
+	if chr == utf8.RuneError {
+		return NaNValue()
+	}
+	return toValue_uint16(uint16(chr))
+}
+
+func builtinString_concat(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	var value bytes.Buffer
+	value.WriteString(call.This.string())
+	for _, item := range call.ArgumentList {
+		value.WriteString(item.string())
+	}
+	return toValue_string(value.String())
+}
+
+func builtinString_indexOf(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	value := call.This.string()
+	target := call.Argument(0).string()
+	if 2 > len(call.ArgumentList) {
+		return toValue_int(strings.Index(value, target))
+	}
+	start := toIntegerFloat(call.Argument(1))
+	if 0 > start {
+		start = 0
+	} else if start >= float64(len(value)) {
+		if target == "" {
+			return toValue_int(len(value))
+		}
+		return toValue_int(-1)
+	}
+	index := strings.Index(value[int(start):], target)
+	if index >= 0 {
+		index += int(start)
+	}
+	return toValue_int(index)
+}
+
+func builtinString_lastIndexOf(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	value := call.This.string()
+	target := call.Argument(0).string()
+	if 2 > len(call.ArgumentList) || call.ArgumentList[1].IsUndefined() {
+		return toValue_int(strings.LastIndex(value, target))
+	}
+	length := len(value)
+	if length == 0 {
+		return toValue_int(strings.LastIndex(value, target))
+	}
+	start := call.ArgumentList[1].number()
+	if start.kind == numberInfinity { // FIXME
+		// startNumber is infinity, so start is the end of string (start = length)
+		return toValue_int(strings.LastIndex(value, target))
+	}
+	if 0 > start.int64 {
+		start.int64 = 0
+	}
+	end := int(start.int64) + len(target)
+	if end > length {
+		end = length
+	}
+	return toValue_int(strings.LastIndex(value[:end], target))
+}
+
+func builtinString_match(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := call.This.string()
+	matcherValue := call.Argument(0)
+	matcher := matcherValue._object()
+	if !matcherValue.IsObject() || matcher.class != classRegExp {
+		matcher = call.runtime.newRegExp(matcherValue, Value{})
+	}
+	global := matcher.get("global").bool()
+	if !global {
+		match, result := execRegExp(matcher, target)
+		if !match {
+			return nullValue
+		}
+		return toValue_object(execResultToArray(call.runtime, target, result))
+	}
+
+	{
+		result := matcher.regExpValue().regularExpression.FindAllStringIndex(target, -1)
+		if result == nil {
+			matcher.put("lastIndex", toValue_int(0), true)
+			return Value{} // !match
+		}
+		matchCount := len(result)
+		valueArray := make([]Value, matchCount)
+		for index := 0; index < matchCount; index++ {
+			valueArray[index] = toValue_string(target[result[index][0]:result[index][1]])
+		}
+		matcher.put("lastIndex", toValue_int(result[matchCount-1][1]), true)
+		return toValue_object(call.runtime.newArrayOf(valueArray))
+	}
+}
+
+var builtinString_replace_Regexp = regexp.MustCompile("\\$(?:[\\$\\&\\'\\`1-9]|0[1-9]|[1-9][0-9])")
+
+func builtinString_findAndReplaceString(input []byte, lastIndex int, match []int, target []byte, replaceValue []byte) (output []byte) {
+	matchCount := len(match) / 2
+	output = input
+	if match[0] != lastIndex {
+		output = append(output, target[lastIndex:match[0]]...)
+	}
+	replacement := builtinString_replace_Regexp.ReplaceAllFunc(replaceValue, func(part []byte) []byte {
+		// TODO Check if match[0] or match[1] can be -1 in this scenario
+		switch part[1] {
+		case '$':
+			return []byte{'$'}
+		case '&':
+			return target[match[0]:match[1]]
+		case '`':
+			return target[:match[0]]
+		case '\'':
+			return target[match[1]:len(target)]
+		}
+		matchNumberParse, err := strconv.ParseInt(string(part[1:]), 10, 64)
+		if err != nil {
+			return []byte{}
+		}
+		matchNumber := int(matchNumberParse)
+		if matchNumber >= matchCount {
+			return []byte{}
+		}
+		offset := 2 * matchNumber
+		if match[offset] != -1 {
+			return target[match[offset]:match[offset+1]]
+		}
+		return []byte{} // The empty string
+	})
+	output = append(output, replacement...)
+	return output
+}
+
+func builtinString_replace(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := []byte(call.This.string())
+	searchValue := call.Argument(0)
+	searchObject := searchValue._object()
+
+	// TODO If a capture is -1?
+	var search *regexp.Regexp
+	global := false
+	find := 1
+	if searchValue.IsObject() && searchObject.class == classRegExp {
+		regExp := searchObject.regExpValue()
+		search = regExp.regularExpression
+		if regExp.global {
+			find = -1
+		}
+	} else {
+		search = regexp.MustCompile(regexp.QuoteMeta(searchValue.string()))
+	}
+
+	found := search.FindAllSubmatchIndex(target, find)
+	if found == nil {
+		return toValue_string(string(target)) // !match
+	}
+
+	{
+		lastIndex := 0
+		result := []byte{}
+
+		replaceValue := call.Argument(1)
+		if replaceValue.isCallable() {
+			target := string(target)
+			replace := replaceValue._object()
+			for _, match := range found {
+				if match[0] != lastIndex {
+					result = append(result, target[lastIndex:match[0]]...)
+				}
+				matchCount := len(match) / 2
+				argumentList := make([]Value, matchCount+2)
+				for index := 0; index < matchCount; index++ {
+					offset := 2 * index
+					if match[offset] != -1 {
+						argumentList[index] = toValue_string(target[match[offset]:match[offset+1]])
+					} else {
+						argumentList[index] = Value{}
+					}
+				}
+				argumentList[matchCount+0] = toValue_int(match[0])
+				argumentList[matchCount+1] = toValue_string(target)
+				replacement := replace.call(Value{}, argumentList, false, nativeFrame).string()
+				result = append(result, []byte(replacement)...)
+				lastIndex = match[1]
+			}
+
+		} else {
+			replace := []byte(replaceValue.string())
+			for _, match := range found {
+				result = builtinString_findAndReplaceString(result, lastIndex, match, target, replace)
+				lastIndex = match[1]
+			}
+		}
+
+		if lastIndex != len(target) {
+			result = append(result, target[lastIndex:]...)
+		}
+
+		if global && searchObject != nil {
+			searchObject.put("lastIndex", toValue_int(lastIndex), true)
+		}
+
+		return toValue_string(string(result))
+	}
+}
+
+func builtinString_search(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := call.This.string()
+	searchValue := call.Argument(0)
+	search := searchValue._object()
+	if !searchValue.IsObject() || search.class != classRegExp {
+		search = call.runtime.newRegExp(searchValue, Value{})
+	}
+	result := search.regExpValue().regularExpression.FindStringIndex(target)
+	if result == nil {
+		return toValue_int(-1)
+	}
+	return toValue_int(result[0])
+}
+
+func builtinString_split(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := call.This.string()
+
+	separatorValue := call.Argument(0)
+	limitValue := call.Argument(1)
+	limit := -1
+	if limitValue.IsDefined() {
+		limit = int(toUint32(limitValue))
+	}
+
+	if limit == 0 {
+		return toValue_object(call.runtime.newArray(0))
+	}
+
+	if separatorValue.IsUndefined() {
+		return toValue_object(call.runtime.newArrayOf([]Value{toValue_string(target)}))
+	}
+
+	if separatorValue.isRegExp() {
+		targetLength := len(target)
+		search := separatorValue._object().regExpValue().regularExpression
+		valueArray := []Value{}
+		result := search.FindAllStringSubmatchIndex(target, -1)
+		lastIndex := 0
+		found := 0
+
+		for _, match := range result {
+			if match[0] == match[1] {
+				// FIXME Ugh, this is a hack
+				if match[0] == 0 || match[0] == targetLength {
+					continue
+				}
+			}
+
+			if lastIndex != match[0] {
+				valueArray = append(valueArray, toValue_string(target[lastIndex:match[0]]))
+				found++
+			} else if lastIndex == match[0] {
+				if lastIndex != -1 {
+					valueArray = append(valueArray, toValue_string(""))
+					found++
+				}
+			}
+
+			lastIndex = match[1]
+			if found == limit {
+				goto RETURN
+			}
+
+			captureCount := len(match) / 2
+			for index := 1; index < captureCount; index++ {
+				offset := index * 2
+				value := Value{}
+				if match[offset] != -1 {
+					value = toValue_string(target[match[offset]:match[offset+1]])
+				}
+				valueArray = append(valueArray, value)
+				found++
+				if found == limit {
+					goto RETURN
+				}
+			}
+		}
+
+		if found != limit {
+			if lastIndex != targetLength {
+				valueArray = append(valueArray, toValue_string(target[lastIndex:targetLength]))
+			} else {
+				valueArray = append(valueArray, toValue_string(""))
+			}
+		}
+
+	RETURN:
+		return toValue_object(call.runtime.newArrayOf(valueArray))
+
+	} else {
+		separator := separatorValue.string()
+
+		splitLimit := limit
+		excess := false
+		if limit > 0 {
+			splitLimit = limit + 1
+			excess = true
+		}
+
+		split := strings.SplitN(target, separator, splitLimit)
+
+		if excess && len(split) > limit {
+			split = split[:limit]
+		}
+
+		valueArray := make([]Value, len(split))
+		for index, value := range split {
+			valueArray[index] = toValue_string(value)
+		}
+
+		return toValue_object(call.runtime.newArrayOf(valueArray))
+	}
+}
+
+func builtinString_slice(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := call.This.string()
+
+	length := int64(len(target))
+	start, end := rangeStartEnd(call.ArgumentList, length, false)
+	if end-start <= 0 {
+		return toValue_string("")
+	}
+	return toValue_string(target[start:end])
+}
+
+func builtinString_substring(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	target := call.This.string()
+
+	length := int64(len(target))
+	start, end := rangeStartEnd(call.ArgumentList, length, true)
+	if start > end {
+		start, end = end, start
+	}
+	return toValue_string(target[start:end])
+}
+
+func builtinString_substr(call FunctionCall) Value {
+	target := call.This.string()
+
+	size := int64(len(target))
+	start, length := rangeStartLength(call.ArgumentList, size)
+
+	if start >= size {
+		return toValue_string("")
+	}
+
+	if length <= 0 {
+		return toValue_string("")
+	}
+
+	if start+length >= size {
+		// Cap length to be to the end of the string
+		// start = 3, length = 5, size = 4 [0, 1, 2, 3]
+		// 4 - 3 = 1
+		// target[3:4]
+		length = size - start
+	}
+
+	return toValue_string(target[start : start+length])
+}
+
+func builtinString_toLowerCase(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	return toValue_string(strings.ToLower(call.This.string()))
+}
+
+func builtinString_toUpperCase(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	return toValue_string(strings.ToUpper(call.This.string()))
+}
+
+// 7.2 Table 2 — Whitespace Characters & 7.3 Table 3 - Line Terminator Characters
+const builtinString_trim_whitespace = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF"
+
+func builtinString_trim(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	return toValue(strings.Trim(call.This.string(),
+		builtinString_trim_whitespace))
+}
+
+// Mozilla extension, not ECMAScript 5
+func builtinString_trimLeft(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	return toValue(strings.TrimLeft(call.This.string(),
+		builtinString_trim_whitespace))
+}
+
+// Mozilla extension, not ECMAScript 5
+func builtinString_trimRight(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	return toValue(strings.TrimRight(call.This.string(),
+		builtinString_trim_whitespace))
+}
+
+func builtinString_localeCompare(call FunctionCall) Value {
+	checkObjectCoercible(call.runtime, call.This)
+	this := call.This.string()
+	that := call.Argument(0).string()
+	if this < that {
+		return toValue_int(-1)
+	} else if this == that {
+		return toValue_int(0)
+	}
+	return toValue_int(1)
+}
+
+/*
+An alternate version of String.trim
+func builtinString_trim(call FunctionCall) Value {
+	checkObjectCoercible(call.This)
+	return toValue_string(strings.TrimFunc(call.string(.This), isWhiteSpaceOrLineTerminator))
+}
+*/
+
+func builtinString_toLocaleLowerCase(call FunctionCall) Value {
+	return builtinString_toLowerCase(call)
+}
+
+func builtinString_toLocaleUpperCase(call FunctionCall) Value {
+	return builtinString_toUpperCase(call)
+}

vendor/github.com/robertkrimen/otto/clone.go

@@ -0,0 +1,173 @@
+package otto
+
+import (
+	"fmt"
+)
+
+type _clone struct {
+	runtime      *_runtime
+	_object      map[*_object]*_object
+	_objectStash map[*_objectStash]*_objectStash
+	_dclStash    map[*_dclStash]*_dclStash
+	_fnStash     map[*_fnStash]*_fnStash
+}
+
+func (in *_runtime) clone() *_runtime {
+
+	in.lck.Lock()
+	defer in.lck.Unlock()
+
+	out := &_runtime{
+		debugger:   in.debugger,
+		random:     in.random,
+		stackLimit: in.stackLimit,
+		traceLimit: in.traceLimit,
+	}
+
+	clone := _clone{
+		runtime:      out,
+		_object:      make(map[*_object]*_object),
+		_objectStash: make(map[*_objectStash]*_objectStash),
+		_dclStash:    make(map[*_dclStash]*_dclStash),
+		_fnStash:     make(map[*_fnStash]*_fnStash),
+	}
+
+	globalObject := clone.object(in.globalObject)
+	out.globalStash = out.newObjectStash(globalObject, nil)
+	out.globalObject = globalObject
+	out.global = _global{
+		clone.object(in.global.Object),
+		clone.object(in.global.Function),
+		clone.object(in.global.Array),
+		clone.object(in.global.String),
+		clone.object(in.global.Boolean),
+		clone.object(in.global.Number),
+		clone.object(in.global.Math),
+		clone.object(in.global.Date),
+		clone.object(in.global.RegExp),
+		clone.object(in.global.Error),
+		clone.object(in.global.EvalError),
+		clone.object(in.global.TypeError),
+		clone.object(in.global.RangeError),
+		clone.object(in.global.ReferenceError),
+		clone.object(in.global.SyntaxError),
+		clone.object(in.global.URIError),
+		clone.object(in.global.JSON),
+
+		clone.object(in.global.ObjectPrototype),
+		clone.object(in.global.FunctionPrototype),
+		clone.object(in.global.ArrayPrototype),
+		clone.object(in.global.StringPrototype),
+		clone.object(in.global.BooleanPrototype),
+		clone.object(in.global.NumberPrototype),
+		clone.object(in.global.DatePrototype),
+		clone.object(in.global.RegExpPrototype),
+		clone.object(in.global.ErrorPrototype),
+		clone.object(in.global.EvalErrorPrototype),
+		clone.object(in.global.TypeErrorPrototype),
+		clone.object(in.global.RangeErrorPrototype),
+		clone.object(in.global.ReferenceErrorPrototype),
+		clone.object(in.global.SyntaxErrorPrototype),
+		clone.object(in.global.URIErrorPrototype),
+	}
+
+	out.eval = out.globalObject.property["eval"].value.(Value).value.(*_object)
+	out.globalObject.prototype = out.global.ObjectPrototype
+
+	// Not sure if this is necessary, but give some help to the GC
+	clone.runtime = nil
+	clone._object = nil
+	clone._objectStash = nil
+	clone._dclStash = nil
+	clone._fnStash = nil
+
+	return out
+}
+
+func (clone *_clone) object(in *_object) *_object {
+	if out, exists := clone._object[in]; exists {
+		return out
+	}
+	out := &_object{}
+	clone._object[in] = out
+	return in.objectClass.clone(in, out, clone)
+}
+
+func (clone *_clone) dclStash(in *_dclStash) (*_dclStash, bool) {
+	if out, exists := clone._dclStash[in]; exists {
+		return out, true
+	}
+	out := &_dclStash{}
+	clone._dclStash[in] = out
+	return out, false
+}
+
+func (clone *_clone) objectStash(in *_objectStash) (*_objectStash, bool) {
+	if out, exists := clone._objectStash[in]; exists {
+		return out, true
+	}
+	out := &_objectStash{}
+	clone._objectStash[in] = out
+	return out, false
+}
+
+func (clone *_clone) fnStash(in *_fnStash) (*_fnStash, bool) {
+	if out, exists := clone._fnStash[in]; exists {
+		return out, true
+	}
+	out := &_fnStash{}
+	clone._fnStash[in] = out
+	return out, false
+}
+
+func (clone *_clone) value(in Value) Value {
+	out := in
+	switch value := in.value.(type) {
+	case *_object:
+		out.value = clone.object(value)
+	}
+	return out
+}
+
+func (clone *_clone) valueArray(in []Value) []Value {
+	out := make([]Value, len(in))
+	for index, value := range in {
+		out[index] = clone.value(value)
+	}
+	return out
+}
+
+func (clone *_clone) stash(in _stash) _stash {
+	if in == nil {
+		return nil
+	}
+	return in.clone(clone)
+}
+
+func (clone *_clone) property(in _property) _property {
+	out := in
+
+	switch value := in.value.(type) {
+	case Value:
+		out.value = clone.value(value)
+	case _propertyGetSet:
+		p := _propertyGetSet{}
+		if value[0] != nil {
+			p[0] = clone.object(value[0])
+		}
+		if value[1] != nil {
+			p[1] = clone.object(value[1])
+		}
+		out.value = p
+	default:
+		panic(fmt.Errorf("in.value.(Value) != true; in.value is %T", in.value))
+	}
+
+	return out
+}
+
+func (clone *_clone) dclProperty(in _dclProperty) _dclProperty {
+	out := in
+	out.value = clone.value(in.value)
+	return out
+}

vendor/github.com/robertkrimen/otto/cmpl.go

@@ -0,0 +1,18 @@
+package otto
+
+import (
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+)
+
+type _compiler struct {
+	file    *file.File
+	program *ast.Program
+}
+
+func (cmpl *_compiler) parse() *_nodeProgram {
+	if cmpl.program != nil {
+		cmpl.file = cmpl.program.File
+	}
+	return cmpl._parse(cmpl.program)
+}

vendor/github.com/robertkrimen/otto/cmpl_evaluate.go

@@ -0,0 +1,96 @@
+package otto
+
+import (
+	"strconv"
+)
+
+func (self *_runtime) cmpl_evaluate_nodeProgram(node *_nodeProgram, eval bool) Value {
+	if !eval {
+		self.enterGlobalScope()
+		defer func() {
+			self.leaveScope()
+		}()
+	}
+	self.cmpl_functionDeclaration(node.functionList)
+	self.cmpl_variableDeclaration(node.varList)
+	self.scope.frame.file = node.file
+	return self.cmpl_evaluate_nodeStatementList(node.body)
+}
+
+func (self *_runtime) cmpl_call_nodeFunction(function *_object, stash *_fnStash, node *_nodeFunctionLiteral, this Value, argumentList []Value) Value {
+
+	indexOfParameterName := make([]string, len(argumentList))
+	// function(abc, def, ghi)
+	// indexOfParameterName[0] = "abc"
+	// indexOfParameterName[1] = "def"
+	// indexOfParameterName[2] = "ghi"
+	// ...
+
+	argumentsFound := false
+	for index, name := range node.parameterList {
+		if name == "arguments" {
+			argumentsFound = true
+		}
+		value := Value{}
+		if index < len(argumentList) {
+			value = argumentList[index]
+			indexOfParameterName[index] = name
+		}
+		// strict = false
+		self.scope.lexical.setValue(name, value, false)
+	}
+
+	if !argumentsFound {
+		arguments := self.newArgumentsObject(indexOfParameterName, stash, len(argumentList))
+		arguments.defineProperty("callee", toValue_object(function), 0101, false)
+		stash.arguments = arguments
+		// strict = false
+		self.scope.lexical.setValue("arguments", toValue_object(arguments), false)
+		for index, _ := range argumentList {
+			if index < len(node.parameterList) {
+				continue
+			}
+			indexAsString := strconv.FormatInt(int64(index), 10)
+			arguments.defineProperty(indexAsString, argumentList[index], 0111, false)
+		}
+	}
+
+	self.cmpl_functionDeclaration(node.functionList)
+	self.cmpl_variableDeclaration(node.varList)
+
+	result := self.cmpl_evaluate_nodeStatement(node.body)
+	if result.kind == valueResult {
+		return result
+	}
+
+	return Value{}
+}
+
+func (self *_runtime) cmpl_functionDeclaration(list []*_nodeFunctionLiteral) {
+	executionContext := self.scope
+	eval := executionContext.eval
+	stash := executionContext.variable
+
+	for _, function := range list {
+		name := function.name
+		value := self.cmpl_evaluate_nodeExpression(function)
+		if !stash.hasBinding(name) {
+			stash.createBinding(name, eval == true, value)
+		} else {
+			// TODO 10.5.5.e
+			stash.setBinding(name, value, false) // TODO strict
+		}
+	}
+}
+
+func (self *_runtime) cmpl_variableDeclaration(list []string) {
+	executionContext := self.scope
+	eval := executionContext.eval
+	stash := executionContext.variable
+
+	for _, name := range list {
+		if !stash.hasBinding(name) {
+			stash.createBinding(name, eval == true, Value{}) // TODO strict?
+		}
+	}
+}

vendor/github.com/robertkrimen/otto/cmpl_evaluate_expression.go

@@ -0,0 +1,460 @@
+package otto
+
+import (
+	"fmt"
+	"math"
+	"runtime"
+
+	"github.com/robertkrimen/otto/token"
+)
+
+func (self *_runtime) cmpl_evaluate_nodeExpression(node _nodeExpression) Value {
+	// Allow interpreter interruption
+	// If the Interrupt channel is nil, then
+	// we avoid runtime.Gosched() overhead (if any)
+	// FIXME: Test this
+	if self.otto.Interrupt != nil {
+		runtime.Gosched()
+		select {
+		case value := <-self.otto.Interrupt:
+			value()
+		default:
+		}
+	}
+
+	switch node := node.(type) {
+
+	case *_nodeArrayLiteral:
+		return self.cmpl_evaluate_nodeArrayLiteral(node)
+
+	case *_nodeAssignExpression:
+		return self.cmpl_evaluate_nodeAssignExpression(node)
+
+	case *_nodeBinaryExpression:
+		if node.comparison {
+			return self.cmpl_evaluate_nodeBinaryExpression_comparison(node)
+		} else {
+			return self.cmpl_evaluate_nodeBinaryExpression(node)
+		}
+
+	case *_nodeBracketExpression:
+		return self.cmpl_evaluate_nodeBracketExpression(node)
+
+	case *_nodeCallExpression:
+		return self.cmpl_evaluate_nodeCallExpression(node, nil)
+
+	case *_nodeConditionalExpression:
+		return self.cmpl_evaluate_nodeConditionalExpression(node)
+
+	case *_nodeDotExpression:
+		return self.cmpl_evaluate_nodeDotExpression(node)
+
+	case *_nodeFunctionLiteral:
+		var local = self.scope.lexical
+		if node.name != "" {
+			local = self.newDeclarationStash(local)
+		}
+
+		value := toValue_object(self.newNodeFunction(node, local))
+		if node.name != "" {
+			local.createBinding(node.name, false, value)
+		}
+		return value
+
+	case *_nodeIdentifier:
+		name := node.name
+		// TODO Should be true or false (strictness) depending on context
+		// getIdentifierReference should not return nil, but we check anyway and panic
+		// so as not to propagate the nil into something else
+		reference := getIdentifierReference(self, self.scope.lexical, name, false, _at(node.idx))
+		if reference == nil {
+			// Should never get here!
+			panic(hereBeDragons("referenceError == nil: " + name))
+		}
+		return toValue(reference)
+
+	case *_nodeLiteral:
+		return node.value
+
+	case *_nodeNewExpression:
+		return self.cmpl_evaluate_nodeNewExpression(node)
+
+	case *_nodeObjectLiteral:
+		return self.cmpl_evaluate_nodeObjectLiteral(node)
+
+	case *_nodeRegExpLiteral:
+		return toValue_object(self._newRegExp(node.pattern, node.flags))
+
+	case *_nodeSequenceExpression:
+		return self.cmpl_evaluate_nodeSequenceExpression(node)
+
+	case *_nodeThisExpression:
+		return toValue_object(self.scope.this)
+
+	case *_nodeUnaryExpression:
+		return self.cmpl_evaluate_nodeUnaryExpression(node)
+
+	case *_nodeVariableExpression:
+		return self.cmpl_evaluate_nodeVariableExpression(node)
+	}
+
+	panic(fmt.Errorf("Here be dragons: evaluate_nodeExpression(%T)", node))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeArrayLiteral(node *_nodeArrayLiteral) Value {
+
+	valueArray := []Value{}
+
+	for _, node := range node.value {
+		if node == nil {
+			valueArray = append(valueArray, emptyValue)
+		} else {
+			valueArray = append(valueArray, self.cmpl_evaluate_nodeExpression(node).resolve())
+		}
+	}
+
+	result := self.newArrayOf(valueArray)
+
+	return toValue_object(result)
+}
+
+func (self *_runtime) cmpl_evaluate_nodeAssignExpression(node *_nodeAssignExpression) Value {
+
+	left := self.cmpl_evaluate_nodeExpression(node.left)
+	right := self.cmpl_evaluate_nodeExpression(node.right)
+	rightValue := right.resolve()
+
+	result := rightValue
+	if node.operator != token.ASSIGN {
+		result = self.calculateBinaryExpression(node.operator, left, rightValue)
+	}
+
+	self.putValue(left.reference(), result)
+
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeBinaryExpression(node *_nodeBinaryExpression) Value {
+
+	left := self.cmpl_evaluate_nodeExpression(node.left)
+	leftValue := left.resolve()
+
+	switch node.operator {
+	// Logical
+	case token.LOGICAL_AND:
+		if !leftValue.bool() {
+			return leftValue
+		}
+		right := self.cmpl_evaluate_nodeExpression(node.right)
+		return right.resolve()
+	case token.LOGICAL_OR:
+		if leftValue.bool() {
+			return leftValue
+		}
+		right := self.cmpl_evaluate_nodeExpression(node.right)
+		return right.resolve()
+	}
+
+	return self.calculateBinaryExpression(node.operator, leftValue, self.cmpl_evaluate_nodeExpression(node.right))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeBinaryExpression_comparison(node *_nodeBinaryExpression) Value {
+
+	left := self.cmpl_evaluate_nodeExpression(node.left).resolve()
+	right := self.cmpl_evaluate_nodeExpression(node.right).resolve()
+
+	return toValue_bool(self.calculateComparison(node.operator, left, right))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeBracketExpression(node *_nodeBracketExpression) Value {
+	target := self.cmpl_evaluate_nodeExpression(node.left)
+	targetValue := target.resolve()
+	member := self.cmpl_evaluate_nodeExpression(node.member)
+	memberValue := member.resolve()
+
+	// TODO Pass in base value as-is, and defer toObject till later?
+	object, err := self.objectCoerce(targetValue)
+	if err != nil {
+		panic(self.panicTypeError("Cannot access member '%s' of %s", memberValue.string(), err.Error(), _at(node.idx)))
+	}
+	return toValue(newPropertyReference(self, object, memberValue.string(), false, _at(node.idx)))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeCallExpression(node *_nodeCallExpression, withArgumentList []interface{}) Value {
+	rt := self
+	this := Value{}
+	callee := self.cmpl_evaluate_nodeExpression(node.callee)
+
+	argumentList := []Value{}
+	if withArgumentList != nil {
+		argumentList = self.toValueArray(withArgumentList...)
+	} else {
+		for _, argumentNode := range node.argumentList {
+			argumentList = append(argumentList, self.cmpl_evaluate_nodeExpression(argumentNode).resolve())
+		}
+	}
+
+	rf := callee.reference()
+	vl := callee.resolve()
+
+	eval := false // Whether this call is a (candidate for) direct call to eval
+	name := ""
+	if rf != nil {
+		switch rf := rf.(type) {
+		case *_propertyReference:
+			name = rf.name
+			object := rf.base
+			this = toValue_object(object)
+			eval = rf.name == "eval" // Possible direct eval
+		case *_stashReference:
+			// TODO ImplicitThisValue
+			name = rf.name
+			eval = rf.name == "eval" // Possible direct eval
+		default:
+			// FIXME?
+			panic(rt.panicTypeError("Here be dragons"))
+		}
+	}
+
+	at := _at(-1)
+	switch callee := node.callee.(type) {
+	case *_nodeIdentifier:
+		at = _at(callee.idx)
+	case *_nodeDotExpression:
+		at = _at(callee.idx)
+	case *_nodeBracketExpression:
+		at = _at(callee.idx)
+	}
+
+	frame := _frame{
+		callee: name,
+		file:   self.scope.frame.file,
+	}
+
+	if !vl.IsFunction() {
+		if name == "" {
+			// FIXME Maybe typeof?
+			panic(rt.panicTypeError("%v is not a function", vl, at))
+		}
+		panic(rt.panicTypeError("'%s' is not a function", name, at))
+	}
+
+	self.scope.frame.offset = int(at)
+
+	return vl._object().call(this, argumentList, eval, frame)
+}
+
+func (self *_runtime) cmpl_evaluate_nodeConditionalExpression(node *_nodeConditionalExpression) Value {
+	test := self.cmpl_evaluate_nodeExpression(node.test)
+	testValue := test.resolve()
+	if testValue.bool() {
+		return self.cmpl_evaluate_nodeExpression(node.consequent)
+	}
+	return self.cmpl_evaluate_nodeExpression(node.alternate)
+}
+
+func (self *_runtime) cmpl_evaluate_nodeDotExpression(node *_nodeDotExpression) Value {
+	target := self.cmpl_evaluate_nodeExpression(node.left)
+	targetValue := target.resolve()
+	// TODO Pass in base value as-is, and defer toObject till later?
+	object, err := self.objectCoerce(targetValue)
+	if err != nil {
+		panic(self.panicTypeError("Cannot access member '%s' of %s", node.identifier, err.Error(), _at(node.idx)))
+	}
+	return toValue(newPropertyReference(self, object, node.identifier, false, _at(node.idx)))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeNewExpression(node *_nodeNewExpression) Value {
+	rt := self
+	callee := self.cmpl_evaluate_nodeExpression(node.callee)
+
+	argumentList := []Value{}
+	for _, argumentNode := range node.argumentList {
+		argumentList = append(argumentList, self.cmpl_evaluate_nodeExpression(argumentNode).resolve())
+	}
+
+	rf := callee.reference()
+	vl := callee.resolve()
+
+	name := ""
+	if rf != nil {
+		switch rf := rf.(type) {
+		case *_propertyReference:
+			name = rf.name
+		case *_stashReference:
+			name = rf.name
+		default:
+			panic(rt.panicTypeError("Here be dragons"))
+		}
+	}
+
+	at := _at(-1)
+	switch callee := node.callee.(type) {
+	case *_nodeIdentifier:
+		at = _at(callee.idx)
+	case *_nodeDotExpression:
+		at = _at(callee.idx)
+	case *_nodeBracketExpression:
+		at = _at(callee.idx)
+	}
+
+	if !vl.IsFunction() {
+		if name == "" {
+			// FIXME Maybe typeof?
+			panic(rt.panicTypeError("%v is not a function", vl, at))
+		}
+		panic(rt.panicTypeError("'%s' is not a function", name, at))
+	}
+
+	self.scope.frame.offset = int(at)
+
+	return vl._object().construct(argumentList)
+}
+
+func (self *_runtime) cmpl_evaluate_nodeObjectLiteral(node *_nodeObjectLiteral) Value {
+
+	result := self.newObject()
+
+	for _, property := range node.value {
+		switch property.kind {
+		case "value":
+			result.defineProperty(property.key, self.cmpl_evaluate_nodeExpression(property.value).resolve(), 0111, false)
+		case "get":
+			getter := self.newNodeFunction(property.value.(*_nodeFunctionLiteral), self.scope.lexical)
+			descriptor := _property{}
+			descriptor.mode = 0211
+			descriptor.value = _propertyGetSet{getter, nil}
+			result.defineOwnProperty(property.key, descriptor, false)
+		case "set":
+			setter := self.newNodeFunction(property.value.(*_nodeFunctionLiteral), self.scope.lexical)
+			descriptor := _property{}
+			descriptor.mode = 0211
+			descriptor.value = _propertyGetSet{nil, setter}
+			result.defineOwnProperty(property.key, descriptor, false)
+		default:
+			panic(fmt.Errorf("Here be dragons: evaluate_nodeObjectLiteral: invalid property.Kind: %v", property.kind))
+		}
+	}
+
+	return toValue_object(result)
+}
+
+func (self *_runtime) cmpl_evaluate_nodeSequenceExpression(node *_nodeSequenceExpression) Value {
+	var result Value
+	for _, node := range node.sequence {
+		result = self.cmpl_evaluate_nodeExpression(node)
+		result = result.resolve()
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeUnaryExpression(node *_nodeUnaryExpression) Value {
+
+	target := self.cmpl_evaluate_nodeExpression(node.operand)
+	switch node.operator {
+	case token.TYPEOF, token.DELETE:
+		if target.kind == valueReference && target.reference().invalid() {
+			if node.operator == token.TYPEOF {
+				return toValue_string("undefined")
+			}
+			return trueValue
+		}
+	}
+
+	switch node.operator {
+	case token.NOT:
+		targetValue := target.resolve()
+		if targetValue.bool() {
+			return falseValue
+		}
+		return trueValue
+	case token.BITWISE_NOT:
+		targetValue := target.resolve()
+		integerValue := toInt32(targetValue)
+		return toValue_int32(^integerValue)
+	case token.PLUS:
+		targetValue := target.resolve()
+		return toValue_float64(targetValue.float64())
+	case token.MINUS:
+		targetValue := target.resolve()
+		value := targetValue.float64()
+		// TODO Test this
+		sign := float64(-1)
+		if math.Signbit(value) {
+			sign = 1
+		}
+		return toValue_float64(math.Copysign(value, sign))
+	case token.INCREMENT:
+		targetValue := target.resolve()
+		if node.postfix {
+			// Postfix++
+			oldValue := targetValue.float64()
+			newValue := toValue_float64(+1 + oldValue)
+			self.putValue(target.reference(), newValue)
+			return toValue_float64(oldValue)
+		} else {
+			// ++Prefix
+			newValue := toValue_float64(+1 + targetValue.float64())
+			self.putValue(target.reference(), newValue)
+			return newValue
+		}
+	case token.DECREMENT:
+		targetValue := target.resolve()
+		if node.postfix {
+			// Postfix--
+			oldValue := targetValue.float64()
+			newValue := toValue_float64(-1 + oldValue)
+			self.putValue(target.reference(), newValue)
+			return toValue_float64(oldValue)
+		} else {
+			// --Prefix
+			newValue := toValue_float64(-1 + targetValue.float64())
+			self.putValue(target.reference(), newValue)
+			return newValue
+		}
+	case token.VOID:
+		target.resolve() // FIXME Side effect?
+		return Value{}
+	case token.DELETE:
+		reference := target.reference()
+		if reference == nil {
+			return trueValue
+		}
+		return toValue_bool(target.reference().delete())
+	case token.TYPEOF:
+		targetValue := target.resolve()
+		switch targetValue.kind {
+		case valueUndefined:
+			return toValue_string("undefined")
+		case valueNull:
+			return toValue_string("object")
+		case valueBoolean:
+			return toValue_string("boolean")
+		case valueNumber:
+			return toValue_string("number")
+		case valueString:
+			return toValue_string("string")
+		case valueObject:
+			if targetValue._object().isCall() {
+				return toValue_string("function")
+			}
+			return toValue_string("object")
+		default:
+			// FIXME ?
+		}
+	}
+
+	panic(hereBeDragons())
+}
+
+func (self *_runtime) cmpl_evaluate_nodeVariableExpression(node *_nodeVariableExpression) Value {
+	if node.initializer != nil {
+		// FIXME If reference is nil
+		left := getIdentifierReference(self, self.scope.lexical, node.name, false, _at(node.idx))
+		right := self.cmpl_evaluate_nodeExpression(node.initializer)
+		rightValue := right.resolve()
+
+		self.putValue(left, rightValue)
+	}
+	return toValue_string(node.name)
+}

vendor/github.com/robertkrimen/otto/cmpl_evaluate_statement.go

@@ -0,0 +1,424 @@
+package otto
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/robertkrimen/otto/token"
+)
+
+func (self *_runtime) cmpl_evaluate_nodeStatement(node _nodeStatement) Value {
+	// Allow interpreter interruption
+	// If the Interrupt channel is nil, then
+	// we avoid runtime.Gosched() overhead (if any)
+	// FIXME: Test this
+	if self.otto.Interrupt != nil {
+		runtime.Gosched()
+		select {
+		case value := <-self.otto.Interrupt:
+			value()
+		default:
+		}
+	}
+
+	switch node := node.(type) {
+
+	case *_nodeBlockStatement:
+		labels := self.labels
+		self.labels = nil
+
+		value := self.cmpl_evaluate_nodeStatementList(node.list)
+		switch value.kind {
+		case valueResult:
+			switch value.evaluateBreak(labels) {
+			case resultBreak:
+				return emptyValue
+			}
+		}
+		return value
+
+	case *_nodeBranchStatement:
+		target := node.label
+		switch node.branch { // FIXME Maybe node.kind? node.operator?
+		case token.BREAK:
+			return toValue(newBreakResult(target))
+		case token.CONTINUE:
+			return toValue(newContinueResult(target))
+		}
+
+	case *_nodeDebuggerStatement:
+		if self.debugger != nil {
+			self.debugger(self.otto)
+		}
+		return emptyValue // Nothing happens.
+
+	case *_nodeDoWhileStatement:
+		return self.cmpl_evaluate_nodeDoWhileStatement(node)
+
+	case *_nodeEmptyStatement:
+		return emptyValue
+
+	case *_nodeExpressionStatement:
+		return self.cmpl_evaluate_nodeExpression(node.expression)
+
+	case *_nodeForInStatement:
+		return self.cmpl_evaluate_nodeForInStatement(node)
+
+	case *_nodeForStatement:
+		return self.cmpl_evaluate_nodeForStatement(node)
+
+	case *_nodeIfStatement:
+		return self.cmpl_evaluate_nodeIfStatement(node)
+
+	case *_nodeLabelledStatement:
+		self.labels = append(self.labels, node.label)
+		defer func() {
+			if len(self.labels) > 0 {
+				self.labels = self.labels[:len(self.labels)-1] // Pop the label
+			} else {
+				self.labels = nil
+			}
+		}()
+		return self.cmpl_evaluate_nodeStatement(node.statement)
+
+	case *_nodeReturnStatement:
+		if node.argument != nil {
+			return toValue(newReturnResult(self.cmpl_evaluate_nodeExpression(node.argument).resolve()))
+		}
+		return toValue(newReturnResult(Value{}))
+
+	case *_nodeSwitchStatement:
+		return self.cmpl_evaluate_nodeSwitchStatement(node)
+
+	case *_nodeThrowStatement:
+		value := self.cmpl_evaluate_nodeExpression(node.argument).resolve()
+		panic(newException(value))
+
+	case *_nodeTryStatement:
+		return self.cmpl_evaluate_nodeTryStatement(node)
+
+	case *_nodeVariableStatement:
+		// Variables are already defined, this is initialization only
+		for _, variable := range node.list {
+			self.cmpl_evaluate_nodeVariableExpression(variable.(*_nodeVariableExpression))
+		}
+		return emptyValue
+
+	case *_nodeWhileStatement:
+		return self.cmpl_evaluate_nodeWhileStatement(node)
+
+	case *_nodeWithStatement:
+		return self.cmpl_evaluate_nodeWithStatement(node)
+
+	}
+
+	panic(fmt.Errorf("Here be dragons: evaluate_nodeStatement(%T)", node))
+}
+
+func (self *_runtime) cmpl_evaluate_nodeStatementList(list []_nodeStatement) Value {
+	var result Value
+	for _, node := range list {
+		value := self.cmpl_evaluate_nodeStatement(node)
+		switch value.kind {
+		case valueResult:
+			return value
+		case valueEmpty:
+		default:
+			// We have getValue here to (for example) trigger a
+			// ReferenceError (of the not defined variety)
+			// Not sure if this is the best way to error out early
+			// for such errors or if there is a better way
+			// TODO Do we still need this?
+			result = value.resolve()
+		}
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeDoWhileStatement(node *_nodeDoWhileStatement) Value {
+
+	labels := append(self.labels, "")
+	self.labels = nil
+
+	test := node.test
+
+	result := emptyValue
+resultBreak:
+	for {
+		for _, node := range node.body {
+			value := self.cmpl_evaluate_nodeStatement(node)
+			switch value.kind {
+			case valueResult:
+				switch value.evaluateBreakContinue(labels) {
+				case resultReturn:
+					return value
+				case resultBreak:
+					break resultBreak
+				case resultContinue:
+					goto resultContinue
+				}
+			case valueEmpty:
+			default:
+				result = value
+			}
+		}
+	resultContinue:
+		if !self.cmpl_evaluate_nodeExpression(test).resolve().bool() {
+			// Stahp: do ... while (false)
+			break
+		}
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeForInStatement(node *_nodeForInStatement) Value {
+
+	labels := append(self.labels, "")
+	self.labels = nil
+
+	source := self.cmpl_evaluate_nodeExpression(node.source)
+	sourceValue := source.resolve()
+
+	switch sourceValue.kind {
+	case valueUndefined, valueNull:
+		return emptyValue
+	}
+
+	sourceObject := self.toObject(sourceValue)
+
+	into := node.into
+	body := node.body
+
+	result := emptyValue
+	object := sourceObject
+	for object != nil {
+		enumerateValue := emptyValue
+		object.enumerate(false, func(name string) bool {
+			into := self.cmpl_evaluate_nodeExpression(into)
+			// In the case of: for (var abc in def) ...
+			if into.reference() == nil {
+				identifier := into.string()
+				// TODO Should be true or false (strictness) depending on context
+				into = toValue(getIdentifierReference(self, self.scope.lexical, identifier, false, -1))
+			}
+			self.putValue(into.reference(), toValue_string(name))
+			for _, node := range body {
+				value := self.cmpl_evaluate_nodeStatement(node)
+				switch value.kind {
+				case valueResult:
+					switch value.evaluateBreakContinue(labels) {
+					case resultReturn:
+						enumerateValue = value
+						return false
+					case resultBreak:
+						object = nil
+						return false
+					case resultContinue:
+						return true
+					}
+				case valueEmpty:
+				default:
+					enumerateValue = value
+				}
+			}
+			return true
+		})
+		if object == nil {
+			break
+		}
+		object = object.prototype
+		if !enumerateValue.isEmpty() {
+			result = enumerateValue
+		}
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeForStatement(node *_nodeForStatement) Value {
+
+	labels := append(self.labels, "")
+	self.labels = nil
+
+	initializer := node.initializer
+	test := node.test
+	update := node.update
+	body := node.body
+
+	if initializer != nil {
+		initialResult := self.cmpl_evaluate_nodeExpression(initializer)
+		initialResult.resolve() // Side-effect trigger
+	}
+
+	result := emptyValue
+resultBreak:
+	for {
+		if test != nil {
+			testResult := self.cmpl_evaluate_nodeExpression(test)
+			testResultValue := testResult.resolve()
+			if testResultValue.bool() == false {
+				break
+			}
+		}
+		for _, node := range body {
+			value := self.cmpl_evaluate_nodeStatement(node)
+			switch value.kind {
+			case valueResult:
+				switch value.evaluateBreakContinue(labels) {
+				case resultReturn:
+					return value
+				case resultBreak:
+					break resultBreak
+				case resultContinue:
+					goto resultContinue
+				}
+			case valueEmpty:
+			default:
+				result = value
+			}
+		}
+	resultContinue:
+		if update != nil {
+			updateResult := self.cmpl_evaluate_nodeExpression(update)
+			updateResult.resolve() // Side-effect trigger
+		}
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeIfStatement(node *_nodeIfStatement) Value {
+	test := self.cmpl_evaluate_nodeExpression(node.test)
+	testValue := test.resolve()
+	if testValue.bool() {
+		return self.cmpl_evaluate_nodeStatement(node.consequent)
+	} else if node.alternate != nil {
+		return self.cmpl_evaluate_nodeStatement(node.alternate)
+	}
+
+	return emptyValue
+}
+
+func (self *_runtime) cmpl_evaluate_nodeSwitchStatement(node *_nodeSwitchStatement) Value {
+
+	labels := append(self.labels, "")
+	self.labels = nil
+
+	discriminantResult := self.cmpl_evaluate_nodeExpression(node.discriminant)
+	target := node.default_
+
+	for index, clause := range node.body {
+		test := clause.test
+		if test != nil {
+			if self.calculateComparison(token.STRICT_EQUAL, discriminantResult, self.cmpl_evaluate_nodeExpression(test)) {
+				target = index
+				break
+			}
+		}
+	}
+
+	result := emptyValue
+	if target != -1 {
+		for _, clause := range node.body[target:] {
+			for _, statement := range clause.consequent {
+				value := self.cmpl_evaluate_nodeStatement(statement)
+				switch value.kind {
+				case valueResult:
+					switch value.evaluateBreak(labels) {
+					case resultReturn:
+						return value
+					case resultBreak:
+						return emptyValue
+					}
+				case valueEmpty:
+				default:
+					result = value
+				}
+			}
+		}
+	}
+
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeTryStatement(node *_nodeTryStatement) Value {
+	tryCatchValue, exception := self.tryCatchEvaluate(func() Value {
+		return self.cmpl_evaluate_nodeStatement(node.body)
+	})
+
+	if exception && node.catch != nil {
+		outer := self.scope.lexical
+		self.scope.lexical = self.newDeclarationStash(outer)
+		defer func() {
+			self.scope.lexical = outer
+		}()
+		// TODO If necessary, convert TypeError<runtime> => TypeError
+		// That, is, such errors can be thrown despite not being JavaScript "native"
+		// strict = false
+		self.scope.lexical.setValue(node.catch.parameter, tryCatchValue, false)
+
+		// FIXME node.CatchParameter
+		// FIXME node.Catch
+		tryCatchValue, exception = self.tryCatchEvaluate(func() Value {
+			return self.cmpl_evaluate_nodeStatement(node.catch.body)
+		})
+	}
+
+	if node.finally != nil {
+		finallyValue := self.cmpl_evaluate_nodeStatement(node.finally)
+		if finallyValue.kind == valueResult {
+			return finallyValue
+		}
+	}
+
+	if exception {
+		panic(newException(tryCatchValue))
+	}
+
+	return tryCatchValue
+}
+
+func (self *_runtime) cmpl_evaluate_nodeWhileStatement(node *_nodeWhileStatement) Value {
+
+	test := node.test
+	body := node.body
+	labels := append(self.labels, "")
+	self.labels = nil
+
+	result := emptyValue
+resultBreakContinue:
+	for {
+		if !self.cmpl_evaluate_nodeExpression(test).resolve().bool() {
+			// Stahp: while (false) ...
+			break
+		}
+		for _, node := range body {
+			value := self.cmpl_evaluate_nodeStatement(node)
+			switch value.kind {
+			case valueResult:
+				switch value.evaluateBreakContinue(labels) {
+				case resultReturn:
+					return value
+				case resultBreak:
+					break resultBreakContinue
+				case resultContinue:
+					continue resultBreakContinue
+				}
+			case valueEmpty:
+			default:
+				result = value
+			}
+		}
+	}
+	return result
+}
+
+func (self *_runtime) cmpl_evaluate_nodeWithStatement(node *_nodeWithStatement) Value {
+	object := self.cmpl_evaluate_nodeExpression(node.object)
+	outer := self.scope.lexical
+	lexical := self.newObjectStash(self.toObject(object.resolve()), outer)
+	self.scope.lexical = lexical
+	defer func() {
+		self.scope.lexical = outer
+	}()
+
+	return self.cmpl_evaluate_nodeStatement(node.body)
+}

vendor/github.com/robertkrimen/otto/cmpl_parse.go

@@ -0,0 +1,656 @@
+package otto
+
+import (
+	"fmt"
+	"regexp"
+
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+)
+
+var trueLiteral = &_nodeLiteral{value: toValue_bool(true)}
+var falseLiteral = &_nodeLiteral{value: toValue_bool(false)}
+var nullLiteral = &_nodeLiteral{value: nullValue}
+var emptyStatement = &_nodeEmptyStatement{}
+
+func (cmpl *_compiler) parseExpression(in ast.Expression) _nodeExpression {
+	if in == nil {
+		return nil
+	}
+
+	switch in := in.(type) {
+
+	case *ast.ArrayLiteral:
+		out := &_nodeArrayLiteral{
+			value: make([]_nodeExpression, len(in.Value)),
+		}
+		for i, value := range in.Value {
+			out.value[i] = cmpl.parseExpression(value)
+		}
+		return out
+
+	case *ast.AssignExpression:
+		return &_nodeAssignExpression{
+			operator: in.Operator,
+			left:     cmpl.parseExpression(in.Left),
+			right:    cmpl.parseExpression(in.Right),
+		}
+
+	case *ast.BinaryExpression:
+		return &_nodeBinaryExpression{
+			operator:   in.Operator,
+			left:       cmpl.parseExpression(in.Left),
+			right:      cmpl.parseExpression(in.Right),
+			comparison: in.Comparison,
+		}
+
+	case *ast.BooleanLiteral:
+		if in.Value {
+			return trueLiteral
+		}
+		return falseLiteral
+
+	case *ast.BracketExpression:
+		return &_nodeBracketExpression{
+			idx:    in.Left.Idx0(),
+			left:   cmpl.parseExpression(in.Left),
+			member: cmpl.parseExpression(in.Member),
+		}
+
+	case *ast.CallExpression:
+		out := &_nodeCallExpression{
+			callee:       cmpl.parseExpression(in.Callee),
+			argumentList: make([]_nodeExpression, len(in.ArgumentList)),
+		}
+		for i, value := range in.ArgumentList {
+			out.argumentList[i] = cmpl.parseExpression(value)
+		}
+		return out
+
+	case *ast.ConditionalExpression:
+		return &_nodeConditionalExpression{
+			test:       cmpl.parseExpression(in.Test),
+			consequent: cmpl.parseExpression(in.Consequent),
+			alternate:  cmpl.parseExpression(in.Alternate),
+		}
+
+	case *ast.DotExpression:
+		return &_nodeDotExpression{
+			idx:        in.Left.Idx0(),
+			left:       cmpl.parseExpression(in.Left),
+			identifier: in.Identifier.Name,
+		}
+
+	case *ast.EmptyExpression:
+		return nil
+
+	case *ast.FunctionLiteral:
+		name := ""
+		if in.Name != nil {
+			name = in.Name.Name
+		}
+		out := &_nodeFunctionLiteral{
+			name:   name,
+			body:   cmpl.parseStatement(in.Body),
+			source: in.Source,
+			file:   cmpl.file,
+		}
+		if in.ParameterList != nil {
+			list := in.ParameterList.List
+			out.parameterList = make([]string, len(list))
+			for i, value := range list {
+				out.parameterList[i] = value.Name
+			}
+		}
+		for _, value := range in.DeclarationList {
+			switch value := value.(type) {
+			case *ast.FunctionDeclaration:
+				out.functionList = append(out.functionList, cmpl.parseExpression(value.Function).(*_nodeFunctionLiteral))
+			case *ast.VariableDeclaration:
+				for _, value := range value.List {
+					out.varList = append(out.varList, value.Name)
+				}
+			default:
+				panic(fmt.Errorf("Here be dragons: parseProgram.declaration(%T)", value))
+			}
+		}
+		return out
+
+	case *ast.Identifier:
+		return &_nodeIdentifier{
+			idx:  in.Idx,
+			name: in.Name,
+		}
+
+	case *ast.NewExpression:
+		out := &_nodeNewExpression{
+			callee:       cmpl.parseExpression(in.Callee),
+			argumentList: make([]_nodeExpression, len(in.ArgumentList)),
+		}
+		for i, value := range in.ArgumentList {
+			out.argumentList[i] = cmpl.parseExpression(value)
+		}
+		return out
+
+	case *ast.NullLiteral:
+		return nullLiteral
+
+	case *ast.NumberLiteral:
+		return &_nodeLiteral{
+			value: toValue(in.Value),
+		}
+
+	case *ast.ObjectLiteral:
+		out := &_nodeObjectLiteral{
+			value: make([]_nodeProperty, len(in.Value)),
+		}
+		for i, value := range in.Value {
+			out.value[i] = _nodeProperty{
+				key:   value.Key,
+				kind:  value.Kind,
+				value: cmpl.parseExpression(value.Value),
+			}
+		}
+		return out
+
+	case *ast.RegExpLiteral:
+		return &_nodeRegExpLiteral{
+			flags:   in.Flags,
+			pattern: in.Pattern,
+		}
+
+	case *ast.SequenceExpression:
+		out := &_nodeSequenceExpression{
+			sequence: make([]_nodeExpression, len(in.Sequence)),
+		}
+		for i, value := range in.Sequence {
+			out.sequence[i] = cmpl.parseExpression(value)
+		}
+		return out
+
+	case *ast.StringLiteral:
+		return &_nodeLiteral{
+			value: toValue_string(in.Value),
+		}
+
+	case *ast.ThisExpression:
+		return &_nodeThisExpression{}
+
+	case *ast.UnaryExpression:
+		return &_nodeUnaryExpression{
+			operator: in.Operator,
+			operand:  cmpl.parseExpression(in.Operand),
+			postfix:  in.Postfix,
+		}
+
+	case *ast.VariableExpression:
+		return &_nodeVariableExpression{
+			idx:         in.Idx0(),
+			name:        in.Name,
+			initializer: cmpl.parseExpression(in.Initializer),
+		}
+
+	}
+
+	panic(fmt.Errorf("Here be dragons: cmpl.parseExpression(%T)", in))
+}
+
+func (cmpl *_compiler) parseStatement(in ast.Statement) _nodeStatement {
+	if in == nil {
+		return nil
+	}
+
+	switch in := in.(type) {
+
+	case *ast.BlockStatement:
+		out := &_nodeBlockStatement{
+			list: make([]_nodeStatement, len(in.List)),
+		}
+		for i, value := range in.List {
+			out.list[i] = cmpl.parseStatement(value)
+		}
+		return out
+
+	case *ast.BranchStatement:
+		out := &_nodeBranchStatement{
+			branch: in.Token,
+		}
+		if in.Label != nil {
+			out.label = in.Label.Name
+		}
+		return out
+
+	case *ast.DebuggerStatement:
+		return &_nodeDebuggerStatement{}
+
+	case *ast.DoWhileStatement:
+		out := &_nodeDoWhileStatement{
+			test: cmpl.parseExpression(in.Test),
+		}
+		body := cmpl.parseStatement(in.Body)
+		if block, ok := body.(*_nodeBlockStatement); ok {
+			out.body = block.list
+		} else {
+			out.body = append(out.body, body)
+		}
+		return out
+
+	case *ast.EmptyStatement:
+		return emptyStatement
+
+	case *ast.ExpressionStatement:
+		return &_nodeExpressionStatement{
+			expression: cmpl.parseExpression(in.Expression),
+		}
+
+	case *ast.ForInStatement:
+		out := &_nodeForInStatement{
+			into:   cmpl.parseExpression(in.Into),
+			source: cmpl.parseExpression(in.Source),
+		}
+		body := cmpl.parseStatement(in.Body)
+		if block, ok := body.(*_nodeBlockStatement); ok {
+			out.body = block.list
+		} else {
+			out.body = append(out.body, body)
+		}
+		return out
+
+	case *ast.ForStatement:
+		out := &_nodeForStatement{
+			initializer: cmpl.parseExpression(in.Initializer),
+			update:      cmpl.parseExpression(in.Update),
+			test:        cmpl.parseExpression(in.Test),
+		}
+		body := cmpl.parseStatement(in.Body)
+		if block, ok := body.(*_nodeBlockStatement); ok {
+			out.body = block.list
+		} else {
+			out.body = append(out.body, body)
+		}
+		return out
+
+	case *ast.FunctionStatement:
+		return emptyStatement
+
+	case *ast.IfStatement:
+		return &_nodeIfStatement{
+			test:       cmpl.parseExpression(in.Test),
+			consequent: cmpl.parseStatement(in.Consequent),
+			alternate:  cmpl.parseStatement(in.Alternate),
+		}
+
+	case *ast.LabelledStatement:
+		return &_nodeLabelledStatement{
+			label:     in.Label.Name,
+			statement: cmpl.parseStatement(in.Statement),
+		}
+
+	case *ast.ReturnStatement:
+		return &_nodeReturnStatement{
+			argument: cmpl.parseExpression(in.Argument),
+		}
+
+	case *ast.SwitchStatement:
+		out := &_nodeSwitchStatement{
+			discriminant: cmpl.parseExpression(in.Discriminant),
+			default_:     in.Default,
+			body:         make([]*_nodeCaseStatement, len(in.Body)),
+		}
+		for i, clause := range in.Body {
+			out.body[i] = &_nodeCaseStatement{
+				test:       cmpl.parseExpression(clause.Test),
+				consequent: make([]_nodeStatement, len(clause.Consequent)),
+			}
+			for j, value := range clause.Consequent {
+				out.body[i].consequent[j] = cmpl.parseStatement(value)
+			}
+		}
+		return out
+
+	case *ast.ThrowStatement:
+		return &_nodeThrowStatement{
+			argument: cmpl.parseExpression(in.Argument),
+		}
+
+	case *ast.TryStatement:
+		out := &_nodeTryStatement{
+			body:    cmpl.parseStatement(in.Body),
+			finally: cmpl.parseStatement(in.Finally),
+		}
+		if in.Catch != nil {
+			out.catch = &_nodeCatchStatement{
+				parameter: in.Catch.Parameter.Name,
+				body:      cmpl.parseStatement(in.Catch.Body),
+			}
+		}
+		return out
+
+	case *ast.VariableStatement:
+		out := &_nodeVariableStatement{
+			list: make([]_nodeExpression, len(in.List)),
+		}
+		for i, value := range in.List {
+			out.list[i] = cmpl.parseExpression(value)
+		}
+		return out
+
+	case *ast.WhileStatement:
+		out := &_nodeWhileStatement{
+			test: cmpl.parseExpression(in.Test),
+		}
+		body := cmpl.parseStatement(in.Body)
+		if block, ok := body.(*_nodeBlockStatement); ok {
+			out.body = block.list
+		} else {
+			out.body = append(out.body, body)
+		}
+		return out
+
+	case *ast.WithStatement:
+		return &_nodeWithStatement{
+			object: cmpl.parseExpression(in.Object),
+			body:   cmpl.parseStatement(in.Body),
+		}
+
+	}
+
+	panic(fmt.Errorf("Here be dragons: cmpl.parseStatement(%T)", in))
+}
+
+func cmpl_parse(in *ast.Program) *_nodeProgram {
+	cmpl := _compiler{
+		program: in,
+	}
+	return cmpl.parse()
+}
+
+func (cmpl *_compiler) _parse(in *ast.Program) *_nodeProgram {
+	out := &_nodeProgram{
+		body: make([]_nodeStatement, len(in.Body)),
+		file: in.File,
+	}
+	for i, value := range in.Body {
+		out.body[i] = cmpl.parseStatement(value)
+	}
+	for _, value := range in.DeclarationList {
+		switch value := value.(type) {
+		case *ast.FunctionDeclaration:
+			out.functionList = append(out.functionList, cmpl.parseExpression(value.Function).(*_nodeFunctionLiteral))
+		case *ast.VariableDeclaration:
+			for _, value := range value.List {
+				out.varList = append(out.varList, value.Name)
+			}
+		default:
+			panic(fmt.Errorf("Here be dragons: cmpl.parseProgram.DeclarationList(%T)", value))
+		}
+	}
+	return out
+}
+
+type _nodeProgram struct {
+	body []_nodeStatement
+
+	varList      []string
+	functionList []*_nodeFunctionLiteral
+
+	variableList []_nodeDeclaration
+
+	file *file.File
+}
+
+type _nodeDeclaration struct {
+	name       string
+	definition _node
+}
+
+type _node interface {
+}
+
+type (
+	_nodeExpression interface {
+		_node
+		_expressionNode()
+	}
+
+	_nodeArrayLiteral struct {
+		value []_nodeExpression
+	}
+
+	_nodeAssignExpression struct {
+		operator token.Token
+		left     _nodeExpression
+		right    _nodeExpression
+	}
+
+	_nodeBinaryExpression struct {
+		operator   token.Token
+		left       _nodeExpression
+		right      _nodeExpression
+		comparison bool
+	}
+
+	_nodeBracketExpression struct {
+		idx    file.Idx
+		left   _nodeExpression
+		member _nodeExpression
+	}
+
+	_nodeCallExpression struct {
+		callee       _nodeExpression
+		argumentList []_nodeExpression
+	}
+
+	_nodeConditionalExpression struct {
+		test       _nodeExpression
+		consequent _nodeExpression
+		alternate  _nodeExpression
+	}
+
+	_nodeDotExpression struct {
+		idx        file.Idx
+		left       _nodeExpression
+		identifier string
+	}
+
+	_nodeFunctionLiteral struct {
+		name          string
+		body          _nodeStatement
+		source        string
+		parameterList []string
+		varList       []string
+		functionList  []*_nodeFunctionLiteral
+		file          *file.File
+	}
+
+	_nodeIdentifier struct {
+		idx  file.Idx
+		name string
+	}
+
+	_nodeLiteral struct {
+		value Value
+	}
+
+	_nodeNewExpression struct {
+		callee       _nodeExpression
+		argumentList []_nodeExpression
+	}
+
+	_nodeObjectLiteral struct {
+		value []_nodeProperty
+	}
+
+	_nodeProperty struct {
+		key   string
+		kind  string
+		value _nodeExpression
+	}
+
+	_nodeRegExpLiteral struct {
+		flags   string
+		pattern string // Value?
+		regexp  *regexp.Regexp
+	}
+
+	_nodeSequenceExpression struct {
+		sequence []_nodeExpression
+	}
+
+	_nodeThisExpression struct {
+	}
+
+	_nodeUnaryExpression struct {
+		operator token.Token
+		operand  _nodeExpression
+		postfix  bool
+	}
+
+	_nodeVariableExpression struct {
+		idx         file.Idx
+		name        string
+		initializer _nodeExpression
+	}
+)
+
+type (
+	_nodeStatement interface {
+		_node
+		_statementNode()
+	}
+
+	_nodeBlockStatement struct {
+		list []_nodeStatement
+	}
+
+	_nodeBranchStatement struct {
+		branch token.Token
+		label  string
+	}
+
+	_nodeCaseStatement struct {
+		test       _nodeExpression
+		consequent []_nodeStatement
+	}
+
+	_nodeCatchStatement struct {
+		parameter string
+		body      _nodeStatement
+	}
+
+	_nodeDebuggerStatement struct {
+	}
+
+	_nodeDoWhileStatement struct {
+		test _nodeExpression
+		body []_nodeStatement
+	}
+
+	_nodeEmptyStatement struct {
+	}
+
+	_nodeExpressionStatement struct {
+		expression _nodeExpression
+	}
+
+	_nodeForInStatement struct {
+		into   _nodeExpression
+		source _nodeExpression
+		body   []_nodeStatement
+	}
+
+	_nodeForStatement struct {
+		initializer _nodeExpression
+		update      _nodeExpression
+		test        _nodeExpression
+		body        []_nodeStatement
+	}
+
+	_nodeIfStatement struct {
+		test       _nodeExpression
+		consequent _nodeStatement
+		alternate  _nodeStatement
+	}
+
+	_nodeLabelledStatement struct {
+		label     string
+		statement _nodeStatement
+	}
+
+	_nodeReturnStatement struct {
+		argument _nodeExpression
+	}
+
+	_nodeSwitchStatement struct {
+		discriminant _nodeExpression
+		default_     int
+		body         []*_nodeCaseStatement
+	}
+
+	_nodeThrowStatement struct {
+		argument _nodeExpression
+	}
+
+	_nodeTryStatement struct {
+		body    _nodeStatement
+		catch   *_nodeCatchStatement
+		finally _nodeStatement
+	}
+
+	_nodeVariableStatement struct {
+		list []_nodeExpression
+	}
+
+	_nodeWhileStatement struct {
+		test _nodeExpression
+		body []_nodeStatement
+	}
+
+	_nodeWithStatement struct {
+		object _nodeExpression
+		body   _nodeStatement
+	}
+)
+
+// _expressionNode
+
+func (*_nodeArrayLiteral) _expressionNode()          {}
+func (*_nodeAssignExpression) _expressionNode()      {}
+func (*_nodeBinaryExpression) _expressionNode()      {}
+func (*_nodeBracketExpression) _expressionNode()     {}
+func (*_nodeCallExpression) _expressionNode()        {}
+func (*_nodeConditionalExpression) _expressionNode() {}
+func (*_nodeDotExpression) _expressionNode()         {}
+func (*_nodeFunctionLiteral) _expressionNode()       {}
+func (*_nodeIdentifier) _expressionNode()            {}
+func (*_nodeLiteral) _expressionNode()               {}
+func (*_nodeNewExpression) _expressionNode()         {}
+func (*_nodeObjectLiteral) _expressionNode()         {}
+func (*_nodeRegExpLiteral) _expressionNode()         {}
+func (*_nodeSequenceExpression) _expressionNode()    {}
+func (*_nodeThisExpression) _expressionNode()        {}
+func (*_nodeUnaryExpression) _expressionNode()       {}
+func (*_nodeVariableExpression) _expressionNode()    {}
+
+// _statementNode
+
+func (*_nodeBlockStatement) _statementNode()      {}
+func (*_nodeBranchStatement) _statementNode()     {}
+func (*_nodeCaseStatement) _statementNode()       {}
+func (*_nodeCatchStatement) _statementNode()      {}
+func (*_nodeDebuggerStatement) _statementNode()   {}
+func (*_nodeDoWhileStatement) _statementNode()    {}
+func (*_nodeEmptyStatement) _statementNode()      {}
+func (*_nodeExpressionStatement) _statementNode() {}
+func (*_nodeForInStatement) _statementNode()      {}
+func (*_nodeForStatement) _statementNode()        {}
+func (*_nodeIfStatement) _statementNode()         {}
+func (*_nodeLabelledStatement) _statementNode()   {}
+func (*_nodeReturnStatement) _statementNode()     {}
+func (*_nodeSwitchStatement) _statementNode()     {}
+func (*_nodeThrowStatement) _statementNode()      {}
+func (*_nodeTryStatement) _statementNode()        {}
+func (*_nodeVariableStatement) _statementNode()   {}
+func (*_nodeWhileStatement) _statementNode()      {}
+func (*_nodeWithStatement) _statementNode()       {}

vendor/github.com/robertkrimen/otto/console.go

@@ -0,0 +1,51 @@
+package otto
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func formatForConsole(argumentList []Value) string {
+	output := []string{}
+	for _, argument := range argumentList {
+		output = append(output, fmt.Sprintf("%v", argument))
+	}
+	return strings.Join(output, " ")
+}
+
+func builtinConsole_log(call FunctionCall) Value {
+	fmt.Fprintln(os.Stdout, formatForConsole(call.ArgumentList))
+	return Value{}
+}
+
+func builtinConsole_error(call FunctionCall) Value {
+	fmt.Fprintln(os.Stdout, formatForConsole(call.ArgumentList))
+	return Value{}
+}
+
+// Nothing happens.
+func builtinConsole_dir(call FunctionCall) Value {
+	return Value{}
+}
+
+func builtinConsole_time(call FunctionCall) Value {
+	return Value{}
+}
+
+func builtinConsole_timeEnd(call FunctionCall) Value {
+	return Value{}
+}
+
+func builtinConsole_trace(call FunctionCall) Value {
+	return Value{}
+}
+
+func builtinConsole_assert(call FunctionCall) Value {
+	return Value{}
+}
+
+func (runtime *_runtime) newConsole() *_object {
+
+	return newConsoleObject(runtime)
+}

vendor/github.com/robertkrimen/otto/consts.go

@@ -0,0 +1,18 @@
+package otto
+
+const (
+	// Common classes.
+	classString   = "String"
+	classGoArray  = "GoArray"
+	classNumber   = "Number"
+	classDate     = "Date"
+	classArray    = "Array"
+	classFunction = "Function"
+	classObject   = "Object"
+	classRegExp   = "RegExp"
+	classBoolean  = "Boolean"
+	classError    = "Error"
+
+	// Common properties.
+	propertyLength = "length"
+)

vendor/github.com/robertkrimen/otto/dbg.go

@@ -0,0 +1,9 @@
+// This file was AUTOMATICALLY GENERATED by dbg-import (smuggol) for github.com/robertkrimen/dbg
+
+package otto
+
+import (
+	Dbg "github.com/robertkrimen/otto/dbg"
+)
+
+var dbg, dbgf = Dbg.New()

vendor/github.com/robertkrimen/otto/dbg/dbg.go

@@ -0,0 +1,387 @@
+// This file was AUTOMATICALLY GENERATED by dbg-import (smuggol) from github.com/robertkrimen/dbg
+
+/*
+Package dbg is a println/printf/log-debugging utility library.
+
+    import (
+        Dbg "github.com/robertkrimen/dbg"
+    )
+
+    dbg, dbgf := Dbg.New()
+
+    dbg("Emit some debug stuff", []byte{120, 121, 122, 122, 121}, math.Pi)
+    # "2013/01/28 16:50:03 Emit some debug stuff [120 121 122 122 121] 3.141592653589793"
+
+    dbgf("With a %s formatting %.2f", "little", math.Pi)
+    # "2013/01/28 16:51:55 With a little formatting (3.14)"
+
+    dbgf("%/fatal//A fatal debug statement: should not be here")
+    # "A fatal debug statement: should not be here"
+    # ...and then, os.Exit(1)
+
+    dbgf("%/panic//Can also panic %s", "this")
+    # "Can also panic this"
+    # ...as a panic, equivalent to: panic("Can also panic this")
+
+    dbgf("Any %s arguments without a corresponding %%", "extra", "are treated like arguments to dbg()")
+    # "2013/01/28 17:14:40 Any extra arguments (without a corresponding %) are treated like arguments to dbg()"
+
+    dbgf("%d %d", 1, 2, 3, 4, 5)
+    # "2013/01/28 17:16:32 Another example: 1 2 3 4 5"
+
+    dbgf("%@: Include the function name for a little context (via %s)", "%@")
+    # "2013... github.com/robertkrimen/dbg.TestSynopsis: Include the function name for a little context (via %@)"
+
+By default, dbg uses log (log.Println, log.Printf, log.Panic, etc.) for output.
+However, you can also provide your own output destination by invoking dbg.New with
+a customization function:
+
+    import (
+        "bytes"
+        Dbg "github.com/robertkrimen/dbg"
+        "os"
+    )
+
+    # dbg to os.Stderr
+    dbg, dbgf := Dbg.New(func(dbgr *Dbgr) {
+        dbgr.SetOutput(os.Stderr)
+    })
+
+    # A slightly contrived example:
+    var buffer bytes.Buffer
+    dbg, dbgf := New(func(dbgr *Dbgr) {
+        dbgr.SetOutput(&buffer)
+    })
+
+*/
+package dbg
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"regexp"
+	"runtime"
+	"strings"
+	"unicode"
+)
+
+type _frmt struct {
+	ctl          string
+	format       string
+	operandCount int
+	panic        bool
+	fatal        bool
+	check        bool
+}
+
+var (
+	ctlTest = regexp.MustCompile(`^\s*%/`)
+	ctlScan = regexp.MustCompile(`%?/(panic|fatal|check)(?:\s|$)`)
+)
+
+func operandCount(format string) int {
+	count := 0
+	end := len(format)
+	for at := 0; at < end; {
+		for at < end && format[at] != '%' {
+			at++
+		}
+		at++
+		if at < end {
+			if format[at] != '%' && format[at] != '@' {
+				count++
+			}
+			at++
+		}
+	}
+	return count
+}
+
+func parseFormat(format string) (frmt _frmt) {
+	if ctlTest.MatchString(format) {
+		format = strings.TrimLeftFunc(format, unicode.IsSpace)
+		index := strings.Index(format, "//")
+		if index != -1 {
+			frmt.ctl = format[0:index]
+			format = format[index+2:] // Skip the second slash via +2 (instead of +1)
+		} else {
+			frmt.ctl = format
+			format = ""
+		}
+		for _, tmp := range ctlScan.FindAllStringSubmatch(frmt.ctl, -1) {
+			for _, value := range tmp[1:] {
+				switch value {
+				case "panic":
+					frmt.panic = true
+				case "fatal":
+					frmt.fatal = true
+				case "check":
+					frmt.check = true
+				}
+			}
+		}
+	}
+	frmt.format = format
+	frmt.operandCount = operandCount(format)
+	return
+}
+
+type Dbgr struct {
+	emit _emit
+}
+
+type DbgFunction func(values ...interface{})
+
+func NewDbgr() *Dbgr {
+	self := &Dbgr{}
+	return self
+}
+
+/*
+New will create and return a pair of debugging functions. You can customize where
+they output to by passing in an (optional) customization function:
+
+    import (
+        Dbg "github.com/robertkrimen/dbg"
+        "os"
+    )
+
+    # dbg to os.Stderr
+    dbg, dbgf := Dbg.New(func(dbgr *Dbgr) {
+        dbgr.SetOutput(os.Stderr)
+    })
+
+*/
+func New(options ...interface{}) (dbg DbgFunction, dbgf DbgFunction) {
+	dbgr := NewDbgr()
+	if len(options) > 0 {
+		if fn, ok := options[0].(func(*Dbgr)); ok {
+			fn(dbgr)
+		}
+	}
+	return dbgr.DbgDbgf()
+}
+
+func (self Dbgr) Dbg(values ...interface{}) {
+	self.getEmit().emit(_frmt{}, "", values...)
+}
+
+func (self Dbgr) Dbgf(values ...interface{}) {
+	self.dbgf(values...)
+}
+
+func (self Dbgr) DbgDbgf() (dbg DbgFunction, dbgf DbgFunction) {
+	dbg = func(vl ...interface{}) {
+		self.Dbg(vl...)
+	}
+	dbgf = func(vl ...interface{}) {
+		self.dbgf(vl...)
+	}
+	return dbg, dbgf // Redundant, but...
+}
+
+func (self Dbgr) dbgf(values ...interface{}) {
+
+	var frmt _frmt
+	if len(values) > 0 {
+		tmp := fmt.Sprint(values[0])
+		frmt = parseFormat(tmp)
+		values = values[1:]
+	}
+
+	buffer_f := bytes.Buffer{}
+	format := frmt.format
+	end := len(format)
+	for at := 0; at < end; {
+		last := at
+		for at < end && format[at] != '%' {
+			at++
+		}
+		if at > last {
+			buffer_f.WriteString(format[last:at])
+		}
+		if at >= end {
+			break
+		}
+		// format[at] == '%'
+		at++
+		// format[at] == ?
+		if format[at] == '@' {
+			depth := 2
+			pc, _, _, _ := runtime.Caller(depth)
+			name := runtime.FuncForPC(pc).Name()
+			buffer_f.WriteString(name)
+		} else {
+			buffer_f.WriteString(format[at-1 : at+1])
+		}
+		at++
+	}
+
+	//values_f := append([]interface{}{}, values[0:frmt.operandCount]...)
+	values_f := values[0:frmt.operandCount]
+	values_dbg := values[frmt.operandCount:]
+	if len(values_dbg) > 0 {
+		// Adjust frmt.format:
+		// (%v instead of %s because: frmt.check)
+		{
+			tmp := format
+			if len(tmp) > 0 {
+				if unicode.IsSpace(rune(tmp[len(tmp)-1])) {
+					buffer_f.WriteString("%v")
+				} else {
+					buffer_f.WriteString(" %v")
+				}
+			} else if frmt.check {
+				// Performing a check, so no output
+			} else {
+				buffer_f.WriteString("%v")
+			}
+		}
+
+		// Adjust values_f:
+		if !frmt.check {
+			tmp := []string{}
+			for _, value := range values_dbg {
+				tmp = append(tmp, fmt.Sprintf("%v", value))
+			}
+			// First, make a copy of values_f, so we avoid overwriting values_dbg when appending
+			values_f = append([]interface{}{}, values_f...)
+			values_f = append(values_f, strings.Join(tmp, " "))
+		}
+	}
+
+	format = buffer_f.String()
+	if frmt.check {
+		// We do not actually emit to the log, but panic if
+		// a non-nil value is detected (e.g. a non-nil error)
+		for _, value := range values_dbg {
+			if value != nil {
+				if format == "" {
+					panic(value)
+				} else {
+					panic(fmt.Sprintf(format, append(values_f, value)...))
+				}
+			}
+		}
+	} else {
+		self.getEmit().emit(frmt, format, values_f...)
+	}
+}
+
+// Idiot-proof &Dbgr{}, etc.
+func (self *Dbgr) getEmit() _emit {
+	if self.emit == nil {
+		self.emit = standardEmit()
+	}
+	return self.emit
+}
+
+// SetOutput will accept the following as a destination for output:
+//
+//      *log.Logger         Print*/Panic*/Fatal* of the logger
+//      io.Writer           -
+//      nil                 Reset to the default output (os.Stderr)
+//      "log"               Print*/Panic*/Fatal* via the "log" package
+//
+func (self *Dbgr) SetOutput(output interface{}) {
+	if output == nil {
+		self.emit = standardEmit()
+		return
+	}
+	switch output := output.(type) {
+	case *log.Logger:
+		self.emit = _emitLogger{
+			logger: output,
+		}
+		return
+	case io.Writer:
+		self.emit = _emitWriter{
+			writer: output,
+		}
+		return
+	case string:
+		if output == "log" {
+			self.emit = _emitLog{}
+			return
+		}
+	}
+	panic(output)
+}
+
+// ======== //
+// = emit = //
+// ======== //
+
+func standardEmit() _emit {
+	return _emitWriter{
+		writer: os.Stderr,
+	}
+}
+
+func ln(tmp string) string {
+	length := len(tmp)
+	if length > 0 && tmp[length-1] != '\n' {
+		return tmp + "\n"
+	}
+	return tmp
+}
+
+type _emit interface {
+	emit(_frmt, string, ...interface{})
+}
+
+type _emitWriter struct {
+	writer io.Writer
+}
+
+func (self _emitWriter) emit(frmt _frmt, format string, values ...interface{}) {
+	if format == "" {
+		fmt.Fprintln(self.writer, values...)
+	} else {
+		if frmt.panic {
+			panic(fmt.Sprintf(format, values...))
+		}
+		fmt.Fprintf(self.writer, ln(format), values...)
+		if frmt.fatal {
+			os.Exit(1)
+		}
+	}
+}
+
+type _emitLogger struct {
+	logger *log.Logger
+}
+
+func (self _emitLogger) emit(frmt _frmt, format string, values ...interface{}) {
+	if format == "" {
+		self.logger.Println(values...)
+	} else {
+		if frmt.panic {
+			self.logger.Panicf(format, values...)
+		} else if frmt.fatal {
+			self.logger.Fatalf(format, values...)
+		} else {
+			self.logger.Printf(format, values...)
+		}
+	}
+}
+
+type _emitLog struct {
+}
+
+func (self _emitLog) emit(frmt _frmt, format string, values ...interface{}) {
+	if format == "" {
+		log.Println(values...)
+	} else {
+		if frmt.panic {
+			log.Panicf(format, values...)
+		} else if frmt.fatal {
+			log.Fatalf(format, values...)
+		} else {
+			log.Printf(format, values...)
+		}
+	}
+}

vendor/github.com/robertkrimen/otto/error.go

@@ -0,0 +1,253 @@
+package otto
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/robertkrimen/otto/file"
+)
+
+type _exception struct {
+	value interface{}
+}
+
+func newException(value interface{}) *_exception {
+	return &_exception{
+		value: value,
+	}
+}
+
+func (self *_exception) eject() interface{} {
+	value := self.value
+	self.value = nil // Prevent Go from holding on to the value, whatever it is
+	return value
+}
+
+type _error struct {
+	name    string
+	message string
+	trace   []_frame
+
+	offset int
+}
+
+func (err _error) format() string {
+	if len(err.name) == 0 {
+		return err.message
+	}
+	if len(err.message) == 0 {
+		return err.name
+	}
+	return fmt.Sprintf("%s: %s", err.name, err.message)
+}
+
+func (err _error) formatWithStack() string {
+	str := err.format() + "\n"
+	for _, frame := range err.trace {
+		str += "    at " + frame.location() + "\n"
+	}
+	return str
+}
+
+type _frame struct {
+	native     bool
+	nativeFile string
+	nativeLine int
+	file       *file.File
+	offset     int
+	callee     string
+	fn         interface{}
+}
+
+var (
+	nativeFrame = _frame{}
+)
+
+type _at int
+
+func (fr _frame) location() string {
+	str := "<unknown>"
+
+	switch {
+	case fr.native:
+		str = "<native code>"
+		if fr.nativeFile != "" && fr.nativeLine != 0 {
+			str = fmt.Sprintf("%s:%d", fr.nativeFile, fr.nativeLine)
+		}
+	case fr.file != nil:
+		if p := fr.file.Position(file.Idx(fr.offset)); p != nil {
+			path, line, column := p.Filename, p.Line, p.Column
+
+			if path == "" {
+				path = "<anonymous>"
+			}
+
+			str = fmt.Sprintf("%s:%d:%d", path, line, column)
+		}
+	}
+
+	if fr.callee != "" {
+		str = fmt.Sprintf("%s (%s)", fr.callee, str)
+	}
+
+	return str
+}
+
+// An Error represents a runtime error, e.g. a TypeError, a ReferenceError, etc.
+type Error struct {
+	_error
+}
+
+// Error returns a description of the error
+//
+//    TypeError: 'def' is not a function
+//
+func (err Error) Error() string {
+	return err.format()
+}
+
+// String returns a description of the error and a trace of where the
+// error occurred.
+//
+//    TypeError: 'def' is not a function
+//        at xyz (<anonymous>:3:9)
+//        at <anonymous>:7:1/
+//
+func (err Error) String() string {
+	return err.formatWithStack()
+}
+
+func (err _error) describe(format string, in ...interface{}) string {
+	return fmt.Sprintf(format, in...)
+}
+
+func (self _error) messageValue() Value {
+	if self.message == "" {
+		return Value{}
+	}
+	return toValue_string(self.message)
+}
+
+func (rt *_runtime) typeErrorResult(throw bool) bool {
+	if throw {
+		panic(rt.panicTypeError())
+	}
+	return false
+}
+
+func newError(rt *_runtime, name string, stackFramesToPop int, in ...interface{}) _error {
+	err := _error{
+		name:   name,
+		offset: -1,
+	}
+	description := ""
+	length := len(in)
+
+	if rt != nil && rt.scope != nil {
+		scope := rt.scope
+
+		for i := 0; i < stackFramesToPop; i++ {
+			if scope.outer != nil {
+				scope = scope.outer
+			}
+		}
+
+		frame := scope.frame
+
+		if length > 0 {
+			if at, ok := in[length-1].(_at); ok {
+				in = in[0 : length-1]
+				if scope != nil {
+					frame.offset = int(at)
+				}
+				length--
+			}
+			if length > 0 {
+				description, in = in[0].(string), in[1:]
+			}
+		}
+
+		limit := rt.traceLimit
+
+		err.trace = append(err.trace, frame)
+		if scope != nil {
+			for scope = scope.outer; scope != nil; scope = scope.outer {
+				if limit--; limit == 0 {
+					break
+				}
+
+				if scope.frame.offset >= 0 {
+					err.trace = append(err.trace, scope.frame)
+				}
+			}
+		}
+	} else {
+		if length > 0 {
+			description, in = in[0].(string), in[1:]
+		}
+	}
+	err.message = err.describe(description, in...)
+
+	return err
+}
+
+func (rt *_runtime) panicTypeError(argumentList ...interface{}) *_exception {
+	return &_exception{
+		value: newError(rt, "TypeError", 0, argumentList...),
+	}
+}
+
+func (rt *_runtime) panicReferenceError(argumentList ...interface{}) *_exception {
+	return &_exception{
+		value: newError(rt, "ReferenceError", 0, argumentList...),
+	}
+}
+
+func (rt *_runtime) panicURIError(argumentList ...interface{}) *_exception {
+	return &_exception{
+		value: newError(rt, "URIError", 0, argumentList...),
+	}
+}
+
+func (rt *_runtime) panicSyntaxError(argumentList ...interface{}) *_exception {
+	return &_exception{
+		value: newError(rt, "SyntaxError", 0, argumentList...),
+	}
+}
+
+func (rt *_runtime) panicRangeError(argumentList ...interface{}) *_exception {
+	return &_exception{
+		value: newError(rt, "RangeError", 0, argumentList...),
+	}
+}
+
+func catchPanic(function func()) (err error) {
+	defer func() {
+		if caught := recover(); caught != nil {
+			if exception, ok := caught.(*_exception); ok {
+				caught = exception.eject()
+			}
+			switch caught := caught.(type) {
+			case *Error:
+				err = caught
+				return
+			case _error:
+				err = &Error{caught}
+				return
+			case Value:
+				if vl := caught._object(); vl != nil {
+					switch vl := vl.value.(type) {
+					case _error:
+						err = &Error{vl}
+						return
+					}
+				}
+				err = errors.New(caught.string())
+				return
+			}
+			panic(caught)
+		}
+	}()
+	function()
+	return nil
+}

vendor/github.com/robertkrimen/otto/evaluate.go

@@ -0,0 +1,298 @@
+package otto
+
+import (
+	"fmt"
+	"math"
+	"strings"
+
+	"github.com/robertkrimen/otto/token"
+)
+
+func (self *_runtime) evaluateMultiply(left float64, right float64) Value {
+	// TODO 11.5.1
+	return Value{}
+}
+
+func (self *_runtime) evaluateDivide(left float64, right float64) Value {
+	if math.IsNaN(left) || math.IsNaN(right) {
+		return NaNValue()
+	}
+	if math.IsInf(left, 0) && math.IsInf(right, 0) {
+		return NaNValue()
+	}
+	if left == 0 && right == 0 {
+		return NaNValue()
+	}
+	if math.IsInf(left, 0) {
+		if math.Signbit(left) == math.Signbit(right) {
+			return positiveInfinityValue()
+		} else {
+			return negativeInfinityValue()
+		}
+	}
+	if math.IsInf(right, 0) {
+		if math.Signbit(left) == math.Signbit(right) {
+			return positiveZeroValue()
+		} else {
+			return negativeZeroValue()
+		}
+	}
+	if right == 0 {
+		if math.Signbit(left) == math.Signbit(right) {
+			return positiveInfinityValue()
+		} else {
+			return negativeInfinityValue()
+		}
+	}
+	return toValue_float64(left / right)
+}
+
+func (self *_runtime) evaluateModulo(left float64, right float64) Value {
+	// TODO 11.5.3
+	return Value{}
+}
+
+func (self *_runtime) calculateBinaryExpression(operator token.Token, left Value, right Value) Value {
+
+	leftValue := left.resolve()
+
+	switch operator {
+
+	// Additive
+	case token.PLUS:
+		leftValue = toPrimitive(leftValue)
+		rightValue := right.resolve()
+		rightValue = toPrimitive(rightValue)
+
+		if leftValue.IsString() || rightValue.IsString() {
+			return toValue_string(strings.Join([]string{leftValue.string(), rightValue.string()}, ""))
+		} else {
+			return toValue_float64(leftValue.float64() + rightValue.float64())
+		}
+	case token.MINUS:
+		rightValue := right.resolve()
+		return toValue_float64(leftValue.float64() - rightValue.float64())
+
+		// Multiplicative
+	case token.MULTIPLY:
+		rightValue := right.resolve()
+		return toValue_float64(leftValue.float64() * rightValue.float64())
+	case token.SLASH:
+		rightValue := right.resolve()
+		return self.evaluateDivide(leftValue.float64(), rightValue.float64())
+	case token.REMAINDER:
+		rightValue := right.resolve()
+		return toValue_float64(math.Mod(leftValue.float64(), rightValue.float64()))
+
+		// Logical
+	case token.LOGICAL_AND:
+		left := leftValue.bool()
+		if !left {
+			return falseValue
+		}
+		return toValue_bool(right.resolve().bool())
+	case token.LOGICAL_OR:
+		left := leftValue.bool()
+		if left {
+			return trueValue
+		}
+		return toValue_bool(right.resolve().bool())
+
+		// Bitwise
+	case token.AND:
+		rightValue := right.resolve()
+		return toValue_int32(toInt32(leftValue) & toInt32(rightValue))
+	case token.OR:
+		rightValue := right.resolve()
+		return toValue_int32(toInt32(leftValue) | toInt32(rightValue))
+	case token.EXCLUSIVE_OR:
+		rightValue := right.resolve()
+		return toValue_int32(toInt32(leftValue) ^ toInt32(rightValue))
+
+		// Shift
+		// (Masking of 0x1f is to restrict the shift to a maximum of 31 places)
+	case token.SHIFT_LEFT:
+		rightValue := right.resolve()
+		return toValue_int32(toInt32(leftValue) << (toUint32(rightValue) & 0x1f))
+	case token.SHIFT_RIGHT:
+		rightValue := right.resolve()
+		return toValue_int32(toInt32(leftValue) >> (toUint32(rightValue) & 0x1f))
+	case token.UNSIGNED_SHIFT_RIGHT:
+		rightValue := right.resolve()
+		// Shifting an unsigned integer is a logical shift
+		return toValue_uint32(toUint32(leftValue) >> (toUint32(rightValue) & 0x1f))
+
+	case token.INSTANCEOF:
+		rightValue := right.resolve()
+		if !rightValue.IsObject() {
+			panic(self.panicTypeError("Expecting a function in instanceof check, but got: %v", rightValue))
+		}
+		return toValue_bool(rightValue._object().hasInstance(leftValue))
+
+	case token.IN:
+		rightValue := right.resolve()
+		if !rightValue.IsObject() {
+			panic(self.panicTypeError())
+		}
+		return toValue_bool(rightValue._object().hasProperty(leftValue.string()))
+	}
+
+	panic(hereBeDragons(operator))
+}
+
+type _lessThanResult int
+
+const (
+	lessThanFalse _lessThanResult = iota
+	lessThanTrue
+	lessThanUndefined
+)
+
+func calculateLessThan(left Value, right Value, leftFirst bool) _lessThanResult {
+	var x, y Value
+	if leftFirst {
+		x = toNumberPrimitive(left)
+		y = toNumberPrimitive(right)
+	} else {
+		y = toNumberPrimitive(right)
+		x = toNumberPrimitive(left)
+	}
+
+	var result bool
+	if x.kind != valueString || y.kind != valueString {
+		x, y := x.float64(), y.float64()
+		if math.IsNaN(x) || math.IsNaN(y) {
+			return lessThanUndefined
+		}
+		result = x < y
+	} else {
+		x, y := x.string(), y.string()
+		result = x < y
+	}
+
+	if result {
+		return lessThanTrue
+	}
+
+	return lessThanFalse
+}
+
+// FIXME Probably a map is not the most efficient way to do this
+var lessThanTable [4](map[_lessThanResult]bool) = [4](map[_lessThanResult]bool){
+	// <
+	map[_lessThanResult]bool{
+		lessThanFalse:     false,
+		lessThanTrue:      true,
+		lessThanUndefined: false,
+	},
+
+	// >
+	map[_lessThanResult]bool{
+		lessThanFalse:     false,
+		lessThanTrue:      true,
+		lessThanUndefined: false,
+	},
+
+	// <=
+	map[_lessThanResult]bool{
+		lessThanFalse:     true,
+		lessThanTrue:      false,
+		lessThanUndefined: false,
+	},
+
+	// >=
+	map[_lessThanResult]bool{
+		lessThanFalse:     true,
+		lessThanTrue:      false,
+		lessThanUndefined: false,
+	},
+}
+
+func (self *_runtime) calculateComparison(comparator token.Token, left Value, right Value) bool {
+
+	// FIXME Use strictEqualityComparison?
+	// TODO This might be redundant now (with regards to evaluateComparison)
+	x := left.resolve()
+	y := right.resolve()
+
+	kindEqualKind := false
+	result := true
+	negate := false
+
+	switch comparator {
+	case token.LESS:
+		result = lessThanTable[0][calculateLessThan(x, y, true)]
+	case token.GREATER:
+		result = lessThanTable[1][calculateLessThan(y, x, false)]
+	case token.LESS_OR_EQUAL:
+		result = lessThanTable[2][calculateLessThan(y, x, false)]
+	case token.GREATER_OR_EQUAL:
+		result = lessThanTable[3][calculateLessThan(x, y, true)]
+	case token.STRICT_NOT_EQUAL:
+		negate = true
+		fallthrough
+	case token.STRICT_EQUAL:
+		if x.kind != y.kind {
+			result = false
+		} else {
+			kindEqualKind = true
+		}
+	case token.NOT_EQUAL:
+		negate = true
+		fallthrough
+	case token.EQUAL:
+		if x.kind == y.kind {
+			kindEqualKind = true
+		} else if x.kind <= valueNull && y.kind <= valueNull {
+			result = true
+		} else if x.kind <= valueNull || y.kind <= valueNull {
+			result = false
+		} else if x.kind <= valueString && y.kind <= valueString {
+			result = x.float64() == y.float64()
+		} else if x.kind == valueBoolean {
+			result = self.calculateComparison(token.EQUAL, toValue_float64(x.float64()), y)
+		} else if y.kind == valueBoolean {
+			result = self.calculateComparison(token.EQUAL, x, toValue_float64(y.float64()))
+		} else if x.kind == valueObject {
+			result = self.calculateComparison(token.EQUAL, toPrimitive(x), y)
+		} else if y.kind == valueObject {
+			result = self.calculateComparison(token.EQUAL, x, toPrimitive(y))
+		} else {
+			panic(hereBeDragons("Unable to test for equality: %v ==? %v", x, y))
+		}
+	default:
+		panic(fmt.Errorf("Unknown comparator %s", comparator.String()))
+	}
+
+	if kindEqualKind {
+		switch x.kind {
+		case valueUndefined, valueNull:
+			result = true
+		case valueNumber:
+			x := x.float64()
+			y := y.float64()
+			if math.IsNaN(x) || math.IsNaN(y) {
+				result = false
+			} else {
+				result = x == y
+			}
+		case valueString:
+			result = x.string() == y.string()
+		case valueBoolean:
+			result = x.bool() == y.bool()
+		case valueObject:
+			result = x._object() == y._object()
+		default:
+			goto ERROR
+		}
+	}
+
+	if negate {
+		result = !result
+	}
+
+	return result
+
+ERROR:
+	panic(hereBeDragons("%v (%v) %s %v (%v)", x, x.kind, comparator, y, y.kind))
+}

vendor/github.com/robertkrimen/otto/file/README.markdown

@@ -0,0 +1,110 @@
+# file
+--
+    import "github.com/robertkrimen/otto/file"
+
+Package file encapsulates the file abstractions used by the ast & parser.
+
+## Usage
+
+#### type File
+
+```go
+type File struct {
+}
+```
+
+
+#### func  NewFile
+
+```go
+func NewFile(filename, src string, base int) *File
+```
+
+#### func (*File) Base
+
+```go
+func (fl *File) Base() int
+```
+
+#### func (*File) Name
+
+```go
+func (fl *File) Name() string
+```
+
+#### func (*File) Source
+
+```go
+func (fl *File) Source() string
+```
+
+#### type FileSet
+
+```go
+type FileSet struct {
+}
+```
+
+A FileSet represents a set of source files.
+
+#### func (*FileSet) AddFile
+
+```go
+func (self *FileSet) AddFile(filename, src string) int
+```
+AddFile adds a new file with the given filename and src.
+
+This an internal method, but exported for cross-package use.
+
+#### func (*FileSet) File
+
+```go
+func (self *FileSet) File(idx Idx) *File
+```
+
+#### func (*FileSet) Position
+
+```go
+func (self *FileSet) Position(idx Idx) *Position
+```
+Position converts an Idx in the FileSet into a Position.
+
+#### type Idx
+
+```go
+type Idx int
+```
+
+Idx is a compact encoding of a source position within a file set. It can be
+converted into a Position for a more convenient, but much larger,
+representation.
+
+#### type Position
+
+```go
+type Position struct {
+	Filename string // The filename where the error occurred, if any
+	Offset   int    // The src offset
+	Line     int    // The line number, starting at 1
+	Column   int    // The column number, starting at 1 (The character count)
+
+}
+```
+
+Position describes an arbitrary source position including the filename, line,
+and column location.
+
+#### func (*Position) String
+
+```go
+func (self *Position) String() string
+```
+String returns a string in one of several forms:
+
+    file:line:column    A valid position with filename
+    line:column         A valid position without filename
+    file                An invalid position with filename
+    -                   An invalid position without filename
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/file/file.go

@@ -0,0 +1,164 @@
+// Package file encapsulates the file abstractions used by the ast & parser.
+//
+package file
+
+import (
+	"fmt"
+	"strings"
+
+	"gopkg.in/sourcemap.v1"
+)
+
+// Idx is a compact encoding of a source position within a file set.
+// It can be converted into a Position for a more convenient, but much
+// larger, representation.
+type Idx int
+
+// Position describes an arbitrary source position
+// including the filename, line, and column location.
+type Position struct {
+	Filename string // The filename where the error occurred, if any
+	Offset   int    // The src offset
+	Line     int    // The line number, starting at 1
+	Column   int    // The column number, starting at 1 (The character count)
+
+}
+
+// A Position is valid if the line number is > 0.
+
+func (self *Position) isValid() bool {
+	return self.Line > 0
+}
+
+// String returns a string in one of several forms:
+//
+//	file:line:column    A valid position with filename
+//	line:column         A valid position without filename
+//	file                An invalid position with filename
+//	-                   An invalid position without filename
+//
+func (self *Position) String() string {
+	str := self.Filename
+	if self.isValid() {
+		if str != "" {
+			str += ":"
+		}
+		str += fmt.Sprintf("%d:%d", self.Line, self.Column)
+	}
+	if str == "" {
+		str = "-"
+	}
+	return str
+}
+
+// FileSet
+
+// A FileSet represents a set of source files.
+type FileSet struct {
+	files []*File
+	last  *File
+}
+
+// AddFile adds a new file with the given filename and src.
+//
+// This an internal method, but exported for cross-package use.
+func (self *FileSet) AddFile(filename, src string) int {
+	base := self.nextBase()
+	file := &File{
+		name: filename,
+		src:  src,
+		base: base,
+	}
+	self.files = append(self.files, file)
+	self.last = file
+	return base
+}
+
+func (self *FileSet) nextBase() int {
+	if self.last == nil {
+		return 1
+	}
+	return self.last.base + len(self.last.src) + 1
+}
+
+func (self *FileSet) File(idx Idx) *File {
+	for _, file := range self.files {
+		if idx <= Idx(file.base+len(file.src)) {
+			return file
+		}
+	}
+	return nil
+}
+
+// Position converts an Idx in the FileSet into a Position.
+func (self *FileSet) Position(idx Idx) *Position {
+	for _, file := range self.files {
+		if idx <= Idx(file.base+len(file.src)) {
+			return file.Position(idx - Idx(file.base))
+		}
+	}
+
+	return nil
+}
+
+type File struct {
+	name string
+	src  string
+	base int // This will always be 1 or greater
+	sm   *sourcemap.Consumer
+}
+
+func NewFile(filename, src string, base int) *File {
+	return &File{
+		name: filename,
+		src:  src,
+		base: base,
+	}
+}
+
+func (fl *File) WithSourceMap(sm *sourcemap.Consumer) *File {
+	fl.sm = sm
+	return fl
+}
+
+func (fl *File) Name() string {
+	return fl.name
+}
+
+func (fl *File) Source() string {
+	return fl.src
+}
+
+func (fl *File) Base() int {
+	return fl.base
+}
+
+func (fl *File) Position(idx Idx) *Position {
+	position := &Position{}
+
+	offset := int(idx) - fl.base
+
+	if offset >= len(fl.src) || offset < 0 {
+		return nil
+	}
+
+	src := fl.src[:offset]
+
+	position.Filename = fl.name
+	position.Offset = offset
+	position.Line = strings.Count(src, "\n") + 1
+
+	if index := strings.LastIndex(src, "\n"); index >= 0 {
+		position.Column = offset - index
+	} else {
+		position.Column = len(src) + 1
+	}
+
+	if fl.sm != nil {
+		if f, _, l, c, ok := fl.sm.Source(position.Line, position.Column); ok {
+			position.Filename, position.Line, position.Column = f, l, c
+		}
+	}
+
+	return position
+}

vendor/github.com/robertkrimen/otto/global.go

@@ -0,0 +1,221 @@
+package otto
+
+import (
+	"strconv"
+	"time"
+)
+
+var (
+	prototypeValueObject   = interface{}(nil)
+	prototypeValueFunction = _nativeFunctionObject{
+		call: func(_ FunctionCall) Value {
+			return Value{}
+		},
+	}
+	prototypeValueString = _stringASCII("")
+	// TODO Make this just false?
+	prototypeValueBoolean = Value{
+		kind:  valueBoolean,
+		value: false,
+	}
+	prototypeValueNumber = Value{
+		kind:  valueNumber,
+		value: 0,
+	}
+	prototypeValueDate = _dateObject{
+		epoch: 0,
+		isNaN: false,
+		time:  time.Unix(0, 0).UTC(),
+		value: Value{
+			kind:  valueNumber,
+			value: 0,
+		},
+	}
+	prototypeValueRegExp = _regExpObject{
+		regularExpression: nil,
+		global:            false,
+		ignoreCase:        false,
+		multiline:         false,
+		source:            "",
+		flags:             "",
+	}
+)
+
+func newContext() *_runtime {
+
+	self := &_runtime{}
+
+	self.globalStash = self.newObjectStash(nil, nil)
+	self.globalObject = self.globalStash.object
+
+	_newContext(self)
+
+	self.eval = self.globalObject.property["eval"].value.(Value).value.(*_object)
+	self.globalObject.prototype = self.global.ObjectPrototype
+
+	return self
+}
+
+func (runtime *_runtime) newBaseObject() *_object {
+	self := newObject(runtime, "")
+	return self
+}
+
+func (runtime *_runtime) newClassObject(class string) *_object {
+	return newObject(runtime, class)
+}
+
+func (runtime *_runtime) newPrimitiveObject(class string, value Value) *_object {
+	self := runtime.newClassObject(class)
+	self.value = value
+	return self
+}
+
+func (self *_object) primitiveValue() Value {
+	switch value := self.value.(type) {
+	case Value:
+		return value
+	case _stringObject:
+		return toValue_string(value.String())
+	}
+	return Value{}
+}
+
+func (self *_object) hasPrimitive() bool {
+	switch self.value.(type) {
+	case Value, _stringObject:
+		return true
+	}
+	return false
+}
+
+func (runtime *_runtime) newObject() *_object {
+	self := runtime.newClassObject(classObject)
+	self.prototype = runtime.global.ObjectPrototype
+	return self
+}
+
+func (runtime *_runtime) newArray(length uint32) *_object {
+	self := runtime.newArrayObject(length)
+	self.prototype = runtime.global.ArrayPrototype
+	return self
+}
+
+func (runtime *_runtime) newArrayOf(valueArray []Value) *_object {
+	self := runtime.newArray(uint32(len(valueArray)))
+	for index, value := range valueArray {
+		if value.isEmpty() {
+			continue
+		}
+		self.defineProperty(strconv.FormatInt(int64(index), 10), value, 0111, false)
+	}
+	return self
+}
+
+func (runtime *_runtime) newString(value Value) *_object {
+	self := runtime.newStringObject(value)
+	self.prototype = runtime.global.StringPrototype
+	return self
+}
+
+func (runtime *_runtime) newBoolean(value Value) *_object {
+	self := runtime.newBooleanObject(value)
+	self.prototype = runtime.global.BooleanPrototype
+	return self
+}
+
+func (runtime *_runtime) newNumber(value Value) *_object {
+	self := runtime.newNumberObject(value)
+	self.prototype = runtime.global.NumberPrototype
+	return self
+}
+
+func (runtime *_runtime) newRegExp(patternValue Value, flagsValue Value) *_object {
+
+	pattern := ""
+	flags := ""
+	if object := patternValue._object(); object != nil && object.class == classRegExp {
+		if flagsValue.IsDefined() {
+			panic(runtime.panicTypeError("Cannot supply flags when constructing one RegExp from another"))
+		}
+		regExp := object.regExpValue()
+		pattern = regExp.source
+		flags = regExp.flags
+	} else {
+		if patternValue.IsDefined() {
+			pattern = patternValue.string()
+		}
+		if flagsValue.IsDefined() {
+			flags = flagsValue.string()
+		}
+	}
+
+	return runtime._newRegExp(pattern, flags)
+}
+
+func (runtime *_runtime) _newRegExp(pattern string, flags string) *_object {
+	self := runtime.newRegExpObject(pattern, flags)
+	self.prototype = runtime.global.RegExpPrototype
+	return self
+}
+
+// TODO Should (probably) be one argument, right? This is redundant
+func (runtime *_runtime) newDate(epoch float64) *_object {
+	self := runtime.newDateObject(epoch)
+	self.prototype = runtime.global.DatePrototype
+	return self
+}
+
+func (runtime *_runtime) newError(name string, message Value, stackFramesToPop int) *_object {
+	var self *_object
+	switch name {
+	case "EvalError":
+		return runtime.newEvalError(message)
+	case "TypeError":
+		return runtime.newTypeError(message)
+	case "RangeError":
+		return runtime.newRangeError(message)
+	case "ReferenceError":
+		return runtime.newReferenceError(message)
+	case "SyntaxError":
+		return runtime.newSyntaxError(message)
+	case "URIError":
+		return runtime.newURIError(message)
+	}
+
+	self = runtime.newErrorObject(name, message, stackFramesToPop)
+	self.prototype = runtime.global.ErrorPrototype
+	if name != "" {
+		self.defineProperty("name", toValue_string(name), 0111, false)
+	}
+	return self
+}
+
+func (runtime *_runtime) newNativeFunction(name, file string, line int, _nativeFunction _nativeFunction) *_object {
+	self := runtime.newNativeFunctionObject(name, file, line, _nativeFunction, 0)
+	self.prototype = runtime.global.FunctionPrototype
+	prototype := runtime.newObject()
+	self.defineProperty("prototype", toValue_object(prototype), 0100, false)
+	prototype.defineProperty("constructor", toValue_object(self), 0100, false)
+	return self
+}
+
+func (runtime *_runtime) newNodeFunction(node *_nodeFunctionLiteral, scopeEnvironment _stash) *_object {
+	// TODO Implement 13.2 fully
+	self := runtime.newNodeFunctionObject(node, scopeEnvironment)
+	self.prototype = runtime.global.FunctionPrototype
+	prototype := runtime.newObject()
+	self.defineProperty("prototype", toValue_object(prototype), 0100, false)
+	prototype.defineProperty("constructor", toValue_object(self), 0101, false)
+	return self
+}
+
+// FIXME Only in one place...
+func (runtime *_runtime) newBoundFunction(target *_object, this Value, argumentList []Value) *_object {
+	self := runtime.newBoundFunctionObject(target, this, argumentList)
+	self.prototype = runtime.global.FunctionPrototype
+	prototype := runtime.newObject()
+	self.defineProperty("prototype", toValue_object(prototype), 0100, false)
+	prototype.defineProperty("constructor", toValue_object(self), 0100, false)
+	return self
+}

vendor/github.com/robertkrimen/otto/go.mod

@@ -0,0 +1,11 @@
+module github.com/robertkrimen/otto
+
+go 1.14
+
+require (
+	github.com/chzyer/logex v1.1.10 // indirect
+	github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 // indirect
+	github.com/stretchr/testify v1.7.0 // indirect
+	gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375
+	gopkg.in/sourcemap.v1 v1.0.5
+)

vendor/github.com/robertkrimen/otto/go.sum

@@ -0,0 +1,18 @@
+github.com/chzyer/logex v1.1.10 h1:Swpa1K6QvQznwJRcfTfQJmTE72DqScAa40E+fbHEXEE=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWsoZXJNW3xEE4JJyHa5Q25/sd8=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375 h1:hPki/oSSWOLiI9Gc9jyIoj33O3j29fUc9PlLha2yDj0=
+gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375/go.mod h1:lNEQeAhU009zbRxng+XOj5ITVgY24WcbNnQopyfKoYQ=
+gopkg.in/sourcemap.v1 v1.0.5 h1:inv58fC9f9J3TK2Y2R1NPntXEn3/wjWHkonhIUODNTI=
+gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

vendor/github.com/robertkrimen/otto/inline.go

@@ -0,0 +1,6638 @@
+package otto
+
+import (
+	"math"
+)
+
+func _newContext(runtime *_runtime) {
+	{
+		runtime.global.ObjectPrototype = &_object{
+			runtime:     runtime,
+			class:       classObject,
+			objectClass: _classObject,
+			prototype:   nil,
+			extensible:  true,
+			value:       prototypeValueObject,
+		}
+	}
+	{
+		runtime.global.FunctionPrototype = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueFunction,
+		}
+	}
+	{
+		valueOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "valueOf",
+				call: builtinObject_valueOf,
+			},
+		}
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinObject_toString,
+			},
+		}
+		toLocaleString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleString",
+				call: builtinObject_toLocaleString,
+			},
+		}
+		hasOwnProperty_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "hasOwnProperty",
+				call: builtinObject_hasOwnProperty,
+			},
+		}
+		isPrototypeOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isPrototypeOf",
+				call: builtinObject_isPrototypeOf,
+			},
+		}
+		propertyIsEnumerable_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "propertyIsEnumerable",
+				call: builtinObject_propertyIsEnumerable,
+			},
+		}
+		runtime.global.ObjectPrototype.property = map[string]_property{
+			"valueOf": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: valueOf_function,
+				},
+			},
+			"toString": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: toString_function,
+				},
+			},
+			"toLocaleString": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: toLocaleString_function,
+				},
+			},
+			"hasOwnProperty": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: hasOwnProperty_function,
+				},
+			},
+			"isPrototypeOf": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: isPrototypeOf_function,
+				},
+			},
+			"propertyIsEnumerable": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: propertyIsEnumerable_function,
+				},
+			},
+			"constructor": _property{
+				mode:  0101,
+				value: Value{},
+			},
+		}
+		runtime.global.ObjectPrototype.propertyOrder = []string{
+			"valueOf",
+			"toString",
+			"toLocaleString",
+			"hasOwnProperty",
+			"isPrototypeOf",
+			"propertyIsEnumerable",
+			"constructor",
+		}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinFunction_toString,
+			},
+		}
+		apply_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "apply",
+				call: builtinFunction_apply,
+			},
+		}
+		call_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "call",
+				call: builtinFunction_call,
+			},
+		}
+		bind_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "bind",
+				call: builtinFunction_bind,
+			},
+		}
+		runtime.global.FunctionPrototype.property = map[string]_property{
+			"toString": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: toString_function,
+				},
+			},
+			"apply": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: apply_function,
+				},
+			},
+			"call": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: call_function,
+				},
+			},
+			"bind": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: bind_function,
+				},
+			},
+			"constructor": _property{
+				mode:  0101,
+				value: Value{},
+			},
+			propertyLength: _property{
+				mode: 0,
+				value: Value{
+					kind:  valueNumber,
+					value: 0,
+				},
+			},
+		}
+		runtime.global.FunctionPrototype.propertyOrder = []string{
+			"toString",
+			"apply",
+			"call",
+			"bind",
+			"constructor",
+			propertyLength,
+		}
+	}
+	{
+		getPrototypeOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getPrototypeOf",
+				call: builtinObject_getPrototypeOf,
+			},
+		}
+		getOwnPropertyDescriptor_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getOwnPropertyDescriptor",
+				call: builtinObject_getOwnPropertyDescriptor,
+			},
+		}
+		defineProperty_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "defineProperty",
+				call: builtinObject_defineProperty,
+			},
+		}
+		defineProperties_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "defineProperties",
+				call: builtinObject_defineProperties,
+			},
+		}
+		create_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "create",
+				call: builtinObject_create,
+			},
+		}
+		isExtensible_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isExtensible",
+				call: builtinObject_isExtensible,
+			},
+		}
+		preventExtensions_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "preventExtensions",
+				call: builtinObject_preventExtensions,
+			},
+		}
+		isSealed_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isSealed",
+				call: builtinObject_isSealed,
+			},
+		}
+		seal_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "seal",
+				call: builtinObject_seal,
+			},
+		}
+		isFrozen_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isFrozen",
+				call: builtinObject_isFrozen,
+			},
+		}
+		freeze_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "freeze",
+				call: builtinObject_freeze,
+			},
+		}
+		keys_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "keys",
+				call: builtinObject_keys,
+			},
+		}
+		getOwnPropertyNames_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getOwnPropertyNames",
+				call: builtinObject_getOwnPropertyNames,
+			},
+		}
+		runtime.global.Object = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classObject,
+				call:      builtinObject,
+				construct: builtinNewObject,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.ObjectPrototype,
+					},
+				},
+				"getPrototypeOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getPrototypeOf_function,
+					},
+				},
+				"getOwnPropertyDescriptor": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getOwnPropertyDescriptor_function,
+					},
+				},
+				"defineProperty": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: defineProperty_function,
+					},
+				},
+				"defineProperties": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: defineProperties_function,
+					},
+				},
+				"create": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: create_function,
+					},
+				},
+				"isExtensible": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: isExtensible_function,
+					},
+				},
+				"preventExtensions": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: preventExtensions_function,
+					},
+				},
+				"isSealed": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: isSealed_function,
+					},
+				},
+				"seal": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: seal_function,
+					},
+				},
+				"isFrozen": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: isFrozen_function,
+					},
+				},
+				"freeze": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: freeze_function,
+					},
+				},
+				"keys": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: keys_function,
+					},
+				},
+				"getOwnPropertyNames": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getOwnPropertyNames_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+				"getPrototypeOf",
+				"getOwnPropertyDescriptor",
+				"defineProperty",
+				"defineProperties",
+				"create",
+				"isExtensible",
+				"preventExtensions",
+				"isSealed",
+				"seal",
+				"isFrozen",
+				"freeze",
+				"keys",
+				"getOwnPropertyNames",
+			},
+		}
+		runtime.global.ObjectPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Object,
+				},
+			}
+	}
+	{
+		Function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classFunction,
+				call:      builtinFunction,
+				construct: builtinNewFunction,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.FunctionPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.Function = Function
+		runtime.global.FunctionPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Function,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinArray_toString,
+			},
+		}
+		toLocaleString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleString",
+				call: builtinArray_toLocaleString,
+			},
+		}
+		concat_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "concat",
+				call: builtinArray_concat,
+			},
+		}
+		join_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "join",
+				call: builtinArray_join,
+			},
+		}
+		splice_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "splice",
+				call: builtinArray_splice,
+			},
+		}
+		shift_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "shift",
+				call: builtinArray_shift,
+			},
+		}
+		pop_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "pop",
+				call: builtinArray_pop,
+			},
+		}
+		push_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "push",
+				call: builtinArray_push,
+			},
+		}
+		slice_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "slice",
+				call: builtinArray_slice,
+			},
+		}
+		unshift_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "unshift",
+				call: builtinArray_unshift,
+			},
+		}
+		reverse_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "reverse",
+				call: builtinArray_reverse,
+			},
+		}
+		sort_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "sort",
+				call: builtinArray_sort,
+			},
+		}
+		indexOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "indexOf",
+				call: builtinArray_indexOf,
+			},
+		}
+		lastIndexOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "lastIndexOf",
+				call: builtinArray_lastIndexOf,
+			},
+		}
+		every_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "every",
+				call: builtinArray_every,
+			},
+		}
+		some_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "some",
+				call: builtinArray_some,
+			},
+		}
+		forEach_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "forEach",
+				call: builtinArray_forEach,
+			},
+		}
+		map_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "map",
+				call: builtinArray_map,
+			},
+		}
+		filter_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "filter",
+				call: builtinArray_filter,
+			},
+		}
+		reduce_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "reduce",
+				call: builtinArray_reduce,
+			},
+		}
+		reduceRight_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "reduceRight",
+				call: builtinArray_reduceRight,
+			},
+		}
+		isArray_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isArray",
+				call: builtinArray_isArray,
+			},
+		}
+		runtime.global.ArrayPrototype = &_object{
+			runtime:     runtime,
+			class:       classArray,
+			objectClass: _classArray,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0100,
+					value: Value{
+						kind:  valueNumber,
+						value: uint32(0),
+					},
+				},
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"toLocaleString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleString_function,
+					},
+				},
+				"concat": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: concat_function,
+					},
+				},
+				"join": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: join_function,
+					},
+				},
+				"splice": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: splice_function,
+					},
+				},
+				"shift": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: shift_function,
+					},
+				},
+				"pop": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: pop_function,
+					},
+				},
+				"push": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: push_function,
+					},
+				},
+				"slice": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: slice_function,
+					},
+				},
+				"unshift": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: unshift_function,
+					},
+				},
+				"reverse": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: reverse_function,
+					},
+				},
+				"sort": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: sort_function,
+					},
+				},
+				"indexOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: indexOf_function,
+					},
+				},
+				"lastIndexOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: lastIndexOf_function,
+					},
+				},
+				"every": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: every_function,
+					},
+				},
+				"some": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: some_function,
+					},
+				},
+				"forEach": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: forEach_function,
+					},
+				},
+				"map": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: map_function,
+					},
+				},
+				"filter": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: filter_function,
+					},
+				},
+				"reduce": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: reduce_function,
+					},
+				},
+				"reduceRight": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: reduceRight_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"toString",
+				"toLocaleString",
+				"concat",
+				"join",
+				"splice",
+				"shift",
+				"pop",
+				"push",
+				"slice",
+				"unshift",
+				"reverse",
+				"sort",
+				"indexOf",
+				"lastIndexOf",
+				"every",
+				"some",
+				"forEach",
+				"map",
+				"filter",
+				"reduce",
+				"reduceRight",
+			},
+		}
+		runtime.global.Array = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classArray,
+				call:      builtinArray,
+				construct: builtinNewArray,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.ArrayPrototype,
+					},
+				},
+				"isArray": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: isArray_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+				"isArray",
+			},
+		}
+		runtime.global.ArrayPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Array,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinString_toString,
+			},
+		}
+		valueOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "valueOf",
+				call: builtinString_valueOf,
+			},
+		}
+		charAt_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "charAt",
+				call: builtinString_charAt,
+			},
+		}
+		charCodeAt_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "charCodeAt",
+				call: builtinString_charCodeAt,
+			},
+		}
+		concat_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "concat",
+				call: builtinString_concat,
+			},
+		}
+		indexOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "indexOf",
+				call: builtinString_indexOf,
+			},
+		}
+		lastIndexOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "lastIndexOf",
+				call: builtinString_lastIndexOf,
+			},
+		}
+		match_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "match",
+				call: builtinString_match,
+			},
+		}
+		replace_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "replace",
+				call: builtinString_replace,
+			},
+		}
+		search_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "search",
+				call: builtinString_search,
+			},
+		}
+		split_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "split",
+				call: builtinString_split,
+			},
+		}
+		slice_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "slice",
+				call: builtinString_slice,
+			},
+		}
+		substring_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "substring",
+				call: builtinString_substring,
+			},
+		}
+		toLowerCase_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLowerCase",
+				call: builtinString_toLowerCase,
+			},
+		}
+		toUpperCase_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toUpperCase",
+				call: builtinString_toUpperCase,
+			},
+		}
+		substr_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "substr",
+				call: builtinString_substr,
+			},
+		}
+		trim_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "trim",
+				call: builtinString_trim,
+			},
+		}
+		trimLeft_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "trimLeft",
+				call: builtinString_trimLeft,
+			},
+		}
+		trimRight_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "trimRight",
+				call: builtinString_trimRight,
+			},
+		}
+		localeCompare_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "localeCompare",
+				call: builtinString_localeCompare,
+			},
+		}
+		toLocaleLowerCase_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleLowerCase",
+				call: builtinString_toLocaleLowerCase,
+			},
+		}
+		toLocaleUpperCase_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleUpperCase",
+				call: builtinString_toLocaleUpperCase,
+			},
+		}
+		fromCharCode_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "fromCharCode",
+				call: builtinString_fromCharCode,
+			},
+		}
+		runtime.global.StringPrototype = &_object{
+			runtime:     runtime,
+			class:       classString,
+			objectClass: _classString,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueString,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: int(0),
+					},
+				},
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"valueOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: valueOf_function,
+					},
+				},
+				"charAt": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: charAt_function,
+					},
+				},
+				"charCodeAt": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: charCodeAt_function,
+					},
+				},
+				"concat": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: concat_function,
+					},
+				},
+				"indexOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: indexOf_function,
+					},
+				},
+				"lastIndexOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: lastIndexOf_function,
+					},
+				},
+				"match": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: match_function,
+					},
+				},
+				"replace": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: replace_function,
+					},
+				},
+				"search": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: search_function,
+					},
+				},
+				"split": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: split_function,
+					},
+				},
+				"slice": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: slice_function,
+					},
+				},
+				"substring": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: substring_function,
+					},
+				},
+				"toLowerCase": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLowerCase_function,
+					},
+				},
+				"toUpperCase": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toUpperCase_function,
+					},
+				},
+				"substr": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: substr_function,
+					},
+				},
+				"trim": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: trim_function,
+					},
+				},
+				"trimLeft": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: trimLeft_function,
+					},
+				},
+				"trimRight": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: trimRight_function,
+					},
+				},
+				"localeCompare": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: localeCompare_function,
+					},
+				},
+				"toLocaleLowerCase": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleLowerCase_function,
+					},
+				},
+				"toLocaleUpperCase": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleUpperCase_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"toString",
+				"valueOf",
+				"charAt",
+				"charCodeAt",
+				"concat",
+				"indexOf",
+				"lastIndexOf",
+				"match",
+				"replace",
+				"search",
+				"split",
+				"slice",
+				"substring",
+				"toLowerCase",
+				"toUpperCase",
+				"substr",
+				"trim",
+				"trimLeft",
+				"trimRight",
+				"localeCompare",
+				"toLocaleLowerCase",
+				"toLocaleUpperCase",
+			},
+		}
+		runtime.global.String = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classString,
+				call:      builtinString,
+				construct: builtinNewString,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.StringPrototype,
+					},
+				},
+				"fromCharCode": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: fromCharCode_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+				"fromCharCode",
+			},
+		}
+		runtime.global.StringPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.String,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinBoolean_toString,
+			},
+		}
+		valueOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "valueOf",
+				call: builtinBoolean_valueOf,
+			},
+		}
+		runtime.global.BooleanPrototype = &_object{
+			runtime:     runtime,
+			class:       classBoolean,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueBoolean,
+			property: map[string]_property{
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"valueOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: valueOf_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"toString",
+				"valueOf",
+			},
+		}
+		runtime.global.Boolean = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classBoolean,
+				call:      builtinBoolean,
+				construct: builtinNewBoolean,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.BooleanPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.BooleanPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Boolean,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinNumber_toString,
+			},
+		}
+		valueOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "valueOf",
+				call: builtinNumber_valueOf,
+			},
+		}
+		toFixed_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toFixed",
+				call: builtinNumber_toFixed,
+			},
+		}
+		toExponential_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toExponential",
+				call: builtinNumber_toExponential,
+			},
+		}
+		toPrecision_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toPrecision",
+				call: builtinNumber_toPrecision,
+			},
+		}
+		toLocaleString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleString",
+				call: builtinNumber_toLocaleString,
+			},
+		}
+		isNaN_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isNaN",
+				call: builtinNumber_isNaN,
+			},
+		}
+		runtime.global.NumberPrototype = &_object{
+			runtime:     runtime,
+			class:       classNumber,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueNumber,
+			property: map[string]_property{
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"valueOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: valueOf_function,
+					},
+				},
+				"toFixed": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toFixed_function,
+					},
+				},
+				"toExponential": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toExponential_function,
+					},
+				},
+				"toPrecision": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toPrecision_function,
+					},
+				},
+				"toLocaleString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleString_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"toString",
+				"valueOf",
+				"toFixed",
+				"toExponential",
+				"toPrecision",
+				"toLocaleString",
+			},
+		}
+		runtime.global.Number = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classNumber,
+				call:      builtinNumber,
+				construct: builtinNewNumber,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.NumberPrototype,
+					},
+				},
+				"isNaN": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: isNaN_function,
+					},
+				},
+				"MAX_VALUE": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.MaxFloat64,
+					},
+				},
+				"MIN_VALUE": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.SmallestNonzeroFloat64,
+					},
+				},
+				"NaN": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.NaN(),
+					},
+				},
+				"NEGATIVE_INFINITY": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Inf(-1),
+					},
+				},
+				"POSITIVE_INFINITY": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Inf(+1),
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+				"isNaN",
+				"MAX_VALUE",
+				"MIN_VALUE",
+				"NaN",
+				"NEGATIVE_INFINITY",
+				"POSITIVE_INFINITY",
+			},
+		}
+		runtime.global.NumberPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Number,
+				},
+			}
+	}
+	{
+		abs_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "abs",
+				call: builtinMath_abs,
+			},
+		}
+		acos_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "acos",
+				call: builtinMath_acos,
+			},
+		}
+		asin_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "asin",
+				call: builtinMath_asin,
+			},
+		}
+		atan_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "atan",
+				call: builtinMath_atan,
+			},
+		}
+		atan2_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "atan2",
+				call: builtinMath_atan2,
+			},
+		}
+		ceil_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "ceil",
+				call: builtinMath_ceil,
+			},
+		}
+		cos_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "cos",
+				call: builtinMath_cos,
+			},
+		}
+		exp_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "exp",
+				call: builtinMath_exp,
+			},
+		}
+		floor_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "floor",
+				call: builtinMath_floor,
+			},
+		}
+		log_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "log",
+				call: builtinMath_log,
+			},
+		}
+		max_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "max",
+				call: builtinMath_max,
+			},
+		}
+		min_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "min",
+				call: builtinMath_min,
+			},
+		}
+		pow_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "pow",
+				call: builtinMath_pow,
+			},
+		}
+		random_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "random",
+				call: builtinMath_random,
+			},
+		}
+		round_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "round",
+				call: builtinMath_round,
+			},
+		}
+		sin_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "sin",
+				call: builtinMath_sin,
+			},
+		}
+		sqrt_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "sqrt",
+				call: builtinMath_sqrt,
+			},
+		}
+		tan_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "tan",
+				call: builtinMath_tan,
+			},
+		}
+		runtime.global.Math = &_object{
+			runtime:     runtime,
+			class:       "Math",
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				"abs": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: abs_function,
+					},
+				},
+				"acos": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: acos_function,
+					},
+				},
+				"asin": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: asin_function,
+					},
+				},
+				"atan": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: atan_function,
+					},
+				},
+				"atan2": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: atan2_function,
+					},
+				},
+				"ceil": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: ceil_function,
+					},
+				},
+				"cos": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: cos_function,
+					},
+				},
+				"exp": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: exp_function,
+					},
+				},
+				"floor": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: floor_function,
+					},
+				},
+				"log": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: log_function,
+					},
+				},
+				"max": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: max_function,
+					},
+				},
+				"min": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: min_function,
+					},
+				},
+				"pow": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: pow_function,
+					},
+				},
+				"random": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: random_function,
+					},
+				},
+				"round": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: round_function,
+					},
+				},
+				"sin": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: sin_function,
+					},
+				},
+				"sqrt": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: sqrt_function,
+					},
+				},
+				"tan": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: tan_function,
+					},
+				},
+				"E": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.E,
+					},
+				},
+				"LN10": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Ln10,
+					},
+				},
+				"LN2": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Ln2,
+					},
+				},
+				"LOG2E": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Log2E,
+					},
+				},
+				"LOG10E": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Log10E,
+					},
+				},
+				"PI": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Pi,
+					},
+				},
+				"SQRT1_2": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: sqrt1_2,
+					},
+				},
+				"SQRT2": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: math.Sqrt2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"abs",
+				"acos",
+				"asin",
+				"atan",
+				"atan2",
+				"ceil",
+				"cos",
+				"exp",
+				"floor",
+				"log",
+				"max",
+				"min",
+				"pow",
+				"random",
+				"round",
+				"sin",
+				"sqrt",
+				"tan",
+				"E",
+				"LN10",
+				"LN2",
+				"LOG2E",
+				"LOG10E",
+				"PI",
+				"SQRT1_2",
+				"SQRT2",
+			},
+		}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinDate_toString,
+			},
+		}
+		toDateString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toDateString",
+				call: builtinDate_toDateString,
+			},
+		}
+		toTimeString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toTimeString",
+				call: builtinDate_toTimeString,
+			},
+		}
+		toUTCString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toUTCString",
+				call: builtinDate_toUTCString,
+			},
+		}
+		toISOString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toISOString",
+				call: builtinDate_toISOString,
+			},
+		}
+		toJSON_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toJSON",
+				call: builtinDate_toJSON,
+			},
+		}
+		toGMTString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toGMTString",
+				call: builtinDate_toGMTString,
+			},
+		}
+		toLocaleString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleString",
+				call: builtinDate_toLocaleString,
+			},
+		}
+		toLocaleDateString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleDateString",
+				call: builtinDate_toLocaleDateString,
+			},
+		}
+		toLocaleTimeString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toLocaleTimeString",
+				call: builtinDate_toLocaleTimeString,
+			},
+		}
+		valueOf_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "valueOf",
+				call: builtinDate_valueOf,
+			},
+		}
+		getTime_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getTime",
+				call: builtinDate_getTime,
+			},
+		}
+		getYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getYear",
+				call: builtinDate_getYear,
+			},
+		}
+		getFullYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getFullYear",
+				call: builtinDate_getFullYear,
+			},
+		}
+		getUTCFullYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCFullYear",
+				call: builtinDate_getUTCFullYear,
+			},
+		}
+		getMonth_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getMonth",
+				call: builtinDate_getMonth,
+			},
+		}
+		getUTCMonth_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCMonth",
+				call: builtinDate_getUTCMonth,
+			},
+		}
+		getDate_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getDate",
+				call: builtinDate_getDate,
+			},
+		}
+		getUTCDate_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCDate",
+				call: builtinDate_getUTCDate,
+			},
+		}
+		getDay_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getDay",
+				call: builtinDate_getDay,
+			},
+		}
+		getUTCDay_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCDay",
+				call: builtinDate_getUTCDay,
+			},
+		}
+		getHours_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getHours",
+				call: builtinDate_getHours,
+			},
+		}
+		getUTCHours_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCHours",
+				call: builtinDate_getUTCHours,
+			},
+		}
+		getMinutes_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getMinutes",
+				call: builtinDate_getMinutes,
+			},
+		}
+		getUTCMinutes_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCMinutes",
+				call: builtinDate_getUTCMinutes,
+			},
+		}
+		getSeconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getSeconds",
+				call: builtinDate_getSeconds,
+			},
+		}
+		getUTCSeconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCSeconds",
+				call: builtinDate_getUTCSeconds,
+			},
+		}
+		getMilliseconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getMilliseconds",
+				call: builtinDate_getMilliseconds,
+			},
+		}
+		getUTCMilliseconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getUTCMilliseconds",
+				call: builtinDate_getUTCMilliseconds,
+			},
+		}
+		getTimezoneOffset_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "getTimezoneOffset",
+				call: builtinDate_getTimezoneOffset,
+			},
+		}
+		setTime_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setTime",
+				call: builtinDate_setTime,
+			},
+		}
+		setMilliseconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setMilliseconds",
+				call: builtinDate_setMilliseconds,
+			},
+		}
+		setUTCMilliseconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCMilliseconds",
+				call: builtinDate_setUTCMilliseconds,
+			},
+		}
+		setSeconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setSeconds",
+				call: builtinDate_setSeconds,
+			},
+		}
+		setUTCSeconds_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCSeconds",
+				call: builtinDate_setUTCSeconds,
+			},
+		}
+		setMinutes_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setMinutes",
+				call: builtinDate_setMinutes,
+			},
+		}
+		setUTCMinutes_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCMinutes",
+				call: builtinDate_setUTCMinutes,
+			},
+		}
+		setHours_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 4,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setHours",
+				call: builtinDate_setHours,
+			},
+		}
+		setUTCHours_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 4,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCHours",
+				call: builtinDate_setUTCHours,
+			},
+		}
+		setDate_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setDate",
+				call: builtinDate_setDate,
+			},
+		}
+		setUTCDate_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCDate",
+				call: builtinDate_setUTCDate,
+			},
+		}
+		setMonth_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setMonth",
+				call: builtinDate_setMonth,
+			},
+		}
+		setUTCMonth_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCMonth",
+				call: builtinDate_setUTCMonth,
+			},
+		}
+		setYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setYear",
+				call: builtinDate_setYear,
+			},
+		}
+		setFullYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setFullYear",
+				call: builtinDate_setFullYear,
+			},
+		}
+		setUTCFullYear_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "setUTCFullYear",
+				call: builtinDate_setUTCFullYear,
+			},
+		}
+		parse_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "parse",
+				call: builtinDate_parse,
+			},
+		}
+		UTC_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 7,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "UTC",
+				call: builtinDate_UTC,
+			},
+		}
+		now_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "now",
+				call: builtinDate_now,
+			},
+		}
+		runtime.global.DatePrototype = &_object{
+			runtime:     runtime,
+			class:       classDate,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueDate,
+			property: map[string]_property{
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"toDateString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toDateString_function,
+					},
+				},
+				"toTimeString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toTimeString_function,
+					},
+				},
+				"toUTCString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toUTCString_function,
+					},
+				},
+				"toISOString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toISOString_function,
+					},
+				},
+				"toJSON": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toJSON_function,
+					},
+				},
+				"toGMTString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toGMTString_function,
+					},
+				},
+				"toLocaleString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleString_function,
+					},
+				},
+				"toLocaleDateString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleDateString_function,
+					},
+				},
+				"toLocaleTimeString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toLocaleTimeString_function,
+					},
+				},
+				"valueOf": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: valueOf_function,
+					},
+				},
+				"getTime": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getTime_function,
+					},
+				},
+				"getYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getYear_function,
+					},
+				},
+				"getFullYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getFullYear_function,
+					},
+				},
+				"getUTCFullYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCFullYear_function,
+					},
+				},
+				"getMonth": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getMonth_function,
+					},
+				},
+				"getUTCMonth": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCMonth_function,
+					},
+				},
+				"getDate": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getDate_function,
+					},
+				},
+				"getUTCDate": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCDate_function,
+					},
+				},
+				"getDay": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getDay_function,
+					},
+				},
+				"getUTCDay": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCDay_function,
+					},
+				},
+				"getHours": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getHours_function,
+					},
+				},
+				"getUTCHours": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCHours_function,
+					},
+				},
+				"getMinutes": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getMinutes_function,
+					},
+				},
+				"getUTCMinutes": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCMinutes_function,
+					},
+				},
+				"getSeconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getSeconds_function,
+					},
+				},
+				"getUTCSeconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCSeconds_function,
+					},
+				},
+				"getMilliseconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getMilliseconds_function,
+					},
+				},
+				"getUTCMilliseconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getUTCMilliseconds_function,
+					},
+				},
+				"getTimezoneOffset": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: getTimezoneOffset_function,
+					},
+				},
+				"setTime": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setTime_function,
+					},
+				},
+				"setMilliseconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setMilliseconds_function,
+					},
+				},
+				"setUTCMilliseconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCMilliseconds_function,
+					},
+				},
+				"setSeconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setSeconds_function,
+					},
+				},
+				"setUTCSeconds": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCSeconds_function,
+					},
+				},
+				"setMinutes": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setMinutes_function,
+					},
+				},
+				"setUTCMinutes": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCMinutes_function,
+					},
+				},
+				"setHours": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setHours_function,
+					},
+				},
+				"setUTCHours": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCHours_function,
+					},
+				},
+				"setDate": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setDate_function,
+					},
+				},
+				"setUTCDate": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCDate_function,
+					},
+				},
+				"setMonth": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setMonth_function,
+					},
+				},
+				"setUTCMonth": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCMonth_function,
+					},
+				},
+				"setYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setYear_function,
+					},
+				},
+				"setFullYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setFullYear_function,
+					},
+				},
+				"setUTCFullYear": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: setUTCFullYear_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"toString",
+				"toDateString",
+				"toTimeString",
+				"toUTCString",
+				"toISOString",
+				"toJSON",
+				"toGMTString",
+				"toLocaleString",
+				"toLocaleDateString",
+				"toLocaleTimeString",
+				"valueOf",
+				"getTime",
+				"getYear",
+				"getFullYear",
+				"getUTCFullYear",
+				"getMonth",
+				"getUTCMonth",
+				"getDate",
+				"getUTCDate",
+				"getDay",
+				"getUTCDay",
+				"getHours",
+				"getUTCHours",
+				"getMinutes",
+				"getUTCMinutes",
+				"getSeconds",
+				"getUTCSeconds",
+				"getMilliseconds",
+				"getUTCMilliseconds",
+				"getTimezoneOffset",
+				"setTime",
+				"setMilliseconds",
+				"setUTCMilliseconds",
+				"setSeconds",
+				"setUTCSeconds",
+				"setMinutes",
+				"setUTCMinutes",
+				"setHours",
+				"setUTCHours",
+				"setDate",
+				"setUTCDate",
+				"setMonth",
+				"setUTCMonth",
+				"setYear",
+				"setFullYear",
+				"setUTCFullYear",
+			},
+		}
+		runtime.global.Date = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classDate,
+				call:      builtinDate,
+				construct: builtinNewDate,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 7,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.DatePrototype,
+					},
+				},
+				"parse": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: parse_function,
+					},
+				},
+				"UTC": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: UTC_function,
+					},
+				},
+				"now": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: now_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+				"parse",
+				"UTC",
+				"now",
+			},
+		}
+		runtime.global.DatePrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Date,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinRegExp_toString,
+			},
+		}
+		exec_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "exec",
+				call: builtinRegExp_exec,
+			},
+		}
+		test_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "test",
+				call: builtinRegExp_test,
+			},
+		}
+		compile_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "compile",
+				call: builtinRegExp_compile,
+			},
+		}
+		runtime.global.RegExpPrototype = &_object{
+			runtime:     runtime,
+			class:       classRegExp,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       prototypeValueRegExp,
+			property: map[string]_property{
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"exec": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: exec_function,
+					},
+				},
+				"test": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: test_function,
+					},
+				},
+				"compile": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: compile_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"toString",
+				"exec",
+				"test",
+				"compile",
+			},
+		}
+		runtime.global.RegExp = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classRegExp,
+				call:      builtinRegExp,
+				construct: builtinNewRegExp,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.RegExpPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.RegExpPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.RegExp,
+				},
+			}
+	}
+	{
+		toString_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "toString",
+				call: builtinError_toString,
+			},
+		}
+		runtime.global.ErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       classError,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"toString": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: toString_function,
+					},
+				},
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: classError,
+					},
+				},
+				"message": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"toString",
+				"name",
+				"message",
+			},
+		}
+		runtime.global.Error = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      classError,
+				call:      builtinError,
+				construct: builtinNewError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.ErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.ErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Error,
+				},
+			}
+	}
+	{
+		runtime.global.EvalErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "EvalError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "EvalError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.EvalError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "EvalError",
+				call:      builtinEvalError,
+				construct: builtinNewEvalError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.EvalErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.EvalErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.EvalError,
+				},
+			}
+	}
+	{
+		runtime.global.TypeErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "TypeError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "TypeError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.TypeError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "TypeError",
+				call:      builtinTypeError,
+				construct: builtinNewTypeError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.TypeErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.TypeErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.TypeError,
+				},
+			}
+	}
+	{
+		runtime.global.RangeErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "RangeError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "RangeError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.RangeError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "RangeError",
+				call:      builtinRangeError,
+				construct: builtinNewRangeError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.RangeErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.RangeErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.RangeError,
+				},
+			}
+	}
+	{
+		runtime.global.ReferenceErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "ReferenceError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "ReferenceError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.ReferenceError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "ReferenceError",
+				call:      builtinReferenceError,
+				construct: builtinNewReferenceError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.ReferenceErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.ReferenceErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.ReferenceError,
+				},
+			}
+	}
+	{
+		runtime.global.SyntaxErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "SyntaxError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "SyntaxError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.SyntaxError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "SyntaxError",
+				call:      builtinSyntaxError,
+				construct: builtinNewSyntaxError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.SyntaxErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.SyntaxErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.SyntaxError,
+				},
+			}
+	}
+	{
+		runtime.global.URIErrorPrototype = &_object{
+			runtime:     runtime,
+			class:       "URIError",
+			objectClass: _classObject,
+			prototype:   runtime.global.ErrorPrototype,
+			extensible:  true,
+			value:       nil,
+			property: map[string]_property{
+				"name": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueString,
+						value: "URIError",
+					},
+				},
+			},
+			propertyOrder: []string{
+				"name",
+			},
+		}
+		runtime.global.URIError = &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			value: _nativeFunctionObject{
+				name:      "URIError",
+				call:      builtinURIError,
+				construct: builtinNewURIError,
+			},
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+				"prototype": _property{
+					mode: 0,
+					value: Value{
+						kind:  valueObject,
+						value: runtime.global.URIErrorPrototype,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+				"prototype",
+			},
+		}
+		runtime.global.URIErrorPrototype.property["constructor"] =
+			_property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.URIError,
+				},
+			}
+	}
+	{
+		parse_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "parse",
+				call: builtinJSON_parse,
+			},
+		}
+		stringify_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 3,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "stringify",
+				call: builtinJSON_stringify,
+			},
+		}
+		runtime.global.JSON = &_object{
+			runtime:     runtime,
+			class:       "JSON",
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				"parse": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: parse_function,
+					},
+				},
+				"stringify": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: stringify_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"parse",
+				"stringify",
+			},
+		}
+	}
+	{
+		eval_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "eval",
+				call: builtinGlobal_eval,
+			},
+		}
+		parseInt_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 2,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "parseInt",
+				call: builtinGlobal_parseInt,
+			},
+		}
+		parseFloat_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "parseFloat",
+				call: builtinGlobal_parseFloat,
+			},
+		}
+		isNaN_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isNaN",
+				call: builtinGlobal_isNaN,
+			},
+		}
+		isFinite_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "isFinite",
+				call: builtinGlobal_isFinite,
+			},
+		}
+		decodeURI_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "decodeURI",
+				call: builtinGlobal_decodeURI,
+			},
+		}
+		decodeURIComponent_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "decodeURIComponent",
+				call: builtinGlobal_decodeURIComponent,
+			},
+		}
+		encodeURI_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "encodeURI",
+				call: builtinGlobal_encodeURI,
+			},
+		}
+		encodeURIComponent_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "encodeURIComponent",
+				call: builtinGlobal_encodeURIComponent,
+			},
+		}
+		escape_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "escape",
+				call: builtinGlobal_escape,
+			},
+		}
+		unescape_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 1,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "unescape",
+				call: builtinGlobal_unescape,
+			},
+		}
+		runtime.globalObject.property = map[string]_property{
+			"eval": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: eval_function,
+				},
+			},
+			"parseInt": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: parseInt_function,
+				},
+			},
+			"parseFloat": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: parseFloat_function,
+				},
+			},
+			"isNaN": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: isNaN_function,
+				},
+			},
+			"isFinite": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: isFinite_function,
+				},
+			},
+			"decodeURI": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: decodeURI_function,
+				},
+			},
+			"decodeURIComponent": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: decodeURIComponent_function,
+				},
+			},
+			"encodeURI": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: encodeURI_function,
+				},
+			},
+			"encodeURIComponent": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: encodeURIComponent_function,
+				},
+			},
+			"escape": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: escape_function,
+				},
+			},
+			"unescape": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: unescape_function,
+				},
+			},
+			classObject: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Object,
+				},
+			},
+			classFunction: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Function,
+				},
+			},
+			classArray: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Array,
+				},
+			},
+			classString: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.String,
+				},
+			},
+			classBoolean: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Boolean,
+				},
+			},
+			classNumber: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Number,
+				},
+			},
+			"Math": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Math,
+				},
+			},
+			classDate: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Date,
+				},
+			},
+			classRegExp: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.RegExp,
+				},
+			},
+			classError: _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.Error,
+				},
+			},
+			"EvalError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.EvalError,
+				},
+			},
+			"TypeError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.TypeError,
+				},
+			},
+			"RangeError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.RangeError,
+				},
+			},
+			"ReferenceError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.ReferenceError,
+				},
+			},
+			"SyntaxError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.SyntaxError,
+				},
+			},
+			"URIError": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.URIError,
+				},
+			},
+			"JSON": _property{
+				mode: 0101,
+				value: Value{
+					kind:  valueObject,
+					value: runtime.global.JSON,
+				},
+			},
+			"undefined": _property{
+				mode: 0,
+				value: Value{
+					kind: valueUndefined,
+				},
+			},
+			"NaN": _property{
+				mode: 0,
+				value: Value{
+					kind:  valueNumber,
+					value: math.NaN(),
+				},
+			},
+			"Infinity": _property{
+				mode: 0,
+				value: Value{
+					kind:  valueNumber,
+					value: math.Inf(+1),
+				},
+			},
+		}
+		runtime.globalObject.propertyOrder = []string{
+			"eval",
+			"parseInt",
+			"parseFloat",
+			"isNaN",
+			"isFinite",
+			"decodeURI",
+			"decodeURIComponent",
+			"encodeURI",
+			"encodeURIComponent",
+			"escape",
+			"unescape",
+			classObject,
+			classFunction,
+			classArray,
+			classString,
+			classBoolean,
+			classNumber,
+			"Math",
+			classDate,
+			classRegExp,
+			classError,
+			"EvalError",
+			"TypeError",
+			"RangeError",
+			"ReferenceError",
+			"SyntaxError",
+			"URIError",
+			"JSON",
+			"undefined",
+			"NaN",
+			"Infinity",
+		}
+	}
+}
+
+func newConsoleObject(runtime *_runtime) *_object {
+	{
+		log_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "log",
+				call: builtinConsole_log,
+			},
+		}
+		debug_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "debug",
+				call: builtinConsole_log,
+			},
+		}
+		info_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "info",
+				call: builtinConsole_log,
+			},
+		}
+		error_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "error",
+				call: builtinConsole_error,
+			},
+		}
+		warn_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "warn",
+				call: builtinConsole_error,
+			},
+		}
+		dir_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "dir",
+				call: builtinConsole_dir,
+			},
+		}
+		time_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "time",
+				call: builtinConsole_time,
+			},
+		}
+		timeEnd_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "timeEnd",
+				call: builtinConsole_timeEnd,
+			},
+		}
+		trace_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "trace",
+				call: builtinConsole_trace,
+			},
+		}
+		assert_function := &_object{
+			runtime:     runtime,
+			class:       classFunction,
+			objectClass: _classObject,
+			prototype:   runtime.global.FunctionPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				propertyLength: _property{
+					mode: 0,
+					value: Value{
+						kind:  valueNumber,
+						value: 0,
+					},
+				},
+			},
+			propertyOrder: []string{
+				propertyLength,
+			},
+			value: _nativeFunctionObject{
+				name: "assert",
+				call: builtinConsole_assert,
+			},
+		}
+		return &_object{
+			runtime:     runtime,
+			class:       classObject,
+			objectClass: _classObject,
+			prototype:   runtime.global.ObjectPrototype,
+			extensible:  true,
+			property: map[string]_property{
+				"log": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: log_function,
+					},
+				},
+				"debug": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: debug_function,
+					},
+				},
+				"info": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: info_function,
+					},
+				},
+				"error": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: error_function,
+					},
+				},
+				"warn": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: warn_function,
+					},
+				},
+				"dir": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: dir_function,
+					},
+				},
+				"time": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: time_function,
+					},
+				},
+				"timeEnd": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: timeEnd_function,
+					},
+				},
+				"trace": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: trace_function,
+					},
+				},
+				"assert": _property{
+					mode: 0101,
+					value: Value{
+						kind:  valueObject,
+						value: assert_function,
+					},
+				},
+			},
+			propertyOrder: []string{
+				"log",
+				"debug",
+				"info",
+				"error",
+				"warn",
+				"dir",
+				"time",
+				"timeEnd",
+				"trace",
+				"assert",
+			},
+		}
+	}
+}
+
+func toValue_int(value int) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_int32(value int32) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_int64(value int64) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_uint16(value uint16) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_uint32(value uint32) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_float64(value float64) Value {
+	return Value{
+		kind:  valueNumber,
+		value: value,
+	}
+}
+
+func toValue_string(value string) Value {
+	return Value{
+		kind:  valueString,
+		value: value,
+	}
+}
+
+func toValue_string16(value []uint16) Value {
+	return Value{
+		kind:  valueString,
+		value: value,
+	}
+}
+
+func toValue_bool(value bool) Value {
+	return Value{
+		kind:  valueBoolean,
+		value: value,
+	}
+}
+
+func toValue_object(value *_object) Value {
+	return Value{
+		kind:  valueObject,
+		value: value,
+	}
+}

vendor/github.com/robertkrimen/otto/inline.pl

@@ -0,0 +1,1087 @@
+#!/usr/bin/env perl
+
+my $_fmt;
+$_fmt = "gofmt";
+$_fmt = "cat -n" if "cat" eq ($ARGV[0] || "");
+
+use strict;
+use warnings;
+use IO::File;
+
+my $self = __PACKAGE__;
+
+sub functionLabel ($) {
+    return "$_[0]_function";
+}
+
+sub trim ($) {
+    local $_ = shift;
+    s/^\s*//, s/\s*$// for $_;
+    return $_;
+}
+
+open my $fmt, "|-", "$_fmt" or die $!;
+
+$fmt->print(<<_END_);
+package otto
+
+import (
+    "math"
+)
+
+func _newContext(runtime *_runtime) {
+@{[ join "\n", $self->newContext() ]}
+}
+
+func newConsoleObject(runtime *_runtime) *_object {
+@{[ join "\n", $self->newConsoleObject() ]}
+}
+_END_
+
+for (qw/int int8 int16 int32 int64 uint uint8 uint16 uint32 uint64 float32 float64/) {
+    $fmt->print(<<_END_);
+
+func toValue_$_(value $_) Value {
+    return Value{
+        kind: valueNumber,
+        value: value,
+    }
+}
+_END_
+}
+
+$fmt->print(<<_END_);
+
+func toValue_string(value string) Value {
+    return Value{
+        kind: valueString,
+        value: value,
+    }
+}
+
+func toValue_string16(value []uint16) Value {
+    return Value{
+        kind: valueString,
+        value: value,
+    }
+}
+
+func toValue_bool(value bool) Value {
+    return Value{
+        kind: valueBoolean,
+        value: value,
+    }
+}
+
+func toValue_object(value *_object) Value {
+    return Value{
+        kind: valueObject,
+        value: value,
+    }
+}
+_END_
+
+close $fmt;
+
+sub newConsoleObject {
+    my $self = shift;
+
+    return
+        $self->block(sub {
+            my $class = "Console";
+            my @got = $self->functionDeclare(
+                $class,
+                "log", 0,
+                "debug:log", 0,
+                "info:log", 0,
+                "error", 0,
+                "warn:error", 0,
+                "dir", 0,
+                "time", 0,
+                "timeEnd", 0,
+                "trace", 0,
+                "assert", 0,
+            );
+            return
+            "return @{[ $self->newObject(@got) ]}"
+        }),
+    ;
+}
+
+sub newContext {
+    my $self = shift;
+    return
+        # ObjectPrototype
+        $self->block(sub {
+            my $class = "Object";
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                undef,
+                "prototypeValueObject",
+            ),
+        }),
+
+        # FunctionPrototype
+        $self->block(sub {
+            my $class = "Function";
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                "prototypeValueFunction",
+            ),
+        }),
+
+        # ObjectPrototype
+        $self->block(sub {
+            my $class = "Object";
+            my @got = $self->functionDeclare(
+                $class,
+                "valueOf", 0,
+                "toString", 0,
+                "toLocaleString", 0,
+                "hasOwnProperty", 1,
+                "isPrototypeOf", 1,
+                "propertyIsEnumerable", 1,
+            );
+            my @propertyMap = $self->propertyMap(
+                @got,
+                $self->property("constructor", undef),
+            );
+            my $propertyOrder = $self->propertyOrder(@propertyMap);
+            $propertyOrder =~ s/^propertyOrder: //;
+            return
+            ".${class}Prototype.property =", @propertyMap,
+            ".${class}Prototype.propertyOrder =", $propertyOrder,
+        }),
+
+        # FunctionPrototype
+        $self->block(sub {
+            my $class = "Function";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "apply", 2,
+                "call", 1,
+                "bind", 1,
+            );
+            my @propertyMap = $self->propertyMap(
+                @got,
+                $self->property("constructor", undef),
+                $self->property("length", $self->numberValue(0), "0"),
+            );
+            my $propertyOrder = $self->propertyOrder(@propertyMap);
+            $propertyOrder =~ s/^propertyOrder: //;
+            return
+            ".${class}Prototype.property =", @propertyMap,
+            ".${class}Prototype.propertyOrder =", $propertyOrder,
+        }),
+
+        # Object
+        $self->block(sub {
+            my $class = "Object";
+            return
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+                    "getPrototypeOf", 1,
+                    "getOwnPropertyDescriptor", 2,
+                    "defineProperty", 3,
+                    "defineProperties", 2,
+                    "create", 2,
+                    "isExtensible", 1,
+                    "preventExtensions", 1,
+                    "isSealed", 1,
+                    "seal", 1,
+                    "isFrozen", 1,
+                    "freeze", 1,
+                    "keys", 1,
+                    "getOwnPropertyNames", 1,
+                ),
+            ),
+        }),
+
+        # Function
+        $self->block(sub {
+            my $class = "Function";
+            return
+            "Function :=",
+            $self->globalFunction(
+                $class,
+                1,
+            ),
+            ".$class = Function",
+        }),
+
+        # Array
+        $self->block(sub {
+            my $class = "Array";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "toLocaleString", 0,
+                "concat", 1,
+                "join", 1,
+                "splice", 2,
+                "shift", 0,
+                "pop", 0,
+                "push", 1,
+                "slice", 2,
+                "unshift", 1,
+                "reverse", 0,
+                "sort", 1,
+                "indexOf", 1,
+                "lastIndexOf", 1,
+                "every", 1,
+                "some", 1,
+                "forEach", 1,
+                "map", 1,
+                "filter", 1,
+                "reduce", 1,
+                "reduceRight", 1,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classArray",
+                ".ObjectPrototype",
+                undef,
+                $self->property("length", $self->numberValue("uint32(0)"), "0100"),
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+                    "isArray", 1,
+                ),
+            ),
+        }),
+
+        # String
+        $self->block(sub {
+            my $class = "String";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "valueOf", 0,
+                "charAt", 1,
+                "charCodeAt", 1,
+                "concat", 1,
+                "indexOf", 1,
+                "lastIndexOf", 1,
+                "match", 1,
+                "replace", 2,
+                "search", 1,
+                "split", 2,
+                "slice", 2,
+                "substring", 2,
+                "toLowerCase", 0,
+                "toUpperCase", 0,
+                "substr", 2,
+                "trim", 0,
+                "trimLeft", 0,
+                "trimRight", 0,
+                "localeCompare", 1,
+                "toLocaleLowerCase", 0,
+                "toLocaleUpperCase", 0,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classString",
+                ".ObjectPrototype",
+                "prototypeValueString",
+                $self->property("length", $self->numberValue("int(0)"), "0"),
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+		            "fromCharCode", 1,
+                ),
+            ),
+        }),
+
+        # Boolean
+        $self->block(sub {
+            my $class = "Boolean";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "valueOf", 0,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                "prototypeValueBoolean",
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+                ),
+            ),
+        }),
+
+        # Number
+        $self->block(sub {
+            my $class = "Number";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "valueOf", 0,
+                "toFixed", 1,
+                "toExponential", 1,
+                "toPrecision", 1,
+                "toLocaleString", 1,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                "prototypeValueNumber",
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+                    "isNaN", 1,
+                ),
+                $self->numberConstantDeclare(
+                    "MAX_VALUE", "math.MaxFloat64",
+                    "MIN_VALUE", "math.SmallestNonzeroFloat64",
+                    "NaN", "math.NaN()",
+                    "NEGATIVE_INFINITY", "math.Inf(-1)",
+                    "POSITIVE_INFINITY", "math.Inf(+1)",
+                ),
+            ),
+        }),
+
+        # Math
+        $self->block(sub {
+            my $class = "Math";
+            return
+            ".$class =",
+            $self->globalObject(
+                $class,
+                $self->functionDeclare(
+                    $class,
+                    "abs", 1,
+                    "acos", 1,
+                    "asin", 1,
+                    "atan", 1,
+                    "atan2", 1,
+                    "ceil", 1,
+                    "cos", 1,
+                    "exp", 1,
+                    "floor", 1,
+                    "log", 1,
+                    "max", 2,
+                    "min", 2,
+                    "pow", 2,
+                    "random", 0,
+                    "round", 1,
+                    "sin", 1,
+                    "sqrt", 1,
+                    "tan", 1,
+                ),
+                $self->numberConstantDeclare(
+                    "E", "math.E",
+                    "LN10", "math.Ln10",
+                    "LN2", "math.Ln2",
+                    "LOG2E", "math.Log2E",
+                    "LOG10E", "math.Log10E",
+                    "PI", "math.Pi",
+                    "SQRT1_2", "sqrt1_2",
+                    "SQRT2", "math.Sqrt2",
+                )
+            ),
+        }),
+
+        # Date
+        $self->block(sub {
+            my $class = "Date";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "toDateString", 0,
+                "toTimeString", 0,
+                "toUTCString", 0,
+                "toISOString", 0,
+                "toJSON", 1,
+                "toGMTString", 0,
+                "toLocaleString", 0,
+                "toLocaleDateString", 0,
+                "toLocaleTimeString", 0,
+                "valueOf", 0,
+                "getTime", 0,
+                "getYear", 0,
+                "getFullYear", 0,
+                "getUTCFullYear", 0,
+                "getMonth", 0,
+                "getUTCMonth", 0,
+                "getDate", 0,
+                "getUTCDate", 0,
+                "getDay", 0,
+                "getUTCDay", 0,
+                "getHours", 0,
+                "getUTCHours", 0,
+                "getMinutes", 0,
+                "getUTCMinutes", 0,
+                "getSeconds", 0,
+                "getUTCSeconds", 0,
+                "getMilliseconds", 0,
+                "getUTCMilliseconds", 0,
+                "getTimezoneOffset", 0,
+                "setTime", 1,
+                "setMilliseconds", 1,
+                "setUTCMilliseconds", 1,
+                "setSeconds", 2,
+                "setUTCSeconds", 2,
+                "setMinutes", 3,
+                "setUTCMinutes", 3,
+                "setHours", 4,
+                "setUTCHours", 4,
+                "setDate", 1,
+                "setUTCDate", 1,
+                "setMonth", 2,
+                "setUTCMonth", 2,
+                "setYear", 1,
+                "setFullYear", 3,
+                "setUTCFullYear", 3,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                "prototypeValueDate",
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                7,
+                $self->functionDeclare(
+                    $class,
+                    "parse", 1,
+                    "UTC", 7,
+                    "now", 0,
+                ),
+            ),
+        }),
+
+        # RegExp
+        $self->block(sub {
+            my $class = "RegExp";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+                "exec", 1,
+                "test", 1,
+                "compile", 1,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                "prototypeValueRegExp",
+                @got,
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                2,
+                $self->functionDeclare(
+                    $class,
+                ),
+            ),
+        }),
+
+        # Error
+        $self->block(sub {
+            my $class = "Error";
+            my @got = $self->functionDeclare(
+                $class,
+                "toString", 0,
+            );
+            return
+            ".${class}Prototype =",
+            $self->globalPrototype(
+                $class,
+                "_classObject",
+                ".ObjectPrototype",
+                undef,
+                @got,
+                $self->property("name", $self->stringValue("Error")),
+                $self->property("message", $self->stringValue("")),
+            ),
+            ".$class =",
+            $self->globalFunction(
+                $class,
+                1,
+                $self->functionDeclare(
+                    $class,
+                ),
+            ),
+        }),
+
+        (map {
+            my $class = "${_}Error";
+            $self->block(sub {
+                my @got = $self->functionDeclare(
+                    $class,
+                );
+                return
+                ".${class}Prototype =",
+                $self->globalPrototype(
+                    $class,
+                    "_classObject",
+                    ".ErrorPrototype",
+                    undef,
+                    @got,
+                    $self->property("name", $self->stringValue($class)),
+                ),
+                ".$class =",
+                $self->globalFunction(
+                    $class,
+                    1,
+                    $self->functionDeclare(
+                        $class,
+                    ),
+                ),
+            });
+        } qw/Eval Type Range Reference Syntax URI/),
+
+        # JSON
+        $self->block(sub {
+            my $class = "JSON";
+            return
+            ".$class =",
+            $self->globalObject(
+                $class,
+                $self->functionDeclare(
+                    $class,
+                    "parse", 2,
+                    "stringify", 3,
+                ),
+            ),
+        }),
+
+        # Global
+        $self->block(sub {
+            my $class = "Global";
+            my @got = $self->functionDeclare(
+                $class,
+                "eval", 1,
+                "parseInt", 2,
+                "parseFloat", 1,
+                "isNaN", 1,
+                "isFinite", 1,
+                "decodeURI", 1,
+                "decodeURIComponent", 1,
+                "encodeURI", 1,
+                "encodeURIComponent", 1,
+                "escape", 1,
+                "unescape", 1,
+            );
+            my @propertyMap = $self->propertyMap(
+                @got,
+                $self->globalDeclare(
+                    "Object",
+                    "Function",
+                    "Array",
+                    "String",
+                    "Boolean",
+                    "Number",
+                    "Math",
+                    "Date",
+                    "RegExp",
+                    "Error",
+                    "EvalError",
+                    "TypeError",
+                    "RangeError",
+                    "ReferenceError",
+                    "SyntaxError",
+                    "URIError",
+                    "JSON",
+                ),
+                $self->property("undefined", $self->undefinedValue(), "0"),
+                $self->property("NaN", $self->numberValue("math.NaN()"), "0"),
+                $self->property("Infinity", $self->numberValue("math.Inf(+1)"), "0"),
+            );
+            my $propertyOrder = $self->propertyOrder(@propertyMap);
+            $propertyOrder =~ s/^propertyOrder: //;
+            return
+            "runtime.globalObject.property =",
+            @propertyMap,
+            "runtime.globalObject.propertyOrder =",
+            $propertyOrder,
+            ;
+        }),
+    ;
+}
+
+sub propertyMap {
+    my $self = shift;
+    return "map[string]_property{", (join ",\n", @_, ""), "}",
+}
+
+our (@preblock, @postblock);
+sub block {
+    my $self = shift;
+    local @preblock = ();
+    local @postblock = ();
+    my @input = $_[0]->();
+    my @output;
+    while (@input) {
+        local $_ = shift @input;
+        if (m/^\./) {
+            $_ = "runtime.global$_";
+        }
+        if (m/ :?=$/) {
+            $_ .= shift @input;
+        }
+        push @output, $_;
+    }
+    return
+    "{",
+        @preblock,
+        @output,
+        @postblock,
+    "}",
+    ;
+}
+
+sub numberConstantDeclare {
+    my $self = shift;
+    my @got;
+    while (@_) {
+        my $name = shift;
+        my $value = shift;
+        push @got, $self->property($name, $self->numberValue($value), "0"),
+    }
+    return @got;
+}
+
+sub functionDeclare {
+    my $self = shift;
+    my $class = shift;
+    my $builtin = "builtin${class}";
+    my @got;
+    while (@_) {
+        my $name = shift;
+        my $length = shift;
+        $name = $self->newFunction($name, "${builtin}_", $length);
+        push @got, $self->functionProperty($name),
+    }
+    return @got;
+}
+
+sub globalDeclare {
+    my $self = shift;
+    my @got;
+    while (@_) {
+        my $name = shift;
+        push @got, $self->property($name, $self->objectValue("runtime.global.$name"), "0101"),
+    }
+    return @got;
+}
+
+sub propertyOrder {
+    my $self = shift;
+    my $propertyMap = join "", @_;
+
+    my (@keys) = $propertyMap =~ m/("\w+"):/g;
+    my $propertyOrder =
+        join "\n", "propertyOrder: []string{", (join ",\n", @keys, ""), "}";
+    return $propertyOrder;
+}
+
+sub globalObject {
+    my $self = shift;
+    my $name = shift;
+
+    my $propertyMap = "";
+    if (@_) {
+        $propertyMap = join "\n", $self->propertyMap(@_);
+        my $propertyOrder = $self->propertyOrder($propertyMap);
+        $propertyMap = "property: $propertyMap,\n$propertyOrder,";
+    }
+
+    return trim <<_END_;
+&_object{
+    runtime: runtime,
+    class: "$name",
+    objectClass: _classObject,
+    prototype: runtime.global.ObjectPrototype,
+    extensible: true,
+    $propertyMap
+}
+_END_
+}
+
+sub globalFunction {
+    my $self = shift;
+    my $name = shift;
+    my $length = shift;
+
+    my $builtin = "builtin${name}";
+    my $builtinNew = "builtinNew${name}";
+    my $prototype = "runtime.global.${name}Prototype";
+    my $propertyMap = "";
+    unshift @_,
+        $self->property("length", $self->numberValue($length), "0"),
+        $self->property("prototype", $self->objectValue($prototype), "0"),
+    ;
+
+    if (@_) {
+        $propertyMap = join "\n", $self->propertyMap(@_);
+        my $propertyOrder = $self->propertyOrder($propertyMap);
+        $propertyMap = "property: $propertyMap,\n$propertyOrder,";
+    }
+
+    push @postblock, $self->statement(
+        "$prototype.property[\"constructor\"] =",
+        $self->property(undef, $self->objectValue("runtime.global.${name}"), "0101"),
+    );
+
+    return trim <<_END_;
+&_object{
+    runtime: runtime,
+    class: "Function",
+    objectClass: _classObject,
+    prototype: runtime.global.FunctionPrototype,
+    extensible: true,
+    value: @{[ $self->nativeFunctionOf($name, $builtin, $builtinNew) ]},
+    $propertyMap
+}
+_END_
+}
+
+sub nativeCallFunction {
+    my $self = shift;
+    my $name = shift;
+    my $func = shift;
+    return trim <<_END_;
+_nativeCallFunction{ "$name", $func }
+_END_
+}
+
+sub globalPrototype {
+    my $self = shift;
+    my $class = shift;
+    my $classObject = shift;
+    my $prototype = shift;
+    my $value = shift;
+
+    if (!defined $prototype) {
+        $prototype = "nil";
+    }
+
+    if (!defined $value) {
+        $value = "nil";
+    }
+
+    if ($prototype =~ m/^\./) {
+        $prototype = "runtime.global$prototype";
+    }
+
+    my $propertyMap = "";
+    if (@_) {
+        $propertyMap = join "\n", $self->propertyMap(@_);
+        my $propertyOrder = $self->propertyOrder($propertyMap);
+        $propertyMap = "property: $propertyMap,\n$propertyOrder,";
+    }
+
+    return trim <<_END_;
+&_object{
+    runtime: runtime,
+    class: "$class",
+    objectClass: $classObject,
+    prototype: $prototype,
+    extensible: true,
+    value: $value,
+    $propertyMap
+}
+_END_
+}
+
+sub newFunction {
+    my $self = shift;
+    my $name = shift;
+    my $func = shift;
+    my $length = shift;
+
+    my @name = ($name, $name);
+    if ($name =~ m/^(\w+):(\w+)$/) {
+        @name = ($1, $2);
+        $name = $name[0];
+    }
+
+    if ($func =~ m/^builtin\w+_$/) {
+        $func = "$func$name[1]";
+    }
+
+    my $propertyOrder = "";
+    my @propertyMap = (
+        $self->property("length", $self->numberValue($length), "0"),
+    );
+
+    if (@propertyMap) {
+        $propertyOrder = $self->propertyOrder(@propertyMap);
+        $propertyOrder = "$propertyOrder,";
+    }
+
+    my $label = functionLabel($name);
+    push @preblock, $self->statement(
+        "$label := @{[ trim <<_END_ ]}",
+&_object{
+    runtime: runtime,
+    class: "Function",
+    objectClass: _classObject,
+    prototype: runtime.global.FunctionPrototype,
+    extensible: true,
+    property: @{[ join "\n", $self->propertyMap(@propertyMap) ]},
+    $propertyOrder
+    value: @{[ $self->nativeFunctionOf($name, $func) ]},
+}
+_END_
+    );
+
+    return $name;
+}
+
+sub newObject {
+    my $self = shift;
+
+    my $propertyMap = join "\n", $self->propertyMap(@_);
+    my $propertyOrder = $self->propertyOrder($propertyMap);
+
+    return trim <<_END_;
+&_object{
+    runtime: runtime,
+    class: "Object",
+    objectClass: _classObject,
+    prototype: runtime.global.ObjectPrototype,
+    extensible: true,
+    property: $propertyMap,
+    $propertyOrder,
+}
+_END_
+}
+
+sub newPrototypeObject {
+    my $self = shift;
+    my $class = shift;
+    my $objectClass = shift;
+    my $value = shift;
+    if (defined $value) {
+        $value = "value: $value,";
+    }
+
+    my $propertyMap = join "\n", $self->propertyMap(@_);
+    my $propertyOrder = $self->propertyOrder($propertyMap);
+
+    return trim <<_END_;
+&_object{
+    runtime: runtime,
+    class: "$class",
+    objectClass: $objectClass,
+    prototype: runtime.global.ObjectPrototype,
+    extensible: true,
+    property: $propertyMap,
+    $propertyOrder,
+    $value
+}
+_END_
+}
+
+sub functionProperty {
+    my $self = shift;
+    my $name = shift;
+
+    return $self->property(
+        $name,
+        $self->objectValue(functionLabel($name))
+    );
+}
+
+sub statement {
+    my $self = shift;
+    return join "\n", @_;
+}
+
+sub functionOf {
+    my $self = shift;
+    my $call = shift;
+    my $construct = shift;
+    if ($construct) {
+        $construct = "construct: $construct,";
+    } else {
+        $construct = "";
+    }
+
+    return trim <<_END_
+_functionObject{
+    call: $call,
+    $construct
+}
+_END_
+}
+
+sub nativeFunctionOf {
+    my $self = shift;
+    my $name = shift;
+    my $call = shift;
+    my $construct = shift;
+    if ($construct) {
+        $construct = "construct: $construct,";
+    } else {
+        $construct = "";
+    }
+
+    return trim <<_END_
+_nativeFunctionObject{
+    name: "$name",
+    call: $call,
+    $construct
+}
+_END_
+}
+
+sub nameProperty {
+    my $self = shift;
+    my $name = shift;
+    my $value = shift;
+
+    return trim <<_END_;
+"$name": _property{
+    mode: 0101,
+    value: $value,
+}
+_END_
+}
+
+sub numberValue {
+    my $self = shift;
+    my $value = shift;
+    return trim <<_END_;
+Value{
+    kind: valueNumber,
+    value: $value,
+}
+_END_
+}
+
+sub property {
+    my $self = shift;
+    my $name = shift;
+    my $value = shift;
+    my $mode = shift;
+    $mode = "0101" unless defined $mode;
+    if (! defined $value) {
+        $value = "Value{}";
+    }
+    if (defined $name) {
+        return trim <<_END_;
+"$name": _property{
+    mode: $mode,
+    value: $value,
+}
+_END_
+    } else {
+        return trim <<_END_;
+_property{
+    mode: $mode,
+    value: $value,
+}
+_END_
+    }
+
+}
+
+sub objectProperty {
+    my $self = shift;
+    my $name = shift;
+    my $value = shift;
+
+    return trim <<_END_;
+"$name": _property{
+    mode: 0101,
+    value: @{[ $self->objectValue($value)]},
+}
+_END_
+}
+
+sub objectValue {
+    my $self = shift;
+    my $value = shift;
+    return trim <<_END_
+Value{
+    kind: valueObject,
+    value: $value,
+}
+_END_
+}
+
+sub stringValue {
+    my $self = shift;
+    my $value = shift;
+    return trim <<_END_
+Value{
+    kind: valueString,
+    value: "$value",
+}
+_END_
+}
+
+sub booleanValue {
+    my $self = shift;
+    my $value = shift;
+    return trim <<_END_
+Value{
+    kind: valueBoolean,
+    value: $value,
+}
+_END_
+}
+
+sub undefinedValue {
+    my $self = shift;
+    return trim <<_END_
+Value{
+    kind: valueUndefined,
+}
+_END_
+}

vendor/github.com/robertkrimen/otto/object.go

@@ -0,0 +1,156 @@
+package otto
+
+type _object struct {
+	runtime *_runtime
+
+	class       string
+	objectClass *_objectClass
+	value       interface{}
+
+	prototype  *_object
+	extensible bool
+
+	property      map[string]_property
+	propertyOrder []string
+}
+
+func newObject(runtime *_runtime, class string) *_object {
+	self := &_object{
+		runtime:     runtime,
+		class:       class,
+		objectClass: _classObject,
+		property:    make(map[string]_property),
+		extensible:  true,
+	}
+	return self
+}
+
+// 8.12
+
+// 8.12.1
+func (self *_object) getOwnProperty(name string) *_property {
+	return self.objectClass.getOwnProperty(self, name)
+}
+
+// 8.12.2
+func (self *_object) getProperty(name string) *_property {
+	return self.objectClass.getProperty(self, name)
+}
+
+// 8.12.3
+func (self *_object) get(name string) Value {
+	return self.objectClass.get(self, name)
+}
+
+// 8.12.4
+func (self *_object) canPut(name string) bool {
+	return self.objectClass.canPut(self, name)
+}
+
+// 8.12.5
+func (self *_object) put(name string, value Value, throw bool) {
+	self.objectClass.put(self, name, value, throw)
+}
+
+// 8.12.6
+func (self *_object) hasProperty(name string) bool {
+	return self.objectClass.hasProperty(self, name)
+}
+
+func (self *_object) hasOwnProperty(name string) bool {
+	return self.objectClass.hasOwnProperty(self, name)
+}
+
+type _defaultValueHint int
+
+const (
+	defaultValueNoHint _defaultValueHint = iota
+	defaultValueHintString
+	defaultValueHintNumber
+)
+
+// 8.12.8
+func (self *_object) DefaultValue(hint _defaultValueHint) Value {
+	if hint == defaultValueNoHint {
+		if self.class == classDate {
+			// Date exception
+			hint = defaultValueHintString
+		} else {
+			hint = defaultValueHintNumber
+		}
+	}
+	methodSequence := []string{"valueOf", "toString"}
+	if hint == defaultValueHintString {
+		methodSequence = []string{"toString", "valueOf"}
+	}
+	for _, methodName := range methodSequence {
+		method := self.get(methodName)
+		// FIXME This is redundant...
+		if method.isCallable() {
+			result := method._object().call(toValue_object(self), nil, false, nativeFrame)
+			if result.IsPrimitive() {
+				return result
+			}
+		}
+	}
+
+	panic(self.runtime.panicTypeError())
+}
+
+func (self *_object) String() string {
+	return self.DefaultValue(defaultValueHintString).string()
+}
+
+func (self *_object) defineProperty(name string, value Value, mode _propertyMode, throw bool) bool {
+	return self.defineOwnProperty(name, _property{value, mode}, throw)
+}
+
+// 8.12.9
+func (self *_object) defineOwnProperty(name string, descriptor _property, throw bool) bool {
+	return self.objectClass.defineOwnProperty(self, name, descriptor, throw)
+}
+
+func (self *_object) delete(name string, throw bool) bool {
+	return self.objectClass.delete(self, name, throw)
+}
+
+func (self *_object) enumerate(all bool, each func(string) bool) {
+	self.objectClass.enumerate(self, all, each)
+}
+
+func (self *_object) _exists(name string) bool {
+	_, exists := self.property[name]
+	return exists
+}
+
+func (self *_object) _read(name string) (_property, bool) {
+	property, exists := self.property[name]
+	return property, exists
+}
+
+func (self *_object) _write(name string, value interface{}, mode _propertyMode) {
+	if value == nil {
+		value = Value{}
+	}
+	_, exists := self.property[name]
+	self.property[name] = _property{value, mode}
+	if !exists {
+		self.propertyOrder = append(self.propertyOrder, name)
+	}
+}
+
+func (self *_object) _delete(name string) {
+	_, exists := self.property[name]
+	delete(self.property, name)
+	if exists {
+		for index, property := range self.propertyOrder {
+			if name == property {
+				if index == len(self.propertyOrder)-1 {
+					self.propertyOrder = self.propertyOrder[:index]
+				} else {
+					self.propertyOrder = append(self.propertyOrder[:index], self.propertyOrder[index+1:]...)
+				}
+			}
+		}
+	}
+}

vendor/github.com/robertkrimen/otto/object_class.go

@@ -0,0 +1,493 @@
+package otto
+
+import (
+	"encoding/json"
+)
+
+type _objectClass struct {
+	getOwnProperty    func(*_object, string) *_property
+	getProperty       func(*_object, string) *_property
+	get               func(*_object, string) Value
+	canPut            func(*_object, string) bool
+	put               func(*_object, string, Value, bool)
+	hasProperty       func(*_object, string) bool
+	hasOwnProperty    func(*_object, string) bool
+	defineOwnProperty func(*_object, string, _property, bool) bool
+	delete            func(*_object, string, bool) bool
+	enumerate         func(*_object, bool, func(string) bool)
+	clone             func(*_object, *_object, *_clone) *_object
+	marshalJSON       func(*_object) json.Marshaler
+}
+
+func objectEnumerate(self *_object, all bool, each func(string) bool) {
+	for _, name := range self.propertyOrder {
+		if all || self.property[name].enumerable() {
+			if !each(name) {
+				return
+			}
+		}
+	}
+}
+
+var (
+	_classObject,
+	_classArray,
+	_classString,
+	_classArguments,
+	_classGoStruct,
+	_classGoMap,
+	_classGoArray,
+	_classGoSlice,
+	_ *_objectClass
+)
+
+func init() {
+	_classObject = &_objectClass{
+		objectGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		objectDefineOwnProperty,
+		objectDelete,
+		objectEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classArray = &_objectClass{
+		objectGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		arrayDefineOwnProperty,
+		objectDelete,
+		objectEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classString = &_objectClass{
+		stringGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		objectDefineOwnProperty,
+		objectDelete,
+		stringEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classArguments = &_objectClass{
+		argumentsGetOwnProperty,
+		objectGetProperty,
+		argumentsGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		argumentsDefineOwnProperty,
+		argumentsDelete,
+		objectEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classGoStruct = &_objectClass{
+		goStructGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		goStructCanPut,
+		goStructPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		objectDefineOwnProperty,
+		objectDelete,
+		goStructEnumerate,
+		objectClone,
+		goStructMarshalJSON,
+	}
+
+	_classGoMap = &_objectClass{
+		goMapGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		goMapDefineOwnProperty,
+		goMapDelete,
+		goMapEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classGoArray = &_objectClass{
+		goArrayGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		goArrayDefineOwnProperty,
+		goArrayDelete,
+		goArrayEnumerate,
+		objectClone,
+		nil,
+	}
+
+	_classGoSlice = &_objectClass{
+		goSliceGetOwnProperty,
+		objectGetProperty,
+		objectGet,
+		objectCanPut,
+		objectPut,
+		objectHasProperty,
+		objectHasOwnProperty,
+		goSliceDefineOwnProperty,
+		goSliceDelete,
+		goSliceEnumerate,
+		objectClone,
+		nil,
+	}
+}
+
+// Allons-y
+
+// 8.12.1
+func objectGetOwnProperty(self *_object, name string) *_property {
+	// Return a _copy_ of the property
+	property, exists := self._read(name)
+	if !exists {
+		return nil
+	}
+	return &property
+}
+
+// 8.12.2
+func objectGetProperty(self *_object, name string) *_property {
+	property := self.getOwnProperty(name)
+	if property != nil {
+		return property
+	}
+	if self.prototype != nil {
+		return self.prototype.getProperty(name)
+	}
+	return nil
+}
+
+// 8.12.3
+func objectGet(self *_object, name string) Value {
+	property := self.getProperty(name)
+	if property != nil {
+		return property.get(self)
+	}
+	return Value{}
+}
+
+// 8.12.4
+func objectCanPut(self *_object, name string) bool {
+	canPut, _, _ := _objectCanPut(self, name)
+	return canPut
+}
+
+func _objectCanPut(self *_object, name string) (canPut bool, property *_property, setter *_object) {
+	property = self.getOwnProperty(name)
+	if property != nil {
+		switch propertyValue := property.value.(type) {
+		case Value:
+			canPut = property.writable()
+			return
+		case _propertyGetSet:
+			setter = propertyValue[1]
+			canPut = setter != nil
+			return
+		default:
+			panic(self.runtime.panicTypeError())
+		}
+	}
+
+	if self.prototype == nil {
+		return self.extensible, nil, nil
+	}
+
+	property = self.prototype.getProperty(name)
+	if property == nil {
+		return self.extensible, nil, nil
+	}
+
+	switch propertyValue := property.value.(type) {
+	case Value:
+		if !self.extensible {
+			return false, nil, nil
+		}
+		return property.writable(), nil, nil
+	case _propertyGetSet:
+		setter = propertyValue[1]
+		canPut = setter != nil
+		return
+	default:
+		panic(self.runtime.panicTypeError())
+	}
+}
+
+// 8.12.5
+func objectPut(self *_object, name string, value Value, throw bool) {
+
+	if true {
+		// Shortcut...
+		//
+		// So, right now, every class is using objectCanPut and every class
+		// is using objectPut.
+		//
+		// If that were to no longer be the case, we would have to have
+		// something to detect that here, so that we do not use an
+		// incompatible canPut routine
+		canPut, property, setter := _objectCanPut(self, name)
+		if !canPut {
+			self.runtime.typeErrorResult(throw)
+		} else if setter != nil {
+			setter.call(toValue(self), []Value{value}, false, nativeFrame)
+		} else if property != nil {
+			property.value = value
+			self.defineOwnProperty(name, *property, throw)
+		} else {
+			self.defineProperty(name, value, 0111, throw)
+		}
+		return
+	}
+
+	// The long way...
+	//
+	// Right now, code should never get here, see above
+	if !self.canPut(name) {
+		self.runtime.typeErrorResult(throw)
+		return
+	}
+
+	property := self.getOwnProperty(name)
+	if property == nil {
+		property = self.getProperty(name)
+		if property != nil {
+			if getSet, isAccessor := property.value.(_propertyGetSet); isAccessor {
+				getSet[1].call(toValue(self), []Value{value}, false, nativeFrame)
+				return
+			}
+		}
+		self.defineProperty(name, value, 0111, throw)
+	} else {
+		switch propertyValue := property.value.(type) {
+		case Value:
+			property.value = value
+			self.defineOwnProperty(name, *property, throw)
+		case _propertyGetSet:
+			if propertyValue[1] != nil {
+				propertyValue[1].call(toValue(self), []Value{value}, false, nativeFrame)
+				return
+			}
+			if throw {
+				panic(self.runtime.panicTypeError())
+			}
+		default:
+			panic(self.runtime.panicTypeError())
+		}
+	}
+}
+
+// 8.12.6
+func objectHasProperty(self *_object, name string) bool {
+	return self.getProperty(name) != nil
+}
+
+func objectHasOwnProperty(self *_object, name string) bool {
+	return self.getOwnProperty(name) != nil
+}
+
+// 8.12.9
+func objectDefineOwnProperty(self *_object, name string, descriptor _property, throw bool) bool {
+	property, exists := self._read(name)
+	{
+		if !exists {
+			if !self.extensible {
+				goto Reject
+			}
+			if newGetSet, isAccessor := descriptor.value.(_propertyGetSet); isAccessor {
+				if newGetSet[0] == &_nilGetSetObject {
+					newGetSet[0] = nil
+				}
+				if newGetSet[1] == &_nilGetSetObject {
+					newGetSet[1] = nil
+				}
+				descriptor.value = newGetSet
+			}
+			self._write(name, descriptor.value, descriptor.mode)
+			return true
+		}
+		if descriptor.isEmpty() {
+			return true
+		}
+
+		// TODO Per 8.12.9.6 - We should shortcut here (returning true) if
+		// the current and new (define) properties are the same
+
+		configurable := property.configurable()
+		if !configurable {
+			if descriptor.configurable() {
+				goto Reject
+			}
+			// Test that, if enumerable is set on the property descriptor, then it should
+			// be the same as the existing property
+			if descriptor.enumerateSet() && descriptor.enumerable() != property.enumerable() {
+				goto Reject
+			}
+		}
+		value, isDataDescriptor := property.value.(Value)
+		getSet, _ := property.value.(_propertyGetSet)
+		if descriptor.isGenericDescriptor() {
+			// GenericDescriptor
+		} else if isDataDescriptor != descriptor.isDataDescriptor() {
+			// DataDescriptor <=> AccessorDescriptor
+			if !configurable {
+				goto Reject
+			}
+		} else if isDataDescriptor && descriptor.isDataDescriptor() {
+			// DataDescriptor <=> DataDescriptor
+			if !configurable {
+				if !property.writable() && descriptor.writable() {
+					goto Reject
+				}
+				if !property.writable() {
+					if descriptor.value != nil && !sameValue(value, descriptor.value.(Value)) {
+						goto Reject
+					}
+				}
+			}
+		} else {
+			// AccessorDescriptor <=> AccessorDescriptor
+			newGetSet, _ := descriptor.value.(_propertyGetSet)
+			presentGet, presentSet := true, true
+			if newGetSet[0] == &_nilGetSetObject {
+				// Present, but nil
+				newGetSet[0] = nil
+			} else if newGetSet[0] == nil {
+				// Missing, not even nil
+				newGetSet[0] = getSet[0]
+				presentGet = false
+			}
+			if newGetSet[1] == &_nilGetSetObject {
+				// Present, but nil
+				newGetSet[1] = nil
+			} else if newGetSet[1] == nil {
+				// Missing, not even nil
+				newGetSet[1] = getSet[1]
+				presentSet = false
+			}
+			if !configurable {
+				if (presentGet && (getSet[0] != newGetSet[0])) || (presentSet && (getSet[1] != newGetSet[1])) {
+					goto Reject
+				}
+			}
+			descriptor.value = newGetSet
+		}
+		{
+			// This section will preserve attributes of
+			// the original property, if necessary
+			value1 := descriptor.value
+			if value1 == nil {
+				value1 = property.value
+			} else if newGetSet, isAccessor := descriptor.value.(_propertyGetSet); isAccessor {
+				if newGetSet[0] == &_nilGetSetObject {
+					newGetSet[0] = nil
+				}
+				if newGetSet[1] == &_nilGetSetObject {
+					newGetSet[1] = nil
+				}
+				value1 = newGetSet
+			}
+			mode1 := descriptor.mode
+			if mode1&0222 != 0 {
+				// TODO Factor this out into somewhere testable
+				// (Maybe put into switch ...)
+				mode0 := property.mode
+				if mode1&0200 != 0 {
+					if descriptor.isDataDescriptor() {
+						mode1 &= ^0200 // Turn off "writable" missing
+						mode1 |= (mode0 & 0100)
+					}
+				}
+				if mode1&020 != 0 {
+					mode1 |= (mode0 & 010)
+				}
+				if mode1&02 != 0 {
+					mode1 |= (mode0 & 01)
+				}
+				mode1 &= 0311 // 0311 to preserve the non-setting on "writable"
+			}
+			self._write(name, value1, mode1)
+		}
+		return true
+	}
+Reject:
+	if throw {
+		panic(self.runtime.panicTypeError())
+	}
+	return false
+}
+
+func objectDelete(self *_object, name string, throw bool) bool {
+	property_ := self.getOwnProperty(name)
+	if property_ == nil {
+		return true
+	}
+	if property_.configurable() {
+		self._delete(name)
+		return true
+	}
+	return self.runtime.typeErrorResult(throw)
+}
+
+func objectClone(in *_object, out *_object, clone *_clone) *_object {
+	*out = *in
+
+	out.runtime = clone.runtime
+	if out.prototype != nil {
+		out.prototype = clone.object(in.prototype)
+	}
+	out.property = make(map[string]_property, len(in.property))
+	out.propertyOrder = make([]string, len(in.propertyOrder))
+	copy(out.propertyOrder, in.propertyOrder)
+	for index, property := range in.property {
+		out.property[index] = clone.property(property)
+	}
+
+	switch value := in.value.(type) {
+	case _nativeFunctionObject:
+		out.value = value
+	case _bindFunctionObject:
+		out.value = _bindFunctionObject{
+			target:       clone.object(value.target),
+			this:         clone.value(value.this),
+			argumentList: clone.valueArray(value.argumentList),
+		}
+	case _nodeFunctionObject:
+		out.value = _nodeFunctionObject{
+			node:  value.node,
+			stash: clone.stash(value.stash),
+		}
+	case _argumentsObject:
+		out.value = value.clone(clone)
+	}
+
+	return out
+}

vendor/github.com/robertkrimen/otto/otto.go

@@ -0,0 +1,770 @@
+/*
+Package otto is a JavaScript parser and interpreter written natively in Go.
+
+http://godoc.org/github.com/robertkrimen/otto
+
+    import (
+        "github.com/robertkrimen/otto"
+    )
+
+Run something in the VM
+
+    vm := otto.New()
+    vm.Run(`
+        abc = 2 + 2;
+    	console.log("The value of abc is " + abc); // 4
+    `)
+
+Get a value out of the VM
+
+    value, err := vm.Get("abc")
+    	value, _ := value.ToInteger()
+    }
+
+Set a number
+
+    vm.Set("def", 11)
+    vm.Run(`
+    	console.log("The value of def is " + def);
+    	// The value of def is 11
+    `)
+
+Set a string
+
+    vm.Set("xyzzy", "Nothing happens.")
+    vm.Run(`
+    	console.log(xyzzy.length); // 16
+    `)
+
+Get the value of an expression
+
+    value, _ = vm.Run("xyzzy.length")
+    {
+    	// value is an int64 with a value of 16
+    	value, _ := value.ToInteger()
+    }
+
+An error happens
+
+    value, err = vm.Run("abcdefghijlmnopqrstuvwxyz.length")
+    if err != nil {
+    	// err = ReferenceError: abcdefghijlmnopqrstuvwxyz is not defined
+    	// If there is an error, then value.IsUndefined() is true
+    	...
+    }
+
+Set a Go function
+
+    vm.Set("sayHello", func(call otto.FunctionCall) otto.Value {
+        fmt.Printf("Hello, %s.\n", call.Argument(0).String())
+        return otto.Value{}
+    })
+
+Set a Go function that returns something useful
+
+    vm.Set("twoPlus", func(call otto.FunctionCall) otto.Value {
+        right, _ := call.Argument(0).ToInteger()
+        result, _ := vm.ToValue(2 + right)
+        return result
+    })
+
+Use the functions in JavaScript
+
+    result, _ = vm.Run(`
+        sayHello("Xyzzy");      // Hello, Xyzzy.
+        sayHello();             // Hello, undefined
+
+        result = twoPlus(2.0); // 4
+    `)
+
+Parser
+
+A separate parser is available in the parser package if you're just interested in building an AST.
+
+http://godoc.org/github.com/robertkrimen/otto/parser
+
+Parse and return an AST
+
+    filename := "" // A filename is optional
+    src := `
+        // Sample xyzzy example
+        (function(){
+            if (3.14159 > 0) {
+                console.log("Hello, World.");
+                return;
+            }
+
+            var xyzzy = NaN;
+            console.log("Nothing happens.");
+            return xyzzy;
+        })();
+    `
+
+    // Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+    program, err := parser.ParseFile(nil, filename, src, 0)
+
+otto
+
+You can run (Go) JavaScript from the commandline with: http://github.com/robertkrimen/otto/tree/master/otto
+
+	$ go get -v github.com/robertkrimen/otto/otto
+
+Run JavaScript by entering some source on stdin or by giving otto a filename:
+
+	$ otto example.js
+
+underscore
+
+Optionally include the JavaScript utility-belt library, underscore, with this import:
+
+	import (
+		"github.com/robertkrimen/otto"
+		_ "github.com/robertkrimen/otto/underscore"
+	)
+
+	// Now every otto runtime will come loaded with underscore
+
+For more information: http://github.com/robertkrimen/otto/tree/master/underscore
+
+Caveat Emptor
+
+The following are some limitations with otto:
+
+    * "use strict" will parse, but does nothing.
+    * The regular expression engine (re2/regexp) is not fully compatible with the ECMA5 specification.
+    * Otto targets ES5. ES6 features (eg: Typed Arrays) are not supported.
+
+Regular Expression Incompatibility
+
+Go translates JavaScript-style regular expressions into something that is "regexp" compatible via `parser.TransformRegExp`.
+Unfortunately, RegExp requires backtracking for some patterns, and backtracking is not supported by the standard Go engine: https://code.google.com/p/re2/wiki/Syntax
+
+Therefore, the following syntax is incompatible:
+
+    (?=)  // Lookahead (positive), currently a parsing error
+    (?!)  // Lookahead (backhead), currently a parsing error
+    \1    // Backreference (\1, \2, \3, ...), currently a parsing error
+
+A brief discussion of these limitations: "Regexp (?!re)" https://groups.google.com/forum/?fromgroups=#%21topic/golang-nuts/7qgSDWPIh_E
+
+More information about re2: https://code.google.com/p/re2/
+
+In addition to the above, re2 (Go) has a different definition for \s: [\t\n\f\r ].
+The JavaScript definition, on the other hand, also includes \v, Unicode "Separator, Space", etc.
+
+Halting Problem
+
+If you want to stop long running executions (like third-party code), you can use the interrupt channel to do this:
+
+    package main
+
+    import (
+        "errors"
+        "fmt"
+        "os"
+        "time"
+
+        "github.com/robertkrimen/otto"
+    )
+
+    var halt = errors.New("Stahp")
+
+    func main() {
+        runUnsafe(`var abc = [];`)
+        runUnsafe(`
+        while (true) {
+            // Loop forever
+        }`)
+    }
+
+    func runUnsafe(unsafe string) {
+        start := time.Now()
+        defer func() {
+            duration := time.Since(start)
+            if caught := recover(); caught != nil {
+                if caught == halt {
+                    fmt.Fprintf(os.Stderr, "Some code took to long! Stopping after: %v\n", duration)
+                    return
+                }
+                panic(caught) // Something else happened, repanic!
+            }
+            fmt.Fprintf(os.Stderr, "Ran code successfully: %v\n", duration)
+        }()
+
+        vm := otto.New()
+        vm.Interrupt = make(chan func(), 1) // The buffer prevents blocking
+
+        go func() {
+            time.Sleep(2 * time.Second) // Stop after two seconds
+            vm.Interrupt <- func() {
+                panic(halt)
+            }
+        }()
+
+        vm.Run(unsafe) // Here be dragons (risky code)
+    }
+
+Where is setTimeout/setInterval?
+
+These timing functions are not actually part of the ECMA-262 specification. Typically, they belong to the `windows` object (in the browser).
+It would not be difficult to provide something like these via Go, but you probably want to wrap otto in an event loop in that case.
+
+For an example of how this could be done in Go with otto, see natto:
+
+http://github.com/robertkrimen/natto
+
+Here is some more discussion of the issue:
+
+* http://book.mixu.net/node/ch2.html
+
+* http://en.wikipedia.org/wiki/Reentrancy_%28computing%29
+
+* http://aaroncrane.co.uk/2009/02/perl_safe_signals/
+
+*/
+package otto
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/registry"
+)
+
+// Otto is the representation of the JavaScript runtime. Each instance of Otto has a self-contained namespace.
+type Otto struct {
+	// Interrupt is a channel for interrupting the runtime. You can use this to halt a long running execution, for example.
+	// See "Halting Problem" for more information.
+	Interrupt chan func()
+	runtime   *_runtime
+}
+
+// New will allocate a new JavaScript runtime
+func New() *Otto {
+	self := &Otto{
+		runtime: newContext(),
+	}
+	self.runtime.otto = self
+	self.runtime.traceLimit = 10
+	self.Set("console", self.runtime.newConsole())
+
+	registry.Apply(func(entry registry.Entry) {
+		self.Run(entry.Source())
+	})
+
+	return self
+}
+
+func (otto *Otto) clone() *Otto {
+	self := &Otto{
+		runtime: otto.runtime.clone(),
+	}
+	self.runtime.otto = self
+	return self
+}
+
+// Run will allocate a new JavaScript runtime, run the given source
+// on the allocated runtime, and return the runtime, resulting value, and
+// error (if any).
+//
+// src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST always be in UTF-8.
+//
+// src may also be a Script.
+//
+// src may also be a Program, but if the AST has been modified, then runtime behavior is undefined.
+//
+func Run(src interface{}) (*Otto, Value, error) {
+	otto := New()
+	value, err := otto.Run(src) // This already does safety checking
+	return otto, value, err
+}
+
+// Run will run the given source (parsing it first if necessary), returning the resulting value and error (if any)
+//
+// src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST always be in UTF-8.
+//
+// If the runtime is unable to parse source, then this function will return undefined and the parse error (nothing
+// will be evaluated in this case).
+//
+// src may also be a Script.
+//
+// src may also be a Program, but if the AST has been modified, then runtime behavior is undefined.
+//
+func (self Otto) Run(src interface{}) (Value, error) {
+	value, err := self.runtime.cmpl_run(src, nil)
+	if !value.safe() {
+		value = Value{}
+	}
+	return value, err
+}
+
+// Eval will do the same thing as Run, except without leaving the current scope.
+//
+// By staying in the same scope, the code evaluated has access to everything
+// already defined in the current stack frame. This is most useful in, for
+// example, a debugger call.
+func (self Otto) Eval(src interface{}) (Value, error) {
+	if self.runtime.scope == nil {
+		self.runtime.enterGlobalScope()
+		defer self.runtime.leaveScope()
+	}
+
+	value, err := self.runtime.cmpl_eval(src, nil)
+	if !value.safe() {
+		value = Value{}
+	}
+	return value, err
+}
+
+// Get the value of the top-level binding of the given name.
+//
+// If there is an error (like the binding does not exist), then the value
+// will be undefined.
+func (self Otto) Get(name string) (Value, error) {
+	value := Value{}
+	err := catchPanic(func() {
+		value = self.getValue(name)
+	})
+	if !value.safe() {
+		value = Value{}
+	}
+	return value, err
+}
+
+func (self Otto) getValue(name string) Value {
+	return self.runtime.globalStash.getBinding(name, false)
+}
+
+// Set the top-level binding of the given name to the given value.
+//
+// Set will automatically apply ToValue to the given value in order
+// to convert it to a JavaScript value (type Value).
+//
+// If there is an error (like the binding is read-only, or the ToValue conversion
+// fails), then an error is returned.
+//
+// If the top-level binding does not exist, it will be created.
+func (self Otto) Set(name string, value interface{}) error {
+	{
+		value, err := self.ToValue(value)
+		if err != nil {
+			return err
+		}
+		err = catchPanic(func() {
+			self.setValue(name, value)
+		})
+		return err
+	}
+}
+
+func (self Otto) setValue(name string, value Value) {
+	self.runtime.globalStash.setValue(name, value, false)
+}
+
+func (self Otto) SetDebuggerHandler(fn func(vm *Otto)) {
+	self.runtime.debugger = fn
+}
+
+func (self Otto) SetRandomSource(fn func() float64) {
+	self.runtime.random = fn
+}
+
+// SetStackDepthLimit sets an upper limit to the depth of the JavaScript
+// stack. In simpler terms, this limits the number of "nested" function calls
+// you can make in a particular interpreter instance.
+//
+// Note that this doesn't take into account the Go stack depth. If your
+// JavaScript makes a call to a Go function, otto won't keep track of what
+// happens outside the interpreter. So if your Go function is infinitely
+// recursive, you're still in trouble.
+func (self Otto) SetStackDepthLimit(limit int) {
+	self.runtime.stackLimit = limit
+}
+
+// SetStackTraceLimit sets an upper limit to the number of stack frames that
+// otto will use when formatting an error's stack trace. By default, the limit
+// is 10. This is consistent with V8 and SpiderMonkey.
+//
+// TODO: expose via `Error.stackTraceLimit`
+func (self Otto) SetStackTraceLimit(limit int) {
+	self.runtime.traceLimit = limit
+}
+
+// MakeCustomError creates a new Error object with the given name and message,
+// returning it as a Value.
+func (self Otto) MakeCustomError(name, message string) Value {
+	return self.runtime.toValue(self.runtime.newError(name, self.runtime.toValue(message), 0))
+}
+
+// MakeRangeError creates a new RangeError object with the given message,
+// returning it as a Value.
+func (self Otto) MakeRangeError(message string) Value {
+	return self.runtime.toValue(self.runtime.newRangeError(self.runtime.toValue(message)))
+}
+
+// MakeSyntaxError creates a new SyntaxError object with the given message,
+// returning it as a Value.
+func (self Otto) MakeSyntaxError(message string) Value {
+	return self.runtime.toValue(self.runtime.newSyntaxError(self.runtime.toValue(message)))
+}
+
+// MakeTypeError creates a new TypeError object with the given message,
+// returning it as a Value.
+func (self Otto) MakeTypeError(message string) Value {
+	return self.runtime.toValue(self.runtime.newTypeError(self.runtime.toValue(message)))
+}
+
+// Context is a structure that contains information about the current execution
+// context.
+type Context struct {
+	Filename   string
+	Line       int
+	Column     int
+	Callee     string
+	Symbols    map[string]Value
+	This       Value
+	Stacktrace []string
+}
+
+// Context returns the current execution context of the vm, traversing up to
+// ten stack frames, and skipping any innermost native function stack frames.
+func (self Otto) Context() Context {
+	return self.ContextSkip(10, true)
+}
+
+// ContextLimit returns the current execution context of the vm, with a
+// specific limit on the number of stack frames to traverse, skipping any
+// innermost native function stack frames.
+func (self Otto) ContextLimit(limit int) Context {
+	return self.ContextSkip(limit, true)
+}
+
+// ContextSkip returns the current execution context of the vm, with a
+// specific limit on the number of stack frames to traverse, optionally
+// skipping any innermost native function stack frames.
+func (self Otto) ContextSkip(limit int, skipNative bool) (ctx Context) {
+	// Ensure we are operating in a scope
+	if self.runtime.scope == nil {
+		self.runtime.enterGlobalScope()
+		defer self.runtime.leaveScope()
+	}
+
+	scope := self.runtime.scope
+	frame := scope.frame
+
+	for skipNative && frame.native && scope.outer != nil {
+		scope = scope.outer
+		frame = scope.frame
+	}
+
+	// Get location information
+	ctx.Filename = "<unknown>"
+	ctx.Callee = frame.callee
+
+	switch {
+	case frame.native:
+		ctx.Filename = frame.nativeFile
+		ctx.Line = frame.nativeLine
+		ctx.Column = 0
+	case frame.file != nil:
+		ctx.Filename = "<anonymous>"
+
+		if p := frame.file.Position(file.Idx(frame.offset)); p != nil {
+			ctx.Line = p.Line
+			ctx.Column = p.Column
+
+			if p.Filename != "" {
+				ctx.Filename = p.Filename
+			}
+		}
+	}
+
+	// Get the current scope this Value
+	ctx.This = toValue_object(scope.this)
+
+	// Build stacktrace (up to 10 levels deep)
+	ctx.Symbols = make(map[string]Value)
+	ctx.Stacktrace = append(ctx.Stacktrace, frame.location())
+	for limit != 0 {
+		// Get variables
+		stash := scope.lexical
+		for {
+			for _, name := range getStashProperties(stash) {
+				if _, ok := ctx.Symbols[name]; !ok {
+					ctx.Symbols[name] = stash.getBinding(name, true)
+				}
+			}
+			stash = stash.outer()
+			if stash == nil || stash.outer() == nil {
+				break
+			}
+		}
+
+		scope = scope.outer
+		if scope == nil {
+			break
+		}
+		if scope.frame.offset >= 0 {
+			ctx.Stacktrace = append(ctx.Stacktrace, scope.frame.location())
+		}
+		limit--
+	}
+
+	return
+}
+
+// Call the given JavaScript with a given this and arguments.
+//
+// If this is nil, then some special handling takes place to determine the proper
+// this value, falling back to a "standard" invocation if necessary (where this is
+// undefined).
+//
+// If source begins with "new " (A lowercase new followed by a space), then
+// Call will invoke the function constructor rather than performing a function call.
+// In this case, the this argument has no effect.
+//
+//      // value is a String object
+//      value, _ := vm.Call("Object", nil, "Hello, World.")
+//
+//      // Likewise...
+//      value, _ := vm.Call("new Object", nil, "Hello, World.")
+//
+//      // This will perform a concat on the given array and return the result
+//      // value is [ 1, 2, 3, undefined, 4, 5, 6, 7, "abc" ]
+//      value, _ := vm.Call(`[ 1, 2, 3, undefined, 4 ].concat`, nil, 5, 6, 7, "abc")
+//
+func (self Otto) Call(source string, this interface{}, argumentList ...interface{}) (Value, error) {
+
+	thisValue := Value{}
+
+	construct := false
+	if strings.HasPrefix(source, "new ") {
+		source = source[4:]
+		construct = true
+	}
+
+	// FIXME enterGlobalScope
+	self.runtime.enterGlobalScope()
+	defer func() {
+		self.runtime.leaveScope()
+	}()
+
+	if !construct && this == nil {
+		program, err := self.runtime.cmpl_parse("", source+"()", nil)
+		if err == nil {
+			if node, ok := program.body[0].(*_nodeExpressionStatement); ok {
+				if node, ok := node.expression.(*_nodeCallExpression); ok {
+					var value Value
+					err := catchPanic(func() {
+						value = self.runtime.cmpl_evaluate_nodeCallExpression(node, argumentList)
+					})
+					if err != nil {
+						return Value{}, err
+					}
+					return value, nil
+				}
+			}
+		}
+	} else {
+		value, err := self.ToValue(this)
+		if err != nil {
+			return Value{}, err
+		}
+		thisValue = value
+	}
+
+	{
+		this := thisValue
+
+		fn, err := self.Run(source)
+		if err != nil {
+			return Value{}, err
+		}
+
+		if construct {
+			result, err := fn.constructSafe(self.runtime, this, argumentList...)
+			if err != nil {
+				return Value{}, err
+			}
+			return result, nil
+		}
+
+		result, err := fn.Call(this, argumentList...)
+		if err != nil {
+			return Value{}, err
+		}
+		return result, nil
+	}
+}
+
+// Object will run the given source and return the result as an object.
+//
+// For example, accessing an existing object:
+//
+//		object, _ := vm.Object(`Number`)
+//
+// Or, creating a new object:
+//
+//		object, _ := vm.Object(`({ xyzzy: "Nothing happens." })`)
+//
+// Or, creating and assigning an object:
+//
+//		object, _ := vm.Object(`xyzzy = {}`)
+//		object.Set("volume", 11)
+//
+// If there is an error (like the source does not result in an object), then
+// nil and an error is returned.
+func (self Otto) Object(source string) (*Object, error) {
+	value, err := self.runtime.cmpl_run(source, nil)
+	if err != nil {
+		return nil, err
+	}
+	if value.IsObject() {
+		return value.Object(), nil
+	}
+	return nil, fmt.Errorf("value is not an object")
+}
+
+// ToValue will convert an interface{} value to a value digestible by otto/JavaScript.
+func (self Otto) ToValue(value interface{}) (Value, error) {
+	return self.runtime.safeToValue(value)
+}
+
+// Copy will create a copy/clone of the runtime.
+//
+// Copy is useful for saving some time when creating many similar runtimes.
+//
+// This method works by walking the original runtime and cloning each object, scope, stash,
+// etc. into a new runtime.
+//
+// Be on the lookout for memory leaks or inadvertent sharing of resources.
+func (in *Otto) Copy() *Otto {
+	out := &Otto{
+		runtime: in.runtime.clone(),
+	}
+	out.runtime.otto = out
+	return out
+}
+
+// Object{}
+
+// Object is the representation of a JavaScript object.
+type Object struct {
+	object *_object
+	value  Value
+}
+
+func _newObject(object *_object, value Value) *Object {
+	// value MUST contain object!
+	return &Object{
+		object: object,
+		value:  value,
+	}
+}
+
+// Call a method on the object.
+//
+// It is essentially equivalent to:
+//
+//		var method, _ := object.Get(name)
+//		method.Call(object, argumentList...)
+//
+// An undefined value and an error will result if:
+//
+//		1. There is an error during conversion of the argument list
+//		2. The property is not actually a function
+//		3. An (uncaught) exception is thrown
+//
+func (self Object) Call(name string, argumentList ...interface{}) (Value, error) {
+	// TODO: Insert an example using JavaScript below...
+	// e.g., Object("JSON").Call("stringify", ...)
+
+	function, err := self.Get(name)
+	if err != nil {
+		return Value{}, err
+	}
+	return function.Call(self.Value(), argumentList...)
+}
+
+// Value will return self as a value.
+func (self Object) Value() Value {
+	return self.value
+}
+
+// Get the value of the property with the given name.
+func (self Object) Get(name string) (Value, error) {
+	value := Value{}
+	err := catchPanic(func() {
+		value = self.object.get(name)
+	})
+	if !value.safe() {
+		value = Value{}
+	}
+	return value, err
+}
+
+// Set the property of the given name to the given value.
+//
+// An error will result if the setting the property triggers an exception (i.e. read-only),
+// or there is an error during conversion of the given value.
+func (self Object) Set(name string, value interface{}) error {
+	{
+		value, err := self.object.runtime.safeToValue(value)
+		if err != nil {
+			return err
+		}
+		err = catchPanic(func() {
+			self.object.put(name, value, true)
+		})
+		return err
+	}
+}
+
+// Keys gets the keys for the given object.
+//
+// Equivalent to calling Object.keys on the object.
+func (self Object) Keys() []string {
+	var keys []string
+	self.object.enumerate(false, func(name string) bool {
+		keys = append(keys, name)
+		return true
+	})
+	return keys
+}
+
+// KeysByParent gets the keys (and those of the parents) for the given object,
+// in order of "closest" to "furthest".
+func (self Object) KeysByParent() [][]string {
+	var a [][]string
+
+	for o := self.object; o != nil; o = o.prototype {
+		var l []string
+
+		o.enumerate(false, func(name string) bool {
+			l = append(l, name)
+			return true
+		})
+
+		a = append(a, l)
+	}
+
+	return a
+}
+
+// Class will return the class string of the object.
+//
+// The return value will (generally) be one of:
+//
+//		Object
+//		Function
+//		Array
+//		String
+//		Number
+//		Boolean
+//		Date
+//		RegExp
+//
+func (self Object) Class() string {
+	return self.object.class
+}

vendor/github.com/robertkrimen/otto/otto_.go

@@ -0,0 +1,152 @@
+package otto
+
+import (
+	"fmt"
+	"regexp"
+	runtime_ "runtime"
+	"strconv"
+)
+
+var isIdentifier_Regexp *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z\$][a-zA-Z0-9\$]*$`)
+
+func isIdentifier(string_ string) bool {
+	return isIdentifier_Regexp.MatchString(string_)
+}
+
+func (self *_runtime) toValueArray(arguments ...interface{}) []Value {
+	length := len(arguments)
+	if length == 1 {
+		if valueArray, ok := arguments[0].([]Value); ok {
+			return valueArray
+		}
+		return []Value{self.toValue(arguments[0])}
+	}
+
+	valueArray := make([]Value, length)
+	for index, value := range arguments {
+		valueArray[index] = self.toValue(value)
+	}
+
+	return valueArray
+}
+
+func stringToArrayIndex(name string) int64 {
+	index, err := strconv.ParseInt(name, 10, 64)
+	if err != nil {
+		return -1
+	}
+	if index < 0 {
+		return -1
+	}
+	if index >= maxUint32 {
+		// The value 2^32 (or above) is not a valid index because
+		// you cannot store a uint32 length for an index of uint32
+		return -1
+	}
+	return index
+}
+
+func isUint32(value int64) bool {
+	return value >= 0 && value <= maxUint32
+}
+
+func arrayIndexToString(index int64) string {
+	return strconv.FormatInt(index, 10)
+}
+
+func valueOfArrayIndex(array []Value, index int) Value {
+	value, _ := getValueOfArrayIndex(array, index)
+	return value
+}
+
+func getValueOfArrayIndex(array []Value, index int) (Value, bool) {
+	if index >= 0 && index < len(array) {
+		value := array[index]
+		if !value.isEmpty() {
+			return value, true
+		}
+	}
+	return Value{}, false
+}
+
+// A range index can be anything from 0 up to length. It is NOT safe to use as an index
+// to an array, but is useful for slicing and in some ECMA algorithms.
+func valueToRangeIndex(indexValue Value, length int64, negativeIsZero bool) int64 {
+	index := indexValue.number().int64
+	if negativeIsZero {
+		if index < 0 {
+			index = 0
+		}
+		// minimum(index, length)
+		if index >= length {
+			index = length
+		}
+		return index
+	}
+
+	if index < 0 {
+		index += length
+		if index < 0 {
+			index = 0
+		}
+	} else {
+		if index > length {
+			index = length
+		}
+	}
+	return index
+}
+
+func rangeStartEnd(array []Value, size int64, negativeIsZero bool) (start, end int64) {
+	start = valueToRangeIndex(valueOfArrayIndex(array, 0), size, negativeIsZero)
+	if len(array) == 1 {
+		// If there is only the start argument, then end = size
+		end = size
+		return
+	}
+
+	// Assuming the argument is undefined...
+	end = size
+	endValue := valueOfArrayIndex(array, 1)
+	if !endValue.IsUndefined() {
+		// Which it is not, so get the value as an array index
+		end = valueToRangeIndex(endValue, size, negativeIsZero)
+	}
+	return
+}
+
+func rangeStartLength(source []Value, size int64) (start, length int64) {
+	start = valueToRangeIndex(valueOfArrayIndex(source, 0), size, false)
+
+	// Assume the second argument is missing or undefined
+	length = int64(size)
+	if len(source) == 1 {
+		// If there is only the start argument, then length = size
+		return
+	}
+
+	lengthValue := valueOfArrayIndex(source, 1)
+	if !lengthValue.IsUndefined() {
+		// Which it is not, so get the value as an array index
+		length = lengthValue.number().int64
+	}
+	return
+}
+
+func hereBeDragons(arguments ...interface{}) string {
+	pc, _, _, _ := runtime_.Caller(1) // nolint: dogsled
+	name := runtime_.FuncForPC(pc).Name()
+	message := fmt.Sprintf("Here be dragons -- %s", name)
+	if len(arguments) > 0 {
+		message += ": "
+		argument0 := fmt.Sprintf("%s", arguments[0])
+		if len(arguments) == 1 {
+			message += argument0
+		} else {
+			message += fmt.Sprintf(argument0, arguments[1:]...)
+		}
+	} else {
+		message += "."
+	}
+	return message
+}

vendor/github.com/robertkrimen/otto/parser/Makefile

@@ -0,0 +1,4 @@
+.PHONY: test
+
+test:
+	go test

vendor/github.com/robertkrimen/otto/parser/README.markdown

@@ -0,0 +1,190 @@
+# parser
+--
+    import "github.com/robertkrimen/otto/parser"
+
+Package parser implements a parser for JavaScript.
+
+    import (
+        "github.com/robertkrimen/otto/parser"
+    )
+
+Parse and return an AST
+
+    filename := "" // A filename is optional
+    src := `
+        // Sample xyzzy example
+        (function(){
+            if (3.14159 > 0) {
+                console.log("Hello, World.");
+                return;
+            }
+
+            var xyzzy = NaN;
+            console.log("Nothing happens.");
+            return xyzzy;
+        })();
+    `
+
+    // Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+    program, err := parser.ParseFile(nil, filename, src, 0)
+
+
+### Warning
+
+The parser and AST interfaces are still works-in-progress (particularly where
+node types are concerned) and may change in the future.
+
+## Usage
+
+#### func  ParseFile
+
+```go
+func ParseFile(fileSet *file.FileSet, filename string, src interface{}, mode Mode) (*ast.Program, error)
+```
+ParseFile parses the source code of a single JavaScript/ECMAScript source file
+and returns the corresponding ast.Program node.
+
+If fileSet == nil, ParseFile parses source without a FileSet. If fileSet != nil,
+ParseFile first adds filename and src to fileSet.
+
+The filename argument is optional and is used for labelling errors, etc.
+
+src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST
+always be in UTF-8.
+
+    // Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+    program, err := parser.ParseFile(nil, "", `if (abc > 1) {}`, 0)
+
+#### func  ParseFunction
+
+```go
+func ParseFunction(parameterList, body string) (*ast.FunctionLiteral, error)
+```
+ParseFunction parses a given parameter list and body as a function and returns
+the corresponding ast.FunctionLiteral node.
+
+The parameter list, if any, should be a comma-separated list of identifiers.
+
+#### func  ReadSource
+
+```go
+func ReadSource(filename string, src interface{}) ([]byte, error)
+```
+
+#### func  TransformRegExp
+
+```go
+func TransformRegExp(pattern string) (string, error)
+```
+TransformRegExp transforms a JavaScript pattern into a Go "regexp" pattern.
+
+re2 (Go) cannot do backtracking, so the presence of a lookahead (?=) (?!) or
+backreference (\1, \2, ...) will cause an error.
+
+re2 (Go) has a different definition for \s: [\t\n\f\r ]. The JavaScript
+definition, on the other hand, also includes \v, Unicode "Separator, Space",
+etc.
+
+If the pattern is invalid (not valid even in JavaScript), then this function
+returns the empty string and an error.
+
+If the pattern is valid, but incompatible (contains a lookahead or
+backreference), then this function returns the transformation (a non-empty
+string) AND an error.
+
+#### type Error
+
+```go
+type Error struct {
+	Position file.Position
+	Message  string
+}
+```
+
+An Error represents a parsing error. It includes the position where the error
+occurred and a message/description.
+
+#### func (Error) Error
+
+```go
+func (self Error) Error() string
+```
+
+#### type ErrorList
+
+```go
+type ErrorList []*Error
+```
+
+ErrorList is a list of *Errors.
+
+#### func (*ErrorList) Add
+
+```go
+func (self *ErrorList) Add(position file.Position, msg string)
+```
+Add adds an Error with given position and message to an ErrorList.
+
+#### func (ErrorList) Err
+
+```go
+func (self ErrorList) Err() error
+```
+Err returns an error equivalent to this ErrorList. If the list is empty, Err
+returns nil.
+
+#### func (ErrorList) Error
+
+```go
+func (self ErrorList) Error() string
+```
+Error implements the Error interface.
+
+#### func (ErrorList) Len
+
+```go
+func (self ErrorList) Len() int
+```
+
+#### func (ErrorList) Less
+
+```go
+func (self ErrorList) Less(i, j int) bool
+```
+
+#### func (*ErrorList) Reset
+
+```go
+func (self *ErrorList) Reset()
+```
+Reset resets an ErrorList to no errors.
+
+#### func (ErrorList) Sort
+
+```go
+func (self ErrorList) Sort()
+```
+
+#### func (ErrorList) Swap
+
+```go
+func (self ErrorList) Swap(i, j int)
+```
+
+#### type Mode
+
+```go
+type Mode uint
+```
+
+A Mode value is a set of flags (or 0). They control optional parser
+functionality.
+
+```go
+const (
+	IgnoreRegExpErrors Mode = 1 << iota // Ignore RegExp compatibility errors (allow backtracking)
+)
+```
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/parser/error.go

@@ -0,0 +1,173 @@
+package parser
+
+import (
+	"fmt"
+	"sort"
+
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+)
+
+const (
+	err_UnexpectedToken      = "Unexpected token %v"
+	err_UnexpectedEndOfInput = "Unexpected end of input"
+)
+
+//    UnexpectedNumber:  'Unexpected number',
+//    UnexpectedString:  'Unexpected string',
+//    UnexpectedIdentifier:  'Unexpected identifier',
+//    UnexpectedReserved:  'Unexpected reserved word',
+//    NewlineAfterThrow:  'Illegal newline after throw',
+//    InvalidRegExp: 'Invalid regular expression',
+//    UnterminatedRegExp:  'Invalid regular expression: missing /',
+//    InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
+//    InvalidLHSInForIn:  'Invalid left-hand side in for-in',
+//    MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+//    NoCatchOrFinally:  'Missing catch or finally after try',
+//    UnknownLabel: 'Undefined label \'%0\'',
+//    Redeclaration: '%0 \'%1\' has already been declared',
+//    IllegalContinue: 'Illegal continue statement',
+//    IllegalBreak: 'Illegal break statement',
+//    IllegalReturn: 'Illegal return statement',
+//    StrictModeWith:  'Strict mode code may not include a with statement',
+//    StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
+//    StrictVarName:  'Variable name may not be eval or arguments in strict mode',
+//    StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
+//    StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+//    StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
+//    StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
+//    StrictDelete:  'Delete of an unqualified identifier in strict mode.',
+//    StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
+//    AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
+//    AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
+//    StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
+//    StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+//    StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+//    StrictReservedWord:  'Use of future reserved word in strict mode'
+
+// A SyntaxError is a description of an ECMAScript syntax error.
+
+// An Error represents a parsing error. It includes the position where the error occurred and a message/description.
+type Error struct {
+	Position file.Position
+	Message  string
+}
+
+// FIXME Should this be "SyntaxError"?
+
+func (self Error) Error() string {
+	filename := self.Position.Filename
+	if filename == "" {
+		filename = "(anonymous)"
+	}
+	return fmt.Sprintf("%s: Line %d:%d %s",
+		filename,
+		self.Position.Line,
+		self.Position.Column,
+		self.Message,
+	)
+}
+
+func (self *_parser) error(place interface{}, msg string, msgValues ...interface{}) *Error {
+	var idx file.Idx
+	switch place := place.(type) {
+	case int:
+		idx = self.idxOf(place)
+	case file.Idx:
+		if place == 0 {
+			idx = self.idxOf(self.chrOffset)
+		} else {
+			idx = place
+		}
+	default:
+		panic(fmt.Errorf("error(%T, ...)", place))
+	}
+
+	position := self.position(idx)
+	msg = fmt.Sprintf(msg, msgValues...)
+	self.errors.Add(position, msg)
+	return self.errors[len(self.errors)-1]
+}
+
+func (self *_parser) errorUnexpected(idx file.Idx, chr rune) error {
+	if chr == -1 {
+		return self.error(idx, err_UnexpectedEndOfInput)
+	}
+	return self.error(idx, err_UnexpectedToken, token.ILLEGAL)
+}
+
+func (self *_parser) errorUnexpectedToken(tkn token.Token) error {
+	switch tkn {
+	case token.EOF:
+		return self.error(file.Idx(0), err_UnexpectedEndOfInput)
+	}
+	value := tkn.String()
+	switch tkn {
+	case token.BOOLEAN, token.NULL:
+		value = self.literal
+	case token.IDENTIFIER:
+		return self.error(self.idx, "Unexpected identifier")
+	case token.KEYWORD:
+		// TODO Might be a future reserved word
+		return self.error(self.idx, "Unexpected reserved word")
+	case token.NUMBER:
+		return self.error(self.idx, "Unexpected number")
+	case token.STRING:
+		return self.error(self.idx, "Unexpected string")
+	}
+	return self.error(self.idx, err_UnexpectedToken, value)
+}
+
+// ErrorList is a list of *Errors.
+type ErrorList []*Error // nolint: errname
+
+// Add adds an Error with given position and message to an ErrorList.
+func (self *ErrorList) Add(position file.Position, msg string) {
+	*self = append(*self, &Error{position, msg})
+}
+
+// Reset resets an ErrorList to no errors.
+func (self *ErrorList) Reset() { *self = (*self)[0:0] }
+
+func (self ErrorList) Len() int      { return len(self) }
+func (self ErrorList) Swap(i, j int) { self[i], self[j] = self[j], self[i] }
+func (self ErrorList) Less(i, j int) bool {
+	x := &self[i].Position
+	y := &self[j].Position
+	if x.Filename < y.Filename {
+		return true
+	}
+	if x.Filename == y.Filename {
+		if x.Line < y.Line {
+			return true
+		}
+		if x.Line == y.Line {
+			return x.Column < y.Column
+		}
+	}
+	return false
+}
+
+func (self ErrorList) Sort() {
+	sort.Sort(self)
+}
+
+// Error implements the Error interface.
+func (self ErrorList) Error() string {
+	switch len(self) {
+	case 0:
+		return "no errors"
+	case 1:
+		return self[0].Error()
+	}
+	return fmt.Sprintf("%s (and %d more errors)", self[0].Error(), len(self)-1)
+}
+
+// Err returns an error equivalent to this ErrorList.
+// If the list is empty, Err returns nil.
+func (self ErrorList) Err() error {
+	if len(self) == 0 {
+		return nil
+	}
+	return self
+}

vendor/github.com/robertkrimen/otto/parser/expression.go

@@ -0,0 +1,1005 @@
+package parser
+
+import (
+	"regexp"
+
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+)
+
+func (self *_parser) parseIdentifier() *ast.Identifier {
+	literal := self.literal
+	idx := self.idx
+	if self.mode&StoreComments != 0 {
+		self.comments.MarkComments(ast.LEADING)
+	}
+	self.next()
+	exp := &ast.Identifier{
+		Name: literal,
+		Idx:  idx,
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(exp)
+	}
+
+	return exp
+}
+
+func (self *_parser) parsePrimaryExpression() ast.Expression {
+	literal := self.literal
+	idx := self.idx
+	switch self.token {
+	case token.IDENTIFIER:
+		self.next()
+		if len(literal) > 1 {
+			tkn, strict := token.IsKeyword(literal)
+			if tkn == token.KEYWORD {
+				if !strict {
+					self.error(idx, "Unexpected reserved word")
+				}
+			}
+		}
+		return &ast.Identifier{
+			Name: literal,
+			Idx:  idx,
+		}
+	case token.NULL:
+		self.next()
+		return &ast.NullLiteral{
+			Idx:     idx,
+			Literal: literal,
+		}
+	case token.BOOLEAN:
+		self.next()
+		value := false
+		switch literal {
+		case "true":
+			value = true
+		case "false":
+			value = false
+		default:
+			self.error(idx, "Illegal boolean literal")
+		}
+		return &ast.BooleanLiteral{
+			Idx:     idx,
+			Literal: literal,
+			Value:   value,
+		}
+	case token.STRING:
+		self.next()
+		value, err := parseStringLiteral(literal[1 : len(literal)-1])
+		if err != nil {
+			self.error(idx, err.Error())
+		}
+		return &ast.StringLiteral{
+			Idx:     idx,
+			Literal: literal,
+			Value:   value,
+		}
+	case token.NUMBER:
+		self.next()
+		value, err := parseNumberLiteral(literal)
+		if err != nil {
+			self.error(idx, err.Error())
+			value = 0
+		}
+		return &ast.NumberLiteral{
+			Idx:     idx,
+			Literal: literal,
+			Value:   value,
+		}
+	case token.SLASH, token.QUOTIENT_ASSIGN:
+		return self.parseRegExpLiteral()
+	case token.LEFT_BRACE:
+		return self.parseObjectLiteral()
+	case token.LEFT_BRACKET:
+		return self.parseArrayLiteral()
+	case token.LEFT_PARENTHESIS:
+		self.expect(token.LEFT_PARENTHESIS)
+		expression := self.parseExpression()
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.expect(token.RIGHT_PARENTHESIS)
+		return expression
+	case token.THIS:
+		self.next()
+		return &ast.ThisExpression{
+			Idx: idx,
+		}
+	case token.FUNCTION:
+		return self.parseFunction(false)
+	}
+
+	self.errorUnexpectedToken(self.token)
+	self.nextStatement()
+	return &ast.BadExpression{From: idx, To: self.idx}
+}
+
+func (self *_parser) parseRegExpLiteral() *ast.RegExpLiteral {
+
+	offset := self.chrOffset - 1 // Opening slash already gotten
+	if self.token == token.QUOTIENT_ASSIGN {
+		offset -= 1 // =
+	}
+	idx := self.idxOf(offset)
+
+	pattern, err := self.scanString(offset)
+	endOffset := self.chrOffset
+
+	self.next()
+	if err == nil {
+		pattern = pattern[1 : len(pattern)-1]
+	}
+
+	flags := ""
+	if self.token == token.IDENTIFIER { // gim
+
+		flags = self.literal
+		self.next()
+		endOffset = self.chrOffset - 1
+	}
+
+	var value string
+	// TODO 15.10
+	{
+		// Test during parsing that this is a valid regular expression
+		// Sorry, (?=) and (?!) are invalid (for now)
+		pattern, err := TransformRegExp(pattern)
+		if err != nil {
+			if pattern == "" || self.mode&IgnoreRegExpErrors == 0 {
+				self.error(idx, "Invalid regular expression: %s", err.Error())
+			}
+		} else {
+			_, err = regexp.Compile(pattern)
+			if err != nil {
+				// We should not get here, ParseRegExp should catch any errors
+				self.error(idx, "Invalid regular expression: %s", err.Error()[22:]) // Skip redundant "parse regexp error"
+			} else {
+				value = pattern
+			}
+		}
+	}
+
+	literal := self.str[offset:endOffset]
+
+	return &ast.RegExpLiteral{
+		Idx:     idx,
+		Literal: literal,
+		Pattern: pattern,
+		Flags:   flags,
+		Value:   value,
+	}
+}
+
+func (self *_parser) parseVariableDeclaration(declarationList *[]*ast.VariableExpression) ast.Expression {
+
+	if self.token != token.IDENTIFIER {
+		idx := self.expect(token.IDENTIFIER)
+		self.nextStatement()
+		return &ast.BadExpression{From: idx, To: self.idx}
+	}
+
+	literal := self.literal
+	idx := self.idx
+	self.next()
+	node := &ast.VariableExpression{
+		Name: literal,
+		Idx:  idx,
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(node)
+	}
+
+	if declarationList != nil {
+		*declarationList = append(*declarationList, node)
+	}
+
+	if self.token == token.ASSIGN {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		node.Initializer = self.parseAssignmentExpression()
+	}
+
+	return node
+}
+
+func (self *_parser) parseVariableDeclarationList(var_ file.Idx) []ast.Expression {
+
+	var declarationList []*ast.VariableExpression // Avoid bad expressions
+	var list []ast.Expression
+
+	for {
+		if self.mode&StoreComments != 0 {
+			self.comments.MarkComments(ast.LEADING)
+		}
+		decl := self.parseVariableDeclaration(&declarationList)
+		list = append(list, decl)
+		if self.token != token.COMMA {
+			break
+		}
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+	}
+
+	self.scope.declare(&ast.VariableDeclaration{
+		Var:  var_,
+		List: declarationList,
+	})
+
+	return list
+}
+
+func (self *_parser) parseObjectPropertyKey() (string, string) {
+	idx, tkn, literal := self.idx, self.token, self.literal
+	value := ""
+	if self.mode&StoreComments != 0 {
+		self.comments.MarkComments(ast.KEY)
+	}
+	self.next()
+
+	switch tkn {
+	case token.IDENTIFIER:
+		value = literal
+	case token.NUMBER:
+		var err error
+		_, err = parseNumberLiteral(literal)
+		if err != nil {
+			self.error(idx, err.Error())
+		} else {
+			value = literal
+		}
+	case token.STRING:
+		var err error
+		value, err = parseStringLiteral(literal[1 : len(literal)-1])
+		if err != nil {
+			self.error(idx, err.Error())
+		}
+	default:
+		// null, false, class, etc.
+		if matchIdentifier.MatchString(literal) {
+			value = literal
+		}
+	}
+	return literal, value
+}
+
+func (self *_parser) parseObjectProperty() ast.Property {
+	literal, value := self.parseObjectPropertyKey()
+	if literal == "get" && self.token != token.COLON {
+		idx := self.idx
+		_, value := self.parseObjectPropertyKey()
+		parameterList := self.parseFunctionParameterList()
+
+		node := &ast.FunctionLiteral{
+			Function:      idx,
+			ParameterList: parameterList,
+		}
+		self.parseFunctionBlock(node)
+		return ast.Property{
+			Key:   value,
+			Kind:  "get",
+			Value: node,
+		}
+	} else if literal == "set" && self.token != token.COLON {
+		idx := self.idx
+		_, value := self.parseObjectPropertyKey()
+		parameterList := self.parseFunctionParameterList()
+
+		node := &ast.FunctionLiteral{
+			Function:      idx,
+			ParameterList: parameterList,
+		}
+		self.parseFunctionBlock(node)
+		return ast.Property{
+			Key:   value,
+			Kind:  "set",
+			Value: node,
+		}
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.MarkComments(ast.COLON)
+	}
+	self.expect(token.COLON)
+
+	exp := ast.Property{
+		Key:   value,
+		Kind:  "value",
+		Value: self.parseAssignmentExpression(),
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(exp.Value)
+	}
+	return exp
+}
+
+func (self *_parser) parseObjectLiteral() ast.Expression {
+	var value []ast.Property
+	idx0 := self.expect(token.LEFT_BRACE)
+	for self.token != token.RIGHT_BRACE && self.token != token.EOF {
+		value = append(value, self.parseObjectProperty())
+		if self.token == token.COMMA {
+			if self.mode&StoreComments != 0 {
+				self.comments.Unset()
+			}
+			self.next()
+			continue
+		}
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.MarkComments(ast.FINAL)
+	}
+	idx1 := self.expect(token.RIGHT_BRACE)
+
+	return &ast.ObjectLiteral{
+		LeftBrace:  idx0,
+		RightBrace: idx1,
+		Value:      value,
+	}
+}
+
+func (self *_parser) parseArrayLiteral() ast.Expression {
+	idx0 := self.expect(token.LEFT_BRACKET)
+	var value []ast.Expression
+	for self.token != token.RIGHT_BRACKET && self.token != token.EOF {
+		if self.token == token.COMMA {
+			// This kind of comment requires a special empty expression node.
+			empty := &ast.EmptyExpression{Begin: self.idx, End: self.idx}
+
+			if self.mode&StoreComments != 0 {
+				self.comments.SetExpression(empty)
+				self.comments.Unset()
+			}
+			value = append(value, empty)
+			self.next()
+			continue
+		}
+
+		exp := self.parseAssignmentExpression()
+
+		value = append(value, exp)
+		if self.token != token.RIGHT_BRACKET {
+			if self.mode&StoreComments != 0 {
+				self.comments.Unset()
+			}
+			self.expect(token.COMMA)
+		}
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.MarkComments(ast.FINAL)
+	}
+	idx1 := self.expect(token.RIGHT_BRACKET)
+
+	return &ast.ArrayLiteral{
+		LeftBracket:  idx0,
+		RightBracket: idx1,
+		Value:        value,
+	}
+}
+
+func (self *_parser) parseArgumentList() (argumentList []ast.Expression, idx0, idx1 file.Idx) {
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	idx0 = self.expect(token.LEFT_PARENTHESIS)
+	if self.token != token.RIGHT_PARENTHESIS {
+		for {
+			exp := self.parseAssignmentExpression()
+			if self.mode&StoreComments != 0 {
+				self.comments.SetExpression(exp)
+			}
+			argumentList = append(argumentList, exp)
+			if self.token != token.COMMA {
+				break
+			}
+			if self.mode&StoreComments != 0 {
+				self.comments.Unset()
+			}
+			self.next()
+		}
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	idx1 = self.expect(token.RIGHT_PARENTHESIS)
+	return
+}
+
+func (self *_parser) parseCallExpression(left ast.Expression) ast.Expression {
+	argumentList, idx0, idx1 := self.parseArgumentList()
+	exp := &ast.CallExpression{
+		Callee:           left,
+		LeftParenthesis:  idx0,
+		ArgumentList:     argumentList,
+		RightParenthesis: idx1,
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(exp)
+	}
+	return exp
+}
+
+func (self *_parser) parseDotMember(left ast.Expression) ast.Expression {
+	period := self.expect(token.PERIOD)
+
+	literal := self.literal
+	idx := self.idx
+
+	if !matchIdentifier.MatchString(literal) {
+		self.expect(token.IDENTIFIER)
+		self.nextStatement()
+		return &ast.BadExpression{From: period, To: self.idx}
+	}
+
+	self.next()
+
+	return &ast.DotExpression{
+		Left: left,
+		Identifier: &ast.Identifier{
+			Idx:  idx,
+			Name: literal,
+		},
+	}
+}
+
+func (self *_parser) parseBracketMember(left ast.Expression) ast.Expression {
+	idx0 := self.expect(token.LEFT_BRACKET)
+	member := self.parseExpression()
+	idx1 := self.expect(token.RIGHT_BRACKET)
+	return &ast.BracketExpression{
+		LeftBracket:  idx0,
+		Left:         left,
+		Member:       member,
+		RightBracket: idx1,
+	}
+}
+
+func (self *_parser) parseNewExpression() ast.Expression {
+	idx := self.expect(token.NEW)
+	callee := self.parseLeftHandSideExpression()
+	node := &ast.NewExpression{
+		New:    idx,
+		Callee: callee,
+	}
+	if self.token == token.LEFT_PARENTHESIS {
+		argumentList, idx0, idx1 := self.parseArgumentList()
+		node.ArgumentList = argumentList
+		node.LeftParenthesis = idx0
+		node.RightParenthesis = idx1
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(node)
+	}
+
+	return node
+}
+
+func (self *_parser) parseLeftHandSideExpression() ast.Expression {
+
+	var left ast.Expression
+	if self.token == token.NEW {
+		left = self.parseNewExpression()
+	} else {
+		if self.mode&StoreComments != 0 {
+			self.comments.MarkComments(ast.LEADING)
+			self.comments.MarkPrimary()
+		}
+		left = self.parsePrimaryExpression()
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(left)
+	}
+
+	for {
+		if self.token == token.PERIOD {
+			left = self.parseDotMember(left)
+		} else if self.token == token.LEFT_BRACKET {
+			left = self.parseBracketMember(left)
+		} else {
+			break
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseLeftHandSideExpressionAllowCall() ast.Expression {
+
+	allowIn := self.scope.allowIn
+	self.scope.allowIn = true
+	defer func() {
+		self.scope.allowIn = allowIn
+	}()
+
+	var left ast.Expression
+	if self.token == token.NEW {
+		var newComments []*ast.Comment
+		if self.mode&StoreComments != 0 {
+			newComments = self.comments.FetchAll()
+			self.comments.MarkComments(ast.LEADING)
+			self.comments.MarkPrimary()
+		}
+		left = self.parseNewExpression()
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(left, newComments, ast.LEADING)
+		}
+	} else {
+		if self.mode&StoreComments != 0 {
+			self.comments.MarkComments(ast.LEADING)
+			self.comments.MarkPrimary()
+		}
+		left = self.parsePrimaryExpression()
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.SetExpression(left)
+	}
+
+	for {
+		if self.token == token.PERIOD {
+			left = self.parseDotMember(left)
+		} else if self.token == token.LEFT_BRACKET {
+			left = self.parseBracketMember(left)
+		} else if self.token == token.LEFT_PARENTHESIS {
+			left = self.parseCallExpression(left)
+		} else {
+			break
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parsePostfixExpression() ast.Expression {
+	operand := self.parseLeftHandSideExpressionAllowCall()
+
+	switch self.token {
+	case token.INCREMENT, token.DECREMENT:
+		// Make sure there is no line terminator here
+		if self.implicitSemicolon {
+			break
+		}
+		tkn := self.token
+		idx := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		switch operand.(type) {
+		case *ast.Identifier, *ast.DotExpression, *ast.BracketExpression:
+		default:
+			self.error(idx, "Invalid left-hand side in assignment")
+			self.nextStatement()
+			return &ast.BadExpression{From: idx, To: self.idx}
+		}
+		exp := &ast.UnaryExpression{
+			Operator: tkn,
+			Idx:      idx,
+			Operand:  operand,
+			Postfix:  true,
+		}
+
+		if self.mode&StoreComments != 0 {
+			self.comments.SetExpression(exp)
+		}
+
+		return exp
+	}
+
+	return operand
+}
+
+func (self *_parser) parseUnaryExpression() ast.Expression {
+
+	switch self.token {
+	case token.PLUS, token.MINUS, token.NOT, token.BITWISE_NOT:
+		fallthrough
+	case token.DELETE, token.VOID, token.TYPEOF:
+		tkn := self.token
+		idx := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		return &ast.UnaryExpression{
+			Operator: tkn,
+			Idx:      idx,
+			Operand:  self.parseUnaryExpression(),
+		}
+	case token.INCREMENT, token.DECREMENT:
+		tkn := self.token
+		idx := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		operand := self.parseUnaryExpression()
+		switch operand.(type) {
+		case *ast.Identifier, *ast.DotExpression, *ast.BracketExpression:
+		default:
+			self.error(idx, "Invalid left-hand side in assignment")
+			self.nextStatement()
+			return &ast.BadExpression{From: idx, To: self.idx}
+		}
+		return &ast.UnaryExpression{
+			Operator: tkn,
+			Idx:      idx,
+			Operand:  operand,
+		}
+	}
+
+	return self.parsePostfixExpression()
+}
+
+func (self *_parser) parseMultiplicativeExpression() ast.Expression {
+	next := self.parseUnaryExpression
+	left := next()
+
+	for self.token == token.MULTIPLY || self.token == token.SLASH ||
+		self.token == token.REMAINDER {
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseAdditiveExpression() ast.Expression {
+	next := self.parseMultiplicativeExpression
+	left := next()
+
+	for self.token == token.PLUS || self.token == token.MINUS {
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseShiftExpression() ast.Expression {
+	next := self.parseAdditiveExpression
+	left := next()
+
+	for self.token == token.SHIFT_LEFT || self.token == token.SHIFT_RIGHT ||
+		self.token == token.UNSIGNED_SHIFT_RIGHT {
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseRelationalExpression() ast.Expression {
+	next := self.parseShiftExpression
+	left := next()
+
+	allowIn := self.scope.allowIn
+	self.scope.allowIn = true
+	defer func() {
+		self.scope.allowIn = allowIn
+	}()
+
+	switch self.token {
+	case token.LESS, token.LESS_OR_EQUAL, token.GREATER, token.GREATER_OR_EQUAL:
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		exp := &ast.BinaryExpression{
+			Operator:   tkn,
+			Left:       left,
+			Right:      self.parseRelationalExpression(),
+			Comparison: true,
+		}
+		return exp
+	case token.INSTANCEOF:
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		exp := &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    self.parseRelationalExpression(),
+		}
+		return exp
+	case token.IN:
+		if !allowIn {
+			return left
+		}
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		exp := &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    self.parseRelationalExpression(),
+		}
+		return exp
+	}
+
+	return left
+}
+
+func (self *_parser) parseEqualityExpression() ast.Expression {
+	next := self.parseRelationalExpression
+	left := next()
+
+	for self.token == token.EQUAL || self.token == token.NOT_EQUAL ||
+		self.token == token.STRICT_EQUAL || self.token == token.STRICT_NOT_EQUAL {
+		tkn := self.token
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator:   tkn,
+			Left:       left,
+			Right:      next(),
+			Comparison: true,
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseBitwiseAndExpression() ast.Expression {
+	next := self.parseEqualityExpression
+	left := next()
+
+	for self.token == token.AND {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		tkn := self.token
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseBitwiseExclusiveOrExpression() ast.Expression {
+	next := self.parseBitwiseAndExpression
+	left := next()
+
+	for self.token == token.EXCLUSIVE_OR {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		tkn := self.token
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseBitwiseOrExpression() ast.Expression {
+	next := self.parseBitwiseExclusiveOrExpression
+	left := next()
+
+	for self.token == token.OR {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		tkn := self.token
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseLogicalAndExpression() ast.Expression {
+	next := self.parseBitwiseOrExpression
+	left := next()
+
+	for self.token == token.LOGICAL_AND {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		tkn := self.token
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseLogicalOrExpression() ast.Expression {
+	next := self.parseLogicalAndExpression
+	left := next()
+
+	for self.token == token.LOGICAL_OR {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		tkn := self.token
+		self.next()
+
+		left = &ast.BinaryExpression{
+			Operator: tkn,
+			Left:     left,
+			Right:    next(),
+		}
+	}
+
+	return left
+}
+
+func (self *_parser) parseConditionlExpression() ast.Expression {
+	left := self.parseLogicalOrExpression()
+
+	if self.token == token.QUESTION_MARK {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+
+		consequent := self.parseAssignmentExpression()
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.expect(token.COLON)
+		exp := &ast.ConditionalExpression{
+			Test:       left,
+			Consequent: consequent,
+			Alternate:  self.parseAssignmentExpression(),
+		}
+
+		return exp
+	}
+
+	return left
+}
+
+func (self *_parser) parseAssignmentExpression() ast.Expression {
+	left := self.parseConditionlExpression()
+	var operator token.Token
+	switch self.token {
+	case token.ASSIGN:
+		operator = self.token
+	case token.ADD_ASSIGN:
+		operator = token.PLUS
+	case token.SUBTRACT_ASSIGN:
+		operator = token.MINUS
+	case token.MULTIPLY_ASSIGN:
+		operator = token.MULTIPLY
+	case token.QUOTIENT_ASSIGN:
+		operator = token.SLASH
+	case token.REMAINDER_ASSIGN:
+		operator = token.REMAINDER
+	case token.AND_ASSIGN:
+		operator = token.AND
+	case token.AND_NOT_ASSIGN:
+		operator = token.AND_NOT
+	case token.OR_ASSIGN:
+		operator = token.OR
+	case token.EXCLUSIVE_OR_ASSIGN:
+		operator = token.EXCLUSIVE_OR
+	case token.SHIFT_LEFT_ASSIGN:
+		operator = token.SHIFT_LEFT
+	case token.SHIFT_RIGHT_ASSIGN:
+		operator = token.SHIFT_RIGHT
+	case token.UNSIGNED_SHIFT_RIGHT_ASSIGN:
+		operator = token.UNSIGNED_SHIFT_RIGHT
+	}
+
+	if operator != 0 {
+		idx := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		switch left.(type) {
+		case *ast.Identifier, *ast.DotExpression, *ast.BracketExpression:
+		default:
+			self.error(left.Idx0(), "Invalid left-hand side in assignment")
+			self.nextStatement()
+			return &ast.BadExpression{From: idx, To: self.idx}
+		}
+
+		exp := &ast.AssignExpression{
+			Left:     left,
+			Operator: operator,
+			Right:    self.parseAssignmentExpression(),
+		}
+
+		if self.mode&StoreComments != 0 {
+			self.comments.SetExpression(exp)
+		}
+
+		return exp
+	}
+
+	return left
+}
+
+func (self *_parser) parseExpression() ast.Expression {
+	next := self.parseAssignmentExpression
+	left := next()
+
+	if self.token == token.COMMA {
+		sequence := []ast.Expression{left}
+		for {
+			if self.token != token.COMMA {
+				break
+			}
+			self.next()
+			sequence = append(sequence, next())
+		}
+		return &ast.SequenceExpression{
+			Sequence: sequence,
+		}
+	}
+
+	return left
+}

vendor/github.com/robertkrimen/otto/parser/lexer.go

@@ -0,0 +1,865 @@
+package parser
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+)
+
+type _chr struct {
+	value rune
+	width int
+}
+
+var matchIdentifier = regexp.MustCompile(`^[$_\p{L}][$_\p{L}\d}]*$`)
+
+func isDecimalDigit(chr rune) bool {
+	return '0' <= chr && chr <= '9'
+}
+
+func digitValue(chr rune) int {
+	switch {
+	case '0' <= chr && chr <= '9':
+		return int(chr - '0')
+	case 'a' <= chr && chr <= 'f':
+		return int(chr - 'a' + 10)
+	case 'A' <= chr && chr <= 'F':
+		return int(chr - 'A' + 10)
+	}
+	return 16 // Larger than any legal digit value
+}
+
+func isDigit(chr rune, base int) bool {
+	return digitValue(chr) < base
+}
+
+func isIdentifierStart(chr rune) bool {
+	return chr == '$' || chr == '_' || chr == '\\' ||
+		'a' <= chr && chr <= 'z' || 'A' <= chr && chr <= 'Z' ||
+		chr >= utf8.RuneSelf && unicode.IsLetter(chr)
+}
+
+func isIdentifierPart(chr rune) bool {
+	return chr == '$' || chr == '_' || chr == '\\' ||
+		'a' <= chr && chr <= 'z' || 'A' <= chr && chr <= 'Z' ||
+		'0' <= chr && chr <= '9' ||
+		chr >= utf8.RuneSelf && (unicode.IsLetter(chr) || unicode.IsDigit(chr))
+}
+
+func (self *_parser) scanIdentifier() (string, error) {
+	offset := self.chrOffset
+	parse := false
+	for isIdentifierPart(self.chr) {
+		if self.chr == '\\' {
+			distance := self.chrOffset - offset
+			self.read()
+			if self.chr != 'u' {
+				return "", fmt.Errorf("Invalid identifier escape character: %c (%s)", self.chr, string(self.chr))
+			}
+			parse = true
+			var value rune
+			for j := 0; j < 4; j++ {
+				self.read()
+				decimal, ok := hex2decimal(byte(self.chr))
+				if !ok {
+					return "", fmt.Errorf("Invalid identifier escape character: %c (%s)", self.chr, string(self.chr))
+				}
+				value = value<<4 | decimal
+			}
+			if value == '\\' {
+				return "", fmt.Errorf("Invalid identifier escape value: %c (%s)", value, string(value))
+			} else if distance == 0 {
+				if !isIdentifierStart(value) {
+					return "", fmt.Errorf("Invalid identifier escape value: %c (%s)", value, string(value))
+				}
+			} else if distance > 0 {
+				if !isIdentifierPart(value) {
+					return "", fmt.Errorf("Invalid identifier escape value: %c (%s)", value, string(value))
+				}
+			}
+		}
+		self.read()
+	}
+	literal := string(self.str[offset:self.chrOffset])
+	if parse {
+		return parseStringLiteral(literal)
+	}
+	return literal, nil
+}
+
+// 7.2
+func isLineWhiteSpace(chr rune) bool {
+	switch chr {
+	case '\u0009', '\u000b', '\u000c', '\u0020', '\u00a0', '\ufeff':
+		return true
+	case '\u000a', '\u000d', '\u2028', '\u2029':
+		return false
+	case '\u0085':
+		return false
+	}
+	return unicode.IsSpace(chr)
+}
+
+// 7.3
+func isLineTerminator(chr rune) bool {
+	switch chr {
+	case '\u000a', '\u000d', '\u2028', '\u2029':
+		return true
+	}
+	return false
+}
+
+func (self *_parser) scan() (tkn token.Token, literal string, idx file.Idx) {
+
+	self.implicitSemicolon = false
+
+	for {
+		self.skipWhiteSpace()
+
+		idx = self.idxOf(self.chrOffset)
+		insertSemicolon := false
+
+		switch chr := self.chr; {
+		case isIdentifierStart(chr):
+			var err error
+			literal, err = self.scanIdentifier()
+			if err != nil {
+				tkn = token.ILLEGAL
+				break
+			}
+			if len(literal) > 1 {
+				// Keywords are longer than 1 character, avoid lookup otherwise
+				var strict bool
+				tkn, strict = token.IsKeyword(literal)
+
+				switch tkn {
+
+				case 0: // Not a keyword
+					if literal == "true" || literal == "false" {
+						self.insertSemicolon = true
+						tkn = token.BOOLEAN
+						return
+					} else if literal == "null" {
+						self.insertSemicolon = true
+						tkn = token.NULL
+						return
+					}
+
+				case token.KEYWORD:
+					tkn = token.KEYWORD
+					if strict {
+						// TODO If strict and in strict mode, then this is not a break
+						break
+					}
+					return
+
+				case
+					token.THIS,
+					token.BREAK,
+					token.THROW, // A newline after a throw is not allowed, but we need to detect it
+					token.RETURN,
+					token.CONTINUE,
+					token.DEBUGGER:
+					self.insertSemicolon = true
+					return
+
+				default:
+					return
+
+				}
+			}
+			self.insertSemicolon = true
+			tkn = token.IDENTIFIER
+			return
+		case '0' <= chr && chr <= '9':
+			self.insertSemicolon = true
+			tkn, literal = self.scanNumericLiteral(false)
+			return
+		default:
+			self.read()
+			switch chr {
+			case -1:
+				if self.insertSemicolon {
+					self.insertSemicolon = false
+					self.implicitSemicolon = true
+				}
+				tkn = token.EOF
+			case '\r', '\n', '\u2028', '\u2029':
+				self.insertSemicolon = false
+				self.implicitSemicolon = true
+				self.comments.AtLineBreak()
+				continue
+			case ':':
+				tkn = token.COLON
+			case '.':
+				if digitValue(self.chr) < 10 {
+					insertSemicolon = true
+					tkn, literal = self.scanNumericLiteral(true)
+				} else {
+					tkn = token.PERIOD
+				}
+			case ',':
+				tkn = token.COMMA
+			case ';':
+				tkn = token.SEMICOLON
+			case '(':
+				tkn = token.LEFT_PARENTHESIS
+			case ')':
+				tkn = token.RIGHT_PARENTHESIS
+				insertSemicolon = true
+			case '[':
+				tkn = token.LEFT_BRACKET
+			case ']':
+				tkn = token.RIGHT_BRACKET
+				insertSemicolon = true
+			case '{':
+				tkn = token.LEFT_BRACE
+			case '}':
+				tkn = token.RIGHT_BRACE
+				insertSemicolon = true
+			case '+':
+				tkn = self.switch3(token.PLUS, token.ADD_ASSIGN, '+', token.INCREMENT)
+				if tkn == token.INCREMENT {
+					insertSemicolon = true
+				}
+			case '-':
+				tkn = self.switch3(token.MINUS, token.SUBTRACT_ASSIGN, '-', token.DECREMENT)
+				if tkn == token.DECREMENT {
+					insertSemicolon = true
+				}
+			case '*':
+				tkn = self.switch2(token.MULTIPLY, token.MULTIPLY_ASSIGN)
+			case '/':
+				if self.chr == '/' {
+					if self.mode&StoreComments != 0 {
+						literal := string(self.readSingleLineComment())
+						self.comments.AddComment(ast.NewComment(literal, self.idx))
+						continue
+					}
+					self.skipSingleLineComment()
+					continue
+				} else if self.chr == '*' {
+					if self.mode&StoreComments != 0 {
+						literal = string(self.readMultiLineComment())
+						self.comments.AddComment(ast.NewComment(literal, self.idx))
+						continue
+					}
+					self.skipMultiLineComment()
+					continue
+				} else {
+					// Could be division, could be RegExp literal
+					tkn = self.switch2(token.SLASH, token.QUOTIENT_ASSIGN)
+					insertSemicolon = true
+				}
+			case '%':
+				tkn = self.switch2(token.REMAINDER, token.REMAINDER_ASSIGN)
+			case '^':
+				tkn = self.switch2(token.EXCLUSIVE_OR, token.EXCLUSIVE_OR_ASSIGN)
+			case '<':
+				tkn = self.switch4(token.LESS, token.LESS_OR_EQUAL, '<', token.SHIFT_LEFT, token.SHIFT_LEFT_ASSIGN)
+			case '>':
+				tkn = self.switch6(token.GREATER, token.GREATER_OR_EQUAL, '>', token.SHIFT_RIGHT, token.SHIFT_RIGHT_ASSIGN, '>', token.UNSIGNED_SHIFT_RIGHT, token.UNSIGNED_SHIFT_RIGHT_ASSIGN)
+			case '=':
+				tkn = self.switch2(token.ASSIGN, token.EQUAL)
+				if tkn == token.EQUAL && self.chr == '=' {
+					self.read()
+					tkn = token.STRICT_EQUAL
+				}
+			case '!':
+				tkn = self.switch2(token.NOT, token.NOT_EQUAL)
+				if tkn == token.NOT_EQUAL && self.chr == '=' {
+					self.read()
+					tkn = token.STRICT_NOT_EQUAL
+				}
+			case '&':
+				if self.chr == '^' {
+					self.read()
+					tkn = self.switch2(token.AND_NOT, token.AND_NOT_ASSIGN)
+				} else {
+					tkn = self.switch3(token.AND, token.AND_ASSIGN, '&', token.LOGICAL_AND)
+				}
+			case '|':
+				tkn = self.switch3(token.OR, token.OR_ASSIGN, '|', token.LOGICAL_OR)
+			case '~':
+				tkn = token.BITWISE_NOT
+			case '?':
+				tkn = token.QUESTION_MARK
+			case '"', '\'':
+				insertSemicolon = true
+				tkn = token.STRING
+				var err error
+				literal, err = self.scanString(self.chrOffset - 1)
+				if err != nil {
+					tkn = token.ILLEGAL
+				}
+			default:
+				self.errorUnexpected(idx, chr)
+				tkn = token.ILLEGAL
+			}
+		}
+		self.insertSemicolon = insertSemicolon
+		return
+	}
+}
+
+func (self *_parser) switch2(tkn0, tkn1 token.Token) token.Token {
+	if self.chr == '=' {
+		self.read()
+		return tkn1
+	}
+	return tkn0
+}
+
+func (self *_parser) switch3(tkn0, tkn1 token.Token, chr2 rune, tkn2 token.Token) token.Token {
+	if self.chr == '=' {
+		self.read()
+		return tkn1
+	}
+	if self.chr == chr2 {
+		self.read()
+		return tkn2
+	}
+	return tkn0
+}
+
+func (self *_parser) switch4(tkn0, tkn1 token.Token, chr2 rune, tkn2, tkn3 token.Token) token.Token {
+	if self.chr == '=' {
+		self.read()
+		return tkn1
+	}
+	if self.chr == chr2 {
+		self.read()
+		if self.chr == '=' {
+			self.read()
+			return tkn3
+		}
+		return tkn2
+	}
+	return tkn0
+}
+
+func (self *_parser) switch6(tkn0, tkn1 token.Token, chr2 rune, tkn2, tkn3 token.Token, chr3 rune, tkn4, tkn5 token.Token) token.Token {
+	if self.chr == '=' {
+		self.read()
+		return tkn1
+	}
+	if self.chr == chr2 {
+		self.read()
+		if self.chr == '=' {
+			self.read()
+			return tkn3
+		}
+		if self.chr == chr3 {
+			self.read()
+			if self.chr == '=' {
+				self.read()
+				return tkn5
+			}
+			return tkn4
+		}
+		return tkn2
+	}
+	return tkn0
+}
+
+func (self *_parser) chrAt(index int) _chr {
+	value, width := utf8.DecodeRuneInString(self.str[index:])
+	return _chr{
+		value: value,
+		width: width,
+	}
+}
+
+func (self *_parser) _peek() rune {
+	if self.offset+1 < self.length {
+		return rune(self.str[self.offset+1])
+	}
+	return -1
+}
+
+func (self *_parser) read() {
+	if self.offset < self.length {
+		self.chrOffset = self.offset
+		chr, width := rune(self.str[self.offset]), 1
+		if chr >= utf8.RuneSelf { // !ASCII
+			chr, width = utf8.DecodeRuneInString(self.str[self.offset:])
+			if chr == utf8.RuneError && width == 1 {
+				self.error(self.chrOffset, "Invalid UTF-8 character")
+			}
+		}
+		self.offset += width
+		self.chr = chr
+	} else {
+		self.chrOffset = self.length
+		self.chr = -1 // EOF
+	}
+}
+
+// This is here since the functions are so similar
+func (self *_RegExp_parser) read() {
+	if self.offset < self.length {
+		self.chrOffset = self.offset
+		chr, width := rune(self.str[self.offset]), 1
+		if chr >= utf8.RuneSelf { // !ASCII
+			chr, width = utf8.DecodeRuneInString(self.str[self.offset:])
+			if chr == utf8.RuneError && width == 1 {
+				self.error(self.chrOffset, "Invalid UTF-8 character")
+			}
+		}
+		self.offset += width
+		self.chr = chr
+	} else {
+		self.chrOffset = self.length
+		self.chr = -1 // EOF
+	}
+}
+
+func (self *_parser) readSingleLineComment() (result []rune) {
+	for self.chr != -1 {
+		self.read()
+		if isLineTerminator(self.chr) {
+			return
+		}
+		result = append(result, self.chr)
+	}
+
+	// Get rid of the trailing -1
+	result = result[:len(result)-1]
+
+	return
+}
+
+func (self *_parser) readMultiLineComment() (result []rune) {
+	self.read()
+	for self.chr >= 0 {
+		chr := self.chr
+		self.read()
+		if chr == '*' && self.chr == '/' {
+			self.read()
+			return
+		}
+
+		result = append(result, chr)
+	}
+
+	self.errorUnexpected(0, self.chr)
+
+	return
+}
+
+func (self *_parser) skipSingleLineComment() {
+	for self.chr != -1 {
+		self.read()
+		if isLineTerminator(self.chr) {
+			return
+		}
+	}
+}
+
+func (self *_parser) skipMultiLineComment() {
+	self.read()
+	for self.chr >= 0 {
+		chr := self.chr
+		self.read()
+		if chr == '*' && self.chr == '/' {
+			self.read()
+			return
+		}
+	}
+
+	self.errorUnexpected(0, self.chr)
+}
+
+func (self *_parser) skipWhiteSpace() {
+	for {
+		switch self.chr {
+		case ' ', '\t', '\f', '\v', '\u00a0', '\ufeff':
+			self.read()
+			continue
+		case '\r':
+			if self._peek() == '\n' {
+				self.comments.AtLineBreak()
+				self.read()
+			}
+			fallthrough
+		case '\u2028', '\u2029', '\n':
+			if self.insertSemicolon {
+				return
+			}
+			self.comments.AtLineBreak()
+			self.read()
+			continue
+		}
+		if self.chr >= utf8.RuneSelf {
+			if unicode.IsSpace(self.chr) {
+				self.read()
+				continue
+			}
+		}
+		break
+	}
+}
+
+func (self *_parser) skipLineWhiteSpace() {
+	for isLineWhiteSpace(self.chr) {
+		self.read()
+	}
+}
+
+func (self *_parser) scanMantissa(base int) {
+	for digitValue(self.chr) < base {
+		self.read()
+	}
+}
+
+func (self *_parser) scanEscape(quote rune) {
+
+	var length, base uint32
+	switch self.chr {
+	//case '0', '1', '2', '3', '4', '5', '6', '7':
+	//    Octal:
+	//    length, base, limit = 3, 8, 255
+	case 'a', 'b', 'f', 'n', 'r', 't', 'v', '\\', '"', '\'', '0':
+		self.read()
+		return
+	case '\r', '\n', '\u2028', '\u2029':
+		self.scanNewline()
+		return
+	case 'x':
+		self.read()
+		length, base = 2, 16
+	case 'u':
+		self.read()
+		length, base = 4, 16
+	default:
+		self.read() // Always make progress
+		return
+	}
+
+	var value uint32
+	for ; length > 0 && self.chr != quote && self.chr >= 0; length-- {
+		digit := uint32(digitValue(self.chr))
+		if digit >= base {
+			break
+		}
+		value = value*base + digit
+		self.read()
+	}
+}
+
+func (self *_parser) scanString(offset int) (string, error) {
+	// " ' /
+	quote := rune(self.str[offset])
+
+	for self.chr != quote {
+		chr := self.chr
+		if chr == '\n' || chr == '\r' || chr == '\u2028' || chr == '\u2029' || chr < 0 {
+			goto newline
+		}
+		self.read()
+		if chr == '\\' {
+			if quote == '/' {
+				if self.chr == '\n' || self.chr == '\r' || self.chr == '\u2028' || self.chr == '\u2029' || self.chr < 0 {
+					goto newline
+				}
+				self.read()
+			} else {
+				self.scanEscape(quote)
+			}
+		} else if chr == '[' && quote == '/' {
+			// Allow a slash (/) in a bracket character class ([...])
+			// TODO Fix this, this is hacky...
+			quote = -1
+		} else if chr == ']' && quote == -1 {
+			quote = '/'
+		}
+	}
+
+	// " ' /
+	self.read()
+
+	return string(self.str[offset:self.chrOffset]), nil
+
+newline:
+	self.scanNewline()
+	err := "String not terminated"
+	if quote == '/' {
+		err = "Invalid regular expression: missing /"
+		self.error(self.idxOf(offset), err)
+	}
+	return "", errors.New(err)
+}
+
+func (self *_parser) scanNewline() {
+	if self.chr == '\r' {
+		self.read()
+		if self.chr != '\n' {
+			return
+		}
+	}
+	self.read()
+}
+
+func hex2decimal(chr byte) (value rune, ok bool) {
+	{
+		chr := rune(chr)
+		switch {
+		case '0' <= chr && chr <= '9':
+			return chr - '0', true
+		case 'a' <= chr && chr <= 'f':
+			return chr - 'a' + 10, true
+		case 'A' <= chr && chr <= 'F':
+			return chr - 'A' + 10, true
+		}
+		return
+	}
+}
+
+func parseNumberLiteral(literal string) (value interface{}, err error) {
+	// TODO Is Uint okay? What about -MAX_UINT
+	value, err = strconv.ParseInt(literal, 0, 64)
+	if err == nil {
+		return value, nil
+	}
+
+	parseIntErr := err // Save this first error, just in case
+
+	value, err = strconv.ParseFloat(literal, 64)
+	if err == nil {
+		return value, nil
+	} else if err.(*strconv.NumError).Err == strconv.ErrRange {
+		// Infinity, etc.
+		return value, nil
+	}
+
+	err = parseIntErr
+
+	if err.(*strconv.NumError).Err == strconv.ErrRange {
+		if len(literal) > 2 && literal[0] == '0' && (literal[1] == 'X' || literal[1] == 'x') {
+			// Could just be a very large number (e.g. 0x8000000000000000)
+			var value float64
+			literal = literal[2:]
+			for _, chr := range literal {
+				digit := digitValue(chr)
+				if digit >= 16 {
+					return nil, errors.New("Illegal numeric literal")
+				}
+				value = value*16 + float64(digit)
+			}
+			return value, nil
+		}
+	}
+
+	return nil, errors.New("Illegal numeric literal")
+}
+
+func parseStringLiteral(literal string) (string, error) {
+	// Best case scenario...
+	if literal == "" {
+		return "", nil
+	}
+
+	// Slightly less-best case scenario...
+	if !strings.ContainsRune(literal, '\\') {
+		return literal, nil
+	}
+
+	str := literal
+	buffer := bytes.NewBuffer(make([]byte, 0, 3*len(literal)/2))
+
+	for len(str) > 0 {
+		switch chr := str[0]; {
+		// We do not explicitly handle the case of the quote
+		// value, which can be: " ' /
+		// This assumes we're already passed a partially well-formed literal
+		case chr >= utf8.RuneSelf:
+			chr, size := utf8.DecodeRuneInString(str)
+			buffer.WriteRune(chr)
+			str = str[size:]
+			continue
+		case chr != '\\':
+			buffer.WriteByte(chr)
+			str = str[1:]
+			continue
+		}
+
+		if len(str) <= 1 {
+			panic("len(str) <= 1")
+		}
+		chr := str[1]
+		var value rune
+		if chr >= utf8.RuneSelf {
+			str = str[1:]
+			var size int
+			value, size = utf8.DecodeRuneInString(str)
+			str = str[size:] // \ + <character>
+		} else {
+			str = str[2:] // \<character>
+			switch chr {
+			case 'b':
+				value = '\b'
+			case 'f':
+				value = '\f'
+			case 'n':
+				value = '\n'
+			case 'r':
+				value = '\r'
+			case 't':
+				value = '\t'
+			case 'v':
+				value = '\v'
+			case 'x', 'u':
+				size := 0
+				switch chr {
+				case 'x':
+					size = 2
+				case 'u':
+					size = 4
+				}
+				if len(str) < size {
+					return "", fmt.Errorf("invalid escape: \\%s: len(%q) != %d", string(chr), str, size)
+				}
+				for j := 0; j < size; j++ {
+					decimal, ok := hex2decimal(str[j])
+					if !ok {
+						return "", fmt.Errorf("invalid escape: \\%s: %q", string(chr), str[:size])
+					}
+					value = value<<4 | decimal
+				}
+				str = str[size:]
+				if chr == 'x' {
+					break
+				}
+				if value > utf8.MaxRune {
+					panic("value > utf8.MaxRune")
+				}
+			case '0':
+				if len(str) == 0 || '0' > str[0] || str[0] > '7' {
+					value = 0
+					break
+				}
+				fallthrough
+			case '1', '2', '3', '4', '5', '6', '7':
+				// TODO strict
+				value = rune(chr) - '0'
+				j := 0
+				for ; j < 2; j++ {
+					if len(str) < j+1 {
+						break
+					}
+					chr := str[j]
+					if '0' > chr || chr > '7' {
+						break
+					}
+					decimal := rune(str[j]) - '0'
+					value = (value << 3) | decimal
+				}
+				str = str[j:]
+			case '\\':
+				value = '\\'
+			case '\'', '"':
+				value = rune(chr)
+			case '\r':
+				if len(str) > 0 {
+					if str[0] == '\n' {
+						str = str[1:]
+					}
+				}
+				fallthrough
+			case '\n':
+				continue
+			default:
+				value = rune(chr)
+			}
+		}
+		buffer.WriteRune(value)
+	}
+
+	return buffer.String(), nil
+}
+
+func (self *_parser) scanNumericLiteral(decimalPoint bool) (token.Token, string) {
+
+	offset := self.chrOffset
+	tkn := token.NUMBER
+
+	if decimalPoint {
+		offset--
+		self.scanMantissa(10)
+		goto exponent
+	}
+
+	if self.chr == '0' {
+		offset := self.chrOffset
+		self.read()
+		if self.chr == 'x' || self.chr == 'X' {
+			// Hexadecimal
+			self.read()
+			if isDigit(self.chr, 16) {
+				self.read()
+			} else {
+				return token.ILLEGAL, self.str[offset:self.chrOffset]
+			}
+			self.scanMantissa(16)
+
+			if self.chrOffset-offset <= 2 {
+				// Only "0x" or "0X"
+				self.error(0, "Illegal hexadecimal number")
+			}
+
+			goto hexadecimal
+		} else if self.chr == '.' {
+			// Float
+			goto float
+		} else {
+			// Octal, Float
+			if self.chr == 'e' || self.chr == 'E' {
+				goto exponent
+			}
+			self.scanMantissa(8)
+			if self.chr == '8' || self.chr == '9' {
+				return token.ILLEGAL, self.str[offset:self.chrOffset]
+			}
+			goto octal
+		}
+	}
+
+	self.scanMantissa(10)
+
+float:
+	if self.chr == '.' {
+		self.read()
+		self.scanMantissa(10)
+	}
+
+exponent:
+	if self.chr == 'e' || self.chr == 'E' {
+		self.read()
+		if self.chr == '-' || self.chr == '+' {
+			self.read()
+		}
+		if isDecimalDigit(self.chr) {
+			self.read()
+			self.scanMantissa(10)
+		} else {
+			return token.ILLEGAL, self.str[offset:self.chrOffset]
+		}
+	}
+
+hexadecimal:
+octal:
+	if isIdentifierStart(self.chr) || isDecimalDigit(self.chr) {
+		return token.ILLEGAL, self.str[offset:self.chrOffset]
+	}
+
+	return tkn, self.str[offset:self.chrOffset]
+}

vendor/github.com/robertkrimen/otto/parser/parser.go

@@ -0,0 +1,344 @@
+/*
+Package parser implements a parser for JavaScript.
+
+    import (
+        "github.com/robertkrimen/otto/parser"
+    )
+
+Parse and return an AST
+
+    filename := "" // A filename is optional
+    src := `
+        // Sample xyzzy example
+        (function(){
+            if (3.14159 > 0) {
+                console.log("Hello, World.");
+                return;
+            }
+
+            var xyzzy = NaN;
+            console.log("Nothing happens.");
+            return xyzzy;
+        })();
+    `
+
+    // Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+    program, err := parser.ParseFile(nil, filename, src, 0)
+
+Warning
+
+The parser and AST interfaces are still works-in-progress (particularly where
+node types are concerned) and may change in the future.
+
+*/
+package parser
+
+import (
+	"bytes"
+	"encoding/base64"
+	"errors"
+	"io"
+	"io/ioutil"
+
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/token"
+	"gopkg.in/sourcemap.v1"
+)
+
+// A Mode value is a set of flags (or 0). They control optional parser functionality.
+type Mode uint
+
+const (
+	IgnoreRegExpErrors Mode = 1 << iota // Ignore RegExp compatibility errors (allow backtracking)
+	StoreComments                       // Store the comments from source to the comments map
+)
+
+type _parser struct {
+	str    string
+	length int
+	base   int
+
+	chr       rune // The current character
+	chrOffset int  // The offset of current character
+	offset    int  // The offset after current character (may be greater than 1)
+
+	idx     file.Idx    // The index of token
+	token   token.Token // The token
+	literal string      // The literal of the token, if any
+
+	scope             *_scope
+	insertSemicolon   bool // If we see a newline, then insert an implicit semicolon
+	implicitSemicolon bool // An implicit semicolon exists
+
+	errors ErrorList
+
+	recover struct {
+		// Scratch when trying to seek to the next statement, etc.
+		idx   file.Idx
+		count int
+	}
+
+	mode Mode
+
+	file *file.File
+
+	comments *ast.Comments
+}
+
+type Parser interface {
+	Scan() (tkn token.Token, literal string, idx file.Idx)
+}
+
+func _newParser(filename, src string, base int, sm *sourcemap.Consumer) *_parser {
+	return &_parser{
+		chr:      ' ', // This is set so we can start scanning by skipping whitespace
+		str:      src,
+		length:   len(src),
+		base:     base,
+		file:     file.NewFile(filename, src, base).WithSourceMap(sm),
+		comments: ast.NewComments(),
+	}
+}
+
+// Returns a new Parser.
+func NewParser(filename, src string) Parser {
+	return _newParser(filename, src, 1, nil)
+}
+
+func ReadSource(filename string, src interface{}) ([]byte, error) {
+	if src != nil {
+		switch src := src.(type) {
+		case string:
+			return []byte(src), nil
+		case []byte:
+			return src, nil
+		case *bytes.Buffer:
+			if src != nil {
+				return src.Bytes(), nil
+			}
+		case io.Reader:
+			var bfr bytes.Buffer
+			if _, err := io.Copy(&bfr, src); err != nil {
+				return nil, err
+			}
+			return bfr.Bytes(), nil
+		}
+		return nil, errors.New("invalid source")
+	}
+	return ioutil.ReadFile(filename)
+}
+
+func ReadSourceMap(filename string, src interface{}) (*sourcemap.Consumer, error) {
+	if src == nil {
+		return nil, nil
+	}
+
+	switch src := src.(type) {
+	case string:
+		return sourcemap.Parse(filename, []byte(src))
+	case []byte:
+		return sourcemap.Parse(filename, src)
+	case *bytes.Buffer:
+		if src != nil {
+			return sourcemap.Parse(filename, src.Bytes())
+		}
+	case io.Reader:
+		var bfr bytes.Buffer
+		if _, err := io.Copy(&bfr, src); err != nil {
+			return nil, err
+		}
+		return sourcemap.Parse(filename, bfr.Bytes())
+	case *sourcemap.Consumer:
+		return src, nil
+	}
+
+	return nil, errors.New("invalid sourcemap type")
+}
+
+func ParseFileWithSourceMap(fileSet *file.FileSet, filename string, javascriptSource, sourcemapSource interface{}, mode Mode) (*ast.Program, error) {
+	src, err := ReadSource(filename, javascriptSource)
+	if err != nil {
+		return nil, err
+	}
+
+	if sourcemapSource == nil {
+		lines := bytes.Split(src, []byte("\n"))
+		lastLine := lines[len(lines)-1]
+		if bytes.HasPrefix(lastLine, []byte("//# sourceMappingURL=data:application/json")) {
+			bits := bytes.SplitN(lastLine, []byte(","), 2)
+			if len(bits) == 2 {
+				if d, err := base64.StdEncoding.DecodeString(string(bits[1])); err == nil {
+					sourcemapSource = d
+				}
+			}
+		}
+	}
+
+	sm, err := ReadSourceMap(filename, sourcemapSource)
+	if err != nil {
+		return nil, err
+	}
+
+	base := 1
+	if fileSet != nil {
+		base = fileSet.AddFile(filename, string(src))
+	}
+
+	parser := _newParser(filename, string(src), base, sm)
+	parser.mode = mode
+	program, err := parser.parse()
+	program.Comments = parser.comments.CommentMap
+
+	return program, err
+}
+
+// ParseFile parses the source code of a single JavaScript/ECMAScript source file and returns
+// the corresponding ast.Program node.
+//
+// If fileSet == nil, ParseFile parses source without a FileSet.
+// If fileSet != nil, ParseFile first adds filename and src to fileSet.
+//
+// The filename argument is optional and is used for labelling errors, etc.
+//
+// src may be a string, a byte slice, a bytes.Buffer, or an io.Reader, but it MUST always be in UTF-8.
+//
+//      // Parse some JavaScript, yielding a *ast.Program and/or an ErrorList
+//      program, err := parser.ParseFile(nil, "", `if (abc > 1) {}`, 0)
+//
+func ParseFile(fileSet *file.FileSet, filename string, src interface{}, mode Mode) (*ast.Program, error) {
+	return ParseFileWithSourceMap(fileSet, filename, src, nil, mode)
+}
+
+// ParseFunction parses a given parameter list and body as a function and returns the
+// corresponding ast.FunctionLiteral node.
+//
+// The parameter list, if any, should be a comma-separated list of identifiers.
+//
+func ParseFunction(parameterList, body string) (*ast.FunctionLiteral, error) {
+
+	src := "(function(" + parameterList + ") {\n" + body + "\n})"
+
+	parser := _newParser("", src, 1, nil)
+	program, err := parser.parse()
+	if err != nil {
+		return nil, err
+	}
+
+	return program.Body[0].(*ast.ExpressionStatement).Expression.(*ast.FunctionLiteral), nil
+}
+
+// Scan reads a single token from the source at the current offset, increments the offset and
+// returns the token.Token token, a string literal representing the value of the token (if applicable)
+// and it's current file.Idx index.
+func (self *_parser) Scan() (tkn token.Token, literal string, idx file.Idx) {
+	return self.scan()
+}
+
+func (self *_parser) slice(idx0, idx1 file.Idx) string {
+	from := int(idx0) - self.base
+	to := int(idx1) - self.base
+	if from >= 0 && to <= len(self.str) {
+		return self.str[from:to]
+	}
+
+	return ""
+}
+
+func (self *_parser) parse() (*ast.Program, error) {
+	self.next()
+	program := self.parseProgram()
+	if false {
+		self.errors.Sort()
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(program, self.comments.FetchAll(), ast.TRAILING)
+	}
+
+	return program, self.errors.Err()
+}
+
+func (self *_parser) next() {
+	self.token, self.literal, self.idx = self.scan()
+}
+
+func (self *_parser) optionalSemicolon() {
+	if self.token == token.SEMICOLON {
+		self.next()
+		return
+	}
+
+	if self.implicitSemicolon {
+		self.implicitSemicolon = false
+		return
+	}
+
+	if self.token != token.EOF && self.token != token.RIGHT_BRACE {
+		self.expect(token.SEMICOLON)
+	}
+}
+
+func (self *_parser) semicolon() {
+	if self.token != token.RIGHT_PARENTHESIS && self.token != token.RIGHT_BRACE {
+		if self.implicitSemicolon {
+			self.implicitSemicolon = false
+			return
+		}
+
+		self.expect(token.SEMICOLON)
+	}
+}
+
+func (self *_parser) idxOf(offset int) file.Idx {
+	return file.Idx(self.base + offset)
+}
+
+func (self *_parser) expect(value token.Token) file.Idx {
+	idx := self.idx
+	if self.token != value {
+		self.errorUnexpectedToken(self.token)
+	}
+	self.next()
+	return idx
+}
+
+func lineCount(str string) (int, int) {
+	line, last := 0, -1
+	pair := false
+	for index, chr := range str {
+		switch chr {
+		case '\r':
+			line += 1
+			last = index
+			pair = true
+			continue
+		case '\n':
+			if !pair {
+				line += 1
+			}
+			last = index
+		case '\u2028', '\u2029':
+			line += 1
+			last = index + 2
+		}
+		pair = false
+	}
+	return line, last
+}
+
+func (self *_parser) position(idx file.Idx) file.Position {
+	position := file.Position{}
+	offset := int(idx) - self.base
+	str := self.str[:offset]
+	position.Filename = self.file.Name()
+	line, last := lineCount(str)
+	position.Line = 1 + line
+	if last >= 0 {
+		position.Column = offset - last
+	} else {
+		position.Column = 1 + len(str)
+	}
+
+	return position
+}

vendor/github.com/robertkrimen/otto/parser/regexp.go

@@ -0,0 +1,358 @@
+package parser
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+)
+
+type _RegExp_parser struct {
+	str    string
+	length int
+
+	chr       rune // The current character
+	chrOffset int  // The offset of current character
+	offset    int  // The offset after current character (may be greater than 1)
+
+	errors  []error
+	invalid bool // The input is an invalid JavaScript RegExp
+
+	goRegexp *bytes.Buffer
+}
+
+// TransformRegExp transforms a JavaScript pattern into  a Go "regexp" pattern.
+//
+// re2 (Go) cannot do backtracking, so the presence of a lookahead (?=) (?!) or
+// backreference (\1, \2, ...) will cause an error.
+//
+// re2 (Go) has a different definition for \s: [\t\n\f\r ].
+// The JavaScript definition, on the other hand, also includes \v, Unicode "Separator, Space", etc.
+//
+// If the pattern is invalid (not valid even in JavaScript), then this function
+// returns the empty string and an error.
+//
+// If the pattern is valid, but incompatible (contains a lookahead or backreference),
+// then this function returns the transformation (a non-empty string) AND an error.
+func TransformRegExp(pattern string) (string, error) {
+
+	if pattern == "" {
+		return "", nil
+	}
+
+	// TODO If without \, if without (?=, (?!, then another shortcut
+
+	parser := _RegExp_parser{
+		str:      pattern,
+		length:   len(pattern),
+		goRegexp: bytes.NewBuffer(make([]byte, 0, 3*len(pattern)/2)),
+	}
+	parser.read() // Pull in the first character
+	parser.scan()
+	var err error
+	if len(parser.errors) > 0 {
+		err = parser.errors[0]
+	}
+	if parser.invalid {
+		return "", err
+	}
+
+	// Might not be re2 compatible, but is still a valid JavaScript RegExp
+	return parser.goRegexp.String(), err
+}
+
+func (self *_RegExp_parser) scan() {
+	for self.chr != -1 {
+		switch self.chr {
+		case '\\':
+			self.read()
+			self.scanEscape(false)
+		case '(':
+			self.pass()
+			self.scanGroup()
+		case '[':
+			self.pass()
+			self.scanBracket()
+		case ')':
+			self.error(-1, "Unmatched ')'")
+			self.invalid = true
+			self.pass()
+		default:
+			self.pass()
+		}
+	}
+}
+
+// (...)
+func (self *_RegExp_parser) scanGroup() {
+	str := self.str[self.chrOffset:]
+	if len(str) > 1 { // A possibility of (?= or (?!
+		if str[0] == '?' {
+			if str[1] == '=' || str[1] == '!' {
+				self.error(-1, "re2: Invalid (%s) <lookahead>", self.str[self.chrOffset:self.chrOffset+2])
+			}
+		}
+	}
+	for self.chr != -1 && self.chr != ')' {
+		switch self.chr {
+		case '\\':
+			self.read()
+			self.scanEscape(false)
+		case '(':
+			self.pass()
+			self.scanGroup()
+		case '[':
+			self.pass()
+			self.scanBracket()
+		default:
+			self.pass()
+			continue
+		}
+	}
+	if self.chr != ')' {
+		self.error(-1, "Unterminated group")
+		self.invalid = true
+		return
+	}
+	self.pass()
+}
+
+// [...]
+func (self *_RegExp_parser) scanBracket() {
+	for self.chr != -1 {
+		if self.chr == ']' {
+			break
+		} else if self.chr == '\\' {
+			self.read()
+			self.scanEscape(true)
+			continue
+		}
+		self.pass()
+	}
+	if self.chr != ']' {
+		self.error(-1, "Unterminated character class")
+		self.invalid = true
+		return
+	}
+	self.pass()
+}
+
+// \...
+func (self *_RegExp_parser) scanEscape(inClass bool) {
+	offset := self.chrOffset
+
+	var length, base uint32
+	switch self.chr {
+
+	case '0', '1', '2', '3', '4', '5', '6', '7':
+		var value int64
+		size := 0
+		for {
+			digit := int64(digitValue(self.chr))
+			if digit >= 8 {
+				// Not a valid digit
+				break
+			}
+			value = value*8 + digit
+			self.read()
+			size += 1
+		}
+		if size == 1 { // The number of characters read
+			_, err := self.goRegexp.Write([]byte{'\\', byte(value) + '0'})
+			if err != nil {
+				self.errors = append(self.errors, err)
+			}
+			if value != 0 {
+				// An invalid backreference
+				self.error(-1, "re2: Invalid \\%d <backreference>", value)
+			}
+			return
+		}
+		tmp := []byte{'\\', 'x', '0', 0}
+		if value >= 16 {
+			tmp = tmp[0:2]
+		} else {
+			tmp = tmp[0:3]
+		}
+		tmp = strconv.AppendInt(tmp, value, 16)
+		_, err := self.goRegexp.Write(tmp)
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+		return
+
+	case '8', '9':
+		size := 0
+		for {
+			digit := digitValue(self.chr)
+			if digit >= 10 {
+				// Not a valid digit
+				break
+			}
+			self.read()
+			size += 1
+		}
+		err := self.goRegexp.WriteByte('\\')
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+		_, err = self.goRegexp.WriteString(self.str[offset:self.chrOffset])
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+		self.error(-1, "re2: Invalid \\%s <backreference>", self.str[offset:self.chrOffset])
+		return
+
+	case 'x':
+		self.read()
+		length, base = 2, 16
+
+	case 'u':
+		self.read()
+		length, base = 4, 16
+
+	case 'b':
+		if inClass {
+			_, err := self.goRegexp.Write([]byte{'\\', 'x', '0', '8'})
+			if err != nil {
+				self.errors = append(self.errors, err)
+			}
+			self.read()
+			return
+		}
+		fallthrough
+
+	case 'B':
+		fallthrough
+
+	case 'd', 'D', 's', 'S', 'w', 'W':
+		// This is slightly broken, because ECMAScript
+		// includes \v in \s, \S, while re2 does not
+		fallthrough
+
+	case '\\':
+		fallthrough
+
+	case 'f', 'n', 'r', 't', 'v':
+		err := self.goRegexp.WriteByte('\\')
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+		self.pass()
+		return
+
+	case 'c':
+		self.read()
+		var value int64
+		if 'a' <= self.chr && self.chr <= 'z' {
+			value = int64(self.chr) - 'a' + 1
+		} else if 'A' <= self.chr && self.chr <= 'Z' {
+			value = int64(self.chr) - 'A' + 1
+		} else {
+			err := self.goRegexp.WriteByte('c')
+			if err != nil {
+				self.errors = append(self.errors, err)
+			}
+			return
+		}
+		tmp := []byte{'\\', 'x', '0', 0}
+		if value >= 16 {
+			tmp = tmp[0:2]
+		} else {
+			tmp = tmp[0:3]
+		}
+		tmp = strconv.AppendInt(tmp, value, 16)
+		_, err := self.goRegexp.Write(tmp)
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+		self.read()
+		return
+
+	default:
+		// $ is an identifier character, so we have to have
+		// a special case for it here
+		if self.chr == '$' || !isIdentifierPart(self.chr) {
+			// A non-identifier character needs escaping
+			err := self.goRegexp.WriteByte('\\')
+			if err != nil {
+				self.errors = append(self.errors, err)
+			}
+		} else {
+			// Unescape the character for re2
+		}
+		self.pass()
+		return
+	}
+
+	// Otherwise, we're a \u.... or \x...
+	valueOffset := self.chrOffset
+
+	var value uint32
+	{
+		length := length
+		for ; length > 0; length-- {
+			digit := uint32(digitValue(self.chr))
+			if digit >= base {
+				// Not a valid digit
+				goto skip
+			}
+			value = value*base + digit
+			self.read()
+		}
+	}
+
+	if length == 4 {
+		_, err := self.goRegexp.Write([]byte{
+			'\\',
+			'x',
+			'{',
+			self.str[valueOffset+0],
+			self.str[valueOffset+1],
+			self.str[valueOffset+2],
+			self.str[valueOffset+3],
+			'}',
+		})
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+	} else if length == 2 {
+		_, err := self.goRegexp.Write([]byte{
+			'\\',
+			'x',
+			self.str[valueOffset+0],
+			self.str[valueOffset+1],
+		})
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+	} else {
+		// Should never, ever get here...
+		self.error(-1, "re2: Illegal branch in scanEscape")
+		goto skip
+	}
+
+	return
+
+skip:
+	_, err := self.goRegexp.WriteString(self.str[offset:self.chrOffset])
+	if err != nil {
+		self.errors = append(self.errors, err)
+	}
+}
+
+func (self *_RegExp_parser) pass() {
+	if self.chr != -1 {
+		_, err := self.goRegexp.WriteRune(self.chr)
+		if err != nil {
+			self.errors = append(self.errors, err)
+		}
+	}
+	self.read()
+}
+
+// TODO Better error reporting, use the offset, etc.
+func (self *_RegExp_parser) error(offset int, msg string, msgValues ...interface{}) error {
+	err := fmt.Errorf(msg, msgValues...)
+	self.errors = append(self.errors, err)
+	return err
+}

vendor/github.com/robertkrimen/otto/parser/scope.go

@@ -0,0 +1,44 @@
+package parser
+
+import (
+	"github.com/robertkrimen/otto/ast"
+)
+
+type _scope struct {
+	outer           *_scope
+	allowIn         bool
+	inIteration     bool
+	inSwitch        bool
+	inFunction      bool
+	declarationList []ast.Declaration
+
+	labels []string
+}
+
+func (self *_parser) openScope() {
+	self.scope = &_scope{
+		outer:   self.scope,
+		allowIn: true,
+	}
+}
+
+func (self *_parser) closeScope() {
+	self.scope = self.scope.outer
+}
+
+func (self *_scope) declare(declaration ast.Declaration) {
+	self.declarationList = append(self.declarationList, declaration)
+}
+
+func (self *_scope) hasLabel(name string) bool {
+	for _, label := range self.labels {
+		if label == name {
+			return true
+		}
+	}
+	if self.outer != nil && !self.inFunction {
+		// Crossing a function boundary to look for a label is verboten
+		return self.outer.hasLabel(name)
+	}
+	return false
+}

vendor/github.com/robertkrimen/otto/parser/statement.go

@@ -0,0 +1,938 @@
+package parser
+
+import (
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/token"
+)
+
+func (self *_parser) parseBlockStatement() *ast.BlockStatement {
+	node := &ast.BlockStatement{}
+
+	// Find comments before the leading brace
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, self.comments.FetchAll(), ast.LEADING)
+		self.comments.Unset()
+	}
+
+	node.LeftBrace = self.expect(token.LEFT_BRACE)
+	node.List = self.parseStatementList()
+
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+		self.comments.CommentMap.AddComments(node, self.comments.FetchAll(), ast.FINAL)
+		self.comments.AfterBlock()
+	}
+
+	node.RightBrace = self.expect(token.RIGHT_BRACE)
+
+	// Find comments after the trailing brace
+	if self.mode&StoreComments != 0 {
+		self.comments.ResetLineBreak()
+		self.comments.CommentMap.AddComments(node, self.comments.Fetch(), ast.TRAILING)
+	}
+
+	return node
+}
+
+func (self *_parser) parseEmptyStatement() ast.Statement {
+	idx := self.expect(token.SEMICOLON)
+	return &ast.EmptyStatement{Semicolon: idx}
+}
+
+func (self *_parser) parseStatementList() (list []ast.Statement) {
+	for self.token != token.RIGHT_BRACE && self.token != token.EOF {
+		statement := self.parseStatement()
+		list = append(list, statement)
+	}
+
+	return
+}
+
+func (self *_parser) parseStatement() ast.Statement {
+
+	if self.token == token.EOF {
+		self.errorUnexpectedToken(self.token)
+		return &ast.BadStatement{From: self.idx, To: self.idx + 1}
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.ResetLineBreak()
+	}
+
+	switch self.token {
+	case token.SEMICOLON:
+		return self.parseEmptyStatement()
+	case token.LEFT_BRACE:
+		return self.parseBlockStatement()
+	case token.IF:
+		return self.parseIfStatement()
+	case token.DO:
+		statement := self.parseDoWhileStatement()
+		self.comments.PostProcessNode(statement)
+		return statement
+	case token.WHILE:
+		return self.parseWhileStatement()
+	case token.FOR:
+		return self.parseForOrForInStatement()
+	case token.BREAK:
+		return self.parseBreakStatement()
+	case token.CONTINUE:
+		return self.parseContinueStatement()
+	case token.DEBUGGER:
+		return self.parseDebuggerStatement()
+	case token.WITH:
+		return self.parseWithStatement()
+	case token.VAR:
+		return self.parseVariableStatement()
+	case token.FUNCTION:
+		return self.parseFunctionStatement()
+	case token.SWITCH:
+		return self.parseSwitchStatement()
+	case token.RETURN:
+		return self.parseReturnStatement()
+	case token.THROW:
+		return self.parseThrowStatement()
+	case token.TRY:
+		return self.parseTryStatement()
+	}
+
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+
+	expression := self.parseExpression()
+
+	if identifier, isIdentifier := expression.(*ast.Identifier); isIdentifier && self.token == token.COLON {
+		// LabelledStatement
+		colon := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next() // :
+
+		label := identifier.Name
+		for _, value := range self.scope.labels {
+			if label == value {
+				self.error(identifier.Idx0(), "Label '%s' already exists", label)
+			}
+		}
+		var labelComments []*ast.Comment
+		if self.mode&StoreComments != 0 {
+			labelComments = self.comments.FetchAll()
+		}
+		self.scope.labels = append(self.scope.labels, label) // Push the label
+		statement := self.parseStatement()
+		self.scope.labels = self.scope.labels[:len(self.scope.labels)-1] // Pop the label
+		exp := &ast.LabelledStatement{
+			Label:     identifier,
+			Colon:     colon,
+			Statement: statement,
+		}
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(exp, labelComments, ast.LEADING)
+		}
+
+		return exp
+	}
+
+	self.optionalSemicolon()
+
+	statement := &ast.ExpressionStatement{
+		Expression: expression,
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(statement, comments, ast.LEADING)
+	}
+	return statement
+}
+
+func (self *_parser) parseTryStatement() ast.Statement {
+	var tryComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		tryComments = self.comments.FetchAll()
+	}
+	node := &ast.TryStatement{
+		Try:  self.expect(token.TRY),
+		Body: self.parseBlockStatement(),
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, tryComments, ast.LEADING)
+		self.comments.CommentMap.AddComments(node.Body, self.comments.FetchAll(), ast.TRAILING)
+	}
+
+	if self.token == token.CATCH {
+		catch := self.idx
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		self.expect(token.LEFT_PARENTHESIS)
+		if self.token != token.IDENTIFIER {
+			self.expect(token.IDENTIFIER)
+			self.nextStatement()
+			return &ast.BadStatement{From: catch, To: self.idx}
+		} else {
+			identifier := self.parseIdentifier()
+			self.expect(token.RIGHT_PARENTHESIS)
+			node.Catch = &ast.CatchStatement{
+				Catch:     catch,
+				Parameter: identifier,
+				Body:      self.parseBlockStatement(),
+			}
+
+			if self.mode&StoreComments != 0 {
+				self.comments.CommentMap.AddComments(node.Catch.Body, self.comments.FetchAll(), ast.TRAILING)
+			}
+		}
+	}
+
+	if self.token == token.FINALLY {
+		if self.mode&StoreComments != 0 {
+			self.comments.Unset()
+		}
+		self.next()
+		if self.mode&StoreComments != 0 {
+			tryComments = self.comments.FetchAll()
+		}
+
+		node.Finally = self.parseBlockStatement()
+
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(node.Finally, tryComments, ast.LEADING)
+		}
+	}
+
+	if node.Catch == nil && node.Finally == nil {
+		self.error(node.Try, "Missing catch or finally after try")
+		return &ast.BadStatement{From: node.Try, To: node.Body.Idx1()}
+	}
+
+	return node
+}
+
+func (self *_parser) parseFunctionParameterList() *ast.ParameterList {
+	opening := self.expect(token.LEFT_PARENTHESIS)
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	var list []*ast.Identifier
+	for self.token != token.RIGHT_PARENTHESIS && self.token != token.EOF {
+		if self.token != token.IDENTIFIER {
+			self.expect(token.IDENTIFIER)
+		} else {
+			identifier := self.parseIdentifier()
+			list = append(list, identifier)
+		}
+		if self.token != token.RIGHT_PARENTHESIS {
+			if self.mode&StoreComments != 0 {
+				self.comments.Unset()
+			}
+			self.expect(token.COMMA)
+		}
+	}
+	closing := self.expect(token.RIGHT_PARENTHESIS)
+
+	return &ast.ParameterList{
+		Opening: opening,
+		List:    list,
+		Closing: closing,
+	}
+}
+
+func (self *_parser) parseParameterList() (list []string) {
+	for self.token != token.EOF {
+		if self.token != token.IDENTIFIER {
+			self.expect(token.IDENTIFIER)
+		}
+		list = append(list, self.literal)
+		self.next()
+		if self.token != token.EOF {
+			self.expect(token.COMMA)
+		}
+	}
+	return
+}
+
+func (self *_parser) parseFunctionStatement() *ast.FunctionStatement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	function := &ast.FunctionStatement{
+		Function: self.parseFunction(true),
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(function, comments, ast.LEADING)
+	}
+
+	return function
+}
+
+func (self *_parser) parseFunction(declaration bool) *ast.FunctionLiteral {
+
+	node := &ast.FunctionLiteral{
+		Function: self.expect(token.FUNCTION),
+	}
+
+	var name *ast.Identifier
+	if self.token == token.IDENTIFIER {
+		name = self.parseIdentifier()
+		if declaration {
+			self.scope.declare(&ast.FunctionDeclaration{
+				Function: node,
+			})
+		}
+	} else if declaration {
+		// Use expect error handling
+		self.expect(token.IDENTIFIER)
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	node.Name = name
+	node.ParameterList = self.parseFunctionParameterList()
+	self.parseFunctionBlock(node)
+	node.Source = self.slice(node.Idx0(), node.Idx1())
+
+	return node
+}
+
+func (self *_parser) parseFunctionBlock(node *ast.FunctionLiteral) {
+	{
+		self.openScope()
+		inFunction := self.scope.inFunction
+		self.scope.inFunction = true
+		defer func() {
+			self.scope.inFunction = inFunction
+			self.closeScope()
+		}()
+		node.Body = self.parseBlockStatement()
+		node.DeclarationList = self.scope.declarationList
+	}
+}
+
+func (self *_parser) parseDebuggerStatement() ast.Statement {
+	idx := self.expect(token.DEBUGGER)
+
+	node := &ast.DebuggerStatement{
+		Debugger: idx,
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, self.comments.FetchAll(), ast.TRAILING)
+	}
+
+	self.semicolon()
+	return node
+}
+
+func (self *_parser) parseReturnStatement() ast.Statement {
+	idx := self.expect(token.RETURN)
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+
+	if !self.scope.inFunction {
+		self.error(idx, "Illegal return statement")
+		self.nextStatement()
+		return &ast.BadStatement{From: idx, To: self.idx}
+	}
+
+	node := &ast.ReturnStatement{
+		Return: idx,
+	}
+
+	if !self.implicitSemicolon && self.token != token.SEMICOLON && self.token != token.RIGHT_BRACE && self.token != token.EOF {
+		node.Argument = self.parseExpression()
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+	}
+
+	self.semicolon()
+
+	return node
+}
+
+func (self *_parser) parseThrowStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	idx := self.expect(token.THROW)
+
+	if self.implicitSemicolon {
+		if self.chr == -1 { // Hackish
+			self.error(idx, "Unexpected end of input")
+		} else {
+			self.error(idx, "Illegal newline after throw")
+		}
+		self.nextStatement()
+		return &ast.BadStatement{From: idx, To: self.idx}
+	}
+
+	node := &ast.ThrowStatement{
+		Throw:    self.idx,
+		Argument: self.parseExpression(),
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+	}
+
+	self.semicolon()
+
+	return node
+}
+
+func (self *_parser) parseSwitchStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	self.expect(token.SWITCH)
+	if self.mode&StoreComments != 0 {
+		comments = append(comments, self.comments.FetchAll()...)
+	}
+	self.expect(token.LEFT_PARENTHESIS)
+	node := &ast.SwitchStatement{
+		Discriminant: self.parseExpression(),
+		Default:      -1,
+	}
+	self.expect(token.RIGHT_PARENTHESIS)
+	if self.mode&StoreComments != 0 {
+		comments = append(comments, self.comments.FetchAll()...)
+	}
+
+	self.expect(token.LEFT_BRACE)
+
+	inSwitch := self.scope.inSwitch
+	self.scope.inSwitch = true
+	defer func() {
+		self.scope.inSwitch = inSwitch
+	}()
+
+	for index := 0; self.token != token.EOF; index++ {
+		if self.token == token.RIGHT_BRACE {
+			self.next()
+			break
+		}
+
+		clause := self.parseCaseStatement()
+		if clause.Test == nil {
+			if node.Default != -1 {
+				self.error(clause.Case, "Already saw a default in switch")
+			}
+			node.Default = index
+		}
+		node.Body = append(node.Body, clause)
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+	}
+
+	return node
+}
+
+func (self *_parser) parseWithStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	self.expect(token.WITH)
+	var withComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		withComments = self.comments.FetchAll()
+	}
+
+	self.expect(token.LEFT_PARENTHESIS)
+
+	node := &ast.WithStatement{
+		Object: self.parseExpression(),
+	}
+	self.expect(token.RIGHT_PARENTHESIS)
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+		self.comments.CommentMap.AddComments(node, withComments, ast.WITH)
+	}
+
+	node.Body = self.parseStatement()
+
+	return node
+}
+
+func (self *_parser) parseCaseStatement() *ast.CaseStatement {
+	node := &ast.CaseStatement{
+		Case: self.idx,
+	}
+
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+		self.comments.Unset()
+	}
+
+	if self.token == token.DEFAULT {
+		self.next()
+	} else {
+		self.expect(token.CASE)
+		node.Test = self.parseExpression()
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	self.expect(token.COLON)
+
+	for {
+		if self.token == token.EOF ||
+			self.token == token.RIGHT_BRACE ||
+			self.token == token.CASE ||
+			self.token == token.DEFAULT {
+			break
+		}
+		consequent := self.parseStatement()
+		node.Consequent = append(node.Consequent, consequent)
+	}
+
+	// Link the comments to the case statement
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+	}
+
+	return node
+}
+
+func (self *_parser) parseIterationStatement() ast.Statement {
+	inIteration := self.scope.inIteration
+	self.scope.inIteration = true
+	defer func() {
+		self.scope.inIteration = inIteration
+	}()
+	return self.parseStatement()
+}
+
+func (self *_parser) parseForIn(into ast.Expression) *ast.ForInStatement {
+
+	// Already have consumed "<into> in"
+
+	source := self.parseExpression()
+	self.expect(token.RIGHT_PARENTHESIS)
+	body := self.parseIterationStatement()
+
+	forin := &ast.ForInStatement{
+		Into:   into,
+		Source: source,
+		Body:   body,
+	}
+
+	return forin
+}
+
+func (self *_parser) parseFor(initializer ast.Expression) *ast.ForStatement {
+
+	// Already have consumed "<initializer> ;"
+
+	var test, update ast.Expression
+
+	if self.token != token.SEMICOLON {
+		test = self.parseExpression()
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	self.expect(token.SEMICOLON)
+
+	if self.token != token.RIGHT_PARENTHESIS {
+		update = self.parseExpression()
+	}
+	self.expect(token.RIGHT_PARENTHESIS)
+	body := self.parseIterationStatement()
+
+	forstatement := &ast.ForStatement{
+		Initializer: initializer,
+		Test:        test,
+		Update:      update,
+		Body:        body,
+	}
+
+	return forstatement
+}
+
+func (self *_parser) parseForOrForInStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	idx := self.expect(token.FOR)
+	var forComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		forComments = self.comments.FetchAll()
+	}
+	self.expect(token.LEFT_PARENTHESIS)
+
+	var left []ast.Expression
+
+	forIn := false
+	if self.token != token.SEMICOLON {
+
+		allowIn := self.scope.allowIn
+		self.scope.allowIn = false
+		if self.token == token.VAR {
+			var_ := self.idx
+			var varComments []*ast.Comment
+			if self.mode&StoreComments != 0 {
+				varComments = self.comments.FetchAll()
+				self.comments.Unset()
+			}
+			self.next()
+			list := self.parseVariableDeclarationList(var_)
+			if len(list) == 1 && self.token == token.IN {
+				if self.mode&StoreComments != 0 {
+					self.comments.Unset()
+				}
+				self.next() // in
+				forIn = true
+				left = []ast.Expression{list[0]} // There is only one declaration
+			} else {
+				left = list
+			}
+			if self.mode&StoreComments != 0 {
+				self.comments.CommentMap.AddComments(left[0], varComments, ast.LEADING)
+			}
+		} else {
+			left = append(left, self.parseExpression())
+			if self.token == token.IN {
+				self.next()
+				forIn = true
+			}
+		}
+		self.scope.allowIn = allowIn
+	}
+
+	if forIn {
+		switch left[0].(type) {
+		case *ast.Identifier, *ast.DotExpression, *ast.BracketExpression, *ast.VariableExpression:
+			// These are all acceptable
+		default:
+			self.error(idx, "Invalid left-hand side in for-in")
+			self.nextStatement()
+			return &ast.BadStatement{From: idx, To: self.idx}
+		}
+
+		forin := self.parseForIn(left[0])
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(forin, comments, ast.LEADING)
+			self.comments.CommentMap.AddComments(forin, forComments, ast.FOR)
+		}
+		return forin
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.Unset()
+	}
+	self.expect(token.SEMICOLON)
+	initializer := &ast.SequenceExpression{Sequence: left}
+	forstatement := self.parseFor(initializer)
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(forstatement, comments, ast.LEADING)
+		self.comments.CommentMap.AddComments(forstatement, forComments, ast.FOR)
+	}
+	return forstatement
+}
+
+func (self *_parser) parseVariableStatement() *ast.VariableStatement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	idx := self.expect(token.VAR)
+
+	list := self.parseVariableDeclarationList(idx)
+
+	statement := &ast.VariableStatement{
+		Var:  idx,
+		List: list,
+	}
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(statement, comments, ast.LEADING)
+		self.comments.Unset()
+	}
+	self.semicolon()
+
+	return statement
+}
+
+func (self *_parser) parseDoWhileStatement() ast.Statement {
+	inIteration := self.scope.inIteration
+	self.scope.inIteration = true
+	defer func() {
+		self.scope.inIteration = inIteration
+	}()
+
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	self.expect(token.DO)
+	var doComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		doComments = self.comments.FetchAll()
+	}
+
+	node := &ast.DoWhileStatement{}
+	if self.token == token.LEFT_BRACE {
+		node.Body = self.parseBlockStatement()
+	} else {
+		node.Body = self.parseStatement()
+	}
+
+	self.expect(token.WHILE)
+	var whileComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		whileComments = self.comments.FetchAll()
+	}
+	self.expect(token.LEFT_PARENTHESIS)
+	node.Test = self.parseExpression()
+	self.expect(token.RIGHT_PARENTHESIS)
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+		self.comments.CommentMap.AddComments(node, doComments, ast.DO)
+		self.comments.CommentMap.AddComments(node, whileComments, ast.WHILE)
+	}
+
+	return node
+}
+
+func (self *_parser) parseWhileStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	self.expect(token.WHILE)
+
+	var whileComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		whileComments = self.comments.FetchAll()
+	}
+
+	self.expect(token.LEFT_PARENTHESIS)
+	node := &ast.WhileStatement{
+		Test: self.parseExpression(),
+	}
+	self.expect(token.RIGHT_PARENTHESIS)
+	node.Body = self.parseIterationStatement()
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+		self.comments.CommentMap.AddComments(node, whileComments, ast.WHILE)
+	}
+
+	return node
+}
+
+func (self *_parser) parseIfStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	self.expect(token.IF)
+	var ifComments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		ifComments = self.comments.FetchAll()
+	}
+
+	self.expect(token.LEFT_PARENTHESIS)
+	node := &ast.IfStatement{
+		If:   self.idx,
+		Test: self.parseExpression(),
+	}
+	self.expect(token.RIGHT_PARENTHESIS)
+	if self.token == token.LEFT_BRACE {
+		node.Consequent = self.parseBlockStatement()
+	} else {
+		node.Consequent = self.parseStatement()
+	}
+
+	if self.token == token.ELSE {
+		self.next()
+		node.Alternate = self.parseStatement()
+	}
+
+	if self.mode&StoreComments != 0 {
+		self.comments.CommentMap.AddComments(node, comments, ast.LEADING)
+		self.comments.CommentMap.AddComments(node, ifComments, ast.IF)
+	}
+
+	return node
+}
+
+func (self *_parser) parseSourceElement() ast.Statement {
+	statement := self.parseStatement()
+	return statement
+}
+
+func (self *_parser) parseSourceElements() []ast.Statement {
+	body := []ast.Statement(nil)
+
+	for {
+		if self.token != token.STRING {
+			break
+		}
+		body = append(body, self.parseSourceElement())
+	}
+
+	for self.token != token.EOF {
+		body = append(body, self.parseSourceElement())
+	}
+
+	return body
+}
+
+func (self *_parser) parseProgram() *ast.Program {
+	self.openScope()
+	defer self.closeScope()
+	return &ast.Program{
+		Body:            self.parseSourceElements(),
+		DeclarationList: self.scope.declarationList,
+		File:            self.file,
+	}
+}
+
+func (self *_parser) parseBreakStatement() ast.Statement {
+	var comments []*ast.Comment
+	if self.mode&StoreComments != 0 {
+		comments = self.comments.FetchAll()
+	}
+	idx := self.expect(token.BREAK)
+	semicolon := self.implicitSemicolon
+	if self.token == token.SEMICOLON {
+		semicolon = true
+		self.next()
+	}
+
+	if semicolon || self.token == token.RIGHT_BRACE {
+		self.implicitSemicolon = false
+		if !self.scope.inIteration && !self.scope.inSwitch {
+			goto illegal
+		}
+		breakStatement := &ast.BranchStatement{
+			Idx:   idx,
+			Token: token.BREAK,
+		}
+
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(breakStatement, comments, ast.LEADING)
+			self.comments.CommentMap.AddComments(breakStatement, self.comments.FetchAll(), ast.TRAILING)
+		}
+
+		return breakStatement
+	}
+
+	if self.token == token.IDENTIFIER {
+		identifier := self.parseIdentifier()
+		if !self.scope.hasLabel(identifier.Name) {
+			self.error(idx, "Undefined label '%s'", identifier.Name)
+			return &ast.BadStatement{From: idx, To: identifier.Idx1()}
+		}
+		self.semicolon()
+		breakStatement := &ast.BranchStatement{
+			Idx:   idx,
+			Token: token.BREAK,
+			Label: identifier,
+		}
+		if self.mode&StoreComments != 0 {
+			self.comments.CommentMap.AddComments(breakStatement, comments, ast.LEADING)
+		}
+
+		return breakStatement
+	}
+
+	self.expect(token.IDENTIFIER)
+
+illegal:
+	self.error(idx, "Illegal break statement")
+	self.nextStatement()
+	return &ast.BadStatement{From: idx, To: self.idx}
+}
+
+func (self *_parser) parseContinueStatement() ast.Statement {
+	idx := self.expect(token.CONTINUE)
+	semicolon := self.implicitSemicolon
+	if self.token == token.SEMICOLON {
+		semicolon = true
+		self.next()
+	}
+
+	if semicolon || self.token == token.RIGHT_BRACE {
+		self.implicitSemicolon = false
+		if !self.scope.inIteration {
+			goto illegal
+		}
+		return &ast.BranchStatement{
+			Idx:   idx,
+			Token: token.CONTINUE,
+		}
+	}
+
+	if self.token == token.IDENTIFIER {
+		identifier := self.parseIdentifier()
+		if !self.scope.hasLabel(identifier.Name) {
+			self.error(idx, "Undefined label '%s'", identifier.Name)
+			return &ast.BadStatement{From: idx, To: identifier.Idx1()}
+		}
+		if !self.scope.inIteration {
+			goto illegal
+		}
+		self.semicolon()
+		return &ast.BranchStatement{
+			Idx:   idx,
+			Token: token.CONTINUE,
+			Label: identifier,
+		}
+	}
+
+	self.expect(token.IDENTIFIER)
+
+illegal:
+	self.error(idx, "Illegal continue statement")
+	self.nextStatement()
+	return &ast.BadStatement{From: idx, To: self.idx}
+}
+
+// Find the next statement after an error (recover)
+func (self *_parser) nextStatement() {
+	for {
+		switch self.token {
+		case token.BREAK, token.CONTINUE,
+			token.FOR, token.IF, token.RETURN, token.SWITCH,
+			token.VAR, token.DO, token.TRY, token.WITH,
+			token.WHILE, token.THROW, token.CATCH, token.FINALLY:
+			// Return only if parser made some progress since last
+			// sync or if it has not reached 10 next calls without
+			// progress. Otherwise consume at least one token to
+			// avoid an endless parser loop
+			if self.idx == self.recover.idx && self.recover.count < 10 {
+				self.recover.count++
+				return
+			}
+			if self.idx > self.recover.idx {
+				self.recover.idx = self.idx
+				self.recover.count = 0
+				return
+			}
+			// Reaching here indicates a parser bug, likely an
+			// incorrect token list in this function, but it only
+			// leads to skipping of possibly correct code if a
+			// previous error is present, and thus is preferred
+			// over a non-terminating parse.
+		case token.EOF:
+			return
+		}
+		self.next()
+	}
+}

vendor/github.com/robertkrimen/otto/property.go

@@ -0,0 +1,219 @@
+package otto
+
+// property
+
+type _propertyMode int
+
+const (
+	modeWriteMask     _propertyMode = 0700
+	modeEnumerateMask               = 0070
+	modeConfigureMask               = 0007
+	modeOnMask                      = 0111
+	modeSetMask                     = 0222 // If value is 2, then mode is neither "On" nor "Off"
+)
+
+type _propertyGetSet [2]*_object
+
+var _nilGetSetObject _object = _object{}
+
+type _property struct {
+	value interface{}
+	mode  _propertyMode
+}
+
+func (self _property) writable() bool {
+	return self.mode&modeWriteMask == modeWriteMask&modeOnMask
+}
+
+func (self *_property) writeOn() {
+	self.mode = (self.mode & ^modeWriteMask) | (modeWriteMask & modeOnMask)
+}
+
+func (self *_property) writeOff() {
+	self.mode &= ^modeWriteMask
+}
+
+func (self *_property) writeClear() {
+	self.mode = (self.mode & ^modeWriteMask) | (modeWriteMask & modeSetMask)
+}
+
+func (self _property) writeSet() bool {
+	return 0 == self.mode&modeWriteMask&modeSetMask
+}
+
+func (self _property) enumerable() bool {
+	return self.mode&modeEnumerateMask == modeEnumerateMask&modeOnMask
+}
+
+func (self *_property) enumerateOn() {
+	self.mode = (self.mode & ^modeEnumerateMask) | (modeEnumerateMask & modeOnMask)
+}
+
+func (self *_property) enumerateOff() {
+	self.mode &= ^modeEnumerateMask
+}
+
+func (self _property) enumerateSet() bool {
+	return 0 == self.mode&modeEnumerateMask&modeSetMask
+}
+
+func (self _property) configurable() bool {
+	return self.mode&modeConfigureMask == modeConfigureMask&modeOnMask
+}
+
+func (self *_property) configureOn() {
+	self.mode = (self.mode & ^modeConfigureMask) | (modeConfigureMask & modeOnMask)
+}
+
+func (self *_property) configureOff() {
+	self.mode &= ^modeConfigureMask
+}
+
+func (self _property) configureSet() bool {
+	return 0 == self.mode&modeConfigureMask&modeSetMask
+}
+
+func (self _property) copy() *_property {
+	property := self
+	return &property
+}
+
+func (self _property) get(this *_object) Value {
+	switch value := self.value.(type) {
+	case Value:
+		return value
+	case _propertyGetSet:
+		if value[0] != nil {
+			return value[0].call(toValue(this), nil, false, nativeFrame)
+		}
+	}
+	return Value{}
+}
+
+func (self _property) isAccessorDescriptor() bool {
+	setGet, test := self.value.(_propertyGetSet)
+	return test && (setGet[0] != nil || setGet[1] != nil)
+}
+
+func (self _property) isDataDescriptor() bool {
+	if self.writeSet() { // Either "On" or "Off"
+		return true
+	}
+	value, valid := self.value.(Value)
+	return valid && !value.isEmpty()
+}
+
+func (self _property) isGenericDescriptor() bool {
+	return !(self.isDataDescriptor() || self.isAccessorDescriptor())
+}
+
+func (self _property) isEmpty() bool {
+	return self.mode == 0222 && self.isGenericDescriptor()
+}
+
+// _enumerableValue, _enumerableTrue, _enumerableFalse?
+// .enumerableValue() .enumerableExists()
+
+func toPropertyDescriptor(rt *_runtime, value Value) (descriptor _property) {
+	objectDescriptor := value._object()
+	if objectDescriptor == nil {
+		panic(rt.panicTypeError())
+	}
+
+	{
+		descriptor.mode = modeSetMask // Initially nothing is set
+		if objectDescriptor.hasProperty("enumerable") {
+			if objectDescriptor.get("enumerable").bool() {
+				descriptor.enumerateOn()
+			} else {
+				descriptor.enumerateOff()
+			}
+		}
+
+		if objectDescriptor.hasProperty("configurable") {
+			if objectDescriptor.get("configurable").bool() {
+				descriptor.configureOn()
+			} else {
+				descriptor.configureOff()
+			}
+		}
+
+		if objectDescriptor.hasProperty("writable") {
+			if objectDescriptor.get("writable").bool() {
+				descriptor.writeOn()
+			} else {
+				descriptor.writeOff()
+			}
+		}
+	}
+
+	var getter, setter *_object
+	getterSetter := false
+
+	if objectDescriptor.hasProperty("get") {
+		value := objectDescriptor.get("get")
+		if value.IsDefined() {
+			if !value.isCallable() {
+				panic(rt.panicTypeError())
+			}
+			getter = value._object()
+			getterSetter = true
+		} else {
+			getter = &_nilGetSetObject
+			getterSetter = true
+		}
+	}
+
+	if objectDescriptor.hasProperty("set") {
+		value := objectDescriptor.get("set")
+		if value.IsDefined() {
+			if !value.isCallable() {
+				panic(rt.panicTypeError())
+			}
+			setter = value._object()
+			getterSetter = true
+		} else {
+			setter = &_nilGetSetObject
+			getterSetter = true
+		}
+	}
+
+	if getterSetter {
+		if descriptor.writeSet() {
+			panic(rt.panicTypeError())
+		}
+		descriptor.value = _propertyGetSet{getter, setter}
+	}
+
+	if objectDescriptor.hasProperty("value") {
+		if getterSetter {
+			panic(rt.panicTypeError())
+		}
+		descriptor.value = objectDescriptor.get("value")
+	}
+
+	return
+}
+
+func (self *_runtime) fromPropertyDescriptor(descriptor _property) *_object {
+	object := self.newObject()
+	if descriptor.isDataDescriptor() {
+		object.defineProperty("value", descriptor.value.(Value), 0111, false)
+		object.defineProperty("writable", toValue_bool(descriptor.writable()), 0111, false)
+	} else if descriptor.isAccessorDescriptor() {
+		getSet := descriptor.value.(_propertyGetSet)
+		get := Value{}
+		if getSet[0] != nil {
+			get = toValue_object(getSet[0])
+		}
+		set := Value{}
+		if getSet[1] != nil {
+			set = toValue_object(getSet[1])
+		}
+		object.defineProperty("get", get, 0111, false)
+		object.defineProperty("set", set, 0111, false)
+	}
+	object.defineProperty("enumerable", toValue_bool(descriptor.enumerable()), 0111, false)
+	object.defineProperty("configurable", toValue_bool(descriptor.configurable()), 0111, false)
+	return object
+}

vendor/github.com/robertkrimen/otto/registry/README.markdown

@@ -0,0 +1,51 @@
+# registry
+--
+    import "github.com/robertkrimen/otto/registry"
+
+Package registry is an expirmental package to facillitate altering the otto
+runtime via import.
+
+This interface can change at any time.
+
+## Usage
+
+#### func  Apply
+
+```go
+func Apply(callback func(Entry))
+```
+
+#### type Entry
+
+```go
+type Entry struct {
+}
+```
+
+
+#### func  Register
+
+```go
+func Register(source func() string) *Entry
+```
+
+#### func (*Entry) Disable
+
+```go
+func (self *Entry) Disable()
+```
+
+#### func (*Entry) Enable
+
+```go
+func (self *Entry) Enable()
+```
+
+#### func (Entry) Source
+
+```go
+func (self Entry) Source() string
+```
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/registry/registry.go

@@ -0,0 +1,47 @@
+/*
+Package registry is an expirmental package to facillitate altering the otto runtime via import.
+
+This interface can change at any time.
+*/
+package registry
+
+var registry []*Entry = make([]*Entry, 0)
+
+type Entry struct {
+	active bool
+	source func() string
+}
+
+func newEntry(source func() string) *Entry {
+	return &Entry{
+		active: true,
+		source: source,
+	}
+}
+
+func (self *Entry) Enable() {
+	self.active = true
+}
+
+func (self *Entry) Disable() {
+	self.active = false
+}
+
+func (self Entry) Source() string {
+	return self.source()
+}
+
+func Apply(callback func(Entry)) {
+	for _, entry := range registry {
+		if !entry.active {
+			continue
+		}
+		callback(*entry)
+	}
+}
+
+func Register(source func() string) *Entry {
+	entry := newEntry(source)
+	registry = append(registry, entry)
+	return entry
+}

vendor/github.com/robertkrimen/otto/result.go

@@ -0,0 +1,28 @@
+package otto
+
+type _resultKind int
+
+const (
+	_ _resultKind = iota
+	resultReturn
+	resultBreak
+	resultContinue
+)
+
+type _result struct {
+	kind   _resultKind
+	value  Value
+	target string
+}
+
+func newReturnResult(value Value) _result {
+	return _result{resultReturn, value, ""}
+}
+
+func newContinueResult(target string) _result {
+	return _result{resultContinue, emptyValue, target}
+}
+
+func newBreakResult(target string) _result {
+	return _result{resultBreak, emptyValue, target}
+}

vendor/github.com/robertkrimen/otto/runtime.go

@@ -0,0 +1,859 @@
+package otto
+
+import (
+	"encoding"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"math"
+	"path"
+	"reflect"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/parser"
+)
+
+type _global struct {
+	Object         *_object // Object( ... ), new Object( ... ) - 1 (length)
+	Function       *_object // Function( ... ), new Function( ... ) - 1
+	Array          *_object // Array( ... ), new Array( ... ) - 1
+	String         *_object // String( ... ), new String( ... ) - 1
+	Boolean        *_object // Boolean( ... ), new Boolean( ... ) - 1
+	Number         *_object // Number( ... ), new Number( ... ) - 1
+	Math           *_object
+	Date           *_object // Date( ... ), new Date( ... ) - 7
+	RegExp         *_object // RegExp( ... ), new RegExp( ... ) - 2
+	Error          *_object // Error( ... ), new Error( ... ) - 1
+	EvalError      *_object
+	TypeError      *_object
+	RangeError     *_object
+	ReferenceError *_object
+	SyntaxError    *_object
+	URIError       *_object
+	JSON           *_object
+
+	ObjectPrototype         *_object // Object.prototype
+	FunctionPrototype       *_object // Function.prototype
+	ArrayPrototype          *_object // Array.prototype
+	StringPrototype         *_object // String.prototype
+	BooleanPrototype        *_object // Boolean.prototype
+	NumberPrototype         *_object // Number.prototype
+	DatePrototype           *_object // Date.prototype
+	RegExpPrototype         *_object // RegExp.prototype
+	ErrorPrototype          *_object // Error.prototype
+	EvalErrorPrototype      *_object
+	TypeErrorPrototype      *_object
+	RangeErrorPrototype     *_object
+	ReferenceErrorPrototype *_object
+	SyntaxErrorPrototype    *_object
+	URIErrorPrototype       *_object
+}
+
+type _runtime struct {
+	global       _global
+	globalObject *_object
+	globalStash  *_objectStash
+	scope        *_scope
+	otto         *Otto
+	eval         *_object // The builtin eval, for determine indirect versus direct invocation
+	debugger     func(*Otto)
+	random       func() float64
+	stackLimit   int
+	traceLimit   int
+
+	labels []string // FIXME
+	lck    sync.Mutex
+}
+
+func (self *_runtime) enterScope(scope *_scope) {
+	scope.outer = self.scope
+	if self.scope != nil {
+		if self.stackLimit != 0 && self.scope.depth+1 >= self.stackLimit {
+			panic(self.panicRangeError("Maximum call stack size exceeded"))
+		}
+
+		scope.depth = self.scope.depth + 1
+	}
+
+	self.scope = scope
+}
+
+func (self *_runtime) leaveScope() {
+	self.scope = self.scope.outer
+}
+
+// FIXME This is used in two places (cloning)
+func (self *_runtime) enterGlobalScope() {
+	self.enterScope(newScope(self.globalStash, self.globalStash, self.globalObject))
+}
+
+func (self *_runtime) enterFunctionScope(outer _stash, this Value) *_fnStash {
+	if outer == nil {
+		outer = self.globalStash
+	}
+	stash := self.newFunctionStash(outer)
+	var thisObject *_object
+	switch this.kind {
+	case valueUndefined, valueNull:
+		thisObject = self.globalObject
+	default:
+		thisObject = self.toObject(this)
+	}
+	self.enterScope(newScope(stash, stash, thisObject))
+	return stash
+}
+
+func (self *_runtime) putValue(reference _reference, value Value) {
+	name := reference.putValue(value)
+	if name != "" {
+		// Why? -- If reference.base == nil
+		// strict = false
+		self.globalObject.defineProperty(name, value, 0111, false)
+	}
+}
+
+func (self *_runtime) tryCatchEvaluate(inner func() Value) (tryValue Value, exception bool) {
+	// resultValue = The value of the block (e.g. the last statement)
+	// throw = Something was thrown
+	// throwValue = The value of what was thrown
+	// other = Something that changes flow (return, break, continue) that is not a throw
+	// Otherwise, some sort of unknown panic happened, we'll just propagate it
+	defer func() {
+		if caught := recover(); caught != nil {
+			if exception, ok := caught.(*_exception); ok {
+				caught = exception.eject()
+			}
+			switch caught := caught.(type) {
+			case _error:
+				exception = true
+				tryValue = toValue_object(self.newError(caught.name, caught.messageValue(), 0))
+			case Value:
+				exception = true
+				tryValue = caught
+			default:
+				panic(caught)
+			}
+		}
+	}()
+
+	tryValue = inner()
+	return
+}
+
+// toObject
+
+func (self *_runtime) toObject(value Value) *_object {
+	switch value.kind {
+	case valueEmpty, valueUndefined, valueNull:
+		panic(self.panicTypeError())
+	case valueBoolean:
+		return self.newBoolean(value)
+	case valueString:
+		return self.newString(value)
+	case valueNumber:
+		return self.newNumber(value)
+	case valueObject:
+		return value._object()
+	}
+	panic(self.panicTypeError())
+}
+
+func (self *_runtime) objectCoerce(value Value) (*_object, error) {
+	switch value.kind {
+	case valueUndefined:
+		return nil, errors.New("undefined")
+	case valueNull:
+		return nil, errors.New("null")
+	case valueBoolean:
+		return self.newBoolean(value), nil
+	case valueString:
+		return self.newString(value), nil
+	case valueNumber:
+		return self.newNumber(value), nil
+	case valueObject:
+		return value._object(), nil
+	}
+	panic(self.panicTypeError())
+}
+
+func checkObjectCoercible(rt *_runtime, value Value) {
+	isObject, mustCoerce := testObjectCoercible(value)
+	if !isObject && !mustCoerce {
+		panic(rt.panicTypeError())
+	}
+}
+
+// testObjectCoercible
+
+func testObjectCoercible(value Value) (isObject bool, mustCoerce bool) {
+	switch value.kind {
+	case valueReference, valueEmpty, valueNull, valueUndefined:
+		return false, false
+	case valueNumber, valueString, valueBoolean:
+		return false, true
+	case valueObject:
+		return true, false
+	default:
+		panic("this should never happen")
+	}
+}
+
+func (self *_runtime) safeToValue(value interface{}) (Value, error) {
+	result := Value{}
+	err := catchPanic(func() {
+		result = self.toValue(value)
+	})
+	return result, err
+}
+
+// convertNumeric converts numeric parameter val from js to that of type t if it is safe to do so, otherwise it panics.
+// This allows literals (int64), bitwise values (int32) and the general form (float64) of javascript numerics to be passed as parameters to go functions easily.
+func (self *_runtime) convertNumeric(v Value, t reflect.Type) reflect.Value {
+	val := reflect.ValueOf(v.export())
+
+	if val.Kind() == t.Kind() {
+		return val
+	}
+
+	if val.Kind() == reflect.Interface {
+		val = reflect.ValueOf(val.Interface())
+	}
+
+	switch val.Kind() {
+	case reflect.Float32, reflect.Float64:
+		f64 := val.Float()
+		switch t.Kind() {
+		case reflect.Float64:
+			return reflect.ValueOf(f64)
+		case reflect.Float32:
+			if reflect.Zero(t).OverflowFloat(f64) {
+				panic(self.panicRangeError("converting float64 to float32 would overflow"))
+			}
+
+			return val.Convert(t)
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			i64 := int64(f64)
+			if float64(i64) != f64 {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would cause loss of precision", val.Type(), t)))
+			}
+
+			// The float represents an integer
+			val = reflect.ValueOf(i64)
+		default:
+			panic(self.panicTypeError(fmt.Sprintf("cannot convert %v to %v", val.Type(), t)))
+		}
+	}
+
+	switch val.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		i64 := val.Int()
+		switch t.Kind() {
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			if reflect.Zero(t).OverflowInt(i64) {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would overflow", val.Type(), t)))
+			}
+			return val.Convert(t)
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			if i64 < 0 {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would underflow", val.Type(), t)))
+			}
+			if reflect.Zero(t).OverflowUint(uint64(i64)) {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would overflow", val.Type(), t)))
+			}
+			return val.Convert(t)
+		case reflect.Float32, reflect.Float64:
+			return val.Convert(t)
+		}
+
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		u64 := val.Uint()
+		switch t.Kind() {
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			if u64 > math.MaxInt64 || reflect.Zero(t).OverflowInt(int64(u64)) {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would overflow", val.Type(), t)))
+			}
+			return val.Convert(t)
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			if reflect.Zero(t).OverflowUint(u64) {
+				panic(self.panicRangeError(fmt.Sprintf("converting %v to %v would overflow", val.Type(), t)))
+			}
+			return val.Convert(t)
+		case reflect.Float32, reflect.Float64:
+			return val.Convert(t)
+		}
+	}
+
+	panic(self.panicTypeError(fmt.Sprintf("unsupported type %v -> %v for numeric conversion", val.Type(), t)))
+}
+
+func fieldIndexByName(t reflect.Type, name string) []int {
+	for i := 0; i < t.NumField(); i++ {
+		f := t.Field(i)
+
+		if !validGoStructName(f.Name) {
+			continue
+		}
+
+		if f.Anonymous {
+			if a := fieldIndexByName(f.Type, name); a != nil {
+				return append([]int{i}, a...)
+			}
+		}
+
+		if a := strings.SplitN(f.Tag.Get("json"), ",", 2); a[0] != "" {
+			if a[0] == "-" {
+				continue
+			}
+
+			if a[0] == name {
+				return []int{i}
+			}
+		}
+
+		if f.Name == name {
+			return []int{i}
+		}
+	}
+
+	return nil
+}
+
+var typeOfValue = reflect.TypeOf(Value{})
+var typeOfJSONRawMessage = reflect.TypeOf(json.RawMessage{})
+
+// convertCallParameter converts request val to type t if possible.
+// If the conversion fails due to overflow or type miss-match then it panics.
+// If no conversion is known then the original value is returned.
+func (self *_runtime) convertCallParameter(v Value, t reflect.Type) (reflect.Value, error) {
+	if t == typeOfValue {
+		return reflect.ValueOf(v), nil
+	}
+
+	if t == typeOfJSONRawMessage {
+		if d, err := json.Marshal(v.export()); err == nil {
+			return reflect.ValueOf(d), nil
+		}
+	}
+
+	if v.kind == valueObject {
+		if gso, ok := v._object().value.(*_goStructObject); ok {
+			if gso.value.Type().AssignableTo(t) {
+				// please see TestDynamicFunctionReturningInterface for why this exists
+				if t.Kind() == reflect.Interface && gso.value.Type().ConvertibleTo(t) {
+					return gso.value.Convert(t), nil
+				} else {
+					return gso.value, nil
+				}
+			}
+		}
+
+		if gao, ok := v._object().value.(*_goArrayObject); ok {
+			if gao.value.Type().AssignableTo(t) {
+				// please see TestDynamicFunctionReturningInterface for why this exists
+				if t.Kind() == reflect.Interface && gao.value.Type().ConvertibleTo(t) {
+					return gao.value.Convert(t), nil
+				} else {
+					return gao.value, nil
+				}
+			}
+		}
+	}
+
+	tk := t.Kind()
+
+	if tk == reflect.Interface {
+		e := v.export()
+		if e == nil {
+			return reflect.Zero(t), nil
+		}
+		iv := reflect.ValueOf(e)
+		if iv.Type().AssignableTo(t) {
+			return iv, nil
+		}
+	}
+
+	if tk == reflect.Ptr {
+		switch v.kind {
+		case valueEmpty, valueNull, valueUndefined:
+			return reflect.Zero(t), nil
+		default:
+			var vv reflect.Value
+			vv, err := self.convertCallParameter(v, t.Elem())
+			if err != nil {
+				return reflect.Zero(t), fmt.Errorf("can't convert to %s: %s", t, err.Error())
+			}
+
+			if vv.CanAddr() {
+				return vv.Addr(), nil
+			}
+
+			pv := reflect.New(vv.Type())
+			pv.Elem().Set(vv)
+			return pv, nil
+		}
+	}
+
+	switch tk {
+	case reflect.Bool:
+		return reflect.ValueOf(v.bool()), nil
+	case reflect.String:
+		switch v.kind {
+		case valueString:
+			return reflect.ValueOf(v.value), nil
+		case valueNumber:
+			return reflect.ValueOf(fmt.Sprintf("%v", v.value)), nil
+		}
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64:
+		switch v.kind {
+		case valueNumber:
+			return self.convertNumeric(v, t), nil
+		}
+	case reflect.Slice:
+		if o := v._object(); o != nil {
+			if lv := o.get(propertyLength); lv.IsNumber() {
+				l := lv.number().int64
+
+				s := reflect.MakeSlice(t, int(l), int(l))
+
+				tt := t.Elem()
+
+				if o.class == classArray {
+					for i := int64(0); i < l; i++ {
+						p, ok := o.property[strconv.FormatInt(i, 10)]
+						if !ok {
+							continue
+						}
+
+						e, ok := p.value.(Value)
+						if !ok {
+							continue
+						}
+
+						ev, err := self.convertCallParameter(e, tt)
+						if err != nil {
+							return reflect.Zero(t), fmt.Errorf("couldn't convert element %d of %s: %s", i, t, err.Error())
+						}
+
+						s.Index(int(i)).Set(ev)
+					}
+				} else if o.class == classGoArray {
+					var gslice bool
+					switch o.value.(type) {
+					case *_goSliceObject:
+						gslice = true
+					case *_goArrayObject:
+						gslice = false
+					}
+
+					for i := int64(0); i < l; i++ {
+						var p *_property
+						if gslice {
+							p = goSliceGetOwnProperty(o, strconv.FormatInt(i, 10))
+						} else {
+							p = goArrayGetOwnProperty(o, strconv.FormatInt(i, 10))
+						}
+						if p == nil {
+							continue
+						}
+
+						e, ok := p.value.(Value)
+						if !ok {
+							continue
+						}
+
+						ev, err := self.convertCallParameter(e, tt)
+						if err != nil {
+							return reflect.Zero(t), fmt.Errorf("couldn't convert element %d of %s: %s", i, t, err.Error())
+						}
+
+						s.Index(int(i)).Set(ev)
+					}
+				}
+
+				return s, nil
+			}
+		}
+	case reflect.Map:
+		if o := v._object(); o != nil && t.Key().Kind() == reflect.String {
+			m := reflect.MakeMap(t)
+
+			var err error
+
+			o.enumerate(false, func(k string) bool {
+				v, verr := self.convertCallParameter(o.get(k), t.Elem())
+				if verr != nil {
+					err = fmt.Errorf("couldn't convert property %q of %s: %s", k, t, verr.Error())
+					return false
+				}
+				m.SetMapIndex(reflect.ValueOf(k), v)
+				return true
+			})
+
+			if err != nil {
+				return reflect.Zero(t), err
+			}
+
+			return m, nil
+		}
+	case reflect.Func:
+		if t.NumOut() > 1 {
+			return reflect.Zero(t), fmt.Errorf("converting JavaScript values to Go functions with more than one return value is currently not supported")
+		}
+
+		if o := v._object(); o != nil && o.class == classFunction {
+			return reflect.MakeFunc(t, func(args []reflect.Value) []reflect.Value {
+				l := make([]interface{}, len(args))
+				for i, a := range args {
+					if a.CanInterface() {
+						l[i] = a.Interface()
+					}
+				}
+
+				rv, err := v.Call(nullValue, l...)
+				if err != nil {
+					panic(err)
+				}
+
+				if t.NumOut() == 0 {
+					return nil
+				}
+
+				r, err := self.convertCallParameter(rv, t.Out(0))
+				if err != nil {
+					panic(self.panicTypeError(err.Error()))
+				}
+
+				return []reflect.Value{r}
+			}), nil
+		}
+	case reflect.Struct:
+		if o := v._object(); o != nil && o.class == classObject {
+			s := reflect.New(t)
+
+			for _, k := range o.propertyOrder {
+				idx := fieldIndexByName(t, k)
+
+				if idx == nil {
+					return reflect.Zero(t), fmt.Errorf("can't convert property %q of %s: field does not exist", k, t)
+				}
+
+				ss := s
+
+				for _, i := range idx {
+					if ss.Kind() == reflect.Ptr {
+						if ss.IsNil() {
+							if !ss.CanSet() {
+								return reflect.Zero(t), fmt.Errorf("can't convert property %q of %s: %s is unexported", k, t, ss.Type().Elem())
+							}
+
+							ss.Set(reflect.New(ss.Type().Elem()))
+						}
+
+						ss = ss.Elem()
+					}
+
+					ss = ss.Field(i)
+				}
+
+				v, err := self.convertCallParameter(o.get(k), ss.Type())
+				if err != nil {
+					return reflect.Zero(t), fmt.Errorf("couldn't convert property %q of %s: %s", k, t, err.Error())
+				}
+
+				ss.Set(v)
+			}
+
+			return s.Elem(), nil
+		}
+	}
+
+	if tk == reflect.String {
+		if o := v._object(); o != nil && o.hasProperty("toString") {
+			if fn := o.get("toString"); fn.IsFunction() {
+				sv, err := fn.Call(v)
+				if err != nil {
+					return reflect.Zero(t), fmt.Errorf("couldn't call toString: %s", err.Error())
+				}
+
+				r, err := self.convertCallParameter(sv, t)
+				if err != nil {
+					return reflect.Zero(t), fmt.Errorf("couldn't convert toString result: %s", err.Error())
+				}
+				return r, nil
+			}
+		}
+
+		return reflect.ValueOf(v.String()), nil
+	}
+
+	if v.kind == valueString {
+		var s encoding.TextUnmarshaler
+
+		if reflect.PtrTo(t).Implements(reflect.TypeOf(&s).Elem()) {
+			r := reflect.New(t)
+
+			if err := r.Interface().(encoding.TextUnmarshaler).UnmarshalText([]byte(v.string())); err != nil {
+				return reflect.Zero(t), fmt.Errorf("can't convert to %s as TextUnmarshaller: %s", t.String(), err.Error())
+			}
+
+			return r.Elem(), nil
+		}
+	}
+
+	s := "OTTO DOES NOT UNDERSTAND THIS TYPE"
+	switch v.kind {
+	case valueBoolean:
+		s = "boolean"
+	case valueNull:
+		s = "null"
+	case valueNumber:
+		s = "number"
+	case valueString:
+		s = "string"
+	case valueUndefined:
+		s = "undefined"
+	case valueObject:
+		s = v.Class()
+	}
+
+	return reflect.Zero(t), fmt.Errorf("can't convert from %q to %q", s, t)
+}
+
+func (self *_runtime) toValue(value interface{}) Value {
+	switch value := value.(type) {
+	case Value:
+		return value
+	case func(FunctionCall) Value:
+		var name, file string
+		var line int
+		pc := reflect.ValueOf(value).Pointer()
+		fn := runtime.FuncForPC(pc)
+		if fn != nil {
+			name = fn.Name()
+			file, line = fn.FileLine(pc)
+			file = path.Base(file)
+		}
+		return toValue_object(self.newNativeFunction(name, file, line, value))
+	case _nativeFunction:
+		var name, file string
+		var line int
+		pc := reflect.ValueOf(value).Pointer()
+		fn := runtime.FuncForPC(pc)
+		if fn != nil {
+			name = fn.Name()
+			file, line = fn.FileLine(pc)
+			file = path.Base(file)
+		}
+		return toValue_object(self.newNativeFunction(name, file, line, value))
+	case Object, *Object, _object, *_object:
+		// Nothing happens.
+		// FIXME We should really figure out what can come here.
+		// This catch-all is ugly.
+	default:
+		{
+			value := reflect.ValueOf(value)
+
+			switch value.Kind() {
+			case reflect.Ptr:
+				switch reflect.Indirect(value).Kind() {
+				case reflect.Struct:
+					return toValue_object(self.newGoStructObject(value))
+				case reflect.Array:
+					return toValue_object(self.newGoArray(value))
+				}
+			case reflect.Struct:
+				return toValue_object(self.newGoStructObject(value))
+			case reflect.Map:
+				return toValue_object(self.newGoMapObject(value))
+			case reflect.Slice:
+				return toValue_object(self.newGoSlice(value))
+			case reflect.Array:
+				return toValue_object(self.newGoArray(value))
+			case reflect.Func:
+				var name, file string
+				var line int
+				if v := reflect.ValueOf(value); v.Kind() == reflect.Ptr {
+					pc := v.Pointer()
+					fn := runtime.FuncForPC(pc)
+					if fn != nil {
+						name = fn.Name()
+						file, line = fn.FileLine(pc)
+						file = path.Base(file)
+					}
+				}
+
+				typ := value.Type()
+
+				return toValue_object(self.newNativeFunction(name, file, line, func(c FunctionCall) Value {
+					nargs := typ.NumIn()
+
+					if len(c.ArgumentList) != nargs {
+						if typ.IsVariadic() {
+							if len(c.ArgumentList) < nargs-1 {
+								panic(self.panicRangeError(fmt.Sprintf("expected at least %d arguments; got %d", nargs-1, len(c.ArgumentList))))
+							}
+						} else {
+							panic(self.panicRangeError(fmt.Sprintf("expected %d argument(s); got %d", nargs, len(c.ArgumentList))))
+						}
+					}
+
+					in := make([]reflect.Value, len(c.ArgumentList))
+
+					callSlice := false
+
+					for i, a := range c.ArgumentList {
+						var t reflect.Type
+
+						n := i
+						if n >= nargs-1 && typ.IsVariadic() {
+							if n > nargs-1 {
+								n = nargs - 1
+							}
+
+							t = typ.In(n).Elem()
+						} else {
+							t = typ.In(n)
+						}
+
+						// if this is a variadic Go function, and the caller has supplied
+						// exactly the number of JavaScript arguments required, and this
+						// is the last JavaScript argument, try treating the it as the
+						// actual set of variadic Go arguments. if that succeeds, break
+						// out of the loop.
+						if typ.IsVariadic() && len(c.ArgumentList) == nargs && i == nargs-1 {
+							if v, err := self.convertCallParameter(a, typ.In(n)); err == nil {
+								in[i] = v
+								callSlice = true
+								break
+							}
+						}
+
+						v, err := self.convertCallParameter(a, t)
+						if err != nil {
+							panic(self.panicTypeError(err.Error()))
+						}
+
+						in[i] = v
+					}
+
+					var out []reflect.Value
+					if callSlice {
+						out = value.CallSlice(in)
+					} else {
+						out = value.Call(in)
+					}
+
+					switch len(out) {
+					case 0:
+						return Value{}
+					case 1:
+						return self.toValue(out[0].Interface())
+					default:
+						s := make([]interface{}, len(out))
+						for i, v := range out {
+							s[i] = self.toValue(v.Interface())
+						}
+
+						return self.toValue(s)
+					}
+				}))
+			}
+		}
+	}
+
+	return toValue(value)
+}
+
+func (runtime *_runtime) newGoSlice(value reflect.Value) *_object {
+	self := runtime.newGoSliceObject(value)
+	self.prototype = runtime.global.ArrayPrototype
+	return self
+}
+
+func (runtime *_runtime) newGoArray(value reflect.Value) *_object {
+	self := runtime.newGoArrayObject(value)
+	self.prototype = runtime.global.ArrayPrototype
+	return self
+}
+
+func (runtime *_runtime) parse(filename string, src, sm interface{}) (*ast.Program, error) {
+	return parser.ParseFileWithSourceMap(nil, filename, src, sm, 0)
+}
+
+func (runtime *_runtime) cmpl_parse(filename string, src, sm interface{}) (*_nodeProgram, error) {
+	program, err := parser.ParseFileWithSourceMap(nil, filename, src, sm, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	return cmpl_parse(program), nil
+}
+
+func (self *_runtime) parseSource(src, sm interface{}) (*_nodeProgram, *ast.Program, error) {
+	switch src := src.(type) {
+	case *ast.Program:
+		return nil, src, nil
+	case *Script:
+		return src.program, nil, nil
+	}
+
+	program, err := self.parse("", src, sm)
+
+	return nil, program, err
+}
+
+func (self *_runtime) cmpl_runOrEval(src, sm interface{}, eval bool) (Value, error) {
+	result := Value{}
+	cmpl_program, program, err := self.parseSource(src, sm)
+	if err != nil {
+		return result, err
+	}
+	if cmpl_program == nil {
+		cmpl_program = cmpl_parse(program)
+	}
+	err = catchPanic(func() {
+		result = self.cmpl_evaluate_nodeProgram(cmpl_program, eval)
+	})
+	switch result.kind {
+	case valueEmpty:
+		result = Value{}
+	case valueReference:
+		result = result.resolve()
+	}
+	return result, err
+}
+
+func (self *_runtime) cmpl_run(src, sm interface{}) (Value, error) {
+	return self.cmpl_runOrEval(src, sm, false)
+}
+
+func (self *_runtime) cmpl_eval(src, sm interface{}) (Value, error) {
+	return self.cmpl_runOrEval(src, sm, true)
+}
+
+func (self *_runtime) parseThrow(err error) {
+	if err == nil {
+		return
+	}
+	switch err := err.(type) {
+	case parser.ErrorList:
+		{
+			err := err[0]
+			if err.Message == "Invalid left-hand side in assignment" {
+				panic(self.panicReferenceError(err.Message))
+			}
+			panic(self.panicSyntaxError(err.Message))
+		}
+	}
+	panic(self.panicSyntaxError(err.Error()))
+}
+
+func (self *_runtime) cmpl_parseOrThrow(src, sm interface{}) *_nodeProgram {
+	program, err := self.cmpl_parse("", src, sm)
+	self.parseThrow(err) // Will panic/throw appropriately
+	return program
+}

vendor/github.com/robertkrimen/otto/scope.go

@@ -0,0 +1,35 @@
+package otto
+
+// _scope:
+// entryFile
+// entryIdx
+// top?
+// outer => nil
+
+// _stash:
+// lexical
+// variable
+//
+// _thisStash (ObjectEnvironment)
+// _fnStash
+// _dclStash
+
+// An ECMA-262 ExecutionContext
+type _scope struct {
+	lexical  _stash
+	variable _stash
+	this     *_object
+	eval     bool // Replace this with kind?
+	outer    *_scope
+	depth    int
+
+	frame _frame
+}
+
+func newScope(lexical _stash, variable _stash, this *_object) *_scope {
+	return &_scope{
+		lexical:  lexical,
+		variable: variable,
+		this:     this,
+	}
+}

vendor/github.com/robertkrimen/otto/script.go

@@ -0,0 +1,112 @@
+package otto
+
+import (
+	"bytes"
+	"encoding/gob"
+	"errors"
+)
+
+var ErrVersion = errors.New("version mismatch")
+
+var scriptVersion = "2014-04-13/1"
+
+// Script is a handle for some (reusable) JavaScript.
+// Passing a Script value to a run method will evaluate the JavaScript.
+//
+type Script struct {
+	version  string
+	program  *_nodeProgram
+	filename string
+	src      string
+}
+
+// Compile will parse the given source and return a Script value or nil and
+// an error if there was a problem during compilation.
+//
+//      script, err := vm.Compile("", `var abc; if (!abc) abc = 0; abc += 2; abc;`)
+//      vm.Run(script)
+//
+func (self *Otto) Compile(filename string, src interface{}) (*Script, error) {
+	return self.CompileWithSourceMap(filename, src, nil)
+}
+
+// CompileWithSourceMap does the same thing as Compile, but with the obvious
+// difference of applying a source map.
+func (self *Otto) CompileWithSourceMap(filename string, src, sm interface{}) (*Script, error) {
+	program, err := self.runtime.parse(filename, src, sm)
+	if err != nil {
+		return nil, err
+	}
+
+	cmpl_program := cmpl_parse(program)
+
+	script := &Script{
+		version:  scriptVersion,
+		program:  cmpl_program,
+		filename: filename,
+		src:      program.File.Source(),
+	}
+
+	return script, nil
+}
+
+func (self *Script) String() string {
+	return "// " + self.filename + "\n" + self.src
+}
+
+// MarshalBinary will marshal a script into a binary form. A marshalled script
+// that is later unmarshalled can be executed on the same version of the otto runtime.
+//
+// The binary format can change at any time and should be considered unspecified and opaque.
+//
+func (self *Script) marshalBinary() ([]byte, error) {
+	var bfr bytes.Buffer
+	encoder := gob.NewEncoder(&bfr)
+	err := encoder.Encode(self.version)
+	if err != nil {
+		return nil, err
+	}
+	err = encoder.Encode(self.program)
+	if err != nil {
+		return nil, err
+	}
+	err = encoder.Encode(self.filename)
+	if err != nil {
+		return nil, err
+	}
+	err = encoder.Encode(self.src)
+	if err != nil {
+		return nil, err
+	}
+	return bfr.Bytes(), nil
+}
+
+// UnmarshalBinary will vivify a marshalled script into something usable. If the script was
+// originally marshalled on a different version of the otto runtime, then this method
+// will return an error.
+//
+// The binary format can change at any time and should be considered unspecified and opaque.
+func (self *Script) unmarshalBinary(data []byte) (err error) {
+	decoder := gob.NewDecoder(bytes.NewReader(data))
+	defer func() {
+		if err != nil {
+			self.version = ""
+			self.program = nil
+			self.filename = ""
+			self.src = ""
+		}
+	}()
+	if err = decoder.Decode(&self.version); err != nil {
+		return err
+	}
+	if self.version != scriptVersion {
+		return ErrVersion
+	}
+	if err = decoder.Decode(&self.program); err != nil {
+		return err
+	}
+	if err = decoder.Decode(&self.filename); err != nil {
+		return err
+	}
+	return decoder.Decode(&self.src)
+}

vendor/github.com/robertkrimen/otto/stash.go

@@ -0,0 +1,296 @@
+package otto
+
+import (
+	"fmt"
+)
+
+// ======
+// _stash
+// ======
+
+type _stash interface {
+	hasBinding(string) bool            //
+	createBinding(string, bool, Value) // CreateMutableBinding
+	setBinding(string, Value, bool)    // SetMutableBinding
+	getBinding(string, bool) Value     // GetBindingValue
+	deleteBinding(string) bool         //
+	setValue(string, Value, bool)      // createBinding + setBinding
+
+	outer() _stash
+	runtime() *_runtime
+
+	newReference(string, bool, _at) _reference
+
+	clone(clone *_clone) _stash
+}
+
+// ==========
+// _objectStash
+// ==========
+
+type _objectStash struct {
+	_runtime *_runtime
+	_outer   _stash
+	object   *_object
+}
+
+func (self *_objectStash) runtime() *_runtime {
+	return self._runtime
+}
+
+func (runtime *_runtime) newObjectStash(object *_object, outer _stash) *_objectStash {
+	if object == nil {
+		object = runtime.newBaseObject()
+		object.class = "environment"
+	}
+	return &_objectStash{
+		_runtime: runtime,
+		_outer:   outer,
+		object:   object,
+	}
+}
+
+func (in *_objectStash) clone(clone *_clone) _stash {
+	out, exists := clone.objectStash(in)
+	if exists {
+		return out
+	}
+	*out = _objectStash{
+		clone.runtime,
+		clone.stash(in._outer),
+		clone.object(in.object),
+	}
+	return out
+}
+
+func (self *_objectStash) hasBinding(name string) bool {
+	return self.object.hasProperty(name)
+}
+
+func (self *_objectStash) createBinding(name string, deletable bool, value Value) {
+	if self.object.hasProperty(name) {
+		panic(hereBeDragons())
+	}
+	mode := _propertyMode(0111)
+	if !deletable {
+		mode = _propertyMode(0110)
+	}
+	// TODO False?
+	self.object.defineProperty(name, value, mode, false)
+}
+
+func (self *_objectStash) setBinding(name string, value Value, strict bool) {
+	self.object.put(name, value, strict)
+}
+
+func (self *_objectStash) setValue(name string, value Value, throw bool) {
+	if !self.hasBinding(name) {
+		self.createBinding(name, true, value) // Configurable by default
+	} else {
+		self.setBinding(name, value, throw)
+	}
+}
+
+func (self *_objectStash) getBinding(name string, throw bool) Value {
+	if self.object.hasProperty(name) {
+		return self.object.get(name)
+	}
+	if throw { // strict?
+		panic(self._runtime.panicReferenceError("Not Defined", name))
+	}
+	return Value{}
+}
+
+func (self *_objectStash) deleteBinding(name string) bool {
+	return self.object.delete(name, false)
+}
+
+func (self *_objectStash) outer() _stash {
+	return self._outer
+}
+
+func (self *_objectStash) newReference(name string, strict bool, at _at) _reference {
+	return newPropertyReference(self._runtime, self.object, name, strict, at)
+}
+
+// =========
+// _dclStash
+// =========
+
+type _dclStash struct {
+	_runtime *_runtime
+	_outer   _stash
+	property map[string]_dclProperty
+}
+
+type _dclProperty struct {
+	value     Value
+	mutable   bool
+	deletable bool
+	readable  bool
+}
+
+func (runtime *_runtime) newDeclarationStash(outer _stash) *_dclStash {
+	return &_dclStash{
+		_runtime: runtime,
+		_outer:   outer,
+		property: map[string]_dclProperty{},
+	}
+}
+
+func (in *_dclStash) clone(clone *_clone) _stash {
+	out, exists := clone.dclStash(in)
+	if exists {
+		return out
+	}
+	property := make(map[string]_dclProperty, len(in.property))
+	for index, value := range in.property {
+		property[index] = clone.dclProperty(value)
+	}
+	*out = _dclStash{
+		clone.runtime,
+		clone.stash(in._outer),
+		property,
+	}
+	return out
+}
+
+func (self *_dclStash) hasBinding(name string) bool {
+	_, exists := self.property[name]
+	return exists
+}
+
+func (self *_dclStash) runtime() *_runtime {
+	return self._runtime
+}
+
+func (self *_dclStash) createBinding(name string, deletable bool, value Value) {
+	_, exists := self.property[name]
+	if exists {
+		panic(fmt.Errorf("createBinding: %s: already exists", name))
+	}
+	self.property[name] = _dclProperty{
+		value:     value,
+		mutable:   true,
+		deletable: deletable,
+		readable:  false,
+	}
+}
+
+func (self *_dclStash) setBinding(name string, value Value, strict bool) {
+	property, exists := self.property[name]
+	if !exists {
+		panic(fmt.Errorf("setBinding: %s: missing", name))
+	}
+	if property.mutable {
+		property.value = value
+		self.property[name] = property
+	} else {
+		self._runtime.typeErrorResult(strict)
+	}
+}
+
+func (self *_dclStash) setValue(name string, value Value, throw bool) {
+	if !self.hasBinding(name) {
+		self.createBinding(name, false, value) // NOT deletable by default
+	} else {
+		self.setBinding(name, value, throw)
+	}
+}
+
+// FIXME This is called a __lot__
+func (self *_dclStash) getBinding(name string, throw bool) Value {
+	property, exists := self.property[name]
+	if !exists {
+		panic(fmt.Errorf("getBinding: %s: missing", name))
+	}
+	if !property.mutable && !property.readable {
+		if throw { // strict?
+			panic(self._runtime.panicTypeError())
+		}
+		return Value{}
+	}
+	return property.value
+}
+
+func (self *_dclStash) deleteBinding(name string) bool {
+	property, exists := self.property[name]
+	if !exists {
+		return true
+	}
+	if !property.deletable {
+		return false
+	}
+	delete(self.property, name)
+	return true
+}
+
+func (self *_dclStash) outer() _stash {
+	return self._outer
+}
+
+func (self *_dclStash) newReference(name string, strict bool, _ _at) _reference {
+	return &_stashReference{
+		name: name,
+		base: self,
+	}
+}
+
+// ========
+// _fnStash
+// ========
+
+type _fnStash struct {
+	_dclStash
+	arguments           *_object
+	indexOfArgumentName map[string]string
+}
+
+func (runtime *_runtime) newFunctionStash(outer _stash) *_fnStash {
+	return &_fnStash{
+		_dclStash: _dclStash{
+			_runtime: runtime,
+			_outer:   outer,
+			property: map[string]_dclProperty{},
+		},
+	}
+}
+
+func (in *_fnStash) clone(clone *_clone) _stash {
+	out, exists := clone.fnStash(in)
+	if exists {
+		return out
+	}
+	dclStash := in._dclStash.clone(clone).(*_dclStash)
+	index := make(map[string]string, len(in.indexOfArgumentName))
+	for name, value := range in.indexOfArgumentName {
+		index[name] = value
+	}
+	*out = _fnStash{
+		_dclStash:           *dclStash,
+		arguments:           clone.object(in.arguments),
+		indexOfArgumentName: index,
+	}
+	return out
+}
+
+func getStashProperties(stash _stash) (keys []string) {
+	switch vars := stash.(type) {
+	case *_dclStash:
+		for k := range vars.property {
+			keys = append(keys, k)
+		}
+	case *_fnStash:
+		for k := range vars.property {
+			keys = append(keys, k)
+		}
+	case *_objectStash:
+		for k := range vars.object.property {
+			keys = append(keys, k)
+		}
+	default:
+		panic("unknown stash type")
+	}
+
+	return
+}

vendor/github.com/robertkrimen/otto/token/Makefile

@@ -0,0 +1,2 @@
+token_const.go: tokenfmt
+	./$^ | gofmt > $@

vendor/github.com/robertkrimen/otto/token/README.markdown

@@ -0,0 +1,171 @@
+# token
+--
+    import "github.com/robertkrimen/otto/token"
+
+Package token defines constants representing the lexical tokens of JavaScript
+(ECMA5).
+
+## Usage
+
+```go
+const (
+	ILLEGAL
+	EOF
+	COMMENT
+	KEYWORD
+
+	STRING
+	BOOLEAN
+	NULL
+	NUMBER
+	IDENTIFIER
+
+	PLUS      // +
+	MINUS     // -
+	MULTIPLY  // *
+	SLASH     // /
+	REMAINDER // %
+
+	AND                  // &
+	OR                   // |
+	EXCLUSIVE_OR         // ^
+	SHIFT_LEFT           // <<
+	SHIFT_RIGHT          // >>
+	UNSIGNED_SHIFT_RIGHT // >>>
+	AND_NOT              // &^
+
+	ADD_ASSIGN       // +=
+	SUBTRACT_ASSIGN  // -=
+	MULTIPLY_ASSIGN  // *=
+	QUOTIENT_ASSIGN  // /=
+	REMAINDER_ASSIGN // %=
+
+	AND_ASSIGN                  // &=
+	OR_ASSIGN                   // |=
+	EXCLUSIVE_OR_ASSIGN         // ^=
+	SHIFT_LEFT_ASSIGN           // <<=
+	SHIFT_RIGHT_ASSIGN          // >>=
+	UNSIGNED_SHIFT_RIGHT_ASSIGN // >>>=
+	AND_NOT_ASSIGN              // &^=
+
+	LOGICAL_AND // &&
+	LOGICAL_OR  // ||
+	INCREMENT   // ++
+	DECREMENT   // --
+
+	EQUAL        // ==
+	STRICT_EQUAL // ===
+	LESS         // <
+	GREATER      // >
+	ASSIGN       // =
+	NOT          // !
+
+	BITWISE_NOT // ~
+
+	NOT_EQUAL        // !=
+	STRICT_NOT_EQUAL // !==
+	LESS_OR_EQUAL    // <=
+	GREATER_OR_EQUAL // >=
+
+	LEFT_PARENTHESIS // (
+	LEFT_BRACKET     // [
+	LEFT_BRACE       // {
+	COMMA            // ,
+	PERIOD           // .
+
+	RIGHT_PARENTHESIS // )
+	RIGHT_BRACKET     // ]
+	RIGHT_BRACE       // }
+	SEMICOLON         // ;
+	COLON             // :
+	QUESTION_MARK     // ?
+
+	IF
+	IN
+	DO
+
+	VAR
+	FOR
+	NEW
+	TRY
+
+	THIS
+	ELSE
+	CASE
+	VOID
+	WITH
+
+	WHILE
+	BREAK
+	CATCH
+	THROW
+
+	RETURN
+	TYPEOF
+	DELETE
+	SWITCH
+
+	DEFAULT
+	FINALLY
+
+	FUNCTION
+	CONTINUE
+	DEBUGGER
+
+	INSTANCEOF
+)
+```
+
+#### type Token
+
+```go
+type Token int
+```
+
+Token is the set of lexical tokens in JavaScript (ECMA5).
+
+#### func  IsKeyword
+
+```go
+func IsKeyword(literal string) (Token, bool)
+```
+IsKeyword returns the keyword token if literal is a keyword, a KEYWORD token if
+the literal is a future keyword (const, let, class, super, ...), or 0 if the
+literal is not a keyword.
+
+If the literal is a keyword, IsKeyword returns a second value indicating if the
+literal is considered a future keyword in strict-mode only.
+
+7.6.1.2 Future Reserved Words:
+
+    const
+    class
+    enum
+    export
+    extends
+    import
+    super
+
+7.6.1.2 Future Reserved Words (strict):
+
+    implements
+    interface
+    let
+    package
+    private
+    protected
+    public
+    static
+
+#### func (Token) String
+
+```go
+func (tkn Token) String() string
+```
+String returns the string corresponding to the token. For operators, delimiters,
+and keywords the string is the actual token string (e.g., for the token PLUS,
+the String() is "+"). For all other tokens the string corresponds to the token
+name (e.g. for the token IDENTIFIER, the string is "IDENTIFIER").
+
+--
+**godocdown** http://github.com/robertkrimen/godocdown

vendor/github.com/robertkrimen/otto/token/token.go

@@ -0,0 +1,116 @@
+// Package token defines constants representing the lexical tokens of JavaScript (ECMA5).
+package token
+
+import (
+	"strconv"
+)
+
+// Token is the set of lexical tokens in JavaScript (ECMA5).
+type Token int
+
+// String returns the string corresponding to the token.
+// For operators, delimiters, and keywords the string is the actual
+// token string (e.g., for the token PLUS, the String() is
+// "+"). For all other tokens the string corresponds to the token
+// name (e.g. for the token IDENTIFIER, the string is "IDENTIFIER").
+//
+func (tkn Token) String() string {
+	if 0 == tkn {
+		return "UNKNOWN"
+	}
+	if tkn < Token(len(token2string)) {
+		return token2string[tkn]
+	}
+	return "token(" + strconv.Itoa(int(tkn)) + ")"
+}
+
+// This is not used for anything
+func (tkn Token) precedence(in bool) int {
+
+	switch tkn {
+	case LOGICAL_OR:
+		return 1
+
+	case LOGICAL_AND:
+		return 2
+
+	case OR, OR_ASSIGN:
+		return 3
+
+	case EXCLUSIVE_OR:
+		return 4
+
+	case AND, AND_ASSIGN, AND_NOT, AND_NOT_ASSIGN:
+		return 5
+
+	case EQUAL,
+		NOT_EQUAL,
+		STRICT_EQUAL,
+		STRICT_NOT_EQUAL:
+		return 6
+
+	case LESS, GREATER, LESS_OR_EQUAL, GREATER_OR_EQUAL, INSTANCEOF:
+		return 7
+
+	case IN:
+		if in {
+			return 7
+		}
+		return 0
+
+	case SHIFT_LEFT, SHIFT_RIGHT, UNSIGNED_SHIFT_RIGHT:
+		fallthrough
+	case SHIFT_LEFT_ASSIGN, SHIFT_RIGHT_ASSIGN, UNSIGNED_SHIFT_RIGHT_ASSIGN:
+		return 8
+
+	case PLUS, MINUS, ADD_ASSIGN, SUBTRACT_ASSIGN:
+		return 9
+
+	case MULTIPLY, SLASH, REMAINDER, MULTIPLY_ASSIGN, QUOTIENT_ASSIGN, REMAINDER_ASSIGN:
+		return 11
+	}
+	return 0
+}
+
+type _keyword struct {
+	token         Token
+	futureKeyword bool
+	strict        bool
+}
+
+// IsKeyword returns the keyword token if literal is a keyword, a KEYWORD token
+// if the literal is a future keyword (const, let, class, super, ...), or 0 if the literal is not a keyword.
+//
+// If the literal is a keyword, IsKeyword returns a second value indicating if the literal
+// is considered a future keyword in strict-mode only.
+//
+// 7.6.1.2 Future Reserved Words:
+//
+//       const
+//       class
+//       enum
+//       export
+//       extends
+//       import
+//       super
+//
+// 7.6.1.2 Future Reserved Words (strict):
+//
+//       implements
+//       interface
+//       let
+//       package
+//       private
+//       protected
+//       public
+//       static
+//
+func IsKeyword(literal string) (Token, bool) {
+	if keyword, exists := keywordTable[literal]; exists {
+		if keyword.futureKeyword {
+			return KEYWORD, keyword.strict
+		}
+		return keyword.token, false
+	}
+	return 0, false
+}

vendor/github.com/robertkrimen/otto/token/token_const.go

@@ -0,0 +1,349 @@
+package token
+
+const (
+	_ Token = iota
+
+	ILLEGAL
+	EOF
+	COMMENT
+	KEYWORD
+
+	STRING
+	BOOLEAN
+	NULL
+	NUMBER
+	IDENTIFIER
+
+	PLUS      // +
+	MINUS     // -
+	MULTIPLY  // *
+	SLASH     // /
+	REMAINDER // %
+
+	AND                  // &
+	OR                   // |
+	EXCLUSIVE_OR         // ^
+	SHIFT_LEFT           // <<
+	SHIFT_RIGHT          // >>
+	UNSIGNED_SHIFT_RIGHT // >>>
+	AND_NOT              // &^
+
+	ADD_ASSIGN       // +=
+	SUBTRACT_ASSIGN  // -=
+	MULTIPLY_ASSIGN  // *=
+	QUOTIENT_ASSIGN  // /=
+	REMAINDER_ASSIGN // %=
+
+	AND_ASSIGN                  // &=
+	OR_ASSIGN                   // |=
+	EXCLUSIVE_OR_ASSIGN         // ^=
+	SHIFT_LEFT_ASSIGN           // <<=
+	SHIFT_RIGHT_ASSIGN          // >>=
+	UNSIGNED_SHIFT_RIGHT_ASSIGN // >>>=
+	AND_NOT_ASSIGN              // &^=
+
+	LOGICAL_AND // &&
+	LOGICAL_OR  // ||
+	INCREMENT   // ++
+	DECREMENT   // --
+
+	EQUAL        // ==
+	STRICT_EQUAL // ===
+	LESS         // <
+	GREATER      // >
+	ASSIGN       // =
+	NOT          // !
+
+	BITWISE_NOT // ~
+
+	NOT_EQUAL        // !=
+	STRICT_NOT_EQUAL // !==
+	LESS_OR_EQUAL    // <=
+	GREATER_OR_EQUAL // >=
+
+	LEFT_PARENTHESIS // (
+	LEFT_BRACKET     // [
+	LEFT_BRACE       // {
+	COMMA            // ,
+	PERIOD           // .
+
+	RIGHT_PARENTHESIS // )
+	RIGHT_BRACKET     // ]
+	RIGHT_BRACE       // }
+	SEMICOLON         // ;
+	COLON             // :
+	QUESTION_MARK     // ?
+
+	firstKeyword // nolint: deadcode
+	IF
+	IN
+	DO
+
+	VAR
+	FOR
+	NEW
+	TRY
+
+	THIS
+	ELSE
+	CASE
+	VOID
+	WITH
+
+	WHILE
+	BREAK
+	CATCH
+	THROW
+
+	RETURN
+	TYPEOF
+	DELETE
+	SWITCH
+
+	DEFAULT
+	FINALLY
+
+	FUNCTION
+	CONTINUE
+	DEBUGGER
+
+	INSTANCEOF
+	lastKeyword // nolint: deadcode
+)
+
+var token2string = [...]string{
+	ILLEGAL:                     "ILLEGAL",
+	EOF:                         "EOF",
+	COMMENT:                     "COMMENT",
+	KEYWORD:                     "KEYWORD",
+	STRING:                      "STRING",
+	BOOLEAN:                     "BOOLEAN",
+	NULL:                        "NULL",
+	NUMBER:                      "NUMBER",
+	IDENTIFIER:                  "IDENTIFIER",
+	PLUS:                        "+",
+	MINUS:                       "-",
+	MULTIPLY:                    "*",
+	SLASH:                       "/",
+	REMAINDER:                   "%",
+	AND:                         "&",
+	OR:                          "|",
+	EXCLUSIVE_OR:                "^",
+	SHIFT_LEFT:                  "<<",
+	SHIFT_RIGHT:                 ">>",
+	UNSIGNED_SHIFT_RIGHT:        ">>>",
+	AND_NOT:                     "&^",
+	ADD_ASSIGN:                  "+=",
+	SUBTRACT_ASSIGN:             "-=",
+	MULTIPLY_ASSIGN:             "*=",
+	QUOTIENT_ASSIGN:             "/=",
+	REMAINDER_ASSIGN:            "%=",
+	AND_ASSIGN:                  "&=",
+	OR_ASSIGN:                   "|=",
+	EXCLUSIVE_OR_ASSIGN:         "^=",
+	SHIFT_LEFT_ASSIGN:           "<<=",
+	SHIFT_RIGHT_ASSIGN:          ">>=",
+	UNSIGNED_SHIFT_RIGHT_ASSIGN: ">>>=",
+	AND_NOT_ASSIGN:              "&^=",
+	LOGICAL_AND:                 "&&",
+	LOGICAL_OR:                  "||",
+	INCREMENT:                   "++",
+	DECREMENT:                   "--",
+	EQUAL:                       "==",
+	STRICT_EQUAL:                "===",
+	LESS:                        "<",
+	GREATER:                     ">",
+	ASSIGN:                      "=",
+	NOT:                         "!",
+	BITWISE_NOT:                 "~",
+	NOT_EQUAL:                   "!=",
+	STRICT_NOT_EQUAL:            "!==",
+	LESS_OR_EQUAL:               "<=",
+	GREATER_OR_EQUAL:            ">=",
+	LEFT_PARENTHESIS:            "(",
+	LEFT_BRACKET:                "[",
+	LEFT_BRACE:                  "{",
+	COMMA:                       ",",
+	PERIOD:                      ".",
+	RIGHT_PARENTHESIS:           ")",
+	RIGHT_BRACKET:               "]",
+	RIGHT_BRACE:                 "}",
+	SEMICOLON:                   ";",
+	COLON:                       ":",
+	QUESTION_MARK:               "?",
+	IF:                          "if",
+	IN:                          "in",
+	DO:                          "do",
+	VAR:                         "var",
+	FOR:                         "for",
+	NEW:                         "new",
+	TRY:                         "try",
+	THIS:                        "this",
+	ELSE:                        "else",
+	CASE:                        "case",
+	VOID:                        "void",
+	WITH:                        "with",
+	WHILE:                       "while",
+	BREAK:                       "break",
+	CATCH:                       "catch",
+	THROW:                       "throw",
+	RETURN:                      "return",
+	TYPEOF:                      "typeof",
+	DELETE:                      "delete",
+	SWITCH:                      "switch",
+	DEFAULT:                     "default",
+	FINALLY:                     "finally",
+	FUNCTION:                    "function",
+	CONTINUE:                    "continue",
+	DEBUGGER:                    "debugger",
+	INSTANCEOF:                  "instanceof",
+}
+
+var keywordTable = map[string]_keyword{
+	"if": _keyword{
+		token: IF,
+	},
+	"in": _keyword{
+		token: IN,
+	},
+	"do": _keyword{
+		token: DO,
+	},
+	"var": _keyword{
+		token: VAR,
+	},
+	"for": _keyword{
+		token: FOR,
+	},
+	"new": _keyword{
+		token: NEW,
+	},
+	"try": _keyword{
+		token: TRY,
+	},
+	"this": _keyword{
+		token: THIS,
+	},
+	"else": _keyword{
+		token: ELSE,
+	},
+	"case": _keyword{
+		token: CASE,
+	},
+	"void": _keyword{
+		token: VOID,
+	},
+	"with": _keyword{
+		token: WITH,
+	},
+	"while": _keyword{
+		token: WHILE,
+	},
+	"break": _keyword{
+		token: BREAK,
+	},
+	"catch": _keyword{
+		token: CATCH,
+	},
+	"throw": _keyword{
+		token: THROW,
+	},
+	"return": _keyword{
+		token: RETURN,
+	},
+	"typeof": _keyword{
+		token: TYPEOF,
+	},
+	"delete": _keyword{
+		token: DELETE,
+	},
+	"switch": _keyword{
+		token: SWITCH,
+	},
+	"default": _keyword{
+		token: DEFAULT,
+	},
+	"finally": _keyword{
+		token: FINALLY,
+	},
+	"function": _keyword{
+		token: FUNCTION,
+	},
+	"continue": _keyword{
+		token: CONTINUE,
+	},
+	"debugger": _keyword{
+		token: DEBUGGER,
+	},
+	"instanceof": _keyword{
+		token: INSTANCEOF,
+	},
+	"const": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"class": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"enum": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"export": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"extends": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"import": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"super": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+	},
+	"implements": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"interface": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"let": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"package": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"private": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"protected": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"public": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+	"static": _keyword{
+		token:         KEYWORD,
+		futureKeyword: true,
+		strict:        true,
+	},
+}

vendor/github.com/robertkrimen/otto/token/tokenfmt

@@ -0,0 +1,222 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+my (%token, @order, @keywords);
+
+{
+    my $keywords;
+    my @const;
+    push @const, <<_END_;
+package token
+
+const(
+    _ Token = iota
+_END_
+
+    for (split m/\n/, <<_END_) {
+ILLEGAL
+EOF
+COMMENT
+KEYWORD
+
+STRING
+BOOLEAN
+NULL
+NUMBER
+IDENTIFIER
+
+PLUS                            +
+MINUS                           -
+MULTIPLY                        *
+SLASH                           /
+REMAINDER                       %
+
+AND                             &
+OR                              |
+EXCLUSIVE_OR                    ^
+SHIFT_LEFT                      <<
+SHIFT_RIGHT                     >>
+UNSIGNED_SHIFT_RIGHT            >>>
+AND_NOT                         &^
+
+ADD_ASSIGN                     +=
+SUBTRACT_ASSIGN                -=
+MULTIPLY_ASSIGN                *=
+QUOTIENT_ASSIGN                /=
+REMAINDER_ASSIGN               %=
+
+AND_ASSIGN                     &=
+OR_ASSIGN                      |=
+EXCLUSIVE_OR_ASSIGN            ^=
+SHIFT_LEFT_ASSIGN              <<=
+SHIFT_RIGHT_ASSIGN             >>=
+UNSIGNED_SHIFT_RIGHT_ASSIGN    >>>=
+AND_NOT_ASSIGN                 &^=
+
+LOGICAL_AND                    &&
+LOGICAL_OR                     ||
+INCREMENT                      ++
+DECREMENT                      --
+
+EQUAL                          ==
+STRICT_EQUAL                   ===
+LESS                           <
+GREATER                        >
+ASSIGN                         =
+NOT                            !
+
+BITWISE_NOT                    ~
+
+NOT_EQUAL                      !=
+STRICT_NOT_EQUAL               !==
+LESS_OR_EQUAL                  <=
+GREATER_OR_EQUAL               <=
+
+LEFT_PARENTHESIS               (
+LEFT_BRACKET                   [
+LEFT_BRACE                     {
+COMMA                          ,
+PERIOD                         .
+
+RIGHT_PARENTHESIS              )
+RIGHT_BRACKET                  ]
+RIGHT_BRACE                    }
+SEMICOLON                      ;
+COLON                          :
+QUESTION_MARK                  ?
+
+firstKeyword
+IF
+IN
+DO
+
+VAR
+FOR
+NEW
+TRY
+
+THIS
+ELSE
+CASE
+VOID
+WITH
+
+WHILE
+BREAK
+CATCH
+THROW
+
+RETURN
+TYPEOF
+DELETE
+SWITCH
+
+DEFAULT
+FINALLY
+
+FUNCTION
+CONTINUE
+DEBUGGER
+
+INSTANCEOF
+lastKeyword
+_END_
+        chomp;
+
+        next if m/^\s*#/;
+
+        my ($name, $symbol) = m/(\w+)\s*(\S+)?/;
+
+        if (defined $symbol) {
+            push @order, $name;
+            push @const, "$name // $symbol";
+            $token{$name} = $symbol;
+        } elsif (defined $name) {
+            $keywords ||= $name eq 'firstKeyword';
+
+            push @const, $name;
+            #$const[-1] .= " Token = iota" if 2 == @const;
+            if ($name =~ m/^([A-Z]+)/) {
+                push @keywords, $name if $keywords;
+                push @order, $name;
+                if ($token{SEMICOLON}) {
+                    $token{$name} = lc $1;
+                } else {
+                    $token{$name} = $name;
+                }
+            }
+        } else {
+            push @const, "";
+        }
+
+    }
+    push @const, ")";
+    print join "\n", @const, "";
+}
+
+{
+    print <<_END_;
+
+var token2string = [...]string{
+_END_
+    for my $name (@order) {
+        print "$name: \"$token{$name}\",\n";
+    }
+    print <<_END_;
+}
+_END_
+
+    print <<_END_;
+
+var keywordTable = map[string]_keyword{
+_END_
+    for my $name (@keywords) {
+        print <<_END_
+			"@{[ lc $name ]}": _keyword{
+				token: $name,
+			},
+_END_
+    }
+
+    for my $name (qw/
+        const
+        class
+        enum
+        export
+        extends
+        import
+        super
+        /) {
+        print <<_END_
+			"$name": _keyword{
+				token: KEYWORD,
+                futureKeyword: true,
+			},
+_END_
+    }
+
+    for my $name (qw/
+        implements
+        interface
+        let
+        package
+        private
+        protected
+        public
+        static
+        /) {
+        print <<_END_
+			"$name": _keyword{
+				token: KEYWORD,
+                futureKeyword: true,
+                strict: true,
+			},
+_END_
+    }
+
+    print <<_END_;
+}
+_END_
+}

vendor/github.com/robertkrimen/otto/type_arguments.go

@@ -0,0 +1,106 @@
+package otto
+
+import (
+	"strconv"
+)
+
+func (runtime *_runtime) newArgumentsObject(indexOfParameterName []string, stash _stash, length int) *_object {
+	self := runtime.newClassObject("Arguments")
+
+	for index, _ := range indexOfParameterName {
+		name := strconv.FormatInt(int64(index), 10)
+		objectDefineOwnProperty(self, name, _property{Value{}, 0111}, false)
+	}
+
+	self.objectClass = _classArguments
+	self.value = _argumentsObject{
+		indexOfParameterName: indexOfParameterName,
+		stash:                stash,
+	}
+
+	self.prototype = runtime.global.ObjectPrototype
+
+	self.defineProperty(propertyLength, toValue_int(length), 0101, false)
+
+	return self
+}
+
+type _argumentsObject struct {
+	indexOfParameterName []string
+	// function(abc, def, ghi)
+	// indexOfParameterName[0] = "abc"
+	// indexOfParameterName[1] = "def"
+	// indexOfParameterName[2] = "ghi"
+	// ...
+	stash _stash
+}
+
+func (in _argumentsObject) clone(clone *_clone) _argumentsObject {
+	indexOfParameterName := make([]string, len(in.indexOfParameterName))
+	copy(indexOfParameterName, in.indexOfParameterName)
+	return _argumentsObject{
+		indexOfParameterName,
+		clone.stash(in.stash),
+	}
+}
+
+func (self _argumentsObject) get(name string) (Value, bool) {
+	index := stringToArrayIndex(name)
+	if index >= 0 && index < int64(len(self.indexOfParameterName)) {
+		name := self.indexOfParameterName[index]
+		if name == "" {
+			return Value{}, false
+		}
+		return self.stash.getBinding(name, false), true
+	}
+	return Value{}, false
+}
+
+func (self _argumentsObject) put(name string, value Value) {
+	index := stringToArrayIndex(name)
+	name = self.indexOfParameterName[index]
+	self.stash.setBinding(name, value, false)
+}
+
+func (self _argumentsObject) delete(name string) {
+	index := stringToArrayIndex(name)
+	self.indexOfParameterName[index] = ""
+}
+
+func argumentsGet(self *_object, name string) Value {
+	if value, exists := self.value.(_argumentsObject).get(name); exists {
+		return value
+	}
+	return objectGet(self, name)
+}
+
+func argumentsGetOwnProperty(self *_object, name string) *_property {
+	property := objectGetOwnProperty(self, name)
+	if value, exists := self.value.(_argumentsObject).get(name); exists {
+		property.value = value
+	}
+	return property
+}
+
+func argumentsDefineOwnProperty(self *_object, name string, descriptor _property, throw bool) bool {
+	if _, exists := self.value.(_argumentsObject).get(name); exists {
+		if !objectDefineOwnProperty(self, name, descriptor, false) {
+			return self.runtime.typeErrorResult(throw)
+		}
+		if value, valid := descriptor.value.(Value); valid {
+			self.value.(_argumentsObject).put(name, value)
+		}
+		return true
+	}
+	return objectDefineOwnProperty(self, name, descriptor, throw)
+}
+
+func argumentsDelete(self *_object, name string, throw bool) bool {
+	if !objectDelete(self, name, throw) {
+		return false
+	}
+	if _, exists := self.value.(_argumentsObject).get(name); exists {
+		self.value.(_argumentsObject).delete(name)
+	}
+	return true
+}

vendor/github.com/robertkrimen/otto/type_array.go

@@ -0,0 +1,109 @@
+package otto
+
+import (
+	"strconv"
+)
+
+func (runtime *_runtime) newArrayObject(length uint32) *_object {
+	self := runtime.newObject()
+	self.class = classArray
+	self.defineProperty(propertyLength, toValue_uint32(length), 0100, false)
+	self.objectClass = _classArray
+	return self
+}
+
+func isArray(object *_object) bool {
+	return object != nil && (object.class == classArray || object.class == classGoArray)
+}
+
+func objectLength(object *_object) uint32 {
+	if object == nil {
+		return 0
+	}
+	switch object.class {
+	case classArray:
+		return object.get(propertyLength).value.(uint32)
+	case classString:
+		return uint32(object.get(propertyLength).value.(int))
+	case classGoArray:
+		return uint32(object.get(propertyLength).value.(int))
+	}
+	return 0
+}
+
+func arrayUint32(rt *_runtime, value Value) uint32 {
+	nm := value.number()
+	if nm.kind != numberInteger || !isUint32(nm.int64) {
+		// FIXME
+		panic(rt.panicRangeError())
+	}
+	return uint32(nm.int64)
+}
+
+func arrayDefineOwnProperty(self *_object, name string, descriptor _property, throw bool) bool {
+	lengthProperty := self.getOwnProperty(propertyLength)
+	lengthValue, valid := lengthProperty.value.(Value)
+	if !valid {
+		panic("Array.length != Value{}")
+	}
+	length := lengthValue.value.(uint32)
+	if name == propertyLength {
+		if descriptor.value == nil {
+			return objectDefineOwnProperty(self, name, descriptor, throw)
+		}
+		newLengthValue, isValue := descriptor.value.(Value)
+		if !isValue {
+			panic(self.runtime.panicTypeError())
+		}
+		newLength := arrayUint32(self.runtime, newLengthValue)
+		descriptor.value = toValue_uint32(newLength)
+		if newLength > length {
+			return objectDefineOwnProperty(self, name, descriptor, throw)
+		}
+		if !lengthProperty.writable() {
+			goto Reject
+		}
+		newWritable := true
+		if descriptor.mode&0700 == 0 {
+			// If writable is off
+			newWritable = false
+			descriptor.mode |= 0100
+		}
+		if !objectDefineOwnProperty(self, name, descriptor, throw) {
+			return false
+		}
+		for newLength < length {
+			length--
+			if !self.delete(strconv.FormatInt(int64(length), 10), false) {
+				descriptor.value = toValue_uint32(length + 1)
+				if !newWritable {
+					descriptor.mode &= 0077
+				}
+				objectDefineOwnProperty(self, name, descriptor, false)
+				goto Reject
+			}
+		}
+		if !newWritable {
+			descriptor.mode &= 0077
+			objectDefineOwnProperty(self, name, descriptor, false)
+		}
+	} else if index := stringToArrayIndex(name); index >= 0 {
+		if index >= int64(length) && !lengthProperty.writable() {
+			goto Reject
+		}
+		if !objectDefineOwnProperty(self, strconv.FormatInt(index, 10), descriptor, false) {
+			goto Reject
+		}
+		if index >= int64(length) {
+			lengthProperty.value = toValue_uint32(uint32(index + 1))
+			objectDefineOwnProperty(self, propertyLength, *lengthProperty, false)
+			return true
+		}
+	}
+	return objectDefineOwnProperty(self, name, descriptor, throw)
+Reject:
+	if throw {
+		panic(self.runtime.panicTypeError())
+	}
+	return false
+}

vendor/github.com/robertkrimen/otto/type_boolean.go

@@ -0,0 +1,5 @@
+package otto
+
+func (runtime *_runtime) newBooleanObject(value Value) *_object {
+	return runtime.newPrimitiveObject(classBoolean, toValue_bool(value.bool()))
+}

vendor/github.com/robertkrimen/otto/type_date.go

@@ -0,0 +1,288 @@
+package otto
+
+import (
+	"fmt"
+	"math"
+	"regexp"
+	Time "time"
+)
+
+type _dateObject struct {
+	time  Time.Time // Time from the "time" package, a cached version of time
+	epoch int64
+	value Value
+	isNaN bool
+}
+
+var (
+	invalidDateObject = _dateObject{
+		time:  Time.Time{},
+		epoch: -1,
+		value: NaNValue(),
+		isNaN: true,
+	}
+)
+
+type _ecmaTime struct {
+	year        int
+	month       int
+	day         int
+	hour        int
+	minute      int
+	second      int
+	millisecond int
+	location    *Time.Location // Basically, either local or UTC
+}
+
+func ecmaTime(goTime Time.Time) _ecmaTime {
+	return _ecmaTime{
+		goTime.Year(),
+		dateFromGoMonth(goTime.Month()),
+		goTime.Day(),
+		goTime.Hour(),
+		goTime.Minute(),
+		goTime.Second(),
+		goTime.Nanosecond() / (100 * 100 * 100),
+		goTime.Location(),
+	}
+}
+
+func (self *_ecmaTime) goTime() Time.Time {
+	return Time.Date(
+		self.year,
+		dateToGoMonth(self.month),
+		self.day,
+		self.hour,
+		self.minute,
+		self.second,
+		self.millisecond*(100*100*100),
+		self.location,
+	)
+}
+
+func (self *_dateObject) Time() Time.Time {
+	return self.time
+}
+
+func (self *_dateObject) Epoch() int64 {
+	return self.epoch
+}
+
+func (self *_dateObject) Value() Value {
+	return self.value
+}
+
+// FIXME A date should only be in the range of -100,000,000 to +100,000,000 (1970): 15.9.1.1
+func (self *_dateObject) SetNaN() {
+	self.time = Time.Time{}
+	self.epoch = -1
+	self.value = NaNValue()
+	self.isNaN = true
+}
+
+func (self *_dateObject) SetTime(time Time.Time) {
+	self.Set(timeToEpoch(time))
+}
+
+func (self *_dateObject) Set(epoch float64) {
+	// epoch
+	self.epoch = epochToInteger(epoch)
+
+	// time
+	time, err := epochToTime(epoch)
+	self.time = time // Is either a valid time, or the zero-value for time.Time
+
+	// value & isNaN
+	if err != nil {
+		self.isNaN = true
+		self.epoch = -1
+		self.value = NaNValue()
+	} else {
+		self.value = toValue_int64(self.epoch)
+	}
+}
+
+func epochToInteger(value float64) int64 {
+	if value > 0 {
+		return int64(math.Floor(value))
+	}
+	return int64(math.Ceil(value))
+}
+
+func epochToTime(value float64) (time Time.Time, err error) {
+	epochWithMilli := value
+	if math.IsNaN(epochWithMilli) || math.IsInf(epochWithMilli, 0) {
+		err = fmt.Errorf("Invalid time %v", value)
+		return
+	}
+
+	epoch := int64(epochWithMilli / 1000)
+	milli := int64(epochWithMilli) % 1000
+
+	time = Time.Unix(int64(epoch), milli*1000000).UTC()
+	return
+}
+
+func timeToEpoch(time Time.Time) float64 {
+	return float64(time.UnixNano() / (1000 * 1000))
+}
+
+func (runtime *_runtime) newDateObject(epoch float64) *_object {
+	self := runtime.newObject()
+	self.class = classDate
+
+	// FIXME This is ugly...
+	date := _dateObject{}
+	date.Set(epoch)
+	self.value = date
+	return self
+}
+
+func (self *_object) dateValue() _dateObject {
+	value, _ := self.value.(_dateObject)
+	return value
+}
+
+func dateObjectOf(rt *_runtime, _dateObject *_object) _dateObject {
+	if _dateObject == nil || _dateObject.class != classDate {
+		panic(rt.panicTypeError())
+	}
+	return _dateObject.dateValue()
+}
+
+// JavaScript is 0-based, Go is 1-based (15.9.1.4)
+func dateToGoMonth(month int) Time.Month {
+	return Time.Month(month + 1)
+}
+
+func dateFromGoMonth(month Time.Month) int {
+	return int(month) - 1
+}
+
+func dateFromGoDay(day Time.Weekday) int {
+	return int(day)
+}
+
+func newDateTime(argumentList []Value, location *Time.Location) (epoch float64) {
+
+	pick := func(index int, default_ float64) (float64, bool) {
+		if index >= len(argumentList) {
+			return default_, false
+		}
+		value := argumentList[index].float64()
+		if math.IsNaN(value) || math.IsInf(value, 0) {
+			return 0, true
+		}
+		return value, false
+	}
+
+	if len(argumentList) >= 2 { // 2-argument, 3-argument, ...
+		var year, month, day, hour, minute, second, millisecond float64
+		var invalid bool
+		if year, invalid = pick(0, 1900.0); invalid {
+			goto INVALID
+		}
+		if month, invalid = pick(1, 0.0); invalid {
+			goto INVALID
+		}
+		if day, invalid = pick(2, 1.0); invalid {
+			goto INVALID
+		}
+		if hour, invalid = pick(3, 0.0); invalid {
+			goto INVALID
+		}
+		if minute, invalid = pick(4, 0.0); invalid {
+			goto INVALID
+		}
+		if second, invalid = pick(5, 0.0); invalid {
+			goto INVALID
+		}
+		if millisecond, invalid = pick(6, 0.0); invalid {
+			goto INVALID
+		}
+
+		if year >= 0 && year <= 99 {
+			year += 1900
+		}
+
+		time := Time.Date(int(year), dateToGoMonth(int(month)), int(day), int(hour), int(minute), int(second), int(millisecond)*1000*1000, location)
+		return timeToEpoch(time)
+
+	} else if len(argumentList) == 0 { // 0-argument
+		time := Time.Now().UTC()
+		return timeToEpoch(time)
+	} else { // 1-argument
+		value := valueOfArrayIndex(argumentList, 0)
+		value = toPrimitive(value)
+		if value.IsString() {
+			return dateParse(value.string())
+		}
+
+		return value.float64()
+	}
+
+INVALID:
+	epoch = math.NaN()
+	return
+}
+
+var (
+	dateLayoutList = []string{
+		"2006",
+		"2006-01",
+		"2006-01-02",
+
+		"2006T15:04",
+		"2006-01T15:04",
+		"2006-01-02T15:04",
+
+		"2006T15:04:05",
+		"2006-01T15:04:05",
+		"2006-01-02T15:04:05",
+
+		"2006T15:04:05.000",
+		"2006-01T15:04:05.000",
+		"2006-01-02T15:04:05.000",
+
+		"2006T15:04-0700",
+		"2006-01T15:04-0700",
+		"2006-01-02T15:04-0700",
+
+		"2006T15:04:05-0700",
+		"2006-01T15:04:05-0700",
+		"2006-01-02T15:04:05-0700",
+
+		"2006T15:04:05.000-0700",
+		"2006-01T15:04:05.000-0700",
+		"2006-01-02T15:04:05.000-0700",
+
+		Time.RFC1123,
+	}
+	matchDateTimeZone = regexp.MustCompile(`^(.*)(?:(Z)|([\+\-]\d{2}):(\d{2}))$`)
+)
+
+func dateParse(date string) (epoch float64) {
+	// YYYY-MM-DDTHH:mm:ss.sssZ
+	var time Time.Time
+	var err error
+	{
+		date := date
+		if match := matchDateTimeZone.FindStringSubmatch(date); match != nil {
+			if match[2] == "Z" {
+				date = match[1] + "+0000"
+			} else {
+				date = match[1] + match[3] + match[4]
+			}
+		}
+		for _, layout := range dateLayoutList {
+			time, err = Time.Parse(layout, date)
+			if err == nil {
+				break
+			}
+		}
+	}
+	if err != nil {
+		return math.NaN()
+	}
+	return float64(time.UnixNano()) / (1000 * 1000) // UnixMilli()
+}

vendor/github.com/robertkrimen/otto/type_error.go

@@ -0,0 +1,24 @@
+package otto
+
+func (rt *_runtime) newErrorObject(name string, message Value, stackFramesToPop int) *_object {
+	self := rt.newClassObject(classError)
+	if message.IsDefined() {
+		msg := message.string()
+		self.defineProperty("message", toValue_string(msg), 0111, false)
+		self.value = newError(rt, name, stackFramesToPop, msg)
+	} else {
+		self.value = newError(rt, name, stackFramesToPop)
+	}
+
+	self.defineOwnProperty("stack", _property{
+		value: _propertyGetSet{
+			rt.newNativeFunction("get", "internal", 0, func(FunctionCall) Value {
+				return toValue_string(self.value.(_error).formatWithStack())
+			}),
+			&_nilGetSetObject,
+		},
+		mode: modeConfigureMask & modeOnMask,
+	}, false)
+
+	return self
+}

vendor/github.com/robertkrimen/otto/type_function.go

@@ -0,0 +1,340 @@
+package otto
+
+// _constructFunction
+type _constructFunction func(*_object, []Value) Value
+
+// 13.2.2 [[Construct]]
+func defaultConstruct(fn *_object, argumentList []Value) Value {
+	object := fn.runtime.newObject()
+	object.class = classObject
+
+	prototype := fn.get("prototype")
+	if prototype.kind != valueObject {
+		prototype = toValue_object(fn.runtime.global.ObjectPrototype)
+	}
+	object.prototype = prototype._object()
+
+	this := toValue_object(object)
+	value := fn.call(this, argumentList, false, nativeFrame)
+	if value.kind == valueObject {
+		return value
+	}
+	return this
+}
+
+// _nativeFunction
+type _nativeFunction func(FunctionCall) Value
+
+// ===================== //
+// _nativeFunctionObject //
+// ===================== //
+
+type _nativeFunctionObject struct {
+	name      string
+	file      string
+	line      int
+	call      _nativeFunction    // [[Call]]
+	construct _constructFunction // [[Construct]]
+}
+
+func (runtime *_runtime) _newNativeFunctionObject(name, file string, line int, native _nativeFunction, length int) *_object {
+	self := runtime.newClassObject(classFunction)
+	self.value = _nativeFunctionObject{
+		name:      name,
+		file:      file,
+		line:      line,
+		call:      native,
+		construct: defaultConstruct,
+	}
+	self.defineProperty("name", toValue_string(name), 0000, false)
+	self.defineProperty(propertyLength, toValue_int(length), 0000, false)
+	return self
+}
+
+func (runtime *_runtime) newNativeFunctionObject(name, file string, line int, native _nativeFunction, length int) *_object {
+	self := runtime._newNativeFunctionObject(name, file, line, native, length)
+	self.defineOwnProperty("caller", _property{
+		value: _propertyGetSet{
+			runtime._newNativeFunctionObject("get", "internal", 0, func(fc FunctionCall) Value {
+				for sc := runtime.scope; sc != nil; sc = sc.outer {
+					if sc.frame.fn == self {
+						if sc.outer == nil || sc.outer.frame.fn == nil {
+							return nullValue
+						}
+
+						return runtime.toValue(sc.outer.frame.fn)
+					}
+				}
+
+				return nullValue
+			}, 0),
+			&_nilGetSetObject,
+		},
+		mode: 0000,
+	}, false)
+	return self
+}
+
+// =================== //
+// _bindFunctionObject //
+// =================== //
+
+type _bindFunctionObject struct {
+	target       *_object
+	this         Value
+	argumentList []Value
+}
+
+func (runtime *_runtime) newBoundFunctionObject(target *_object, this Value, argumentList []Value) *_object {
+	self := runtime.newClassObject(classFunction)
+	self.value = _bindFunctionObject{
+		target:       target,
+		this:         this,
+		argumentList: argumentList,
+	}
+	length := int(toInt32(target.get(propertyLength)))
+	length -= len(argumentList)
+	if length < 0 {
+		length = 0
+	}
+	self.defineProperty("name", toValue_string("bound "+target.get("name").String()), 0000, false)
+	self.defineProperty(propertyLength, toValue_int(length), 0000, false)
+	self.defineProperty("caller", Value{}, 0000, false)    // TODO Should throw a TypeError
+	self.defineProperty("arguments", Value{}, 0000, false) // TODO Should throw a TypeError
+	return self
+}
+
+// [[Construct]]
+func (fn _bindFunctionObject) construct(argumentList []Value) Value {
+	object := fn.target
+	switch value := object.value.(type) {
+	case _nativeFunctionObject:
+		return value.construct(object, fn.argumentList)
+	case _nodeFunctionObject:
+		argumentList = append(fn.argumentList, argumentList...)
+		return object.construct(argumentList)
+	}
+	panic(fn.target.runtime.panicTypeError())
+}
+
+// =================== //
+// _nodeFunctionObject //
+// =================== //
+
+type _nodeFunctionObject struct {
+	node  *_nodeFunctionLiteral
+	stash _stash
+}
+
+func (runtime *_runtime) newNodeFunctionObject(node *_nodeFunctionLiteral, stash _stash) *_object {
+	self := runtime.newClassObject(classFunction)
+	self.value = _nodeFunctionObject{
+		node:  node,
+		stash: stash,
+	}
+	self.defineProperty("name", toValue_string(node.name), 0000, false)
+	self.defineProperty(propertyLength, toValue_int(len(node.parameterList)), 0000, false)
+	self.defineOwnProperty("caller", _property{
+		value: _propertyGetSet{
+			runtime.newNativeFunction("get", "internal", 0, func(fc FunctionCall) Value {
+				for sc := runtime.scope; sc != nil; sc = sc.outer {
+					if sc.frame.fn == self {
+						if sc.outer == nil || sc.outer.frame.fn == nil {
+							return nullValue
+						}
+
+						return runtime.toValue(sc.outer.frame.fn)
+					}
+				}
+
+				return nullValue
+			}),
+			&_nilGetSetObject,
+		},
+		mode: 0000,
+	}, false)
+	return self
+}
+
+// ======= //
+// _object //
+// ======= //
+
+func (self *_object) isCall() bool {
+	switch fn := self.value.(type) {
+	case _nativeFunctionObject:
+		return fn.call != nil
+	case _bindFunctionObject:
+		return true
+	case _nodeFunctionObject:
+		return true
+	}
+	return false
+}
+
+func (self *_object) call(this Value, argumentList []Value, eval bool, frame _frame) Value {
+	switch fn := self.value.(type) {
+
+	case _nativeFunctionObject:
+		// Since eval is a native function, we only have to check for it here
+		if eval {
+			eval = self == self.runtime.eval // If eval is true, then it IS a direct eval
+		}
+
+		// Enter a scope, name from the native object...
+		rt := self.runtime
+		if rt.scope != nil && !eval {
+			rt.enterFunctionScope(rt.scope.lexical, this)
+			rt.scope.frame = _frame{
+				native:     true,
+				nativeFile: fn.file,
+				nativeLine: fn.line,
+				callee:     fn.name,
+				file:       nil,
+				fn:         self,
+			}
+			defer func() {
+				rt.leaveScope()
+			}()
+		}
+
+		return fn.call(FunctionCall{
+			runtime: self.runtime,
+			eval:    eval,
+
+			This:         this,
+			ArgumentList: argumentList,
+			Otto:         self.runtime.otto,
+		})
+
+	case _bindFunctionObject:
+		// TODO Passthrough site, do not enter a scope
+		argumentList = append(fn.argumentList, argumentList...)
+		return fn.target.call(fn.this, argumentList, false, frame)
+
+	case _nodeFunctionObject:
+		rt := self.runtime
+		stash := rt.enterFunctionScope(fn.stash, this)
+		rt.scope.frame = _frame{
+			callee: fn.node.name,
+			file:   fn.node.file,
+			fn:     self,
+		}
+		defer func() {
+			rt.leaveScope()
+		}()
+		callValue := rt.cmpl_call_nodeFunction(self, stash, fn.node, this, argumentList)
+		if value, valid := callValue.value.(_result); valid {
+			return value.value
+		}
+		return callValue
+	}
+
+	panic(self.runtime.panicTypeError("%v is not a function", toValue_object(self)))
+}
+
+func (self *_object) construct(argumentList []Value) Value {
+	switch fn := self.value.(type) {
+
+	case _nativeFunctionObject:
+		if fn.call == nil {
+			panic(self.runtime.panicTypeError("%v is not a function", toValue_object(self)))
+		}
+		if fn.construct == nil {
+			panic(self.runtime.panicTypeError("%v is not a constructor", toValue_object(self)))
+		}
+		return fn.construct(self, argumentList)
+
+	case _bindFunctionObject:
+		return fn.construct(argumentList)
+
+	case _nodeFunctionObject:
+		return defaultConstruct(self, argumentList)
+	}
+
+	panic(self.runtime.panicTypeError("%v is not a function", toValue_object(self)))
+}
+
+// 15.3.5.3
+func (self *_object) hasInstance(of Value) bool {
+	if !self.isCall() {
+		// We should not have a hasInstance method
+		panic(self.runtime.panicTypeError())
+	}
+	if !of.IsObject() {
+		return false
+	}
+	prototype := self.get("prototype")
+	if !prototype.IsObject() {
+		panic(self.runtime.panicTypeError())
+	}
+	prototypeObject := prototype._object()
+
+	value := of._object().prototype
+	for value != nil {
+		if value == prototypeObject {
+			return true
+		}
+		value = value.prototype
+	}
+	return false
+}
+
+// ============ //
+// FunctionCall //
+// ============ //
+
+// FunctionCall is an encapsulation of a JavaScript function call.
+type FunctionCall struct {
+	runtime     *_runtime
+	_thisObject *_object
+	eval        bool // This call is a direct call to eval
+
+	This         Value
+	ArgumentList []Value
+	Otto         *Otto
+}
+
+// Argument will return the value of the argument at the given index.
+//
+// If no such argument exists, undefined is returned.
+func (self FunctionCall) Argument(index int) Value {
+	return valueOfArrayIndex(self.ArgumentList, index)
+}
+
+func (self FunctionCall) getArgument(index int) (Value, bool) {
+	return getValueOfArrayIndex(self.ArgumentList, index)
+}
+
+func (self FunctionCall) slice(index int) []Value {
+	if index < len(self.ArgumentList) {
+		return self.ArgumentList[index:]
+	}
+	return []Value{}
+}
+
+func (self *FunctionCall) thisObject() *_object {
+	if self._thisObject == nil {
+		this := self.This.resolve() // FIXME Is this right?
+		self._thisObject = self.runtime.toObject(this)
+	}
+	return self._thisObject
+}
+
+func (self *FunctionCall) thisClassObject(class string) *_object {
+	thisObject := self.thisObject()
+	if thisObject.class != class {
+		panic(self.runtime.panicTypeError())
+	}
+	return self._thisObject
+}
+
+func (self FunctionCall) toObject(value Value) *_object {
+	return self.runtime.toObject(value)
+}
+
+// CallerLocation will return file location information (file:line:pos) where this function is being called.
+func (self FunctionCall) CallerLocation() string {
+	// see error.go for location()
+	return self.runtime.scope.outer.frame.location()
+}