From cbce882f5e35300016055cde81eeccb3ae052671 Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Thu, 15 May 2014 20:45:19 +0200
Subject: [PATCH] Basic javascript console

---
 ethereum/config.go             |  2 +
 ethereum/ethereum.go           |  7 ++++
 ethereum/javascript_console.go | 76 ++++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 ethereum/javascript_console.go

diff --git a/ethereum/config.go b/ethereum/config.go
index 7ca1a9801..4d7ea6310 100644
--- a/ethereum/config.go
+++ b/ethereum/config.go
@@ -20,6 +20,7 @@ var ExportKey bool
 var LogFile string
 var DataDir string
 var NonInteractive bool
+var StartExp bool
 
 func Init() {
 	flag.BoolVar(&StartConsole, "c", false, "debug and testing console")
@@ -38,6 +39,7 @@ func Init() {
 	flag.StringVar(&DataDir, "dir", ".ethereum", "ethereum data directory")
 	flag.StringVar(&ImportKey, "import", "", "imports the given private key (hex)")
 	flag.IntVar(&MaxPeer, "x", 5, "maximum desired peers")
+	flag.BoolVar(&StartExp, "ex", false, "exp")
 
 	flag.Parse()
 }
diff --git a/ethereum/ethereum.go b/ethereum/ethereum.go
index 2abf6da42..8b42c2a2c 100644
--- a/ethereum/ethereum.go
+++ b/ethereum/ethereum.go
@@ -146,6 +146,13 @@ save these words so you can restore your account later: %s
 		console := NewConsole(ethereum)
 		go console.Start()
 	}
+
+	if StartExp {
+		c := NewJSConsole(ethereum)
+
+		go c.Start()
+	}
+
 	if StartRpc {
 		utils.DoRpc(ethereum, RpcPort)
 	}
diff --git a/ethereum/javascript_console.go b/ethereum/javascript_console.go
new file mode 100644
index 000000000..a6449af8f
--- /dev/null
+++ b/ethereum/javascript_console.go
@@ -0,0 +1,76 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethpub"
+	"github.com/robertkrimen/otto"
+	"os"
+)
+
+type JSConsole struct {
+	vm  *otto.Otto
+	lib *ethpub.PEthereum
+}
+
+func NewJSConsole(ethereum *eth.Ethereum) *JSConsole {
+	return &JSConsole{vm: otto.New(), lib: ethpub.NewPEthereum(ethereum)}
+}
+
+func (self *JSConsole) Start() {
+	self.initBindings()
+
+	fmt.Println("Eth JS Console")
+	reader := bufio.NewReader(os.Stdin)
+	for {
+		fmt.Printf("eth >>> ")
+		str, _, err := reader.ReadLine()
+		if err != nil {
+			fmt.Println("Error reading input", err)
+		} else {
+			if string(str) == "quit" {
+				return
+			}
+
+			self.ParseInput(string(str))
+		}
+	}
+}
+
+func (self *JSConsole) ParseInput(code string) {
+	value, err := self.vm.Run(code)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	fmt.Println(value)
+}
+
+type OtherStruct struct {
+	Test string
+}
+
+type JSWrapper struct {
+	pub *ethpub.PEthereum
+	vm  *otto.Otto
+}
+
+func (self *JSWrapper) GetKey() otto.Value {
+	result, err := self.vm.ToValue(self.pub.GetKey())
+	if err != nil {
+		fmt.Println(err)
+
+		return otto.UndefinedValue()
+	}
+
+	return result
+
+}
+
+func (self *JSConsole) initBindings() {
+	t := &JSWrapper{self.lib, self.vm}
+
+	self.vm.Set("eth", t)
+}