Basic javascript console

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)
+}