gaspersic/go-ethereum
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Readline repl for linux & osx

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This commit is contained in:
obscuren
2014-05-17 15:15:46 +02:00
parent 2ac292dc7a
commit 770808ce0d
7 changed files with 122 additions and 39 deletions
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71
ethereum/javascript_console.go
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@@ -1,47 +1,58 @@
package main
import (
"bufio"
"fmt"
"github.com/ethereum/eth-go"
"github.com/ethereum/eth-go/ethpub"
"github.com/robertkrimen/otto"
"os"
)
type JSConsole struct {
type Repl interface {
Start()
}
type JSRE struct {
vm *otto.Otto
lib *ethpub.PEthereum
}
func NewJSConsole(ethereum *eth.Ethereum) *JSConsole {
return &JSConsole{vm: otto.New(), lib: ethpub.NewPEthereum(ethereum)}
func NewJSRE(ethereum *eth.Ethereum) *JSRE {
re := &JSRE{vm: otto.New(), lib: ethpub.NewPEthereum(ethereum)}
re.Bind("eth", &JSEthereum{re.lib, re.vm})
return re
}
func (self *JSConsole) Start() {
self.initBindings()
func (self *JSRE) Bind(name string, v interface{}) {
self.vm.Set(name, v)
}
func (self *JSRE) Run(code string) (otto.Value, error) {
return self.vm.Run(code)
}
type JSRepl struct {
re *JSRE
}
func NewJSRepl(ethereum *eth.Ethereum) *JSRepl {
return &JSRepl{re: NewJSRE(ethereum)}
}
func (self *JSRepl) Start() {
fmt.Println("Eth JavaScript console")
reader := bufio.NewReader(os.Stdin)
for {
fmt.Printf("eth >>> ")
str, _, err := reader.ReadLine()
if err != nil {
fmt.Println("Error reading input", err)
} else {
self.ParseInput(string(str))
}
}
self.read()
}
func (self *JSConsole) ParseInput(code string) {
func (self *JSRepl) parseInput(code string) {
defer func() {
if r := recover(); r != nil {
fmt.Println("[native] error", r)
}
}()
value, err := self.vm.Run(code)
value, err := self.re.Run(code)
if err != nil {
fmt.Println(err)
return
@@ -50,28 +61,22 @@ func (self *JSConsole) ParseInput(code string) {
fmt.Println(value)
}
func (self *JSConsole) initBindings() {
t := &JSWrapper{self.lib, self.vm}
self.vm.Set("eth", t)
}
// The JS wrapper attempts to wrap the PEthereum object and returns
// proper javascript objects
type JSWrapper struct {
// The JSEthereum object attempts to wrap the PEthereum object and returns
// meaningful javascript objects
type JSEthereum struct {
*ethpub.PEthereum
vm *otto.Otto
}
func (self *JSWrapper) GetKey() otto.Value {
func (self *JSEthereum) GetKey() otto.Value {
return self.toVal(self.PEthereum.GetKey())
}
func (self *JSWrapper) GetStateObject(addr string) otto.Value {
func (self *JSEthereum) GetStateObject(addr string) otto.Value {
return self.toVal(self.PEthereum.GetStateObject(addr))
}
func (self *JSWrapper) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) otto.Value {
func (self *JSEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) otto.Value {
r, err := self.PEthereum.Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr)
if err != nil {
fmt.Println(err)
@@ -82,7 +87,7 @@ func (self *JSWrapper) Transact(key, recipient, valueStr, gasStr, gasPriceStr, d
return self.toVal(r)
}
func (self *JSWrapper) Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr string) otto.Value {
func (self *JSEthereum) Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr string) otto.Value {
r, err := self.PEthereum.Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr)
if err != nil {
@@ -95,7 +100,7 @@ func (self *JSWrapper) Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyS
}
// Wrapper function
func (self *JSWrapper) toVal(v interface{}) otto.Value {
func (self *JSEthereum) toVal(v interface{}) otto.Value {
result, err := self.vm.ToValue(v)
if err != nil {