forked from cerc-io/plugeth
146 lines
2.9 KiB
Go
146 lines
2.9 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"github.com/ethereum/eth-go"
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"github.com/ethereum/eth-go/ethpub"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/obscuren/otto"
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"io"
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"os"
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"path"
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)
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type Repl interface {
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Start()
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Stop()
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}
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type JSRepl struct {
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re *JSRE
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prompt string
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history *os.File
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}
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func NewJSRepl(ethereum *eth.Ethereum) *JSRepl {
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hist, err := os.OpenFile(path.Join(ethutil.Config.ExecPath, "history"), os.O_RDWR|os.O_CREATE, os.ModePerm)
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if err != nil {
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panic(err)
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}
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return &JSRepl{re: NewJSRE(ethereum), prompt: "> ", history: hist}
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}
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func (self *JSRepl) Start() {
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logger.Infoln("init JS Console")
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reader := bufio.NewReader(self.history)
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for {
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line, err := reader.ReadString('\n')
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if err != nil && err == io.EOF {
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break
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} else if err != nil {
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fmt.Println("error reading history", err)
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break
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}
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addHistory(line[:len(line)-1])
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}
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self.read()
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}
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func (self *JSRepl) Stop() {
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self.re.Stop()
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logger.Infoln("exit JS Console")
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self.history.Close()
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}
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func (self *JSRepl) parseInput(code string) {
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defer func() {
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if r := recover(); r != nil {
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fmt.Println("[native] error", r)
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}
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}()
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value, err := self.re.Run(code)
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if err != nil {
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fmt.Println(err)
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return
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}
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self.PrintValue(value)
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}
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// The JSEthereum object attempts to wrap the PEthereum object and returns
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// meaningful javascript objects
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type JSBlock struct {
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*ethpub.PBlock
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eth *JSEthereum
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}
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func (self *JSBlock) GetTransaction(hash string) otto.Value {
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return self.eth.toVal(self.PBlock.GetTransaction(hash))
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}
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type JSEthereum struct {
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*ethpub.PEthereum
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vm *otto.Otto
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}
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func (self *JSEthereum) GetBlock(hash string) otto.Value {
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return self.toVal(&JSBlock{self.PEthereum.GetBlock(hash), self})
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}
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func (self *JSEthereum) GetPeers() otto.Value {
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return self.toVal(self.PEthereum.GetPeers())
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}
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func (self *JSEthereum) GetKey() otto.Value {
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return self.toVal(self.PEthereum.GetKey())
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}
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func (self *JSEthereum) GetStateObject(addr string) otto.Value {
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return self.toVal(self.PEthereum.GetStateObject(addr))
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}
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func (self *JSEthereum) GetStateKeyVals(addr string) otto.Value {
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return self.toVal(self.PEthereum.GetStateObject(addr).StateKeyVal(false))
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}
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func (self *JSEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) otto.Value {
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r, err := self.PEthereum.Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr)
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if err != nil {
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fmt.Println(err)
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return otto.UndefinedValue()
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}
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return self.toVal(r)
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}
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func (self *JSEthereum) Create(key, valueStr, gasStr, gasPriceStr, scriptStr string) otto.Value {
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r, err := self.PEthereum.Create(key, valueStr, gasStr, gasPriceStr, scriptStr)
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if err != nil {
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fmt.Println(err)
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return otto.UndefinedValue()
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}
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return self.toVal(r)
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}
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func (self *JSEthereum) toVal(v interface{}) otto.Value {
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result, err := self.vm.ToValue(v)
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if err != nil {
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fmt.Println("Value unknown:", err)
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return otto.UndefinedValue()
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}
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return result
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}
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