forked from cerc-io/plugeth
114 lines
2.1 KiB
Go
114 lines
2.1 KiB
Go
package main
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import (
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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/robertkrimen/otto"
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)
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type Repl interface {
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Start()
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}
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type JSRE struct {
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vm *otto.Otto
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lib *ethpub.PEthereum
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}
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func NewJSRE(ethereum *eth.Ethereum) *JSRE {
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re := &JSRE{vm: otto.New(), lib: ethpub.NewPEthereum(ethereum)}
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re.Bind("eth", &JSEthereum{re.lib, re.vm})
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return re
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}
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func (self *JSRE) Bind(name string, v interface{}) {
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self.vm.Set(name, v)
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}
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func (self *JSRE) Run(code string) (otto.Value, error) {
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return self.vm.Run(code)
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}
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type JSRepl struct {
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re *JSRE
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}
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func NewJSRepl(ethereum *eth.Ethereum) *JSRepl {
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return &JSRepl{re: NewJSRE(ethereum)}
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}
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func (self *JSRepl) Start() {
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fmt.Println("Eth JavaScript console")
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self.read()
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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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fmt.Println(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 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) 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) 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, initStr, bodyStr string) otto.Value {
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r, err := self.PEthereum.Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr)
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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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// Wrapper function
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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(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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