package main import ( "fmt" "github.com/ethereum/eth-go" "github.com/ethereum/eth-go/ethpub" "github.com/obscuren/otto" ) type Repl interface { Start() Stop() } type JSRepl struct { re *JSRE prompt string } func NewJSRepl(ethereum *eth.Ethereum) *JSRepl { return &JSRepl{re: NewJSRE(ethereum), prompt: "> "} } func (self *JSRepl) Start() { self.read() } func (self *JSRepl) Stop() { self.re.Stop() } func (self *JSRepl) parseInput(code string) { defer func() { if r := recover(); r != nil { fmt.Println("[native] error", r) } }() value, err := self.re.Run(code) if err != nil { fmt.Println(err) return } self.PrintValue(value) } // The JSEthereum object attempts to wrap the PEthereum object and returns // meaningful javascript objects type JSEthereum struct { *ethpub.PEthereum vm *otto.Otto } func (self *JSEthereum) GetBlock(hash string) otto.Value { return self.toVal(self.PEthereum.GetBlock(hash)) } func (self *JSEthereum) GetKey() otto.Value { return self.toVal(self.PEthereum.GetKey()) } func (self *JSEthereum) GetStateObject(addr string) otto.Value { return self.toVal(self.PEthereum.GetStateObject(addr)) } 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) return otto.UndefinedValue() } return self.toVal(r) } 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 { fmt.Println(err) return otto.UndefinedValue() } return self.toVal(r) } func (self *JSEthereum) toVal(v interface{}) otto.Value { result, err := self.vm.ToValue(v) if err != nil { fmt.Println(err) return otto.UndefinedValue() } return result }