package helper import ( "math/big" "github.com/ethereum/go-ethereum/ethutil" "github.com/ethereum/go-ethereum/state" "github.com/ethereum/go-ethereum/vm" ) type Env struct { state *state.State origin []byte parent []byte coinbase []byte number *big.Int time int64 difficulty *big.Int gasLimit *big.Int } func NewEnv(state *state.State) *Env { return &Env{ state: state, } } func NewEnvFromMap(state *state.State, envValues map[string]string, exeValues map[string]string) *Env { env := NewEnv(state) env.origin = ethutil.Hex2Bytes(exeValues["caller"]) env.parent = ethutil.Hex2Bytes(envValues["previousHash"]) env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"]) env.number = ethutil.Big(envValues["currentNumber"]) env.time = ethutil.Big(envValues["currentTimestamp"]).Int64() env.difficulty = ethutil.Big(envValues["currentDifficulty"]) env.gasLimit = ethutil.Big(envValues["currentGasLimit"]) return env } func (self *Env) Origin() []byte { return self.origin } func (self *Env) BlockNumber() *big.Int { return self.number } func (self *Env) PrevHash() []byte { return self.parent } func (self *Env) Coinbase() []byte { return self.coinbase } func (self *Env) Time() int64 { return self.time } func (self *Env) Difficulty() *big.Int { return self.difficulty } func (self *Env) BlockHash() []byte { return nil } func (self *Env) State() *state.State { return self.state } func (self *Env) GasLimit() *big.Int { return self.gasLimit } func (self *Env) AddLog(state.Log) {} func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error { return vm.Transfer(from, to, amount) } func RunVm(state *state.State, env, exec map[string]string) ([]byte, *big.Int, error) { address := FromHex(exec["address"]) caller := state.GetOrNewStateObject(FromHex(exec["caller"])) evm := vm.New(NewEnvFromMap(state, env, exec), vm.DebugVmTy) execution := vm.NewExecution(evm, address, FromHex(exec["data"]), ethutil.Big(exec["gas"]), ethutil.Big(exec["gasPrice"]), ethutil.Big(exec["value"])) execution.SkipTransfer = true ret, err := execution.Exec(address, caller) return ret, execution.Gas, err }