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