67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
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package helper
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/eth-go/ethstate"
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"github.com/ethereum/eth-go/ethtrie"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/ethereum/eth-go/ethvm"
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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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}
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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["currentTime"]).Int64()
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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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// This is likely to fail if anything ever gets looked up in the state trie :-)
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func (self *Env) State() *ethstate.State { return ethstate.New(ethtrie.New(nil, "")) }
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func RunVm(state *ethstate.State, env, exec map[string]string) ([]byte, *big.Int) {
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caller := state.NewStateObject(ethutil.Hex2Bytes(exec["caller"]))
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callee := state.GetStateObject(ethutil.Hex2Bytes(exec["address"]))
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closure := ethvm.NewClosure(nil, caller, callee, callee.Code, ethutil.Big(exec["gas"]), ethutil.Big(exec["gasPrice"]))
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vm := ethvm.New(NewEnvFromMap(state, env, exec), ethvm.DebugVmTy)
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ret, _, e := closure.Call(vm, nil)
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if e != nil {
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fmt.Println(e)
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}
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return ret, closure.Gas
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}
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