package utils import ( "math/big" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/state" "github.com/ethereum/go-ethereum/vm" ) type VMEnv struct { state *state.StateDB block *types.Block transactor []byte value *big.Int depth int Gas *big.Int } func NewEnv(state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv { return &VMEnv{ state: state, block: block, transactor: transactor, value: value, } } func (self *VMEnv) Origin() []byte { return self.transactor } func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number } func (self *VMEnv) PrevHash() []byte { return self.block.PrevHash } func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase } func (self *VMEnv) Time() int64 { return self.block.Time } func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty } func (self *VMEnv) BlockHash() []byte { return self.block.Hash() } func (self *VMEnv) Value() *big.Int { return self.value } func (self *VMEnv) State() *state.StateDB { return self.state } func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit } func (self *VMEnv) Depth() int { return self.depth } func (self *VMEnv) SetDepth(i int) { self.depth = i } func (self *VMEnv) AddLog(log state.Log) { self.state.AddLog(log) } func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error { return vm.Transfer(from, to, amount) } func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution { return core.NewExecution(self, addr, data, gas, price, value) } func (self *VMEnv) Call(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) { exe := self.vm(addr, data, gas, price, value) ret, err := exe.Call(addr, caller) self.Gas = exe.Gas return ret, err } func (self *VMEnv) CallCode(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) { exe := self.vm(caller.Address(), data, gas, price, value) return exe.Call(addr, caller) } func (self *VMEnv) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) { exe := self.vm(addr, data, gas, price, value) return exe.Create(caller) }