package core import ( "math/big" "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 msg Message depth int chain *ChainManager } func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, block *types.Block) *VMEnv { return &VMEnv{ chain: chain, state: state, block: block, msg: msg, } } func (self *VMEnv) Origin() []byte { return self.msg.From() } func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number() } 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) GasLimit() *big.Int { return self.block.GasLimit() } func (self *VMEnv) Value() *big.Int { return self.msg.Value() } func (self *VMEnv) State() *state.StateDB { return self.state } func (self *VMEnv) Depth() int { return self.depth } func (self *VMEnv) SetDepth(i int) { self.depth = i } func (self *VMEnv) GetHash(n uint64) []byte { if block := self.chain.GetBlockByNumber(n); block != nil { return block.Hash() } return nil } 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) *Execution { return NewExecution(self, addr, data, gas, price, value) } func (self *VMEnv) Call(me vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) { exe := self.vm(addr, data, gas, price, value) return exe.Call(addr, me) } func (self *VMEnv) CallCode(me vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) { exe := self.vm(me.Address(), data, gas, price, value) return exe.Call(addr, me) } func (self *VMEnv) Create(me vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) { exe := self.vm(addr, data, gas, price, value) return exe.Create(me) }