ca1b2a1a91
* PREVHASH => BLOCKHASH( N ) * State transition object uses VMEnv as it's query interface * Updated vm.Enviroment has GetHash( n ) for BLOCKHASH instruction * Added GetHash to xeth, core, utils & test environments
79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
package utils
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/state"
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"github.com/ethereum/go-ethereum/vm"
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)
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type VMEnv struct {
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chain *core.ChainManager
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state *state.StateDB
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block *types.Block
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transactor []byte
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value *big.Int
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depth int
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Gas *big.Int
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}
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func NewEnv(chain *core.ChainManager, state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv {
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return &VMEnv{
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chain: chain,
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state: state,
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block: block,
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transactor: transactor,
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value: value,
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}
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}
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func (self *VMEnv) Origin() []byte { return self.transactor }
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func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number() }
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func (self *VMEnv) PrevHash() []byte { return self.block.ParentHash() }
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func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase() }
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func (self *VMEnv) Time() int64 { return self.block.Time() }
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func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty() }
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func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit() }
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func (self *VMEnv) Value() *big.Int { return self.value }
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func (self *VMEnv) State() *state.StateDB { return self.state }
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func (self *VMEnv) Depth() int { return self.depth }
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func (self *VMEnv) SetDepth(i int) { self.depth = i }
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func (self *VMEnv) GetHash(n uint64) []byte {
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if block := self.chain.GetBlockByNumber(n); block != nil {
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return block.Hash()
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}
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return nil
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}
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func (self *VMEnv) AddLog(log state.Log) {
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self.state.AddLog(log)
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}
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func (self *VMEnv) 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 (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
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return core.NewExecution(self, addr, data, gas, price, value)
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}
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func (self *VMEnv) Call(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
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exe := self.vm(addr, data, gas, price, value)
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ret, err := exe.Call(addr, caller)
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self.Gas = exe.Gas
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return ret, err
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}
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func (self *VMEnv) CallCode(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
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exe := self.vm(caller.Address(), data, gas, price, value)
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return exe.Call(addr, caller)
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}
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func (self *VMEnv) Create(caller vm.ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
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exe := self.vm(addr, data, gas, price, value)
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return exe.Create(caller)
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}
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