85 lines
1.7 KiB
Go
85 lines
1.7 KiB
Go
package vm
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import (
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"errors"
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/state"
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)
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type Environment interface {
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State() *state.StateDB
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Origin() []byte
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BlockNumber() *big.Int
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GetHash(n uint64) []byte
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Coinbase() []byte
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Time() int64
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Difficulty() *big.Int
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GasLimit() *big.Int
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Transfer(from, to Account, amount *big.Int) error
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AddLog(state.Log)
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VmType() Type
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Depth() int
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SetDepth(i int)
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Call(me ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error)
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CallCode(me ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error)
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Create(me ContextRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef)
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}
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type Account interface {
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SubBalance(amount *big.Int)
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AddBalance(amount *big.Int)
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Balance() *big.Int
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Address() []byte
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}
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// generic transfer method
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func Transfer(from, to Account, amount *big.Int) error {
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//fmt.Printf(":::%x::: %v < %v\n", from.Address(), from.Balance(), amount)
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if from.Balance().Cmp(amount) < 0 {
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return errors.New("Insufficient balance in account")
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}
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from.SubBalance(amount)
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to.AddBalance(amount)
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return nil
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}
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type Log struct {
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address []byte
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topics [][]byte
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data []byte
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log uint64
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}
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func (self *Log) Address() []byte {
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return self.address
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}
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func (self *Log) Topics() [][]byte {
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return self.topics
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}
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func (self *Log) Data() []byte {
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return self.data
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}
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func (self *Log) Number() uint64 {
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return self.log
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}
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func (self *Log) RlpData() interface{} {
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return []interface{}{self.address, common.ByteSliceToInterface(self.topics), self.data}
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}
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func (self *Log) String() string {
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return fmt.Sprintf("[A=%x T=%x D=%x]", self.address, self.topics, self.data)
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}
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