62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package vm
|
|
|
|
import (
|
|
"errors"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
)
|
|
|
|
type Environment interface {
|
|
State() *state.StateDB
|
|
|
|
Origin() common.Address
|
|
BlockNumber() *big.Int
|
|
GetHash(n uint64) common.Hash
|
|
Coinbase() common.Address
|
|
Time() int64
|
|
Difficulty() *big.Int
|
|
GasLimit() *big.Int
|
|
Transfer(from, to Account, amount *big.Int) error
|
|
AddLog(*state.Log)
|
|
AddStructLog(StructLog)
|
|
StructLogs() []StructLog
|
|
|
|
VmType() Type
|
|
|
|
Depth() int
|
|
SetDepth(i int)
|
|
|
|
Call(me ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
|
|
CallCode(me ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)
|
|
Create(me ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef)
|
|
}
|
|
|
|
type StructLog struct {
|
|
Pc uint64
|
|
Op OpCode
|
|
Gas *big.Int
|
|
Memory []byte
|
|
Stack []*big.Int
|
|
}
|
|
|
|
type Account interface {
|
|
SubBalance(amount *big.Int)
|
|
AddBalance(amount *big.Int)
|
|
Balance() *big.Int
|
|
Address() common.Address
|
|
}
|
|
|
|
// generic transfer method
|
|
func Transfer(from, to Account, amount *big.Int) error {
|
|
if from.Balance().Cmp(amount) < 0 {
|
|
return errors.New("Insufficient balance in account")
|
|
}
|
|
|
|
from.SubBalance(amount)
|
|
to.AddBalance(amount)
|
|
|
|
return nil
|
|
}
|