47 lines
855 B
Go
47 lines
855 B
Go
package vm
|
|
|
|
import (
|
|
"errors"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/eth-go/ethstate"
|
|
"github.com/ethereum/eth-go/ethutil"
|
|
)
|
|
|
|
type Environment interface {
|
|
State() *ethstate.State
|
|
|
|
Origin() []byte
|
|
BlockNumber() *big.Int
|
|
PrevHash() []byte
|
|
Coinbase() []byte
|
|
Time() int64
|
|
Difficulty() *big.Int
|
|
BlockHash() []byte
|
|
GasLimit() *big.Int
|
|
Transfer(from, to Account, amount *big.Int) error
|
|
}
|
|
|
|
type Object interface {
|
|
GetStorage(key *big.Int) *ethutil.Value
|
|
SetStorage(key *big.Int, value *ethutil.Value)
|
|
}
|
|
|
|
type Account interface {
|
|
SubBalance(amount *big.Int)
|
|
AddBalance(amount *big.Int)
|
|
Balance() *big.Int
|
|
}
|
|
|
|
// 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
|
|
}
|