1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
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
Storage map[common.Hash][]byte
}
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
}
|
