ethpipe/config.go


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

package ethpipe

import (
    "github.com/ethereum/eth-go/ethstate"
    "github.com/ethereum/eth-go/ethutil"
)

var cnfCtr = ethutil.Hex2Bytes("661005d2720d855f1d9976f88bb10c1a3398c77f")

type object struct {
    *ethstate.StateObject
}

func (self object) StorageString(str string) *ethutil.Value {
    if ethutil.IsHex(str) {
        return self.Storage(ethutil.Hex2Bytes(str[2:]))
    } else {
        return self.Storage(ethutil.RightPadBytes([]byte(str), 32))
    }
}

func (self object) Storage(addr []byte) *ethutil.Value {
    return self.StateObject.GetStorage(ethutil.BigD(addr))
}

type config struct {
    pipe *Pipe
}

func (self *config) Get(name string) object {
    configCtrl := self.pipe.World().safeGet(cnfCtr)
    var addr []byte

    switch name {
    case "NameReg":
        addr = []byte{0}
    default:
        addr = ethutil.RightPadBytes([]byte(name), 32)
    }

    objectAddr := configCtrl.GetStorage(ethutil.BigD(addr))
    return object{self.pipe.World().safeGet(objectAddr.Bytes())}
}

func (self *config) Exist() bool {
    return self.pipe.World().Get(cnfCtr) != nil
}