Files: f8c9ead18a27b0962868bf70b4fa256cb3fb1606 / environment.js
2372 bytesRaw
1 | const Graph = require('generic-digraph') |
2 | const MAX_BAL_BYTES = require('./constants.js').MAX_BAL_BYTES |
3 | |
4 | module.exports = class Environment { |
5 | constructor (data) { |
6 | const defaults = { |
7 | // gas tank |
8 | gasCounter: 0, // TODO: gasCounter is only 53 bits |
9 | gas: 0, // The amount of gas this contract has |
10 | gasPrice: 0, |
11 | gasLimit: 0, // The gas limit for the block |
12 | // call infromation |
13 | address: new Uint8Array(20), |
14 | origin: new Uint8Array(20), |
15 | coinbase: new Uint8Array(20), |
16 | difficulty: new Uint8Array(20), |
17 | caller: new Uint8Array(20), |
18 | callValue: new Uint8Array(MAX_BAL_BYTES), |
19 | callData: new ArrayBuffer(), |
20 | // the ROM |
21 | code: new ArrayBuffer(), // the current running code |
22 | // output calls |
23 | logs: [], |
24 | suicideAddress: new ArrayBuffer(), |
25 | // more output calls |
26 | returnValue: new ArrayBuffer() |
27 | } |
28 | |
29 | this.state = new Graph() |
30 | |
31 | if (data) { |
32 | data = JSON.parse(data) |
33 | Object.assign(this, defaults, data) |
34 | } else { |
35 | data = {} |
36 | } |
37 | |
38 | if (data.accounts) { |
39 | this.accounts = new Graph() |
40 | const self = this |
41 | data.accounts.forEach((account) => { |
42 | self.accounts.set(new Uint8Array(account[0]).toString(), account[1]) |
43 | }) |
44 | } |
45 | |
46 | if (data.address) { |
47 | this.address = new Uint8Array(data.address) |
48 | } |
49 | |
50 | if (data.origin) { |
51 | this.origin = new Uint8Array(data.origin) |
52 | } |
53 | |
54 | if (data.caller) { |
55 | this.caller = new Uint8Array(data.caller) |
56 | } |
57 | |
58 | if (data.callValue) { |
59 | this.callValue = new Uint8Array(data.callValue) |
60 | } |
61 | |
62 | if (data.callData) { |
63 | this.callData = hexStr2arrayBuf(data.callData) |
64 | } |
65 | } |
66 | |
67 | getBalance (address) { |
68 | return this.accounts.getValue(address.toString()).balance |
69 | } |
70 | |
71 | getCode (address) { |
72 | // STUB |
73 | } |
74 | |
75 | getBlockHash (height) { |
76 | // STUB |
77 | } |
78 | |
79 | // kernal |
80 | create (code, value) { |
81 | // STUB |
82 | } |
83 | |
84 | call (gas, address, value, data) { |
85 | // STUB |
86 | return // result |
87 | } |
88 | |
89 | delegateCall (gas, address, data) { |
90 | // STUB |
91 | return // result |
92 | } |
93 | } |
94 | |
95 | function hexStr2arrayBuf (string) { |
96 | const ab = new ArrayBuffer(string.length / 2) |
97 | const view = new Uint8Array(ab) |
98 | string = [...string] |
99 | let temp = '' |
100 | string.forEach((el, i) => { |
101 | temp += el |
102 | if (i % 2) { |
103 | view[(i + 1) / 2 - 1] = parseInt(temp, 16) |
104 | temp = '' |
105 | } |
106 | }) |
107 | return ab |
108 | } |
109 |
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