Files: ccd5cf6291ba56bba5cd804c94c57da6b7801c40 / index.js
2370 bytesRaw
1 | /** |
2 | * This implements the Ethereum Kernel |
3 | * Kernels must implement two methods `codeHandler` and `callHandler` (and `linkHandler` for sharding) |
4 | * The Kernel Contract handles the following |
5 | * - Interprocess communications |
6 | * - Intializing the VM and exposes ROM to it (codeHandler) |
7 | * - Expose namespace which VM instance exists and Intializes the Environment (callHandler) |
8 | * - Provides some built in contract (runTx, runBlock) |
9 | * - Provides resource sharing and limiting via gas |
10 | * |
11 | * All State should be stored in the Environment. |
12 | * |
13 | */ |
14 | |
15 | // The Kernel Exposes this Interface to VM instances it makes |
16 | const Interface = require('./interface.js') |
17 | |
18 | // The Kernel Stores all of its state in the Environment. The Interface is used |
19 | // to by the VM to retrive infromation from the Environment. |
20 | const Environment = require('./environment.js') |
21 | |
22 | const DebugInterface = require('./debugInterface.js') |
23 | |
24 | module.exports = class Kernal { |
25 | // runs some code in the VM |
26 | constructor (environment = new Environment()) { |
27 | this.environment = environment |
28 | } |
29 | |
30 | // handles running code. |
31 | static codeHandler (code, ethInterface = new Interface(new Environment())) { |
32 | const debugInterface = new DebugInterface() |
33 | |
34 | const instance = Wasm.instantiateModule(code, { |
35 | 'ethereum': ethInterface.exportTable, |
36 | 'debug': debugInterface.exportTable |
37 | }) |
38 | |
39 | ethInterface.setModule(instance) |
40 | debugInterface.setModule(instance) |
41 | |
42 | if (instance.exports.main) { |
43 | instance.exports.main() |
44 | } |
45 | return instance |
46 | } |
47 | |
48 | // loads code from the merkle trie and delegates the message |
49 | // Detects if code is EVM or WASM |
50 | // Detects if the code injection is needed |
51 | // Detects if transcompilation is needed |
52 | static callHandler (path, data) { |
53 | // creats a new Kernel |
54 | // const environment = new Environment(data) |
55 | // environment.parent = this |
56 | // const kernel = new Kernel(this, environment) |
57 | // kernel.codeHandler(code) |
58 | } |
59 | |
60 | // run tx; the tx message handler |
61 | runTx (tx, environment = new Environment()) { |
62 | // verify tx then send to call Handler |
63 | this.callHandler(tx, environment) |
64 | } |
65 | |
66 | // run block; the block message handler |
67 | runBlock (block, environment = new Environment()) { |
68 | // verify block then run each tx |
69 | block.tx.forEach((tx) => { |
70 | this.runTx(tx, environment) |
71 | }) |
72 | } |
73 | |
74 | // run blockchain |
75 | // runBlockchain () {} |
76 | } |
77 |
Built with git-ssb-web