git ssb

1
const Wasm = require('./wasmAgent')
2
3
module.exports = class Test extends Wasm {
4
  /**
5
   * Runs the core VM with a given environment and imports
6
   */
7
  async run (message, kernel, imports) {
8
    const responses = this.responses = {}
9
    /**
10
     * Builds a import map with an array of given interfaces
11
     */
12
    async function buildImports (kernelApi, kernel, imports) {
13
      const importMap = {}
14
      for (const Import of imports) {
15
        const response = responses[Import.name] = {}
16
        const newIterface = new Import(kernelApi, message, response)
17
        importMap[Import.name] = newIterface.exports
18
        // initailize the import
19
        await newIterface.initialize()
20
      }
21
      return importMap
22
    }
23
24
    let instance
25
    const interfaceApi = this.api = {
26
      /**
27
       * adds an aync operation to the operations queue
28
       */
29
      pushOpsQueue: (promise, callbackIndex, intefaceCallback) => {
30
        this._opsQueue = Promise.all([this._opsQueue, promise]).then(values => {
31
          const result = intefaceCallback(values.pop())
32
          instance.exports.callback.get(callbackIndex)(result)
33
        })
34
      },
35
      memory: () => {
36
        return instance.exports.memory.buffer
37
      },
38
      kernel: kernel
39
    }
40
41
    const initializedImports = await buildImports(interfaceApi, kernel, imports)
42
    this.instance = instance = WebAssembly.Instance(this._module, initializedImports)
43
44
    if (instance.exports.main) {
45
      instance.exports.main()
46
    }
47
    await this.onDone()
48
    return responses
49
  }
50
}
51