79 lines
2.3 KiB
JavaScript
79 lines
2.3 KiB
JavaScript
|
/*
|
||
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
||
|
|
Author Tobias Koppers @sokra
|
||
|
|
*/
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
const RuntimeGlobals = require("../RuntimeGlobals");
|
||
|
|
const RuntimeModule = require("../RuntimeModule");
|
||
|
|
const Template = require("../Template");
|
||
|
|
|
||
|
|
class AsyncWasmLoadingRuntimeModule extends RuntimeModule {
|
||
|
|
constructor({ generateLoadBinaryCode, supportsStreaming }) {
|
||
|
|
super("wasm loading", RuntimeModule.STAGE_NORMAL);
|
||
|
|
this.generateLoadBinaryCode = generateLoadBinaryCode;
|
||
|
|
this.supportsStreaming = supportsStreaming;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @returns {string} runtime code
|
||
|
|
*/
|
||
|
|
generate() {
|
||
|
|
const { compilation, chunk } = this;
|
||
|
|
const { outputOptions, runtimeTemplate } = compilation;
|
||
|
|
const fn = RuntimeGlobals.instantiateWasm;
|
||
|
|
const wasmModuleSrcPath = compilation.getPath(
|
||
|
|
JSON.stringify(outputOptions.webassemblyModuleFilename),
|
||
|
|
{
|
||
|
|
hash: `" + ${RuntimeGlobals.getFullHash}() + "`,
|
||
|
|
hashWithLength: length =>
|
||
|
|
`" + ${RuntimeGlobals.getFullHash}}().slice(0, ${length}) + "`,
|
||
|
|
module: {
|
||
|
|
id: '" + wasmModuleId + "',
|
||
|
|
hash: `" + wasmModuleHash + "`,
|
||
|
|
hashWithLength(length) {
|
||
|
|
return `" + wasmModuleHash.slice(0, ${length}) + "`;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
runtime: chunk.runtime
|
||
|
|
}
|
||
|
|
);
|
||
|
|
return `${fn} = ${runtimeTemplate.basicFunction(
|
||
|
|
"exports, wasmModuleId, wasmModuleHash, importsObj",
|
||
|
|
[
|
||
|
|
`var req = ${this.generateLoadBinaryCode(wasmModuleSrcPath)};`,
|
||
|
|
this.supportsStreaming
|
||
|
|
? Template.asString([
|
||
|
|
"if (typeof WebAssembly.instantiateStreaming === 'function') {",
|
||
|
|
Template.indent([
|
||
|
|
"return WebAssembly.instantiateStreaming(req, importsObj)",
|
||
|
|
Template.indent([
|
||
|
|
`.then(${runtimeTemplate.returningFunction(
|
||
|
|
"Object.assign(exports, res.instance.exports)",
|
||
|
|
"res"
|
||
|
|
)});`
|
||
|
|
])
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
])
|
||
|
|
: "// no support for streaming compilation",
|
||
|
|
"return req",
|
||
|
|
Template.indent([
|
||
|
|
`.then(${runtimeTemplate.returningFunction("x.arrayBuffer()", "x")})`,
|
||
|
|
`.then(${runtimeTemplate.returningFunction(
|
||
|
|
"WebAssembly.instantiate(bytes, importsObj)",
|
||
|
|
"bytes"
|
||
|
|
)})`,
|
||
|
|
`.then(${runtimeTemplate.returningFunction(
|
||
|
|
"Object.assign(exports, res.instance.exports)",
|
||
|
|
"res"
|
||
|
|
)});`
|
||
|
|
])
|
||
|
|
]
|
||
|
|
)};`;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = AsyncWasmLoadingRuntimeModule;
|