/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const Generator = require("../Generator");
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const {
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JAVASCRIPT_TYPE,
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WEBASSEMBLY_TYPE
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} = require("../ModuleSourceTypeConstants");
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const { WEBASSEMBLY_MODULE_TYPE_SYNC } = require("../ModuleTypeConstants");
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const WebAssemblyExportImportedDependency = require("../dependencies/WebAssemblyExportImportedDependency");
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const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency");
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const { compareModulesByFullName } = require("../util/comparators");
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const memoize = require("../util/memoize");
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const WebAssemblyInInitialChunkError = require("./WebAssemblyInInitialChunkError");
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Module")} Module */
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const getWebAssemblyGenerator = memoize(() =>
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require("./WebAssemblyGenerator")
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);
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const getWebAssemblyJavascriptGenerator = memoize(() =>
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require("./WebAssemblyJavascriptGenerator")
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);
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const getWebAssemblyParser = memoize(() => require("./WebAssemblyParser"));
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const PLUGIN_NAME = "WebAssemblyModulesPlugin";
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/**
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* Options that influence how synchronous WebAssembly modules are transformed
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* and emitted.
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* @typedef {object} WebAssemblyModulesPluginOptions
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* @property {boolean=} mangleImports mangle imports
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*/
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/**
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* Adds parser, generator, manifest, and validation support for synchronous
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* WebAssembly modules in the compilation pipeline.
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*/
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class WebAssemblyModulesPlugin {
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/**
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* Stores options that affect generated synchronous WebAssembly output.
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* @param {WebAssemblyModulesPluginOptions} options options
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*/
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constructor(options) {
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this.options = options;
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}
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/**
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* Registers compilation hooks that parse and generate sync WebAssembly
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* modules, emit their binary assets, and report invalid placement in initial
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* chunks.
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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compiler.hooks.compilation.tap(
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PLUGIN_NAME,
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(compilation, { normalModuleFactory }) => {
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compilation.dependencyFactories.set(
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WebAssemblyImportDependency,
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normalModuleFactory
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);
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compilation.dependencyFactories.set(
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WebAssemblyExportImportedDependency,
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normalModuleFactory
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);
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normalModuleFactory.hooks.createParser
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.for(WEBASSEMBLY_MODULE_TYPE_SYNC)
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.tap(PLUGIN_NAME, () => {
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const WebAssemblyParser = getWebAssemblyParser();
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return new WebAssemblyParser();
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});
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normalModuleFactory.hooks.createGenerator
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.for(WEBASSEMBLY_MODULE_TYPE_SYNC)
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.tap(PLUGIN_NAME, () => {
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const WebAssemblyJavascriptGenerator =
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getWebAssemblyJavascriptGenerator();
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const WebAssemblyGenerator = getWebAssemblyGenerator();
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return Generator.byType({
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[JAVASCRIPT_TYPE]: new WebAssemblyJavascriptGenerator(),
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[WEBASSEMBLY_TYPE]: new WebAssemblyGenerator(this.options)
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});
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});
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compilation.hooks.renderManifest.tap(PLUGIN_NAME, (result, options) => {
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const { chunkGraph } = compilation;
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const { chunk, outputOptions, codeGenerationResults } = options;
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for (const module of chunkGraph.getOrderedChunkModulesIterable(
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chunk,
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compareModulesByFullName(compiler)
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)) {
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if (module.type === WEBASSEMBLY_MODULE_TYPE_SYNC) {
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const filenameTemplate = outputOptions.webassemblyModuleFilename;
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result.push({
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render: () =>
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codeGenerationResults.getSource(
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module,
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chunk.runtime,
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"webassembly"
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),
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filenameTemplate,
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pathOptions: {
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module,
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runtime: chunk.runtime,
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chunkGraph
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},
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auxiliary: true,
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identifier: `webassemblyModule${chunkGraph.getModuleId(
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module
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)}`,
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hash: chunkGraph.getModuleHash(module, chunk.runtime)
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});
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}
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}
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return result;
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});
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compilation.hooks.afterChunks.tap(PLUGIN_NAME, () => {
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const chunkGraph = compilation.chunkGraph;
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/** @type {Set<Module>} */
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const initialWasmModules = new Set();
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for (const chunk of compilation.chunks) {
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if (chunk.canBeInitial()) {
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for (const module of chunkGraph.getChunkModulesIterable(chunk)) {
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if (module.type === WEBASSEMBLY_MODULE_TYPE_SYNC) {
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initialWasmModules.add(module);
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}
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}
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}
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}
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for (const module of initialWasmModules) {
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compilation.errors.push(
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new WebAssemblyInInitialChunkError(
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module,
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compilation.moduleGraph,
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compilation.chunkGraph,
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compilation.requestShortener
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)
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);
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}
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});
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}
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);
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}
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}
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module.exports = WebAssemblyModulesPlugin;
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