375 lines
12 KiB
JavaScript
375 lines
12 KiB
JavaScript
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/*
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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 { pathToFileURL } = require("url");
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const AsyncDependenciesBlock = require("../AsyncDependenciesBlock");
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const CommentCompilationWarning = require("../CommentCompilationWarning");
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const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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const formatLocation = require("../formatLocation");
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const EnableChunkLoadingPlugin = require("../javascript/EnableChunkLoadingPlugin");
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const { equals } = require("../util/ArrayHelpers");
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const { contextify } = require("../util/identifier");
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const EnableWasmLoadingPlugin = require("../wasm/EnableWasmLoadingPlugin");
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const ConstDependency = require("./ConstDependency");
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const {
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harmonySpecifierTag
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} = require("./HarmonyImportDependencyParserPlugin");
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const WorkerDependency = require("./WorkerDependency");
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/** @typedef {import("estree").Expression} Expression */
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/** @typedef {import("estree").ObjectExpression} ObjectExpression */
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/** @typedef {import("estree").Pattern} Pattern */
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/** @typedef {import("estree").Property} Property */
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/** @typedef {import("estree").SpreadElement} SpreadElement */
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Entrypoint").EntryOptions} EntryOptions */
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/** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
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/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("./HarmonyImportDependencyParserPlugin").HarmonySettings} HarmonySettings */
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const getUrl = module => {
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return pathToFileURL(module.resource).toString();
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};
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const DEFAULT_SYNTAX = [
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"Worker",
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"SharedWorker",
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"navigator.serviceWorker.register()",
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"Worker from worker_threads"
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];
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class WorkerPlugin {
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constructor(chunkLoading, wasmLoading) {
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this._chunkLoading = chunkLoading;
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this._wasmLoading = wasmLoading;
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}
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/**
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* Apply the plugin
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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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if (this._chunkLoading) {
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new EnableChunkLoadingPlugin(this._chunkLoading).apply(compiler);
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}
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if (this._wasmLoading) {
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new EnableWasmLoadingPlugin(this._wasmLoading).apply(compiler);
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}
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const cachedContextify = contextify.bindContextCache(
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compiler.context,
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compiler.root
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);
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compiler.hooks.thisCompilation.tap(
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"WorkerPlugin",
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(compilation, { normalModuleFactory }) => {
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compilation.dependencyFactories.set(
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WorkerDependency,
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normalModuleFactory
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);
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compilation.dependencyTemplates.set(
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WorkerDependency,
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new WorkerDependency.Template()
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);
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/**
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* @param {JavascriptParser} parser the parser
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* @param {Expression} expr expression
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* @returns {[BasicEvaluatedExpression, [number, number]]} parsed
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*/
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const parseModuleUrl = (parser, expr) => {
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if (
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expr.type !== "NewExpression" ||
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expr.callee.type === "Super" ||
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expr.arguments.length !== 2
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)
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return;
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const [arg1, arg2] = expr.arguments;
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if (arg1.type === "SpreadElement") return;
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if (arg2.type === "SpreadElement") return;
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const callee = parser.evaluateExpression(expr.callee);
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if (!callee.isIdentifier() || callee.identifier !== "URL") return;
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const arg2Value = parser.evaluateExpression(arg2);
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if (
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!arg2Value.isString() ||
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!arg2Value.string.startsWith("file://") ||
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arg2Value.string !== getUrl(parser.state.module)
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) {
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return;
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}
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const arg1Value = parser.evaluateExpression(arg1);
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return [arg1Value, [arg1.range[0], arg2.range[1]]];
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};
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/**
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* @param {JavascriptParser} parser the parser
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* @param {ObjectExpression} expr expression
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* @returns {{ expressions: Record<string, Expression | Pattern>, otherElements: (Property | SpreadElement)[], values: Record<string, any>, spread: boolean, insertType: "comma" | "single", insertLocation: number }} parsed object
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*/
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const parseObjectExpression = (parser, expr) => {
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/** @type {Record<string, any>} */
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const values = {};
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/** @type {Record<string, Expression | Pattern>} */
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const expressions = {};
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/** @type {(Property | SpreadElement)[]} */
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const otherElements = [];
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let spread = false;
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for (const prop of expr.properties) {
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if (prop.type === "SpreadElement") {
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spread = true;
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} else if (
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prop.type === "Property" &&
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!prop.method &&
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!prop.computed &&
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prop.key.type === "Identifier"
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) {
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expressions[prop.key.name] = prop.value;
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if (!prop.shorthand && !prop.value.type.endsWith("Pattern")) {
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const value = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (value.isCompileTimeValue())
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values[prop.key.name] = value.asCompileTimeValue();
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}
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} else {
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otherElements.push(prop);
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}
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}
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const insertType = expr.properties.length > 0 ? "comma" : "single";
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const insertLocation =
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expr.properties[expr.properties.length - 1].range[1];
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return {
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expressions,
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otherElements,
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values,
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spread,
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insertType,
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insertLocation
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};
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};
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/**
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* @param {JavascriptParser} parser the parser
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* @param {object} parserOptions options
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*/
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const parserPlugin = (parser, parserOptions) => {
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if (parserOptions.worker === false) return;
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const options = !Array.isArray(parserOptions.worker)
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? ["..."]
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: parserOptions.worker;
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const handleNewWorker = expr => {
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if (expr.arguments.length === 0 || expr.arguments.length > 2)
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return;
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const [arg1, arg2] = expr.arguments;
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if (arg1.type === "SpreadElement") return;
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if (arg2 && arg2.type === "SpreadElement") return;
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const parsedUrl = parseModuleUrl(parser, arg1);
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if (!parsedUrl) return;
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const [url, range] = parsedUrl;
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if (!url.isString()) return;
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const {
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expressions,
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otherElements,
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values: options,
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spread: hasSpreadInOptions,
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insertType,
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insertLocation
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} =
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arg2 && arg2.type === "ObjectExpression"
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? parseObjectExpression(parser, arg2)
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: {
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expressions: {},
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otherElements: [],
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values: {},
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spread: false,
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insertType: arg2 ? "spread" : "argument",
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insertLocation: arg2 ? arg2.range : arg1.range[1]
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};
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const {
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options: importOptions,
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errors: commentErrors
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} = parser.parseCommentOptions(expr.range);
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if (commentErrors) {
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for (const e of commentErrors) {
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const { comment } = e;
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parser.state.module.addWarning(
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new CommentCompilationWarning(
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`Compilation error while processing magic comment(-s): /*${comment.value}*/: ${e.message}`,
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comment.loc
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)
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);
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}
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}
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/** @type {EntryOptions} */
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let entryOptions = {};
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if (importOptions) {
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if (importOptions.webpackIgnore !== undefined) {
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if (typeof importOptions.webpackIgnore !== "boolean") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackIgnore\` expected a boolean, but received: ${importOptions.webpackIgnore}.`,
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expr.loc
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)
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);
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} else {
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if (importOptions.webpackIgnore) {
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return false;
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}
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}
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}
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if (importOptions.webpackEntryOptions !== undefined) {
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if (
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typeof importOptions.webpackEntryOptions !== "object" ||
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importOptions.webpackEntryOptions === null
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) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackEntryOptions\` expected a object, but received: ${importOptions.webpackEntryOptions}.`,
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expr.loc
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)
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);
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} else {
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Object.assign(
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entryOptions,
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importOptions.webpackEntryOptions
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);
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}
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}
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if (importOptions.webpackChunkName !== undefined) {
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if (typeof importOptions.webpackChunkName !== "string") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`,
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expr.loc
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)
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);
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} else {
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entryOptions.name = importOptions.webpackChunkName;
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}
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}
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}
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if (
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!Object.prototype.hasOwnProperty.call(entryOptions, "name") &&
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options &&
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typeof options.name === "string"
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) {
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entryOptions.name = options.name;
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}
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if (!entryOptions.runtime) {
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entryOptions.runtime = `${cachedContextify(
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parser.state.module.identifier()
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)}|${formatLocation(expr.loc)}`;
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}
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const block = new AsyncDependenciesBlock({
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name: entryOptions.name,
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entryOptions: {
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chunkLoading: this._chunkLoading,
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wasmLoading: this._wasmLoading,
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...entryOptions
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}
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});
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block.loc = expr.loc;
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const dep = new WorkerDependency(url.string, range);
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dep.loc = expr.loc;
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block.addDependency(dep);
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parser.state.module.addBlock(block);
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parser.walkExpression(expr.callee);
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if (expressions.type) {
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const expr = expressions.type;
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if (options.type !== false) {
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const dep = new ConstDependency("undefined", expr.range);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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expressions.type = undefined;
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}
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} else if (hasSpreadInOptions && insertType === "comma") {
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const dep = new ConstDependency(
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",type: undefined",
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insertLocation
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);
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dep.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep);
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} else if (insertType === "spread") {
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const dep1 = new ConstDependency(
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"Object.assign({}, ",
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insertLocation[0]
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);
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const dep2 = new ConstDependency(
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", { type: undefined })",
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insertLocation[1]
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);
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dep1.loc = expr.loc;
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dep2.loc = expr.loc;
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parser.state.module.addPresentationalDependency(dep1);
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parser.state.module.addPresentationalDependency(dep2);
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}
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for (const key of Object.keys(expressions)) {
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if (expressions[key]) parser.walkExpression(expressions[key]);
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}
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for (const prop of otherElements) {
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parser.walkProperty(prop);
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}
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if (insertType === "spread") {
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parser.walkExpression(arg2);
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}
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return true;
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};
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const processItem = item => {
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if (item.endsWith("()")) {
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parser.hooks.call
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.for(item.slice(0, -2))
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.tap("WorkerPlugin", handleNewWorker);
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} else {
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const match = /^(.+?)(\(\))?\s+from\s+(.+)$/.exec(item);
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if (match) {
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const ids = match[1].split(".");
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const call = match[2];
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const source = match[3];
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(call ? parser.hooks.call : parser.hooks.new)
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.for(harmonySpecifierTag)
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.tap("WorkerPlugin", expr => {
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const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
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if (
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!settings ||
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settings.source !== source ||
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!equals(settings.ids, ids)
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) {
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return;
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}
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return handleNewWorker(expr);
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});
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} else {
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parser.hooks.new.for(item).tap("WorkerPlugin", handleNewWorker);
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}
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}
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};
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for (const item of options) {
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if (item === "...") {
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DEFAULT_SYNTAX.forEach(processItem);
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} else processItem(item);
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}
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};
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normalModuleFactory.hooks.parser
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.for("javascript/auto")
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.tap("WorkerPlugin", parserPlugin);
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normalModuleFactory.hooks.parser
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.for("javascript/esm")
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.tap("WorkerPlugin", parserPlugin);
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}
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);
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}
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}
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module.exports = WorkerPlugin;
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