mirror of https://github.com/webpack/webpack.git
484 lines
12 KiB
JavaScript
484 lines
12 KiB
JavaScript
/*
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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 asyncLib = require("neo-async");
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const {
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Tapable,
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AsyncSeriesWaterfallHook,
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SyncWaterfallHook,
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SyncBailHook,
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SyncHook,
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HookMap
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} = require("tapable");
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const NormalModule = require("./NormalModule");
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const RawModule = require("./RawModule");
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const RuleSet = require("./RuleSet");
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const cachedMerge = require("./util/cachedMerge");
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const EMPTY_RESOLVE_OPTIONS = {};
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const loaderToIdent = data => {
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if (!data.options) return data.loader;
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if (typeof data.options === "string") return data.loader + "?" + data.options;
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if (typeof data.options !== "object")
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throw new Error("loader options must be string or object");
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if (data.ident) return data.loader + "??" + data.ident;
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return data.loader + "?" + JSON.stringify(data.options);
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};
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const identToLoaderRequest = resultString => {
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const idx = resultString.indexOf("?");
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if (idx >= 0) {
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const loader = resultString.substr(0, idx);
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const options = resultString.substr(idx + 1);
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return {
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loader,
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options
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};
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} else {
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return {
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loader: resultString,
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options: undefined
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};
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}
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};
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const dependencyCache = new WeakMap();
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class NormalModuleFactory extends Tapable {
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constructor(context, resolverFactory, options) {
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super();
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this.hooks = {
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resolver: new SyncWaterfallHook(["resolver"]),
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factory: new SyncWaterfallHook(["factory"]),
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beforeResolve: new AsyncSeriesWaterfallHook(["data"]),
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afterResolve: new AsyncSeriesWaterfallHook(["data"]),
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createModule: new SyncBailHook(["data"]),
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module: new SyncWaterfallHook(["module", "data"]),
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createParser: new HookMap(() => new SyncBailHook(["parserOptions"])),
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parser: new HookMap(() => new SyncHook(["parser", "parserOptions"])),
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createGenerator: new HookMap(
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() => new SyncBailHook(["generatorOptions"])
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),
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generator: new HookMap(
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() => new SyncHook(["generator", "generatorOptions"])
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)
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};
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this._pluginCompat.tap("NormalModuleFactory", options => {
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switch (options.name) {
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case "before-resolve":
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case "after-resolve":
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options.async = true;
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break;
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case "parser":
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this.hooks.parser
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.for("javascript/auto")
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.tap(options.fn.name || "unnamed compat plugin", options.fn);
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return true;
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}
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let match;
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match = /^parser (.+)$/.exec(options.name);
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if (match) {
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this.hooks.parser
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.for(match[1])
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.tap(
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options.fn.name || "unnamed compat plugin",
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options.fn.bind(this)
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);
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return true;
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}
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match = /^create-parser (.+)$/.exec(options.name);
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if (match) {
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this.hooks.createParser
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.for(match[1])
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.tap(
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options.fn.name || "unnamed compat plugin",
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options.fn.bind(this)
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);
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return true;
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}
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});
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this.resolverFactory = resolverFactory;
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this.ruleSet = new RuleSet(options.defaultRules.concat(options.rules));
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this.cachePredicate =
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typeof options.unsafeCache === "function"
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? options.unsafeCache
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: Boolean.bind(null, options.unsafeCache);
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this.context = context || "";
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this.parserCache = Object.create(null);
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this.generatorCache = Object.create(null);
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this.hooks.factory.tap("NormalModuleFactory", () => (result, callback) => {
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let resolver = this.hooks.resolver.call(null);
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// Ignored
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if (!resolver) return callback();
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resolver(result, (err, data) => {
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if (err) return callback(err);
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// Ignored
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if (!data) return callback();
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// direct module
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if (typeof data.source === "function") return callback(null, data);
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this.hooks.afterResolve.callAsync(data, (err, result) => {
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if (err) return callback(err);
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// Ignored
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if (!result) return callback();
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let createdModule = this.hooks.createModule.call(result);
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if (!createdModule) {
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if (!result.request) {
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return callback(new Error("Empty dependency (no request)"));
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}
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createdModule = new NormalModule(result);
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}
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createdModule = this.hooks.module.call(createdModule, result);
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return callback(null, createdModule);
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});
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});
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});
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this.hooks.resolver.tap("NormalModuleFactory", () => (data, callback) => {
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const contextInfo = data.contextInfo;
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const context = data.context;
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const request = data.request;
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const noPreAutoLoaders = request.startsWith("-!");
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const noAutoLoaders = noPreAutoLoaders || request.startsWith("!");
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const noPrePostAutoLoaders = request.startsWith("!!");
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let elements = request
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.replace(/^-?!+/, "")
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.replace(/!!+/g, "!")
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.split("!");
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let resource = elements.pop();
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elements = elements.map(identToLoaderRequest);
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const loaderResolver = this.getResolver("loader");
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const normalResolver = this.getResolver("normal", data.resolveOptions);
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asyncLib.parallel(
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[
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callback =>
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this.resolveRequestArray(
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contextInfo,
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context,
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elements,
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loaderResolver,
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callback
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),
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callback => {
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if (resource === "" || resource[0] === "?") {
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return callback(null, {
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resource
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});
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}
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normalResolver.resolve(
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contextInfo,
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context,
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resource,
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{},
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(err, resource, resourceResolveData) => {
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if (err) return callback(err);
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callback(null, {
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resourceResolveData,
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resource
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});
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}
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);
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}
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],
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(err, results) => {
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if (err) return callback(err);
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let loaders = results[0];
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const resourceResolveData = results[1].resourceResolveData;
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resource = results[1].resource;
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// translate option idents
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try {
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for (const item of loaders) {
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if (typeof item.options === "string" && item.options[0] === "?") {
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const ident = item.options.substr(1);
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item.options = this.ruleSet.findOptionsByIdent(ident);
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item.ident = ident;
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}
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}
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} catch (e) {
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return callback(e);
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}
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if (resource === false) {
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// ignored
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return callback(
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null,
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new RawModule(
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"/* (ignored) */",
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`ignored ${context} ${request}`,
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`${request} (ignored)`
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)
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);
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}
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const userRequest = loaders
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.map(loaderToIdent)
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.concat([resource])
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.join("!");
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let resourcePath = resource;
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let resourceQuery = "";
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const queryIndex = resourcePath.indexOf("?");
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if (queryIndex >= 0) {
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resourceQuery = resourcePath.substr(queryIndex);
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resourcePath = resourcePath.substr(0, queryIndex);
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}
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const result = this.ruleSet.exec({
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resource: resourcePath,
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resourceQuery,
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issuer: contextInfo.issuer,
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compiler: contextInfo.compiler
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});
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const settings = {};
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const useLoadersPost = [];
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const useLoaders = [];
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const useLoadersPre = [];
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for (const r of result) {
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if (r.type === "use") {
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if (r.enforce === "post" && !noPrePostAutoLoaders)
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useLoadersPost.push(r.value);
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else if (
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r.enforce === "pre" &&
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!noPreAutoLoaders &&
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!noPrePostAutoLoaders
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)
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useLoadersPre.push(r.value);
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else if (!r.enforce && !noAutoLoaders && !noPrePostAutoLoaders)
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useLoaders.push(r.value);
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} else if (
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typeof r.value === "object" &&
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r.value !== null &&
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typeof settings[r.type] === "object" &&
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settings[r.type] !== null
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) {
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settings[r.type] = cachedMerge(settings[r.type], r.value);
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} else {
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settings[r.type] = r.value;
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}
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}
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asyncLib.parallel(
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[
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this.resolveRequestArray.bind(
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this,
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contextInfo,
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this.context,
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useLoadersPost,
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loaderResolver
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),
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this.resolveRequestArray.bind(
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this,
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contextInfo,
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this.context,
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useLoaders,
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loaderResolver
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),
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this.resolveRequestArray.bind(
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this,
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contextInfo,
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this.context,
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useLoadersPre,
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loaderResolver
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)
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],
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(err, results) => {
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if (err) return callback(err);
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loaders = results[0].concat(loaders, results[1], results[2]);
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process.nextTick(() => {
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const type = settings.type;
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const resolveOptions = settings.resolve;
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callback(null, {
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context: context,
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request: loaders
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.map(loaderToIdent)
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.concat([resource])
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.join("!"),
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dependencies: data.dependencies,
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userRequest,
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rawRequest: request,
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loaders,
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resource,
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resourceResolveData,
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settings,
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type,
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parser: this.getParser(type, settings.parser),
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generator: this.getGenerator(type, settings.generator),
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resolveOptions
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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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create(data, callback) {
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const dependencies = data.dependencies;
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const cacheEntry = dependencyCache.get(dependencies[0]);
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if (cacheEntry) return callback(null, cacheEntry);
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const context = data.context || this.context;
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const resolveOptions = data.resolveOptions || EMPTY_RESOLVE_OPTIONS;
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const request = dependencies[0].request;
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const contextInfo = data.contextInfo || {};
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this.hooks.beforeResolve.callAsync(
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{
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contextInfo,
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resolveOptions,
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context,
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request,
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dependencies
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},
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(err, result) => {
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if (err) return callback(err);
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// Ignored
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if (!result) return callback();
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const factory = this.hooks.factory.call(null);
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// Ignored
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if (!factory) return callback();
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factory(result, (err, module) => {
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if (err) return callback(err);
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if (module && this.cachePredicate(module)) {
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for (const d of dependencies) {
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dependencyCache.set(d, module);
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}
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}
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callback(null, module);
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});
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}
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);
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}
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resolveRequestArray(contextInfo, context, array, resolver, callback) {
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if (array.length === 0) return callback(null, []);
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asyncLib.map(
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array,
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(item, callback) => {
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resolver.resolve(
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contextInfo,
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context,
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item.loader,
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{},
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(err, result) => {
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if (
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err &&
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/^[^/]*$/.test(item.loader) &&
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!/-loader$/.test(item.loader)
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) {
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return resolver.resolve(
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contextInfo,
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context,
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item.loader + "-loader",
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{},
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err2 => {
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if (!err2) {
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err.message =
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err.message +
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"\n" +
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"BREAKING CHANGE: It's no longer allowed to omit the '-loader' suffix when using loaders.\n" +
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` You need to specify '${
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item.loader
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}-loader' instead of '${item.loader}',\n` +
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" see https://webpack.js.org/guides/migrating/#automatic-loader-module-name-extension-removed";
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}
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callback(err);
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}
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);
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}
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if (err) return callback(err);
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const optionsOnly = item.options
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? {
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options: item.options
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}
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: undefined;
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return callback(
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null,
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Object.assign({}, item, identToLoaderRequest(result), optionsOnly)
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);
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}
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);
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},
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callback
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);
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}
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getParser(type, parserOptions) {
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let ident = type;
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if (parserOptions) {
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if (parserOptions.ident) ident = `${type}|${parserOptions.ident}`;
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else ident = JSON.stringify([type, parserOptions]);
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}
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if (ident in this.parserCache) {
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return this.parserCache[ident];
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}
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return (this.parserCache[ident] = this.createParser(type, parserOptions));
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}
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createParser(type, parserOptions = {}) {
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const parser = this.hooks.createParser.for(type).call(parserOptions);
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if (!parser) {
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throw new Error(`No parser registered for ${type}`);
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}
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this.hooks.parser.for(type).call(parser, parserOptions);
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return parser;
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}
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getGenerator(type, generatorOptions) {
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let ident = type;
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if (generatorOptions) {
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if (generatorOptions.ident) ident = `${type}|${generatorOptions.ident}`;
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else ident = JSON.stringify([type, generatorOptions]);
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}
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if (ident in this.generatorCache) {
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return this.generatorCache[ident];
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}
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return (this.generatorCache[ident] = this.createGenerator(
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type,
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generatorOptions
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));
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}
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createGenerator(type, generatorOptions = {}) {
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const generator = this.hooks.createGenerator
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.for(type)
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.call(generatorOptions);
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if (!generator) {
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throw new Error(`No generator registered for ${type}`);
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}
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this.hooks.generator.for(type).call(generator, generatorOptions);
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return generator;
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}
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getResolver(type, resolveOptions) {
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return this.resolverFactory.get(
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type,
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resolveOptions || EMPTY_RESOLVE_OPTIONS
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);
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}
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}
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module.exports = NormalModuleFactory;
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