/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Ivan Kopeykin @vankop
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*/
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"use strict";
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const { cssExportConvention } = require("../util/conventions");
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const createHash = require("../util/createHash");
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const { makePathsRelative } = require("../util/identifier");
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const makeSerializable = require("../util/makeSerializable");
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const memoize = require("../util/memoize");
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const NullDependency = require("./NullDependency");
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/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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/** @typedef {import("../../declarations/WebpackOptions").CssGeneratorExportsConvention} CssGeneratorExportsConvention */
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/** @typedef {import("../../declarations/WebpackOptions").CssGeneratorLocalIdentName} CssGeneratorLocalIdentName */
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/** @typedef {import("../../declarations/WebpackOptions").HashFunction} HashFunction */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../CssModule")} CssModule */
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/** @typedef {import("../Dependency")} Dependency */
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/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
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/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
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/** @typedef {import("../DependencyTemplate").CssDependencyTemplateContext} DependencyTemplateContext */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../NormalModuleFactory").ResourceDataWithData} ResourceDataWithData */
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/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("../css/CssGenerator")} CssGenerator */
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/** @typedef {import("../css/CssParser").Range} Range */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
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/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
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/** @typedef {import("../util/Hash")} Hash */
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const getCssParser = memoize(() => require("../css/CssParser"));
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/**
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* @param {string} local css local
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* @param {CssModule} module module
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* @param {ChunkGraph} chunkGraph chunk graph
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* @param {RuntimeTemplate} runtimeTemplate runtime template
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* @returns {string} local ident
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*/
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const getLocalIdent = (local, module, chunkGraph, runtimeTemplate) => {
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const generator = /** @type {CssGenerator} */ (module.generator);
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const localIdentName =
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/** @type {CssGeneratorLocalIdentName} */
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(generator.localIdentName);
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const relativeResourcePath = makePathsRelative(
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/** @type {string} */
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(module.context),
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module.matchResource || module.resource,
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runtimeTemplate.compilation.compiler.root
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);
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const { hashFunction, hashDigest, hashDigestLength, hashSalt, uniqueName } =
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runtimeTemplate.outputOptions;
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const hash = createHash(/** @type {HashFunction} */ (hashFunction));
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if (hashSalt) {
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hash.update(hashSalt);
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}
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hash.update(relativeResourcePath);
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if (!/\[local\]/.test(localIdentName)) {
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hash.update(local);
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}
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const localIdentHash =
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/** @type {string} */
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(hash.digest(hashDigest)).slice(0, hashDigestLength);
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return runtimeTemplate.compilation
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.getPath(localIdentName, {
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filename: relativeResourcePath,
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hash: localIdentHash,
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contentHash: localIdentHash,
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chunkGraph,
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module
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})
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.replace(/\[local\]/g, local)
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.replace(/\[uniqueName\]/g, /** @type {string} */ (uniqueName))
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.replace(/^((-?[0-9])|--)/, "_$1");
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};
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class CssLocalIdentifierDependency extends NullDependency {
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/**
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* @param {string} name name
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* @param {Range} range range
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* @param {string=} prefix prefix
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*/
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constructor(name, range, prefix = "") {
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super();
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this.name = name;
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this.range = range;
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this.prefix = prefix;
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this._conventionNames = undefined;
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this._hashUpdate = undefined;
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}
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get type() {
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return "css local identifier";
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}
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/**
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* @param {string} name export name
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* @param {CssGeneratorExportsConvention} convention convention of the export name
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* @returns {string[]} convention results
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*/
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getExportsConventionNames(name, convention) {
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if (this._conventionNames) {
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return this._conventionNames;
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}
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this._conventionNames = cssExportConvention(this.name, convention);
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return this._conventionNames;
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}
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/**
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* Returns the exported names
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* @param {ModuleGraph} moduleGraph module graph
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* @returns {ExportsSpec | undefined} export names
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*/
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getExports(moduleGraph) {
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const module = /** @type {CssModule} */ (moduleGraph.getParentModule(this));
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const generator = /** @type {CssGenerator} */ (module.generator);
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const names = this.getExportsConventionNames(
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this.name,
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/** @type {CssGeneratorExportsConvention} */ (generator.convention)
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);
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return {
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exports: names.map(name => ({
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name,
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canMangle: true
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})),
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dependencies: undefined
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};
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}
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/**
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* Update the hash
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* @param {Hash} hash hash to be updated
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* @param {UpdateHashContext} context context
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* @returns {void}
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*/
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updateHash(hash, { chunkGraph }) {
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if (this._hashUpdate === undefined) {
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const module =
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/** @type {CssModule} */
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(chunkGraph.moduleGraph.getParentModule(this));
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const generator = /** @type {CssGenerator} */ (module.generator);
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const names = this.getExportsConventionNames(
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this.name,
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/** @type {CssGeneratorExportsConvention} */
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(generator.convention)
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);
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this._hashUpdate = `exportsConvention|${JSON.stringify(names)}|localIdentName|${JSON.stringify(generator.localIdentName)}`;
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}
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hash.update(this._hashUpdate);
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}
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/**
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* @param {ObjectSerializerContext} context context
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*/
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serialize(context) {
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const { write } = context;
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write(this.name);
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write(this.range);
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write(this.prefix);
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super.serialize(context);
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}
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/**
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* @param {ObjectDeserializerContext} context context
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*/
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deserialize(context) {
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const { read } = context;
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this.name = read();
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this.range = read();
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this.prefix = read();
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super.deserialize(context);
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}
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}
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CssLocalIdentifierDependency.Template = class CssLocalIdentifierDependencyTemplate extends (
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NullDependency.Template
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) {
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {string} local local name
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* @param {DependencyTemplateContext} templateContext the context object
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* @returns {string} identifier
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*/
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static getIdentifier(
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dependency,
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local,
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{ module: m, chunkGraph, runtimeTemplate }
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) {
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const dep = /** @type {CssLocalIdentifierDependency} */ (dependency);
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const module = /** @type {CssModule} */ (m);
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return (
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dep.prefix +
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getCssParser().escapeIdentifier(
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getLocalIdent(local, module, chunkGraph, runtimeTemplate)
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)
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);
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}
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {ReplaceSource} source the current replace source which can be modified
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* @param {DependencyTemplateContext} templateContext the context object
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* @returns {void}
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*/
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apply(dependency, source, templateContext) {
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const { module: m, moduleGraph, runtime, cssData } = templateContext;
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const dep = /** @type {CssLocalIdentifierDependency} */ (dependency);
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const module = /** @type {CssModule} */ (m);
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const generator = /** @type {CssGenerator} */ (module.generator);
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const names = dep.getExportsConventionNames(
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dep.name,
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/** @type {CssGeneratorExportsConvention} */
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(generator.convention)
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);
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const usedNames =
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/** @type {(string)[]} */
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(
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names
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.map(name =>
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moduleGraph.getExportInfo(module, name).getUsedName(name, runtime)
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)
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.filter(Boolean)
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);
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const local = usedNames.length === 0 ? names[0] : usedNames[0];
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const identifier = CssLocalIdentifierDependencyTemplate.getIdentifier(
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dep,
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local,
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templateContext
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);
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source.replace(dep.range[0], dep.range[1] - 1, identifier);
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for (const used of usedNames.concat(names)) {
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cssData.exports.set(used, getCssParser().unescapeIdentifier(identifier));
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}
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}
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};
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makeSerializable(
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CssLocalIdentifierDependency,
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"webpack/lib/dependencies/CssLocalIdentifierDependency"
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);
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module.exports = CssLocalIdentifierDependency;
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