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109 lines
3.1 KiB
109 lines
3.1 KiB
3 years ago
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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 makeSerializable = require("../util/makeSerializable");
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const NullDependency = require("./NullDependency");
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/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../Dependency")} Dependency */
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/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
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/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../ModuleGraphConnection").ConnectionState} ConnectionState */
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/** @typedef {import("../util/Hash")} Hash */
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class ConstDependency extends NullDependency {
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/**
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* @param {string} expression the expression
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* @param {number|[number, number]} range the source range
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* @param {string[]=} runtimeRequirements runtime requirements
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*/
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constructor(expression, range, runtimeRequirements) {
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super();
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this.expression = expression;
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this.range = range;
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this.runtimeRequirements = runtimeRequirements
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? new Set(runtimeRequirements)
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: null;
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this._hashUpdate = undefined;
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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, context) {
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if (this._hashUpdate === undefined) {
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let hashUpdate = "" + this.range + "|" + this.expression;
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if (this.runtimeRequirements) {
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for (const item of this.runtimeRequirements) {
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hashUpdate += "|";
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hashUpdate += item;
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}
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}
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this._hashUpdate = hashUpdate;
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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 {ModuleGraph} moduleGraph the module graph
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* @returns {ConnectionState} how this dependency connects the module to referencing modules
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*/
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getModuleEvaluationSideEffectsState(moduleGraph) {
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return false;
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}
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serialize(context) {
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const { write } = context;
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write(this.expression);
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write(this.range);
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write(this.runtimeRequirements);
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super.serialize(context);
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}
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deserialize(context) {
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const { read } = context;
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this.expression = read();
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this.range = read();
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this.runtimeRequirements = read();
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super.deserialize(context);
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}
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}
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makeSerializable(ConstDependency, "webpack/lib/dependencies/ConstDependency");
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ConstDependency.Template = class ConstDependencyTemplate 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 {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 dep = /** @type {ConstDependency} */ (dependency);
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if (dep.runtimeRequirements) {
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for (const req of dep.runtimeRequirements) {
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templateContext.runtimeRequirements.add(req);
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}
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}
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if (typeof dep.range === "number") {
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source.insert(dep.range, dep.expression);
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return;
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}
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source.replace(dep.range[0], dep.range[1] - 1, dep.expression);
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}
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};
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module.exports = ConstDependency;
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