128 lines
3.4 KiB
JavaScript
128 lines
3.4 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Florent Cailhol @ooflorent
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*/
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"use strict";
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const DependencyTemplate = require("../DependencyTemplate");
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const InitFragment = require("../InitFragment");
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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("../DependencyTemplates")} DependencyTemplates */
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/** @typedef {import("../ModuleGraph")} ModuleGraph */
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/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("../javascript/JavascriptParser").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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class CachedConstDependency extends NullDependency {
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/**
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* @param {string} expression expression
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* @param {Range} range range
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* @param {string} identifier identifier
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*/
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constructor(expression, range, identifier) {
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super();
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this.expression = expression;
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this.range = range;
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this.identifier = identifier;
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this._hashUpdate = undefined;
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}
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/**
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* @returns {string} hash update
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*/
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_createHashUpdate() {
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return `${this.identifier}${this.range}${this.expression}`;
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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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this._hashUpdate = this._createHashUpdate();
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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.expression);
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write(this.range);
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write(this.identifier);
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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.expression = read();
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this.range = read();
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this.identifier = read();
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super.deserialize(context);
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}
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}
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makeSerializable(
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CachedConstDependency,
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"webpack/lib/dependencies/CachedConstDependency"
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);
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CachedConstDependency.Template = class CachedConstDependencyTemplate extends (
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DependencyTemplate
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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(
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dependency,
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source,
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{ runtimeTemplate, dependencyTemplates, initFragments }
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) {
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const dep = /** @type {CachedConstDependency} */ (dependency);
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initFragments.push(
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new InitFragment(
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`var ${dep.identifier} = ${dep.expression};\n`,
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InitFragment.STAGE_CONSTANTS,
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0,
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`const ${dep.identifier}`
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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.identifier);
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return;
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}
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source.replace(dep.range[0], dep.range[1] - 1, dep.identifier);
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}
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};
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module.exports = CachedConstDependency;
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