mirror of https://github.com/webpack/webpack.git
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 Tobias Koppers @sokra
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*/
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"use strict";
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const DependenciesBlockVariable = require("./DependenciesBlockVariable");
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/**
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* @typedef {import("./ChunkGroup")} ChunkGroup
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* @typedef {import("./Dependency")} Dependency
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* @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock
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* @typedef {import("./DependenciesBlockVariable")} DependenciesBlockVariable
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* @typedef {(d: Dependency) => boolean} DependencyFilterFunction
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* @typedef {import("crypto").Hash} Hash
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*/
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class DependenciesBlock {
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constructor() {
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/** @type {Dependency[]} */
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this.dependencies = [];
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/** @type {AsyncDependenciesBlock[]} */
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this.blocks = [];
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/** @type {DependenciesBlockVariable[]} */
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this.variables = [];
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// TODO remove this line, it's wrong
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/** @type {ChunkGroup=} */
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this.chunkGroup = undefined;
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}
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/**
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* Adds a DependencyBlock to DependencyBlock relationship.
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* This is used for when a Module has a AsyncDependencyBlock tie (for code-splitting)
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*
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* @param {AsyncDependenciesBlock} block block being added
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* @returns {void}
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*/
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addBlock(block) {
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this.blocks.push(block);
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block.parent = this;
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}
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/**
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* @param {string} name name of dependency
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* @param {string} expression expression string for variable
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* @param {Dependency[]} dependencies dependency instances tied to variable
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* @returns {void}
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*/
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addVariable(name, expression, dependencies) {
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for (let v of this.variables) {
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if (v.name === name && v.expression === expression) {
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return;
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}
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}
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this.variables.push(
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new DependenciesBlockVariable(name, expression, dependencies)
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);
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}
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/**
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* @param {Dependency} dependency dependency being tied to block.
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* This is an "edge" pointing to another "node" on module graph.
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* @returns {void}
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*/
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addDependency(dependency) {
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this.dependencies.push(dependency);
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}
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/**
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* @param {Dependency} dependency dependency being removed
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* @returns {void}
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*/
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removeDependency(dependency) {
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const idx = this.dependencies.indexOf(dependency);
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if (idx >= 0) this.dependencies.splice(idx, 1);
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}
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/**
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* @param {Hash} hash the hash used to track dependencies, from "crypto" module
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* @returns {void}
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*/
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updateHash(hash) {
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for (const dep of this.dependencies) dep.updateHash(hash);
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for (const block of this.blocks) block.updateHash(hash);
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for (const variable of this.variables) variable.updateHash(hash);
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}
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disconnect() {
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for (const dep of this.dependencies) dep.disconnect();
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for (const block of this.blocks) block.disconnect();
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for (const variable of this.variables) variable.disconnect();
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}
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unseal() {
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for (const block of this.blocks) block.unseal();
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}
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/**
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* @param {DependencyFilterFunction} filter filter function for dependencies, gets passed all dependency ties from current instance
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* @returns {boolean} returns boolean for filter
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*/
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hasDependencies(filter) {
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if (filter) {
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for (const dep of this.dependencies) {
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if (filter(dep)) return true;
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}
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} else {
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if (this.dependencies.length > 0) {
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return true;
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}
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}
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for (const block of this.blocks) {
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if (block.hasDependencies(filter)) return true;
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}
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for (const variable of this.variables) {
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if (variable.hasDependencies(filter)) return true;
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}
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return false;
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}
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sortItems() {
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for (const block of this.blocks) block.sortItems();
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}
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}
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module.exports = DependenciesBlock;
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