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DependenciesBlock.js
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Wed, Nov 6, 19:30

DependenciesBlock.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const makeSerializable = require("./util/makeSerializable");
/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./ChunkGroup")} ChunkGroup */
/** @typedef {import("./Dependency")} Dependency */
/** @typedef {import("./Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("./util/Hash")} Hash */
/** @typedef {(d: Dependency) => boolean} DependencyFilterFunction */
class DependenciesBlock {
constructor() {
/** @type {Dependency[]} */
this.dependencies = [];
/** @type {AsyncDependenciesBlock[]} */
this.blocks = [];
}
/**
* Adds a DependencyBlock to DependencyBlock relationship.
* This is used for when a Module has a AsyncDependencyBlock tie (for code-splitting)
*
* @param {AsyncDependenciesBlock} block block being added
* @returns {void}
*/
addBlock(block) {
this.blocks.push(block);
block.parent = this;
}
/**
* @param {Dependency} dependency dependency being tied to block.
* This is an "edge" pointing to another "node" on module graph.
* @returns {void}
*/
addDependency(dependency) {
this.dependencies.push(dependency);
}
/**
* @param {Dependency} dependency dependency being removed
* @returns {void}
*/
removeDependency(dependency) {
const idx = this.dependencies.indexOf(dependency);
if (idx >= 0) {
this.dependencies.splice(idx, 1);
}
}
/**
* Removes all dependencies and blocks
* @returns {void}
*/
clearDependenciesAndBlocks() {
this.dependencies.length = 0;
this.blocks.length = 0;
}
/**
* @param {Hash} hash the hash used to track dependencies
* @param {UpdateHashContext} context context
* @returns {void}
*/
updateHash(hash, context) {
for (const dep of this.dependencies) {
dep.updateHash(hash, context);
}
for (const block of this.blocks) {
block.updateHash(hash, context);
}
}
serialize({ write }) {
write(this.dependencies);
write(this.blocks);
}
deserialize({ read }) {
this.dependencies = read();
this.blocks = read();
for (const block of this.blocks) {
block.parent = this;
}
}
}
makeSerializable(DependenciesBlock, "webpack/lib/DependenciesBlock");
module.exports = DependenciesBlock;

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