hexo/node_modules/webpack/lib/DependenciesBlock.js

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2023-09-25 15:58:56 +08:00
/*
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("./serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("./serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("./util/Hash")} Hash */
/** @typedef {(d: Dependency) => boolean} DependencyFilterFunction */
/**
* DependenciesBlock is the base class for all Module classes in webpack. It describes a
* "block" of dependencies which are pointers to other DependenciesBlock instances. For example
* when a Module has a CommonJs require statement, the DependencyBlock for the CommonJs module
* would be added as a dependency to the Module. DependenciesBlock is inherited by two types of classes:
* Module subclasses and AsyncDependenciesBlock subclasses. The only difference between the two is that
* AsyncDependenciesBlock subclasses are used for code-splitting (async boundary) and Module subclasses are not.
*/
class DependenciesBlock {
constructor() {
/** @type {Dependency[]} */
this.dependencies = [];
/** @type {AsyncDependenciesBlock[]} */
this.blocks = [];
/** @type {DependenciesBlock | undefined} */
this.parent = undefined;
}
getRootBlock() {
/** @type {DependenciesBlock} */
let current = this;
while (current.parent) current = current.parent;
return current;
}
/**
* 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);
}
}
/**
* @param {ObjectSerializerContext} context context
*/
serialize({ write }) {
write(this.dependencies);
write(this.blocks);
}
/**
* @param {ObjectDeserializerContext} context context
*/
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;