514 lines
12 KiB
JavaScript
514 lines
12 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const SortableSet = require("./util/SortableSet");
|
|
const compareLocations = require("./compareLocations");
|
|
|
|
/** @typedef {import("./Chunk")} Chunk */
|
|
/** @typedef {import("./Module")} Module */
|
|
/** @typedef {import("./ModuleReason")} ModuleReason */
|
|
|
|
/** @typedef {{module: Module, loc: TODO, request: string}} OriginRecord */
|
|
/** @typedef {string|{name: string}} ChunkGroupOptions */
|
|
|
|
let debugId = 5000;
|
|
|
|
/**
|
|
* @template T
|
|
* @param {SortableSet<T>} set set to convert to array.
|
|
* @returns {T[]} the array format of existing set
|
|
*/
|
|
const getArray = set => Array.from(set);
|
|
|
|
/**
|
|
* A convenience method used to sort chunks based on their id's
|
|
* @param {ChunkGroup} a first sorting comparator
|
|
* @param {ChunkGroup} b second sorting comparator
|
|
* @returns {1|0|-1} a sorting index to determine order
|
|
*/
|
|
const sortById = (a, b) => {
|
|
if (a.id < b.id) return -1;
|
|
if (b.id < a.id) return 1;
|
|
return 0;
|
|
};
|
|
|
|
/**
|
|
* @param {OriginRecord} a the first comparator in sort
|
|
* @param {OriginRecord} b the second comparator in sort
|
|
* @returns {1|-1|0} returns sorting order as index
|
|
*/
|
|
const sortOrigin = (a, b) => {
|
|
const aIdent = a.module ? a.module.identifier() : "";
|
|
const bIdent = b.module ? b.module.identifier() : "";
|
|
if (aIdent < bIdent) return -1;
|
|
if (aIdent > bIdent) return 1;
|
|
return compareLocations(a.loc, b.loc);
|
|
};
|
|
|
|
class ChunkGroup {
|
|
/**
|
|
* Creates an instance of ChunkGroup.
|
|
* @param {ChunkGroupOptions=} options chunk group options passed to chunkGroup
|
|
*/
|
|
constructor(options) {
|
|
if (typeof options === "string") {
|
|
options = { name: options };
|
|
} else if (!options) {
|
|
options = { name: undefined };
|
|
}
|
|
/** @type {number} */
|
|
this.groupDebugId = debugId++;
|
|
this.options = options;
|
|
/** @type {SortableSet<ChunkGroup>} */
|
|
this._children = new SortableSet(undefined, sortById);
|
|
this._parents = new SortableSet(undefined, sortById);
|
|
this._blocks = new SortableSet();
|
|
/** @type {Chunk[]} */
|
|
this.chunks = [];
|
|
/** @type {OriginRecord[]} */
|
|
this.origins = [];
|
|
/** Indices in top-down order */
|
|
/** @private @type {Map<Module, number>} */
|
|
this._moduleIndices = new Map();
|
|
/** Indices in bottom-up order */
|
|
/** @private @type {Map<Module, number>} */
|
|
this._moduleIndices2 = new Map();
|
|
}
|
|
|
|
/**
|
|
* when a new chunk is added to a chunkGroup, addingOptions will occur.
|
|
* @param {ChunkGroupOptions} options the chunkGroup options passed to addOptions
|
|
* @returns {void}
|
|
*/
|
|
addOptions(options) {
|
|
for (const key of Object.keys(options)) {
|
|
if (this.options[key] === undefined) {
|
|
this.options[key] = options[key];
|
|
} else if (this.options[key] !== options[key]) {
|
|
if (key.endsWith("Order")) {
|
|
this.options[key] = Math.max(this.options[key], options[key]);
|
|
} else {
|
|
throw new Error(
|
|
`ChunkGroup.addOptions: No option merge strategy for ${key}`
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* returns the name of current ChunkGroup
|
|
* @returns {string|undefined} returns the ChunkGroup name
|
|
*/
|
|
get name() {
|
|
return this.options.name;
|
|
}
|
|
|
|
/**
|
|
* sets a new name for current ChunkGroup
|
|
* @param {string} value the new name for ChunkGroup
|
|
* @returns {void}
|
|
*/
|
|
set name(value) {
|
|
this.options.name = value;
|
|
}
|
|
|
|
/**
|
|
* get a uniqueId for ChunkGroup, made up of its member Chunk debugId's
|
|
* @returns {string} a unique concatenation of chunk debugId's
|
|
*/
|
|
get debugId() {
|
|
return Array.from(this.chunks, x => x.debugId).join("+");
|
|
}
|
|
|
|
/**
|
|
* get a unique id for ChunkGroup, made up of its member Chunk id's
|
|
* @returns {string} a unique concatenation of chunk ids
|
|
*/
|
|
get id() {
|
|
return Array.from(this.chunks, x => x.id).join("+");
|
|
}
|
|
|
|
/**
|
|
* Performs an unshift of a specific chunk
|
|
* @param {Chunk} chunk chunk being unshifted
|
|
* @returns {boolean} returns true if attempted chunk shift is accepted
|
|
*/
|
|
unshiftChunk(chunk) {
|
|
const oldIdx = this.chunks.indexOf(chunk);
|
|
if (oldIdx > 0) {
|
|
this.chunks.splice(oldIdx, 1);
|
|
this.chunks.unshift(chunk);
|
|
} else if (oldIdx < 0) {
|
|
this.chunks.unshift(chunk);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* inserts a chunk before another existing chunk in group
|
|
* @param {Chunk} chunk Chunk being inserted
|
|
* @param {Chunk} before Placeholder/target chunk marking new chunk insertion point
|
|
* @returns {boolean} return true if insertion was successful
|
|
*/
|
|
insertChunk(chunk, before) {
|
|
const oldIdx = this.chunks.indexOf(chunk);
|
|
const idx = this.chunks.indexOf(before);
|
|
if (idx < 0) {
|
|
throw new Error("before chunk not found");
|
|
}
|
|
if (oldIdx >= 0 && oldIdx > idx) {
|
|
this.chunks.splice(oldIdx, 1);
|
|
this.chunks.splice(idx, 0, chunk);
|
|
} else if (oldIdx < 0) {
|
|
this.chunks.splice(idx, 0, chunk);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* add a chunk into ChunkGroup. Is pushed on or prepended
|
|
* @param {Chunk} chunk chunk being pushed into ChunkGroupS
|
|
* @returns {boolean} returns true if chunk addition was successful.
|
|
*/
|
|
pushChunk(chunk) {
|
|
const oldIdx = this.chunks.indexOf(chunk);
|
|
if (oldIdx >= 0) {
|
|
return false;
|
|
}
|
|
this.chunks.push(chunk);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param {Chunk} oldChunk chunk to be replaced
|
|
* @param {Chunk} newChunk New chunk that will be replaced with
|
|
* @returns {boolean} returns true if the replacement was successful
|
|
*/
|
|
replaceChunk(oldChunk, newChunk) {
|
|
const oldIdx = this.chunks.indexOf(oldChunk);
|
|
if (oldIdx < 0) return false;
|
|
const newIdx = this.chunks.indexOf(newChunk);
|
|
if (newIdx < 0) {
|
|
this.chunks[oldIdx] = newChunk;
|
|
return true;
|
|
}
|
|
if (newIdx < oldIdx) {
|
|
this.chunks.splice(oldIdx, 1);
|
|
return true;
|
|
} else if (newIdx !== oldIdx) {
|
|
this.chunks[oldIdx] = newChunk;
|
|
this.chunks.splice(newIdx, 1);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
removeChunk(chunk) {
|
|
const idx = this.chunks.indexOf(chunk);
|
|
if (idx >= 0) {
|
|
this.chunks.splice(idx, 1);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
isInitial() {
|
|
return false;
|
|
}
|
|
|
|
addChild(chunk) {
|
|
if (this._children.has(chunk)) {
|
|
return false;
|
|
}
|
|
this._children.add(chunk);
|
|
return true;
|
|
}
|
|
|
|
getChildren() {
|
|
return this._children.getFromCache(getArray);
|
|
}
|
|
|
|
getNumberOfChildren() {
|
|
return this._children.size;
|
|
}
|
|
|
|
get childrenIterable() {
|
|
return this._children;
|
|
}
|
|
|
|
removeChild(chunk) {
|
|
if (!this._children.has(chunk)) {
|
|
return false;
|
|
}
|
|
|
|
this._children.delete(chunk);
|
|
chunk.removeParent(this);
|
|
return true;
|
|
}
|
|
|
|
addParent(parentChunk) {
|
|
if (!this._parents.has(parentChunk)) {
|
|
this._parents.add(parentChunk);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
getParents() {
|
|
return this._parents.getFromCache(getArray);
|
|
}
|
|
|
|
setParents(newParents) {
|
|
this._parents.clear();
|
|
for (const p of newParents) {
|
|
this._parents.add(p);
|
|
}
|
|
}
|
|
|
|
getNumberOfParents() {
|
|
return this._parents.size;
|
|
}
|
|
|
|
hasParent(parent) {
|
|
return this._parents.has(parent);
|
|
}
|
|
|
|
get parentsIterable() {
|
|
return this._parents;
|
|
}
|
|
|
|
removeParent(chunk) {
|
|
if (this._parents.delete(chunk)) {
|
|
chunk.removeChunk(this);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @returns {Array} - an array containing the blocks
|
|
*/
|
|
getBlocks() {
|
|
return this._blocks.getFromCache(getArray);
|
|
}
|
|
|
|
getNumberOfBlocks() {
|
|
return this._blocks.size;
|
|
}
|
|
|
|
hasBlock(block) {
|
|
return this._blocks.has(block);
|
|
}
|
|
|
|
get blocksIterable() {
|
|
return this._blocks;
|
|
}
|
|
|
|
addBlock(block) {
|
|
if (!this._blocks.has(block)) {
|
|
this._blocks.add(block);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
addOrigin(module, loc, request) {
|
|
this.origins.push({
|
|
module,
|
|
loc,
|
|
request
|
|
});
|
|
}
|
|
|
|
containsModule(module) {
|
|
for (const chunk of this.chunks) {
|
|
if (chunk.containsModule(module)) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
getFiles() {
|
|
const files = new Set();
|
|
|
|
for (const chunk of this.chunks) {
|
|
for (const file of chunk.files) {
|
|
files.add(file);
|
|
}
|
|
}
|
|
|
|
return Array.from(files);
|
|
}
|
|
|
|
/**
|
|
* @param {string=} reason reason for removing ChunkGroup
|
|
* @returns {void}
|
|
*/
|
|
remove(reason) {
|
|
// cleanup parents
|
|
for (const parentChunkGroup of this._parents) {
|
|
// remove this chunk from its parents
|
|
parentChunkGroup._children.delete(this);
|
|
|
|
// cleanup "sub chunks"
|
|
for (const chunkGroup of this._children) {
|
|
/**
|
|
* remove this chunk as "intermediary" and connect
|
|
* it "sub chunks" and parents directly
|
|
*/
|
|
// add parent to each "sub chunk"
|
|
chunkGroup.addParent(parentChunkGroup);
|
|
// add "sub chunk" to parent
|
|
parentChunkGroup.addChild(chunkGroup);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* we need to iterate again over the children
|
|
* to remove this from the child's parents.
|
|
* This can not be done in the above loop
|
|
* as it is not guaranteed that `this._parents` contains anything.
|
|
*/
|
|
for (const chunkGroup of this._children) {
|
|
// remove this as parent of every "sub chunk"
|
|
chunkGroup._parents.delete(this);
|
|
}
|
|
|
|
// cleanup blocks
|
|
for (const block of this._blocks) {
|
|
block.chunkGroup = null;
|
|
}
|
|
|
|
// remove chunks
|
|
for (const chunk of this.chunks) {
|
|
chunk.removeGroup(this);
|
|
}
|
|
}
|
|
|
|
sortItems() {
|
|
this.origins.sort(sortOrigin);
|
|
this._parents.sort();
|
|
this._children.sort();
|
|
}
|
|
|
|
/**
|
|
* Sorting predicate which allows current ChunkGroup to be compared against another.
|
|
* Sorting values are based off of number of chunks in ChunkGroup.
|
|
*
|
|
* @param {ChunkGroup} otherGroup the chunkGroup to compare this against
|
|
* @returns {-1|0|1} sort position for comparison
|
|
*/
|
|
compareTo(otherGroup) {
|
|
if (this.chunks.length > otherGroup.chunks.length) return -1;
|
|
if (this.chunks.length < otherGroup.chunks.length) return 1;
|
|
const a = this.chunks[Symbol.iterator]();
|
|
const b = otherGroup.chunks[Symbol.iterator]();
|
|
// eslint-disable-next-line no-constant-condition
|
|
while (true) {
|
|
const aItem = a.next();
|
|
const bItem = b.next();
|
|
if (aItem.done) return 0;
|
|
const cmp = aItem.value.compareTo(bItem.value);
|
|
if (cmp !== 0) return cmp;
|
|
}
|
|
}
|
|
|
|
getChildrenByOrders() {
|
|
const lists = new Map();
|
|
for (const childGroup of this._children) {
|
|
// TODO webpack 5 remove this check for options
|
|
if (typeof childGroup.options === "object") {
|
|
for (const key of Object.keys(childGroup.options)) {
|
|
if (key.endsWith("Order")) {
|
|
const name = key.substr(0, key.length - "Order".length);
|
|
let list = lists.get(name);
|
|
if (list === undefined) {
|
|
lists.set(name, (list = []));
|
|
}
|
|
list.push({
|
|
order: childGroup.options[key],
|
|
group: childGroup
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
const result = Object.create(null);
|
|
for (const [name, list] of lists) {
|
|
list.sort((a, b) => {
|
|
const cmp = b.order - a.order;
|
|
if (cmp !== 0) return cmp;
|
|
// TODO webpack 5 remove this check of compareTo
|
|
if (a.group.compareTo) {
|
|
return a.group.compareTo(b.group);
|
|
}
|
|
return 0;
|
|
});
|
|
result[name] = list.map(i => i.group);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Sets the top-down index of a module in this ChunkGroup
|
|
* @param {Module} module module for which the index should be set
|
|
* @param {number} index the index of the module
|
|
* @returns {void}
|
|
*/
|
|
setModuleIndex(module, index) {
|
|
this._moduleIndices.set(module, index);
|
|
}
|
|
|
|
/**
|
|
* Gets the top-down index of a module in this ChunkGroup
|
|
* @param {Module} module the module
|
|
* @returns {number} index
|
|
*/
|
|
getModuleIndex(module) {
|
|
return this._moduleIndices.get(module);
|
|
}
|
|
|
|
/**
|
|
* Sets the bottom-up index of a module in this ChunkGroup
|
|
* @param {Module} module module for which the index should be set
|
|
* @param {number} index the index of the module
|
|
* @returns {void}
|
|
*/
|
|
setModuleIndex2(module, index) {
|
|
this._moduleIndices2.set(module, index);
|
|
}
|
|
|
|
/**
|
|
* Gets the bottom-up index of a module in this ChunkGroup
|
|
* @param {Module} module the module
|
|
* @returns {number} index
|
|
*/
|
|
getModuleIndex2(module) {
|
|
return this._moduleIndices2.get(module);
|
|
}
|
|
|
|
checkConstraints() {
|
|
const chunk = this;
|
|
for (const child of chunk._children) {
|
|
if (!child._parents.has(chunk)) {
|
|
throw new Error(
|
|
`checkConstraints: child missing parent ${chunk.debugId} -> ${child.debugId}`
|
|
);
|
|
}
|
|
}
|
|
for (const parentChunk of chunk._parents) {
|
|
if (!parentChunk._children.has(chunk)) {
|
|
throw new Error(
|
|
`checkConstraints: parent missing child ${parentChunk.debugId} <- ${chunk.debugId}`
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
module.exports = ChunkGroup;
|