404 lines
10 KiB
JavaScript
404 lines
10 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const RawSource = require("./RawSource");
|
|
const Source = require("./Source");
|
|
const { getMap, getSourceAndMap } = require("./helpers/getFromStreamChunks");
|
|
const streamChunks = require("./helpers/streamChunks");
|
|
|
|
/** @typedef {import("./CompatSource").SourceLike} SourceLike */
|
|
/** @typedef {import("./Source").HashLike} HashLike */
|
|
/** @typedef {import("./Source").MapOptions} MapOptions */
|
|
/** @typedef {import("./Source").RawSourceMap} RawSourceMap */
|
|
/** @typedef {import("./Source").SourceAndMap} SourceAndMap */
|
|
/** @typedef {import("./Source").SourceValue} SourceValue */
|
|
/** @typedef {import("./helpers/getGeneratedSourceInfo").GeneratedSourceInfo} GeneratedSourceInfo */
|
|
/** @typedef {import("./helpers/streamChunks").OnChunk} OnChunk */
|
|
/** @typedef {import("./helpers/streamChunks").OnName} OnName */
|
|
/** @typedef {import("./helpers/streamChunks").OnSource} OnSource */
|
|
/** @typedef {import("./helpers/streamChunks").Options} Options */
|
|
|
|
/** @typedef {string | Source | SourceLike} Child */
|
|
|
|
const stringsAsRawSources = new WeakSet();
|
|
|
|
class ConcatSource extends Source {
|
|
/**
|
|
*
|
|
* @param {Child[]} args children
|
|
*/
|
|
constructor(...args) {
|
|
super();
|
|
/**
|
|
* @private
|
|
* @type {Child[]}
|
|
*/
|
|
this._children = [];
|
|
|
|
for (let i = 0; i < args.length; i++) {
|
|
const item = args[i];
|
|
if (item instanceof ConcatSource) {
|
|
for (const child of item._children) {
|
|
this._children.push(child);
|
|
}
|
|
} else {
|
|
this._children.push(item);
|
|
}
|
|
}
|
|
|
|
this._isOptimized = args.length === 0;
|
|
}
|
|
|
|
/**
|
|
* @returns {Source[]} children
|
|
*/
|
|
getChildren() {
|
|
if (!this._isOptimized) this._optimize();
|
|
return /** @type {Source[]} */ (this._children);
|
|
}
|
|
|
|
/**
|
|
* @param {Child} item item
|
|
* @returns {void}
|
|
*/
|
|
add(item) {
|
|
if (item instanceof ConcatSource) {
|
|
for (const child of item._children) {
|
|
this._children.push(child);
|
|
}
|
|
} else {
|
|
this._children.push(item);
|
|
}
|
|
this._isOptimized = false;
|
|
}
|
|
|
|
/**
|
|
* @param {Child[]} items items
|
|
* @returns {void}
|
|
*/
|
|
addAllSkipOptimizing(items) {
|
|
for (const item of items) {
|
|
this._children.push(item);
|
|
}
|
|
}
|
|
|
|
buffer() {
|
|
if (!this._isOptimized) this._optimize();
|
|
/** @type {Buffer[]} */
|
|
const buffers = [];
|
|
for (const child of /** @type {SourceLike[]} */ (this._children)) {
|
|
if (typeof child.buffer === "function") {
|
|
buffers.push(child.buffer());
|
|
} else {
|
|
const bufferOrString = child.source();
|
|
if (Buffer.isBuffer(bufferOrString)) {
|
|
buffers.push(bufferOrString);
|
|
} else {
|
|
// This will not happen
|
|
buffers.push(Buffer.from(bufferOrString, "utf-8"));
|
|
}
|
|
}
|
|
}
|
|
return Buffer.concat(buffers);
|
|
}
|
|
|
|
/**
|
|
* @returns {SourceValue} source
|
|
*/
|
|
source() {
|
|
if (!this._isOptimized) this._optimize();
|
|
let source = "";
|
|
for (const child of this._children) {
|
|
source += /** @type {Source} */ (child).source();
|
|
}
|
|
return source;
|
|
}
|
|
|
|
size() {
|
|
if (!this._isOptimized) this._optimize();
|
|
let size = 0;
|
|
for (const child of this._children) {
|
|
size += /** @type {Source} */ (child).size();
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* @param {MapOptions=} options map options
|
|
* @returns {RawSourceMap | null} map
|
|
*/
|
|
map(options) {
|
|
return getMap(this, options);
|
|
}
|
|
|
|
/**
|
|
* @param {MapOptions=} options map options
|
|
* @returns {SourceAndMap} source and map
|
|
*/
|
|
sourceAndMap(options) {
|
|
return getSourceAndMap(this, options);
|
|
}
|
|
|
|
/**
|
|
* @param {Options} options options
|
|
* @param {OnChunk} onChunk called for each chunk of code
|
|
* @param {OnSource} onSource called for each source
|
|
* @param {OnName} onName called for each name
|
|
* @returns {GeneratedSourceInfo} generated source info
|
|
*/
|
|
streamChunks(options, onChunk, onSource, onName) {
|
|
if (!this._isOptimized) this._optimize();
|
|
if (this._children.length === 1) {
|
|
return /** @type {ConcatSource[]} */ (this._children)[0].streamChunks(
|
|
options,
|
|
onChunk,
|
|
onSource,
|
|
onName
|
|
);
|
|
}
|
|
let currentLineOffset = 0;
|
|
let currentColumnOffset = 0;
|
|
let sourceMapping = new Map();
|
|
let nameMapping = new Map();
|
|
const finalSource = !!(options && options.finalSource);
|
|
let code = "";
|
|
let needToCloseMapping = false;
|
|
for (const item of /** @type {Source[]} */ (this._children)) {
|
|
/** @type {number[]} */
|
|
const sourceIndexMapping = [];
|
|
/** @type {number[]} */
|
|
const nameIndexMapping = [];
|
|
let lastMappingLine = 0;
|
|
const { generatedLine, generatedColumn, source } = streamChunks(
|
|
item,
|
|
options,
|
|
// eslint-disable-next-line no-loop-func
|
|
(
|
|
chunk,
|
|
generatedLine,
|
|
generatedColumn,
|
|
sourceIndex,
|
|
originalLine,
|
|
originalColumn,
|
|
nameIndex
|
|
) => {
|
|
const line = generatedLine + currentLineOffset;
|
|
const column =
|
|
generatedLine === 1
|
|
? generatedColumn + currentColumnOffset
|
|
: generatedColumn;
|
|
if (needToCloseMapping) {
|
|
if (generatedLine !== 1 || generatedColumn !== 0) {
|
|
onChunk(
|
|
undefined,
|
|
currentLineOffset + 1,
|
|
currentColumnOffset,
|
|
-1,
|
|
-1,
|
|
-1,
|
|
-1
|
|
);
|
|
}
|
|
needToCloseMapping = false;
|
|
}
|
|
const resultSourceIndex =
|
|
sourceIndex < 0 || sourceIndex >= sourceIndexMapping.length
|
|
? -1
|
|
: sourceIndexMapping[sourceIndex];
|
|
const resultNameIndex =
|
|
nameIndex < 0 || nameIndex >= nameIndexMapping.length
|
|
? -1
|
|
: nameIndexMapping[nameIndex];
|
|
lastMappingLine = resultSourceIndex < 0 ? 0 : generatedLine;
|
|
if (finalSource) {
|
|
if (chunk !== undefined) code += chunk;
|
|
if (resultSourceIndex >= 0) {
|
|
onChunk(
|
|
undefined,
|
|
line,
|
|
column,
|
|
resultSourceIndex,
|
|
originalLine,
|
|
originalColumn,
|
|
resultNameIndex
|
|
);
|
|
}
|
|
} else {
|
|
if (resultSourceIndex < 0) {
|
|
onChunk(chunk, line, column, -1, -1, -1, -1);
|
|
} else {
|
|
onChunk(
|
|
chunk,
|
|
line,
|
|
column,
|
|
resultSourceIndex,
|
|
originalLine,
|
|
originalColumn,
|
|
resultNameIndex
|
|
);
|
|
}
|
|
}
|
|
},
|
|
(i, source, sourceContent) => {
|
|
let globalIndex = sourceMapping.get(source);
|
|
if (globalIndex === undefined) {
|
|
sourceMapping.set(source, (globalIndex = sourceMapping.size));
|
|
onSource(globalIndex, source, sourceContent);
|
|
}
|
|
sourceIndexMapping[i] = globalIndex;
|
|
},
|
|
(i, name) => {
|
|
let globalIndex = nameMapping.get(name);
|
|
if (globalIndex === undefined) {
|
|
nameMapping.set(name, (globalIndex = nameMapping.size));
|
|
onName(globalIndex, name);
|
|
}
|
|
nameIndexMapping[i] = globalIndex;
|
|
}
|
|
);
|
|
if (source !== undefined) code += source;
|
|
if (needToCloseMapping) {
|
|
if (generatedLine !== 1 || generatedColumn !== 0) {
|
|
onChunk(
|
|
undefined,
|
|
currentLineOffset + 1,
|
|
currentColumnOffset,
|
|
-1,
|
|
-1,
|
|
-1,
|
|
-1
|
|
);
|
|
needToCloseMapping = false;
|
|
}
|
|
}
|
|
if (/** @type {number} */ (generatedLine) > 1) {
|
|
currentColumnOffset = /** @type {number} */ (generatedColumn);
|
|
} else {
|
|
currentColumnOffset += /** @type {number} */ (generatedColumn);
|
|
}
|
|
needToCloseMapping =
|
|
needToCloseMapping ||
|
|
(finalSource && lastMappingLine === generatedLine);
|
|
currentLineOffset += /** @type {number} */ (generatedLine) - 1;
|
|
}
|
|
return {
|
|
generatedLine: currentLineOffset + 1,
|
|
generatedColumn: currentColumnOffset,
|
|
source: finalSource ? code : undefined
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @param {HashLike} hash hash
|
|
* @returns {void}
|
|
*/
|
|
updateHash(hash) {
|
|
if (!this._isOptimized) this._optimize();
|
|
hash.update("ConcatSource");
|
|
for (const item of this._children) {
|
|
/** @type {Source} */
|
|
(item).updateHash(hash);
|
|
}
|
|
}
|
|
|
|
_optimize() {
|
|
const newChildren = [];
|
|
let currentString = undefined;
|
|
/** @type {undefined | string | [string, string] | SourceLike} */
|
|
let currentRawSources = undefined;
|
|
/**
|
|
* @param {string} string string
|
|
* @returns {void}
|
|
*/
|
|
const addStringToRawSources = (string) => {
|
|
if (currentRawSources === undefined) {
|
|
currentRawSources = string;
|
|
} else if (Array.isArray(currentRawSources)) {
|
|
currentRawSources.push(string);
|
|
} else {
|
|
currentRawSources = [
|
|
typeof currentRawSources === "string"
|
|
? currentRawSources
|
|
: /** @type {string} */ (currentRawSources.source()),
|
|
string
|
|
];
|
|
}
|
|
};
|
|
/**
|
|
* @param {SourceLike} source source
|
|
* @returns {void}
|
|
*/
|
|
const addSourceToRawSources = (source) => {
|
|
if (currentRawSources === undefined) {
|
|
currentRawSources = source;
|
|
} else if (Array.isArray(currentRawSources)) {
|
|
currentRawSources.push(
|
|
/** @type {string} */
|
|
(source.source())
|
|
);
|
|
} else {
|
|
currentRawSources = [
|
|
typeof currentRawSources === "string"
|
|
? currentRawSources
|
|
: /** @type {string} */ (currentRawSources.source()),
|
|
/** @type {string} */
|
|
(source.source())
|
|
];
|
|
}
|
|
};
|
|
const mergeRawSources = () => {
|
|
if (Array.isArray(currentRawSources)) {
|
|
const rawSource = new RawSource(currentRawSources.join(""));
|
|
stringsAsRawSources.add(rawSource);
|
|
newChildren.push(rawSource);
|
|
} else if (typeof currentRawSources === "string") {
|
|
const rawSource = new RawSource(currentRawSources);
|
|
stringsAsRawSources.add(rawSource);
|
|
newChildren.push(rawSource);
|
|
} else {
|
|
newChildren.push(currentRawSources);
|
|
}
|
|
};
|
|
for (const child of this._children) {
|
|
if (typeof child === "string") {
|
|
if (currentString === undefined) {
|
|
currentString = child;
|
|
} else {
|
|
currentString += child;
|
|
}
|
|
} else {
|
|
if (currentString !== undefined) {
|
|
addStringToRawSources(currentString);
|
|
currentString = undefined;
|
|
}
|
|
if (stringsAsRawSources.has(child)) {
|
|
addSourceToRawSources(
|
|
/** @type {SourceLike} */
|
|
(child)
|
|
);
|
|
} else {
|
|
if (currentRawSources !== undefined) {
|
|
mergeRawSources();
|
|
currentRawSources = undefined;
|
|
}
|
|
newChildren.push(child);
|
|
}
|
|
}
|
|
}
|
|
if (currentString !== undefined) {
|
|
addStringToRawSources(currentString);
|
|
}
|
|
if (currentRawSources !== undefined) {
|
|
mergeRawSources();
|
|
}
|
|
this._children = newChildren;
|
|
this._isOptimized = true;
|
|
}
|
|
}
|
|
|
|
module.exports = ConcatSource;
|