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META-INF.dirigible.dev-tools.formatter.FormatterWorkerPool.js Maven / Gradle / Ivy
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import * as Common from '../common/common.js';
const MaxWorkers = 2;
/**
* @unrestricted
*/
export class FormatterWorkerPool {
constructor() {
this._taskQueue = [];
/** @type {!Map} */
this._workerTasks = new Map();
}
/**
* @return {!Common.Worker.WorkerWrapper}
*/
_createWorker() {
const worker = new Common.Worker.WorkerWrapper('formatter_worker_entrypoint');
worker.onmessage = this._onWorkerMessage.bind(this, worker);
worker.onerror = this._onWorkerError.bind(this, worker);
return worker;
}
_processNextTask() {
if (!this._taskQueue.length) {
return;
}
let freeWorker = [...this._workerTasks.keys()].find(worker => !this._workerTasks.get(worker));
if (!freeWorker && this._workerTasks.size < MaxWorkers) {
freeWorker = this._createWorker();
}
if (!freeWorker) {
return;
}
const task = this._taskQueue.shift();
this._workerTasks.set(freeWorker, task);
freeWorker.postMessage({method: task.method, params: task.params});
}
/**
* @param {!Common.Worker.WorkerWrapper} worker
* @param {!MessageEvent} event
*/
_onWorkerMessage(worker, event) {
const task = this._workerTasks.get(worker);
if (task.isChunked && event.data && !event.data['isLastChunk']) {
task.callback(event.data);
return;
}
this._workerTasks.set(worker, null);
this._processNextTask();
task.callback(event.data ? event.data : null);
}
/**
* @param {!Common.Worker.WorkerWrapper} worker
* @param {!Event} event
*/
_onWorkerError(worker, event) {
console.error(event);
const task = this._workerTasks.get(worker);
worker.terminate();
this._workerTasks.delete(worker);
const newWorker = this._createWorker();
this._workerTasks.set(newWorker, null);
this._processNextTask();
task.callback(null);
}
/**
* @param {string} methodName
* @param {!Object} params
* @param {function(boolean, *)} callback
*/
_runChunkedTask(methodName, params, callback) {
const task = new Task(methodName, params, onData, true);
this._taskQueue.push(task);
this._processNextTask();
/**
* @param {?Object} data
*/
function onData(data) {
if (!data) {
callback(true, null);
return;
}
const isLastChunk = !!data['isLastChunk'];
const chunk = data['chunk'];
callback(isLastChunk, chunk);
}
}
/**
* @param {string} methodName
* @param {!Object} params
* @return {!Promise<*>}
*/
_runTask(methodName, params) {
let callback;
const promise = new Promise(fulfill => callback = fulfill);
const task = new Task(methodName, params, callback, false);
this._taskQueue.push(task);
this._processNextTask();
return promise;
}
/**
* @param {string} content
* @return {!Promise<*>}
*/
parseJSONRelaxed(content) {
return this._runTask('parseJSONRelaxed', {content: content});
}
/**
* @param {string} content
* @return {!Promise>}
*/
parseSCSS(content) {
return this._runTask('parseSCSS', {content: content}).then(rules => rules || []);
}
/**
* @param {string} mimeType
* @param {string} content
* @param {string} indentString
* @return {!Promise}
*/
format(mimeType, content, indentString) {
const parameters = {mimeType: mimeType, content: content, indentString: indentString};
return /** @type {!Promise} */ (this._runTask('format', parameters));
}
/**
* @param {string} content
* @return {!Promise>}
*/
javaScriptIdentifiers(content) {
return this._runTask('javaScriptIdentifiers', {content: content}).then(ids => ids || []);
}
/**
* @param {string} content
* @return {!Promise}
*/
evaluatableJavaScriptSubstring(content) {
return this._runTask('evaluatableJavaScriptSubstring', {content: content}).then(text => text || '');
}
/**
* @param {string} content
* @param {function(boolean, !Array)} callback
*/
parseCSS(content, callback) {
this._runChunkedTask('parseCSS', {content: content}, onDataChunk);
/**
* @param {boolean} isLastChunk
* @param {*} data
*/
function onDataChunk(isLastChunk, data) {
const rules = /** @type {!Array} */ (data || []);
callback(isLastChunk, rules);
}
}
/**
* @param {string} content
* @param {function(boolean, !Array)} callback
*/
javaScriptOutline(content, callback) {
this._runChunkedTask('javaScriptOutline', {content: content}, onDataChunk);
/**
* @param {boolean} isLastChunk
* @param {*} data
*/
function onDataChunk(isLastChunk, data) {
const items = /** @type {!Array.} */ (data || []);
callback(isLastChunk, items);
}
}
/**
* @param {string} content
* @param {string} mimeType
* @param {function(boolean, !Array)} callback
* @return {boolean}
*/
outlineForMimetype(content, mimeType, callback) {
switch (mimeType) {
case 'text/html':
case 'text/javascript':
this.javaScriptOutline(content, javaScriptCallback);
return true;
case 'text/css':
this.parseCSS(content, cssCallback);
return true;
}
return false;
/**
* @param {boolean} isLastChunk
* @param {!Array} items
*/
function javaScriptCallback(isLastChunk, items) {
callback(
isLastChunk,
items.map(item => ({line: item.line, column: item.column, title: item.name, subtitle: item.arguments})));
}
/**
* @param {boolean} isLastChunk
* @param {!Array} rules
*/
function cssCallback(isLastChunk, rules) {
callback(
isLastChunk,
rules.map(
rule => ({line: rule.lineNumber, column: rule.columnNumber, title: rule.selectorText || rule.atRule})));
}
}
/**
* @param {string} content
* @return {!Promise}
*/
findLastExpression(content) {
return /** @type {!Promise} */ (this._runTask('findLastExpression', {content}));
}
/**
* @param {string} content
* @return {!Promise}
*/
findLastFunctionCall(content) {
return /** @type {!Promise} */ (
this._runTask('findLastFunctionCall', {content}));
}
/**
* @param {string} content
* @return {!Promise>}
*/
argumentsList(content) {
return /** @type {!Promise>} */ (this._runTask('argumentsList', {content}));
}
}
/**
* @unrestricted
*/
class Task {
/**
* @param {string} method
* @param {!Object} params
* @param {function(?MessageEvent)} callback
* @param {boolean=} isChunked
*/
constructor(method, params, callback, isChunked) {
this.method = method;
this.params = params;
this.callback = callback;
this.isChunked = isChunked;
}
}
export class FormatResult {
constructor() {
/** @type {string} */
this.content;
/** @type {!FormatMapping} */
this.mapping;
}
}
// eslint-disable-next-line no-unused-vars
class JSOutlineItem {
constructor() {
/** @type {string} */
this.name;
/** @type {(string|undefined)} */
this.arguments;
/** @type {number} */
this.line;
/** @type {number} */
this.column;
}
}
// eslint-disable-next-line no-unused-vars
class CSSProperty {
constructor() {
/** @type {string} */
this.name;
/** @type {!TextRange} */
this.nameRange;
/** @type {string} */
this.value;
/** @type {!TextRange} */
this.valueRange;
/** @type {!TextRange} */
this.range;
/** @type {(boolean|undefined)} */
this.disabled;
}
}
// eslint-disable-next-line no-unused-vars
class CSSStyleRule {
constructor() {
/** @type {string} */
this.selectorText;
/** @type {!TextRange} */
this.styleRange;
/** @type {number} */
this.lineNumber;
/** @type {number} */
this.columnNumber;
/** @type {!Array.} */
this.properties;
}
}
// eslint-disable-next-line no-unused-vars
class SCSSProperty {
constructor() {
/** @type {!TextRange} */
this.range;
/** @type {!TextRange} */
this.name;
/** @type {!TextRange} */
this.value;
/** @type {boolean} */
this.disabled;
}
}
// eslint-disable-next-line no-unused-vars
class SCSSRule {
constructor() {
/** @type {!Array} */
this.selectors;
/** @type {!Array} */
this.properties;
/** @type {!TextRange} */
this.styleRange;
}
}
/**
* @return {!FormatterWorkerPool}
*/
export function formatterWorkerPool() {
if (!Formatter._formatterWorkerPool) {
Formatter._formatterWorkerPool = new FormatterWorkerPool();
}
return Formatter._formatterWorkerPool;
}
/** @typedef {{line: number, column: number, title: string, subtitle: (string|undefined) }} */
export let OutlineItem;
/** @typedef {{original: !Array, formatted: !Array}} */
export let FormatMapping;
/**
* @typedef {{atRule: string, lineNumber: number, columnNumber: number}}
*/
export let CSSAtRule;
/**
* @typedef {(CSSStyleRule|CSSAtRule)}
*/
export let CSSRule;
/**
* @typedef {{startLine: number, startColumn: number, endLine: number, endColumn: number}}
*/
export let TextRange;
