diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..1a167e4 --- /dev/null +++ b/LICENSE @@ -0,0 +1,6 @@ +Copyright and related rights for this sample code are waived via CC0. Utilities +and libraries in the sample code that are externally maintained have their own +licenses; we recommend you read them, as their terms may differ from the sample +code. + +CC0: http://creativecommons.org/publicdomain/zero/1.0/ diff --git a/README.md b/README.md index d759c4c..1caae8c 100644 --- a/README.md +++ b/README.md @@ -9,7 +9,7 @@ The most important part of this example is the app.js file, which specifies the **If you want IE6-8 support**, clone this repo, but replace the jQuery file with the latest jQuery 1.x release. The jQuery 2 file used in this project does not work with those browsers. -###Project structure +### Project structure tools/ @@ -29,7 +29,7 @@ www/js/ - app/ - main.js -###How it's set up +### How it's set up The main file of this setup is www/js/app.js. It is loaded from app.html by this line: ```html @@ -64,11 +64,11 @@ define(["jquery", "jquery.alpha", "jquery.beta"], function($) { }); ``` -###How to see it in action +### How to see it in action Just serve up the www/ folder using any web server you'd like. To get you set up quickly, we've included a node.js static file server in tools/. Start the server by typing `node tools/server.js` from the command line, and then go to [localhost:8888/www/app.html](http://localhost:8888/www/app.html) in your browser. -###How to optimize it using r.js +### How to optimize it using r.js To use the optimizer, you need [node.js](http://nodejs.org) or Java 6 installed. These instructions assume Node is being used. See the [Optimization page](http://requirejs.org/docs/optimization.html) for more information. r.js and a build configuration is included in the tools/ folder. To build, navigate to tools/ and type `node r.js -o build.js`. You will find the built product in the www-build folder. If you serve that directory instead, you can see in the network panel of the web developer tools that the files aren't loaded separately any more. diff --git a/tools/r.js b/tools/r.js index 6e6ffd0..46f2864 100644 --- a/tools/r.js +++ b/tools/r.js @@ -1,7 +1,6 @@ /** - * @license r.js 2.1.22 Copyright (c) 2010-2015, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details + * @license r.js 2.3.6 Copyright jQuery Foundation and other contributors. + * Released under MIT license, http://github.com/requirejs/r.js/LICENSE */ /* @@ -20,7 +19,7 @@ var requirejs, require, define, xpcUtil; (function (console, args, readFileFunc) { var fileName, env, fs, vm, path, exec, rhinoContext, dir, nodeRequire, nodeDefine, exists, reqMain, loadedOptimizedLib, existsForNode, Cc, Ci, - version = '2.1.22', + version = '2.3.6', jsSuffixRegExp = /\.js$/, commandOption = '', useLibLoaded = {}, @@ -31,27 +30,10 @@ var requirejs, require, define, xpcUtil; readFile = typeof readFileFunc !== 'undefined' ? readFileFunc : null; function showHelp() { - console.log('See https://github.com/jrburke/r.js for usage.'); + console.log('See https://github.com/requirejs/r.js for usage.'); } - if ((typeof navigator !== 'undefined' && typeof document !== 'undefined') || - (typeof importScripts !== 'undefined' && typeof self !== 'undefined')) { - env = 'browser'; - - readFile = function (path) { - return fs.readFileSync(path, 'utf8'); - }; - - exec = function (string) { - return eval(string); - }; - - exists = function () { - console.log('x.js exists not applicable in browser env'); - return false; - }; - - } else if (typeof process !== 'undefined' && process.versions && !!process.versions.node) { + if (typeof process !== 'undefined' && process.versions && !!process.versions.node) { env = 'node'; //Get the fs module via Node's require before it @@ -132,6 +114,23 @@ var requirejs, require, define, xpcUtil; } }; } + } else if ((typeof navigator !== 'undefined' && typeof document !== 'undefined') || + (typeof importScripts !== 'undefined' && typeof self !== 'undefined')) { + env = 'browser'; + + readFile = function (path) { + return fs.readFileSync(path, 'utf8'); + }; + + exec = function (string) { + return eval(string); + }; + + exists = function () { + console.log('x.js exists not applicable in browser env'); + return false; + }; + } else if (typeof Components !== 'undefined' && Components.classes && Components.interfaces) { env = 'xpconnect'; @@ -249,9 +248,8 @@ var requirejs, require, define, xpcUtil; } /** vim: et:ts=4:sw=4:sts=4 - * @license RequireJS 2.1.22 Copyright (c) 2010-2015, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details + * @license RequireJS 2.3.6 Copyright jQuery Foundation and other contributors. + * Released under MIT license, https://github.com/requirejs/requirejs/blob/master/LICENSE */ //Not using strict: uneven strict support in browsers, #392, and causes //problems with requirejs.exec()/transpiler plugins that may not be strict. @@ -259,18 +257,17 @@ var requirejs, require, define, xpcUtil; /*global window, navigator, document, importScripts, setTimeout, opera */ -(function (global) { +(function (global, setTimeout) { var req, s, head, baseElement, dataMain, src, interactiveScript, currentlyAddingScript, mainScript, subPath, - version = '2.1.22', - commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg, + version = '2.3.6', + commentRegExp = /\/\*[\s\S]*?\*\/|([^:"'=]|^)\/\/.*$/mg, cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g, jsSuffixRegExp = /\.js$/, currDirRegExp = /^\.\//, op = Object.prototype, ostring = op.toString, hasOwn = op.hasOwnProperty, - ap = Array.prototype, isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document), isWebWorker = !isBrowser && typeof importScripts !== 'undefined', //PS3 indicates loaded and complete, but need to wait for complete @@ -287,6 +284,11 @@ var requirejs, require, define, xpcUtil; globalDefQueue = [], useInteractive = false; + //Could match something like ')//comment', do not lose the prefix to comment. + function commentReplace(match, singlePrefix) { + return singlePrefix || ''; + } + function isFunction(it) { return ostring.call(it) === '[object Function]'; } @@ -412,7 +414,7 @@ var requirejs, require, define, xpcUtil; * @returns {Error} */ function makeError(id, msg, err, requireModules) { - var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id); + var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id); e.requireType = id; e.requireModules = requireModules; if (err) { @@ -687,7 +689,9 @@ var requirejs, require, define, xpcUtil; //Account for relative paths if there is a base name. if (name) { if (prefix) { - if (pluginModule && pluginModule.normalize) { + if (isNormalized) { + normalizedName = name; + } else if (pluginModule && pluginModule.normalize) { //Plugin is loaded, use its normalize method. normalizedName = pluginModule.normalize(name, function (name) { return normalize(name, parentName, applyMap); @@ -1111,10 +1115,21 @@ var requirejs, require, define, xpcUtil; if (this.depCount < 1 && !this.defined) { if (isFunction(factory)) { - try { + //If there is an error listener, favor passing + //to that instead of throwing an error. However, + //only do it for define()'d modules. require + //errbacks should not be called for failures in + //their callbacks (#699). However if a global + //onError is set, use that. + if ((this.events.error && this.map.isDefine) || + req.onError !== defaultOnError) { + try { + exports = context.execCb(id, factory, depExports, exports); + } catch (e) { + err = e; + } + } else { exports = context.execCb(id, factory, depExports, exports); - } catch (e) { - err = e; } // Favor return value over exports. If node/cjs in play, @@ -1131,30 +1146,12 @@ var requirejs, require, define, xpcUtil; } if (err) { - // If there is an error listener, favor passing - // to that instead of throwing an error. However, - // only do it for define()'d modules. require - // errbacks should not be called for failures in - // their callbacks (#699). However if a global - // onError is set, use that. - if ((this.events.error && this.map.isDefine) || - req.onError !== defaultOnError) { - err.requireMap = this.map; - err.requireModules = this.map.isDefine ? [this.map.id] : null; - err.requireType = this.map.isDefine ? 'define' : 'require'; - return onError((this.error = err)); - } else if (typeof console !== 'undefined' && - console.error) { - // Log the error for debugging. If promises could be - // used, this would be different, but making do. - console.error(err); - } else { - // Do not want to completely lose the error. While this - // will mess up processing and lead to similar results - // as bug 1440, it at least surfaces the error. - req.onError(err); - } + err.requireMap = this.map; + err.requireModules = this.map.isDefine ? [this.map.id] : null; + err.requireType = this.map.isDefine ? 'define' : 'require'; + return onError((this.error = err)); } + } else { //Just a literal value exports = factory; @@ -1226,7 +1223,8 @@ var requirejs, require, define, xpcUtil; //prefix and name should already be normalized, no need //for applying map config again either. normalizedMap = makeModuleMap(map.prefix + '!' + name, - this.map.parentMap); + this.map.parentMap, + true); on(normalizedMap, 'defined', bind(this, function (value) { this.map.normalizedMap = normalizedMap; @@ -1538,6 +1536,14 @@ var requirejs, require, define, xpcUtil; } } + // Convert old style urlArgs string to a function. + if (typeof cfg.urlArgs === 'string') { + var urlArgs = cfg.urlArgs; + cfg.urlArgs = function(id, url) { + return (url.indexOf('?') === -1 ? '?' : '&') + urlArgs; + }; + } + //Save off the paths since they require special processing, //they are additive. var shim = config.shim, @@ -1914,13 +1920,12 @@ var requirejs, require, define, xpcUtil; //Join the path parts together, then figure out if baseUrl is needed. url = syms.join('/'); - url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js')); + url += (ext || (/^data\:|^blob\:|\?/.test(url) || skipExt ? '' : '.js')); url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url; } - return config.urlArgs ? url + - ((url.indexOf('?') === -1 ? '?' : '&') + - config.urlArgs) : url; + return config.urlArgs && !/^blob\:/.test(url) ? + url + config.urlArgs(moduleName, url) : url; }, //Delegates to req.load. Broken out as a separate function to @@ -1974,8 +1979,8 @@ var requirejs, require, define, xpcUtil; each(value.depMaps, function(depMap) { if (depMap.id === data.id) { parents.push(key); + return true; } - return true; }); } }); @@ -2141,9 +2146,6 @@ var requirejs, require, define, xpcUtil; if (isBrowser) { //In the browser so use a script tag node = req.createNode(config, moduleName, url); - if (config.onNodeCreated) { - config.onNodeCreated(node, config, moduleName, url); - } node.setAttribute('data-requirecontext', context.contextName); node.setAttribute('data-requiremodule', moduleName); @@ -2159,11 +2161,11 @@ var requirejs, require, define, xpcUtil; if (node.attachEvent && //Check if node.attachEvent is artificially added by custom script or //natively supported by browser - //read https://github.com/jrburke/requirejs/issues/187 + //read https://github.com/requirejs/requirejs/issues/187 //if we can NOT find [native code] then it must NOT natively supported. //in IE8, node.attachEvent does not have toString() //Note the test for "[native code" with no closing brace, see: - //https://github.com/jrburke/requirejs/issues/273 + //https://github.com/requirejs/requirejs/issues/273 !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && !isOpera) { //Probably IE. IE (at least 6-8) do not fire @@ -2191,6 +2193,12 @@ var requirejs, require, define, xpcUtil; } node.src = url; + //Calling onNodeCreated after all properties on the node have been + //set, but before it is placed in the DOM. + if (config.onNodeCreated) { + config.onNodeCreated(node, config, moduleName, url); + } + //For some cache cases in IE 6-8, the script executes before the end //of the appendChild execution, so to tie an anonymous define //call to the module name (which is stored on the node), hold on @@ -2212,6 +2220,11 @@ var requirejs, require, define, xpcUtil; //are in play, the expectation is that a build has been done so //that only one script needs to be loaded anyway. This may need //to be reevaluated if other use cases become common. + + // Post a task to the event loop to work around a bug in WebKit + // where the worker gets garbage-collected after calling + // importScripts(): https://webkit.org/b/153317 + setTimeout(function() {}, 0); importScripts(url); //Account for anonymous modules @@ -2257,8 +2270,10 @@ var requirejs, require, define, xpcUtil; //Preserve dataMain in case it is a path (i.e. contains '?') mainScript = dataMain; - //Set final baseUrl if there is not already an explicit one. - if (!cfg.baseUrl) { + //Set final baseUrl if there is not already an explicit one, + //but only do so if the data-main value is not a loader plugin + //module ID. + if (!cfg.baseUrl && mainScript.indexOf('!') === -1) { //Pull off the directory of data-main for use as the //baseUrl. src = mainScript.split('/'); @@ -2319,7 +2334,7 @@ var requirejs, require, define, xpcUtil; if (callback.length) { callback .toString() - .replace(commentRegExp, '') + .replace(commentRegExp, commentReplace) .replace(cjsRequireRegExp, function (match, dep) { deps.push(dep); }); @@ -2376,7 +2391,7 @@ var requirejs, require, define, xpcUtil; //Set up with config info. req(cfg); -}(this)); +}(this, (typeof setTimeout === 'undefined' ? undefined : setTimeout))); @@ -2387,13 +2402,7 @@ var requirejs, require, define, xpcUtil; }; if (env === 'browser') { - /** - * @license RequireJS rhino Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -//sloppy since eval enclosed with use strict causes problems if the source + //sloppy since eval enclosed with use strict causes problems if the source //text is not strict-compliant. /*jslint sloppy: true, evil: true */ /*global require, XMLHttpRequest */ @@ -2421,14 +2430,7 @@ var requirejs, require, define, xpcUtil; }; }()); } else if (env === 'rhino') { - /** - * @license RequireJS rhino Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -/*jslint */ -/*global require: false, java: false, load: false */ + /*global require: false, java: false, load: false */ (function () { 'use strict'; @@ -2445,15 +2447,9 @@ var requirejs, require, define, xpcUtil; this.requirejsVars.nodeRequire = nodeRequire; require.nodeRequire = nodeRequire; - /** - * @license RequireJS node Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -//Explicity not strict since this file contains an eval call, and do not want + //Explicity not strict since this file contains an eval call, and do not want //to enforce strict on code evaluated that way. See -//https://github.com/jrburke/r.js/issues/774 +//https://github.com/requirejs/r.js/issues/774 /*jslint regexp: false, sloppy: true*/ /*global require: false, define: false, requirejsVars: false, process: false */ @@ -2625,13 +2621,7 @@ var requirejs, require, define, xpcUtil; }()); } else if (env === 'xpconnect') { - /** - * @license RequireJS xpconnect Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -/*jslint */ + /*jslint */ /*global require, load */ (function () { @@ -2660,13 +2650,7 @@ var requirejs, require, define, xpcUtil; * tasks. */ function loadLib() { - /** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -/*jslint strict: false */ + /*jslint strict: false */ /*global Packages: false, process: false, window: false, navigator: false, document: false, define: false */ @@ -2714,12 +2698,6 @@ var requirejs, require, define, xpcUtil; } }); }()); -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint plusplus: true */ /*global define, java */ @@ -3132,12 +3110,6 @@ var prim; } }()); if(env === 'browser') { -/** - * @license RequireJS Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3149,12 +3121,6 @@ define('browser/assert', function () { } if(env === 'node') { -/** - * @license RequireJS Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3166,12 +3132,6 @@ define('node/assert', ['assert'], function (assert) { } if(env === 'rhino') { -/** - * @license RequireJS Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3183,12 +3143,6 @@ define('rhino/assert', function () { } if(env === 'xpconnect') { -/** - * @license RequireJS Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3200,12 +3154,6 @@ define('xpconnect/assert', function () { } if(env === 'browser') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, process: false */ @@ -3217,12 +3165,6 @@ define('browser/args', function () { } if(env === 'node') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, process: false */ @@ -3241,12 +3183,6 @@ define('node/args', function () { } if(env === 'rhino') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, process: false */ @@ -3266,12 +3202,6 @@ define('rhino/args', function () { } if(env === 'xpconnect') { -/** - * @license Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define, xpconnectArgs */ @@ -3291,12 +3221,6 @@ define('xpconnect/args', function () { } if(env === 'browser') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, console: false */ @@ -3311,12 +3235,6 @@ define('browser/load', ['./file'], function (file) { } if(env === 'node') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, console: false */ @@ -3332,12 +3250,6 @@ define('node/load', ['fs'], function (fs) { } if(env === 'rhino') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3348,12 +3260,6 @@ define('rhino/load', function () { } if(env === 'xpconnect') { -/** - * @license RequireJS Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, load: false */ @@ -3364,12 +3270,6 @@ define('xpconnect/load', function () { } if(env === 'browser') { -/** - * @license Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint sloppy: true, nomen: true */ /*global require, define, console, XMLHttpRequest, requirejs, location */ @@ -3542,12 +3442,6 @@ define('browser/file', ['prim'], function (prim) { } if(env === 'node') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint plusplus: false, octal:false, strict: false */ /*global define: false, process: false */ @@ -3678,7 +3572,11 @@ define('node/file', ['fs', 'path', 'prim'], function (fs, path, prim) { } else if (stat.isDirectory() && (!file.exclusionRegExp || !file.exclusionRegExp.test(fileName))) { dirFiles = this.getFilteredFileList(filePath, regExpFilters, makeUnixPaths); - files.push.apply(files, dirFiles); + //Do not use push.apply for dir listings, can hit limit of max number + //of arguments to a function call, #921. + dirFiles.forEach(function (dirFile) { + files.push(dirFile); + }); } } } @@ -3852,11 +3750,6 @@ define('node/file', ['fs', 'path', 'prim'], function (fs, path, prim) { } if(env === 'rhino') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ //Helper functions to deal with file I/O. /*jslint plusplus: false */ @@ -3952,7 +3845,11 @@ define('rhino/file', ['prim'], function (prim) { } else if (fileObj.isDirectory() && (!file.exclusionRegExp || !file.exclusionRegExp.test(fileObj.getName()))) { dirFiles = this.getFilteredFileList(fileObj, regExpFilters, makeUnixPaths, true); - files.push.apply(files, dirFiles); + //Do not use push.apply for dir listings, can hit limit of max number + //of arguments to a function call, #921. + dirFiles.forEach(function (dirFile) { + files.push(dirFile); + }); } } } @@ -4152,11 +4049,6 @@ define('rhino/file', ['prim'], function (prim) { } if(env === 'xpconnect') { -/** - * @license RequireJS Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ //Helper functions to deal with file I/O. /*jslint plusplus: false */ @@ -4264,7 +4156,11 @@ define('xpconnect/file', ['prim'], function (prim) { } else if (fileObj.isDirectory() && (!file.exclusionRegExp || !file.exclusionRegExp.test(fileObj.leafName))) { dirFiles = this.getFilteredFileList(fileObj, regExpFilters, makeUnixPaths, true); - files.push.apply(files, dirFiles); + //Do not use push.apply for dir listings, can hit limit of max number + //of arguments to a function call, #921. + dirFiles.forEach(function (dirFile) { + files.push(dirFile); + }); } } } @@ -4472,12 +4368,6 @@ define('xpconnect/quit', function () { } if(env === 'browser') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, console: false */ @@ -4492,12 +4382,6 @@ define('browser/print', function () { } if(env === 'node') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, console: false */ @@ -4512,12 +4396,6 @@ define('node/print', function () { } if(env === 'rhino') { -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, print: false */ @@ -4528,12 +4406,6 @@ define('rhino/print', function () { } if(env === 'xpconnect') { -/** - * @license RequireJS Copyright (c) 2013-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false, print: false */ @@ -4542,12 +4414,6 @@ define('xpconnect/print', function () { }); } -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint nomen: false, strict: false */ /*global define: false */ @@ -4604,13587 +4470,9788 @@ define('logger', ['env!env/print'], function (print) { //so that the build does not attempt to inline some env modules, //like Node's fs and path. -/* - Copyright (c) jQuery Foundation, Inc. and Contributors, All Rights Reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -(function (root, factory) { - 'use strict'; - - // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, - // Rhino, and plain browser loading. - - /* istanbul ignore next */ - if (typeof define === 'function' && define.amd) { - define('esprima', ['exports'], factory); - } else if (typeof exports !== 'undefined') { - factory(exports); - } else { - factory((root.esprima = {})); - } -}(this, function (exports) { - 'use strict'; +(function webpackUniversalModuleDefinition(root, factory) { +/* istanbul ignore next */ + if(typeof define === 'function' && define.amd) + define('esprima', [], factory); + else if(typeof exports === 'object' && typeof module === 'object') + module.exports = factory(); +/* istanbul ignore next */ + else if(typeof exports === 'object') + exports["esprima"] = factory(); + else + root["esprima"] = factory(); +})(this, function() { +return /******/ (function(modules) { // webpackBootstrap +/******/ // The module cache +/******/ var installedModules = {}; - var Token, - TokenName, - FnExprTokens, - Syntax, - PlaceHolders, - Messages, - Regex, - source, - strict, - index, - lineNumber, - lineStart, - hasLineTerminator, - lastIndex, - lastLineNumber, - lastLineStart, - startIndex, - startLineNumber, - startLineStart, - scanning, - length, - lookahead, - state, - extra, - isBindingElement, - isAssignmentTarget, - firstCoverInitializedNameError; - - Token = { - BooleanLiteral: 1, - EOF: 2, - Identifier: 3, - Keyword: 4, - NullLiteral: 5, - NumericLiteral: 6, - Punctuator: 7, - StringLiteral: 8, - RegularExpression: 9, - Template: 10 - }; +/******/ // The require function +/******/ function __webpack_require__(moduleId) { - TokenName = {}; - TokenName[Token.BooleanLiteral] = 'Boolean'; - TokenName[Token.EOF] = ''; - TokenName[Token.Identifier] = 'Identifier'; - TokenName[Token.Keyword] = 'Keyword'; - TokenName[Token.NullLiteral] = 'Null'; - TokenName[Token.NumericLiteral] = 'Numeric'; - TokenName[Token.Punctuator] = 'Punctuator'; - TokenName[Token.StringLiteral] = 'String'; - TokenName[Token.RegularExpression] = 'RegularExpression'; - TokenName[Token.Template] = 'Template'; - - // A function following one of those tokens is an expression. - FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new', - 'return', 'case', 'delete', 'throw', 'void', - // assignment operators - '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=', - '&=', '|=', '^=', ',', - // binary/unary operators - '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&', - '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=', - '<=', '<', '>', '!=', '!==']; - - Syntax = { - AssignmentExpression: 'AssignmentExpression', - AssignmentPattern: 'AssignmentPattern', - ArrayExpression: 'ArrayExpression', - ArrayPattern: 'ArrayPattern', - ArrowFunctionExpression: 'ArrowFunctionExpression', - BlockStatement: 'BlockStatement', - BinaryExpression: 'BinaryExpression', - BreakStatement: 'BreakStatement', - CallExpression: 'CallExpression', - CatchClause: 'CatchClause', - ClassBody: 'ClassBody', - ClassDeclaration: 'ClassDeclaration', - ClassExpression: 'ClassExpression', - ConditionalExpression: 'ConditionalExpression', - ContinueStatement: 'ContinueStatement', - DoWhileStatement: 'DoWhileStatement', - DebuggerStatement: 'DebuggerStatement', - EmptyStatement: 'EmptyStatement', - ExportAllDeclaration: 'ExportAllDeclaration', - ExportDefaultDeclaration: 'ExportDefaultDeclaration', - ExportNamedDeclaration: 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SequenceExpression: 'SequenceExpression', - SpreadElement: 'SpreadElement', - Super: 'Super', - SwitchCase: 'SwitchCase', - SwitchStatement: 'SwitchStatement', - TaggedTemplateExpression: 'TaggedTemplateExpression', - TemplateElement: 'TemplateElement', - TemplateLiteral: 'TemplateLiteral', - ThisExpression: 'ThisExpression', - ThrowStatement: 'ThrowStatement', - TryStatement: 'TryStatement', - UnaryExpression: 'UnaryExpression', - UpdateExpression: 'UpdateExpression', - VariableDeclaration: 'VariableDeclaration', - VariableDeclarator: 'VariableDeclarator', - WhileStatement: 'WhileStatement', - WithStatement: 'WithStatement', - YieldExpression: 'YieldExpression' - }; +/******/ // Check if module is in cache +/* istanbul ignore if */ +/******/ if(installedModules[moduleId]) +/******/ return installedModules[moduleId].exports; - PlaceHolders = { - ArrowParameterPlaceHolder: 'ArrowParameterPlaceHolder' - }; +/******/ // Create a new module (and put it into the cache) +/******/ var module = installedModules[moduleId] = { +/******/ exports: {}, +/******/ id: moduleId, +/******/ loaded: false +/******/ }; - // Error messages should be identical to V8. - Messages = { - UnexpectedToken: 'Unexpected token %0', - UnexpectedNumber: 'Unexpected number', - UnexpectedString: 'Unexpected string', - UnexpectedIdentifier: 'Unexpected identifier', - UnexpectedReserved: 'Unexpected reserved word', - UnexpectedTemplate: 'Unexpected quasi %0', - UnexpectedEOS: 'Unexpected end of input', - NewlineAfterThrow: 'Illegal newline after throw', - InvalidRegExp: 'Invalid regular expression', - UnterminatedRegExp: 'Invalid regular expression: missing /', - InvalidLHSInAssignment: 'Invalid left-hand side in assignment', - InvalidLHSInForIn: 'Invalid left-hand side in for-in', - InvalidLHSInForLoop: 'Invalid left-hand side in for-loop', - MultipleDefaultsInSwitch: 'More than one default clause in switch statement', - NoCatchOrFinally: 'Missing catch or finally after try', - UnknownLabel: 'Undefined label \'%0\'', - Redeclaration: '%0 \'%1\' has already been declared', - IllegalContinue: 'Illegal continue statement', - IllegalBreak: 'Illegal break statement', - IllegalReturn: 'Illegal return statement', - StrictModeWith: 'Strict mode code may not include a with statement', - StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', - StrictVarName: 'Variable name may not be eval or arguments in strict mode', - StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', - StrictParamDupe: 'Strict mode function may not have duplicate parameter names', - StrictFunctionName: 'Function name may not be eval or arguments in strict mode', - StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', - StrictDelete: 'Delete of an unqualified identifier in strict mode.', - StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', - StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', - StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', - StrictReservedWord: 'Use of future reserved word in strict mode', - TemplateOctalLiteral: 'Octal literals are not allowed in template strings.', - ParameterAfterRestParameter: 'Rest parameter must be last formal parameter', - DefaultRestParameter: 'Unexpected token =', - ObjectPatternAsRestParameter: 'Unexpected token {', - DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals', - ConstructorSpecialMethod: 'Class constructor may not be an accessor', - DuplicateConstructor: 'A class may only have one constructor', - StaticPrototype: 'Classes may not have static property named prototype', - MissingFromClause: 'Unexpected token', - NoAsAfterImportNamespace: 'Unexpected token', - InvalidModuleSpecifier: 'Unexpected token', - IllegalImportDeclaration: 'Unexpected token', - IllegalExportDeclaration: 'Unexpected token', - DuplicateBinding: 'Duplicate binding %0' - }; +/******/ // Execute the module function +/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); - // See also tools/generate-unicode-regex.js. - Regex = { - // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart: - NonAsciiIdentifierStart: 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- }; +/******/ // Return the exports of the module +/******/ return module.exports; +/******/ } - // Ensure the condition is true, otherwise throw an error. - // This is only to have a better contract semantic, i.e. another safety net - // to catch a logic error. The condition shall be fulfilled in normal case. - // Do NOT use this to enforce a certain condition on any user input. - function assert(condition, message) { - /* istanbul ignore if */ - if (!condition) { - throw new Error('ASSERT: ' + message); - } - } +/******/ // expose the modules object (__webpack_modules__) +/******/ __webpack_require__.m = modules; - function isDecimalDigit(ch) { - return (ch >= 0x30 && ch <= 0x39); // 0..9 - } +/******/ // expose the module cache +/******/ __webpack_require__.c = installedModules; - function isHexDigit(ch) { - return '0123456789abcdefABCDEF'.indexOf(ch) >= 0; - } +/******/ // __webpack_public_path__ +/******/ __webpack_require__.p = ""; - function isOctalDigit(ch) { - return '01234567'.indexOf(ch) >= 0; - } +/******/ // Load entry module and return exports +/******/ return __webpack_require__(0); +/******/ }) +/************************************************************************/ +/******/ ([ +/* 0 */ +/***/ function(module, exports, __webpack_require__) { - function octalToDecimal(ch) { - // \0 is not octal escape sequence - var octal = (ch !== '0'), code = '01234567'.indexOf(ch); + "use strict"; + /* + Copyright JS Foundation and other contributors, https://js.foundation/ + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + Object.defineProperty(exports, "__esModule", { value: true }); + var comment_handler_1 = __webpack_require__(1); + var jsx_parser_1 = __webpack_require__(3); + var parser_1 = __webpack_require__(8); + var tokenizer_1 = __webpack_require__(15); + function parse(code, options, delegate) { + var commentHandler = null; + var proxyDelegate = function (node, metadata) { + if (delegate) { + delegate(node, metadata); + } + if (commentHandler) { + commentHandler.visit(node, metadata); + } + }; + var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null; + var collectComment = false; + if (options) { + collectComment = (typeof options.comment === 'boolean' && options.comment); + var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment); + if (collectComment || attachComment) { + commentHandler = new comment_handler_1.CommentHandler(); + commentHandler.attach = attachComment; + options.comment = true; + parserDelegate = proxyDelegate; + } + } + var isModule = false; + if (options && typeof options.sourceType === 'string') { + isModule = (options.sourceType === 'module'); + } + var parser; + if (options && typeof options.jsx === 'boolean' && options.jsx) { + parser = new jsx_parser_1.JSXParser(code, options, parserDelegate); + } + else { + parser = new parser_1.Parser(code, options, parserDelegate); + } + var program = isModule ? parser.parseModule() : parser.parseScript(); + var ast = program; + if (collectComment && commentHandler) { + ast.comments = commentHandler.comments; + } + if (parser.config.tokens) { + ast.tokens = parser.tokens; + } + if (parser.config.tolerant) { + ast.errors = parser.errorHandler.errors; + } + return ast; + } + exports.parse = parse; + function parseModule(code, options, delegate) { + var parsingOptions = options || {}; + parsingOptions.sourceType = 'module'; + return parse(code, parsingOptions, delegate); + } + exports.parseModule = parseModule; + function parseScript(code, options, delegate) { + var parsingOptions = options || {}; + parsingOptions.sourceType = 'script'; + return parse(code, parsingOptions, delegate); + } + exports.parseScript = parseScript; + function tokenize(code, options, delegate) { + var tokenizer = new tokenizer_1.Tokenizer(code, options); + var tokens; + tokens = []; + try { + while (true) { + var token = tokenizer.getNextToken(); + if (!token) { + break; + } + if (delegate) { + token = delegate(token); + } + tokens.push(token); + } + } + catch (e) { + tokenizer.errorHandler.tolerate(e); + } + if (tokenizer.errorHandler.tolerant) { + tokens.errors = tokenizer.errors(); + } + return tokens; + } + exports.tokenize = tokenize; + var syntax_1 = __webpack_require__(2); + exports.Syntax = syntax_1.Syntax; + // Sync with *.json manifests. + exports.version = '4.0.1'; - if (index < length && isOctalDigit(source[index])) { - octal = true; - code = code * 8 + '01234567'.indexOf(source[index++]); - // 3 digits are only allowed when string starts - // with 0, 1, 2, 3 - if ('0123'.indexOf(ch) >= 0 && - index < length && - isOctalDigit(source[index])) { - code = code * 8 + '01234567'.indexOf(source[index++]); - } - } +/***/ }, +/* 1 */ +/***/ function(module, exports, __webpack_require__) { - return { - code: code, - octal: octal - }; - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var syntax_1 = __webpack_require__(2); + var CommentHandler = (function () { + function CommentHandler() { + this.attach = false; + this.comments = []; + this.stack = []; + this.leading = []; + this.trailing = []; + } + CommentHandler.prototype.insertInnerComments = function (node, metadata) { + // innnerComments for properties empty block + // `function a() {/** comments **\/}` + if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) { + var innerComments = []; + for (var i = this.leading.length - 1; i >= 0; --i) { + var entry = this.leading[i]; + if (metadata.end.offset >= entry.start) { + innerComments.unshift(entry.comment); + this.leading.splice(i, 1); + this.trailing.splice(i, 1); + } + } + if (innerComments.length) { + node.innerComments = innerComments; + } + } + }; + CommentHandler.prototype.findTrailingComments = function (metadata) { + var trailingComments = []; + if (this.trailing.length > 0) { + for (var i = this.trailing.length - 1; i >= 0; --i) { + var entry_1 = this.trailing[i]; + if (entry_1.start >= metadata.end.offset) { + trailingComments.unshift(entry_1.comment); + } + } + this.trailing.length = 0; + return trailingComments; + } + var entry = this.stack[this.stack.length - 1]; + if (entry && entry.node.trailingComments) { + var firstComment = entry.node.trailingComments[0]; + if (firstComment && firstComment.range[0] >= metadata.end.offset) { + trailingComments = entry.node.trailingComments; + delete entry.node.trailingComments; + } + } + return trailingComments; + }; + CommentHandler.prototype.findLeadingComments = function (metadata) { + var leadingComments = []; + var target; + while (this.stack.length > 0) { + var entry = this.stack[this.stack.length - 1]; + if (entry && entry.start >= metadata.start.offset) { + target = entry.node; + this.stack.pop(); + } + else { + break; + } + } + if (target) { + var count = target.leadingComments ? target.leadingComments.length : 0; + for (var i = count - 1; i >= 0; --i) { + var comment = target.leadingComments[i]; + if (comment.range[1] <= metadata.start.offset) { + leadingComments.unshift(comment); + target.leadingComments.splice(i, 1); + } + } + if (target.leadingComments && target.leadingComments.length === 0) { + delete target.leadingComments; + } + return leadingComments; + } + for (var i = this.leading.length - 1; i >= 0; --i) { + var entry = this.leading[i]; + if (entry.start <= metadata.start.offset) { + leadingComments.unshift(entry.comment); + this.leading.splice(i, 1); + } + } + return leadingComments; + }; + CommentHandler.prototype.visitNode = function (node, metadata) { + if (node.type === syntax_1.Syntax.Program && node.body.length > 0) { + return; + } + this.insertInnerComments(node, metadata); + var trailingComments = this.findTrailingComments(metadata); + var leadingComments = this.findLeadingComments(metadata); + if (leadingComments.length > 0) { + node.leadingComments = leadingComments; + } + if (trailingComments.length > 0) { + node.trailingComments = trailingComments; + } + this.stack.push({ + node: node, + start: metadata.start.offset + }); + }; + CommentHandler.prototype.visitComment = function (node, metadata) { + var type = (node.type[0] === 'L') ? 'Line' : 'Block'; + var comment = { + type: type, + value: node.value + }; + if (node.range) { + comment.range = node.range; + } + if (node.loc) { + comment.loc = node.loc; + } + this.comments.push(comment); + if (this.attach) { + var entry = { + comment: { + type: type, + value: node.value, + range: [metadata.start.offset, metadata.end.offset] + }, + start: metadata.start.offset + }; + if (node.loc) { + entry.comment.loc = node.loc; + } + node.type = type; + this.leading.push(entry); + this.trailing.push(entry); + } + }; + CommentHandler.prototype.visit = function (node, metadata) { + if (node.type === 'LineComment') { + this.visitComment(node, metadata); + } + else if (node.type === 'BlockComment') { + this.visitComment(node, metadata); + } + else if (this.attach) { + this.visitNode(node, metadata); + } + }; + return CommentHandler; + }()); + exports.CommentHandler = CommentHandler; - // ECMA-262 11.2 White Space - function isWhiteSpace(ch) { - return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) || - (ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0); - } +/***/ }, +/* 2 */ +/***/ function(module, exports) { - // ECMA-262 11.3 Line Terminators + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + exports.Syntax = { + AssignmentExpression: 'AssignmentExpression', + AssignmentPattern: 'AssignmentPattern', + ArrayExpression: 'ArrayExpression', + ArrayPattern: 'ArrayPattern', + ArrowFunctionExpression: 'ArrowFunctionExpression', + AwaitExpression: 'AwaitExpression', + BlockStatement: 'BlockStatement', + BinaryExpression: 'BinaryExpression', + BreakStatement: 'BreakStatement', + CallExpression: 'CallExpression', + CatchClause: 'CatchClause', + ClassBody: 'ClassBody', + ClassDeclaration: 'ClassDeclaration', + ClassExpression: 'ClassExpression', + ConditionalExpression: 'ConditionalExpression', + ContinueStatement: 'ContinueStatement', + DoWhileStatement: 'DoWhileStatement', + DebuggerStatement: 'DebuggerStatement', + EmptyStatement: 'EmptyStatement', + ExportAllDeclaration: 'ExportAllDeclaration', + ExportDefaultDeclaration: 'ExportDefaultDeclaration', + ExportNamedDeclaration: 'ExportNamedDeclaration', + ExportSpecifier: 'ExportSpecifier', + ExpressionStatement: 'ExpressionStatement', + ForStatement: 'ForStatement', + ForOfStatement: 'ForOfStatement', + ForInStatement: 'ForInStatement', + FunctionDeclaration: 'FunctionDeclaration', + FunctionExpression: 'FunctionExpression', + Identifier: 'Identifier', + IfStatement: 'IfStatement', + ImportDeclaration: 'ImportDeclaration', + ImportDefaultSpecifier: 'ImportDefaultSpecifier', + ImportNamespaceSpecifier: 'ImportNamespaceSpecifier', + ImportSpecifier: 'ImportSpecifier', + Literal: 'Literal', + LabeledStatement: 'LabeledStatement', + LogicalExpression: 'LogicalExpression', + MemberExpression: 'MemberExpression', + MetaProperty: 'MetaProperty', + MethodDefinition: 'MethodDefinition', + NewExpression: 'NewExpression', + ObjectExpression: 'ObjectExpression', + ObjectPattern: 'ObjectPattern', + Program: 'Program', + Property: 'Property', + RestElement: 'RestElement', + ReturnStatement: 'ReturnStatement', + SequenceExpression: 'SequenceExpression', + SpreadElement: 'SpreadElement', + Super: 'Super', + SwitchCase: 'SwitchCase', + SwitchStatement: 'SwitchStatement', + TaggedTemplateExpression: 'TaggedTemplateExpression', + TemplateElement: 'TemplateElement', + TemplateLiteral: 'TemplateLiteral', + ThisExpression: 'ThisExpression', + ThrowStatement: 'ThrowStatement', + TryStatement: 'TryStatement', + UnaryExpression: 'UnaryExpression', + UpdateExpression: 'UpdateExpression', + VariableDeclaration: 'VariableDeclaration', + VariableDeclarator: 'VariableDeclarator', + WhileStatement: 'WhileStatement', + WithStatement: 'WithStatement', + YieldExpression: 'YieldExpression' + }; - function isLineTerminator(ch) { - return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029); - } - // ECMA-262 11.6 Identifier Names and Identifiers +/***/ }, +/* 3 */ +/***/ function(module, exports, __webpack_require__) { - function fromCodePoint(cp) { - return (cp < 0x10000) ? String.fromCharCode(cp) : - String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) + - String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023)); - } + "use strict"; +/* istanbul ignore next */ + var __extends = (this && this.__extends) || (function () { + var extendStatics = Object.setPrototypeOf || + ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || + function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; + return function (d, b) { + extendStatics(d, b); + function __() { this.constructor = d; } + d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); + }; + })(); + Object.defineProperty(exports, "__esModule", { value: true }); + var character_1 = __webpack_require__(4); + var JSXNode = __webpack_require__(5); + var jsx_syntax_1 = __webpack_require__(6); + var Node = __webpack_require__(7); + var parser_1 = __webpack_require__(8); + var token_1 = __webpack_require__(13); + var xhtml_entities_1 = __webpack_require__(14); + token_1.TokenName[100 /* Identifier */] = 'JSXIdentifier'; + token_1.TokenName[101 /* Text */] = 'JSXText'; + // Fully qualified element name, e.g. returns "svg:path" + function getQualifiedElementName(elementName) { + var qualifiedName; + switch (elementName.type) { + case jsx_syntax_1.JSXSyntax.JSXIdentifier: + var id = elementName; + qualifiedName = id.name; + break; + case jsx_syntax_1.JSXSyntax.JSXNamespacedName: + var ns = elementName; + qualifiedName = getQualifiedElementName(ns.namespace) + ':' + + getQualifiedElementName(ns.name); + break; + case jsx_syntax_1.JSXSyntax.JSXMemberExpression: + var expr = elementName; + qualifiedName = getQualifiedElementName(expr.object) + '.' + + getQualifiedElementName(expr.property); + break; + /* istanbul ignore next */ + default: + break; + } + return qualifiedName; + } + var JSXParser = (function (_super) { + __extends(JSXParser, _super); + function JSXParser(code, options, delegate) { + return _super.call(this, code, options, delegate) || this; + } + JSXParser.prototype.parsePrimaryExpression = function () { + return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this); + }; + JSXParser.prototype.startJSX = function () { + // Unwind the scanner before the lookahead token. + this.scanner.index = this.startMarker.index; + this.scanner.lineNumber = this.startMarker.line; + this.scanner.lineStart = this.startMarker.index - this.startMarker.column; + }; + JSXParser.prototype.finishJSX = function () { + // Prime the next lookahead. + this.nextToken(); + }; + JSXParser.prototype.reenterJSX = function () { + this.startJSX(); + this.expectJSX('}'); + // Pop the closing '}' added from the lookahead. + if (this.config.tokens) { + this.tokens.pop(); + } + }; + JSXParser.prototype.createJSXNode = function () { + this.collectComments(); + return { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; + }; + JSXParser.prototype.createJSXChildNode = function () { + return { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; + }; + JSXParser.prototype.scanXHTMLEntity = function (quote) { + var result = '&'; + var valid = true; + var terminated = false; + var numeric = false; + var hex = false; + while (!this.scanner.eof() && valid && !terminated) { + var ch = this.scanner.source[this.scanner.index]; + if (ch === quote) { + break; + } + terminated = (ch === ';'); + result += ch; + ++this.scanner.index; + if (!terminated) { + switch (result.length) { + case 2: + // e.g. '{' + numeric = (ch === '#'); + break; + case 3: + if (numeric) { + // e.g. 'A' + hex = (ch === 'x'); + valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0)); + numeric = numeric && !hex; + } + break; + default: + valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0))); + valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0))); + break; + } + } + } + if (valid && terminated && result.length > 2) { + // e.g. 'A' becomes just '#x41' + var str = result.substr(1, result.length - 2); + if (numeric && str.length > 1) { + result = String.fromCharCode(parseInt(str.substr(1), 10)); + } + else if (hex && str.length > 2) { + result = String.fromCharCode(parseInt('0' + str.substr(1), 16)); + } + else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) { + result = xhtml_entities_1.XHTMLEntities[str]; + } + } + return result; + }; + // Scan the next JSX token. This replaces Scanner#lex when in JSX mode. + JSXParser.prototype.lexJSX = function () { + var cp = this.scanner.source.charCodeAt(this.scanner.index); + // < > / : = { } + if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) { + var value = this.scanner.source[this.scanner.index++]; + return { + type: 7 /* Punctuator */, + value: value, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: this.scanner.index - 1, + end: this.scanner.index + }; + } + // " ' + if (cp === 34 || cp === 39) { + var start = this.scanner.index; + var quote = this.scanner.source[this.scanner.index++]; + var str = ''; + while (!this.scanner.eof()) { + var ch = this.scanner.source[this.scanner.index++]; + if (ch === quote) { + break; + } + else if (ch === '&') { + str += this.scanXHTMLEntity(quote); + } + else { + str += ch; + } + } + return { + type: 8 /* StringLiteral */, + value: str, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + // ... or . + if (cp === 46) { + var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1); + var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2); + var value = (n1 === 46 && n2 === 46) ? '...' : '.'; + var start = this.scanner.index; + this.scanner.index += value.length; + return { + type: 7 /* Punctuator */, + value: value, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + // ` + if (cp === 96) { + // Only placeholder, since it will be rescanned as a real assignment expression. + return { + type: 10 /* Template */, + value: '', + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: this.scanner.index, + end: this.scanner.index + }; + } + // Identifer can not contain backslash (char code 92). + if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) { + var start = this.scanner.index; + ++this.scanner.index; + while (!this.scanner.eof()) { + var ch = this.scanner.source.charCodeAt(this.scanner.index); + if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) { + ++this.scanner.index; + } + else if (ch === 45) { + // Hyphen (char code 45) can be part of an identifier. + ++this.scanner.index; + } + else { + break; + } + } + var id = this.scanner.source.slice(start, this.scanner.index); + return { + type: 100 /* Identifier */, + value: id, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + } + return this.scanner.lex(); + }; + JSXParser.prototype.nextJSXToken = function () { + this.collectComments(); + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + var token = this.lexJSX(); + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + if (this.config.tokens) { + this.tokens.push(this.convertToken(token)); + } + return token; + }; + JSXParser.prototype.nextJSXText = function () { + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + var start = this.scanner.index; + var text = ''; + while (!this.scanner.eof()) { + var ch = this.scanner.source[this.scanner.index]; + if (ch === '{' || ch === '<') { + break; + } + ++this.scanner.index; + text += ch; + if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) { + ++this.scanner.lineNumber; + if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') { + ++this.scanner.index; + } + this.scanner.lineStart = this.scanner.index; + } + } + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + var token = { + type: 101 /* Text */, + value: text, + lineNumber: this.scanner.lineNumber, + lineStart: this.scanner.lineStart, + start: start, + end: this.scanner.index + }; + if ((text.length > 0) && this.config.tokens) { + this.tokens.push(this.convertToken(token)); + } + return token; + }; + JSXParser.prototype.peekJSXToken = function () { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.lexJSX(); + this.scanner.restoreState(state); + return next; + }; + // Expect the next JSX token to match the specified punctuator. + // If not, an exception will be thrown. + JSXParser.prototype.expectJSX = function (value) { + var token = this.nextJSXToken(); + if (token.type !== 7 /* Punctuator */ || token.value !== value) { + this.throwUnexpectedToken(token); + } + }; + // Return true if the next JSX token matches the specified punctuator. + JSXParser.prototype.matchJSX = function (value) { + var next = this.peekJSXToken(); + return next.type === 7 /* Punctuator */ && next.value === value; + }; + JSXParser.prototype.parseJSXIdentifier = function () { + var node = this.createJSXNode(); + var token = this.nextJSXToken(); + if (token.type !== 100 /* Identifier */) { + this.throwUnexpectedToken(token); + } + return this.finalize(node, new JSXNode.JSXIdentifier(token.value)); + }; + JSXParser.prototype.parseJSXElementName = function () { + var node = this.createJSXNode(); + var elementName = this.parseJSXIdentifier(); + if (this.matchJSX(':')) { + var namespace = elementName; + this.expectJSX(':'); + var name_1 = this.parseJSXIdentifier(); + elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1)); + } + else if (this.matchJSX('.')) { + while (this.matchJSX('.')) { + var object = elementName; + this.expectJSX('.'); + var property = this.parseJSXIdentifier(); + elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property)); + } + } + return elementName; + }; + JSXParser.prototype.parseJSXAttributeName = function () { + var node = this.createJSXNode(); + var attributeName; + var identifier = this.parseJSXIdentifier(); + if (this.matchJSX(':')) { + var namespace = identifier; + this.expectJSX(':'); + var name_2 = this.parseJSXIdentifier(); + attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2)); + } + else { + attributeName = identifier; + } + return attributeName; + }; + JSXParser.prototype.parseJSXStringLiteralAttribute = function () { + var node = this.createJSXNode(); + var token = this.nextJSXToken(); + if (token.type !== 8 /* StringLiteral */) { + this.throwUnexpectedToken(token); + } + var raw = this.getTokenRaw(token); + return this.finalize(node, new Node.Literal(token.value, raw)); + }; + JSXParser.prototype.parseJSXExpressionAttribute = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + this.finishJSX(); + if (this.match('}')) { + this.tolerateError('JSX attributes must only be assigned a non-empty expression'); + } + var expression = this.parseAssignmentExpression(); + this.reenterJSX(); + return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); + }; + JSXParser.prototype.parseJSXAttributeValue = function () { + return this.matchJSX('{') ? this.parseJSXExpressionAttribute() : + this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute(); + }; + JSXParser.prototype.parseJSXNameValueAttribute = function () { + var node = this.createJSXNode(); + var name = this.parseJSXAttributeName(); + var value = null; + if (this.matchJSX('=')) { + this.expectJSX('='); + value = this.parseJSXAttributeValue(); + } + return this.finalize(node, new JSXNode.JSXAttribute(name, value)); + }; + JSXParser.prototype.parseJSXSpreadAttribute = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + this.expectJSX('...'); + this.finishJSX(); + var argument = this.parseAssignmentExpression(); + this.reenterJSX(); + return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument)); + }; + JSXParser.prototype.parseJSXAttributes = function () { + var attributes = []; + while (!this.matchJSX('/') && !this.matchJSX('>')) { + var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() : + this.parseJSXNameValueAttribute(); + attributes.push(attribute); + } + return attributes; + }; + JSXParser.prototype.parseJSXOpeningElement = function () { + var node = this.createJSXNode(); + this.expectJSX('<'); + var name = this.parseJSXElementName(); + var attributes = this.parseJSXAttributes(); + var selfClosing = this.matchJSX('/'); + if (selfClosing) { + this.expectJSX('/'); + } + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); + }; + JSXParser.prototype.parseJSXBoundaryElement = function () { + var node = this.createJSXNode(); + this.expectJSX('<'); + if (this.matchJSX('/')) { + this.expectJSX('/'); + var name_3 = this.parseJSXElementName(); + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXClosingElement(name_3)); + } + var name = this.parseJSXElementName(); + var attributes = this.parseJSXAttributes(); + var selfClosing = this.matchJSX('/'); + if (selfClosing) { + this.expectJSX('/'); + } + this.expectJSX('>'); + return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); + }; + JSXParser.prototype.parseJSXEmptyExpression = function () { + var node = this.createJSXChildNode(); + this.collectComments(); + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + return this.finalize(node, new JSXNode.JSXEmptyExpression()); + }; + JSXParser.prototype.parseJSXExpressionContainer = function () { + var node = this.createJSXNode(); + this.expectJSX('{'); + var expression; + if (this.matchJSX('}')) { + expression = this.parseJSXEmptyExpression(); + this.expectJSX('}'); + } + else { + this.finishJSX(); + expression = this.parseAssignmentExpression(); + this.reenterJSX(); + } + return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); + }; + JSXParser.prototype.parseJSXChildren = function () { + var children = []; + while (!this.scanner.eof()) { + var node = this.createJSXChildNode(); + var token = this.nextJSXText(); + if (token.start < token.end) { + var raw = this.getTokenRaw(token); + var child = this.finalize(node, new JSXNode.JSXText(token.value, raw)); + children.push(child); + } + if (this.scanner.source[this.scanner.index] === '{') { + var container = this.parseJSXExpressionContainer(); + children.push(container); + } + else { + break; + } + } + return children; + }; + JSXParser.prototype.parseComplexJSXElement = function (el) { + var stack = []; + while (!this.scanner.eof()) { + el.children = el.children.concat(this.parseJSXChildren()); + var node = this.createJSXChildNode(); + var element = this.parseJSXBoundaryElement(); + if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) { + var opening = element; + if (opening.selfClosing) { + var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null)); + el.children.push(child); + } + else { + stack.push(el); + el = { node: node, opening: opening, closing: null, children: [] }; + } + } + if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) { + el.closing = element; + var open_1 = getQualifiedElementName(el.opening.name); + var close_1 = getQualifiedElementName(el.closing.name); + if (open_1 !== close_1) { + this.tolerateError('Expected corresponding JSX closing tag for %0', open_1); + } + if (stack.length > 0) { + var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing)); + el = stack[stack.length - 1]; + el.children.push(child); + stack.pop(); + } + else { + break; + } + } + } + return el; + }; + JSXParser.prototype.parseJSXElement = function () { + var node = this.createJSXNode(); + var opening = this.parseJSXOpeningElement(); + var children = []; + var closing = null; + if (!opening.selfClosing) { + var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children }); + children = el.children; + closing = el.closing; + } + return this.finalize(node, new JSXNode.JSXElement(opening, children, closing)); + }; + JSXParser.prototype.parseJSXRoot = function () { + // Pop the opening '<' added from the lookahead. + if (this.config.tokens) { + this.tokens.pop(); + } + this.startJSX(); + var element = this.parseJSXElement(); + this.finishJSX(); + return element; + }; + JSXParser.prototype.isStartOfExpression = function () { + return _super.prototype.isStartOfExpression.call(this) || this.match('<'); + }; + return JSXParser; + }(parser_1.Parser)); + exports.JSXParser = JSXParser; - function isIdentifierStart(ch) { - return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) - (ch >= 0x41 && ch <= 0x5A) || // A..Z - (ch >= 0x61 && ch <= 0x7A) || // a..z - (ch === 0x5C) || // \ (backslash) - ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch))); - } - function isIdentifierPart(ch) { - return (ch === 0x24) || (ch === 0x5F) || // $ (dollar) and _ (underscore) - (ch >= 0x41 && ch <= 0x5A) || // A..Z - (ch >= 0x61 && ch <= 0x7A) || // a..z - (ch >= 0x30 && ch <= 0x39) || // 0..9 - (ch === 0x5C) || // \ (backslash) - ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch))); - } +/***/ }, +/* 4 */ +/***/ function(module, exports) { - // ECMA-262 11.6.2.2 Future Reserved Words + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + // See also tools/generate-unicode-regex.js. + var Regex = { + // Unicode v8.0.0 NonAsciiIdentifierStart: + NonAsciiIdentifierStart: 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+ // Unicode v8.0.0 NonAsciiIdentifierPart: + NonAsciiIdentifierPart: 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+ }; + exports.Character = { + /* tslint:disable:no-bitwise */ + fromCodePoint: function (cp) { + return (cp < 0x10000) ? String.fromCharCode(cp) : + String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) + + String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023)); + }, + // https://tc39.github.io/ecma262/#sec-white-space + isWhiteSpace: function (cp) { + return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) || + (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0); + }, + // https://tc39.github.io/ecma262/#sec-line-terminators + isLineTerminator: function (cp) { + return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029); + }, + // https://tc39.github.io/ecma262/#sec-names-and-keywords + isIdentifierStart: function (cp) { + return (cp === 0x24) || (cp === 0x5F) || + (cp >= 0x41 && cp <= 0x5A) || + (cp >= 0x61 && cp <= 0x7A) || + (cp === 0x5C) || + ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp))); + }, + isIdentifierPart: function (cp) { + return (cp === 0x24) || (cp === 0x5F) || + (cp >= 0x41 && cp <= 0x5A) || + (cp >= 0x61 && cp <= 0x7A) || + (cp >= 0x30 && cp <= 0x39) || + (cp === 0x5C) || + ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp))); + }, + // https://tc39.github.io/ecma262/#sec-literals-numeric-literals + isDecimalDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x39); // 0..9 + }, + isHexDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x39) || + (cp >= 0x41 && cp <= 0x46) || + (cp >= 0x61 && cp <= 0x66); // a..f + }, + isOctalDigit: function (cp) { + return (cp >= 0x30 && cp <= 0x37); // 0..7 + } + }; - function isFutureReservedWord(id) { - switch (id) { - case 'enum': - case 'export': - case 'import': - case 'super': - return true; - default: - return false; - } - } - function isStrictModeReservedWord(id) { - switch (id) { - case 'implements': - case 'interface': - case 'package': - case 'private': - case 'protected': - case 'public': - case 'static': - case 'yield': - case 'let': - return true; - default: - return false; - } - } +/***/ }, +/* 5 */ +/***/ function(module, exports, __webpack_require__) { - function isRestrictedWord(id) { - return id === 'eval' || id === 'arguments'; - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var jsx_syntax_1 = __webpack_require__(6); + /* tslint:disable:max-classes-per-file */ + var JSXClosingElement = (function () { + function JSXClosingElement(name) { + this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement; + this.name = name; + } + return JSXClosingElement; + }()); + exports.JSXClosingElement = JSXClosingElement; + var JSXElement = (function () { + function JSXElement(openingElement, children, closingElement) { + this.type = jsx_syntax_1.JSXSyntax.JSXElement; + this.openingElement = openingElement; + this.children = children; + this.closingElement = closingElement; + } + return JSXElement; + }()); + exports.JSXElement = JSXElement; + var JSXEmptyExpression = (function () { + function JSXEmptyExpression() { + this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression; + } + return JSXEmptyExpression; + }()); + exports.JSXEmptyExpression = JSXEmptyExpression; + var JSXExpressionContainer = (function () { + function JSXExpressionContainer(expression) { + this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer; + this.expression = expression; + } + return JSXExpressionContainer; + }()); + exports.JSXExpressionContainer = JSXExpressionContainer; + var JSXIdentifier = (function () { + function JSXIdentifier(name) { + this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier; + this.name = name; + } + return JSXIdentifier; + }()); + exports.JSXIdentifier = JSXIdentifier; + var JSXMemberExpression = (function () { + function JSXMemberExpression(object, property) { + this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression; + this.object = object; + this.property = property; + } + return JSXMemberExpression; + }()); + exports.JSXMemberExpression = JSXMemberExpression; + var JSXAttribute = (function () { + function JSXAttribute(name, value) { + this.type = jsx_syntax_1.JSXSyntax.JSXAttribute; + this.name = name; + this.value = value; + } + return JSXAttribute; + }()); + exports.JSXAttribute = JSXAttribute; + var JSXNamespacedName = (function () { + function JSXNamespacedName(namespace, name) { + this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName; + this.namespace = namespace; + this.name = name; + } + return JSXNamespacedName; + }()); + exports.JSXNamespacedName = JSXNamespacedName; + var JSXOpeningElement = (function () { + function JSXOpeningElement(name, selfClosing, attributes) { + this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement; + this.name = name; + this.selfClosing = selfClosing; + this.attributes = attributes; + } + return JSXOpeningElement; + }()); + exports.JSXOpeningElement = JSXOpeningElement; + var JSXSpreadAttribute = (function () { + function JSXSpreadAttribute(argument) { + this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute; + this.argument = argument; + } + return JSXSpreadAttribute; + }()); + exports.JSXSpreadAttribute = JSXSpreadAttribute; + var JSXText = (function () { + function JSXText(value, raw) { + this.type = jsx_syntax_1.JSXSyntax.JSXText; + this.value = value; + this.raw = raw; + } + return JSXText; + }()); + exports.JSXText = JSXText; - // ECMA-262 11.6.2.1 Keywords - - function isKeyword(id) { - switch (id.length) { - case 2: - return (id === 'if') || (id === 'in') || (id === 'do'); - case 3: - return (id === 'var') || (id === 'for') || (id === 'new') || - (id === 'try') || (id === 'let'); - case 4: - return (id === 'this') || (id === 'else') || (id === 'case') || - (id === 'void') || (id === 'with') || (id === 'enum'); - case 5: - return (id === 'while') || (id === 'break') || (id === 'catch') || - (id === 'throw') || (id === 'const') || (id === 'yield') || - (id === 'class') || (id === 'super'); - case 6: - return (id === 'return') || (id === 'typeof') || (id === 'delete') || - (id === 'switch') || (id === 'export') || (id === 'import'); - case 7: - return (id === 'default') || (id === 'finally') || (id === 'extends'); - case 8: - return (id === 'function') || (id === 'continue') || (id === 'debugger'); - case 10: - return (id === 'instanceof'); - default: - return false; - } - } - // ECMA-262 11.4 Comments +/***/ }, +/* 6 */ +/***/ function(module, exports) { - function addComment(type, value, start, end, loc) { - var comment; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + exports.JSXSyntax = { + JSXAttribute: 'JSXAttribute', + JSXClosingElement: 'JSXClosingElement', + JSXElement: 'JSXElement', + JSXEmptyExpression: 'JSXEmptyExpression', + JSXExpressionContainer: 'JSXExpressionContainer', + JSXIdentifier: 'JSXIdentifier', + JSXMemberExpression: 'JSXMemberExpression', + JSXNamespacedName: 'JSXNamespacedName', + JSXOpeningElement: 'JSXOpeningElement', + JSXSpreadAttribute: 'JSXSpreadAttribute', + JSXText: 'JSXText' + }; - assert(typeof start === 'number', 'Comment must have valid position'); - state.lastCommentStart = start; +/***/ }, +/* 7 */ +/***/ function(module, exports, __webpack_require__) { - comment = { - type: type, - value: value - }; - if (extra.range) { - comment.range = [start, end]; - } - if (extra.loc) { - comment.loc = loc; - } - extra.comments.push(comment); - if (extra.attachComment) { - extra.leadingComments.push(comment); - extra.trailingComments.push(comment); - } - if (extra.tokenize) { - comment.type = comment.type + 'Comment'; - if (extra.delegate) { - comment = extra.delegate(comment); - } - extra.tokens.push(comment); - } - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var syntax_1 = __webpack_require__(2); + /* tslint:disable:max-classes-per-file */ + var ArrayExpression = (function () { + function ArrayExpression(elements) { + this.type = syntax_1.Syntax.ArrayExpression; + this.elements = elements; + } + return ArrayExpression; + }()); + exports.ArrayExpression = ArrayExpression; + var ArrayPattern = (function () { + function ArrayPattern(elements) { + this.type = syntax_1.Syntax.ArrayPattern; + this.elements = elements; + } + return ArrayPattern; + }()); + exports.ArrayPattern = ArrayPattern; + var ArrowFunctionExpression = (function () { + function ArrowFunctionExpression(params, body, expression) { + this.type = syntax_1.Syntax.ArrowFunctionExpression; + this.id = null; + this.params = params; + this.body = body; + this.generator = false; + this.expression = expression; + this.async = false; + } + return ArrowFunctionExpression; + }()); + exports.ArrowFunctionExpression = ArrowFunctionExpression; + var AssignmentExpression = (function () { + function AssignmentExpression(operator, left, right) { + this.type = syntax_1.Syntax.AssignmentExpression; + this.operator = operator; + this.left = left; + this.right = right; + } + return AssignmentExpression; + }()); + exports.AssignmentExpression = AssignmentExpression; + var AssignmentPattern = (function () { + function AssignmentPattern(left, right) { + this.type = syntax_1.Syntax.AssignmentPattern; + this.left = left; + this.right = right; + } + return AssignmentPattern; + }()); + exports.AssignmentPattern = AssignmentPattern; + var AsyncArrowFunctionExpression = (function () { + function AsyncArrowFunctionExpression(params, body, expression) { + this.type = syntax_1.Syntax.ArrowFunctionExpression; + this.id = null; + this.params = params; + this.body = body; + this.generator = false; + this.expression = expression; + this.async = true; + } + return AsyncArrowFunctionExpression; + }()); + exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression; + var AsyncFunctionDeclaration = (function () { + function AsyncFunctionDeclaration(id, params, body) { + this.type = syntax_1.Syntax.FunctionDeclaration; + this.id = id; + this.params = params; + this.body = body; + this.generator = false; + this.expression = false; + this.async = true; + } + return AsyncFunctionDeclaration; + }()); + exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration; + var AsyncFunctionExpression = (function () { + function AsyncFunctionExpression(id, params, body) { + this.type = syntax_1.Syntax.FunctionExpression; + this.id = id; + this.params = params; + this.body = body; + this.generator = false; + this.expression = false; + this.async = true; + } + return AsyncFunctionExpression; + }()); + exports.AsyncFunctionExpression = AsyncFunctionExpression; + var AwaitExpression = (function () { + function AwaitExpression(argument) { + this.type = syntax_1.Syntax.AwaitExpression; + this.argument = argument; + } + return AwaitExpression; + }()); + exports.AwaitExpression = AwaitExpression; + var BinaryExpression = (function () { + function BinaryExpression(operator, left, right) { + var logical = (operator === '||' || operator === '&&'); + this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression; + this.operator = operator; + this.left = left; + this.right = right; + } + return BinaryExpression; + }()); + exports.BinaryExpression = BinaryExpression; + var BlockStatement = (function () { + function BlockStatement(body) { + this.type = syntax_1.Syntax.BlockStatement; + this.body = body; + } + return BlockStatement; + }()); + exports.BlockStatement = BlockStatement; + var BreakStatement = (function () { + function BreakStatement(label) { + this.type = syntax_1.Syntax.BreakStatement; + this.label = label; + } + return BreakStatement; + }()); + exports.BreakStatement = BreakStatement; + var CallExpression = (function () { + function CallExpression(callee, args) { + this.type = syntax_1.Syntax.CallExpression; + this.callee = callee; + this.arguments = args; + } + return CallExpression; + }()); + exports.CallExpression = CallExpression; + var CatchClause = (function () { + function CatchClause(param, body) { + this.type = syntax_1.Syntax.CatchClause; + this.param = param; + this.body = body; + } + return CatchClause; + }()); + exports.CatchClause = CatchClause; + var ClassBody = (function () { + function ClassBody(body) { + this.type = syntax_1.Syntax.ClassBody; + this.body = body; + } + return ClassBody; + }()); + exports.ClassBody = ClassBody; + var ClassDeclaration = (function () { + function ClassDeclaration(id, superClass, body) { + this.type = syntax_1.Syntax.ClassDeclaration; + this.id = id; + this.superClass = superClass; + this.body = body; + } + return ClassDeclaration; + }()); + exports.ClassDeclaration = ClassDeclaration; + var ClassExpression = (function () { + function ClassExpression(id, superClass, body) { + this.type = syntax_1.Syntax.ClassExpression; + this.id = id; + this.superClass = superClass; + this.body = body; + } + return ClassExpression; + }()); + exports.ClassExpression = ClassExpression; + var ComputedMemberExpression = (function () { + function ComputedMemberExpression(object, property) { + this.type = syntax_1.Syntax.MemberExpression; + this.computed = true; + this.object = object; + this.property = property; + } + return ComputedMemberExpression; + }()); + exports.ComputedMemberExpression = ComputedMemberExpression; + var ConditionalExpression = (function () { + function ConditionalExpression(test, consequent, alternate) { + this.type = syntax_1.Syntax.ConditionalExpression; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + } + return ConditionalExpression; + }()); + exports.ConditionalExpression = ConditionalExpression; + var ContinueStatement = (function () { + function ContinueStatement(label) { + this.type = syntax_1.Syntax.ContinueStatement; + this.label = label; + } + return ContinueStatement; + }()); + exports.ContinueStatement = ContinueStatement; + var DebuggerStatement = (function () { + function DebuggerStatement() { + this.type = syntax_1.Syntax.DebuggerStatement; + } + return DebuggerStatement; + }()); + exports.DebuggerStatement = DebuggerStatement; + var Directive = (function () { + function Directive(expression, directive) { + this.type = syntax_1.Syntax.ExpressionStatement; + this.expression = expression; + this.directive = directive; + } + return Directive; + }()); + exports.Directive = Directive; + var DoWhileStatement = (function () { + function DoWhileStatement(body, test) { + this.type = syntax_1.Syntax.DoWhileStatement; + this.body = body; + this.test = test; + } + return DoWhileStatement; + }()); + exports.DoWhileStatement = DoWhileStatement; + var EmptyStatement = (function () { + function EmptyStatement() { + this.type = syntax_1.Syntax.EmptyStatement; + } + return EmptyStatement; + }()); + exports.EmptyStatement = EmptyStatement; + var ExportAllDeclaration = (function () { + function ExportAllDeclaration(source) { + this.type = syntax_1.Syntax.ExportAllDeclaration; + this.source = source; + } + return ExportAllDeclaration; + }()); + exports.ExportAllDeclaration = ExportAllDeclaration; + var ExportDefaultDeclaration = (function () { + function ExportDefaultDeclaration(declaration) { + this.type = syntax_1.Syntax.ExportDefaultDeclaration; + this.declaration = declaration; + } + return ExportDefaultDeclaration; + }()); + exports.ExportDefaultDeclaration = ExportDefaultDeclaration; + var ExportNamedDeclaration = (function () { + function ExportNamedDeclaration(declaration, specifiers, source) { + this.type = syntax_1.Syntax.ExportNamedDeclaration; + this.declaration = declaration; + this.specifiers = specifiers; + this.source = source; + } + return ExportNamedDeclaration; + }()); + exports.ExportNamedDeclaration = ExportNamedDeclaration; + var ExportSpecifier = (function () { + function ExportSpecifier(local, exported) { + this.type = syntax_1.Syntax.ExportSpecifier; + this.exported = exported; + this.local = local; + } + return ExportSpecifier; + }()); + exports.ExportSpecifier = ExportSpecifier; + var ExpressionStatement = (function () { + function ExpressionStatement(expression) { + this.type = syntax_1.Syntax.ExpressionStatement; + this.expression = expression; + } + return ExpressionStatement; + }()); + exports.ExpressionStatement = ExpressionStatement; + var ForInStatement = (function () { + function ForInStatement(left, right, body) { + this.type = syntax_1.Syntax.ForInStatement; + this.left = left; + this.right = right; + this.body = body; + this.each = false; + } + return ForInStatement; + }()); + exports.ForInStatement = ForInStatement; + var ForOfStatement = (function () { + function ForOfStatement(left, right, body) { + this.type = syntax_1.Syntax.ForOfStatement; + this.left = left; + this.right = right; + this.body = body; + } + return ForOfStatement; + }()); + exports.ForOfStatement = ForOfStatement; + var ForStatement = (function () { + function ForStatement(init, test, update, body) { + this.type = syntax_1.Syntax.ForStatement; + this.init = init; + this.test = test; + this.update = update; + this.body = body; + } + return ForStatement; + }()); + exports.ForStatement = ForStatement; + var FunctionDeclaration = (function () { + function FunctionDeclaration(id, params, body, generator) { + this.type = syntax_1.Syntax.FunctionDeclaration; + this.id = id; + this.params = params; + this.body = body; + this.generator = generator; + this.expression = false; + this.async = false; + } + return FunctionDeclaration; + }()); + exports.FunctionDeclaration = FunctionDeclaration; + var FunctionExpression = (function () { + function FunctionExpression(id, params, body, generator) { + this.type = syntax_1.Syntax.FunctionExpression; + this.id = id; + this.params = params; + this.body = body; + this.generator = generator; + this.expression = false; + this.async = false; + } + return FunctionExpression; + }()); + exports.FunctionExpression = FunctionExpression; + var Identifier = (function () { + function Identifier(name) { + this.type = syntax_1.Syntax.Identifier; + this.name = name; + } + return Identifier; + }()); + exports.Identifier = Identifier; + var IfStatement = (function () { + function IfStatement(test, consequent, alternate) { + this.type = syntax_1.Syntax.IfStatement; + this.test = test; + this.consequent = consequent; + this.alternate = alternate; + } + return IfStatement; + }()); + exports.IfStatement = IfStatement; + var ImportDeclaration = (function () { + function ImportDeclaration(specifiers, source) { + this.type = syntax_1.Syntax.ImportDeclaration; + this.specifiers = specifiers; + this.source = source; + } + return ImportDeclaration; + }()); + exports.ImportDeclaration = ImportDeclaration; + var ImportDefaultSpecifier = (function () { + function ImportDefaultSpecifier(local) { + this.type = syntax_1.Syntax.ImportDefaultSpecifier; + this.local = local; + } + return ImportDefaultSpecifier; + }()); + exports.ImportDefaultSpecifier = ImportDefaultSpecifier; + var ImportNamespaceSpecifier = (function () { + function ImportNamespaceSpecifier(local) { + this.type = syntax_1.Syntax.ImportNamespaceSpecifier; + this.local = local; + } + return ImportNamespaceSpecifier; + }()); + exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier; + var ImportSpecifier = (function () { + function ImportSpecifier(local, imported) { + this.type = syntax_1.Syntax.ImportSpecifier; + this.local = local; + this.imported = imported; + } + return ImportSpecifier; + }()); + exports.ImportSpecifier = ImportSpecifier; + var LabeledStatement = (function () { + function LabeledStatement(label, body) { + this.type = syntax_1.Syntax.LabeledStatement; + this.label = label; + this.body = body; + } + return LabeledStatement; + }()); + exports.LabeledStatement = LabeledStatement; + var Literal = (function () { + function Literal(value, raw) { + this.type = syntax_1.Syntax.Literal; + this.value = value; + this.raw = raw; + } + return Literal; + }()); + exports.Literal = Literal; + var MetaProperty = (function () { + function MetaProperty(meta, property) { + this.type = syntax_1.Syntax.MetaProperty; + this.meta = meta; + this.property = property; + } + return MetaProperty; + }()); + exports.MetaProperty = MetaProperty; + var MethodDefinition = (function () { + function MethodDefinition(key, computed, value, kind, isStatic) { + this.type = syntax_1.Syntax.MethodDefinition; + this.key = key; + this.computed = computed; + this.value = value; + this.kind = kind; + this.static = isStatic; + } + return MethodDefinition; + }()); + exports.MethodDefinition = MethodDefinition; + var Module = (function () { + function Module(body) { + this.type = syntax_1.Syntax.Program; + this.body = body; + this.sourceType = 'module'; + } + return Module; + }()); + exports.Module = Module; + var NewExpression = (function () { + function NewExpression(callee, args) { + this.type = syntax_1.Syntax.NewExpression; + this.callee = callee; + this.arguments = args; + } + return NewExpression; + }()); + exports.NewExpression = NewExpression; + var ObjectExpression = (function () { + function ObjectExpression(properties) { + this.type = syntax_1.Syntax.ObjectExpression; + this.properties = properties; + } + return ObjectExpression; + }()); + exports.ObjectExpression = ObjectExpression; + var ObjectPattern = (function () { + function ObjectPattern(properties) { + this.type = syntax_1.Syntax.ObjectPattern; + this.properties = properties; + } + return ObjectPattern; + }()); + exports.ObjectPattern = ObjectPattern; + var Property = (function () { + function Property(kind, key, computed, value, method, shorthand) { + this.type = syntax_1.Syntax.Property; + this.key = key; + this.computed = computed; + this.value = value; + this.kind = kind; + this.method = method; + this.shorthand = shorthand; + } + return Property; + }()); + exports.Property = Property; + var RegexLiteral = (function () { + function RegexLiteral(value, raw, pattern, flags) { + this.type = syntax_1.Syntax.Literal; + this.value = value; + this.raw = raw; + this.regex = { pattern: pattern, flags: flags }; + } + return RegexLiteral; + }()); + exports.RegexLiteral = RegexLiteral; + var RestElement = (function () { + function RestElement(argument) { + this.type = syntax_1.Syntax.RestElement; + this.argument = argument; + } + return RestElement; + }()); + exports.RestElement = RestElement; + var ReturnStatement = (function () { + function ReturnStatement(argument) { + this.type = syntax_1.Syntax.ReturnStatement; + this.argument = argument; + } + return ReturnStatement; + }()); + exports.ReturnStatement = ReturnStatement; + var Script = (function () { + function Script(body) { + this.type = syntax_1.Syntax.Program; + this.body = body; + this.sourceType = 'script'; + } + return Script; + }()); + exports.Script = Script; + var SequenceExpression = (function () { + function SequenceExpression(expressions) { + this.type = syntax_1.Syntax.SequenceExpression; + this.expressions = expressions; + } + return SequenceExpression; + }()); + exports.SequenceExpression = SequenceExpression; + var SpreadElement = (function () { + function SpreadElement(argument) { + this.type = syntax_1.Syntax.SpreadElement; + this.argument = argument; + } + return SpreadElement; + }()); + exports.SpreadElement = SpreadElement; + var StaticMemberExpression = (function () { + function StaticMemberExpression(object, property) { + this.type = syntax_1.Syntax.MemberExpression; + this.computed = false; + this.object = object; + this.property = property; + } + return StaticMemberExpression; + }()); + exports.StaticMemberExpression = StaticMemberExpression; + var Super = (function () { + function Super() { + this.type = syntax_1.Syntax.Super; + } + return Super; + }()); + exports.Super = Super; + var SwitchCase = (function () { + function SwitchCase(test, consequent) { + this.type = syntax_1.Syntax.SwitchCase; + this.test = test; + this.consequent = consequent; + } + return SwitchCase; + }()); + exports.SwitchCase = SwitchCase; + var SwitchStatement = (function () { + function SwitchStatement(discriminant, cases) { + this.type = syntax_1.Syntax.SwitchStatement; + this.discriminant = discriminant; + this.cases = cases; + } + return SwitchStatement; + }()); + exports.SwitchStatement = SwitchStatement; + var TaggedTemplateExpression = (function () { + function TaggedTemplateExpression(tag, quasi) { + this.type = syntax_1.Syntax.TaggedTemplateExpression; + this.tag = tag; + this.quasi = quasi; + } + return TaggedTemplateExpression; + }()); + exports.TaggedTemplateExpression = TaggedTemplateExpression; + var TemplateElement = (function () { + function TemplateElement(value, tail) { + this.type = syntax_1.Syntax.TemplateElement; + this.value = value; + this.tail = tail; + } + return TemplateElement; + }()); + exports.TemplateElement = TemplateElement; + var TemplateLiteral = (function () { + function TemplateLiteral(quasis, expressions) { + this.type = syntax_1.Syntax.TemplateLiteral; + this.quasis = quasis; + this.expressions = expressions; + } + return TemplateLiteral; + }()); + exports.TemplateLiteral = TemplateLiteral; + var ThisExpression = (function () { + function ThisExpression() { + this.type = syntax_1.Syntax.ThisExpression; + } + return ThisExpression; + }()); + exports.ThisExpression = ThisExpression; + var ThrowStatement = (function () { + function ThrowStatement(argument) { + this.type = syntax_1.Syntax.ThrowStatement; + this.argument = argument; + } + return ThrowStatement; + }()); + exports.ThrowStatement = ThrowStatement; + var TryStatement = (function () { + function TryStatement(block, handler, finalizer) { + this.type = syntax_1.Syntax.TryStatement; + this.block = block; + this.handler = handler; + this.finalizer = finalizer; + } + return TryStatement; + }()); + exports.TryStatement = TryStatement; + var UnaryExpression = (function () { + function UnaryExpression(operator, argument) { + this.type = syntax_1.Syntax.UnaryExpression; + this.operator = operator; + this.argument = argument; + this.prefix = true; + } + return UnaryExpression; + }()); + exports.UnaryExpression = UnaryExpression; + var UpdateExpression = (function () { + function UpdateExpression(operator, argument, prefix) { + this.type = syntax_1.Syntax.UpdateExpression; + this.operator = operator; + this.argument = argument; + this.prefix = prefix; + } + return UpdateExpression; + }()); + exports.UpdateExpression = UpdateExpression; + var VariableDeclaration = (function () { + function VariableDeclaration(declarations, kind) { + this.type = syntax_1.Syntax.VariableDeclaration; + this.declarations = declarations; + this.kind = kind; + } + return VariableDeclaration; + }()); + exports.VariableDeclaration = VariableDeclaration; + var VariableDeclarator = (function () { + function VariableDeclarator(id, init) { + this.type = syntax_1.Syntax.VariableDeclarator; + this.id = id; + this.init = init; + } + return VariableDeclarator; + }()); + exports.VariableDeclarator = VariableDeclarator; + var WhileStatement = (function () { + function WhileStatement(test, body) { + this.type = syntax_1.Syntax.WhileStatement; + this.test = test; + this.body = body; + } + return WhileStatement; + }()); + exports.WhileStatement = WhileStatement; + var WithStatement = (function () { + function WithStatement(object, body) { + this.type = syntax_1.Syntax.WithStatement; + this.object = object; + this.body = body; + } + return WithStatement; + }()); + exports.WithStatement = WithStatement; + var YieldExpression = (function () { + function YieldExpression(argument, delegate) { + this.type = syntax_1.Syntax.YieldExpression; + this.argument = argument; + this.delegate = delegate; + } + return YieldExpression; + }()); + exports.YieldExpression = YieldExpression; - function skipSingleLineComment(offset) { - var start, loc, ch, comment; - start = index - offset; - loc = { - start: { - line: lineNumber, - column: index - lineStart - offset - } - }; +/***/ }, +/* 8 */ +/***/ function(module, exports, __webpack_require__) { - while (index < length) { - ch = source.charCodeAt(index); - ++index; - if (isLineTerminator(ch)) { - hasLineTerminator = true; - if (extra.comments) { - comment = source.slice(start + offset, index - 1); - loc.end = { - line: lineNumber, - column: index - lineStart - 1 - }; - addComment('Line', comment, start, index - 1, loc); - } - if (ch === 13 && source.charCodeAt(index) === 10) { - ++index; - } - ++lineNumber; - lineStart = index; - return; - } - } - - if (extra.comments) { - comment = source.slice(start + offset, index); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - addComment('Line', comment, start, index, loc); - } - } - - function skipMultiLineComment() { - var start, loc, ch, comment; - - if (extra.comments) { - start = index - 2; - loc = { - start: { - line: lineNumber, - column: index - lineStart - 2 - } - }; - } - - while (index < length) { - ch = source.charCodeAt(index); - if (isLineTerminator(ch)) { - if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) { - ++index; - } - hasLineTerminator = true; - ++lineNumber; - ++index; - lineStart = index; - } else if (ch === 0x2A) { - // Block comment ends with '*/'. - if (source.charCodeAt(index + 1) === 0x2F) { - ++index; - ++index; - if (extra.comments) { - comment = source.slice(start + 2, index - 2); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - addComment('Block', comment, start, index, loc); - } - return; - } - ++index; - } else { - ++index; - } - } - - // Ran off the end of the file - the whole thing is a comment - if (extra.comments) { - loc.end = { - line: lineNumber, - column: index - lineStart - }; - comment = source.slice(start + 2, index); - addComment('Block', comment, start, index, loc); - } - tolerateUnexpectedToken(); - } - - function skipComment() { - var ch, start; - hasLineTerminator = false; - - start = (index === 0); - while (index < length) { - ch = source.charCodeAt(index); - - if (isWhiteSpace(ch)) { - ++index; - } else if (isLineTerminator(ch)) { - hasLineTerminator = true; - ++index; - if (ch === 0x0D && source.charCodeAt(index) === 0x0A) { - ++index; - } - ++lineNumber; - lineStart = index; - start = true; - } else if (ch === 0x2F) { // U+002F is '/' - ch = source.charCodeAt(index + 1); - if (ch === 0x2F) { - ++index; - ++index; - skipSingleLineComment(2); - start = true; - } else if (ch === 0x2A) { // U+002A is '*' - ++index; - ++index; - skipMultiLineComment(); - } else { - break; - } - } else if (start && ch === 0x2D) { // U+002D is '-' - // U+003E is '>' - if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) { - // '-->' is a single-line comment - index += 3; - skipSingleLineComment(3); - } else { - break; - } - } else if (ch === 0x3C) { // U+003C is '<' - if (source.slice(index + 1, index + 4) === '!--') { - ++index; // `<` - ++index; // `!` - ++index; // `-` - ++index; // `-` - skipSingleLineComment(4); - } else { - break; - } - } else { - break; - } - } - } - - function scanHexEscape(prefix) { - var i, len, ch, code = 0; - - len = (prefix === 'u') ? 4 : 2; - for (i = 0; i < len; ++i) { - if (index < length && isHexDigit(source[index])) { - ch = source[index++]; - code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); - } else { - return ''; - } - } - return String.fromCharCode(code); - } - - function scanUnicodeCodePointEscape() { - var ch, code; - - ch = source[index]; - code = 0; - - // At least, one hex digit is required. - if (ch === '}') { - throwUnexpectedToken(); - } - - while (index < length) { - ch = source[index++]; - if (!isHexDigit(ch)) { - break; - } - code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase()); - } - - if (code > 0x10FFFF || ch !== '}') { - throwUnexpectedToken(); - } - - return fromCodePoint(code); - } - - function codePointAt(i) { - var cp, first, second; - - cp = source.charCodeAt(i); - if (cp >= 0xD800 && cp <= 0xDBFF) { - second = source.charCodeAt(i + 1); - if (second >= 0xDC00 && second <= 0xDFFF) { - first = cp; - cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; - } - } - - return cp; - } - - function getComplexIdentifier() { - var cp, ch, id; - - cp = codePointAt(index); - id = fromCodePoint(cp); - index += id.length; - - // '\u' (U+005C, U+0075) denotes an escaped character. - if (cp === 0x5C) { - if (source.charCodeAt(index) !== 0x75) { - throwUnexpectedToken(); - } - ++index; - if (source[index] === '{') { - ++index; - ch = scanUnicodeCodePointEscape(); - } else { - ch = scanHexEscape('u'); - cp = ch.charCodeAt(0); - if (!ch || ch === '\\' || !isIdentifierStart(cp)) { - throwUnexpectedToken(); - } - } - id = ch; - } - - while (index < length) { - cp = codePointAt(index); - if (!isIdentifierPart(cp)) { - break; - } - ch = fromCodePoint(cp); - id += ch; - index += ch.length; - - // '\u' (U+005C, U+0075) denotes an escaped character. - if (cp === 0x5C) { - id = id.substr(0, id.length - 1); - if (source.charCodeAt(index) !== 0x75) { - throwUnexpectedToken(); - } - ++index; - if (source[index] === '{') { - ++index; - ch = scanUnicodeCodePointEscape(); - } else { - ch = scanHexEscape('u'); - cp = ch.charCodeAt(0); - if (!ch || ch === '\\' || !isIdentifierPart(cp)) { - throwUnexpectedToken(); - } - } - id += ch; - } - } - - return id; - } - - function getIdentifier() { - var start, ch; - - start = index++; - while (index < length) { - ch = source.charCodeAt(index); - if (ch === 0x5C) { - // Blackslash (U+005C) marks Unicode escape sequence. - index = start; - return getComplexIdentifier(); - } else if (ch >= 0xD800 && ch < 0xDFFF) { - // Need to handle surrogate pairs. - index = start; - return getComplexIdentifier(); - } - if (isIdentifierPart(ch)) { - ++index; - } else { - break; - } - } - - return source.slice(start, index); - } - - function scanIdentifier() { - var start, id, type; - - start = index; - - // Backslash (U+005C) starts an escaped character. - id = (source.charCodeAt(index) === 0x5C) ? getComplexIdentifier() : getIdentifier(); - - // There is no keyword or literal with only one character. - // Thus, it must be an identifier. - if (id.length === 1) { - type = Token.Identifier; - } else if (isKeyword(id)) { - type = Token.Keyword; - } else if (id === 'null') { - type = Token.NullLiteral; - } else if (id === 'true' || id === 'false') { - type = Token.BooleanLiteral; - } else { - type = Token.Identifier; - } - - return { - type: type, - value: id, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - - // ECMA-262 11.7 Punctuators - - function scanPunctuator() { - var token, str; - - token = { - type: Token.Punctuator, - value: '', - lineNumber: lineNumber, - lineStart: lineStart, - start: index, - end: index - }; - - // Check for most common single-character punctuators. - str = source[index]; - switch (str) { - - case '(': - if (extra.tokenize) { - extra.openParenToken = extra.tokenValues.length; - } - ++index; - break; - - case '{': - if (extra.tokenize) { - extra.openCurlyToken = extra.tokenValues.length; - } - state.curlyStack.push('{'); - ++index; - break; - - case '.': - ++index; - if (source[index] === '.' && source[index + 1] === '.') { - // Spread operator: ... - index += 2; - str = '...'; - } - break; - - case '}': - ++index; - state.curlyStack.pop(); - break; - case ')': - case ';': - case ',': - case '[': - case ']': - case ':': - case '?': - case '~': - ++index; - break; - - default: - // 4-character punctuator. - str = source.substr(index, 4); - if (str === '>>>=') { - index += 4; - } else { - - // 3-character punctuators. - str = str.substr(0, 3); - if (str === '===' || str === '!==' || str === '>>>' || - str === '<<=' || str === '>>=') { - index += 3; - } else { - - // 2-character punctuators. - str = str.substr(0, 2); - if (str === '&&' || str === '||' || str === '==' || str === '!=' || - str === '+=' || str === '-=' || str === '*=' || str === '/=' || - str === '++' || str === '--' || str === '<<' || str === '>>' || - str === '&=' || str === '|=' || str === '^=' || str === '%=' || - str === '<=' || str === '>=' || str === '=>') { - index += 2; - } else { - - // 1-character punctuators. - str = source[index]; - if ('<>=!+-*%&|^/'.indexOf(str) >= 0) { - ++index; - } - } - } - } - } - - if (index === token.start) { - throwUnexpectedToken(); - } - - token.end = index; - token.value = str; - return token; - } - - // ECMA-262 11.8.3 Numeric Literals - - function scanHexLiteral(start) { - var number = ''; - - while (index < length) { - if (!isHexDigit(source[index])) { - break; - } - number += source[index++]; - } - - if (number.length === 0) { - throwUnexpectedToken(); - } - - if (isIdentifierStart(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseInt('0x' + number, 16), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function scanBinaryLiteral(start) { - var ch, number; - - number = ''; - - while (index < length) { - ch = source[index]; - if (ch !== '0' && ch !== '1') { - break; - } - number += source[index++]; - } - - if (number.length === 0) { - // only 0b or 0B - throwUnexpectedToken(); - } - - if (index < length) { - ch = source.charCodeAt(index); - /* istanbul ignore else */ - if (isIdentifierStart(ch) || isDecimalDigit(ch)) { - throwUnexpectedToken(); - } - } - - return { - type: Token.NumericLiteral, - value: parseInt(number, 2), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function scanOctalLiteral(prefix, start) { - var number, octal; - - if (isOctalDigit(prefix)) { - octal = true; - number = '0' + source[index++]; - } else { - octal = false; - ++index; - number = ''; - } - - while (index < length) { - if (!isOctalDigit(source[index])) { - break; - } - number += source[index++]; - } - - if (!octal && number.length === 0) { - // only 0o or 0O - throwUnexpectedToken(); - } - - if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseInt(number, 8), - octal: octal, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - function isImplicitOctalLiteral() { - var i, ch; - - // Implicit octal, unless there is a non-octal digit. - // (Annex B.1.1 on Numeric Literals) - for (i = index + 1; i < length; ++i) { - ch = source[i]; - if (ch === '8' || ch === '9') { - return false; - } - if (!isOctalDigit(ch)) { - return true; - } - } - - return true; - } - - function scanNumericLiteral() { - var number, start, ch; - - ch = source[index]; - assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'), - 'Numeric literal must start with a decimal digit or a decimal point'); - - start = index; - number = ''; - if (ch !== '.') { - number = source[index++]; - ch = source[index]; - - // Hex number starts with '0x'. - // Octal number starts with '0'. - // Octal number in ES6 starts with '0o'. - // Binary number in ES6 starts with '0b'. - if (number === '0') { - if (ch === 'x' || ch === 'X') { - ++index; - return scanHexLiteral(start); - } - if (ch === 'b' || ch === 'B') { - ++index; - return scanBinaryLiteral(start); - } - if (ch === 'o' || ch === 'O') { - return scanOctalLiteral(ch, start); - } - - if (isOctalDigit(ch)) { - if (isImplicitOctalLiteral()) { - return scanOctalLiteral(ch, start); - } - } - } - - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - ch = source[index]; - } - - if (ch === '.') { - number += source[index++]; - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - ch = source[index]; - } - - if (ch === 'e' || ch === 'E') { - number += source[index++]; - - ch = source[index]; - if (ch === '+' || ch === '-') { - number += source[index++]; - } - if (isDecimalDigit(source.charCodeAt(index))) { - while (isDecimalDigit(source.charCodeAt(index))) { - number += source[index++]; - } - } else { - throwUnexpectedToken(); - } - } - - if (isIdentifierStart(source.charCodeAt(index))) { - throwUnexpectedToken(); - } - - return { - type: Token.NumericLiteral, - value: parseFloat(number), - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.4 String Literals - - function scanStringLiteral() { - var str = '', quote, start, ch, unescaped, octToDec, octal = false; - - quote = source[index]; - assert((quote === '\'' || quote === '"'), - 'String literal must starts with a quote'); - - start = index; - ++index; - - while (index < length) { - ch = source[index++]; - - if (ch === quote) { - quote = ''; - break; - } else if (ch === '\\') { - ch = source[index++]; - if (!ch || !isLineTerminator(ch.charCodeAt(0))) { - switch (ch) { - case 'u': - case 'x': - if (source[index] === '{') { - ++index; - str += scanUnicodeCodePointEscape(); - } else { - unescaped = scanHexEscape(ch); - if (!unescaped) { - throw throwUnexpectedToken(); - } - str += unescaped; - } - break; - case 'n': - str += '\n'; - break; - case 'r': - str += '\r'; - break; - case 't': - str += '\t'; - break; - case 'b': - str += '\b'; - break; - case 'f': - str += '\f'; - break; - case 'v': - str += '\x0B'; - break; - case '8': - case '9': - str += ch; - tolerateUnexpectedToken(); - break; - - default: - if (isOctalDigit(ch)) { - octToDec = octalToDecimal(ch); - - octal = octToDec.octal || octal; - str += String.fromCharCode(octToDec.code); - } else { - str += ch; - } - break; - } - } else { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - } - } else if (isLineTerminator(ch.charCodeAt(0))) { - break; - } else { - str += ch; - } - } - - if (quote !== '') { - throwUnexpectedToken(); - } - - return { - type: Token.StringLiteral, - value: str, - octal: octal, - lineNumber: startLineNumber, - lineStart: startLineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.6 Template Literal Lexical Components - - function scanTemplate() { - var cooked = '', ch, start, rawOffset, terminated, head, tail, restore, unescaped; - - terminated = false; - tail = false; - start = index; - head = (source[index] === '`'); - rawOffset = 2; - - ++index; - - while (index < length) { - ch = source[index++]; - if (ch === '`') { - rawOffset = 1; - tail = true; - terminated = true; - break; - } else if (ch === '$') { - if (source[index] === '{') { - state.curlyStack.push('${'); - ++index; - terminated = true; - break; - } - cooked += ch; - } else if (ch === '\\') { - ch = source[index++]; - if (!isLineTerminator(ch.charCodeAt(0))) { - switch (ch) { - case 'n': - cooked += '\n'; - break; - case 'r': - cooked += '\r'; - break; - case 't': - cooked += '\t'; - break; - case 'u': - case 'x': - if (source[index] === '{') { - ++index; - cooked += scanUnicodeCodePointEscape(); - } else { - restore = index; - unescaped = scanHexEscape(ch); - if (unescaped) { - cooked += unescaped; - } else { - index = restore; - cooked += ch; - } - } - break; - case 'b': - cooked += '\b'; - break; - case 'f': - cooked += '\f'; - break; - case 'v': - cooked += '\v'; - break; - - default: - if (ch === '0') { - if (isDecimalDigit(source.charCodeAt(index))) { - // Illegal: \01 \02 and so on - throwError(Messages.TemplateOctalLiteral); - } - cooked += '\0'; - } else if (isOctalDigit(ch)) { - // Illegal: \1 \2 - throwError(Messages.TemplateOctalLiteral); - } else { - cooked += ch; - } - break; - } - } else { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - } - } else if (isLineTerminator(ch.charCodeAt(0))) { - ++lineNumber; - if (ch === '\r' && source[index] === '\n') { - ++index; - } - lineStart = index; - cooked += '\n'; - } else { - cooked += ch; - } - } - - if (!terminated) { - throwUnexpectedToken(); - } - - if (!head) { - state.curlyStack.pop(); - } - - return { - type: Token.Template, - value: { - cooked: cooked, - raw: source.slice(start + 1, index - rawOffset) - }, - head: head, - tail: tail, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - // ECMA-262 11.8.5 Regular Expression Literals - - function testRegExp(pattern, flags) { - // The BMP character to use as a replacement for astral symbols when - // translating an ES6 "u"-flagged pattern to an ES5-compatible - // approximation. - // Note: replacing with '\uFFFF' enables false positives in unlikely - // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid - // pattern that would not be detected by this substitution. - var astralSubstitute = '\uFFFF', - tmp = pattern; - - if (flags.indexOf('u') >= 0) { - tmp = tmp - // Replace every Unicode escape sequence with the equivalent - // BMP character or a constant ASCII code point in the case of - // astral symbols. (See the above note on `astralSubstitute` - // for more information.) - .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function ($0, $1, $2) { - var codePoint = parseInt($1 || $2, 16); - if (codePoint > 0x10FFFF) { - throwUnexpectedToken(null, Messages.InvalidRegExp); - } - if (codePoint <= 0xFFFF) { - return String.fromCharCode(codePoint); - } - return astralSubstitute; - }) - // Replace each paired surrogate with a single ASCII symbol to - // avoid throwing on regular expressions that are only valid in - // combination with the "u" flag. - .replace( - /[\uD800-\uDBFF][\uDC00-\uDFFF]/g, - astralSubstitute - ); - } - - // First, detect invalid regular expressions. - try { - RegExp(tmp); - } catch (e) { - throwUnexpectedToken(null, Messages.InvalidRegExp); - } - - // Return a regular expression object for this pattern-flag pair, or - // `null` in case the current environment doesn't support the flags it - // uses. - try { - return new RegExp(pattern, flags); - } catch (exception) { - return null; - } - } - - function scanRegExpBody() { - var ch, str, classMarker, terminated, body; - - ch = source[index]; - assert(ch === '/', 'Regular expression literal must start with a slash'); - str = source[index++]; - - classMarker = false; - terminated = false; - while (index < length) { - ch = source[index++]; - str += ch; - if (ch === '\\') { - ch = source[index++]; - // ECMA-262 7.8.5 - if (isLineTerminator(ch.charCodeAt(0))) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } - str += ch; - } else if (isLineTerminator(ch.charCodeAt(0))) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } else if (classMarker) { - if (ch === ']') { - classMarker = false; - } - } else { - if (ch === '/') { - terminated = true; - break; - } else if (ch === '[') { - classMarker = true; - } - } - } - - if (!terminated) { - throwUnexpectedToken(null, Messages.UnterminatedRegExp); - } - - // Exclude leading and trailing slash. - body = str.substr(1, str.length - 2); - return { - value: body, - literal: str - }; - } - - function scanRegExpFlags() { - var ch, str, flags, restore; - - str = ''; - flags = ''; - while (index < length) { - ch = source[index]; - if (!isIdentifierPart(ch.charCodeAt(0))) { - break; - } - - ++index; - if (ch === '\\' && index < length) { - ch = source[index]; - if (ch === 'u') { - ++index; - restore = index; - ch = scanHexEscape('u'); - if (ch) { - flags += ch; - for (str += '\\u'; restore < index; ++restore) { - str += source[restore]; - } - } else { - index = restore; - flags += 'u'; - str += '\\u'; - } - tolerateUnexpectedToken(); - } else { - str += '\\'; - tolerateUnexpectedToken(); - } - } else { - flags += ch; - str += ch; - } - } - - return { - value: flags, - literal: str - }; - } - - function scanRegExp() { - var start, body, flags, value; - scanning = true; - - lookahead = null; - skipComment(); - start = index; - - body = scanRegExpBody(); - flags = scanRegExpFlags(); - value = testRegExp(body.value, flags.value); - scanning = false; - if (extra.tokenize) { - return { - type: Token.RegularExpression, - value: value, - regex: { - pattern: body.value, - flags: flags.value - }, - lineNumber: lineNumber, - lineStart: lineStart, - start: start, - end: index - }; - } - - return { - literal: body.literal + flags.literal, - value: value, - regex: { - pattern: body.value, - flags: flags.value - }, - start: start, - end: index - }; - } - - function collectRegex() { - var pos, loc, regex, token; - - skipComment(); - - pos = index; - loc = { - start: { - line: lineNumber, - column: index - lineStart - } - }; - - regex = scanRegExp(); - - loc.end = { - line: lineNumber, - column: index - lineStart - }; - - /* istanbul ignore next */ - if (!extra.tokenize) { - // Pop the previous token, which is likely '/' or '/=' - if (extra.tokens.length > 0) { - token = extra.tokens[extra.tokens.length - 1]; - if (token.range[0] === pos && token.type === 'Punctuator') { - if (token.value === '/' || token.value === '/=') { - extra.tokens.pop(); - } - } - } - - extra.tokens.push({ - type: 'RegularExpression', - value: regex.literal, - regex: regex.regex, - range: [pos, index], - loc: loc - }); - } - - return regex; - } - - function isIdentifierName(token) { - return token.type === Token.Identifier || - token.type === Token.Keyword || - token.type === Token.BooleanLiteral || - token.type === Token.NullLiteral; - } - - // Using the following algorithm: - // https://github.com/mozilla/sweet.js/wiki/design - - function advanceSlash() { - var regex, previous, check; - - function testKeyword(value) { - return value && (value.length > 1) && (value[0] >= 'a') && (value[0] <= 'z'); - } - - previous = extra.tokenValues[extra.tokens.length - 1]; - regex = (previous !== null); - - switch (previous) { - case 'this': - case ']': - regex = false; - break; - - case ')': - check = extra.tokenValues[extra.openParenToken - 1]; - regex = (check === 'if' || check === 'while' || check === 'for' || check === 'with'); - break; - - case '}': - // Dividing a function by anything makes little sense, - // but we have to check for that. - regex = false; - if (testKeyword(extra.tokenValues[extra.openCurlyToken - 3])) { - // Anonymous function, e.g. function(){} /42 - check = extra.tokenValues[extra.openCurlyToken - 4]; - regex = check ? (FnExprTokens.indexOf(check) < 0) : false; - } else if (testKeyword(extra.tokenValues[extra.openCurlyToken - 4])) { - // Named function, e.g. function f(){} /42/ - check = extra.tokenValues[extra.openCurlyToken - 5]; - regex = check ? (FnExprTokens.indexOf(check) < 0) : true; - } - } - - return regex ? collectRegex() : scanPunctuator(); - } - - function advance() { - var cp, token; - - if (index >= length) { - return { - type: Token.EOF, - lineNumber: lineNumber, - lineStart: lineStart, - start: index, - end: index - }; - } - - cp = source.charCodeAt(index); - - if (isIdentifierStart(cp)) { - token = scanIdentifier(); - if (strict && isStrictModeReservedWord(token.value)) { - token.type = Token.Keyword; - } - return token; - } - - // Very common: ( and ) and ; - if (cp === 0x28 || cp === 0x29 || cp === 0x3B) { - return scanPunctuator(); - } - - // String literal starts with single quote (U+0027) or double quote (U+0022). - if (cp === 0x27 || cp === 0x22) { - return scanStringLiteral(); - } - - // Dot (.) U+002E can also start a floating-point number, hence the need - // to check the next character. - if (cp === 0x2E) { - if (isDecimalDigit(source.charCodeAt(index + 1))) { - return scanNumericLiteral(); - } - return scanPunctuator(); - } - - if (isDecimalDigit(cp)) { - return scanNumericLiteral(); - } - - // Slash (/) U+002F can also start a regex. - if (extra.tokenize && cp === 0x2F) { - return advanceSlash(); - } - - // Template literals start with ` (U+0060) for template head - // or } (U+007D) for template middle or template tail. - if (cp === 0x60 || (cp === 0x7D && state.curlyStack[state.curlyStack.length - 1] === '${')) { - return scanTemplate(); - } - - // Possible identifier start in a surrogate pair. - if (cp >= 0xD800 && cp < 0xDFFF) { - cp = codePointAt(index); - if (isIdentifierStart(cp)) { - return scanIdentifier(); - } - } - - return scanPunctuator(); - } - - function collectToken() { - var loc, token, value, entry; - - loc = { - start: { - line: lineNumber, - column: index - lineStart - } - }; - - token = advance(); - loc.end = { - line: lineNumber, - column: index - lineStart - }; - - if (token.type !== Token.EOF) { - value = source.slice(token.start, token.end); - entry = { - type: TokenName[token.type], - value: value, - range: [token.start, token.end], - loc: loc - }; - if (token.regex) { - entry.regex = { - pattern: token.regex.pattern, - flags: token.regex.flags - }; - } - if (extra.tokenValues) { - extra.tokenValues.push((entry.type === 'Punctuator' || entry.type === 'Keyword') ? entry.value : null); - } - if (extra.tokenize) { - if (!extra.range) { - delete entry.range; - } - if (!extra.loc) { - delete entry.loc; - } - if (extra.delegate) { - entry = extra.delegate(entry); - } - } - extra.tokens.push(entry); - } - - return token; - } - - function lex() { - var token; - scanning = true; - - lastIndex = index; - lastLineNumber = lineNumber; - lastLineStart = lineStart; - - skipComment(); - - token = lookahead; - - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - - lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); - scanning = false; - return token; - } - - function peek() { - scanning = true; - - skipComment(); - - lastIndex = index; - lastLineNumber = lineNumber; - lastLineStart = lineStart; - - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - - lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance(); - scanning = false; - } - - function Position() { - this.line = startLineNumber; - this.column = startIndex - startLineStart; - } - - function SourceLocation() { - this.start = new Position(); - this.end = null; - } - - function WrappingSourceLocation(startToken) { - this.start = { - line: startToken.lineNumber, - column: startToken.start - startToken.lineStart - }; - this.end = null; - } - - function Node() { - if (extra.range) { - this.range = [startIndex, 0]; - } - if (extra.loc) { - this.loc = new SourceLocation(); - } - } - - function WrappingNode(startToken) { - if (extra.range) { - this.range = [startToken.start, 0]; - } - if (extra.loc) { - this.loc = new WrappingSourceLocation(startToken); - } - } - - WrappingNode.prototype = Node.prototype = { - - processComment: function () { - var lastChild, - innerComments, - leadingComments, - trailingComments, - bottomRight = extra.bottomRightStack, - i, - comment, - last = bottomRight[bottomRight.length - 1]; - - if (this.type === Syntax.Program) { - if (this.body.length > 0) { - return; - } - } - /** - * patch innnerComments for properties empty block - * `function a() {/** comments **\/}` - */ - - if (this.type === Syntax.BlockStatement && this.body.length === 0) { - innerComments = []; - for (i = extra.leadingComments.length - 1; i >= 0; --i) { - comment = extra.leadingComments[i]; - if (this.range[1] >= comment.range[1]) { - innerComments.unshift(comment); - extra.leadingComments.splice(i, 1); - extra.trailingComments.splice(i, 1); - } - } - if (innerComments.length) { - this.innerComments = innerComments; - //bottomRight.push(this); - return; - } - } - - if (extra.trailingComments.length > 0) { - trailingComments = []; - for (i = extra.trailingComments.length - 1; i >= 0; --i) { - comment = extra.trailingComments[i]; - if (comment.range[0] >= this.range[1]) { - trailingComments.unshift(comment); - extra.trailingComments.splice(i, 1); - } - } - extra.trailingComments = []; - } else { - if (last && last.trailingComments && last.trailingComments[0].range[0] >= this.range[1]) { - trailingComments = last.trailingComments; - delete last.trailingComments; - } - } - - // Eating the stack. - while (last && last.range[0] >= this.range[0]) { - lastChild = bottomRight.pop(); - last = bottomRight[bottomRight.length - 1]; - } - - if (lastChild) { - if (lastChild.leadingComments) { - leadingComments = []; - for (i = lastChild.leadingComments.length - 1; i >= 0; --i) { - comment = lastChild.leadingComments[i]; - if (comment.range[1] <= this.range[0]) { - leadingComments.unshift(comment); - lastChild.leadingComments.splice(i, 1); - } - } - - if (!lastChild.leadingComments.length) { - lastChild.leadingComments = undefined; - } - } - } else if (extra.leadingComments.length > 0) { - leadingComments = []; - for (i = extra.leadingComments.length - 1; i >= 0; --i) { - comment = extra.leadingComments[i]; - if (comment.range[1] <= this.range[0]) { - leadingComments.unshift(comment); - extra.leadingComments.splice(i, 1); - } - } - } - - - if (leadingComments && leadingComments.length > 0) { - this.leadingComments = leadingComments; - } - if (trailingComments && trailingComments.length > 0) { - this.trailingComments = trailingComments; - } - - bottomRight.push(this); - }, - - finish: function () { - if (extra.range) { - this.range[1] = lastIndex; - } - if (extra.loc) { - this.loc.end = { - line: lastLineNumber, - column: lastIndex - lastLineStart - }; - if (extra.source) { - this.loc.source = extra.source; - } - } - - if (extra.attachComment) { - this.processComment(); - } - }, - - finishArrayExpression: function (elements) { - this.type = Syntax.ArrayExpression; - this.elements = elements; - this.finish(); - return this; - }, - - finishArrayPattern: function (elements) { - this.type = Syntax.ArrayPattern; - this.elements = elements; - this.finish(); - return this; - }, - - finishArrowFunctionExpression: function (params, defaults, body, expression) { - this.type = Syntax.ArrowFunctionExpression; - this.id = null; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = false; - this.expression = expression; - this.finish(); - return this; - }, - - finishAssignmentExpression: function (operator, left, right) { - this.type = Syntax.AssignmentExpression; - this.operator = operator; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishAssignmentPattern: function (left, right) { - this.type = Syntax.AssignmentPattern; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishBinaryExpression: function (operator, left, right) { - this.type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression : Syntax.BinaryExpression; - this.operator = operator; - this.left = left; - this.right = right; - this.finish(); - return this; - }, - - finishBlockStatement: function (body) { - this.type = Syntax.BlockStatement; - this.body = body; - this.finish(); - return this; - }, - - finishBreakStatement: function (label) { - this.type = Syntax.BreakStatement; - this.label = label; - this.finish(); - return this; - }, - - finishCallExpression: function (callee, args) { - this.type = Syntax.CallExpression; - this.callee = callee; - this.arguments = args; - this.finish(); - return this; - }, - - finishCatchClause: function (param, body) { - this.type = Syntax.CatchClause; - this.param = param; - this.body = body; - this.finish(); - return this; - }, - - finishClassBody: function (body) { - this.type = Syntax.ClassBody; - this.body = body; - this.finish(); - return this; - }, - - finishClassDeclaration: function (id, superClass, body) { - this.type = Syntax.ClassDeclaration; - this.id = id; - this.superClass = superClass; - this.body = body; - this.finish(); - return this; - }, - - finishClassExpression: function (id, superClass, body) { - this.type = Syntax.ClassExpression; - this.id = id; - this.superClass = superClass; - this.body = body; - this.finish(); - return this; - }, - - finishConditionalExpression: function (test, consequent, alternate) { - this.type = Syntax.ConditionalExpression; - this.test = test; - this.consequent = consequent; - this.alternate = alternate; - this.finish(); - return this; - }, - - finishContinueStatement: function (label) { - this.type = Syntax.ContinueStatement; - this.label = label; - this.finish(); - return this; - }, - - finishDebuggerStatement: function () { - this.type = Syntax.DebuggerStatement; - this.finish(); - return this; - }, - - finishDoWhileStatement: function (body, test) { - this.type = Syntax.DoWhileStatement; - this.body = body; - this.test = test; - this.finish(); - return this; - }, - - finishEmptyStatement: function () { - this.type = Syntax.EmptyStatement; - this.finish(); - return this; - }, - - finishExpressionStatement: function (expression) { - this.type = Syntax.ExpressionStatement; - this.expression = expression; - this.finish(); - return this; - }, - - finishForStatement: function (init, test, update, body) { - this.type = Syntax.ForStatement; - this.init = init; - this.test = test; - this.update = update; - this.body = body; - this.finish(); - return this; - }, - - finishForOfStatement: function (left, right, body) { - this.type = Syntax.ForOfStatement; - this.left = left; - this.right = right; - this.body = body; - this.finish(); - return this; - }, - - finishForInStatement: function (left, right, body) { - this.type = Syntax.ForInStatement; - this.left = left; - this.right = right; - this.body = body; - this.each = false; - this.finish(); - return this; - }, - - finishFunctionDeclaration: function (id, params, defaults, body, generator) { - this.type = Syntax.FunctionDeclaration; - this.id = id; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = generator; - this.expression = false; - this.finish(); - return this; - }, - - finishFunctionExpression: function (id, params, defaults, body, generator) { - this.type = Syntax.FunctionExpression; - this.id = id; - this.params = params; - this.defaults = defaults; - this.body = body; - this.generator = generator; - this.expression = false; - this.finish(); - return this; - }, - - finishIdentifier: function (name) { - this.type = Syntax.Identifier; - this.name = name; - this.finish(); - return this; - }, - - finishIfStatement: function (test, consequent, alternate) { - this.type = Syntax.IfStatement; - this.test = test; - this.consequent = consequent; - this.alternate = alternate; - this.finish(); - return this; - }, - - finishLabeledStatement: function (label, body) { - this.type = Syntax.LabeledStatement; - this.label = label; - this.body = body; - this.finish(); - return this; - }, - - finishLiteral: function (token) { - this.type = Syntax.Literal; - this.value = token.value; - this.raw = source.slice(token.start, token.end); - if (token.regex) { - this.regex = token.regex; - } - this.finish(); - return this; - }, - - finishMemberExpression: function (accessor, object, property) { - this.type = Syntax.MemberExpression; - this.computed = accessor === '['; - this.object = object; - this.property = property; - this.finish(); - return this; - }, - - finishMetaProperty: function (meta, property) { - this.type = Syntax.MetaProperty; - this.meta = meta; - this.property = property; - this.finish(); - return this; - }, - - finishNewExpression: function (callee, args) { - this.type = Syntax.NewExpression; - this.callee = callee; - this.arguments = args; - this.finish(); - return this; - }, - - finishObjectExpression: function (properties) { - this.type = Syntax.ObjectExpression; - this.properties = properties; - this.finish(); - return this; - }, - - finishObjectPattern: function (properties) { - this.type = Syntax.ObjectPattern; - this.properties = properties; - this.finish(); - return this; - }, - - finishPostfixExpression: function (operator, argument) { - this.type = Syntax.UpdateExpression; - this.operator = operator; - this.argument = argument; - this.prefix = false; - this.finish(); - return this; - }, - - finishProgram: function (body, sourceType) { - this.type = Syntax.Program; - this.body = body; - this.sourceType = sourceType; - this.finish(); - return this; - }, - - finishProperty: function (kind, key, computed, value, method, shorthand) { - this.type = Syntax.Property; - this.key = key; - this.computed = computed; - this.value = value; - this.kind = kind; - this.method = method; - this.shorthand = shorthand; - this.finish(); - return this; - }, - - finishRestElement: function (argument) { - this.type = Syntax.RestElement; - this.argument = argument; - this.finish(); - return this; - }, - - finishReturnStatement: function (argument) { - this.type = Syntax.ReturnStatement; - this.argument = argument; - this.finish(); - return this; - }, - - finishSequenceExpression: function (expressions) { - this.type = Syntax.SequenceExpression; - this.expressions = expressions; - this.finish(); - return this; - }, - - finishSpreadElement: function (argument) { - this.type = Syntax.SpreadElement; - this.argument = argument; - this.finish(); - return this; - }, - - finishSwitchCase: function (test, consequent) { - this.type = Syntax.SwitchCase; - this.test = test; - this.consequent = consequent; - this.finish(); - return this; - }, - - finishSuper: function () { - this.type = Syntax.Super; - this.finish(); - return this; - }, - - finishSwitchStatement: function (discriminant, cases) { - this.type = Syntax.SwitchStatement; - this.discriminant = discriminant; - this.cases = cases; - this.finish(); - return this; - }, - - finishTaggedTemplateExpression: function (tag, quasi) { - this.type = Syntax.TaggedTemplateExpression; - this.tag = tag; - this.quasi = quasi; - this.finish(); - return this; - }, - - finishTemplateElement: function (value, tail) { - this.type = Syntax.TemplateElement; - this.value = value; - this.tail = tail; - this.finish(); - return this; - }, - - finishTemplateLiteral: function (quasis, expressions) { - this.type = Syntax.TemplateLiteral; - this.quasis = quasis; - this.expressions = expressions; - this.finish(); - return this; - }, - - finishThisExpression: function () { - this.type = Syntax.ThisExpression; - this.finish(); - return this; - }, - - finishThrowStatement: function (argument) { - this.type = Syntax.ThrowStatement; - this.argument = argument; - this.finish(); - return this; - }, - - finishTryStatement: function (block, handler, finalizer) { - this.type = Syntax.TryStatement; - this.block = block; - this.guardedHandlers = []; - this.handlers = handler ? [handler] : []; - this.handler = handler; - this.finalizer = finalizer; - this.finish(); - return this; - }, - - finishUnaryExpression: function (operator, argument) { - this.type = (operator === '++' || operator === '--') ? Syntax.UpdateExpression : Syntax.UnaryExpression; - this.operator = operator; - this.argument = argument; - this.prefix = true; - this.finish(); - return this; - }, - - finishVariableDeclaration: function (declarations) { - this.type = Syntax.VariableDeclaration; - this.declarations = declarations; - this.kind = 'var'; - this.finish(); - return this; - }, - - finishLexicalDeclaration: function (declarations, kind) { - this.type = Syntax.VariableDeclaration; - this.declarations = declarations; - this.kind = kind; - this.finish(); - return this; - }, - - finishVariableDeclarator: function (id, init) { - this.type = Syntax.VariableDeclarator; - this.id = id; - this.init = init; - this.finish(); - return this; - }, - - finishWhileStatement: function (test, body) { - this.type = Syntax.WhileStatement; - this.test = test; - this.body = body; - this.finish(); - return this; - }, - - finishWithStatement: function (object, body) { - this.type = Syntax.WithStatement; - this.object = object; - this.body = body; - this.finish(); - return this; - }, - - finishExportSpecifier: function (local, exported) { - this.type = Syntax.ExportSpecifier; - this.exported = exported || local; - this.local = local; - this.finish(); - return this; - }, - - finishImportDefaultSpecifier: function (local) { - this.type = Syntax.ImportDefaultSpecifier; - this.local = local; - this.finish(); - return this; - }, - - finishImportNamespaceSpecifier: function (local) { - this.type = Syntax.ImportNamespaceSpecifier; - this.local = local; - this.finish(); - return this; - }, - - finishExportNamedDeclaration: function (declaration, specifiers, src) { - this.type = Syntax.ExportNamedDeclaration; - this.declaration = declaration; - this.specifiers = specifiers; - this.source = src; - this.finish(); - return this; - }, - - finishExportDefaultDeclaration: function (declaration) { - this.type = Syntax.ExportDefaultDeclaration; - this.declaration = declaration; - this.finish(); - return this; - }, - - finishExportAllDeclaration: function (src) { - this.type = Syntax.ExportAllDeclaration; - this.source = src; - this.finish(); - return this; - }, - - finishImportSpecifier: function (local, imported) { - this.type = Syntax.ImportSpecifier; - this.local = local || imported; - this.imported = imported; - this.finish(); - return this; - }, - - finishImportDeclaration: function (specifiers, src) { - this.type = Syntax.ImportDeclaration; - this.specifiers = specifiers; - this.source = src; - this.finish(); - return this; - }, - - finishYieldExpression: function (argument, delegate) { - this.type = Syntax.YieldExpression; - this.argument = argument; - this.delegate = delegate; - this.finish(); - return this; - } - }; - - - function recordError(error) { - var e, existing; - - for (e = 0; e < extra.errors.length; e++) { - existing = extra.errors[e]; - // Prevent duplicated error. - /* istanbul ignore next */ - if (existing.index === error.index && existing.message === error.message) { - return; - } - } - - extra.errors.push(error); - } - - function constructError(msg, column) { - var error = new Error(msg); - try { - throw error; - } catch (base) { - /* istanbul ignore else */ - if (Object.create && Object.defineProperty) { - error = Object.create(base); - Object.defineProperty(error, 'column', { value: column }); - } - } finally { - return error; - } - } - - function createError(line, pos, description) { - var msg, column, error; - - msg = 'Line ' + line + ': ' + description; - column = pos - (scanning ? lineStart : lastLineStart) + 1; - error = constructError(msg, column); - error.lineNumber = line; - error.description = description; - error.index = pos; - return error; - } - - // Throw an exception - - function throwError(messageFormat) { - var args, msg; - - args = Array.prototype.slice.call(arguments, 1); - msg = messageFormat.replace(/%(\d)/g, - function (whole, idx) { - assert(idx < args.length, 'Message reference must be in range'); - return args[idx]; - } - ); - - throw createError(lastLineNumber, lastIndex, msg); - } - - function tolerateError(messageFormat) { - var args, msg, error; - - args = Array.prototype.slice.call(arguments, 1); - /* istanbul ignore next */ - msg = messageFormat.replace(/%(\d)/g, - function (whole, idx) { - assert(idx < args.length, 'Message reference must be in range'); - return args[idx]; - } - ); - - error = createError(lineNumber, lastIndex, msg); - if (extra.errors) { - recordError(error); - } else { - throw error; - } - } - - // Throw an exception because of the token. - - function unexpectedTokenError(token, message) { - var value, msg = message || Messages.UnexpectedToken; - - if (token) { - if (!message) { - msg = (token.type === Token.EOF) ? Messages.UnexpectedEOS : - (token.type === Token.Identifier) ? Messages.UnexpectedIdentifier : - (token.type === Token.NumericLiteral) ? Messages.UnexpectedNumber : - (token.type === Token.StringLiteral) ? Messages.UnexpectedString : - (token.type === Token.Template) ? Messages.UnexpectedTemplate : - Messages.UnexpectedToken; - - if (token.type === Token.Keyword) { - if (isFutureReservedWord(token.value)) { - msg = Messages.UnexpectedReserved; - } else if (strict && isStrictModeReservedWord(token.value)) { - msg = Messages.StrictReservedWord; - } - } - } - - value = (token.type === Token.Template) ? token.value.raw : token.value; - } else { - value = 'ILLEGAL'; - } - - msg = msg.replace('%0', value); - - return (token && typeof token.lineNumber === 'number') ? - createError(token.lineNumber, token.start, msg) : - createError(scanning ? lineNumber : lastLineNumber, scanning ? index : lastIndex, msg); - } - - function throwUnexpectedToken(token, message) { - throw unexpectedTokenError(token, message); - } - - function tolerateUnexpectedToken(token, message) { - var error = unexpectedTokenError(token, message); - if (extra.errors) { - recordError(error); - } else { - throw error; - } - } - - // Expect the next token to match the specified punctuator. - // If not, an exception will be thrown. - - function expect(value) { - var token = lex(); - if (token.type !== Token.Punctuator || token.value !== value) { - throwUnexpectedToken(token); - } - } - - /** - * @name expectCommaSeparator - * @description Quietly expect a comma when in tolerant mode, otherwise delegates - * to expect(value) - * @since 2.0 - */ - function expectCommaSeparator() { - var token; - - if (extra.errors) { - token = lookahead; - if (token.type === Token.Punctuator && token.value === ',') { - lex(); - } else if (token.type === Token.Punctuator && token.value === ';') { - lex(); - tolerateUnexpectedToken(token); - } else { - tolerateUnexpectedToken(token, Messages.UnexpectedToken); - } - } else { - expect(','); - } - } - - // Expect the next token to match the specified keyword. - // If not, an exception will be thrown. - - function expectKeyword(keyword) { - var token = lex(); - if (token.type !== Token.Keyword || token.value !== keyword) { - throwUnexpectedToken(token); - } - } - - // Return true if the next token matches the specified punctuator. - - function match(value) { - return lookahead.type === Token.Punctuator && lookahead.value === value; - } - - // Return true if the next token matches the specified keyword - - function matchKeyword(keyword) { - return lookahead.type === Token.Keyword && lookahead.value === keyword; - } - - // Return true if the next token matches the specified contextual keyword - // (where an identifier is sometimes a keyword depending on the context) - - function matchContextualKeyword(keyword) { - return lookahead.type === Token.Identifier && lookahead.value === keyword; - } - - // Return true if the next token is an assignment operator - - function matchAssign() { - var op; - - if (lookahead.type !== Token.Punctuator) { - return false; - } - op = lookahead.value; - return op === '=' || - op === '*=' || - op === '/=' || - op === '%=' || - op === '+=' || - op === '-=' || - op === '<<=' || - op === '>>=' || - op === '>>>=' || - op === '&=' || - op === '^=' || - op === '|='; - } - - function consumeSemicolon() { - // Catch the very common case first: immediately a semicolon (U+003B). - if (source.charCodeAt(startIndex) === 0x3B || match(';')) { - lex(); - return; - } - - if (hasLineTerminator) { - return; - } - - // FIXME(ikarienator): this is seemingly an issue in the previous location info convention. - lastIndex = startIndex; - lastLineNumber = startLineNumber; - lastLineStart = startLineStart; - - if (lookahead.type !== Token.EOF && !match('}')) { - throwUnexpectedToken(lookahead); - } - } - - // Cover grammar support. - // - // When an assignment expression position starts with an left parenthesis, the determination of the type - // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead) - // or the first comma. This situation also defers the determination of all the expressions nested in the pair. - // - // There are three productions that can be parsed in a parentheses pair that needs to be determined - // after the outermost pair is closed. They are: - // - // 1. AssignmentExpression - // 2. BindingElements - // 3. AssignmentTargets - // - // In order to avoid exponential backtracking, we use two flags to denote if the production can be - // binding element or assignment target. - // - // The three productions have the relationship: - // - // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression - // - // with a single exception that CoverInitializedName when used directly in an Expression, generates - // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the - // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair. - // - // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not - // effect the current flags. This means the production the parser parses is only used as an expression. Therefore - // the CoverInitializedName check is conducted. - // - // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates - // the flags outside of the parser. This means the production the parser parses is used as a part of a potential - // pattern. The CoverInitializedName check is deferred. - function isolateCoverGrammar(parser) { - var oldIsBindingElement = isBindingElement, - oldIsAssignmentTarget = isAssignmentTarget, - oldFirstCoverInitializedNameError = firstCoverInitializedNameError, - result; - isBindingElement = true; - isAssignmentTarget = true; - firstCoverInitializedNameError = null; - result = parser(); - if (firstCoverInitializedNameError !== null) { - throwUnexpectedToken(firstCoverInitializedNameError); - } - isBindingElement = oldIsBindingElement; - isAssignmentTarget = oldIsAssignmentTarget; - firstCoverInitializedNameError = oldFirstCoverInitializedNameError; - return result; - } - - function inheritCoverGrammar(parser) { - var oldIsBindingElement = isBindingElement, - oldIsAssignmentTarget = isAssignmentTarget, - oldFirstCoverInitializedNameError = firstCoverInitializedNameError, - result; - isBindingElement = true; - isAssignmentTarget = true; - firstCoverInitializedNameError = null; - result = parser(); - isBindingElement = isBindingElement && oldIsBindingElement; - isAssignmentTarget = isAssignmentTarget && oldIsAssignmentTarget; - firstCoverInitializedNameError = oldFirstCoverInitializedNameError || firstCoverInitializedNameError; - return result; - } - - // ECMA-262 13.3.3 Destructuring Binding Patterns - - function parseArrayPattern(params, kind) { - var node = new Node(), elements = [], rest, restNode; - expect('['); - - while (!match(']')) { - if (match(',')) { - lex(); - elements.push(null); - } else { - if (match('...')) { - restNode = new Node(); - lex(); - params.push(lookahead); - rest = parseVariableIdentifier(kind); - elements.push(restNode.finishRestElement(rest)); - break; - } else { - elements.push(parsePatternWithDefault(params, kind)); - } - if (!match(']')) { - expect(','); - } - } - - } - - expect(']'); - - return node.finishArrayPattern(elements); - } - - function parsePropertyPattern(params, kind) { - var node = new Node(), key, keyToken, computed = match('['), init; - if (lookahead.type === Token.Identifier) { - keyToken = lookahead; - key = parseVariableIdentifier(); - if (match('=')) { - params.push(keyToken); - lex(); - init = parseAssignmentExpression(); - - return node.finishProperty( - 'init', key, false, - new WrappingNode(keyToken).finishAssignmentPattern(key, init), false, false); - } else if (!match(':')) { - params.push(keyToken); - return node.finishProperty('init', key, false, key, false, true); - } - } else { - key = parseObjectPropertyKey(); - } - expect(':'); - init = parsePatternWithDefault(params, kind); - return node.finishProperty('init', key, computed, init, false, false); - } - - function parseObjectPattern(params, kind) { - var node = new Node(), properties = []; - - expect('{'); - - while (!match('}')) { - properties.push(parsePropertyPattern(params, kind)); - if (!match('}')) { - expect(','); - } - } - - lex(); - - return node.finishObjectPattern(properties); - } - - function parsePattern(params, kind) { - if (match('[')) { - return parseArrayPattern(params, kind); - } else if (match('{')) { - return parseObjectPattern(params, kind); - } else if (matchKeyword('let')) { - if (kind === 'const' || kind === 'let') { - tolerateUnexpectedToken(lookahead, Messages.UnexpectedToken); - } - } - - params.push(lookahead); - return parseVariableIdentifier(kind); - } - - function parsePatternWithDefault(params, kind) { - var startToken = lookahead, pattern, previousAllowYield, right; - pattern = parsePattern(params, kind); - if (match('=')) { - lex(); - previousAllowYield = state.allowYield; - state.allowYield = true; - right = isolateCoverGrammar(parseAssignmentExpression); - state.allowYield = previousAllowYield; - pattern = new WrappingNode(startToken).finishAssignmentPattern(pattern, right); - } - return pattern; - } - - // ECMA-262 12.2.5 Array Initializer - - function parseArrayInitializer() { - var elements = [], node = new Node(), restSpread; - - expect('['); - - while (!match(']')) { - if (match(',')) { - lex(); - elements.push(null); - } else if (match('...')) { - restSpread = new Node(); - lex(); - restSpread.finishSpreadElement(inheritCoverGrammar(parseAssignmentExpression)); - - if (!match(']')) { - isAssignmentTarget = isBindingElement = false; - expect(','); - } - elements.push(restSpread); - } else { - elements.push(inheritCoverGrammar(parseAssignmentExpression)); - - if (!match(']')) { - expect(','); - } - } - } - - lex(); - - return node.finishArrayExpression(elements); - } - - // ECMA-262 12.2.6 Object Initializer - - function parsePropertyFunction(node, paramInfo, isGenerator) { - var previousStrict, body; - - isAssignmentTarget = isBindingElement = false; - - previousStrict = strict; - body = isolateCoverGrammar(parseFunctionSourceElements); - - if (strict && paramInfo.firstRestricted) { - tolerateUnexpectedToken(paramInfo.firstRestricted, paramInfo.message); - } - if (strict && paramInfo.stricted) { - tolerateUnexpectedToken(paramInfo.stricted, paramInfo.message); - } - - strict = previousStrict; - return node.finishFunctionExpression(null, paramInfo.params, paramInfo.defaults, body, isGenerator); - } - - function parsePropertyMethodFunction() { - var params, method, node = new Node(), - previousAllowYield = state.allowYield; - - state.allowYield = false; - params = parseParams(); - state.allowYield = previousAllowYield; - - state.allowYield = false; - method = parsePropertyFunction(node, params, false); - state.allowYield = previousAllowYield; - - return method; - } - - function parseObjectPropertyKey() { - var token, node = new Node(), expr; - - token = lex(); - - // Note: This function is called only from parseObjectProperty(), where - // EOF and Punctuator tokens are already filtered out. - - switch (token.type) { - case Token.StringLiteral: - case Token.NumericLiteral: - if (strict && token.octal) { - tolerateUnexpectedToken(token, Messages.StrictOctalLiteral); - } - return node.finishLiteral(token); - case Token.Identifier: - case Token.BooleanLiteral: - case Token.NullLiteral: - case Token.Keyword: - return node.finishIdentifier(token.value); - case Token.Punctuator: - if (token.value === '[') { - expr = isolateCoverGrammar(parseAssignmentExpression); - expect(']'); - return expr; - } - break; - } - throwUnexpectedToken(token); - } - - function lookaheadPropertyName() { - switch (lookahead.type) { - case Token.Identifier: - case Token.StringLiteral: - case Token.BooleanLiteral: - case Token.NullLiteral: - case Token.NumericLiteral: - case Token.Keyword: - return true; - case Token.Punctuator: - return lookahead.value === '['; - } - return false; - } - - // This function is to try to parse a MethodDefinition as defined in 14.3. But in the case of object literals, - // it might be called at a position where there is in fact a short hand identifier pattern or a data property. - // This can only be determined after we consumed up to the left parentheses. - // - // In order to avoid back tracking, it returns `null` if the position is not a MethodDefinition and the caller - // is responsible to visit other options. - function tryParseMethodDefinition(token, key, computed, node) { - var value, options, methodNode, params, - previousAllowYield = state.allowYield; - - if (token.type === Token.Identifier) { - // check for `get` and `set`; - - if (token.value === 'get' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - expect('('); - expect(')'); - - state.allowYield = false; - value = parsePropertyFunction(methodNode, { - params: [], - defaults: [], - stricted: null, - firstRestricted: null, - message: null - }, false); - state.allowYield = previousAllowYield; - - return node.finishProperty('get', key, computed, value, false, false); - } else if (token.value === 'set' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - expect('('); - - options = { - params: [], - defaultCount: 0, - defaults: [], - firstRestricted: null, - paramSet: {} - }; - if (match(')')) { - tolerateUnexpectedToken(lookahead); - } else { - state.allowYield = false; - parseParam(options); - state.allowYield = previousAllowYield; - if (options.defaultCount === 0) { - options.defaults = []; - } - } - expect(')'); - - state.allowYield = false; - value = parsePropertyFunction(methodNode, options, false); - state.allowYield = previousAllowYield; - - return node.finishProperty('set', key, computed, value, false, false); - } - } else if (token.type === Token.Punctuator && token.value === '*' && lookaheadPropertyName()) { - computed = match('['); - key = parseObjectPropertyKey(); - methodNode = new Node(); - - state.allowYield = true; - params = parseParams(); - state.allowYield = previousAllowYield; - - state.allowYield = false; - value = parsePropertyFunction(methodNode, params, true); - state.allowYield = previousAllowYield; - - return node.finishProperty('init', key, computed, value, true, false); - } - - if (key && match('(')) { - value = parsePropertyMethodFunction(); - return node.finishProperty('init', key, computed, value, true, false); - } - - // Not a MethodDefinition. - return null; - } - - function parseObjectProperty(hasProto) { - var token = lookahead, node = new Node(), computed, key, maybeMethod, proto, value; - - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - } - maybeMethod = tryParseMethodDefinition(token, key, computed, node); - if (maybeMethod) { - return maybeMethod; - } - - if (!key) { - throwUnexpectedToken(lookahead); - } - - // Check for duplicated __proto__ - if (!computed) { - proto = (key.type === Syntax.Identifier && key.name === '__proto__') || - (key.type === Syntax.Literal && key.value === '__proto__'); - if (hasProto.value && proto) { - tolerateError(Messages.DuplicateProtoProperty); - } - hasProto.value |= proto; - } - - if (match(':')) { - lex(); - value = inheritCoverGrammar(parseAssignmentExpression); - return node.finishProperty('init', key, computed, value, false, false); - } - - if (token.type === Token.Identifier) { - if (match('=')) { - firstCoverInitializedNameError = lookahead; - lex(); - value = isolateCoverGrammar(parseAssignmentExpression); - return node.finishProperty('init', key, computed, - new WrappingNode(token).finishAssignmentPattern(key, value), false, true); - } - return node.finishProperty('init', key, computed, key, false, true); - } - - throwUnexpectedToken(lookahead); - } - - function parseObjectInitializer() { - var properties = [], hasProto = {value: false}, node = new Node(); - - expect('{'); - - while (!match('}')) { - properties.push(parseObjectProperty(hasProto)); - - if (!match('}')) { - expectCommaSeparator(); - } - } - - expect('}'); - - return node.finishObjectExpression(properties); - } - - function reinterpretExpressionAsPattern(expr) { - var i; - switch (expr.type) { - case Syntax.Identifier: - case Syntax.MemberExpression: - case Syntax.RestElement: - case Syntax.AssignmentPattern: - break; - case Syntax.SpreadElement: - expr.type = Syntax.RestElement; - reinterpretExpressionAsPattern(expr.argument); - break; - case Syntax.ArrayExpression: - expr.type = Syntax.ArrayPattern; - for (i = 0; i < expr.elements.length; i++) { - if (expr.elements[i] !== null) { - reinterpretExpressionAsPattern(expr.elements[i]); - } - } - break; - case Syntax.ObjectExpression: - expr.type = Syntax.ObjectPattern; - for (i = 0; i < expr.properties.length; i++) { - reinterpretExpressionAsPattern(expr.properties[i].value); - } - break; - case Syntax.AssignmentExpression: - expr.type = Syntax.AssignmentPattern; - reinterpretExpressionAsPattern(expr.left); - break; - default: - // Allow other node type for tolerant parsing. - break; - } - } - - // ECMA-262 12.2.9 Template Literals - - function parseTemplateElement(option) { - var node, token; - - if (lookahead.type !== Token.Template || (option.head && !lookahead.head)) { - throwUnexpectedToken(); - } - - node = new Node(); - token = lex(); - - return node.finishTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail); - } - - function parseTemplateLiteral() { - var quasi, quasis, expressions, node = new Node(); - - quasi = parseTemplateElement({ head: true }); - quasis = [quasi]; - expressions = []; - - while (!quasi.tail) { - expressions.push(parseExpression()); - quasi = parseTemplateElement({ head: false }); - quasis.push(quasi); - } - - return node.finishTemplateLiteral(quasis, expressions); - } - - // ECMA-262 12.2.10 The Grouping Operator - - function parseGroupExpression() { - var expr, expressions, startToken, i, params = []; - - expect('('); - - if (match(')')) { - lex(); - if (!match('=>')) { - expect('=>'); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [], - rawParams: [] - }; - } - - startToken = lookahead; - if (match('...')) { - expr = parseRestElement(params); - expect(')'); - if (!match('=>')) { - expect('=>'); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [expr] - }; - } - - isBindingElement = true; - expr = inheritCoverGrammar(parseAssignmentExpression); - - if (match(',')) { - isAssignmentTarget = false; - expressions = [expr]; - - while (startIndex < length) { - if (!match(',')) { - break; - } - lex(); - - if (match('...')) { - if (!isBindingElement) { - throwUnexpectedToken(lookahead); - } - expressions.push(parseRestElement(params)); - expect(')'); - if (!match('=>')) { - expect('=>'); - } - isBindingElement = false; - for (i = 0; i < expressions.length; i++) { - reinterpretExpressionAsPattern(expressions[i]); - } - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: expressions - }; - } - - expressions.push(inheritCoverGrammar(parseAssignmentExpression)); - } - - expr = new WrappingNode(startToken).finishSequenceExpression(expressions); - } - - - expect(')'); - - if (match('=>')) { - if (expr.type === Syntax.Identifier && expr.name === 'yield') { - return { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: [expr] - }; - } - - if (!isBindingElement) { - throwUnexpectedToken(lookahead); - } - - if (expr.type === Syntax.SequenceExpression) { - for (i = 0; i < expr.expressions.length; i++) { - reinterpretExpressionAsPattern(expr.expressions[i]); - } - } else { - reinterpretExpressionAsPattern(expr); - } - - expr = { - type: PlaceHolders.ArrowParameterPlaceHolder, - params: expr.type === Syntax.SequenceExpression ? expr.expressions : [expr] - }; - } - isBindingElement = false; - return expr; - } - - - // ECMA-262 12.2 Primary Expressions - - function parsePrimaryExpression() { - var type, token, expr, node; - - if (match('(')) { - isBindingElement = false; - return inheritCoverGrammar(parseGroupExpression); - } - - if (match('[')) { - return inheritCoverGrammar(parseArrayInitializer); - } - - if (match('{')) { - return inheritCoverGrammar(parseObjectInitializer); - } - - type = lookahead.type; - node = new Node(); - - if (type === Token.Identifier) { - if (state.sourceType === 'module' && lookahead.value === 'await') { - tolerateUnexpectedToken(lookahead); - } - expr = node.finishIdentifier(lex().value); - } else if (type === Token.StringLiteral || type === Token.NumericLiteral) { - isAssignmentTarget = isBindingElement = false; - if (strict && lookahead.octal) { - tolerateUnexpectedToken(lookahead, Messages.StrictOctalLiteral); - } - expr = node.finishLiteral(lex()); - } else if (type === Token.Keyword) { - if (!strict && state.allowYield && matchKeyword('yield')) { - return parseNonComputedProperty(); - } - isAssignmentTarget = isBindingElement = false; - if (matchKeyword('function')) { - return parseFunctionExpression(); - } - if (matchKeyword('this')) { - lex(); - return node.finishThisExpression(); - } - if (matchKeyword('class')) { - return parseClassExpression(); - } - if (!strict && matchKeyword('let')) { - return node.finishIdentifier(lex().value); - } - throwUnexpectedToken(lex()); - } else if (type === Token.BooleanLiteral) { - isAssignmentTarget = isBindingElement = false; - token = lex(); - token.value = (token.value === 'true'); - expr = node.finishLiteral(token); - } else if (type === Token.NullLiteral) { - isAssignmentTarget = isBindingElement = false; - token = lex(); - token.value = null; - expr = node.finishLiteral(token); - } else if (match('/') || match('/=')) { - isAssignmentTarget = isBindingElement = false; - index = startIndex; - - if (typeof extra.tokens !== 'undefined') { - token = collectRegex(); - } else { - token = scanRegExp(); - } - lex(); - expr = node.finishLiteral(token); - } else if (type === Token.Template) { - expr = parseTemplateLiteral(); - } else { - throwUnexpectedToken(lex()); - } - - return expr; - } - - // ECMA-262 12.3 Left-Hand-Side Expressions - - function parseArguments() { - var args = [], expr; - - expect('('); - - if (!match(')')) { - while (startIndex < length) { - if (match('...')) { - expr = new Node(); - lex(); - expr.finishSpreadElement(isolateCoverGrammar(parseAssignmentExpression)); - } else { - expr = isolateCoverGrammar(parseAssignmentExpression); - } - args.push(expr); - if (match(')')) { - break; - } - expectCommaSeparator(); - } - } - - expect(')'); - - return args; - } - - function parseNonComputedProperty() { - var token, node = new Node(); - - token = lex(); - - if (!isIdentifierName(token)) { - throwUnexpectedToken(token); - } - - return node.finishIdentifier(token.value); - } - - function parseNonComputedMember() { - expect('.'); - - return parseNonComputedProperty(); - } - - function parseComputedMember() { - var expr; - - expect('['); - - expr = isolateCoverGrammar(parseExpression); - - expect(']'); - - return expr; - } - - // ECMA-262 12.3.3 The new Operator - - function parseNewExpression() { - var callee, args, node = new Node(); - - expectKeyword('new'); - - if (match('.')) { - lex(); - if (lookahead.type === Token.Identifier && lookahead.value === 'target') { - if (state.inFunctionBody) { - lex(); - return node.finishMetaProperty('new', 'target'); - } - } - throwUnexpectedToken(lookahead); - } - - callee = isolateCoverGrammar(parseLeftHandSideExpression); - args = match('(') ? parseArguments() : []; - - isAssignmentTarget = isBindingElement = false; - - return node.finishNewExpression(callee, args); - } - - // ECMA-262 12.3.4 Function Calls - - function parseLeftHandSideExpressionAllowCall() { - var quasi, expr, args, property, startToken, previousAllowIn = state.allowIn; - - startToken = lookahead; - state.allowIn = true; - - if (matchKeyword('super') && state.inFunctionBody) { - expr = new Node(); - lex(); - expr = expr.finishSuper(); - if (!match('(') && !match('.') && !match('[')) { - throwUnexpectedToken(lookahead); - } - } else { - expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression); - } - - for (;;) { - if (match('.')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseNonComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); - } else if (match('(')) { - isBindingElement = false; - isAssignmentTarget = false; - args = parseArguments(); - expr = new WrappingNode(startToken).finishCallExpression(expr, args); - } else if (match('[')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); - } else if (lookahead.type === Token.Template && lookahead.head) { - quasi = parseTemplateLiteral(); - expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi); - } else { - break; - } - } - state.allowIn = previousAllowIn; - - return expr; - } - - // ECMA-262 12.3 Left-Hand-Side Expressions - - function parseLeftHandSideExpression() { - var quasi, expr, property, startToken; - assert(state.allowIn, 'callee of new expression always allow in keyword.'); - - startToken = lookahead; - - if (matchKeyword('super') && state.inFunctionBody) { - expr = new Node(); - lex(); - expr = expr.finishSuper(); - if (!match('[') && !match('.')) { - throwUnexpectedToken(lookahead); - } - } else { - expr = inheritCoverGrammar(matchKeyword('new') ? parseNewExpression : parsePrimaryExpression); - } - - for (;;) { - if (match('[')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('[', expr, property); - } else if (match('.')) { - isBindingElement = false; - isAssignmentTarget = true; - property = parseNonComputedMember(); - expr = new WrappingNode(startToken).finishMemberExpression('.', expr, property); - } else if (lookahead.type === Token.Template && lookahead.head) { - quasi = parseTemplateLiteral(); - expr = new WrappingNode(startToken).finishTaggedTemplateExpression(expr, quasi); - } else { - break; - } - } - return expr; - } - - // ECMA-262 12.4 Postfix Expressions - - function parsePostfixExpression() { - var expr, token, startToken = lookahead; - - expr = inheritCoverGrammar(parseLeftHandSideExpressionAllowCall); - - if (!hasLineTerminator && lookahead.type === Token.Punctuator) { - if (match('++') || match('--')) { - // ECMA-262 11.3.1, 11.3.2 - if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { - tolerateError(Messages.StrictLHSPostfix); - } - - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - - isAssignmentTarget = isBindingElement = false; - - token = lex(); - expr = new WrappingNode(startToken).finishPostfixExpression(token.value, expr); - } - } - - return expr; - } - - // ECMA-262 12.5 Unary Operators - - function parseUnaryExpression() { - var token, expr, startToken; - - if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) { - expr = parsePostfixExpression(); - } else if (match('++') || match('--')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - // ECMA-262 11.4.4, 11.4.5 - if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) { - tolerateError(Messages.StrictLHSPrefix); - } - - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - isAssignmentTarget = isBindingElement = false; - } else if (match('+') || match('-') || match('~') || match('!')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - isAssignmentTarget = isBindingElement = false; - } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) { - startToken = lookahead; - token = lex(); - expr = inheritCoverGrammar(parseUnaryExpression); - expr = new WrappingNode(startToken).finishUnaryExpression(token.value, expr); - if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) { - tolerateError(Messages.StrictDelete); - } - isAssignmentTarget = isBindingElement = false; - } else { - expr = parsePostfixExpression(); - } - - return expr; - } - - function binaryPrecedence(token, allowIn) { - var prec = 0; - - if (token.type !== Token.Punctuator && token.type !== Token.Keyword) { - return 0; - } - - switch (token.value) { - case '||': - prec = 1; - break; - - case '&&': - prec = 2; - break; - - case '|': - prec = 3; - break; - - case '^': - prec = 4; - break; - - case '&': - prec = 5; - break; - - case '==': - case '!=': - case '===': - case '!==': - prec = 6; - break; - - case '<': - case '>': - case '<=': - case '>=': - case 'instanceof': - prec = 7; - break; - - case 'in': - prec = allowIn ? 7 : 0; - break; - - case '<<': - case '>>': - case '>>>': - prec = 8; - break; - - case '+': - case '-': - prec = 9; - break; - - case '*': - case '/': - case '%': - prec = 11; - break; - - default: - break; - } - - return prec; - } - - // ECMA-262 12.6 Multiplicative Operators - // ECMA-262 12.7 Additive Operators - // ECMA-262 12.8 Bitwise Shift Operators - // ECMA-262 12.9 Relational Operators - // ECMA-262 12.10 Equality Operators - // ECMA-262 12.11 Binary Bitwise Operators - // ECMA-262 12.12 Binary Logical Operators - - function parseBinaryExpression() { - var marker, markers, expr, token, prec, stack, right, operator, left, i; - - marker = lookahead; - left = inheritCoverGrammar(parseUnaryExpression); - - token = lookahead; - prec = binaryPrecedence(token, state.allowIn); - if (prec === 0) { - return left; - } - isAssignmentTarget = isBindingElement = false; - token.prec = prec; - lex(); - - markers = [marker, lookahead]; - right = isolateCoverGrammar(parseUnaryExpression); - - stack = [left, token, right]; - - while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) { - - // Reduce: make a binary expression from the three topmost entries. - while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) { - right = stack.pop(); - operator = stack.pop().value; - left = stack.pop(); - markers.pop(); - expr = new WrappingNode(markers[markers.length - 1]).finishBinaryExpression(operator, left, right); - stack.push(expr); - } - - // Shift. - token = lex(); - token.prec = prec; - stack.push(token); - markers.push(lookahead); - expr = isolateCoverGrammar(parseUnaryExpression); - stack.push(expr); - } - - // Final reduce to clean-up the stack. - i = stack.length - 1; - expr = stack[i]; - markers.pop(); - while (i > 1) { - expr = new WrappingNode(markers.pop()).finishBinaryExpression(stack[i - 1].value, stack[i - 2], expr); - i -= 2; - } - - return expr; - } - - - // ECMA-262 12.13 Conditional Operator - - function parseConditionalExpression() { - var expr, previousAllowIn, consequent, alternate, startToken; - - startToken = lookahead; - - expr = inheritCoverGrammar(parseBinaryExpression); - if (match('?')) { - lex(); - previousAllowIn = state.allowIn; - state.allowIn = true; - consequent = isolateCoverGrammar(parseAssignmentExpression); - state.allowIn = previousAllowIn; - expect(':'); - alternate = isolateCoverGrammar(parseAssignmentExpression); - - expr = new WrappingNode(startToken).finishConditionalExpression(expr, consequent, alternate); - isAssignmentTarget = isBindingElement = false; - } - - return expr; - } - - // ECMA-262 14.2 Arrow Function Definitions - - function parseConciseBody() { - if (match('{')) { - return parseFunctionSourceElements(); - } - return isolateCoverGrammar(parseAssignmentExpression); - } - - function checkPatternParam(options, param) { - var i; - switch (param.type) { - case Syntax.Identifier: - validateParam(options, param, param.name); - break; - case Syntax.RestElement: - checkPatternParam(options, param.argument); - break; - case Syntax.AssignmentPattern: - checkPatternParam(options, param.left); - break; - case Syntax.ArrayPattern: - for (i = 0; i < param.elements.length; i++) { - if (param.elements[i] !== null) { - checkPatternParam(options, param.elements[i]); - } - } - break; - case Syntax.YieldExpression: - break; - default: - assert(param.type === Syntax.ObjectPattern, 'Invalid type'); - for (i = 0; i < param.properties.length; i++) { - checkPatternParam(options, param.properties[i].value); - } - break; - } - } - function reinterpretAsCoverFormalsList(expr) { - var i, len, param, params, defaults, defaultCount, options, token; - - defaults = []; - defaultCount = 0; - params = [expr]; - - switch (expr.type) { - case Syntax.Identifier: - break; - case PlaceHolders.ArrowParameterPlaceHolder: - params = expr.params; - break; - default: - return null; - } - - options = { - paramSet: {} - }; - - for (i = 0, len = params.length; i < len; i += 1) { - param = params[i]; - switch (param.type) { - case Syntax.AssignmentPattern: - params[i] = param.left; - if (param.right.type === Syntax.YieldExpression) { - if (param.right.argument) { - throwUnexpectedToken(lookahead); - } - param.right.type = Syntax.Identifier; - param.right.name = 'yield'; - delete param.right.argument; - delete param.right.delegate; - } - defaults.push(param.right); - ++defaultCount; - checkPatternParam(options, param.left); - break; - default: - checkPatternParam(options, param); - params[i] = param; - defaults.push(null); - break; - } - } - - if (strict || !state.allowYield) { - for (i = 0, len = params.length; i < len; i += 1) { - param = params[i]; - if (param.type === Syntax.YieldExpression) { - throwUnexpectedToken(lookahead); - } - } - } - - if (options.message === Messages.StrictParamDupe) { - token = strict ? options.stricted : options.firstRestricted; - throwUnexpectedToken(token, options.message); - } - - if (defaultCount === 0) { - defaults = []; - } - - return { - params: params, - defaults: defaults, - stricted: options.stricted, - firstRestricted: options.firstRestricted, - message: options.message - }; - } - - function parseArrowFunctionExpression(options, node) { - var previousStrict, previousAllowYield, body; - - if (hasLineTerminator) { - tolerateUnexpectedToken(lookahead); - } - expect('=>'); - - previousStrict = strict; - previousAllowYield = state.allowYield; - state.allowYield = true; - - body = parseConciseBody(); - - if (strict && options.firstRestricted) { - throwUnexpectedToken(options.firstRestricted, options.message); - } - if (strict && options.stricted) { - tolerateUnexpectedToken(options.stricted, options.message); - } - - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishArrowFunctionExpression(options.params, options.defaults, body, body.type !== Syntax.BlockStatement); - } - - // ECMA-262 14.4 Yield expression - - function parseYieldExpression() { - var argument, expr, delegate, previousAllowYield; - - argument = null; - expr = new Node(); - - expectKeyword('yield'); - - if (!hasLineTerminator) { - previousAllowYield = state.allowYield; - state.allowYield = false; - delegate = match('*'); - if (delegate) { - lex(); - argument = parseAssignmentExpression(); - } else { - if (!match(';') && !match('}') && !match(')') && lookahead.type !== Token.EOF) { - argument = parseAssignmentExpression(); - } - } - state.allowYield = previousAllowYield; - } - - return expr.finishYieldExpression(argument, delegate); - } - - // ECMA-262 12.14 Assignment Operators - - function parseAssignmentExpression() { - var token, expr, right, list, startToken; - - startToken = lookahead; - token = lookahead; - - if (!state.allowYield && matchKeyword('yield')) { - return parseYieldExpression(); - } - - expr = parseConditionalExpression(); - - if (expr.type === PlaceHolders.ArrowParameterPlaceHolder || match('=>')) { - isAssignmentTarget = isBindingElement = false; - list = reinterpretAsCoverFormalsList(expr); - - if (list) { - firstCoverInitializedNameError = null; - return parseArrowFunctionExpression(list, new WrappingNode(startToken)); - } - - return expr; - } - - if (matchAssign()) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInAssignment); - } - - // ECMA-262 12.1.1 - if (strict && expr.type === Syntax.Identifier) { - if (isRestrictedWord(expr.name)) { - tolerateUnexpectedToken(token, Messages.StrictLHSAssignment); - } - if (isStrictModeReservedWord(expr.name)) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } - } - - if (!match('=')) { - isAssignmentTarget = isBindingElement = false; - } else { - reinterpretExpressionAsPattern(expr); - } - - token = lex(); - right = isolateCoverGrammar(parseAssignmentExpression); - expr = new WrappingNode(startToken).finishAssignmentExpression(token.value, expr, right); - firstCoverInitializedNameError = null; - } - - return expr; - } - - // ECMA-262 12.15 Comma Operator - - function parseExpression() { - var expr, startToken = lookahead, expressions; - - expr = isolateCoverGrammar(parseAssignmentExpression); - - if (match(',')) { - expressions = [expr]; - - while (startIndex < length) { - if (!match(',')) { - break; - } - lex(); - expressions.push(isolateCoverGrammar(parseAssignmentExpression)); - } - - expr = new WrappingNode(startToken).finishSequenceExpression(expressions); - } - - return expr; - } - - // ECMA-262 13.2 Block - - function parseStatementListItem() { - if (lookahead.type === Token.Keyword) { - switch (lookahead.value) { - case 'export': - if (state.sourceType !== 'module') { - tolerateUnexpectedToken(lookahead, Messages.IllegalExportDeclaration); - } - return parseExportDeclaration(); - case 'import': - if (state.sourceType !== 'module') { - tolerateUnexpectedToken(lookahead, Messages.IllegalImportDeclaration); - } - return parseImportDeclaration(); - case 'const': - return parseLexicalDeclaration({inFor: false}); - case 'function': - return parseFunctionDeclaration(new Node()); - case 'class': - return parseClassDeclaration(); - } - } - - if (matchKeyword('let') && isLexicalDeclaration()) { - return parseLexicalDeclaration({inFor: false}); - } - - return parseStatement(); - } - - function parseStatementList() { - var list = []; - while (startIndex < length) { - if (match('}')) { - break; - } - list.push(parseStatementListItem()); - } - - return list; - } - - function parseBlock() { - var block, node = new Node(); - - expect('{'); - - block = parseStatementList(); - - expect('}'); - - return node.finishBlockStatement(block); - } - - // ECMA-262 13.3.2 Variable Statement - - function parseVariableIdentifier(kind) { - var token, node = new Node(); - - token = lex(); - - if (token.type === Token.Keyword && token.value === 'yield') { - if (strict) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } if (!state.allowYield) { - throwUnexpectedToken(token); - } - } else if (token.type !== Token.Identifier) { - if (strict && token.type === Token.Keyword && isStrictModeReservedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictReservedWord); - } else { - if (strict || token.value !== 'let' || kind !== 'var') { - throwUnexpectedToken(token); - } - } - } else if (state.sourceType === 'module' && token.type === Token.Identifier && token.value === 'await') { - tolerateUnexpectedToken(token); - } - - return node.finishIdentifier(token.value); - } - - function parseVariableDeclaration(options) { - var init = null, id, node = new Node(), params = []; - - id = parsePattern(params, 'var'); - - // ECMA-262 12.2.1 - if (strict && isRestrictedWord(id.name)) { - tolerateError(Messages.StrictVarName); - } - - if (match('=')) { - lex(); - init = isolateCoverGrammar(parseAssignmentExpression); - } else if (id.type !== Syntax.Identifier && !options.inFor) { - expect('='); - } - - return node.finishVariableDeclarator(id, init); - } - - function parseVariableDeclarationList(options) { - var list = []; - - do { - list.push(parseVariableDeclaration({ inFor: options.inFor })); - if (!match(',')) { - break; - } - lex(); - } while (startIndex < length); - - return list; - } - - function parseVariableStatement(node) { - var declarations; - - expectKeyword('var'); - - declarations = parseVariableDeclarationList({ inFor: false }); - - consumeSemicolon(); - - return node.finishVariableDeclaration(declarations); - } - - // ECMA-262 13.3.1 Let and Const Declarations - - function parseLexicalBinding(kind, options) { - var init = null, id, node = new Node(), params = []; - - id = parsePattern(params, kind); - - // ECMA-262 12.2.1 - if (strict && id.type === Syntax.Identifier && isRestrictedWord(id.name)) { - tolerateError(Messages.StrictVarName); - } - - if (kind === 'const') { - if (!matchKeyword('in') && !matchContextualKeyword('of')) { - expect('='); - init = isolateCoverGrammar(parseAssignmentExpression); - } - } else if ((!options.inFor && id.type !== Syntax.Identifier) || match('=')) { - expect('='); - init = isolateCoverGrammar(parseAssignmentExpression); - } - - return node.finishVariableDeclarator(id, init); - } - - function parseBindingList(kind, options) { - var list = []; - - do { - list.push(parseLexicalBinding(kind, options)); - if (!match(',')) { - break; - } - lex(); - } while (startIndex < length); - - return list; - } - - - function tokenizerState() { - return { - index: index, - lineNumber: lineNumber, - lineStart: lineStart, - hasLineTerminator: hasLineTerminator, - lastIndex: lastIndex, - lastLineNumber: lastLineNumber, - lastLineStart: lastLineStart, - startIndex: startIndex, - startLineNumber: startLineNumber, - startLineStart: startLineStart, - lookahead: lookahead, - tokenCount: extra.tokens ? extra.tokens.length : 0 - }; - } - - function resetTokenizerState(ts) { - index = ts.index; - lineNumber = ts.lineNumber; - lineStart = ts.lineStart; - hasLineTerminator = ts.hasLineTerminator; - lastIndex = ts.lastIndex; - lastLineNumber = ts.lastLineNumber; - lastLineStart = ts.lastLineStart; - startIndex = ts.startIndex; - startLineNumber = ts.startLineNumber; - startLineStart = ts.startLineStart; - lookahead = ts.lookahead; - if (extra.tokens) { - extra.tokens.splice(ts.tokenCount, extra.tokens.length); - } - } - - function isLexicalDeclaration() { - var lexical, ts; - - ts = tokenizerState(); - - lex(); - lexical = (lookahead.type === Token.Identifier) || match('[') || match('{') || - matchKeyword('let') || matchKeyword('yield'); - - resetTokenizerState(ts); - - return lexical; - } - - function parseLexicalDeclaration(options) { - var kind, declarations, node = new Node(); - - kind = lex().value; - assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const'); - - declarations = parseBindingList(kind, options); - - consumeSemicolon(); - - return node.finishLexicalDeclaration(declarations, kind); - } - - function parseRestElement(params) { - var param, node = new Node(); - - lex(); - - if (match('{')) { - throwError(Messages.ObjectPatternAsRestParameter); - } - - params.push(lookahead); - - param = parseVariableIdentifier(); - - if (match('=')) { - throwError(Messages.DefaultRestParameter); - } - - if (!match(')')) { - throwError(Messages.ParameterAfterRestParameter); - } - - return node.finishRestElement(param); - } - - // ECMA-262 13.4 Empty Statement - - function parseEmptyStatement(node) { - expect(';'); - return node.finishEmptyStatement(); - } - - // ECMA-262 12.4 Expression Statement - - function parseExpressionStatement(node) { - var expr = parseExpression(); - consumeSemicolon(); - return node.finishExpressionStatement(expr); - } - - // ECMA-262 13.6 If statement - - function parseIfStatement(node) { - var test, consequent, alternate; - - expectKeyword('if'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - consequent = parseStatement(); - - if (matchKeyword('else')) { - lex(); - alternate = parseStatement(); - } else { - alternate = null; - } - - return node.finishIfStatement(test, consequent, alternate); - } - - // ECMA-262 13.7 Iteration Statements - - function parseDoWhileStatement(node) { - var body, test, oldInIteration; - - expectKeyword('do'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = parseStatement(); - - state.inIteration = oldInIteration; - - expectKeyword('while'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - if (match(';')) { - lex(); - } - - return node.finishDoWhileStatement(body, test); - } - - function parseWhileStatement(node) { - var test, body, oldInIteration; - - expectKeyword('while'); - - expect('('); - - test = parseExpression(); - - expect(')'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = parseStatement(); - - state.inIteration = oldInIteration; - - return node.finishWhileStatement(test, body); - } - - function parseForStatement(node) { - var init, forIn, initSeq, initStartToken, test, update, left, right, kind, declarations, - body, oldInIteration, previousAllowIn = state.allowIn; - - init = test = update = null; - forIn = true; - - expectKeyword('for'); - - expect('('); - - if (match(';')) { - lex(); - } else { - if (matchKeyword('var')) { - init = new Node(); - lex(); - - state.allowIn = false; - declarations = parseVariableDeclarationList({ inFor: true }); - state.allowIn = previousAllowIn; - - if (declarations.length === 1 && matchKeyword('in')) { - init = init.finishVariableDeclaration(declarations); - lex(); - left = init; - right = parseExpression(); - init = null; - } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) { - init = init.finishVariableDeclaration(declarations); - lex(); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - init = init.finishVariableDeclaration(declarations); - expect(';'); - } - } else if (matchKeyword('const') || matchKeyword('let')) { - init = new Node(); - kind = lex().value; - - if (!strict && lookahead.value === 'in') { - init = init.finishIdentifier(kind); - lex(); - left = init; - right = parseExpression(); - init = null; - } else { - state.allowIn = false; - declarations = parseBindingList(kind, {inFor: true}); - state.allowIn = previousAllowIn; - - if (declarations.length === 1 && declarations[0].init === null && matchKeyword('in')) { - init = init.finishLexicalDeclaration(declarations, kind); - lex(); - left = init; - right = parseExpression(); - init = null; - } else if (declarations.length === 1 && declarations[0].init === null && matchContextualKeyword('of')) { - init = init.finishLexicalDeclaration(declarations, kind); - lex(); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - consumeSemicolon(); - init = init.finishLexicalDeclaration(declarations, kind); - } - } - } else { - initStartToken = lookahead; - state.allowIn = false; - init = inheritCoverGrammar(parseAssignmentExpression); - state.allowIn = previousAllowIn; - - if (matchKeyword('in')) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInForIn); - } - - lex(); - reinterpretExpressionAsPattern(init); - left = init; - right = parseExpression(); - init = null; - } else if (matchContextualKeyword('of')) { - if (!isAssignmentTarget) { - tolerateError(Messages.InvalidLHSInForLoop); - } - - lex(); - reinterpretExpressionAsPattern(init); - left = init; - right = parseAssignmentExpression(); - init = null; - forIn = false; - } else { - if (match(',')) { - initSeq = [init]; - while (match(',')) { - lex(); - initSeq.push(isolateCoverGrammar(parseAssignmentExpression)); - } - init = new WrappingNode(initStartToken).finishSequenceExpression(initSeq); - } - expect(';'); - } - } - } - - if (typeof left === 'undefined') { - - if (!match(';')) { - test = parseExpression(); - } - expect(';'); - - if (!match(')')) { - update = parseExpression(); - } - } - - expect(')'); - - oldInIteration = state.inIteration; - state.inIteration = true; - - body = isolateCoverGrammar(parseStatement); - - state.inIteration = oldInIteration; - - return (typeof left === 'undefined') ? - node.finishForStatement(init, test, update, body) : - forIn ? node.finishForInStatement(left, right, body) : - node.finishForOfStatement(left, right, body); - } - - // ECMA-262 13.8 The continue statement - - function parseContinueStatement(node) { - var label = null, key; - - expectKeyword('continue'); - - // Optimize the most common form: 'continue;'. - if (source.charCodeAt(startIndex) === 0x3B) { - lex(); - - if (!state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(null); - } - - if (hasLineTerminator) { - if (!state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(null); - } - - if (lookahead.type === Token.Identifier) { - label = parseVariableIdentifier(); - - key = '$' + label.name; - if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.UnknownLabel, label.name); - } - } - - consumeSemicolon(); - - if (label === null && !state.inIteration) { - throwError(Messages.IllegalContinue); - } - - return node.finishContinueStatement(label); - } - - // ECMA-262 13.9 The break statement - - function parseBreakStatement(node) { - var label = null, key; - - expectKeyword('break'); - - // Catch the very common case first: immediately a semicolon (U+003B). - if (source.charCodeAt(lastIndex) === 0x3B) { - lex(); - - if (!(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - - return node.finishBreakStatement(null); - } - - if (hasLineTerminator) { - if (!(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - } else if (lookahead.type === Token.Identifier) { - label = parseVariableIdentifier(); - - key = '$' + label.name; - if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.UnknownLabel, label.name); - } - } - - consumeSemicolon(); - - if (label === null && !(state.inIteration || state.inSwitch)) { - throwError(Messages.IllegalBreak); - } - - return node.finishBreakStatement(label); - } - - // ECMA-262 13.10 The return statement - - function parseReturnStatement(node) { - var argument = null; - - expectKeyword('return'); - - if (!state.inFunctionBody) { - tolerateError(Messages.IllegalReturn); - } - - // 'return' followed by a space and an identifier is very common. - if (source.charCodeAt(lastIndex) === 0x20) { - if (isIdentifierStart(source.charCodeAt(lastIndex + 1))) { - argument = parseExpression(); - consumeSemicolon(); - return node.finishReturnStatement(argument); - } - } - - if (hasLineTerminator) { - // HACK - return node.finishReturnStatement(null); - } - - if (!match(';')) { - if (!match('}') && lookahead.type !== Token.EOF) { - argument = parseExpression(); - } - } - - consumeSemicolon(); - - return node.finishReturnStatement(argument); - } - - // ECMA-262 13.11 The with statement - - function parseWithStatement(node) { - var object, body; - - if (strict) { - tolerateError(Messages.StrictModeWith); - } - - expectKeyword('with'); - - expect('('); - - object = parseExpression(); - - expect(')'); - - body = parseStatement(); - - return node.finishWithStatement(object, body); - } - - // ECMA-262 13.12 The switch statement - - function parseSwitchCase() { - var test, consequent = [], statement, node = new Node(); - - if (matchKeyword('default')) { - lex(); - test = null; - } else { - expectKeyword('case'); - test = parseExpression(); - } - expect(':'); - - while (startIndex < length) { - if (match('}') || matchKeyword('default') || matchKeyword('case')) { - break; - } - statement = parseStatementListItem(); - consequent.push(statement); - } - - return node.finishSwitchCase(test, consequent); - } - - function parseSwitchStatement(node) { - var discriminant, cases, clause, oldInSwitch, defaultFound; - - expectKeyword('switch'); - - expect('('); - - discriminant = parseExpression(); - - expect(')'); - - expect('{'); - - cases = []; - - if (match('}')) { - lex(); - return node.finishSwitchStatement(discriminant, cases); - } - - oldInSwitch = state.inSwitch; - state.inSwitch = true; - defaultFound = false; - - while (startIndex < length) { - if (match('}')) { - break; - } - clause = parseSwitchCase(); - if (clause.test === null) { - if (defaultFound) { - throwError(Messages.MultipleDefaultsInSwitch); - } - defaultFound = true; - } - cases.push(clause); - } - - state.inSwitch = oldInSwitch; - - expect('}'); - - return node.finishSwitchStatement(discriminant, cases); - } - - // ECMA-262 13.14 The throw statement - - function parseThrowStatement(node) { - var argument; - - expectKeyword('throw'); - - if (hasLineTerminator) { - throwError(Messages.NewlineAfterThrow); - } - - argument = parseExpression(); - - consumeSemicolon(); - - return node.finishThrowStatement(argument); - } - - // ECMA-262 13.15 The try statement - - function parseCatchClause() { - var param, params = [], paramMap = {}, key, i, body, node = new Node(); - - expectKeyword('catch'); - - expect('('); - if (match(')')) { - throwUnexpectedToken(lookahead); - } - - param = parsePattern(params); - for (i = 0; i < params.length; i++) { - key = '$' + params[i].value; - if (Object.prototype.hasOwnProperty.call(paramMap, key)) { - tolerateError(Messages.DuplicateBinding, params[i].value); - } - paramMap[key] = true; - } - - // ECMA-262 12.14.1 - if (strict && isRestrictedWord(param.name)) { - tolerateError(Messages.StrictCatchVariable); - } - - expect(')'); - body = parseBlock(); - return node.finishCatchClause(param, body); - } - - function parseTryStatement(node) { - var block, handler = null, finalizer = null; - - expectKeyword('try'); - - block = parseBlock(); - - if (matchKeyword('catch')) { - handler = parseCatchClause(); - } - - if (matchKeyword('finally')) { - lex(); - finalizer = parseBlock(); - } - - if (!handler && !finalizer) { - throwError(Messages.NoCatchOrFinally); - } - - return node.finishTryStatement(block, handler, finalizer); - } - - // ECMA-262 13.16 The debugger statement - - function parseDebuggerStatement(node) { - expectKeyword('debugger'); - - consumeSemicolon(); - - return node.finishDebuggerStatement(); - } - - // 13 Statements - - function parseStatement() { - var type = lookahead.type, - expr, - labeledBody, - key, - node; - - if (type === Token.EOF) { - throwUnexpectedToken(lookahead); - } - - if (type === Token.Punctuator && lookahead.value === '{') { - return parseBlock(); - } - isAssignmentTarget = isBindingElement = true; - node = new Node(); - - if (type === Token.Punctuator) { - switch (lookahead.value) { - case ';': - return parseEmptyStatement(node); - case '(': - return parseExpressionStatement(node); - default: - break; - } - } else if (type === Token.Keyword) { - switch (lookahead.value) { - case 'break': - return parseBreakStatement(node); - case 'continue': - return parseContinueStatement(node); - case 'debugger': - return parseDebuggerStatement(node); - case 'do': - return parseDoWhileStatement(node); - case 'for': - return parseForStatement(node); - case 'function': - return parseFunctionDeclaration(node); - case 'if': - return parseIfStatement(node); - case 'return': - return parseReturnStatement(node); - case 'switch': - return parseSwitchStatement(node); - case 'throw': - return parseThrowStatement(node); - case 'try': - return parseTryStatement(node); - case 'var': - return parseVariableStatement(node); - case 'while': - return parseWhileStatement(node); - case 'with': - return parseWithStatement(node); - default: - break; - } - } - - expr = parseExpression(); - - // ECMA-262 12.12 Labelled Statements - if ((expr.type === Syntax.Identifier) && match(':')) { - lex(); - - key = '$' + expr.name; - if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) { - throwError(Messages.Redeclaration, 'Label', expr.name); - } - - state.labelSet[key] = true; - labeledBody = parseStatement(); - delete state.labelSet[key]; - return node.finishLabeledStatement(expr, labeledBody); - } - - consumeSemicolon(); - - return node.finishExpressionStatement(expr); - } - - // ECMA-262 14.1 Function Definition - - function parseFunctionSourceElements() { - var statement, body = [], token, directive, firstRestricted, - oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesisCount, - node = new Node(); - - expect('{'); - - while (startIndex < length) { - if (lookahead.type !== Token.StringLiteral) { - break; - } - token = lookahead; - - statement = parseStatementListItem(); - body.push(statement); - if (statement.expression.type !== Syntax.Literal) { - // this is not directive - break; - } - directive = source.slice(token.start + 1, token.end - 1); - if (directive === 'use strict') { - strict = true; - if (firstRestricted) { - tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); - } - } else { - if (!firstRestricted && token.octal) { - firstRestricted = token; - } - } - } - - oldLabelSet = state.labelSet; - oldInIteration = state.inIteration; - oldInSwitch = state.inSwitch; - oldInFunctionBody = state.inFunctionBody; - oldParenthesisCount = state.parenthesizedCount; - - state.labelSet = {}; - state.inIteration = false; - state.inSwitch = false; - state.inFunctionBody = true; - state.parenthesizedCount = 0; - - while (startIndex < length) { - if (match('}')) { - break; - } - body.push(parseStatementListItem()); - } - - expect('}'); - - state.labelSet = oldLabelSet; - state.inIteration = oldInIteration; - state.inSwitch = oldInSwitch; - state.inFunctionBody = oldInFunctionBody; - state.parenthesizedCount = oldParenthesisCount; - - return node.finishBlockStatement(body); - } - - function validateParam(options, param, name) { - var key = '$' + name; - if (strict) { - if (isRestrictedWord(name)) { - options.stricted = param; - options.message = Messages.StrictParamName; - } - if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { - options.stricted = param; - options.message = Messages.StrictParamDupe; - } - } else if (!options.firstRestricted) { - if (isRestrictedWord(name)) { - options.firstRestricted = param; - options.message = Messages.StrictParamName; - } else if (isStrictModeReservedWord(name)) { - options.firstRestricted = param; - options.message = Messages.StrictReservedWord; - } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { - options.stricted = param; - options.message = Messages.StrictParamDupe; - } - } - options.paramSet[key] = true; - } - - function parseParam(options) { - var token, param, params = [], i, def; - - token = lookahead; - if (token.value === '...') { - param = parseRestElement(params); - validateParam(options, param.argument, param.argument.name); - options.params.push(param); - options.defaults.push(null); - return false; - } - - param = parsePatternWithDefault(params); - for (i = 0; i < params.length; i++) { - validateParam(options, params[i], params[i].value); - } - - if (param.type === Syntax.AssignmentPattern) { - def = param.right; - param = param.left; - ++options.defaultCount; - } - - options.params.push(param); - options.defaults.push(def); - - return !match(')'); - } - - function parseParams(firstRestricted) { - var options; - - options = { - params: [], - defaultCount: 0, - defaults: [], - firstRestricted: firstRestricted - }; - - expect('('); - - if (!match(')')) { - options.paramSet = {}; - while (startIndex < length) { - if (!parseParam(options)) { - break; - } - expect(','); - } - } - - expect(')'); - - if (options.defaultCount === 0) { - options.defaults = []; - } - - return { - params: options.params, - defaults: options.defaults, - stricted: options.stricted, - firstRestricted: options.firstRestricted, - message: options.message - }; - } - - function parseFunctionDeclaration(node, identifierIsOptional) { - var id = null, params = [], defaults = [], body, token, stricted, tmp, firstRestricted, message, previousStrict, - isGenerator, previousAllowYield; - - previousAllowYield = state.allowYield; - - expectKeyword('function'); - - isGenerator = match('*'); - if (isGenerator) { - lex(); - } - - if (!identifierIsOptional || !match('(')) { - token = lookahead; - id = parseVariableIdentifier(); - if (strict) { - if (isRestrictedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictFunctionName); - } - } else { - if (isRestrictedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictFunctionName; - } else if (isStrictModeReservedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictReservedWord; - } - } - } - - state.allowYield = !isGenerator; - tmp = parseParams(firstRestricted); - params = tmp.params; - defaults = tmp.defaults; - stricted = tmp.stricted; - firstRestricted = tmp.firstRestricted; - if (tmp.message) { - message = tmp.message; - } - - - previousStrict = strict; - body = parseFunctionSourceElements(); - if (strict && firstRestricted) { - throwUnexpectedToken(firstRestricted, message); - } - if (strict && stricted) { - tolerateUnexpectedToken(stricted, message); - } - - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishFunctionDeclaration(id, params, defaults, body, isGenerator); - } - - function parseFunctionExpression() { - var token, id = null, stricted, firstRestricted, message, tmp, - params = [], defaults = [], body, previousStrict, node = new Node(), - isGenerator, previousAllowYield; - - previousAllowYield = state.allowYield; - - expectKeyword('function'); - - isGenerator = match('*'); - if (isGenerator) { - lex(); - } - - state.allowYield = !isGenerator; - if (!match('(')) { - token = lookahead; - id = (!strict && !isGenerator && matchKeyword('yield')) ? parseNonComputedProperty() : parseVariableIdentifier(); - if (strict) { - if (isRestrictedWord(token.value)) { - tolerateUnexpectedToken(token, Messages.StrictFunctionName); - } - } else { - if (isRestrictedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictFunctionName; - } else if (isStrictModeReservedWord(token.value)) { - firstRestricted = token; - message = Messages.StrictReservedWord; - } - } - } - - tmp = parseParams(firstRestricted); - params = tmp.params; - defaults = tmp.defaults; - stricted = tmp.stricted; - firstRestricted = tmp.firstRestricted; - if (tmp.message) { - message = tmp.message; - } - - previousStrict = strict; - body = parseFunctionSourceElements(); - if (strict && firstRestricted) { - throwUnexpectedToken(firstRestricted, message); - } - if (strict && stricted) { - tolerateUnexpectedToken(stricted, message); - } - strict = previousStrict; - state.allowYield = previousAllowYield; - - return node.finishFunctionExpression(id, params, defaults, body, isGenerator); - } - - // ECMA-262 14.5 Class Definitions - - function parseClassBody() { - var classBody, token, isStatic, hasConstructor = false, body, method, computed, key; - - classBody = new Node(); - - expect('{'); - body = []; - while (!match('}')) { - if (match(';')) { - lex(); - } else { - method = new Node(); - token = lookahead; - isStatic = false; - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - if (key.name === 'static' && (lookaheadPropertyName() || match('*'))) { - token = lookahead; - isStatic = true; - computed = match('['); - if (match('*')) { - lex(); - } else { - key = parseObjectPropertyKey(); - } - } - } - method = tryParseMethodDefinition(token, key, computed, method); - if (method) { - method['static'] = isStatic; // jscs:ignore requireDotNotation - if (method.kind === 'init') { - method.kind = 'method'; - } - if (!isStatic) { - if (!method.computed && (method.key.name || method.key.value.toString()) === 'constructor') { - if (method.kind !== 'method' || !method.method || method.value.generator) { - throwUnexpectedToken(token, Messages.ConstructorSpecialMethod); - } - if (hasConstructor) { - throwUnexpectedToken(token, Messages.DuplicateConstructor); - } else { - hasConstructor = true; - } - method.kind = 'constructor'; - } - } else { - if (!method.computed && (method.key.name || method.key.value.toString()) === 'prototype') { - throwUnexpectedToken(token, Messages.StaticPrototype); - } - } - method.type = Syntax.MethodDefinition; - delete method.method; - delete method.shorthand; - body.push(method); - } else { - throwUnexpectedToken(lookahead); - } - } - } - lex(); - return classBody.finishClassBody(body); - } - - function parseClassDeclaration(identifierIsOptional) { - var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict; - strict = true; - - expectKeyword('class'); - - if (!identifierIsOptional || lookahead.type === Token.Identifier) { - id = parseVariableIdentifier(); - } - - if (matchKeyword('extends')) { - lex(); - superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall); - } - classBody = parseClassBody(); - strict = previousStrict; - - return classNode.finishClassDeclaration(id, superClass, classBody); - } - - function parseClassExpression() { - var id = null, superClass = null, classNode = new Node(), classBody, previousStrict = strict; - strict = true; - - expectKeyword('class'); - - if (lookahead.type === Token.Identifier) { - id = parseVariableIdentifier(); - } - - if (matchKeyword('extends')) { - lex(); - superClass = isolateCoverGrammar(parseLeftHandSideExpressionAllowCall); - } - classBody = parseClassBody(); - strict = previousStrict; - - return classNode.finishClassExpression(id, superClass, classBody); - } - - // ECMA-262 15.2 Modules - - function parseModuleSpecifier() { - var node = new Node(); - - if (lookahead.type !== Token.StringLiteral) { - throwError(Messages.InvalidModuleSpecifier); - } - return node.finishLiteral(lex()); - } - - // ECMA-262 15.2.3 Exports - - function parseExportSpecifier() { - var exported, local, node = new Node(), def; - if (matchKeyword('default')) { - // export {default} from 'something'; - def = new Node(); - lex(); - local = def.finishIdentifier('default'); - } else { - local = parseVariableIdentifier(); - } - if (matchContextualKeyword('as')) { - lex(); - exported = parseNonComputedProperty(); - } - return node.finishExportSpecifier(local, exported); - } - - function parseExportNamedDeclaration(node) { - var declaration = null, - isExportFromIdentifier, - src = null, specifiers = []; - - // non-default export - if (lookahead.type === Token.Keyword) { - // covers: - // export var f = 1; - switch (lookahead.value) { - case 'let': - case 'const': - declaration = parseLexicalDeclaration({inFor: false}); - return node.finishExportNamedDeclaration(declaration, specifiers, null); - case 'var': - case 'class': - case 'function': - declaration = parseStatementListItem(); - return node.finishExportNamedDeclaration(declaration, specifiers, null); - } - } - - expect('{'); - while (!match('}')) { - isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default'); - specifiers.push(parseExportSpecifier()); - if (!match('}')) { - expect(','); - if (match('}')) { - break; - } - } - } - expect('}'); - - if (matchContextualKeyword('from')) { - // covering: - // export {default} from 'foo'; - // export {foo} from 'foo'; - lex(); - src = parseModuleSpecifier(); - consumeSemicolon(); - } else if (isExportFromIdentifier) { - // covering: - // export {default}; // missing fromClause - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } else { - // cover - // export {foo}; - consumeSemicolon(); - } - return node.finishExportNamedDeclaration(declaration, specifiers, src); - } - - function parseExportDefaultDeclaration(node) { - var declaration = null, - expression = null; - - // covers: - // export default ... - expectKeyword('default'); - - if (matchKeyword('function')) { - // covers: - // export default function foo () {} - // export default function () {} - declaration = parseFunctionDeclaration(new Node(), true); - return node.finishExportDefaultDeclaration(declaration); - } - if (matchKeyword('class')) { - declaration = parseClassDeclaration(true); - return node.finishExportDefaultDeclaration(declaration); - } - - if (matchContextualKeyword('from')) { - throwError(Messages.UnexpectedToken, lookahead.value); - } - - // covers: - // export default {}; - // export default []; - // export default (1 + 2); - if (match('{')) { - expression = parseObjectInitializer(); - } else if (match('[')) { - expression = parseArrayInitializer(); - } else { - expression = parseAssignmentExpression(); - } - consumeSemicolon(); - return node.finishExportDefaultDeclaration(expression); - } - - function parseExportAllDeclaration(node) { - var src; - - // covers: - // export * from 'foo'; - expect('*'); - if (!matchContextualKeyword('from')) { - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } - lex(); - src = parseModuleSpecifier(); - consumeSemicolon(); - - return node.finishExportAllDeclaration(src); - } - - function parseExportDeclaration() { - var node = new Node(); - if (state.inFunctionBody) { - throwError(Messages.IllegalExportDeclaration); - } - - expectKeyword('export'); - - if (matchKeyword('default')) { - return parseExportDefaultDeclaration(node); - } - if (match('*')) { - return parseExportAllDeclaration(node); - } - return parseExportNamedDeclaration(node); - } - - // ECMA-262 15.2.2 Imports - - function parseImportSpecifier() { - // import {} ...; - var local, imported, node = new Node(); - - imported = parseNonComputedProperty(); - if (matchContextualKeyword('as')) { - lex(); - local = parseVariableIdentifier(); - } - - return node.finishImportSpecifier(local, imported); - } - - function parseNamedImports() { - var specifiers = []; - // {foo, bar as bas} - expect('{'); - while (!match('}')) { - specifiers.push(parseImportSpecifier()); - if (!match('}')) { - expect(','); - if (match('}')) { - break; - } - } - } - expect('}'); - return specifiers; - } - - function parseImportDefaultSpecifier() { - // import ...; - var local, node = new Node(); - - local = parseNonComputedProperty(); - - return node.finishImportDefaultSpecifier(local); - } - - function parseImportNamespaceSpecifier() { - // import <* as foo> ...; - var local, node = new Node(); - - expect('*'); - if (!matchContextualKeyword('as')) { - throwError(Messages.NoAsAfterImportNamespace); - } - lex(); - local = parseNonComputedProperty(); - - return node.finishImportNamespaceSpecifier(local); - } - - function parseImportDeclaration() { - var specifiers = [], src, node = new Node(); - - if (state.inFunctionBody) { - throwError(Messages.IllegalImportDeclaration); - } - - expectKeyword('import'); - - if (lookahead.type === Token.StringLiteral) { - // import 'foo'; - src = parseModuleSpecifier(); - } else { - - if (match('{')) { - // import {bar} - specifiers = specifiers.concat(parseNamedImports()); - } else if (match('*')) { - // import * as foo - specifiers.push(parseImportNamespaceSpecifier()); - } else if (isIdentifierName(lookahead) && !matchKeyword('default')) { - // import foo - specifiers.push(parseImportDefaultSpecifier()); - if (match(',')) { - lex(); - if (match('*')) { - // import foo, * as foo - specifiers.push(parseImportNamespaceSpecifier()); - } else if (match('{')) { - // import foo, {bar} - specifiers = specifiers.concat(parseNamedImports()); - } else { - throwUnexpectedToken(lookahead); - } - } - } else { - throwUnexpectedToken(lex()); - } - - if (!matchContextualKeyword('from')) { - throwError(lookahead.value ? - Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value); - } - lex(); - src = parseModuleSpecifier(); - } - - consumeSemicolon(); - return node.finishImportDeclaration(specifiers, src); - } - - // ECMA-262 15.1 Scripts - - function parseScriptBody() { - var statement, body = [], token, directive, firstRestricted; - - while (startIndex < length) { - token = lookahead; - if (token.type !== Token.StringLiteral) { - break; - } - - statement = parseStatementListItem(); - body.push(statement); - if (statement.expression.type !== Syntax.Literal) { - // this is not directive - break; - } - directive = source.slice(token.start + 1, token.end - 1); - if (directive === 'use strict') { - strict = true; - if (firstRestricted) { - tolerateUnexpectedToken(firstRestricted, Messages.StrictOctalLiteral); - } - } else { - if (!firstRestricted && token.octal) { - firstRestricted = token; - } - } - } - - while (startIndex < length) { - statement = parseStatementListItem(); - /* istanbul ignore if */ - if (typeof statement === 'undefined') { - break; - } - body.push(statement); - } - return body; - } - - function parseProgram() { - var body, node; - - peek(); - node = new Node(); - - body = parseScriptBody(); - return node.finishProgram(body, state.sourceType); - } - - function filterTokenLocation() { - var i, entry, token, tokens = []; - - for (i = 0; i < extra.tokens.length; ++i) { - entry = extra.tokens[i]; - token = { - type: entry.type, - value: entry.value - }; - if (entry.regex) { - token.regex = { - pattern: entry.regex.pattern, - flags: entry.regex.flags - }; - } - if (extra.range) { - token.range = entry.range; - } - if (extra.loc) { - token.loc = entry.loc; - } - tokens.push(token); - } - - extra.tokens = tokens; - } - - function tokenize(code, options, delegate) { - var toString, - tokens; - - toString = String; - if (typeof code !== 'string' && !(code instanceof String)) { - code = toString(code); - } - - source = code; - index = 0; - lineNumber = (source.length > 0) ? 1 : 0; - lineStart = 0; - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - length = source.length; - lookahead = null; - state = { - allowIn: true, - allowYield: true, - labelSet: {}, - inFunctionBody: false, - inIteration: false, - inSwitch: false, - lastCommentStart: -1, - curlyStack: [] - }; - - extra = {}; - - // Options matching. - options = options || {}; - - // Of course we collect tokens here. - options.tokens = true; - extra.tokens = []; - extra.tokenValues = []; - extra.tokenize = true; - extra.delegate = delegate; - - // The following two fields are necessary to compute the Regex tokens. - extra.openParenToken = -1; - extra.openCurlyToken = -1; - - extra.range = (typeof options.range === 'boolean') && options.range; - extra.loc = (typeof options.loc === 'boolean') && options.loc; - - if (typeof options.comment === 'boolean' && options.comment) { - extra.comments = []; - } - if (typeof options.tolerant === 'boolean' && options.tolerant) { - extra.errors = []; - } - - try { - peek(); - if (lookahead.type === Token.EOF) { - return extra.tokens; - } - - lex(); - while (lookahead.type !== Token.EOF) { - try { - lex(); - } catch (lexError) { - if (extra.errors) { - recordError(lexError); - // We have to break on the first error - // to avoid infinite loops. - break; - } else { - throw lexError; - } - } - } - - tokens = extra.tokens; - if (typeof extra.errors !== 'undefined') { - tokens.errors = extra.errors; - } - } catch (e) { - throw e; - } finally { - extra = {}; - } - return tokens; - } - - function parse(code, options) { - var program, toString; - - toString = String; - if (typeof code !== 'string' && !(code instanceof String)) { - code = toString(code); - } - - source = code; - index = 0; - lineNumber = (source.length > 0) ? 1 : 0; - lineStart = 0; - startIndex = index; - startLineNumber = lineNumber; - startLineStart = lineStart; - length = source.length; - lookahead = null; - state = { - allowIn: true, - allowYield: true, - labelSet: {}, - inFunctionBody: false, - inIteration: false, - inSwitch: false, - lastCommentStart: -1, - curlyStack: [], - sourceType: 'script' - }; - strict = false; - - extra = {}; - if (typeof options !== 'undefined') { - extra.range = (typeof options.range === 'boolean') && options.range; - extra.loc = (typeof options.loc === 'boolean') && options.loc; - extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment; - - if (extra.loc && options.source !== null && options.source !== undefined) { - extra.source = toString(options.source); - } - - if (typeof options.tokens === 'boolean' && options.tokens) { - extra.tokens = []; - } - if (typeof options.comment === 'boolean' && options.comment) { - extra.comments = []; - } - if (typeof options.tolerant === 'boolean' && options.tolerant) { - extra.errors = []; - } - if (extra.attachComment) { - extra.range = true; - extra.comments = []; - extra.bottomRightStack = []; - extra.trailingComments = []; - extra.leadingComments = []; - } - if (options.sourceType === 'module') { - // very restrictive condition for now - state.sourceType = options.sourceType; - strict = true; - } - } - - try { - program = parseProgram(); - if (typeof extra.comments !== 'undefined') { - program.comments = extra.comments; - } - if (typeof extra.tokens !== 'undefined') { - filterTokenLocation(); - program.tokens = extra.tokens; - } - if (typeof extra.errors !== 'undefined') { - program.errors = extra.errors; - } - } catch (e) { - throw e; - } finally { - extra = {}; - } - - return program; - } - - // Sync with *.json manifests. - exports.version = '2.7.0'; - - exports.tokenize = tokenize; - - exports.parse = parse; - - // Deep copy. - /* istanbul ignore next */ - exports.Syntax = (function () { - var name, types = {}; - - if (typeof Object.create === 'function') { - types = Object.create(null); - } - - for (name in Syntax) { - if (Syntax.hasOwnProperty(name)) { - types[name] = Syntax[name]; - } - } - - if (typeof Object.freeze === 'function') { - Object.freeze(types); - } - - return types; - }()); - -})); -/* vim: set sw=4 ts=4 et tw=80 : */ -/** - * @license Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -/*global define, Reflect */ - -/* - * xpcshell has a smaller stack on linux and windows (1MB vs 9MB on mac), - * and the recursive nature of esprima can cause it to overflow pretty - * quickly. So favor it built in Reflect parser: - * https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API - */ -define('esprimaAdapter', ['./esprima', 'env'], function (esprima, env) { - if (env.get() === 'xpconnect' && typeof Reflect !== 'undefined') { - return Reflect; - } else { - return esprima; - } -}); -(function webpackUniversalModuleDefinition(root, factory) { -var exports, module; - if(typeof exports === 'object' && typeof module === 'object') - module.exports = factory(); - else if(typeof define === 'function' && define.amd) - define('source-map', [], factory); - else if(typeof exports === 'object') - exports["sourceMap"] = factory(); - else - root["sourceMap"] = factory(); -})(this, function() { -return /******/ (function(modules) { // webpackBootstrap -/******/ // The module cache -/******/ var installedModules = {}; - -/******/ // The require function -/******/ function __webpack_require__(moduleId) { - -/******/ // Check if module is in cache -/******/ if(installedModules[moduleId]) -/******/ return installedModules[moduleId].exports; - -/******/ // Create a new module (and put it into the cache) -/******/ var module = installedModules[moduleId] = { -/******/ exports: {}, -/******/ id: moduleId, -/******/ loaded: false -/******/ }; - -/******/ // Execute the module function -/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); - -/******/ // Flag the module as loaded -/******/ module.loaded = true; - -/******/ // Return the exports of the module -/******/ return module.exports; -/******/ } - - -/******/ // expose the modules object (__webpack_modules__) -/******/ __webpack_require__.m = modules; - -/******/ // expose the module cache -/******/ __webpack_require__.c = installedModules; - -/******/ // __webpack_public_path__ -/******/ __webpack_require__.p = ""; - -/******/ // Load entry module and return exports -/******/ return __webpack_require__(0); -/******/ }) -/************************************************************************/ -/******/ ([ -/* 0 */ -/***/ function(module, exports, __webpack_require__) { - - /* - * Copyright 2009-2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE.txt or: - * http://opensource.org/licenses/BSD-3-Clause - */ - exports.SourceMapGenerator = __webpack_require__(1).SourceMapGenerator; - exports.SourceMapConsumer = __webpack_require__(7).SourceMapConsumer; - exports.SourceNode = __webpack_require__(10).SourceNode; - - -/***/ }, -/* 1 */ -/***/ function(module, exports, __webpack_require__) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - var base64VLQ = __webpack_require__(2); - var util = __webpack_require__(4); - var ArraySet = __webpack_require__(5).ArraySet; - var MappingList = __webpack_require__(6).MappingList; - - /** - * An instance of the SourceMapGenerator represents a source map which is - * being built incrementally. You may pass an object with the following - * properties: - * - * - file: The filename of the generated source. - * - sourceRoot: A root for all relative URLs in this source map. - */ - function SourceMapGenerator(aArgs) { - if (!aArgs) { - aArgs = {}; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var assert_1 = __webpack_require__(9); + var error_handler_1 = __webpack_require__(10); + var messages_1 = __webpack_require__(11); + var Node = __webpack_require__(7); + var scanner_1 = __webpack_require__(12); + var syntax_1 = __webpack_require__(2); + var token_1 = __webpack_require__(13); + var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder'; + var Parser = (function () { + function Parser(code, options, delegate) { + if (options === void 0) { options = {}; } + this.config = { + range: (typeof options.range === 'boolean') && options.range, + loc: (typeof options.loc === 'boolean') && options.loc, + source: null, + tokens: (typeof options.tokens === 'boolean') && options.tokens, + comment: (typeof options.comment === 'boolean') && options.comment, + tolerant: (typeof options.tolerant === 'boolean') && options.tolerant + }; + if (this.config.loc && options.source && options.source !== null) { + this.config.source = String(options.source); + } + this.delegate = delegate; + this.errorHandler = new error_handler_1.ErrorHandler(); + this.errorHandler.tolerant = this.config.tolerant; + this.scanner = new scanner_1.Scanner(code, this.errorHandler); + this.scanner.trackComment = this.config.comment; + this.operatorPrecedence = { + ')': 0, + ';': 0, + ',': 0, + '=': 0, + ']': 0, + '||': 1, + '&&': 2, + '|': 3, + '^': 4, + '&': 5, + '==': 6, + '!=': 6, + '===': 6, + '!==': 6, + '<': 7, + '>': 7, + '<=': 7, + '>=': 7, + '<<': 8, + '>>': 8, + '>>>': 8, + '+': 9, + '-': 9, + '*': 11, + '/': 11, + '%': 11 + }; + this.lookahead = { + type: 2 /* EOF */, + value: '', + lineNumber: this.scanner.lineNumber, + lineStart: 0, + start: 0, + end: 0 + }; + this.hasLineTerminator = false; + this.context = { + isModule: false, + await: false, + allowIn: true, + allowStrictDirective: true, + allowYield: true, + firstCoverInitializedNameError: null, + isAssignmentTarget: false, + isBindingElement: false, + inFunctionBody: false, + inIteration: false, + inSwitch: false, + labelSet: {}, + strict: false + }; + this.tokens = []; + this.startMarker = { + index: 0, + line: this.scanner.lineNumber, + column: 0 + }; + this.lastMarker = { + index: 0, + line: this.scanner.lineNumber, + column: 0 + }; + this.nextToken(); + this.lastMarker = { + index: this.scanner.index, + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + }; } - this._file = util.getArg(aArgs, 'file', null); - this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null); - this._skipValidation = util.getArg(aArgs, 'skipValidation', false); - this._sources = new ArraySet(); - this._names = new ArraySet(); - this._mappings = new MappingList(); - this._sourcesContents = null; - } - - SourceMapGenerator.prototype._version = 3; - - /** - * Creates a new SourceMapGenerator based on a SourceMapConsumer - * - * @param aSourceMapConsumer The SourceMap. - */ - SourceMapGenerator.fromSourceMap = - function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) { - var sourceRoot = aSourceMapConsumer.sourceRoot; - var generator = new SourceMapGenerator({ - file: aSourceMapConsumer.file, - sourceRoot: sourceRoot - }); - aSourceMapConsumer.eachMapping(function (mapping) { - var newMapping = { - generated: { - line: mapping.generatedLine, - column: mapping.generatedColumn - } + Parser.prototype.throwError = function (messageFormat) { + var values = []; + for (var _i = 1; _i < arguments.length; _i++) { + values[_i - 1] = arguments[_i]; + } + var args = Array.prototype.slice.call(arguments, 1); + var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { + assert_1.assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + }); + var index = this.lastMarker.index; + var line = this.lastMarker.line; + var column = this.lastMarker.column + 1; + throw this.errorHandler.createError(index, line, column, msg); + }; + Parser.prototype.tolerateError = function (messageFormat) { + var values = []; + for (var _i = 1; _i < arguments.length; _i++) { + values[_i - 1] = arguments[_i]; + } + var args = Array.prototype.slice.call(arguments, 1); + var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { + assert_1.assert(idx < args.length, 'Message reference must be in range'); + return args[idx]; + }); + var index = this.lastMarker.index; + var line = this.scanner.lineNumber; + var column = this.lastMarker.column + 1; + this.errorHandler.tolerateError(index, line, column, msg); + }; + // Throw an exception because of the token. + Parser.prototype.unexpectedTokenError = function (token, message) { + var msg = message || messages_1.Messages.UnexpectedToken; + var value; + if (token) { + if (!message) { + msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS : + (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier : + (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber : + (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString : + (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate : + messages_1.Messages.UnexpectedToken; + if (token.type === 4 /* Keyword */) { + if (this.scanner.isFutureReservedWord(token.value)) { + msg = messages_1.Messages.UnexpectedReserved; + } + else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) { + msg = messages_1.Messages.StrictReservedWord; + } + } + } + value = token.value; + } + else { + value = 'ILLEGAL'; + } + msg = msg.replace('%0', value); + if (token && typeof token.lineNumber === 'number') { + var index = token.start; + var line = token.lineNumber; + var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column; + var column = token.start - lastMarkerLineStart + 1; + return this.errorHandler.createError(index, line, column, msg); + } + else { + var index = this.lastMarker.index; + var line = this.lastMarker.line; + var column = this.lastMarker.column + 1; + return this.errorHandler.createError(index, line, column, msg); + } + }; + Parser.prototype.throwUnexpectedToken = function (token, message) { + throw this.unexpectedTokenError(token, message); + }; + Parser.prototype.tolerateUnexpectedToken = function (token, message) { + this.errorHandler.tolerate(this.unexpectedTokenError(token, message)); + }; + Parser.prototype.collectComments = function () { + if (!this.config.comment) { + this.scanner.scanComments(); + } + else { + var comments = this.scanner.scanComments(); + if (comments.length > 0 && this.delegate) { + for (var i = 0; i < comments.length; ++i) { + var e = comments[i]; + var node = void 0; + node = { + type: e.multiLine ? 'BlockComment' : 'LineComment', + value: this.scanner.source.slice(e.slice[0], e.slice[1]) + }; + if (this.config.range) { + node.range = e.range; + } + if (this.config.loc) { + node.loc = e.loc; + } + var metadata = { + start: { + line: e.loc.start.line, + column: e.loc.start.column, + offset: e.range[0] + }, + end: { + line: e.loc.end.line, + column: e.loc.end.column, + offset: e.range[1] + } + }; + this.delegate(node, metadata); + } + } + } + }; + // From internal representation to an external structure + Parser.prototype.getTokenRaw = function (token) { + return this.scanner.source.slice(token.start, token.end); + }; + Parser.prototype.convertToken = function (token) { + var t = { + type: token_1.TokenName[token.type], + value: this.getTokenRaw(token) + }; + if (this.config.range) { + t.range = [token.start, token.end]; + } + if (this.config.loc) { + t.loc = { + start: { + line: this.startMarker.line, + column: this.startMarker.column + }, + end: { + line: this.scanner.lineNumber, + column: this.scanner.index - this.scanner.lineStart + } + }; + } + if (token.type === 9 /* RegularExpression */) { + var pattern = token.pattern; + var flags = token.flags; + t.regex = { pattern: pattern, flags: flags }; + } + return t; + }; + Parser.prototype.nextToken = function () { + var token = this.lookahead; + this.lastMarker.index = this.scanner.index; + this.lastMarker.line = this.scanner.lineNumber; + this.lastMarker.column = this.scanner.index - this.scanner.lineStart; + this.collectComments(); + if (this.scanner.index !== this.startMarker.index) { + this.startMarker.index = this.scanner.index; + this.startMarker.line = this.scanner.lineNumber; + this.startMarker.column = this.scanner.index - this.scanner.lineStart; + } + var next = this.scanner.lex(); + this.hasLineTerminator = (token.lineNumber !== next.lineNumber); + if (next && this.context.strict && next.type === 3 /* Identifier */) { + if (this.scanner.isStrictModeReservedWord(next.value)) { + next.type = 4 /* Keyword */; + } + } + this.lookahead = next; + if (this.config.tokens && next.type !== 2 /* EOF */) { + this.tokens.push(this.convertToken(next)); + } + return token; + }; + Parser.prototype.nextRegexToken = function () { + this.collectComments(); + var token = this.scanner.scanRegExp(); + if (this.config.tokens) { + // Pop the previous token, '/' or '/=' + // This is added from the lookahead token. + this.tokens.pop(); + this.tokens.push(this.convertToken(token)); + } + // Prime the next lookahead. + this.lookahead = token; + this.nextToken(); + return token; + }; + Parser.prototype.createNode = function () { + return { + index: this.startMarker.index, + line: this.startMarker.line, + column: this.startMarker.column + }; + }; + Parser.prototype.startNode = function (token, lastLineStart) { + if (lastLineStart === void 0) { lastLineStart = 0; } + var column = token.start - token.lineStart; + var line = token.lineNumber; + if (column < 0) { + column += lastLineStart; + line--; + } + return { + index: token.start, + line: line, + column: column + }; + }; + Parser.prototype.finalize = function (marker, node) { + if (this.config.range) { + node.range = [marker.index, this.lastMarker.index]; + } + if (this.config.loc) { + node.loc = { + start: { + line: marker.line, + column: marker.column, + }, + end: { + line: this.lastMarker.line, + column: this.lastMarker.column + } + }; + if (this.config.source) { + node.loc.source = this.config.source; + } + } + if (this.delegate) { + var metadata = { + start: { + line: marker.line, + column: marker.column, + offset: marker.index + }, + end: { + line: this.lastMarker.line, + column: this.lastMarker.column, + offset: this.lastMarker.index + } + }; + this.delegate(node, metadata); + } + return node; + }; + // Expect the next token to match the specified punctuator. + // If not, an exception will be thrown. + Parser.prototype.expect = function (value) { + var token = this.nextToken(); + if (token.type !== 7 /* Punctuator */ || token.value !== value) { + this.throwUnexpectedToken(token); + } + }; + // Quietly expect a comma when in tolerant mode, otherwise delegates to expect(). + Parser.prototype.expectCommaSeparator = function () { + if (this.config.tolerant) { + var token = this.lookahead; + if (token.type === 7 /* Punctuator */ && token.value === ',') { + this.nextToken(); + } + else if (token.type === 7 /* Punctuator */ && token.value === ';') { + this.nextToken(); + this.tolerateUnexpectedToken(token); + } + else { + this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken); + } + } + else { + this.expect(','); + } + }; + // Expect the next token to match the specified keyword. + // If not, an exception will be thrown. + Parser.prototype.expectKeyword = function (keyword) { + var token = this.nextToken(); + if (token.type !== 4 /* Keyword */ || token.value !== keyword) { + this.throwUnexpectedToken(token); + } + }; + // Return true if the next token matches the specified punctuator. + Parser.prototype.match = function (value) { + return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value; + }; + // Return true if the next token matches the specified keyword + Parser.prototype.matchKeyword = function (keyword) { + return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword; + }; + // Return true if the next token matches the specified contextual keyword + // (where an identifier is sometimes a keyword depending on the context) + Parser.prototype.matchContextualKeyword = function (keyword) { + return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword; + }; + // Return true if the next token is an assignment operator + Parser.prototype.matchAssign = function () { + if (this.lookahead.type !== 7 /* Punctuator */) { + return false; + } + var op = this.lookahead.value; + return op === '=' || + op === '*=' || + op === '**=' || + op === '/=' || + op === '%=' || + op === '+=' || + op === '-=' || + op === '<<=' || + op === '>>=' || + op === '>>>=' || + op === '&=' || + op === '^=' || + op === '|='; + }; + // Cover grammar support. + // + // When an assignment expression position starts with an left parenthesis, the determination of the type + // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead) + // or the first comma. This situation also defers the determination of all the expressions nested in the pair. + // + // There are three productions that can be parsed in a parentheses pair that needs to be determined + // after the outermost pair is closed. They are: + // + // 1. AssignmentExpression + // 2. BindingElements + // 3. AssignmentTargets + // + // In order to avoid exponential backtracking, we use two flags to denote if the production can be + // binding element or assignment target. + // + // The three productions have the relationship: + // + // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression + // + // with a single exception that CoverInitializedName when used directly in an Expression, generates + // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the + // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair. + // + // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not + // effect the current flags. This means the production the parser parses is only used as an expression. Therefore + // the CoverInitializedName check is conducted. + // + // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates + // the flags outside of the parser. This means the production the parser parses is used as a part of a potential + // pattern. The CoverInitializedName check is deferred. + Parser.prototype.isolateCoverGrammar = function (parseFunction) { + var previousIsBindingElement = this.context.isBindingElement; + var previousIsAssignmentTarget = this.context.isAssignmentTarget; + var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; + this.context.isBindingElement = true; + this.context.isAssignmentTarget = true; + this.context.firstCoverInitializedNameError = null; + var result = parseFunction.call(this); + if (this.context.firstCoverInitializedNameError !== null) { + this.throwUnexpectedToken(this.context.firstCoverInitializedNameError); + } + this.context.isBindingElement = previousIsBindingElement; + this.context.isAssignmentTarget = previousIsAssignmentTarget; + this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError; + return result; + }; + Parser.prototype.inheritCoverGrammar = function (parseFunction) { + var previousIsBindingElement = this.context.isBindingElement; + var previousIsAssignmentTarget = this.context.isAssignmentTarget; + var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; + this.context.isBindingElement = true; + this.context.isAssignmentTarget = true; + this.context.firstCoverInitializedNameError = null; + var result = parseFunction.call(this); + this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement; + this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget; + this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError; + return result; + }; + Parser.prototype.consumeSemicolon = function () { + if (this.match(';')) { + this.nextToken(); + } + else if (!this.hasLineTerminator) { + if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) { + this.throwUnexpectedToken(this.lookahead); + } + this.lastMarker.index = this.startMarker.index; + this.lastMarker.line = this.startMarker.line; + this.lastMarker.column = this.startMarker.column; + } + }; + // https://tc39.github.io/ecma262/#sec-primary-expression + Parser.prototype.parsePrimaryExpression = function () { + var node = this.createNode(); + var expr; + var token, raw; + switch (this.lookahead.type) { + case 3 /* Identifier */: + if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') { + this.tolerateUnexpectedToken(this.lookahead); + } + expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value)); + break; + case 6 /* NumericLiteral */: + case 8 /* StringLiteral */: + if (this.context.strict && this.lookahead.octal) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(token.value, raw)); + break; + case 1 /* BooleanLiteral */: + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(token.value === 'true', raw)); + break; + case 5 /* NullLiteral */: + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + token = this.nextToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.Literal(null, raw)); + break; + case 10 /* Template */: + expr = this.parseTemplateLiteral(); + break; + case 7 /* Punctuator */: + switch (this.lookahead.value) { + case '(': + this.context.isBindingElement = false; + expr = this.inheritCoverGrammar(this.parseGroupExpression); + break; + case '[': + expr = this.inheritCoverGrammar(this.parseArrayInitializer); + break; + case '{': + expr = this.inheritCoverGrammar(this.parseObjectInitializer); + break; + case '/': + case '/=': + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + this.scanner.index = this.startMarker.index; + token = this.nextRegexToken(); + raw = this.getTokenRaw(token); + expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags)); + break; + default: + expr = this.throwUnexpectedToken(this.nextToken()); + } + break; + case 4 /* Keyword */: + if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) { + expr = this.parseIdentifierName(); + } + else if (!this.context.strict && this.matchKeyword('let')) { + expr = this.finalize(node, new Node.Identifier(this.nextToken().value)); + } + else { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + if (this.matchKeyword('function')) { + expr = this.parseFunctionExpression(); + } + else if (this.matchKeyword('this')) { + this.nextToken(); + expr = this.finalize(node, new Node.ThisExpression()); + } + else if (this.matchKeyword('class')) { + expr = this.parseClassExpression(); + } + else { + expr = this.throwUnexpectedToken(this.nextToken()); + } + } + break; + default: + expr = this.throwUnexpectedToken(this.nextToken()); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-array-initializer + Parser.prototype.parseSpreadElement = function () { + var node = this.createNode(); + this.expect('...'); + var arg = this.inheritCoverGrammar(this.parseAssignmentExpression); + return this.finalize(node, new Node.SpreadElement(arg)); + }; + Parser.prototype.parseArrayInitializer = function () { + var node = this.createNode(); + var elements = []; + this.expect('['); + while (!this.match(']')) { + if (this.match(',')) { + this.nextToken(); + elements.push(null); + } + else if (this.match('...')) { + var element = this.parseSpreadElement(); + if (!this.match(']')) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + this.expect(','); + } + elements.push(element); + } + else { + elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); + if (!this.match(']')) { + this.expect(','); + } + } + } + this.expect(']'); + return this.finalize(node, new Node.ArrayExpression(elements)); + }; + // https://tc39.github.io/ecma262/#sec-object-initializer + Parser.prototype.parsePropertyMethod = function (params) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = params.simple; + var body = this.isolateCoverGrammar(this.parseFunctionSourceElements); + if (this.context.strict && params.firstRestricted) { + this.tolerateUnexpectedToken(params.firstRestricted, params.message); + } + if (this.context.strict && params.stricted) { + this.tolerateUnexpectedToken(params.stricted, params.message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + return body; + }; + Parser.prototype.parsePropertyMethodFunction = function () { + var isGenerator = false; + var node = this.createNode(); + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var params = this.parseFormalParameters(); + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); + }; + Parser.prototype.parsePropertyMethodAsyncFunction = function () { + var node = this.createNode(); + var previousAllowYield = this.context.allowYield; + var previousAwait = this.context.await; + this.context.allowYield = false; + this.context.await = true; + var params = this.parseFormalParameters(); + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + this.context.await = previousAwait; + return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method)); + }; + Parser.prototype.parseObjectPropertyKey = function () { + var node = this.createNode(); + var token = this.nextToken(); + var key; + switch (token.type) { + case 8 /* StringLiteral */: + case 6 /* NumericLiteral */: + if (this.context.strict && token.octal) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral); + } + var raw = this.getTokenRaw(token); + key = this.finalize(node, new Node.Literal(token.value, raw)); + break; + case 3 /* Identifier */: + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 4 /* Keyword */: + key = this.finalize(node, new Node.Identifier(token.value)); + break; + case 7 /* Punctuator */: + if (token.value === '[') { + key = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.expect(']'); + } + else { + key = this.throwUnexpectedToken(token); + } + break; + default: + key = this.throwUnexpectedToken(token); + } + return key; + }; + Parser.prototype.isPropertyKey = function (key, value) { + return (key.type === syntax_1.Syntax.Identifier && key.name === value) || + (key.type === syntax_1.Syntax.Literal && key.value === value); + }; + Parser.prototype.parseObjectProperty = function (hasProto) { + var node = this.createNode(); + var token = this.lookahead; + var kind; + var key = null; + var value = null; + var computed = false; + var method = false; + var shorthand = false; + var isAsync = false; + if (token.type === 3 /* Identifier */) { + var id = token.value; + this.nextToken(); + computed = this.match('['); + isAsync = !this.hasLineTerminator && (id === 'async') && + !this.match(':') && !this.match('(') && !this.match('*') && !this.match(','); + key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id)); + } + else if (this.match('*')) { + this.nextToken(); + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + } + var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); + if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) { + kind = 'get'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.context.allowYield = false; + value = this.parseGetterMethod(); + } + else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) { + kind = 'set'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseSetterMethod(); + } + else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { + kind = 'init'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseGeneratorMethod(); + method = true; + } + else { + if (!key) { + this.throwUnexpectedToken(this.lookahead); + } + kind = 'init'; + if (this.match(':') && !isAsync) { + if (!computed && this.isPropertyKey(key, '__proto__')) { + if (hasProto.value) { + this.tolerateError(messages_1.Messages.DuplicateProtoProperty); + } + hasProto.value = true; + } + this.nextToken(); + value = this.inheritCoverGrammar(this.parseAssignmentExpression); + } + else if (this.match('(')) { + value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); + method = true; + } + else if (token.type === 3 /* Identifier */) { + var id = this.finalize(node, new Node.Identifier(token.value)); + if (this.match('=')) { + this.context.firstCoverInitializedNameError = this.lookahead; + this.nextToken(); + shorthand = true; + var init = this.isolateCoverGrammar(this.parseAssignmentExpression); + value = this.finalize(node, new Node.AssignmentPattern(id, init)); + } + else { + shorthand = true; + value = id; + } + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + } + return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand)); + }; + Parser.prototype.parseObjectInitializer = function () { + var node = this.createNode(); + this.expect('{'); + var properties = []; + var hasProto = { value: false }; + while (!this.match('}')) { + properties.push(this.parseObjectProperty(hasProto)); + if (!this.match('}')) { + this.expectCommaSeparator(); + } + } + this.expect('}'); + return this.finalize(node, new Node.ObjectExpression(properties)); + }; + // https://tc39.github.io/ecma262/#sec-template-literals + Parser.prototype.parseTemplateHead = function () { + assert_1.assert(this.lookahead.head, 'Template literal must start with a template head'); + var node = this.createNode(); + var token = this.nextToken(); + var raw = token.value; + var cooked = token.cooked; + return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); + }; + Parser.prototype.parseTemplateElement = function () { + if (this.lookahead.type !== 10 /* Template */) { + this.throwUnexpectedToken(); + } + var node = this.createNode(); + var token = this.nextToken(); + var raw = token.value; + var cooked = token.cooked; + return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); + }; + Parser.prototype.parseTemplateLiteral = function () { + var node = this.createNode(); + var expressions = []; + var quasis = []; + var quasi = this.parseTemplateHead(); + quasis.push(quasi); + while (!quasi.tail) { + expressions.push(this.parseExpression()); + quasi = this.parseTemplateElement(); + quasis.push(quasi); + } + return this.finalize(node, new Node.TemplateLiteral(quasis, expressions)); + }; + // https://tc39.github.io/ecma262/#sec-grouping-operator + Parser.prototype.reinterpretExpressionAsPattern = function (expr) { + switch (expr.type) { + case syntax_1.Syntax.Identifier: + case syntax_1.Syntax.MemberExpression: + case syntax_1.Syntax.RestElement: + case syntax_1.Syntax.AssignmentPattern: + break; + case syntax_1.Syntax.SpreadElement: + expr.type = syntax_1.Syntax.RestElement; + this.reinterpretExpressionAsPattern(expr.argument); + break; + case syntax_1.Syntax.ArrayExpression: + expr.type = syntax_1.Syntax.ArrayPattern; + for (var i = 0; i < expr.elements.length; i++) { + if (expr.elements[i] !== null) { + this.reinterpretExpressionAsPattern(expr.elements[i]); + } + } + break; + case syntax_1.Syntax.ObjectExpression: + expr.type = syntax_1.Syntax.ObjectPattern; + for (var i = 0; i < expr.properties.length; i++) { + this.reinterpretExpressionAsPattern(expr.properties[i].value); + } + break; + case syntax_1.Syntax.AssignmentExpression: + expr.type = syntax_1.Syntax.AssignmentPattern; + delete expr.operator; + this.reinterpretExpressionAsPattern(expr.left); + break; + default: + // Allow other node type for tolerant parsing. + break; + } + }; + Parser.prototype.parseGroupExpression = function () { + var expr; + this.expect('('); + if (this.match(')')) { + this.nextToken(); + if (!this.match('=>')) { + this.expect('=>'); + } + expr = { + type: ArrowParameterPlaceHolder, + params: [], + async: false + }; + } + else { + var startToken = this.lookahead; + var params = []; + if (this.match('...')) { + expr = this.parseRestElement(params); + this.expect(')'); + if (!this.match('=>')) { + this.expect('=>'); + } + expr = { + type: ArrowParameterPlaceHolder, + params: [expr], + async: false + }; + } + else { + var arrow = false; + this.context.isBindingElement = true; + expr = this.inheritCoverGrammar(this.parseAssignmentExpression); + if (this.match(',')) { + var expressions = []; + this.context.isAssignmentTarget = false; + expressions.push(expr); + while (this.lookahead.type !== 2 /* EOF */) { + if (!this.match(',')) { + break; + } + this.nextToken(); + if (this.match(')')) { + this.nextToken(); + for (var i = 0; i < expressions.length; i++) { + this.reinterpretExpressionAsPattern(expressions[i]); + } + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: expressions, + async: false + }; + } + else if (this.match('...')) { + if (!this.context.isBindingElement) { + this.throwUnexpectedToken(this.lookahead); + } + expressions.push(this.parseRestElement(params)); + this.expect(')'); + if (!this.match('=>')) { + this.expect('=>'); + } + this.context.isBindingElement = false; + for (var i = 0; i < expressions.length; i++) { + this.reinterpretExpressionAsPattern(expressions[i]); + } + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: expressions, + async: false + }; + } + else { + expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); + } + if (arrow) { + break; + } + } + if (!arrow) { + expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); + } + } + if (!arrow) { + this.expect(')'); + if (this.match('=>')) { + if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') { + arrow = true; + expr = { + type: ArrowParameterPlaceHolder, + params: [expr], + async: false + }; + } + if (!arrow) { + if (!this.context.isBindingElement) { + this.throwUnexpectedToken(this.lookahead); + } + if (expr.type === syntax_1.Syntax.SequenceExpression) { + for (var i = 0; i < expr.expressions.length; i++) { + this.reinterpretExpressionAsPattern(expr.expressions[i]); + } + } + else { + this.reinterpretExpressionAsPattern(expr); + } + var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]); + expr = { + type: ArrowParameterPlaceHolder, + params: parameters, + async: false + }; + } + } + this.context.isBindingElement = false; + } + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions + Parser.prototype.parseArguments = function () { + this.expect('('); + var args = []; + if (!this.match(')')) { + while (true) { + var expr = this.match('...') ? this.parseSpreadElement() : + this.isolateCoverGrammar(this.parseAssignmentExpression); + args.push(expr); + if (this.match(')')) { + break; + } + this.expectCommaSeparator(); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return args; + }; + Parser.prototype.isIdentifierName = function (token) { + return token.type === 3 /* Identifier */ || + token.type === 4 /* Keyword */ || + token.type === 1 /* BooleanLiteral */ || + token.type === 5 /* NullLiteral */; + }; + Parser.prototype.parseIdentifierName = function () { + var node = this.createNode(); + var token = this.nextToken(); + if (!this.isIdentifierName(token)) { + this.throwUnexpectedToken(token); + } + return this.finalize(node, new Node.Identifier(token.value)); + }; + Parser.prototype.parseNewExpression = function () { + var node = this.createNode(); + var id = this.parseIdentifierName(); + assert_1.assert(id.name === 'new', 'New expression must start with `new`'); + var expr; + if (this.match('.')) { + this.nextToken(); + if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') { + var property = this.parseIdentifierName(); + expr = new Node.MetaProperty(id, property); + } + else { + this.throwUnexpectedToken(this.lookahead); + } + } + else { + var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression); + var args = this.match('(') ? this.parseArguments() : []; + expr = new Node.NewExpression(callee, args); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + return this.finalize(node, expr); + }; + Parser.prototype.parseAsyncArgument = function () { + var arg = this.parseAssignmentExpression(); + this.context.firstCoverInitializedNameError = null; + return arg; + }; + Parser.prototype.parseAsyncArguments = function () { + this.expect('('); + var args = []; + if (!this.match(')')) { + while (true) { + var expr = this.match('...') ? this.parseSpreadElement() : + this.isolateCoverGrammar(this.parseAsyncArgument); + args.push(expr); + if (this.match(')')) { + break; + } + this.expectCommaSeparator(); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return args; + }; + Parser.prototype.parseLeftHandSideExpressionAllowCall = function () { + var startToken = this.lookahead; + var maybeAsync = this.matchContextualKeyword('async'); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + var expr; + if (this.matchKeyword('super') && this.context.inFunctionBody) { + expr = this.createNode(); + this.nextToken(); + expr = this.finalize(expr, new Node.Super()); + if (!this.match('(') && !this.match('.') && !this.match('[')) { + this.throwUnexpectedToken(this.lookahead); + } + } + else { + expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); + } + while (true) { + if (this.match('.')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('.'); + var property = this.parseIdentifierName(); + expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property)); + } + else if (this.match('(')) { + var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber); + this.context.isBindingElement = false; + this.context.isAssignmentTarget = false; + var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments(); + expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args)); + if (asyncArrow && this.match('=>')) { + for (var i = 0; i < args.length; ++i) { + this.reinterpretExpressionAsPattern(args[i]); + } + expr = { + type: ArrowParameterPlaceHolder, + params: args, + async: true + }; + } + } + else if (this.match('[')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('['); + var property = this.isolateCoverGrammar(this.parseExpression); + this.expect(']'); + expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property)); + } + else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { + var quasi = this.parseTemplateLiteral(); + expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi)); + } + else { + break; + } + } + this.context.allowIn = previousAllowIn; + return expr; + }; + Parser.prototype.parseSuper = function () { + var node = this.createNode(); + this.expectKeyword('super'); + if (!this.match('[') && !this.match('.')) { + this.throwUnexpectedToken(this.lookahead); + } + return this.finalize(node, new Node.Super()); + }; + Parser.prototype.parseLeftHandSideExpression = function () { + assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.'); + var node = this.startNode(this.lookahead); + var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() : + this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); + while (true) { + if (this.match('[')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('['); + var property = this.isolateCoverGrammar(this.parseExpression); + this.expect(']'); + expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property)); + } + else if (this.match('.')) { + this.context.isBindingElement = false; + this.context.isAssignmentTarget = true; + this.expect('.'); + var property = this.parseIdentifierName(); + expr = this.finalize(node, new Node.StaticMemberExpression(expr, property)); + } + else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { + var quasi = this.parseTemplateLiteral(); + expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi)); + } + else { + break; + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-update-expressions + Parser.prototype.parseUpdateExpression = function () { + var expr; + var startToken = this.lookahead; + if (this.match('++') || this.match('--')) { + var node = this.startNode(startToken); + var token = this.nextToken(); + expr = this.inheritCoverGrammar(this.parseUnaryExpression); + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { + this.tolerateError(messages_1.Messages.StrictLHSPrefix); + } + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + var prefix = true; + expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix)); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else { + expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall); + if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) { + if (this.match('++') || this.match('--')) { + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { + this.tolerateError(messages_1.Messages.StrictLHSPostfix); + } + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var operator = this.nextToken().value; + var prefix = false; + expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix)); + } + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-unary-operators + Parser.prototype.parseAwaitExpression = function () { + var node = this.createNode(); + this.nextToken(); + var argument = this.parseUnaryExpression(); + return this.finalize(node, new Node.AwaitExpression(argument)); + }; + Parser.prototype.parseUnaryExpression = function () { + var expr; + if (this.match('+') || this.match('-') || this.match('~') || this.match('!') || + this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) { + var node = this.startNode(this.lookahead); + var token = this.nextToken(); + expr = this.inheritCoverGrammar(this.parseUnaryExpression); + expr = this.finalize(node, new Node.UnaryExpression(token.value, expr)); + if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) { + this.tolerateError(messages_1.Messages.StrictDelete); + } + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else if (this.context.await && this.matchContextualKeyword('await')) { + expr = this.parseAwaitExpression(); + } + else { + expr = this.parseUpdateExpression(); + } + return expr; + }; + Parser.prototype.parseExponentiationExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseUnaryExpression); + if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) { + this.nextToken(); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var left = expr; + var right = this.isolateCoverGrammar(this.parseExponentiationExpression); + expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right)); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-exp-operator + // https://tc39.github.io/ecma262/#sec-multiplicative-operators + // https://tc39.github.io/ecma262/#sec-additive-operators + // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators + // https://tc39.github.io/ecma262/#sec-relational-operators + // https://tc39.github.io/ecma262/#sec-equality-operators + // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators + // https://tc39.github.io/ecma262/#sec-binary-logical-operators + Parser.prototype.binaryPrecedence = function (token) { + var op = token.value; + var precedence; + if (token.type === 7 /* Punctuator */) { + precedence = this.operatorPrecedence[op] || 0; + } + else if (token.type === 4 /* Keyword */) { + precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0; + } + else { + precedence = 0; + } + return precedence; + }; + Parser.prototype.parseBinaryExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseExponentiationExpression); + var token = this.lookahead; + var prec = this.binaryPrecedence(token); + if (prec > 0) { + this.nextToken(); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var markers = [startToken, this.lookahead]; + var left = expr; + var right = this.isolateCoverGrammar(this.parseExponentiationExpression); + var stack = [left, token.value, right]; + var precedences = [prec]; + while (true) { + prec = this.binaryPrecedence(this.lookahead); + if (prec <= 0) { + break; + } + // Reduce: make a binary expression from the three topmost entries. + while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) { + right = stack.pop(); + var operator = stack.pop(); + precedences.pop(); + left = stack.pop(); + markers.pop(); + var node = this.startNode(markers[markers.length - 1]); + stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right))); + } + // Shift. + stack.push(this.nextToken().value); + precedences.push(prec); + markers.push(this.lookahead); + stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression)); + } + // Final reduce to clean-up the stack. + var i = stack.length - 1; + expr = stack[i]; + var lastMarker = markers.pop(); + while (i > 1) { + var marker = markers.pop(); + var lastLineStart = lastMarker && lastMarker.lineStart; + var node = this.startNode(marker, lastLineStart); + var operator = stack[i - 1]; + expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr)); + i -= 2; + lastMarker = marker; + } + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-conditional-operator + Parser.prototype.parseConditionalExpression = function () { + var startToken = this.lookahead; + var expr = this.inheritCoverGrammar(this.parseBinaryExpression); + if (this.match('?')) { + this.nextToken(); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.context.allowIn = previousAllowIn; + this.expect(':'); + var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression); + expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate)); + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-assignment-operators + Parser.prototype.checkPatternParam = function (options, param) { + switch (param.type) { + case syntax_1.Syntax.Identifier: + this.validateParam(options, param, param.name); + break; + case syntax_1.Syntax.RestElement: + this.checkPatternParam(options, param.argument); + break; + case syntax_1.Syntax.AssignmentPattern: + this.checkPatternParam(options, param.left); + break; + case syntax_1.Syntax.ArrayPattern: + for (var i = 0; i < param.elements.length; i++) { + if (param.elements[i] !== null) { + this.checkPatternParam(options, param.elements[i]); + } + } + break; + case syntax_1.Syntax.ObjectPattern: + for (var i = 0; i < param.properties.length; i++) { + this.checkPatternParam(options, param.properties[i].value); + } + break; + default: + break; + } + options.simple = options.simple && (param instanceof Node.Identifier); + }; + Parser.prototype.reinterpretAsCoverFormalsList = function (expr) { + var params = [expr]; + var options; + var asyncArrow = false; + switch (expr.type) { + case syntax_1.Syntax.Identifier: + break; + case ArrowParameterPlaceHolder: + params = expr.params; + asyncArrow = expr.async; + break; + default: + return null; + } + options = { + simple: true, + paramSet: {} }; - - if (mapping.source != null) { - newMapping.source = mapping.source; - if (sourceRoot != null) { - newMapping.source = util.relative(sourceRoot, newMapping.source); - } - - newMapping.original = { - line: mapping.originalLine, - column: mapping.originalColumn - }; - - if (mapping.name != null) { - newMapping.name = mapping.name; - } + for (var i = 0; i < params.length; ++i) { + var param = params[i]; + if (param.type === syntax_1.Syntax.AssignmentPattern) { + if (param.right.type === syntax_1.Syntax.YieldExpression) { + if (param.right.argument) { + this.throwUnexpectedToken(this.lookahead); + } + param.right.type = syntax_1.Syntax.Identifier; + param.right.name = 'yield'; + delete param.right.argument; + delete param.right.delegate; + } + } + else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') { + this.throwUnexpectedToken(this.lookahead); + } + this.checkPatternParam(options, param); + params[i] = param; } - - generator.addMapping(newMapping); - }); - aSourceMapConsumer.sources.forEach(function (sourceFile) { - var content = aSourceMapConsumer.sourceContentFor(sourceFile); - if (content != null) { - generator.setSourceContent(sourceFile, content); + if (this.context.strict || !this.context.allowYield) { + for (var i = 0; i < params.length; ++i) { + var param = params[i]; + if (param.type === syntax_1.Syntax.YieldExpression) { + this.throwUnexpectedToken(this.lookahead); + } + } } - }); - return generator; + if (options.message === messages_1.Messages.StrictParamDupe) { + var token = this.context.strict ? options.stricted : options.firstRestricted; + this.throwUnexpectedToken(token, options.message); + } + return { + simple: options.simple, + params: params, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; }; - - /** - * Add a single mapping from original source line and column to the generated - * source's line and column for this source map being created. The mapping - * object should have the following properties: - * - * - generated: An object with the generated line and column positions. - * - original: An object with the original line and column positions. - * - source: The original source file (relative to the sourceRoot). - * - name: An optional original token name for this mapping. - */ - SourceMapGenerator.prototype.addMapping = - function SourceMapGenerator_addMapping(aArgs) { - var generated = util.getArg(aArgs, 'generated'); - var original = util.getArg(aArgs, 'original', null); - var source = util.getArg(aArgs, 'source', null); - var name = util.getArg(aArgs, 'name', null); - - if (!this._skipValidation) { - this._validateMapping(generated, original, source, name); - } - - if (source != null && !this._sources.has(source)) { - this._sources.add(source); - } - - if (name != null && !this._names.has(name)) { - this._names.add(name); - } - - this._mappings.add({ - generatedLine: generated.line, - generatedColumn: generated.column, - originalLine: original != null && original.line, - originalColumn: original != null && original.column, - source: source, - name: name - }); + Parser.prototype.parseAssignmentExpression = function () { + var expr; + if (!this.context.allowYield && this.matchKeyword('yield')) { + expr = this.parseYieldExpression(); + } + else { + var startToken = this.lookahead; + var token = startToken; + expr = this.parseConditionalExpression(); + if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') { + if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) { + var arg = this.parsePrimaryExpression(); + this.reinterpretExpressionAsPattern(arg); + expr = { + type: ArrowParameterPlaceHolder, + params: [arg], + async: true + }; + } + } + if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) { + // https://tc39.github.io/ecma262/#sec-arrow-function-definitions + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + var isAsync = expr.async; + var list = this.reinterpretAsCoverFormalsList(expr); + if (list) { + if (this.hasLineTerminator) { + this.tolerateUnexpectedToken(this.lookahead); + } + this.context.firstCoverInitializedNameError = null; + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = list.simple; + var previousAllowYield = this.context.allowYield; + var previousAwait = this.context.await; + this.context.allowYield = true; + this.context.await = isAsync; + var node = this.startNode(startToken); + this.expect('=>'); + var body = void 0; + if (this.match('{')) { + var previousAllowIn = this.context.allowIn; + this.context.allowIn = true; + body = this.parseFunctionSourceElements(); + this.context.allowIn = previousAllowIn; + } + else { + body = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + var expression = body.type !== syntax_1.Syntax.BlockStatement; + if (this.context.strict && list.firstRestricted) { + this.throwUnexpectedToken(list.firstRestricted, list.message); + } + if (this.context.strict && list.stricted) { + this.tolerateUnexpectedToken(list.stricted, list.message); + } + expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) : + this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression)); + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.allowYield = previousAllowYield; + this.context.await = previousAwait; + } + } + else { + if (this.matchAssign()) { + if (!this.context.isAssignmentTarget) { + this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); + } + if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) { + var id = expr; + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment); + } + if (this.scanner.isStrictModeReservedWord(id.name)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + } + if (!this.match('=')) { + this.context.isAssignmentTarget = false; + this.context.isBindingElement = false; + } + else { + this.reinterpretExpressionAsPattern(expr); + } + token = this.nextToken(); + var operator = token.value; + var right = this.isolateCoverGrammar(this.parseAssignmentExpression); + expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right)); + this.context.firstCoverInitializedNameError = null; + } + } + } + return expr; }; - - /** - * Set the source content for a source file. - */ - SourceMapGenerator.prototype.setSourceContent = - function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) { - var source = aSourceFile; - if (this._sourceRoot != null) { - source = util.relative(this._sourceRoot, source); - } - - if (aSourceContent != null) { - // Add the source content to the _sourcesContents map. - // Create a new _sourcesContents map if the property is null. - if (!this._sourcesContents) { - this._sourcesContents = {}; + // https://tc39.github.io/ecma262/#sec-comma-operator + Parser.prototype.parseExpression = function () { + var startToken = this.lookahead; + var expr = this.isolateCoverGrammar(this.parseAssignmentExpression); + if (this.match(',')) { + var expressions = []; + expressions.push(expr); + while (this.lookahead.type !== 2 /* EOF */) { + if (!this.match(',')) { + break; + } + this.nextToken(); + expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); + } + expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); + } + return expr; + }; + // https://tc39.github.io/ecma262/#sec-block + Parser.prototype.parseStatementListItem = function () { + var statement; + this.context.isAssignmentTarget = true; + this.context.isBindingElement = true; + if (this.lookahead.type === 4 /* Keyword */) { + switch (this.lookahead.value) { + case 'export': + if (!this.context.isModule) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration); + } + statement = this.parseExportDeclaration(); + break; + case 'import': + if (!this.context.isModule) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration); + } + statement = this.parseImportDeclaration(); + break; + case 'const': + statement = this.parseLexicalDeclaration({ inFor: false }); + break; + case 'function': + statement = this.parseFunctionDeclaration(); + break; + case 'class': + statement = this.parseClassDeclaration(); + break; + case 'let': + statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement(); + break; + default: + statement = this.parseStatement(); + break; + } } - this._sourcesContents[util.toSetString(source)] = aSourceContent; - } else if (this._sourcesContents) { - // Remove the source file from the _sourcesContents map. - // If the _sourcesContents map is empty, set the property to null. - delete this._sourcesContents[util.toSetString(source)]; - if (Object.keys(this._sourcesContents).length === 0) { - this._sourcesContents = null; + else { + statement = this.parseStatement(); } - } + return statement; }; - - /** - * Applies the mappings of a sub-source-map for a specific source file to the - * source map being generated. Each mapping to the supplied source file is - * rewritten using the supplied source map. Note: The resolution for the - * resulting mappings is the minimium of this map and the supplied map. - * - * @param aSourceMapConsumer The source map to be applied. - * @param aSourceFile Optional. The filename of the source file. - * If omitted, SourceMapConsumer's file property will be used. - * @param aSourceMapPath Optional. The dirname of the path to the source map - * to be applied. If relative, it is relative to the SourceMapConsumer. - * This parameter is needed when the two source maps aren't in the same - * directory, and the source map to be applied contains relative source - * paths. If so, those relative source paths need to be rewritten - * relative to the SourceMapGenerator. - */ - SourceMapGenerator.prototype.applySourceMap = - function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) { - var sourceFile = aSourceFile; - // If aSourceFile is omitted, we will use the file property of the SourceMap - if (aSourceFile == null) { - if (aSourceMapConsumer.file == null) { - throw new Error( - 'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' + - 'or the source map\'s "file" property. Both were omitted.' - ); - } - sourceFile = aSourceMapConsumer.file; - } - var sourceRoot = this._sourceRoot; - // Make "sourceFile" relative if an absolute Url is passed. - if (sourceRoot != null) { - sourceFile = util.relative(sourceRoot, sourceFile); - } - // Applying the SourceMap can add and remove items from the sources and - // the names array. - var newSources = new ArraySet(); - var newNames = new ArraySet(); - - // Find mappings for the "sourceFile" - this._mappings.unsortedForEach(function (mapping) { - if (mapping.source === sourceFile && mapping.originalLine != null) { - // Check if it can be mapped by the source map, then update the mapping. - var original = aSourceMapConsumer.originalPositionFor({ - line: mapping.originalLine, - column: mapping.originalColumn - }); - if (original.source != null) { - // Copy mapping - mapping.source = original.source; - if (aSourceMapPath != null) { - mapping.source = util.join(aSourceMapPath, mapping.source) + Parser.prototype.parseBlock = function () { + var node = this.createNode(); + this.expect('{'); + var block = []; + while (true) { + if (this.match('}')) { + break; } - if (sourceRoot != null) { - mapping.source = util.relative(sourceRoot, mapping.source); + block.push(this.parseStatementListItem()); + } + this.expect('}'); + return this.finalize(node, new Node.BlockStatement(block)); + }; + // https://tc39.github.io/ecma262/#sec-let-and-const-declarations + Parser.prototype.parseLexicalBinding = function (kind, options) { + var node = this.createNode(); + var params = []; + var id = this.parsePattern(params, kind); + if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateError(messages_1.Messages.StrictVarName); } - mapping.originalLine = original.line; - mapping.originalColumn = original.column; - if (original.name != null) { - mapping.name = original.name; + } + var init = null; + if (kind === 'const') { + if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) { + if (this.match('=')) { + this.nextToken(); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + else { + this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const'); + } } - } } - - var source = mapping.source; - if (source != null && !newSources.has(source)) { - newSources.add(source); + else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) { + this.expect('='); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); } - - var name = mapping.name; - if (name != null && !newNames.has(name)) { - newNames.add(name); + return this.finalize(node, new Node.VariableDeclarator(id, init)); + }; + Parser.prototype.parseBindingList = function (kind, options) { + var list = [this.parseLexicalBinding(kind, options)]; + while (this.match(',')) { + this.nextToken(); + list.push(this.parseLexicalBinding(kind, options)); + } + return list; + }; + Parser.prototype.isLexicalDeclaration = function () { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.scanner.lex(); + this.scanner.restoreState(state); + return (next.type === 3 /* Identifier */) || + (next.type === 7 /* Punctuator */ && next.value === '[') || + (next.type === 7 /* Punctuator */ && next.value === '{') || + (next.type === 4 /* Keyword */ && next.value === 'let') || + (next.type === 4 /* Keyword */ && next.value === 'yield'); + }; + Parser.prototype.parseLexicalDeclaration = function (options) { + var node = this.createNode(); + var kind = this.nextToken().value; + assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const'); + var declarations = this.parseBindingList(kind, options); + this.consumeSemicolon(); + return this.finalize(node, new Node.VariableDeclaration(declarations, kind)); + }; + // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns + Parser.prototype.parseBindingRestElement = function (params, kind) { + var node = this.createNode(); + this.expect('...'); + var arg = this.parsePattern(params, kind); + return this.finalize(node, new Node.RestElement(arg)); + }; + Parser.prototype.parseArrayPattern = function (params, kind) { + var node = this.createNode(); + this.expect('['); + var elements = []; + while (!this.match(']')) { + if (this.match(',')) { + this.nextToken(); + elements.push(null); + } + else { + if (this.match('...')) { + elements.push(this.parseBindingRestElement(params, kind)); + break; + } + else { + elements.push(this.parsePatternWithDefault(params, kind)); + } + if (!this.match(']')) { + this.expect(','); + } + } + } + this.expect(']'); + return this.finalize(node, new Node.ArrayPattern(elements)); + }; + Parser.prototype.parsePropertyPattern = function (params, kind) { + var node = this.createNode(); + var computed = false; + var shorthand = false; + var method = false; + var key; + var value; + if (this.lookahead.type === 3 /* Identifier */) { + var keyToken = this.lookahead; + key = this.parseVariableIdentifier(); + var init = this.finalize(node, new Node.Identifier(keyToken.value)); + if (this.match('=')) { + params.push(keyToken); + shorthand = true; + this.nextToken(); + var expr = this.parseAssignmentExpression(); + value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr)); + } + else if (!this.match(':')) { + params.push(keyToken); + shorthand = true; + value = init; + } + else { + this.expect(':'); + value = this.parsePatternWithDefault(params, kind); + } + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.expect(':'); + value = this.parsePatternWithDefault(params, kind); + } + return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand)); + }; + Parser.prototype.parseObjectPattern = function (params, kind) { + var node = this.createNode(); + var properties = []; + this.expect('{'); + while (!this.match('}')) { + properties.push(this.parsePropertyPattern(params, kind)); + if (!this.match('}')) { + this.expect(','); + } + } + this.expect('}'); + return this.finalize(node, new Node.ObjectPattern(properties)); + }; + Parser.prototype.parsePattern = function (params, kind) { + var pattern; + if (this.match('[')) { + pattern = this.parseArrayPattern(params, kind); + } + else if (this.match('{')) { + pattern = this.parseObjectPattern(params, kind); + } + else { + if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) { + this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding); + } + params.push(this.lookahead); + pattern = this.parseVariableIdentifier(kind); + } + return pattern; + }; + Parser.prototype.parsePatternWithDefault = function (params, kind) { + var startToken = this.lookahead; + var pattern = this.parsePattern(params, kind); + if (this.match('=')) { + this.nextToken(); + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var right = this.isolateCoverGrammar(this.parseAssignmentExpression); + this.context.allowYield = previousAllowYield; + pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right)); + } + return pattern; + }; + // https://tc39.github.io/ecma262/#sec-variable-statement + Parser.prototype.parseVariableIdentifier = function (kind) { + var node = this.createNode(); + var token = this.nextToken(); + if (token.type === 4 /* Keyword */ && token.value === 'yield') { + if (this.context.strict) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + else if (!this.context.allowYield) { + this.throwUnexpectedToken(token); + } + } + else if (token.type !== 3 /* Identifier */) { + if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); + } + else { + if (this.context.strict || token.value !== 'let' || kind !== 'var') { + this.throwUnexpectedToken(token); + } + } + } + else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') { + this.tolerateUnexpectedToken(token); + } + return this.finalize(node, new Node.Identifier(token.value)); + }; + Parser.prototype.parseVariableDeclaration = function (options) { + var node = this.createNode(); + var params = []; + var id = this.parsePattern(params, 'var'); + if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(id.name)) { + this.tolerateError(messages_1.Messages.StrictVarName); + } + } + var init = null; + if (this.match('=')) { + this.nextToken(); + init = this.isolateCoverGrammar(this.parseAssignmentExpression); + } + else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) { + this.expect('='); + } + return this.finalize(node, new Node.VariableDeclarator(id, init)); + }; + Parser.prototype.parseVariableDeclarationList = function (options) { + var opt = { inFor: options.inFor }; + var list = []; + list.push(this.parseVariableDeclaration(opt)); + while (this.match(',')) { + this.nextToken(); + list.push(this.parseVariableDeclaration(opt)); + } + return list; + }; + Parser.prototype.parseVariableStatement = function () { + var node = this.createNode(); + this.expectKeyword('var'); + var declarations = this.parseVariableDeclarationList({ inFor: false }); + this.consumeSemicolon(); + return this.finalize(node, new Node.VariableDeclaration(declarations, 'var')); + }; + // https://tc39.github.io/ecma262/#sec-empty-statement + Parser.prototype.parseEmptyStatement = function () { + var node = this.createNode(); + this.expect(';'); + return this.finalize(node, new Node.EmptyStatement()); + }; + // https://tc39.github.io/ecma262/#sec-expression-statement + Parser.prototype.parseExpressionStatement = function () { + var node = this.createNode(); + var expr = this.parseExpression(); + this.consumeSemicolon(); + return this.finalize(node, new Node.ExpressionStatement(expr)); + }; + // https://tc39.github.io/ecma262/#sec-if-statement + Parser.prototype.parseIfClause = function () { + if (this.context.strict && this.matchKeyword('function')) { + this.tolerateError(messages_1.Messages.StrictFunction); + } + return this.parseStatement(); + }; + Parser.prototype.parseIfStatement = function () { + var node = this.createNode(); + var consequent; + var alternate = null; + this.expectKeyword('if'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + consequent = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + consequent = this.parseIfClause(); + if (this.matchKeyword('else')) { + this.nextToken(); + alternate = this.parseIfClause(); + } + } + return this.finalize(node, new Node.IfStatement(test, consequent, alternate)); + }; + // https://tc39.github.io/ecma262/#sec-do-while-statement + Parser.prototype.parseDoWhileStatement = function () { + var node = this.createNode(); + this.expectKeyword('do'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + var body = this.parseStatement(); + this.context.inIteration = previousInIteration; + this.expectKeyword('while'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + } + else { + this.expect(')'); + if (this.match(';')) { + this.nextToken(); + } + } + return this.finalize(node, new Node.DoWhileStatement(body, test)); + }; + // https://tc39.github.io/ecma262/#sec-while-statement + Parser.prototype.parseWhileStatement = function () { + var node = this.createNode(); + var body; + this.expectKeyword('while'); + this.expect('('); + var test = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + body = this.parseStatement(); + this.context.inIteration = previousInIteration; + } + return this.finalize(node, new Node.WhileStatement(test, body)); + }; + // https://tc39.github.io/ecma262/#sec-for-statement + // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements + Parser.prototype.parseForStatement = function () { + var init = null; + var test = null; + var update = null; + var forIn = true; + var left, right; + var node = this.createNode(); + this.expectKeyword('for'); + this.expect('('); + if (this.match(';')) { + this.nextToken(); + } + else { + if (this.matchKeyword('var')) { + init = this.createNode(); + this.nextToken(); + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + var declarations = this.parseVariableDeclarationList({ inFor: true }); + this.context.allowIn = previousAllowIn; + if (declarations.length === 1 && this.matchKeyword('in')) { + var decl = declarations[0]; + if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) { + this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in'); + } + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.nextToken(); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); + this.expect(';'); + } + } + else if (this.matchKeyword('const') || this.matchKeyword('let')) { + init = this.createNode(); + var kind = this.nextToken().value; + if (!this.context.strict && this.lookahead.value === 'in') { + init = this.finalize(init, new Node.Identifier(kind)); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else { + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + var declarations = this.parseBindingList(kind, { inFor: true }); + this.context.allowIn = previousAllowIn; + if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + this.nextToken(); + left = init; + right = this.parseExpression(); + init = null; + } + else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + this.nextToken(); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + this.consumeSemicolon(); + init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); + } + } + } + else { + var initStartToken = this.lookahead; + var previousAllowIn = this.context.allowIn; + this.context.allowIn = false; + init = this.inheritCoverGrammar(this.parseAssignmentExpression); + this.context.allowIn = previousAllowIn; + if (this.matchKeyword('in')) { + if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { + this.tolerateError(messages_1.Messages.InvalidLHSInForIn); + } + this.nextToken(); + this.reinterpretExpressionAsPattern(init); + left = init; + right = this.parseExpression(); + init = null; + } + else if (this.matchContextualKeyword('of')) { + if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { + this.tolerateError(messages_1.Messages.InvalidLHSInForLoop); + } + this.nextToken(); + this.reinterpretExpressionAsPattern(init); + left = init; + right = this.parseAssignmentExpression(); + init = null; + forIn = false; + } + else { + if (this.match(',')) { + var initSeq = [init]; + while (this.match(',')) { + this.nextToken(); + initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); + } + init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq)); + } + this.expect(';'); + } + } + } + if (typeof left === 'undefined') { + if (!this.match(';')) { + test = this.parseExpression(); + } + this.expect(';'); + if (!this.match(')')) { + update = this.parseExpression(); + } + } + var body; + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + var previousInIteration = this.context.inIteration; + this.context.inIteration = true; + body = this.isolateCoverGrammar(this.parseStatement); + this.context.inIteration = previousInIteration; + } + return (typeof left === 'undefined') ? + this.finalize(node, new Node.ForStatement(init, test, update, body)) : + forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) : + this.finalize(node, new Node.ForOfStatement(left, right, body)); + }; + // https://tc39.github.io/ecma262/#sec-continue-statement + Parser.prototype.parseContinueStatement = function () { + var node = this.createNode(); + this.expectKeyword('continue'); + var label = null; + if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { + var id = this.parseVariableIdentifier(); + label = id; + var key = '$' + id.name; + if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.UnknownLabel, id.name); + } + } + this.consumeSemicolon(); + if (label === null && !this.context.inIteration) { + this.throwError(messages_1.Messages.IllegalContinue); + } + return this.finalize(node, new Node.ContinueStatement(label)); + }; + // https://tc39.github.io/ecma262/#sec-break-statement + Parser.prototype.parseBreakStatement = function () { + var node = this.createNode(); + this.expectKeyword('break'); + var label = null; + if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { + var id = this.parseVariableIdentifier(); + var key = '$' + id.name; + if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.UnknownLabel, id.name); + } + label = id; + } + this.consumeSemicolon(); + if (label === null && !this.context.inIteration && !this.context.inSwitch) { + this.throwError(messages_1.Messages.IllegalBreak); + } + return this.finalize(node, new Node.BreakStatement(label)); + }; + // https://tc39.github.io/ecma262/#sec-return-statement + Parser.prototype.parseReturnStatement = function () { + if (!this.context.inFunctionBody) { + this.tolerateError(messages_1.Messages.IllegalReturn); + } + var node = this.createNode(); + this.expectKeyword('return'); + var hasArgument = (!this.match(';') && !this.match('}') && + !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) || + this.lookahead.type === 8 /* StringLiteral */ || + this.lookahead.type === 10 /* Template */; + var argument = hasArgument ? this.parseExpression() : null; + this.consumeSemicolon(); + return this.finalize(node, new Node.ReturnStatement(argument)); + }; + // https://tc39.github.io/ecma262/#sec-with-statement + Parser.prototype.parseWithStatement = function () { + if (this.context.strict) { + this.tolerateError(messages_1.Messages.StrictModeWith); + } + var node = this.createNode(); + var body; + this.expectKeyword('with'); + this.expect('('); + var object = this.parseExpression(); + if (!this.match(')') && this.config.tolerant) { + this.tolerateUnexpectedToken(this.nextToken()); + body = this.finalize(this.createNode(), new Node.EmptyStatement()); + } + else { + this.expect(')'); + body = this.parseStatement(); + } + return this.finalize(node, new Node.WithStatement(object, body)); + }; + // https://tc39.github.io/ecma262/#sec-switch-statement + Parser.prototype.parseSwitchCase = function () { + var node = this.createNode(); + var test; + if (this.matchKeyword('default')) { + this.nextToken(); + test = null; + } + else { + this.expectKeyword('case'); + test = this.parseExpression(); + } + this.expect(':'); + var consequent = []; + while (true) { + if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) { + break; + } + consequent.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.SwitchCase(test, consequent)); + }; + Parser.prototype.parseSwitchStatement = function () { + var node = this.createNode(); + this.expectKeyword('switch'); + this.expect('('); + var discriminant = this.parseExpression(); + this.expect(')'); + var previousInSwitch = this.context.inSwitch; + this.context.inSwitch = true; + var cases = []; + var defaultFound = false; + this.expect('{'); + while (true) { + if (this.match('}')) { + break; + } + var clause = this.parseSwitchCase(); + if (clause.test === null) { + if (defaultFound) { + this.throwError(messages_1.Messages.MultipleDefaultsInSwitch); + } + defaultFound = true; + } + cases.push(clause); + } + this.expect('}'); + this.context.inSwitch = previousInSwitch; + return this.finalize(node, new Node.SwitchStatement(discriminant, cases)); + }; + // https://tc39.github.io/ecma262/#sec-labelled-statements + Parser.prototype.parseLabelledStatement = function () { + var node = this.createNode(); + var expr = this.parseExpression(); + var statement; + if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) { + this.nextToken(); + var id = expr; + var key = '$' + id.name; + if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { + this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name); + } + this.context.labelSet[key] = true; + var body = void 0; + if (this.matchKeyword('class')) { + this.tolerateUnexpectedToken(this.lookahead); + body = this.parseClassDeclaration(); + } + else if (this.matchKeyword('function')) { + var token = this.lookahead; + var declaration = this.parseFunctionDeclaration(); + if (this.context.strict) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction); + } + else if (declaration.generator) { + this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext); + } + body = declaration; + } + else { + body = this.parseStatement(); + } + delete this.context.labelSet[key]; + statement = new Node.LabeledStatement(id, body); + } + else { + this.consumeSemicolon(); + statement = new Node.ExpressionStatement(expr); + } + return this.finalize(node, statement); + }; + // https://tc39.github.io/ecma262/#sec-throw-statement + Parser.prototype.parseThrowStatement = function () { + var node = this.createNode(); + this.expectKeyword('throw'); + if (this.hasLineTerminator) { + this.throwError(messages_1.Messages.NewlineAfterThrow); + } + var argument = this.parseExpression(); + this.consumeSemicolon(); + return this.finalize(node, new Node.ThrowStatement(argument)); + }; + // https://tc39.github.io/ecma262/#sec-try-statement + Parser.prototype.parseCatchClause = function () { + var node = this.createNode(); + this.expectKeyword('catch'); + this.expect('('); + if (this.match(')')) { + this.throwUnexpectedToken(this.lookahead); + } + var params = []; + var param = this.parsePattern(params); + var paramMap = {}; + for (var i = 0; i < params.length; i++) { + var key = '$' + params[i].value; + if (Object.prototype.hasOwnProperty.call(paramMap, key)) { + this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value); + } + paramMap[key] = true; + } + if (this.context.strict && param.type === syntax_1.Syntax.Identifier) { + if (this.scanner.isRestrictedWord(param.name)) { + this.tolerateError(messages_1.Messages.StrictCatchVariable); + } + } + this.expect(')'); + var body = this.parseBlock(); + return this.finalize(node, new Node.CatchClause(param, body)); + }; + Parser.prototype.parseFinallyClause = function () { + this.expectKeyword('finally'); + return this.parseBlock(); + }; + Parser.prototype.parseTryStatement = function () { + var node = this.createNode(); + this.expectKeyword('try'); + var block = this.parseBlock(); + var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null; + var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null; + if (!handler && !finalizer) { + this.throwError(messages_1.Messages.NoCatchOrFinally); + } + return this.finalize(node, new Node.TryStatement(block, handler, finalizer)); + }; + // https://tc39.github.io/ecma262/#sec-debugger-statement + Parser.prototype.parseDebuggerStatement = function () { + var node = this.createNode(); + this.expectKeyword('debugger'); + this.consumeSemicolon(); + return this.finalize(node, new Node.DebuggerStatement()); + }; + // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations + Parser.prototype.parseStatement = function () { + var statement; + switch (this.lookahead.type) { + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 6 /* NumericLiteral */: + case 8 /* StringLiteral */: + case 10 /* Template */: + case 9 /* RegularExpression */: + statement = this.parseExpressionStatement(); + break; + case 7 /* Punctuator */: + var value = this.lookahead.value; + if (value === '{') { + statement = this.parseBlock(); + } + else if (value === '(') { + statement = this.parseExpressionStatement(); + } + else if (value === ';') { + statement = this.parseEmptyStatement(); + } + else { + statement = this.parseExpressionStatement(); + } + break; + case 3 /* Identifier */: + statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement(); + break; + case 4 /* Keyword */: + switch (this.lookahead.value) { + case 'break': + statement = this.parseBreakStatement(); + break; + case 'continue': + statement = this.parseContinueStatement(); + break; + case 'debugger': + statement = this.parseDebuggerStatement(); + break; + case 'do': + statement = this.parseDoWhileStatement(); + break; + case 'for': + statement = this.parseForStatement(); + break; + case 'function': + statement = this.parseFunctionDeclaration(); + break; + case 'if': + statement = this.parseIfStatement(); + break; + case 'return': + statement = this.parseReturnStatement(); + break; + case 'switch': + statement = this.parseSwitchStatement(); + break; + case 'throw': + statement = this.parseThrowStatement(); + break; + case 'try': + statement = this.parseTryStatement(); + break; + case 'var': + statement = this.parseVariableStatement(); + break; + case 'while': + statement = this.parseWhileStatement(); + break; + case 'with': + statement = this.parseWithStatement(); + break; + default: + statement = this.parseExpressionStatement(); + break; + } + break; + default: + statement = this.throwUnexpectedToken(this.lookahead); + } + return statement; + }; + // https://tc39.github.io/ecma262/#sec-function-definitions + Parser.prototype.parseFunctionSourceElements = function () { + var node = this.createNode(); + this.expect('{'); + var body = this.parseDirectivePrologues(); + var previousLabelSet = this.context.labelSet; + var previousInIteration = this.context.inIteration; + var previousInSwitch = this.context.inSwitch; + var previousInFunctionBody = this.context.inFunctionBody; + this.context.labelSet = {}; + this.context.inIteration = false; + this.context.inSwitch = false; + this.context.inFunctionBody = true; + while (this.lookahead.type !== 2 /* EOF */) { + if (this.match('}')) { + break; + } + body.push(this.parseStatementListItem()); + } + this.expect('}'); + this.context.labelSet = previousLabelSet; + this.context.inIteration = previousInIteration; + this.context.inSwitch = previousInSwitch; + this.context.inFunctionBody = previousInFunctionBody; + return this.finalize(node, new Node.BlockStatement(body)); + }; + Parser.prototype.validateParam = function (options, param, name) { + var key = '$' + name; + if (this.context.strict) { + if (this.scanner.isRestrictedWord(name)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamName; + } + if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamDupe; + } + } + else if (!options.firstRestricted) { + if (this.scanner.isRestrictedWord(name)) { + options.firstRestricted = param; + options.message = messages_1.Messages.StrictParamName; + } + else if (this.scanner.isStrictModeReservedWord(name)) { + options.firstRestricted = param; + options.message = messages_1.Messages.StrictReservedWord; + } + else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { + options.stricted = param; + options.message = messages_1.Messages.StrictParamDupe; + } + } + /* istanbul ignore next */ + if (typeof Object.defineProperty === 'function') { + Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true }); + } + else { + options.paramSet[key] = true; + } + }; + Parser.prototype.parseRestElement = function (params) { + var node = this.createNode(); + this.expect('...'); + var arg = this.parsePattern(params); + if (this.match('=')) { + this.throwError(messages_1.Messages.DefaultRestParameter); + } + if (!this.match(')')) { + this.throwError(messages_1.Messages.ParameterAfterRestParameter); + } + return this.finalize(node, new Node.RestElement(arg)); + }; + Parser.prototype.parseFormalParameter = function (options) { + var params = []; + var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params); + for (var i = 0; i < params.length; i++) { + this.validateParam(options, params[i], params[i].value); + } + options.simple = options.simple && (param instanceof Node.Identifier); + options.params.push(param); + }; + Parser.prototype.parseFormalParameters = function (firstRestricted) { + var options; + options = { + simple: true, + params: [], + firstRestricted: firstRestricted + }; + this.expect('('); + if (!this.match(')')) { + options.paramSet = {}; + while (this.lookahead.type !== 2 /* EOF */) { + this.parseFormalParameter(options); + if (this.match(')')) { + break; + } + this.expect(','); + if (this.match(')')) { + break; + } + } + } + this.expect(')'); + return { + simple: options.simple, + params: options.params, + stricted: options.stricted, + firstRestricted: options.firstRestricted, + message: options.message + }; + }; + Parser.prototype.matchAsyncFunction = function () { + var match = this.matchContextualKeyword('async'); + if (match) { + var state = this.scanner.saveState(); + this.scanner.scanComments(); + var next = this.scanner.lex(); + this.scanner.restoreState(state); + match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function'); + } + return match; + }; + Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) { + var node = this.createNode(); + var isAsync = this.matchContextualKeyword('async'); + if (isAsync) { + this.nextToken(); + } + this.expectKeyword('function'); + var isGenerator = isAsync ? false : this.match('*'); + if (isGenerator) { + this.nextToken(); + } + var message; + var id = null; + var firstRestricted = null; + if (!identifierIsOptional || !this.match('(')) { + var token = this.lookahead; + id = this.parseVariableIdentifier(); + if (this.context.strict) { + if (this.scanner.isRestrictedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); + } + } + else { + if (this.scanner.isRestrictedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictFunctionName; + } + else if (this.scanner.isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictReservedWord; + } + } + } + var previousAllowAwait = this.context.await; + var previousAllowYield = this.context.allowYield; + this.context.await = isAsync; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(firstRestricted); + var params = formalParameters.params; + var stricted = formalParameters.stricted; + firstRestricted = formalParameters.firstRestricted; + if (formalParameters.message) { + message = formalParameters.message; + } + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = formalParameters.simple; + var body = this.parseFunctionSourceElements(); + if (this.context.strict && firstRestricted) { + this.throwUnexpectedToken(firstRestricted, message); + } + if (this.context.strict && stricted) { + this.tolerateUnexpectedToken(stricted, message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.await = previousAllowAwait; + this.context.allowYield = previousAllowYield; + return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) : + this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator)); + }; + Parser.prototype.parseFunctionExpression = function () { + var node = this.createNode(); + var isAsync = this.matchContextualKeyword('async'); + if (isAsync) { + this.nextToken(); + } + this.expectKeyword('function'); + var isGenerator = isAsync ? false : this.match('*'); + if (isGenerator) { + this.nextToken(); + } + var message; + var id = null; + var firstRestricted; + var previousAllowAwait = this.context.await; + var previousAllowYield = this.context.allowYield; + this.context.await = isAsync; + this.context.allowYield = !isGenerator; + if (!this.match('(')) { + var token = this.lookahead; + id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier(); + if (this.context.strict) { + if (this.scanner.isRestrictedWord(token.value)) { + this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); + } + } + else { + if (this.scanner.isRestrictedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictFunctionName; + } + else if (this.scanner.isStrictModeReservedWord(token.value)) { + firstRestricted = token; + message = messages_1.Messages.StrictReservedWord; + } + } + } + var formalParameters = this.parseFormalParameters(firstRestricted); + var params = formalParameters.params; + var stricted = formalParameters.stricted; + firstRestricted = formalParameters.firstRestricted; + if (formalParameters.message) { + message = formalParameters.message; + } + var previousStrict = this.context.strict; + var previousAllowStrictDirective = this.context.allowStrictDirective; + this.context.allowStrictDirective = formalParameters.simple; + var body = this.parseFunctionSourceElements(); + if (this.context.strict && firstRestricted) { + this.throwUnexpectedToken(firstRestricted, message); + } + if (this.context.strict && stricted) { + this.tolerateUnexpectedToken(stricted, message); + } + this.context.strict = previousStrict; + this.context.allowStrictDirective = previousAllowStrictDirective; + this.context.await = previousAllowAwait; + this.context.allowYield = previousAllowYield; + return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) : + this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator)); + }; + // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive + Parser.prototype.parseDirective = function () { + var token = this.lookahead; + var node = this.createNode(); + var expr = this.parseExpression(); + var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null; + this.consumeSemicolon(); + return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr)); + }; + Parser.prototype.parseDirectivePrologues = function () { + var firstRestricted = null; + var body = []; + while (true) { + var token = this.lookahead; + if (token.type !== 8 /* StringLiteral */) { + break; + } + var statement = this.parseDirective(); + body.push(statement); + var directive = statement.directive; + if (typeof directive !== 'string') { + break; + } + if (directive === 'use strict') { + this.context.strict = true; + if (firstRestricted) { + this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral); + } + if (!this.context.allowStrictDirective) { + this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective); + } + } + else { + if (!firstRestricted && token.octal) { + firstRestricted = token; + } + } + } + return body; + }; + // https://tc39.github.io/ecma262/#sec-method-definitions + Parser.prototype.qualifiedPropertyName = function (token) { + switch (token.type) { + case 3 /* Identifier */: + case 8 /* StringLiteral */: + case 1 /* BooleanLiteral */: + case 5 /* NullLiteral */: + case 6 /* NumericLiteral */: + case 4 /* Keyword */: + return true; + case 7 /* Punctuator */: + return token.value === '['; + default: + break; + } + return false; + }; + Parser.prototype.parseGetterMethod = function () { + var node = this.createNode(); + var isGenerator = false; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(); + if (formalParameters.params.length > 0) { + this.tolerateError(messages_1.Messages.BadGetterArity); + } + var method = this.parsePropertyMethod(formalParameters); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); + }; + Parser.prototype.parseSetterMethod = function () { + var node = this.createNode(); + var isGenerator = false; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = !isGenerator; + var formalParameters = this.parseFormalParameters(); + if (formalParameters.params.length !== 1) { + this.tolerateError(messages_1.Messages.BadSetterArity); + } + else if (formalParameters.params[0] instanceof Node.RestElement) { + this.tolerateError(messages_1.Messages.BadSetterRestParameter); + } + var method = this.parsePropertyMethod(formalParameters); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); + }; + Parser.prototype.parseGeneratorMethod = function () { + var node = this.createNode(); + var isGenerator = true; + var previousAllowYield = this.context.allowYield; + this.context.allowYield = true; + var params = this.parseFormalParameters(); + this.context.allowYield = false; + var method = this.parsePropertyMethod(params); + this.context.allowYield = previousAllowYield; + return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); + }; + // https://tc39.github.io/ecma262/#sec-generator-function-definitions + Parser.prototype.isStartOfExpression = function () { + var start = true; + var value = this.lookahead.value; + switch (this.lookahead.type) { + case 7 /* Punctuator */: + start = (value === '[') || (value === '(') || (value === '{') || + (value === '+') || (value === '-') || + (value === '!') || (value === '~') || + (value === '++') || (value === '--') || + (value === '/') || (value === '/='); // regular expression literal + break; + case 4 /* Keyword */: + start = (value === 'class') || (value === 'delete') || + (value === 'function') || (value === 'let') || (value === 'new') || + (value === 'super') || (value === 'this') || (value === 'typeof') || + (value === 'void') || (value === 'yield'); + break; + default: + break; + } + return start; + }; + Parser.prototype.parseYieldExpression = function () { + var node = this.createNode(); + this.expectKeyword('yield'); + var argument = null; + var delegate = false; + if (!this.hasLineTerminator) { + var previousAllowYield = this.context.allowYield; + this.context.allowYield = false; + delegate = this.match('*'); + if (delegate) { + this.nextToken(); + argument = this.parseAssignmentExpression(); + } + else if (this.isStartOfExpression()) { + argument = this.parseAssignmentExpression(); + } + this.context.allowYield = previousAllowYield; + } + return this.finalize(node, new Node.YieldExpression(argument, delegate)); + }; + // https://tc39.github.io/ecma262/#sec-class-definitions + Parser.prototype.parseClassElement = function (hasConstructor) { + var token = this.lookahead; + var node = this.createNode(); + var kind = ''; + var key = null; + var value = null; + var computed = false; + var method = false; + var isStatic = false; + var isAsync = false; + if (this.match('*')) { + this.nextToken(); + } + else { + computed = this.match('['); + key = this.parseObjectPropertyKey(); + var id = key; + if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) { + token = this.lookahead; + isStatic = true; + computed = this.match('['); + if (this.match('*')) { + this.nextToken(); + } + else { + key = this.parseObjectPropertyKey(); + } + } + if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) { + var punctuator = this.lookahead.value; + if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') { + isAsync = true; + token = this.lookahead; + key = this.parseObjectPropertyKey(); + if (token.type === 3 /* Identifier */ && token.value === 'constructor') { + this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync); + } + } + } + } + var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); + if (token.type === 3 /* Identifier */) { + if (token.value === 'get' && lookaheadPropertyKey) { + kind = 'get'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + this.context.allowYield = false; + value = this.parseGetterMethod(); + } + else if (token.value === 'set' && lookaheadPropertyKey) { + kind = 'set'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseSetterMethod(); + } + } + else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { + kind = 'init'; + computed = this.match('['); + key = this.parseObjectPropertyKey(); + value = this.parseGeneratorMethod(); + method = true; + } + if (!kind && key && this.match('(')) { + kind = 'init'; + value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); + method = true; + } + if (!kind) { + this.throwUnexpectedToken(this.lookahead); + } + if (kind === 'init') { + kind = 'method'; + } + if (!computed) { + if (isStatic && this.isPropertyKey(key, 'prototype')) { + this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype); + } + if (!isStatic && this.isPropertyKey(key, 'constructor')) { + if (kind !== 'method' || !method || (value && value.generator)) { + this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod); + } + if (hasConstructor.value) { + this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor); + } + else { + hasConstructor.value = true; + } + kind = 'constructor'; + } } - - }, this); - this._sources = newSources; - this._names = newNames; - - // Copy sourcesContents of applied map. - aSourceMapConsumer.sources.forEach(function (sourceFile) { - var content = aSourceMapConsumer.sourceContentFor(sourceFile); - if (content != null) { - if (aSourceMapPath != null) { - sourceFile = util.join(aSourceMapPath, sourceFile); - } - if (sourceRoot != null) { - sourceFile = util.relative(sourceRoot, sourceFile); - } - this.setSourceContent(sourceFile, content); + return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic)); + }; + Parser.prototype.parseClassElementList = function () { + var body = []; + var hasConstructor = { value: false }; + this.expect('{'); + while (!this.match('}')) { + if (this.match(';')) { + this.nextToken(); + } + else { + body.push(this.parseClassElement(hasConstructor)); + } } - }, this); + this.expect('}'); + return body; }; - - /** - * A mapping can have one of the three levels of data: - * - * 1. Just the generated position. - * 2. The Generated position, original position, and original source. - * 3. Generated and original position, original source, as well as a name - * token. - * - * To maintain consistency, we validate that any new mapping being added falls - * in to one of these categories. - */ - SourceMapGenerator.prototype._validateMapping = - function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource, - aName) { - if (aGenerated && 'line' in aGenerated && 'column' in aGenerated - && aGenerated.line > 0 && aGenerated.column >= 0 - && !aOriginal && !aSource && !aName) { - // Case 1. - return; - } - else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated - && aOriginal && 'line' in aOriginal && 'column' in aOriginal - && aGenerated.line > 0 && aGenerated.column >= 0 - && aOriginal.line > 0 && aOriginal.column >= 0 - && aSource) { - // Cases 2 and 3. - return; - } - else { - throw new Error('Invalid mapping: ' + JSON.stringify({ - generated: aGenerated, - source: aSource, - original: aOriginal, - name: aName - })); - } + Parser.prototype.parseClassBody = function () { + var node = this.createNode(); + var elementList = this.parseClassElementList(); + return this.finalize(node, new Node.ClassBody(elementList)); }; - - /** - * Serialize the accumulated mappings in to the stream of base 64 VLQs - * specified by the source map format. - */ - SourceMapGenerator.prototype._serializeMappings = - function SourceMapGenerator_serializeMappings() { - var previousGeneratedColumn = 0; - var previousGeneratedLine = 1; - var previousOriginalColumn = 0; - var previousOriginalLine = 0; - var previousName = 0; - var previousSource = 0; - var result = ''; - var mapping; - var nameIdx; - var sourceIdx; - - var mappings = this._mappings.toArray(); - for (var i = 0, len = mappings.length; i < len; i++) { - mapping = mappings[i]; - - if (mapping.generatedLine !== previousGeneratedLine) { - previousGeneratedColumn = 0; - while (mapping.generatedLine !== previousGeneratedLine) { - result += ';'; - previousGeneratedLine++; - } + Parser.prototype.parseClassDeclaration = function (identifierIsOptional) { + var node = this.createNode(); + var previousStrict = this.context.strict; + this.context.strict = true; + this.expectKeyword('class'); + var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier(); + var superClass = null; + if (this.matchKeyword('extends')) { + this.nextToken(); + superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); } - else { - if (i > 0) { - if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) { - continue; - } - result += ','; - } - } - - result += base64VLQ.encode(mapping.generatedColumn - - previousGeneratedColumn); - previousGeneratedColumn = mapping.generatedColumn; - - if (mapping.source != null) { - sourceIdx = this._sources.indexOf(mapping.source); - result += base64VLQ.encode(sourceIdx - previousSource); - previousSource = sourceIdx; - - // lines are stored 0-based in SourceMap spec version 3 - result += base64VLQ.encode(mapping.originalLine - 1 - - previousOriginalLine); - previousOriginalLine = mapping.originalLine - 1; - - result += base64VLQ.encode(mapping.originalColumn - - previousOriginalColumn); - previousOriginalColumn = mapping.originalColumn; - - if (mapping.name != null) { - nameIdx = this._names.indexOf(mapping.name); - result += base64VLQ.encode(nameIdx - previousName); - previousName = nameIdx; - } + var classBody = this.parseClassBody(); + this.context.strict = previousStrict; + return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody)); + }; + Parser.prototype.parseClassExpression = function () { + var node = this.createNode(); + var previousStrict = this.context.strict; + this.context.strict = true; + this.expectKeyword('class'); + var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null; + var superClass = null; + if (this.matchKeyword('extends')) { + this.nextToken(); + superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); } - } - - return result; + var classBody = this.parseClassBody(); + this.context.strict = previousStrict; + return this.finalize(node, new Node.ClassExpression(id, superClass, classBody)); }; - - SourceMapGenerator.prototype._generateSourcesContent = - function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) { - return aSources.map(function (source) { - if (!this._sourcesContents) { - return null; - } - if (aSourceRoot != null) { - source = util.relative(aSourceRoot, source); - } - var key = util.toSetString(source); - return Object.prototype.hasOwnProperty.call(this._sourcesContents, - key) - ? this._sourcesContents[key] - : null; - }, this); + // https://tc39.github.io/ecma262/#sec-scripts + // https://tc39.github.io/ecma262/#sec-modules + Parser.prototype.parseModule = function () { + this.context.strict = true; + this.context.isModule = true; + this.scanner.isModule = true; + var node = this.createNode(); + var body = this.parseDirectivePrologues(); + while (this.lookahead.type !== 2 /* EOF */) { + body.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.Module(body)); }; - - /** - * Externalize the source map. - */ - SourceMapGenerator.prototype.toJSON = - function SourceMapGenerator_toJSON() { - var map = { - version: this._version, - sources: this._sources.toArray(), - names: this._names.toArray(), - mappings: this._serializeMappings() - }; - if (this._file != null) { - map.file = this._file; - } - if (this._sourceRoot != null) { - map.sourceRoot = this._sourceRoot; - } - if (this._sourcesContents) { - map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot); - } - - return map; + Parser.prototype.parseScript = function () { + var node = this.createNode(); + var body = this.parseDirectivePrologues(); + while (this.lookahead.type !== 2 /* EOF */) { + body.push(this.parseStatementListItem()); + } + return this.finalize(node, new Node.Script(body)); }; - - /** - * Render the source map being generated to a string. - */ - SourceMapGenerator.prototype.toString = - function SourceMapGenerator_toString() { - return JSON.stringify(this.toJSON()); + // https://tc39.github.io/ecma262/#sec-imports + Parser.prototype.parseModuleSpecifier = function () { + var node = this.createNode(); + if (this.lookahead.type !== 8 /* StringLiteral */) { + this.throwError(messages_1.Messages.InvalidModuleSpecifier); + } + var token = this.nextToken(); + var raw = this.getTokenRaw(token); + return this.finalize(node, new Node.Literal(token.value, raw)); }; - - exports.SourceMapGenerator = SourceMapGenerator; - } - - -/***/ }, -/* 2 */ -/***/ function(module, exports, __webpack_require__) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - * - * Based on the Base 64 VLQ implementation in Closure Compiler: - * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java - * - * Copyright 2011 The Closure Compiler Authors. All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - { - var base64 = __webpack_require__(3); - - // A single base 64 digit can contain 6 bits of data. For the base 64 variable - // length quantities we use in the source map spec, the first bit is the sign, - // the next four bits are the actual value, and the 6th bit is the - // continuation bit. The continuation bit tells us whether there are more - // digits in this value following this digit. - // - // Continuation - // | Sign - // | | - // V V - // 101011 - - var VLQ_BASE_SHIFT = 5; - - // binary: 100000 - var VLQ_BASE = 1 << VLQ_BASE_SHIFT; - - // binary: 011111 - var VLQ_BASE_MASK = VLQ_BASE - 1; - - // binary: 100000 - var VLQ_CONTINUATION_BIT = VLQ_BASE; - - /** - * Converts from a two-complement value to a value where the sign bit is - * placed in the least significant bit. For example, as decimals: - * 1 becomes 2 (10 binary), -1 becomes 3 (11 binary) - * 2 becomes 4 (100 binary), -2 becomes 5 (101 binary) - */ - function toVLQSigned(aValue) { - return aValue < 0 - ? ((-aValue) << 1) + 1 - : (aValue << 1) + 0; - } - - /** - * Converts to a two-complement value from a value where the sign bit is - * placed in the least significant bit. For example, as decimals: - * 2 (10 binary) becomes 1, 3 (11 binary) becomes -1 - * 4 (100 binary) becomes 2, 5 (101 binary) becomes -2 - */ - function fromVLQSigned(aValue) { - var isNegative = (aValue & 1) === 1; - var shifted = aValue >> 1; - return isNegative - ? -shifted - : shifted; - } - - /** - * Returns the base 64 VLQ encoded value. - */ - exports.encode = function base64VLQ_encode(aValue) { - var encoded = ""; - var digit; - - var vlq = toVLQSigned(aValue); - - do { - digit = vlq & VLQ_BASE_MASK; - vlq >>>= VLQ_BASE_SHIFT; - if (vlq > 0) { - // There are still more digits in this value, so we must make sure the - // continuation bit is marked. - digit |= VLQ_CONTINUATION_BIT; - } - encoded += base64.encode(digit); - } while (vlq > 0); - - return encoded; - }; - - /** - * Decodes the next base 64 VLQ value from the given string and returns the - * value and the rest of the string via the out parameter. - */ - exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) { - var strLen = aStr.length; - var result = 0; - var shift = 0; - var continuation, digit; - - do { - if (aIndex >= strLen) { - throw new Error("Expected more digits in base 64 VLQ value."); - } - - digit = base64.decode(aStr.charCodeAt(aIndex++)); - if (digit === -1) { - throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1)); - } - - continuation = !!(digit & VLQ_CONTINUATION_BIT); - digit &= VLQ_BASE_MASK; - result = result + (digit << shift); - shift += VLQ_BASE_SHIFT; - } while (continuation); - - aOutParam.value = fromVLQSigned(result); - aOutParam.rest = aIndex; - }; - } - - -/***/ }, -/* 3 */ -/***/ function(module, exports) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split(''); - - /** - * Encode an integer in the range of 0 to 63 to a single base 64 digit. - */ - exports.encode = function (number) { - if (0 <= number && number < intToCharMap.length) { - return intToCharMap[number]; - } - throw new TypeError("Must be between 0 and 63: " + number); - }; - - /** - * Decode a single base 64 character code digit to an integer. Returns -1 on - * failure. - */ - exports.decode = function (charCode) { - var bigA = 65; // 'A' - var bigZ = 90; // 'Z' - - var littleA = 97; // 'a' - var littleZ = 122; // 'z' - - var zero = 48; // '0' - var nine = 57; // '9' - - var plus = 43; // '+' - var slash = 47; // '/' - - var littleOffset = 26; - var numberOffset = 52; - - // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ - if (bigA <= charCode && charCode <= bigZ) { - return (charCode - bigA); - } - - // 26 - 51: abcdefghijklmnopqrstuvwxyz - if (littleA <= charCode && charCode <= littleZ) { - return (charCode - littleA + littleOffset); - } - - // 52 - 61: 0123456789 - if (zero <= charCode && charCode <= nine) { - return (charCode - zero + numberOffset); - } - - // 62: + - if (charCode == plus) { - return 62; - } - - // 63: / - if (charCode == slash) { - return 63; - } - - // Invalid base64 digit. - return -1; - }; - } - - -/***/ }, -/* 4 */ -/***/ function(module, exports) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - /** - * This is a helper function for getting values from parameter/options - * objects. - * - * @param args The object we are extracting values from - * @param name The name of the property we are getting. - * @param defaultValue An optional value to return if the property is missing - * from the object. If this is not specified and the property is missing, an - * error will be thrown. - */ - function getArg(aArgs, aName, aDefaultValue) { - if (aName in aArgs) { - return aArgs[aName]; - } else if (arguments.length === 3) { - return aDefaultValue; - } else { - throw new Error('"' + aName + '" is a required argument.'); - } - } - exports.getArg = getArg; - - var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/; - var dataUrlRegexp = /^data:.+\,.+$/; - - function urlParse(aUrl) { - var match = aUrl.match(urlRegexp); - if (!match) { - return null; - } - return { - scheme: match[1], - auth: match[2], - host: match[3], - port: match[4], - path: match[5] + // import {} ...; + Parser.prototype.parseImportSpecifier = function () { + var node = this.createNode(); + var imported; + var local; + if (this.lookahead.type === 3 /* Identifier */) { + imported = this.parseVariableIdentifier(); + local = imported; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + local = this.parseVariableIdentifier(); + } + } + else { + imported = this.parseIdentifierName(); + local = imported; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + local = this.parseVariableIdentifier(); + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + } + return this.finalize(node, new Node.ImportSpecifier(local, imported)); }; - } - exports.urlParse = urlParse; - - function urlGenerate(aParsedUrl) { - var url = ''; - if (aParsedUrl.scheme) { - url += aParsedUrl.scheme + ':'; - } - url += '//'; - if (aParsedUrl.auth) { - url += aParsedUrl.auth + '@'; - } - if (aParsedUrl.host) { - url += aParsedUrl.host; - } - if (aParsedUrl.port) { - url += ":" + aParsedUrl.port - } - if (aParsedUrl.path) { - url += aParsedUrl.path; - } - return url; - } - exports.urlGenerate = urlGenerate; - - /** - * Normalizes a path, or the path portion of a URL: - * - * - Replaces consequtive slashes with one slash. - * - Removes unnecessary '.' parts. - * - Removes unnecessary '/..' parts. - * - * Based on code in the Node.js 'path' core module. - * - * @param aPath The path or url to normalize. - */ - function normalize(aPath) { - var path = aPath; - var url = urlParse(aPath); - if (url) { - if (!url.path) { - return aPath; - } - path = url.path; - } - var isAbsolute = exports.isAbsolute(path); - - var parts = path.split(/\/+/); - for (var part, up = 0, i = parts.length - 1; i >= 0; i--) { - part = parts[i]; - if (part === '.') { - parts.splice(i, 1); - } else if (part === '..') { - up++; - } else if (up > 0) { - if (part === '') { - // The first part is blank if the path is absolute. Trying to go - // above the root is a no-op. Therefore we can remove all '..' parts - // directly after the root. - parts.splice(i + 1, up); - up = 0; - } else { - parts.splice(i, 2); - up--; + // {foo, bar as bas} + Parser.prototype.parseNamedImports = function () { + this.expect('{'); + var specifiers = []; + while (!this.match('}')) { + specifiers.push(this.parseImportSpecifier()); + if (!this.match('}')) { + this.expect(','); + } } - } - } - path = parts.join('/'); - - if (path === '') { - path = isAbsolute ? '/' : '.'; - } - - if (url) { - url.path = path; - return urlGenerate(url); - } - return path; - } - exports.normalize = normalize; - - /** - * Joins two paths/URLs. - * - * @param aRoot The root path or URL. - * @param aPath The path or URL to be joined with the root. - * - * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a - * scheme-relative URL: Then the scheme of aRoot, if any, is prepended - * first. - * - Otherwise aPath is a path. If aRoot is a URL, then its path portion - * is updated with the result and aRoot is returned. Otherwise the result - * is returned. - * - If aPath is absolute, the result is aPath. - * - Otherwise the two paths are joined with a slash. - * - Joining for example 'http://' and 'www.example.com' is also supported. - */ - function join(aRoot, aPath) { - if (aRoot === "") { - aRoot = "."; - } - if (aPath === "") { - aPath = "."; - } - var aPathUrl = urlParse(aPath); - var aRootUrl = urlParse(aRoot); - if (aRootUrl) { - aRoot = aRootUrl.path || '/'; - } - - // `join(foo, '//www.example.org')` - if (aPathUrl && !aPathUrl.scheme) { - if (aRootUrl) { - aPathUrl.scheme = aRootUrl.scheme; - } - return urlGenerate(aPathUrl); - } - - if (aPathUrl || aPath.match(dataUrlRegexp)) { - return aPath; - } - - // `join('http://', 'www.example.com')` - if (aRootUrl && !aRootUrl.host && !aRootUrl.path) { - aRootUrl.host = aPath; - return urlGenerate(aRootUrl); - } - - var joined = aPath.charAt(0) === '/' - ? aPath - : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath); - - if (aRootUrl) { - aRootUrl.path = joined; - return urlGenerate(aRootUrl); - } - return joined; - } - exports.join = join; - - exports.isAbsolute = function (aPath) { - return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp); - }; - - /** - * Make a path relative to a URL or another path. - * - * @param aRoot The root path or URL. - * @param aPath The path or URL to be made relative to aRoot. - */ - function relative(aRoot, aPath) { - if (aRoot === "") { - aRoot = "."; - } - - aRoot = aRoot.replace(/\/$/, ''); - - // It is possible for the path to be above the root. In this case, simply - // checking whether the root is a prefix of the path won't work. Instead, we - // need to remove components from the root one by one, until either we find - // a prefix that fits, or we run out of components to remove. - var level = 0; - while (aPath.indexOf(aRoot + '/') !== 0) { - var index = aRoot.lastIndexOf("/"); - if (index < 0) { - return aPath; - } - - // If the only part of the root that is left is the scheme (i.e. http://, - // file:///, etc.), one or more slashes (/), or simply nothing at all, we - // have exhausted all components, so the path is not relative to the root. - aRoot = aRoot.slice(0, index); - if (aRoot.match(/^([^\/]+:\/)?\/*$/)) { - return aPath; - } - - ++level; - } - - // Make sure we add a "../" for each component we removed from the root. - return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1); - } - exports.relative = relative; - - /** - * Because behavior goes wacky when you set `__proto__` on objects, we - * have to prefix all the strings in our set with an arbitrary character. - * - * See https://github.com/mozilla/source-map/pull/31 and - * https://github.com/mozilla/source-map/issues/30 - * - * @param String aStr - */ - function toSetString(aStr) { - return '$' + aStr; - } - exports.toSetString = toSetString; - - function fromSetString(aStr) { - return aStr.substr(1); - } - exports.fromSetString = fromSetString; - - /** - * Comparator between two mappings where the original positions are compared. - * - * Optionally pass in `true` as `onlyCompareGenerated` to consider two - * mappings with the same original source/line/column, but different generated - * line and column the same. Useful when searching for a mapping with a - * stubbed out mapping. - */ - function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) { - var cmp = mappingA.source - mappingB.source; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalLine - mappingB.originalLine; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalColumn - mappingB.originalColumn; - if (cmp !== 0 || onlyCompareOriginal) { - return cmp; - } - - cmp = mappingA.generatedColumn - mappingB.generatedColumn; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.generatedLine - mappingB.generatedLine; - if (cmp !== 0) { - return cmp; - } - - return mappingA.name - mappingB.name; - } - exports.compareByOriginalPositions = compareByOriginalPositions; - - /** - * Comparator between two mappings with deflated source and name indices where - * the generated positions are compared. - * - * Optionally pass in `true` as `onlyCompareGenerated` to consider two - * mappings with the same generated line and column, but different - * source/name/original line and column the same. Useful when searching for a - * mapping with a stubbed out mapping. - */ - function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) { - var cmp = mappingA.generatedLine - mappingB.generatedLine; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.generatedColumn - mappingB.generatedColumn; - if (cmp !== 0 || onlyCompareGenerated) { - return cmp; - } - - cmp = mappingA.source - mappingB.source; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalLine - mappingB.originalLine; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalColumn - mappingB.originalColumn; - if (cmp !== 0) { - return cmp; - } - - return mappingA.name - mappingB.name; - } - exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated; - - function strcmp(aStr1, aStr2) { - if (aStr1 === aStr2) { - return 0; - } - - if (aStr1 > aStr2) { - return 1; - } - - return -1; - } - - /** - * Comparator between two mappings with inflated source and name strings where - * the generated positions are compared. - */ - function compareByGeneratedPositionsInflated(mappingA, mappingB) { - var cmp = mappingA.generatedLine - mappingB.generatedLine; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.generatedColumn - mappingB.generatedColumn; - if (cmp !== 0) { - return cmp; - } - - cmp = strcmp(mappingA.source, mappingB.source); - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalLine - mappingB.originalLine; - if (cmp !== 0) { - return cmp; - } - - cmp = mappingA.originalColumn - mappingB.originalColumn; - if (cmp !== 0) { - return cmp; - } - - return strcmp(mappingA.name, mappingB.name); - } - exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated; - } + this.expect('}'); + return specifiers; + }; + // import ...; + Parser.prototype.parseImportDefaultSpecifier = function () { + var node = this.createNode(); + var local = this.parseIdentifierName(); + return this.finalize(node, new Node.ImportDefaultSpecifier(local)); + }; + // import <* as foo> ...; + Parser.prototype.parseImportNamespaceSpecifier = function () { + var node = this.createNode(); + this.expect('*'); + if (!this.matchContextualKeyword('as')) { + this.throwError(messages_1.Messages.NoAsAfterImportNamespace); + } + this.nextToken(); + var local = this.parseIdentifierName(); + return this.finalize(node, new Node.ImportNamespaceSpecifier(local)); + }; + Parser.prototype.parseImportDeclaration = function () { + if (this.context.inFunctionBody) { + this.throwError(messages_1.Messages.IllegalImportDeclaration); + } + var node = this.createNode(); + this.expectKeyword('import'); + var src; + var specifiers = []; + if (this.lookahead.type === 8 /* StringLiteral */) { + // import 'foo'; + src = this.parseModuleSpecifier(); + } + else { + if (this.match('{')) { + // import {bar} + specifiers = specifiers.concat(this.parseNamedImports()); + } + else if (this.match('*')) { + // import * as foo + specifiers.push(this.parseImportNamespaceSpecifier()); + } + else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) { + // import foo + specifiers.push(this.parseImportDefaultSpecifier()); + if (this.match(',')) { + this.nextToken(); + if (this.match('*')) { + // import foo, * as foo + specifiers.push(this.parseImportNamespaceSpecifier()); + } + else if (this.match('{')) { + // import foo, {bar} + specifiers = specifiers.concat(this.parseNamedImports()); + } + else { + this.throwUnexpectedToken(this.lookahead); + } + } + } + else { + this.throwUnexpectedToken(this.nextToken()); + } + if (!this.matchContextualKeyword('from')) { + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + this.nextToken(); + src = this.parseModuleSpecifier(); + } + this.consumeSemicolon(); + return this.finalize(node, new Node.ImportDeclaration(specifiers, src)); + }; + // https://tc39.github.io/ecma262/#sec-exports + Parser.prototype.parseExportSpecifier = function () { + var node = this.createNode(); + var local = this.parseIdentifierName(); + var exported = local; + if (this.matchContextualKeyword('as')) { + this.nextToken(); + exported = this.parseIdentifierName(); + } + return this.finalize(node, new Node.ExportSpecifier(local, exported)); + }; + Parser.prototype.parseExportDeclaration = function () { + if (this.context.inFunctionBody) { + this.throwError(messages_1.Messages.IllegalExportDeclaration); + } + var node = this.createNode(); + this.expectKeyword('export'); + var exportDeclaration; + if (this.matchKeyword('default')) { + // export default ... + this.nextToken(); + if (this.matchKeyword('function')) { + // export default function foo () {} + // export default function () {} + var declaration = this.parseFunctionDeclaration(true); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else if (this.matchKeyword('class')) { + // export default class foo {} + var declaration = this.parseClassDeclaration(true); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else if (this.matchContextualKeyword('async')) { + // export default async function f () {} + // export default async function () {} + // export default async x => x + var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression(); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + else { + if (this.matchContextualKeyword('from')) { + this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value); + } + // export default {}; + // export default []; + // export default (1 + 2); + var declaration = this.match('{') ? this.parseObjectInitializer() : + this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression(); + this.consumeSemicolon(); + exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); + } + } + else if (this.match('*')) { + // export * from 'foo'; + this.nextToken(); + if (!this.matchContextualKeyword('from')) { + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + this.nextToken(); + var src = this.parseModuleSpecifier(); + this.consumeSemicolon(); + exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src)); + } + else if (this.lookahead.type === 4 /* Keyword */) { + // export var f = 1; + var declaration = void 0; + switch (this.lookahead.value) { + case 'let': + case 'const': + declaration = this.parseLexicalDeclaration({ inFor: false }); + break; + case 'var': + case 'class': + case 'function': + declaration = this.parseStatementListItem(); + break; + default: + this.throwUnexpectedToken(this.lookahead); + } + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); + } + else if (this.matchAsyncFunction()) { + var declaration = this.parseFunctionDeclaration(); + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); + } + else { + var specifiers = []; + var source = null; + var isExportFromIdentifier = false; + this.expect('{'); + while (!this.match('}')) { + isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default'); + specifiers.push(this.parseExportSpecifier()); + if (!this.match('}')) { + this.expect(','); + } + } + this.expect('}'); + if (this.matchContextualKeyword('from')) { + // export {default} from 'foo'; + // export {foo} from 'foo'; + this.nextToken(); + source = this.parseModuleSpecifier(); + this.consumeSemicolon(); + } + else if (isExportFromIdentifier) { + // export {default}; // missing fromClause + var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; + this.throwError(message, this.lookahead.value); + } + else { + // export {foo}; + this.consumeSemicolon(); + } + exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source)); + } + return exportDeclaration; + }; + return Parser; + }()); + exports.Parser = Parser; /***/ }, -/* 5 */ -/***/ function(module, exports, __webpack_require__) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - var util = __webpack_require__(4); - - /** - * A data structure which is a combination of an array and a set. Adding a new - * member is O(1), testing for membership is O(1), and finding the index of an - * element is O(1). Removing elements from the set is not supported. Only - * strings are supported for membership. - */ - function ArraySet() { - this._array = []; - this._set = {}; - } - - /** - * Static method for creating ArraySet instances from an existing array. - */ - ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) { - var set = new ArraySet(); - for (var i = 0, len = aArray.length; i < len; i++) { - set.add(aArray[i], aAllowDuplicates); - } - return set; - }; - - /** - * Return how many unique items are in this ArraySet. If duplicates have been - * added, than those do not count towards the size. - * - * @returns Number - */ - ArraySet.prototype.size = function ArraySet_size() { - return Object.getOwnPropertyNames(this._set).length; - }; - - /** - * Add the given string to this set. - * - * @param String aStr - */ - ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) { - var sStr = util.toSetString(aStr); - var isDuplicate = this._set.hasOwnProperty(sStr); - var idx = this._array.length; - if (!isDuplicate || aAllowDuplicates) { - this._array.push(aStr); - } - if (!isDuplicate) { - this._set[sStr] = idx; - } - }; - - /** - * Is the given string a member of this set? - * - * @param String aStr - */ - ArraySet.prototype.has = function ArraySet_has(aStr) { - var sStr = util.toSetString(aStr); - return this._set.hasOwnProperty(sStr); - }; - - /** - * What is the index of the given string in the array? - * - * @param String aStr - */ - ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) { - var sStr = util.toSetString(aStr); - if (this._set.hasOwnProperty(sStr)) { - return this._set[sStr]; - } - throw new Error('"' + aStr + '" is not in the set.'); - }; +/* 9 */ +/***/ function(module, exports) { - /** - * What is the element at the given index? - * - * @param Number aIdx - */ - ArraySet.prototype.at = function ArraySet_at(aIdx) { - if (aIdx >= 0 && aIdx < this._array.length) { - return this._array[aIdx]; + "use strict"; + // Ensure the condition is true, otherwise throw an error. + // This is only to have a better contract semantic, i.e. another safety net + // to catch a logic error. The condition shall be fulfilled in normal case. + // Do NOT use this to enforce a certain condition on any user input. + Object.defineProperty(exports, "__esModule", { value: true }); + function assert(condition, message) { + /* istanbul ignore if */ + if (!condition) { + throw new Error('ASSERT: ' + message); } - throw new Error('No element indexed by ' + aIdx); - }; - - /** - * Returns the array representation of this set (which has the proper indices - * indicated by indexOf). Note that this is a copy of the internal array used - * for storing the members so that no one can mess with internal state. - */ - ArraySet.prototype.toArray = function ArraySet_toArray() { - return this._array.slice(); - }; - - exports.ArraySet = ArraySet; } + exports.assert = assert; /***/ }, -/* 6 */ -/***/ function(module, exports, __webpack_require__) { - - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2014 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - var util = __webpack_require__(4); - - /** - * Determine whether mappingB is after mappingA with respect to generated - * position. - */ - function generatedPositionAfter(mappingA, mappingB) { - // Optimized for most common case - var lineA = mappingA.generatedLine; - var lineB = mappingB.generatedLine; - var columnA = mappingA.generatedColumn; - var columnB = mappingB.generatedColumn; - return lineB > lineA || lineB == lineA && columnB >= columnA || - util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0; - } - - /** - * A data structure to provide a sorted view of accumulated mappings in a - * performance conscious manner. It trades a neglibable overhead in general - * case for a large speedup in case of mappings being added in order. - */ - function MappingList() { - this._array = []; - this._sorted = true; - // Serves as infimum - this._last = {generatedLine: -1, generatedColumn: 0}; - } +/* 10 */ +/***/ function(module, exports) { - /** - * Iterate through internal items. This method takes the same arguments that - * `Array.prototype.forEach` takes. - * - * NOTE: The order of the mappings is NOT guaranteed. - */ - MappingList.prototype.unsortedForEach = - function MappingList_forEach(aCallback, aThisArg) { - this._array.forEach(aCallback, aThisArg); + "use strict"; + /* tslint:disable:max-classes-per-file */ + Object.defineProperty(exports, "__esModule", { value: true }); + var ErrorHandler = (function () { + function ErrorHandler() { + this.errors = []; + this.tolerant = false; + } + ErrorHandler.prototype.recordError = function (error) { + this.errors.push(error); + }; + ErrorHandler.prototype.tolerate = function (error) { + if (this.tolerant) { + this.recordError(error); + } + else { + throw error; + } + }; + ErrorHandler.prototype.constructError = function (msg, column) { + var error = new Error(msg); + try { + throw error; + } + catch (base) { + /* istanbul ignore else */ + if (Object.create && Object.defineProperty) { + error = Object.create(base); + Object.defineProperty(error, 'column', { value: column }); + } + } + /* istanbul ignore next */ + return error; + }; + ErrorHandler.prototype.createError = function (index, line, col, description) { + var msg = 'Line ' + line + ': ' + description; + var error = this.constructError(msg, col); + error.index = index; + error.lineNumber = line; + error.description = description; + return error; }; + ErrorHandler.prototype.throwError = function (index, line, col, description) { + throw this.createError(index, line, col, description); + }; + ErrorHandler.prototype.tolerateError = function (index, line, col, description) { + var error = this.createError(index, line, col, description); + if (this.tolerant) { + this.recordError(error); + } + else { + throw error; + } + }; + return ErrorHandler; + }()); + exports.ErrorHandler = ErrorHandler; - /** - * Add the given source mapping. - * - * @param Object aMapping - */ - MappingList.prototype.add = function MappingList_add(aMapping) { - if (generatedPositionAfter(this._last, aMapping)) { - this._last = aMapping; - this._array.push(aMapping); - } else { - this._sorted = false; - this._array.push(aMapping); - } - }; - /** - * Returns the flat, sorted array of mappings. The mappings are sorted by - * generated position. - * - * WARNING: This method returns internal data without copying, for - * performance. The return value must NOT be mutated, and should be treated as - * an immutable borrow. If you want to take ownership, you must make your own - * copy. - */ - MappingList.prototype.toArray = function MappingList_toArray() { - if (!this._sorted) { - this._array.sort(util.compareByGeneratedPositionsInflated); - this._sorted = true; - } - return this._array; - }; +/***/ }, +/* 11 */ +/***/ function(module, exports) { - exports.MappingList = MappingList; - } + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + // Error messages should be identical to V8. + exports.Messages = { + BadGetterArity: 'Getter must not have any formal parameters', + BadSetterArity: 'Setter must have exactly one formal parameter', + BadSetterRestParameter: 'Setter function argument must not be a rest parameter', + ConstructorIsAsync: 'Class constructor may not be an async method', + ConstructorSpecialMethod: 'Class constructor may not be an accessor', + DeclarationMissingInitializer: 'Missing initializer in %0 declaration', + DefaultRestParameter: 'Unexpected token =', + DuplicateBinding: 'Duplicate binding %0', + DuplicateConstructor: 'A class may only have one constructor', + DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals', + ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer', + GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts', + IllegalBreak: 'Illegal break statement', + IllegalContinue: 'Illegal continue statement', + IllegalExportDeclaration: 'Unexpected token', + IllegalImportDeclaration: 'Unexpected token', + IllegalLanguageModeDirective: 'Illegal \'use strict\' directive in function with non-simple parameter list', + IllegalReturn: 'Illegal return statement', + InvalidEscapedReservedWord: 'Keyword must not contain escaped characters', + InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence', + InvalidLHSInAssignment: 'Invalid left-hand side in assignment', + InvalidLHSInForIn: 'Invalid left-hand side in for-in', + InvalidLHSInForLoop: 'Invalid left-hand side in for-loop', + InvalidModuleSpecifier: 'Unexpected token', + InvalidRegExp: 'Invalid regular expression', + LetInLexicalBinding: 'let is disallowed as a lexically bound name', + MissingFromClause: 'Unexpected token', + MultipleDefaultsInSwitch: 'More than one default clause in switch statement', + NewlineAfterThrow: 'Illegal newline after throw', + NoAsAfterImportNamespace: 'Unexpected token', + NoCatchOrFinally: 'Missing catch or finally after try', + ParameterAfterRestParameter: 'Rest parameter must be last formal parameter', + Redeclaration: '%0 \'%1\' has already been declared', + StaticPrototype: 'Classes may not have static property named prototype', + StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', + StrictDelete: 'Delete of an unqualified identifier in strict mode.', + StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block', + StrictFunctionName: 'Function name may not be eval or arguments in strict mode', + StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', + StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', + StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', + StrictModeWith: 'Strict mode code may not include a with statement', + StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', + StrictParamDupe: 'Strict mode function may not have duplicate parameter names', + StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', + StrictReservedWord: 'Use of future reserved word in strict mode', + StrictVarName: 'Variable name may not be eval or arguments in strict mode', + TemplateOctalLiteral: 'Octal literals are not allowed in template strings.', + UnexpectedEOS: 'Unexpected end of input', + UnexpectedIdentifier: 'Unexpected identifier', + UnexpectedNumber: 'Unexpected number', + UnexpectedReserved: 'Unexpected reserved word', + UnexpectedString: 'Unexpected string', + UnexpectedTemplate: 'Unexpected quasi %0', + UnexpectedToken: 'Unexpected token %0', + UnexpectedTokenIllegal: 'Unexpected token ILLEGAL', + UnknownLabel: 'Undefined label \'%0\'', + UnterminatedRegExp: 'Invalid regular expression: missing /' + }; /***/ }, -/* 7 */ +/* 12 */ /***/ function(module, exports, __webpack_require__) { - /* -*- Mode: js; js-indent-level: 2; -*- */ - /* - * Copyright 2011 Mozilla Foundation and contributors - * Licensed under the New BSD license. See LICENSE or: - * http://opensource.org/licenses/BSD-3-Clause - */ - { - var util = __webpack_require__(4); - var binarySearch = __webpack_require__(8); - var ArraySet = __webpack_require__(5).ArraySet; - var base64VLQ = __webpack_require__(2); - var quickSort = __webpack_require__(9).quickSort; - - function SourceMapConsumer(aSourceMap) { - var sourceMap = aSourceMap; - if (typeof aSourceMap === 'string') { - sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, '')); - } - - return sourceMap.sections != null - ? new IndexedSourceMapConsumer(sourceMap) - : new BasicSourceMapConsumer(sourceMap); - } - - SourceMapConsumer.fromSourceMap = function(aSourceMap) { - return BasicSourceMapConsumer.fromSourceMap(aSourceMap); - } - - /** - * The version of the source mapping spec that we are consuming. - */ - SourceMapConsumer.prototype._version = 3; - - // `__generatedMappings` and `__originalMappings` are arrays that hold the - // parsed mapping coordinates from the source map's "mappings" attribute. They - // are lazily instantiated, accessed via the `_generatedMappings` and - // `_originalMappings` getters respectively, and we only parse the mappings - // and create these arrays once queried for a source location. We jump through - // these hoops because there can be many thousands of mappings, and parsing - // them is expensive, so we only want to do it if we must. - // - // Each object in the arrays is of the form: - // - // { - // generatedLine: The line number in the generated code, - // generatedColumn: The column number in the generated code, - // source: The path to the original source file that generated this - // chunk of code, - // originalLine: The line number in the original source that - // corresponds to this chunk of generated code, - // originalColumn: The column number in the original source that - // corresponds to this chunk of generated code, - // name: The name of the original symbol which generated this chunk of - // code. - // } - // - // All properties except for `generatedLine` and `generatedColumn` can be - // `null`. - // - // `_generatedMappings` is ordered by the generated positions. - // - // `_originalMappings` is ordered by the original positions. - - SourceMapConsumer.prototype.__generatedMappings = null; - Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', { - get: function () { - if (!this.__generatedMappings) { - this._parseMappings(this._mappings, this.sourceRoot); - } - - return this.__generatedMappings; - } - }); - - SourceMapConsumer.prototype.__originalMappings = null; - Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', { - get: function () { - if (!this.__originalMappings) { - this._parseMappings(this._mappings, this.sourceRoot); - } - - return this.__originalMappings; + "use strict"; + Object.defineProperty(exports, "__esModule", { value: true }); + var assert_1 = __webpack_require__(9); + var character_1 = __webpack_require__(4); + var messages_1 = __webpack_require__(11); + function hexValue(ch) { + return '0123456789abcdef'.indexOf(ch.toLowerCase()); + } + function octalValue(ch) { + return '01234567'.indexOf(ch); + } + var Scanner = (function () { + function Scanner(code, handler) { + this.source = code; + this.errorHandler = handler; + this.trackComment = false; + this.isModule = false; + this.length = code.length; + this.index = 0; + this.lineNumber = (code.length > 0) ? 1 : 0; + this.lineStart = 0; + this.curlyStack = []; } - }); - - SourceMapConsumer.prototype._charIsMappingSeparator = - function SourceMapConsumer_charIsMappingSeparator(aStr, index) { - var c = aStr.charAt(index); - return c === ";" || c === ","; + Scanner.prototype.saveState = function () { + return { + index: this.index, + lineNumber: this.lineNumber, + lineStart: this.lineStart + }; }; - - /** - * Parse the mappings in a string in to a data structure which we can easily - * query (the ordered arrays in the `this.__generatedMappings` and - * `this.__originalMappings` properties). - */ - SourceMapConsumer.prototype._parseMappings = - function SourceMapConsumer_parseMappings(aStr, aSourceRoot) { - throw new Error("Subclasses must implement _parseMappings"); + Scanner.prototype.restoreState = function (state) { + this.index = state.index; + this.lineNumber = state.lineNumber; + this.lineStart = state.lineStart; }; - - SourceMapConsumer.GENERATED_ORDER = 1; - SourceMapConsumer.ORIGINAL_ORDER = 2; - - SourceMapConsumer.GREATEST_LOWER_BOUND = 1; - SourceMapConsumer.LEAST_UPPER_BOUND = 2; - - /** - * Iterate over each mapping between an original source/line/column and a - * generated line/column in this source map. - * - * @param Function aCallback - * The function that is called with each mapping. - * @param Object aContext - * Optional. If specified, this object will be the value of `this` every - * time that `aCallback` is called. - * @param aOrder - * Either `SourceMapConsumer.GENERATED_ORDER` or - * `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to - * iterate over the mappings sorted by the generated file's line/column - * order or the original's source/line/column order, respectively. Defaults to - * `SourceMapConsumer.GENERATED_ORDER`. - */ - SourceMapConsumer.prototype.eachMapping = - function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) { - var context = aContext || null; - var order = aOrder || SourceMapConsumer.GENERATED_ORDER; - - var mappings; - switch (order) { - case SourceMapConsumer.GENERATED_ORDER: - mappings = this._generatedMappings; - break; - case SourceMapConsumer.ORIGINAL_ORDER: - mappings = this._originalMappings; - break; - default: - throw new Error("Unknown order of iteration."); - } - - var sourceRoot = this.sourceRoot; - mappings.map(function (mapping) { - var source = mapping.source === null ? null : this._sources.at(mapping.source); - if (source != null && sourceRoot != null) { - source = util.join(sourceRoot, source); + Scanner.prototype.eof = function () { + return this.index >= this.length; + }; + Scanner.prototype.throwUnexpectedToken = function (message) { + if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } + return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); + }; + Scanner.prototype.tolerateUnexpectedToken = function (message) { + if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } + this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); + }; + // https://tc39.github.io/ecma262/#sec-comments + Scanner.prototype.skipSingleLineComment = function (offset) { + var comments = []; + var start, loc; + if (this.trackComment) { + comments = []; + start = this.index - offset; + loc = { + start: { + line: this.lineNumber, + column: this.index - this.lineStart - offset + }, + end: {} + }; + } + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + ++this.index; + if (character_1.Character.isLineTerminator(ch)) { + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart - 1 + }; + var entry = { + multiLine: false, + slice: [start + offset, this.index - 1], + range: [start, this.index - 1], + loc: loc + }; + comments.push(entry); + } + if (ch === 13 && this.source.charCodeAt(this.index) === 10) { + ++this.index; + } + ++this.lineNumber; + this.lineStart = this.index; + return comments; + } + } + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: false, + slice: [start + offset, this.index], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + return comments; + }; + Scanner.prototype.skipMultiLineComment = function () { + var comments = []; + var start, loc; + if (this.trackComment) { + comments = []; + start = this.index - 2; + loc = { + start: { + line: this.lineNumber, + column: this.index - this.lineStart - 2 + }, + end: {} + }; + } + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + if (character_1.Character.isLineTerminator(ch)) { + if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) { + ++this.index; + } + ++this.lineNumber; + ++this.index; + this.lineStart = this.index; + } + else if (ch === 0x2A) { + // Block comment ends with '*/'. + if (this.source.charCodeAt(this.index + 1) === 0x2F) { + this.index += 2; + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: true, + slice: [start + 2, this.index - 2], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + return comments; + } + ++this.index; + } + else { + ++this.index; + } + } + // Ran off the end of the file - the whole thing is a comment + if (this.trackComment) { + loc.end = { + line: this.lineNumber, + column: this.index - this.lineStart + }; + var entry = { + multiLine: true, + slice: [start + 2, this.index], + range: [start, this.index], + loc: loc + }; + comments.push(entry); + } + this.tolerateUnexpectedToken(); + return comments; + }; + Scanner.prototype.scanComments = function () { + var comments; + if (this.trackComment) { + comments = []; + } + var start = (this.index === 0); + while (!this.eof()) { + var ch = this.source.charCodeAt(this.index); + if (character_1.Character.isWhiteSpace(ch)) { + ++this.index; + } + else if (character_1.Character.isLineTerminator(ch)) { + ++this.index; + if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) { + ++this.index; + } + ++this.lineNumber; + this.lineStart = this.index; + start = true; + } + else if (ch === 0x2F) { + ch = this.source.charCodeAt(this.index + 1); + if (ch === 0x2F) { + this.index += 2; + var comment = this.skipSingleLineComment(2); + if (this.trackComment) { + comments = comments.concat(comment); + } + start = true; + } + else if (ch === 0x2A) { + this.index += 2; + var comment = this.skipMultiLineComment(); + if (this.trackComment) { + comments = comments.concat(comment); + } + } + else { + break; + } + } + else if (start && ch === 0x2D) { + // U+003E is '>' + if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) { + // '-->' is a single-line comment + this.index += 3; + var comment = this.skipSingleLineComment(3); + if (this.trackComment) { + comments = comments.concat(comment); + } + } + else { + break; + } + } + else if (ch === 0x3C && !this.isModule) { + if (this.source.slice(this.index + 1, this.index + 4) === '!--') { + this.index += 4; // `") && S.newline_before) { - forward(3); - return skip_line_comment("comment4"); - } - } - var ch = peek(); - if (!ch) return token("eof"); - var code = ch.charCodeAt(0); - switch (code) { - case 34: case 39: return read_string(ch); - case 46: return handle_dot(); - case 47: return handle_slash(); + if (shebang && S.pos == 0 && looking_at("#!")) { + start_token(); + forward(2); + skip_line_comment("comment5"); } - if (is_digit(code)) return read_num(); - if (PUNC_CHARS(ch)) return token("punc", next()); - if (OPERATOR_CHARS(ch)) return read_operator(); - if (code == 92 || is_identifier_start(code)) return read_word(); - - if (shebang) { - if (S.pos == 0 && looking_at("#!")) { - forward(2); - return skip_line_comment("comment5"); + for (;;) { + skip_whitespace(); + start_token(); + if (html5_comments) { + if (looking_at("") && S.newline_before) { + forward(3); + skip_line_comment("comment4"); + continue; + } } + var ch = peek(); + if (!ch) return token("eof"); + var code = ch.charCodeAt(0); + switch (code) { + case 34: case 39: return read_string(ch); + case 46: return handle_dot(); + case 47: { + var tok = handle_slash(); + if (tok === next_token) continue; + return tok; + } + } + if (is_digit(code)) return read_num(); + if (PUNC_CHARS(ch)) return token("punc", next()); + if (OPERATOR_CHARS(ch)) return read_operator(); + if (code == 92 || is_identifier_start(code)) return read_word(); + break; } parse_error("Unexpected character '" + ch + "'"); }; @@ -20100,6 +16279,35 @@ function tokenizer($TEXT, filename, html5_comments, shebang) { return S; }; + next_token.add_directive = function(directive) { + S.directive_stack[S.directive_stack.length - 1].push(directive); + + if (S.directives[directive] === undefined) { + S.directives[directive] = 1; + } else { + S.directives[directive]++; + } + } + + next_token.push_directives_stack = function() { + S.directive_stack.push([]); + } + + next_token.pop_directives_stack = function() { + var directives = S.directive_stack[S.directive_stack.length - 1]; + + for (var i = 0; i < directives.length; i++) { + S.directives[directives[i]]--; + } + + S.directive_stack.pop(); + } + + next_token.has_directive = function(directive) { + return S.directives[directive] !== undefined && + S.directives[directive] > 0; + } + return next_token; }; @@ -20155,13 +16363,14 @@ var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "nam function parse($TEXT, options) { options = defaults(options, { - strict : false, - filename : null, - toplevel : null, + bare_returns : false, + cli : false, expression : false, + filename : null, html5_comments : true, - bare_returns : false, shebang : true, + strict : false, + toplevel : null, }); var S = { @@ -20238,9 +16447,9 @@ function parse($TEXT, options) { ); }; - function semicolon() { + function semicolon(optional) { if (is("punc", ";")) next(); - else if (!can_insert_semicolon()) unexpected(); + else if (!optional && !can_insert_semicolon()) unexpected(); }; function parenthesised() { @@ -20269,21 +16478,23 @@ function parse($TEXT, options) { }; var statement = embed_tokens(function() { - var tmp; handle_regexp(); switch (S.token.type) { case "string": - var dir = S.in_directives, stat = simple_statement(); - // XXXv2: decide how to fix directives - if (dir && stat.body instanceof AST_String && !is("punc", ",")) { - return new AST_Directive({ - start : stat.body.start, - end : stat.body.end, - quote : stat.body.quote, - value : stat.body.value, - }); + if (S.in_directives) { + var token = peek(); + if (S.token.raw.indexOf("\\") == -1 + && (token.nlb + || is_token(token, "eof") + || is_token(token, "punc", ";") + || is_token(token, "punc", "}"))) { + S.input.add_directive(S.token.value); + } else { + S.in_directives = false; + } } - return stat; + var dir = S.in_directives, stat = simple_statement(); + return dir ? new AST_Directive(stat.body) : stat; case "num": case "regexp": case "operator": @@ -20307,6 +16518,7 @@ function parse($TEXT, options) { case "(": return simple_statement(); case ";": + S.in_directives = false; next(); return new AST_EmptyStatement(); default: @@ -20314,81 +16526,110 @@ function parse($TEXT, options) { } case "keyword": - switch (tmp = S.token.value, next(), tmp) { + switch (S.token.value) { case "break": + next(); return break_cont(AST_Break); case "continue": + next(); return break_cont(AST_Continue); case "debugger": + next(); semicolon(); return new AST_Debugger(); case "do": + next(); + var body = in_loop(statement); + expect_token("keyword", "while"); + var condition = parenthesised(); + semicolon(true); return new AST_Do({ - body : in_loop(statement), - condition : (expect_token("keyword", "while"), tmp = parenthesised(), semicolon(), tmp) + body : body, + condition : condition }); case "while": + next(); return new AST_While({ condition : parenthesised(), body : in_loop(statement) }); case "for": + next(); return for_(); case "function": + next(); return function_(AST_Defun); case "if": + next(); return if_(); case "return": if (S.in_function == 0 && !options.bare_returns) croak("'return' outside of function"); + next(); + var value = null; + if (is("punc", ";")) { + next(); + } else if (!can_insert_semicolon()) { + value = expression(true); + semicolon(); + } return new AST_Return({ - value: ( is("punc", ";") - ? (next(), null) - : can_insert_semicolon() - ? null - : (tmp = expression(true), semicolon(), tmp) ) + value: value }); case "switch": + next(); return new AST_Switch({ expression : parenthesised(), body : in_loop(switch_body_) }); case "throw": + next(); if (S.token.nlb) croak("Illegal newline after 'throw'"); + var value = expression(true); + semicolon(); return new AST_Throw({ - value: (tmp = expression(true), semicolon(), tmp) + value: value }); case "try": + next(); return try_(); case "var": - return tmp = var_(), semicolon(), tmp; + next(); + var node = var_(); + semicolon(); + return node; case "const": - return tmp = const_(), semicolon(), tmp; + next(); + var node = const_(); + semicolon(); + return node; case "with": + if (S.input.has_directive("use strict")) { + croak("Strict mode may not include a with statement"); + } + next(); return new AST_With({ expression : parenthesised(), body : statement() }); - - default: - unexpected(); } } + unexpected(); }); function labeled_statement() { @@ -20504,9 +16745,11 @@ function parse($TEXT, options) { body: (function(loop, labels){ ++S.in_function; S.in_directives = true; + S.input.push_directives_stack(); S.in_loop = 0; S.labels = []; var a = block_(); + S.input.pop_directives_stack(); --S.in_function; S.in_loop = loop; S.labels = labels; @@ -20691,6 +16934,13 @@ function parse($TEXT, options) { break; } break; + case "operator": + if (!is_identifier_string(tok.value)) { + croak("Invalid getter/setter name: " + tok.value, + tok.line, tok.col, tok.pos); + } + ret = _make_symbol(AST_SymbolRef); + break; } next(); return ret; @@ -20752,6 +17002,10 @@ function parse($TEXT, options) { }); }); + var create_accessor = embed_tokens(function() { + return function_(AST_Accessor); + }); + var object_ = embed_tokens(function() { expect("{"); var first = true, a = []; @@ -20764,11 +17018,16 @@ function parse($TEXT, options) { var type = start.type; var name = as_property_name(); if (type == "name" && !is("punc", ":")) { + var key = new AST_SymbolAccessor({ + start: S.token, + name: as_property_name(), + end: prev() + }); if (name == "get") { a.push(new AST_ObjectGetter({ start : start, - key : as_atom_node(), - value : function_(AST_Accessor), + key : key, + value : create_accessor(), end : prev() })); continue; @@ -20776,8 +17035,8 @@ function parse($TEXT, options) { if (name == "set") { a.push(new AST_ObjectSetter({ start : start, - key : as_atom_node(), - value : function_(AST_Accessor), + key : key, + value : create_accessor(), end : prev() })); continue; @@ -20798,14 +17057,15 @@ function parse($TEXT, options) { function as_property_name() { var tmp = S.token; - next(); switch (tmp.type) { + case "operator": + if (!KEYWORDS(tmp.value)) unexpected(); case "num": case "string": case "name": - case "operator": case "keyword": case "atom": + next(); return tmp.value; default: unexpected(); @@ -20814,16 +17074,9 @@ function parse($TEXT, options) { function as_name() { var tmp = S.token; + if (tmp.type != "name") unexpected(); next(); - switch (tmp.type) { - case "name": - case "operator": - case "keyword": - case "atom": - return tmp.value; - default: - unexpected(); - } + return tmp.value; }; function _make_symbol(type) { @@ -20884,14 +17137,14 @@ function parse($TEXT, options) { if (is("operator") && UNARY_PREFIX(start.value)) { next(); handle_regexp(); - var ex = make_unary(AST_UnaryPrefix, start.value, maybe_unary(allow_calls)); + var ex = make_unary(AST_UnaryPrefix, start, maybe_unary(allow_calls)); ex.start = start; ex.end = prev(); return ex; } var val = expr_atom(allow_calls); while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) { - val = make_unary(AST_UnaryPostfix, S.token.value, val); + val = make_unary(AST_UnaryPostfix, S.token, val); val.start = start; val.end = S.token; next(); @@ -20899,9 +17152,10 @@ function parse($TEXT, options) { return val; }; - function make_unary(ctor, op, expr) { + function make_unary(ctor, token, expr) { + var op = token.value; if ((op == "++" || op == "--") && !is_assignable(expr)) - croak("Invalid use of " + op + " operator"); + croak("Invalid use of " + op + " operator", token.line, token.col, token.pos); return new ctor({ operator: op, expression: expr }); }; @@ -20946,9 +17200,8 @@ function parse($TEXT, options) { }; function is_assignable(expr) { - if (!options.strict) return true; - if (expr instanceof AST_This) return false; - return (expr instanceof AST_PropAccess || expr instanceof AST_Symbol); + if (options.cli) return true; + return expr instanceof AST_PropAccess || expr instanceof AST_SymbolRef; }; var maybe_assign = function(no_in) { @@ -20999,8 +17252,10 @@ function parse($TEXT, options) { return (function(){ var start = S.token; var body = []; + S.input.push_directives_stack(); while (!is("eof")) body.push(statement()); + S.input.pop_directives_stack(); var end = prev(); var toplevel = options.toplevel; if (toplevel) { @@ -21080,7 +17335,7 @@ TreeTransformer.prototype = new TreeWalker; x = this; descend(x, tw); } else { - tw.stack[tw.stack.length - 1] = x = this.clone(); + tw.stack[tw.stack.length - 1] = x = this; descend(x, tw); y = tw.after(x, in_list); if (y !== undefined) x = y; @@ -21286,10 +17541,12 @@ function SymbolDef(scope, index, orig) { this.global = false; this.mangled_name = null; this.undeclared = false; - this.constant = false; this.index = index; + this.id = SymbolDef.next_id++; }; +SymbolDef.next_id = 1; + SymbolDef.prototype = { unmangleable: function(options) { if (!options) options = {}; @@ -21308,9 +17565,14 @@ SymbolDef.prototype = { } else if (!this.mangled_name && !this.unmangleable(options)) { var s = this.scope; - if (!options.screw_ie8 && this.orig[0] instanceof AST_SymbolLambda) + var sym = this.orig[0]; + if (!options.screw_ie8 && sym instanceof AST_SymbolLambda) s = s.parent_scope; - this.mangled_name = s.next_mangled(options, this); + var def; + if (this.defun && (def = this.defun.variables.get(this.name))) { + this.mangled_name = def.mangled_name || def.name; + } else + this.mangled_name = s.next_mangled(options, this); if (this.global && cache) { cache.set(this.name, this.mangled_name); } @@ -21320,8 +17582,8 @@ SymbolDef.prototype = { AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){ options = defaults(options, { - screw_ie8: false, - cache: null + cache: null, + screw_ie8: true, }); // pass 1: setup scope chaining and handle definitions @@ -21329,25 +17591,23 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){ var scope = self.parent_scope = null; var labels = new Dictionary(); var defun = null; - var nesting = 0; var tw = new TreeWalker(function(node, descend){ - if (options.screw_ie8 && node instanceof AST_Catch) { + if (node instanceof AST_Catch) { var save_scope = scope; scope = new AST_Scope(node); - scope.init_scope_vars(nesting); - scope.parent_scope = save_scope; + scope.init_scope_vars(save_scope); descend(); scope = save_scope; return true; } if (node instanceof AST_Scope) { - node.init_scope_vars(nesting); - var save_scope = node.parent_scope = scope; + node.init_scope_vars(scope); + var save_scope = scope; var save_defun = defun; var save_labels = labels; defun = scope = node; labels = new Dictionary(); - ++nesting; descend(); --nesting; + descend(); scope = save_scope; defun = save_defun; labels = save_labels; @@ -21387,14 +17647,19 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){ (node.scope = defun.parent_scope).def_function(node); } else if (node instanceof AST_SymbolVar - || node instanceof AST_SymbolConst) { - var def = defun.def_variable(node); - def.constant = node instanceof AST_SymbolConst; - def.init = tw.parent().value; + || node instanceof AST_SymbolConst) { + defun.def_variable(node); + if (defun !== scope) { + node.mark_enclosed(options); + var def = scope.find_variable(node); + if (node.thedef !== def) { + node.thedef = def; + node.reference(options); + } + } } else if (node instanceof AST_SymbolCatch) { - (options.screw_ie8 ? scope : defun) - .def_variable(node); + scope.def_variable(node).defun = defun; } else if (node instanceof AST_LabelRef) { var sym = labels.get(node.name); @@ -21425,65 +17690,99 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){ } if (node instanceof AST_SymbolRef) { var name = node.name; + if (name == "eval" && tw.parent() instanceof AST_Call) { + for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) { + s.uses_eval = true; + } + } var sym = node.scope.find_variable(name); + if (node.scope instanceof AST_Lambda && name == "arguments") { + node.scope.uses_arguments = true; + } if (!sym) { - var g; - if (globals.has(name)) { - g = globals.get(name); - } else { - g = new SymbolDef(self, globals.size(), node); - g.undeclared = true; - g.global = true; - globals.set(name, g); - } - node.thedef = g; - if (name == "eval" && tw.parent() instanceof AST_Call) { - for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) - s.uses_eval = true; - } - if (func && name == "arguments") { - func.uses_arguments = true; - } - } else { - node.thedef = sym; + sym = self.def_global(node); } - node.reference(); + node.thedef = sym; + node.reference(options); return true; } }); self.walk(tw); + // pass 3: fix up any scoping issue with IE8 + if (!options.screw_ie8) { + self.walk(new TreeWalker(function(node, descend) { + if (node instanceof AST_SymbolCatch) { + var name = node.name; + var refs = node.thedef.references; + var scope = node.thedef.defun; + var def = scope.find_variable(name) || self.globals.get(name) || scope.def_variable(node); + refs.forEach(function(ref) { + ref.thedef = def; + ref.reference(options); + }); + node.thedef = def; + return true; + } + })); + } + if (options.cache) { this.cname = options.cache.cname; } }); -AST_Scope.DEFMETHOD("init_scope_vars", function(nesting){ - this.variables = new Dictionary(); // map name to AST_SymbolVar (variables defined in this scope; includes functions) - this.functions = new Dictionary(); // map name to AST_SymbolDefun (functions defined in this scope) - this.uses_with = false; // will be set to true if this or some nested scope uses the `with` statement - this.uses_eval = false; // will be set to true if this or nested scope uses the global `eval` - this.parent_scope = null; // the parent scope - this.enclosed = []; // a list of variables from this or outer scope(s) that are referenced from this or inner scopes - this.cname = -1; // the current index for mangling functions/variables - this.nesting = nesting; // the nesting level of this scope (0 means toplevel) +AST_Toplevel.DEFMETHOD("def_global", function(node){ + var globals = this.globals, name = node.name; + if (globals.has(name)) { + return globals.get(name); + } else { + var g = new SymbolDef(this, globals.size(), node); + g.undeclared = true; + g.global = true; + globals.set(name, g); + return g; + } +}); + +AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){ + this.variables = new Dictionary(); // map name to AST_SymbolVar (variables defined in this scope; includes functions) + this.functions = new Dictionary(); // map name to AST_SymbolDefun (functions defined in this scope) + this.uses_with = false; // will be set to true if this or some nested scope uses the `with` statement + this.uses_eval = false; // will be set to true if this or nested scope uses the global `eval` + this.parent_scope = parent_scope; // the parent scope + this.enclosed = []; // a list of variables from this or outer scope(s) that are referenced from this or inner scopes + this.cname = -1; // the current index for mangling functions/variables }); AST_Lambda.DEFMETHOD("init_scope_vars", function(){ AST_Scope.prototype.init_scope_vars.apply(this, arguments); this.uses_arguments = false; + this.def_variable(new AST_SymbolVar({ + name: "arguments", + start: this.start, + end: this.end + })); }); -AST_SymbolRef.DEFMETHOD("reference", function() { +AST_Symbol.DEFMETHOD("mark_enclosed", function(options) { var def = this.definition(); - def.references.push(this); var s = this.scope; while (s) { push_uniq(s.enclosed, def); + if (options.keep_fnames) { + s.functions.each(function(d) { + push_uniq(def.scope.enclosed, d); + }); + } if (s === def.scope) break; s = s.parent_scope; } - this.frame = this.scope.nesting - def.scope.nesting; +}); + +AST_Symbol.DEFMETHOD("reference", function(options) { + this.definition().references.push(this); + this.mark_enclosed(options); }); AST_Scope.DEFMETHOD("find_variable", function(name){ @@ -21537,27 +17836,21 @@ AST_Function.DEFMETHOD("next_mangled", function(options, def){ // a function expression's argument cannot shadow the function expression's name var tricky_def = def.orig[0] instanceof AST_SymbolFunarg && this.name && this.name.definition(); + + // the function's mangled_name is null when keep_fnames is true + var tricky_name = tricky_def ? tricky_def.mangled_name || tricky_def.name : null; + while (true) { var name = AST_Lambda.prototype.next_mangled.call(this, options, def); - if (!(tricky_def && tricky_def.mangled_name == name)) + if (!tricky_name || tricky_name != name) return name; } }); -AST_Scope.DEFMETHOD("references", function(sym){ - if (sym instanceof AST_Symbol) sym = sym.definition(); - return this.enclosed.indexOf(sym) < 0 ? null : sym; -}); - AST_Symbol.DEFMETHOD("unmangleable", function(options){ return this.definition().unmangleable(options); }); -// property accessors are not mangleable -AST_SymbolAccessor.DEFMETHOD("unmangleable", function(){ - return true; -}); - // labels are always mangleable AST_Label.DEFMETHOD("unmangleable", function(){ return false; @@ -21590,17 +17883,21 @@ AST_Symbol.DEFMETHOD("global", function(){ AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){ return defaults(options, { - except : [], eval : false, - sort : false, + except : [], + keep_fnames : false, + screw_ie8 : true, + sort : false, // Ignored. Flag retained for backwards compatibility. toplevel : false, - screw_ie8 : false, - keep_fnames : false }); }); AST_Toplevel.DEFMETHOD("mangle_names", function(options){ options = this._default_mangler_options(options); + + // Never mangle arguments + options.except.push('arguments'); + // We only need to mangle declaration nodes. Special logic wired // into the code generator will display the mangled name if it's // present (and for AST_SymbolRef-s it'll use the mangled name of @@ -21631,9 +17928,6 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){ a.push(symbol); } }); - if (options.sort) a.sort(function(a, b){ - return b.references.length - a.references.length; - }); to_mangle.push.apply(to_mangle, a); return; } @@ -21767,12 +18061,12 @@ var base54 = (function() { AST_Toplevel.DEFMETHOD("scope_warnings", function(options){ options = defaults(options, { - undeclared : false, // this makes a lot of noise - unreferenced : true, assign_to_global : true, + eval : true, func_arguments : true, nested_defuns : true, - eval : true + undeclared : false, // this makes a lot of noise + unreferenced : true, }); var tw = new TreeWalker(function(node){ if (options.undeclared @@ -21896,30 +18190,67 @@ AST_Toplevel.DEFMETHOD("scope_warnings", function(options){ "use strict"; +var EXPECT_DIRECTIVE = /^$|[;{][\s\n]*$/; + +function is_some_comments(comment) { + // multiline comment + return comment.type == "comment2" && /@preserve|@license|@cc_on/i.test(comment.value); +} + function OutputStream(options) { options = defaults(options, { - indent_start : 0, - indent_level : 4, - quote_keys : false, - space_colon : true, ascii_only : false, - unescape_regexps : false, - inline_script : false, - width : 80, - max_line_len : 32000, beautify : false, - source_map : null, bracketize : false, - semicolons : true, comments : false, - shebang : true, - preserve_line : false, - screw_ie8 : false, + indent_level : 4, + indent_start : 0, + inline_script : true, + keep_quoted_props: false, + max_line_len : false, preamble : null, - quote_style : 0 + preserve_line : false, + quote_keys : false, + quote_style : 0, + screw_ie8 : true, + semicolons : true, + shebang : true, + source_map : null, + space_colon : true, + unescape_regexps : false, + width : 80, + wrap_iife : false, }, true); + // Convert comment option to RegExp if neccessary and set up comments filter + var comment_filter = return_false; // Default case, throw all comments away + if (options.comments) { + var comments = options.comments; + if (typeof options.comments === "string" && /^\/.*\/[a-zA-Z]*$/.test(options.comments)) { + var regex_pos = options.comments.lastIndexOf("/"); + comments = new RegExp( + options.comments.substr(1, regex_pos - 1), + options.comments.substr(regex_pos + 1) + ); + } + if (comments instanceof RegExp) { + comment_filter = function(comment) { + return comment.type != "comment5" && comments.test(comment.value); + }; + } + else if (typeof comments === "function") { + comment_filter = function(comment) { + return comment.type != "comment5" && comments(this, comment); + }; + } + else if (comments === "some") { + comment_filter = is_some_comments; + } else { // NOTE includes "all" option + comment_filter = return_true; + } + } + var indentation = 0; var current_col = 0; var current_line = 1; @@ -21927,7 +18258,7 @@ function OutputStream(options) { var OUTPUT = ""; function to_ascii(str, identifier) { - return str.replace(/[\u0080-\uffff]/g, function(ch) { + return str.replace(/[\u0000-\u001f\u007f-\uffff]/g, function(ch) { var code = ch.charCodeAt(0).toString(16); if (code.length <= 2 && !identifier) { while (code.length < 2) code = "0" + code; @@ -21941,20 +18272,23 @@ function OutputStream(options) { function make_string(str, quote) { var dq = 0, sq = 0; - str = str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g, function(s){ + str = str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g, + function(s, i){ switch (s) { + case '"': ++dq; return '"'; + case "'": ++sq; return "'"; case "\\": return "\\\\"; - case "\b": return "\\b"; - case "\f": return "\\f"; case "\n": return "\\n"; case "\r": return "\\r"; + case "\t": return "\\t"; + case "\b": return "\\b"; + case "\f": return "\\f"; case "\x0B": return options.screw_ie8 ? "\\v" : "\\x0B"; case "\u2028": return "\\u2028"; case "\u2029": return "\\u2029"; - case '"': ++dq; return '"'; - case "'": ++sq; return "'"; - case "\0": return "\\x00"; case "\ufeff": return "\\ufeff"; + case "\0": + return /[0-7]/.test(str.charAt(i+1)) ? "\\x00" : "\\0"; } return s; }); @@ -22002,31 +18336,42 @@ function OutputStream(options) { var might_need_space = false; var might_need_semicolon = false; - var last = null; - - function last_char() { - return last.charAt(last.length - 1); - }; - - function maybe_newline() { - if (options.max_line_len && current_col > options.max_line_len) - print("\n"); - }; + var might_add_newline = 0; + var last = ""; + + var ensure_line_len = options.max_line_len ? function() { + if (current_col > options.max_line_len) { + if (might_add_newline) { + var left = OUTPUT.slice(0, might_add_newline); + var right = OUTPUT.slice(might_add_newline); + OUTPUT = left + "\n" + right; + current_line++; + current_pos++; + current_col = right.length; + } + if (current_col > options.max_line_len) { + AST_Node.warn("Output exceeds {max_line_len} characters", options); + } + } + might_add_newline = 0; + } : noop; var requireSemicolonChars = makePredicate("( [ + * / - , ."); function print(str) { str = String(str); var ch = str.charAt(0); + var prev = last.charAt(last.length - 1); if (might_need_semicolon) { might_need_semicolon = false; - if ((!ch || ";}".indexOf(ch) < 0) && !/[;]$/.test(last)) { + if (prev == ":" && ch == "}" || (!ch || ";}".indexOf(ch) < 0) && prev != ";") { if (options.semicolons || requireSemicolonChars(ch)) { OUTPUT += ";"; current_col++; current_pos++; } else { + ensure_line_len(); OUTPUT += "\n"; current_pos++; current_line++; @@ -22047,6 +18392,7 @@ function OutputStream(options) { if (!options.beautify && options.preserve_line && stack[stack.length - 1]) { var target_line = stack[stack.length - 1].start.line; while (current_line < target_line) { + ensure_line_len(); OUTPUT += "\n"; current_pos++; current_line++; @@ -22056,10 +18402,10 @@ function OutputStream(options) { } if (might_need_space) { - var prev = last_char(); if ((is_identifier_char(prev) - && (is_identifier_char(ch) || ch == "\\")) - || (/^[\+\-\/]$/.test(ch) && ch == prev)) + && (is_identifier_char(ch) || ch == "\\")) + || (ch == "/" && ch == prev) + || ((ch == "+" || ch == "-") && ch == last)) { OUTPUT += " "; current_col++; @@ -22067,16 +18413,16 @@ function OutputStream(options) { } might_need_space = false; } + OUTPUT += str; + current_pos += str.length; var a = str.split(/\r?\n/), n = a.length - 1; current_line += n; - if (n == 0) { - current_col += a[n].length; - } else { + current_col += a[0].length; + if (n > 0) { + ensure_line_len(); current_col = a[n].length; } - current_pos += str.length; last = str; - OUTPUT += str; }; var space = options.beautify ? function() { @@ -22102,7 +18448,10 @@ function OutputStream(options) { var newline = options.beautify ? function() { print("\n"); - } : maybe_newline; + } : options.max_line_len ? function() { + ensure_line_len(); + might_add_newline = OUTPUT.length; + } : noop; var semicolon = options.beautify ? function() { print(";"); @@ -22179,13 +18528,12 @@ function OutputStream(options) { } : noop; function get() { + if (might_add_newline) { + ensure_line_len(); + } return OUTPUT; }; - if (options.preamble) { - print(options.preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g, "\n")); - } - var stack = []; return { get : get, @@ -22204,7 +18552,18 @@ function OutputStream(options) { force_semicolon : force_semicolon, to_ascii : to_ascii, print_name : function(name) { print(make_name(name)) }, - print_string : function(str, quote) { print(encode_string(str, quote)) }, + print_string : function(str, quote, escape_directive) { + var encoded = encode_string(str, quote); + if (escape_directive === true && encoded.indexOf("\\") === -1) { + // Insert semicolons to break directive prologue + if (!EXPECT_DIRECTIVE.test(OUTPUT)) { + force_semicolon(); + } + force_semicolon(); + } + print(encoded); + }, + encode_string : encode_string, next_indent : next_indent, with_indent : with_indent, with_block : with_block, @@ -22212,12 +18571,12 @@ function OutputStream(options) { with_square : with_square, add_mapping : add_mapping, option : function(opt) { return options[opt] }, + comment_filter : comment_filter, line : function() { return current_line }, col : function() { return current_col }, pos : function() { return current_pos }, push_node : function(node) { stack.push(node) }, pop_node : function() { return stack.pop() }, - stack : function() { return stack }, parent : function(n) { return stack[stack.length - 2 - (n || 0)]; } @@ -22236,10 +18595,11 @@ function OutputStream(options) { }; var use_asm = false; + var in_directive = false; AST_Node.DEFMETHOD("print", function(stream, force_parens){ var self = this, generator = self._codegen, prev_use_asm = use_asm; - if (self instanceof AST_Directive && self.value == "use asm") { + if (self instanceof AST_Directive && self.value == "use asm" && stream.parent() instanceof AST_Scope) { use_asm = true; } function doit() { @@ -22254,13 +18614,14 @@ function OutputStream(options) { doit(); } stream.pop_node(); - if (self instanceof AST_Lambda) { + if (self instanceof AST_Scope) { use_asm = prev_use_asm; } }); AST_Node.DEFMETHOD("print_to_string", function(options){ var s = OutputStream(options); + if (!options) s._readonly = true; this.print(s); return s.get(); }); @@ -22268,7 +18629,8 @@ function OutputStream(options) { /* -----[ comments ]----- */ AST_Node.DEFMETHOD("add_comments", function(output){ - var c = output.option("comments"), self = this; + if (output._readonly) return; + var self = this; var start = self.start; if (start && !start._comments_dumped) { start._comments_dumped = true; @@ -22291,20 +18653,19 @@ function OutputStream(options) { })); } - if (!c) { - comments = comments.filter(function(comment) { - return comment.type == "comment5"; - }); - } else if (c.test) { - comments = comments.filter(function(comment){ - return c.test(comment.value) || comment.type == "comment5"; - }); - } else if (typeof c == "function") { - comments = comments.filter(function(comment){ - return c(self, comment) || comment.type == "comment5"; - }); + if (output.pos() == 0) { + if (comments.length > 0 && output.option("shebang") && comments[0].type == "comment5") { + output.print("#!" + comments.shift().value + "\n"); + output.indent(); + } + var preamble = output.option("preamble"); + if (preamble) { + output.print(preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g, "\n")); + } } + comments = comments.filter(output.comment_filter, self); + // Keep single line comments after nlb, after nlb if (!output.option("beautify") && comments.length > 0 && /comment[134]/.test(comments[0].type) && @@ -22327,10 +18688,6 @@ function OutputStream(options) { output.space(); } } - else if (output.pos() === 0 && c.type == "comment5" && output.option("shebang")) { - output.print("#!" + c.value + "\n"); - output.indent(); - } }); } }); @@ -22354,7 +18711,16 @@ function OutputStream(options) { // a function expression needs parens around it when it's provably // the first token to appear in a statement. PARENS(AST_Function, function(output){ - return first_in_statement(output); + if (first_in_statement(output)) { + return true; + } + + if (output.option('wrap_iife')) { + var p = output.parent(); + return p instanceof AST_Call && p.expression === this; + } + + return false; }); // same goes for an object literal, because otherwise it would be @@ -22363,9 +18729,10 @@ function OutputStream(options) { return first_in_statement(output); }); - PARENS([ AST_Unary, AST_Undefined ], function(output){ + PARENS(AST_Unary, function(output){ var p = output.parent(); - return p instanceof AST_PropAccess && p.expression === this; + return p instanceof AST_PropAccess && p.expression === this + || p instanceof AST_Call && p.expression === this; }); PARENS(AST_Seq, function(output){ @@ -22441,7 +18808,7 @@ function OutputStream(options) { PARENS(AST_New, function(output){ var p = output.parent(); - if (no_constructor_parens(this, output) + if (!need_constructor_parens(this, output) && (p instanceof AST_PropAccess // (new Date).getTime(), (new Date)["getTime"]() || p instanceof AST_Call && p.expression === this)) // (new foo)(bar) return true; @@ -22449,8 +18816,12 @@ function OutputStream(options) { PARENS(AST_Number, function(output){ var p = output.parent(); - if (this.getValue() < 0 && p instanceof AST_PropAccess && p.expression === this) - return true; + if (p instanceof AST_PropAccess && p.expression === this) { + var value = this.getValue(); + if (value < 0 || /^0/.test(make_num(value))) { + return true; + } + } }); PARENS([ AST_Assign, AST_Conditional ], function (output){ @@ -22485,9 +18856,16 @@ function OutputStream(options) { /* -----[ statements ]----- */ - function display_body(body, is_toplevel, output) { + function display_body(body, is_toplevel, output, allow_directives) { var last = body.length - 1; + in_directive = allow_directives; body.forEach(function(stmt, i){ + if (in_directive === true && !(stmt instanceof AST_Directive || + stmt instanceof AST_EmptyStatement || + (stmt instanceof AST_SimpleStatement && stmt.body instanceof AST_String) + )) { + in_directive = false; + } if (!(stmt instanceof AST_EmptyStatement)) { output.indent(); stmt.print(output); @@ -22496,7 +18874,14 @@ function OutputStream(options) { if (is_toplevel) output.newline(); } } + if (in_directive === true && + stmt instanceof AST_SimpleStatement && + stmt.body instanceof AST_String + ) { + in_directive = false; + } }); + in_directive = false; }; AST_StatementWithBody.DEFMETHOD("_do_print_body", function(output){ @@ -22508,7 +18893,7 @@ function OutputStream(options) { output.semicolon(); }); DEFPRINT(AST_Toplevel, function(self, output){ - display_body(self.body, true, output); + display_body(self.body, true, output, true); output.print(""); }); DEFPRINT(AST_LabeledStatement, function(self, output){ @@ -22520,9 +18905,9 @@ function OutputStream(options) { self.body.print(output); output.semicolon(); }); - function print_bracketed(body, output) { + function print_bracketed(body, output, allow_directives) { if (body.length > 0) output.with_block(function(){ - display_body(body, false, output); + display_body(body, false, output, allow_directives); }); else output.print("{}"); }; @@ -22535,7 +18920,7 @@ function OutputStream(options) { DEFPRINT(AST_Do, function(self, output){ output.print("do"); output.space(); - self._do_print_body(output); + make_block(self.body, output); output.space(); output.print("while"); output.space(); @@ -22557,7 +18942,7 @@ function OutputStream(options) { output.print("for"); output.space(); output.with_parens(function(){ - if (self.init && !(self.init instanceof AST_EmptyStatement)) { + if (self.init) { if (self.init instanceof AST_Definitions) { self.init.print(output); } else { @@ -22622,7 +19007,7 @@ function OutputStream(options) { }); }); output.space(); - print_bracketed(self.body, output); + print_bracketed(self.body, output, true); }); DEFPRINT(AST_Lambda, function(self, output){ self._do_print(output); @@ -22662,10 +19047,10 @@ function OutputStream(options) { /* -----[ if ]----- */ function make_then(self, output) { - if (output.option("bracketize")) { - make_block(self.body, output); - return; - } + var b = self.body; + if (output.option("bracketize") + || !output.option("screw_ie8") && b instanceof AST_Do) + return make_block(b, output); // The squeezer replaces "block"-s that contain only a single // statement with the statement itself; technically, the AST // is correct, but this can create problems when we output an @@ -22673,18 +19058,7 @@ function OutputStream(options) { // IF *without* an ELSE block (then the outer ELSE would refer // to the inner IF). This function checks for this case and // adds the block brackets if needed. - if (!self.body) - return output.force_semicolon(); - if (self.body instanceof AST_Do - && !output.option("screw_ie8")) { - // https://github.com/mishoo/UglifyJS/issues/#issue/57 IE - // croaks with "syntax error" on code like this: if (foo) - // do ... while(cond); else ... we need block brackets - // around do/while - make_block(self.body, output); - return; - } - var b = self.body; + if (!b) return output.force_semicolon(); while (true) { if (b instanceof AST_If) { if (!b.alternative) { @@ -22712,7 +19086,10 @@ function OutputStream(options) { output.space(); output.print("else"); output.space(); - force_statement(self.alternative, output); + if (self.alternative instanceof AST_If) + self.alternative.print(output); + else + force_statement(self.alternative, output); } else { self._do_print_body(output); } @@ -22726,24 +19103,24 @@ function OutputStream(options) { self.expression.print(output); }); output.space(); - if (self.body.length > 0) output.with_block(function(){ - self.body.forEach(function(stmt, i){ - if (i) output.newline(); + var last = self.body.length - 1; + if (last < 0) output.print("{}"); + else output.with_block(function(){ + self.body.forEach(function(branch, i){ output.indent(true); - stmt.print(output); + branch.print(output); + if (i < last && branch.body.length > 0) + output.newline(); }); }); - else output.print("{}"); }); AST_SwitchBranch.DEFMETHOD("_do_print_body", function(output){ - if (this.body.length > 0) { + output.newline(); + this.body.forEach(function(stmt){ + output.indent(); + stmt.print(output); output.newline(); - this.body.forEach(function(stmt){ - output.indent(); - stmt.print(output); - output.newline(); - }); - } + }); }); DEFPRINT(AST_Default, function(self, output){ output.print("default:"); @@ -22838,7 +19215,7 @@ function OutputStream(options) { /* -----[ other expressions ]----- */ DEFPRINT(AST_Call, function(self, output){ self.expression.print(output); - if (self instanceof AST_New && no_constructor_parens(self, output)) + if (self instanceof AST_New && !need_constructor_parens(self, output)) return; output.with_parens(function(){ self.args.forEach(function(expr, i){ @@ -22879,7 +19256,7 @@ function OutputStream(options) { var expr = self.expression; expr.print(output); if (expr instanceof AST_Number && expr.getValue() >= 0) { - if (!/[xa-f.]/i.test(output.last())) { + if (!/[xa-f.)]/i.test(output.last())) { output.print("."); } } @@ -22977,9 +19354,8 @@ function OutputStream(options) { }); else output.print("{}"); }); - DEFPRINT(AST_ObjectKeyVal, function(self, output){ - var key = self.key; - var quote = self.quote; + + function print_property_name(key, quote, output) { if (output.option("quote_keys")) { output.print_string(key + ""); } else if ((typeof key == "number" @@ -22988,39 +19364,38 @@ function OutputStream(options) { && parseFloat(key) >= 0) { output.print(make_num(key)); } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) { - output.print_name(key); + if (quote && output.option("keep_quoted_props")) { + output.print_string(key, quote); + } else { + output.print_name(key); + } } else { output.print_string(key, quote); } + } + + DEFPRINT(AST_ObjectKeyVal, function(self, output){ + print_property_name(self.key, self.quote, output); output.colon(); self.value.print(output); }); - DEFPRINT(AST_ObjectSetter, function(self, output){ - output.print("set"); + AST_ObjectProperty.DEFMETHOD("_print_getter_setter", function(type, output) { + output.print(type); output.space(); - self.key.print(output); - self.value._do_print(output, true); + print_property_name(this.key.name, this.quote, output); + this.value._do_print(output, true); + }); + DEFPRINT(AST_ObjectSetter, function(self, output){ + self._print_getter_setter("set", output); }); DEFPRINT(AST_ObjectGetter, function(self, output){ - output.print("get"); - output.space(); - self.key.print(output); - self.value._do_print(output, true); + self._print_getter_setter("get", output); }); DEFPRINT(AST_Symbol, function(self, output){ var def = self.definition(); output.print_name(def ? def.mangled_name || def.name : self.name); }); - DEFPRINT(AST_Undefined, function(self, output){ - output.print("void 0"); - }); DEFPRINT(AST_Hole, noop); - DEFPRINT(AST_Infinity, function(self, output){ - output.print("Infinity"); - }); - DEFPRINT(AST_NaN, function(self, output){ - output.print("NaN"); - }); DEFPRINT(AST_This, function(self, output){ output.print("this"); }); @@ -23028,10 +19403,10 @@ function OutputStream(options) { output.print(self.getValue()); }); DEFPRINT(AST_String, function(self, output){ - output.print_string(self.getValue(), self.quote); + output.print_string(self.getValue(), self.quote, in_directive); }); DEFPRINT(AST_Number, function(self, output){ - if (use_asm && self.start.raw != null) { + if (use_asm && self.start && self.start.raw != null) { output.print(self.start.raw); } else { output.print(make_num(self.getValue())); @@ -23086,15 +19461,7 @@ function OutputStream(options) { function force_statement(stat, output) { if (output.option("bracketize")) { - if (!stat || stat instanceof AST_EmptyStatement) - output.print("{}"); - else if (stat instanceof AST_BlockStatement) - stat.print(output); - else output.with_block(function(){ - output.indent(); - stat.print(output); - output.newline(); - }); + make_block(stat, output); } else { if (!stat || stat instanceof AST_EmptyStatement) output.force_semicolon(); @@ -23103,33 +19470,12 @@ function OutputStream(options) { } }; - // return true if the node at the top of the stack (that means the - // innermost node in the current output) is lexically the first in - // a statement. - function first_in_statement(output) { - var a = output.stack(), i = a.length, node = a[--i], p = a[--i]; - while (i > 0) { - if (p instanceof AST_Statement && p.body === node) - return true; - if ((p instanceof AST_Seq && p.car === node ) || - (p instanceof AST_Call && p.expression === node && !(p instanceof AST_New) ) || - (p instanceof AST_Dot && p.expression === node ) || - (p instanceof AST_Sub && p.expression === node ) || - (p instanceof AST_Conditional && p.condition === node ) || - (p instanceof AST_Binary && p.left === node ) || - (p instanceof AST_UnaryPostfix && p.expression === node )) - { - node = p; - p = a[--i]; - } else { - return false; - } - } - }; - // self should be AST_New. decide if we want to show parens or not. - function no_constructor_parens(self, output) { - return self.args.length == 0 && !output.option("beautify"); + function need_constructor_parens(self, output) { + // Always print parentheses with arguments + if (self.args.length > 0) return true; + + return output.option("beautify"); }; function best_of(a) { @@ -23164,11 +19510,11 @@ function OutputStream(options) { }; function make_block(stmt, output) { - if (stmt instanceof AST_BlockStatement) { + if (!stmt || stmt instanceof AST_EmptyStatement) + output.print("{}"); + else if (stmt instanceof AST_BlockStatement) stmt.print(output); - return; - } - output.with_block(function(){ + else output.with_block(function(){ output.indent(); stmt.print(output); output.newline(); @@ -23273,44 +19619,109 @@ function Compressor(options, false_by_default) { return new Compressor(options, false_by_default); TreeTransformer.call(this, this.before, this.after); this.options = defaults(options, { - sequences : !false_by_default, - properties : !false_by_default, + angular : false, + booleans : !false_by_default, + cascade : !false_by_default, + collapse_vars : !false_by_default, + comparisons : !false_by_default, + conditionals : !false_by_default, dead_code : !false_by_default, + drop_console : false, drop_debugger : !false_by_default, - unsafe : false, - unsafe_comps : false, - conditionals : !false_by_default, - comparisons : !false_by_default, evaluate : !false_by_default, - booleans : !false_by_default, - loops : !false_by_default, - unused : !false_by_default, + expression : false, + global_defs : {}, hoist_funs : !false_by_default, - keep_fargs : true, - keep_fnames : false, hoist_vars : false, if_return : !false_by_default, join_vars : !false_by_default, - cascade : !false_by_default, - side_effects : !false_by_default, - pure_getters : false, - pure_funcs : null, + keep_fargs : true, + keep_fnames : false, + keep_infinity : false, + loops : !false_by_default, negate_iife : !false_by_default, - screw_ie8 : false, - drop_console : false, - angular : false, - + passes : 1, + properties : !false_by_default, + pure_getters : !false_by_default && "strict", + pure_funcs : null, + reduce_vars : !false_by_default, + screw_ie8 : true, + sequences : !false_by_default, + side_effects : !false_by_default, + switches : !false_by_default, + top_retain : null, + toplevel : !!(options && options["top_retain"]), + unsafe : false, + unsafe_comps : false, + unsafe_math : false, + unsafe_proto : false, + unsafe_regexp : false, + unused : !false_by_default, warnings : true, - global_defs : {} }, true); + var pure_funcs = this.options["pure_funcs"]; + if (typeof pure_funcs == "function") { + this.pure_funcs = pure_funcs; + } else { + this.pure_funcs = pure_funcs ? function(node) { + return pure_funcs.indexOf(node.expression.print_to_string()) < 0; + } : return_true; + } + var top_retain = this.options["top_retain"]; + if (top_retain instanceof RegExp) { + this.top_retain = function(def) { + return top_retain.test(def.name); + }; + } else if (typeof top_retain == "function") { + this.top_retain = top_retain; + } else if (top_retain) { + if (typeof top_retain == "string") { + top_retain = top_retain.split(/,/); + } + this.top_retain = function(def) { + return top_retain.indexOf(def.name) >= 0; + }; + } + var sequences = this.options["sequences"]; + this.sequences_limit = sequences == 1 ? 200 : sequences | 0; + this.warnings_produced = {}; }; Compressor.prototype = new TreeTransformer; merge(Compressor.prototype, { option: function(key) { return this.options[key] }, - warn: function() { - if (this.options.warnings) + compress: function(node) { + if (this.option("expression")) { + node = node.process_expression(true); + } + var passes = +this.options.passes || 1; + for (var pass = 0; pass < passes && pass < 3; ++pass) { + if (pass > 0 || this.option("reduce_vars")) + node.reset_opt_flags(this, true); + node = node.transform(this); + } + if (this.option("expression")) { + node = node.process_expression(false); + } + return node; + }, + info: function() { + if (this.options.warnings == "verbose") { AST_Node.warn.apply(AST_Node, arguments); + } + }, + warn: function(text, props) { + if (this.options.warnings) { + // only emit unique warnings + var message = string_template(text, props); + if (!(message in this.warnings_produced)) { + this.warnings_produced[message] = true; + AST_Node.warn.apply(AST_Node, arguments); + } + } + }, + clear_warnings: function() { + this.warnings_produced = {}; }, before: function(node, descend, in_list) { if (node._squeezed) return node; @@ -23319,14 +19730,25 @@ merge(Compressor.prototype, { node = node.hoist_declarations(this); was_scope = true; } + // Before https://github.com/mishoo/UglifyJS2/pull/1602 AST_Node.optimize() + // would call AST_Node.transform() if a different instance of AST_Node is + // produced after OPT(). + // This corrupts TreeWalker.stack, which cause AST look-ups to malfunction. + // Migrate and defer all children's AST_Node.transform() to below, which + // will now happen after this parent AST_Node has been properly substituted + // thus gives a consistent AST snapshot. descend(node, this); - node = node.optimize(this); - if (was_scope && node instanceof AST_Scope) { - node.drop_unused(this); - descend(node, this); + // Existing code relies on how AST_Node.optimize() worked, and omitting the + // following replacement call would result in degraded efficiency of both + // output and performance. + descend(node, this); + var opt = node.optimize(this); + if (was_scope && opt instanceof AST_Scope) { + opt.drop_unused(this); + descend(opt, this); } - node._squeezed = true; - return node; + if (opt === node) opt._squeezed = true; + return opt; } }); @@ -23339,8 +19761,7 @@ merge(Compressor.prototype, { if (compressor.has_directive("use asm")) return self; var opt = optimizer(self, compressor); opt._optimized = true; - if (opt === self) return opt; - return opt.transform(compressor); + return opt; }); }; @@ -23349,10 +19770,304 @@ merge(Compressor.prototype, { }); AST_Node.DEFMETHOD("equivalent_to", function(node){ - // XXX: this is a rather expensive way to test two node's equivalence: - return this.print_to_string() == node.print_to_string(); + return this.TYPE == node.TYPE && this.print_to_string() == node.print_to_string(); + }); + + AST_Node.DEFMETHOD("process_expression", function(insert, compressor) { + var self = this; + var tt = new TreeTransformer(function(node) { + if (insert && node instanceof AST_SimpleStatement) { + return make_node(AST_Return, node, { + value: node.body + }); + } + if (!insert && node instanceof AST_Return) { + if (compressor) { + var value = node.value && node.value.drop_side_effect_free(compressor, true); + return value ? make_node(AST_SimpleStatement, node, { + body: value + }) : make_node(AST_EmptyStatement, node); + } + return make_node(AST_SimpleStatement, node, { + body: node.value || make_node(AST_UnaryPrefix, node, { + operator: "void", + expression: make_node(AST_Number, node, { + value: 0 + }) + }) + }); + } + if (node instanceof AST_Lambda && node !== self) { + return node; + } + if (node instanceof AST_Block) { + var index = node.body.length - 1; + if (index >= 0) { + node.body[index] = node.body[index].transform(tt); + } + } + if (node instanceof AST_If) { + node.body = node.body.transform(tt); + if (node.alternative) { + node.alternative = node.alternative.transform(tt); + } + } + if (node instanceof AST_With) { + node.body = node.body.transform(tt); + } + return node; + }); + return self.transform(tt); + }); + + AST_Node.DEFMETHOD("reset_opt_flags", function(compressor, rescan){ + var reduce_vars = rescan && compressor.option("reduce_vars"); + var toplevel = compressor.option("toplevel"); + var safe_ids = Object.create(null); + var suppressor = new TreeWalker(function(node) { + if (node instanceof AST_Symbol) { + var d = node.definition(); + if (node instanceof AST_SymbolRef) d.references.push(node); + d.fixed = false; + } + }); + var tw = new TreeWalker(function(node, descend){ + node._squeezed = false; + node._optimized = false; + if (reduce_vars) { + if (node instanceof AST_Toplevel) node.globals.each(reset_def); + if (node instanceof AST_Scope) node.variables.each(reset_def); + if (node instanceof AST_SymbolRef) { + var d = node.definition(); + d.references.push(node); + if (d.fixed === undefined || !is_safe(d) + || is_modified(node, 0, node.fixed_value() instanceof AST_Lambda)) { + d.fixed = false; + } else { + var parent = tw.parent(); + if (parent instanceof AST_Assign && parent.operator == "=" && node === parent.right + || parent instanceof AST_Call && node !== parent.expression + || parent instanceof AST_Return && node === parent.value && node.scope !== d.scope + || parent instanceof AST_VarDef && node === parent.value) { + d.escaped = true; + } + } + } + if (node instanceof AST_SymbolCatch) { + node.definition().fixed = false; + } + if (node instanceof AST_VarDef) { + var d = node.name.definition(); + if (d.fixed == null) { + if (node.value) { + d.fixed = function() { + return node.value; + }; + mark(d, false); + descend(); + } else { + d.fixed = null; + } + mark(d, true); + return true; + } else if (node.value) { + d.fixed = false; + } + } + if (node instanceof AST_Defun) { + var d = node.name.definition(); + if (!toplevel && d.global || is_safe(d)) { + d.fixed = false; + } else { + d.fixed = node; + mark(d, true); + } + var save_ids = safe_ids; + safe_ids = Object.create(null); + descend(); + safe_ids = save_ids; + return true; + } + if (node instanceof AST_Function) { + push(); + var iife; + if (!node.name + && (iife = tw.parent()) instanceof AST_Call + && iife.expression === node) { + // Virtually turn IIFE parameters into variable definitions: + // (function(a,b) {...})(c,d) => (function() {var a=c,b=d; ...})() + // So existing transformation rules can work on them. + node.argnames.forEach(function(arg, i) { + var d = arg.definition(); + if (!node.uses_arguments && d.fixed === undefined) { + d.fixed = function() { + return iife.args[i] || make_node(AST_Undefined, iife); + }; + mark(d, true); + } else { + d.fixed = false; + } + }); + } + descend(); + pop(); + return true; + } + if (node instanceof AST_Accessor) { + var save_ids = safe_ids; + safe_ids = Object.create(null); + descend(); + safe_ids = save_ids; + return true; + } + if (node instanceof AST_Binary + && (node.operator == "&&" || node.operator == "||")) { + node.left.walk(tw); + push(); + node.right.walk(tw); + pop(); + return true; + } + if (node instanceof AST_Conditional) { + node.condition.walk(tw); + push(); + node.consequent.walk(tw); + pop(); + push(); + node.alternative.walk(tw); + pop(); + return true; + } + if (node instanceof AST_If || node instanceof AST_DWLoop) { + node.condition.walk(tw); + push(); + node.body.walk(tw); + pop(); + if (node.alternative) { + push(); + node.alternative.walk(tw); + pop(); + } + return true; + } + if (node instanceof AST_LabeledStatement) { + push(); + node.body.walk(tw); + pop(); + return true; + } + if (node instanceof AST_For) { + if (node.init) node.init.walk(tw); + push(); + if (node.condition) node.condition.walk(tw); + node.body.walk(tw); + if (node.step) node.step.walk(tw); + pop(); + return true; + } + if (node instanceof AST_ForIn) { + node.init.walk(suppressor); + node.object.walk(tw); + push(); + node.body.walk(tw); + pop(); + return true; + } + if (node instanceof AST_Try) { + push(); + walk_body(node, tw); + pop(); + if (node.bcatch) { + push(); + node.bcatch.walk(tw); + pop(); + } + if (node.bfinally) node.bfinally.walk(tw); + return true; + } + if (node instanceof AST_SwitchBranch) { + push(); + descend(); + pop(); + return true; + } + } + }); + this.walk(tw); + + function mark(def, safe) { + safe_ids[def.id] = safe; + } + + function is_safe(def) { + if (safe_ids[def.id]) { + if (def.fixed == null) { + var orig = def.orig[0]; + if (orig instanceof AST_SymbolFunarg || orig.name == "arguments") return false; + def.fixed = make_node(AST_Undefined, orig); + } + return true; + } + } + + function push() { + safe_ids = Object.create(safe_ids); + } + + function pop() { + safe_ids = Object.getPrototypeOf(safe_ids); + } + + function reset_def(def) { + def.escaped = false; + if (def.scope.uses_eval) { + def.fixed = false; + } else if (toplevel || !def.global || def.orig[0] instanceof AST_SymbolConst) { + def.fixed = undefined; + } else { + def.fixed = false; + } + def.references = []; + def.should_replace = undefined; + } + + function is_modified(node, level, func) { + var parent = tw.parent(level); + if (is_lhs(node, parent) + || !func && parent instanceof AST_Call && parent.expression === node) { + return true; + } else if (parent instanceof AST_PropAccess && parent.expression === node) { + return !func && is_modified(parent, level + 1); + } + } + }); + + AST_SymbolRef.DEFMETHOD("fixed_value", function() { + var fixed = this.definition().fixed; + if (!fixed || fixed instanceof AST_Node) return fixed; + return fixed(); }); + function is_reference_const(ref) { + if (!(ref instanceof AST_SymbolRef)) return false; + var orig = ref.definition().orig; + for (var i = orig.length; --i >= 0;) { + if (orig[i] instanceof AST_SymbolConst) return true; + } + } + + function find_variable(compressor, name) { + var scope, i = 0; + while (scope = compressor.parent(i++)) { + if (scope instanceof AST_Scope) break; + if (scope instanceof AST_Catch) { + scope = scope.argname.definition().scope; + break; + } + } + return scope.find_variable(name); + } + function make_node(ctor, orig, props) { if (!props) props = {}; if (orig) { @@ -23362,37 +20077,34 @@ merge(Compressor.prototype, { return new ctor(props); }; - function make_node_from_constant(compressor, val, orig) { - // XXX: WIP. - // if (val instanceof AST_Node) return val.transform(new TreeTransformer(null, function(node){ - // if (node instanceof AST_SymbolRef) { - // var scope = compressor.find_parent(AST_Scope); - // var def = scope.find_variable(node); - // node.thedef = def; - // return node; - // } - // })).transform(compressor); - - if (val instanceof AST_Node) return val.transform(compressor); + function make_node_from_constant(val, orig) { switch (typeof val) { case "string": return make_node(AST_String, orig, { value: val - }).optimize(compressor); + }); case "number": - return make_node(isNaN(val) ? AST_NaN : AST_Number, orig, { - value: val - }).optimize(compressor); + if (isNaN(val)) return make_node(AST_NaN, orig); + if (isFinite(val)) { + return 1 / val < 0 ? make_node(AST_UnaryPrefix, orig, { + operator: "-", + expression: make_node(AST_Number, orig, { value: -val }) + }) : make_node(AST_Number, orig, { value: val }); + } + return val < 0 ? make_node(AST_UnaryPrefix, orig, { + operator: "-", + expression: make_node(AST_Infinity, orig) + }) : make_node(AST_Infinity, orig); case "boolean": - return make_node(val ? AST_True : AST_False, orig).optimize(compressor); + return make_node(val ? AST_True : AST_False, orig); case "undefined": - return make_node(AST_Undefined, orig).optimize(compressor); + return make_node(AST_Undefined, orig); default: if (val === null) { - return make_node(AST_Null, orig, { value: null }).optimize(compressor); + return make_node(AST_Null, orig, { value: null }); } if (val instanceof RegExp) { - return make_node(AST_RegExp, orig, { value: val }).optimize(compressor); + return make_node(AST_RegExp, orig, { value: val }); } throw new Error(string_template("Can't handle constant of type: {type}", { type: typeof val @@ -23400,6 +20112,23 @@ merge(Compressor.prototype, { } }; + // we shouldn't compress (1,func)(something) to + // func(something) because that changes the meaning of + // the func (becomes lexical instead of global). + function maintain_this_binding(parent, orig, val) { + if (parent instanceof AST_UnaryPrefix && parent.operator == "delete" + || parent instanceof AST_Call && parent.expression === orig + && (val instanceof AST_PropAccess || val instanceof AST_SymbolRef && val.name == "eval")) { + return make_node(AST_Seq, orig, { + car: make_node(AST_Number, orig, { + value: 0 + }), + cdr: val + }); + } + return val; + } + function as_statement_array(thing) { if (thing === null) return []; if (thing instanceof AST_BlockStatement) return thing.body; @@ -23423,6 +20152,13 @@ merge(Compressor.prototype, { return x; }; + function is_iife_call(node) { + if (node instanceof AST_Call && !(node instanceof AST_New)) { + return node.expression instanceof AST_Function || is_iife_call(node.expression); + } + return false; + } + function tighten_body(statements, compressor) { var CHANGED, max_iter = 10; do { @@ -23437,20 +20173,191 @@ merge(Compressor.prototype, { if (compressor.option("if_return")) { statements = handle_if_return(statements, compressor); } - if (compressor.option("sequences")) { + if (compressor.sequences_limit > 0) { statements = sequencesize(statements, compressor); } if (compressor.option("join_vars")) { statements = join_consecutive_vars(statements, compressor); } + if (compressor.option("collapse_vars")) { + statements = collapse_single_use_vars(statements, compressor); + } } while (CHANGED && max_iter-- > 0); - if (compressor.option("negate_iife")) { - negate_iifes(statements, compressor); - } - return statements; + function collapse_single_use_vars(statements, compressor) { + // Iterate statements backwards looking for a statement with a var/const + // declaration immediately preceding it. Grab the rightmost var definition + // and if it has exactly one reference then attempt to replace its reference + // in the statement with the var value and then erase the var definition. + + var self = compressor.self(); + var var_defs_removed = false; + var toplevel = compressor.option("toplevel"); + for (var stat_index = statements.length; --stat_index >= 0;) { + var stat = statements[stat_index]; + if (stat instanceof AST_Definitions) continue; + + // Process child blocks of statement if present. + [stat, stat.body, stat.alternative, stat.bcatch, stat.bfinally].forEach(function(node) { + node && node.body && collapse_single_use_vars(node.body, compressor); + }); + + // The variable definition must precede a statement. + if (stat_index <= 0) break; + var prev_stat_index = stat_index - 1; + var prev_stat = statements[prev_stat_index]; + if (!(prev_stat instanceof AST_Definitions)) continue; + var var_defs = prev_stat.definitions; + if (var_defs == null) continue; + + var var_names_seen = {}; + var side_effects_encountered = false; + var lvalues_encountered = false; + var lvalues = {}; + + // Scan variable definitions from right to left. + for (var var_defs_index = var_defs.length; --var_defs_index >= 0;) { + + // Obtain var declaration and var name with basic sanity check. + var var_decl = var_defs[var_defs_index]; + if (var_decl.value == null) break; + var var_name = var_decl.name.name; + if (!var_name || !var_name.length) break; + + // Bail if we've seen a var definition of same name before. + if (var_name in var_names_seen) break; + var_names_seen[var_name] = true; + + // Only interested in cases with just one reference to the variable. + var def = self.find_variable && self.find_variable(var_name); + if (!def || !def.references || def.references.length !== 1 + || var_name == "arguments" || (!toplevel && def.global)) { + side_effects_encountered = true; + continue; + } + var ref = def.references[0]; + + // Don't replace ref if eval() or with statement in scope. + if (ref.scope.uses_eval || ref.scope.uses_with) break; + + // Constant single use vars can be replaced in any scope. + if (var_decl.value.is_constant()) { + var ctt = new TreeTransformer(function(node) { + var parent = ctt.parent(); + if (parent instanceof AST_IterationStatement + && (parent.condition === node || parent.init === node)) { + return node; + } + if (node === ref) + return replace_var(node, parent, true); + }); + stat.transform(ctt); + continue; + } + + // Restrict var replacement to constants if side effects encountered. + if (side_effects_encountered |= lvalues_encountered) continue; + + var value_has_side_effects = var_decl.value.has_side_effects(compressor); + // Non-constant single use vars can only be replaced in same scope. + if (ref.scope !== self) { + side_effects_encountered |= value_has_side_effects; + continue; + } + + // Detect lvalues in var value. + var tw = new TreeWalker(function(node){ + if (node instanceof AST_SymbolRef && is_lvalue(node, tw.parent())) { + lvalues[node.name] = lvalues_encountered = true; + } + }); + var_decl.value.walk(tw); + + // Replace the non-constant single use var in statement if side effect free. + var unwind = false; + var tt = new TreeTransformer( + function preorder(node) { + if (unwind) return node; + var parent = tt.parent(); + if (node instanceof AST_Lambda + || node instanceof AST_Try + || node instanceof AST_With + || node instanceof AST_Case + || node instanceof AST_IterationStatement + || (parent instanceof AST_If && node !== parent.condition) + || (parent instanceof AST_Conditional && node !== parent.condition) + || (node instanceof AST_SymbolRef + && value_has_side_effects + && !are_references_in_scope(node.definition(), self)) + || (parent instanceof AST_Binary + && (parent.operator == "&&" || parent.operator == "||") + && node === parent.right) + || (parent instanceof AST_Switch && node !== parent.expression)) { + return side_effects_encountered = unwind = true, node; + } + function are_references_in_scope(def, scope) { + if (def.orig.length === 1 + && def.orig[0] instanceof AST_SymbolDefun) return true; + if (def.scope !== scope) return false; + var refs = def.references; + for (var i = 0, len = refs.length; i < len; i++) { + if (refs[i].scope !== scope) return false; + } + return true; + } + }, + function postorder(node) { + if (unwind) return node; + if (node === ref) + return unwind = true, replace_var(node, tt.parent(), false); + if (side_effects_encountered |= node.has_side_effects(compressor)) + return unwind = true, node; + if (lvalues_encountered && node instanceof AST_SymbolRef && node.name in lvalues) { + side_effects_encountered = true; + return unwind = true, node; + } + } + ); + stat.transform(tt); + } + } + + // Remove extraneous empty statments in block after removing var definitions. + // Leave at least one statement in `statements`. + if (var_defs_removed) for (var i = statements.length; --i >= 0;) { + if (statements.length > 1 && statements[i] instanceof AST_EmptyStatement) + statements.splice(i, 1); + } + + return statements; + + function is_lvalue(node, parent) { + return node instanceof AST_SymbolRef && is_lhs(node, parent); + } + function replace_var(node, parent, is_constant) { + if (is_lvalue(node, parent)) return node; + + // Remove var definition and return its value to the TreeTransformer to replace. + var value = maintain_this_binding(parent, node, var_decl.value); + var_decl.value = null; + + var_defs.splice(var_defs_index, 1); + if (var_defs.length === 0) { + statements[prev_stat_index] = make_node(AST_EmptyStatement, self); + var_defs_removed = true; + } + // Further optimize statement after substitution. + stat.reset_opt_flags(compressor); + + compressor.info("Collapsing " + (is_constant ? "constant" : "variable") + + " " + var_name + " [{file}:{line},{col}]", node.start); + CHANGED = true; + return value; + } + } + function process_for_angular(statements) { function has_inject(comment) { return /@ngInject/.test(comment.value); @@ -23549,8 +20456,9 @@ merge(Compressor.prototype, { function handle_if_return(statements, compressor) { var self = compressor.self(); + var multiple_if_returns = has_multiple_if_returns(statements); var in_lambda = self instanceof AST_Lambda; - var ret = []; + var ret = []; // Optimized statements, build from tail to front loop: for (var i = statements.length; --i >= 0;) { var stat = statements[i]; switch (true) { @@ -23586,11 +20494,12 @@ merge(Compressor.prototype, { } //--- // if (foo()) return x; [ return ; ] ==> return foo() ? x : undefined; - if ((ret.length == 0 || ret[0] instanceof AST_Return) && stat.body.value && !stat.alternative && in_lambda) { + if (multiple_if_returns && (ret.length == 0 || ret[0] instanceof AST_Return) + && stat.body.value && !stat.alternative && in_lambda) { CHANGED = true; stat = stat.clone(); stat.alternative = ret[0] || make_node(AST_Return, stat, { - value: make_node(AST_Undefined, stat) + value: null }); ret[0] = stat.transform(compressor); continue loop; @@ -23601,33 +20510,37 @@ merge(Compressor.prototype, { CHANGED = true; stat = stat.clone(); stat.condition = stat.condition.negate(compressor); + var body = as_statement_array(stat.alternative).concat(ret); + var funs = extract_functions_from_statement_array(body); stat.body = make_node(AST_BlockStatement, stat, { - body: as_statement_array(stat.alternative).concat(ret) + body: body }); stat.alternative = null; - ret = [ stat.transform(compressor) ]; + ret = funs.concat([ stat.transform(compressor) ]); continue loop; } + //--- - // XXX: what was the intention of this case? + // if (a) return b; if (c) return d; e; ==> return a ? b : c ? d : void e; + // // if sequences is not enabled, this can lead to an endless loop (issue #866). // however, with sequences on this helps producing slightly better output for // the example code. if (compressor.option("sequences") + && i > 0 && statements[i - 1] instanceof AST_If && statements[i - 1].body instanceof AST_Return && ret.length == 1 && in_lambda && ret[0] instanceof AST_SimpleStatement - && (!stat.alternative || stat.alternative instanceof AST_SimpleStatement)) { + && !stat.alternative) { CHANGED = true; ret.push(make_node(AST_Return, ret[0], { - value: make_node(AST_Undefined, ret[0]) + value: null }).transform(compressor)); - ret = as_statement_array(stat.alternative).concat(ret); ret.unshift(stat); continue loop; } } var ab = aborts(stat.body); - var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab.label) : null; + var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab) : null; if (ab && ((ab instanceof AST_Return && !ab.value && in_lambda) || (ab instanceof AST_Continue && self === loop_body(lct)) || (ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct))) { @@ -23649,7 +20562,7 @@ merge(Compressor.prototype, { } var ab = aborts(stat.alternative); - var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab.label) : null; + var lct = ab instanceof AST_LoopControl ? compressor.loopcontrol_target(ab) : null; if (ab && ((ab instanceof AST_Return && !ab.value && in_lambda) || (ab instanceof AST_Continue && self === loop_body(lct)) || (ab instanceof AST_Break && lct instanceof AST_BlockStatement && self === lct))) { @@ -23676,6 +20589,17 @@ merge(Compressor.prototype, { } } return ret; + + function has_multiple_if_returns(statements) { + var n = 0; + for (var i = statements.length; --i >= 0;) { + var stat = statements[i]; + if (stat instanceof AST_If && stat.body instanceof AST_Return) { + if (++n > 1) return true; + } + } + return false; + } }; function eliminate_dead_code(statements, compressor) { @@ -23687,9 +20611,9 @@ merge(Compressor.prototype, { extract_declarations_from_unreachable_code(compressor, stat, a); } else { if (stat instanceof AST_LoopControl) { - var lct = compressor.loopcontrol_target(stat.label); + var lct = compressor.loopcontrol_target(stat); if ((stat instanceof AST_Break - && lct instanceof AST_BlockStatement + && !(lct instanceof AST_IterationStatement) && loop_body(lct) === self) || (stat instanceof AST_Continue && loop_body(lct) === self)) { if (stat.label) { @@ -23720,8 +20644,15 @@ merge(Compressor.prototype, { seq = []; }; statements.forEach(function(stat){ - if (stat instanceof AST_SimpleStatement && seq.length < 2000) seq.push(stat.body); - else push_seq(), ret.push(stat); + if (stat instanceof AST_SimpleStatement) { + if (seqLength(seq) >= compressor.sequences_limit) push_seq(); + var body = stat.body; + if (seq.length > 0) body = body.drop_side_effect_free(compressor); + if (body) seq.push(body); + } else { + push_seq(); + ret.push(stat); + } }); push_seq(); ret = sequencesize_2(ret, compressor); @@ -23729,6 +20660,18 @@ merge(Compressor.prototype, { return ret; }; + function seqLength(a) { + for (var len = 0, i = 0; i < a.length; ++i) { + var stat = a[i]; + if (stat instanceof AST_Seq) { + len += stat.len(); + } else { + len++; + } + } + return len; + }; + function sequencesize_2(statements, compressor) { function cons_seq(right) { ret.pop(); @@ -23754,7 +20697,7 @@ merge(Compressor.prototype, { stat.init = cons_seq(stat.init); } else if (!stat.init) { - stat.init = prev.body; + stat.init = prev.body.drop_side_effect_free(compressor); ret.pop(); } } catch(ex) { @@ -23771,7 +20714,7 @@ merge(Compressor.prototype, { stat.value = cons_seq(stat.value); } else if (stat instanceof AST_Exit) { - stat.value = cons_seq(make_node(AST_Undefined, stat)); + stat.value = cons_seq(make_node(AST_Undefined, stat).transform(compressor)); } else if (stat instanceof AST_Switch) { stat.expression = cons_seq(stat.expression); @@ -23791,7 +20734,7 @@ merge(Compressor.prototype, { CHANGED = true; } else if (stat instanceof AST_For - && prev instanceof AST_Definitions + && prev instanceof AST_Var && (!stat.init || stat.init.TYPE == prev.TYPE)) { CHANGED = true; a.pop(); @@ -23811,44 +20754,24 @@ merge(Compressor.prototype, { }, []); }; - function negate_iifes(statements, compressor) { - statements.forEach(function(stat){ - if (stat instanceof AST_SimpleStatement) { - stat.body = (function transform(thing) { - return thing.transform(new TreeTransformer(function(node){ - if (node instanceof AST_Call && node.expression instanceof AST_Function) { - return make_node(AST_UnaryPrefix, node, { - operator: "!", - expression: node - }); - } - else if (node instanceof AST_Call) { - node.expression = transform(node.expression); - } - else if (node instanceof AST_Seq) { - node.car = transform(node.car); - } - else if (node instanceof AST_Conditional) { - var expr = transform(node.condition); - if (expr !== node.condition) { - // it has been negated, reverse - node.condition = expr; - var tmp = node.consequent; - node.consequent = node.alternative; - node.alternative = tmp; - } - } - return node; - })); - })(stat.body); - } - }); - }; - }; + function extract_functions_from_statement_array(statements) { + var funs = []; + for (var i = statements.length - 1; i >= 0; --i) { + var stat = statements[i]; + if (stat instanceof AST_Defun) { + statements.splice(i, 1); + funs.unshift(stat); + } + } + return funs; + } + function extract_declarations_from_unreachable_code(compressor, stat, target) { - compressor.warn("Dropping unreachable code [{file}:{line},{col}]", stat.start); + if (!(stat instanceof AST_Defun)) { + compressor.warn("Dropping unreachable code [{file}:{line},{col}]", stat.start); + } stat.walk(new TreeWalker(function(node){ if (node instanceof AST_Definitions) { compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]", node.start); @@ -23866,13 +20789,81 @@ merge(Compressor.prototype, { })); }; + function is_undefined(node, compressor) { + return node.is_undefined + || node instanceof AST_Undefined + || node instanceof AST_UnaryPrefix + && node.operator == "void" + && !node.expression.has_side_effects(compressor); + } + + // may_throw_on_access() + // returns true if this node may be null, undefined or contain `AST_Accessor` + (function(def) { + AST_Node.DEFMETHOD("may_throw_on_access", function(compressor) { + var pure_getters = compressor.option("pure_getters"); + return !pure_getters || this._throw_on_access(pure_getters); + }); + + function is_strict(pure_getters) { + return /strict/.test(pure_getters); + } + + def(AST_Node, is_strict); + def(AST_Null, return_true); + def(AST_Undefined, return_true); + def(AST_Constant, return_false); + def(AST_Array, return_false); + def(AST_Object, function(pure_getters) { + if (!is_strict(pure_getters)) return false; + for (var i = this.properties.length; --i >=0;) + if (this.properties[i].value instanceof AST_Accessor) return true; + return false; + }); + def(AST_Function, return_false); + def(AST_UnaryPostfix, return_false); + def(AST_UnaryPrefix, function() { + return this.operator == "void"; + }); + def(AST_Binary, function(pure_getters) { + switch (this.operator) { + case "&&": + return this.left._throw_on_access(pure_getters); + case "||": + return this.left._throw_on_access(pure_getters) + && this.right._throw_on_access(pure_getters); + default: + return false; + } + }) + def(AST_Assign, function(pure_getters) { + return this.operator == "=" + && this.right._throw_on_access(pure_getters); + }) + def(AST_Conditional, function(pure_getters) { + return this.consequent._throw_on_access(pure_getters) + || this.alternative._throw_on_access(pure_getters); + }) + def(AST_Seq, function(pure_getters) { + return this.cdr._throw_on_access(pure_getters); + }); + def(AST_SymbolRef, function(pure_getters) { + if (this.is_undefined) return true; + if (!is_strict(pure_getters)) return false; + var fixed = this.fixed_value(); + return !fixed || fixed._throw_on_access(pure_getters); + }); + })(function(node, func) { + node.DEFMETHOD("_throw_on_access", func); + }); + /* -----[ boolean/negation helpers ]----- */ // methods to determine whether an expression has a boolean result type (function (def){ var unary_bool = [ "!", "delete" ]; var binary_bool = [ "in", "instanceof", "==", "!=", "===", "!==", "<", "<=", ">=", ">" ]; - def(AST_Node, function(){ return false }); + def(AST_Node, return_false); def(AST_UnaryPrefix, function(){ return member(this.operator, unary_bool); }); @@ -23890,16 +20881,44 @@ merge(Compressor.prototype, { def(AST_Seq, function(){ return this.cdr.is_boolean(); }); - def(AST_True, function(){ return true }); - def(AST_False, function(){ return true }); + def(AST_True, return_true); + def(AST_False, return_true); })(function(node, func){ node.DEFMETHOD("is_boolean", func); }); + // methods to determine if an expression has a numeric result type + (function (def){ + def(AST_Node, return_false); + def(AST_Number, return_true); + var unary = makePredicate("+ - ~ ++ --"); + def(AST_Unary, function(){ + return unary(this.operator); + }); + var binary = makePredicate("- * / % & | ^ << >> >>>"); + def(AST_Binary, function(compressor){ + return binary(this.operator) || this.operator == "+" + && this.left.is_number(compressor) + && this.right.is_number(compressor); + }); + def(AST_Assign, function(compressor){ + return binary(this.operator.slice(0, -1)) + || this.operator == "=" && this.right.is_number(compressor); + }); + def(AST_Seq, function(compressor){ + return this.cdr.is_number(compressor); + }); + def(AST_Conditional, function(compressor){ + return this.consequent.is_number(compressor) && this.alternative.is_number(compressor); + }); + })(function(node, func){ + node.DEFMETHOD("is_number", func); + }); + // methods to determine if an expression has a string result type (function (def){ - def(AST_Node, function(){ return false }); - def(AST_String, function(){ return true }); + def(AST_Node, return_false); + def(AST_String, return_true); def(AST_UnaryPrefix, function(){ return this.operator == "typeof"; }); @@ -23916,49 +20935,159 @@ merge(Compressor.prototype, { def(AST_Conditional, function(compressor){ return this.consequent.is_string(compressor) && this.alternative.is_string(compressor); }); - def(AST_Call, function(compressor){ - return compressor.option("unsafe") - && this.expression instanceof AST_SymbolRef - && this.expression.name == "String" - && this.expression.undeclared(); + })(function(node, func){ + node.DEFMETHOD("is_string", func); + }); + + var unary_side_effects = makePredicate("delete ++ --"); + + function is_lhs(node, parent) { + if (parent instanceof AST_Unary && unary_side_effects(parent.operator)) return parent.expression; + if (parent instanceof AST_Assign && parent.left === node) return node; + } + + (function (def){ + AST_Node.DEFMETHOD("resolve_defines", function(compressor) { + if (!compressor.option("global_defs")) return; + var def = this._find_defs(compressor, ""); + if (def) { + var node, parent = this, level = 0; + do { + node = parent; + parent = compressor.parent(level++); + } while (parent instanceof AST_PropAccess && parent.expression === node); + if (is_lhs(node, parent)) { + compressor.warn('global_defs ' + this.print_to_string() + ' redefined [{file}:{line},{col}]', this.start); + } else { + return def; + } + } + }); + function to_node(value, orig) { + if (value instanceof AST_Node) return make_node(value.CTOR, orig, value); + if (Array.isArray(value)) return make_node(AST_Array, orig, { + elements: value.map(function(value) { + return to_node(value, orig); + }) + }); + if (value && typeof value == "object") { + var props = []; + for (var key in value) { + props.push(make_node(AST_ObjectKeyVal, orig, { + key: key, + value: to_node(value[key], orig) + })); + } + return make_node(AST_Object, orig, { + properties: props + }); + } + return make_node_from_constant(value, orig); + } + def(AST_Node, noop); + def(AST_Dot, function(compressor, suffix){ + return this.expression._find_defs(compressor, "." + this.property + suffix); + }); + def(AST_SymbolRef, function(compressor, suffix){ + if (!this.global()) return; + var name; + var defines = compressor.option("global_defs"); + if (defines && HOP(defines, (name = this.name + suffix))) { + var node = to_node(defines[name], this); + var top = compressor.find_parent(AST_Toplevel); + node.walk(new TreeWalker(function(node) { + if (node instanceof AST_SymbolRef) { + node.scope = top; + node.thedef = top.def_global(node); + } + })); + return node; + } }); })(function(node, func){ - node.DEFMETHOD("is_string", func); + node.DEFMETHOD("_find_defs", func); }); - function best_of(ast1, ast2) { + function best_of_expression(ast1, ast2) { return ast1.print_to_string().length > ast2.print_to_string().length ? ast2 : ast1; - }; + } + + function best_of_statement(ast1, ast2) { + return best_of_expression(make_node(AST_SimpleStatement, ast1, { + body: ast1 + }), make_node(AST_SimpleStatement, ast2, { + body: ast2 + })).body; + } + + function best_of(compressor, ast1, ast2) { + return (first_in_statement(compressor) ? best_of_statement : best_of_expression)(ast1, ast2); + } // methods to evaluate a constant expression (function (def){ - // The evaluate method returns an array with one or two - // elements. If the node has been successfully reduced to a - // constant, then the second element tells us the value; - // otherwise the second element is missing. The first element - // of the array is always an AST_Node descendant; if - // evaluation was successful it's a node that represents the - // constant; otherwise it's the original or a replacement node. + // If the node has been successfully reduced to a constant, + // then its value is returned; otherwise the element itself + // is returned. + // They can be distinguished as constant value is never a + // descendant of AST_Node. AST_Node.DEFMETHOD("evaluate", function(compressor){ - if (!compressor.option("evaluate")) return [ this ]; + if (!compressor.option("evaluate")) return this; try { var val = this._eval(compressor); - return [ best_of(make_node_from_constant(compressor, val, this), this), val ]; + return !val || val instanceof RegExp || typeof val != "object" ? val : this; } catch(ex) { if (ex !== def) throw ex; - return [ this ]; + return this; + } + }); + var unaryPrefix = makePredicate("! ~ - + void"); + AST_Node.DEFMETHOD("is_constant", function(){ + // Accomodate when compress option evaluate=false + // as well as the common constant expressions !0 and -1 + if (this instanceof AST_Constant) { + return !(this instanceof AST_RegExp); + } else { + return this instanceof AST_UnaryPrefix + && this.expression instanceof AST_Constant + && unaryPrefix(this.operator); + } + }); + // Obtain the constant value of an expression already known to be constant. + // Result only valid iff this.is_constant() is true. + AST_Node.DEFMETHOD("constant_value", function(compressor){ + // Accomodate when option evaluate=false. + if (this instanceof AST_Constant && !(this instanceof AST_RegExp)) { + return this.value; + } + // Accomodate the common constant expressions !0 and -1 when option evaluate=false. + if (this instanceof AST_UnaryPrefix + && this.expression instanceof AST_Constant) switch (this.operator) { + case "!": + return !this.expression.value; + case "~": + return ~this.expression.value; + case "-": + return -this.expression.value; + case "+": + return +this.expression.value; + default: + throw new Error(string_template("Cannot evaluate unary expression {value}", { + value: this.print_to_string() + })); } + var result = this.evaluate(compressor); + if (result !== this) { + return result; + } + throw new Error(string_template("Cannot evaluate constant [{file}:{line},{col}]", this.start)); }); def(AST_Statement, function(){ throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]", this.start)); }); - def(AST_Function, function(){ - // XXX: AST_Function inherits from AST_Scope, which itself - // inherits from AST_Statement; however, an AST_Function - // isn't really a statement. This could byte in other - // places too. :-( Wish JS had multiple inheritance. + def(AST_Lambda, function(){ throw def; }); function ev(node, compressor) { @@ -23972,6 +21101,34 @@ merge(Compressor.prototype, { def(AST_Constant, function(){ return this.getValue(); }); + def(AST_Array, function(compressor){ + if (compressor.option("unsafe")) { + return this.elements.map(function(element) { + return ev(element, compressor); + }); + } + throw def; + }); + def(AST_Object, function(compressor){ + if (compressor.option("unsafe")) { + var val = {}; + for (var i = 0, len = this.properties.length; i < len; i++) { + var prop = this.properties[i]; + var key = prop.key; + if (key instanceof AST_Symbol) { + key = key.name; + } else if (key instanceof AST_Node) { + key = ev(key, compressor); + } + if (typeof Object.prototype[key] === 'function') { + throw def; + } + val[key] = ev(prop.value, compressor); + } + return val; + } + throw def; + }); def(AST_UnaryPrefix, function(compressor){ var e = this.expression; switch (this.operator) { @@ -23990,42 +21147,43 @@ merge(Compressor.prototype, { return typeof e; case "void": return void ev(e, compressor); case "~": return ~ev(e, compressor); - case "-": - e = ev(e, compressor); - if (e === 0) throw def; - return -e; + case "-": return -ev(e, compressor); case "+": return +ev(e, compressor); } throw def; }); def(AST_Binary, function(c){ - var left = this.left, right = this.right; + var left = this.left, right = this.right, result; switch (this.operator) { - case "&&" : return ev(left, c) && ev(right, c); - case "||" : return ev(left, c) || ev(right, c); - case "|" : return ev(left, c) | ev(right, c); - case "&" : return ev(left, c) & ev(right, c); - case "^" : return ev(left, c) ^ ev(right, c); - case "+" : return ev(left, c) + ev(right, c); - case "*" : return ev(left, c) * ev(right, c); - case "/" : return ev(left, c) / ev(right, c); - case "%" : return ev(left, c) % ev(right, c); - case "-" : return ev(left, c) - ev(right, c); - case "<<" : return ev(left, c) << ev(right, c); - case ">>" : return ev(left, c) >> ev(right, c); - case ">>>" : return ev(left, c) >>> ev(right, c); - case "==" : return ev(left, c) == ev(right, c); - case "===" : return ev(left, c) === ev(right, c); - case "!=" : return ev(left, c) != ev(right, c); - case "!==" : return ev(left, c) !== ev(right, c); - case "<" : return ev(left, c) < ev(right, c); - case "<=" : return ev(left, c) <= ev(right, c); - case ">" : return ev(left, c) > ev(right, c); - case ">=" : return ev(left, c) >= ev(right, c); - case "in" : return ev(left, c) in ev(right, c); - case "instanceof" : return ev(left, c) instanceof ev(right, c); + case "&&" : result = ev(left, c) && ev(right, c); break; + case "||" : result = ev(left, c) || ev(right, c); break; + case "|" : result = ev(left, c) | ev(right, c); break; + case "&" : result = ev(left, c) & ev(right, c); break; + case "^" : result = ev(left, c) ^ ev(right, c); break; + case "+" : result = ev(left, c) + ev(right, c); break; + case "*" : result = ev(left, c) * ev(right, c); break; + case "/" : result = ev(left, c) / ev(right, c); break; + case "%" : result = ev(left, c) % ev(right, c); break; + case "-" : result = ev(left, c) - ev(right, c); break; + case "<<" : result = ev(left, c) << ev(right, c); break; + case ">>" : result = ev(left, c) >> ev(right, c); break; + case ">>>" : result = ev(left, c) >>> ev(right, c); break; + case "==" : result = ev(left, c) == ev(right, c); break; + case "===" : result = ev(left, c) === ev(right, c); break; + case "!=" : result = ev(left, c) != ev(right, c); break; + case "!==" : result = ev(left, c) !== ev(right, c); break; + case "<" : result = ev(left, c) < ev(right, c); break; + case "<=" : result = ev(left, c) <= ev(right, c); break; + case ">" : result = ev(left, c) > ev(right, c); break; + case ">=" : result = ev(left, c) >= ev(right, c); break; + default: + throw def; } - throw def; + if (isNaN(result) && c.find_parent(AST_With)) { + // leave original expression as is + throw def; + } + return result; }); def(AST_Conditional, function(compressor){ return ev(this.condition, compressor) @@ -24033,15 +21191,31 @@ merge(Compressor.prototype, { : ev(this.alternative, compressor); }); def(AST_SymbolRef, function(compressor){ - var d = this.definition(); - if (d && d.constant && d.init) return ev(d.init, compressor); - throw def; + if (!compressor.option("reduce_vars") || this._evaluating) throw def; + this._evaluating = true; + try { + var fixed = this.fixed_value(); + if (!fixed) throw def; + var value = ev(fixed, compressor); + if (!HOP(fixed, "_eval")) fixed._eval = function() { + return value; + }; + if (value && typeof value == "object" && this.definition().escaped) throw def; + return value; + } finally { + this._evaluating = false; + } }); - def(AST_Dot, function(compressor){ - if (compressor.option("unsafe") && this.property == "length") { - var str = ev(this.expression, compressor); - if (typeof str == "string") - return str.length; + def(AST_PropAccess, function(compressor){ + if (compressor.option("unsafe")) { + var key = this.property; + if (key instanceof AST_Node) { + key = ev(key, compressor); + } + var val = ev(this.expression, compressor); + if (val && HOP(val, key)) { + return val[key]; + } } throw def; }); @@ -24056,7 +21230,17 @@ merge(Compressor.prototype, { operator: "!", expression: exp }); - }; + } + function best(orig, alt, first_in_statement) { + var negated = basic_negation(orig); + if (first_in_statement) { + var stat = make_node(AST_SimpleStatement, alt, { + body: alt + }); + return best_of_expression(negated, stat) === stat ? alt : negated; + } + return best_of_expression(negated, alt); + } def(AST_Node, function(){ return basic_negation(this); }); @@ -24076,13 +21260,13 @@ merge(Compressor.prototype, { self.cdr = self.cdr.negate(compressor); return self; }); - def(AST_Conditional, function(compressor){ + def(AST_Conditional, function(compressor, first_in_statement){ var self = this.clone(); self.consequent = self.consequent.negate(compressor); self.alternative = self.alternative.negate(compressor); - return best_of(basic_negation(this), self); + return best(this, self, first_in_statement); }); - def(AST_Binary, function(compressor){ + def(AST_Binary, function(compressor, first_in_statement){ var self = this.clone(), op = this.operator; if (compressor.option("unsafe_comps")) { switch (op) { @@ -24099,97 +21283,125 @@ merge(Compressor.prototype, { case "!==": self.operator = "==="; return self; case "&&": self.operator = "||"; - self.left = self.left.negate(compressor); + self.left = self.left.negate(compressor, first_in_statement); self.right = self.right.negate(compressor); - return best_of(basic_negation(this), self); + return best(this, self, first_in_statement); case "||": self.operator = "&&"; - self.left = self.left.negate(compressor); + self.left = self.left.negate(compressor, first_in_statement); self.right = self.right.negate(compressor); - return best_of(basic_negation(this), self); + return best(this, self, first_in_statement); } return basic_negation(this); }); })(function(node, func){ - node.DEFMETHOD("negate", function(compressor){ - return func.call(this, compressor); + node.DEFMETHOD("negate", function(compressor, first_in_statement){ + return func.call(this, compressor, first_in_statement); }); }); + AST_Call.DEFMETHOD("has_pure_annotation", function(compressor) { + if (!compressor.option("side_effects")) return false; + if (this.pure !== undefined) return this.pure; + var pure = false; + var comments, last_comment; + if (this.start + && (comments = this.start.comments_before) + && comments.length + && /[@#]__PURE__/.test((last_comment = comments[comments.length - 1]).value)) { + pure = last_comment; + } + return this.pure = pure; + }); + // determine if expression has side effects (function(def){ - def(AST_Node, function(compressor){ return true }); + def(AST_Node, return_true); - def(AST_EmptyStatement, function(compressor){ return false }); - def(AST_Constant, function(compressor){ return false }); - def(AST_This, function(compressor){ return false }); + def(AST_EmptyStatement, return_false); + def(AST_Constant, return_false); + def(AST_This, return_false); def(AST_Call, function(compressor){ - var pure = compressor.option("pure_funcs"); - if (!pure) return true; - if (typeof pure == "function") return pure(this); - return pure.indexOf(this.expression.print_to_string()) < 0; - }); - - def(AST_Block, function(compressor){ - for (var i = this.body.length; --i >= 0;) { - if (this.body[i].has_side_effects(compressor)) + if (!this.has_pure_annotation(compressor) && compressor.pure_funcs(this)) return true; + for (var i = this.args.length; --i >= 0;) { + if (this.args[i].has_side_effects(compressor)) return true; } return false; }); + function any(list, compressor) { + for (var i = list.length; --i >= 0;) + if (list[i].has_side_effects(compressor)) + return true; + return false; + } + + def(AST_Block, function(compressor){ + return any(this.body, compressor); + }); + def(AST_Switch, function(compressor){ + return this.expression.has_side_effects(compressor) + || any(this.body, compressor); + }); + def(AST_Case, function(compressor){ + return this.expression.has_side_effects(compressor) + || any(this.body, compressor); + }); + def(AST_Try, function(compressor){ + return any(this.body, compressor) + || this.bcatch && this.bcatch.has_side_effects(compressor) + || this.bfinally && this.bfinally.has_side_effects(compressor); + }); + def(AST_If, function(compressor){ + return this.condition.has_side_effects(compressor) + || this.body && this.body.has_side_effects(compressor) + || this.alternative && this.alternative.has_side_effects(compressor); + }); + def(AST_LabeledStatement, function(compressor){ + return this.body.has_side_effects(compressor); + }); def(AST_SimpleStatement, function(compressor){ return this.body.has_side_effects(compressor); }); - def(AST_Defun, function(compressor){ return true }); - def(AST_Function, function(compressor){ return false }); + def(AST_Defun, return_true); + def(AST_Function, return_false); def(AST_Binary, function(compressor){ return this.left.has_side_effects(compressor) || this.right.has_side_effects(compressor); }); - def(AST_Assign, function(compressor){ return true }); + def(AST_Assign, return_true); def(AST_Conditional, function(compressor){ return this.condition.has_side_effects(compressor) || this.consequent.has_side_effects(compressor) || this.alternative.has_side_effects(compressor); }); def(AST_Unary, function(compressor){ - return this.operator == "delete" - || this.operator == "++" - || this.operator == "--" + return unary_side_effects(this.operator) || this.expression.has_side_effects(compressor); }); def(AST_SymbolRef, function(compressor){ - return this.global() && this.undeclared(); + return this.undeclared(); }); def(AST_Object, function(compressor){ - for (var i = this.properties.length; --i >= 0;) - if (this.properties[i].has_side_effects(compressor)) - return true; - return false; + return any(this.properties, compressor); }); def(AST_ObjectProperty, function(compressor){ return this.value.has_side_effects(compressor); }); def(AST_Array, function(compressor){ - for (var i = this.elements.length; --i >= 0;) - if (this.elements[i].has_side_effects(compressor)) - return true; - return false; + return any(this.elements, compressor); }); def(AST_Dot, function(compressor){ - if (!compressor.option("pure_getters")) return true; - return this.expression.has_side_effects(compressor); + return this.expression.may_throw_on_access(compressor) + || this.expression.has_side_effects(compressor); }); def(AST_Sub, function(compressor){ - if (!compressor.option("pure_getters")) return true; - return this.expression.has_side_effects(compressor) + return this.expression.may_throw_on_access(compressor) + || this.expression.has_side_effects(compressor) || this.property.has_side_effects(compressor); }); - def(AST_PropAccess, function(compressor){ - return !compressor.option("pure_getters"); - }); def(AST_Seq, function(compressor){ return this.car.has_side_effects(compressor) || this.cdr.has_side_effects(compressor); @@ -24203,8 +21415,8 @@ merge(Compressor.prototype, { return thing && thing.aborts(); }; (function(def){ - def(AST_Statement, function(){ return null }); - def(AST_Jump, function(){ return this }); + def(AST_Statement, return_null); + def(AST_Jump, return_this); function block_aborts(){ var n = this.body.length; return n > 0 && aborts(this.body[n - 1]); @@ -24221,7 +21433,7 @@ merge(Compressor.prototype, { /* -----[ optimizers ]----- */ OPT(AST_Directive, function(self, compressor){ - if (compressor.has_directive(self.value) === "up") { + if (compressor.has_directive(self.value) !== self) { return make_node(AST_EmptyStatement, self); } return self; @@ -24235,7 +21447,7 @@ merge(Compressor.prototype, { OPT(AST_LabeledStatement, function(self, compressor){ if (self.body instanceof AST_Break - && compressor.loopcontrol_target(self.body.label) === self.body) { + && compressor.loopcontrol_target(self.body) === self.body) { return make_node(AST_EmptyStatement, self); } return self.label.references.length == 0 ? self.body : self; @@ -24258,11 +21470,27 @@ merge(Compressor.prototype, { AST_Scope.DEFMETHOD("drop_unused", function(compressor){ var self = this; if (compressor.has_directive("use asm")) return self; + var toplevel = compressor.option("toplevel"); if (compressor.option("unused") - && !(self instanceof AST_Toplevel) + && (!(self instanceof AST_Toplevel) || toplevel) && !self.uses_eval - ) { + && !self.uses_with) { + var assign_as_unused = !/keep_assign/.test(compressor.option("unused")); + var drop_funcs = /funcs/.test(toplevel); + var drop_vars = /vars/.test(toplevel); + if (!(self instanceof AST_Toplevel) || toplevel == true) { + drop_funcs = drop_vars = true; + } var in_use = []; + var in_use_ids = Object.create(null); // avoid expensive linear scans of in_use + if (self instanceof AST_Toplevel && compressor.top_retain) { + self.variables.each(function(def) { + if (compressor.top_retain(def) && !(def.id in in_use_ids)) { + in_use_ids[def.id] = true; + in_use.push(def); + } + }); + } var initializations = new Dictionary(); // pass 1: find out which symbols are directly used in // this scope (not in nested scopes). @@ -24270,11 +21498,25 @@ merge(Compressor.prototype, { var tw = new TreeWalker(function(node, descend){ if (node !== self) { if (node instanceof AST_Defun) { + if (!drop_funcs && scope === self) { + var node_def = node.name.definition(); + if (!(node_def.id in in_use_ids)) { + in_use_ids[node_def.id] = true; + in_use.push(node_def); + } + } initializations.add(node.name.name, node); return true; // don't go in nested scopes } if (node instanceof AST_Definitions && scope === self) { node.definitions.forEach(function(def){ + if (!drop_vars) { + var node_def = def.name.definition(); + if (!(node_def.id in in_use_ids)) { + in_use_ids[node_def.id] = true; + in_use.push(node_def); + } + } if (def.value) { initializations.add(def.name.name, def.value); if (def.value.has_side_effects(compressor)) { @@ -24284,8 +21526,21 @@ merge(Compressor.prototype, { }); return true; } + if (assign_as_unused + && node instanceof AST_Assign + && node.operator == "=" + && node.left instanceof AST_SymbolRef + && !is_reference_const(node.left) + && scope === self) { + node.right.walk(tw); + return true; + } if (node instanceof AST_SymbolRef) { - push_uniq(in_use, node.definition()); + var node_def = node.definition(); + if (!(node_def.id in in_use_ids)) { + in_use_ids[node_def.id] = true; + in_use.push(node_def); + } return true; } if (node instanceof AST_Scope) { @@ -24308,7 +21563,11 @@ merge(Compressor.prototype, { if (init) init.forEach(function(init){ var tw = new TreeWalker(function(node){ if (node instanceof AST_SymbolRef) { - push_uniq(in_use, node.definition()); + var node_def = node.definition(); + if (!(node_def.id in in_use_ids)) { + in_use_ids[node_def.id] = true; + in_use.push(node_def); + } } }); init.walk(tw); @@ -24318,26 +21577,40 @@ merge(Compressor.prototype, { // pass 3: we should drop declarations not in_use var tt = new TreeTransformer( function before(node, descend, in_list) { + if (node instanceof AST_Function + && node.name + && !compressor.option("keep_fnames")) { + var def = node.name.definition(); + // any declarations with same name will overshadow + // name of this anonymous function and can therefore + // never be used anywhere + if (!(def.id in in_use_ids) || def.orig.length > 1) + node.name = null; + } if (node instanceof AST_Lambda && !(node instanceof AST_Accessor)) { - if (!compressor.option("keep_fargs")) { - for (var a = node.argnames, i = a.length; --i >= 0;) { - var sym = a[i]; - if (sym.unreferenced()) { + var trim = !compressor.option("keep_fargs"); + for (var a = node.argnames, i = a.length; --i >= 0;) { + var sym = a[i]; + if (!(sym.definition().id in in_use_ids)) { + sym.__unused = true; + if (trim) { a.pop(); - compressor.warn("Dropping unused function argument {name} [{file}:{line},{col}]", { + compressor[sym.unreferenced() ? "warn" : "info"]("Dropping unused function argument {name} [{file}:{line},{col}]", { name : sym.name, file : sym.start.file, line : sym.start.line, col : sym.start.col }); } - else break; + } + else { + trim = false; } } } - if (node instanceof AST_Defun && node !== self) { - if (!member(node.name.definition(), in_use)) { - compressor.warn("Dropping unused function {name} [{file}:{line},{col}]", { + if (drop_funcs && node instanceof AST_Defun && node !== self) { + if (!(node.name.definition().id in in_use_ids)) { + compressor[node.name.unreferenced() ? "warn" : "info"]("Dropping unused function {name} [{file}:{line},{col}]", { name : node.name.name, file : node.name.start.file, line : node.name.start.line, @@ -24347,21 +21620,26 @@ merge(Compressor.prototype, { } return node; } - if (node instanceof AST_Definitions && !(tt.parent() instanceof AST_ForIn)) { + if (drop_vars && node instanceof AST_Definitions && !(tt.parent() instanceof AST_ForIn && tt.parent().init === node)) { var def = node.definitions.filter(function(def){ - if (member(def.name.definition(), in_use)) return true; + if (def.value) def.value = def.value.transform(tt); + var sym = def.name.definition(); + if (sym.id in in_use_ids) return true; + if (sym.orig[0] instanceof AST_SymbolCatch) { + def.value = def.value && def.value.drop_side_effect_free(compressor); + return true; + } var w = { name : def.name.name, file : def.name.start.file, line : def.name.start.line, col : def.name.start.col }; - if (def.value && def.value.has_side_effects(compressor)) { - def._unused_side_effects = true; + if (def.value && (def._unused_side_effects = def.value.drop_side_effect_free(compressor))) { compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]", w); return true; } - compressor.warn("Dropping unused variable {name} [{file}:{line},{col}]", w); + compressor[def.name.unreferenced() ? "warn" : "info"]("Dropping unused variable {name} [{file}:{line},{col}]", w); return false; }); // place uninitialized names at the start @@ -24377,7 +21655,7 @@ merge(Compressor.prototype, { for (var i = 0; i < def.length;) { var x = def[i]; if (x._unused_side_effects) { - side_effects.push(x.value); + side_effects.push(x._unused_side_effects); def.splice(i, 1); } else { if (side_effects.length > 0) { @@ -24410,23 +21688,42 @@ merge(Compressor.prototype, { } return node; } + if (drop_vars && assign_as_unused + && node instanceof AST_Assign + && node.operator == "=" + && node.left instanceof AST_SymbolRef) { + var def = node.left.definition(); + if (!(def.id in in_use_ids) + && self.variables.get(def.name) === def) { + return maintain_this_binding(tt.parent(), node, node.right.transform(tt)); + } + } + // certain combination of unused name + side effect leads to: + // https://github.com/mishoo/UglifyJS2/issues/44 + // https://github.com/mishoo/UglifyJS2/issues/1830 + // that's an invalid AST. + // We fix it at this stage by moving the `var` outside the `for`. if (node instanceof AST_For) { descend(node, this); - if (node.init instanceof AST_BlockStatement) { - // certain combination of unused name + side effect leads to: - // https://github.com/mishoo/UglifyJS2/issues/44 - // that's an invalid AST. - // We fix it at this stage by moving the `var` outside the `for`. - - var body = node.init.body.slice(0, -1); - node.init = node.init.body.slice(-1)[0].body; - body.push(node); - - return in_list ? MAP.splice(body) : make_node(AST_BlockStatement, node, { - body: body - }); + var block = node.init; + node.init = block.body.pop(); + block.body.push(node); + return in_list ? MAP.splice(block.body) : block; + } else if (is_empty(node.init)) { + node.init = null; + } + return node; + } + if (node instanceof AST_LabeledStatement && node.body instanceof AST_For) { + descend(node, this); + if (node.body instanceof AST_BlockStatement) { + var block = node.body; + node.body = block.body.pop(); + block.body.push(node); + return in_list ? MAP.splice(block.body) : block; } + return node; } if (node instanceof AST_Scope && node !== self) return node; @@ -24472,10 +21769,13 @@ merge(Compressor.prototype, { vars.set(def.name.name, def); ++vars_found; }); - var seq = node.to_assignments(); + var seq = node.to_assignments(compressor); var p = tt.parent(); if (p instanceof AST_ForIn && p.init === node) { - if (seq == null) return node.definitions[0].name; + if (seq == null) { + var def = node.definitions[0].name; + return make_node(AST_SymbolRef, def, def); + } return seq; } if (p instanceof AST_For && p.init === node) { @@ -24562,32 +21862,187 @@ merge(Compressor.prototype, { return self; }); + // drop_side_effect_free() + // remove side-effect-free parts which only affects return value + (function(def){ + // Drop side-effect-free elements from an array of expressions. + // Returns an array of expressions with side-effects or null + // if all elements were dropped. Note: original array may be + // returned if nothing changed. + function trim(nodes, compressor, first_in_statement) { + var ret = [], changed = false; + for (var i = 0, len = nodes.length; i < len; i++) { + var node = nodes[i].drop_side_effect_free(compressor, first_in_statement); + changed |= node !== nodes[i]; + if (node) { + ret.push(node); + first_in_statement = false; + } + } + return changed ? ret.length ? ret : null : nodes; + } + + def(AST_Node, return_this); + def(AST_Constant, return_null); + def(AST_This, return_null); + def(AST_Call, function(compressor, first_in_statement){ + if (!this.has_pure_annotation(compressor) && compressor.pure_funcs(this)) { + if (this.expression instanceof AST_Function + && (!this.expression.name || !this.expression.name.definition().references.length)) { + var node = this.clone(); + node.expression = node.expression.process_expression(false, compressor); + return node; + } + return this; + } + if (this.pure) { + compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]", this.start); + this.pure.value = this.pure.value.replace(/[@#]__PURE__/g, ' '); + } + var args = trim(this.args, compressor, first_in_statement); + return args && AST_Seq.from_array(args); + }); + def(AST_Accessor, return_null); + def(AST_Function, return_null); + def(AST_Binary, function(compressor, first_in_statement){ + var right = this.right.drop_side_effect_free(compressor); + if (!right) return this.left.drop_side_effect_free(compressor, first_in_statement); + switch (this.operator) { + case "&&": + case "||": + if (right === this.right) return this; + var node = this.clone(); + node.right = right; + return node; + default: + var left = this.left.drop_side_effect_free(compressor, first_in_statement); + if (!left) return this.right.drop_side_effect_free(compressor, first_in_statement); + return make_node(AST_Seq, this, { + car: left, + cdr: right + }); + } + }); + def(AST_Assign, return_this); + def(AST_Conditional, function(compressor){ + var consequent = this.consequent.drop_side_effect_free(compressor); + var alternative = this.alternative.drop_side_effect_free(compressor); + if (consequent === this.consequent && alternative === this.alternative) return this; + if (!consequent) return alternative ? make_node(AST_Binary, this, { + operator: "||", + left: this.condition, + right: alternative + }) : this.condition.drop_side_effect_free(compressor); + if (!alternative) return make_node(AST_Binary, this, { + operator: "&&", + left: this.condition, + right: consequent + }); + var node = this.clone(); + node.consequent = consequent; + node.alternative = alternative; + return node; + }); + def(AST_Unary, function(compressor, first_in_statement){ + if (unary_side_effects(this.operator)) return this; + if (this.operator == "typeof" && this.expression instanceof AST_SymbolRef) return null; + var expression = this.expression.drop_side_effect_free(compressor, first_in_statement); + if (first_in_statement + && this instanceof AST_UnaryPrefix + && is_iife_call(expression)) { + if (expression === this.expression && this.operator.length === 1) return this; + return make_node(AST_UnaryPrefix, this, { + operator: this.operator.length === 1 ? this.operator : "!", + expression: expression + }); + } + return expression; + }); + def(AST_SymbolRef, function() { + return this.undeclared() ? this : null; + }); + def(AST_Object, function(compressor, first_in_statement){ + var values = trim(this.properties, compressor, first_in_statement); + return values && AST_Seq.from_array(values); + }); + def(AST_ObjectProperty, function(compressor, first_in_statement){ + return this.value.drop_side_effect_free(compressor, first_in_statement); + }); + def(AST_Array, function(compressor, first_in_statement){ + var values = trim(this.elements, compressor, first_in_statement); + return values && AST_Seq.from_array(values); + }); + def(AST_Dot, function(compressor, first_in_statement){ + if (this.expression.may_throw_on_access(compressor)) return this; + return this.expression.drop_side_effect_free(compressor, first_in_statement); + }); + def(AST_Sub, function(compressor, first_in_statement){ + if (this.expression.may_throw_on_access(compressor)) return this; + var expression = this.expression.drop_side_effect_free(compressor, first_in_statement); + if (!expression) return this.property.drop_side_effect_free(compressor, first_in_statement); + var property = this.property.drop_side_effect_free(compressor); + if (!property) return expression; + return make_node(AST_Seq, this, { + car: expression, + cdr: property + }); + }); + def(AST_Seq, function(compressor){ + var cdr = this.cdr.drop_side_effect_free(compressor); + if (cdr === this.cdr) return this; + if (!cdr) return this.car; + return make_node(AST_Seq, this, { + car: this.car, + cdr: cdr + }); + }); + })(function(node, func){ + node.DEFMETHOD("drop_side_effect_free", func); + }); + OPT(AST_SimpleStatement, function(self, compressor){ if (compressor.option("side_effects")) { - if (!self.body.has_side_effects(compressor)) { + var body = self.body; + var node = body.drop_side_effect_free(compressor, true); + if (!node) { compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]", self.start); return make_node(AST_EmptyStatement, self); } + if (node !== body) { + return make_node(AST_SimpleStatement, self, { body: node }); + } } return self; }); OPT(AST_DWLoop, function(self, compressor){ - var cond = self.condition.evaluate(compressor); - self.condition = cond[0]; if (!compressor.option("loops")) return self; - if (cond.length > 1) { - if (cond[1]) { + var cond = self.condition.evaluate(compressor); + if (cond !== self.condition) { + if (cond) { return make_node(AST_For, self, { body: self.body }); - } else if (self instanceof AST_While) { - if (compressor.option("dead_code")) { - var a = []; - extract_declarations_from_unreachable_code(compressor, self.body, a); - return make_node(AST_BlockStatement, self, { body: a }); - } } + if (compressor.option("dead_code") && self instanceof AST_While) { + var a = []; + extract_declarations_from_unreachable_code(compressor, self.body, a); + return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor); + } + if (self instanceof AST_Do) { + var has_loop_control = false; + var tw = new TreeWalker(function(node) { + if (node instanceof AST_Scope || has_loop_control) return true; + if (node instanceof AST_LoopControl && tw.loopcontrol_target(node) === self) + return has_loop_control = true; + }); + var parent = compressor.parent(); + (parent instanceof AST_LabeledStatement ? parent : self).walk(tw); + if (!has_loop_control) return self.body; + } + } + if (self instanceof AST_While) { + return make_node(AST_For, self, self).optimize(compressor); } return self; }); @@ -24609,7 +22064,7 @@ merge(Compressor.prototype, { var first = self.body instanceof AST_BlockStatement ? self.body.body[0] : self.body; if (first instanceof AST_If) { if (first.body instanceof AST_Break - && compressor.loopcontrol_target(first.body.label) === self) { + && compressor.loopcontrol_target(first.body) === compressor.self()) { if (self.condition) { self.condition = make_node(AST_Binary, self.condition, { left: self.condition, @@ -24622,7 +22077,7 @@ merge(Compressor.prototype, { drop_it(first.alternative); } else if (first.alternative instanceof AST_Break - && compressor.loopcontrol_target(first.alternative.label) === self) { + && compressor.loopcontrol_target(first.alternative) === compressor.self()) { if (self.condition) { self.condition = make_node(AST_Binary, self.condition, { left: self.condition, @@ -24637,38 +22092,26 @@ merge(Compressor.prototype, { } }; - OPT(AST_While, function(self, compressor) { - if (!compressor.option("loops")) return self; - self = AST_DWLoop.prototype.optimize.call(self, compressor); - if (self instanceof AST_While) { - if_break_in_loop(self, compressor); - self = make_node(AST_For, self, self).transform(compressor); - } - return self; - }); - OPT(AST_For, function(self, compressor){ - var cond = self.condition; - if (cond) { - cond = cond.evaluate(compressor); - self.condition = cond[0]; - } if (!compressor.option("loops")) return self; - if (cond) { - if (cond.length > 1 && !cond[1]) { - if (compressor.option("dead_code")) { - var a = []; - if (self.init instanceof AST_Statement) { - a.push(self.init); - } - else if (self.init) { - a.push(make_node(AST_SimpleStatement, self.init, { - body: self.init - })); - } - extract_declarations_from_unreachable_code(compressor, self.body, a); - return make_node(AST_BlockStatement, self, { body: a }); + if (self.condition) { + var cond = self.condition.evaluate(compressor); + if (compressor.option("dead_code") && !cond) { + var a = []; + if (self.init instanceof AST_Statement) { + a.push(self.init); + } + else if (self.init) { + a.push(make_node(AST_SimpleStatement, self.init, { + body: self.init + })); } + extract_declarations_from_unreachable_code(compressor, self.body, a); + return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor); + } + if (cond !== self.condition) { + cond = make_node_from_constant(cond, self.condition).transform(compressor); + self.condition = best_of_expression(cond, self.condition); } } if_break_in_loop(self, compressor); @@ -24676,15 +22119,16 @@ merge(Compressor.prototype, { }); OPT(AST_If, function(self, compressor){ + if (is_empty(self.alternative)) self.alternative = null; + if (!compressor.option("conditionals")) return self; // if condition can be statically determined, warn and drop // one of the blocks. note, statically determined implies // “has no side effects”; also it doesn't work for cases like // `x && true`, though it probably should. var cond = self.condition.evaluate(compressor); - self.condition = cond[0]; - if (cond.length > 1) { - if (cond[1]) { + if (cond !== self.condition) { + if (cond) { compressor.warn("Condition always true [{file}:{line},{col}]", self.condition.start); if (compressor.option("dead_code")) { var a = []; @@ -24692,7 +22136,7 @@ merge(Compressor.prototype, { extract_declarations_from_unreachable_code(compressor, self.alternative, a); } a.push(self.body); - return make_node(AST_BlockStatement, self, { body: a }).transform(compressor); + return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor); } } else { compressor.warn("Condition always false [{file}:{line},{col}]", self.condition.start); @@ -24700,24 +22144,29 @@ merge(Compressor.prototype, { var a = []; extract_declarations_from_unreachable_code(compressor, self.body, a); if (self.alternative) a.push(self.alternative); - return make_node(AST_BlockStatement, self, { body: a }).transform(compressor); + return make_node(AST_BlockStatement, self, { body: a }).optimize(compressor); } } + cond = make_node_from_constant(cond, self.condition).transform(compressor); + self.condition = best_of_expression(cond, self.condition); } - if (is_empty(self.alternative)) self.alternative = null; var negated = self.condition.negate(compressor); - var negated_is_best = best_of(self.condition, negated) === negated; + var self_condition_length = self.condition.print_to_string().length; + var negated_length = negated.print_to_string().length; + var negated_is_best = negated_length < self_condition_length; if (self.alternative && negated_is_best) { negated_is_best = false; // because we already do the switch here. + // no need to swap values of self_condition_length and negated_length + // here because they are only used in an equality comparison later on. self.condition = negated; var tmp = self.body; - self.body = self.alternative || make_node(AST_EmptyStatement); + self.body = self.alternative || make_node(AST_EmptyStatement, self); self.alternative = tmp; } if (is_empty(self.body) && is_empty(self.alternative)) { return make_node(AST_SimpleStatement, self.condition, { - body: self.condition - }).transform(compressor); + body: self.condition.clone() + }).optimize(compressor); } if (self.body instanceof AST_SimpleStatement && self.alternative instanceof AST_SimpleStatement) { @@ -24727,26 +22176,32 @@ merge(Compressor.prototype, { consequent : self.body.body, alternative : self.alternative.body }) - }).transform(compressor); + }).optimize(compressor); } if (is_empty(self.alternative) && self.body instanceof AST_SimpleStatement) { + if (self_condition_length === negated_length && !negated_is_best + && self.condition instanceof AST_Binary && self.condition.operator == "||") { + // although the code length of self.condition and negated are the same, + // negated does not require additional surrounding parentheses. + // see https://github.com/mishoo/UglifyJS2/issues/979 + negated_is_best = true; + } if (negated_is_best) return make_node(AST_SimpleStatement, self, { body: make_node(AST_Binary, self, { operator : "||", left : negated, right : self.body.body }) - }).transform(compressor); + }).optimize(compressor); return make_node(AST_SimpleStatement, self, { body: make_node(AST_Binary, self, { operator : "&&", left : self.condition, right : self.body.body }) - }).transform(compressor); + }).optimize(compressor); } if (self.body instanceof AST_EmptyStatement - && self.alternative && self.alternative instanceof AST_SimpleStatement) { return make_node(AST_SimpleStatement, self, { body: make_node(AST_Binary, self, { @@ -24754,7 +22209,7 @@ merge(Compressor.prototype, { left : self.condition, right : self.alternative.body }) - }).transform(compressor); + }).optimize(compressor); } if (self.body instanceof AST_Exit && self.alternative instanceof AST_Exit @@ -24762,20 +22217,23 @@ merge(Compressor.prototype, { return make_node(self.body.CTOR, self, { value: make_node(AST_Conditional, self, { condition : self.condition, - consequent : self.body.value || make_node(AST_Undefined, self.body).optimize(compressor), - alternative : self.alternative.value || make_node(AST_Undefined, self.alternative).optimize(compressor) - }) - }).transform(compressor); + consequent : self.body.value || make_node(AST_Undefined, self.body), + alternative : self.alternative.value || make_node(AST_Undefined, self.alternative) + }).transform(compressor) + }).optimize(compressor); } if (self.body instanceof AST_If && !self.body.alternative && !self.alternative) { - self.condition = make_node(AST_Binary, self.condition, { - operator: "&&", - left: self.condition, - right: self.body.condition - }).transform(compressor); - self.body = self.body.body; + self = make_node(AST_If, self, { + condition: make_node(AST_Binary, self.condition, { + operator: "&&", + left: self.condition, + right: self.body.condition + }), + body: self.body.body, + alternative: null + }); } if (aborts(self.body)) { if (self.alternative) { @@ -24783,7 +22241,7 @@ merge(Compressor.prototype, { self.alternative = null; return make_node(AST_BlockStatement, self, { body: [ self, alt ] - }).transform(compressor); + }).optimize(compressor); } } if (aborts(self.alternative)) { @@ -24793,113 +22251,118 @@ merge(Compressor.prototype, { self.alternative = null; return make_node(AST_BlockStatement, self, { body: [ self, body ] - }).transform(compressor); + }).optimize(compressor); } return self; }); OPT(AST_Switch, function(self, compressor){ - if (self.body.length == 0 && compressor.option("conditionals")) { - return make_node(AST_SimpleStatement, self, { - body: self.expression - }).transform(compressor); - } - for(;;) { - var last_branch = self.body[self.body.length - 1]; - if (last_branch) { - var stat = last_branch.body[last_branch.body.length - 1]; // last statement - if (stat instanceof AST_Break && loop_body(compressor.loopcontrol_target(stat.label)) === self) - last_branch.body.pop(); - if (last_branch instanceof AST_Default && last_branch.body.length == 0) { - self.body.pop(); + if (!compressor.option("switches")) return self; + var branch; + var value = self.expression.evaluate(compressor); + if (value !== self.expression) { + var expression = make_node_from_constant(value, self.expression).transform(compressor); + self.expression = best_of_expression(expression, self.expression); + } + if (!compressor.option("dead_code")) return self; + var decl = []; + var body = []; + var default_branch; + var exact_match; + for (var i = 0, len = self.body.length; i < len && !exact_match; i++) { + branch = self.body[i]; + if (branch instanceof AST_Default) { + if (!default_branch) { + default_branch = branch; + } else { + eliminate_branch(branch, body[body.length - 1]); + } + } else if (value !== self.expression) { + var exp = branch.expression.evaluate(compressor); + if (exp === value) { + exact_match = branch; + if (default_branch) { + var default_index = body.indexOf(default_branch); + body.splice(default_index, 1); + eliminate_branch(default_branch, body[default_index - 1]); + default_branch = null; + } + } else if (exp !== branch.expression) { + eliminate_branch(branch, body[body.length - 1]); continue; } } - break; - } - var exp = self.expression.evaluate(compressor); - out: if (exp.length == 2) try { - // constant expression - self.expression = exp[0]; - if (!compressor.option("dead_code")) break out; - var value = exp[1]; - var in_if = false; - var in_block = false; - var started = false; - var stopped = false; - var ruined = false; - var tt = new TreeTransformer(function(node, descend, in_list){ - if (node instanceof AST_Lambda || node instanceof AST_SimpleStatement) { - // no need to descend these node types - return node; - } - else if (node instanceof AST_Switch && node === self) { - node = node.clone(); - descend(node, this); - return ruined ? node : make_node(AST_BlockStatement, node, { - body: node.body.reduce(function(a, branch){ - return a.concat(branch.body); - }, []) - }).transform(compressor); - } - else if (node instanceof AST_If || node instanceof AST_Try) { - var save = in_if; - in_if = !in_block; - descend(node, this); - in_if = save; - return node; - } - else if (node instanceof AST_StatementWithBody || node instanceof AST_Switch) { - var save = in_block; - in_block = true; - descend(node, this); - in_block = save; - return node; - } - else if (node instanceof AST_Break && this.loopcontrol_target(node.label) === self) { - if (in_if) { - ruined = true; - return node; - } - if (in_block) return node; - stopped = true; - return in_list ? MAP.skip : make_node(AST_EmptyStatement, node); - } - else if (node instanceof AST_SwitchBranch && this.parent() === self) { - if (stopped) return MAP.skip; - if (node instanceof AST_Case) { - var exp = node.expression.evaluate(compressor); - if (exp.length < 2) { - // got a case with non-constant expression, baling out - throw self; - } - if (exp[1] === value || started) { - started = true; - if (aborts(node)) stopped = true; - descend(node, this); - return node; - } - return MAP.skip; - } - descend(node, this); - return node; + if (aborts(branch)) { + var prev = body[body.length - 1]; + if (aborts(prev) && prev.body.length == branch.body.length + && make_node(AST_BlockStatement, prev, prev).equivalent_to(make_node(AST_BlockStatement, branch, branch))) { + prev.body = []; } + } + body.push(branch); + } + while (i < len) eliminate_branch(self.body[i++], body[body.length - 1]); + if (body.length > 0) { + body[0].body = decl.concat(body[0].body); + } + self.body = body; + while (branch = body[body.length - 1]) { + var stat = branch.body[branch.body.length - 1]; + if (stat instanceof AST_Break && compressor.loopcontrol_target(stat) === self) + branch.body.pop(); + if (branch.body.length || branch instanceof AST_Case + && (default_branch || branch.expression.has_side_effects(compressor))) break; + if (body.pop() === default_branch) default_branch = null; + } + if (body.length == 0) { + return make_node(AST_BlockStatement, self, { + body: decl.concat(make_node(AST_SimpleStatement, self.expression, { + body: self.expression + })) + }).optimize(compressor); + } + if (body.length == 1 && (body[0] === exact_match || body[0] === default_branch)) { + var has_break = false; + var tw = new TreeWalker(function(node) { + if (has_break + || node instanceof AST_Lambda + || node instanceof AST_SimpleStatement) return true; + if (node instanceof AST_Break && tw.loopcontrol_target(node) === self) + has_break = true; }); - tt.stack = compressor.stack.slice(); // so that's able to see parent nodes - self = self.transform(tt); - } catch(ex) { - if (ex !== self) throw ex; + self.walk(tw); + if (!has_break) { + body = body[0].body.slice(); + body.unshift(make_node(AST_SimpleStatement, self.expression, { + body: self.expression + })); + return make_node(AST_BlockStatement, self, { + body: body + }).optimize(compressor); + } } return self; - }); - OPT(AST_Case, function(self, compressor){ - self.body = tighten_body(self.body, compressor); - return self; + function eliminate_branch(branch, prev) { + if (prev && !aborts(prev)) { + prev.body = prev.body.concat(branch.body); + } else { + extract_declarations_from_unreachable_code(compressor, branch, decl); + } + } }); OPT(AST_Try, function(self, compressor){ self.body = tighten_body(self.body, compressor); + if (self.bcatch && self.bfinally && all(self.bfinally.body, is_empty)) self.bfinally = null; + if (all(self.body, is_empty)) { + var body = []; + if (self.bcatch) extract_declarations_from_unreachable_code(compressor, self.bcatch, body); + if (self.bfinally) body = body.concat(self.bfinally.body); + return make_node(AST_BlockStatement, self, { + body: body + }).optimize(compressor); + } return self; }); @@ -24907,7 +22370,8 @@ merge(Compressor.prototype, { this.definitions.forEach(function(def){ def.value = null }); }); - AST_Definitions.DEFMETHOD("to_assignments", function(){ + AST_Definitions.DEFMETHOD("to_assignments", function(compressor){ + var reduce_vars = compressor.option("reduce_vars"); var assignments = this.definitions.reduce(function(a, def){ if (def.value) { var name = make_node(AST_SymbolRef, def.name, def.name); @@ -24916,6 +22380,7 @@ merge(Compressor.prototype, { left : name, right : def.value })); + if (reduce_vars) name.definition().fixed = false; } return a; }, []); @@ -24929,26 +22394,59 @@ merge(Compressor.prototype, { return self; }); - OPT(AST_Function, function(self, compressor){ - self = AST_Lambda.prototype.optimize.call(self, compressor); - if (compressor.option("unused") && !compressor.option("keep_fnames")) { - if (self.name && self.name.unreferenced()) { - self.name = null; + OPT(AST_Call, function(self, compressor){ + var exp = self.expression; + if (compressor.option("reduce_vars") + && exp instanceof AST_SymbolRef) { + var def = exp.definition(); + var fixed = exp.fixed_value(); + if (fixed instanceof AST_Defun) { + def.fixed = fixed = make_node(AST_Function, fixed, fixed).clone(true); + } + if (fixed instanceof AST_Function) { + exp = fixed; + if (compressor.option("unused") + && def.references.length == 1 + && !(def.scope.uses_arguments + && def.orig[0] instanceof AST_SymbolFunarg) + && !def.scope.uses_eval + && compressor.find_parent(AST_Scope) === def.scope) { + self.expression = exp; + } } } - return self; - }); - - OPT(AST_Call, function(self, compressor){ + if (compressor.option("unused") + && exp instanceof AST_Function + && !exp.uses_arguments + && !exp.uses_eval) { + var pos = 0, last = 0; + for (var i = 0, len = self.args.length; i < len; i++) { + var trim = i >= exp.argnames.length; + if (trim || exp.argnames[i].__unused) { + var node = self.args[i].drop_side_effect_free(compressor); + if (node) { + self.args[pos++] = node; + } else if (!trim) { + self.args[pos++] = make_node(AST_Number, self.args[i], { + value: 0 + }); + continue; + } + } else { + self.args[pos++] = self.args[i]; + } + last = pos; + } + self.args.length = last; + } if (compressor.option("unsafe")) { - var exp = self.expression; if (exp instanceof AST_SymbolRef && exp.undeclared()) { switch (exp.name) { case "Array": if (self.args.length != 1) { return make_node(AST_Array, self, { elements: self.args - }).transform(compressor); + }).optimize(compressor); } break; case "Object": @@ -24966,7 +22464,7 @@ merge(Compressor.prototype, { left: self.args[0], operator: "+", right: make_node(AST_String, self, { value: "" }) - }).transform(compressor); + }).optimize(compressor); break; case "Number": if (self.args.length == 0) return make_node(AST_Number, self, { @@ -24975,16 +22473,16 @@ merge(Compressor.prototype, { if (self.args.length == 1) return make_node(AST_UnaryPrefix, self, { expression: self.args[0], operator: "+" - }).transform(compressor); + }).optimize(compressor); case "Boolean": if (self.args.length == 0) return make_node(AST_False, self); if (self.args.length == 1) return make_node(AST_UnaryPrefix, self, { - expression: make_node(AST_UnaryPrefix, null, { + expression: make_node(AST_UnaryPrefix, self, { expression: self.args[0], operator: "!" }), operator: "!" - }).transform(compressor); + }).optimize(compressor); break; case "Function": // new Function() => function(){} @@ -25049,77 +22547,113 @@ merge(Compressor.prototype, { left: make_node(AST_String, self, { value: "" }), operator: "+", right: exp.expression - }).transform(compressor); + }).optimize(compressor); } else if (exp instanceof AST_Dot && exp.expression instanceof AST_Array && exp.property == "join") EXIT: { - var separator = self.args.length == 0 ? "," : self.args[0].evaluate(compressor)[1]; - if (separator == null) break EXIT; // not a constant - var elements = exp.expression.elements.reduce(function(a, el){ - el = el.evaluate(compressor); - if (a.length == 0 || el.length == 1) { - a.push(el); + var separator; + if (self.args.length > 0) { + separator = self.args[0].evaluate(compressor); + if (separator === self.args[0]) break EXIT; // not a constant + } + var elements = []; + var consts = []; + exp.expression.elements.forEach(function(el) { + var value = el.evaluate(compressor); + if (value !== el) { + consts.push(value); } else { - var last = a[a.length - 1]; - if (last.length == 2) { - // it's a constant - var val = "" + last[1] + separator + el[1]; - a[a.length - 1] = [ make_node_from_constant(compressor, val, last[0]), val ]; - } else { - a.push(el); + if (consts.length > 0) { + elements.push(make_node(AST_String, self, { + value: consts.join(separator) + })); + consts.length = 0; } + elements.push(el); } - return a; - }, []); + }); + if (consts.length > 0) { + elements.push(make_node(AST_String, self, { + value: consts.join(separator) + })); + } if (elements.length == 0) return make_node(AST_String, self, { value: "" }); - if (elements.length == 1) return elements[0][0]; + if (elements.length == 1) { + if (elements[0].is_string(compressor)) { + return elements[0]; + } + return make_node(AST_Binary, elements[0], { + operator : "+", + left : make_node(AST_String, self, { value: "" }), + right : elements[0] + }); + } if (separator == "") { var first; - if (elements[0][0] instanceof AST_String - || elements[1][0] instanceof AST_String) { - first = elements.shift()[0]; + if (elements[0].is_string(compressor) + || elements[1].is_string(compressor)) { + first = elements.shift(); } else { first = make_node(AST_String, self, { value: "" }); } return elements.reduce(function(prev, el){ - return make_node(AST_Binary, el[0], { + return make_node(AST_Binary, el, { operator : "+", left : prev, - right : el[0], + right : el }); - }, first).transform(compressor); + }, first).optimize(compressor); } // need this awkward cloning to not affect original element // best_of will decide which one to get through. var node = self.clone(); node.expression = node.expression.clone(); node.expression.expression = node.expression.expression.clone(); - node.expression.expression.elements = elements.map(function(el){ - return el[0]; - }); - return best_of(self, node); + node.expression.expression.elements = elements; + return best_of(compressor, self, node); + } + else if (exp instanceof AST_Dot && exp.expression.is_string(compressor) && exp.property == "charAt") { + var arg = self.args[0]; + var index = arg ? arg.evaluate(compressor) : 0; + if (index !== arg) { + return make_node(AST_Sub, exp, { + expression: exp.expression, + property: make_node_from_constant(index | 0, arg || exp) + }).optimize(compressor); + } } } - if (compressor.option("side_effects")) { - if (self.expression instanceof AST_Function - && self.args.length == 0 - && !AST_Block.prototype.has_side_effects.call(self.expression, compressor)) { - return make_node(AST_Undefined, self).transform(compressor); + if (exp instanceof AST_Function) { + if (exp.body[0] instanceof AST_Return) { + var value = exp.body[0].value; + if (!value || value.is_constant()) { + var args = self.args.concat(value || make_node(AST_Undefined, self)); + return AST_Seq.from_array(args).transform(compressor); + } + } + if (compressor.option("side_effects") && all(exp.body, is_empty)) { + var args = self.args.concat(make_node(AST_Undefined, self)); + return AST_Seq.from_array(args).transform(compressor); } } if (compressor.option("drop_console")) { - if (self.expression instanceof AST_PropAccess) { - var name = self.expression.expression; + if (exp instanceof AST_PropAccess) { + var name = exp.expression; while (name.expression) { name = name.expression; } if (name instanceof AST_SymbolRef && name.name == "console" && name.undeclared()) { - return make_node(AST_Undefined, self).transform(compressor); + return make_node(AST_Undefined, self).optimize(compressor); } } } - return self.evaluate(compressor)[0]; + if (compressor.option("negate_iife") + && compressor.parent() instanceof AST_SimpleStatement + && is_iife_call(self)) { + return self.negate(compressor, true); + } + return self; }); OPT(AST_New, function(self, compressor){ @@ -25142,40 +22676,52 @@ merge(Compressor.prototype, { OPT(AST_Seq, function(self, compressor){ if (!compressor.option("side_effects")) return self; - if (!self.car.has_side_effects(compressor)) { - // we shouldn't compress (1,func)(something) to - // func(something) because that changes the meaning of - // the func (becomes lexical instead of global). - var p = compressor.parent(); - if (!(p instanceof AST_Call && p.expression === self)) { - return self.cdr; - } - } + self.car = self.car.drop_side_effect_free(compressor, first_in_statement(compressor)); + if (!self.car) return maintain_this_binding(compressor.parent(), self, self.cdr); if (compressor.option("cascade")) { + var left; if (self.car instanceof AST_Assign && !self.car.left.has_side_effects(compressor)) { - if (self.car.left.equivalent_to(self.cdr)) { - return self.car; - } - if (self.cdr instanceof AST_Call - && self.cdr.expression.equivalent_to(self.car.left)) { - self.cdr.expression = self.car; - return self.cdr; + left = self.car.left; + } else if (self.car instanceof AST_Unary + && (self.car.operator == "++" || self.car.operator == "--")) { + left = self.car.expression; + } + if (left + && !(left instanceof AST_SymbolRef + && (left.definition().orig[0] instanceof AST_SymbolLambda + || is_reference_const(left)))) { + var parent, field; + var cdr = self.cdr; + while (true) { + if (cdr.equivalent_to(left)) { + var car = self.car instanceof AST_UnaryPostfix ? make_node(AST_UnaryPrefix, self.car, { + operator: self.car.operator, + expression: left + }) : self.car; + if (parent) { + parent[field] = car; + return self.cdr; + } + return car; + } + if (cdr instanceof AST_Binary && !(cdr instanceof AST_Assign)) { + if (cdr.left.is_constant()) { + if (cdr.operator == "||" || cdr.operator == "&&") break; + field = "right"; + } else { + field = "left"; + } + } else if (cdr instanceof AST_Call + || cdr instanceof AST_Unary && !unary_side_effects(cdr.operator)) { + field = "expression"; + } else break; + parent = cdr; + cdr = cdr[field]; } } - if (!self.car.has_side_effects(compressor) - && !self.cdr.has_side_effects(compressor) - && self.car.equivalent_to(self.cdr)) { - return self.car; - } } - if (self.cdr instanceof AST_UnaryPrefix - && self.cdr.operator == "void" - && !self.cdr.expression.has_side_effects(compressor)) { - self.cdr.expression = self.car; - return self.cdr; - } - if (self.cdr instanceof AST_Undefined) { + if (is_undefined(self.cdr, compressor)) { return make_node(AST_UnaryPrefix, self, { operator : "void", expression : self.car @@ -25189,8 +22735,9 @@ merge(Compressor.prototype, { if (this.expression instanceof AST_Seq) { var seq = this.expression; var x = seq.to_array(); - this.expression = x.pop(); - x.push(this); + var e = this.clone(); + e.expression = x.pop(); + x.push(e); seq = AST_Seq.from_array(x).transform(compressor); return seq; } @@ -25203,8 +22750,36 @@ merge(Compressor.prototype, { }); OPT(AST_UnaryPrefix, function(self, compressor){ - self = self.lift_sequences(compressor); var e = self.expression; + if (self.operator == "delete" + && !(e instanceof AST_SymbolRef + || e instanceof AST_PropAccess + || e instanceof AST_NaN + || e instanceof AST_Infinity + || e instanceof AST_Undefined)) { + if (e instanceof AST_Seq) { + e = e.to_array(); + e.push(make_node(AST_True, self)); + return AST_Seq.from_array(e).optimize(compressor); + } + return make_node(AST_Seq, self, { + car: e, + cdr: make_node(AST_True, self) + }).optimize(compressor); + } + var seq = self.lift_sequences(compressor); + if (seq !== self) { + return seq; + } + if (compressor.option("side_effects") && self.operator == "void") { + e = e.drop_side_effect_free(compressor); + if (e) { + self.expression = e; + return self; + } else { + return make_node(AST_Undefined, self).optimize(compressor); + } + } if (compressor.option("booleans") && compressor.in_boolean_context()) { switch (self.operator) { case "!": @@ -25212,47 +22787,73 @@ merge(Compressor.prototype, { // !!foo ==> foo, if we're in boolean context return e.expression; } + if (e instanceof AST_Binary) { + self = best_of(compressor, self, e.negate(compressor, first_in_statement(compressor))); + } break; case "typeof": // typeof always returns a non-empty string, thus it's // always true in booleans compressor.warn("Boolean expression always true [{file}:{line},{col}]", self.start); - return make_node(AST_True, self); - } - if (e instanceof AST_Binary && self.operator == "!") { - self = best_of(self, e.negate(compressor)); + return (e instanceof AST_SymbolRef ? make_node(AST_True, self) : make_node(AST_Seq, self, { + car: e, + cdr: make_node(AST_True, self) + })).optimize(compressor); + } + } + if (self.operator == "-" && e instanceof AST_Infinity) { + e = e.transform(compressor); + } + if (e instanceof AST_Binary + && (self.operator == "+" || self.operator == "-") + && (e.operator == "*" || e.operator == "/" || e.operator == "%")) { + return make_node(AST_Binary, self, { + operator: e.operator, + left: make_node(AST_UnaryPrefix, e.left, { + operator: self.operator, + expression: e.left + }), + right: e.right + }); + } + // avoids infinite recursion of numerals + if (self.operator != "-" + || !(e instanceof AST_Number || e instanceof AST_Infinity)) { + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); } } - return self.evaluate(compressor)[0]; + return self; }); - function has_side_effects_or_prop_access(node, compressor) { - var save_pure_getters = compressor.option("pure_getters"); - compressor.options.pure_getters = false; - var ret = node.has_side_effects(compressor); - compressor.options.pure_getters = save_pure_getters; - return ret; - } - AST_Binary.DEFMETHOD("lift_sequences", function(compressor){ if (compressor.option("sequences")) { if (this.left instanceof AST_Seq) { var seq = this.left; var x = seq.to_array(); - this.left = x.pop(); - x.push(this); - seq = AST_Seq.from_array(x).transform(compressor); - return seq; + var e = this.clone(); + e.left = x.pop(); + x.push(e); + return AST_Seq.from_array(x).optimize(compressor); } - if (this.right instanceof AST_Seq - && this instanceof AST_Assign - && !has_side_effects_or_prop_access(this.left, compressor)) { - var seq = this.right; - var x = seq.to_array(); - this.right = x.pop(); - x.push(this); - seq = AST_Seq.from_array(x).transform(compressor); - return seq; + if (this.right instanceof AST_Seq && !this.left.has_side_effects(compressor)) { + var assign = this.operator == "=" && this.left instanceof AST_SymbolRef; + var root = this.right.clone(); + var cursor, seq = root; + while (assign || !seq.car.has_side_effects(compressor)) { + cursor = seq; + if (seq.cdr instanceof AST_Seq) { + seq = seq.cdr = seq.cdr.clone(); + } else break; + } + if (cursor) { + var e = this.clone(); + e.right = cursor.cdr; + cursor.cdr = e; + return root.optimize(compressor); + } } } return this; @@ -25261,8 +22862,14 @@ merge(Compressor.prototype, { var commutativeOperators = makePredicate("== === != !== * & | ^"); OPT(AST_Binary, function(self, compressor){ - function reverse(op, force) { - if (force || !(self.left.has_side_effects(compressor) || self.right.has_side_effects(compressor))) { + function reversible() { + return self.left.is_constant() + || self.right.is_constant() + || !self.left.has_side_effects(compressor) + && !self.right.has_side_effects(compressor); + } + function reverse(op) { + if (reversible()) { if (op) self.operator = op; var tmp = self.left; self.left = self.right; @@ -25270,41 +22877,15 @@ merge(Compressor.prototype, { } } if (commutativeOperators(self.operator)) { - if (self.right instanceof AST_Constant - && !(self.left instanceof AST_Constant)) { + if (self.right.is_constant() + && !self.left.is_constant()) { // if right is a constant, whatever side effects the // left side might have could not influence the // result. hence, force switch. if (!(self.left instanceof AST_Binary && PRECEDENCE[self.left.operator] >= PRECEDENCE[self.operator])) { - reverse(null, true); - } - } - if (/^[!=]==?$/.test(self.operator)) { - if (self.left instanceof AST_SymbolRef && self.right instanceof AST_Conditional) { - if (self.right.consequent instanceof AST_SymbolRef - && self.right.consequent.definition() === self.left.definition()) { - if (/^==/.test(self.operator)) return self.right.condition; - if (/^!=/.test(self.operator)) return self.right.condition.negate(compressor); - } - if (self.right.alternative instanceof AST_SymbolRef - && self.right.alternative.definition() === self.left.definition()) { - if (/^==/.test(self.operator)) return self.right.condition.negate(compressor); - if (/^!=/.test(self.operator)) return self.right.condition; - } - } - if (self.right instanceof AST_SymbolRef && self.left instanceof AST_Conditional) { - if (self.left.consequent instanceof AST_SymbolRef - && self.left.consequent.definition() === self.right.definition()) { - if (/^==/.test(self.operator)) return self.left.condition; - if (/^!=/.test(self.operator)) return self.left.condition.negate(compressor); - } - if (self.left.alternative instanceof AST_SymbolRef - && self.left.alternative.definition() === self.right.definition()) { - if (/^==/.test(self.operator)) return self.left.condition.negate(compressor); - if (/^!=/.test(self.operator)) return self.left.condition; - } + reverse(); } } } @@ -25313,126 +22894,135 @@ merge(Compressor.prototype, { case "===": case "!==": if ((self.left.is_string(compressor) && self.right.is_string(compressor)) || + (self.left.is_number(compressor) && self.right.is_number(compressor)) || (self.left.is_boolean() && self.right.is_boolean())) { self.operator = self.operator.substr(0, 2); } // XXX: intentionally falling down to the next case case "==": case "!=": + // "undefined" == typeof x => undefined === x if (self.left instanceof AST_String && self.left.value == "undefined" && self.right instanceof AST_UnaryPrefix - && self.right.operator == "typeof" - && compressor.option("unsafe")) { - if (!(self.right.expression instanceof AST_SymbolRef) - || !self.right.expression.undeclared()) { - self.right = self.right.expression; + && self.right.operator == "typeof") { + var expr = self.right.expression; + if (expr instanceof AST_SymbolRef ? !expr.undeclared() + : !(expr instanceof AST_PropAccess) || compressor.option("screw_ie8")) { + self.right = expr; self.left = make_node(AST_Undefined, self.left).optimize(compressor); if (self.operator.length == 2) self.operator += "="; } } break; } - if (compressor.option("conditionals")) { - if (self.operator == "&&") { - var ll = self.left.evaluate(compressor); - if (ll.length > 1) { - if (ll[1]) { - compressor.warn("Condition left of && always true [{file}:{line},{col}]", self.start); - var rr = self.right.evaluate(compressor); - return rr[0]; - } else { - compressor.warn("Condition left of && always false [{file}:{line},{col}]", self.start); - return ll[0]; - } - } - } - else if (self.operator == "||") { - var ll = self.left.evaluate(compressor); - if (ll.length > 1) { - if (ll[1]) { - compressor.warn("Condition left of || always true [{file}:{line},{col}]", self.start); - return ll[0]; - } else { - compressor.warn("Condition left of || always false [{file}:{line},{col}]", self.start); - var rr = self.right.evaluate(compressor); - return rr[0]; - } - } - } - } - if (compressor.option("booleans") && compressor.in_boolean_context()) switch (self.operator) { - case "&&": - var ll = self.left.evaluate(compressor); - var rr = self.right.evaluate(compressor); - if ((ll.length > 1 && !ll[1]) || (rr.length > 1 && !rr[1])) { - compressor.warn("Boolean && always false [{file}:{line},{col}]", self.start); - if (self.left.has_side_effects(compressor)) { - return make_node(AST_Seq, self, { - car: self.left, - cdr: make_node(AST_False) - }).optimize(compressor); - } - return make_node(AST_False, self); - } - if (ll.length > 1 && ll[1]) { - return rr[0]; - } - if (rr.length > 1 && rr[1]) { - return ll[0]; - } - break; - case "||": + if (compressor.option("booleans") && self.operator == "+" && compressor.in_boolean_context()) { var ll = self.left.evaluate(compressor); var rr = self.right.evaluate(compressor); - if ((ll.length > 1 && ll[1]) || (rr.length > 1 && rr[1])) { - compressor.warn("Boolean || always true [{file}:{line},{col}]", self.start); - if (self.left.has_side_effects(compressor)) { - return make_node(AST_Seq, self, { - car: self.left, - cdr: make_node(AST_True) - }).optimize(compressor); - } - return make_node(AST_True, self); - } - if (ll.length > 1 && !ll[1]) { - return rr[0]; - } - if (rr.length > 1 && !rr[1]) { - return ll[0]; + if (ll && typeof ll == "string") { + compressor.warn("+ in boolean context always true [{file}:{line},{col}]", self.start); + return make_node(AST_Seq, self, { + car: self.right, + cdr: make_node(AST_True, self) + }).optimize(compressor); } - break; - case "+": - var ll = self.left.evaluate(compressor); - var rr = self.right.evaluate(compressor); - if ((ll.length > 1 && ll[0] instanceof AST_String && ll[1]) || - (rr.length > 1 && rr[0] instanceof AST_String && rr[1])) { + if (rr && typeof rr == "string") { compressor.warn("+ in boolean context always true [{file}:{line},{col}]", self.start); - return make_node(AST_True, self); + return make_node(AST_Seq, self, { + car: self.left, + cdr: make_node(AST_True, self) + }).optimize(compressor); } - break; } if (compressor.option("comparisons") && self.is_boolean()) { if (!(compressor.parent() instanceof AST_Binary) || compressor.parent() instanceof AST_Assign) { var negated = make_node(AST_UnaryPrefix, self, { operator: "!", - expression: self.negate(compressor) + expression: self.negate(compressor, first_in_statement(compressor)) }); - self = best_of(self, negated); + self = best_of(compressor, self, negated); } - switch (self.operator) { - case "<": reverse(">"); break; - case "<=": reverse(">="); break; + if (compressor.option("unsafe_comps")) { + switch (self.operator) { + case "<": reverse(">"); break; + case "<=": reverse(">="); break; + } } } - if (self.operator == "+" && self.right instanceof AST_String - && self.right.getValue() === "" && self.left instanceof AST_Binary - && self.left.operator == "+" && self.left.is_string(compressor)) { - return self.left; + if (self.operator == "+") { + if (self.right instanceof AST_String + && self.right.getValue() == "" + && self.left.is_string(compressor)) { + return self.left; + } + if (self.left instanceof AST_String + && self.left.getValue() == "" + && self.right.is_string(compressor)) { + return self.right; + } + if (self.left instanceof AST_Binary + && self.left.operator == "+" + && self.left.left instanceof AST_String + && self.left.left.getValue() == "" + && self.right.is_string(compressor)) { + self.left = self.left.right; + return self.transform(compressor); + } } if (compressor.option("evaluate")) { - if (self.operator == "+") { + switch (self.operator) { + case "&&": + var ll = self.left.evaluate(compressor); + if (!ll) { + compressor.warn("Condition left of && always false [{file}:{line},{col}]", self.start); + return maintain_this_binding(compressor.parent(), self, self.left).optimize(compressor); + } else if (ll !== self.left) { + compressor.warn("Condition left of && always true [{file}:{line},{col}]", self.start); + return maintain_this_binding(compressor.parent(), self, self.right).optimize(compressor); + } + if (compressor.option("booleans") && compressor.in_boolean_context()) { + var rr = self.right.evaluate(compressor); + if (!rr) { + compressor.warn("Boolean && always false [{file}:{line},{col}]", self.start); + return make_node(AST_Seq, self, { + car: self.left, + cdr: make_node(AST_False, self) + }).optimize(compressor); + } else if (rr !== self.right) { + compressor.warn("Dropping side-effect-free && in boolean context [{file}:{line},{col}]", self.start); + return self.left.optimize(compressor); + } + } + break; + case "||": + var ll = self.left.evaluate(compressor); + if (!ll) { + compressor.warn("Condition left of || always false [{file}:{line},{col}]", self.start); + return maintain_this_binding(compressor.parent(), self, self.right).optimize(compressor); + } else if (ll !== self.left) { + compressor.warn("Condition left of || always true [{file}:{line},{col}]", self.start); + return maintain_this_binding(compressor.parent(), self, self.left).optimize(compressor); + } + if (compressor.option("booleans") && compressor.in_boolean_context()) { + var rr = self.right.evaluate(compressor); + if (!rr) { + compressor.warn("Dropping side-effect-free || in boolean context [{file}:{line},{col}]", self.start); + return self.left.optimize(compressor); + } else if (rr !== self.right) { + compressor.warn("Boolean || always true [{file}:{line},{col}]", self.start); + return make_node(AST_Seq, self, { + car: self.left, + cdr: make_node(AST_True, self) + }).optimize(compressor); + } + } + break; + } + var associative = true; + switch (self.operator) { + case "+": + // "foo" + ("bar" + x) => "foobar" + x if (self.left instanceof AST_Constant && self.right instanceof AST_Binary && self.right.operator == "+" @@ -25440,7 +23030,7 @@ merge(Compressor.prototype, { && self.right.is_string(compressor)) { self = make_node(AST_Binary, self, { operator: "+", - left: make_node(AST_String, null, { + left: make_node(AST_String, self.left, { value: "" + self.left.getValue() + self.right.left.getValue(), start: self.left.start, end: self.right.left.end @@ -25448,6 +23038,7 @@ merge(Compressor.prototype, { right: self.right.right }); } + // (x + "foo") + "bar" => x + "foobar" if (self.right instanceof AST_Constant && self.left instanceof AST_Binary && self.left.operator == "+" @@ -25456,13 +23047,14 @@ merge(Compressor.prototype, { self = make_node(AST_Binary, self, { operator: "+", left: self.left.left, - right: make_node(AST_String, null, { + right: make_node(AST_String, self.right, { value: "" + self.left.right.getValue() + self.right.getValue(), start: self.left.right.start, end: self.right.end }) }); } + // (x + "foo") + ("bar" + y) => (x + "foobar") + y if (self.left instanceof AST_Binary && self.left.operator == "+" && self.left.is_string(compressor) @@ -25476,7 +23068,7 @@ merge(Compressor.prototype, { left: make_node(AST_Binary, self.left, { operator: "+", left: self.left.left, - right: make_node(AST_String, null, { + right: make_node(AST_String, self.left.right, { value: "" + self.left.right.getValue() + self.right.left.getValue(), start: self.left.right.start, end: self.right.left.end @@ -25485,13 +23077,138 @@ merge(Compressor.prototype, { right: self.right.right }); } + // a + -b => a - b + if (self.right instanceof AST_UnaryPrefix + && self.right.operator == "-" + && self.left.is_number(compressor)) { + self = make_node(AST_Binary, self, { + operator: "-", + left: self.left, + right: self.right.expression + }); + break; + } + // -a + b => b - a + if (self.left instanceof AST_UnaryPrefix + && self.left.operator == "-" + && reversible() + && self.right.is_number(compressor)) { + self = make_node(AST_Binary, self, { + operator: "-", + left: self.right, + right: self.left.expression + }); + break; + } + case "*": + associative = compressor.option("unsafe_math"); + case "&": + case "|": + case "^": + // a + +b => +b + a + if (self.left.is_number(compressor) + && self.right.is_number(compressor) + && reversible() + && !(self.left instanceof AST_Binary + && self.left.operator != self.operator + && PRECEDENCE[self.left.operator] >= PRECEDENCE[self.operator])) { + var reversed = make_node(AST_Binary, self, { + operator: self.operator, + left: self.right, + right: self.left + }); + if (self.right instanceof AST_Constant + && !(self.left instanceof AST_Constant)) { + self = best_of(compressor, reversed, self); + } else { + self = best_of(compressor, self, reversed); + } + } + if (associative && self.is_number(compressor)) { + // a + (b + c) => (a + b) + c + if (self.right instanceof AST_Binary + && self.right.operator == self.operator) { + self = make_node(AST_Binary, self, { + operator: self.operator, + left: make_node(AST_Binary, self.left, { + operator: self.operator, + left: self.left, + right: self.right.left, + start: self.left.start, + end: self.right.left.end + }), + right: self.right.right + }); + } + // (n + 2) + 3 => 5 + n + // (2 * n) * 3 => 6 + n + if (self.right instanceof AST_Constant + && self.left instanceof AST_Binary + && self.left.operator == self.operator) { + if (self.left.left instanceof AST_Constant) { + self = make_node(AST_Binary, self, { + operator: self.operator, + left: make_node(AST_Binary, self.left, { + operator: self.operator, + left: self.left.left, + right: self.right, + start: self.left.left.start, + end: self.right.end + }), + right: self.left.right + }); + } else if (self.left.right instanceof AST_Constant) { + self = make_node(AST_Binary, self, { + operator: self.operator, + left: make_node(AST_Binary, self.left, { + operator: self.operator, + left: self.left.right, + right: self.right, + start: self.left.right.start, + end: self.right.end + }), + right: self.left.left + }); + } + } + // (a | 1) | (2 | d) => (3 | a) | b + if (self.left instanceof AST_Binary + && self.left.operator == self.operator + && self.left.right instanceof AST_Constant + && self.right instanceof AST_Binary + && self.right.operator == self.operator + && self.right.left instanceof AST_Constant) { + self = make_node(AST_Binary, self, { + operator: self.operator, + left: make_node(AST_Binary, self.left, { + operator: self.operator, + left: make_node(AST_Binary, self.left.left, { + operator: self.operator, + left: self.left.right, + right: self.right.left, + start: self.left.right.start, + end: self.right.left.end + }), + right: self.left.left + }), + right: self.right.right + }); + } + } } } // x && (y && z) ==> x && y && z // x || (y || z) ==> x || y || z + // x + ("y" + z) ==> x + "y" + z + // "x" + (y + "z")==> "x" + y + "z" if (self.right instanceof AST_Binary && self.right.operator == self.operator - && (self.operator == "&&" || self.operator == "||")) + && (self.operator == "&&" + || self.operator == "||" + || (self.operator == "+" + && (self.right.left.is_string(compressor) + || (self.left.is_string(compressor) + && self.right.right.is_string(compressor)))))) { self.left = make_node(AST_Binary, self.left, { operator : self.operator, @@ -25501,71 +23218,166 @@ merge(Compressor.prototype, { self.right = self.right.right; return self.transform(compressor); } - return self.evaluate(compressor)[0]; + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); + } + return self; }); OPT(AST_SymbolRef, function(self, compressor){ - function isLHS(symbol, parent) { - return ( - parent instanceof AST_Binary && - parent.operator === '=' && - parent.left === symbol - ); - } - - if (self.undeclared() && !isLHS(self, compressor.parent())) { - var defines = compressor.option("global_defs"); - if (defines && defines.hasOwnProperty(self.name)) { - return make_node_from_constant(compressor, defines[self.name], self); - } + var def = self.resolve_defines(compressor); + if (def) { + return def.optimize(compressor); + } + // testing against !self.scope.uses_with first is an optimization + if (compressor.option("screw_ie8") + && self.undeclared() + && (!self.scope.uses_with || !compressor.find_parent(AST_With))) { switch (self.name) { case "undefined": - return make_node(AST_Undefined, self); + return make_node(AST_Undefined, self).optimize(compressor); case "NaN": - return make_node(AST_NaN, self).transform(compressor); + return make_node(AST_NaN, self).optimize(compressor); case "Infinity": - return make_node(AST_Infinity, self).transform(compressor); + return make_node(AST_Infinity, self).optimize(compressor); + } + } + if (compressor.option("evaluate") + && compressor.option("reduce_vars") + && is_lhs(self, compressor.parent()) !== self) { + var d = self.definition(); + var fixed = self.fixed_value(); + if (fixed) { + if (d.should_replace === undefined) { + var init = fixed.evaluate(compressor); + if (init !== fixed && (compressor.option("unsafe_regexp") || !(init instanceof RegExp))) { + init = make_node_from_constant(init, fixed); + var value = init.optimize(compressor).print_to_string().length; + var fn; + if (has_symbol_ref(fixed)) { + fn = function() { + var result = init.optimize(compressor); + return result === init ? result.clone(true) : result; + }; + } else { + value = Math.min(value, fixed.print_to_string().length); + fn = function() { + var result = best_of_expression(init.optimize(compressor), fixed); + return result === init || result === fixed ? result.clone(true) : result; + }; + } + var name = d.name.length; + var overhead = 0; + if (compressor.option("unused") && (!d.global || compressor.option("toplevel"))) { + overhead = (name + 2 + value) / d.references.length; + } + d.should_replace = value <= name + overhead ? fn : false; + } else { + d.should_replace = false; + } + } + if (d.should_replace) { + return d.should_replace(); + } } } return self; - }); - OPT(AST_Infinity, function (self, compressor) { - return make_node(AST_Binary, self, { - operator : '/', - left : make_node(AST_Number, self, {value: 1}), - right : make_node(AST_Number, self, {value: 0}) - }); + function has_symbol_ref(value) { + var found; + value.walk(new TreeWalker(function(node) { + if (node instanceof AST_SymbolRef) found = true; + if (found) return true; + })); + return found; + } }); + function is_atomic(lhs, self) { + return lhs instanceof AST_SymbolRef || lhs.TYPE === self.TYPE; + } + OPT(AST_Undefined, function(self, compressor){ if (compressor.option("unsafe")) { - var scope = compressor.find_parent(AST_Scope); - var undef = scope.find_variable("undefined"); + var undef = find_variable(compressor, "undefined"); if (undef) { var ref = make_node(AST_SymbolRef, self, { name : "undefined", - scope : scope, + scope : undef.scope, thedef : undef }); - ref.reference(); + ref.is_undefined = true; return ref; } } + var lhs = is_lhs(compressor.self(), compressor.parent()); + if (lhs && is_atomic(lhs, self)) return self; + return make_node(AST_UnaryPrefix, self, { + operator: "void", + expression: make_node(AST_Number, self, { + value: 0 + }) + }); + }); + + OPT(AST_Infinity, function(self, compressor){ + var lhs = is_lhs(compressor.self(), compressor.parent()); + if (lhs && is_atomic(lhs, self)) return self; + if (compressor.option("keep_infinity") + && !(lhs && !is_atomic(lhs, self)) + && !find_variable(compressor, "Infinity")) + return self; + return make_node(AST_Binary, self, { + operator: "/", + left: make_node(AST_Number, self, { + value: 1 + }), + right: make_node(AST_Number, self, { + value: 0 + }) + }); + }); + + OPT(AST_NaN, function(self, compressor){ + var lhs = is_lhs(compressor.self(), compressor.parent()); + if (lhs && !is_atomic(lhs, self) + || find_variable(compressor, "NaN")) { + return make_node(AST_Binary, self, { + operator: "/", + left: make_node(AST_Number, self, { + value: 0 + }), + right: make_node(AST_Number, self, { + value: 0 + }) + }); + } return self; }); var ASSIGN_OPS = [ '+', '-', '/', '*', '%', '>>', '<<', '>>>', '|', '^', '&' ]; + var ASSIGN_OPS_COMMUTATIVE = [ '*', '|', '^', '&' ]; OPT(AST_Assign, function(self, compressor){ self = self.lift_sequences(compressor); - if (self.operator == "=" - && self.left instanceof AST_SymbolRef - && self.right instanceof AST_Binary - && self.right.left instanceof AST_SymbolRef - && self.right.left.name == self.left.name - && member(self.right.operator, ASSIGN_OPS)) { - self.operator = self.right.operator + "="; - self.right = self.right.right; + if (self.operator == "=" && self.left instanceof AST_SymbolRef && self.right instanceof AST_Binary) { + // x = expr1 OP expr2 + if (self.right.left instanceof AST_SymbolRef + && self.right.left.name == self.left.name + && member(self.right.operator, ASSIGN_OPS)) { + // x = x - 2 ---> x -= 2 + self.operator = self.right.operator + "="; + self.right = self.right.right; + } + else if (self.right.right instanceof AST_SymbolRef + && self.right.right.name == self.left.name + && member(self.right.operator, ASSIGN_OPS_COMMUTATIVE) + && !self.right.left.has_side_effects(compressor)) { + // x = 2 & x ---> x &= 2 + self.operator = self.right.operator + "="; + self.right = self.right.left; + } } return self; }); @@ -25578,37 +23390,47 @@ merge(Compressor.prototype, { return AST_Seq.cons(car, self); } var cond = self.condition.evaluate(compressor); - if (cond.length > 1) { - if (cond[1]) { + if (cond !== self.condition) { + if (cond) { compressor.warn("Condition always true [{file}:{line},{col}]", self.start); - return self.consequent; + return maintain_this_binding(compressor.parent(), self, self.consequent); } else { compressor.warn("Condition always false [{file}:{line},{col}]", self.start); - return self.alternative; + return maintain_this_binding(compressor.parent(), self, self.alternative); } } - var negated = cond[0].negate(compressor); - if (best_of(cond[0], negated) === negated) { + var negated = cond.negate(compressor, first_in_statement(compressor)); + if (best_of(compressor, cond, negated) === negated) { self = make_node(AST_Conditional, self, { condition: negated, consequent: self.alternative, alternative: self.consequent }); } + var condition = self.condition; var consequent = self.consequent; var alternative = self.alternative; + // x?x:y --> x||y + if (condition instanceof AST_SymbolRef + && consequent instanceof AST_SymbolRef + && condition.definition() === consequent.definition()) { + return make_node(AST_Binary, self, { + operator: "||", + left: condition, + right: alternative + }); + } + // if (foo) exp = something; else exp = something_else; + // | + // v + // exp = foo ? something : something_else; if (consequent instanceof AST_Assign && alternative instanceof AST_Assign && consequent.operator == alternative.operator && consequent.left.equivalent_to(alternative.left) - && !consequent.left.has_side_effects(compressor) - ) { - /* - * Stuff like this: - * if (foo) exp = something; else exp = something_else; - * ==> - * exp = foo ? something : something_else; - */ + && (!self.condition.has_side_effects(compressor) + || consequent.operator == "=" + && !consequent.left.has_side_effects(compressor))) { return make_node(AST_Assign, self, { operator: consequent.operator, left: consequent.left, @@ -25619,25 +23441,19 @@ merge(Compressor.prototype, { }) }); } + // x ? y(a) : y(b) --> y(x ? a : b) if (consequent instanceof AST_Call && alternative.TYPE === consequent.TYPE - && consequent.args.length == alternative.args.length - && !consequent.expression.has_side_effects(compressor) - && consequent.expression.equivalent_to(alternative.expression)) { - if (consequent.args.length == 0) { - return make_node(AST_Seq, self, { - car: self.condition, - cdr: consequent - }); - } - if (consequent.args.length == 1) { - consequent.args[0] = make_node(AST_Conditional, self, { - condition: self.condition, - consequent: consequent.args[0], - alternative: alternative.args[0] - }); - return consequent; - } + && consequent.args.length == 1 + && alternative.args.length == 1 + && consequent.expression.equivalent_to(alternative.expression) + && !consequent.expression.has_side_effects(compressor)) { + consequent.args[0] = make_node(AST_Conditional, self, { + condition: self.condition, + consequent: consequent.args[0], + alternative: alternative.args[0] + }); + return consequent; } // x?y?z:a:a --> x&&y?z:a if (consequent instanceof AST_Conditional @@ -25652,32 +23468,82 @@ merge(Compressor.prototype, { alternative: alternative }); } - // x=y?1:1 --> x=1 - if (consequent instanceof AST_Constant - && alternative instanceof AST_Constant - && consequent.equivalent_to(alternative)) { - if (self.condition.has_side_effects(compressor)) { - return AST_Seq.from_array([self.condition, make_node_from_constant(compressor, consequent.value, self)]); - } else { - return make_node_from_constant(compressor, consequent.value, self); + // x ? y : y --> x, y + if (consequent.equivalent_to(alternative)) { + return make_node(AST_Seq, self, { + car: self.condition, + cdr: consequent + }).optimize(compressor); + } + if (is_true(self.consequent)) { + if (is_false(self.alternative)) { + // c ? true : false ---> !!c + return booleanize(self.condition); } + // c ? true : x ---> !!c || x + return make_node(AST_Binary, self, { + operator: "||", + left: booleanize(self.condition), + right: self.alternative + }); } - // x=y?true:false --> x=!!y - if (consequent instanceof AST_True - && alternative instanceof AST_False) { - self.condition = self.condition.negate(compressor); - return make_node(AST_UnaryPrefix, self.condition, { - operator: "!", - expression: self.condition + if (is_false(self.consequent)) { + if (is_true(self.alternative)) { + // c ? false : true ---> !c + return booleanize(self.condition.negate(compressor)); + } + // c ? false : x ---> !c && x + return make_node(AST_Binary, self, { + operator: "&&", + left: booleanize(self.condition.negate(compressor)), + right: self.alternative + }); + } + if (is_true(self.alternative)) { + // c ? x : true ---> !c || x + return make_node(AST_Binary, self, { + operator: "||", + left: booleanize(self.condition.negate(compressor)), + right: self.consequent }); } - // x=y?false:true --> x=!y - if (consequent instanceof AST_False - && alternative instanceof AST_True) { - return self.condition.negate(compressor) + if (is_false(self.alternative)) { + // c ? x : false ---> !!c && x + return make_node(AST_Binary, self, { + operator: "&&", + left: booleanize(self.condition), + right: self.consequent + }); } + return self; + + function booleanize(node) { + if (node.is_boolean()) return node; + // !!expression + return make_node(AST_UnaryPrefix, node, { + operator: "!", + expression: node.negate(compressor) + }); + } + + // AST_True or !0 + function is_true(node) { + return node instanceof AST_True + || (node instanceof AST_UnaryPrefix + && node.operator == "!" + && node.expression instanceof AST_Constant + && !node.expression.value); + } + // AST_False or !1 + function is_false(node) { + return node instanceof AST_False + || (node instanceof AST_UnaryPrefix + && node.operator == "!" + && node.expression instanceof AST_Constant + && !!node.expression.value); + } }); OPT(AST_Boolean, function(self, compressor){ @@ -25723,10 +23589,19 @@ merge(Compressor.prototype, { }); } } + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); + } return self; }); OPT(AST_Dot, function(self, compressor){ + var def = self.resolve_defines(compressor); + if (def) { + return def.optimize(compressor); + } var prop = self.property; if (RESERVED_WORDS(prop) && !compressor.option("screw_ie8")) { return make_node(AST_Sub, self, { @@ -25736,12 +23611,42 @@ merge(Compressor.prototype, { }) }).optimize(compressor); } - return self.evaluate(compressor)[0]; + if (compressor.option("unsafe_proto") + && self.expression instanceof AST_Dot + && self.expression.property == "prototype") { + var exp = self.expression.expression; + if (exp instanceof AST_SymbolRef && exp.undeclared()) switch (exp.name) { + case "Array": + self.expression = make_node(AST_Array, self.expression, { + elements: [] + }); + break; + case "Object": + self.expression = make_node(AST_Object, self.expression, { + properties: [] + }); + break; + case "String": + self.expression = make_node(AST_String, self.expression, { + value: "" + }); + break; + } + } + var ev = self.evaluate(compressor); + if (ev !== self) { + ev = make_node_from_constant(ev, self).optimize(compressor); + return best_of(compressor, ev, self); + } + return self; }); function literals_in_boolean_context(self, compressor) { - if (compressor.option("booleans") && compressor.in_boolean_context() && !self.has_side_effects(compressor)) { - return make_node(AST_True, self); + if (compressor.option("booleans") && compressor.in_boolean_context()) { + return best_of(compressor, self, make_node(AST_Seq, self, { + car: self, + cdr: make_node(AST_True, self) + }).optimize(compressor)); } return self; }; @@ -25750,12 +23655,20 @@ merge(Compressor.prototype, { OPT(AST_RegExp, literals_in_boolean_context); OPT(AST_Return, function(self, compressor){ - if (self.value instanceof AST_Undefined) { + if (self.value && is_undefined(self.value, compressor)) { self.value = null; } return self; }); + OPT(AST_VarDef, function(self, compressor){ + var defines = compressor.option("global_defs"); + if (defines && HOP(defines, self.name.name)) { + compressor.warn('global_defs ' + self.name.name + ' redefined [{file}:{line},{col}]', self.start); + } + return self; + }); + })(); /*********************************************************************** @@ -25813,16 +23726,21 @@ function SourceMap(options) { orig_line_diff : 0, dest_line_diff : 0, }); + var generator = new MOZ_SourceMap.SourceMapGenerator({ + file : options.file, + sourceRoot : options.root + }); var orig_map = options.orig && new MOZ_SourceMap.SourceMapConsumer(options.orig); - var generator; - if (orig_map) { - generator = MOZ_SourceMap.SourceMapGenerator.fromSourceMap(orig_map); - } else { - generator = new MOZ_SourceMap.SourceMapGenerator({ - file : options.file, - sourceRoot : options.root + + if (orig_map && Array.isArray(options.orig.sources)) { + orig_map._sources.toArray().forEach(function(source) { + var sourceContent = orig_map.sourceContentFor(source, true); + if (sourceContent) { + generator.setSourceContent(source, sourceContent); + } }); } + function add(source, gen_line, gen_col, orig_line, orig_col, name) { if (orig_map) { var info = orig_map.originalPositionFor({ @@ -25843,7 +23761,7 @@ function SourceMap(options) { source : source, name : name }); - } + }; return { add : add, get : function() { return generator }, @@ -25898,20 +23816,55 @@ function SourceMap(options) { (function(){ - var MOZ_TO_ME = { - ExpressionStatement: function(M) { - var expr = M.expression; - if (expr.type === "Literal" && typeof expr.value === "string") { - return new AST_Directive({ - start: my_start_token(M), - end: my_end_token(M), - value: expr.value + var normalize_directives = function(body) { + var in_directive = true; + + for (var i = 0; i < body.length; i++) { + if (in_directive && body[i] instanceof AST_Statement && body[i].body instanceof AST_String) { + body[i] = new AST_Directive({ + start: body[i].start, + end: body[i].end, + value: body[i].body.value }); + } else if (in_directive && !(body[i] instanceof AST_Statement && body[i].body instanceof AST_String)) { + in_directive = false; } + } + + return body; + }; + + var MOZ_TO_ME = { + Program: function(M) { + return new AST_Toplevel({ + start: my_start_token(M), + end: my_end_token(M), + body: normalize_directives(M.body.map(from_moz)) + }); + }, + FunctionDeclaration: function(M) { + return new AST_Defun({ + start: my_start_token(M), + end: my_end_token(M), + name: from_moz(M.id), + argnames: M.params.map(from_moz), + body: normalize_directives(from_moz(M.body).body) + }); + }, + FunctionExpression: function(M) { + return new AST_Function({ + start: my_start_token(M), + end: my_end_token(M), + name: from_moz(M.id), + argnames: M.params.map(from_moz), + body: normalize_directives(from_moz(M.body).body) + }); + }, + ExpressionStatement: function(M) { return new AST_SimpleStatement({ start: my_start_token(M), end: my_end_token(M), - body: from_moz(expr) + body: from_moz(M.expression) }); }, TryStatement: function(M) { @@ -25929,23 +23882,28 @@ function SourceMap(options) { }, Property: function(M) { var key = M.key; - var name = key.type == "Identifier" ? key.name : key.value; var args = { start : my_start_token(key), end : my_end_token(M.value), - key : name, + key : key.type == "Identifier" ? key.name : key.value, value : from_moz(M.value) }; - switch (M.kind) { - case "init": - return new AST_ObjectKeyVal(args); - case "set": - args.value.name = from_moz(key); - return new AST_ObjectSetter(args); - case "get": - args.value.name = from_moz(key); - return new AST_ObjectGetter(args); - } + if (M.kind == "init") return new AST_ObjectKeyVal(args); + args.key = new AST_SymbolAccessor({ + name: args.key + }); + args.value = new AST_Accessor(args.value); + if (M.kind == "get") return new AST_ObjectGetter(args); + if (M.kind == "set") return new AST_ObjectSetter(args); + }, + ArrayExpression: function(M) { + return new AST_Array({ + start : my_start_token(M), + end : my_end_token(M), + elements : M.elements.map(function(elem){ + return elem === null ? new AST_Hole() : from_moz(elem); + }) + }); }, ObjectExpression: function(M) { return new AST_Object({ @@ -26038,7 +23996,6 @@ function SourceMap(options) { }); }; - map("Program", AST_Toplevel, "body@body"); map("EmptyStatement", AST_EmptyStatement); map("BlockStatement", AST_BlockStatement, "body@body"); map("IfStatement", AST_If, "test>condition, consequent>body, alternate>alternative"); @@ -26054,13 +24011,10 @@ function SourceMap(options) { map("ForStatement", AST_For, "init>init, test>condition, update>step, body>body"); map("ForInStatement", AST_ForIn, "left>init, right>object, body>body"); map("DebuggerStatement", AST_Debugger); - map("FunctionDeclaration", AST_Defun, "id>name, params@argnames, body%body"); map("VariableDeclarator", AST_VarDef, "id>name, init>value"); map("CatchClause", AST_Catch, "param>argname, body%body"); map("ThisExpression", AST_This); - map("ArrayExpression", AST_Array, "elements@elements"); - map("FunctionExpression", AST_Function, "id>name, params@argnames, body%body"); map("BinaryExpression", AST_Binary, "operator=operator, left>left, right>right"); map("LogicalExpression", AST_Binary, "operator=operator, left>left, right>right"); map("AssignmentExpression", AST_Assign, "operator=operator, left>left, right>right"); @@ -26068,6 +24022,28 @@ function SourceMap(options) { map("NewExpression", AST_New, "callee>expression, arguments@args"); map("CallExpression", AST_Call, "callee>expression, arguments@args"); + def_to_moz(AST_Toplevel, function To_Moz_Program(M) { + return to_moz_scope("Program", M); + }); + + def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) { + return { + type: "FunctionDeclaration", + id: to_moz(M.name), + params: M.argnames.map(to_moz), + body: to_moz_scope("BlockStatement", M) + } + }); + + def_to_moz(AST_Function, function To_Moz_FunctionExpression(M) { + return { + type: "FunctionExpression", + id: to_moz(M.name), + params: M.argnames.map(to_moz), + body: to_moz_scope("BlockStatement", M) + } + }); + def_to_moz(AST_Directive, function To_Moz_Directive(M) { return { type: "ExpressionStatement", @@ -26155,6 +24131,13 @@ function SourceMap(options) { }; }); + def_to_moz(AST_Array, function To_Moz_ArrayExpression(M) { + return { + type: "ArrayExpression", + elements: M.elements.map(to_moz) + }; + }); + def_to_moz(AST_Object, function To_Moz_ObjectExpression(M) { return { type: "ObjectExpression", @@ -26163,11 +24146,10 @@ function SourceMap(options) { }); def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) { - var key = ( - is_identifier(M.key) - ? {type: "Identifier", name: M.key} - : {type: "Literal", value: M.key} - ); + var key = { + type: "Literal", + value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key + }; var kind; if (M instanceof AST_ObjectKeyVal) { kind = "init"; @@ -26328,8 +24310,8 @@ function SourceMap(options) { moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")( exports, my_start_token, my_end_token, from_moz ); - me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")( - to_moz, to_moz_block + me_to_moz = new Function("to_moz", "to_moz_block", "to_moz_scope", "return(" + me_to_moz + ")")( + to_moz, to_moz_block, to_moz_scope ); MOZ_TO_ME[moztype] = moz_to_me; def_to_moz(mytype, me_to_moz); @@ -26387,6 +24369,16 @@ function SourceMap(options) { }; }; + function to_moz_scope(type, node) { + var body = node.body.map(to_moz); + if (node.body[0] instanceof AST_SimpleStatement && node.body[0].body instanceof AST_String) { + body.unshift(to_moz(new AST_EmptyStatement(node.body[0]))); + } + return { + type: type, + body: body + }; + }; })(); /*********************************************************************** @@ -26435,7 +24427,15 @@ function SourceMap(options) { "use strict"; function find_builtins() { - var a = []; + // NaN will be included due to Number.NaN + var a = [ + "null", + "true", + "false", + "Infinity", + "-Infinity", + "undefined", + ]; [ Object, Array, Function, Number, String, Boolean, Error, Math, Date, RegExp @@ -26453,10 +24453,12 @@ function find_builtins() { function mangle_properties(ast, options) { options = defaults(options, { - reserved : null, - cache : null, - only_cache : false, - regex : null + cache: null, + debug: false, + ignore_quoted: false, + only_cache: false, + regex: null, + reserved: null, }); var reserved = options.reserved; @@ -26472,35 +24474,43 @@ function mangle_properties(ast, options) { } var regex = options.regex; + var ignore_quoted = options.ignore_quoted; + + // note debug is either false (disabled), or a string of the debug suffix to use (enabled). + // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true' + // the same as passing an empty string. + var debug = (options.debug !== false); + var debug_name_suffix; + if (debug) { + debug_name_suffix = (options.debug === true ? "" : options.debug); + } var names_to_mangle = []; var unmangleable = []; + var ignored = {}; // step 1: find candidates to mangle ast.walk(new TreeWalker(function(node){ if (node instanceof AST_ObjectKeyVal) { - add(node.key); + add(node.key, ignore_quoted && node.quote); } else if (node instanceof AST_ObjectProperty) { // setter or getter, since KeyVal is handled above add(node.key.name); } else if (node instanceof AST_Dot) { - if (this.parent() instanceof AST_Assign) { - add(node.property); - } + add(node.property); } else if (node instanceof AST_Sub) { - if (this.parent() instanceof AST_Assign) { - addStrings(node.property); - } + addStrings(node.property, ignore_quoted); } })); // step 2: transform the tree, renaming properties return ast.transform(new TreeTransformer(function(node){ if (node instanceof AST_ObjectKeyVal) { - node.key = mangle(node.key); + if (!(ignore_quoted && node.quote)) + node.key = mangle(node.key); } else if (node instanceof AST_ObjectProperty) { // setter or getter @@ -26510,7 +24520,8 @@ function mangle_properties(ast, options) { node.property = mangle(node.property); } else if (node instanceof AST_Sub) { - node.property = mangleStrings(node.property); + if (!ignore_quoted) + node.property = mangleStrings(node.property); } // else if (node instanceof AST_String) { // if (should_mangle(node.value)) { @@ -26534,18 +24545,24 @@ function mangle_properties(ast, options) { if (options.only_cache) { return cache.props.has(name); } - if (/^[0-9.]+$/.test(name)) return false; + if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false; return true; } function should_mangle(name) { + if (ignore_quoted && name in ignored) return false; if (regex && !regex.test(name)) return false; if (reserved.indexOf(name) >= 0) return false; return cache.props.has(name) || names_to_mangle.indexOf(name) >= 0; } - function add(name) { + function add(name, ignore) { + if (ignore) { + ignored[name] = true; + return; + } + if (can_mangle(name)) push_uniq(names_to_mangle, name); @@ -26561,15 +24578,31 @@ function mangle_properties(ast, options) { var mangled = cache.props.get(name); if (!mangled) { - do { - mangled = base54(++cache.cname); - } while (!can_mangle(mangled)); + if (debug) { + // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_. + var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_"; + + if (can_mangle(debug_mangled) && !(ignore_quoted && debug_mangled in ignored)) { + mangled = debug_mangled; + } + } + + // either debug mode is off, or it is on and we could not use the mangled name + if (!mangled) { + // note can_mangle() does not check if the name collides with the 'ignored' set + // (filled with quoted properties when ignore_quoted set). Make sure we add this + // check so we don't collide with a quoted name. + do { + mangled = base54(++cache.cname); + } while (!can_mangle(mangled) || (ignore_quoted && mangled in ignored)); + } + cache.props.set(name, mangled); } return mangled; } - function addStrings(node) { + function addStrings(node, ignore) { var out = {}; try { (function walk(node){ @@ -26579,7 +24612,7 @@ function mangle_properties(ast, options) { return true; } if (node instanceof AST_String) { - add(node.value); + add(node.value, ignore); return true; } if (node instanceof AST_Conditional) { @@ -26613,39 +24646,104 @@ function mangle_properties(ast, options) { } -AST_Node.warn_function = function(txt) { logger.error("uglifyjs2 WARN: " + txt); }; +exports["Compressor"] = Compressor; +exports["DefaultsError"] = DefaultsError; +exports["Dictionary"] = Dictionary; +exports["JS_Parse_Error"] = JS_Parse_Error; +exports["MAP"] = MAP; +exports["OutputStream"] = OutputStream; +exports["SourceMap"] = SourceMap; +exports["TreeTransformer"] = TreeTransformer; +exports["TreeWalker"] = TreeWalker; +exports["base54"] = base54; +exports["defaults"] = defaults; +exports["mangle_properties"] = mangle_properties; +exports["merge"] = merge; +exports["parse"] = parse; +exports["push_uniq"] = push_uniq; +exports["string_template"] = string_template; +exports["tokenizer"] = tokenizer; +exports["is_identifier"] = is_identifier; +exports["SymbolDef"] = SymbolDef; + +AST_Node.warn_function = function(txt) { logger.error("uglifyjs WARN: " + txt); }; + +exports.AST_Node.warn_function = function(txt) { + console.error("WARN: %s", txt); +}; + +function read_source_map(code) { + var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code); + if (!match) { + exports.AST_Node.warn("inline source map not found"); + return null; + } + return JSON.parse(new Buffer(match[2], "base64")); +} + exports.minify = function(files, options, name) { - options = defaults(options, { - spidermonkey : false, - outSourceMap : null, - sourceRoot : null, - inSourceMap : null, - fromString : false, - warnings : false, - mangle : {}, - output : null, - compress : {} + options = exports.defaults(options, { + compress : {}, + fromString : false, + inSourceMap : null, + mangle : {}, + mangleProperties : false, + nameCache : null, + outFileName : null, + output : null, + outSourceMap : null, + parse : {}, + sourceMapInline : false, + sourceMapUrl : null, + sourceRoot : null, + spidermonkey : false, + warnings : false, }); - base54.reset(); + exports.base54.reset(); + + var inMap = options.inSourceMap; + if (typeof inMap == "string" && inMap != "inline") { + inMap = JSON.parse(rjsFile.readFile(inMap, "utf8")); + } // 1. parse var toplevel = null, sourcesContent = {}; if (options.spidermonkey) { - toplevel = AST_Node.from_mozilla_ast(files); + if (inMap == "inline") { + throw new Error("inline source map only works with built-in parser"); + } + toplevel = exports.AST_Node.from_mozilla_ast(files); } else { - if (typeof files == "string") - files = [ files ]; - files.forEach(function(file, i){ + var addFile = function(file, fileUrl) { var code = options.fromString ? file : rjsFile.readFile(file, "utf8"); - sourcesContent[file] = code; - toplevel = parse(code, { - filename: options.fromString ? name : file, - toplevel: toplevel + if (inMap == "inline") { + inMap = read_source_map(code); + } + sourcesContent[fileUrl] = code; + toplevel = exports.parse(code, { + filename: fileUrl, + toplevel: toplevel, + bare_returns: options.parse ? options.parse.bare_returns : undefined }); + } + if (!options.fromString) { + files = exports.simple_glob(files); + if (inMap == "inline" && files.length > 1) { + throw new Error("inline source map only works with singular input"); + } + } + [].concat(files).forEach(function (files, i) { + if (typeof files === 'string') { + addFile(files, options.fromString ? i : files); + } else { + for (var fileUrl in files) { + addFile(files[fileUrl], fileUrl); + } + } }); } if (options.wrap) { @@ -26655,28 +24753,32 @@ exports.minify = function(files, options, name) { // 2. compress if (options.compress) { var compress = { warnings: options.warnings }; - merge(compress, options.compress); - toplevel.figure_out_scope(); - var sq = Compressor(compress); - toplevel = toplevel.transform(sq); + exports.merge(compress, options.compress); + toplevel.figure_out_scope(options.mangle); + var sq = exports.Compressor(compress); + toplevel = sq.compress(toplevel); + } + + // 3. mangle properties + if (options.mangleProperties || options.nameCache) { + options.mangleProperties.cache = exports.readNameCache(options.nameCache, "props"); + toplevel = exports.mangle_properties(toplevel, options.mangleProperties); + exports.writeNameCache(options.nameCache, "props", options.mangleProperties.cache); } - // 3. mangle + // 4. mangle if (options.mangle) { toplevel.figure_out_scope(options.mangle); toplevel.compute_char_frequency(options.mangle); toplevel.mangle_names(options.mangle); } - // 4. output - var inMap = options.inSourceMap; - var output = {}; - if (typeof options.inSourceMap == "string") { - inMap = rjsFile.readFile(options.inSourceMap, "utf8"); - } - if (options.outSourceMap) { - output.source_map = SourceMap({ - file: options.outSourceMap, + // 5. output + var output = { max_line_len: 32000 }; + if (options.outSourceMap || options.sourceMapInline) { + output.source_map = exports.SourceMap({ + // prefer outFileName, otherwise use outSourceMap without .map suffix + file: options.outFileName || (typeof options.outSourceMap === 'string' ? options.outSourceMap.replace(/\.map$/i, '') : null), orig: inMap, root: options.sourceRoot }); @@ -26690,20 +24792,24 @@ exports.minify = function(files, options, name) { } if (options.output) { - merge(output, options.output); + exports.merge(output, options.output); } - var stream = OutputStream(output); + var stream = exports.OutputStream(output); toplevel.print(stream); - if (options.outSourceMap && "string" === typeof options.outSourceMap) { - stream += "\n//# sourceMappingURL=" + options.outSourceMap; - } var source_map = output.source_map; if (source_map) { source_map = source_map + ""; } + var mappingUrlPrefix = "\n//# sourceMappingURL="; + if (options.sourceMapInline) { + stream += mappingUrlPrefix + "data:application/json;charset=utf-8;base64," + new Buffer(source_map).toString("base64"); + } else if (options.outSourceMap && typeof options.outSourceMap === "string" && options.sourceMapUrl !== false) { + stream += mappingUrlPrefix + (typeof options.sourceMapUrl === "string" ? options.sourceMapUrl : options.outSourceMap); + } + return { code : stream + "", map : source_map @@ -26721,11 +24827,11 @@ exports.minify = function(files, options, name) { // if (ctor.SUBCLASSES.length > 0) ret.sub = sub; // return ret; // } -// return doitem(AST_Node).sub; +// return doitem(exports.AST_Node).sub; // } exports.describe_ast = function() { - var out = OutputStream({ beautify: true }); + var out = exports.OutputStream({ beautify: true }); function doitem(ctor) { out.print("AST_" + ctor.TYPE); var props = ctor.SELF_PROPS.filter(function(prop){ @@ -26755,17 +24861,103 @@ exports.describe_ast = function() { }); } }; - doitem(AST_Node); + doitem(exports.AST_Node); return out + ""; }; -}); -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ +function readReservedFile(filename, reserved) { + if (!reserved) { + reserved = { vars: [], props: [] }; + } + var data = rjsFile.readFile(filename, "utf8"); + data = JSON.parse(data); + if (data.vars) { + data.vars.forEach(function(name){ + exports.push_uniq(reserved.vars, name); + }); + } + if (data.props) { + data.props.forEach(function(name){ + exports.push_uniq(reserved.props, name); + }); + } + return reserved; +} + +exports.readReservedFile = readReservedFile; + +exports.readDefaultReservedFile = function(reserved) { + return readReservedFile(require.resolve("./domprops.json"), reserved); +}; + +exports.readNameCache = function(filename, key) { + var cache = null; + if (filename) { + try { + var cache = rjsFile.readFile(filename, "utf8"); + cache = JSON.parse(cache)[key]; + if (!cache) throw "init"; + cache.props = exports.Dictionary.fromObject(cache.props); + } catch(ex) { + cache = { + cname: -1, + props: new exports.Dictionary() + }; + } + } + return cache; +}; + +exports.writeNameCache = function(filename, key, cache) { + if (filename) { + var data; + try { + data = rjsFile.readFile(filename, "utf8"); + data = JSON.parse(data); + } catch(ex) { + data = {}; + } + data[key] = { + cname: cache.cname, + props: cache.props.toObject() + }; + rjsFile.writeFile(filename, JSON.stringify(data, null, 2), "utf8"); + } +}; + +// A file glob function that only supports "*" and "?" wildcards in the basename. +// Example: "foo/bar/*baz??.*.js" +// Argument `glob` may be a string or an array of strings. +// Returns an array of strings. Garbage in, garbage out. +exports.simple_glob = function simple_glob(glob) { + if (Array.isArray(glob)) { + return [].concat.apply([], glob.map(simple_glob)); + } + if (glob.match(/\*|\?/)) { + var dir = path.dirname(glob); + try { + var entries = fs.readdirSync(dir); + } catch (ex) {} + if (entries) { + var pattern = "^" + path.basename(glob) + .replace(/[.+^$[\]\\(){}]/g, "\\$&") + .replace(/\*/g, "[^/\\\\]*") + .replace(/\?/g, "[^/\\\\]") + "$"; + var mod = process.platform === "win32" ? "i" : ""; + var rx = new RegExp(pattern, mod); + var results = entries.filter(function(name) { + return rx.test(name); + }).map(function(name) { + return path.join(dir, name); + }); + if (results.length) return results; + } + } + return [ glob ]; +}; + +}); /*jslint plusplus: true */ /*global define: false */ @@ -26794,7 +24986,7 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { //From an esprima example for traversing its ast. function traverse(object, visitor) { - var key, child; + var child; if (!object) { return; @@ -26803,13 +24995,11 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { if (visitor.call(null, object) === false) { return false; } - for (key in object) { - if (object.hasOwnProperty(key)) { - child = object[key]; - if (typeof child === 'object' && child !== null) { - if (traverse(child, visitor) === false) { - return false; - } + for (var i = 0, keys = Object.keys(object); i < keys.length; i++) { + child = object[keys[i]]; + if (typeof child === 'object' && child !== null) { + if (traverse(child, visitor) === false) { + return false; } } } @@ -26819,7 +25009,7 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { //stops that subtree analysis, not the rest of tree //visiting. function traverseBroad(object, visitor) { - var key, child; + var child; if (!object) { return; @@ -26828,12 +25018,10 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { if (visitor.call(null, object) === false) { return false; } - for (key in object) { - if (object.hasOwnProperty(key)) { - child = object[key]; - if (typeof child === 'object' && child !== null) { - traverseBroad(child, visitor); - } + for (var i = 0, keys = Object.keys(object); i < keys.length; i++) { + child = object[key]; + if (typeof child === 'object' && child !== null) { + traverseBroad(child, visitor); } } } @@ -26980,7 +25168,7 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { //Like traverse, but skips if branches that would not be processed //after has application that results in tests of true or false boolean //literal values. - var key, child, result, i, params, param, tempObject, + var keys, child, result, i, params, param, tempObject, hasHas = options && options.has; fnExpScope = fnExpScope || emptyScope; @@ -27034,14 +25222,15 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { } } - for (key in object) { - if (object.hasOwnProperty(key)) { - child = object[key]; - if (typeof child === 'object' && child !== null) { - result = this.recurse(child, onMatch, options, fnExpScope); - if (typeof result === 'string') { - break; - } + for (i = 0, keys = Object.keys(object); i < keys.length; i++) { + child = object[keys[i]]; + if (typeof child === 'object' && child !== null) { + result = this.recurse(child, onMatch, options, fnExpScope); + if (typeof result === 'string' && hasProp(fnExpScope, result)) { + //The result was still in fnExpScope so break. Otherwise, + //was a return from a a tree that had a UMD definition, + //but now out of that scope so keep siblings. + break; } } } @@ -27448,6 +25637,33 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { return name; }; + /** + * Finds all the named define module IDs in a file. + */ + parse.getAllNamedDefines = function (fileContents, excludeMap) { + var names = []; + parse.recurse(esprima.parse(fileContents), + function (callName, config, name, deps, node, factoryIdentifier, fnExpScope) { + if (callName === 'define' && name) { + if (!excludeMap.hasOwnProperty(name)) { + names.push(name); + } + } + + //If a UMD definition that points to a factory that is an Identifier, + //indicate processing should not traverse inside the UMD definition. + if (callName === 'define' && factoryIdentifier && hasProp(fnExpScope, factoryIdentifier)) { + return factoryIdentifier; + } + + //If define was found, no need to dive deeper, unless + //the config explicitly wants to dig deeper. + return true; + }, {}); + + return names; + }; + /** * Determines if define(), require({}|[]) or requirejs was called in the * file. Also finds out if define() is declared and if define.amd is called. @@ -27518,6 +25734,11 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { } else if (exp.left.object.name === 'exports' && exp.left.property) { type = 'exports'; + } else if (exp.left.object.type === 'MemberExpression' && + exp.left.object.object.name === 'module' && + exp.left.object.property.name === 'exports' && + exp.left.object.property.type === 'Identifier') { + type = 'moduleExports'; } } else if (node && node.type === 'CallExpression' && node.callee && @@ -27811,12 +26032,6 @@ define('parse', ['./esprimaAdapter', 'lang'], function (esprima, lang) { return parse; }); -/** - * @license Copyright (c) 2012-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*global define */ define('transform', [ './esprimaAdapter', './parse', 'logger', 'lang'], @@ -28255,12 +26470,6 @@ function (esprima, parse, logger, lang) { return transform; }); -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint regexp: true, plusplus: true */ /*global define: false */ @@ -28531,12 +26740,6 @@ define('pragma', ['parse', 'logger'], function (parse, logger) { }); if(env === 'browser') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false */ @@ -28545,12 +26748,6 @@ define('browser/optimize', {}); } if(env === 'node') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint strict: false */ /*global define: false */ @@ -28559,12 +26756,6 @@ define('node/optimize', {}); } if(env === 'rhino') { -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint sloppy: true, plusplus: true */ /*global define, java, Packages, com */ @@ -28756,20 +26947,14 @@ define('rhino/optimize', ['logger', 'env!env/file'], function (logger, file) { if(env === 'xpconnect') { define('xpconnect/optimize', {}); } -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint plusplus: true, nomen: true, regexp: true */ /*global define: false */ define('optimize', [ 'lang', 'logger', 'env!env/optimize', 'env!env/file', 'parse', - 'pragma', 'uglifyjs/index', 'uglifyjs2', + 'pragma', 'uglifyjs', 'source-map'], function (lang, logger, envOptimize, file, parse, - pragma, uglify, uglify2, + pragma, uglify, sourceMap) { 'use strict'; @@ -28779,7 +26964,8 @@ function (lang, logger, envOptimize, file, parse, cssUrlRegExp = /\url\(\s*([^\)]+)\s*\)?/g, protocolRegExp = /^\w+:/, SourceMapGenerator = sourceMap.SourceMapGenerator, - SourceMapConsumer =sourceMap.SourceMapConsumer; + SourceMapConsumer = sourceMap.SourceMapConsumer, + es5PlusGuidance = 'If the source uses ES2015 or later syntax, please pass "optimize: \'none\'" to r.js and use an ES2015+ compatible minifier after running r.js. The included UglifyJS only understands ES5 or earlier syntax.'; /** * If an URL from a CSS url value contains start/end quotes, remove them. @@ -29011,6 +27197,11 @@ function (lang, logger, envOptimize, file, parse, } } + if (config.generateSourceMaps && licenseContents) { + optConfig.preamble = licenseContents; + licenseContents = ''; + } + fileContents = licenseContents + optFunc(fileName, fileContents, outFileName, @@ -29167,40 +27358,6 @@ function (lang, logger, envOptimize, file, parse, optimizers: { uglify: function (fileName, fileContents, outFileName, keepLines, config) { - var parser = uglify.parser, - processor = uglify.uglify, - ast, errMessage, errMatch; - - config = config || {}; - - logger.trace("Uglifying file: " + fileName); - - try { - ast = parser.parse(fileContents, config.strict_semicolons); - if (config.no_mangle !== true) { - ast = processor.ast_mangle(ast, config); - } - ast = processor.ast_squeeze(ast, config); - - fileContents = processor.gen_code(ast, config); - - if (config.max_line_length) { - fileContents = processor.split_lines(fileContents, config.max_line_length); - } - - //Add trailing semicolon to match uglifyjs command line version - fileContents += ';'; - } catch (e) { - errMessage = e.toString(); - errMatch = /\nError(\r)?\n/.exec(errMessage); - if (errMatch) { - errMessage = errMessage.substring(0, errMatch.index); - } - throw new Error('Cannot uglify file: ' + fileName + '. Skipping it. Error is:\n' + errMessage); - } - return fileContents; - }, - uglify2: function (fileName, fileContents, outFileName, keepLines, config) { var result, existingMap, resultMap, finalMap, sourceIndex, uconfig = {}, existingMapPath = outFileName + '.map', @@ -29212,6 +27369,11 @@ function (lang, logger, envOptimize, file, parse, uconfig.fromString = true; + if (config.preamble) { + uconfig.output = {preamble: config.preamble}; + } + + if (config.generateSourceMaps && (outFileName || config._buildSourceMap)) { uconfig.outSourceMap = baseName + '.map'; @@ -29224,11 +27386,11 @@ function (lang, logger, envOptimize, file, parse, } } - logger.trace("Uglify2 file: " + fileName); + logger.trace("Uglify file: " + fileName); try { //var tempContents = fileContents.replace(/\/\/\# sourceMappingURL=.*$/, ''); - result = uglify2.minify(fileContents, uconfig, baseName + '.src.js'); + result = uglify.minify(fileContents, uconfig, baseName + '.src.js'); if (uconfig.outSourceMap && result.map) { resultMap = result.map; if (!existingMap && !config._buildSourceMap) { @@ -29246,7 +27408,11 @@ function (lang, logger, envOptimize, file, parse, fileContents = result.code; } } catch (e) { - throw new Error('Cannot uglify2 file: ' + fileName + '. Skipping it. Error is:\n' + e.toString()); + var errorString = e.toString(); + var isSyntaxError = /SyntaxError/.test(errorString); + throw new Error('Cannot uglify file: ' + fileName + + '. Skipping it. Error is:\n' + errorString + + (isSyntaxError ? '\n\n' + es5PlusGuidance : '')); } return fileContents; } @@ -29255,11 +27421,6 @@ function (lang, logger, envOptimize, file, parse, return optimize; }); -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ /* * This file patches require.js to communicate with the build system. */ @@ -29289,7 +27450,9 @@ define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'c // Used to strip out use strict from toString()'d functions for the // shim config since they will explicitly want to not be bound by strict, // but some envs, explicitly xpcshell, adds a use strict. - useStrictRegExp = /['"]use strict['"];/g; + useStrictRegExp = /['"]use strict['"];/g, + //Absolute path if starts with /, \, or x: + absoluteUrlRegExp = /^[\/\\]|^\w:/; //Turn off throwing on resolution conflict, that was just an older prim //idea about finding errors early, but does not comply with how promises @@ -29356,8 +27519,10 @@ define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'c }; function normalizeUrlWithBase(context, moduleName, url) { - //Adjust the URL if it was not transformed to use baseUrl. - if (require.jsExtRegExp.test(moduleName)) { + //Adjust the URL if it was not transformed to use baseUrl, but only + //if the URL is not already an absolute path. + if (require.jsExtRegExp.test(moduleName) && + !absoluteUrlRegExp.test(url)) { url = (context.config.dir || context.config.dirBaseUrl) + url; } return url; @@ -29628,7 +27793,8 @@ define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'c lang.each(depMaps, lang.bind(this, function (depMap) { if (typeof depMap === 'string') { depMap = context.makeModuleMap(depMap, - (this.map.isDefine ? this.map : this.map.parentMap)); + (this.map.isDefine ? this.map : this.map.parentMap), + false, true); } if (!context.fullExec[depMap.id]) { @@ -29778,12 +27944,6 @@ define('requirePatch', [ 'env!env/file', 'pragma', 'parse', 'lang', 'logger', 'c }; }; }); -/** - * @license RequireJS Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint */ /*global define: false, console: false */ @@ -29882,12 +28042,6 @@ define('commonJs', ['env!env/file', 'parse'], function (file, parse) { return commonJs; }); -/** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - /*jslint plusplus: true, nomen: true, regexp: true */ /*global define, requirejs, java, process, console */ @@ -29963,6 +28117,9 @@ define('build', function (require) { optimizeAllPluginResources: false, findNestedDependencies: false, preserveLicenseComments: true, + writeBuildTxt: true, + //Some builds can take a while, up the default limit. + waitSeconds: 30, //By default, all files/directories are copied, unless //they match this regexp, by default just excludes .folders dirExclusionRegExp: file.dirExclusionRegExp, @@ -29990,6 +28147,13 @@ define('build', function (require) { return dirName; } + function endsWithNewLine(text) { + if (text.charAt(text.length - 1) !== "\n") { + text += "\n"; + } + return text; + } + //Method used by plugin writeFile calls, defined up here to avoid //jslint warning about "making a function in a loop". function makeWriteFile(namespace, layer) { @@ -30006,6 +28170,75 @@ define('build', function (require) { return writeFile; } + /** + * Appends singleContents to fileContents and returns the result. If a sourceMapGenerator + * is provided, adds singleContents to the source map. + * + * @param {string} fileContents - The file contents to which to append singleContents + * @param {string} singleContents - The additional contents to append to fileContents + * @param {string} path - An absolute path of a file whose name to use in the source map. + * The file need not actually exist if the code in singleContents is generated. + * @param {{out: ?string, baseUrl: ?string}} config - The build configuration object. + * @param {?{_buildPath: ?string}} module - An object with module information. + * @param {?SourceMapGenerator} sourceMapGenerator - An instance of Mozilla's SourceMapGenerator, + * or null if no source map is being generated. + * @returns {string} fileContents with singleContents appended + */ + function appendToFileContents(fileContents, singleContents, path, config, module, sourceMapGenerator) { + var refPath, sourceMapPath, resourcePath, pluginId, sourceMapLineNumber, lineCount, parts, i; + if (sourceMapGenerator) { + if (config.out) { + refPath = config.baseUrl; + } else if (module && module._buildPath) { + refPath = module._buildPath; + } else { + refPath = ""; + } + parts = path.split('!'); + if (parts.length === 1) { + //Not a plugin resource, fix the path + sourceMapPath = build.makeRelativeFilePath(refPath, path); + } else { + //Plugin resource. If it looks like just a plugin + //followed by a module ID, pull off the plugin + //and put it at the end of the name, otherwise + //just leave it alone. + pluginId = parts.shift(); + resourcePath = parts.join('!'); + if (resourceIsModuleIdRegExp.test(resourcePath)) { + sourceMapPath = build.makeRelativeFilePath(refPath, require.toUrl(resourcePath)) + + '!' + pluginId; + } else { + sourceMapPath = path; + } + } + + sourceMapLineNumber = fileContents.split('\n').length - 1; + lineCount = singleContents.split('\n').length; + for (i = 1; i <= lineCount; i += 1) { + sourceMapGenerator.addMapping({ + generated: { + line: sourceMapLineNumber + i, + column: 0 + }, + original: { + line: i, + column: 0 + }, + source: sourceMapPath + }); + } + + //Store the content of the original in the source + //map since other transforms later like minification + //can mess up translating back to the original + //source. + sourceMapGenerator.setSourceContent(sourceMapPath, singleContents); + } + fileContents += singleContents; + return fileContents; + } + /** * Main API entry point into the build. The args argument can either be * an array of arguments (like the onese passed on a command-line), @@ -30253,7 +28486,8 @@ define('build', function (require) { '. Stopping, config is malformed.'); } - if (!module.create) { + // Copy the file, but only if it is not provided in rawText. + if (!module.create && (!config.rawText || !lang.hasProp(config.rawText, module.name))) { file.copyFile(module._sourcePath, module._buildPath); } } @@ -30375,17 +28609,36 @@ define('build', function (require) { })); } }).then(function () { - var moduleName, outOrigSourceMap; + var moduleName, outOrigSourceMap, + bundlesConfig = {}, + bundlesConfigOutFile = config.bundlesConfigOutFile; + if (modules) { //Now move the build layers to their final position. modules.forEach(function (module) { - var finalPath = module._buildPath; + var entryConfig, + finalPath = module._buildPath; + if (finalPath !== 'FUNCTION') { if (file.exists(finalPath)) { file.deleteFile(finalPath); } file.renameFile(finalPath + '-temp', finalPath); + //If bundles config should be written out, scan the + //built file for module IDs. Favor doing this reparse + //since tracking the IDs as the file is built has some + //edge cases around files that had more than one ID in + //them already, and likely loader plugin-written contents. + if (bundlesConfigOutFile) { + entryConfig = bundlesConfig[module.name] = []; + var bundleContents = file.readFile(finalPath); + var excludeMap = {}; + excludeMap[module.name] = true; + var parsedIds = parse.getAllNamedDefines(bundleContents, excludeMap); + entryConfig.push.apply(entryConfig, parsedIds); + } + //And finally, if removeCombined is specified, remove //any of the files that were used in this layer. //Be sure not to remove other build layers. @@ -30412,6 +28665,24 @@ define('build', function (require) { config.onModuleBundleComplete(module.onCompleteData); } }); + + //Write out bundles config, if it is wanted. + if (bundlesConfigOutFile) { + var text = file.readFile(bundlesConfigOutFile); + text = transform.modifyConfig(text, function (config) { + if (!config.bundles) { + config.bundles = {}; + } + + lang.eachProp(bundlesConfig, function (value, prop) { + config.bundles[prop] = value; + }); + + return config; + }); + + file.saveUtf8File(bundlesConfigOutFile, text); + } } //If removeCombined in play, remove any empty directories that @@ -30578,7 +28849,9 @@ define('build', function (require) { //All module layers are done, write out the build.txt file. - file.saveUtf8File(config.dir + "build.txt", buildFileContents); + if (config.writeBuildTxt) { + file.saveUtf8File(config.dir + "build.txt", buildFileContents); + } } //If just have one CSS file to optimize, do that here. @@ -30633,7 +28906,8 @@ define('build', function (require) { uglify2: true, closure: true, map: true, - throwWhen: true + throwWhen: true, + rawText: true }; build.hasDotPropMatch = function (prop) { @@ -30664,7 +28938,9 @@ define('build', function (require) { "insertRequire": true, "stubModules": true, "deps": true, - "mainConfigFile": true + "mainConfigFile": true, + "wrap.startFile": true, + "wrap.endFile": true }; for (i = 0; i < ary.length; i++) { @@ -30874,22 +29150,37 @@ define('build', function (require) { * Converts a wrap.startFile or endFile to be start/end as a string. * the startFile/endFile values can be arrays. */ - function flattenWrapFile(wrap, keyName, absFilePath) { - var keyFileName = keyName + 'File'; + function flattenWrapFile(config, keyName, absFilePath) { + var wrap = config.wrap, + keyFileName = keyName + 'File', + keyMapName = '__' + keyName + 'Map'; if (typeof wrap[keyName] !== 'string' && wrap[keyFileName]) { wrap[keyName] = ''; if (typeof wrap[keyFileName] === 'string') { wrap[keyFileName] = [wrap[keyFileName]]; } + wrap[keyMapName] = []; wrap[keyFileName].forEach(function (fileName) { - wrap[keyName] += (wrap[keyName] ? '\n' : '') + - file.readFile(build.makeAbsPath(fileName, absFilePath)); + var absPath = build.makeAbsPath(fileName, absFilePath), + fileText = endsWithNewLine(file.readFile(absPath)); + wrap[keyMapName].push(function (fileContents, cfg, sourceMapGenerator) { + return appendToFileContents(fileContents, fileText, absPath, cfg, null, sourceMapGenerator); + }); + wrap[keyName] += fileText; }); } else if (wrap[keyName] === null || wrap[keyName] === undefined) { //Allow missing one, just set to empty string. wrap[keyName] = ''; - } else if (typeof wrap[keyName] !== 'string') { + } else if (typeof wrap[keyName] === 'string') { + wrap[keyName] = endsWithNewLine(wrap[keyName]); + wrap[keyMapName] = [ + function (fileContents, cfg, sourceMapGenerator) { + var absPath = build.makeAbsPath("config-wrap-" + keyName + "-default.js", absFilePath); + return appendToFileContents(fileContents, wrap[keyName], absPath, cfg, null, sourceMapGenerator); + } + ]; + } else { throw new Error('wrap.' + keyName + ' or wrap.' + keyFileName + ' malformed'); } } @@ -30901,12 +29192,27 @@ define('build', function (require) { if (config.wrap === true) { //Use default values. config.wrap = { - start: '(function () {', - end: '}());' + start: '(function () {\n', + end: '}());', + __startMap: [ + function (fileContents, cfg, sourceMapGenerator) { + return appendToFileContents(fileContents, "(function () {\n", + build.makeAbsPath("config-wrap-start-default.js", + absFilePath), cfg, null, + sourceMapGenerator); + } + ], + __endMap: [ + function (fileContents, cfg, sourceMapGenerator) { + return appendToFileContents(fileContents, "}());", + build.makeAbsPath("config-wrap-end-default.js", absFilePath), + cfg, null, sourceMapGenerator); + } + ] }; } else { - flattenWrapFile(config.wrap, 'start', absFilePath); - flattenWrapFile(config.wrap, 'end', absFilePath); + flattenWrapFile(config, 'start', absFilePath); + flattenWrapFile(config, 'end', absFilePath); } } } catch (wrapError) { @@ -31064,6 +29370,13 @@ define('build', function (require) { config.dirBaseUrl = endsWithSlash(config.dirBaseUrl); } + if (config.bundlesConfigOutFile) { + if (!config.dir) { + throw new Error('bundlesConfigOutFile can only be used with optimizations ' + + 'that use "dir".'); + } + config.bundlesConfigOutFile = build.makeAbsPath(config.bundlesConfigOutFile, config.dir); + } //If out=stdout, write output to STDOUT instead of a file. if (config.out && config.out === 'stdout') { @@ -31073,8 +29386,7 @@ define('build', function (require) { var out = new java.io.PrintStream(java.lang.System.out, true, 'UTF-8'); out.println(content); } else if (e === 'node') { - process.stdout.setEncoding('utf8'); - process.stdout.write(content); + process.stdout.write(content, 'utf8'); } else { console.log(content); } @@ -31150,17 +29462,27 @@ define('build', function (require) { ' to insert in to a require([]) call.'); } + //Support older configs with uglify2 settings, but now that uglify1 has + //been removed, just translate it to 'uglify' settings. + if (config.optimize === 'uglify2') { + config.optimize = 'uglify'; + } + if (config.uglify2) { + config.uglify = config.uglify2; + delete config.uglify2; + } + if (config.generateSourceMaps) { - if (config.preserveLicenseComments && config.optimize !== 'none') { + if (config.preserveLicenseComments && !(config.optimize === 'none' || config.optimize === 'uglify')) { throw new Error('Cannot use preserveLicenseComments and ' + - 'generateSourceMaps together. Either explcitly set ' + - 'preserveLicenseComments to false (default is true) or ' + - 'turn off generateSourceMaps. If you want source maps with ' + - 'license comments, see: ' + + 'generateSourceMaps together, unless optimize is set ' + + 'to \'uglify\'. Either explicitly set preserveLicenseComments ' + + 'to false (default is true) or turn off generateSourceMaps. ' + + 'If you want source maps with license comments, see: ' + 'http://requirejs.org/docs/errors.html#sourcemapcomments'); } else if (config.optimize !== 'none' && config.optimize !== 'closure' && - config.optimize !== 'uglify2') { + config.optimize !== 'uglify') { //Allow optimize: none to pass, since it is useful when toggling //minification on and off to debug something, and it implicitly //works, since it does not need a source map. @@ -31656,11 +29978,16 @@ define('build', function (require) { }); //Write the built module to disk, and build up the build output. - fileContents = config.wrap ? config.wrap.start : ""; + fileContents = ""; + if (config.wrap && config.wrap.__startMap) { + config.wrap.__startMap.forEach(function (wrapFunction) { + fileContents = wrapFunction(fileContents, config, sourceMapGenerator); + }); + } + return prim.serial(layer.buildFilePaths.map(function (path) { return function () { - var lineCount, - singleContents = ''; + var singleContents = ''; moduleName = layer.buildFileToModule[path]; @@ -31695,7 +30022,11 @@ define('build', function (require) { singleContents = config.onBuildWrite(moduleName, path, singleContents); } }; - builder.write(parts.prefix, parts.name, writeApi); + + builder.write(parts.prefix, parts.name, writeApi, { + name: module.onCompleteData.name, + path: module.onCompleteData.path + }); } return; } else { @@ -31757,9 +30088,7 @@ define('build', function (require) { }); } }).then(function () { - var refPath, pluginId, resourcePath, shimDeps, - sourceMapPath, sourceMapLineNumber, - shortPath = path.replace(config.dir, ""); + var shimDeps, shortPath = path.replace(config.dir, ""); module.onCompleteData.included.push(shortPath); buildFileContents += shortPath + "\n"; @@ -31806,58 +30135,14 @@ define('build', function (require) { //for concatenation would cause an error otherwise. singleContents += '\n'; - //Add to the source map - if (sourceMapGenerator) { - refPath = config.out ? config.baseUrl : module._buildPath; - parts = path.split('!'); - if (parts.length === 1) { - //Not a plugin resource, fix the path - sourceMapPath = build.makeRelativeFilePath(refPath, path); - } else { - //Plugin resource. If it looks like just a plugin - //followed by a module ID, pull off the plugin - //and put it at the end of the name, otherwise - //just leave it alone. - pluginId = parts.shift(); - resourcePath = parts.join('!'); - if (resourceIsModuleIdRegExp.test(resourcePath)) { - sourceMapPath = build.makeRelativeFilePath(refPath, require.toUrl(resourcePath)) + - '!' + pluginId; - } else { - sourceMapPath = path; - } - } - - sourceMapLineNumber = fileContents.split('\n').length - 1; - lineCount = singleContents.split('\n').length; - for (var i = 1; i <= lineCount; i += 1) { - sourceMapGenerator.addMapping({ - generated: { - line: sourceMapLineNumber + i, - column: 0 - }, - original: { - line: i, - column: 0 - }, - source: sourceMapPath - }); - } - - //Store the content of the original in the source - //map since other transforms later like minification - //can mess up translating back to the original - //source. - sourceMapGenerator.setSourceContent(sourceMapPath, singleContents); - } - - //Add the file to the final contents - fileContents += singleContents; + //Add to the source map and to the final contents + fileContents = appendToFileContents(fileContents, singleContents, path, config, module, + sourceMapGenerator); }); }; })).then(function () { if (onLayerEnds.length) { - onLayerEnds.forEach(function (builder) { + onLayerEnds.forEach(function (builder, index) { var path; if (typeof module.out === 'string') { path = module.out; @@ -31865,7 +30150,9 @@ define('build', function (require) { path = module._buildPath; } builder.onLayerEnd(function (input) { - fileContents += "\n" + addSemiColon(input, config); + fileContents = + appendToFileContents(fileContents, "\n" + addSemiColon(input, config), + 'onLayerEnd' + index + '.js', config, module, sourceMapGenerator); }, { name: module.name, path: path @@ -31878,21 +30165,30 @@ define('build', function (require) { //a module definition for it in case the //built file is used with enforceDefine //(#432) - fileContents += '\n' + namespaceWithDot + 'define("' + module.name + '", function(){});\n'; + fileContents = + appendToFileContents(fileContents, '\n' + namespaceWithDot + 'define("' + module.name + + '", function(){});\n', 'module-create.js', config, module, + sourceMapGenerator); } //Add a require at the end to kick start module execution, if that //was desired. Usually this is only specified when using small shim //loaders like almond. if (module.insertRequire) { - fileContents += '\n' + namespaceWithDot + 'require(["' + module.insertRequire.join('", "') + '"]);\n'; + fileContents = + appendToFileContents(fileContents, '\n' + namespaceWithDot + 'require(["' + module.insertRequire.join('", "') + + '"]);\n', 'module-insertRequire.js', config, module, + sourceMapGenerator); } }); }).then(function () { + if (config.wrap && config.wrap.__endMap) { + config.wrap.__endMap.forEach(function (wrapFunction) { + fileContents = wrapFunction(fileContents, config, sourceMapGenerator); + }); + } return { - text: config.wrap ? - fileContents + config.wrap.end : - fileContents, + text: fileContents, buildText: buildFileContents, sourceMap: sourceMapGenerator ? JSON.stringify(sourceMapGenerator.toJSON(), null, ' ') : @@ -32064,13 +30360,7 @@ define('build', function (require) { //Do the optimizer work. loadLib(); - /** - * @license Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details - */ - -/* + /* * Create a build.js file that has the build options you want and pass that * build file to this file to do the build. See example.build.js for more information. */ @@ -32098,7 +30388,7 @@ function (args, quit, logger, build) { } else if (commandOption === 'v') { console.log('r.js: ' + version + ', RequireJS: ' + this.requirejsVars.require.version + - ', UglifyJS2: 2.6.1, UglifyJS: 1.3.4'); + ', UglifyJS: 2.8.29'); } else if (commandOption === 'convert') { loadLib(); diff --git a/www/js/lib/require.js b/www/js/lib/require.js index e33c7dd..78490f9 100644 --- a/www/js/lib/require.js +++ b/www/js/lib/require.js @@ -1,7 +1,6 @@ /** vim: et:ts=4:sw=4:sts=4 - * @license RequireJS 2.1.22 Copyright (c) 2010-2015, The Dojo Foundation All Rights Reserved. - * Available via the MIT or new BSD license. - * see: http://github.com/jrburke/requirejs for details + * @license RequireJS 2.3.6 Copyright jQuery Foundation and other contributors. + * Released under MIT license, https://github.com/requirejs/requirejs/blob/master/LICENSE */ //Not using strict: uneven strict support in browsers, #392, and causes //problems with requirejs.exec()/transpiler plugins that may not be strict. @@ -9,18 +8,17 @@ /*global window, navigator, document, importScripts, setTimeout, opera */ var requirejs, require, define; -(function (global) { +(function (global, setTimeout) { var req, s, head, baseElement, dataMain, src, interactiveScript, currentlyAddingScript, mainScript, subPath, - version = '2.1.22', - commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg, + version = '2.3.6', + commentRegExp = /\/\*[\s\S]*?\*\/|([^:"'=]|^)\/\/.*$/mg, cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g, jsSuffixRegExp = /\.js$/, currDirRegExp = /^\.\//, op = Object.prototype, ostring = op.toString, hasOwn = op.hasOwnProperty, - ap = Array.prototype, isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document), isWebWorker = !isBrowser && typeof importScripts !== 'undefined', //PS3 indicates loaded and complete, but need to wait for complete @@ -37,6 +35,11 @@ var requirejs, require, define; globalDefQueue = [], useInteractive = false; + //Could match something like ')//comment', do not lose the prefix to comment. + function commentReplace(match, singlePrefix) { + return singlePrefix || ''; + } + function isFunction(it) { return ostring.call(it) === '[object Function]'; } @@ -162,7 +165,7 @@ var requirejs, require, define; * @returns {Error} */ function makeError(id, msg, err, requireModules) { - var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id); + var e = new Error(msg + '\nhttps://requirejs.org/docs/errors.html#' + id); e.requireType = id; e.requireModules = requireModules; if (err) { @@ -437,7 +440,9 @@ var requirejs, require, define; //Account for relative paths if there is a base name. if (name) { if (prefix) { - if (pluginModule && pluginModule.normalize) { + if (isNormalized) { + normalizedName = name; + } else if (pluginModule && pluginModule.normalize) { //Plugin is loaded, use its normalize method. normalizedName = pluginModule.normalize(name, function (name) { return normalize(name, parentName, applyMap); @@ -861,10 +866,21 @@ var requirejs, require, define; if (this.depCount < 1 && !this.defined) { if (isFunction(factory)) { - try { + //If there is an error listener, favor passing + //to that instead of throwing an error. However, + //only do it for define()'d modules. require + //errbacks should not be called for failures in + //their callbacks (#699). However if a global + //onError is set, use that. + if ((this.events.error && this.map.isDefine) || + req.onError !== defaultOnError) { + try { + exports = context.execCb(id, factory, depExports, exports); + } catch (e) { + err = e; + } + } else { exports = context.execCb(id, factory, depExports, exports); - } catch (e) { - err = e; } // Favor return value over exports. If node/cjs in play, @@ -881,30 +897,12 @@ var requirejs, require, define; } if (err) { - // If there is an error listener, favor passing - // to that instead of throwing an error. However, - // only do it for define()'d modules. require - // errbacks should not be called for failures in - // their callbacks (#699). However if a global - // onError is set, use that. - if ((this.events.error && this.map.isDefine) || - req.onError !== defaultOnError) { - err.requireMap = this.map; - err.requireModules = this.map.isDefine ? [this.map.id] : null; - err.requireType = this.map.isDefine ? 'define' : 'require'; - return onError((this.error = err)); - } else if (typeof console !== 'undefined' && - console.error) { - // Log the error for debugging. If promises could be - // used, this would be different, but making do. - console.error(err); - } else { - // Do not want to completely lose the error. While this - // will mess up processing and lead to similar results - // as bug 1440, it at least surfaces the error. - req.onError(err); - } + err.requireMap = this.map; + err.requireModules = this.map.isDefine ? [this.map.id] : null; + err.requireType = this.map.isDefine ? 'define' : 'require'; + return onError((this.error = err)); } + } else { //Just a literal value exports = factory; @@ -976,7 +974,8 @@ var requirejs, require, define; //prefix and name should already be normalized, no need //for applying map config again either. normalizedMap = makeModuleMap(map.prefix + '!' + name, - this.map.parentMap); + this.map.parentMap, + true); on(normalizedMap, 'defined', bind(this, function (value) { this.map.normalizedMap = normalizedMap; @@ -1288,6 +1287,14 @@ var requirejs, require, define; } } + // Convert old style urlArgs string to a function. + if (typeof cfg.urlArgs === 'string') { + var urlArgs = cfg.urlArgs; + cfg.urlArgs = function(id, url) { + return (url.indexOf('?') === -1 ? '?' : '&') + urlArgs; + }; + } + //Save off the paths since they require special processing, //they are additive. var shim = config.shim, @@ -1664,13 +1671,12 @@ var requirejs, require, define; //Join the path parts together, then figure out if baseUrl is needed. url = syms.join('/'); - url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js')); + url += (ext || (/^data\:|^blob\:|\?/.test(url) || skipExt ? '' : '.js')); url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url; } - return config.urlArgs ? url + - ((url.indexOf('?') === -1 ? '?' : '&') + - config.urlArgs) : url; + return config.urlArgs && !/^blob\:/.test(url) ? + url + config.urlArgs(moduleName, url) : url; }, //Delegates to req.load. Broken out as a separate function to @@ -1724,8 +1730,8 @@ var requirejs, require, define; each(value.depMaps, function(depMap) { if (depMap.id === data.id) { parents.push(key); + return true; } - return true; }); } }); @@ -1891,9 +1897,6 @@ var requirejs, require, define; if (isBrowser) { //In the browser so use a script tag node = req.createNode(config, moduleName, url); - if (config.onNodeCreated) { - config.onNodeCreated(node, config, moduleName, url); - } node.setAttribute('data-requirecontext', context.contextName); node.setAttribute('data-requiremodule', moduleName); @@ -1909,11 +1912,11 @@ var requirejs, require, define; if (node.attachEvent && //Check if node.attachEvent is artificially added by custom script or //natively supported by browser - //read https://github.com/jrburke/requirejs/issues/187 + //read https://github.com/requirejs/requirejs/issues/187 //if we can NOT find [native code] then it must NOT natively supported. //in IE8, node.attachEvent does not have toString() //Note the test for "[native code" with no closing brace, see: - //https://github.com/jrburke/requirejs/issues/273 + //https://github.com/requirejs/requirejs/issues/273 !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && !isOpera) { //Probably IE. IE (at least 6-8) do not fire @@ -1941,6 +1944,12 @@ var requirejs, require, define; } node.src = url; + //Calling onNodeCreated after all properties on the node have been + //set, but before it is placed in the DOM. + if (config.onNodeCreated) { + config.onNodeCreated(node, config, moduleName, url); + } + //For some cache cases in IE 6-8, the script executes before the end //of the appendChild execution, so to tie an anonymous define //call to the module name (which is stored on the node), hold on @@ -1962,6 +1971,11 @@ var requirejs, require, define; //are in play, the expectation is that a build has been done so //that only one script needs to be loaded anyway. This may need //to be reevaluated if other use cases become common. + + // Post a task to the event loop to work around a bug in WebKit + // where the worker gets garbage-collected after calling + // importScripts(): https://webkit.org/b/153317 + setTimeout(function() {}, 0); importScripts(url); //Account for anonymous modules @@ -2007,8 +2021,10 @@ var requirejs, require, define; //Preserve dataMain in case it is a path (i.e. contains '?') mainScript = dataMain; - //Set final baseUrl if there is not already an explicit one. - if (!cfg.baseUrl) { + //Set final baseUrl if there is not already an explicit one, + //but only do so if the data-main value is not a loader plugin + //module ID. + if (!cfg.baseUrl && mainScript.indexOf('!') === -1) { //Pull off the directory of data-main for use as the //baseUrl. src = mainScript.split('/'); @@ -2069,7 +2085,7 @@ var requirejs, require, define; if (callback.length) { callback .toString() - .replace(commentRegExp, '') + .replace(commentRegExp, commentReplace) .replace(cjsRequireRegExp, function (match, dep) { deps.push(dep); }); @@ -2126,4 +2142,4 @@ var requirejs, require, define; //Set up with config info. req(cfg); -}(this)); +}(this, (typeof setTimeout === 'undefined' ? undefined : setTimeout)));