| /* |
| * JSHint, by JSHint Community. |
| * |
| * Licensed under the same slightly modified MIT license that JSLint is. |
| * It stops evil-doers everywhere. |
| * |
| * JSHint is a derivative work of JSLint: |
| * |
| * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * The Software shall be used for Good, not Evil. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * JSHint was forked from 2010-12-16 edition of JSLint. |
| * |
| */ |
| |
| /* |
| JSHINT is a global function. It takes two parameters. |
| |
| var myResult = JSHINT(source, option); |
| |
| The first parameter is either a string or an array of strings. If it is a |
| string, it will be split on '\n' or '\r'. If it is an array of strings, it |
| is assumed that each string represents one line. The source can be a |
| JavaScript text or a JSON text. |
| |
| The second parameter is an optional object of options which control the |
| operation of JSHINT. Most of the options are booleans: They are all |
| optional and have a default value of false. One of the options, predef, |
| can be an array of names, which will be used to declare global variables, |
| or an object whose keys are used as global names, with a boolean value |
| that determines if they are assignable. |
| |
| If it checks out, JSHINT returns true. Otherwise, it returns false. |
| |
| If false, you can inspect JSHINT.errors to find out the problems. |
| JSHINT.errors is an array of objects containing these members: |
| |
| { |
| line : The line (relative to 0) at which the lint was found |
| character : The character (relative to 0) at which the lint was found |
| reason : The problem |
| evidence : The text line in which the problem occurred |
| raw : The raw message before the details were inserted |
| a : The first detail |
| b : The second detail |
| c : The third detail |
| d : The fourth detail |
| } |
| |
| If a fatal error was found, a null will be the last element of the |
| JSHINT.errors array. |
| |
| You can request a Function Report, which shows all of the functions |
| and the parameters and vars that they use. This can be used to find |
| implied global variables and other problems. The report is in HTML and |
| can be inserted in an HTML <body>. |
| |
| var myReport = JSHINT.report(limited); |
| |
| If limited is true, then the report will be limited to only errors. |
| |
| You can request a data structure which contains JSHint's results. |
| |
| var myData = JSHINT.data(); |
| |
| It returns a structure with this form: |
| |
| { |
| errors: [ |
| { |
| line: NUMBER, |
| character: NUMBER, |
| reason: STRING, |
| evidence: STRING |
| } |
| ], |
| functions: [ |
| name: STRING, |
| line: NUMBER, |
| last: NUMBER, |
| param: [ |
| STRING |
| ], |
| closure: [ |
| STRING |
| ], |
| var: [ |
| STRING |
| ], |
| exception: [ |
| STRING |
| ], |
| outer: [ |
| STRING |
| ], |
| unused: [ |
| STRING |
| ], |
| global: [ |
| STRING |
| ], |
| label: [ |
| STRING |
| ] |
| ], |
| globals: [ |
| STRING |
| ], |
| member: { |
| STRING: NUMBER |
| }, |
| unuseds: [ |
| { |
| name: STRING, |
| line: NUMBER |
| } |
| ], |
| implieds: [ |
| { |
| name: STRING, |
| line: NUMBER |
| } |
| ], |
| urls: [ |
| STRING |
| ], |
| json: BOOLEAN |
| } |
| |
| Empty arrays will not be included. |
| |
| */ |
| |
| /*jshint |
| evil: true, nomen: false, onevar: false, regexp: false, strict: true, boss: true |
| */ |
| |
| /*members "\b", "\t", "\n", "\f", "\r", "!=", "!==", "\"", "%", |
| "(begin)", "(breakage)", "(context)", "(error)", "(global)", |
| "(identifier)", "(last)", "(line)", "(loopage)", "(name)", "(onevar)", |
| "(params)", "(scope)", "(statement)", "(verb)", "*", "+", "++", "-", |
| "--", "\/", "<", "<=", "==", "===", ">", ">=", $, $$, $A, $F, $H, $R, $break, |
| $continue, $w, Abstract, Ajax, __filename, __dirname, ActiveXObject, Array, |
| ArrayBuffer, ArrayBufferView, Autocompleter, Assets, Boolean, Builder, |
| Buffer, Browser, COM, CScript, Canvas, CustomAnimation, Class, Control, |
| Chain, Color, Cookie, Core, DataView, Date, Debug, Draggable, Draggables, |
| Droppables, Document, DomReady, DOMReady, Drag, E, Enumerator, Enumerable, |
| Element, Elements, Error, Effect, EvalError, Event, Events, FadeAnimation, |
| Field, Flash, Float32Array, Float64Array, Form, FormField, Frame, Function, |
| Fx, Group, Hash, HotKey, HTMLElement, HtmlTable, Iframe, IframeShim, Image, |
| Int16Array, Int32Array, Int8Array, Insertion, InputValidator, JSON, Keyboard, |
| Locale, LN10, LN2, LOG10E, LOG2E, MAX_VALUE, MIN_VALUE, Mask, Math, MenuItem, |
| MoveAnimation, MooTools, Native, NEGATIVE_INFINITY, Number, Object, |
| ObjectRange, Option, Options, OverText, PI, POSITIVE_INFINITY, |
| PeriodicalExecuter, Point, Position, Prototype, RangeError, Rectangle, |
| ReferenceError, RegExp, ResizeAnimation, Request, RotateAnimation, SQRT1_2, |
| SQRT2, ScrollBar, Scriptaculous, Scroller, Slick, Slider, Selector, String, |
| Style, SyntaxError, Sortable, Sortables, SortableObserver, Sound, Spinner, |
| System, Swiff, Text, TextArea, Template, Timer, Tips, Type, TypeError, |
| Toggle, Try, URI, URIError, URL, VBArray, WScript, Web, Window, XMLDOM, |
| XMLHttpRequest, XPathEvaluator, XPathException, XPathExpression, |
| XPathNamespace, XPathNSResolver, XPathResult, "\\", a, addEventListener, |
| address, alert, apply, applicationCache, arguments, arity, asi, b, bitwise, |
| block, blur, boolOptions, boss, browser, c, call, callee, caller, cases, |
| charAt, charCodeAt, character, clearInterval, clearTimeout, close, closed, |
| closure, comment, condition, confirm, console, constructor, content, couch, |
| create, css, curly, d, data, datalist, dd, debug, decodeURI, |
| decodeURIComponent, defaultStatus, defineClass, deserialize, devel, |
| document, edition, else, emit, encodeURI, encodeURIComponent, entityify, |
| eqeqeq, eqnull, errors, es5, escape, eval, event, evidence, evil, ex, |
| exception, exec, exps, expr, exports, FileReader, first, floor, focus, |
| forin, fragment, frames, from, fromCharCode, fud, funct, function, functions, |
| g, gc, getComputedStyle, getRow, GLOBAL, global, globals, globalstrict, |
| hasOwnProperty, help, history, i, id, identifier, immed, implieds, |
| include, indent, indexOf, init, ins, instanceOf, isAlpha, |
| isApplicationRunning, isArray, isDigit, isFinite, isNaN, join, jshint, |
| JSHINT, json, jquery, jQuery, keys, label, labelled, last, laxbreak, |
| latedef, lbp, led, left, length, line, load, loadClass, localStorage, |
| location, log, loopfunc, m, match, maxerr, maxlen, member,message, meta, |
| module, moveBy, moveTo, mootools, name, navigator, new, newcap, noarg, |
| node, noempty, nomen, nonew, nud, onbeforeunload, onblur, onerror, onevar, |
| onfocus, onload, onresize, onunload, open, openDatabase, openURL, opener, |
| opera, outer, param, parent, parseFloat, parseInt, passfail, plusplus, |
| predef, print, process, prompt, prototype, prototypejs, push, quit, range, |
| raw, reach, reason, regexp, readFile, readUrl, removeEventListener, replace, |
| report, require, reserved, resizeBy, resizeTo, resolvePath, resumeUpdates, |
| respond, rhino, right, runCommand, scroll, screen, scrollBy, scrollTo, |
| scrollbar, search, seal, send, serialize, setInterval, setTimeout, shift, |
| slice, sort,spawn, split, stack, status, start, strict, sub, substr, supernew, |
| shadow, supplant, sum, sync, test, toLowerCase, toString, toUpperCase, toint32, |
| token, top, type, typeOf, Uint16Array, Uint32Array, Uint8Array, undef, |
| unused, urls, value, valueOf, var, version, WebSocket, white, window, Worker |
| */ |
| |
| /*global exports: false */ |
| |
| // We build the application inside a function so that we produce only a single |
| // global variable. That function will be invoked immediately, and its return |
| // value is the JSHINT function itself. |
| |
| var JSHINT = (function () { |
| "use strict"; |
| |
| var anonname, // The guessed name for anonymous functions. |
| |
| // These are operators that should not be used with the ! operator. |
| |
| bang = { |
| '<' : true, |
| '<=' : true, |
| '==' : true, |
| '===': true, |
| '!==': true, |
| '!=' : true, |
| '>' : true, |
| '>=' : true, |
| '+' : true, |
| '-' : true, |
| '*' : true, |
| '/' : true, |
| '%' : true |
| }, |
| |
| // These are the JSHint boolean options. |
| |
| boolOptions = { |
| asi : true, // if automatic semicolon insertion should be tolerated |
| bitwise : true, // if bitwise operators should not be allowed |
| boss : true, // if advanced usage of assignments should be allowed |
| browser : true, // if the standard browser globals should be predefined |
| couch : true, // if CouchDB globals should be predefined |
| curly : true, // if curly braces around blocks should be required (even in if/for/while) |
| debug : true, // if debugger statements should be allowed |
| devel : true, // if logging globals should be predefined (console, alert, etc.) |
| eqeqeq : true, // if === should be required |
| eqnull : true, // if == null comparisons should be tolerated |
| es5 : true, // if ES5 syntax should be allowed |
| evil : true, // if eval should be allowed |
| expr : true, // if ExpressionStatement should be allowed as Programs |
| forin : true, // if for in statements must filter |
| globalstrict: true, // if global "use strict"; should be allowed (also enables 'strict') |
| immed : true, // if immediate invocations must be wrapped in parens |
| jquery : true, // if jQuery globals should be predefined |
| latedef : true, // if the use before definition should not be tolerated |
| laxbreak : true, // if line breaks should not be checked |
| loopfunc : true, // if functions should be allowed to be defined within loops |
| mootools : true, // if MooTools globals should be predefined |
| newcap : true, // if constructor names must be capitalized |
| noarg : true, // if arguments.caller and arguments.callee should be disallowed |
| node : true, // if the Node.js environment globals should be predefined |
| noempty : true, // if empty blocks should be disallowed |
| nonew : true, // if using `new` for side-effects should be disallowed |
| nomen : true, // if names should be checked |
| onevar : true, // if only one var statement per function should be allowed |
| passfail : true, // if the scan should stop on first error |
| plusplus : true, // if increment/decrement should not be allowed |
| prototypejs : true, // if Prototype and Scriptaculous globals shoudl be predefined |
| regexp : true, // if the . should not be allowed in regexp literals |
| rhino : true, // if the Rhino environment globals should be predefined |
| undef : true, // if variables should be declared before used |
| shadow : true, // if variable shadowing should be tolerated |
| strict : true, // require the "use strict"; pragma |
| sub : true, // if all forms of subscript notation are tolerated |
| supernew : true, // if `new function () { ... };` and `new Object;` should be tolerated |
| white : true // if strict whitespace rules apply |
| }, |
| |
| // browser contains a set of global names which are commonly provided by a |
| // web browser environment. |
| |
| browser = { |
| ArrayBuffer : false, |
| ArrayBufferView : false, |
| addEventListener: false, |
| applicationCache: false, |
| blur : false, |
| clearInterval : false, |
| clearTimeout : false, |
| close : false, |
| closed : false, |
| DataView : false, |
| defaultStatus : false, |
| document : false, |
| event : false, |
| FileReader : false, |
| Float32Array : false, |
| Float64Array : false, |
| focus : false, |
| frames : false, |
| getComputedStyle: false, |
| HTMLElement : false, |
| history : false, |
| Int16Array : false, |
| Int32Array : false, |
| Int8Array : false, |
| Image : false, |
| length : false, |
| localStorage : false, |
| location : false, |
| moveBy : false, |
| moveTo : false, |
| name : false, |
| navigator : false, |
| onbeforeunload : true, |
| onblur : true, |
| onerror : true, |
| onfocus : true, |
| onload : true, |
| onresize : true, |
| onunload : true, |
| open : false, |
| openDatabase : false, |
| opener : false, |
| Option : false, |
| parent : false, |
| print : false, |
| removeEventListener: false, |
| resizeBy : false, |
| resizeTo : false, |
| screen : false, |
| scroll : false, |
| scrollBy : false, |
| scrollTo : false, |
| setInterval : false, |
| setTimeout : false, |
| status : false, |
| top : false, |
| Uint16Array : false, |
| Uint32Array : false, |
| Uint8Array : false, |
| WebSocket : false, |
| window : false, |
| Worker : false, |
| XMLHttpRequest : false, |
| XPathEvaluator : false, |
| XPathException : false, |
| XPathExpression : false, |
| XPathNamespace : false, |
| XPathNSResolver : false, |
| XPathResult : false |
| }, |
| |
| couch = { |
| "require" : false, |
| respond : false, |
| getRow : false, |
| emit : false, |
| send : false, |
| start : false, |
| sum : false, |
| log : false, |
| exports : false, |
| module : false |
| }, |
| |
| devel = { |
| alert : false, |
| confirm : false, |
| console : false, |
| Debug : false, |
| opera : false, |
| prompt : false |
| }, |
| |
| escapes = { |
| '\b': '\\b', |
| '\t': '\\t', |
| '\n': '\\n', |
| '\f': '\\f', |
| '\r': '\\r', |
| '"' : '\\"', |
| '/' : '\\/', |
| '\\': '\\\\' |
| }, |
| |
| funct, // The current function |
| |
| functionicity = [ |
| 'closure', 'exception', 'global', 'label', |
| 'outer', 'unused', 'var' |
| ], |
| |
| functions, // All of the functions |
| |
| global, // The global scope |
| implied, // Implied globals |
| inblock, |
| indent, |
| jsonmode, |
| |
| jquery = { |
| '$' : false, |
| jQuery : false |
| }, |
| |
| lines, |
| lookahead, |
| member, |
| membersOnly, |
| |
| mootools = { |
| '$' : false, |
| '$$' : false, |
| Assets : false, |
| Browser : false, |
| Chain : false, |
| Class : false, |
| Color : false, |
| Cookie : false, |
| Core : false, |
| Document : false, |
| DomReady : false, |
| DOMReady : false, |
| Drag : false, |
| Element : false, |
| Elements : false, |
| Event : false, |
| Events : false, |
| Fx : false, |
| Group : false, |
| Hash : false, |
| HtmlTable : false, |
| Iframe : false, |
| IframeShim : false, |
| InputValidator : false, |
| instanceOf : false, |
| Keyboard : false, |
| Locale : false, |
| Mask : false, |
| MooTools : false, |
| Native : false, |
| Options : false, |
| OverText : false, |
| Request : false, |
| Scroller : false, |
| Slick : false, |
| Slider : false, |
| Sortables : false, |
| Spinner : false, |
| Swiff : false, |
| Tips : false, |
| Type : false, |
| typeOf : false, |
| URI : false, |
| Window : false |
| }, |
| |
| nexttoken, |
| |
| node = { |
| __filename : false, |
| __dirname : false, |
| exports : false, |
| Buffer : false, |
| GLOBAL : false, |
| global : false, |
| module : false, |
| process : false, |
| require : false |
| }, |
| |
| noreach, |
| option, |
| predefined, // Global variables defined by option |
| prereg, |
| prevtoken, |
| |
| prototypejs = { |
| '$' : false, |
| '$$' : false, |
| '$A' : false, |
| '$F' : false, |
| '$H' : false, |
| '$R' : false, |
| '$break' : false, |
| '$continue' : false, |
| '$w' : false, |
| Abstract : false, |
| Ajax : false, |
| Class : false, |
| Enumerable : false, |
| Element : false, |
| Event : false, |
| Field : false, |
| Form : false, |
| Hash : false, |
| Insertion : false, |
| ObjectRange : false, |
| PeriodicalExecuter: false, |
| Position : false, |
| Prototype : false, |
| Selector : false, |
| Template : false, |
| Toggle : false, |
| Try : false, |
| Autocompleter : false, |
| Builder : false, |
| Control : false, |
| Draggable : false, |
| Draggables : false, |
| Droppables : false, |
| Effect : false, |
| Sortable : false, |
| SortableObserver : false, |
| Sound : false, |
| Scriptaculous : false |
| }, |
| |
| rhino = { |
| defineClass : false, |
| deserialize : false, |
| gc : false, |
| help : false, |
| load : false, |
| loadClass : false, |
| print : false, |
| quit : false, |
| readFile : false, |
| readUrl : false, |
| runCommand : false, |
| seal : false, |
| serialize : false, |
| spawn : false, |
| sync : false, |
| toint32 : false, |
| version : false |
| }, |
| |
| scope, // The current scope |
| src, |
| stack, |
| |
| // standard contains the global names that are provided by the |
| // ECMAScript standard. |
| |
| standard = { |
| Array : false, |
| Boolean : false, |
| Date : false, |
| decodeURI : false, |
| decodeURIComponent : false, |
| encodeURI : false, |
| encodeURIComponent : false, |
| Error : false, |
| 'eval' : false, |
| EvalError : false, |
| Function : false, |
| hasOwnProperty : false, |
| isFinite : false, |
| isNaN : false, |
| JSON : false, |
| Math : false, |
| Number : false, |
| Object : false, |
| parseInt : false, |
| parseFloat : false, |
| RangeError : false, |
| ReferenceError : false, |
| RegExp : false, |
| String : false, |
| SyntaxError : false, |
| TypeError : false, |
| URIError : false |
| }, |
| |
| standard_member = { |
| E : true, |
| LN2 : true, |
| LN10 : true, |
| LOG2E : true, |
| LOG10E : true, |
| MAX_VALUE : true, |
| MIN_VALUE : true, |
| NEGATIVE_INFINITY : true, |
| PI : true, |
| POSITIVE_INFINITY : true, |
| SQRT1_2 : true, |
| SQRT2 : true |
| }, |
| |
| strict_mode, |
| syntax = {}, |
| tab, |
| token, |
| urls, |
| warnings, |
| |
| // Regular expressions. Some of these are stupidly long. |
| |
| // unsafe comment or string |
| ax = /@cc|<\/?|script|\]\s*\]|<\s*!|</i, |
| // unsafe characters that are silently deleted by one or more browsers |
| cx = /[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/, |
| // token |
| tx = /^\s*([(){}\[.,:;'"~\?\]#@]|==?=?|\/(\*(jshint|jslint|members?|global)?|=|\/)?|\*[\/=]?|\+(?:=|\++)?|-(?:=|-+)?|%=?|&[&=]?|\|[|=]?|>>?>?=?|<([\/=!]|\!(\[|--)?|<=?)?|\^=?|\!=?=?|[a-zA-Z_$][a-zA-Z0-9_$]*|[0-9]+([xX][0-9a-fA-F]+|\.[0-9]*)?([eE][+\-]?[0-9]+)?)/, |
| // characters in strings that need escapement |
| nx = /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/, |
| nxg = /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, |
| // star slash |
| lx = /\*\/|\/\*/, |
| // identifier |
| ix = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/, |
| // javascript url |
| jx = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livescript)\s*:/i, |
| // catches /* falls through */ comments |
| ft = /^\s*\/\*\s*falls\sthrough\s*\*\/\s*$/; |
| |
| function F() {} // Used by Object.create |
| |
| function is_own(object, name) { |
| |
| // The object.hasOwnProperty method fails when the property under consideration |
| // is named 'hasOwnProperty'. So we have to use this more convoluted form. |
| |
| return Object.prototype.hasOwnProperty.call(object, name); |
| } |
| |
| // Provide critical ES5 functions to ES3. |
| |
| if (typeof Array.isArray !== 'function') { |
| Array.isArray = function (o) { |
| return Object.prototype.toString.apply(o) === '[object Array]'; |
| }; |
| } |
| |
| if (typeof Object.create !== 'function') { |
| Object.create = function (o) { |
| F.prototype = o; |
| return new F(); |
| }; |
| } |
| |
| if (typeof Object.keys !== 'function') { |
| Object.keys = function (o) { |
| var a = [], k; |
| for (k in o) { |
| if (is_own(o, k)) { |
| a.push(k); |
| } |
| } |
| return a; |
| }; |
| } |
| |
| // Non standard methods |
| |
| if (typeof String.prototype.entityify !== 'function') { |
| String.prototype.entityify = function () { |
| return this |
| .replace(/&/g, '&') |
| .replace(/</g, '<') |
| .replace(/>/g, '>'); |
| }; |
| } |
| |
| if (typeof String.prototype.isAlpha !== 'function') { |
| String.prototype.isAlpha = function () { |
| return (this >= 'a' && this <= 'z\uffff') || |
| (this >= 'A' && this <= 'Z\uffff'); |
| }; |
| } |
| |
| if (typeof String.prototype.isDigit !== 'function') { |
| String.prototype.isDigit = function () { |
| return (this >= '0' && this <= '9'); |
| }; |
| } |
| |
| if (typeof String.prototype.supplant !== 'function') { |
| String.prototype.supplant = function (o) { |
| return this.replace(/\{([^{}]*)\}/g, function (a, b) { |
| var r = o[b]; |
| return typeof r === 'string' || typeof r === 'number' ? r : a; |
| }); |
| }; |
| } |
| |
| if (typeof String.prototype.name !== 'function') { |
| String.prototype.name = function () { |
| |
| // If the string looks like an identifier, then we can return it as is. |
| // If the string contains no control characters, no quote characters, and no |
| // backslash characters, then we can simply slap some quotes around it. |
| // Otherwise we must also replace the offending characters with safe |
| // sequences. |
| |
| if (ix.test(this)) { |
| return this; |
| } |
| if (nx.test(this)) { |
| return '"' + this.replace(nxg, function (a) { |
| var c = escapes[a]; |
| if (c) { |
| return c; |
| } |
| return '\\u' + ('0000' + a.charCodeAt().toString(16)).slice(-4); |
| }) + '"'; |
| } |
| return '"' + this + '"'; |
| }; |
| } |
| |
| |
| function combine(t, o) { |
| var n; |
| for (n in o) { |
| if (is_own(o, n)) { |
| t[n] = o[n]; |
| } |
| } |
| } |
| |
| function assume() { |
| if (option.couch) |
| combine(predefined, couch); |
| |
| if (option.rhino) |
| combine(predefined, rhino); |
| |
| if (option.prototypejs) |
| combine(predefined, prototypejs); |
| |
| if (option.node) |
| combine(predefined, node); |
| |
| if (option.devel) |
| combine(predefined, devel); |
| |
| if (option.browser) |
| combine(predefined, browser); |
| |
| if (option.jquery) |
| combine(predefined, jquery); |
| |
| if (option.mootools) |
| combine(predefined, mootools); |
| |
| if (option.globalstrict) |
| option.strict = true; |
| } |
| |
| |
| // Produce an error warning. |
| |
| function quit(m, l, ch) { |
| throw { |
| name: 'JSHintError', |
| line: l, |
| character: ch, |
| message: m + " (" + Math.floor((l / lines.length) * 100) + |
| "% scanned)." |
| }; |
| } |
| |
| function warning(m, t, a, b, c, d) { |
| var ch, l, w; |
| t = t || nexttoken; |
| if (t.id === '(end)') { // `~ |
| t = token; |
| } |
| l = t.line || 0; |
| ch = t.from || 0; |
| w = { |
| id: '(error)', |
| raw: m, |
| evidence: lines[l - 1] || '', |
| line: l, |
| character: ch, |
| a: a, |
| b: b, |
| c: c, |
| d: d |
| }; |
| w.reason = m.supplant(w); |
| JSHINT.errors.push(w); |
| if (option.passfail) { |
| quit('Stopping. ', l, ch); |
| } |
| warnings += 1; |
| if (warnings >= option.maxerr) { |
| quit("Too many errors.", l, ch); |
| } |
| return w; |
| } |
| |
| function warningAt(m, l, ch, a, b, c, d) { |
| return warning(m, { |
| line: l, |
| from: ch |
| }, a, b, c, d); |
| } |
| |
| function error(m, t, a, b, c, d) { |
| var w = warning(m, t, a, b, c, d); |
| quit("Stopping, unable to continue.", w.line, w.character); |
| } |
| |
| function errorAt(m, l, ch, a, b, c, d) { |
| return error(m, { |
| line: l, |
| from: ch |
| }, a, b, c, d); |
| } |
| |
| |
| |
| // lexical analysis and token construction |
| |
| var lex = (function lex() { |
| var character, from, line, s; |
| |
| // Private lex methods |
| |
| function nextLine() { |
| var at, |
| tw; // trailing whitespace check |
| |
| if (line >= lines.length) |
| return false; |
| |
| character = 1; |
| s = lines[line]; |
| line += 1; |
| at = s.search(/ \t/); |
| |
| if (at >= 0) |
| warningAt("Mixed spaces and tabs.", line, at + 1); |
| |
| s = s.replace(/\t/g, tab); |
| at = s.search(cx); |
| |
| if (at >= 0) |
| warningAt("Unsafe character.", line, at); |
| |
| if (option.maxlen && option.maxlen < s.length) |
| warningAt("Line too long.", line, s.length); |
| |
| // Check for trailing whitespaces |
| tw = s.search(/\s+$/); |
| if (option.white && ~tw) |
| warningAt("Trailing whitespace.", line, tw); |
| |
| return true; |
| } |
| |
| // Produce a token object. The token inherits from a syntax symbol. |
| |
| function it(type, value) { |
| var i, t; |
| if (type === '(color)' || type === '(range)') { |
| t = {type: type}; |
| } else if (type === '(punctuator)' || |
| (type === '(identifier)' && is_own(syntax, value))) { |
| t = syntax[value] || syntax['(error)']; |
| } else { |
| t = syntax[type]; |
| } |
| t = Object.create(t); |
| if (type === '(string)' || type === '(range)') { |
| if (jx.test(value)) { |
| warningAt("Script URL.", line, from); |
| } |
| } |
| if (type === '(identifier)') { |
| t.identifier = true; |
| if (value === '__iterator__' || value === '__proto__') { |
| errorAt("Reserved name '{a}'.", |
| line, from, value); |
| } else if (option.nomen && |
| (value.charAt(0) === '_' || |
| value.charAt(value.length - 1) === '_')) { |
| warningAt("Unexpected {a} in '{b}'.", line, from, |
| "dangling '_'", value); |
| } |
| } |
| t.value = value; |
| t.line = line; |
| t.character = character; |
| t.from = from; |
| i = t.id; |
| if (i !== '(endline)') { |
| prereg = i && |
| (('(,=:[!&|?{};'.indexOf(i.charAt(i.length - 1)) >= 0) || |
| i === 'return'); |
| } |
| return t; |
| } |
| |
| // Public lex methods |
| |
| return { |
| init: function (source) { |
| if (typeof source === 'string') { |
| lines = source |
| .replace(/\r\n/g, '\n') |
| .replace(/\r/g, '\n') |
| .split('\n'); |
| } else { |
| lines = source; |
| } |
| |
| // If the first line is a shebang (#!), make it a blank and move on. |
| // Shebangs are used by Node scripts. |
| if (lines[0] && lines[0].substr(0, 2) == '#!') |
| lines[0] = ''; |
| |
| line = 0; |
| nextLine(); |
| from = 1; |
| }, |
| |
| range: function (begin, end) { |
| var c, value = ''; |
| from = character; |
| if (s.charAt(0) !== begin) { |
| errorAt("Expected '{a}' and instead saw '{b}'.", |
| line, character, begin, s.charAt(0)); |
| } |
| for (;;) { |
| s = s.slice(1); |
| character += 1; |
| c = s.charAt(0); |
| switch (c) { |
| case '': |
| errorAt("Missing '{a}'.", line, character, c); |
| break; |
| case end: |
| s = s.slice(1); |
| character += 1; |
| return it('(range)', value); |
| case '\\': |
| warningAt("Unexpected '{a}'.", line, character, c); |
| } |
| value += c; |
| } |
| |
| }, |
| |
| // token -- this is called by advance to get the next token. |
| |
| token: function () { |
| var b, c, captures, d, depth, high, i, l, low, q, t; |
| |
| function match(x) { |
| var r = x.exec(s), r1; |
| if (r) { |
| l = r[0].length; |
| r1 = r[1]; |
| c = r1.charAt(0); |
| s = s.substr(l); |
| from = character + l - r1.length; |
| character += l; |
| return r1; |
| } |
| } |
| |
| function string(x) { |
| var c, j, r = ''; |
| |
| if (jsonmode && x !== '"') { |
| warningAt("Strings must use doublequote.", |
| line, character); |
| } |
| |
| function esc(n) { |
| var i = parseInt(s.substr(j + 1, n), 16); |
| j += n; |
| if (i >= 32 && i <= 126 && |
| i !== 34 && i !== 92 && i !== 39) { |
| warningAt("Unnecessary escapement.", line, character); |
| } |
| character += n; |
| c = String.fromCharCode(i); |
| } |
| j = 0; |
| for (;;) { |
| while (j >= s.length) { |
| j = 0; |
| if (!nextLine()) { |
| errorAt("Unclosed string.", line, from); |
| } |
| } |
| c = s.charAt(j); |
| if (c === x) { |
| character += 1; |
| s = s.substr(j + 1); |
| return it('(string)', r, x); |
| } |
| if (c < ' ') { |
| if (c === '\n' || c === '\r') { |
| break; |
| } |
| warningAt("Control character in string: {a}.", |
| line, character + j, s.slice(0, j)); |
| } else if (c === '\\') { |
| j += 1; |
| character += 1; |
| c = s.charAt(j); |
| switch (c) { |
| case '\\': |
| case '"': |
| case '/': |
| break; |
| case '\'': |
| if (jsonmode) { |
| warningAt("Avoid \\'.", line, character); |
| } |
| break; |
| case 'b': |
| c = '\b'; |
| break; |
| case 'f': |
| c = '\f'; |
| break; |
| case 'n': |
| c = '\n'; |
| break; |
| case 'r': |
| c = '\r'; |
| break; |
| case 't': |
| c = '\t'; |
| break; |
| case 'u': |
| esc(4); |
| break; |
| case 'v': |
| if (jsonmode) { |
| warningAt("Avoid \\v.", line, character); |
| } |
| c = '\v'; |
| break; |
| case 'x': |
| if (jsonmode) { |
| warningAt("Avoid \\x-.", line, character); |
| } |
| esc(2); |
| break; |
| default: |
| warningAt("Bad escapement.", line, character); |
| } |
| } |
| r += c; |
| character += 1; |
| j += 1; |
| } |
| } |
| |
| for (;;) { |
| if (!s) { |
| return it(nextLine() ? '(endline)' : '(end)', ''); |
| } |
| t = match(tx); |
| if (!t) { |
| t = ''; |
| c = ''; |
| while (s && s < '!') { |
| s = s.substr(1); |
| } |
| if (s) { |
| errorAt("Unexpected '{a}'.", line, character, s.substr(0, 1)); |
| } |
| } else { |
| |
| // identifier |
| |
| if (c.isAlpha() || c === '_' || c === '$') { |
| return it('(identifier)', t); |
| } |
| |
| // number |
| |
| if (c.isDigit()) { |
| if (!isFinite(Number(t))) { |
| warningAt("Bad number '{a}'.", |
| line, character, t); |
| } |
| if (s.substr(0, 1).isAlpha()) { |
| warningAt("Missing space after '{a}'.", |
| line, character, t); |
| } |
| if (c === '0') { |
| d = t.substr(1, 1); |
| if (d.isDigit()) { |
| if (token.id !== '.') { |
| warningAt("Don't use extra leading zeros '{a}'.", |
| line, character, t); |
| } |
| } else if (jsonmode && (d === 'x' || d === 'X')) { |
| warningAt("Avoid 0x-. '{a}'.", |
| line, character, t); |
| } |
| } |
| if (t.substr(t.length - 1) === '.') { |
| warningAt( |
| "A trailing decimal point can be confused with a dot '{a}'.", line, character, t); |
| } |
| return it('(number)', t); |
| } |
| switch (t) { |
| |
| // string |
| |
| case '"': |
| case "'": |
| return string(t); |
| |
| // // comment |
| |
| case '//': |
| if (src) { |
| warningAt("Unexpected comment.", line, character); |
| } |
| s = ''; |
| token.comment = true; |
| break; |
| |
| // /* comment |
| |
| case '/*': |
| if (src) { |
| warningAt("Unexpected comment.", line, character); |
| } |
| for (;;) { |
| i = s.search(lx); |
| if (i >= 0) { |
| break; |
| } |
| if (!nextLine()) { |
| errorAt("Unclosed comment.", line, character); |
| } |
| } |
| character += i + 2; |
| if (s.substr(i, 1) === '/') { |
| errorAt("Nested comment.", line, character); |
| } |
| s = s.substr(i + 2); |
| token.comment = true; |
| break; |
| |
| // /*members /*jshint /*global |
| |
| case '/*members': |
| case '/*member': |
| case '/*jshint': |
| case '/*jslint': |
| case '/*global': |
| case '*/': |
| return { |
| value: t, |
| type: 'special', |
| line: line, |
| character: character, |
| from: from |
| }; |
| |
| case '': |
| break; |
| // / |
| case '/': |
| if (token.id === '/=') { |
| errorAt( |
| "A regular expression literal can be confused with '/='.", line, from); |
| } |
| if (prereg) { |
| depth = 0; |
| captures = 0; |
| l = 0; |
| for (;;) { |
| b = true; |
| c = s.charAt(l); |
| l += 1; |
| switch (c) { |
| case '': |
| errorAt("Unclosed regular expression.", |
| line, from); |
| return; |
| case '/': |
| if (depth > 0) { |
| warningAt("Unescaped '{a}'.", |
| line, from + l, '/'); |
| } |
| c = s.substr(0, l - 1); |
| q = { |
| g: true, |
| i: true, |
| m: true |
| }; |
| while (q[s.charAt(l)] === true) { |
| q[s.charAt(l)] = false; |
| l += 1; |
| } |
| character += l; |
| s = s.substr(l); |
| q = s.charAt(0); |
| if (q === '/' || q === '*') { |
| errorAt("Confusing regular expression.", |
| line, from); |
| } |
| return it('(regexp)', c); |
| case '\\': |
| c = s.charAt(l); |
| if (c < ' ') { |
| warningAt( |
| "Unexpected control character in regular expression.", line, from + l); |
| } else if (c === '<') { |
| warningAt( |
| "Unexpected escaped character '{a}' in regular expression.", line, from + l, c); |
| } |
| l += 1; |
| break; |
| case '(': |
| depth += 1; |
| b = false; |
| if (s.charAt(l) === '?') { |
| l += 1; |
| switch (s.charAt(l)) { |
| case ':': |
| case '=': |
| case '!': |
| l += 1; |
| break; |
| default: |
| warningAt( |
| "Expected '{a}' and instead saw '{b}'.", line, from + l, ':', s.charAt(l)); |
| } |
| } else { |
| captures += 1; |
| } |
| break; |
| case '|': |
| b = false; |
| break; |
| case ')': |
| if (depth === 0) { |
| warningAt("Unescaped '{a}'.", |
| line, from + l, ')'); |
| } else { |
| depth -= 1; |
| } |
| break; |
| case ' ': |
| q = 1; |
| while (s.charAt(l) === ' ') { |
| l += 1; |
| q += 1; |
| } |
| if (q > 1) { |
| warningAt( |
| "Spaces are hard to count. Use {{a}}.", line, from + l, q); |
| } |
| break; |
| case '[': |
| c = s.charAt(l); |
| if (c === '^') { |
| l += 1; |
| if (option.regexp) { |
| warningAt("Insecure '{a}'.", |
| line, from + l, c); |
| } else if (s.charAt(l) === ']') { |
| errorAt("Unescaped '{a}'.", |
| line, from + l, '^'); |
| } |
| } |
| q = false; |
| if (c === ']') { |
| warningAt("Empty class.", line, |
| from + l - 1); |
| q = true; |
| } |
| klass: do { |
| c = s.charAt(l); |
| l += 1; |
| switch (c) { |
| case '[': |
| case '^': |
| warningAt("Unescaped '{a}'.", |
| line, from + l, c); |
| q = true; |
| break; |
| case '-': |
| if (q) { |
| q = false; |
| } else { |
| warningAt("Unescaped '{a}'.", |
| line, from + l, '-'); |
| q = true; |
| } |
| break; |
| case ']': |
| if (!q) { |
| warningAt("Unescaped '{a}'.", |
| line, from + l - 1, '-'); |
| } |
| break klass; |
| case '\\': |
| c = s.charAt(l); |
| if (c < ' ') { |
| warningAt( |
| "Unexpected control character in regular expression.", line, from + l); |
| } else if (c === '<') { |
| warningAt( |
| "Unexpected escaped character '{a}' in regular expression.", line, from + l, c); |
| } |
| l += 1; |
| q = true; |
| break; |
| case '/': |
| warningAt("Unescaped '{a}'.", |
| line, from + l - 1, '/'); |
| q = true; |
| break; |
| case '<': |
| q = true; |
| break; |
| default: |
| q = true; |
| } |
| } while (c); |
| break; |
| case '.': |
| if (option.regexp) { |
| warningAt("Insecure '{a}'.", line, |
| from + l, c); |
| } |
| break; |
| case ']': |
| case '?': |
| case '{': |
| case '}': |
| case '+': |
| case '*': |
| warningAt("Unescaped '{a}'.", line, |
| from + l, c); |
| } |
| if (b) { |
| switch (s.charAt(l)) { |
| case '?': |
| case '+': |
| case '*': |
| l += 1; |
| if (s.charAt(l) === '?') { |
| l += 1; |
| } |
| break; |
| case '{': |
| l += 1; |
| c = s.charAt(l); |
| if (c < '0' || c > '9') { |
| warningAt( |
| "Expected a number and instead saw '{a}'.", line, from + l, c); |
| } |
| l += 1; |
| low = +c; |
| for (;;) { |
| c = s.charAt(l); |
| if (c < '0' || c > '9') { |
| break; |
| } |
| l += 1; |
| low = +c + (low * 10); |
| } |
| high = low; |
| if (c === ',') { |
| l += 1; |
| high = Infinity; |
| c = s.charAt(l); |
| if (c >= '0' && c <= '9') { |
| l += 1; |
| high = +c; |
| for (;;) { |
| c = s.charAt(l); |
| if (c < '0' || c > '9') { |
| break; |
| } |
| l += 1; |
| high = +c + (high * 10); |
| } |
| } |
| } |
| if (s.charAt(l) !== '}') { |
| warningAt( |
| "Expected '{a}' and instead saw '{b}'.", line, from + l, '}', c); |
| } else { |
| l += 1; |
| } |
| if (s.charAt(l) === '?') { |
| l += 1; |
| } |
| if (low > high) { |
| warningAt( |
| "'{a}' should not be greater than '{b}'.", line, from + l, low, high); |
| } |
| } |
| } |
| } |
| c = s.substr(0, l - 1); |
| character += l; |
| s = s.substr(l); |
| return it('(regexp)', c); |
| } |
| return it('(punctuator)', t); |
| |
| // punctuator |
| |
| case '#': |
| return it('(punctuator)', t); |
| default: |
| return it('(punctuator)', t); |
| } |
| } |
| } |
| } |
| }; |
| }()); |
| |
| |
| function addlabel(t, type) { |
| |
| if (t === 'hasOwnProperty') { |
| warning("'hasOwnProperty' is a really bad name."); |
| } |
| |
| // Define t in the current function in the current scope. |
| |
| if (is_own(funct, t) && !funct['(global)']) { |
| if (funct[t] === true) { |
| if (option.latedef) |
| warning("'{a}' was used before it was defined.", nexttoken, t); |
| } else { |
| if (!option.shadow) |
| warning("'{a}' is already defined.", nexttoken, t); |
| } |
| } |
| |
| funct[t] = type; |
| if (funct['(global)']) { |
| global[t] = funct; |
| if (is_own(implied, t)) { |
| if (option.latedef) |
| warning("'{a}' was used before it was defined.", nexttoken, t); |
| delete implied[t]; |
| } |
| } else { |
| scope[t] = funct; |
| } |
| } |
| |
| |
| function doOption() { |
| var b, obj, filter, o = nexttoken.value, t, v; |
| switch (o) { |
| case '*/': |
| error("Unbegun comment."); |
| break; |
| case '/*members': |
| case '/*member': |
| o = '/*members'; |
| if (!membersOnly) { |
| membersOnly = {}; |
| } |
| obj = membersOnly; |
| break; |
| case '/*jshint': |
| case '/*jslint': |
| obj = option; |
| filter = boolOptions; |
| break; |
| case '/*global': |
| obj = predefined; |
| break; |
| default: |
| error("What?"); |
| } |
| t = lex.token(); |
| loop: for (;;) { |
| for (;;) { |
| if (t.type === 'special' && t.value === '*/') { |
| break loop; |
| } |
| if (t.id !== '(endline)' && t.id !== ',') { |
| break; |
| } |
| t = lex.token(); |
| } |
| if (t.type !== '(string)' && t.type !== '(identifier)' && |
| o !== '/*members') { |
| error("Bad option.", t); |
| } |
| v = lex.token(); |
| if (v.id === ':') { |
| v = lex.token(); |
| if (obj === membersOnly) { |
| error("Expected '{a}' and instead saw '{b}'.", |
| t, '*/', ':'); |
| } |
| if (t.value === 'indent' && (o === '/*jshint' || o === '/*jslint')) { |
| b = +v.value; |
| if (typeof b !== 'number' || !isFinite(b) || b <= 0 || |
| Math.floor(b) !== b) { |
| error("Expected a small integer and instead saw '{a}'.", |
| v, v.value); |
| } |
| obj.white = true; |
| obj.indent = b; |
| } else if (t.value === 'maxerr' && (o === '/*jshint' || o === '/*jslint')) { |
| b = +v.value; |
| if (typeof b !== 'number' || !isFinite(b) || b <= 0 || |
| Math.floor(b) !== b) { |
| error("Expected a small integer and instead saw '{a}'.", |
| v, v.value); |
| } |
| obj.maxerr = b; |
| } else if (t.value === 'maxlen' && (o === '/*jshint' || o === '/*jslint')) { |
| b = +v.value; |
| if (typeof b !== 'number' || !isFinite(b) || b <= 0 || |
| Math.floor(b) !== b) { |
| error("Expected a small integer and instead saw '{a}'.", |
| v, v.value); |
| } |
| obj.maxlen = b; |
| } else if (v.value === 'true') { |
| obj[t.value] = true; |
| } else if (v.value === 'false') { |
| obj[t.value] = false; |
| } else { |
| error("Bad option value.", v); |
| } |
| t = lex.token(); |
| } else { |
| if (o === '/*jshint' || o === '/*jslint') { |
| error("Missing option value.", t); |
| } |
| obj[t.value] = false; |
| t = v; |
| } |
| } |
| if (filter) { |
| assume(); |
| } |
| } |
| |
| |
| // We need a peek function. If it has an argument, it peeks that much farther |
| // ahead. It is used to distinguish |
| // for ( var i in ... |
| // from |
| // for ( var i = ... |
| |
| function peek(p) { |
| var i = p || 0, j = 0, t; |
| |
| while (j <= i) { |
| t = lookahead[j]; |
| if (!t) { |
| t = lookahead[j] = lex.token(); |
| } |
| j += 1; |
| } |
| return t; |
| } |
| |
| |
| |
| // Produce the next token. It looks for programming errors. |
| |
| function advance(id, t) { |
| switch (token.id) { |
| case '(number)': |
| if (nexttoken.id === '.') { |
| warning("A dot following a number can be confused with a decimal point.", token); |
| } |
| break; |
| case '-': |
| if (nexttoken.id === '-' || nexttoken.id === '--') { |
| warning("Confusing minusses."); |
| } |
| break; |
| case '+': |
| if (nexttoken.id === '+' || nexttoken.id === '++') { |
| warning("Confusing plusses."); |
| } |
| break; |
| } |
| if (token.type === '(string)' || token.identifier) { |
| anonname = token.value; |
| } |
| |
| if (id && nexttoken.id !== id) { |
| if (t) { |
| if (nexttoken.id === '(end)') { |
| warning("Unmatched '{a}'.", t, t.id); |
| } else { |
| warning("Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", |
| nexttoken, id, t.id, t.line, nexttoken.value); |
| } |
| } else if (nexttoken.type !== '(identifier)' || |
| nexttoken.value !== id) { |
| warning("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, id, nexttoken.value); |
| } |
| } |
| prevtoken = token; |
| token = nexttoken; |
| for (;;) { |
| nexttoken = lookahead.shift() || lex.token(); |
| if (nexttoken.id === '(end)' || nexttoken.id === '(error)') { |
| return; |
| } |
| if (nexttoken.type === 'special') { |
| doOption(); |
| } else { |
| if (nexttoken.id !== '(endline)') { |
| break; |
| } |
| } |
| } |
| } |
| |
| |
| // This is the heart of JSHINT, the Pratt parser. In addition to parsing, it |
| // is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is |
| // like .nud except that it is only used on the first token of a statement. |
| // Having .fud makes it much easier to define statement-oriented languages like |
| // JavaScript. I retained Pratt's nomenclature. |
| |
| // .nud Null denotation |
| // .fud First null denotation |
| // .led Left denotation |
| // lbp Left binding power |
| // rbp Right binding power |
| |
| // They are elements of the parsing method called Top Down Operator Precedence. |
| |
| function expression(rbp, initial) { |
| var left, isArray = false; |
| |
| if (nexttoken.id === '(end)') |
| error("Unexpected early end of program.", token); |
| |
| advance(); |
| if (initial) { |
| anonname = 'anonymous'; |
| funct['(verb)'] = token.value; |
| } |
| if (initial === true && token.fud) { |
| left = token.fud(); |
| } else { |
| if (token.nud) { |
| left = token.nud(); |
| } else { |
| if (nexttoken.type === '(number)' && token.id === '.') { |
| warning("A leading decimal point can be confused with a dot: '.{a}'.", |
| token, nexttoken.value); |
| advance(); |
| return token; |
| } else { |
| error("Expected an identifier and instead saw '{a}'.", |
| token, token.id); |
| } |
| } |
| while (rbp < nexttoken.lbp) { |
| isArray = token.value == 'Array'; |
| advance(); |
| if (isArray && token.id == '(' && nexttoken.id == ')') |
| warning("Use the array literal notation [].", token); |
| if (token.led) { |
| left = token.led(left); |
| } else { |
| error("Expected an operator and instead saw '{a}'.", |
| token, token.id); |
| } |
| } |
| } |
| return left; |
| } |
| |
| |
| // Functions for conformance of style. |
| |
| function adjacent(left, right) { |
| left = left || token; |
| right = right || nexttoken; |
| if (option.white) { |
| if (left.character !== right.from && left.line === right.line) { |
| warning("Unexpected space after '{a}'.", right, left.value); |
| } |
| } |
| } |
| |
| function nobreak(left, right) { |
| left = left || token; |
| right = right || nexttoken; |
| if (option.white && (left.character !== right.from || left.line !== right.line)) { |
| warning("Unexpected space before '{a}'.", right, right.value); |
| } |
| } |
| |
| function nospace(left, right) { |
| left = left || token; |
| right = right || nexttoken; |
| if (option.white && !left.comment) { |
| if (left.line === right.line) { |
| adjacent(left, right); |
| } |
| } |
| } |
| |
| function nonadjacent(left, right) { |
| if (option.white) { |
| left = left || token; |
| right = right || nexttoken; |
| if (left.line === right.line && left.character === right.from) { |
| warning("Missing space after '{a}'.", |
| nexttoken, left.value); |
| } |
| } |
| } |
| |
| function nobreaknonadjacent(left, right) { |
| left = left || token; |
| right = right || nexttoken; |
| if (!option.laxbreak && left.line !== right.line) { |
| warning("Bad line breaking before '{a}'.", right, right.id); |
| } else if (option.white) { |
| left = left || token; |
| right = right || nexttoken; |
| if (left.character === right.from) { |
| warning("Missing space after '{a}'.", |
| nexttoken, left.value); |
| } |
| } |
| } |
| |
| function indentation(bias) { |
| var i; |
| if (option.white && nexttoken.id !== '(end)') { |
| i = indent + (bias || 0); |
| if (nexttoken.from !== i) { |
| warning( |
| "Expected '{a}' to have an indentation at {b} instead at {c}.", |
| nexttoken, nexttoken.value, i, nexttoken.from); |
| } |
| } |
| } |
| |
| function nolinebreak(t) { |
| t = t || token; |
| if (t.line !== nexttoken.line) { |
| warning("Line breaking error '{a}'.", t, t.value); |
| } |
| } |
| |
| |
| function comma() { |
| if (token.line !== nexttoken.line) { |
| if (!option.laxbreak) { |
| warning("Bad line breaking before '{a}'.", token, nexttoken.id); |
| } |
| } else if (token.character !== nexttoken.from && option.white) { |
| warning("Unexpected space after '{a}'.", nexttoken, token.value); |
| } |
| advance(','); |
| nonadjacent(token, nexttoken); |
| } |
| |
| |
| // Functional constructors for making the symbols that will be inherited by |
| // tokens. |
| |
| function symbol(s, p) { |
| var x = syntax[s]; |
| if (!x || typeof x !== 'object') { |
| syntax[s] = x = { |
| id: s, |
| lbp: p, |
| value: s |
| }; |
| } |
| return x; |
| } |
| |
| |
| function delim(s) { |
| return symbol(s, 0); |
| } |
| |
| |
| function stmt(s, f) { |
| var x = delim(s); |
| x.identifier = x.reserved = true; |
| x.fud = f; |
| return x; |
| } |
| |
| |
| function blockstmt(s, f) { |
| var x = stmt(s, f); |
| x.block = true; |
| return x; |
| } |
| |
| |
| function reserveName(x) { |
| var c = x.id.charAt(0); |
| if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) { |
| x.identifier = x.reserved = true; |
| } |
| return x; |
| } |
| |
| |
| function prefix(s, f) { |
| var x = symbol(s, 150); |
| reserveName(x); |
| x.nud = (typeof f === 'function') ? f : function () { |
| this.right = expression(150); |
| this.arity = 'unary'; |
| if (this.id === '++' || this.id === '--') { |
| if (option.plusplus) { |
| warning("Unexpected use of '{a}'.", this, this.id); |
| } else if ((!this.right.identifier || this.right.reserved) && |
| this.right.id !== '.' && this.right.id !== '[') { |
| warning("Bad operand.", this); |
| } |
| } |
| return this; |
| }; |
| return x; |
| } |
| |
| |
| function type(s, f) { |
| var x = delim(s); |
| x.type = s; |
| x.nud = f; |
| return x; |
| } |
| |
| |
| function reserve(s, f) { |
| var x = type(s, f); |
| x.identifier = x.reserved = true; |
| return x; |
| } |
| |
| |
| function reservevar(s, v) { |
| return reserve(s, function () { |
| if (typeof v === 'function') { |
| v(this); |
| } |
| return this; |
| }); |
| } |
| |
| |
| function infix(s, f, p, w) { |
| var x = symbol(s, p); |
| reserveName(x); |
| x.led = function (left) { |
| if (!w) { |
| nobreaknonadjacent(prevtoken, token); |
| nonadjacent(token, nexttoken); |
| } |
| if (typeof f === 'function') { |
| return f(left, this); |
| } else { |
| this.left = left; |
| this.right = expression(p); |
| return this; |
| } |
| }; |
| return x; |
| } |
| |
| |
| function relation(s, f) { |
| var x = symbol(s, 100); |
| x.led = function (left) { |
| nobreaknonadjacent(prevtoken, token); |
| nonadjacent(token, nexttoken); |
| var right = expression(100); |
| if ((left && left.id === 'NaN') || (right && right.id === 'NaN')) { |
| warning("Use the isNaN function to compare with NaN.", this); |
| } else if (f) { |
| f.apply(this, [left, right]); |
| } |
| if (left.id === '!') { |
| warning("Confusing use of '{a}'.", left, '!'); |
| } |
| if (right.id === '!') { |
| warning("Confusing use of '{a}'.", left, '!'); |
| } |
| this.left = left; |
| this.right = right; |
| return this; |
| }; |
| return x; |
| } |
| |
| |
| function isPoorRelation(node) { |
| return node && |
| ((node.type === '(number)' && +node.value === 0) || |
| (node.type === '(string)' && node.value === '') || |
| (node.type === 'null' && !option.eqnull) || |
| node.type === 'true' || |
| node.type === 'false' || |
| node.type === 'undefined'); |
| } |
| |
| |
| function assignop(s, f) { |
| symbol(s, 20).exps = true; |
| return infix(s, function (left, that) { |
| var l; |
| that.left = left; |
| if (predefined[left.value] === false && |
| scope[left.value]['(global)'] === true) { |
| warning("Read only.", left); |
| } else if (left['function']) { |
| warning("'{a}' is a function.", left, left.value); |
| } |
| if (left) { |
| if (left.id === '.' || left.id === '[') { |
| if (!left.left || left.left.value === 'arguments') { |
| warning('Bad assignment.', that); |
| } |
| that.right = expression(19); |
| return that; |
| } else if (left.identifier && !left.reserved) { |
| if (funct[left.value] === 'exception') { |
| warning("Do not assign to the exception parameter.", left); |
| } |
| that.right = expression(19); |
| return that; |
| } |
| if (left === syntax['function']) { |
| warning( |
| "Expected an identifier in an assignment and instead saw a function invocation.", |
| token); |
| } |
| } |
| error("Bad assignment.", that); |
| }, 20); |
| } |
| |
| |
| function bitwise(s, f, p) { |
| var x = symbol(s, p); |
| reserveName(x); |
| x.led = (typeof f === 'function') ? f : function (left) { |
| if (option.bitwise) { |
| warning("Unexpected use of '{a}'.", this, this.id); |
| } |
| this.left = left; |
| this.right = expression(p); |
| return this; |
| }; |
| return x; |
| } |
| |
| |
| function bitwiseassignop(s) { |
| symbol(s, 20).exps = true; |
| return infix(s, function (left, that) { |
| if (option.bitwise) { |
| warning("Unexpected use of '{a}'.", that, that.id); |
| } |
| nonadjacent(prevtoken, token); |
| nonadjacent(token, nexttoken); |
| if (left) { |
| if (left.id === '.' || left.id === '[' || |
| (left.identifier && !left.reserved)) { |
| expression(19); |
| return that; |
| } |
| if (left === syntax['function']) { |
| warning( |
| "Expected an identifier in an assignment, and instead saw a function invocation.", |
| token); |
| } |
| return that; |
| } |
| error("Bad assignment.", that); |
| }, 20); |
| } |
| |
| |
| function suffix(s, f) { |
| var x = symbol(s, 150); |
| x.led = function (left) { |
| if (option.plusplus) { |
| warning("Unexpected use of '{a}'.", this, this.id); |
| } else if ((!left.identifier || left.reserved) && |
| left.id !== '.' && left.id !== '[') { |
| warning("Bad operand.", this); |
| } |
| this.left = left; |
| return this; |
| }; |
| return x; |
| } |
| |
| |
| // fnparam means that this identifier is being defined as a function |
| // argument (see identifier()) |
| function optionalidentifier(fnparam) { |
| if (nexttoken.identifier) { |
| advance(); |
| if (token.reserved && !option.es5) { |
| // `undefined` as a function param is a common pattern to protect |
| // against the case when somebody does `undefined = true` and |
| // help with minification. More info: https://gist.github.com/315916 |
| if (!fnparam || token.value != 'undefined') { |
| warning("Expected an identifier and instead saw '{a}' (a reserved word).", |
| token, token.id); |
| } |
| } |
| return token.value; |
| } |
| } |
| |
| // fnparam means that this identifier is being defined as a function |
| // argument |
| function identifier(fnparam) { |
| var i = optionalidentifier(fnparam); |
| if (i) { |
| return i; |
| } |
| if (token.id === 'function' && nexttoken.id === '(') { |
| warning("Missing name in function declaration."); |
| } else { |
| error("Expected an identifier and instead saw '{a}'.", |
| nexttoken, nexttoken.value); |
| } |
| } |
| |
| |
| function reachable(s) { |
| var i = 0, t; |
| if (nexttoken.id !== ';' || noreach) { |
| return; |
| } |
| for (;;) { |
| t = peek(i); |
| if (t.reach) { |
| return; |
| } |
| if (t.id !== '(endline)') { |
| if (t.id === 'function') { |
| warning( |
| "Inner functions should be listed at the top of the outer function.", t); |
| break; |
| } |
| warning("Unreachable '{a}' after '{b}'.", t, t.value, s); |
| break; |
| } |
| i += 1; |
| } |
| } |
| |
| |
| function statement(noindent) { |
| var i = indent, r, s = scope, t = nexttoken; |
| |
| // We don't like the empty statement. |
| |
| if (t.id === ';') { |
| warning("Unnecessary semicolon.", t); |
| advance(';'); |
| return; |
| } |
| |
| // Is this a labelled statement? |
| |
| if (t.identifier && !t.reserved && peek().id === ':') { |
| advance(); |
| advance(':'); |
| scope = Object.create(s); |
| addlabel(t.value, 'label'); |
| if (!nexttoken.labelled) { |
| warning("Label '{a}' on {b} statement.", |
| nexttoken, t.value, nexttoken.value); |
| } |
| if (jx.test(t.value + ':')) { |
| warning("Label '{a}' looks like a javascript url.", |
| t, t.value); |
| } |
| nexttoken.label = t.value; |
| t = nexttoken; |
| } |
| |
| // Parse the statement. |
| |
| if (!noindent) { |
| indentation(); |
| } |
| r = expression(0, true); |
| |
| // Look for the final semicolon. |
| |
| if (!t.block) { |
| if (!option.expr && (!r || !r.exps)) { |
| warning("Expected an assignment or function call and instead saw an expression.", token); |
| } else if (option.nonew && r.id === '(' && r.left.id === 'new') { |
| warning("Do not use 'new' for side effects."); |
| } |
| if (nexttoken.id !== ';') { |
| if (!option.asi) { |
| warningAt("Missing semicolon.", token.line, token.from + token.value.length); |
| } |
| } else { |
| adjacent(token, nexttoken); |
| advance(';'); |
| nonadjacent(token, nexttoken); |
| } |
| } |
| |
| // Restore the indentation. |
| |
| indent = i; |
| scope = s; |
| return r; |
| } |
| |
| |
| function use_strict() { |
| if (nexttoken.value === 'use strict') { |
| if (strict_mode) { |
| warning("Unnecessary \"use strict\"."); |
| } |
| advance(); |
| advance(';'); |
| strict_mode = true; |
| option.newcap = true; |
| option.undef = true; |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| |
| function statements(begin) { |
| var a = [], f, p; |
| |
| while (!nexttoken.reach && nexttoken.id !== '(end)') { |
| if (nexttoken.id === ';') { |
| warning("Unnecessary semicolon."); |
| advance(';'); |
| } else { |
| a.push(statement()); |
| } |
| } |
| return a; |
| } |
| |
| |
| /* |
| * Parses a single block. A block is a sequence of statements wrapped in |
| * braces. |
| * |
| * ordinary - true for everything but function bodies and try blocks. |
| * stmt - true if block can be a single statement (e.g. in if/for/while). |
| */ |
| function block(ordinary, stmt) { |
| var a, |
| b = inblock, |
| old_indent = indent, |
| m = strict_mode, |
| s = scope, |
| t; |
| |
| inblock = ordinary; |
| scope = Object.create(scope); |
| nonadjacent(token, nexttoken); |
| t = nexttoken; |
| |
| if (nexttoken.id === '{') { |
| advance('{'); |
| if (nexttoken.id !== '}' || token.line !== nexttoken.line) { |
| indent += option.indent; |
| while (!ordinary && nexttoken.from > indent) { |
| indent += option.indent; |
| } |
| if (!ordinary && !use_strict() && !m && option.strict && |
| funct['(context)']['(global)']) { |
| warning("Missing \"use strict\" statement."); |
| } |
| a = statements(); |
| strict_mode = m; |
| indent -= option.indent; |
| indentation(); |
| } |
| advance('}', t); |
| indent = old_indent; |
| } else if (!ordinary) { |
| error("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, '{', nexttoken.value); |
| } else { |
| if (!stmt || option.curly) |
| warning("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, '{', nexttoken.value); |
| |
| noreach = true; |
| a = [statement()]; |
| noreach = false; |
| } |
| funct['(verb)'] = null; |
| scope = s; |
| inblock = b; |
| if (ordinary && option.noempty && (!a || a.length === 0)) { |
| warning("Empty block."); |
| } |
| return a; |
| } |
| |
| |
| function countMember(m) { |
| if (membersOnly && typeof membersOnly[m] !== 'boolean') { |
| warning("Unexpected /*member '{a}'.", token, m); |
| } |
| if (typeof member[m] === 'number') { |
| member[m] += 1; |
| } else { |
| member[m] = 1; |
| } |
| } |
| |
| |
| function note_implied(token) { |
| var name = token.value, line = token.line, a = implied[name]; |
| if (typeof a === 'function') { |
| a = false; |
| } |
| if (!a) { |
| a = [line]; |
| implied[name] = a; |
| } else if (a[a.length - 1] !== line) { |
| a.push(line); |
| } |
| } |
| |
| // Build the syntax table by declaring the syntactic elements of the language. |
| |
| type('(number)', function () { |
| return this; |
| }); |
| type('(string)', function () { |
| return this; |
| }); |
| |
| syntax['(identifier)'] = { |
| type: '(identifier)', |
| lbp: 0, |
| identifier: true, |
| nud: function () { |
| var v = this.value, |
| s = scope[v], |
| f; |
| if (typeof s === 'function') { |
| |
| // Protection against accidental inheritance. |
| |
| s = undefined; |
| } else if (typeof s === 'boolean') { |
| f = funct; |
| funct = functions[0]; |
| addlabel(v, 'var'); |
| s = funct; |
| funct = f; |
| } |
| |
| // The name is in scope and defined in the current function. |
| |
| if (funct === s) { |
| |
| // Change 'unused' to 'var', and reject labels. |
| |
| switch (funct[v]) { |
| case 'unused': |
| funct[v] = 'var'; |
| break; |
| case 'unction': |
| funct[v] = 'function'; |
| this['function'] = true; |
| break; |
| case 'function': |
| this['function'] = true; |
| break; |
| case 'label': |
| warning("'{a}' is a statement label.", token, v); |
| break; |
| } |
| |
| // The name is not defined in the function. If we are in the global scope, |
| // then we have an undefined variable. |
| // |
| // Operators typeof and delete do not raise runtime errors even if the base |
| // object of a reference is null so no need to display warning if we're |
| // inside of typeof or delete. |
| |
| } else if (funct['(global)']) { |
| if (anonname != 'typeof' && anonname != 'delete' && |
| option.undef && typeof predefined[v] !== 'boolean') { |
| warning("'{a}' is not defined.", token, v); |
| } |
| note_implied(token); |
| |
| // If the name is already defined in the current |
| // function, but not as outer, then there is a scope error. |
| |
| } else { |
| switch (funct[v]) { |
| case 'closure': |
| case 'function': |
| case 'var': |
| case 'unused': |
| warning("'{a}' used out of scope.", token, v); |
| break; |
| case 'label': |
| warning("'{a}' is a statement label.", token, v); |
| break; |
| case 'outer': |
| case 'global': |
| break; |
| default: |
| |
| // If the name is defined in an outer function, make an outer entry, and if |
| // it was unused, make it var. |
| |
| if (s === true) { |
| funct[v] = true; |
| } else if (s === null) { |
| warning("'{a}' is not allowed.", token, v); |
| note_implied(token); |
| } else if (typeof s !== 'object') { |
| |
| // Operators typeof and delete do not raise runtime errors even if the base object of |
| // a reference is null so no need to display warning if we're inside of typeof or delete. |
| |
| if (anonname != 'typeof' && anonname != 'delete' && option.undef) { |
| warning("'{a}' is not defined.", token, v); |
| } else { |
| funct[v] = true; |
| } |
| note_implied(token); |
| } else { |
| switch (s[v]) { |
| case 'function': |
| case 'unction': |
| this['function'] = true; |
| s[v] = 'closure'; |
| funct[v] = s['(global)'] ? 'global' : 'outer'; |
| break; |
| case 'var': |
| case 'unused': |
| s[v] = 'closure'; |
| funct[v] = s['(global)'] ? 'global' : 'outer'; |
| break; |
| case 'closure': |
| case 'parameter': |
| funct[v] = s['(global)'] ? 'global' : 'outer'; |
| break; |
| case 'label': |
| warning("'{a}' is a statement label.", token, v); |
| } |
| } |
| } |
| } |
| return this; |
| }, |
| led: function () { |
| error("Expected an operator and instead saw '{a}'.", |
| nexttoken, nexttoken.value); |
| } |
| }; |
| |
| type('(regexp)', function () { |
| return this; |
| }); |
| |
| |
| // ECMAScript parser |
| |
| delim('(endline)'); |
| delim('(begin)'); |
| delim('(end)').reach = true; |
| delim('</').reach = true; |
| delim('<!'); |
| delim('<!--'); |
| delim('-->'); |
| delim('(error)').reach = true; |
| delim('}').reach = true; |
| delim(')'); |
| delim(']'); |
| delim('"').reach = true; |
| delim("'").reach = true; |
| delim(';'); |
| delim(':').reach = true; |
| delim(','); |
| delim('#'); |
| delim('@'); |
| reserve('else'); |
| reserve('case').reach = true; |
| reserve('catch'); |
| reserve('default').reach = true; |
| reserve('finally'); |
| reservevar('arguments', function (x) { |
| if (strict_mode && funct['(global)']) { |
| warning("Strict violation.", x); |
| } |
| }); |
| reservevar('eval'); |
| reservevar('false'); |
| reservevar('Infinity'); |
| reservevar('NaN'); |
| reservevar('null'); |
| reservevar('this', function (x) { |
| if (strict_mode && ((funct['(statement)'] && |
| funct['(name)'].charAt(0) > 'Z') || funct['(global)'])) { |
| warning("Strict violation.", x); |
| } |
| }); |
| reservevar('true'); |
| reservevar('undefined'); |
| assignop('=', 'assign', 20); |
| assignop('+=', 'assignadd', 20); |
| assignop('-=', 'assignsub', 20); |
| assignop('*=', 'assignmult', 20); |
| assignop('/=', 'assigndiv', 20).nud = function () { |
| error("A regular expression literal can be confused with '/='."); |
| }; |
| assignop('%=', 'assignmod', 20); |
| bitwiseassignop('&=', 'assignbitand', 20); |
| bitwiseassignop('|=', 'assignbitor', 20); |
| bitwiseassignop('^=', 'assignbitxor', 20); |
| bitwiseassignop('<<=', 'assignshiftleft', 20); |
| bitwiseassignop('>>=', 'assignshiftright', 20); |
| bitwiseassignop('>>>=', 'assignshiftrightunsigned', 20); |
| infix('?', function (left, that) { |
| that.left = left; |
| that.right = expression(10); |
| advance(':'); |
| that['else'] = expression(10); |
| return that; |
| }, 30); |
| |
| infix('||', 'or', 40); |
| infix('&&', 'and', 50); |
| bitwise('|', 'bitor', 70); |
| bitwise('^', 'bitxor', 80); |
| bitwise('&', 'bitand', 90); |
| relation('==', function (left, right) { |
| var eqnull = option.eqnull && |
| (left.value == 'null' || right.value == 'null'); |
| |
| if (!eqnull && option.eqeqeq) { |
| warning("Expected '{a}' and instead saw '{b}'.", |
| this, '===', '=='); |
| } else if (isPoorRelation(left)) { |
| warning("Use '{a}' to compare with '{b}'.", |
| this, '===', left.value); |
| } else if (isPoorRelation(right)) { |
| warning("Use '{a}' to compare with '{b}'.", |
| this, '===', right.value); |
| } |
| return this; |
| }); |
| relation('==='); |
| relation('!=', function (left, right) { |
| if (option.eqeqeq) { |
| warning("Expected '{a}' and instead saw '{b}'.", |
| this, '!==', '!='); |
| } else if (isPoorRelation(left)) { |
| warning("Use '{a}' to compare with '{b}'.", |
| this, '!==', left.value); |
| } else if (isPoorRelation(right)) { |
| warning("Use '{a}' to compare with '{b}'.", |
| this, '!==', right.value); |
| } |
| return this; |
| }); |
| relation('!=='); |
| relation('<'); |
| relation('>'); |
| relation('<='); |
| relation('>='); |
| bitwise('<<', 'shiftleft', 120); |
| bitwise('>>', 'shiftright', 120); |
| bitwise('>>>', 'shiftrightunsigned', 120); |
| infix('in', 'in', 120); |
| infix('instanceof', 'instanceof', 120); |
| infix('+', function (left, that) { |
| var right = expression(130); |
| if (left && right && left.id === '(string)' && right.id === '(string)') { |
| left.value += right.value; |
| left.character = right.character; |
| if (jx.test(left.value)) { |
| warning("JavaScript URL.", left); |
| } |
| return left; |
| } |
| that.left = left; |
| that.right = right; |
| return that; |
| }, 130); |
| prefix('+', 'num'); |
| prefix('+++', function () { |
| warning("Confusing pluses."); |
| this.right = expression(150); |
| this.arity = 'unary'; |
| return this; |
| }); |
| infix('+++', function (left) { |
| warning("Confusing pluses."); |
| this.left = left; |
| this.right = expression(130); |
| return this; |
| }, 130); |
| infix('-', 'sub', 130); |
| prefix('-', 'neg'); |
| prefix('---', function () { |
| warning("Confusing minuses."); |
| this.right = expression(150); |
| this.arity = 'unary'; |
| return this; |
| }); |
| infix('---', function (left) { |
| warning("Confusing minuses."); |
| this.left = left; |
| this.right = expression(130); |
| return this; |
| }, 130); |
| infix('*', 'mult', 140); |
| infix('/', 'div', 140); |
| infix('%', 'mod', 140); |
| |
| suffix('++', 'postinc'); |
| prefix('++', 'preinc'); |
| syntax['++'].exps = true; |
| |
| suffix('--', 'postdec'); |
| prefix('--', 'predec'); |
| syntax['--'].exps = true; |
| prefix('delete', function () { |
| var p = expression(0); |
| if (!p || (p.id !== '.' && p.id !== '[')) { |
| warning("Variables should not be deleted."); |
| } |
| this.first = p; |
| return this; |
| }).exps = true; |
| |
| prefix('~', function () { |
| if (option.bitwise) { |
| warning("Unexpected '{a}'.", this, '~'); |
| } |
| expression(150); |
| return this; |
| }); |
| |
| prefix('!', function () { |
| this.right = expression(150); |
| this.arity = 'unary'; |
| if (bang[this.right.id] === true) { |
| warning("Confusing use of '{a}'.", this, '!'); |
| } |
| return this; |
| }); |
| prefix('typeof', 'typeof'); |
| prefix('new', function () { |
| var c = expression(155), i; |
| if (c && c.id !== 'function') { |
| if (c.identifier) { |
| c['new'] = true; |
| switch (c.value) { |
| case 'Object': |
| warning("Use the object literal notation {}.", token); |
| break; |
| case 'Number': |
| case 'String': |
| case 'Boolean': |
| case 'Math': |
| case 'JSON': |
| warning("Do not use {a} as a constructor.", token, c.value); |
| break; |
| case 'Function': |
| if (!option.evil) { |
| warning("The Function constructor is eval."); |
| } |
| break; |
| case 'Date': |
| case 'RegExp': |
| break; |
| default: |
| if (c.id !== 'function') { |
| i = c.value.substr(0, 1); |
| if (option.newcap && (i < 'A' || i > 'Z')) { |
| warning("A constructor name should start with an uppercase letter.", token); |
| } |
| } |
| } |
| } else { |
| if (c.id !== '.' && c.id !== '[' && c.id !== '(') { |
| warning("Bad constructor.", token); |
| } |
| } |
| } else { |
| if (!option.supernew) |
| warning("Weird construction. Delete 'new'.", this); |
| } |
| adjacent(token, nexttoken); |
| if (nexttoken.id !== '(' && !option.supernew) { |
| warning("Missing '()' invoking a constructor."); |
| } |
| this.first = c; |
| return this; |
| }); |
| syntax['new'].exps = true; |
| |
| prefix('void').exps = true; |
| |
| infix('.', function (left, that) { |
| adjacent(prevtoken, token); |
| nobreak(); |
| var m = identifier(); |
| if (typeof m === 'string') { |
| countMember(m); |
| } |
| that.left = left; |
| that.right = m; |
| if (option.noarg && left && left.value === 'arguments' && |
| (m === 'callee' || m === 'caller')) { |
| warning("Avoid arguments.{a}.", left, m); |
| } else if (!option.evil && left && left.value === 'document' && |
| (m === 'write' || m === 'writeln')) { |
| warning("document.write can be a form of eval.", left); |
| } |
| if (!option.evil && (m === 'eval' || m === 'execScript')) { |
| warning('eval is evil.'); |
| } |
| return that; |
| }, 160, true); |
| |
| infix('(', function (left, that) { |
| if (prevtoken.id !== '}' && prevtoken.id !== ')') { |
| nobreak(prevtoken, token); |
| } |
| nospace(); |
| if (option.immed && !left.immed && left.id === 'function') { |
| warning("Wrap an immediate function invocation in parentheses " + |
| "to assist the reader in understanding that the expression " + |
| "is the result of a function, and not the function itself."); |
| } |
| var n = 0, |
| p = []; |
| if (left) { |
| if (left.type === '(identifier)') { |
| if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { |
| if (left.value !== 'Number' && left.value !== 'String' && |
| left.value !== 'Boolean' && |
| left.value !== 'Date') { |
| if (left.value === 'Math') { |
| warning("Math is not a function.", left); |
| } else if (option.newcap) { |
| warning( |
| "Missing 'new' prefix when invoking a constructor.", left); |
| } |
| } |
| } |
| } |
| } |
| if (nexttoken.id !== ')') { |
| for (;;) { |
| p[p.length] = expression(10); |
| n += 1; |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| comma(); |
| } |
| } |
| advance(')'); |
| nospace(prevtoken, token); |
| if (typeof left === 'object') { |
| if (left.value === 'parseInt' && n === 1) { |
| warning("Missing radix parameter.", left); |
| } |
| if (!option.evil) { |
| if (left.value === 'eval' || left.value === 'Function' || |
| left.value === 'execScript') { |
| warning("eval is evil.", left); |
| } else if (p[0] && p[0].id === '(string)' && |
| (left.value === 'setTimeout' || |
| left.value === 'setInterval')) { |
| warning( |
| "Implied eval is evil. Pass a function instead of a string.", left); |
| } |
| } |
| if (!left.identifier && left.id !== '.' && left.id !== '[' && |
| left.id !== '(' && left.id !== '&&' && left.id !== '||' && |
| left.id !== '?') { |
| warning("Bad invocation.", left); |
| } |
| } |
| that.left = left; |
| return that; |
| }, 155, true).exps = true; |
| |
| prefix('(', function () { |
| nospace(); |
| if (nexttoken.id === 'function') { |
| nexttoken.immed = true; |
| } |
| var v = expression(0); |
| advance(')', this); |
| nospace(prevtoken, token); |
| if (option.immed && v.id === 'function') { |
| if (nexttoken.id === '(') { |
| warning( |
| "Move the invocation into the parens that contain the function.", nexttoken); |
| } else { |
| warning( |
| "Do not wrap function literals in parens unless they are to be immediately invoked.", |
| this); |
| } |
| } |
| return v; |
| }); |
| |
| infix('[', function (left, that) { |
| nobreak(prevtoken, token); |
| nospace(); |
| var e = expression(0), s; |
| if (e && e.type === '(string)') { |
| if (!option.evil && (e.value === 'eval' || e.value === 'execScript')) { |
| warning("eval is evil.", that); |
| } |
| countMember(e.value); |
| if (!option.sub && ix.test(e.value)) { |
| s = syntax[e.value]; |
| if (!s || !s.reserved) { |
| warning("['{a}'] is better written in dot notation.", |
| e, e.value); |
| } |
| } |
| } |
| advance(']', that); |
| nospace(prevtoken, token); |
| that.left = left; |
| that.right = e; |
| return that; |
| }, 160, true); |
| |
| prefix('[', function () { |
| var b = token.line !== nexttoken.line; |
| this.first = []; |
| if (b) { |
| indent += option.indent; |
| if (nexttoken.from === indent + option.indent) { |
| indent += option.indent; |
| } |
| } |
| while (nexttoken.id !== '(end)') { |
| while (nexttoken.id === ',') { |
| warning("Extra comma."); |
| advance(','); |
| } |
| if (nexttoken.id === ']') { |
| break; |
| } |
| if (b && token.line !== nexttoken.line) { |
| indentation(); |
| } |
| this.first.push(expression(10)); |
| if (nexttoken.id === ',') { |
| comma(); |
| if (nexttoken.id === ']' && !option.es5) { |
| warning("Extra comma.", token); |
| break; |
| } |
| } else { |
| break; |
| } |
| } |
| if (b) { |
| indent -= option.indent; |
| indentation(); |
| } |
| advance(']', this); |
| return this; |
| }, 160); |
| |
| |
| function property_name() { |
| var id = optionalidentifier(true); |
| if (!id) { |
| if (nexttoken.id === '(string)') { |
| id = nexttoken.value; |
| advance(); |
| } else if (nexttoken.id === '(number)') { |
| id = nexttoken.value.toString(); |
| advance(); |
| } |
| } |
| return id; |
| } |
| |
| |
| function functionparams() { |
| var i, t = nexttoken, p = []; |
| advance('('); |
| nospace(); |
| if (nexttoken.id === ')') { |
| advance(')'); |
| nospace(prevtoken, token); |
| return; |
| } |
| for (;;) { |
| i = identifier(true); |
| p.push(i); |
| addlabel(i, 'parameter'); |
| if (nexttoken.id === ',') { |
| comma(); |
| } else { |
| advance(')', t); |
| nospace(prevtoken, token); |
| return p; |
| } |
| } |
| } |
| |
| |
| function doFunction(i, statement) { |
| var f, |
| oldOption = option, |
| oldScope = scope; |
| |
| option = Object.create(option); |
| scope = Object.create(scope); |
| |
| funct = { |
| '(name)' : i || '"' + anonname + '"', |
| '(line)' : nexttoken.line, |
| '(context)' : funct, |
| '(breakage)' : 0, |
| '(loopage)' : 0, |
| '(scope)' : scope, |
| '(statement)': statement |
| }; |
| f = funct; |
| token.funct = funct; |
| functions.push(funct); |
| if (i) { |
| addlabel(i, 'function'); |
| } |
| funct['(params)'] = functionparams(); |
| |
| block(false); |
| scope = oldScope; |
| option = oldOption; |
| funct['(last)'] = token.line; |
| funct = funct['(context)']; |
| return f; |
| } |
| |
| |
| (function (x) { |
| x.nud = function () { |
| var b, f, i, j, p, seen = {}, t; |
| |
| b = token.line !== nexttoken.line; |
| if (b) { |
| indent += option.indent; |
| if (nexttoken.from === indent + option.indent) { |
| indent += option.indent; |
| } |
| } |
| for (;;) { |
| if (nexttoken.id === '}') { |
| break; |
| } |
| if (b) { |
| indentation(); |
| } |
| if (nexttoken.value === 'get' && peek().id !== ':') { |
| advance('get'); |
| if (!option.es5) { |
| error("get/set are ES5 features."); |
| } |
| i = property_name(); |
| if (!i) { |
| error("Missing property name."); |
| } |
| t = nexttoken; |
| adjacent(token, nexttoken); |
| f = doFunction(); |
| if (!option.loopfunc && funct['(loopage)']) { |
| warning("Don't make functions within a loop.", t); |
| } |
| p = f['(params)']; |
| if (p) { |
| warning("Unexpected parameter '{a}' in get {b} function.", t, p[0], i); |
| } |
| adjacent(token, nexttoken); |
| advance(','); |
| indentation(); |
| advance('set'); |
| j = property_name(); |
| if (i !== j) { |
| error("Expected {a} and instead saw {b}.", token, i, j); |
| } |
| t = nexttoken; |
| adjacent(token, nexttoken); |
| f = doFunction(); |
| p = f['(params)']; |
| if (!p || p.length !== 1 || p[0] !== 'value') { |
| warning("Expected (value) in set {a} function.", t, i); |
| } |
| } else { |
| i = property_name(); |
| if (typeof i !== 'string') { |
| break; |
| } |
| advance(':'); |
| nonadjacent(token, nexttoken); |
| expression(10); |
| } |
| if (seen[i] === true) { |
| warning("Duplicate member '{a}'.", nexttoken, i); |
| } |
| seen[i] = true; |
| countMember(i); |
| if (nexttoken.id === ',') { |
| comma(); |
| if (nexttoken.id === ',') { |
| warning("Extra comma.", token); |
| } else if (nexttoken.id === '}' && !option.es5) { |
| warning("Extra comma.", token); |
| } |
| } else { |
| break; |
| } |
| } |
| if (b) { |
| indent -= option.indent; |
| indentation(); |
| } |
| advance('}', this); |
| return this; |
| }; |
| x.fud = function () { |
| error("Expected to see a statement and instead saw a block.", token); |
| }; |
| }(delim('{'))); |
| |
| var varstatement = stmt('var', function (prefix) { |
| // JavaScript does not have block scope. It only has function scope. So, |
| // declaring a variable in a block can have unexpected consequences. |
| var id, name, value; |
| |
| if (funct['(onevar)'] && option.onevar) { |
| warning("Too many var statements."); |
| } else if (!funct['(global)']) { |
| funct['(onevar)'] = true; |
| } |
| this.first = []; |
| for (;;) { |
| nonadjacent(token, nexttoken); |
| id = identifier(); |
| if (funct['(global)'] && predefined[id] === false) { |
| warning("Redefinition of '{a}'.", token, id); |
| } |
| addlabel(id, 'unused'); |
| if (prefix) { |
| break; |
| } |
| name = token; |
| this.first.push(token); |
| if (nexttoken.id === '=') { |
| nonadjacent(token, nexttoken); |
| advance('='); |
| nonadjacent(token, nexttoken); |
| if (nexttoken.id === 'undefined') { |
| warning("It is not necessary to initialize '{a}' to 'undefined'.", token, id); |
| } |
| if (peek(0).id === '=' && nexttoken.identifier) { |
| error("Variable {a} was not declared correctly.", |
| nexttoken, nexttoken.value); |
| } |
| value = expression(0); |
| name.first = value; |
| } |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| comma(); |
| } |
| return this; |
| }); |
| varstatement.exps = true; |
| |
| blockstmt('function', function () { |
| if (inblock) { |
| warning( |
| "Function declarations should not be placed in blocks. Use a function expression or move the statement to the top of the outer function.", token); |
| |
| } |
| var i = identifier(); |
| adjacent(token, nexttoken); |
| addlabel(i, 'unction'); |
| doFunction(i, true); |
| if (nexttoken.id === '(' && nexttoken.line === token.line) { |
| error( |
| "Function declarations are not invocable. Wrap the whole function invocation in parens."); |
| } |
| return this; |
| }); |
| |
| prefix('function', function () { |
| var i = optionalidentifier(); |
| if (i) { |
| adjacent(token, nexttoken); |
| } else { |
| nonadjacent(token, nexttoken); |
| } |
| doFunction(i); |
| if (!option.loopfunc && funct['(loopage)']) { |
| warning("Don't make functions within a loop."); |
| } |
| return this; |
| }); |
| |
| blockstmt('if', function () { |
| var t = nexttoken; |
| advance('('); |
| nonadjacent(this, t); |
| nospace(); |
| expression(20); |
| if (nexttoken.id === '=') { |
| if (!option.boss) |
| warning("Expected a conditional expression and instead saw an assignment."); |
| advance('='); |
| expression(20); |
| } |
| advance(')', t); |
| nospace(prevtoken, token); |
| block(true, true); |
| if (nexttoken.id === 'else') { |
| nonadjacent(token, nexttoken); |
| advance('else'); |
| if (nexttoken.id === 'if' || nexttoken.id === 'switch') { |
| statement(true); |
| } else { |
| block(true, true); |
| } |
| } |
| return this; |
| }); |
| |
| blockstmt('try', function () { |
| var b, e, s; |
| |
| block(false); |
| if (nexttoken.id === 'catch') { |
| advance('catch'); |
| nonadjacent(token, nexttoken); |
| advance('('); |
| s = scope; |
| scope = Object.create(s); |
| e = nexttoken.value; |
| if (nexttoken.type !== '(identifier)') { |
| warning("Expected an identifier and instead saw '{a}'.", |
| nexttoken, e); |
| } else { |
| addlabel(e, 'exception'); |
| } |
| advance(); |
| advance(')'); |
| block(false); |
| b = true; |
| scope = s; |
| } |
| if (nexttoken.id === 'finally') { |
| advance('finally'); |
| block(false); |
| return; |
| } else if (!b) { |
| error("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, 'catch', nexttoken.value); |
| } |
| return this; |
| }); |
| |
| blockstmt('while', function () { |
| var t = nexttoken; |
| funct['(breakage)'] += 1; |
| funct['(loopage)'] += 1; |
| advance('('); |
| nonadjacent(this, t); |
| nospace(); |
| expression(20); |
| if (nexttoken.id === '=') { |
| if (!option.boss) |
| warning("Expected a conditional expression and instead saw an assignment."); |
| advance('='); |
| expression(20); |
| } |
| advance(')', t); |
| nospace(prevtoken, token); |
| block(true, true); |
| funct['(breakage)'] -= 1; |
| funct['(loopage)'] -= 1; |
| return this; |
| }).labelled = true; |
| |
| reserve('with'); |
| |
| blockstmt('switch', function () { |
| var t = nexttoken, |
| g = false; |
| funct['(breakage)'] += 1; |
| advance('('); |
| nonadjacent(this, t); |
| nospace(); |
| this.condition = expression(20); |
| advance(')', t); |
| nospace(prevtoken, token); |
| nonadjacent(token, nexttoken); |
| t = nexttoken; |
| advance('{'); |
| nonadjacent(token, nexttoken); |
| indent += option.indent; |
| this.cases = []; |
| for (;;) { |
| switch (nexttoken.id) { |
| case 'case': |
| switch (funct['(verb)']) { |
| case 'break': |
| case 'case': |
| case 'continue': |
| case 'return': |
| case 'switch': |
| case 'throw': |
| break; |
| default: |
| // You can tell JSHint that you don't use break intentionally by |
| // adding a comment /* falls through */ on a line just before |
| // the next `case`. |
| if (!ft.test(lines[nexttoken.line - 2])) { |
| warning( |
| "Expected a 'break' statement before 'case'.", |
| token); |
| } |
| } |
| indentation(-option.indent); |
| advance('case'); |
| this.cases.push(expression(20)); |
| g = true; |
| advance(':'); |
| funct['(verb)'] = 'case'; |
| break; |
| case 'default': |
| switch (funct['(verb)']) { |
| case 'break': |
| case 'continue': |
| case 'return': |
| case 'throw': |
| break; |
| default: |
| if (!ft.test(lines[nexttoken.line - 2])) { |
| warning( |
| "Expected a 'break' statement before 'default'.", |
| token); |
| } |
| } |
| indentation(-option.indent); |
| advance('default'); |
| g = true; |
| advance(':'); |
| break; |
| case '}': |
| indent -= option.indent; |
| indentation(); |
| advance('}', t); |
| if (this.cases.length === 1 || this.condition.id === 'true' || |
| this.condition.id === 'false') { |
| warning("This 'switch' should be an 'if'.", this); |
| } |
| funct['(breakage)'] -= 1; |
| funct['(verb)'] = undefined; |
| return; |
| case '(end)': |
| error("Missing '{a}'.", nexttoken, '}'); |
| return; |
| default: |
| if (g) { |
| switch (token.id) { |
| case ',': |
| error("Each value should have its own case label."); |
| return; |
| case ':': |
| statements(); |
| break; |
| default: |
| error("Missing ':' on a case clause.", token); |
| } |
| } else { |
| error("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, 'case', nexttoken.value); |
| } |
| } |
| } |
| }).labelled = true; |
| |
| stmt('debugger', function () { |
| if (!option.debug) { |
| warning("All 'debugger' statements should be removed."); |
| } |
| return this; |
| }).exps = true; |
| |
| (function () { |
| var x = stmt('do', function () { |
| funct['(breakage)'] += 1; |
| funct['(loopage)'] += 1; |
| this.first = block(true); |
| advance('while'); |
| var t = nexttoken; |
| nonadjacent(token, t); |
| advance('('); |
| nospace(); |
| expression(20); |
| if (nexttoken.id === '=') { |
| if (!option.boss) |
| warning("Expected a conditional expression and instead saw an assignment."); |
| advance('='); |
| expression(20); |
| } |
| advance(')', t); |
| nospace(prevtoken, token); |
| funct['(breakage)'] -= 1; |
| funct['(loopage)'] -= 1; |
| return this; |
| }); |
| x.labelled = true; |
| x.exps = true; |
| }()); |
| |
| blockstmt('for', function () { |
| var s, t = nexttoken; |
| funct['(breakage)'] += 1; |
| funct['(loopage)'] += 1; |
| advance('('); |
| nonadjacent(this, t); |
| nospace(); |
| if (peek(nexttoken.id === 'var' ? 1 : 0).id === 'in') { |
| if (nexttoken.id === 'var') { |
| advance('var'); |
| varstatement.fud.call(varstatement, true); |
| } else { |
| switch (funct[nexttoken.value]) { |
| case 'unused': |
| funct[nexttoken.value] = 'var'; |
| break; |
| case 'var': |
| break; |
| default: |
| warning("Bad for in variable '{a}'.", |
| nexttoken, nexttoken.value); |
| } |
| advance(); |
| } |
| advance('in'); |
| expression(20); |
| advance(')', t); |
| s = block(true, true); |
| if (option.forin && (s.length > 1 || typeof s[0] !== 'object' || |
| s[0].value !== 'if')) { |
| warning("The body of a for in should be wrapped in an if statement to filter unwanted properties from the prototype.", this); |
| } |
| funct['(breakage)'] -= 1; |
| funct['(loopage)'] -= 1; |
| return this; |
| } else { |
| if (nexttoken.id !== ';') { |
| if (nexttoken.id === 'var') { |
| advance('var'); |
| varstatement.fud.call(varstatement); |
| } else { |
| for (;;) { |
| expression(0, 'for'); |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| comma(); |
| } |
| } |
| } |
| nolinebreak(token); |
| advance(';'); |
| if (nexttoken.id !== ';') { |
| expression(20); |
| if (nexttoken.id === '=') { |
| if (!option.boss) |
| warning("Expected a conditional expression and instead saw an assignment."); |
| advance('='); |
| expression(20); |
| } |
| } |
| nolinebreak(token); |
| advance(';'); |
| if (nexttoken.id === ';') { |
| error("Expected '{a}' and instead saw '{b}'.", |
| nexttoken, ')', ';'); |
| } |
| if (nexttoken.id !== ')') { |
| for (;;) { |
| expression(0, 'for'); |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| comma(); |
| } |
| } |
| advance(')', t); |
| nospace(prevtoken, token); |
| block(true, true); |
| funct['(breakage)'] -= 1; |
| funct['(loopage)'] -= 1; |
| return this; |
| } |
| }).labelled = true; |
| |
| |
| stmt('break', function () { |
| var v = nexttoken.value; |
| if (funct['(breakage)'] === 0) { |
| warning("Unexpected '{a}'.", nexttoken, this.value); |
| } |
| nolinebreak(this); |
| if (nexttoken.id !== ';') { |
| if (token.line === nexttoken.line) { |
| if (funct[v] !== 'label') { |
| warning("'{a}' is not a statement label.", nexttoken, v); |
| } else if (scope[v] !== funct) { |
| warning("'{a}' is out of scope.", nexttoken, v); |
| } |
| this.first = nexttoken; |
| advance(); |
| } |
| } |
| reachable('break'); |
| return this; |
| }).exps = true; |
| |
| |
| stmt('continue', function () { |
| var v = nexttoken.value; |
| if (funct['(breakage)'] === 0) { |
| warning("Unexpected '{a}'.", nexttoken, this.value); |
| } |
| nolinebreak(this); |
| if (nexttoken.id !== ';') { |
| if (token.line === nexttoken.line) { |
| if (funct[v] !== 'label') { |
| warning("'{a}' is not a statement label.", nexttoken, v); |
| } else if (scope[v] !== funct) { |
| warning("'{a}' is out of scope.", nexttoken, v); |
| } |
| this.first = nexttoken; |
| advance(); |
| } |
| } else if (!funct['(loopage)']) { |
| warning("Unexpected '{a}'.", nexttoken, this.value); |
| } |
| reachable('continue'); |
| return this; |
| }).exps = true; |
| |
| |
| stmt('return', function () { |
| nolinebreak(this); |
| if (nexttoken.id === '(regexp)') { |
| warning("Wrap the /regexp/ literal in parens to disambiguate the slash operator."); |
| } |
| if (nexttoken.id !== ';' && !nexttoken.reach) { |
| nonadjacent(token, nexttoken); |
| this.first = expression(20); |
| } |
| reachable('return'); |
| return this; |
| }).exps = true; |
| |
| |
| stmt('throw', function () { |
| nolinebreak(this); |
| nonadjacent(token, nexttoken); |
| this.first = expression(20); |
| reachable('throw'); |
| return this; |
| }).exps = true; |
| |
| // Superfluous reserved words |
| |
| reserve('class'); |
| reserve('const'); |
| reserve('enum'); |
| reserve('export'); |
| reserve('extends'); |
| reserve('import'); |
| reserve('super'); |
| |
| reserve('let'); |
| reserve('yield'); |
| reserve('implements'); |
| reserve('interface'); |
| reserve('package'); |
| reserve('private'); |
| reserve('protected'); |
| reserve('public'); |
| reserve('static'); |
| |
| |
| // Parse JSON |
| |
| function jsonValue() { |
| |
| function jsonObject() { |
| var o = {}, t = nexttoken; |
| advance('{'); |
| if (nexttoken.id !== '}') { |
| for (;;) { |
| if (nexttoken.id === '(end)') { |
| error("Missing '}' to match '{' from line {a}.", |
| nexttoken, t.line); |
| } else if (nexttoken.id === '}') { |
| warning("Unexpected comma.", token); |
| break; |
| } else if (nexttoken.id === ',') { |
| error("Unexpected comma.", nexttoken); |
| } else if (nexttoken.id !== '(string)') { |
| warning("Expected a string and instead saw {a}.", |
| nexttoken, nexttoken.value); |
| } |
| if (o[nexttoken.value] === true) { |
| warning("Duplicate key '{a}'.", |
| nexttoken, nexttoken.value); |
| } else if (nexttoken.value === '__proto__') { |
| warning("Stupid key '{a}'.", |
| nexttoken, nexttoken.value); |
| } else { |
| o[nexttoken.value] = true; |
| } |
| advance(); |
| advance(':'); |
| jsonValue(); |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| advance(','); |
| } |
| } |
| advance('}'); |
| } |
| |
| function jsonArray() { |
| var t = nexttoken; |
| advance('['); |
| if (nexttoken.id !== ']') { |
| for (;;) { |
| if (nexttoken.id === '(end)') { |
| error("Missing ']' to match '[' from line {a}.", |
| nexttoken, t.line); |
| } else if (nexttoken.id === ']') { |
| warning("Unexpected comma.", token); |
| break; |
| } else if (nexttoken.id === ',') { |
| error("Unexpected comma.", nexttoken); |
| } |
| jsonValue(); |
| if (nexttoken.id !== ',') { |
| break; |
| } |
| advance(','); |
| } |
| } |
| advance(']'); |
| } |
| |
| switch (nexttoken.id) { |
| case '{': |
| jsonObject(); |
| break; |
| case '[': |
| jsonArray(); |
| break; |
| case 'true': |
| case 'false': |
| case 'null': |
| case '(number)': |
| case '(string)': |
| advance(); |
| break; |
| case '-': |
| advance('-'); |
| if (token.character !== nexttoken.from) { |
| warning("Unexpected space after '-'.", token); |
| } |
| adjacent(token, nexttoken); |
| advance('(number)'); |
| break; |
| default: |
| error("Expected a JSON value.", nexttoken); |
| } |
| } |
| |
| |
| // The actual JSHINT function itself. |
| |
| var itself = function (s, o, g) { |
| var a, i, k; |
| JSHINT.errors = []; |
| predefined = Object.create(standard); |
| combine(predefined, g || {}); |
| if (o) { |
| a = o.predef; |
| if (a) { |
| if (Array.isArray(a)) { |
| for (i = 0; i < a.length; i += 1) { |
| predefined[a[i]] = true; |
| } |
| } else if (typeof a === 'object') { |
| k = Object.keys(a); |
| for (i = 0; i < k.length; i += 1) { |
| predefined[k[i]] = !!a[k]; |
| } |
| } |
| } |
| option = o; |
| } else { |
| option = {}; |
| } |
| option.indent = option.indent || 4; |
| option.maxerr = option.maxerr || 50; |
| |
| tab = ''; |
| for (i = 0; i < option.indent; i += 1) { |
| tab += ' '; |
| } |
| indent = 1; |
| global = Object.create(predefined); |
| scope = global; |
| funct = { |
| '(global)': true, |
| '(name)': '(global)', |
| '(scope)': scope, |
| '(breakage)': 0, |
| '(loopage)': 0 |
| }; |
| functions = [funct]; |
| urls = []; |
| src = false; |
| stack = null; |
| member = {}; |
| membersOnly = null; |
| implied = {}; |
| inblock = false; |
| lookahead = []; |
| jsonmode = false; |
| warnings = 0; |
| lex.init(s); |
| prereg = true; |
| strict_mode = false; |
| |
| prevtoken = token = nexttoken = syntax['(begin)']; |
| assume(); |
| |
| try { |
| advance(); |
| switch (nexttoken.id) { |
| case '{': |
| case '[': |
| option.laxbreak = true; |
| jsonmode = true; |
| jsonValue(); |
| break; |
| default: |
| if (nexttoken.value === 'use strict') { |
| if (!option.globalstrict) |
| warning("Use the function form of \"use strict\"."); |
| use_strict(); |
| } |
| statements('lib'); |
| } |
| advance('(end)'); |
| } catch (e) { |
| if (e) { |
| JSHINT.errors.push({ |
| reason : e.message, |
| line : e.line || nexttoken.line, |
| character : e.character || nexttoken.from |
| }, null); |
| } |
| } |
| return JSHINT.errors.length === 0; |
| }; |
| |
| |
| // Data summary. |
| |
| itself.data = function () { |
| |
| var data = {functions: []}, fu, globals, implieds = [], f, i, j, |
| members = [], n, unused = [], v; |
| if (itself.errors.length) { |
| data.errors = itself.errors; |
| } |
| |
| if (jsonmode) { |
| data.json = true; |
| } |
| |
| for (n in implied) { |
| if (is_own(implied, n)) { |
| implieds.push({ |
| name: n, |
| line: implied[n] |
| }); |
| } |
| } |
| if (implieds.length > 0) { |
| data.implieds = implieds; |
| } |
| |
| if (urls.length > 0) { |
| data.urls = urls; |
| } |
| |
| globals = Object.keys(scope); |
| if (globals.length > 0) { |
| data.globals = globals; |
| } |
| |
| for (i = 1; i < functions.length; i += 1) { |
| f = functions[i]; |
| fu = {}; |
| for (j = 0; j < functionicity.length; j += 1) { |
| fu[functionicity[j]] = []; |
| } |
| for (n in f) { |
| if (is_own(f, n) && n.charAt(0) !== '(') { |
| v = f[n]; |
| if (v === 'unction') { |
| v = 'unused'; |
| } |
| if (Array.isArray(fu[v])) { |
| fu[v].push(n); |
| if (v === 'unused') { |
| unused.push({ |
| name: n, |
| line: f['(line)'], |
| 'function': f['(name)'] |
| }); |
| } |
| } |
| } |
| } |
| for (j = 0; j < functionicity.length; j += 1) { |
| if (fu[functionicity[j]].length === 0) { |
| delete fu[functionicity[j]]; |
| } |
| } |
| fu.name = f['(name)']; |
| fu.param = f['(params)']; |
| fu.line = f['(line)']; |
| fu.last = f['(last)']; |
| data.functions.push(fu); |
| } |
| |
| if (unused.length > 0) { |
| data.unused = unused; |
| } |
| |
| members = []; |
| for (n in member) { |
| if (typeof member[n] === 'number') { |
| data.member = member; |
| break; |
| } |
| } |
| |
| return data; |
| }; |
| |
| itself.report = function (option) { |
| var data = itself.data(); |
| |
| var a = [], c, e, err, f, i, k, l, m = '', n, o = [], s; |
| |
| function detail(h, array) { |
| var b, i, singularity; |
| if (array) { |
| o.push('<div><i>' + h + '</i> '); |
| array = array.sort(); |
| for (i = 0; i < array.length; i += 1) { |
| if (array[i] !== singularity) { |
| singularity = array[i]; |
| o.push((b ? ', ' : '') + singularity); |
| b = true; |
| } |
| } |
| o.push('</div>'); |
| } |
| } |
| |
| |
| if (data.errors || data.implieds || data.unused) { |
| err = true; |
| o.push('<div id=errors><i>Error:</i>'); |
| if (data.errors) { |
| for (i = 0; i < data.errors.length; i += 1) { |
| c = data.errors[i]; |
| if (c) { |
| e = c.evidence || ''; |
| o.push('<p>Problem' + (isFinite(c.line) ? ' at line ' + |
| c.line + ' character ' + c.character : '') + |
| ': ' + c.reason.entityify() + |
| '</p><p class=evidence>' + |
| (e && (e.length > 80 ? e.slice(0, 77) + '...' : |
| e).entityify()) + '</p>'); |
| } |
| } |
| } |
| |
| if (data.implieds) { |
| s = []; |
| for (i = 0; i < data.implieds.length; i += 1) { |
| s[i] = '<code>' + data.implieds[i].name + '</code> <i>' + |
| data.implieds[i].line + '</i>'; |
| } |
| o.push('<p><i>Implied global:</i> ' + s.join(', ') + '</p>'); |
| } |
| |
| if (data.unused) { |
| s = []; |
| for (i = 0; i < data.unused.length; i += 1) { |
| s[i] = '<code><u>' + data.unused[i].name + '</u></code> <i>' + |
| data.unused[i].line + '</i> <code>' + |
| data.unused[i]['function'] + '</code>'; |
| } |
| o.push('<p><i>Unused variable:</i> ' + s.join(', ') + '</p>'); |
| } |
| if (data.json) { |
| o.push('<p>JSON: bad.</p>'); |
| } |
| o.push('</div>'); |
| } |
| |
| if (!option) { |
| |
| o.push('<br><div id=functions>'); |
| |
| if (data.urls) { |
| detail("URLs<br>", data.urls, '<br>'); |
| } |
| |
| if (data.json && !err) { |
| o.push('<p>JSON: good.</p>'); |
| } else if (data.globals) { |
| o.push('<div><i>Global</i> ' + |
| data.globals.sort().join(', ') + '</div>'); |
| } else { |
| o.push('<div><i>No new global variables introduced.</i></div>'); |
| } |
| |
| for (i = 0; i < data.functions.length; i += 1) { |
| f = data.functions[i]; |
| |
| o.push('<br><div class=function><i>' + f.line + '-' + |
| f.last + '</i> ' + (f.name || '') + '(' + |
| (f.param ? f.param.join(', ') : '') + ')</div>'); |
| detail('<big><b>Unused</b></big>', f.unused); |
| detail('Closure', f.closure); |
| detail('Variable', f['var']); |
| detail('Exception', f.exception); |
| detail('Outer', f.outer); |
| detail('Global', f.global); |
| detail('Label', f.label); |
| } |
| |
| if (data.member) { |
| a = Object.keys(data.member); |
| if (a.length) { |
| a = a.sort(); |
| m = '<br><pre id=members>/*members '; |
| l = 10; |
| for (i = 0; i < a.length; i += 1) { |
| k = a[i]; |
| n = k.name(); |
| if (l + n.length > 72) { |
| o.push(m + '<br>'); |
| m = ' '; |
| l = 1; |
| } |
| l += n.length + 2; |
| if (data.member[k] === 1) { |
| n = '<i>' + n + '</i>'; |
| } |
| if (i < a.length - 1) { |
| n += ', '; |
| } |
| m += n; |
| } |
| o.push(m + '<br>*/</pre>'); |
| } |
| o.push('</div>'); |
| } |
| } |
| return o.join(''); |
| }; |
| itself.jshint = itself; |
| |
| itself.edition = '2011-04-16'; |
| |
| return itself; |
| |
| }()); |
| |
| // Make JSHINT a Node module, if possible. |
| if (typeof exports == 'object' && exports) |
| exports.JSHINT = JSHINT; |
