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Diffstat (limited to 'xstatic/pkg/jquery_ui/data/external/jshint.js')
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diff --git a/xstatic/pkg/jquery_ui/data/external/jshint.js b/xstatic/pkg/jquery_ui/data/external/jshint.js new file mode 100644 index 0000000..8f06d9b --- /dev/null +++ b/xstatic/pkg/jquery_ui/data/external/jshint.js @@ -0,0 +1,4835 @@ +/*! + * JSHint, by JSHint Community. + * + * This file (and this file only) is 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 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 1) at which the lint was found + character : The character (relative to 1) 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 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, + character: NUMBER, + last: NUMBER, + lastcharacter: NUMBER, + param: [ + STRING + ], + closure: [ + STRING + ], + var: [ + STRING + ], + exception: [ + STRING + ], + outer: [ + STRING + ], + unused: [ + STRING + ], + global: [ + STRING + ], + label: [ + STRING + ] + ], + globals: [ + STRING + ], + member: { + STRING: NUMBER + }, + unused: [ + { + 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, + undef: true, maxlen: 100, indent: 4, quotmark: double, unused: true +*/ + +/*members "\b", "\t", "\n", "\f", "\r", "!=", "!==", "\"", "%", "(begin)", + "(breakage)", "(character)", "(context)", "(error)", "(explicitNewcap)", "(global)", + "(identifier)", "(last)", "(lastcharacter)", "(line)", "(loopage)", "(metrics)", + "(name)", "(onevar)", "(params)", "(scope)", "(statement)", "(verb)", "(tokens)", "(catch)", + "*", "+", "++", "-", "--", "\/", "<", "<=", "==", + "===", ">", ">=", $, $$, $A, $F, $H, $R, $break, $continue, $w, Abstract, Ajax, + __filename, __dirname, ActiveXObject, Array, ArrayBuffer, ArrayBufferView, Audio, + Autocompleter, Asset, Boolean, Builder, Buffer, Browser, Blob, COM, CScript, Canvas, + CustomAnimation, Class, Control, ComplexityCount, Chain, Color, Cookie, Core, DataView, Date, + Debug, Draggable, Draggables, Droppables, Document, DomReady, DOMEvent, DOMReady, DOMParser, + Drag, E, Enumerator, Enumerable, Element, Elements, Error, Effect, EvalError, Event, + Events, FadeAnimation, Field, Flash, Float32Array, Float64Array, Form, + FormField, Frame, FormData, Function, Fx, GetObject, Group, Hash, HotKey, + HTMLElement, HTMLAnchorElement, HTMLBaseElement, HTMLBlockquoteElement, + HTMLBodyElement, HTMLBRElement, HTMLButtonElement, HTMLCanvasElement, HTMLDirectoryElement, + HTMLDivElement, HTMLDListElement, HTMLFieldSetElement, + HTMLFontElement, HTMLFormElement, HTMLFrameElement, HTMLFrameSetElement, + HTMLHeadElement, HTMLHeadingElement, HTMLHRElement, HTMLHtmlElement, + HTMLIFrameElement, HTMLImageElement, HTMLInputElement, HTMLIsIndexElement, + HTMLLabelElement, HTMLLayerElement, HTMLLegendElement, HTMLLIElement, + HTMLLinkElement, HTMLMapElement, HTMLMenuElement, HTMLMetaElement, + HTMLModElement, HTMLObjectElement, HTMLOListElement, HTMLOptGroupElement, + HTMLOptionElement, HTMLParagraphElement, HTMLParamElement, HTMLPreElement, + HTMLQuoteElement, HTMLScriptElement, HTMLSelectElement, HTMLStyleElement, + HtmlTable, HTMLTableCaptionElement, HTMLTableCellElement, HTMLTableColElement, + HTMLTableElement, HTMLTableRowElement, HTMLTableSectionElement, + HTMLTextAreaElement, HTMLTitleElement, HTMLUListElement, HTMLVideoElement, + Iframe, IframeShim, Image, importScripts, Int16Array, Int32Array, Int8Array, + Insertion, InputValidator, JSON, Keyboard, Locale, LN10, LN2, LOG10E, LOG2E, + MAX_VALUE, MIN_VALUE, Map, Mask, Math, MenuItem, MessageChannel, MessageEvent, MessagePort, + MoveAnimation, MooTools, MutationObserver, NaN, Native, NEGATIVE_INFINITY, Node, NodeFilter, + Number, Object, ObjectRange, + Option, Options, OverText, PI, POSITIVE_INFINITY, PeriodicalExecuter, Point, Position, Prototype, + RangeError, Rectangle, ReferenceError, RegExp, ResizeAnimation, Request, RotateAnimation, Set, + SQRT1_2, SQRT2, ScrollBar, ScriptEngine, ScriptEngineBuildVersion, + ScriptEngineMajorVersion, ScriptEngineMinorVersion, Scriptaculous, Scroller, + Slick, Slider, Selector, SharedWorker, String, Style, SyntaxError, Sortable, Sortables, + SortableObserver, Sound, Spinner, System, Swiff, Text, TextArea, Template, + Timer, Tips, Type, TypeError, Toggle, Try, "use strict", unescape, URI, URIError, URL, + VBArray, WeakMap, WSH, WScript, XDomainRequest, Web, Window, XMLDOM, XMLHttpRequest, XMLSerializer, + XPathEvaluator, XPathException, XPathExpression, XPathNamespace, XPathNSResolver, XPathResult, + "\\", a, abs, addEventListener, address, alert, apply, applicationCache, arguments, arity, + asi, atob, b, basic, basicToken, bitwise, blacklist, block, blur, boolOptions, boss, + browser, btoa, c, call, callee, caller, camelcase, cases, charAt, charCodeAt, character, + clearInterval, clearTimeout, close, closed, closure, comment, complexityCount, condition, + confirm, console, constructor, content, couch, create, css, curly, d, data, datalist, dd, debug, + decodeURI, decodeURIComponent, defaultStatus, defineClass, deserialize, devel, document, + dojo, dijit, dojox, define, else, emit, encodeURI, encodeURIComponent, elem, + eqeq, eqeqeq, eqnull, errors, es5, escape, esnext, eval, event, evidence, evil, + ex, exception, exec, exps, expr, exports, FileReader, first, floor, focus, forEach, + forin, fragment, frames, from, fromCharCode, fud, funcscope, funct, function, functions, + g, gc, getComputedStyle, getRow, getter, getterToken, GLOBAL, global, globals, globalstrict, + hasOwnProperty, help, history, i, id, identifier, immed, implieds, importPackage, include, + indent, indexOf, init, ins, internals, instanceOf, isAlpha, isApplicationRunning, isArray, + isDigit, isFinite, isNaN, iterator, java, join, jshint, + JSHINT, json, jquery, jQuery, keys, label, labelled, last, lastcharacter, lastsemic, laxbreak, + laxcomma, latedef, lbp, led, left, length, line, load, loadClass, localStorage, location, + log, loopfunc, m, match, max, maxcomplexity, maxdepth, maxerr, maxlen, maxstatements, maxparams, + member, message, meta, module, moveBy, moveTo, mootools, multistr, name, navigator, new, newcap, + nestedBlockDepth, noarg, node, noempty, nomen, nonew, nonstandard, nud, onbeforeunload, onblur, + onerror, onevar, onecase, onfocus, onload, onresize, onunload, open, openDatabase, openURL, + opener, opera, options, outer, param, parent, parseFloat, parseInt, passfail, plusplus, + postMessage, pop, predef, print, process, prompt, proto, prototype, prototypejs, provides, push, + quit, quotmark, range, raw, reach, reason, regexp, readFile, readUrl, regexdash, + removeEventListener, replace, report, require, reserved, resizeBy, resizeTo, resolvePath, + resumeUpdates, respond, rhino, right, runCommand, scroll, scope, screen, scripturl, scrollBy, + scrollTo, scrollbar, search, seal, self, send, serialize, sessionStorage, setInterval, setTimeout, + setter, setterToken, shift, slice, smarttabs, sort, spawn, split, statement, statementCount, stack, + status, start, strict, sub, substr, supernew, shadow, supplant, sum, sync, test, toLowerCase, + toString, toUpperCase, toint32, token, tokens, top, trailing, type, typeOf, Uint16Array, + Uint32Array, Uint8Array, undef, undefs, unused, urls, validthis, value, valueOf, var, vars, + version, verifyMaxParametersPerFunction, verifyMaxStatementsPerFunction, + verifyMaxComplexityPerFunction, verifyMaxNestedBlockDepthPerFunction, WebSocket, withstmt, white, + window, windows, Worker, worker, wsh, yui, YUI, Y, YUI_config*/ + +/*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 + camelcase : true, // if identifiers should be required in camel case + couch : true, // if CouchDB globals should be predefined + curly : true, // if curly braces around all blocks should be required + debug : true, // if debugger statements should be allowed + devel : true, // if logging globals should be predefined (console, + // alert, etc.) + dojo : true, // if Dojo Toolkit globals should be predefined + eqeqeq : true, // if === should be required + eqnull : true, // if == null comparisons should be tolerated + es5 : true, // if ES5 syntax should be allowed + esnext : true, // if es.next specific 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 + funcscope : true, // if only function scope should be used for scope tests + globalstrict: true, // if global "use strict"; should be allowed (also + // enables 'strict') + immed : true, // if immediate invocations must be wrapped in parens + iterator : true, // if the `__iterator__` property should be allowed + jquery : true, // if jQuery globals should be predefined + lastsemic : true, // if semicolons may be ommitted for the trailing + // statements inside of a one-line blocks. + latedef : true, // if the use before definition should not be tolerated + laxbreak : true, // if line breaks should not be checked + laxcomma : true, // if line breaks should not be checked around commas + loopfunc : true, // if functions should be allowed to be defined within + // loops + mootools : true, // if MooTools globals should be predefined + multistr : true, // allow multiline strings + 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 + nonstandard : true, // if non-standard (but widely adopted) globals should + // be predefined + nomen : true, // if names should be checked + onevar : true, // if only one var statement per function should be + // allowed + onecase : true, // if one case switch statements should be allowed + passfail : true, // if the scan should stop on first error + plusplus : true, // if increment/decrement should not be allowed + proto : true, // if the `__proto__` property should be allowed + prototypejs : true, // if Prototype and Scriptaculous globals should be + // predefined + regexdash : true, // if unescaped first/last dash (-) inside brackets + // should be tolerated + 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 + unused : true, // if variables should be always used + scripturl : true, // if script-targeted URLs should be tolerated + shadow : true, // if variable shadowing should be tolerated + smarttabs : true, // if smarttabs should be tolerated + // (http://www.emacswiki.org/emacs/SmartTabs) + 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 + trailing : true, // if trailing whitespace rules apply + validthis : true, // if 'this' inside a non-constructor function is valid. + // This is a function scoped option only. + withstmt : true, // if with statements should be allowed + white : true, // if strict whitespace rules apply + worker : true, // if Web Worker script symbols should be allowed + wsh : true, // if the Windows Scripting Host environment globals + // should be predefined + yui : true // YUI variables should be predefined + }, + + // These are the JSHint options that can take any value + // (we use this object to detect invalid options) + valOptions = { + maxlen : false, + indent : false, + maxerr : false, + predef : false, + quotmark : false, //'single'|'double'|true + scope : false, + maxstatements: false, // {int} max statements per function + maxdepth : false, // {int} max nested block depth per function + maxparams : false, // {int} max params per function + maxcomplexity: false // {int} max cyclomatic complexity per function + }, + + // These are JSHint boolean options which are shared with JSLint + // where the definition in JSHint is opposite JSLint + invertedOptions = { + bitwise : true, + forin : true, + newcap : true, + nomen : true, + plusplus : true, + regexp : true, + undef : true, + white : true, + + // Inverted and renamed, use JSHint name here + eqeqeq : true, + onevar : true + }, + + // These are JSHint boolean options which are shared with JSLint + // where the name has been changed but the effect is unchanged + renamedOptions = { + eqeq : "eqeqeq", + vars : "onevar", + windows : "wsh" + }, + + + // browser contains a set of global names which are commonly provided by a + // web browser environment. + browser = { + ArrayBuffer : false, + ArrayBufferView : false, + Audio : false, + Blob : false, + addEventListener : false, + applicationCache : false, + atob : false, + blur : false, + btoa : false, + clearInterval : false, + clearTimeout : false, + close : false, + closed : false, + DataView : false, + DOMParser : false, + defaultStatus : false, + document : false, + event : false, + FileReader : false, + Float32Array : false, + Float64Array : false, + FormData : false, + focus : false, + frames : false, + getComputedStyle : false, + HTMLElement : false, + HTMLAnchorElement : false, + HTMLBaseElement : false, + HTMLBlockquoteElement : false, + HTMLBodyElement : false, + HTMLBRElement : false, + HTMLButtonElement : false, + HTMLCanvasElement : false, + HTMLDirectoryElement : false, + HTMLDivElement : false, + HTMLDListElement : false, + HTMLFieldSetElement : false, + HTMLFontElement : false, + HTMLFormElement : false, + HTMLFrameElement : false, + HTMLFrameSetElement : false, + HTMLHeadElement : false, + HTMLHeadingElement : false, + HTMLHRElement : false, + HTMLHtmlElement : false, + HTMLIFrameElement : false, + HTMLImageElement : false, + HTMLInputElement : false, + HTMLIsIndexElement : false, + HTMLLabelElement : false, + HTMLLayerElement : false, + HTMLLegendElement : false, + HTMLLIElement : false, + HTMLLinkElement : false, + HTMLMapElement : false, + HTMLMenuElement : false, + HTMLMetaElement : false, + HTMLModElement : false, + HTMLObjectElement : false, + HTMLOListElement : false, + HTMLOptGroupElement : false, + HTMLOptionElement : false, + HTMLParagraphElement : false, + HTMLParamElement : false, + HTMLPreElement : false, + HTMLQuoteElement : false, + HTMLScriptElement : false, + HTMLSelectElement : false, + HTMLStyleElement : false, + HTMLTableCaptionElement : false, + HTMLTableCellElement : false, + HTMLTableColElement : false, + HTMLTableElement : false, + HTMLTableRowElement : false, + HTMLTableSectionElement : false, + HTMLTextAreaElement : false, + HTMLTitleElement : false, + HTMLUListElement : false, + HTMLVideoElement : false, + history : false, + Int16Array : false, + Int32Array : false, + Int8Array : false, + Image : false, + length : false, + localStorage : false, + location : false, + MessageChannel : false, + MessageEvent : false, + MessagePort : false, + moveBy : false, + moveTo : false, + MutationObserver : false, + name : false, + Node : false, + NodeFilter : 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, + sessionStorage : false, + setInterval : false, + setTimeout : false, + SharedWorker : false, + status : false, + top : false, + Uint16Array : false, + Uint32Array : false, + Uint8Array : false, + WebSocket : false, + window : false, + Worker : false, + XMLHttpRequest : false, + XMLSerializer : 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, + provides : false + }, + + declared, // Globals that were declared using /*global ... */ syntax. + + devel = { + alert : false, + confirm : false, + console : false, + Debug : false, + opera : false, + prompt : false + }, + + dojo = { + dojo : false, + dijit : false, + dojox : false, + define : false, + "require" : false + }, + + 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, + Asset : false, + Browser : false, + Chain : false, + Class : false, + Color : false, + Cookie : false, + Core : false, + Document : false, + DomReady : false, + DOMEvent : 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, + Buffer : false, + console : false, + exports : true, // In Node it is ok to exports = module.exports = foo(); + GLOBAL : false, + global : false, + module : false, + process : false, + require : false, + setTimeout : false, + clearTimeout : false, + setInterval : false, + clearInterval : 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 + }, + + quotmark, + + rhino = { + defineClass : false, + deserialize : false, + gc : false, + help : false, + importPackage: false, + "java" : 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 + 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, + Map : false, + Math : false, + NaN : false, + Number : false, + Object : false, + parseInt : false, + parseFloat : false, + RangeError : false, + ReferenceError : false, + RegExp : false, + Set : false, + String : false, + SyntaxError : false, + TypeError : false, + URIError : false, + WeakMap : false + }, + + // widely adopted global names that are not part of ECMAScript standard + nonstandard = { + escape : false, + unescape : false + }, + + directive, + syntax = {}, + tab, + token, + unuseds, + urls, + useESNextSyntax, + warnings, + + worker = { + importScripts : true, + postMessage : true, + self : true + }, + + wsh = { + ActiveXObject : true, + Enumerator : true, + GetObject : true, + ScriptEngine : true, + ScriptEngineBuildVersion : true, + ScriptEngineMajorVersion : true, + ScriptEngineMinorVersion : true, + VBArray : true, + WSH : true, + WScript : true, + XDomainRequest : true + }, + + yui = { + YUI : false, + Y : false, + YUI_config : false + }; + // Regular expressions. Some of these are stupidly long. + var ax, cx, tx, nx, nxg, lx, ix, jx, ft; + (function () { + /*jshint maxlen:300 */ + + // 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*([(){}\[.,:;'"~\?\]#@]|==?=?|\/=(?!(\S*\/[gim]?))|\/(\*(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); + } + + function checkOption(name, t) { + if (valOptions[name] === undefined && boolOptions[name] === undefined) { + warning("Bad option: '" + name + "'.", t); + } + } + + function isString(obj) { + return Object.prototype.toString.call(obj) === "[object String]"; + } + + // Provide critical ES5 functions to ES3. + + if (typeof Array.isArray !== "function") { + Array.isArray = function (o) { + return Object.prototype.toString.apply(o) === "[object Array]"; + }; + } + + if (!Array.prototype.forEach) { + Array.prototype.forEach = function (fn, scope) { + var len = this.length; + + for (var i = 0; i < len; i++) { + fn.call(scope || this, this[i], i, this); + } + }; + } + + if (!Array.prototype.indexOf) { + Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) { + if (this === null || this === undefined) { + throw new TypeError(); + } + + var t = new Object(this); + var len = t.length >>> 0; + + if (len === 0) { + return -1; + } + + var n = 0; + if (arguments.length > 0) { + n = Number(arguments[1]); + if (n != n) { // shortcut for verifying if it's NaN + n = 0; + } else if (n !== 0 && n != Infinity && n != -Infinity) { + n = (n > 0 || -1) * Math.floor(Math.abs(n)); + } + } + + if (n >= len) { + return -1; + } + + var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0); + for (; k < len; k++) { + if (k in t && t[k] === searchElement) { + return k; + } + } + + return -1; + }; + } + + 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 + + function isAlpha(str) { + return (str >= "a" && str <= "z\uffff") || + (str >= "A" && str <= "Z\uffff"); + } + + function isDigit(str) { + return (str >= "0" && str <= "9"); + } + + function isIdentifier(token, value) { + if (!token) + return false; + + if (!token.identifier || token.value !== value) + return false; + + return true; + } + + function supplant(str, data) { + return str.replace(/\{([^{}]*)\}/g, function (a, b) { + var r = data[b]; + return typeof r === "string" || typeof r === "number" ? r : a; + }); + } + + function combine(t, o) { + var n; + for (n in o) { + if (is_own(o, n) && !is_own(JSHINT.blacklist, n)) { + t[n] = o[n]; + } + } + } + + function updatePredefined() { + Object.keys(JSHINT.blacklist).forEach(function (key) { + delete predefined[key]; + }); + } + + 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); + option.globalstrict = true; + } + + if (option.devel) { + combine(predefined, devel); + } + + if (option.dojo) { + combine(predefined, dojo); + } + + if (option.browser) { + combine(predefined, browser); + } + + if (option.nonstandard) { + combine(predefined, nonstandard); + } + + if (option.jquery) { + combine(predefined, jquery); + } + + if (option.mootools) { + combine(predefined, mootools); + } + + if (option.worker) { + combine(predefined, worker); + } + + if (option.wsh) { + combine(predefined, wsh); + } + + if (option.esnext) { + useESNextSyntax(); + } + + if (option.globalstrict && option.strict !== false) { + option.strict = true; + } + + if (option.yui) { + combine(predefined, yui); + } + } + + + // Produce an error warning. + function quit(message, line, chr) { + var percentage = Math.floor((line / lines.length) * 100); + + throw { + name: "JSHintError", + line: line, + character: chr, + message: message + " (" + percentage + "% scanned).", + raw: message + }; + } + + function isundef(scope, m, t, a) { + return JSHINT.undefs.push([scope, m, t, a]); + } + + 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, + scope: JSHINT.scope, + a: a, + b: b, + c: c, + d: d + }; + w.reason = supplant(m, 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) { + warning(m, t, a, b, c, d); + } + + function errorAt(m, l, ch, a, b, c, d) { + return error(m, { + line: l, + from: ch + }, a, b, c, d); + } + + // Tracking of "internal" scripts, like eval containing a static string + function addInternalSrc(elem, src) { + var i; + i = { + id: "(internal)", + elem: elem, + value: src + }; + JSHINT.internals.push(i); + return i; + } + + +// lexical analysis and token construction + + var lex = (function lex() { + var character, from, line, s; + +// Private lex methods + + function nextLine() { + var at, + match, + tw; // trailing whitespace check + + if (line >= lines.length) + return false; + + character = 1; + s = lines[line]; + line += 1; + + // If smarttabs option is used check for spaces followed by tabs only. + // Otherwise check for any occurence of mixed tabs and spaces. + // Tabs and one space followed by block comment is allowed. + if (option.smarttabs) { + // negative look-behind for "//" + match = s.match(/(\/\/)? \t/); + at = match && !match[1] ? 0 : -1; + } else { + at = s.search(/ \t|\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 = option.trailing && s.match(/^(.*?)\s+$/); + if (tw && !/^\s+$/.test(s)) { + warningAt("Trailing whitespace.", line, tw[1].length + 1); + } + return true; + } + +// Produce a token object. The token inherits from a syntax symbol. + + function it(type, value) { + var i, t; + + function checkName(name) { + if (!option.proto && name === "__proto__") { + warningAt("The '{a}' property is deprecated.", line, from, name); + return; + } + + if (!option.iterator && name === "__iterator__") { + warningAt("'{a}' is only available in JavaScript 1.7.", line, from, name); + return; + } + + // Check for dangling underscores unless we're in Node + // environment and this identifier represents built-in + // Node globals with underscores. + + var hasDangling = /^(_+.*|.*_+)$/.test(name); + + if (option.nomen && hasDangling && name !== "_") { + if (option.node && token.id !== "." && /^(__dirname|__filename)$/.test(name)) + return; + + warningAt("Unexpected {a} in '{b}'.", line, from, "dangling '_'", name); + return; + } + + // Check for non-camelcase names. Names like MY_VAR and + // _myVar are okay though. + + if (option.camelcase) { + if (name.replace(/^_+/, "").indexOf("_") > -1 && !name.match(/^[A-Z0-9_]*$/)) { + warningAt("Identifier '{a}' is not in camel case.", line, from, value); + } + } + } + + 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 (!option.scripturl && jx.test(value)) { + warningAt("Script URL.", line, from); + } + } + + if (type === "(identifier)") { + t.identifier = true; + checkName(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" || + i === "case"); + } + 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, isLiteral, isInRange, n; + + 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 = "", allowNewLine = false; + + if (jsonmode && x !== "\"") { + warningAt("Strings must use doublequote.", + line, character); + } + + if (option.quotmark) { + if (option.quotmark === "single" && x !== "'") { + warningAt("Strings must use singlequote.", + line, character); + } else if (option.quotmark === "double" && x !== "\"") { + warningAt("Strings must use doublequote.", + line, character); + } else if (option.quotmark === true) { + quotmark = quotmark || x; + if (quotmark !== x) { + warningAt("Mixed double and single quotes.", + 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; + +unclosedString: + for (;;) { + while (j >= s.length) { + j = 0; + + var cl = line, cf = from; + if (!nextLine()) { + errorAt("Unclosed string.", cl, cf); + break unclosedString; + } + + if (allowNewLine) { + allowNewLine = false; + } else { + warningAt("Unclosed string.", cl, cf); + } + } + + 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); + n = s.charAt(j + 1); + 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 "0": + c = "\0"; + // Octal literals fail in strict mode + // check if the number is between 00 and 07 + // where 'n' is the token next to 'c' + if (n >= 0 && n <= 7 && directive["use strict"]) { + warningAt( + "Octal literals are not allowed in strict mode.", + line, character); + } + 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; + case "": + // last character is escape character + // always allow new line if escaped, but show + // warning if option is not set + allowNewLine = true; + if (option.multistr) { + if (jsonmode) { + warningAt("Avoid EOL escapement.", line, character); + } + c = ""; + character -= 1; + break; + } + warningAt("Bad escapement of EOL. Use option multistr if needed.", + line, character); + break; + case "!": + if (s.charAt(j - 2) === "<") + break; + /*falls through*/ + 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)); + s = ""; + } + } else { + + // identifier + + if (isAlpha(c) || c === "_" || c === "$") { + return it("(identifier)", t); + } + + // number + + if (isDigit(c)) { + if (!isFinite(Number(t))) { + warningAt("Bad number '{a}'.", + line, character, t); + } + if (isAlpha(s.substr(0, 1))) { + warningAt("Missing space after '{a}'.", + line, character, t); + } + if (c === "0") { + d = t.substr(1, 1); + if (isDigit(d)) { + 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 "//": + s = ""; + token.comment = true; + break; + + // /* comment + + case "/*": + for (;;) { + i = s.search(lx); + if (i >= 0) { + break; + } + if (!nextLine()) { + errorAt("Unclosed 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 (s.charAt(0) === "=") { + 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 quit("Stopping.", line, from); + case "/": + if (depth > 0) { + warningAt("{a} unterminated regular expression " + + "group(s).", line, from + l, depth); + } + 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 (s.charAt(l) === "]") { + errorAt("Unescaped '{a}'.", + line, from + l, "^"); + } + } + if (c === "]") { + warningAt("Empty class.", line, + from + l - 1); + } + isLiteral = false; + isInRange = false; +klass: + do { + c = s.charAt(l); + l += 1; + switch (c) { + case "[": + case "^": + warningAt("Unescaped '{a}'.", + line, from + l, c); + if (isInRange) { + isInRange = false; + } else { + isLiteral = true; + } + break; + case "-": + if (isLiteral && !isInRange) { + isLiteral = false; + isInRange = true; + } else if (isInRange) { + isInRange = false; + } else if (s.charAt(l) === "]") { + isInRange = true; + } else { + if (option.regexdash !== (l === 2 || (l === 3 && + s.charAt(1) === "^"))) { + warningAt("Unescaped '{a}'.", + line, from + l - 1, "-"); + } + isLiteral = true; + } + break; + case "]": + if (isInRange && !option.regexdash) { + 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; + + // \w, \s and \d are never part of a character range + if (/[wsd]/i.test(c)) { + if (isInRange) { + warningAt("Unescaped '{a}'.", + line, from + l, "-"); + isInRange = false; + } + isLiteral = false; + } else if (isInRange) { + isInRange = false; + } else { + isLiteral = true; + } + break; + case "/": + warningAt("Unescaped '{a}'.", + line, from + l - 1, "/"); + + if (isInRange) { + isInRange = false; + } else { + isLiteral = true; + } + break; + case "<": + if (isInRange) { + isInRange = false; + } else { + isLiteral = true; + } + break; + default: + if (isInRange) { + isInRange = false; + } else { + isLiteral = 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); + break; // No reason to continue checking numbers. + } + 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, token) { + if (t === "hasOwnProperty") { + warning("'hasOwnProperty' is a really bad name."); + } + + // Define t in the current function in the current scope. + if (type === "exception") { + if (is_own(funct["(context)"], t)) { + if (funct[t] !== true && !option.node) { + warning("Value of '{a}' may be overwritten in IE.", nexttoken, t); + } + } + } + + 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 && type !== "exception") { + warning("'{a}' is already defined.", nexttoken, t); + } + } + } + + funct[t] = type; + + if (token) { + funct["(tokens)"][t] = token; + } + + 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 nt = nexttoken; + var o = nt.value; + var quotmarkValue = option.quotmark; + var predef = {}; + var b, obj, filter, t, tn, v, minus; + + switch (o) { + case "*/": + error("Unbegun comment."); + break; + case "/*members": + case "/*member": + o = "/*members"; + if (!membersOnly) { + membersOnly = {}; + } + obj = membersOnly; + option.quotmark = false; + break; + case "/*jshint": + case "/*jslint": + obj = option; + filter = boolOptions; + break; + case "/*global": + obj = predef; + break; + default: + error("What?"); + } + + t = lex.token(); + +loop: + for (;;) { + minus = false; + for (;;) { + if (t.type === "special" && t.value === "*/") { + break loop; + } + if (t.id !== "(endline)" && t.id !== ",") { + break; + } + t = lex.token(); + } + + if (o === "/*global" && t.value === "-") { + minus = true; + 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 (o === "/*jshint") { + checkOption(t.value, t); + } + + var numericVals = [ + "maxstatements", + "maxparams", + "maxdepth", + "maxcomplexity", + "maxerr", + "maxlen", + "indent" + ]; + + if (numericVals.indexOf(t.value) > -1 && (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); + } + + if (t.value === "indent") + obj.white = true; + + obj[t.value] = b; + } else if (t.value === "validthis") { + if (funct["(global)"]) { + error("Option 'validthis' can't be used in a global scope."); + } else { + if (v.value === "true" || v.value === "false") + obj[t.value] = v.value === "true"; + else + error("Bad option value.", v); + } + } else if (t.value === "quotmark" && (o === "/*jshint")) { + switch (v.value) { + case "true": + obj.quotmark = true; + break; + case "false": + obj.quotmark = false; + break; + case "double": + case "single": + obj.quotmark = v.value; + break; + default: + error("Bad option value.", v); + } + } else if (v.value === "true" || v.value === "false") { + if (o === "/*jslint") { + tn = renamedOptions[t.value] || t.value; + obj[tn] = v.value === "true"; + if (invertedOptions[tn] !== undefined) { + obj[tn] = !obj[tn]; + } + } else { + obj[t.value] = v.value === "true"; + } + + if (t.value === "newcap") + obj["(explicitNewcap)"] = true; + } else { + error("Bad option value.", v); + } + t = lex.token(); + } else { + if (o === "/*jshint" || o === "/*jslint") { + error("Missing option value.", t); + } + + obj[t.value] = false; + + if (o === "/*global" && minus === true) { + JSHINT.blacklist[t.value] = t.value; + updatePredefined(); + } + + t = v; + } + } + + if (o === "/*members") { + option.quotmark = quotmarkValue; + } + + combine(predefined, predef); + + for (var key in predef) { + if (is_own(predef, key)) { + declared[key] = nt; + } + } + + 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, isObject = 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"; + isObject = token.value === "Object"; + + // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() + // Line breaks in IfStatement heads exist to satisfy the checkJSHint + // "Line too long." error. + if (left && (left.value || (left.first && left.first.value))) { + // If the left.value is not "new", or the left.first.value is a "." + // then safely assume that this is not "new Array()" and possibly + // not "new Object()"... + if (left.value !== "new" || + (left.first && left.first.value && left.first.value === ".")) { + isArray = false; + // ...In the case of Object, if the left.value and token.value + // are not equal, then safely assume that this not "new Object()" + if (left.value !== token.value) { + isObject = false; + } + } + } + + advance(); + if (isArray && token.id === "(" && nexttoken.id === ")") + warning("Use the array literal notation [].", token); + if (isObject && token.id === "(" && nexttoken.id === ")") + warning("Use the object 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) { + left.from += (left.character - left.from); + warning("Unexpected space after '{a}'.", left, 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.value === ";" && right.value === ";") { + return; + } + if (left.line === right.line && left.character === right.from) { + left.from += (left.character - left.from); + warning("Missing space after '{a}'.", + left, 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) { + left.from += (left.character - left.from); + warning("Missing space after '{a}'.", + left, 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.laxcomma) { + if (comma.first) { + warning("Comma warnings can be turned off with 'laxcomma'"); + comma.first = false; + } + warning("Bad line breaking before '{a}'.", token, nexttoken.id); + } + } else if (!token.comment && token.character !== nexttoken.from && option.white) { + token.from += (token.character - token.from); + warning("Unexpected space after '{a}'.", token, 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 (s === "in" && left.id === "!") { + warning("Confusing use of '{a}'.", left, "!"); + } + 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 (isIdentifier(left, "NaN") || isIdentifier(right, "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}'.", right, "!"); + } + 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) { + symbol(s, 20).exps = true; + + return infix(s, function (left, that) { + 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 (option.esnext && funct[left.value] === "const") { + warning("Attempting to override '{a}' which is a constant", left, left.value); + } + + 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) { + 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") { + if (!option.latedef) { + break; + } + 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; + + if (t.id === ";") { + 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 && nexttoken.value !== "{") { + 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; + } + + // Is it a lonely block? + + if (t.id === "{") { + block(true, true); + return; + } + + // 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.", t); + } + + if (nexttoken.id === ",") { + return comma(); + } + + if (nexttoken.id !== ";") { + if (!option.asi) { + // If this is the last statement in a block that ends on + // the same line *and* option lastsemic is on, ignore the warning. + // Otherwise, complain about missing semicolon. + if (!option.lastsemic || nexttoken.id !== "}" || + nexttoken.line !== token.line) { + warningAt("Missing semicolon.", token.line, token.character); + } + } + } else { + adjacent(token, nexttoken); + advance(";"); + nonadjacent(token, nexttoken); + } + } + +// Restore the indentation. + + indent = i; + scope = s; + return r; + } + + + function statements(startLine) { + var a = [], p; + + while (!nexttoken.reach && nexttoken.id !== "(end)") { + if (nexttoken.id === ";") { + p = peek(); + if (!p || p.id !== "(") { + warning("Unnecessary semicolon."); + } + advance(";"); + } else { + a.push(statement(startLine === nexttoken.line)); + } + } + return a; + } + + + /* + * read all directives + * recognizes a simple form of asi, but always + * warns, if it is used + */ + function directives() { + var i, p, pn; + + for (;;) { + if (nexttoken.id === "(string)") { + p = peek(0); + if (p.id === "(endline)") { + i = 1; + do { + pn = peek(i); + i = i + 1; + } while (pn.id === "(endline)"); + + if (pn.id !== ";") { + if (pn.id !== "(string)" && pn.id !== "(number)" && + pn.id !== "(regexp)" && pn.identifier !== true && + pn.id !== "}") { + break; + } + warning("Missing semicolon.", nexttoken); + } else { + p = pn; + } + } else if (p.id === "}") { + // directive with no other statements, warn about missing semicolon + warning("Missing semicolon.", p); + } else if (p.id !== ";") { + break; + } + + indentation(); + advance(); + if (directive[token.value]) { + warning("Unnecessary directive \"{a}\".", token, token.value); + } + + if (token.value === "use strict") { + if (!option["(explicitNewcap)"]) + option.newcap = true; + option.undef = true; + } + + // there's no directive negation, so always set to true + directive[token.value] = true; + + if (p.id === ";") { + advance(";"); + } + continue; + } + break; + } + } + + + /* + * 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). + * isfunc - true if block is a function body + */ + function block(ordinary, stmt, isfunc) { + var a, + b = inblock, + old_indent = indent, + m, + s = scope, + t, + line, + d; + + inblock = ordinary; + + if (!ordinary || !option.funcscope) + scope = Object.create(scope); + + nonadjacent(token, nexttoken); + t = nexttoken; + + var metrics = funct["(metrics)"]; + metrics.nestedBlockDepth += 1; + metrics.verifyMaxNestedBlockDepthPerFunction(); + + if (nexttoken.id === "{") { + advance("{"); + line = token.line; + if (nexttoken.id !== "}") { + indent += option.indent; + while (!ordinary && nexttoken.from > indent) { + indent += option.indent; + } + + if (isfunc) { + m = {}; + for (d in directive) { + if (is_own(directive, d)) { + m[d] = directive[d]; + } + } + directives(); + + if (option.strict && funct["(context)"]["(global)"]) { + if (!m["use strict"] && !directive["use strict"]) { + warning("Missing \"use strict\" statement."); + } + } + } + + a = statements(line); + + metrics.statementCount += a.length; + + if (isfunc) { + directive = m; + } + + indent -= option.indent; + if (line !== nexttoken.line) { + indentation(); + } + } else if (line !== nexttoken.line) { + 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; + indent += option.indent; + // test indentation only if statement is in new line + a = [statement(nexttoken.line === token.line)]; + indent -= option.indent; + noreach = false; + } + funct["(verb)"] = null; + if (!ordinary || !option.funcscope) scope = s; + inblock = b; + if (ordinary && option.noempty && (!a || a.length === 0)) { + warning("Empty block."); + } + metrics.nestedBlockDepth -= 1; + 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; + } + } else if (funct["(global)"]) { + // 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. + + if (option.undef && typeof predefined[v] !== "boolean") { + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (nexttoken && (nexttoken.value === "." || nexttoken.value === "["))) { + + isundef(funct, "'{a}' is not defined.", token, v); + } + } + + note_implied(token); + } else { + // If the name is already defined in the current + // function, but not as outer, then there is a scope error. + + 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 (option.undef) { + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (nexttoken && + (nexttoken.value === "." || nexttoken.value === "["))) { + + isundef(funct, "'{a}' is not defined.", token, v); + } + } + 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": + 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 (directive["use strict"] && funct["(global)"]) { + warning("Strict violation.", x); + } + }); + reservevar("eval"); + reservevar("false"); + reservevar("Infinity"); + reservevar("null"); + reservevar("this", function (x) { + if (directive["use strict"] && !option.validthis && ((funct["(statement)"] && + funct["(name)"].charAt(0) > "Z") || funct["(global)"])) { + warning("Possible 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) { + 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("<"); + 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 (!option.scripturl && 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 "Number": + case "String": + case "Boolean": + case "Math": + case "JSON": + warning("Do not use {a} as a constructor.", prevtoken, 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") && !is_own(global, c.value)) { + 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.", + token, token.value); + } + 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 (left && left.value === "arguments" && (m === "callee" || m === "caller")) { + if (option.noarg) + warning("Avoid arguments.{a}.", left, m); + else if (directive["use strict"]) + error("Strict violation."); + } 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 ("Number String Boolean Date Object".indexOf(left.value) === -1) { + 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.", token); + } + if (!option.evil) { + if (left.value === "eval" || left.value === "Function" || + left.value === "execScript") { + warning("eval is evil.", left); + + if (p[0] && [0].id === "(string)") { + addInternalSrc(left, p[0].value); + } + } 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); + addInternalSrc(left, p[0].value); + + // window.setTimeout/setInterval + } else if (p[0] && p[0].id === "(string)" && + left.value === "." && + left.left.value === "window" && + (left.right === "setTimeout" || + left.right === "setInterval")) { + warning( + "Implied eval is evil. Pass a function instead of a string.", left); + addInternalSrc(left, p[0].value); + } + } + 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 !== "(" && + (nexttoken.id !== "." || (peek().value !== "call" && peek().value !== "apply"))) { + 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.", + prevtoken, 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 === ",") { + if (!option.es5) + 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 next = nexttoken; + var params = []; + var ident; + + advance("("); + nospace(); + + if (nexttoken.id === ")") { + advance(")"); + return; + } + + for (;;) { + ident = identifier(true); + params.push(ident); + addlabel(ident, "unused", token); + if (nexttoken.id === ",") { + comma(); + } else { + advance(")", next); + nospace(prevtoken, token); + return params; + } + } + } + + + function doFunction(name, statement) { + var f; + var oldOption = option; + var oldScope = scope; + + option = Object.create(option); + scope = Object.create(scope); + + funct = { + "(name)" : name || "\"" + anonname + "\"", + "(line)" : nexttoken.line, + "(character)": nexttoken.character, + "(context)" : funct, + "(breakage)" : 0, + "(loopage)" : 0, + "(metrics)" : createMetrics(nexttoken), + "(scope)" : scope, + "(statement)": statement, + "(tokens)" : {} + }; + + f = funct; + token.funct = funct; + + functions.push(funct); + + if (name) { + addlabel(name, "function"); + } + + funct["(params)"] = functionparams(); + funct["(metrics)"].verifyMaxParametersPerFunction(funct["(params)"]); + + block(false, false, true); + + funct["(metrics)"].verifyMaxStatementsPerFunction(); + funct["(metrics)"].verifyMaxComplexityPerFunction(); + + scope = oldScope; + option = oldOption; + funct["(last)"] = token.line; + funct["(lastcharacter)"] = token.character; + funct = funct["(context)"]; + + return f; + } + + function createMetrics(functionStartToken) { + return { + statementCount: 0, + nestedBlockDepth: -1, + ComplexityCount: 1, + verifyMaxStatementsPerFunction: function () { + if (option.maxstatements && + this.statementCount > option.maxstatements) { + var message = "Too many statements per function (" + this.statementCount + ")."; + warning(message, functionStartToken); + } + }, + + verifyMaxParametersPerFunction: function (params) { + params = params || []; + + if (option.maxparams && params.length > option.maxparams) { + var message = "Too many parameters per function (" + params.length + ")."; + warning(message, functionStartToken); + } + }, + + verifyMaxNestedBlockDepthPerFunction: function () { + if (option.maxdepth && + this.nestedBlockDepth > 0 && + this.nestedBlockDepth === option.maxdepth + 1) { + var message = "Blocks are nested too deeply (" + this.nestedBlockDepth + ")."; + warning(message); + } + }, + + verifyMaxComplexityPerFunction: function () { + var max = option.maxcomplexity; + var cc = this.ComplexityCount; + if (max && cc > max) { + var message = "Cyclomatic complexity is too high per function (" + cc + ")."; + warning(message, functionStartToken); + } + } + }; + } + + function increaseComplexityCount() { + funct["(metrics)"].ComplexityCount += 1; + } + + + (function (x) { + x.nud = function () { + var b, f, i, p, t; + var props = {}; // All properties, including accessors + + function saveProperty(name, token) { + if (props[name] && is_own(props, name)) + warning("Duplicate member '{a}'.", nexttoken, i); + else + props[name] = {}; + + props[name].basic = true; + props[name].basicToken = token; + } + + function saveSetter(name, token) { + if (props[name] && is_own(props, name)) { + if (props[name].basic || props[name].setter) + warning("Duplicate member '{a}'.", nexttoken, i); + } else { + props[name] = {}; + } + + props[name].setter = true; + props[name].setterToken = token; + } + + function saveGetter(name) { + if (props[name] && is_own(props, name)) { + if (props[name].basic || props[name].getter) + warning("Duplicate member '{a}'.", nexttoken, i); + } else { + props[name] = {}; + } + + props[name].getter = true; + props[name].getterToken = token; + } + + 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."); + } + saveGetter(i); + t = nexttoken; + adjacent(token, nexttoken); + f = doFunction(); + p = f["(params)"]; + if (p) { + warning("Unexpected parameter '{a}' in get {b} function.", t, p[0], i); + } + adjacent(token, nexttoken); + } else if (nexttoken.value === "set" && peek().id !== ":") { + advance("set"); + if (!option.es5) { + error("get/set are ES5 features."); + } + i = property_name(); + if (!i) { + error("Missing property name."); + } + saveSetter(i, nexttoken); + t = nexttoken; + adjacent(token, nexttoken); + f = doFunction(); + p = f["(params)"]; + if (!p || p.length !== 1) { + warning("Expected a single parameter in set {a} function.", t, i); + } + } else { + i = property_name(); + saveProperty(i, nexttoken); + if (typeof i !== "string") { + break; + } + advance(":"); + nonadjacent(token, nexttoken); + expression(10); + } + + 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); + + // Check for lonely setters if in the ES5 mode. + if (option.es5) { + for (var name in props) { + if (is_own(props, name) && props[name].setter && !props[name].getter) { + warning("Setter is defined without getter.", props[name].setterToken); + } + } + } + return this; + }; + x.fud = function () { + error("Expected to see a statement and instead saw a block.", token); + }; + }(delim("{"))); + +// This Function is called when esnext option is set to true +// it adds the `const` statement to JSHINT + + useESNextSyntax = function () { + var conststatement = stmt("const", function (prefix) { + var id, name, value; + + this.first = []; + for (;;) { + nonadjacent(token, nexttoken); + id = identifier(); + if (funct[id] === "const") { + warning("const '" + id + "' has already been declared"); + } + if (funct["(global)"] && predefined[id] === false) { + warning("Redefinition of '{a}'.", token, id); + } + addlabel(id, "const"); + if (prefix) { + break; + } + name = token; + this.first.push(token); + + if (nexttoken.id !== "=") { + warning("const " + + "'{a}' is initialized to 'undefined'.", token, id); + } + + 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("Constant {a} was not declared correctly.", + nexttoken, nexttoken.value); + } + value = expression(0); + name.first = value; + } + + if (nexttoken.id !== ",") { + break; + } + comma(); + } + return this; + }); + conststatement.exps = true; + }; + + 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 (option.esnext && funct[id] === "const") { + warning("const '" + id + "' has already been declared"); + } + + if (funct["(global)"] && predefined[id] === false) { + warning("Redefinition of '{a}'.", token, id); + } + + addlabel(id, "unused", token); + + 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(); + if (option.esnext && funct[i] === "const") { + warning("const '" + i + "' has already been declared"); + } + adjacent(token, nexttoken); + addlabel(i, "unction", token); + + doFunction(i, { statement: 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; + increaseComplexityCount(); + 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; + + function doCatch() { + var oldScope = scope; + var e; + + advance("catch"); + nonadjacent(token, nexttoken); + advance("("); + + scope = Object.create(oldScope); + + e = nexttoken.value; + if (nexttoken.type !== "(identifier)") { + e = null; + warning("Expected an identifier and instead saw '{a}'.", nexttoken, e); + } + + advance(); + advance(")"); + + funct = { + "(name)" : "(catch)", + "(line)" : nexttoken.line, + "(character)": nexttoken.character, + "(context)" : funct, + "(breakage)" : funct["(breakage)"], + "(loopage)" : funct["(loopage)"], + "(scope)" : scope, + "(statement)": false, + "(metrics)" : createMetrics(nexttoken), + "(catch)" : true, + "(tokens)" : {} + }; + + if (e) { + addlabel(e, "exception"); + } + + token.funct = funct; + functions.push(funct); + + block(false); + + scope = oldScope; + + funct["(last)"] = token.line; + funct["(lastcharacter)"] = token.character; + funct = funct["(context)"]; + } + + block(false); + + if (nexttoken.id === "catch") { + increaseComplexityCount(); + doCatch(); + b = true; + } + + 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; + increaseComplexityCount(); + 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; + + blockstmt("with", function () { + var t = nexttoken; + if (directive["use strict"]) { + error("'with' is not allowed in strict mode.", token); + } else if (!option.withstmt) { + warning("Don't use 'with'.", token); + } + + advance("("); + nonadjacent(this, t); + nospace(); + expression(0); + advance(")", t); + nospace(prevtoken, token); + block(true, true); + + return this; + }); + + 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)); + increaseComplexityCount(); + 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") { + if (!option.onecase) + 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 ":": + g = false; + statements(); + break; + default: + error("Missing ':' on a case clause.", token); + return; + } + } else { + if (token.id === ":") { + advance(":"); + error("Unexpected '{a}'.", token, ":"); + statements(); + } else { + error("Expected '{a}' and instead saw '{b}'.", + nexttoken, "case", nexttoken.value); + return; + } + } + } + } + }).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; + increaseComplexityCount(); + + 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; + increaseComplexityCount(); + 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 && (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); + + if (!option.asi) + 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); + + if (!option.asi) + 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 () { + if (this.line === nexttoken.line) { + if (nexttoken.id === "(regexp)") + warning("Wrap the /regexp/ literal in parens to disambiguate the slash operator."); + + if (nexttoken.id !== ";" && !nexttoken.reach) { + nonadjacent(token, nexttoken); + if (peek().value === "=" && !option.boss) { + warningAt("Did you mean to return a conditional instead of an assignment?", + token.line, token.character + 1); + } + this.first = expression(0); + } + } else if (!option.asi) { + nolinebreak(this); // always warn (Line breaking error) + } + 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__" && + !option.proto) || (nexttoken.value === "__iterator__" && + !option.iterator)) { + warning("The '{a}' key may produce unexpected results.", + 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, x; + var optionKeys; + var newOptionObj = {}; + + if (o && o.scope) { + JSHINT.scope = o.scope; + } else { + JSHINT.errors = []; + JSHINT.undefs = []; + JSHINT.internals = []; + JSHINT.blacklist = {}; + JSHINT.scope = "(main)"; + } + + predefined = Object.create(standard); + declared = Object.create(null); + combine(predefined, g || {}); + + if (o) { + a = o.predef; + if (a) { + if (!Array.isArray(a) && typeof a === "object") { + a = Object.keys(a); + } + a.forEach(function (item) { + var slice; + if (item[0] === "-") { + slice = item.slice(1); + JSHINT.blacklist[slice] = slice; + } else { + predefined[item] = true; + } + }); + } + + optionKeys = Object.keys(o); + for (x = 0; x < optionKeys.length; x++) { + newOptionObj[optionKeys[x]] = o[optionKeys[x]]; + + if (optionKeys[x] === "newcap" && o[optionKeys[x]] === false) + newOptionObj["(explicitNewcap)"] = true; + + if (optionKeys[x] === "indent") + newOptionObj.white = true; + } + } + + option = newOptionObj; + + 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, + "(tokens)": {}, + "(metrics)": createMetrics(nexttoken) + }; + functions = [funct]; + urls = []; + stack = null; + member = {}; + membersOnly = null; + implied = {}; + inblock = false; + lookahead = []; + jsonmode = false; + warnings = 0; + lines = []; + unuseds = []; + + if (!isString(s) && !Array.isArray(s)) { + errorAt("Input is neither a string nor an array of strings.", 0); + return false; + } + + if (isString(s) && /^\s*$/g.test(s)) { + errorAt("Input is an empty string.", 0); + return false; + } + + if (s.length === 0) { + errorAt("Input is an empty array.", 0); + return false; + } + + lex.init(s); + + prereg = true; + directive = {}; + + prevtoken = token = nexttoken = syntax["(begin)"]; + + // Check options + for (var name in o) { + if (is_own(o, name)) { + checkOption(name, token); + } + } + + assume(); + + // combine the passed globals after we've assumed all our options + combine(predefined, g || {}); + + //reset values + comma.first = true; + quotmark = undefined; + + try { + advance(); + switch (nexttoken.id) { + case "{": + case "[": + option.laxbreak = true; + jsonmode = true; + jsonValue(); + break; + default: + directives(); + if (directive["use strict"] && !option.globalstrict) { + warning("Use the function form of \"use strict\".", prevtoken); + } + + statements(); + } + advance((nexttoken && nexttoken.value !== ".") ? "(end)" : undefined); + + var markDefined = function (name, context) { + do { + if (typeof context[name] === "string") { + // JSHINT marks unused variables as 'unused' and + // unused function declaration as 'unction'. This + // code changes such instances back 'var' and + // 'closure' so that the code in JSHINT.data() + // doesn't think they're unused. + + if (context[name] === "unused") + context[name] = "var"; + else if (context[name] === "unction") + context[name] = "closure"; + + return true; + } + + context = context["(context)"]; + } while (context); + + return false; + }; + + var clearImplied = function (name, line) { + if (!implied[name]) + return; + + var newImplied = []; + for (var i = 0; i < implied[name].length; i += 1) { + if (implied[name][i] !== line) + newImplied.push(implied[name][i]); + } + + if (newImplied.length === 0) + delete implied[name]; + else + implied[name] = newImplied; + }; + + var warnUnused = function (name, token) { + var line = token.line; + var chr = token.character; + + if (option.unused) + warningAt("'{a}' is defined but never used.", line, chr, name); + + unuseds.push({ + name: name, + line: line, + character: chr + }); + }; + + var checkUnused = function (func, key) { + var type = func[key]; + var token = func["(tokens)"][key]; + + if (key.charAt(0) === "(") + return; + + if (type !== "unused" && type !== "unction") + return; + + // Params are checked separately from other variables. + if (func["(params)"] && func["(params)"].indexOf(key) !== -1) + return; + + warnUnused(key, token); + }; + + // Check queued 'x is not defined' instances to see if they're still undefined. + for (i = 0; i < JSHINT.undefs.length; i += 1) { + k = JSHINT.undefs[i].slice(0); + + if (markDefined(k[2].value, k[0])) { + clearImplied(k[2].value, k[2].line); + } else { + warning.apply(warning, k.slice(1)); + } + } + + functions.forEach(function (func) { + for (var key in func) { + if (is_own(func, key)) { + checkUnused(func, key); + } + } + + if (!func["(params)"]) + return; + + var params = func["(params)"].slice(); + var param = params.pop(); + var type; + + while (param) { + type = func[param]; + + // 'undefined' is a special case for (function (window, undefined) { ... })(); + // patterns. + + if (param === "undefined") + return; + + if (type !== "unused" && type !== "unction") + return; + + warnUnused(param, func["(tokens)"][param]); + param = params.pop(); + } + }); + + for (var key in declared) { + if (is_own(declared, key) && !is_own(global, key)) { + warnUnused(key, declared[key]); + } + } + } catch (e) { + if (e) { + var nt = nexttoken || {}; + JSHINT.errors.push({ + raw : e.raw, + reason : e.message, + line : e.line || nt.line, + character : e.character || nt.from + }, null); + } + } + + // Loop over the listed "internals", and check them as well. + + if (JSHINT.scope === "(main)") { + o = o || {}; + + for (i = 0; i < JSHINT.internals.length; i += 1) { + k = JSHINT.internals[i]; + o.scope = k.elem; + itself(k.value, o, g); + } + } + + return JSHINT.errors.length === 0; + }; + + // Data summary. + itself.data = function () { + var data = { + functions: [], + options: option + }; + var implieds = []; + var members = []; + var fu, f, i, j, n, globals; + + 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 (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.character = f["(character)"]; + fu.last = f["(last)"]; + fu.lastcharacter = f["(lastcharacter)"]; + data.functions.push(fu); + } + + if (unuseds.length > 0) { + data.unused = unuseds; + } + + members = []; + for (n in member) { + if (typeof member[n] === "number") { + data.member = member; + break; + } + } + + return data; + }; + + itself.jshint = itself; + + return itself; +}()); + +// Make JSHINT a Node module, if possible. +if (typeof exports === "object" && exports) { + exports.JSHINT = JSHINT; +}
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