+++ /dev/null
-// jslint.js
-// 2010-02-20
-
-/*
-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.
-*/
-
-/*
- JSLINT is a global function. It takes two parameters.
-
- var myResult = JSLINT(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 HTML text, or a Konfabulator text.
-
- The second parameter is an optional object of options which control the
- operation of JSLINT. Most of the options are booleans: They are all are
- optional and have a default value of false.
-
- If it checks out, JSLINT returns true. Otherwise, it returns false.
-
- If false, you can inspect JSLINT.errors to find out the problems.
- JSLINT.errors is an array of objects containing these members:
-
- {
- line : The line (relative to 0) at which the lint was found
- character : The character (relative to 0) at which the lint was found
- reason : The problem
- evidence : The text line in which the problem occurred
- raw : The raw message before the details were inserted
- a : The first detail
- b : The second detail
- c : The third detail
- d : The fourth detail
- }
-
- If a fatal error was found, a null will be the last element of the
- JSLINT.errors array.
-
- You can request a Function Report, which shows all of the functions
- and the parameters and vars that they use. This can be used to find
- implied global variables and other problems. The report is in HTML and
- can be inserted in an HTML <body>.
-
- var myReport = JSLINT.report(limited);
-
- If limited is true, then the report will be limited to only errors.
-
- You can request a data structure which contains JSLint's results.
-
- var myData = JSLINT.data();
-
- It returns a structure with this form:
-
- {
- errors: [
- {
- line: NUMBER,
- character: NUMBER,
- reason: STRING,
- evidence: STRING
- }
- ],
- functions: [
- name: STRING,
- line: NUMBER,
- last: NUMBER,
- param: [
- STRING
- ],
- closure: [
- STRING
- ],
- var: [
- STRING
- ],
- exception: [
- STRING
- ],
- outer: [
- STRING
- ],
- unused: [
- STRING
- ],
- global: [
- STRING
- ],
- label: [
- STRING
- ]
- ],
- globals: [
- STRING
- ],
- member: {
- STRING: NUMBER
- },
- unuseds: [
- {
- name: STRING,
- line: NUMBER
- }
- ],
- implieds: [
- {
- name: STRING,
- line: NUMBER
- }
- ],
- urls: [
- STRING
- ],
- json: BOOLEAN
- }
-
- Empty arrays will not be included.
-
-*/
-
-/*jslint
- evil: true, nomen: false, onevar: false, regexp: false, strict: true
-*/
-
-/*members "\b", "\t", "\n", "\f", "\r", "!=", "!==", "\"", "%",
- "(begin)", "(breakage)", "(context)", "(error)", "(global)",
- "(identifier)", "(last)", "(line)", "(loopage)", "(name)", "(onevar)",
- "(params)", "(scope)", "(verb)", "*", "+", "++", "-", "--", "\/",
- "<", "<=", "==", "===", ">", ">=", ADSAFE, Array, Boolean,
- COM, Canvas, CustomAnimation, Date, Debug, E, Error, EvalError,
- FadeAnimation, Flash, FormField, Frame, Function, HotKey, Image, JSON,
- LN10, LN2, LOG10E, LOG2E, MAX_VALUE, MIN_VALUE, Math, MenuItem,
- MoveAnimation, NEGATIVE_INFINITY, Number, Object, Option, PI,
- POSITIVE_INFINITY, Point, RangeError, Rectangle, ReferenceError, RegExp,
- ResizeAnimation, RotateAnimation, SQRT1_2, SQRT2, ScrollBar, String,
- Style, SyntaxError, System, Text, TextArea, Timer, TypeError, URIError,
- URL, Web, Window, XMLDOM, XMLHttpRequest, "\\", a, abbr, acronym,
- addEventListener, address, adsafe, alert, aliceblue, animator,
- antiquewhite, appleScript, applet, apply, approved, aqua, aquamarine,
- area, arguments, arity, autocomplete, azure, b, background,
- "background-attachment", "background-color", "background-image",
- "background-position", "background-repeat", base, bdo, beep, beige, big,
- bisque, bitwise, black, blanchedalmond, block, blockquote, blue,
- blueviolet, blur, body, border, "border-bottom", "border-bottom-color",
- "border-bottom-style", "border-bottom-width", "border-collapse",
- "border-color", "border-left", "border-left-color", "border-left-style",
- "border-left-width", "border-right", "border-right-color",
- "border-right-style", "border-right-width", "border-spacing",
- "border-style", "border-top", "border-top-color", "border-top-style",
- "border-top-width", "border-width", bottom, br, brown, browser,
- burlywood, button, bytesToUIString, c, cadetblue, call, callee, caller,
- canvas, cap, caption, "caption-side", cases, center, charAt, charCodeAt,
- character, chartreuse, chocolate, chooseColor, chooseFile, chooseFolder,
- cite, clear, clearInterval, clearTimeout, clip, close, closeWidget,
- closed, closure, cm, code, col, colgroup, color, comment, condition,
- confirm, console, constructor, content, convertPathToHFS,
- convertPathToPlatform, coral, cornflowerblue, cornsilk,
- "counter-increment", "counter-reset", create, crimson, css, cursor,
- cyan, d, darkblue, darkcyan, darkgoldenrod, darkgray, darkgreen,
- darkkhaki, darkmagenta, darkolivegreen, darkorange, darkorchid, darkred,
- darksalmon, darkseagreen, darkslateblue, darkslategray, darkturquoise,
- darkviolet, data, dd, debug, decodeURI, decodeURIComponent, deeppink,
- deepskyblue, defaultStatus, defineClass, del, deserialize, devel, dfn,
- dimension, dimgray, dir, direction, display, div, dl, document,
- dodgerblue, dt, edition, else, em, embed, empty, "empty-cells",
- encodeURI, encodeURIComponent, entityify, eqeqeq, errors, escape, eval,
- event, evidence, evil, ex, exception, exec, exps, fieldset, filesystem,
- firebrick, first, float, floor, floralwhite, focus, focusWidget, font,
- "font-face", "font-family", "font-size", "font-size-adjust",
- "font-stretch", "font-style", "font-variant", "font-weight",
- forestgreen, forin, form, fragment, frame, frames, frameset, from,
- fromCharCode, fuchsia, fud, funct, function, functions, g, gainsboro,
- gc, getComputedStyle, ghostwhite, global, globals, gold, goldenrod,
- gray, green, greenyellow, h1, h2, h3, h4, h5, h6, hasOwnProperty, head,
- height, help, history, honeydew, hotpink, hr, html, i, iTunes, id,
- identifier, iframe, img, immed, implieds, in, include, indent, indexOf,
- indianred, indigo, init, input, ins, isAlpha, isApplicationRunning,
- isDigit, isFinite, isNaN, ivory, join, jslint, json, kbd, khaki,
- konfabulatorVersion, label, labelled, lang, last, lavender,
- lavenderblush, lawngreen, laxbreak, lbp, led, left, legend,
- lemonchiffon, length, "letter-spacing", li, lib, lightblue, lightcoral,
- lightcyan, lightgoldenrodyellow, lightgreen, lightpink, lightsalmon,
- lightseagreen, lightskyblue, lightslategray, lightsteelblue,
- lightyellow, lime, limegreen, line, "line-height", linen, link,
- "list-style", "list-style-image", "list-style-position",
- "list-style-type", load, loadClass, location, log, m, magenta, map,
- margin, "margin-bottom", "margin-left", "margin-right", "margin-top",
- "marker-offset", maroon, match, "max-height", "max-width", maxerr, maxlen,
- md5, media, mediumaquamarine, mediumblue, mediumorchid, mediumpurple,
- mediumseagreen, mediumslateblue, mediumspringgreen, mediumturquoise,
- mediumvioletred, member, menu, message, meta, midnightblue,
- "min-height", "min-width", mintcream, mistyrose, mm, moccasin, moveBy,
- moveTo, name, navajowhite, navigator, navy, new, newcap, noframes,
- nomen, noscript, nud, object, ol, oldlace, olive, olivedrab, on,
- onbeforeunload, onblur, onerror, onevar, onfocus, onload, onresize,
- onunload, opacity, open, openURL, opener, opera, optgroup, option,
- orange, orangered, orchid, outer, outline, "outline-color",
- "outline-style", "outline-width", overflow, "overflow-x", "overflow-y",
- p, padding, "padding-bottom", "padding-left", "padding-right",
- "padding-top", page, "page-break-after", "page-break-before",
- palegoldenrod, palegreen, paleturquoise, palevioletred, papayawhip,
- param, parent, parseFloat, parseInt, passfail, pc, peachpuff, peru,
- pink, play, plum, plusplus, pop, popupMenu, position, powderblue, pre,
- predef, preferenceGroups, preferences, print, prompt, prototype, pt,
- purple, push, px, q, quit, quotes, random, range, raw, reach, readFile,
- readUrl, reason, red, regexp, reloadWidget, removeEventListener,
- replace, report, reserved, resizeBy, resizeTo, resolvePath,
- resumeUpdates, rhino, right, rosybrown, royalblue, runCommand,
- runCommandInBg, saddlebrown, safe, salmon, samp, sandybrown, saveAs,
- savePreferences, screen, script, scroll, scrollBy, scrollTo, seagreen,
- seal, search, seashell, select, serialize, setInterval, setTimeout,
- shift, showWidgetPreferences, sidebar, sienna, silver, skyblue,
- slateblue, slategray, sleep, slice, small, snow, sort, span, spawn,
- speak, split, springgreen, src, status, steelblue, strict, strong,
- style, styleproperty, sub, substr, sup, supplant, suppressUpdates, sync,
- system, table, "table-layout", tan, tbody, td, teal, tellWidget, test,
- "text-align", "text-decoration", "text-indent", "text-shadow",
- "text-transform", textarea, tfoot, th, thead, thistle, title,
- toLowerCase, toString, toUpperCase, toint32, token, tomato, top, tr, tt,
- turquoise, type, u, ul, undef, unescape, "unicode-bidi", unused,
- unwatch, updateNow, urls, value, valueOf, var, version,
- "vertical-align", violet, visibility, watch, wheat, white,
- "white-space", whitesmoke, widget, width, "word-spacing", "word-wrap",
- yahooCheckLogin, yahooLogin, yahooLogout, yellow, yellowgreen,
- "z-index"
-*/
-
-
-// We build the application inside a function so that we produce only a single
-// global variable. The function will be invoked, its return value is the JSLINT
-// application itself.
-
-"use strict";
-
-var JSLINT = (function () {
- var adsafe_id, // The widget's ADsafe id.
- adsafe_may, // The widget may load approved scripts.
- adsafe_went, // ADSAFE.go has been called.
- anonname, // The guessed name for anonymous functions.
- approved, // ADsafe approved urls.
-
- atrule = {
- media : true,
- 'font-face': true,
- page : true
- },
-
-// 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 members that should not be permitted in the safe subset.
-
- banned = { // the member names that ADsafe prohibits.
- 'arguments' : true,
- callee : true,
- caller : true,
- constructor : true,
- 'eval' : true,
- prototype : true,
- unwatch : true,
- valueOf : true,
- watch : true
- },
-
-
-// These are the JSLint boolean options.
-
- boolOptions = {
- adsafe : true, // if ADsafe should be enforced
- bitwise : true, // if bitwise operators should not be allowed
- browser : true, // if the standard browser globals should be predefined
- cap : true, // if upper case HTML should be allowed
- css : true, // if CSS workarounds should be tolerated
- debug : true, // if debugger statements should be allowed
- devel : true, // if logging should be allowed (console, alert, etc.)
- eqeqeq : true, // if === should be required
- evil : true, // if eval should be allowed
- forin : true, // if for in statements must filter
- fragment : true, // if HTML fragments should be allowed
- immed : true, // if immediate invocations must be wrapped in parens
- laxbreak : true, // if line breaks should not be checked
- newcap : true, // if constructor names must be capitalized
- nomen : true, // if names should be checked
- on : true, // if HTML event handlers should be allowed
- onevar : true, // if only one var statement per function should be allowed
- passfail : true, // if the scan should stop on first error
- plusplus : true, // if increment/decrement should not be allowed
- 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
- safe : true, // if use of some browser features should be restricted
- sidebar : true, // if the System object should be predefined
- strict : true, // require the "use strict"; pragma
- sub : true, // if all forms of subscript notation are tolerated
- white : true, // if strict whitespace rules apply
- widget : true // if the Yahoo Widgets globals should be predefined
- },
-
-// browser contains a set of global names which are commonly provided by a
-// web browser environment.
-
- browser = {
- addEventListener: false,
- blur : false,
- clearInterval : false,
- clearTimeout : false,
- close : false,
- closed : false,
- defaultStatus : false,
- document : false,
- event : false,
- focus : false,
- frames : false,
- getComputedStyle: false,
- history : false,
- Image : false,
- length : false,
- location : false,
- moveBy : false,
- moveTo : false,
- name : false,
- navigator : false,
- onbeforeunload : true,
- onblur : true,
- onerror : true,
- onfocus : true,
- onload : true,
- onresize : true,
- onunload : true,
- open : false,
- opener : false,
- Option : false,
- parent : false,
- print : false,
- removeEventListener: false,
- resizeBy : false,
- resizeTo : false,
- screen : false,
- scroll : false,
- scrollBy : false,
- scrollTo : false,
- setInterval : false,
- setTimeout : false,
- status : false,
- top : false,
- XMLHttpRequest : false
- },
-
- cssAttributeData,
- cssAny,
-
- cssColorData = {
- "aliceblue" : true,
- "antiquewhite" : true,
- "aqua" : true,
- "aquamarine" : true,
- "azure" : true,
- "beige" : true,
- "bisque" : true,
- "black" : true,
- "blanchedalmond" : true,
- "blue" : true,
- "blueviolet" : true,
- "brown" : true,
- "burlywood" : true,
- "cadetblue" : true,
- "chartreuse" : true,
- "chocolate" : true,
- "coral" : true,
- "cornflowerblue" : true,
- "cornsilk" : true,
- "crimson" : true,
- "cyan" : true,
- "darkblue" : true,
- "darkcyan" : true,
- "darkgoldenrod" : true,
- "darkgray" : true,
- "darkgreen" : true,
- "darkkhaki" : true,
- "darkmagenta" : true,
- "darkolivegreen" : true,
- "darkorange" : true,
- "darkorchid" : true,
- "darkred" : true,
- "darksalmon" : true,
- "darkseagreen" : true,
- "darkslateblue" : true,
- "darkslategray" : true,
- "darkturquoise" : true,
- "darkviolet" : true,
- "deeppink" : true,
- "deepskyblue" : true,
- "dimgray" : true,
- "dodgerblue" : true,
- "firebrick" : true,
- "floralwhite" : true,
- "forestgreen" : true,
- "fuchsia" : true,
- "gainsboro" : true,
- "ghostwhite" : true,
- "gold" : true,
- "goldenrod" : true,
- "gray" : true,
- "green" : true,
- "greenyellow" : true,
- "honeydew" : true,
- "hotpink" : true,
- "indianred" : true,
- "indigo" : true,
- "ivory" : true,
- "khaki" : true,
- "lavender" : true,
- "lavenderblush" : true,
- "lawngreen" : true,
- "lemonchiffon" : true,
- "lightblue" : true,
- "lightcoral" : true,
- "lightcyan" : true,
- "lightgoldenrodyellow" : true,
- "lightgreen" : true,
- "lightpink" : true,
- "lightsalmon" : true,
- "lightseagreen" : true,
- "lightskyblue" : true,
- "lightslategray" : true,
- "lightsteelblue" : true,
- "lightyellow" : true,
- "lime" : true,
- "limegreen" : true,
- "linen" : true,
- "magenta" : true,
- "maroon" : true,
- "mediumaquamarine" : true,
- "mediumblue" : true,
- "mediumorchid" : true,
- "mediumpurple" : true,
- "mediumseagreen" : true,
- "mediumslateblue" : true,
- "mediumspringgreen" : true,
- "mediumturquoise" : true,
- "mediumvioletred" : true,
- "midnightblue" : true,
- "mintcream" : true,
- "mistyrose" : true,
- "moccasin" : true,
- "navajowhite" : true,
- "navy" : true,
- "oldlace" : true,
- "olive" : true,
- "olivedrab" : true,
- "orange" : true,
- "orangered" : true,
- "orchid" : true,
- "palegoldenrod" : true,
- "palegreen" : true,
- "paleturquoise" : true,
- "palevioletred" : true,
- "papayawhip" : true,
- "peachpuff" : true,
- "peru" : true,
- "pink" : true,
- "plum" : true,
- "powderblue" : true,
- "purple" : true,
- "red" : true,
- "rosybrown" : true,
- "royalblue" : true,
- "saddlebrown" : true,
- "salmon" : true,
- "sandybrown" : true,
- "seagreen" : true,
- "seashell" : true,
- "sienna" : true,
- "silver" : true,
- "skyblue" : true,
- "slateblue" : true,
- "slategray" : true,
- "snow" : true,
- "springgreen" : true,
- "steelblue" : true,
- "tan" : true,
- "teal" : true,
- "thistle" : true,
- "tomato" : true,
- "turquoise" : true,
- "violet" : true,
- "wheat" : true,
- "white" : true,
- "whitesmoke" : true,
- "yellow" : true,
- "yellowgreen" : true
- },
-
- cssBorderStyle,
- cssBreak,
-
- cssLengthData = {
- '%': true,
- 'cm': true,
- 'em': true,
- 'ex': true,
- 'in': true,
- 'mm': true,
- 'pc': true,
- 'pt': true,
- 'px': true
- },
-
- cssOverflow,
-
- devel = {
- alert : false,
- confirm : false,
- console : false,
- Debug : false,
- opera : false,
- prompt : false
- },
-
- escapes = {
- '\b': '\\b',
- '\t': '\\t',
- '\n': '\\n',
- '\f': '\\f',
- '\r': '\\r',
- '"' : '\\"',
- '/' : '\\/',
- '\\': '\\\\'
- },
-
- funct, // The current function
-
- functionicity = [
- 'closure', 'exception', 'global', 'label',
- 'outer', 'unused', 'var'
- ],
-
- functions, // All of the functions
-
- global, // The global scope
- htmltag = {
- a: {},
- abbr: {},
- acronym: {},
- address: {},
- applet: {},
- area: {empty: true, parent: ' map '},
- b: {},
- base: {empty: true, parent: ' head '},
- bdo: {},
- big: {},
- blockquote: {},
- body: {parent: ' html noframes '},
- br: {empty: true},
- button: {},
- canvas: {parent: ' body p div th td '},
- caption: {parent: ' table '},
- center: {},
- cite: {},
- code: {},
- col: {empty: true, parent: ' table colgroup '},
- colgroup: {parent: ' table '},
- dd: {parent: ' dl '},
- del: {},
- dfn: {},
- dir: {},
- div: {},
- dl: {},
- dt: {parent: ' dl '},
- em: {},
- embed: {},
- fieldset: {},
- font: {},
- form: {},
- frame: {empty: true, parent: ' frameset '},
- frameset: {parent: ' html frameset '},
- h1: {},
- h2: {},
- h3: {},
- h4: {},
- h5: {},
- h6: {},
- head: {parent: ' html '},
- html: {parent: '*'},
- hr: {empty: true},
- i: {},
- iframe: {},
- img: {empty: true},
- input: {empty: true},
- ins: {},
- kbd: {},
- label: {},
- legend: {parent: ' fieldset '},
- li: {parent: ' dir menu ol ul '},
- link: {empty: true, parent: ' head '},
- map: {},
- menu: {},
- meta: {empty: true, parent: ' head noframes noscript '},
- noframes: {parent: ' html body '},
- noscript: {parent: ' body head noframes '},
- object: {},
- ol: {},
- optgroup: {parent: ' select '},
- option: {parent: ' optgroup select '},
- p: {},
- param: {empty: true, parent: ' applet object '},
- pre: {},
- q: {},
- samp: {},
- script: {empty: true, parent: ' body div frame head iframe p pre span '},
- select: {},
- small: {},
- span: {},
- strong: {},
- style: {parent: ' head ', empty: true},
- sub: {},
- sup: {},
- table: {},
- tbody: {parent: ' table '},
- td: {parent: ' tr '},
- textarea: {},
- tfoot: {parent: ' table '},
- th: {parent: ' tr '},
- thead: {parent: ' table '},
- title: {parent: ' head '},
- tr: {parent: ' table tbody thead tfoot '},
- tt: {},
- u: {},
- ul: {},
- 'var': {}
- },
-
- ids, // HTML ids
- implied, // Implied globals
- inblock,
- indent,
- jsonmode,
- lines,
- lookahead,
- member,
- membersOnly,
- nexttoken,
- noreach,
- option,
- predefined, // Global variables defined by option
- prereg,
- prevtoken,
-
- rhino = {
- defineClass : false,
- deserialize : false,
- gc : false,
- help : false,
- load : false,
- loadClass : false,
- print : false,
- quit : false,
- readFile : false,
- readUrl : false,
- runCommand : false,
- seal : false,
- serialize : false,
- spawn : false,
- sync : false,
- toint32 : false,
- version : false
- },
-
- scope, // The current scope
-
- sidebar = {
- System : false
- },
-
- src,
- stack,
-
-// standard contains the global names that are provided by the
-// ECMAScript standard.
-
- standard = {
- Array : false,
- Boolean : false,
- Date : false,
- decodeURI : false,
- decodeURIComponent : false,
- encodeURI : false,
- encodeURIComponent : false,
- Error : false,
- 'eval' : false,
- EvalError : false,
- Function : false,
- hasOwnProperty : false,
- isFinite : false,
- isNaN : false,
- JSON : false,
- Math : false,
- Number : false,
- Object : false,
- parseInt : false,
- parseFloat : false,
- RangeError : false,
- ReferenceError : false,
- RegExp : false,
- String : false,
- SyntaxError : false,
- TypeError : false,
- URIError : false
- },
-
- standard_member = {
- E : true,
- LN2 : true,
- LN10 : true,
- LOG2E : true,
- LOG10E : true,
- PI : true,
- SQRT1_2 : true,
- SQRT2 : true,
- MAX_VALUE : true,
- MIN_VALUE : true,
- NEGATIVE_INFINITY : true,
- POSITIVE_INFINITY : true
- },
-
- strict_mode,
- syntax = {},
- tab,
- token,
- urls,
- warnings,
-
-// widget contains the global names which are provided to a Yahoo
-// (fna Konfabulator) widget.
-
- widget = {
- alert : true,
- animator : true,
- appleScript : true,
- beep : true,
- bytesToUIString : true,
- Canvas : true,
- chooseColor : true,
- chooseFile : true,
- chooseFolder : true,
- closeWidget : true,
- COM : true,
- convertPathToHFS : true,
- convertPathToPlatform : true,
- CustomAnimation : true,
- escape : true,
- FadeAnimation : true,
- filesystem : true,
- Flash : true,
- focusWidget : true,
- form : true,
- FormField : true,
- Frame : true,
- HotKey : true,
- Image : true,
- include : true,
- isApplicationRunning : true,
- iTunes : true,
- konfabulatorVersion : true,
- log : true,
- md5 : true,
- MenuItem : true,
- MoveAnimation : true,
- openURL : true,
- play : true,
- Point : true,
- popupMenu : true,
- preferenceGroups : true,
- preferences : true,
- print : true,
- prompt : true,
- random : true,
- Rectangle : true,
- reloadWidget : true,
- ResizeAnimation : true,
- resolvePath : true,
- resumeUpdates : true,
- RotateAnimation : true,
- runCommand : true,
- runCommandInBg : true,
- saveAs : true,
- savePreferences : true,
- screen : true,
- ScrollBar : true,
- showWidgetPreferences : true,
- sleep : true,
- speak : true,
- Style : true,
- suppressUpdates : true,
- system : true,
- tellWidget : true,
- Text : true,
- TextArea : true,
- Timer : true,
- unescape : true,
- updateNow : true,
- URL : true,
- Web : true,
- widget : true,
- Window : true,
- XMLDOM : true,
- XMLHttpRequest : true,
- yahooCheckLogin : true,
- yahooLogin : true,
- yahooLogout : true
- },
-
-// xmode is used to adapt to the exceptions in html parsing.
-// It can have these states:
-// false .js script file
-// html
-// outer
-// script
-// style
-// scriptstring
-// styleproperty
-
- xmode,
- xquote,
-
-// 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*([(){}\[.,:;'"~\?\]#@]|==?=?|\/(\*(jslint|members?|global)?|=|\/)?|\*[\/=]?|\+[+=]?|-[\-=]?|%=?|&[&=]?|\|[|=]?|>>?>?=?|<([\/=!]|\!(\[|--)?|<=?)?|\^=?|\!=?=?|[a-zA-Z_$][a-zA-Z0-9_$]*|[0-9]+([xX][0-9a-fA-F]+|\.[0-9]*)?([eE][+\-]?[0-9]+)?)/,
-// html token
-//////// hx = /^\s*(['"=>\/&#]|<(?:\/|\!(?:--)?)?|[a-zA-Z][a-zA-Z0-9_\-]*|[0-9]+|--|.)/,
- hx = /^\s*(['"=>\/&#]|<(?:\/|\!(?:--)?)?|[a-zA-Z][a-zA-Z0-9_\-]*|[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,
-// outer html token
- ox = /[>&]|<[\/!]?|--/,
-// star slash
- lx = /\*\/|\/\*/,
-// identifier
- ix = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/,
-// javascript url
- jx = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livescript)\s*:/i,
-// url badness
- ux = /&|\+|\u00AD|\.\.|\/\*|%[^;]|base64|url|expression|data|mailto/i,
-// style
- sx = /^\s*([{:#%.=,>+\[\]@()"';]|\*=?|\$=|\|=|\^=|~=|[a-zA-Z_][a-zA-Z0-9_\-]*|[0-9]+|<\/|\/\*)/,
- ssx = /^\s*([@#!"'};:\-%.=,+\[\]()*_]|[a-zA-Z][a-zA-Z0-9._\-]*|\/\*?|\d+(?:\.\d+)?|<\/)/,
-// attributes characters
- qx = /[^a-zA-Z0-9-_\/ ]/,
-// query characters for ids
- dx = /[\[\]\/\\"'*<>.&:(){}+=#]/,
-
- rx = {
- outer: hx,
- html: hx,
- style: sx,
- styleproperty: ssx
- };
-
- function F() {}
-
- if (typeof Object.create !== 'function') {
- Object.create = function (o) {
- F.prototype = o;
- return new F();
- };
- }
-
-
- function is_own(object, name) {
- return Object.prototype.hasOwnProperty.call(object, name);
- }
-
-
- function combine(t, o) {
- var n;
- for (n in o) {
- if (is_own(o, n)) {
- t[n] = o[n];
- }
- }
- }
-
- String.prototype.entityify = function () {
- return this.
- replace(/&/g, '&').
- replace(/</g, '<').
- replace(/>/g, '>');
- };
-
- String.prototype.isAlpha = function () {
- return (this >= 'a' && this <= 'z\uffff') ||
- (this >= 'A' && this <= 'Z\uffff');
- };
-
-
- String.prototype.isDigit = function () {
- return (this >= '0' && this <= '9');
- };
-
-
- String.prototype.supplant = function (o) {
- return this.replace(/\{([^{}]*)\}/g, function (a, b) {
- var r = o[b];
- return typeof r === 'string' || typeof r === 'number' ? r : a;
- });
- };
-
- String.prototype.name = function () {
-
-// If the string looks like an identifier, then we can return it as is.
-// If the string contains no control characters, no quote characters, and no
-// backslash characters, then we can simply slap some quotes around it.
-// Otherwise we must also replace the offending characters with safe
-// sequences.
-
- if (ix.test(this)) {
- return this;
- }
- if (nx.test(this)) {
- return '"' + this.replace(nxg, function (a) {
- var c = escapes[a];
- if (c) {
- return c;
- }
- return '\\u' + ('0000' + a.charCodeAt().toString(16)).slice(-4);
- }) + '"';
- }
- return '"' + this + '"';
- };
-
-
- function assume() {
- if (!option.safe) {
- if (option.rhino) {
- combine(predefined, rhino);
- }
- if (option.devel) {
- combine(predefined, devel);
- }
- if (option.browser || option.sidebar) {
- combine(predefined, browser);
- }
- if (option.sidebar) {
- combine(predefined, sidebar);
- }
- if (option.widget) {
- combine(predefined, widget);
- }
- }
- }
-
-
-// Produce an error warning.
-
- function quit(m, l, ch) {
- throw {
- name: 'JSLintError',
- line: l,
- character: ch,
- message: m + " (" + Math.floor((l / lines.length) * 100) +
- "% scanned)."
- };
- }
-
- function warning(m, t, a, b, c, d) {
- var ch, l, w;
- t = t || nexttoken;
- if (t.id === '(end)') { // `~
- t = token;
- }
- l = t.line || 0;
- ch = t.from || 0;
- w = {
- id: '(error)',
- raw: m,
- evidence: lines[l - 1] || '',
- line: l,
- character: ch,
- a: a,
- b: b,
- c: c,
- d: d
- };
- w.reason = m.supplant(w);
- JSLINT.errors.push(w);
- if (option.passfail) {
- quit('Stopping. ', l, ch);
- }
- warnings += 1;
- if (warnings >= option.maxerr) {
- quit("Too many errors.", l, ch);
- }
- return w;
- }
-
- function warningAt(m, l, ch, a, b, c, d) {
- return warning(m, {
- line: l,
- from: ch
- }, a, b, c, d);
- }
-
- function error(m, t, a, b, c, d) {
- var w = warning(m, t, a, b, c, d);
- quit("Stopping, unable to continue.", w.line, w.character);
- }
-
- function errorAt(m, l, ch, a, b, c, d) {
- return error(m, {
- line: l,
- from: ch
- }, a, b, c, d);
- }
-
-
-
-// lexical analysis
-
- var lex = (function lex() {
- var character, from, line, s;
-
-// Private lex methods
-
- function nextLine() {
- var at;
- if (line >= lines.length) {
- return false;
- }
- character = 1;
- s = lines[line];
- line += 1;
- at = s.search(/ \t/);
- if (at >= 0) {
- warningAt("Mixed spaces and tabs.", line, at + 1);
- }
- s = s.replace(/\t/g, tab);
- at = s.search(cx);
- if (at >= 0) {
- warningAt("Unsafe character.", line, at);
- }
- if (option.maxlen && option.maxlen < s.length) {
- warningAt("Line too long.", line, s.length);
- }
- return true;
- }
-
-// Produce a token object. The token inherits from a syntax symbol.
-
- function it(type, value) {
- var i, t;
- if (type === '(color)') {
- t = {type: type};
- } else if (type === '(punctuator)' ||
- (type === '(identifier)' && is_own(syntax, value))) {
- t = syntax[value] || syntax['(error)'];
- } else {
- t = syntax[type];
- }
- t = Object.create(t);
- if (type === '(string)' || type === '(range)') {
- if (jx.test(value)) {
- warningAt("Script URL.", line, from);
- }
- }
- if (type === '(identifier)') {
- t.identifier = true;
- if (value === '__iterator__' || value === '__proto__') {
- errorAt("Reserved name '{a}'.",
- line, from, value);
- } else if (option.nomen &&
- (value.charAt(0) === '_' ||
- value.charAt(value.length - 1) === '_')) {
- warningAt("Unexpected {a} in '{b}'.", line, from,
- "dangling '_'", value);
- }
- }
- t.value = value;
- t.line = line;
- t.character = character;
- t.from = from;
- i = t.id;
- if (i !== '(endline)') {
- prereg = i &&
- (('(,=:[!&|?{};'.indexOf(i.charAt(i.length - 1)) >= 0) ||
- i === 'return');
- }
- return t;
- }
-
-// Public lex methods
-
- return {
- init: function (source) {
- if (typeof source === 'string') {
- lines = source.
- replace(/\r\n/g, '\n').
- replace(/\r/g, '\n').
- split('\n');
- } else {
- lines = source;
- }
- 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 xquote:
- case '\\':
- warningAt("Unexpected '{a}'.", line, character, c);
- }
- value += c;
- }
-
- },
-
-// token -- this is called by advance to get the next token.
-
- token: function () {
- var b, c, captures, d, depth, high, i, l, low, q, t;
-
- function match(x) {
- var r = x.exec(s), r1;
- if (r) {
- l = r[0].length;
- r1 = r[1];
- c = r1.charAt(0);
- s = s.substr(l);
- from = character + l - r1.length;
- character += l;
- return r1;
- }
- }
-
- function string(x) {
- var c, j, r = '';
-
- if (jsonmode && x !== '"') {
- warningAt("Strings must use doublequote.",
- line, character);
- }
-
- if (xquote === x || (xmode === 'scriptstring' && !xquote)) {
- return it('(punctuator)', x);
- }
-
- function esc(n) {
- var i = parseInt(s.substr(j + 1, n), 16);
- j += n;
- if (i >= 32 && i <= 126 &&
- i !== 34 && i !== 92 && i !== 39) {
- warningAt("Unnecessary escapement.", line, character);
- }
- character += n;
- c = String.fromCharCode(i);
- }
- j = 0;
- for (;;) {
- while (j >= s.length) {
- j = 0;
- if (xmode !== 'html' || !nextLine()) {
- errorAt("Unclosed string.", line, from);
- }
- }
- c = s.charAt(j);
- if (c === x) {
- character += 1;
- s = s.substr(j + 1);
- return it('(string)', r, x);
- }
- if (c < ' ') {
- if (c === '\n' || c === '\r') {
- break;
- }
- warningAt("Control character in string: {a}.",
- line, character + j, s.slice(0, j));
- } else if (c === xquote) {
- warningAt("Bad HTML string", line, character + j);
- } else if (c === '<') {
- if (option.safe && xmode === 'html') {
- warningAt("ADsafe string violation.",
- line, character + j);
- } else if (s.charAt(j + 1) === '/' && (xmode || option.safe)) {
- warningAt("Expected '<\\/' and instead saw '</'.", line, character);
- } else if (s.charAt(j + 1) === '!' && (xmode || option.safe)) {
- warningAt("Unexpected '<!' in a string.", line, character);
- }
- } else if (c === '\\') {
- if (xmode === 'html') {
- if (option.safe) {
- warningAt("ADsafe string violation.",
- line, character + j);
- }
- } else if (xmode === 'styleproperty') {
- j += 1;
- character += 1;
- c = s.charAt(j);
- if (c !== x) {
- warningAt("Escapement in style string.",
- line, character + j);
- }
- } else {
- j += 1;
- character += 1;
- c = s.charAt(j);
- switch (c) {
- case xquote:
- warningAt("Bad HTML string", line,
- character + j);
- break;
- case '\\':
- case '\'':
- case '"':
- case '/':
- break;
- case 'b':
- c = '\b';
- break;
- case 'f':
- c = '\f';
- break;
- case 'n':
- c = '\n';
- break;
- case 'r':
- c = '\r';
- break;
- case 't':
- c = '\t';
- break;
- case 'u':
- esc(4);
- break;
- case 'v':
- c = '\v';
- break;
- case 'x':
- if (jsonmode) {
- warningAt("Avoid \\x-.", line, character);
- }
- esc(2);
- break;
- default:
- warningAt("Bad escapement.", line, character);
- }
- }
- }
- r += c;
- character += 1;
- j += 1;
- }
- }
-
- for (;;) {
- if (!s) {
- return it(nextLine() ? '(endline)' : '(end)', '');
- }
- while (xmode === 'outer') {
- i = s.search(ox);
- if (i === 0) {
- break;
- } else if (i > 0) {
- character += 1;
- s = s.slice(i);
- break;
- } else {
- if (!nextLine()) {
- return it('(end)', '');
- }
- }
- }
-// t = match(rx[xmode] || tx);
-// if (!t) {
-// if (xmode === 'html') {
-// return it('(error)', s.charAt(0));
-// } else {
-// t = '';
-// c = '';
-// while (s && s < '!') {
-// s = s.substr(1);
-// }
-// if (s) {
-// errorAt("Unexpected '{a}'.",
-// line, character, s.substr(0, 1));
-// }
-// }
- t = match(rx[xmode] || tx);
- if (!t) {
- t = '';
- c = '';
- while (s && s < '!') {
- s = s.substr(1);
- }
- if (s) {
- if (xmode === 'html') {
- return it('(error)', s.charAt(0));
- } else {
- errorAt("Unexpected '{a}'.",
- line, character, s.substr(0, 1));
- }
- }
- } else {
-
- // identifier
-
- if (c.isAlpha() || c === '_' || c === '$') {
- return it('(identifier)', t);
- }
-
- // number
-
- if (c.isDigit()) {
- if (xmode !== 'style' && !isFinite(Number(t))) {
- warningAt("Bad number '{a}'.",
- line, character, t);
- }
- if (xmode !== 'style' &&
- xmode !== 'styleproperty' &&
- s.substr(0, 1).isAlpha()) {
- warningAt("Missing space after '{a}'.",
- line, character, t);
- }
- if (c === '0') {
- d = t.substr(1, 1);
- if (d.isDigit()) {
- if (token.id !== '.' && xmode !== 'styleproperty') {
- warningAt("Don't use extra leading zeros '{a}'.",
- line, character, t);
- }
- } else if (jsonmode && (d === 'x' || d === 'X')) {
- warningAt("Avoid 0x-. '{a}'.",
- line, character, t);
- }
- }
- if (t.substr(t.length - 1) === '.') {
- warningAt(
- "A trailing decimal point can be confused with a dot '{a}'.",
- line, character, t);
- }
- return it('(number)', t);
- }
- switch (t) {
-
- // string
-
- case '"':
- case "'":
- return string(t);
-
- // // comment
-
- case '//':
- if (src || (xmode && xmode !== 'script')) {
- warningAt("Unexpected comment.", line, character);
- } else if (xmode === 'script' && /<\s*\//i.test(s)) {
- warningAt("Unexpected <\/ in comment.", line, character);
- } else if ((option.safe || xmode === 'script') && ax.test(s)) {
- warningAt("Dangerous comment.", line, character);
- }
- s = '';
- token.comment = true;
- break;
-
- // /* comment
-
- case '/*':
- if (src || (xmode && xmode !== 'script' && xmode !== 'style' && xmode !== 'styleproperty')) {
- warningAt("Unexpected comment.", line, character);
- }
- if (option.safe && ax.test(s)) {
- warningAt("ADsafe comment violation.", line, character);
- }
- for (;;) {
- i = s.search(lx);
- if (i >= 0) {
- break;
- }
- if (!nextLine()) {
- errorAt("Unclosed comment.", line, character);
- } else {
- if (option.safe && ax.test(s)) {
- warningAt("ADsafe comment violation.", line, character);
- }
- }
- }
- character += i + 2;
- if (s.substr(i, 1) === '/') {
- errorAt("Nested comment.", line, character);
- }
- s = s.substr(i + 2);
- token.comment = true;
- break;
-
- // /*members /*jslint /*global
-
- case '/*members':
- case '/*member':
- case '/*jslint':
- case '/*global':
- case '*/':
- return {
- value: t,
- type: 'special',
- line: line,
- character: character,
- from: from
- };
-
- case '':
- break;
- // /
- case '/':
- if (token.id === '/=') {
- errorAt(
-"A regular expression literal can be confused with '/='.", line, from);
- }
- if (prereg) {
- depth = 0;
- captures = 0;
- l = 0;
- for (;;) {
- b = true;
- c = s.charAt(l);
- l += 1;
- switch (c) {
- case '':
- errorAt("Unclosed regular expression.", line, from);
- return;
- case '/':
- if (depth > 0) {
- warningAt("Unescaped '{a}'.", line, from + l, '/');
- }
- c = s.substr(0, l - 1);
- q = {
- g: true,
- i: true,
- m: true
- };
- while (q[s.charAt(l)] === true) {
- q[s.charAt(l)] = false;
- l += 1;
- }
- character += l;
- s = s.substr(l);
- q = s.charAt(0);
- if (q === '/' || q === '*') {
- errorAt("Confusing regular expression.", line, from);
- }
- return it('(regexp)', c);
- case '\\':
- c = s.charAt(l);
- if (c < ' ') {
- warningAt("Unexpected control character in regular expression.", line, from + l);
- } else if (c === '<') {
- warningAt("Unexpected escaped character '{a}' in regular expression.", line, from + l, c);
- }
- l += 1;
- break;
- case '(':
- depth += 1;
- b = false;
- if (s.charAt(l) === '?') {
- l += 1;
- switch (s.charAt(l)) {
- case ':':
- case '=':
- case '!':
- l += 1;
- break;
- default:
- warningAt("Expected '{a}' and instead saw '{b}'.", line, from + l, ':', s.charAt(l));
- }
- } else {
- captures += 1;
- }
- break;
- case '|':
- b = false;
- break;
- case ')':
- if (depth === 0) {
- warningAt("Unescaped '{a}'.", line, from + l, ')');
- } else {
- depth -= 1;
- }
- break;
- case ' ':
- q = 1;
- while (s.charAt(l) === ' ') {
- l += 1;
- q += 1;
- }
- if (q > 1) {
- warningAt("Spaces are hard to count. Use {{a}}.", line, from + l, q);
- }
- break;
- case '[':
- c = s.charAt(l);
- if (c === '^') {
- l += 1;
- if (option.regexp) {
- warningAt("Insecure '{a}'.", line, from + l, c);
- }
- }
- q = false;
- if (c === ']') {
- warningAt("Empty class.", line, from + l - 1);
- q = true;
- }
- klass: do {
- c = s.charAt(l);
- l += 1;
- switch (c) {
- case '[':
- case '^':
- warningAt("Unescaped '{a}'.", line, from + l, c);
- q = true;
- break;
- case '-':
- if (q) {
- q = false;
- } else {
- warningAt("Unescaped '{a}'.", line, from + l, '-');
- q = true;
- }
- break;
- case ']':
- if (!q) {
- warningAt("Unescaped '{a}'.", line, from + l - 1, '-');
- }
- break klass;
- case '\\':
- c = s.charAt(l);
- if (c < ' ') {
- warningAt("Unexpected control character in regular expression.", line, from + l);
- } else if (c === '<') {
- warningAt("Unexpected escaped character '{a}' in regular expression.", line, from + l, c);
- }
- l += 1;
- q = true;
- break;
- case '/':
- warningAt("Unescaped '{a}'.", line, from + l - 1, '/');
- q = true;
- break;
- case '<':
- if (xmode === 'script') {
- c = s.charAt(l);
- if (c === '!' || c === '/') {
- warningAt("HTML confusion in regular expression '<{a}'.", line, from + l, c);
- }
- }
- q = true;
- break;
- default:
- q = true;
- }
- } while (c);
- break;
- case '.':
- if (option.regexp) {
- warningAt("Insecure '{a}'.", line, from + l, c);
- }
- break;
- case ']':
- case '?':
- case '{':
- case '}':
- case '+':
- case '*':
- warningAt("Unescaped '{a}'.", line, from + l, c);
- break;
- case '<':
- if (xmode === 'script') {
- c = s.charAt(l);
- if (c === '!' || c === '/') {
- warningAt("HTML confusion in regular expression '<{a}'.", line, from + l, c);
- }
- }
- }
- if (b) {
- switch (s.charAt(l)) {
- case '?':
- case '+':
- case '*':
- l += 1;
- if (s.charAt(l) === '?') {
- l += 1;
- }
- break;
- case '{':
- l += 1;
- c = s.charAt(l);
- if (c < '0' || c > '9') {
- warningAt("Expected a number and instead saw '{a}'.", line, from + l, c);
- }
- l += 1;
- low = +c;
- for (;;) {
- c = s.charAt(l);
- if (c < '0' || c > '9') {
- break;
- }
- l += 1;
- low = +c + (low * 10);
- }
- high = low;
- if (c === ',') {
- l += 1;
- high = Infinity;
- c = s.charAt(l);
- if (c >= '0' && c <= '9') {
- l += 1;
- high = +c;
- for (;;) {
- c = s.charAt(l);
- if (c < '0' || c > '9') {
- break;
- }
- l += 1;
- high = +c + (high * 10);
- }
- }
- }
- if (s.charAt(l) !== '}') {
- warningAt("Expected '{a}' and instead saw '{b}'.", line, from + l, '}', c);
- } else {
- l += 1;
- }
- if (s.charAt(l) === '?') {
- l += 1;
- }
- if (low > high) {
- warningAt("'{a}' should not be greater than '{b}'.", line, from + l, low, high);
- }
- }
- }
- }
- c = s.substr(0, l - 1);
- character += l;
- s = s.substr(l);
- return it('(regexp)', c);
- }
- return it('(punctuator)', t);
-
- // punctuator
-
- case '<!--':
- l = line;
- c = character;
- for (;;) {
- i = s.indexOf('--');
- if (i >= 0) {
- break;
- }
- i = s.indexOf('<!');
- if (i >= 0) {
- errorAt("Nested HTML comment.",
- line, character + i);
- }
- if (!nextLine()) {
- errorAt("Unclosed HTML comment.", l, c);
- }
- }
- l = s.indexOf('<!');
- if (l >= 0 && l < i) {
- errorAt("Nested HTML comment.",
- line, character + l);
- }
- character += i;
- if (s[i + 2] !== '>') {
- errorAt("Expected -->.", line, character);
- }
- character += 3;
- s = s.slice(i + 3);
- break;
- case '#':
- if (xmode === 'html' || xmode === 'styleproperty') {
- for (;;) {
- c = s.charAt(0);
- if ((c < '0' || c > '9') &&
- (c < 'a' || c > 'f') &&
- (c < 'A' || c > 'F')) {
- break;
- }
- character += 1;
- s = s.substr(1);
- t += c;
- }
- if (t.length !== 4 && t.length !== 7) {
- warningAt("Bad hex color '{a}'.", line,
- from + l, t);
- }
- return it('(color)', t);
- }
- return it('(punctuator)', t);
- default:
- if (xmode === 'outer' && c === '&') {
- character += 1;
- s = s.substr(1);
- for (;;) {
- c = s.charAt(0);
- character += 1;
- s = s.substr(1);
- if (c === ';') {
- break;
- }
- if (!((c >= '0' && c <= '9') ||
- (c >= 'a' && c <= 'z') ||
- c === '#')) {
- errorAt("Bad entity", line, from + l,
- character);
- }
- }
- break;
- }
- return it('(punctuator)', t);
- }
- }
- }
- }
- };
- }());
-
-
- function addlabel(t, type) {
-
- if (option.safe && funct['(global)'] && typeof predefined[t] !== 'boolean') {
- warning('ADsafe global: ' + t + '.', token);
- } else if (t === 'hasOwnProperty') {
- warning("'hasOwnProperty' is a really bad name.");
- }
-
-// Define t in the current function in the current scope.
-
- if (is_own(funct, t) && !funct['(global)']) {
- warning(funct[t] === true ?
- "'{a}' was used before it was defined." :
- "'{a}' is already defined.",
- nexttoken, t);
- }
- funct[t] = type;
- if (funct['(global)']) {
- global[t] = funct;
- if (is_own(implied, t)) {
- warning("'{a}' was used before it was defined.", nexttoken, t);
- delete implied[t];
- }
- } else {
- scope[t] = funct;
- }
- }
-
-
- function doOption() {
- var b, obj, filter, o = nexttoken.value, t, v;
- switch (o) {
- case '*/':
- error("Unbegun comment.");
- break;
- case '/*members':
- case '/*member':
- o = '/*members';
- if (!membersOnly) {
- membersOnly = {};
- }
- obj = membersOnly;
- break;
- case '/*jslint':
- if (option.safe) {
- warning("ADsafe restriction.");
- }
- obj = option;
- filter = boolOptions;
- break;
- case '/*global':
- if (option.safe) {
- warning("ADsafe restriction.");
- }
- obj = predefined;
- break;
- default:
- }
- t = lex.token();
-loop: for (;;) {
- for (;;) {
- if (t.type === 'special' && t.value === '*/') {
- break loop;
- }
- if (t.id !== '(endline)' && t.id !== ',') {
- break;
- }
- t = lex.token();
- }
- if (t.type !== '(string)' && t.type !== '(identifier)' &&
- o !== '/*members') {
- error("Bad option.", t);
- }
- v = lex.token();
- if (v.id === ':') {
- v = lex.token();
- if (obj === membersOnly) {
- error("Expected '{a}' and instead saw '{b}'.",
- t, '*/', ':');
- }
- if (t.value === 'indent' && o === '/*jslint') {
- b = +v.value;
- if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
- Math.floor(b) !== b) {
- error("Expected a small integer and instead saw '{a}'.",
- v, v.value);
- }
- obj.white = true;
- obj.indent = b;
- } else if (t.value === 'maxerr' && o === '/*jslint') {
- b = +v.value;
- if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
- Math.floor(b) !== b) {
- error("Expected a small integer and instead saw '{a}'.",
- v, v.value);
- }
- obj.maxerr = b;
- } else if (t.value === 'maxlen' && o === '/*jslint') {
- b = +v.value;
- if (typeof b !== 'number' || !isFinite(b) || b <= 0 ||
- Math.floor(b) !== b) {
- error("Expected a small integer and instead saw '{a}'.",
- v, v.value);
- }
- obj.maxlen = b;
- } else if (v.value === 'true') {
- obj[t.value] = true;
- } else if (v.value === 'false') {
- obj[t.value] = false;
- } else {
- error("Bad option value.", v);
- }
- t = lex.token();
- } else {
- if (o === '/*jslint') {
- error("Missing option value.", t);
- }
- obj[t.value] = false;
- t = v;
- }
- }
- if (filter) {
- assume();
- }
- }
-
-
-// We need a peek function. If it has an argument, it peeks that much farther
-// ahead. It is used to distinguish
-// for ( var i in ...
-// from
-// for ( var i = ...
-
- function peek(p) {
- var i = p || 0, j = 0, t;
-
- while (j <= i) {
- t = lookahead[j];
- if (!t) {
- t = lookahead[j] = lex.token();
- }
- j += 1;
- }
- return t;
- }
-
-
-
-// Produce the next token. It looks for programming errors.
-
- function advance(id, t) {
- switch (token.id) {
- case '(number)':
- if (nexttoken.id === '.') {
- warning(
-"A dot following a number can be confused with a decimal point.", token);
- }
- break;
- case '-':
- if (nexttoken.id === '-' || nexttoken.id === '--') {
- warning("Confusing minusses.");
- }
- break;
- case '+':
- if (nexttoken.id === '+' || nexttoken.id === '++') {
- warning("Confusing plusses.");
- }
- break;
- }
- if (token.type === '(string)' || token.identifier) {
- anonname = token.value;
- }
-
- if (id && nexttoken.id !== id) {
- if (t) {
- if (nexttoken.id === '(end)') {
- warning("Unmatched '{a}'.", t, t.id);
- } else {
- warning("Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",
- nexttoken, id, t.id, t.line, nexttoken.value);
- }
- } else if (nexttoken.type !== '(identifier)' ||
- nexttoken.value !== id) {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, id, nexttoken.value);
- }
- }
- prevtoken = token;
- token = nexttoken;
- for (;;) {
- nexttoken = lookahead.shift() || lex.token();
- if (nexttoken.id === '(end)' || nexttoken.id === '(error)') {
- return;
- }
- if (nexttoken.type === 'special') {
- doOption();
- } else {
- if (nexttoken.id !== '(endline)') {
- break;
- }
- }
- }
- }
-
-
-// This is the heart of JSLINT, the Pratt parser. In addition to parsing, it
-// is looking for ad hoc lint patterns. We add to Pratt's model .fud, 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 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 key to the parsing method called Top Down Operator Precedence.
-
- function parse(rbp, initial) {
- var left;
- if (nexttoken.id === '(end)') {
- error("Unexpected early end of program.", token);
- }
- advance();
- if (option.safe && typeof predefined[token.value] === 'boolean' &&
- (nexttoken.id !== '(' && nexttoken.id !== '.')) {
- warning('ADsafe violation.', token);
- }
- 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) {
- advance();
- 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 || xmode === 'styleproperty' || xmode === 'style') {
- if (left.character !== right.from && left.line === right.line) {
- warning("Unexpected space after '{a}'.", right, left.value);
- }
- }
- }
-
- function nospace(left, right) {
- left = left || token;
- right = right || nexttoken;
- if (option.white && !left.comment) {
- if (left.line === right.line) {
- adjacent(left, right);
- }
- }
- }
-
-
- function nonadjacent(left, right) {
- if (option.white) {
- left = left || token;
- right = right || nexttoken;
- if (left.line === right.line && left.character === right.from) {
- warning("Missing space after '{a}'.",
- nexttoken, left.value);
- }
- }
- }
-
- function nobreaknonadjacent(left, right) {
- left = left || token;
- right = right || nexttoken;
- if (!option.laxbreak && left.line !== right.line) {
- warning("Bad line breaking before '{a}'.", right, right.id);
- } else if (option.white) {
- left = left || token;
- right = right || nexttoken;
- if (left.character === right.from) {
- warning("Missing space after '{a}'.",
- nexttoken, left.value);
- }
- }
- }
-
- function indentation(bias) {
- var i;
- if (option.white && nexttoken.id !== '(end)') {
- i = indent + (bias || 0);
- if (nexttoken.from !== i) {
- warning("Expected '{a}' to have an indentation at {b} instead at {c}.",
- nexttoken, nexttoken.value, i, nexttoken.from);
- }
- }
- }
-
- function nolinebreak(t) {
- t = t || token;
- if (t.line !== nexttoken.line) {
- warning("Line breaking error '{a}'.", t, t.value);
- }
- }
-
-
- function comma() {
- if (token.line !== nexttoken.line) {
- if (!option.laxbreak) {
- warning("Bad line breaking before '{a}'.", token, nexttoken.id);
- }
- } else if (token.character !== nexttoken.from && option.white) {
- warning("Unexpected space after '{a}'.", nexttoken, token.value);
- }
- advance(',');
- nonadjacent(token, nexttoken);
- }
-
-
-// Functional constructors for making the symbols that will be inherited by
-// tokens.
-
- function symbol(s, p) {
- var x = syntax[s];
- if (!x || typeof x !== 'object') {
- syntax[s] = x = {
- id: s,
- lbp: p,
- value: s
- };
- }
- return x;
- }
-
-
- function delim(s) {
- return symbol(s, 0);
- }
-
-
- function stmt(s, f) {
- var x = delim(s);
- x.identifier = x.reserved = true;
- x.fud = f;
- return x;
- }
-
-
- function blockstmt(s, f) {
- var x = stmt(s, f);
- x.block = true;
- return x;
- }
-
-
- function reserveName(x) {
- var c = x.id.charAt(0);
- if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
- x.identifier = x.reserved = true;
- }
- return x;
- }
-
-
- function prefix(s, f) {
- var x = symbol(s, 150);
- reserveName(x);
- x.nud = (typeof f === 'function') ? f : function () {
- this.right = parse(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 (this.id === 'this' || this.id === 'arguments') {
- if (strict_mode && funct['(global)']) {
- warning("Strict violation.", this);
- } else if (option.safe) {
- warning("ADsafe violation.", this);
- }
- }
- return this;
- });
- }
-
-
- function infix(s, f, p, w) {
- var x = symbol(s, p);
- reserveName(x);
- x.led = function (left) {
- if (!w) {
- nobreaknonadjacent(prevtoken, token);
- nonadjacent(token, nexttoken);
- }
- if (typeof f === 'function') {
- return f(left, this);
- } else {
- this.left = left;
- this.right = parse(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 = parse(100);
- if ((left && left.id === 'NaN') || (right && right.id === 'NaN')) {
- warning("Use the isNaN function to compare with NaN.", this);
- } else if (f) {
- f.apply(this, [left, right]);
- }
- if (left.id === '!') {
- warning("Confusing use of '{a}'.", left, '!');
- }
- if (right.id === '!') {
- warning("Confusing use of '{a}'.", left, '!');
- }
- this.left = left;
- this.right = right;
- return this;
- };
- return x;
- }
-
-
- function isPoorRelation(node) {
- return node &&
- ((node.type === '(number)' && +node.value === 0) ||
- (node.type === '(string)' && node.value === ' ') ||
- node.type === 'true' ||
- node.type === 'false' ||
- node.type === 'undefined' ||
- node.type === 'null');
- }
-
-
- function assignop(s, f) {
- symbol(s, 20).exps = true;
- return infix(s, function (left, that) {
- var l;
- that.left = left;
- if (predefined[left.value] === false &&
- scope[left.value]['(global)'] === true) {
- warning('Read only.', left);
- }
- if (option.safe) {
- l = left;
- do {
- if (typeof predefined[l.value] === 'boolean') {
- warning('ADsafe violation.', l);
- }
- l = l.left;
- } while (l);
- }
- if (left) {
- if (left.id === '.' || left.id === '[') {
- if (!left.left || left.left.value === 'arguments') {
- warning('Bad assignment.', that);
- }
- that.right = parse(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 = parse(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 = parse(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)) {
- parse(19);
- return that;
- }
- if (left === syntax['function']) {
- warning(
-"Expected an identifier in an assignment, and instead saw a function invocation.",
- token);
- }
- return that;
- }
- error("Bad assignment.", that);
- }, 20);
- }
-
-
- function suffix(s, f) {
- var x = symbol(s, 150);
- x.led = function (left) {
- if (option.plusplus) {
- warning("Unexpected use of '{a}'.", this, this.id);
- } else if ((!left.identifier || left.reserved) && left.id !== '.' && left.id !== '[') {
- warning("Bad operand.", this);
- }
- this.left = left;
- return this;
- };
- return x;
- }
-
-
- function optionalidentifier() {
- if (nexttoken.reserved) {
- warning("Expected an identifier and instead saw '{a}' (a reserved word).",
- nexttoken, nexttoken.id);
- }
- if (nexttoken.identifier) {
- advance();
- return token.value;
- }
- }
-
-
- function identifier() {
- var i = optionalidentifier();
- if (i) {
- return i;
- }
- if (token.id === 'function' && nexttoken.id === '(') {
- warning("Missing name in function statement.");
- } else {
- error("Expected an identifier and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- }
-
- function reachable(s) {
- var i = 0, t;
- if (nexttoken.id !== ';' || noreach) {
- return;
- }
- for (;;) {
- t = peek(i);
- if (t.reach) {
- return;
- }
- if (t.id !== '(endline)') {
- if (t.id === 'function') {
- warning(
-"Inner functions should be listed at the top of the outer function.", t);
- break;
- }
- warning("Unreachable '{a}' after '{b}'.", t, t.value, s);
- break;
- }
- i += 1;
- }
- }
-
-
- function statement(noindent) {
- var i = indent, r, s = scope, t = nexttoken;
-
-// We don't like the empty statement.
-
- if (t.id === ';') {
- warning("Unnecessary semicolon.", t);
- advance(';');
- return;
- }
-
-// Is this a labelled statement?
-
- if (t.identifier && !t.reserved && peek().id === ':') {
- advance();
- advance(':');
- scope = Object.create(s);
- addlabel(t.value, 'label');
- if (!nexttoken.labelled) {
- warning("Label '{a}' on {b} statement.",
- nexttoken, t.value, nexttoken.value);
- }
- if (jx.test(t.value + ':')) {
- warning("Label '{a}' looks like a javascript url.",
- t, t.value);
- }
- nexttoken.label = t.value;
- t = nexttoken;
- }
-
-// Parse the statement.
-
- if (!noindent) {
- indentation();
- }
- r = parse(0, true);
-
-// Look for the final semicolon.
-
- if (!t.block) {
- if (!r || !r.exps) {
- warning(
-"Expected an assignment or function call and instead saw an expression.",
- token);
- } else if (r.id === '(' && r.left.id === 'new') {
- warning("Do not use 'new' for side effects.");
- }
- if (nexttoken.id !== ';') {
- warningAt("Missing semicolon.", token.line,
- token.from + token.value.length);
- } else {
- adjacent(token, nexttoken);
- advance(';');
- nonadjacent(token, nexttoken);
- }
- }
-
-// Restore the indentation.
-
- indent = i;
- scope = s;
- return r;
- }
-
-
- function use_strict() {
- if (nexttoken.value === 'use strict') {
- advance();
- advance(';');
- strict_mode = true;
- return true;
- } else {
- return false;
- }
- }
-
-
- function statements(begin) {
- var a = [], f, p;
- if (begin && !use_strict() && option.strict) {
- warning('Missing "use strict" statement.', nexttoken);
- }
- if (option.adsafe) {
- switch (begin) {
- case 'script':
- if (!adsafe_may) {
- if (nexttoken.value !== 'ADSAFE' ||
- peek(0).id !== '.' ||
- (peek(1).value !== 'id' &&
- peek(1).value !== 'go')) {
- error('ADsafe violation: Missing ADSAFE.id or ADSAFE.go.',
- nexttoken);
- }
- }
- if (nexttoken.value === 'ADSAFE' &&
- peek(0).id === '.' &&
- peek(1).value === 'id') {
- if (adsafe_may) {
- error('ADsafe violation.', nexttoken);
- }
- advance('ADSAFE');
- advance('.');
- advance('id');
- advance('(');
- if (nexttoken.value !== adsafe_id) {
- error('ADsafe violation: id does not match.', nexttoken);
- }
- advance('(string)');
- advance(')');
- advance(';');
- adsafe_may = true;
- }
- break;
- case 'lib':
- if (nexttoken.value === 'ADSAFE') {
- advance('ADSAFE');
- advance('.');
- advance('lib');
- advance('(');
- advance('(string)');
- comma();
- f = parse(0);
- if (f.id !== 'function') {
- error('The second argument to lib must be a function.', f);
- }
- p = f.funct['(params)'];
- p = p && p.join(', ');
- if (p && p !== 'lib') {
- error("Expected '{a}' and instead saw '{b}'.",
- f, '(lib)', '(' + p + ')');
- }
- advance(')');
- advance(';');
- return a;
- } else {
- error("ADsafe lib violation.");
- }
- }
- }
- while (!nexttoken.reach && nexttoken.id !== '(end)') {
- if (nexttoken.id === ';') {
- warning("Unnecessary semicolon.");
- advance(';');
- } else {
- a.push(statement());
- }
- }
- return a;
- }
-
-
- function block(f) {
- var a, b = inblock, old_indent = indent, s = scope, t;
- inblock = f;
- scope = Object.create(scope);
- nonadjacent(token, nexttoken);
- t = nexttoken;
- if (nexttoken.id === '{') {
- advance('{');
- if (nexttoken.id !== '}' || token.line !== nexttoken.line) {
- indent += option.indent;
- while (!f && nexttoken.from > indent) {
- indent += option.indent;
- }
- if (!f) {
- use_strict();
- }
- a = statements();
- indent -= option.indent;
- indentation();
- }
- advance('}', t);
- indent = old_indent;
- } else {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, '{', nexttoken.value);
- noreach = true;
- a = [statement()];
- noreach = false;
- }
- funct['(verb)'] = null;
- scope = s;
- inblock = b;
- return a;
- }
-
-
-// An identity function, used by string and number tokens.
-
- function idValue() {
- return this;
- }
-
-
- 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);
- }
- }
-
-// CSS parsing.
-
-
- function cssName() {
- if (nexttoken.identifier) {
- advance();
- return true;
- }
- }
-
- function cssNumber() {
- if (nexttoken.id === '-') {
- advance('-');
- adjacent();
- nolinebreak();
- }
- if (nexttoken.type === '(number)') {
- advance('(number)');
- return true;
- }
- }
-
- function cssString() {
- if (nexttoken.type === '(string)') {
- advance();
- return true;
- }
- }
-
- function cssColor() {
- var i, number, value;
- if (nexttoken.identifier) {
- value = nexttoken.value;
- if (value === 'rgb' || value === 'rgba') {
- advance();
- advance('(');
- for (i = 0; i < 3; i += 1) {
- if (i) {
- advance(',');
- }
- number = nexttoken.value;
- if (nexttoken.type !== '(number)' || number < 0) {
- warning("Expected a positive number and instead saw '{a}'",
- nexttoken, number);
- advance();
- } else {
- advance();
- if (nexttoken.id === '%') {
- advance('%');
- if (number > 100) {
- warning("Expected a percentage and instead saw '{a}'",
- token, number);
- }
- } else {
- if (number > 255) {
- warning("Expected a small number and instead saw '{a}'",
- token, number);
- }
- }
- }
- }
- if (value === 'rgba') {
- advance(',');
- number = +nexttoken.value;
- if (nexttoken.type !== '(number)' || number < 0 || number > 1) {
- warning("Expected a number between 0 and 1 and instead saw '{a}'",
- nexttoken, number);
- }
- advance();
- if (nexttoken.id === '%') {
- warning("Unexpected '%'.");
- advance('%');
- }
- }
- advance(')');
- return true;
- } else if (cssColorData[nexttoken.value] === true) {
- advance();
- return true;
- }
- } else if (nexttoken.type === '(color)') {
- advance();
- return true;
- }
- return false;
- }
-
- function cssLength() {
- if (nexttoken.id === '-') {
- advance('-');
- adjacent();
- nolinebreak();
- }
- if (nexttoken.type === '(number)') {
- advance();
- if (nexttoken.type !== '(string)' &&
- cssLengthData[nexttoken.value] === true) {
- adjacent();
- advance();
- } else if (+token.value !== 0) {
- warning("Expected a linear unit and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- return true;
- }
- return false;
- }
-
- function cssLineHeight() {
- if (nexttoken.id === '-') {
- advance('-');
- adjacent();
- }
- if (nexttoken.type === '(number)') {
- advance();
- if (nexttoken.type !== '(string)' &&
- cssLengthData[nexttoken.value] === true) {
- adjacent();
- advance();
- }
- return true;
- }
- return false;
- }
-
- function cssWidth() {
- if (nexttoken.identifier) {
- switch (nexttoken.value) {
- case 'thin':
- case 'medium':
- case 'thick':
- advance();
- return true;
- }
- } else {
- return cssLength();
- }
- }
-
- function cssMargin() {
- if (nexttoken.identifier) {
- if (nexttoken.value === 'auto') {
- advance();
- return true;
- }
- } else {
- return cssLength();
- }
- }
-
- function cssAttr() {
- if (nexttoken.identifier && nexttoken.value === 'attr') {
- advance();
- advance('(');
- if (!nexttoken.identifier) {
- warning("Expected a name and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- advance(')');
- return true;
- }
- return false;
- }
-
- function cssCommaList() {
- while (nexttoken.id !== ';') {
- if (!cssName() && !cssString()) {
- warning("Expected a name and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- if (nexttoken.id !== ',') {
- return true;
- }
- comma();
- }
- }
-
- function cssCounter() {
- if (nexttoken.identifier && nexttoken.value === 'counter') {
- advance();
- advance('(');
- if (!nexttoken.identifier) {
- }
- advance();
- if (nexttoken.id === ',') {
- comma();
- if (nexttoken.type !== '(string)') {
- warning("Expected a string and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- }
- advance(')');
- return true;
- }
- if (nexttoken.identifier && nexttoken.value === 'counters') {
- advance();
- advance('(');
- if (!nexttoken.identifier) {
- warning("Expected a name and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- if (nexttoken.id === ',') {
- comma();
- if (nexttoken.type !== '(string)') {
- warning("Expected a string and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- }
- if (nexttoken.id === ',') {
- comma();
- if (nexttoken.type !== '(string)') {
- warning("Expected a string and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- }
- advance(')');
- return true;
- }
- return false;
- }
-
-
- function cssShape() {
- var i;
- if (nexttoken.identifier && nexttoken.value === 'rect') {
- advance();
- advance('(');
- for (i = 0; i < 4; i += 1) {
- if (!cssLength()) {
- warning("Expected a number and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- break;
- }
- }
- advance(')');
- return true;
- }
- return false;
- }
-
- function cssUrl() {
- var c, url;
- if (nexttoken.identifier && nexttoken.value === 'url') {
- nexttoken = lex.range('(', ')');
- url = nexttoken.value;
- c = url.charAt(0);
- if (c === '"' || c === '\'') {
- if (url.slice(-1) !== c) {
- warning("Bad url string.");
- } else {
- url = url.slice(1, -1);
- if (url.indexOf(c) >= 0) {
- warning("Bad url string.");
- }
- }
- }
- if (!url) {
- warning("Missing url.");
- }
- advance();
- if (option.safe && ux.test(url)) {
- error("ADsafe URL violation.");
- }
- urls.push(url);
- return true;
- }
- return false;
- }
-
- cssAny = [cssUrl, function () {
- for (;;) {
- if (nexttoken.identifier) {
- switch (nexttoken.value.toLowerCase()) {
- case 'url':
- cssUrl();
- break;
- case 'expression':
- warning("Unexpected expression '{a}'.",
- nexttoken, nexttoken.value);
- advance();
- break;
- default:
- advance();
- }
- } else {
- if (nexttoken.id === ';' || nexttoken.id === '!' ||
- nexttoken.id === '(end)' || nexttoken.id === '}') {
- return true;
- }
- advance();
- }
- }
- }];
-
- cssBorderStyle = [
- 'none', 'hidden', 'dotted', 'dashed', 'solid', 'double', 'ridge',
- 'inset', 'outset'
- ];
-
- cssBreak = [
- 'auto', 'always', 'avoid', 'left', 'right'
- ];
-
- cssOverflow = [
- 'auto', 'hidden', 'scroll', 'visible'
- ];
-
- cssAttributeData = {
- background: [
- true, 'background-attachment', 'background-color',
- 'background-image', 'background-position', 'background-repeat'
- ],
- 'background-attachment': ['scroll', 'fixed'],
- 'background-color': ['transparent', cssColor],
- 'background-image': ['none', cssUrl],
- 'background-position': [
- 2, [cssLength, 'top', 'bottom', 'left', 'right', 'center']
- ],
- 'background-repeat': [
- 'repeat', 'repeat-x', 'repeat-y', 'no-repeat'
- ],
- 'border': [true, 'border-color', 'border-style', 'border-width'],
- 'border-bottom': [
- true, 'border-bottom-color', 'border-bottom-style',
- 'border-bottom-width'
- ],
- 'border-bottom-color': cssColor,
- 'border-bottom-style': cssBorderStyle,
- 'border-bottom-width': cssWidth,
- 'border-collapse': ['collapse', 'separate'],
- 'border-color': ['transparent', 4, cssColor],
- 'border-left': [
- true, 'border-left-color', 'border-left-style', 'border-left-width'
- ],
- 'border-left-color': cssColor,
- 'border-left-style': cssBorderStyle,
- 'border-left-width': cssWidth,
- 'border-right': [
- true, 'border-right-color', 'border-right-style',
- 'border-right-width'
- ],
- 'border-right-color': cssColor,
- 'border-right-style': cssBorderStyle,
- 'border-right-width': cssWidth,
- 'border-spacing': [2, cssLength],
- 'border-style': [4, cssBorderStyle],
- 'border-top': [
- true, 'border-top-color', 'border-top-style', 'border-top-width'
- ],
- 'border-top-color': cssColor,
- 'border-top-style': cssBorderStyle,
- 'border-top-width': cssWidth,
- 'border-width': [4, cssWidth],
- bottom: [cssLength, 'auto'],
- 'caption-side' : ['bottom', 'left', 'right', 'top'],
- clear: ['both', 'left', 'none', 'right'],
- clip: [cssShape, 'auto'],
- color: cssColor,
- content: [
- 'open-quote', 'close-quote', 'no-open-quote', 'no-close-quote',
- cssString, cssUrl, cssCounter, cssAttr
- ],
- 'counter-increment': [
- cssName, 'none'
- ],
- 'counter-reset': [
- cssName, 'none'
- ],
- cursor: [
- cssUrl, 'auto', 'crosshair', 'default', 'e-resize', 'help', 'move',
- 'n-resize', 'ne-resize', 'nw-resize', 'pointer', 's-resize',
- 'se-resize', 'sw-resize', 'w-resize', 'text', 'wait'
- ],
- direction: ['ltr', 'rtl'],
- display: [
- 'block', 'compact', 'inline', 'inline-block', 'inline-table',
- 'list-item', 'marker', 'none', 'run-in', 'table', 'table-caption',
- 'table-cell', 'table-column', 'table-column-group',
- 'table-footer-group', 'table-header-group', 'table-row',
- 'table-row-group'
- ],
- 'empty-cells': ['show', 'hide'],
- 'float': ['left', 'none', 'right'],
- font: [
- 'caption', 'icon', 'menu', 'message-box', 'small-caption',
- 'status-bar', true, 'font-size', 'font-style', 'font-weight',
- 'font-family'
- ],
- 'font-family': cssCommaList,
- 'font-size': [
- 'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large',
- 'xx-large', 'larger', 'smaller', cssLength
- ],
- 'font-size-adjust': ['none', cssNumber],
- 'font-stretch': [
- 'normal', 'wider', 'narrower', 'ultra-condensed',
- 'extra-condensed', 'condensed', 'semi-condensed',
- 'semi-expanded', 'expanded', 'extra-expanded'
- ],
- 'font-style': [
- 'normal', 'italic', 'oblique'
- ],
- 'font-variant': [
- 'normal', 'small-caps'
- ],
- 'font-weight': [
- 'normal', 'bold', 'bolder', 'lighter', cssNumber
- ],
- height: [cssLength, 'auto'],
- left: [cssLength, 'auto'],
- 'letter-spacing': ['normal', cssLength],
- 'line-height': ['normal', cssLineHeight],
- 'list-style': [
- true, 'list-style-image', 'list-style-position', 'list-style-type'
- ],
- 'list-style-image': ['none', cssUrl],
- 'list-style-position': ['inside', 'outside'],
- 'list-style-type': [
- 'circle', 'disc', 'square', 'decimal', 'decimal-leading-zero',
- 'lower-roman', 'upper-roman', 'lower-greek', 'lower-alpha',
- 'lower-latin', 'upper-alpha', 'upper-latin', 'hebrew', 'katakana',
- 'hiragana-iroha', 'katakana-oroha', 'none'
- ],
- margin: [4, cssMargin],
- 'margin-bottom': cssMargin,
- 'margin-left': cssMargin,
- 'margin-right': cssMargin,
- 'margin-top': cssMargin,
- 'marker-offset': [cssLength, 'auto'],
- 'max-height': [cssLength, 'none'],
- 'max-width': [cssLength, 'none'],
- 'min-height': cssLength,
- 'min-width': cssLength,
- opacity: cssNumber,
- outline: [true, 'outline-color', 'outline-style', 'outline-width'],
- 'outline-color': ['invert', cssColor],
- 'outline-style': [
- 'dashed', 'dotted', 'double', 'groove', 'inset', 'none',
- 'outset', 'ridge', 'solid'
- ],
- 'outline-width': cssWidth,
- overflow: cssOverflow,
- 'overflow-x': cssOverflow,
- 'overflow-y': cssOverflow,
- padding: [4, cssLength],
- 'padding-bottom': cssLength,
- 'padding-left': cssLength,
- 'padding-right': cssLength,
- 'padding-top': cssLength,
- 'page-break-after': cssBreak,
- 'page-break-before': cssBreak,
- position: ['absolute', 'fixed', 'relative', 'static'],
- quotes: [8, cssString],
- right: [cssLength, 'auto'],
- 'table-layout': ['auto', 'fixed'],
- 'text-align': ['center', 'justify', 'left', 'right'],
- 'text-decoration': [
- 'none', 'underline', 'overline', 'line-through', 'blink'
- ],
- 'text-indent': cssLength,
- 'text-shadow': ['none', 4, [cssColor, cssLength]],
- 'text-transform': ['capitalize', 'uppercase', 'lowercase', 'none'],
- top: [cssLength, 'auto'],
- 'unicode-bidi': ['normal', 'embed', 'bidi-override'],
- 'vertical-align': [
- 'baseline', 'bottom', 'sub', 'super', 'top', 'text-top', 'middle',
- 'text-bottom', cssLength
- ],
- visibility: ['visible', 'hidden', 'collapse'],
- 'white-space': [
- 'normal', 'nowrap', 'pre', 'pre-line', 'pre-wrap', 'inherit'
- ],
- width: [cssLength, 'auto'],
- 'word-spacing': ['normal', cssLength],
- 'word-wrap': ['break-word', 'normal'],
- 'z-index': ['auto', cssNumber]
- };
-
- function styleAttribute() {
- var v;
- while (nexttoken.id === '*' || nexttoken.id === '#' ||
- nexttoken.value === '_') {
- if (!option.css) {
- warning("Unexpected '{a}'.", nexttoken, nexttoken.value);
- }
- advance();
- }
- if (nexttoken.id === '-') {
- if (!option.css) {
- warning("Unexpected '{a}'.", nexttoken, nexttoken.value);
- }
- advance('-');
- if (!nexttoken.identifier) {
- warning(
-"Expected a non-standard style attribute and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- advance();
- return cssAny;
- } else {
- if (!nexttoken.identifier) {
- warning("Excepted a style attribute, and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- } else {
- if (is_own(cssAttributeData, nexttoken.value)) {
- v = cssAttributeData[nexttoken.value];
- } else {
- v = cssAny;
- if (!option.css) {
- warning("Unrecognized style attribute '{a}'.",
- nexttoken, nexttoken.value);
- }
- }
- }
- advance();
- return v;
- }
- }
-
- function styleValue(v) {
- var i = 0,
- n,
- once,
- match,
- round,
- start = 0,
- vi;
- switch (typeof v) {
- case 'function':
- return v();
- case 'string':
- if (nexttoken.identifier && nexttoken.value === v) {
- advance();
- return true;
- }
- return false;
- }
- for (;;) {
- if (i >= v.length) {
- return false;
- }
- vi = v[i];
- i += 1;
- if (vi === true) {
- break;
- } else if (typeof vi === 'number') {
- n = vi;
- vi = v[i];
- i += 1;
- } else {
- n = 1;
- }
- match = false;
- while (n > 0) {
- if (styleValue(vi)) {
- match = true;
- n -= 1;
- } else {
- break;
- }
- }
- if (match) {
- return true;
- }
- }
- start = i;
- once = [];
- for (;;) {
- round = false;
- for (i = start; i < v.length; i += 1) {
- if (!once[i]) {
- if (styleValue(cssAttributeData[v[i]])) {
- match = true;
- round = true;
- once[i] = true;
- break;
- }
- }
- }
- if (!round) {
- return match;
- }
- }
- }
-
- function styleChild() {
- if (nexttoken.id === '(number)') {
- advance();
- if (nexttoken.value === 'n' && nexttoken.identifier) {
- adjacent();
- advance();
- if (nexttoken.id === '+') {
- adjacent();
- advance('+');
- adjacent();
- advance('(number)');
- }
- }
- return;
- } else {
- switch (nexttoken.value) {
- case 'odd':
- case 'even':
- if (nexttoken.identifier) {
- advance();
- return;
- }
- }
- }
- warning("Unexpected token '{a}'.", nexttoken, nexttoken.value);
- }
-
- function substyle() {
- var v;
- for (;;) {
- if (nexttoken.id === '}' || nexttoken.id === '(end)' ||
- xquote && nexttoken.id === xquote) {
- return;
- }
- while (nexttoken.id === ';') {
- warning("Misplaced ';'.");
- advance(';');
- }
- v = styleAttribute();
- advance(':');
- if (nexttoken.identifier && nexttoken.value === 'inherit') {
- advance();
- } else {
- if (!styleValue(v)) {
- warning("Unexpected token '{a}'.", nexttoken,
- nexttoken.value);
- advance();
- }
- }
- if (nexttoken.id === '!') {
- advance('!');
- adjacent();
- if (nexttoken.identifier && nexttoken.value === 'important') {
- advance();
- } else {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, 'important', nexttoken.value);
- }
- }
- if (nexttoken.id === '}' || nexttoken.id === xquote) {
- warning("Missing '{a}'.", nexttoken, ';');
- } else {
- advance(';');
- }
- }
- }
-
- function styleSelector() {
- if (nexttoken.identifier) {
- if (!is_own(htmltag, nexttoken.value)) {
- warning("Expected a tagName, and instead saw {a}.",
- nexttoken, nexttoken.value);
- }
- advance();
- } else {
- switch (nexttoken.id) {
- case '>':
- case '+':
- advance();
- styleSelector();
- break;
- case ':':
- advance(':');
- switch (nexttoken.value) {
- case 'active':
- case 'after':
- case 'before':
- case 'checked':
- case 'disabled':
- case 'empty':
- case 'enabled':
- case 'first-child':
- case 'first-letter':
- case 'first-line':
- case 'first-of-type':
- case 'focus':
- case 'hover':
- case 'last-of-type':
- case 'link':
- case 'only-of-type':
- case 'root':
- case 'target':
- case 'visited':
- advance();
- break;
- case 'lang':
- advance();
- advance('(');
- if (!nexttoken.identifier) {
- warning("Expected a lang code, and instead saw :{a}.",
- nexttoken, nexttoken.value);
- }
- advance(')');
- break;
- case 'nth-child':
- case 'nth-last-child':
- case 'nth-last-of-type':
- case 'nth-of-type':
- advance();
- advance('(');
- styleChild();
- advance(')');
- break;
- case 'not':
- advance();
- advance('(');
- if (nexttoken.id === ':' && peek(0).value === 'not') {
- warning("Nested not.");
- }
- styleSelector();
- advance(')');
- break;
- default:
- warning("Expected a pseudo, and instead saw :{a}.",
- nexttoken, nexttoken.value);
- }
- break;
- case '#':
- advance('#');
- if (!nexttoken.identifier) {
- warning("Expected an id, and instead saw #{a}.",
- nexttoken, nexttoken.value);
- }
- advance();
- break;
- case '*':
- advance('*');
- break;
- case '.':
- advance('.');
- if (!nexttoken.identifier) {
- warning("Expected a class, and instead saw #.{a}.",
- nexttoken, nexttoken.value);
- }
- advance();
- break;
- case '[':
- advance('[');
- if (!nexttoken.identifier) {
- warning("Expected an attribute, and instead saw [{a}].",
- nexttoken, nexttoken.value);
- }
- advance();
- if (nexttoken.id === '=' || nexttoken.value === '~=' ||
- nexttoken.value === '$=' ||
- nexttoken.value === '|=' ||
- nexttoken.id === '*=' ||
- nexttoken.id === '^=') {
- advance();
- if (nexttoken.type !== '(string)') {
- warning("Expected a string, and instead saw {a}.",
- nexttoken, nexttoken.value);
- }
- advance();
- }
- advance(']');
- break;
- default:
- error("Expected a CSS selector, and instead saw {a}.",
- nexttoken, nexttoken.value);
- }
- }
- }
-
- function stylePattern() {
- var name;
- if (nexttoken.id === '{') {
- warning("Expected a style pattern, and instead saw '{a}'.", nexttoken,
- nexttoken.id);
- } else if (nexttoken.id === '@') {
- advance('@');
- name = nexttoken.value;
- if (nexttoken.identifier && atrule[name] === true) {
- advance();
- return name;
- }
- warning("Expected an at-rule, and instead saw @{a}.", nexttoken, name);
- }
- for (;;) {
- styleSelector();
- if (nexttoken.id === '</' || nexttoken.id === '{' ||
- nexttoken.id === '(end)') {
- return '';
- }
- if (nexttoken.id === ',') {
- comma();
- }
- }
- }
-
- function styles() {
- var i;
- while (nexttoken.id === '@') {
- i = peek();
- if (i.identifier && i.value === 'import') {
- advance('@');
- advance();
- if (!cssUrl()) {
- warning("Expected '{a}' and instead saw '{b}'.", nexttoken,
- 'url', nexttoken.value);
- advance();
- }
- advance(';');
- } else {
- break;
- }
- }
- while (nexttoken.id !== '</' && nexttoken.id !== '(end)') {
- stylePattern();
- xmode = 'styleproperty';
- if (nexttoken.id === ';') {
- advance(';');
- } else {
- advance('{');
- substyle();
- xmode = 'style';
- advance('}');
- }
- }
- }
-
-
-// HTML parsing.
-
- function doBegin(n) {
- if (n !== 'html' && !option.fragment) {
- if (n === 'div' && option.adsafe) {
- error("ADSAFE: Use the fragment option.");
- } else {
- error("Expected '{a}' and instead saw '{b}'.",
- token, 'html', n);
- }
- }
- if (option.adsafe) {
- if (n === 'html') {
- error(
-"Currently, ADsafe does not operate on whole HTML documents. It operates on <div> fragments and .js files.", token);
- }
- if (option.fragment) {
- if (n !== 'div') {
- error("ADsafe violation: Wrap the widget in a div.", token);
- }
- } else {
- error("Use the fragment option.", token);
- }
- }
- option.browser = true;
- assume();
- }
-
- function doAttribute(n, a, v) {
- var u, x;
- if (a === 'id') {
- u = typeof v === 'string' ? v.toUpperCase() : '';
- if (ids[u] === true) {
- warning("Duplicate id='{a}'.", nexttoken, v);
- }
- if (!/^[A-Za-z][A-Za-z0-9._:\-]*$/.test(v)) {
- warning("Bad id: '{a}'.", nexttoken, v);
- } else if (option.adsafe) {
- if (adsafe_id) {
- if (v.slice(0, adsafe_id.length) !== adsafe_id) {
- warning("ADsafe violation: An id must have a '{a}' prefix",
- nexttoken, adsafe_id);
- } else if (!/^[A-Z]+_[A-Z]+$/.test(v)) {
- warning("ADSAFE violation: bad id.");
- }
- } else {
- adsafe_id = v;
- if (!/^[A-Z]+_$/.test(v)) {
- warning("ADSAFE violation: bad id.");
- }
- }
- }
- x = v.search(dx);
- if (x >= 0) {
- warning("Unexpected character '{a}' in {b}.", token, v.charAt(x), a);
- }
- ids[u] = true;
- } else if (a === 'class' || a === 'type' || a === 'name') {
- x = v.search(qx);
- if (x >= 0) {
- warning("Unexpected character '{a}' in {b}.", token, v.charAt(x), a);
- }
- ids[u] = true;
- } else if (a === 'href' || a === 'background' ||
- a === 'content' || a === 'data' ||
- a.indexOf('src') >= 0 || a.indexOf('url') >= 0) {
- if (option.safe && ux.test(v)) {
- error("ADsafe URL violation.");
- }
- urls.push(v);
- } else if (a === 'for') {
- if (option.adsafe) {
- if (adsafe_id) {
- if (v.slice(0, adsafe_id.length) !== adsafe_id) {
- warning("ADsafe violation: An id must have a '{a}' prefix",
- nexttoken, adsafe_id);
- } else if (!/^[A-Z]+_[A-Z]+$/.test(v)) {
- warning("ADSAFE violation: bad id.");
- }
- } else {
- warning("ADSAFE violation: bad id.");
- }
- }
- } else if (a === 'name') {
- if (option.adsafe && v.indexOf('_') >= 0) {
- warning("ADsafe name violation.");
- }
- }
- }
-
- function doTag(n, a) {
- var i, t = htmltag[n], x;
- src = false;
- if (!t) {
- error("Unrecognized tag '<{a}>'.",
- nexttoken,
- n === n.toLowerCase() ? n :
- n + ' (capitalization error)');
- }
- if (stack.length > 0) {
- if (n === 'html') {
- error("Too many <html> tags.", token);
- }
- x = t.parent;
- if (x) {
- if (x.indexOf(' ' + stack[stack.length - 1].name + ' ') < 0) {
- error("A '<{a}>' must be within '<{b}>'.",
- token, n, x);
- }
- } else if (!option.adsafe && !option.fragment) {
- i = stack.length;
- do {
- if (i <= 0) {
- error("A '<{a}>' must be within '<{b}>'.",
- token, n, 'body');
- }
- i -= 1;
- } while (stack[i].name !== 'body');
- }
- }
- switch (n) {
- case 'div':
- if (option.adsafe && stack.length === 1 && !adsafe_id) {
- warning("ADSAFE violation: missing ID_.");
- }
- break;
- case 'script':
- xmode = 'script';
- advance('>');
- indent = nexttoken.from;
- if (a.lang) {
- warning("lang is deprecated.", token);
- }
- if (option.adsafe && stack.length !== 1) {
- warning("ADsafe script placement violation.", token);
- }
- if (a.src) {
- if (option.adsafe && (!adsafe_may || !approved[a.src])) {
- warning("ADsafe unapproved script source.", token);
- }
- if (a.type) {
- warning("type is unnecessary.", token);
- }
- } else {
- if (adsafe_went) {
- error("ADsafe script violation.", token);
- }
- statements('script');
- }
- xmode = 'html';
- advance('</');
- if (!nexttoken.identifier && nexttoken.value !== 'script') {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, 'script', nexttoken.value);
- }
- advance();
- xmode = 'outer';
- break;
- case 'style':
- xmode = 'style';
- advance('>');
- styles();
- xmode = 'html';
- advance('</');
- if (!nexttoken.identifier && nexttoken.value !== 'style') {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, 'style', nexttoken.value);
- }
- advance();
- xmode = 'outer';
- break;
- case 'input':
- switch (a.type) {
- case 'radio':
- case 'checkbox':
- case 'button':
- case 'reset':
- case 'submit':
- break;
- case 'text':
- case 'file':
- case 'password':
- case 'file':
- case 'hidden':
- case 'image':
- if (option.adsafe && a.autocomplete !== 'off') {
- warning("ADsafe autocomplete violation.");
- }
- break;
- default:
- warning("Bad input type.");
- }
- break;
- case 'applet':
- case 'body':
- case 'embed':
- case 'frame':
- case 'frameset':
- case 'head':
- case 'iframe':
- case 'noembed':
- case 'noframes':
- case 'object':
- case 'param':
- if (option.adsafe) {
- warning("ADsafe violation: Disallowed tag: " + n);
- }
- break;
- }
- }
-
-
- function closetag(n) {
- return '</' + n + '>';
- }
-
- function html() {
- var a, attributes, e, n, q, t, v, w = option.white, wmode;
- xmode = 'html';
- xquote = '';
- stack = null;
- for (;;) {
- switch (nexttoken.value) {
- case '<':
- xmode = 'html';
- advance('<');
- attributes = {};
- t = nexttoken;
- if (!t.identifier) {
- warning("Bad identifier {a}.", t, t.value);
- }
- n = t.value;
- if (option.cap) {
- n = n.toLowerCase();
- }
- t.name = n;
- advance();
- if (!stack) {
- stack = [];
- doBegin(n);
- }
- v = htmltag[n];
- if (typeof v !== 'object') {
- error("Unrecognized tag '<{a}>'.", t, n);
- }
- e = v.empty;
- t.type = n;
- for (;;) {
- if (nexttoken.id === '/') {
- advance('/');
- if (nexttoken.id !== '>') {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, '>', nexttoken.value);
- }
- break;
- }
- if (nexttoken.id && nexttoken.id.substr(0, 1) === '>') {
- break;
- }
- if (!nexttoken.identifier) {
- if (nexttoken.id === '(end)' || nexttoken.id === '(error)') {
- error("Missing '>'.", nexttoken);
- }
- warning("Bad identifier.");
- }
- option.white = true;
- nonadjacent(token, nexttoken);
- a = nexttoken.value;
- option.white = w;
- advance();
- if (!option.cap && a !== a.toLowerCase()) {
- warning("Attribute '{a}' not all lower case.", nexttoken, a);
- }
- a = a.toLowerCase();
- xquote = '';
- if (is_own(attributes, a)) {
- warning("Attribute '{a}' repeated.", nexttoken, a);
- }
- if (a.slice(0, 2) === 'on') {
- if (!option.on) {
- warning("Avoid HTML event handlers.");
- }
- xmode = 'scriptstring';
- advance('=');
- q = nexttoken.id;
- if (q !== '"' && q !== "'") {
- error("Missing quote.");
- }
- xquote = q;
- wmode = option.white;
- option.white = false;
- advance(q);
- statements('on');
- option.white = wmode;
- if (nexttoken.id !== q) {
- error("Missing close quote on script attribute.");
- }
- xmode = 'html';
- xquote = '';
- advance(q);
- v = false;
- } else if (a === 'style') {
- xmode = 'scriptstring';
- advance('=');
- q = nexttoken.id;
- if (q !== '"' && q !== "'") {
- error("Missing quote.");
- }
- xmode = 'styleproperty';
- xquote = q;
- advance(q);
- substyle();
- xmode = 'html';
- xquote = '';
- advance(q);
- v = false;
- } else {
- if (nexttoken.id === '=') {
- advance('=');
- v = nexttoken.value;
- if (!nexttoken.identifier &&
- nexttoken.id !== '"' &&
- nexttoken.id !== '\'' &&
- nexttoken.type !== '(string)' &&
- nexttoken.type !== '(number)' &&
- nexttoken.type !== '(color)') {
- warning("Expected an attribute value and instead saw '{a}'.", token, a);
- }
- advance();
- } else {
- v = true;
- }
- }
- attributes[a] = v;
- doAttribute(n, a, v);
- }
- doTag(n, attributes);
- if (!e) {
- stack.push(t);
- }
- xmode = 'outer';
- advance('>');
- break;
- case '</':
- xmode = 'html';
- advance('</');
- if (!nexttoken.identifier) {
- warning("Bad identifier.");
- }
- n = nexttoken.value;
- if (option.cap) {
- n = n.toLowerCase();
- }
- advance();
- if (!stack) {
- error("Unexpected '{a}'.", nexttoken, closetag(n));
- }
- t = stack.pop();
- if (!t) {
- error("Unexpected '{a}'.", nexttoken, closetag(n));
- }
- if (t.name !== n) {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, closetag(t.name), closetag(n));
- }
- if (nexttoken.id !== '>') {
- error("Missing '{a}'.", nexttoken, '>');
- }
- xmode = 'outer';
- advance('>');
- break;
- case '<!':
- if (option.safe) {
- warning("ADsafe HTML violation.");
- }
- xmode = 'html';
- for (;;) {
- advance();
- if (nexttoken.id === '>' || nexttoken.id === '(end)') {
- break;
- }
- if (nexttoken.value.indexOf('--') >= 0) {
- warning("Unexpected --.");
- }
- if (nexttoken.value.indexOf('<') >= 0) {
- warning("Unexpected <.");
- }
- if (nexttoken.value.indexOf('>') >= 0) {
- warning("Unexpected >.");
- }
- }
- xmode = 'outer';
- advance('>');
- break;
- case '(end)':
- return;
- default:
- if (nexttoken.id === '(end)') {
- error("Missing '{a}'.", nexttoken,
- '</' + stack[stack.length - 1].value + '>');
- } else {
- advance();
- }
- }
- if (stack && stack.length === 0 && (option.adsafe ||
- !option.fragment || nexttoken.id === '(end)')) {
- break;
- }
- }
- if (nexttoken.id !== '(end)') {
- error("Unexpected material after the end.");
- }
- }
-
-
-// Build the syntax table by declaring the syntactic elements of the language.
-
- type('(number)', idValue);
- type('(string)', idValue);
-
- syntax['(identifier)'] = {
- type: '(identifier)',
- lbp: 0,
- identifier: true,
- nud: function () {
- var v = this.value,
- s = scope[v],
- f;
- if (typeof s === 'function') {
- 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 'label':
- warning("'{a}' is a statement label.", token, v);
- break;
- }
-
-// The name is not defined in the function. If we are in the global scope,
-// then we have an undefined variable.
-
- } else if (funct['(global)']) {
- if (option.undef && predefined[v] !== 'boolean') {
- warning("'{a}' is not defined.", token, v);
- }
- note_implied(token);
-
-// If the name is already defined in the current
-// function, but not as outer, then there is a scope error.
-
- } else {
- switch (funct[v]) {
- case 'closure':
- case 'function':
- case 'var':
- case 'unused':
- warning("'{a}' used out of scope.", token, v);
- break;
- case 'label':
- warning("'{a}' is a statement label.", token, v);
- break;
- case 'outer':
- case 'global':
- break;
- default:
-
-// If the name is defined in an outer function, make an outer entry, and if
-// it was unused, make it var.
-
- if (s === true) {
- funct[v] = true;
- } else if (s === null) {
- warning("'{a}' is not allowed.", token, v);
- note_implied(token);
- } else if (typeof s !== 'object') {
- if (option.undef) {
- warning("'{a}' is not defined.", token, v);
- } else {
- funct[v] = true;
- }
- note_implied(token);
- } else {
- switch (s[v]) {
- case 'function':
- case 'var':
- case 'unused':
- s[v] = 'closure';
- funct[v] = s['(global)'] ? 'global' : 'outer';
- break;
- case 'closure':
- case 'parameter':
- funct[v] = s['(global)'] ? 'global' : 'outer';
- break;
- case 'label':
- warning("'{a}' is a statement label.", token, v);
- }
- }
- }
- }
- return this;
- },
- led: function () {
- error("Expected an operator and instead saw '{a}'.",
- nexttoken, nexttoken.value);
- }
- };
-
- type('(regexp)', function () {
- return this;
- });
-
- 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');
- reservevar('eval');
- reservevar('false');
- reservevar('Infinity');
- reservevar('NaN');
- reservevar('null');
- reservevar('this');
- 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 = parse(10);
- advance(':');
- that['else'] = parse(10);
- return that;
- }, 30);
-
- infix('||', 'or', 40);
- infix('&&', 'and', 50);
- bitwise('|', 'bitor', 70);
- bitwise('^', 'bitxor', 80);
- bitwise('&', 'bitand', 90);
- relation('==', function (left, right) {
- if (option.eqeqeq) {
- warning("Expected '{a}' and instead saw '{b}'.",
- this, '===', '==');
- } else if (isPoorRelation(left)) {
- warning("Use '{a}' to compare with '{b}'.",
- this, '===', left.value);
- } else if (isPoorRelation(right)) {
- warning("Use '{a}' to compare with '{b}'.",
- this, '===', right.value);
- }
- return this;
- });
- relation('===');
- relation('!=', function (left, right) {
- if (option.eqeqeq) {
- warning("Expected '{a}' and instead saw '{b}'.",
- this, '!==', '!=');
- } else if (isPoorRelation(left)) {
- warning("Use '{a}' to compare with '{b}'.",
- this, '!==', left.value);
- } else if (isPoorRelation(right)) {
- warning("Use '{a}' to compare with '{b}'.",
- this, '!==', right.value);
- }
- return this;
- });
- relation('!==');
- relation('<');
- relation('>');
- relation('<=');
- relation('>=');
- bitwise('<<', 'shiftleft', 120);
- bitwise('>>', 'shiftright', 120);
- bitwise('>>>', 'shiftrightunsigned', 120);
- infix('in', 'in', 120);
- infix('instanceof', 'instanceof', 120);
- infix('+', function (left, that) {
- var right = parse(130);
- if (left && right && left.id === '(string)' && right.id === '(string)') {
- left.value += right.value;
- left.character = right.character;
- if (jx.test(left.value)) {
- warning("JavaScript URL.", left);
- }
- return left;
- }
- that.left = left;
- that.right = right;
- return that;
- }, 130);
- prefix('+', 'num');
- infix('-', 'sub', 130);
- prefix('-', 'neg');
- 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 = parse(0);
- if (!p || (p.id !== '.' && p.id !== '[')) {
- warning("Expected '{a}' and instead saw '{b}'.",
- nexttoken, '.', nexttoken.value);
- }
- this.first = p;
- return this;
- }).exps = true;
-
-
- prefix('~', function () {
- if (option.bitwise) {
- warning("Unexpected '{a}'.", this, '~');
- }
- parse(150);
- return this;
- });
- prefix('!', function () {
- this.right = parse(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 = parse(155), i;
- if (c && c.id !== 'function') {
- if (c.identifier) {
- c['new'] = true;
- switch (c.value) {
- case 'Object':
- warning("Use the object literal notation {}.", token);
- break;
- case 'Array':
- if (nexttoken.id !== '(') {
- warning("Use the array literal notation [].", token);
- } else {
- advance('(');
- if (nexttoken.id === ')') {
- warning("Use the array literal notation [].", token);
- } else {
- i = parse(0);
- c.dimension = i;
- if ((i.id === '(number)' && /[.+\-Ee]/.test(i.value)) ||
- (i.id === '-' && !i.right) ||
- i.id === '(string)' || i.id === '[' ||
- i.id === '{' || i.id === 'true' ||
- i.id === 'false' ||
- i.id === 'null' || i.id === 'undefined' ||
- i.id === 'Infinity') {
- warning("Use the array literal notation [].", token);
- }
- if (nexttoken.id !== ')') {
- error("Use the array literal notation [].", token);
- }
- }
- advance(')');
- }
- this.first = c;
- return this;
- case 'Number':
- case 'String':
- case 'Boolean':
- case 'Math':
- case 'JSON':
- warning("Do not use {a} as a constructor.", token, c.value);
- break;
- case 'Function':
- if (!option.evil) {
- warning("The Function constructor is eval.");
- }
- break;
- case 'Date':
- case 'RegExp':
- break;
- default:
- if (c.id !== 'function') {
- i = c.value.substr(0, 1);
- if (option.newcap && (i < 'A' || i > 'Z')) {
- warning(
- "A constructor name should start with an uppercase letter.",
- token);
- }
- }
- }
- } else {
- if (c.id !== '.' && c.id !== '[' && c.id !== '(') {
- warning("Bad constructor.", token);
- }
- }
- } else {
- warning("Weird construction. Delete 'new'.", this);
- }
- adjacent(token, nexttoken);
- if (nexttoken.id !== '(') {
- warning("Missing '()' invoking a constructor.");
- }
- this.first = c;
- return this;
- });
- syntax['new'].exps = true;
-
- infix('.', function (left, that) {
- adjacent(prevtoken, token);
- var m = identifier();
- if (typeof m === 'string') {
- countMember(m);
- }
- that.left = left;
- that.right = m;
- if (!option.evil && left && left.value === 'document' &&
- (m === 'write' || m === 'writeln')) {
- warning("document.write can be a form of eval.", left);
- } else if (option.adsafe) {
- if (left && left.value === 'ADSAFE') {
- if (m === 'id' || m === 'lib') {
- warning("ADsafe violation.", that);
- } else if (m === 'go') {
- if (xmode !== 'script') {
- warning("ADsafe violation.", that);
- } else if (adsafe_went || nexttoken.id !== '(' ||
- peek(0).id !== '(string)' ||
- peek(0).value !== adsafe_id ||
- peek(1).id !== ',') {
- error("ADsafe violation: go.", that);
- }
- adsafe_went = true;
- adsafe_may = false;
- }
- }
- }
- if (!option.evil && (m === 'eval' || m === 'execScript')) {
- warning('eval is evil.');
- } else if (option.safe) {
- for (;;) {
- if (banned[m] === true) {
- warning("ADsafe restricted word '{a}'.", token, m);
- }
- if (typeof predefined[left.value] !== 'boolean' ||
- nexttoken.id === '(') {
- break;
- }
- if (standard_member[m] === true) {
- if (nexttoken.id === '.') {
- warning("ADsafe violation.", that);
- }
- break;
- }
- if (nexttoken.id !== '.') {
- warning("ADsafe violation.", that);
- break;
- }
- advance('.');
- token.left = that;
- token.right = m;
- that = token;
- m = identifier();
- if (typeof m === 'string') {
- countMember(m);
- }
- }
- }
- return that;
- }, 160, true);
-
- infix('(', function (left, that) {
- adjacent(prevtoken, token);
- nospace();
- var n = 0,
- p = [];
- if (left) {
- if (left.type === '(identifier)') {
- if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) {
- if (left.value !== 'Number' && left.value !== 'String' &&
- left.value !== 'Boolean' &&
- left.value !== 'Date') {
- if (left.value === 'Math') {
- warning("Math is not a function.", left);
- } else if (option.newcap) {
- warning(
-"Missing 'new' prefix when invoking a constructor.", left);
- }
- }
- }
- } else if (left.id === '.') {
- if (option.safe && left.left.value === 'Math' &&
- left.right === 'random') {
- warning("ADsafe violation.", left);
- }
- }
- }
- if (nexttoken.id !== ')') {
- for (;;) {
- p[p.length] = parse(10);
- n += 1;
- if (nexttoken.id !== ',') {
- break;
- }
- comma();
- }
- }
- advance(')');
- if (option.immed && left.id === 'function' && nexttoken.id !== ')') {
- warning("Wrap the entire immediate function invocation in parens.",
- that);
- }
- nospace(prevtoken, token);
- if (typeof left === 'object') {
- if (left.value === 'parseInt' && n === 1) {
- warning("Missing radix parameter.", left);
- }
- if (!option.evil) {
- if (left.value === 'eval' || left.value === 'Function' ||
- left.value === 'execScript') {
- warning("eval is evil.", left);
- } else if (p[0] && p[0].id === '(string)' &&
- (left.value === 'setTimeout' ||
- left.value === 'setInterval')) {
- warning(
- "Implied eval is evil. Pass a function instead of a string.", left);
- }
- }
- if (!left.identifier && left.id !== '.' && left.id !== '[' &&
- left.id !== '(' && left.id !== '&&' && left.id !== '||' &&
- left.id !== '?') {
- warning("Bad invocation.", left);
- }
- }
- that.left = left;
- return that;
- }, 155, true).exps = true;
-
- prefix('(', function () {
- nospace();
- var v = parse(0);
- advance(')', this);
- nospace(prevtoken, token);
- if (option.immed && v.id === 'function') {
- if (nexttoken.id === '(') {
- warning(
-"Move the invocation into the parens that contain the function.", nexttoken);
- } else {
- warning(
-"Do not wrap function literals in parens unless they are to be immediately invoked.",
- this);
- }
- }
- return v;
- });
-
- infix('[', function (left, that) {
- nospace();
- var e = parse(0), s;
- if (e && e.type === '(string)') {
- if (option.safe && banned[e.value] === true) {
- warning("ADsafe restricted word '{a}'.", that, e.value);
- } else if (!option.evil &&
- (e.value === 'eval' || e.value === 'execScript')) {
- warning("eval is evil.", that);
- } else if (option.safe &&
- (e.value.charAt(0) === '_' || e.value.charAt(0) === '-')) {
- warning("ADsafe restricted subscript '{a}'.", that, e.value);
- }
- countMember(e.value);
- if (!option.sub && ix.test(e.value)) {
- s = syntax[e.value];
- if (!s || !s.reserved) {
- warning("['{a}'] is better written in dot notation.",
- e, e.value);
- }
- }
- } else if (!e || e.type !== '(number)' || e.value < 0) {
- if (option.safe) {
- warning('ADsafe subscripting.');
- }
- }
- advance(']', that);
- nospace(prevtoken, token);
- that.left = left;
- that.right = e;
- return that;
- }, 160, true);
-
- prefix('[', function () {
- var b = token.line !== nexttoken.line;
- this.first = [];
- if (b) {
- indent += option.indent;
- if (nexttoken.from === indent + option.indent) {
- indent += option.indent;
- }
- }
- while (nexttoken.id !== '(end)') {
- while (nexttoken.id === ',') {
- warning("Extra comma.");
- advance(',');
- }
- if (nexttoken.id === ']') {
- break;
- }
- if (b && token.line !== nexttoken.line) {
- indentation();
- }
- this.first.push(parse(10));
- if (nexttoken.id === ',') {
- comma();
- if (nexttoken.id === ']') {
- warning("Extra comma.", token);
- break;
- }
- } else {
- break;
- }
- }
- if (b) {
- indent -= option.indent;
- indentation();
- }
- advance(']', this);
- return this;
- }, 160);
-
- (function (x) {
- x.nud = function () {
- var b, i, s, seen = {};
- 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();
- }
- i = optionalidentifier(true);
- if (!i) {
- if (nexttoken.id === '(string)') {
- i = nexttoken.value;
- if (ix.test(i)) {
- s = syntax[i];
- }
- advance();
- } else if (nexttoken.id === '(number)') {
- i = nexttoken.value.toString();
- advance();
- } else {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, '}', nexttoken.value);
- }
- }
- if (seen[i] === true) {
- warning("Duplicate member '{a}'.", nexttoken, i);
- }
- seen[i] = true;
- countMember(i);
- advance(':');
- nonadjacent(token, nexttoken);
- parse(10);
- if (nexttoken.id === ',') {
- comma();
- if (nexttoken.id === ',' || nexttoken.id === '}') {
- warning("Extra comma.", token);
- }
- } else {
- break;
- }
- }
- if (b) {
- indent -= option.indent;
- indentation();
- }
- advance('}', this);
- return this;
- };
- x.fud = function () {
- error("Expected to see a statement and instead saw a block.", token);
- };
- }(delim('{')));
-
-
- function varstatement(prefix) {
-
-// JavaScript does not have block scope. It only has function scope. So,
-// declaring a variable in a block can have unexpected consequences.
-
- var id, name, value;
-
- if (funct['(onevar)'] && option.onevar) {
- warning("Too many var statements.");
- } else if (!funct['(global)']) {
- funct['(onevar)'] = true;
- }
- this.first = [];
- for (;;) {
- nonadjacent(token, nexttoken);
- id = identifier();
- if (funct['(global)'] && predefined[id] === false) {
- warning("Redefinition of '{a}'.", token, id);
- }
- addlabel(id, 'unused');
- if (prefix) {
- break;
- }
- name = token;
- this.first.push(token);
- if (nexttoken.id === '=') {
- nonadjacent(token, nexttoken);
- advance('=');
- nonadjacent(token, nexttoken);
- if (nexttoken.id === 'undefined') {
- warning("It is not necessary to initialize '{a}' to 'undefined'.", token, id);
- }
- if (peek(0).id === '=' && nexttoken.identifier) {
- error("Variable {a} was not declared correctly.",
- nexttoken, nexttoken.value);
- }
- value = parse(0);
- name.first = value;
- }
- if (nexttoken.id !== ',') {
- break;
- }
- comma();
- }
- return this;
- }
-
-
- stmt('var', varstatement).exps = true;
-
-
- function functionparams() {
- var i, t = nexttoken, p = [];
- advance('(');
- nospace();
- if (nexttoken.id === ')') {
- advance(')');
- nospace(prevtoken, token);
- return;
- }
- for (;;) {
- i = identifier();
- p.push(i);
- addlabel(i, 'parameter');
- if (nexttoken.id === ',') {
- comma();
- } else {
- advance(')', t);
- nospace(prevtoken, token);
- return p;
- }
- }
- }
-
- function doFunction(i) {
- var s = scope;
- scope = Object.create(s);
- funct = {
- '(name)' : i || '"' + anonname + '"',
- '(line)' : nexttoken.line,
- '(context)' : funct,
- '(breakage)': 0,
- '(loopage)' : 0,
- '(scope)' : scope
- };
- token.funct = funct;
- functions.push(funct);
- if (i) {
- addlabel(i, 'function');
- }
- funct['(params)'] = functionparams();
-
- block(false);
- scope = s;
- funct['(last)'] = token.line;
- funct = funct['(context)'];
- }
-
-
- blockstmt('function', function () {
- if (inblock) {
- warning(
-"Function statements cannot be placed in blocks. Use a function expression or move the statement to the top of the outer function.", token);
-
- }
- var i = identifier();
- adjacent(token, nexttoken);
- addlabel(i, 'unused');
- doFunction(i);
- if (nexttoken.id === '(' && nexttoken.line === token.line) {
- error(
-"Function statements 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 (funct['(loopage)']) {
- warning("Don't make functions within a loop.");
- }
- return this;
- });
-
- blockstmt('if', function () {
- var t = nexttoken;
- advance('(');
- nonadjacent(this, t);
- nospace();
- parse(20);
- if (nexttoken.id === '=') {
- warning("Expected a conditional expression and instead saw an assignment.");
- advance('=');
- parse(20);
- }
- advance(')', t);
- nospace(prevtoken, token);
- block(true);
- if (nexttoken.id === 'else') {
- nonadjacent(token, nexttoken);
- advance('else');
- if (nexttoken.id === 'if' || nexttoken.id === 'switch') {
- statement(true);
- } else {
- block(true);
- }
- }
- return this;
- });
-
- blockstmt('try', function () {
- var b, e, s;
- if (option.adsafe) {
- warning("ADsafe try violation.", this);
- }
- block(false);
- if (nexttoken.id === 'catch') {
- advance('catch');
- nonadjacent(token, nexttoken);
- advance('(');
- s = scope;
- scope = Object.create(s);
- e = nexttoken.value;
- if (nexttoken.type !== '(identifier)') {
- warning("Expected an identifier and instead saw '{a}'.",
- nexttoken, e);
- } else {
- addlabel(e, 'exception');
- }
- advance();
- advance(')');
- block(false);
- b = true;
- scope = s;
- }
- if (nexttoken.id === 'finally') {
- advance('finally');
- block(false);
- return;
- } else if (!b) {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, 'catch', nexttoken.value);
- }
- return this;
- });
-
- blockstmt('while', function () {
- var t = nexttoken;
- funct['(breakage)'] += 1;
- funct['(loopage)'] += 1;
- advance('(');
- nonadjacent(this, t);
- nospace();
- parse(20);
- if (nexttoken.id === '=') {
- warning("Expected a conditional expression and instead saw an assignment.");
- advance('=');
- parse(20);
- }
- advance(')', t);
- nospace(prevtoken, token);
- block(true);
- funct['(breakage)'] -= 1;
- funct['(loopage)'] -= 1;
- return this;
- }).labelled = true;
-
- reserve('with');
-
- blockstmt('switch', function () {
- var t = nexttoken,
- g = false;
- funct['(breakage)'] += 1;
- advance('(');
- nonadjacent(this, t);
- nospace();
- this.condition = parse(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:
- warning(
- "Expected a 'break' statement before 'case'.",
- token);
- }
- indentation(-option.indent);
- advance('case');
- this.cases.push(parse(20));
- g = true;
- advance(':');
- funct['(verb)'] = 'case';
- break;
- case 'default':
- switch (funct['(verb)']) {
- case 'break':
- case 'continue':
- case 'return':
- case 'throw':
- break;
- default:
- warning(
- "Expected a 'break' statement before 'default'.",
- token);
- }
- indentation(-option.indent);
- advance('default');
- g = true;
- advance(':');
- break;
- case '}':
- indent -= option.indent;
- indentation();
- advance('}', t);
- if (this.cases.length === 1 || this.condition.id === 'true' ||
- this.condition.id === 'false') {
- warning("This 'switch' should be an 'if'.", this);
- }
- funct['(breakage)'] -= 1;
- funct['(verb)'] = undefined;
- return;
- case '(end)':
- error("Missing '{a}'.", nexttoken, '}');
- return;
- default:
- if (g) {
- switch (token.id) {
- case ',':
- error("Each value should have its own case label.");
- return;
- case ':':
- statements();
- break;
- default:
- error("Missing ':' on a case clause.", token);
- }
- } else {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, 'case', nexttoken.value);
- }
- }
- }
- }).labelled = true;
-
- stmt('debugger', function () {
- if (!option.debug) {
- warning("All 'debugger' statements should be removed.");
- }
- return this;
- }).exps = true;
-
- (function () {
- var x = stmt('do', function () {
- funct['(breakage)'] += 1;
- funct['(loopage)'] += 1;
- this.first = block(true);
- advance('while');
- var t = nexttoken;
- nonadjacent(token, t);
- advance('(');
- nospace();
- parse(20);
- if (nexttoken.id === '=') {
- warning("Expected a conditional expression and instead saw an assignment.");
- advance('=');
- parse(20);
- }
- advance(')', t);
- nospace(prevtoken, token);
- funct['(breakage)'] -= 1;
- funct['(loopage)'] -= 1;
- return this;
- });
- x.labelled = true;
- x.exps = true;
- }());
-
- blockstmt('for', function () {
- var f = option.forin, s, t = nexttoken;
- funct['(breakage)'] += 1;
- funct['(loopage)'] += 1;
- advance('(');
- nonadjacent(this, t);
- nospace();
- if (peek(nexttoken.id === 'var' ? 1 : 0).id === 'in') {
- if (nexttoken.id === 'var') {
- advance('var');
- varstatement(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');
- parse(20);
- advance(')', t);
- s = block(true);
- if (!f && (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();
- } else {
- for (;;) {
- parse(0, 'for');
- if (nexttoken.id !== ',') {
- break;
- }
- comma();
- }
- }
- }
- nolinebreak(token);
- advance(';');
- if (nexttoken.id !== ';') {
- parse(20);
- if (nexttoken.id === '=') {
- warning("Expected a conditional expression and instead saw an assignment.");
- advance('=');
- parse(20);
- }
- }
- nolinebreak(token);
- advance(';');
- if (nexttoken.id === ';') {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, ')', ';');
- }
- if (nexttoken.id !== ')') {
- for (;;) {
- parse(0, 'for');
- if (nexttoken.id !== ',') {
- break;
- }
- comma();
- }
- }
- advance(')', t);
- nospace(prevtoken, token);
- block(true);
- funct['(breakage)'] -= 1;
- funct['(loopage)'] -= 1;
- return this;
- }
- }).labelled = true;
-
-
- stmt('break', function () {
- var v = nexttoken.value;
- if (funct['(breakage)'] === 0) {
- warning("Unexpected '{a}'.", nexttoken, this.value);
- }
- nolinebreak(this);
- if (nexttoken.id !== ';') {
- if (token.line === nexttoken.line) {
- if (funct[v] !== 'label') {
- warning("'{a}' is not a statement label.", nexttoken, v);
- } else if (scope[v] !== funct) {
- warning("'{a}' is out of scope.", nexttoken, v);
- }
- this.first = nexttoken;
- advance();
- }
- }
- reachable('break');
- return this;
- }).exps = true;
-
-
- stmt('continue', function () {
- var v = nexttoken.value;
- if (funct['(breakage)'] === 0) {
- warning("Unexpected '{a}'.", nexttoken, this.value);
- }
- nolinebreak(this);
- if (nexttoken.id !== ';') {
- if (token.line === nexttoken.line) {
- if (funct[v] !== 'label') {
- warning("'{a}' is not a statement label.", nexttoken, v);
- } else if (scope[v] !== funct) {
- warning("'{a}' is out of scope.", nexttoken, v);
- }
- this.first = nexttoken;
- advance();
- }
- } else if (!funct['(loopage)']) {
- warning("Unexpected '{a}'.", nexttoken, this.value);
- }
- reachable('continue');
- return this;
- }).exps = true;
-
-
- stmt('return', function () {
- nolinebreak(this);
- if (nexttoken.id === '(regexp)') {
- warning("Wrap the /regexp/ literal in parens to disambiguate the slash operator.");
- }
- if (nexttoken.id !== ';' && !nexttoken.reach) {
- nonadjacent(token, nexttoken);
- this.first = parse(20);
- }
- reachable('return');
- return this;
- }).exps = true;
-
-
- stmt('throw', function () {
- nolinebreak(this);
- nonadjacent(token, nexttoken);
- this.first = parse(20);
- reachable('throw');
- return this;
- }).exps = true;
-
- reserve('void');
-
-// 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');
-
- function jsonValue() {
-
- function jsonObject() {
- var o = {}, t = nexttoken;
- advance('{');
- if (nexttoken.id !== '}') {
- for (;;) {
- if (nexttoken.id === '(end)') {
- error("Missing '}' to match '{' from line {a}.",
- nexttoken, t.line);
- } else if (nexttoken.id === '}') {
- warning("Unexpected comma.", token);
- break;
- } else if (nexttoken.id === ',') {
- error("Unexpected comma.", nexttoken);
- } else if (nexttoken.id !== '(string)') {
- warning("Expected a string and instead saw {a}.",
- nexttoken, nexttoken.value);
- }
- if (o[nexttoken.value] === true) {
- warning("Duplicate key '{a}'.",
- nexttoken, nexttoken.value);
- } else if (nexttoken.value === '__proto__') {
- warning("Stupid key '{a}'.",
- nexttoken, nexttoken.value);
- } else {
- o[nexttoken.value] = true;
- }
- advance();
- advance(':');
- jsonValue();
- if (nexttoken.id !== ',') {
- break;
- }
- advance(',');
- }
- }
- advance('}');
- }
-
- function jsonArray() {
- var t = nexttoken;
- advance('[');
- if (nexttoken.id !== ']') {
- for (;;) {
- if (nexttoken.id === '(end)') {
- error("Missing ']' to match '[' from line {a}.",
- nexttoken, t.line);
- } else if (nexttoken.id === ']') {
- warning("Unexpected comma.", token);
- break;
- } else if (nexttoken.id === ',') {
- error("Unexpected comma.", nexttoken);
- }
- jsonValue();
- if (nexttoken.id !== ',') {
- break;
- }
- advance(',');
- }
- }
- advance(']');
- }
-
- switch (nexttoken.id) {
- case '{':
- jsonObject();
- break;
- case '[':
- jsonArray();
- break;
- case 'true':
- case 'false':
- case 'null':
- case '(number)':
- case '(string)':
- advance();
- break;
- case '-':
- advance('-');
- if (token.character !== nexttoken.from) {
- warning("Unexpected space after '-'.", token);
- }
- adjacent(token, nexttoken);
- advance('(number)');
- break;
- default:
- error("Expected a JSON value.", nexttoken);
- }
- }
-
-
-// The actual JSLINT function itself.
-
- var itself = function (s, o) {
- var a, i;
- JSLINT.errors = [];
- predefined = Object.create(standard);
- if (o) {
- a = o.predef;
- if (a instanceof Array) {
- for (i = 0; i < a.length; i += 1) {
- predefined[a[i]] = true;
- }
- }
- if (o.adsafe) {
- o.safe = true;
- }
- if (o.safe) {
- o.browser = false;
- o.css = false;
- o.debug = false;
- o.devel = false;
- o.eqeqeq = true;
- o.evil = false;
- o.forin = false;
- o.nomen = true;
- o.on = false;
- o.rhino = false;
- o.safe = true;
- o.sidebar = false;
- o.strict = true;
- o.sub = false;
- o.undef = true;
- o.widget = false;
- predefined.Date = null;
- predefined['eval'] = null;
- predefined.Function = null;
- predefined.Object = null;
- predefined.ADSAFE = false;
- predefined.lib = false;
- }
- option = o;
- } else {
- option = {};
- }
- option.indent = option.indent || 4;
- option.maxerr = option.maxerr || 50;
- adsafe_id = '';
- adsafe_may = false;
- adsafe_went = false;
- approved = {};
- if (option.approved) {
- for (i = 0; i < option.approved.length; i += 1) {
- approved[option.approved[i]] = option.approved[i];
- }
- } else {
- approved.test = 'test';
- }
- tab = '';
- for (i = 0; i < option.indent; i += 1) {
- tab += ' ';
- }
- indent = 1;
- global = Object.create(predefined);
- scope = global;
- funct = {
- '(global)': true,
- '(name)': '(global)',
- '(scope)': scope,
- '(breakage)': 0,
- '(loopage)': 0
- };
- functions = [funct];
- ids = {};
- urls = [];
- src = false;
- xmode = false;
- stack = null;
- member = {};
- membersOnly = null;
- implied = {};
- inblock = false;
- lookahead = [];
- jsonmode = false;
- warnings = 0;
- lex.init(s);
- prereg = true;
- strict_mode = false;
-
- prevtoken = token = nexttoken = syntax['(begin)'];
- assume();
-
- try {
- advance();
- if (nexttoken.value.charAt(0) === '<') {
- html();
- if (option.adsafe && !adsafe_went) {
- warning("ADsafe violation: Missing ADSAFE.go.", this);
- }
- } else {
- switch (nexttoken.id) {
- case '{':
- case '[':
- option.laxbreak = true;
- jsonmode = true;
- jsonValue();
- break;
- case '@':
- case '*':
- case '#':
- case '.':
- case ':':
- xmode = 'style';
- advance();
- if (token.id !== '@' || !nexttoken.identifier ||
- nexttoken.value !== 'charset' || token.line !== 1 ||
- token.from !== 1) {
- error('A css file should begin with @charset "UTF-8";');
- }
- advance();
- if (nexttoken.type !== '(string)' &&
- nexttoken.value !== 'UTF-8') {
- error('A css file should begin with @charset "UTF-8";');
- }
- advance();
- advance(';');
- styles();
- break;
-
- default:
- if (option.adsafe && option.fragment) {
- error("Expected '{a}' and instead saw '{b}'.",
- nexttoken, '<div>', nexttoken.value);
- }
- statements('lib');
- }
- }
- advance('(end)');
- } catch (e) {
- if (e) {
- JSLINT.errors.push({
- reason : e.message,
- line : e.line || nexttoken.line,
- character : e.character || nexttoken.from
- }, null);
- }
- }
- return JSLINT.errors.length === 0;
- };
-
- function is_array(o) {
- return Object.prototype.toString.apply(o) === '[object Array]';
- }
-
- function to_array(o) {
- var a = [], k;
- for (k in o) {
- if (is_own(o, k)) {
- a.push(k);
- }
- }
- return a;
- }
-
-// Data summary.
-
- itself.data = function () {
-
- var data = {functions: []}, fu, globals, implieds = [], f, i, j,
- members = [], n, unused = [], v;
- if (itself.errors.length) {
- data.errors = itself.errors;
- }
-
- if (jsonmode) {
- data.json = true;
- }
-
- for (n in implied) {
- if (is_own(implied, n)) {
- implieds.push({
- name: n,
- line: implied[n]
- });
- }
- }
- if (implieds.length > 0) {
- data.implieds = implieds;
- }
-
- if (urls.length > 0) {
- data.urls = urls;
- }
-
- globals = to_array(scope);
- if (globals.length > 0) {
- data.globals = globals;
- }
-
- for (i = 1; i < functions.length; i += 1) {
- f = functions[i];
- fu = {};
- for (j = 0; j < functionicity.length; j += 1) {
- fu[functionicity[j]] = [];
- }
- for (n in f) {
- if (is_own(f, n) && n.charAt(0) !== '(') {
- v = f[n];
- if (is_array(fu[v])) {
- fu[v].push(n);
- if (v === 'unused') {
- unused.push({
- name: n,
- line: f['(line)'],
- 'function': f['(name)']
- });
- }
- }
- }
- }
- for (j = 0; j < functionicity.length; j += 1) {
- if (fu[functionicity[j]].length === 0) {
- delete fu[functionicity[j]];
- }
- }
- fu.name = f['(name)'];
- fu.param = f['(params)'];
- fu.line = f['(line)'];
- fu.last = f['(last)'];
- data.functions.push(fu);
- }
-
- if (unused.length > 0) {
- data.unused = unused;
- }
-
- members = [];
- for (n in member) {
- if (typeof member[n] === 'number') {
- data.member = member;
- break;
- }
- }
-
- return data;
- };
-
- itself.report = function (option) {
- var data = itself.data();
-
- var a = [], c, e, err, f, i, k, l, m = '', n, o = [], s;
-
- function detail(h, array) {
- var b, i, singularity;
- if (array) {
- o.push('<div><i>' + h + '</i> ');
- array = array.sort();
- for (i = 0; i < array.length; i += 1) {
- if (array[i] !== singularity) {
- singularity = array[i];
- o.push((b ? ', ' : '') + singularity);
- b = true;
- }
- }
- o.push('</div>');
- }
- }
-
-
- if (data.errors || data.implieds || data.unused) {
- err = true;
- o.push('<div id=errors><i>Error:</i>');
- if (data.errors) {
- for (i = 0; i < data.errors.length; i += 1) {
- c = data.errors[i];
- if (c) {
- e = c.evidence || '';
- o.push('<p>Problem' + (isFinite(c.line) ? ' at line ' +
- c.line + ' character ' + c.character : '') +
- ': ' + c.reason.entityify() +
- '</p><p class=evidence>' +
- (e && (e.length > 80 ? e.slice(0, 77) + '...' :
- e).entityify()) + '</p>');
- }
- }
- }
-
- if (data.implieds) {
- s = [];
- for (i = 0; i < data.implieds.length; i += 1) {
- s[i] = '<code>' + data.implieds[i].name + '</code> <i>' +
- data.implieds[i].line + '</i>';
- }
- o.push('<p><i>Implied global:</i> ' + s.join(', ') + '</p>');
- }
-
- if (data.unused) {
- s = [];
- for (i = 0; i < data.unused.length; i += 1) {
- s[i] = '<code><u>' + data.unused[i].name + '</u></code> <i>' +
- data.unused[i].line + '</i> <code>' +
- data.unused[i]['function'] + '</code>';
- }
- o.push('<p><i>Unused variable:</i> ' + s.join(', ') + '</p>');
- }
- if (data.json) {
- o.push('<p>JSON: bad.</p>');
- }
- o.push('</div>');
- }
-
- if (!option) {
-
- o.push('<br><div id=functions>');
-
- if (data.urls) {
- detail("URLs<br>", data.urls, '<br>');
- }
-
- if (xmode === 'style') {
- o.push('<p>CSS.</p>');
- } else if (data.json && !err) {
- o.push('<p>JSON: good.</p>');
- } else if (data.globals) {
- o.push('<div><i>Global</i> ' +
- data.globals.sort().join(', ') + '</div>');
- } else {
- o.push('<div><i>No new global variables introduced.</i></div>');
- }
-
- for (i = 0; i < data.functions.length; i += 1) {
- f = data.functions[i];
-
- o.push('<br><div class=function><i>' + f.line + '-' +
- f.last + '</i> ' + (f.name || '') + '(' +
- (f.param ? f.param.join(', ') : '') + ')</div>');
- detail('<big><b>Unused</b></big>', f.unused);
- detail('Closure', f.closure);
- detail('Variable', f['var']);
- detail('Exception', f.exception);
- detail('Outer', f.outer);
- detail('Global', f.global);
- detail('Label', f.label);
- }
-
- if (data.member) {
- a = to_array(data.member);
- if (a.length) {
- a = a.sort();
- m = '<br><pre id=members>/*members ';
- l = 10;
- for (i = 0; i < a.length; i += 1) {
- k = a[i];
- n = k.name();
- if (l + n.length > 72) {
- o.push(m + '<br>');
- m = ' ';
- l = 1;
- }
- l += n.length + 2;
- if (data.member[k] === 1) {
- n = '<i>' + n + '</i>';
- }
- if (i < a.length - 1) {
- n += ', ';
- }
- m += n;
- }
- o.push(m + '<br>*/</pre>');
- }
- o.push('</div>');
- }
- }
- return o.join('');
- };
- itself.jslint = itself;
-
- itself.edition = '2010-02-20';
-
- if (typeof exports !== "undefined") {
- exports.JSLINT = itself;
- }
-
- return itself;
-
-}());
+++ /dev/null
-/***********************************************************************
-
- A JavaScript tokenizer / parser / beautifier / compressor.
-
- This version is suitable for Node.js. With minimal changes (the
- exports stuff) it should work on any JS platform.
-
- This file contains the tokenizer/parser. It is a port to JavaScript
- of parse-js [1], a JavaScript parser library written in Common Lisp
- by Marijn Haverbeke. Thank you Marijn!
-
- [1] http://marijn.haverbeke.nl/parse-js/
-
- Exported functions:
-
- - tokenizer(code) -- returns a function. Call the returned
- function to fetch the next token.
-
- - parse(code) -- returns an AST of the given JavaScript code.
-
- -------------------------------- (C) ---------------------------------
-
- Author: Mihai Bazon
- <mihai.bazon@gmail.com>
- http://mihai.bazon.net/blog
-
- Distributed under the BSD license:
-
- Copyright 2010 (c) Mihai Bazon <mihai.bazon@gmail.com>
- Based on parse-js (http://marijn.haverbeke.nl/parse-js/).
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- * Redistributions of source code must retain the above
- copyright notice, this list of conditions and the following
- disclaimer.
-
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
- EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- SUCH DAMAGE.
-
- ***********************************************************************/
-
-/* -----[ Tokenizer (constants) ]----- */
-
-var KEYWORDS = array_to_hash([
- "break",
- "case",
- "catch",
- "const",
- "continue",
- "default",
- "delete",
- "do",
- "else",
- "finally",
- "for",
- "function",
- "if",
- "in",
- "instanceof",
- "new",
- "return",
- "switch",
- "throw",
- "try",
- "typeof",
- "var",
- "void",
- "while",
- "with"
-]);
-
-var RESERVED_WORDS = array_to_hash([
- "abstract",
- "boolean",
- "byte",
- "char",
- "class",
- "debugger",
- "double",
- "enum",
- "export",
- "extends",
- "final",
- "float",
- "goto",
- "implements",
- "import",
- "int",
- "interface",
- "long",
- "native",
- "package",
- "private",
- "protected",
- "public",
- "short",
- "static",
- "super",
- "synchronized",
- "throws",
- "transient",
- "volatile"
-]);
-
-var KEYWORDS_BEFORE_EXPRESSION = array_to_hash([
- "return",
- "new",
- "delete",
- "throw",
- "else",
- "case"
-]);
-
-var KEYWORDS_ATOM = array_to_hash([
- "false",
- "null",
- "true",
- "undefined"
-]);
-
-var OPERATOR_CHARS = array_to_hash(characters("+-*&%=<>!?|~^"));
-
-var RE_HEX_NUMBER = /^0x[0-9a-f]+$/i;
-var RE_OCT_NUMBER = /^0[0-7]+$/;
-var RE_DEC_NUMBER = /^\d*\.?\d*(?:e[+-]?\d*(?:\d\.?|\.?\d)\d*)?$/i;
-
-var OPERATORS = array_to_hash([
- "in",
- "instanceof",
- "typeof",
- "new",
- "void",
- "delete",
- "++",
- "--",
- "+",
- "-",
- "!",
- "~",
- "&",
- "|",
- "^",
- "*",
- "/",
- "%",
- ">>",
- "<<",
- ">>>",
- "<",
- ">",
- "<=",
- ">=",
- "==",
- "===",
- "!=",
- "!==",
- "?",
- "=",
- "+=",
- "-=",
- "/=",
- "*=",
- "%=",
- ">>=",
- "<<=",
- ">>>=",
- "|=",
- "^=",
- "&=",
- "&&",
- "||"
-]);
-
-var WHITESPACE_CHARS = array_to_hash(characters(" \n\r\t\u200b"));
-
-var PUNC_BEFORE_EXPRESSION = array_to_hash(characters("[{}(,.;:"));
-
-var PUNC_CHARS = array_to_hash(characters("[]{}(),;:"));
-
-var REGEXP_MODIFIERS = array_to_hash(characters("gmsiy"));
-
-/* -----[ Tokenizer ]----- */
-
-// regexps adapted from http://xregexp.com/plugins/#unicode
-var UNICODE = {
- letter: new RegExp("[\\u0041-\\u005A\\u0061-\\u007A\\u00AA\\u00B5\\u00BA\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02C1\\u02C6-\\u02D1\\u02E0-\\u02E4\\u02EC\\u02EE\\u0370-\\u0374\\u0376\\u0377\\u037A-\\u037D\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03F5\\u03F7-\\u0481\\u048A-\\u0523\\u0531-\\u0556\\u0559\\u0561-\\u0587\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0621-\\u064A\\u066E\\u066F\\u0671-\\u06D3\\u06D5\\u06E5\\u06E6\\u06EE\\u06EF\\u06FA-\\u06FC\\u06FF\\u0710\\u0712-\\u072F\\u074D-\\u07A5\\u07B1\\u07CA-\\u07EA\\u07F4\\u07F5\\u07FA\\u0904-\\u0939\\u093D\\u0950\\u0958-\\u0961\\u0971\\u0972\\u097B-\\u097F\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09BD\\u09CE\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AD0\\u0AE0\\u0AE1\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B35-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B71\\u0B83\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB9\\u0BD0\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C3D\\u0C58\\u0C59\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CBD\\u0CDE\\u0CE0\\u0CE1\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D28\\u0D2A-\\u0D39\\u0D3D\\u0D60\\u0D61\\u0D7A-\\u0D7F\\u0D85-\\u0D96\\u0D9A-\\u0DB1\\u0DB3-\\u0DBB\\u0DBD\\u0DC0-\\u0DC6\\u0E01-\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E46\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD-\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0EC6\\u0EDC\\u0EDD\\u0F00\\u0F40-\\u0F47\\u0F49-\\u0F6C\\u0F88-\\u0F8B\\u1000-\\u102A\\u103F\\u1050-\\u1055\\u105A-\\u105D\\u1061\\u1065\\u1066\\u106E-\\u1070\\u1075-\\u1081\\u108E\\u10A0-\\u10C5\\u10D0-\\u10FA\\u10FC\\u1100-\\u1159\\u115F-\\u11A2\\u11A8-\\u11F9\\u1200-\\u1248\\u124A-\\u124D\\u1250-\\u1256\\u1258\\u125A-\\u125D\\u1260-\\u1288\\u128A-\\u128D\\u1290-\\u12B0\\u12B2-\\u12B5\\u12B8-\\u12BE\\u12C0\\u12C2-\\u12C5\\u12C8-\\u12D6\\u12D8-\\u1310\\u1312-\\u1315\\u1318-\\u135A\\u1380-\\u138F\\u13A0-\\u13F4\\u1401-\\u166C\\u166F-\\u1676\\u1681-\\u169A\\u16A0-\\u16EA\\u1700-\\u170C\\u170E-\\u1711\\u1720-\\u1731\\u1740-\\u1751\\u1760-\\u176C\\u176E-\\u1770\\u1780-\\u17B3\\u17D7\\u17DC\\u1820-\\u1877\\u1880-\\u18A8\\u18AA\\u1900-\\u191C\\u1950-\\u196D\\u1970-\\u1974\\u1980-\\u19A9\\u19C1-\\u19C7\\u1A00-\\u1A16\\u1B05-\\u1B33\\u1B45-\\u1B4B\\u1B83-\\u1BA0\\u1BAE\\u1BAF\\u1C00-\\u1C23\\u1C4D-\\u1C4F\\u1C5A-\\u1C7D\\u1D00-\\u1DBF\\u1E00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2071\\u207F\\u2090-\\u2094\\u2102\\u2107\\u210A-\\u2113\\u2115\\u2119-\\u211D\\u2124\\u2126\\u2128\\u212A-\\u212D\\u212F-\\u2139\\u213C-\\u213F\\u2145-\\u2149\\u214E\\u2183\\u2184\\u2C00-\\u2C2E\\u2C30-\\u2C5E\\u2C60-\\u2C6F\\u2C71-\\u2C7D\\u2C80-\\u2CE4\\u2D00-\\u2D25\\u2D30-\\u2D65\\u2D6F\\u2D80-\\u2D96\\u2DA0-\\u2DA6\\u2DA8-\\u2DAE\\u2DB0-\\u2DB6\\u2DB8-\\u2DBE\\u2DC0-\\u2DC6\\u2DC8-\\u2DCE\\u2DD0-\\u2DD6\\u2DD8-\\u2DDE\\u2E2F\\u3005\\u3006\\u3031-\\u3035\\u303B\\u303C\\u3041-\\u3096\\u309D-\\u309F\\u30A1-\\u30FA\\u30FC-\\u30FF\\u3105-\\u312D\\u3131-\\u318E\\u31A0-\\u31B7\\u31F0-\\u31FF\\u3400\\u4DB5\\u4E00\\u9FC3\\uA000-\\uA48C\\uA500-\\uA60C\\uA610-\\uA61F\\uA62A\\uA62B\\uA640-\\uA65F\\uA662-\\uA66E\\uA67F-\\uA697\\uA717-\\uA71F\\uA722-\\uA788\\uA78B\\uA78C\\uA7FB-\\uA801\\uA803-\\uA805\\uA807-\\uA80A\\uA80C-\\uA822\\uA840-\\uA873\\uA882-\\uA8B3\\uA90A-\\uA925\\uA930-\\uA946\\uAA00-\\uAA28\\uAA40-\\uAA42\\uAA44-\\uAA4B\\uAC00\\uD7A3\\uF900-\\uFA2D\\uFA30-\\uFA6A\\uFA70-\\uFAD9\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFB1D\\uFB1F-\\uFB28\\uFB2A-\\uFB36\\uFB38-\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46-\\uFBB1\\uFBD3-\\uFD3D\\uFD50-\\uFD8F\\uFD92-\\uFDC7\\uFDF0-\\uFDFB\\uFE70-\\uFE74\\uFE76-\\uFEFC\\uFF21-\\uFF3A\\uFF41-\\uFF5A\\uFF66-\\uFFBE\\uFFC2-\\uFFC7\\uFFCA-\\uFFCF\\uFFD2-\\uFFD7\\uFFDA-\\uFFDC]"),
- non_spacing_mark: new RegExp("[\\u0300-\\u036F\\u0483-\\u0487\\u0591-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065E\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0711\\u0730-\\u074A\\u07A6-\\u07B0\\u07EB-\\u07F3\\u0816-\\u0819\\u081B-\\u0823\\u0825-\\u0827\\u0829-\\u082D\\u0900-\\u0902\\u093C\\u0941-\\u0948\\u094D\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09BC\\u09C1-\\u09C4\\u09CD\\u09E2\\u09E3\\u0A01\\u0A02\\u0A3C\\u0A41\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A51\\u0A70\\u0A71\\u0A75\\u0A81\\u0A82\\u0ABC\\u0AC1-\\u0AC5\\u0AC7\\u0AC8\\u0ACD\\u0AE2\\u0AE3\\u0B01\\u0B3C\\u0B3F\\u0B41-\\u0B44\\u0B4D\\u0B56\\u0B62\\u0B63\\u0B82\\u0BC0\\u0BCD\\u0C3E-\\u0C40\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C62\\u0C63\\u0CBC\\u0CBF\\u0CC6\\u0CCC\\u0CCD\\u0CE2\\u0CE3\\u0D41-\\u0D44\\u0D4D\\u0D62\\u0D63\\u0DCA\\u0DD2-\\u0DD4\\u0DD6\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F71-\\u0F7E\\u0F80-\\u0F84\\u0F86\\u0F87\\u0F90-\\u0F97\\u0F99-\\u0FBC\\u0FC6\\u102D-\\u1030\\u1032-\\u1037\\u1039\\u103A\\u103D\\u103E\\u1058\\u1059\\u105E-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108D\\u109D\\u135F\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17B7-\\u17BD\\u17C6\\u17C9-\\u17D3\\u17DD\\u180B-\\u180D\\u18A9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193B\\u1A17\\u1A18\\u1A56\\u1A58-\\u1A5E\\u1A60\\u1A62\\u1A65-\\u1A6C\\u1A73-\\u1A7C\\u1A7F\\u1B00-\\u1B03\\u1B34\\u1B36-\\u1B3A\\u1B3C\\u1B42\\u1B6B-\\u1B73\\u1B80\\u1B81\\u1BA2-\\u1BA5\\u1BA8\\u1BA9\\u1C2C-\\u1C33\\u1C36\\u1C37\\u1CD0-\\u1CD2\\u1CD4-\\u1CE0\\u1CE2-\\u1CE8\\u1CED\\u1DC0-\\u1DE6\\u1DFD-\\u1DFF\\u20D0-\\u20DC\\u20E1\\u20E5-\\u20F0\\u2CEF-\\u2CF1\\u2DE0-\\u2DFF\\u302A-\\u302F\\u3099\\u309A\\uA66F\\uA67C\\uA67D\\uA6F0\\uA6F1\\uA802\\uA806\\uA80B\\uA825\\uA826\\uA8C4\\uA8E0-\\uA8F1\\uA926-\\uA92D\\uA947-\\uA951\\uA980-\\uA982\\uA9B3\\uA9B6-\\uA9B9\\uA9BC\\uAA29-\\uAA2E\\uAA31\\uAA32\\uAA35\\uAA36\\uAA43\\uAA4C\\uAAB0\\uAAB2-\\uAAB4\\uAAB7\\uAAB8\\uAABE\\uAABF\\uAAC1\\uABE5\\uABE8\\uABED\\uFB1E\\uFE00-\\uFE0F\\uFE20-\\uFE26]"),
- space_combining_mark: new RegExp("[\\u0903\\u093E-\\u0940\\u0949-\\u094C\\u094E\\u0982\\u0983\\u09BE-\\u09C0\\u09C7\\u09C8\\u09CB\\u09CC\\u09D7\\u0A03\\u0A3E-\\u0A40\\u0A83\\u0ABE-\\u0AC0\\u0AC9\\u0ACB\\u0ACC\\u0B02\\u0B03\\u0B3E\\u0B40\\u0B47\\u0B48\\u0B4B\\u0B4C\\u0B57\\u0BBE\\u0BBF\\u0BC1\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCC\\u0BD7\\u0C01-\\u0C03\\u0C41-\\u0C44\\u0C82\\u0C83\\u0CBE\\u0CC0-\\u0CC4\\u0CC7\\u0CC8\\u0CCA\\u0CCB\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D40\\u0D46-\\u0D48\\u0D4A-\\u0D4C\\u0D57\\u0D82\\u0D83\\u0DCF-\\u0DD1\\u0DD8-\\u0DDF\\u0DF2\\u0DF3\\u0F3E\\u0F3F\\u0F7F\\u102B\\u102C\\u1031\\u1038\\u103B\\u103C\\u1056\\u1057\\u1062-\\u1064\\u1067-\\u106D\\u1083\\u1084\\u1087-\\u108C\\u108F\\u109A-\\u109C\\u17B6\\u17BE-\\u17C5\\u17C7\\u17C8\\u1923-\\u1926\\u1929-\\u192B\\u1930\\u1931\\u1933-\\u1938\\u19B0-\\u19C0\\u19C8\\u19C9\\u1A19-\\u1A1B\\u1A55\\u1A57\\u1A61\\u1A63\\u1A64\\u1A6D-\\u1A72\\u1B04\\u1B35\\u1B3B\\u1B3D-\\u1B41\\u1B43\\u1B44\\u1B82\\u1BA1\\u1BA6\\u1BA7\\u1BAA\\u1C24-\\u1C2B\\u1C34\\u1C35\\u1CE1\\u1CF2\\uA823\\uA824\\uA827\\uA880\\uA881\\uA8B4-\\uA8C3\\uA952\\uA953\\uA983\\uA9B4\\uA9B5\\uA9BA\\uA9BB\\uA9BD-\\uA9C0\\uAA2F\\uAA30\\uAA33\\uAA34\\uAA4D\\uAA7B\\uABE3\\uABE4\\uABE6\\uABE7\\uABE9\\uABEA\\uABEC]"),
- connector_punctuation: new RegExp("[\\u005F\\u203F\\u2040\\u2054\\uFE33\\uFE34\\uFE4D-\\uFE4F\\uFF3F]")
-};
-
-function is_letter(ch) {
- return UNICODE.letter.test(ch);
-};
-
-function is_digit(ch) {
- ch = ch.charCodeAt(0);
- return ch >= 48 && ch <= 57; //XXX: find out if "UnicodeDigit" means something else than 0..9
-};
-
-function is_alphanumeric_char(ch) {
- return is_digit(ch) || is_letter(ch);
-};
-
-function is_unicode_combining_mark(ch) {
- return UNICODE.non_spacing_mark.test(ch) || UNICODE.space_combining_mark.test(ch);
-};
-
-function is_unicode_connector_punctuation(ch) {
- return UNICODE.connector_punctuation.test(ch);
-};
-
-function is_identifier_start(ch) {
- return ch == "$" || ch == "_" || is_letter(ch);
-};
-
-function is_identifier_char(ch) {
- return is_identifier_start(ch)
- || is_unicode_combining_mark(ch)
- || is_digit(ch)
- || is_unicode_connector_punctuation(ch)
- || ch == "\u200c" // zero-width non-joiner <ZWNJ>
- || ch == "\u200d" // zero-width joiner <ZWJ> (in my ECMA-262 PDF, this is also 200c)
- ;
-};
-
-function parse_js_number(num) {
- if (RE_HEX_NUMBER.test(num)) {
- return parseInt(num.substr(2), 16);
- } else if (RE_OCT_NUMBER.test(num)) {
- return parseInt(num.substr(1), 8);
- } else if (RE_DEC_NUMBER.test(num)) {
- return parseFloat(num);
- }
-};
-
-function JS_Parse_Error(message, line, col, pos) {
- this.message = message;
- this.line = line;
- this.col = col;
- this.pos = pos;
- try {
- ({})();
- } catch(ex) {
- this.stack = ex.stack;
- };
-};
-
-JS_Parse_Error.prototype.toString = function() {
- return this.message + " (line: " + this.line + ", col: " + this.col + ", pos: " + this.pos + ")" + "\n\n" + this.stack;
-};
-
-function js_error(message, line, col, pos) {
- throw new JS_Parse_Error(message, line, col, pos);
-};
-
-function is_token(token, type, val) {
- return token.type == type && (val == null || token.value == val);
-};
-
-var EX_EOF = {};
-
-function tokenizer($TEXT) {
-
- var S = {
- text : $TEXT.replace(/\r\n?|[\n\u2028\u2029]/g, "\n").replace(/^\uFEFF/, ''),
- pos : 0,
- tokpos : 0,
- line : 0,
- tokline : 0,
- col : 0,
- tokcol : 0,
- newline_before : false,
- regex_allowed : false,
- comments_before : []
- };
-
- function peek() { return S.text.charAt(S.pos); };
-
- function next(signal_eof) {
- var ch = S.text.charAt(S.pos++);
- if (signal_eof && !ch)
- throw EX_EOF;
- if (ch == "\n") {
- S.newline_before = true;
- ++S.line;
- S.col = 0;
- } else {
- ++S.col;
- }
- return ch;
- };
-
- function eof() {
- return !S.peek();
- };
-
- function find(what, signal_eof) {
- var pos = S.text.indexOf(what, S.pos);
- if (signal_eof && pos == -1) throw EX_EOF;
- return pos;
- };
-
- function start_token() {
- S.tokline = S.line;
- S.tokcol = S.col;
- S.tokpos = S.pos;
- };
-
- function token(type, value, is_comment) {
- S.regex_allowed = ((type == "operator" && !HOP(UNARY_POSTFIX, value)) ||
- (type == "keyword" && HOP(KEYWORDS_BEFORE_EXPRESSION, value)) ||
- (type == "punc" && HOP(PUNC_BEFORE_EXPRESSION, value)));
- var ret = {
- type : type,
- value : value,
- line : S.tokline,
- col : S.tokcol,
- pos : S.tokpos,
- nlb : S.newline_before
- };
- if (!is_comment) {
- ret.comments_before = S.comments_before;
- S.comments_before = [];
- }
- S.newline_before = false;
- return ret;
- };
-
- function skip_whitespace() {
- while (HOP(WHITESPACE_CHARS, peek()))
- next();
- };
-
- function read_while(pred) {
- var ret = "", ch = peek(), i = 0;
- while (ch && pred(ch, i++)) {
- ret += next();
- ch = peek();
- }
- return ret;
- };
-
- function parse_error(err) {
- js_error(err, S.tokline, S.tokcol, S.tokpos);
- };
-
- function read_num(prefix) {
- var has_e = false, after_e = false, has_x = false, has_dot = prefix == ".";
- var num = read_while(function(ch, i){
- if (ch == "x" || ch == "X") {
- if (has_x) return false;
- return has_x = true;
- }
- if (!has_x && (ch == "E" || ch == "e")) {
- if (has_e) return false;
- return has_e = after_e = true;
- }
- if (ch == "-") {
- if (after_e || (i == 0 && !prefix)) return true;
- return false;
- }
- if (ch == "+") return after_e;
- after_e = false;
- if (ch == ".") {
- if (!has_dot && !has_x)
- return has_dot = true;
- return false;
- }
- return is_alphanumeric_char(ch);
- });
- if (prefix)
- num = prefix + num;
- var valid = parse_js_number(num);
- if (!isNaN(valid)) {
- return token("num", valid);
- } else {
- parse_error("Invalid syntax: " + num);
- }
- };
-
- function read_escaped_char() {
- var ch = next(true);
- switch (ch) {
- case "n" : return "\n";
- case "r" : return "\r";
- case "t" : return "\t";
- case "b" : return "\b";
- case "v" : return "\v";
- case "f" : return "\f";
- case "0" : return "\0";
- case "x" : return String.fromCharCode(hex_bytes(2));
- case "u" : return String.fromCharCode(hex_bytes(4));
- default : return ch;
- }
- };
-
- function hex_bytes(n) {
- var num = 0;
- for (; n > 0; --n) {
- var digit = parseInt(next(true), 16);
- if (isNaN(digit))
- parse_error("Invalid hex-character pattern in string");
- num = (num << 4) | digit;
- }
- return num;
- };
-
- function read_string() {
- return with_eof_error("Unterminated string constant", function(){
- var quote = next(), ret = "";
- for (;;) {
- var ch = next(true);
- if (ch == "\\") ch = read_escaped_char();
- else if (ch == quote) break;
- ret += ch;
- }
- return token("string", ret);
- });
- };
-
- function read_line_comment() {
- next();
- var i = find("\n"), ret;
- if (i == -1) {
- ret = S.text.substr(S.pos);
- S.pos = S.text.length;
- } else {
- ret = S.text.substring(S.pos, i);
- S.pos = i;
- }
- return token("comment1", ret, true);
- };
-
- function read_multiline_comment() {
- next();
- return with_eof_error("Unterminated multiline comment", function(){
- var i = find("*/", true),
- text = S.text.substring(S.pos, i),
- tok = token("comment2", text, true);
- S.pos = i + 2;
- S.line += text.split("\n").length - 1;
- S.newline_before = text.indexOf("\n") >= 0;
-
- // https://github.com/mishoo/UglifyJS/issues/#issue/100
- if (/^@cc_on/i.test(text)) {
- warn("WARNING: at line " + S.line);
- warn("*** Found \"conditional comment\": " + text);
- warn("*** UglifyJS DISCARDS ALL COMMENTS. This means your code might no longer work properly in Internet Explorer.");
- }
-
- return tok;
- });
- };
-
- function read_name() {
- var backslash = false, name = "", ch;
- while ((ch = peek()) != null) {
- if (!backslash) {
- if (ch == "\\") backslash = true, next();
- else if (is_identifier_char(ch)) name += next();
- else break;
- }
- else {
- if (ch != "u") parse_error("Expecting UnicodeEscapeSequence -- uXXXX");
- ch = read_escaped_char();
- if (!is_identifier_char(ch)) parse_error("Unicode char: " + ch.charCodeAt(0) + " is not valid in identifier");
- name += ch;
- backslash = false;
- }
- }
- return name;
- };
-
- function read_regexp() {
- return with_eof_error("Unterminated regular expression", function(){
- var prev_backslash = false, regexp = "", ch, in_class = false;
- while ((ch = next(true))) if (prev_backslash) {
- regexp += "\\" + ch;
- prev_backslash = false;
- } else if (ch == "[") {
- in_class = true;
- regexp += ch;
- } else if (ch == "]" && in_class) {
- in_class = false;
- regexp += ch;
- } else if (ch == "/" && !in_class) {
- break;
- } else if (ch == "\\") {
- prev_backslash = true;
- } else {
- regexp += ch;
- }
- var mods = read_name();
- return token("regexp", [ regexp, mods ]);
- });
- };
-
- function read_operator(prefix) {
- function grow(op) {
- if (!peek()) return op;
- var bigger = op + peek();
- if (HOP(OPERATORS, bigger)) {
- next();
- return grow(bigger);
- } else {
- return op;
- }
- };
- return token("operator", grow(prefix || next()));
- };
-
- function handle_slash() {
- next();
- var regex_allowed = S.regex_allowed;
- switch (peek()) {
- case "/":
- S.comments_before.push(read_line_comment());
- S.regex_allowed = regex_allowed;
- return next_token();
- case "*":
- S.comments_before.push(read_multiline_comment());
- S.regex_allowed = regex_allowed;
- return next_token();
- }
- return S.regex_allowed ? read_regexp() : read_operator("/");
- };
-
- function handle_dot() {
- next();
- return is_digit(peek())
- ? read_num(".")
- : token("punc", ".");
- };
-
- function read_word() {
- var word = read_name();
- return !HOP(KEYWORDS, word)
- ? token("name", word)
- : HOP(OPERATORS, word)
- ? token("operator", word)
- : HOP(KEYWORDS_ATOM, word)
- ? token("atom", word)
- : token("keyword", word);
- };
-
- function with_eof_error(eof_error, cont) {
- try {
- return cont();
- } catch(ex) {
- if (ex === EX_EOF) parse_error(eof_error);
- else throw ex;
- }
- };
-
- function next_token(force_regexp) {
- if (force_regexp)
- return read_regexp();
- skip_whitespace();
- start_token();
- var ch = peek();
- if (!ch) return token("eof");
- if (is_digit(ch)) return read_num();
- if (ch == '"' || ch == "'") return read_string();
- if (HOP(PUNC_CHARS, ch)) return token("punc", next());
- if (ch == ".") return handle_dot();
- if (ch == "/") return handle_slash();
- if (HOP(OPERATOR_CHARS, ch)) return read_operator();
- if (ch == "\\" || is_identifier_start(ch)) return read_word();
- parse_error("Unexpected character '" + ch + "'");
- };
-
- next_token.context = function(nc) {
- if (nc) S = nc;
- return S;
- };
-
- return next_token;
-
-};
-
-/* -----[ Parser (constants) ]----- */
-
-var UNARY_PREFIX = array_to_hash([
- "typeof",
- "void",
- "delete",
- "--",
- "++",
- "!",
- "~",
- "-",
- "+"
-]);
-
-var UNARY_POSTFIX = array_to_hash([ "--", "++" ]);
-
-var ASSIGNMENT = (function(a, ret, i){
- while (i < a.length) {
- ret[a[i]] = a[i].substr(0, a[i].length - 1);
- i++;
- }
- return ret;
-})(
- ["+=", "-=", "/=", "*=", "%=", ">>=", "<<=", ">>>=", "|=", "^=", "&="],
- { "=": true },
- 0
-);
-
-var PRECEDENCE = (function(a, ret){
- for (var i = 0, n = 1; i < a.length; ++i, ++n) {
- var b = a[i];
- for (var j = 0; j < b.length; ++j) {
- ret[b[j]] = n;
- }
- }
- return ret;
-})(
- [
- ["||"],
- ["&&"],
- ["|"],
- ["^"],
- ["&"],
- ["==", "===", "!=", "!=="],
- ["<", ">", "<=", ">=", "in", "instanceof"],
- [">>", "<<", ">>>"],
- ["+", "-"],
- ["*", "/", "%"]
- ],
- {}
-);
-
-var STATEMENTS_WITH_LABELS = array_to_hash([ "for", "do", "while", "switch" ]);
-
-var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "name" ]);
-
-/* -----[ Parser ]----- */
-
-function NodeWithToken(str, start, end) {
- this.name = str;
- this.start = start;
- this.end = end;
-};
-
-NodeWithToken.prototype.toString = function() { return this.name; };
-
-function parse($TEXT, exigent_mode, embed_tokens) {
-
- var S = {
- input : typeof $TEXT == "string" ? tokenizer($TEXT, true) : $TEXT,
- token : null,
- prev : null,
- peeked : null,
- in_function : 0,
- in_loop : 0,
- labels : []
- };
-
- S.token = next();
-
- function is(type, value) {
- return is_token(S.token, type, value);
- };
-
- function peek() { return S.peeked || (S.peeked = S.input()); };
-
- function next() {
- S.prev = S.token;
- if (S.peeked) {
- S.token = S.peeked;
- S.peeked = null;
- } else {
- S.token = S.input();
- }
- return S.token;
- };
-
- function prev() {
- return S.prev;
- };
-
- function croak(msg, line, col, pos) {
- var ctx = S.input.context();
- js_error(msg,
- line != null ? line : ctx.tokline,
- col != null ? col : ctx.tokcol,
- pos != null ? pos : ctx.tokpos);
- };
-
- function token_error(token, msg) {
- croak(msg, token.line, token.col);
- };
-
- function unexpected(token) {
- if (token == null)
- token = S.token;
- token_error(token, "Unexpected token: " + token.type + " (" + token.value + ")");
- };
-
- function expect_token(type, val) {
- if (is(type, val)) {
- return next();
- }
- token_error(S.token, "Unexpected token " + S.token.type + ", expected " + type);
- };
-
- function expect(punc) { return expect_token("punc", punc); };
-
- function can_insert_semicolon() {
- return !exigent_mode && (
- S.token.nlb || is("eof") || is("punc", "}")
- );
- };
-
- function semicolon() {
- if (is("punc", ";")) next();
- else if (!can_insert_semicolon()) unexpected();
- };
-
- function as() {
- return slice(arguments);
- };
-
- function parenthesised() {
- expect("(");
- var ex = expression();
- expect(")");
- return ex;
- };
-
- function add_tokens(str, start, end) {
- return str instanceof NodeWithToken ? str : new NodeWithToken(str, start, end);
- };
-
- function maybe_embed_tokens(parser) {
- if (embed_tokens) return function() {
- var start = S.token;
- var ast = parser.apply(this, arguments);
- ast[0] = add_tokens(ast[0], start, prev());
- return ast;
- };
- else return parser;
- };
-
- var statement = maybe_embed_tokens(function() {
- if (is("operator", "/")) {
- S.peeked = null;
- S.token = S.input(true); // force regexp
- }
- switch (S.token.type) {
- case "num":
- case "string":
- case "regexp":
- case "operator":
- case "atom":
- return simple_statement();
-
- case "name":
- return is_token(peek(), "punc", ":")
- ? labeled_statement(prog1(S.token.value, next, next))
- : simple_statement();
-
- case "punc":
- switch (S.token.value) {
- case "{":
- return as("block", block_());
- case "[":
- case "(":
- return simple_statement();
- case ";":
- next();
- return as("block");
- default:
- unexpected();
- }
-
- case "keyword":
- switch (prog1(S.token.value, next)) {
- case "break":
- return break_cont("break");
-
- case "continue":
- return break_cont("continue");
-
- case "debugger":
- semicolon();
- return as("debugger");
-
- case "do":
- return (function(body){
- expect_token("keyword", "while");
- return as("do", prog1(parenthesised, semicolon), body);
- })(in_loop(statement));
-
- case "for":
- return for_();
-
- case "function":
- return function_(true);
-
- case "if":
- return if_();
-
- case "return":
- if (S.in_function == 0)
- croak("'return' outside of function");
- return as("return",
- is("punc", ";")
- ? (next(), null)
- : can_insert_semicolon()
- ? null
- : prog1(expression, semicolon));
-
- case "switch":
- return as("switch", parenthesised(), switch_block_());
-
- case "throw":
- return as("throw", prog1(expression, semicolon));
-
- case "try":
- return try_();
-
- case "var":
- return prog1(var_, semicolon);
-
- case "const":
- return prog1(const_, semicolon);
-
- case "while":
- return as("while", parenthesised(), in_loop(statement));
-
- case "with":
- return as("with", parenthesised(), statement());
-
- default:
- unexpected();
- }
- }
- });
-
- function labeled_statement(label) {
- S.labels.push(label);
- var start = S.token, stat = statement();
- if (exigent_mode && !HOP(STATEMENTS_WITH_LABELS, stat[0]))
- unexpected(start);
- S.labels.pop();
- return as("label", label, stat);
- };
-
- function simple_statement() {
- return as("stat", prog1(expression, semicolon));
- };
-
- function break_cont(type) {
- var name = is("name") ? S.token.value : null;
- if (name != null) {
- next();
- if (!member(name, S.labels))
- croak("Label " + name + " without matching loop or statement");
- }
- else if (S.in_loop == 0)
- croak(type + " not inside a loop or switch");
- semicolon();
- return as(type, name);
- };
-
- function for_() {
- expect("(");
- var init = null;
- if (!is("punc", ";")) {
- init = is("keyword", "var")
- ? (next(), var_(true))
- : expression(true, true);
- if (is("operator", "in"))
- return for_in(init);
- }
- return regular_for(init);
- };
-
- function regular_for(init) {
- expect(";");
- var test = is("punc", ";") ? null : expression();
- expect(";");
- var step = is("punc", ")") ? null : expression();
- expect(")");
- return as("for", init, test, step, in_loop(statement));
- };
-
- function for_in(init) {
- var lhs = init[0] == "var" ? as("name", init[1][0]) : init;
- next();
- var obj = expression();
- expect(")");
- return as("for-in", init, lhs, obj, in_loop(statement));
- };
-
- var function_ = maybe_embed_tokens(function(in_statement) {
- var name = is("name") ? prog1(S.token.value, next) : null;
- if (in_statement && !name)
- unexpected();
- expect("(");
- return as(in_statement ? "defun" : "function",
- name,
- // arguments
- (function(first, a){
- while (!is("punc", ")")) {
- if (first) first = false; else expect(",");
- if (!is("name")) unexpected();
- a.push(S.token.value);
- next();
- }
- next();
- return a;
- })(true, []),
- // body
- (function(){
- ++S.in_function;
- var loop = S.in_loop;
- S.in_loop = 0;
- var a = block_();
- --S.in_function;
- S.in_loop = loop;
- return a;
- })());
- });
-
- function if_() {
- var cond = parenthesised(), body = statement(), belse;
- if (is("keyword", "else")) {
- next();
- belse = statement();
- }
- return as("if", cond, body, belse);
- };
-
- function block_() {
- expect("{");
- var a = [];
- while (!is("punc", "}")) {
- if (is("eof")) unexpected();
- a.push(statement());
- }
- next();
- return a;
- };
-
- var switch_block_ = curry(in_loop, function(){
- expect("{");
- var a = [], cur = null;
- while (!is("punc", "}")) {
- if (is("eof")) unexpected();
- if (is("keyword", "case")) {
- next();
- cur = [];
- a.push([ expression(), cur ]);
- expect(":");
- }
- else if (is("keyword", "default")) {
- next();
- expect(":");
- cur = [];
- a.push([ null, cur ]);
- }
- else {
- if (!cur) unexpected();
- cur.push(statement());
- }
- }
- next();
- return a;
- });
-
- function try_() {
- var body = block_(), bcatch, bfinally;
- if (is("keyword", "catch")) {
- next();
- expect("(");
- if (!is("name"))
- croak("Name expected");
- var name = S.token.value;
- next();
- expect(")");
- bcatch = [ name, block_() ];
- }
- if (is("keyword", "finally")) {
- next();
- bfinally = block_();
- }
- if (!bcatch && !bfinally)
- croak("Missing catch/finally blocks");
- return as("try", body, bcatch, bfinally);
- };
-
- function vardefs(no_in) {
- var a = [];
- for (;;) {
- if (!is("name"))
- unexpected();
- var name = S.token.value;
- next();
- if (is("operator", "=")) {
- next();
- a.push([ name, expression(false, no_in) ]);
- } else {
- a.push([ name ]);
- }
- if (!is("punc", ","))
- break;
- next();
- }
- return a;
- };
-
- function var_(no_in) {
- return as("var", vardefs(no_in));
- };
-
- function const_() {
- return as("const", vardefs());
- };
-
- function new_() {
- var newexp = expr_atom(false), args;
- if (is("punc", "(")) {
- next();
- args = expr_list(")");
- } else {
- args = [];
- }
- return subscripts(as("new", newexp, args), true);
- };
-
- var expr_atom = maybe_embed_tokens(function(allow_calls) {
- if (is("operator", "new")) {
- next();
- return new_();
- }
- if (is("operator") && HOP(UNARY_PREFIX, S.token.value)) {
- return make_unary("unary-prefix",
- prog1(S.token.value, next),
- expr_atom(allow_calls));
- }
- if (is("punc")) {
- switch (S.token.value) {
- case "(":
- next();
- return subscripts(prog1(expression, curry(expect, ")")), allow_calls);
- case "[":
- next();
- return subscripts(array_(), allow_calls);
- case "{":
- next();
- return subscripts(object_(), allow_calls);
- }
- unexpected();
- }
- if (is("keyword", "function")) {
- next();
- return subscripts(function_(false), allow_calls);
- }
- if (HOP(ATOMIC_START_TOKEN, S.token.type)) {
- var atom = S.token.type == "regexp"
- ? as("regexp", S.token.value[0], S.token.value[1])
- : as(S.token.type, S.token.value);
- return subscripts(prog1(atom, next), allow_calls);
- }
- unexpected();
- });
-
- function expr_list(closing, allow_trailing_comma, allow_empty) {
- var first = true, a = [];
- while (!is("punc", closing)) {
- if (first) first = false; else expect(",");
- if (allow_trailing_comma && is("punc", closing)) break;
- if (is("punc", ",") && allow_empty) {
- a.push([ "atom", "undefined" ]);
- } else {
- a.push(expression(false));
- }
- }
- next();
- return a;
- };
-
- function array_() {
- return as("array", expr_list("]", !exigent_mode, true));
- };
-
- function object_() {
- var first = true, a = [];
- while (!is("punc", "}")) {
- if (first) first = false; else expect(",");
- if (!exigent_mode && is("punc", "}"))
- // allow trailing comma
- break;
- var type = S.token.type;
- var name = as_property_name();
- if (type == "name" && (name == "get" || name == "set") && !is("punc", ":")) {
- a.push([ as_name(), function_(false), name ]);
- } else {
- expect(":");
- a.push([ name, expression(false) ]);
- }
- }
- next();
- return as("object", a);
- };
-
- function as_property_name() {
- switch (S.token.type) {
- case "num":
- case "string":
- return prog1(S.token.value, next);
- }
- return as_name();
- };
-
- function as_name() {
- switch (S.token.type) {
- case "name":
- case "operator":
- case "keyword":
- case "atom":
- return prog1(S.token.value, next);
- default:
- unexpected();
- }
- };
-
- function subscripts(expr, allow_calls) {
- if (is("punc", ".")) {
- next();
- return subscripts(as("dot", expr, as_name()), allow_calls);
- }
- if (is("punc", "[")) {
- next();
- return subscripts(as("sub", expr, prog1(expression, curry(expect, "]"))), allow_calls);
- }
- if (allow_calls && is("punc", "(")) {
- next();
- return subscripts(as("call", expr, expr_list(")")), true);
- }
- if (allow_calls && is("operator") && HOP(UNARY_POSTFIX, S.token.value)) {
- return prog1(curry(make_unary, "unary-postfix", S.token.value, expr),
- next);
- }
- return expr;
- };
-
- function make_unary(tag, op, expr) {
- if ((op == "++" || op == "--") && !is_assignable(expr))
- croak("Invalid use of " + op + " operator");
- return as(tag, op, expr);
- };
-
- function expr_op(left, min_prec, no_in) {
- var op = is("operator") ? S.token.value : null;
- if (op && op == "in" && no_in) op = null;
- var prec = op != null ? PRECEDENCE[op] : null;
- if (prec != null && prec > min_prec) {
- next();
- var right = expr_op(expr_atom(true), prec, no_in);
- return expr_op(as("binary", op, left, right), min_prec, no_in);
- }
- return left;
- };
-
- function expr_ops(no_in) {
- return expr_op(expr_atom(true), 0, no_in);
- };
-
- function maybe_conditional(no_in) {
- var expr = expr_ops(no_in);
- if (is("operator", "?")) {
- next();
- var yes = expression(false);
- expect(":");
- return as("conditional", expr, yes, expression(false, no_in));
- }
- return expr;
- };
-
- function is_assignable(expr) {
- if (!exigent_mode) return true;
- switch (expr[0]) {
- case "dot":
- case "sub":
- case "new":
- case "call":
- return true;
- case "name":
- return expr[1] != "this";
- }
- };
-
- function maybe_assign(no_in) {
- var left = maybe_conditional(no_in), val = S.token.value;
- if (is("operator") && HOP(ASSIGNMENT, val)) {
- if (is_assignable(left)) {
- next();
- return as("assign", ASSIGNMENT[val], left, maybe_assign(no_in));
- }
- croak("Invalid assignment");
- }
- return left;
- };
-
- var expression = maybe_embed_tokens(function(commas, no_in) {
- if (arguments.length == 0)
- commas = true;
- var expr = maybe_assign(no_in);
- if (commas && is("punc", ",")) {
- next();
- return as("seq", expr, expression(true, no_in));
- }
- return expr;
- });
-
- function in_loop(cont) {
- try {
- ++S.in_loop;
- return cont();
- } finally {
- --S.in_loop;
- }
- };
-
- return as("toplevel", (function(a){
- while (!is("eof"))
- a.push(statement());
- return a;
- })([]));
-
-};
-
-/* -----[ Utilities ]----- */
-
-function curry(f) {
- var args = slice(arguments, 1);
- return function() { return f.apply(this, args.concat(slice(arguments))); };
-};
-
-function prog1(ret) {
- if (ret instanceof Function)
- ret = ret();
- for (var i = 1, n = arguments.length; --n > 0; ++i)
- arguments[i]();
- return ret;
-};
-
-function array_to_hash(a) {
- var ret = {};
- for (var i = 0; i < a.length; ++i)
- ret[a[i]] = true;
- return ret;
-};
-
-function slice(a, start) {
- return Array.prototype.slice.call(a, start == null ? 0 : start);
-};
-
-function characters(str) {
- return str.split("");
-};
-
-function member(name, array) {
- for (var i = array.length; --i >= 0;)
- if (array[i] === name)
- return true;
- return false;
-};
-
-function HOP(obj, prop) {
- return Object.prototype.hasOwnProperty.call(obj, prop);
-};
-
-var warn = function() {};
-
-/* -----[ Exports ]----- */
-
-exports.tokenizer = tokenizer;
-exports.parse = parse;
-exports.slice = slice;
-exports.curry = curry;
-exports.member = member;
-exports.array_to_hash = array_to_hash;
-exports.PRECEDENCE = PRECEDENCE;
-exports.KEYWORDS_ATOM = KEYWORDS_ATOM;
-exports.RESERVED_WORDS = RESERVED_WORDS;
-exports.KEYWORDS = KEYWORDS;
-exports.ATOMIC_START_TOKEN = ATOMIC_START_TOKEN;
-exports.OPERATORS = OPERATORS;
-exports.is_alphanumeric_char = is_alphanumeric_char;
-exports.set_logger = function(logger) {
- warn = logger;
-};
+++ /dev/null
-/***********************************************************************
-
- A JavaScript tokenizer / parser / beautifier / compressor.
-
- This version is suitable for Node.js. With minimal changes (the
- exports stuff) it should work on any JS platform.
-
- This file implements some AST processors. They work on data built
- by parse-js.
-
- Exported functions:
-
- - ast_mangle(ast, options) -- mangles the variable/function names
- in the AST. Returns an AST.
-
- - ast_squeeze(ast) -- employs various optimizations to make the
- final generated code even smaller. Returns an AST.
-
- - gen_code(ast, options) -- generates JS code from the AST. Pass
- true (or an object, see the code for some options) as second
- argument to get "pretty" (indented) code.
-
- -------------------------------- (C) ---------------------------------
-
- Author: Mihai Bazon
- <mihai.bazon@gmail.com>
- http://mihai.bazon.net/blog
-
- Distributed under the BSD license:
-
- Copyright 2010 (c) Mihai Bazon <mihai.bazon@gmail.com>
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
-
- * Redistributions of source code must retain the above
- copyright notice, this list of conditions and the following
- disclaimer.
-
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
- EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- SUCH DAMAGE.
-
- ***********************************************************************/
-
-var jsp = require("./parse-js"),
- slice = jsp.slice,
- member = jsp.member,
- PRECEDENCE = jsp.PRECEDENCE,
- OPERATORS = jsp.OPERATORS;
-
-/* -----[ helper for AST traversal ]----- */
-
-function ast_walker(ast) {
- function _vardefs(defs) {
- return [ this[0], MAP(defs, function(def){
- var a = [ def[0] ];
- if (def.length > 1)
- a[1] = walk(def[1]);
- return a;
- }) ];
- };
- function _block(statements) {
- var out = [ this[0] ];
- if (statements != null)
- out.push(MAP(statements, walk));
- return out;
- };
- var walkers = {
- "string": function(str) {
- return [ this[0], str ];
- },
- "num": function(num) {
- return [ this[0], num ];
- },
- "name": function(name) {
- return [ this[0], name ];
- },
- "toplevel": function(statements) {
- return [ this[0], MAP(statements, walk) ];
- },
- "block": _block,
- "splice": _block,
- "var": _vardefs,
- "const": _vardefs,
- "try": function(t, c, f) {
- return [
- this[0],
- MAP(t, walk),
- c != null ? [ c[0], MAP(c[1], walk) ] : null,
- f != null ? MAP(f, walk) : null
- ];
- },
- "throw": function(expr) {
- return [ this[0], walk(expr) ];
- },
- "new": function(ctor, args) {
- return [ this[0], walk(ctor), MAP(args, walk) ];
- },
- "switch": function(expr, body) {
- return [ this[0], walk(expr), MAP(body, function(branch){
- return [ branch[0] ? walk(branch[0]) : null,
- MAP(branch[1], walk) ];
- }) ];
- },
- "break": function(label) {
- return [ this[0], label ];
- },
- "continue": function(label) {
- return [ this[0], label ];
- },
- "conditional": function(cond, t, e) {
- return [ this[0], walk(cond), walk(t), walk(e) ];
- },
- "assign": function(op, lvalue, rvalue) {
- return [ this[0], op, walk(lvalue), walk(rvalue) ];
- },
- "dot": function(expr) {
- return [ this[0], walk(expr) ].concat(slice(arguments, 1));
- },
- "call": function(expr, args) {
- return [ this[0], walk(expr), MAP(args, walk) ];
- },
- "function": function(name, args, body) {
- return [ this[0], name, args.slice(), MAP(body, walk) ];
- },
- "defun": function(name, args, body) {
- return [ this[0], name, args.slice(), MAP(body, walk) ];
- },
- "if": function(conditional, t, e) {
- return [ this[0], walk(conditional), walk(t), walk(e) ];
- },
- "for": function(init, cond, step, block) {
- return [ this[0], walk(init), walk(cond), walk(step), walk(block) ];
- },
- "for-in": function(vvar, key, hash, block) {
- return [ this[0], walk(vvar), walk(key), walk(hash), walk(block) ];
- },
- "while": function(cond, block) {
- return [ this[0], walk(cond), walk(block) ];
- },
- "do": function(cond, block) {
- return [ this[0], walk(cond), walk(block) ];
- },
- "return": function(expr) {
- return [ this[0], walk(expr) ];
- },
- "binary": function(op, left, right) {
- return [ this[0], op, walk(left), walk(right) ];
- },
- "unary-prefix": function(op, expr) {
- return [ this[0], op, walk(expr) ];
- },
- "unary-postfix": function(op, expr) {
- return [ this[0], op, walk(expr) ];
- },
- "sub": function(expr, subscript) {
- return [ this[0], walk(expr), walk(subscript) ];
- },
- "object": function(props) {
- return [ this[0], MAP(props, function(p){
- return p.length == 2
- ? [ p[0], walk(p[1]) ]
- : [ p[0], walk(p[1]), p[2] ]; // get/set-ter
- }) ];
- },
- "regexp": function(rx, mods) {
- return [ this[0], rx, mods ];
- },
- "array": function(elements) {
- return [ this[0], MAP(elements, walk) ];
- },
- "stat": function(stat) {
- return [ this[0], walk(stat) ];
- },
- "seq": function() {
- return [ this[0] ].concat(MAP(slice(arguments), walk));
- },
- "label": function(name, block) {
- return [ this[0], name, walk(block) ];
- },
- "with": function(expr, block) {
- return [ this[0], walk(expr), walk(block) ];
- },
- "atom": function(name) {
- return [ this[0], name ];
- }
- };
-
- var user = {};
- var stack = [];
- function walk(ast) {
- if (ast == null)
- return null;
- try {
- stack.push(ast);
- var type = ast[0];
- var gen = user[type];
- if (gen) {
- var ret = gen.apply(ast, ast.slice(1));
- if (ret != null)
- return ret;
- }
- gen = walkers[type];
- return gen.apply(ast, ast.slice(1));
- } finally {
- stack.pop();
- }
- };
-
- function with_walkers(walkers, cont){
- var save = {}, i;
- for (i in walkers) if (HOP(walkers, i)) {
- save[i] = user[i];
- user[i] = walkers[i];
- }
- var ret = cont();
- for (i in save) if (HOP(save, i)) {
- if (!save[i]) delete user[i];
- else user[i] = save[i];
- }
- return ret;
- };
-
- return {
- walk: walk,
- with_walkers: with_walkers,
- parent: function() {
- return stack[stack.length - 2]; // last one is current node
- },
- stack: function() {
- return stack;
- }
- };
-};
-
-/* -----[ Scope and mangling ]----- */
-
-function Scope(parent) {
- this.names = {}; // names defined in this scope
- this.mangled = {}; // mangled names (orig.name => mangled)
- this.rev_mangled = {}; // reverse lookup (mangled => orig.name)
- this.cname = -1; // current mangled name
- this.refs = {}; // names referenced from this scope
- this.uses_with = false; // will become TRUE if with() is detected in this or any subscopes
- this.uses_eval = false; // will become TRUE if eval() is detected in this or any subscopes
- this.parent = parent; // parent scope
- this.children = []; // sub-scopes
- if (parent) {
- this.level = parent.level + 1;
- parent.children.push(this);
- } else {
- this.level = 0;
- }
-};
-
-var base54 = (function(){
- var DIGITS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_";
- return function(num) {
- var ret = "";
- do {
- ret = DIGITS.charAt(num % 54) + ret;
- num = Math.floor(num / 54);
- } while (num > 0);
- return ret;
- };
-})();
-
-Scope.prototype = {
- has: function(name) {
- for (var s = this; s; s = s.parent)
- if (HOP(s.names, name))
- return s;
- },
- has_mangled: function(mname) {
- for (var s = this; s; s = s.parent)
- if (HOP(s.rev_mangled, mname))
- return s;
- },
- toJSON: function() {
- return {
- names: this.names,
- uses_eval: this.uses_eval,
- uses_with: this.uses_with
- };
- },
-
- next_mangled: function() {
- // we must be careful that the new mangled name:
- //
- // 1. doesn't shadow a mangled name from a parent
- // scope, unless we don't reference the original
- // name from this scope OR from any sub-scopes!
- // This will get slow.
- //
- // 2. doesn't shadow an original name from a parent
- // scope, in the event that the name is not mangled
- // in the parent scope and we reference that name
- // here OR IN ANY SUBSCOPES!
- //
- // 3. doesn't shadow a name that is referenced but not
- // defined (possibly global defined elsewhere).
- for (;;) {
- var m = base54(++this.cname), prior;
-
- // case 1.
- prior = this.has_mangled(m);
- if (prior && this.refs[prior.rev_mangled[m]] === prior)
- continue;
-
- // case 2.
- prior = this.has(m);
- if (prior && prior !== this && this.refs[m] === prior && !prior.has_mangled(m))
- continue;
-
- // case 3.
- if (HOP(this.refs, m) && this.refs[m] == null)
- continue;
-
- // I got "do" once. :-/
- if (!is_identifier(m))
- continue;
-
- return m;
- }
- },
- get_mangled: function(name, newMangle) {
- if (this.uses_eval || this.uses_with) return name; // no mangle if eval or with is in use
- var s = this.has(name);
- if (!s) return name; // not in visible scope, no mangle
- if (HOP(s.mangled, name)) return s.mangled[name]; // already mangled in this scope
- if (!newMangle) return name; // not found and no mangling requested
-
- var m = s.next_mangled();
- s.rev_mangled[m] = name;
- return s.mangled[name] = m;
- },
- define: function(name) {
- if (name != null)
- return this.names[name] = name;
- }
-};
-
-function ast_add_scope(ast) {
-
- var current_scope = null;
- var w = ast_walker(), walk = w.walk;
- var having_eval = [];
-
- function with_new_scope(cont) {
- current_scope = new Scope(current_scope);
- var ret = current_scope.body = cont();
- ret.scope = current_scope;
- current_scope = current_scope.parent;
- return ret;
- };
-
- function define(name) {
- return current_scope.define(name);
- };
-
- function reference(name) {
- current_scope.refs[name] = true;
- };
-
- function _lambda(name, args, body) {
- var is_defun = this[0] == "defun";
- return [ this[0], is_defun ? define(name) : name, args, with_new_scope(function(){
- if (!is_defun) define(name);
- MAP(args, define);
- return MAP(body, walk);
- })];
- };
-
- return with_new_scope(function(){
- // process AST
- var ret = w.with_walkers({
- "function": _lambda,
- "defun": _lambda,
- "with": function(expr, block) {
- for (var s = current_scope; s; s = s.parent)
- s.uses_with = true;
- },
- "var": function(defs) {
- MAP(defs, function(d){ define(d[0]) });
- },
- "const": function(defs) {
- MAP(defs, function(d){ define(d[0]) });
- },
- "try": function(t, c, f) {
- if (c != null) return [
- this[0],
- MAP(t, walk),
- [ define(c[0]), MAP(c[1], walk) ],
- f != null ? MAP(f, walk) : null
- ];
- },
- "name": function(name) {
- if (name == "eval")
- having_eval.push(current_scope);
- reference(name);
- }
- }, function(){
- return walk(ast);
- });
-
- // the reason why we need an additional pass here is
- // that names can be used prior to their definition.
-
- // scopes where eval was detected and their parents
- // are marked with uses_eval, unless they define the
- // "eval" name.
- MAP(having_eval, function(scope){
- if (!scope.has("eval")) while (scope) {
- scope.uses_eval = true;
- scope = scope.parent;
- }
- });
-
- // for referenced names it might be useful to know
- // their origin scope. current_scope here is the
- // toplevel one.
- function fixrefs(scope, i) {
- // do children first; order shouldn't matter
- for (i = scope.children.length; --i >= 0;)
- fixrefs(scope.children[i]);
- for (i in scope.refs) if (HOP(scope.refs, i)) {
- // find origin scope and propagate the reference to origin
- for (var origin = scope.has(i), s = scope; s; s = s.parent) {
- s.refs[i] = origin;
- if (s === origin) break;
- }
- }
- };
- fixrefs(current_scope);
-
- return ret;
- });
-
-};
-
-/* -----[ mangle names ]----- */
-
-function ast_mangle(ast, options) {
- var w = ast_walker(), walk = w.walk, scope;
- options = options || {};
-
- function get_mangled(name, newMangle) {
- if (!options.toplevel && !scope.parent) return name; // don't mangle toplevel
- if (options.except && member(name, options.except))
- return name;
- return scope.get_mangled(name, newMangle);
- };
-
- function get_define(name) {
- // we always lookup a defined symbol for the current scope FIRST, so declared
- // vars trump a DEFINE symbol, but if no such var is found, then match a DEFINE value
- if (!scope.has(name)) {
- if (HOP(options.defines, name)) {
- return options.defines[name];
- }
- }
- return null;
- };
-
- function _lambda(name, args, body) {
- var is_defun = this[0] == "defun";
- if (is_defun && name) name = get_mangled(name);
- body = with_scope(body.scope, function(){
- if (!is_defun && name) name = get_mangled(name);
- args = MAP(args, function(name){ return get_mangled(name) });
- return MAP(body, walk);
- });
- return [ this[0], name, args, body ];
- };
-
- function with_scope(s, cont) {
- var _scope = scope;
- scope = s;
- for (var i in s.names) if (HOP(s.names, i)) {
- get_mangled(i, true);
- }
- var ret = cont();
- ret.scope = s;
- scope = _scope;
- return ret;
- };
-
- function _vardefs(defs) {
- return [ this[0], MAP(defs, function(d){
- return [ get_mangled(d[0]), walk(d[1]) ];
- }) ];
- };
-
- return w.with_walkers({
- "function": _lambda,
- "defun": function() {
- // move function declarations to the top when
- // they are not in some block.
- var ast = _lambda.apply(this, arguments);
- switch (w.parent()[0]) {
- case "toplevel":
- case "function":
- case "defun":
- return MAP.at_top(ast);
- }
- return ast;
- },
- "var": _vardefs,
- "const": _vardefs,
- "name": function(name) {
- return get_define(name) || [ this[0], get_mangled(name) ];
- },
- "try": function(t, c, f) {
- return [ this[0],
- MAP(t, walk),
- c != null ? [ get_mangled(c[0]), MAP(c[1], walk) ] : null,
- f != null ? MAP(f, walk) : null ];
- },
- "toplevel": function(body) {
- var self = this;
- return with_scope(self.scope, function(){
- return [ self[0], MAP(body, walk) ];
- });
- }
- }, function() {
- return walk(ast_add_scope(ast));
- });
-};
-
-/* -----[
- - compress foo["bar"] into foo.bar,
- - remove block brackets {} where possible
- - join consecutive var declarations
- - various optimizations for IFs:
- - if (cond) foo(); else bar(); ==> cond?foo():bar();
- - if (cond) foo(); ==> cond&&foo();
- - if (foo) return bar(); else return baz(); ==> return foo?bar():baz(); // also for throw
- - if (foo) return bar(); else something(); ==> {if(foo)return bar();something()}
- ]----- */
-
-var warn = function(){};
-
-function best_of(ast1, ast2) {
- return gen_code(ast1).length > gen_code(ast2[0] == "stat" ? ast2[1] : ast2).length ? ast2 : ast1;
-};
-
-function last_stat(b) {
- if (b[0] == "block" && b[1] && b[1].length > 0)
- return b[1][b[1].length - 1];
- return b;
-}
-
-function aborts(t) {
- if (t) {
- t = last_stat(t);
- if (t[0] == "return" || t[0] == "break" || t[0] == "continue" || t[0] == "throw")
- return true;
- }
-};
-
-function boolean_expr(expr) {
- return ( (expr[0] == "unary-prefix"
- && member(expr[1], [ "!", "delete" ])) ||
-
- (expr[0] == "binary"
- && member(expr[1], [ "in", "instanceof", "==", "!=", "===", "!==", "<", "<=", ">=", ">" ])) ||
-
- (expr[0] == "binary"
- && member(expr[1], [ "&&", "||" ])
- && boolean_expr(expr[2])
- && boolean_expr(expr[3])) ||
-
- (expr[0] == "conditional"
- && boolean_expr(expr[2])
- && boolean_expr(expr[3])) ||
-
- (expr[0] == "assign"
- && expr[1] === true
- && boolean_expr(expr[3])) ||
-
- (expr[0] == "seq"
- && boolean_expr(expr[expr.length - 1]))
- );
-};
-
-function make_conditional(c, t, e) {
- var make_real_conditional = function() {
- if (c[0] == "unary-prefix" && c[1] == "!") {
- return e ? [ "conditional", c[2], e, t ] : [ "binary", "||", c[2], t ];
- } else {
- return e ? [ "conditional", c, t, e ] : [ "binary", "&&", c, t ];
- }
- };
- // shortcut the conditional if the expression has a constant value
- return when_constant(c, function(ast, val){
- warn_unreachable(val ? e : t);
- return (val ? t : e);
- }, make_real_conditional);
-};
-
-function empty(b) {
- return !b || (b[0] == "block" && (!b[1] || b[1].length == 0));
-};
-
-function is_string(node) {
- return (node[0] == "string" ||
- node[0] == "unary-prefix" && node[1] == "typeof" ||
- node[0] == "binary" && node[1] == "+" &&
- (is_string(node[2]) || is_string(node[3])));
-};
-
-var when_constant = (function(){
-
- var $NOT_CONSTANT = {};
-
- // this can only evaluate constant expressions. If it finds anything
- // not constant, it throws $NOT_CONSTANT.
- function evaluate(expr) {
- switch (expr[0]) {
- case "string":
- case "num":
- return expr[1];
- case "name":
- case "atom":
- switch (expr[1]) {
- case "true": return true;
- case "false": return false;
- }
- break;
- case "unary-prefix":
- switch (expr[1]) {
- case "!": return !evaluate(expr[2]);
- case "typeof": return typeof evaluate(expr[2]);
- case "~": return ~evaluate(expr[2]);
- case "-": return -evaluate(expr[2]);
- case "+": return +evaluate(expr[2]);
- }
- break;
- case "binary":
- var left = expr[2], right = expr[3];
- switch (expr[1]) {
- case "&&" : return evaluate(left) && evaluate(right);
- case "||" : return evaluate(left) || evaluate(right);
- case "|" : return evaluate(left) | evaluate(right);
- case "&" : return evaluate(left) & evaluate(right);
- case "^" : return evaluate(left) ^ evaluate(right);
- case "+" : return evaluate(left) + evaluate(right);
- case "*" : return evaluate(left) * evaluate(right);
- case "/" : return evaluate(left) / evaluate(right);
- case "-" : return evaluate(left) - evaluate(right);
- case "<<" : return evaluate(left) << evaluate(right);
- case ">>" : return evaluate(left) >> evaluate(right);
- case ">>>" : return evaluate(left) >>> evaluate(right);
- case "==" : return evaluate(left) == evaluate(right);
- case "===" : return evaluate(left) === evaluate(right);
- case "!=" : return evaluate(left) != evaluate(right);
- case "!==" : return evaluate(left) !== evaluate(right);
- case "<" : return evaluate(left) < evaluate(right);
- case "<=" : return evaluate(left) <= evaluate(right);
- case ">" : return evaluate(left) > evaluate(right);
- case ">=" : return evaluate(left) >= evaluate(right);
- case "in" : return evaluate(left) in evaluate(right);
- case "instanceof" : return evaluate(left) instanceof evaluate(right);
- }
- }
- throw $NOT_CONSTANT;
- };
-
- return function(expr, yes, no) {
- try {
- var val = evaluate(expr), ast;
- switch (typeof val) {
- case "string": ast = [ "string", val ]; break;
- case "number": ast = [ "num", val ]; break;
- case "boolean": ast = [ "name", String(val) ]; break;
- default: throw new Error("Can't handle constant of type: " + (typeof val));
- }
- return yes.call(expr, ast, val);
- } catch(ex) {
- if (ex === $NOT_CONSTANT) {
- if (expr[0] == "binary"
- && (expr[1] == "===" || expr[1] == "!==")
- && ((is_string(expr[2]) && is_string(expr[3]))
- || (boolean_expr(expr[2]) && boolean_expr(expr[3])))) {
- expr[1] = expr[1].substr(0, 2);
- }
- else if (no && expr[0] == "binary"
- && (expr[1] == "||" || expr[1] == "&&")) {
- // the whole expression is not constant but the lval may be...
- try {
- var lval = evaluate(expr[2]);
- expr = ((expr[1] == "&&" && (lval ? expr[3] : lval)) ||
- (expr[1] == "||" && (lval ? lval : expr[3])) ||
- expr);
- } catch(ex2) {
- // IGNORE... lval is not constant
- }
- }
- return no ? no.call(expr, expr) : null;
- }
- else throw ex;
- }
- };
-
-})();
-
-function warn_unreachable(ast) {
- if (!empty(ast))
- warn("Dropping unreachable code: " + gen_code(ast, true));
-};
-
-function ast_squeeze(ast, options) {
- options = defaults(options, {
- make_seqs : true,
- dead_code : true,
- keep_comps : true,
- no_warnings : false
- });
-
- var w = ast_walker(), walk = w.walk, scope;
-
- function negate(c) {
- var not_c = [ "unary-prefix", "!", c ];
- switch (c[0]) {
- case "unary-prefix":
- return c[1] == "!" && boolean_expr(c[2]) ? c[2] : not_c;
- case "seq":
- c = slice(c);
- c[c.length - 1] = negate(c[c.length - 1]);
- return c;
- case "conditional":
- return best_of(not_c, [ "conditional", c[1], negate(c[2]), negate(c[3]) ]);
- case "binary":
- var op = c[1], left = c[2], right = c[3];
- if (!options.keep_comps) switch (op) {
- case "<=" : return [ "binary", ">", left, right ];
- case "<" : return [ "binary", ">=", left, right ];
- case ">=" : return [ "binary", "<", left, right ];
- case ">" : return [ "binary", "<=", left, right ];
- }
- switch (op) {
- case "==" : return [ "binary", "!=", left, right ];
- case "!=" : return [ "binary", "==", left, right ];
- case "===" : return [ "binary", "!==", left, right ];
- case "!==" : return [ "binary", "===", left, right ];
- case "&&" : return best_of(not_c, [ "binary", "||", negate(left), negate(right) ]);
- case "||" : return best_of(not_c, [ "binary", "&&", negate(left), negate(right) ]);
- }
- break;
- }
- return not_c;
- };
-
- function with_scope(s, cont) {
- var _scope = scope;
- scope = s;
- var ret = cont();
- ret.scope = s;
- scope = _scope;
- return ret;
- };
-
- function rmblock(block) {
- if (block != null && block[0] == "block" && block[1]) {
- if (block[1].length == 1)
- block = block[1][0];
- else if (block[1].length == 0)
- block = [ "block" ];
- }
- return block;
- };
-
- function _lambda(name, args, body) {
- var is_defun = this[0] == "defun";
- body = with_scope(body.scope, function(){
- var ret = tighten(MAP(body, walk), "lambda");
- if (!is_defun && name && !HOP(scope.refs, name))
- name = null;
- return ret;
- });
- return [ this[0], name, args, body ];
- };
-
- // we get here for blocks that have been already transformed.
- // this function does a few things:
- // 1. discard useless blocks
- // 2. join consecutive var declarations
- // 3. remove obviously dead code
- // 4. transform consecutive statements using the comma operator
- // 5. if block_type == "lambda" and it detects constructs like if(foo) return ... - rewrite like if (!foo) { ... }
- function tighten(statements, block_type) {
- statements = statements.reduce(function(a, stat){
- if (stat[0] == "block") {
- if (stat[1]) {
- a.push.apply(a, stat[1]);
- }
- } else {
- a.push(stat);
- }
- return a;
- }, []);
-
- statements = (function(a, prev){
- statements.forEach(function(cur){
- if (prev && ((cur[0] == "var" && prev[0] == "var") ||
- (cur[0] == "const" && prev[0] == "const"))) {
- prev[1] = prev[1].concat(cur[1]);
- } else {
- a.push(cur);
- prev = cur;
- }
- });
- return a;
- })([]);
-
- if (options.dead_code) statements = (function(a, has_quit){
- statements.forEach(function(st){
- if (has_quit) {
- if (member(st[0], [ "function", "defun" , "var", "const" ])) {
- a.push(st);
- }
- else if (!options.no_warnings)
- warn_unreachable(st);
- }
- else {
- a.push(st);
- if (member(st[0], [ "return", "throw", "break", "continue" ]))
- has_quit = true;
- }
- });
- return a;
- })([]);
-
- if (options.make_seqs) statements = (function(a, prev) {
- statements.forEach(function(cur){
- if (prev && prev[0] == "stat" && cur[0] == "stat") {
- prev[1] = [ "seq", prev[1], cur[1] ];
- } else {
- a.push(cur);
- prev = cur;
- }
- });
- return a;
- })([]);
-
- if (block_type == "lambda") statements = (function(i, a, stat){
- while (i < statements.length) {
- stat = statements[i++];
- if (stat[0] == "if" && !stat[3]) {
- if (stat[2][0] == "return" && stat[2][1] == null) {
- a.push(make_if(negate(stat[1]), [ "block", statements.slice(i) ]));
- break;
- }
- var last = last_stat(stat[2]);
- if (last[0] == "return" && last[1] == null) {
- a.push(make_if(stat[1], [ "block", stat[2][1].slice(0, -1) ], [ "block", statements.slice(i) ]));
- break;
- }
- }
- a.push(stat);
- }
- return a;
- })(0, []);
-
- return statements;
- };
-
- function make_if(c, t, e) {
- return when_constant(c, function(ast, val){
- if (val) {
- warn_unreachable(e);
- return t;
- } else {
- warn_unreachable(t);
- return e;
- }
- }, function() {
- return make_real_if(c, t, e);
- });
- };
-
- function make_real_if(c, t, e) {
- c = walk(c);
- t = walk(t);
- e = walk(e);
-
- if (empty(t)) {
- c = negate(c);
- t = e;
- e = null;
- } else if (empty(e)) {
- e = null;
- } else {
- // if we have both else and then, maybe it makes sense to switch them?
- (function(){
- var a = gen_code(c);
- var n = negate(c);
- var b = gen_code(n);
- if (b.length < a.length) {
- var tmp = t;
- t = e;
- e = tmp;
- c = n;
- }
- })();
- }
- if (empty(e) && empty(t))
- return [ "stat", c ];
- var ret = [ "if", c, t, e ];
- if (t[0] == "if" && empty(t[3]) && empty(e)) {
- ret = best_of(ret, walk([ "if", [ "binary", "&&", c, t[1] ], t[2] ]));
- }
- else if (t[0] == "stat") {
- if (e) {
- if (e[0] == "stat") {
- ret = best_of(ret, [ "stat", make_conditional(c, t[1], e[1]) ]);
- }
- }
- else {
- ret = best_of(ret, [ "stat", make_conditional(c, t[1]) ]);
- }
- }
- else if (e && t[0] == e[0] && (t[0] == "return" || t[0] == "throw") && t[1] && e[1]) {
- ret = best_of(ret, [ t[0], make_conditional(c, t[1], e[1] ) ]);
- }
- else if (e && aborts(t)) {
- ret = [ [ "if", c, t ] ];
- if (e[0] == "block") {
- if (e[1]) ret = ret.concat(e[1]);
- }
- else {
- ret.push(e);
- }
- ret = walk([ "block", ret ]);
- }
- else if (t && aborts(e)) {
- ret = [ [ "if", negate(c), e ] ];
- if (t[0] == "block") {
- if (t[1]) ret = ret.concat(t[1]);
- } else {
- ret.push(t);
- }
- ret = walk([ "block", ret ]);
- }
- return ret;
- };
-
- function _do_while(cond, body) {
- return when_constant(cond, function(cond, val){
- if (!val) {
- warn_unreachable(body);
- return [ "block" ];
- } else {
- return [ "for", null, null, null, walk(body) ];
- }
- });
- };
-
- return w.with_walkers({
- "sub": function(expr, subscript) {
- if (subscript[0] == "string") {
- var name = subscript[1];
- if (is_identifier(name))
- return [ "dot", walk(expr), name ];
- else if (/^[1-9][0-9]*$/.test(name) || name === "0")
- return [ "sub", walk(expr), [ "num", parseInt(name, 10) ] ];
- }
- },
- "if": make_if,
- "toplevel": function(body) {
- return [ "toplevel", with_scope(this.scope, function(){
- return tighten(MAP(body, walk));
- }) ];
- },
- "switch": function(expr, body) {
- var last = body.length - 1;
- return [ "switch", walk(expr), MAP(body, function(branch, i){
- var block = tighten(MAP(branch[1], walk));
- if (i == last && block.length > 0) {
- var node = block[block.length - 1];
- if (node[0] == "break" && !node[1])
- block.pop();
- }
- return [ branch[0] ? walk(branch[0]) : null, block ];
- }) ];
- },
- "function": _lambda,
- "defun": _lambda,
- "block": function(body) {
- if (body) return rmblock([ "block", tighten(MAP(body, walk)) ]);
- },
- "binary": function(op, left, right) {
- return when_constant([ "binary", op, walk(left), walk(right) ], function yes(c){
- return best_of(walk(c), this);
- }, function no() {
- return this;
- });
- },
- "conditional": function(c, t, e) {
- return make_conditional(walk(c), walk(t), walk(e));
- },
- "try": function(t, c, f) {
- return [
- "try",
- tighten(MAP(t, walk)),
- c != null ? [ c[0], tighten(MAP(c[1], walk)) ] : null,
- f != null ? tighten(MAP(f, walk)) : null
- ];
- },
- "unary-prefix": function(op, expr) {
- expr = walk(expr);
- var ret = [ "unary-prefix", op, expr ];
- if (op == "!")
- ret = best_of(ret, negate(expr));
- return when_constant(ret, function(ast, val){
- return walk(ast); // it's either true or false, so minifies to !0 or !1
- }, function() { return ret });
- },
- "name": function(name) {
- switch (name) {
- case "true": return [ "unary-prefix", "!", [ "num", 0 ]];
- case "false": return [ "unary-prefix", "!", [ "num", 1 ]];
- }
- },
- "new": function(ctor, args) {
- if (ctor[0] == "name" && ctor[1] == "Array" && !scope.has("Array")) {
- if (args.length != 1) {
- return [ "array", args ];
- } else {
- return [ "call", [ "name", "Array" ], args ];
- }
- }
- },
- "call": function(expr, args) {
- if (expr[0] == "name" && expr[1] == "Array" && args.length != 1 && !scope.has("Array")) {
- return [ "array", args ];
- }
- },
- "while": _do_while,
- "do": _do_while
- }, function() {
- return walk(ast_add_scope(ast));
- });
-};
-
-/* -----[ re-generate code from the AST ]----- */
-
-var DOT_CALL_NO_PARENS = jsp.array_to_hash([
- "name",
- "array",
- "object",
- "string",
- "dot",
- "sub",
- "call",
- "regexp"
-]);
-
-function make_string(str, ascii_only) {
- var dq = 0, sq = 0;
- str = str.replace(/[\\\b\f\n\r\t\x22\x27\u2028\u2029]/g, function(s){
- switch (s) {
- case "\\": return "\\\\";
- case "\b": return "\\b";
- case "\f": return "\\f";
- case "\n": return "\\n";
- case "\r": return "\\r";
- case "\t": return "\\t";
- case "\u2028": return "\\u2028";
- case "\u2029": return "\\u2029";
- case '"': ++dq; return '"';
- case "'": ++sq; return "'";
- }
- return s;
- });
- if (ascii_only) str = to_ascii(str);
- if (dq > sq) return "'" + str.replace(/\x27/g, "\\'") + "'";
- else return '"' + str.replace(/\x22/g, '\\"') + '"';
-};
-
-function to_ascii(str) {
- return str.replace(/[\u0080-\uffff]/g, function(ch) {
- var code = ch.charCodeAt(0).toString(16);
- while (code.length < 4) code = "0" + code;
- return "\\u" + code;
- });
-};
-
-var SPLICE_NEEDS_BRACKETS = jsp.array_to_hash([ "if", "while", "do", "for", "for-in", "with" ]);
-
-function gen_code(ast, options) {
- options = defaults(options, {
- indent_start : 0,
- indent_level : 4,
- quote_keys : false,
- space_colon : false,
- beautify : false,
- ascii_only : false
- });
- var beautify = !!options.beautify;
- var indentation = 0,
- newline = beautify ? "\n" : "",
- space = beautify ? " " : "";
-
- function encode_string(str) {
- return make_string(str, options.ascii_only);
- };
-
- function make_name(name) {
- name = name.toString();
- if (options.ascii_only)
- name = to_ascii(name);
- return name;
- };
-
- function indent(line) {
- if (line == null)
- line = "";
- if (beautify)
- line = repeat_string(" ", options.indent_start + indentation * options.indent_level) + line;
- return line;
- };
-
- function with_indent(cont, incr) {
- if (incr == null) incr = 1;
- indentation += incr;
- try { return cont.apply(null, slice(arguments, 1)); }
- finally { indentation -= incr; }
- };
-
- function add_spaces(a) {
- if (beautify)
- return a.join(" ");
- var b = [];
- for (var i = 0; i < a.length; ++i) {
- var next = a[i + 1];
- b.push(a[i]);
- if (next &&
- ((/[a-z0-9_\x24]$/i.test(a[i].toString()) && /^[a-z0-9_\x24]/i.test(next.toString())) ||
- (/[\+\-]$/.test(a[i].toString()) && /^[\+\-]/.test(next.toString())))) {
- b.push(" ");
- }
- }
- return b.join("");
- };
-
- function add_commas(a) {
- return a.join("," + space);
- };
-
- function parenthesize(expr) {
- var gen = make(expr);
- for (var i = 1; i < arguments.length; ++i) {
- var el = arguments[i];
- if ((el instanceof Function && el(expr)) || expr[0] == el)
- return "(" + gen + ")";
- }
- return gen;
- };
-
- function best_of(a) {
- if (a.length == 1) {
- return a[0];
- }
- if (a.length == 2) {
- var b = a[1];
- a = a[0];
- return a.length <= b.length ? a : b;
- }
- return best_of([ a[0], best_of(a.slice(1)) ]);
- };
-
- function needs_parens(expr) {
- if (expr[0] == "function" || expr[0] == "object") {
- // dot/call on a literal function requires the
- // function literal itself to be parenthesized
- // only if it's the first "thing" in a
- // statement. This means that the parent is
- // "stat", but it could also be a "seq" and
- // we're the first in this "seq" and the
- // parent is "stat", and so on. Messy stuff,
- // but it worths the trouble.
- var a = slice($stack), self = a.pop(), p = a.pop();
- while (p) {
- if (p[0] == "stat") return true;
- if (((p[0] == "seq" || p[0] == "call" || p[0] == "dot" || p[0] == "sub" || p[0] == "conditional") && p[1] === self) ||
- ((p[0] == "binary" || p[0] == "assign" || p[0] == "unary-postfix") && p[2] === self)) {
- self = p;
- p = a.pop();
- } else {
- return false;
- }
- }
- }
- return !HOP(DOT_CALL_NO_PARENS, expr[0]);
- };
-
- function make_num(num) {
- var str = num.toString(10), a = [ str.replace(/^0\./, ".") ], m;
- if (Math.floor(num) === num) {
- a.push("0x" + num.toString(16).toLowerCase(), // probably pointless
- "0" + num.toString(8)); // same.
- if ((m = /^(.*?)(0+)$/.exec(num))) {
- a.push(m[1] + "e" + m[2].length);
- }
- } else if ((m = /^0?\.(0+)(.*)$/.exec(num))) {
- a.push(m[2] + "e-" + (m[1].length + m[2].length),
- str.substr(str.indexOf(".")));
- }
- return best_of(a);
- };
-
- var generators = {
- "string": encode_string,
- "num": make_num,
- "name": make_name,
- "toplevel": function(statements) {
- return make_block_statements(statements)
- .join(newline + newline);
- },
- "splice": function(statements) {
- var parent = $stack[$stack.length - 2][0];
- if (HOP(SPLICE_NEEDS_BRACKETS, parent)) {
- // we need block brackets in this case
- return make_block.apply(this, arguments);
- } else {
- return MAP(make_block_statements(statements, true),
- function(line, i) {
- // the first line is already indented
- return i > 0 ? indent(line) : line;
- }).join(newline);
- }
- },
- "block": make_block,
- "var": function(defs) {
- return "var " + add_commas(MAP(defs, make_1vardef)) + ";";
- },
- "const": function(defs) {
- return "const " + add_commas(MAP(defs, make_1vardef)) + ";";
- },
- "try": function(tr, ca, fi) {
- var out = [ "try", make_block(tr) ];
- if (ca) out.push("catch", "(" + ca[0] + ")", make_block(ca[1]));
- if (fi) out.push("finally", make_block(fi));
- return add_spaces(out);
- },
- "throw": function(expr) {
- return add_spaces([ "throw", make(expr) ]) + ";";
- },
- "new": function(ctor, args) {
- args = args.length > 0 ? "(" + add_commas(MAP(args, make)) + ")" : "";
- return add_spaces([ "new", parenthesize(ctor, "seq", "binary", "conditional", "assign", function(expr){
- var w = ast_walker(), has_call = {};
- try {
- w.with_walkers({
- "call": function() { throw has_call },
- "function": function() { return this }
- }, function(){
- w.walk(expr);
- });
- } catch(ex) {
- if (ex === has_call)
- return true;
- throw ex;
- }
- }) + args ]);
- },
- "switch": function(expr, body) {
- return add_spaces([ "switch", "(" + make(expr) + ")", make_switch_block(body) ]);
- },
- "break": function(label) {
- var out = "break";
- if (label != null)
- out += " " + make_name(label);
- return out + ";";
- },
- "continue": function(label) {
- var out = "continue";
- if (label != null)
- out += " " + make_name(label);
- return out + ";";
- },
- "conditional": function(co, th, el) {
- return add_spaces([ parenthesize(co, "assign", "seq", "conditional"), "?",
- parenthesize(th, "seq"), ":",
- parenthesize(el, "seq") ]);
- },
- "assign": function(op, lvalue, rvalue) {
- if (op && op !== true) op += "=";
- else op = "=";
- return add_spaces([ make(lvalue), op, parenthesize(rvalue, "seq") ]);
- },
- "dot": function(expr) {
- var out = make(expr), i = 1;
- if (expr[0] == "num") {
- if (!/\./.test(expr[1]))
- out += ".";
- } else if (needs_parens(expr))
- out = "(" + out + ")";
- while (i < arguments.length)
- out += "." + make_name(arguments[i++]);
- return out;
- },
- "call": function(func, args) {
- var f = make(func);
- if (needs_parens(func))
- f = "(" + f + ")";
- return f + "(" + add_commas(MAP(args, function(expr){
- return parenthesize(expr, "seq");
- })) + ")";
- },
- "function": make_function,
- "defun": make_function,
- "if": function(co, th, el) {
- var out = [ "if", "(" + make(co) + ")", el ? make_then(th) : make(th) ];
- if (el) {
- out.push("else", make(el));
- }
- return add_spaces(out);
- },
- "for": function(init, cond, step, block) {
- var out = [ "for" ];
- init = (init != null ? make(init) : "").replace(/;*\s*$/, ";" + space);
- cond = (cond != null ? make(cond) : "").replace(/;*\s*$/, ";" + space);
- step = (step != null ? make(step) : "").replace(/;*\s*$/, "");
- var args = init + cond + step;
- if (args == "; ; ") args = ";;";
- out.push("(" + args + ")", make(block));
- return add_spaces(out);
- },
- "for-in": function(vvar, key, hash, block) {
- return add_spaces([ "for", "(" +
- (vvar ? make(vvar).replace(/;+$/, "") : make(key)),
- "in",
- make(hash) + ")", make(block) ]);
- },
- "while": function(condition, block) {
- return add_spaces([ "while", "(" + make(condition) + ")", make(block) ]);
- },
- "do": function(condition, block) {
- return add_spaces([ "do", make(block), "while", "(" + make(condition) + ")" ]) + ";";
- },
- "return": function(expr) {
- var out = [ "return" ];
- if (expr != null) out.push(make(expr));
- return add_spaces(out) + ";";
- },
- "binary": function(operator, lvalue, rvalue) {
- var left = make(lvalue), right = make(rvalue);
- // XXX: I'm pretty sure other cases will bite here.
- // we need to be smarter.
- // adding parens all the time is the safest bet.
- if (member(lvalue[0], [ "assign", "conditional", "seq" ]) ||
- lvalue[0] == "binary" && PRECEDENCE[operator] > PRECEDENCE[lvalue[1]]) {
- left = "(" + left + ")";
- }
- if (member(rvalue[0], [ "assign", "conditional", "seq" ]) ||
- rvalue[0] == "binary" && PRECEDENCE[operator] >= PRECEDENCE[rvalue[1]] &&
- !(rvalue[1] == operator && member(operator, [ "&&", "||", "*" ]))) {
- right = "(" + right + ")";
- }
- return add_spaces([ left, operator, right ]);
- },
- "unary-prefix": function(operator, expr) {
- var val = make(expr);
- if (!(expr[0] == "num" || (expr[0] == "unary-prefix" && !HOP(OPERATORS, operator + expr[1])) || !needs_parens(expr)))
- val = "(" + val + ")";
- return operator + (jsp.is_alphanumeric_char(operator.charAt(0)) ? " " : "") + val;
- },
- "unary-postfix": function(operator, expr) {
- var val = make(expr);
- if (!(expr[0] == "num" || (expr[0] == "unary-postfix" && !HOP(OPERATORS, operator + expr[1])) || !needs_parens(expr)))
- val = "(" + val + ")";
- return val + operator;
- },
- "sub": function(expr, subscript) {
- var hash = make(expr);
- if (needs_parens(expr))
- hash = "(" + hash + ")";
- return hash + "[" + make(subscript) + "]";
- },
- "object": function(props) {
- if (props.length == 0)
- return "{}";
- return "{" + newline + with_indent(function(){
- return MAP(props, function(p){
- if (p.length == 3) {
- // getter/setter. The name is in p[0], the arg.list in p[1][2], the
- // body in p[1][3] and type ("get" / "set") in p[2].
- return indent(make_function(p[0], p[1][2], p[1][3], p[2]));
- }
- var key = p[0], val = make(p[1]);
- if (options.quote_keys) {
- key = encode_string(key);
- } else if ((typeof key == "number" || !beautify && +key + "" == key)
- && parseFloat(key) >= 0) {
- key = make_num(+key);
- } else if (!is_identifier(key)) {
- key = encode_string(key);
- }
- return indent(add_spaces(beautify && options.space_colon
- ? [ key, ":", val ]
- : [ key + ":", val ]));
- }).join("," + newline);
- }) + newline + indent("}");
- },
- "regexp": function(rx, mods) {
- return "/" + rx + "/" + mods;
- },
- "array": function(elements) {
- if (elements.length == 0) return "[]";
- return add_spaces([ "[", add_commas(MAP(elements, function(el){
- if (!beautify && el[0] == "atom" && el[1] == "undefined") return "";
- return parenthesize(el, "seq");
- })), "]" ]);
- },
- "stat": function(stmt) {
- return make(stmt).replace(/;*\s*$/, ";");
- },
- "seq": function() {
- return add_commas(MAP(slice(arguments), make));
- },
- "label": function(name, block) {
- return add_spaces([ make_name(name), ":", make(block) ]);
- },
- "with": function(expr, block) {
- return add_spaces([ "with", "(" + make(expr) + ")", make(block) ]);
- },
- "atom": function(name) {
- return make_name(name);
- }
- };
-
- // The squeezer replaces "block"-s that contain only a single
- // statement with the statement itself; technically, the AST
- // is correct, but this can create problems when we output an
- // IF having an ELSE clause where the THEN clause ends in an
- // IF *without* an ELSE block (then the outer ELSE would refer
- // to the inner IF). This function checks for this case and
- // adds the block brackets if needed.
- function make_then(th) {
- if (th[0] == "do") {
- // https://github.com/mishoo/UglifyJS/issues/#issue/57
- // IE croaks with "syntax error" on code like this:
- // if (foo) do ... while(cond); else ...
- // we need block brackets around do/while
- return make([ "block", [ th ]]);
- }
- var b = th;
- while (true) {
- var type = b[0];
- if (type == "if") {
- if (!b[3])
- // no else, we must add the block
- return make([ "block", [ th ]]);
- b = b[3];
- }
- else if (type == "while" || type == "do") b = b[2];
- else if (type == "for" || type == "for-in") b = b[4];
- else break;
- }
- return make(th);
- };
-
- function make_function(name, args, body, keyword) {
- var out = keyword || "function";
- if (name) {
- out += " " + make_name(name);
- }
- out += "(" + add_commas(MAP(args, make_name)) + ")";
- return add_spaces([ out, make_block(body) ]);
- };
-
- function make_block_statements(statements, noindent) {
- for (var a = [], last = statements.length - 1, i = 0; i <= last; ++i) {
- var stat = statements[i];
- var code = make(stat);
- if (code != ";") {
- if (!beautify && i == last) {
- if ((stat[0] == "while" && empty(stat[2])) ||
- (member(stat[0], [ "for", "for-in"] ) && empty(stat[4])) ||
- (stat[0] == "if" && empty(stat[2]) && !stat[3]) ||
- (stat[0] == "if" && stat[3] && empty(stat[3]))) {
- code = code.replace(/;*\s*$/, ";");
- } else {
- code = code.replace(/;+\s*$/, "");
- }
- }
- a.push(code);
- }
- }
- return noindent ? a : MAP(a, indent);
- };
-
- function make_switch_block(body) {
- var n = body.length;
- if (n == 0) return "{}";
- return "{" + newline + MAP(body, function(branch, i){
- var has_body = branch[1].length > 0, code = with_indent(function(){
- return indent(branch[0]
- ? add_spaces([ "case", make(branch[0]) + ":" ])
- : "default:");
- }, 0.5) + (has_body ? newline + with_indent(function(){
- return make_block_statements(branch[1]).join(newline);
- }) : "");
- if (!beautify && has_body && i < n - 1)
- code += ";";
- return code;
- }).join(newline) + newline + indent("}");
- };
-
- function make_block(statements) {
- if (!statements) return ";";
- if (statements.length == 0) return "{}";
- return "{" + newline + with_indent(function(){
- return make_block_statements(statements).join(newline);
- }) + newline + indent("}");
- };
-
- function make_1vardef(def) {
- var name = def[0], val = def[1];
- if (val != null)
- name = add_spaces([ make_name(name), "=", parenthesize(val, "seq") ]);
- return name;
- };
-
- var $stack = [];
-
- function make(node) {
- var type = node[0];
- var gen = generators[type];
- if (!gen)
- throw new Error("Can't find generator for \"" + type + "\"");
- $stack.push(node);
- var ret = gen.apply(type, node.slice(1));
- $stack.pop();
- return ret;
- };
-
- return make(ast);
-};
-
-function split_lines(code, max_line_length) {
- var splits = [ 0 ];
- jsp.parse(function(){
- var next_token = jsp.tokenizer(code);
- var last_split = 0;
- var prev_token;
- function current_length(tok) {
- return tok.pos - last_split;
- };
- function split_here(tok) {
- last_split = tok.pos;
- splits.push(last_split);
- };
- function custom(){
- var tok = next_token.apply(this, arguments);
- out: {
- if (prev_token) {
- if (prev_token.type == "keyword") break out;
- }
- if (current_length(tok) > max_line_length) {
- switch (tok.type) {
- case "keyword":
- case "atom":
- case "name":
- case "punc":
- split_here(tok);
- break out;
- }
- }
- }
- prev_token = tok;
- return tok;
- };
- custom.context = function() {
- return next_token.context.apply(this, arguments);
- };
- return custom;
- }());
- return splits.map(function(pos, i){
- return code.substring(pos, splits[i + 1] || code.length);
- }).join("\n");
-};
-
-/* -----[ Utilities ]----- */
-
-function repeat_string(str, i) {
- if (i <= 0) return "";
- if (i == 1) return str;
- var d = repeat_string(str, i >> 1);
- d += d;
- if (i & 1) d += str;
- return d;
-};
-
-function defaults(args, defs) {
- var ret = {};
- if (args === true)
- args = {};
- for (var i in defs) if (HOP(defs, i)) {
- ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
- }
- return ret;
-};
-
-function is_identifier(name) {
- return /^[a-z_$][a-z0-9_$]*$/i.test(name)
- && name != "this"
- && !HOP(jsp.KEYWORDS_ATOM, name)
- && !HOP(jsp.RESERVED_WORDS, name)
- && !HOP(jsp.KEYWORDS, name);
-};
-
-function HOP(obj, prop) {
- return Object.prototype.hasOwnProperty.call(obj, prop);
-};
-
-// some utilities
-
-var MAP;
-
-(function(){
- MAP = function(a, f, o) {
- var ret = [];
- for (var i = 0; i < a.length; ++i) {
- var val = f.call(o, a[i], i);
- if (val instanceof AtTop) ret.unshift(val.v);
- else ret.push(val);
- }
- return ret;
- };
- MAP.at_top = function(val) { return new AtTop(val) };
- function AtTop(val) { this.v = val };
-})();
-
-/* -----[ Exports ]----- */
-
-exports.ast_walker = ast_walker;
-exports.ast_mangle = ast_mangle;
-exports.ast_squeeze = ast_squeeze;
-exports.gen_code = gen_code;
-exports.ast_add_scope = ast_add_scope;
-exports.set_logger = function(logger) { warn = logger };
-exports.make_string = make_string;
-exports.split_lines = split_lines;
-exports.MAP = MAP;
-
-// keep this last!
-exports.ast_squeeze_more = require("./squeeze-more").ast_squeeze_more;
projects / jquery-ui.git / commitdiff