diff --git a/CHANGELOG.md b/CHANGELOG.md index 7b3a7c06..f290905c 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,19 +1,18 @@ -# 1.5.0 Beta 4 +# 1.5.0 -2013-10-04 +2013-10-21 - sourcemap support - support for import inline option to include css that you do NOT want less to parse e.g. `@import (inline) "file.css";` - better support for modifyVars (refresh styles with new variables, using a file cache), is now more resiliant - support for import reference option to reference external css, but not output it. Any mixin calls or extend's will be output. - support for guards on selectors (currently only if you have a single selector) + - allow property merging through the +: syntax - Added min/max functions - Added length function and improved extract to work with comma seperated values - when using import multiple, sub imports are imported multiple times into final output - fix bad spaces between namespace operators - do not compress comment if it begins with an exclamation mark - - change to not throw exceptions in toCSS - always return an error object - - allow property merging through the +: syntax - Fix the saturate function to pass through when using the CSS syntax - Added svg-gradient function - Added no-js option to lessc (in browser, use javascriptEnabled: false) which disallows JavaScript in less files @@ -23,7 +22,7 @@ - Browser: added logLevel option to control logging (2 = everything, 1 = errors only, 0 = no logging) - Browser: added errorReporting option which can be "html" (default) or "console" or a function - Now uses grunt for building and testing - - A few bug fixes for media queries, extends, scoping, compression + - A few bug fixes for media queries, extends, scoping, compression and import once. # 1.4.2 diff --git a/dist/less-1.5.0.js b/dist/less-1.5.0.js new file mode 100644 index 00000000..32af5b41 --- /dev/null +++ b/dist/less-1.5.0.js @@ -0,0 +1,6914 @@ +/*! + * LESS - Leaner CSS v1.5.0 + * http://lesscss.org + * + * Copyright (c) 2009-2013, Alexis Sellier + * Licensed under the Apache v2 License. + * + * @licence + */ + + + +(function (window, undefined) {// +// Stub out `require` in the browser +// +function require(arg) { + return window.less[arg.split('/')[1]]; +}; + + +if (typeof(window.less) === 'undefined' || typeof(window.less.nodeType) !== 'undefined') { window.less = {}; } +less = window.less; +tree = window.less.tree = {}; +less.mode = 'browser'; + +var less, tree; + +// Node.js does not have a header file added which defines less +if (less === undefined) { + less = exports; + tree = require('./tree'); + less.mode = 'node'; +} +// +// less.js - parser +// +// A relatively straight-forward predictive parser. +// There is no tokenization/lexing stage, the input is parsed +// in one sweep. +// +// To make the parser fast enough to run in the browser, several +// optimization had to be made: +// +// - Matching and slicing on a huge input is often cause of slowdowns. +// The solution is to chunkify the input into smaller strings. +// The chunks are stored in the `chunks` var, +// `j` holds the current chunk index, and `current` holds +// the index of the current chunk in relation to `input`. +// This gives us an almost 4x speed-up. +// +// - In many cases, we don't need to match individual tokens; +// for example, if a value doesn't hold any variables, operations +// or dynamic references, the parser can effectively 'skip' it, +// treating it as a literal. +// An example would be '1px solid #000' - which evaluates to itself, +// we don't need to know what the individual components are. +// The drawback, of course is that you don't get the benefits of +// syntax-checking on the CSS. This gives us a 50% speed-up in the parser, +// and a smaller speed-up in the code-gen. +// +// +// Token matching is done with the `$` function, which either takes +// a terminal string or regexp, or a non-terminal function to call. +// It also takes care of moving all the indices forwards. +// +// +less.Parser = function Parser(env) { + var input, // LeSS input string + i, // current index in `input` + j, // current chunk + temp, // temporarily holds a chunk's state, for backtracking + memo, // temporarily holds `i`, when backtracking + furthest, // furthest index the parser has gone to + chunks, // chunkified input + current, // index of current chunk, in `input` + parser, + rootFilename = env && env.filename; + + // Top parser on an import tree must be sure there is one "env" + // which will then be passed around by reference. + if (!(env instanceof tree.parseEnv)) { + env = new tree.parseEnv(env); + } + + var imports = this.imports = { + paths: env.paths || [], // Search paths, when importing + queue: [], // Files which haven't been imported yet + files: env.files, // Holds the imported parse trees + contents: env.contents, // Holds the imported file contents + mime: env.mime, // MIME type of .less files + error: null, // Error in parsing/evaluating an import + push: function (path, currentFileInfo, importOptions, callback) { + var parserImports = this; + this.queue.push(path); + + var fileParsedFunc = function (e, root, fullPath) { + parserImports.queue.splice(parserImports.queue.indexOf(path), 1); // Remove the path from the queue + + var importedPreviously = fullPath in parserImports.files || fullPath === rootFilename; + + parserImports.files[fullPath] = root; // Store the root + + if (e && !parserImports.error) { parserImports.error = e; } + + callback(e, root, importedPreviously, fullPath); + }; + + if (less.Parser.importer) { + less.Parser.importer(path, currentFileInfo, fileParsedFunc, env); + } else { + less.Parser.fileLoader(path, currentFileInfo, function(e, contents, fullPath, newFileInfo) { + if (e) {fileParsedFunc(e); return;} + + var newEnv = new tree.parseEnv(env); + + newEnv.currentFileInfo = newFileInfo; + newEnv.processImports = false; + newEnv.contents[fullPath] = contents; + + if (currentFileInfo.reference || importOptions.reference) { + newFileInfo.reference = true; + } + + if (importOptions.inline) { + fileParsedFunc(null, contents, fullPath); + } else { + new(less.Parser)(newEnv).parse(contents, function (e, root) { + fileParsedFunc(e, root, fullPath); + }); + } + }, env); + } + } + }; + + function save() { temp = chunks[j], memo = i, current = i; } + function restore() { chunks[j] = temp, i = memo, current = i; } + + function sync() { + if (i > current) { + chunks[j] = chunks[j].slice(i - current); + current = i; + } + } + function isWhitespace(c) { + // Could change to \s? + var code = c.charCodeAt(0); + return code === 32 || code === 10 || code === 9; + } + // + // Parse from a token, regexp or string, and move forward if match + // + function $(tok) { + var match, length; + + // + // Non-terminal + // + if (tok instanceof Function) { + return tok.call(parser.parsers); + // + // Terminal + // + // Either match a single character in the input, + // or match a regexp in the current chunk (chunk[j]). + // + } else if (typeof(tok) === 'string') { + match = input.charAt(i) === tok ? tok : null; + length = 1; + sync (); + } else { + sync (); + + if (match = tok.exec(chunks[j])) { + length = match[0].length; + } else { + return null; + } + } + + // The match is confirmed, add the match length to `i`, + // and consume any extra white-space characters (' ' || '\n') + // which come after that. The reason for this is that LeSS's + // grammar is mostly white-space insensitive. + // + if (match) { + skipWhitespace(length); + + if(typeof(match) === 'string') { + return match; + } else { + return match.length === 1 ? match[0] : match; + } + } + } + + function skipWhitespace(length) { + var oldi = i, oldj = j, + endIndex = i + chunks[j].length, + mem = i += length; + + while (i < endIndex) { + if (! isWhitespace(input.charAt(i))) { break; } + i++; + } + chunks[j] = chunks[j].slice(length + (i - mem)); + current = i; + + if (chunks[j].length === 0 && j < chunks.length - 1) { j++; } + + return oldi !== i || oldj !== j; + } + + function expect(arg, msg) { + var result = $(arg); + if (! result) { + error(msg || (typeof(arg) === 'string' ? "expected '" + arg + "' got '" + input.charAt(i) + "'" + : "unexpected token")); + } else { + return result; + } + } + + function error(msg, type) { + var e = new Error(msg); + e.index = i; + e.type = type || 'Syntax'; + throw e; + } + + // Same as $(), but don't change the state of the parser, + // just return the match. + function peek(tok) { + if (typeof(tok) === 'string') { + return input.charAt(i) === tok; + } else { + return tok.test(chunks[j]); + } + } + + function getInput(e, env) { + if (e.filename && env.currentFileInfo.filename && (e.filename !== env.currentFileInfo.filename)) { + return parser.imports.contents[e.filename]; + } else { + return input; + } + } + + function getLocation(index, inputStream) { + var n = index + 1, + line = null, + column = -1; + + while (--n >= 0 && inputStream.charAt(n) !== '\n') { + column++; + } + + if (typeof index === 'number') { + line = (inputStream.slice(0, index).match(/\n/g) || "").length; + } + + return { + line: line, + column: column + }; + } + + function getDebugInfo(index, inputStream, env) { + var filename = env.currentFileInfo.filename; + if(less.mode !== 'browser' && less.mode !== 'rhino') { + filename = require('path').resolve(filename); + } + + return { + lineNumber: getLocation(index, inputStream).line + 1, + fileName: filename + }; + } + + function LessError(e, env) { + var input = getInput(e, env), + loc = getLocation(e.index, input), + line = loc.line, + col = loc.column, + callLine = e.call && getLocation(e.call, input).line, + lines = input.split('\n'); + + this.type = e.type || 'Syntax'; + this.message = e.message; + this.filename = e.filename || env.currentFileInfo.filename; + this.index = e.index; + this.line = typeof(line) === 'number' ? line + 1 : null; + this.callLine = callLine + 1; + this.callExtract = lines[callLine]; + this.stack = e.stack; + this.column = col; + this.extract = [ + lines[line - 1], + lines[line], + lines[line + 1] + ]; + } + + LessError.prototype = new Error(); + LessError.prototype.constructor = LessError; + + this.env = env = env || {}; + + // The optimization level dictates the thoroughness of the parser, + // the lower the number, the less nodes it will create in the tree. + // This could matter for debugging, or if you want to access + // the individual nodes in the tree. + this.optimization = ('optimization' in this.env) ? this.env.optimization : 1; + + // + // The Parser + // + return parser = { + + imports: imports, + // + // Parse an input string into an abstract syntax tree, + // call `callback` when done. + // + parse: function (str, callback) { + var root, line, lines, error = null; + + i = j = current = furthest = 0; + input = str.replace(/\r\n/g, '\n'); + + // Remove potential UTF Byte Order Mark + input = input.replace(/^\uFEFF/, ''); + + parser.imports.contents[env.currentFileInfo.filename] = input; + + // Split the input into chunks. + chunks = (function (chunks) { + var j = 0, + skip = /(?:@\{[\w-]+\}|[^"'`\{\}\/\(\)\\])+/g, + comment = /\/\*(?:[^*]|\*+[^\/*])*\*+\/|\/\/.*/g, + string = /"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'|`((?:[^`]|\\.)*)`/g, + level = 0, + match, + chunk = chunks[0], + inParam; + + for (var i = 0, c, cc; i < input.length;) { + skip.lastIndex = i; + if (match = skip.exec(input)) { + if (match.index === i) { + i += match[0].length; + chunk.push(match[0]); + } + } + c = input.charAt(i); + comment.lastIndex = string.lastIndex = i; + + if (match = string.exec(input)) { + if (match.index === i) { + i += match[0].length; + chunk.push(match[0]); + continue; + } + } + + if (!inParam && c === '/') { + cc = input.charAt(i + 1); + if (cc === '/' || cc === '*') { + if (match = comment.exec(input)) { + if (match.index === i) { + i += match[0].length; + chunk.push(match[0]); + continue; + } + } + } + } + + switch (c) { + case '{': + if (!inParam) { + level++; + chunk.push(c); + break; + } + /* falls through */ + case '}': + if (!inParam) { + level--; + chunk.push(c); + chunks[++j] = chunk = []; + break; + } + /* falls through */ + case '(': + if (!inParam) { + inParam = true; + chunk.push(c); + break; + } + /* falls through */ + case ')': + if (inParam) { + inParam = false; + chunk.push(c); + break; + } + /* falls through */ + default: + chunk.push(c); + } + + i++; + } + if (level !== 0) { + error = new(LessError)({ + index: i-1, + type: 'Parse', + message: (level > 0) ? "missing closing `}`" : "missing opening `{`", + filename: env.currentFileInfo.filename + }, env); + } + + return chunks.map(function (c) { return c.join(''); }); + })([[]]); + + if (error) { + return callback(new(LessError)(error, env)); + } + + // Start with the primary rule. + // The whole syntax tree is held under a Ruleset node, + // with the `root` property set to true, so no `{}` are + // output. The callback is called when the input is parsed. + try { + root = new(tree.Ruleset)([], $(this.parsers.primary)); + root.root = true; + root.firstRoot = true; + } catch (e) { + return callback(new(LessError)(e, env)); + } + + root.toCSS = (function (evaluate) { + return function (options, variables) { + options = options || {}; + var evaldRoot, + css, + evalEnv = new tree.evalEnv(options); + + // + // Allows setting variables with a hash, so: + // + // `{ color: new(tree.Color)('#f01') }` will become: + // + // new(tree.Rule)('@color', + // new(tree.Value)([ + // new(tree.Expression)([ + // new(tree.Color)('#f01') + // ]) + // ]) + // ) + // + if (typeof(variables) === 'object' && !Array.isArray(variables)) { + variables = Object.keys(variables).map(function (k) { + var value = variables[k]; + + if (! (value instanceof tree.Value)) { + if (! (value instanceof tree.Expression)) { + value = new(tree.Expression)([value]); + } + value = new(tree.Value)([value]); + } + return new(tree.Rule)('@' + k, value, false, null, 0); + }); + evalEnv.frames = [new(tree.Ruleset)(null, variables)]; + } + + try { + evaldRoot = evaluate.call(this, evalEnv); + + new(tree.joinSelectorVisitor)() + .run(evaldRoot); + + new(tree.processExtendsVisitor)() + .run(evaldRoot); + + new(tree.toCSSVisitor)({compress: Boolean(options.compress)}) + .run(evaldRoot); + + if (options.sourceMap) { + evaldRoot = new tree.sourceMapOutput( + { + writeSourceMap: options.writeSourceMap, + rootNode: evaldRoot, + contentsMap: parser.imports.contents, + sourceMapFilename: options.sourceMapFilename, + outputFilename: options.sourceMapOutputFilename, + sourceMapBasepath: options.sourceMapBasepath, + sourceMapRootpath: options.sourceMapRootpath, + outputSourceFiles: options.outputSourceFiles, + sourceMapGenerator: options.sourceMapGenerator + }); + } + + css = evaldRoot.toCSS({ + compress: Boolean(options.compress), + dumpLineNumbers: env.dumpLineNumbers, + strictUnits: Boolean(options.strictUnits)}); + } catch (e) { + throw new(LessError)(e, env); + } + + if (options.cleancss && less.mode === 'node') { + return require('clean-css').process(css); + } else if (options.compress) { + return css.replace(/(^(\s)+)|((\s)+$)/g, ""); + } else { + return css; + } + }; + })(root.eval); + + // If `i` is smaller than the `input.length - 1`, + // it means the parser wasn't able to parse the whole + // string, so we've got a parsing error. + // + // We try to extract a \n delimited string, + // showing the line where the parse error occured. + // We split it up into two parts (the part which parsed, + // and the part which didn't), so we can color them differently. + if (i < input.length - 1) { + i = furthest; + var loc = getLocation(i, input); + lines = input.split('\n'); + line = loc.line + 1; + + error = { + type: "Parse", + message: "Unrecognised input", + index: i, + filename: env.currentFileInfo.filename, + line: line, + column: loc.column, + extract: [ + lines[line - 2], + lines[line - 1], + lines[line] + ] + }; + } + + var finish = function (e) { + e = error || e || parser.imports.error; + + if (e) { + if (!(e instanceof LessError)) { + e = new(LessError)(e, env); + } + + return callback(e); + } + else { + return callback(null, root); + } + }; + + if (env.processImports !== false) { + new tree.importVisitor(this.imports, finish) + .run(root); + } else { + return finish(); + } + }, + + // + // Here in, the parsing rules/functions + // + // The basic structure of the syntax tree generated is as follows: + // + // Ruleset -> Rule -> Value -> Expression -> Entity + // + // Here's some LESS code: + // + // .class { + // color: #fff; + // border: 1px solid #000; + // width: @w + 4px; + // > .child {...} + // } + // + // And here's what the parse tree might look like: + // + // Ruleset (Selector '.class', [ + // Rule ("color", Value ([Expression [Color #fff]])) + // Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]])) + // Rule ("width", Value ([Expression [Operation "+" [Variable "@w"][Dimension 4px]]])) + // Ruleset (Selector [Element '>', '.child'], [...]) + // ]) + // + // In general, most rules will try to parse a token with the `$()` function, and if the return + // value is truly, will return a new node, of the relevant type. Sometimes, we need to check + // first, before parsing, that's when we use `peek()`. + // + parsers: { + // + // The `primary` rule is the *entry* and *exit* point of the parser. + // The rules here can appear at any level of the parse tree. + // + // The recursive nature of the grammar is an interplay between the `block` + // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule, + // as represented by this simplified grammar: + // + // primary → (ruleset | rule)+ + // ruleset → selector+ block + // block → '{' primary '}' + // + // Only at one point is the primary rule not called from the + // block rule: at the root level. + // + primary: function () { + var node, root = []; + + while ((node = $(this.extendRule) || $(this.mixin.definition) || $(this.rule) || $(this.ruleset) || + $(this.mixin.call) || $(this.comment) || $(this.directive)) + || $(/^[\s\n]+/) || $(/^;+/)) { + node && root.push(node); + } + return root; + }, + + // We create a Comment node for CSS comments `/* */`, + // but keep the LeSS comments `//` silent, by just skipping + // over them. + comment: function () { + var comment; + + if (input.charAt(i) !== '/') { return; } + + if (input.charAt(i + 1) === '/') { + return new(tree.Comment)($(/^\/\/.*/), true, i, env.currentFileInfo); + } else if (comment = $(/^\/\*(?:[^*]|\*+[^\/*])*\*+\/\n?/)) { + return new(tree.Comment)(comment, false, i, env.currentFileInfo); + } + }, + + comments: function () { + var comment, comments = []; + + while(comment = $(this.comment)) { + comments.push(comment); + } + + return comments; + }, + + // + // Entities are tokens which can be found inside an Expression + // + entities: { + // + // A string, which supports escaping " and ' + // + // "milky way" 'he\'s the one!' + // + quoted: function () { + var str, j = i, e, index = i; + + if (input.charAt(j) === '~') { j++, e = true; } // Escaped strings + if (input.charAt(j) !== '"' && input.charAt(j) !== "'") { return; } + + e && $('~'); + + if (str = $(/^"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'/)) { + return new(tree.Quoted)(str[0], str[1] || str[2], e, index, env.currentFileInfo); + } + }, + + // + // A catch-all word, such as: + // + // black border-collapse + // + keyword: function () { + var k; + + if (k = $(/^[_A-Za-z-][_A-Za-z0-9-]*/)) { + var color = tree.Color.fromKeyword(k); + if (color) { + return color; + } + return new(tree.Keyword)(k); + } + }, + + // + // A function call + // + // rgb(255, 0, 255) + // + // We also try to catch IE's `alpha()`, but let the `alpha` parser + // deal with the details. + // + // The arguments are parsed with the `entities.arguments` parser. + // + call: function () { + var name, nameLC, args, alpha_ret, index = i; + + if (! (name = /^([\w-]+|%|progid:[\w\.]+)\(/.exec(chunks[j]))) { return; } + + name = name[1]; + nameLC = name.toLowerCase(); + + if (nameLC === 'url') { return null; } + else { i += name.length; } + + if (nameLC === 'alpha') { + alpha_ret = $(this.alpha); + if(typeof alpha_ret !== 'undefined') { + return alpha_ret; + } + } + + $('('); // Parse the '(' and consume whitespace. + + args = $(this.entities.arguments); + + if (! $(')')) { + return; + } + + if (name) { return new(tree.Call)(name, args, index, env.currentFileInfo); } + }, + arguments: function () { + var args = [], arg; + + while (arg = $(this.entities.assignment) || $(this.expression)) { + args.push(arg); + if (! $(',')) { + break; + } + } + return args; + }, + literal: function () { + return $(this.entities.dimension) || + $(this.entities.color) || + $(this.entities.quoted) || + $(this.entities.unicodeDescriptor); + }, + + // Assignments are argument entities for calls. + // They are present in ie filter properties as shown below. + // + // filter: progid:DXImageTransform.Microsoft.Alpha( *opacity=50* ) + // + + assignment: function () { + var key, value; + if ((key = $(/^\w+(?=\s?=)/i)) && $('=') && (value = $(this.entity))) { + return new(tree.Assignment)(key, value); + } + }, + + // + // Parse url() tokens + // + // We use a specific rule for urls, because they don't really behave like + // standard function calls. The difference is that the argument doesn't have + // to be enclosed within a string, so it can't be parsed as an Expression. + // + url: function () { + var value; + + if (input.charAt(i) !== 'u' || !$(/^url\(/)) { + return; + } + + value = $(this.entities.quoted) || $(this.entities.variable) || + $(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/) || ""; + + expect(')'); + + /*jshint eqnull:true */ + return new(tree.URL)((value.value != null || value instanceof tree.Variable) + ? value : new(tree.Anonymous)(value), env.currentFileInfo); + }, + + // + // A Variable entity, such as `@fink`, in + // + // width: @fink + 2px + // + // We use a different parser for variable definitions, + // see `parsers.variable`. + // + variable: function () { + var name, index = i; + + if (input.charAt(i) === '@' && (name = $(/^@@?[\w-]+/))) { + return new(tree.Variable)(name, index, env.currentFileInfo); + } + }, + + // A variable entity useing the protective {} e.g. @{var} + variableCurly: function () { + var curly, index = i; + + if (input.charAt(i) === '@' && (curly = $(/^@\{([\w-]+)\}/))) { + return new(tree.Variable)("@" + curly[1], index, env.currentFileInfo); + } + }, + + // + // A Hexadecimal color + // + // #4F3C2F + // + // `rgb` and `hsl` colors are parsed through the `entities.call` parser. + // + color: function () { + var rgb; + + if (input.charAt(i) === '#' && (rgb = $(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))) { + return new(tree.Color)(rgb[1]); + } + }, + + // + // A Dimension, that is, a number and a unit + // + // 0.5em 95% + // + dimension: function () { + var value, c = input.charCodeAt(i); + //Is the first char of the dimension 0-9, '.', '+' or '-' + if ((c > 57 || c < 43) || c === 47 || c == 44) { + return; + } + + if (value = $(/^([+-]?\d*\.?\d+)(%|[a-z]+)?/)) { + return new(tree.Dimension)(value[1], value[2]); + } + }, + + // + // A unicode descriptor, as is used in unicode-range + // + // U+0?? or U+00A1-00A9 + // + unicodeDescriptor: function () { + var ud; + + if (ud = $(/^U\+[0-9a-fA-F?]+(\-[0-9a-fA-F?]+)?/)) { + return new(tree.UnicodeDescriptor)(ud[0]); + } + }, + + // + // JavaScript code to be evaluated + // + // `window.location.href` + // + javascript: function () { + var str, j = i, e; + + if (input.charAt(j) === '~') { j++; e = true; } // Escaped strings + if (input.charAt(j) !== '`') { return; } + if (env.javascriptEnabled !== undefined && !env.javascriptEnabled) { + error("You are using JavaScript, which has been disabled."); + } + + if (e) { $('~'); } + + if (str = $(/^`([^`]*)`/)) { + return new(tree.JavaScript)(str[1], i, e); + } + } + }, + + // + // The variable part of a variable definition. Used in the `rule` parser + // + // @fink: + // + variable: function () { + var name; + + if (input.charAt(i) === '@' && (name = $(/^(@[\w-]+)\s*:/))) { return name[1]; } + }, + + // + // extend syntax - used to extend selectors + // + extend: function(isRule) { + var elements, e, index = i, option, extendList = []; + + if (!$(isRule ? /^&:extend\(/ : /^:extend\(/)) { return; } + + do { + option = null; + elements = []; + while (true) { + option = $(/^(all)(?=\s*(\)|,))/); + if (option) { break; } + e = $(this.element); + if (!e) { break; } + elements.push(e); + } + + option = option && option[1]; + + extendList.push(new(tree.Extend)(new(tree.Selector)(elements), option, index)); + + } while($(",")); + + expect(/^\)/); + + if (isRule) { + expect(/^;/); + } + + return extendList; + }, + + // + // extendRule - used in a rule to extend all the parent selectors + // + extendRule: function() { + return this.extend(true); + }, + + // + // Mixins + // + mixin: { + // + // A Mixin call, with an optional argument list + // + // #mixins > .square(#fff); + // .rounded(4px, black); + // .button; + // + // The `while` loop is there because mixins can be + // namespaced, but we only support the child and descendant + // selector for now. + // + call: function () { + var elements = [], e, c, args, index = i, s = input.charAt(i), important = false; + + if (s !== '.' && s !== '#') { return; } + + save(); // stop us absorbing part of an invalid selector + + while (e = $(/^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/)) { + elements.push(new(tree.Element)(c, e, i, env.currentFileInfo)); + c = $('>'); + } + if ($('(')) { + args = this.mixin.args.call(this, true).args; + expect(')'); + } + + args = args || []; + + if ($(this.important)) { + important = true; + } + + if (elements.length > 0 && ($(';') || peek('}'))) { + return new(tree.mixin.Call)(elements, args, index, env.currentFileInfo, important); + } + + restore(); + }, + args: function (isCall) { + var expressions = [], argsSemiColon = [], isSemiColonSeperated, argsComma = [], expressionContainsNamed, name, nameLoop, value, arg, + returner = {args:null, variadic: false}; + while (true) { + if (isCall) { + arg = $(this.expression); + } else { + $(this.comments); + if (input.charAt(i) === '.' && $(/^\.{3}/)) { + returner.variadic = true; + if ($(";") && !isSemiColonSeperated) { + isSemiColonSeperated = true; + } + (isSemiColonSeperated ? argsSemiColon : argsComma) + .push({ variadic: true }); + break; + } + arg = $(this.entities.variable) || $(this.entities.literal) + || $(this.entities.keyword); + } + + if (!arg) { + break; + } + + nameLoop = null; + if (arg.throwAwayComments) { + arg.throwAwayComments(); + } + value = arg; + var val = null; + + if (isCall) { + // Variable + if (arg.value.length == 1) { + val = arg.value[0]; + } + } else { + val = arg; + } + + if (val && val instanceof tree.Variable) { + if ($(':')) { + if (expressions.length > 0) { + if (isSemiColonSeperated) { + error("Cannot mix ; and , as delimiter types"); + } + expressionContainsNamed = true; + } + value = expect(this.expression); + nameLoop = (name = val.name); + } else if (!isCall && $(/^\.{3}/)) { + returner.variadic = true; + if ($(";") && !isSemiColonSeperated) { + isSemiColonSeperated = true; + } + (isSemiColonSeperated ? argsSemiColon : argsComma) + .push({ name: arg.name, variadic: true }); + break; + } else if (!isCall) { + name = nameLoop = val.name; + value = null; + } + } + + if (value) { + expressions.push(value); + } + + argsComma.push({ name:nameLoop, value:value }); + + if ($(',')) { + continue; + } + + if ($(';') || isSemiColonSeperated) { + + if (expressionContainsNamed) { + error("Cannot mix ; and , as delimiter types"); + } + + isSemiColonSeperated = true; + + if (expressions.length > 1) { + value = new(tree.Value)(expressions); + } + argsSemiColon.push({ name:name, value:value }); + + name = null; + expressions = []; + expressionContainsNamed = false; + } + } + + returner.args = isSemiColonSeperated ? argsSemiColon : argsComma; + return returner; + }, + // + // A Mixin definition, with a list of parameters + // + // .rounded (@radius: 2px, @color) { + // ... + // } + // + // Until we have a finer grained state-machine, we have to + // do a look-ahead, to make sure we don't have a mixin call. + // See the `rule` function for more information. + // + // We start by matching `.rounded (`, and then proceed on to + // the argument list, which has optional default values. + // We store the parameters in `params`, with a `value` key, + // if there is a value, such as in the case of `@radius`. + // + // Once we've got our params list, and a closing `)`, we parse + // the `{...}` block. + // + definition: function () { + var name, params = [], match, ruleset, cond, variadic = false; + if ((input.charAt(i) !== '.' && input.charAt(i) !== '#') || + peek(/^[^{]*\}/)) { + return; + } + + save(); + + if (match = $(/^([#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+)\s*\(/)) { + name = match[1]; + + var argInfo = this.mixin.args.call(this, false); + params = argInfo.args; + variadic = argInfo.variadic; + + // .mixincall("@{a}"); + // looks a bit like a mixin definition.. so we have to be nice and restore + if (!$(')')) { + furthest = i; + restore(); + } + + $(this.comments); + + if ($(/^when/)) { // Guard + cond = expect(this.conditions, 'expected condition'); + } + + ruleset = $(this.block); + + if (ruleset) { + return new(tree.mixin.Definition)(name, params, ruleset, cond, variadic); + } else { + restore(); + } + } + } + }, + + // + // Entities are the smallest recognized token, + // and can be found inside a rule's value. + // + entity: function () { + return $(this.entities.literal) || $(this.entities.variable) || $(this.entities.url) || + $(this.entities.call) || $(this.entities.keyword) ||$(this.entities.javascript) || + $(this.comment); + }, + + // + // A Rule terminator. Note that we use `peek()` to check for '}', + // because the `block` rule will be expecting it, but we still need to make sure + // it's there, if ';' was ommitted. + // + end: function () { + return $(';') || peek('}'); + }, + + // + // IE's alpha function + // + // alpha(opacity=88) + // + alpha: function () { + var value; + + if (! $(/^\(opacity=/i)) { return; } + if (value = $(/^\d+/) || $(this.entities.variable)) { + expect(')'); + return new(tree.Alpha)(value); + } + }, + + // + // A Selector Element + // + // div + // + h1 + // #socks + // input[type="text"] + // + // Elements are the building blocks for Selectors, + // they are made out of a `Combinator` (see combinator rule), + // and an element name, such as a tag a class, or `*`. + // + element: function () { + var e, c, v; + + c = $(this.combinator); + + e = $(/^(?:\d+\.\d+|\d+)%/) || $(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/) || + $('*') || $('&') || $(this.attribute) || $(/^\([^()@]+\)/) || $(/^[\.#](?=@)/) || $(this.entities.variableCurly); + + if (! e) { + if ($('(')) { + if ((v = ($(this.selector))) && + $(')')) { + e = new(tree.Paren)(v); + } + } + } + + if (e) { return new(tree.Element)(c, e, i, env.currentFileInfo); } + }, + + // + // Combinators combine elements together, in a Selector. + // + // Because our parser isn't white-space sensitive, special care + // has to be taken, when parsing the descendant combinator, ` `, + // as it's an empty space. We have to check the previous character + // in the input, to see if it's a ` ` character. More info on how + // we deal with this in *combinator.js*. + // + combinator: function () { + var c = input.charAt(i); + + if (c === '>' || c === '+' || c === '~' || c === '|') { + i++; + while (input.charAt(i).match(/\s/)) { i++; } + return new(tree.Combinator)(c); + } else if (input.charAt(i - 1).match(/\s/)) { + return new(tree.Combinator)(" "); + } else { + return new(tree.Combinator)(null); + } + }, + // + // A CSS selector (see selector below) + // with less extensions e.g. the ability to extend and guard + // + lessSelector: function () { + return this.selector(true); + }, + // + // A CSS Selector + // + // .class > div + h1 + // li a:hover + // + // Selectors are made out of one or more Elements, see above. + // + selector: function (isLess) { + var e, elements = [], c, extend, extendList = [], when, condition; + + while ((isLess && (extend = $(this.extend))) || (isLess && (when = $(/^when/))) || (e = $(this.element))) { + if (when) { + condition = expect(this.conditions, 'expected condition'); + } else if (condition) { + error("CSS guard can only be used at the end of selector"); + } else if (extend) { + extendList.push.apply(extendList, extend); + } else { + if (extendList.length) { + error("Extend can only be used at the end of selector"); + } + c = input.charAt(i); + elements.push(e); + e = null; + } + if (c === '{' || c === '}' || c === ';' || c === ',' || c === ')') { + break; + } + } + + if (elements.length > 0) { return new(tree.Selector)(elements, extendList, condition, i, env.currentFileInfo); } + if (extendList.length) { error("Extend must be used to extend a selector, it cannot be used on its own"); } + }, + attribute: function () { + var key, val, op; + + if (! $('[')) { return; } + + if (!(key = $(this.entities.variableCurly))) { + key = expect(/^(?:[_A-Za-z0-9-\*]*\|)?(?:[_A-Za-z0-9-]|\\.)+/); + } + + if ((op = $(/^[|~*$^]?=/))) { + val = $(this.entities.quoted) || $(/^[0-9]+%/) || $(/^[\w-]+/) || $(this.entities.variableCurly); + } + + expect(']'); + + return new(tree.Attribute)(key, op, val); + }, + + // + // The `block` rule is used by `ruleset` and `mixin.definition`. + // It's a wrapper around the `primary` rule, with added `{}`. + // + block: function () { + var content; + if ($('{') && (content = $(this.primary)) && $('}')) { + return content; + } + }, + + // + // div, .class, body > p {...} + // + ruleset: function () { + var selectors = [], s, rules, debugInfo; + + save(); + + if (env.dumpLineNumbers) { + debugInfo = getDebugInfo(i, input, env); + } + + while (s = $(this.lessSelector)) { + selectors.push(s); + $(this.comments); + if (! $(',')) { break; } + if (s.condition) { + error("Guards are only currently allowed on a single selector."); + } + $(this.comments); + } + + if (selectors.length > 0 && (rules = $(this.block))) { + var ruleset = new(tree.Ruleset)(selectors, rules, env.strictImports); + if (env.dumpLineNumbers) { + ruleset.debugInfo = debugInfo; + } + return ruleset; + } else { + // Backtrack + furthest = i; + restore(); + } + }, + rule: function (tryAnonymous) { + var name, value, c = input.charAt(i), important, merge = false; + save(); + + if (c === '.' || c === '#' || c === '&') { return; } + + if (name = $(this.variable) || $(this.ruleProperty)) { + // prefer to try to parse first if its a variable or we are compressing + // but always fallback on the other one + value = !tryAnonymous && (env.compress || (name.charAt(0) === '@')) ? + ($(this.value) || $(this.anonymousValue)) : + ($(this.anonymousValue) || $(this.value)); + + + important = $(this.important); + if (name[name.length-1] === "+") { + merge = true; + name = name.substr(0, name.length - 1); + } + + if (value && $(this.end)) { + return new (tree.Rule)(name, value, important, merge, memo, env.currentFileInfo); + } else { + furthest = i; + restore(); + if (value && !tryAnonymous) { + return this.rule(true); + } + } + } + }, + anonymousValue: function () { + var match; + if (match = /^([^@+\/'"*`(;{}-]*);/.exec(chunks[j])) { + i += match[0].length - 1; + return new(tree.Anonymous)(match[1]); + } + }, + + // + // An @import directive + // + // @import "lib"; + // + // Depending on our environemnt, importing is done differently: + // In the browser, it's an XHR request, in Node, it would be a + // file-system operation. The function used for importing is + // stored in `import`, which we pass to the Import constructor. + // + "import": function () { + var path, features, index = i; + + save(); + + var dir = $(/^@import?\s+/); + + var options = (dir ? $(this.importOptions) : null) || {}; + + if (dir && (path = $(this.entities.quoted) || $(this.entities.url))) { + features = $(this.mediaFeatures); + if ($(';')) { + features = features && new(tree.Value)(features); + return new(tree.Import)(path, features, options, index, env.currentFileInfo); + } + } + + restore(); + }, + + importOptions: function() { + var o, options = {}, optionName, value; + + // list of options, surrounded by parens + if (! $('(')) { return null; } + do { + if (o = $(this.importOption)) { + optionName = o; + value = true; + switch(optionName) { + case "css": + optionName = "less"; + value = false; + break; + case "once": + optionName = "multiple"; + value = false; + break; + } + options[optionName] = value; + if (! $(',')) { break; } + } + } while (o); + expect(')'); + return options; + }, + + importOption: function() { + var opt = $(/^(less|css|multiple|once|inline|reference)/); + if (opt) { + return opt[1]; + } + }, + + mediaFeature: function () { + var e, p, nodes = []; + + do { + if (e = ($(this.entities.keyword) || $(this.entities.variable))) { + nodes.push(e); + } else if ($('(')) { + p = $(this.property); + e = $(this.value); + if ($(')')) { + if (p && e) { + nodes.push(new(tree.Paren)(new(tree.Rule)(p, e, null, null, i, env.currentFileInfo, true))); + } else if (e) { + nodes.push(new(tree.Paren)(e)); + } else { + return null; + } + } else { return null; } + } + } while (e); + + if (nodes.length > 0) { + return new(tree.Expression)(nodes); + } + }, + + mediaFeatures: function () { + var e, features = []; + + do { + if (e = $(this.mediaFeature)) { + features.push(e); + if (! $(',')) { break; } + } else if (e = $(this.entities.variable)) { + features.push(e); + if (! $(',')) { break; } + } + } while (e); + + return features.length > 0 ? features : null; + }, + + media: function () { + var features, rules, media, debugInfo; + + if (env.dumpLineNumbers) { + debugInfo = getDebugInfo(i, input, env); + } + + if ($(/^@media/)) { + features = $(this.mediaFeatures); + + if (rules = $(this.block)) { + media = new(tree.Media)(rules, features, i, env.currentFileInfo); + if (env.dumpLineNumbers) { + media.debugInfo = debugInfo; + } + return media; + } + } + }, + + // + // A CSS Directive + // + // @charset "utf-8"; + // + directive: function () { + var name, value, rules, nonVendorSpecificName, + hasBlock, hasIdentifier, hasExpression, identifier; + + if (input.charAt(i) !== '@') { return; } + + if (value = $(this['import']) || $(this.media)) { + return value; + } + + save(); + + name = $(/^@[a-z-]+/); + + if (!name) { return; } + + nonVendorSpecificName = name; + if (name.charAt(1) == '-' && name.indexOf('-', 2) > 0) { + nonVendorSpecificName = "@" + name.slice(name.indexOf('-', 2) + 1); + } + + switch(nonVendorSpecificName) { + case "@font-face": + hasBlock = true; + break; + case "@viewport": + case "@top-left": + case "@top-left-corner": + case "@top-center": + case "@top-right": + case "@top-right-corner": + case "@bottom-left": + case "@bottom-left-corner": + case "@bottom-center": + case "@bottom-right": + case "@bottom-right-corner": + case "@left-top": + case "@left-middle": + case "@left-bottom": + case "@right-top": + case "@right-middle": + case "@right-bottom": + hasBlock = true; + break; + case "@host": + case "@page": + case "@document": + case "@supports": + case "@keyframes": + hasBlock = true; + hasIdentifier = true; + break; + case "@namespace": + hasExpression = true; + break; + } + + if (hasIdentifier) { + identifier = ($(/^[^{]+/) || '').trim(); + if (identifier) { + name += " " + identifier; + } + } + + if (hasBlock) + { + if (rules = $(this.block)) { + return new(tree.Directive)(name, rules, i, env.currentFileInfo); + } + } else { + if ((value = hasExpression ? $(this.expression) : $(this.entity)) && $(';')) { + var directive = new(tree.Directive)(name, value, i, env.currentFileInfo); + if (env.dumpLineNumbers) { + directive.debugInfo = getDebugInfo(i, input, env); + } + return directive; + } + } + + restore(); + }, + + // + // A Value is a comma-delimited list of Expressions + // + // font-family: Baskerville, Georgia, serif; + // + // In a Rule, a Value represents everything after the `:`, + // and before the `;`. + // + value: function () { + var e, expressions = []; + + while (e = $(this.expression)) { + expressions.push(e); + if (! $(',')) { break; } + } + + if (expressions.length > 0) { + return new(tree.Value)(expressions); + } + }, + important: function () { + if (input.charAt(i) === '!') { + return $(/^! *important/); + } + }, + sub: function () { + var a, e; + + if ($('(')) { + if (a = $(this.addition)) { + e = new(tree.Expression)([a]); + expect(')'); + e.parens = true; + return e; + } + } + }, + multiplication: function () { + var m, a, op, operation, isSpaced; + if (m = $(this.operand)) { + isSpaced = isWhitespace(input.charAt(i - 1)); + while (!peek(/^\/[*\/]/) && (op = ($('/') || $('*')))) { + if (a = $(this.operand)) { + m.parensInOp = true; + a.parensInOp = true; + operation = new(tree.Operation)(op, [operation || m, a], isSpaced); + isSpaced = isWhitespace(input.charAt(i - 1)); + } else { + break; + } + } + return operation || m; + } + }, + addition: function () { + var m, a, op, operation, isSpaced; + if (m = $(this.multiplication)) { + isSpaced = isWhitespace(input.charAt(i - 1)); + while ((op = $(/^[-+]\s+/) || (!isSpaced && ($('+') || $('-')))) && + (a = $(this.multiplication))) { + m.parensInOp = true; + a.parensInOp = true; + operation = new(tree.Operation)(op, [operation || m, a], isSpaced); + isSpaced = isWhitespace(input.charAt(i - 1)); + } + return operation || m; + } + }, + conditions: function () { + var a, b, index = i, condition; + + if (a = $(this.condition)) { + while (peek(/^,\s*(not\s*)?\(/) && $(',') && (b = $(this.condition))) { + condition = new(tree.Condition)('or', condition || a, b, index); + } + return condition || a; + } + }, + condition: function () { + var a, b, c, op, index = i, negate = false; + + if ($(/^not/)) { negate = true; } + expect('('); + if (a = $(this.addition) || $(this.entities.keyword) || $(this.entities.quoted)) { + if (op = $(/^(?:>=|<=|=<|[<=>])/)) { + if (b = $(this.addition) || $(this.entities.keyword) || $(this.entities.quoted)) { + c = new(tree.Condition)(op, a, b, index, negate); + } else { + error('expected expression'); + } + } else { + c = new(tree.Condition)('=', a, new(tree.Keyword)('true'), index, negate); + } + expect(')'); + return $(/^and/) ? new(tree.Condition)('and', c, $(this.condition)) : c; + } + }, + + // + // An operand is anything that can be part of an operation, + // such as a Color, or a Variable + // + operand: function () { + var negate, p = input.charAt(i + 1); + + if (input.charAt(i) === '-' && (p === '@' || p === '(')) { negate = $('-'); } + var o = $(this.sub) || $(this.entities.dimension) || + $(this.entities.color) || $(this.entities.variable) || + $(this.entities.call); + + if (negate) { + o.parensInOp = true; + o = new(tree.Negative)(o); + } + + return o; + }, + + // + // Expressions either represent mathematical operations, + // or white-space delimited Entities. + // + // 1px solid black + // @var * 2 + // + expression: function () { + var e, delim, entities = []; + + while (e = $(this.addition) || $(this.entity)) { + entities.push(e); + // operations do not allow keyword "/" dimension (e.g. small/20px) so we support that here + if (!peek(/^\/[\/*]/) && (delim = $('/'))) { + entities.push(new(tree.Anonymous)(delim)); + } + } + if (entities.length > 0) { + return new(tree.Expression)(entities); + } + }, + property: function () { + var name; + + if (name = $(/^(\*?-?[_a-zA-Z0-9-]+)\s*:/)) { + return name[1]; + } + }, + ruleProperty: function () { + var name; + + if (name = $(/^(\*?-?[_a-zA-Z0-9-]+)\s*(\+?)\s*:/)) { + return name[1] + (name[2] || ""); + } + } + } + }; +}; + + +(function (tree) { + +tree.functions = { + rgb: function (r, g, b) { + return this.rgba(r, g, b, 1.0); + }, + rgba: function (r, g, b, a) { + var rgb = [r, g, b].map(function (c) { return scaled(c, 256); }); + a = number(a); + return new(tree.Color)(rgb, a); + }, + hsl: function (h, s, l) { + return this.hsla(h, s, l, 1.0); + }, + hsla: function (h, s, l, a) { + function hue(h) { + h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h); + if (h * 6 < 1) { return m1 + (m2 - m1) * h * 6; } + else if (h * 2 < 1) { return m2; } + else if (h * 3 < 2) { return m1 + (m2 - m1) * (2/3 - h) * 6; } + else { return m1; } + } + + h = (number(h) % 360) / 360; + s = clamp(number(s)); l = clamp(number(l)); a = clamp(number(a)); + + var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s; + var m1 = l * 2 - m2; + + return this.rgba(hue(h + 1/3) * 255, + hue(h) * 255, + hue(h - 1/3) * 255, + a); + }, + + hsv: function(h, s, v) { + return this.hsva(h, s, v, 1.0); + }, + + hsva: function(h, s, v, a) { + h = ((number(h) % 360) / 360) * 360; + s = number(s); v = number(v); a = number(a); + + var i, f; + i = Math.floor((h / 60) % 6); + f = (h / 60) - i; + + var vs = [v, + v * (1 - s), + v * (1 - f * s), + v * (1 - (1 - f) * s)]; + var perm = [[0, 3, 1], + [2, 0, 1], + [1, 0, 3], + [1, 2, 0], + [3, 1, 0], + [0, 1, 2]]; + + return this.rgba(vs[perm[i][0]] * 255, + vs[perm[i][1]] * 255, + vs[perm[i][2]] * 255, + a); + }, + + hue: function (color) { + return new(tree.Dimension)(Math.round(color.toHSL().h)); + }, + saturation: function (color) { + return new(tree.Dimension)(Math.round(color.toHSL().s * 100), '%'); + }, + lightness: function (color) { + return new(tree.Dimension)(Math.round(color.toHSL().l * 100), '%'); + }, + hsvhue: function(color) { + return new(tree.Dimension)(Math.round(color.toHSV().h)); + }, + hsvsaturation: function (color) { + return new(tree.Dimension)(Math.round(color.toHSV().s * 100), '%'); + }, + hsvvalue: function (color) { + return new(tree.Dimension)(Math.round(color.toHSV().v * 100), '%'); + }, + red: function (color) { + return new(tree.Dimension)(color.rgb[0]); + }, + green: function (color) { + return new(tree.Dimension)(color.rgb[1]); + }, + blue: function (color) { + return new(tree.Dimension)(color.rgb[2]); + }, + alpha: function (color) { + return new(tree.Dimension)(color.toHSL().a); + }, + luma: function (color) { + return new(tree.Dimension)(Math.round(color.luma() * color.alpha * 100), '%'); + }, + saturate: function (color, amount) { + // filter: saturate(3.2); + // should be kept as is, so check for color + if (!color.rgb) { + return null; + } + var hsl = color.toHSL(); + + hsl.s += amount.value / 100; + hsl.s = clamp(hsl.s); + return hsla(hsl); + }, + desaturate: function (color, amount) { + var hsl = color.toHSL(); + + hsl.s -= amount.value / 100; + hsl.s = clamp(hsl.s); + return hsla(hsl); + }, + lighten: function (color, amount) { + var hsl = color.toHSL(); + + hsl.l += amount.value / 100; + hsl.l = clamp(hsl.l); + return hsla(hsl); + }, + darken: function (color, amount) { + var hsl = color.toHSL(); + + hsl.l -= amount.value / 100; + hsl.l = clamp(hsl.l); + return hsla(hsl); + }, + fadein: function (color, amount) { + var hsl = color.toHSL(); + + hsl.a += amount.value / 100; + hsl.a = clamp(hsl.a); + return hsla(hsl); + }, + fadeout: function (color, amount) { + var hsl = color.toHSL(); + + hsl.a -= amount.value / 100; + hsl.a = clamp(hsl.a); + return hsla(hsl); + }, + fade: function (color, amount) { + var hsl = color.toHSL(); + + hsl.a = amount.value / 100; + hsl.a = clamp(hsl.a); + return hsla(hsl); + }, + spin: function (color, amount) { + var hsl = color.toHSL(); + var hue = (hsl.h + amount.value) % 360; + + hsl.h = hue < 0 ? 360 + hue : hue; + + return hsla(hsl); + }, + // + // Copyright (c) 2006-2009 Hampton Catlin, Nathan Weizenbaum, and Chris Eppstein + // http://sass-lang.com + // + mix: function (color1, color2, weight) { + if (!weight) { + weight = new(tree.Dimension)(50); + } + var p = weight.value / 100.0; + var w = p * 2 - 1; + var a = color1.toHSL().a - color2.toHSL().a; + + var w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0; + var w2 = 1 - w1; + + var rgb = [color1.rgb[0] * w1 + color2.rgb[0] * w2, + color1.rgb[1] * w1 + color2.rgb[1] * w2, + color1.rgb[2] * w1 + color2.rgb[2] * w2]; + + var alpha = color1.alpha * p + color2.alpha * (1 - p); + + return new(tree.Color)(rgb, alpha); + }, + greyscale: function (color) { + return this.desaturate(color, new(tree.Dimension)(100)); + }, + contrast: function (color, dark, light, threshold) { + // filter: contrast(3.2); + // should be kept as is, so check for color + if (!color.rgb) { + return null; + } + if (typeof light === 'undefined') { + light = this.rgba(255, 255, 255, 1.0); + } + if (typeof dark === 'undefined') { + dark = this.rgba(0, 0, 0, 1.0); + } + //Figure out which is actually light and dark! + if (dark.luma() > light.luma()) { + var t = light; + light = dark; + dark = t; + } + if (typeof threshold === 'undefined') { + threshold = 0.43; + } else { + threshold = number(threshold); + } + if ((color.luma() * color.alpha) < threshold) { + return light; + } else { + return dark; + } + }, + e: function (str) { + return new(tree.Anonymous)(str instanceof tree.JavaScript ? str.evaluated : str); + }, + escape: function (str) { + return new(tree.Anonymous)(encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B").replace(/\(/g, "%28").replace(/\)/g, "%29")); + }, + '%': function (quoted /* arg, arg, ...*/) { + var args = Array.prototype.slice.call(arguments, 1), + str = quoted.value; + + for (var i = 0; i < args.length; i++) { + /*jshint loopfunc:true */ + str = str.replace(/%[sda]/i, function(token) { + var value = token.match(/s/i) ? args[i].value : args[i].toCSS(); + return token.match(/[A-Z]$/) ? encodeURIComponent(value) : value; + }); + } + str = str.replace(/%%/g, '%'); + return new(tree.Quoted)('"' + str + '"', str); + }, + unit: function (val, unit) { + if(!(val instanceof tree.Dimension)) { + throw { type: "Argument", message: "the first argument to unit must be a number" + (val instanceof tree.Operation ? ". Have you forgotten parenthesis?" : "") }; + } + return new(tree.Dimension)(val.value, unit ? unit.toCSS() : ""); + }, + convert: function (val, unit) { + return val.convertTo(unit.value); + }, + round: function (n, f) { + var fraction = typeof(f) === "undefined" ? 0 : f.value; + return this._math(function(num) { return num.toFixed(fraction); }, null, n); + }, + pi: function () { + return new(tree.Dimension)(Math.PI); + }, + mod: function(a, b) { + return new(tree.Dimension)(a.value % b.value, a.unit); + }, + pow: function(x, y) { + if (typeof x === "number" && typeof y === "number") { + x = new(tree.Dimension)(x); + y = new(tree.Dimension)(y); + } else if (!(x instanceof tree.Dimension) || !(y instanceof tree.Dimension)) { + throw { type: "Argument", message: "arguments must be numbers" }; + } + + return new(tree.Dimension)(Math.pow(x.value, y.value), x.unit); + }, + _math: function (fn, unit, n) { + if (n instanceof tree.Dimension) { + /*jshint eqnull:true */ + return new(tree.Dimension)(fn(parseFloat(n.value)), unit == null ? n.unit : unit); + } else if (typeof(n) === 'number') { + return fn(n); + } else { + throw { type: "Argument", message: "argument must be a number" }; + } + }, + _minmax: function (isMin, args) { + args = Array.prototype.slice.call(args); + switch(args.length) { + case 0: throw { type: "Argument", message: "one or more arguments required" }; + case 1: return args[0]; + } + var i, j, current, currentUnified, referenceUnified, unit, + order = [], // elems only contains original argument values. + values = {}; // key is the unit.toString() for unified tree.Dimension values, + // value is the index into the order array. + for (i = 0; i < args.length; i++) { + current = args[i]; + if (!(current instanceof tree.Dimension)) { + order.push(current); + continue; + } + currentUnified = current.unify(); + unit = currentUnified.unit.toString(); + j = values[unit]; + if (j === undefined) { + values[unit] = order.length; + order.push(current); + continue; + } + referenceUnified = order[j].unify(); + if ( isMin && currentUnified.value < referenceUnified.value || + !isMin && currentUnified.value > referenceUnified.value) { + order[j] = current; + } + } + if (order.length == 1) { + return order[0]; + } + args = order.map(function (a) { return a.toCSS(this.env); }) + .join(this.env.compress ? "," : ", "); + return new(tree.Anonymous)((isMin ? "min" : "max") + "(" + args + ")"); + }, + min: function () { + return this._minmax(true, arguments); + }, + max: function () { + return this._minmax(false, arguments); + }, + argb: function (color) { + return new(tree.Anonymous)(color.toARGB()); + + }, + percentage: function (n) { + return new(tree.Dimension)(n.value * 100, '%'); + }, + color: function (n) { + if (n instanceof tree.Quoted) { + var colorCandidate = n.value, + returnColor; + returnColor = tree.Color.fromKeyword(colorCandidate); + if (returnColor) { + return returnColor; + } + if (/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/.test(colorCandidate)) { + return new(tree.Color)(colorCandidate.slice(1)); + } + throw { type: "Argument", message: "argument must be a color keyword or 3/6 digit hex e.g. #FFF" }; + } else { + throw { type: "Argument", message: "argument must be a string" }; + } + }, + iscolor: function (n) { + return this._isa(n, tree.Color); + }, + isnumber: function (n) { + return this._isa(n, tree.Dimension); + }, + isstring: function (n) { + return this._isa(n, tree.Quoted); + }, + iskeyword: function (n) { + return this._isa(n, tree.Keyword); + }, + isurl: function (n) { + return this._isa(n, tree.URL); + }, + ispixel: function (n) { + return this.isunit(n, 'px'); + }, + ispercentage: function (n) { + return this.isunit(n, '%'); + }, + isem: function (n) { + return this.isunit(n, 'em'); + }, + isunit: function (n, unit) { + return (n instanceof tree.Dimension) && n.unit.is(unit.value || unit) ? tree.True : tree.False; + }, + _isa: function (n, Type) { + return (n instanceof Type) ? tree.True : tree.False; + }, + + /* Blending modes */ + + multiply: function(color1, color2) { + var r = color1.rgb[0] * color2.rgb[0] / 255; + var g = color1.rgb[1] * color2.rgb[1] / 255; + var b = color1.rgb[2] * color2.rgb[2] / 255; + return this.rgb(r, g, b); + }, + screen: function(color1, color2) { + var r = 255 - (255 - color1.rgb[0]) * (255 - color2.rgb[0]) / 255; + var g = 255 - (255 - color1.rgb[1]) * (255 - color2.rgb[1]) / 255; + var b = 255 - (255 - color1.rgb[2]) * (255 - color2.rgb[2]) / 255; + return this.rgb(r, g, b); + }, + overlay: function(color1, color2) { + var r = color1.rgb[0] < 128 ? 2 * color1.rgb[0] * color2.rgb[0] / 255 : 255 - 2 * (255 - color1.rgb[0]) * (255 - color2.rgb[0]) / 255; + var g = color1.rgb[1] < 128 ? 2 * color1.rgb[1] * color2.rgb[1] / 255 : 255 - 2 * (255 - color1.rgb[1]) * (255 - color2.rgb[1]) / 255; + var b = color1.rgb[2] < 128 ? 2 * color1.rgb[2] * color2.rgb[2] / 255 : 255 - 2 * (255 - color1.rgb[2]) * (255 - color2.rgb[2]) / 255; + return this.rgb(r, g, b); + }, + softlight: function(color1, color2) { + var t = color2.rgb[0] * color1.rgb[0] / 255; + var r = t + color1.rgb[0] * (255 - (255 - color1.rgb[0]) * (255 - color2.rgb[0]) / 255 - t) / 255; + t = color2.rgb[1] * color1.rgb[1] / 255; + var g = t + color1.rgb[1] * (255 - (255 - color1.rgb[1]) * (255 - color2.rgb[1]) / 255 - t) / 255; + t = color2.rgb[2] * color1.rgb[2] / 255; + var b = t + color1.rgb[2] * (255 - (255 - color1.rgb[2]) * (255 - color2.rgb[2]) / 255 - t) / 255; + return this.rgb(r, g, b); + }, + hardlight: function(color1, color2) { + var r = color2.rgb[0] < 128 ? 2 * color2.rgb[0] * color1.rgb[0] / 255 : 255 - 2 * (255 - color2.rgb[0]) * (255 - color1.rgb[0]) / 255; + var g = color2.rgb[1] < 128 ? 2 * color2.rgb[1] * color1.rgb[1] / 255 : 255 - 2 * (255 - color2.rgb[1]) * (255 - color1.rgb[1]) / 255; + var b = color2.rgb[2] < 128 ? 2 * color2.rgb[2] * color1.rgb[2] / 255 : 255 - 2 * (255 - color2.rgb[2]) * (255 - color1.rgb[2]) / 255; + return this.rgb(r, g, b); + }, + difference: function(color1, color2) { + var r = Math.abs(color1.rgb[0] - color2.rgb[0]); + var g = Math.abs(color1.rgb[1] - color2.rgb[1]); + var b = Math.abs(color1.rgb[2] - color2.rgb[2]); + return this.rgb(r, g, b); + }, + exclusion: function(color1, color2) { + var r = color1.rgb[0] + color2.rgb[0] * (255 - color1.rgb[0] - color1.rgb[0]) / 255; + var g = color1.rgb[1] + color2.rgb[1] * (255 - color1.rgb[1] - color1.rgb[1]) / 255; + var b = color1.rgb[2] + color2.rgb[2] * (255 - color1.rgb[2] - color1.rgb[2]) / 255; + return this.rgb(r, g, b); + }, + average: function(color1, color2) { + var r = (color1.rgb[0] + color2.rgb[0]) / 2; + var g = (color1.rgb[1] + color2.rgb[1]) / 2; + var b = (color1.rgb[2] + color2.rgb[2]) / 2; + return this.rgb(r, g, b); + }, + negation: function(color1, color2) { + var r = 255 - Math.abs(255 - color2.rgb[0] - color1.rgb[0]); + var g = 255 - Math.abs(255 - color2.rgb[1] - color1.rgb[1]); + var b = 255 - Math.abs(255 - color2.rgb[2] - color1.rgb[2]); + return this.rgb(r, g, b); + }, + tint: function(color, amount) { + return this.mix(this.rgb(255,255,255), color, amount); + }, + shade: function(color, amount) { + return this.mix(this.rgb(0, 0, 0), color, amount); + }, + extract: function(values, index) { + index = index.value - 1; // (1-based index) + // handle non-array values as an array of length 1 + // return 'undefined' if index is invalid + return Array.isArray(values.value) + ? values.value[index] : Array(values)[index]; + }, + length: function(values) { + var n = Array.isArray(values.value) ? values.value.length : 1; + return new tree.Dimension(n); + }, + + "data-uri": function(mimetypeNode, filePathNode) { + + if (typeof window !== 'undefined') { + return new tree.URL(filePathNode || mimetypeNode, this.currentFileInfo).eval(this.env); + } + + var mimetype = mimetypeNode.value; + var filePath = (filePathNode && filePathNode.value); + + var fs = require("fs"), + path = require("path"), + useBase64 = false; + + if (arguments.length < 2) { + filePath = mimetype; + } + + if (this.env.isPathRelative(filePath)) { + if (this.currentFileInfo.relativeUrls) { + filePath = path.join(this.currentFileInfo.currentDirectory, filePath); + } else { + filePath = path.join(this.currentFileInfo.entryPath, filePath); + } + } + + // detect the mimetype if not given + if (arguments.length < 2) { + var mime; + try { + mime = require('mime'); + } catch (ex) { + mime = tree._mime; + } + + mimetype = mime.lookup(filePath); + + // use base 64 unless it's an ASCII or UTF-8 format + var charset = mime.charsets.lookup(mimetype); + useBase64 = ['US-ASCII', 'UTF-8'].indexOf(charset) < 0; + if (useBase64) { mimetype += ';base64'; } + } + else { + useBase64 = /;base64$/.test(mimetype); + } + + var buf = fs.readFileSync(filePath); + + // IE8 cannot handle a data-uri larger than 32KB. If this is exceeded + // and the --ieCompat flag is enabled, return a normal url() instead. + var DATA_URI_MAX_KB = 32, + fileSizeInKB = parseInt((buf.length / 1024), 10); + if (fileSizeInKB >= DATA_URI_MAX_KB) { + + if (this.env.ieCompat !== false) { + if (!this.env.silent) { + console.warn("Skipped data-uri embedding of %s because its size (%dKB) exceeds IE8-safe %dKB!", filePath, fileSizeInKB, DATA_URI_MAX_KB); + } + + return new tree.URL(filePathNode || mimetypeNode, this.currentFileInfo).eval(this.env); + } + } + + buf = useBase64 ? buf.toString('base64') + : encodeURIComponent(buf); + + var uri = "'data:" + mimetype + ',' + buf + "'"; + return new(tree.URL)(new(tree.Anonymous)(uri)); + }, + + "svg-gradient": function(direction) { + + function throwArgumentDescriptor() { + throw { type: "Argument", message: "svg-gradient expects direction, start_color [start_position], [color position,]..., end_color [end_position]" }; + } + + if (arguments.length < 3) { + throwArgumentDescriptor(); + } + var stops = Array.prototype.slice.call(arguments, 1), + gradientDirectionSvg, + gradientType = "linear", + rectangleDimension = 'x="0" y="0" width="1" height="1"', + useBase64 = true, + renderEnv = {compress: false}, + returner, + directionValue = direction.toCSS(renderEnv), + i, color, position, positionValue, alpha; + + switch (directionValue) { + case "to bottom": + gradientDirectionSvg = 'x1="0%" y1="0%" x2="0%" y2="100%"'; + break; + case "to right": + gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="0%"'; + break; + case "to bottom right": + gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="100%"'; + break; + case "to top right": + gradientDirectionSvg = 'x1="0%" y1="100%" x2="100%" y2="0%"'; + break; + case "ellipse": + case "ellipse at center": + gradientType = "radial"; + gradientDirectionSvg = 'cx="50%" cy="50%" r="75%"'; + rectangleDimension = 'x="-50" y="-50" width="101" height="101"'; + break; + default: + throw { type: "Argument", message: "svg-gradient direction must be 'to bottom', 'to right', 'to bottom right', 'to top right' or 'ellipse at center'" }; + } + returner = '' + + '' + + '<' + gradientType + 'Gradient id="gradient" gradientUnits="userSpaceOnUse" ' + gradientDirectionSvg + '>'; + + for (i = 0; i < stops.length; i+= 1) { + if (stops[i].value) { + color = stops[i].value[0]; + position = stops[i].value[1]; + } else { + color = stops[i]; + position = undefined; + } + + if (!(color instanceof tree.Color) || (!((i === 0 || i+1 === stops.length) && position === undefined) && !(position instanceof tree.Dimension))) { + throwArgumentDescriptor(); + } + positionValue = position ? position.toCSS(renderEnv) : i === 0 ? "0%" : "100%"; + alpha = color.alpha; + returner += ''; + } + returner += '' + + ''; + + if (useBase64) { + // only works in node, needs interface to what is supported in environment + try { + returner = new Buffer(returner).toString('base64'); + } catch(e) { + useBase64 = false; + } + } + + returner = "'data:image/svg+xml" + (useBase64 ? ";base64" : "") + "," + returner + "'"; + return new(tree.URL)(new(tree.Anonymous)(returner)); + } +}; + +// these static methods are used as a fallback when the optional 'mime' dependency is missing +tree._mime = { + // this map is intentionally incomplete + // if you want more, install 'mime' dep + _types: { + '.htm' : 'text/html', + '.html': 'text/html', + '.gif' : 'image/gif', + '.jpg' : 'image/jpeg', + '.jpeg': 'image/jpeg', + '.png' : 'image/png' + }, + lookup: function (filepath) { + var ext = require('path').extname(filepath), + type = tree._mime._types[ext]; + if (type === undefined) { + throw new Error('Optional dependency "mime" is required for ' + ext); + } + return type; + }, + charsets: { + lookup: function (type) { + // assumes all text types are UTF-8 + return type && (/^text\//).test(type) ? 'UTF-8' : ''; + } + } +}; + +var mathFunctions = [{name:"ceil"}, {name:"floor"}, {name: "sqrt"}, {name:"abs"}, + {name:"tan", unit: ""}, {name:"sin", unit: ""}, {name:"cos", unit: ""}, + {name:"atan", unit: "rad"}, {name:"asin", unit: "rad"}, {name:"acos", unit: "rad"}], + createMathFunction = function(name, unit) { + return function(n) { + /*jshint eqnull:true */ + if (unit != null) { + n = n.unify(); + } + return this._math(Math[name], unit, n); + }; + }; + +for(var i = 0; i < mathFunctions.length; i++) { + tree.functions[mathFunctions[i].name] = createMathFunction(mathFunctions[i].name, mathFunctions[i].unit); +} + +function hsla(color) { + return tree.functions.hsla(color.h, color.s, color.l, color.a); +} + +function scaled(n, size) { + if (n instanceof tree.Dimension && n.unit.is('%')) { + return parseFloat(n.value * size / 100); + } else { + return number(n); + } +} + +function number(n) { + if (n instanceof tree.Dimension) { + return parseFloat(n.unit.is('%') ? n.value / 100 : n.value); + } else if (typeof(n) === 'number') { + return n; + } else { + throw { + error: "RuntimeError", + message: "color functions take numbers as parameters" + }; + } +} + +function clamp(val) { + return Math.min(1, Math.max(0, val)); +} + +tree.functionCall = function(env, currentFileInfo) { + this.env = env; + this.currentFileInfo = currentFileInfo; +}; + +tree.functionCall.prototype = tree.functions; + +})(require('./tree')); + +(function (tree) { + tree.colors = { + 'aliceblue':'#f0f8ff', + 'antiquewhite':'#faebd7', + 'aqua':'#00ffff', + 'aquamarine':'#7fffd4', + 'azure':'#f0ffff', + 'beige':'#f5f5dc', + 'bisque':'#ffe4c4', + 'black':'#000000', + 'blanchedalmond':'#ffebcd', + 'blue':'#0000ff', + 'blueviolet':'#8a2be2', + 'brown':'#a52a2a', + 'burlywood':'#deb887', + 'cadetblue':'#5f9ea0', + 'chartreuse':'#7fff00', + 'chocolate':'#d2691e', + 'coral':'#ff7f50', + 'cornflowerblue':'#6495ed', + 'cornsilk':'#fff8dc', + 'crimson':'#dc143c', + 'cyan':'#00ffff', + 'darkblue':'#00008b', + 'darkcyan':'#008b8b', + 'darkgoldenrod':'#b8860b', + 'darkgray':'#a9a9a9', + 'darkgrey':'#a9a9a9', + 'darkgreen':'#006400', + 'darkkhaki':'#bdb76b', + 'darkmagenta':'#8b008b', + 'darkolivegreen':'#556b2f', + 'darkorange':'#ff8c00', + 'darkorchid':'#9932cc', + 'darkred':'#8b0000', + 'darksalmon':'#e9967a', + 'darkseagreen':'#8fbc8f', + 'darkslateblue':'#483d8b', + 'darkslategray':'#2f4f4f', + 'darkslategrey':'#2f4f4f', + 'darkturquoise':'#00ced1', + 'darkviolet':'#9400d3', + 'deeppink':'#ff1493', + 'deepskyblue':'#00bfff', + 'dimgray':'#696969', + 'dimgrey':'#696969', + 'dodgerblue':'#1e90ff', + 'firebrick':'#b22222', + 'floralwhite':'#fffaf0', + 'forestgreen':'#228b22', + 'fuchsia':'#ff00ff', + 'gainsboro':'#dcdcdc', + 'ghostwhite':'#f8f8ff', + 'gold':'#ffd700', + 'goldenrod':'#daa520', + 'gray':'#808080', + 'grey':'#808080', + 'green':'#008000', + 'greenyellow':'#adff2f', + 'honeydew':'#f0fff0', + 'hotpink':'#ff69b4', + 'indianred':'#cd5c5c', + 'indigo':'#4b0082', + 'ivory':'#fffff0', + 'khaki':'#f0e68c', + 'lavender':'#e6e6fa', + 'lavenderblush':'#fff0f5', + 'lawngreen':'#7cfc00', + 'lemonchiffon':'#fffacd', + 'lightblue':'#add8e6', + 'lightcoral':'#f08080', + 'lightcyan':'#e0ffff', + 'lightgoldenrodyellow':'#fafad2', + 'lightgray':'#d3d3d3', + 'lightgrey':'#d3d3d3', + 'lightgreen':'#90ee90', + 'lightpink':'#ffb6c1', + 'lightsalmon':'#ffa07a', + 'lightseagreen':'#20b2aa', + 'lightskyblue':'#87cefa', + 'lightslategray':'#778899', + 'lightslategrey':'#778899', + 'lightsteelblue':'#b0c4de', + 'lightyellow':'#ffffe0', + 'lime':'#00ff00', + 'limegreen':'#32cd32', + 'linen':'#faf0e6', + 'magenta':'#ff00ff', + 'maroon':'#800000', + 'mediumaquamarine':'#66cdaa', + 'mediumblue':'#0000cd', + 'mediumorchid':'#ba55d3', + 'mediumpurple':'#9370d8', + 'mediumseagreen':'#3cb371', + 'mediumslateblue':'#7b68ee', + 'mediumspringgreen':'#00fa9a', + 'mediumturquoise':'#48d1cc', + 'mediumvioletred':'#c71585', + 'midnightblue':'#191970', + 'mintcream':'#f5fffa', + 'mistyrose':'#ffe4e1', + 'moccasin':'#ffe4b5', + 'navajowhite':'#ffdead', + 'navy':'#000080', + 'oldlace':'#fdf5e6', + 'olive':'#808000', + 'olivedrab':'#6b8e23', + 'orange':'#ffa500', + 'orangered':'#ff4500', + 'orchid':'#da70d6', + 'palegoldenrod':'#eee8aa', + 'palegreen':'#98fb98', + 'paleturquoise':'#afeeee', + 'palevioletred':'#d87093', + 'papayawhip':'#ffefd5', + 'peachpuff':'#ffdab9', + 'peru':'#cd853f', + 'pink':'#ffc0cb', + 'plum':'#dda0dd', + 'powderblue':'#b0e0e6', + 'purple':'#800080', + 'red':'#ff0000', + 'rosybrown':'#bc8f8f', + 'royalblue':'#4169e1', + 'saddlebrown':'#8b4513', + 'salmon':'#fa8072', + 'sandybrown':'#f4a460', + 'seagreen':'#2e8b57', + 'seashell':'#fff5ee', + 'sienna':'#a0522d', + 'silver':'#c0c0c0', + 'skyblue':'#87ceeb', + 'slateblue':'#6a5acd', + 'slategray':'#708090', + 'slategrey':'#708090', + 'snow':'#fffafa', + 'springgreen':'#00ff7f', + 'steelblue':'#4682b4', + 'tan':'#d2b48c', + 'teal':'#008080', + 'thistle':'#d8bfd8', + 'tomato':'#ff6347', + 'turquoise':'#40e0d0', + 'violet':'#ee82ee', + 'wheat':'#f5deb3', + 'white':'#ffffff', + 'whitesmoke':'#f5f5f5', + 'yellow':'#ffff00', + 'yellowgreen':'#9acd32' + }; +})(require('./tree')); + +(function (tree) { + +tree.debugInfo = function(env, ctx, lineSeperator) { + var result=""; + if (env.dumpLineNumbers && !env.compress) { + switch(env.dumpLineNumbers) { + case 'comments': + result = tree.debugInfo.asComment(ctx); + break; + case 'mediaquery': + result = tree.debugInfo.asMediaQuery(ctx); + break; + case 'all': + result = tree.debugInfo.asComment(ctx) + (lineSeperator || "") + tree.debugInfo.asMediaQuery(ctx); + break; + } + } + return result; +}; + +tree.debugInfo.asComment = function(ctx) { + return '/* line ' + ctx.debugInfo.lineNumber + ', ' + ctx.debugInfo.fileName + ' */\n'; +}; + +tree.debugInfo.asMediaQuery = function(ctx) { + return '@media -sass-debug-info{filename{font-family:' + + ('file://' + ctx.debugInfo.fileName).replace(/([.:/\\])/g, function (a) { + if (a == '\\') { + a = '\/'; + } + return '\\' + a; + }) + + '}line{font-family:\\00003' + ctx.debugInfo.lineNumber + '}}\n'; +}; + +tree.find = function (obj, fun) { + for (var i = 0, r; i < obj.length; i++) { + if (r = fun.call(obj, obj[i])) { return r; } + } + return null; +}; + +tree.jsify = function (obj) { + if (Array.isArray(obj.value) && (obj.value.length > 1)) { + return '[' + obj.value.map(function (v) { return v.toCSS(false); }).join(', ') + ']'; + } else { + return obj.toCSS(false); + } +}; + +tree.toCSS = function (env) { + var strs = []; + this.genCSS(env, { + add: function(chunk, fileInfo, index) { + strs.push(chunk); + }, + isEmpty: function () { + return strs.length === 0; + } + }); + return strs.join(''); +}; + +tree.outputRuleset = function (env, output, rules) { + output.add((env.compress ? '{' : ' {\n')); + env.tabLevel = (env.tabLevel || 0) + 1; + var tabRuleStr = env.compress ? '' : Array(env.tabLevel + 1).join(" "), + tabSetStr = env.compress ? '' : Array(env.tabLevel).join(" "); + for(var i = 0; i < rules.length; i++) { + output.add(tabRuleStr); + rules[i].genCSS(env, output); + output.add(env.compress ? '' : '\n'); + } + env.tabLevel--; + output.add(tabSetStr + "}"); +}; + +})(require('./tree')); + +(function (tree) { + +tree.Alpha = function (val) { + this.value = val; +}; +tree.Alpha.prototype = { + type: "Alpha", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + eval: function (env) { + if (this.value.eval) { return new tree.Alpha(this.value.eval(env)); } + return this; + }, + genCSS: function (env, output) { + output.add("alpha(opacity="); + + if (this.value.genCSS) { + this.value.genCSS(env, output); + } else { + output.add(this.value); + } + + output.add(")"); + }, + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { + +tree.Anonymous = function (string, index, currentFileInfo, mapLines) { + this.value = string.value || string; + this.index = index; + this.mapLines = mapLines; + this.currentFileInfo = currentFileInfo; +}; +tree.Anonymous.prototype = { + type: "Anonymous", + eval: function () { return this; }, + compare: function (x) { + if (!x.toCSS) { + return -1; + } + + var left = this.toCSS(), + right = x.toCSS(); + + if (left === right) { + return 0; + } + + return left < right ? -1 : 1; + }, + genCSS: function (env, output) { + output.add(this.value, this.currentFileInfo, this.index, this.mapLines); + }, + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { + +tree.Assignment = function (key, val) { + this.key = key; + this.value = val; +}; +tree.Assignment.prototype = { + type: "Assignment", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + eval: function (env) { + if (this.value.eval) { + return new(tree.Assignment)(this.key, this.value.eval(env)); + } + return this; + }, + genCSS: function (env, output) { + output.add(this.key + '='); + if (this.value.genCSS) { + this.value.genCSS(env, output); + } else { + output.add(this.value); + } + }, + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { + +// +// A function call node. +// +tree.Call = function (name, args, index, currentFileInfo) { + this.name = name; + this.args = args; + this.index = index; + this.currentFileInfo = currentFileInfo; +}; +tree.Call.prototype = { + type: "Call", + accept: function (visitor) { + this.args = visitor.visit(this.args); + }, + // + // When evaluating a function call, + // we either find the function in `tree.functions` [1], + // in which case we call it, passing the evaluated arguments, + // if this returns null or we cannot find the function, we + // simply print it out as it appeared originally [2]. + // + // The *functions.js* file contains the built-in functions. + // + // The reason why we evaluate the arguments, is in the case where + // we try to pass a variable to a function, like: `saturate(@color)`. + // The function should receive the value, not the variable. + // + eval: function (env) { + var args = this.args.map(function (a) { return a.eval(env); }), + nameLC = this.name.toLowerCase(), + result, func; + + if (nameLC in tree.functions) { // 1. + try { + func = new tree.functionCall(env, this.currentFileInfo); + result = func[nameLC].apply(func, args); + /*jshint eqnull:true */ + if (result != null) { + return result; + } + } catch (e) { + throw { type: e.type || "Runtime", + message: "error evaluating function `" + this.name + "`" + + (e.message ? ': ' + e.message : ''), + index: this.index, filename: this.currentFileInfo.filename }; + } + } + + return new tree.Call(this.name, args, this.index, this.currentFileInfo); + }, + + genCSS: function (env, output) { + output.add(this.name + "(", this.currentFileInfo, this.index); + + for(var i = 0; i < this.args.length; i++) { + this.args[i].genCSS(env, output); + if (i + 1 < this.args.length) { + output.add(", "); + } + } + + output.add(")"); + }, + + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { +// +// RGB Colors - #ff0014, #eee +// +tree.Color = function (rgb, a) { + // + // The end goal here, is to parse the arguments + // into an integer triplet, such as `128, 255, 0` + // + // This facilitates operations and conversions. + // + if (Array.isArray(rgb)) { + this.rgb = rgb; + } else if (rgb.length == 6) { + this.rgb = rgb.match(/.{2}/g).map(function (c) { + return parseInt(c, 16); + }); + } else { + this.rgb = rgb.split('').map(function (c) { + return parseInt(c + c, 16); + }); + } + this.alpha = typeof(a) === 'number' ? a : 1; +}; + +var transparentKeyword = "transparent"; + +tree.Color.prototype = { + type: "Color", + eval: function () { return this; }, + luma: function () { return (0.2126 * this.rgb[0] / 255) + (0.7152 * this.rgb[1] / 255) + (0.0722 * this.rgb[2] / 255); }, + + genCSS: function (env, output) { + output.add(this.toCSS(env)); + }, + toCSS: function (env, doNotCompress) { + var compress = env && env.compress && !doNotCompress; + + // If we have some transparency, the only way to represent it + // is via `rgba`. Otherwise, we use the hex representation, + // which has better compatibility with older browsers. + // Values are capped between `0` and `255`, rounded and zero-padded. + if (this.alpha < 1.0) { + if (this.alpha === 0 && this.isTransparentKeyword) { + return transparentKeyword; + } + return "rgba(" + this.rgb.map(function (c) { + return Math.round(c); + }).concat(this.alpha).join(',' + (compress ? '' : ' ')) + ")"; + } else { + var color = this.toRGB(); + + if (compress) { + var splitcolor = color.split(''); + + // Convert color to short format + if (splitcolor[1] === splitcolor[2] && splitcolor[3] === splitcolor[4] && splitcolor[5] === splitcolor[6]) { + color = '#' + splitcolor[1] + splitcolor[3] + splitcolor[5]; + } + } + + return color; + } + }, + + // + // Operations have to be done per-channel, if not, + // channels will spill onto each other. Once we have + // our result, in the form of an integer triplet, + // we create a new Color node to hold the result. + // + operate: function (env, op, other) { + var result = []; + + if (! (other instanceof tree.Color)) { + other = other.toColor(); + } + + for (var c = 0; c < 3; c++) { + result[c] = tree.operate(env, op, this.rgb[c], other.rgb[c]); + } + return new(tree.Color)(result, this.alpha + other.alpha); + }, + + toRGB: function () { + return '#' + this.rgb.map(function (i) { + i = Math.round(i); + i = (i > 255 ? 255 : (i < 0 ? 0 : i)).toString(16); + return i.length === 1 ? '0' + i : i; + }).join(''); + }, + + toHSL: function () { + var r = this.rgb[0] / 255, + g = this.rgb[1] / 255, + b = this.rgb[2] / 255, + a = this.alpha; + + var max = Math.max(r, g, b), min = Math.min(r, g, b); + var h, s, l = (max + min) / 2, d = max - min; + + if (max === min) { + h = s = 0; + } else { + s = l > 0.5 ? d / (2 - max - min) : d / (max + min); + + switch (max) { + case r: h = (g - b) / d + (g < b ? 6 : 0); break; + case g: h = (b - r) / d + 2; break; + case b: h = (r - g) / d + 4; break; + } + h /= 6; + } + return { h: h * 360, s: s, l: l, a: a }; + }, + //Adapted from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript + toHSV: function () { + var r = this.rgb[0] / 255, + g = this.rgb[1] / 255, + b = this.rgb[2] / 255, + a = this.alpha; + + var max = Math.max(r, g, b), min = Math.min(r, g, b); + var h, s, v = max; + + var d = max - min; + if (max === 0) { + s = 0; + } else { + s = d / max; + } + + if (max === min) { + h = 0; + } else { + switch(max){ + case r: h = (g - b) / d + (g < b ? 6 : 0); break; + case g: h = (b - r) / d + 2; break; + case b: h = (r - g) / d + 4; break; + } + h /= 6; + } + return { h: h * 360, s: s, v: v, a: a }; + }, + toARGB: function () { + var argb = [Math.round(this.alpha * 255)].concat(this.rgb); + return '#' + argb.map(function (i) { + i = Math.round(i); + i = (i > 255 ? 255 : (i < 0 ? 0 : i)).toString(16); + return i.length === 1 ? '0' + i : i; + }).join(''); + }, + compare: function (x) { + if (!x.rgb) { + return -1; + } + + return (x.rgb[0] === this.rgb[0] && + x.rgb[1] === this.rgb[1] && + x.rgb[2] === this.rgb[2] && + x.alpha === this.alpha) ? 0 : -1; + } +}; + +tree.Color.fromKeyword = function(keyword) { + if (tree.colors.hasOwnProperty(keyword)) { + // detect named color + return new(tree.Color)(tree.colors[keyword].slice(1)); + } + if (keyword === transparentKeyword) { + var transparent = new(tree.Color)([0, 0, 0], 0); + transparent.isTransparentKeyword = true; + return transparent; + } +}; + + +})(require('../tree')); + +(function (tree) { + +tree.Comment = function (value, silent, index, currentFileInfo) { + this.value = value; + this.silent = !!silent; + this.currentFileInfo = currentFileInfo; +}; +tree.Comment.prototype = { + type: "Comment", + genCSS: function (env, output) { + if (this.debugInfo) { + output.add(tree.debugInfo(env, this), this.currentFileInfo, this.index); + } + output.add(this.value.trim()); //TODO shouldn't need to trim, we shouldn't grab the \n + }, + toCSS: tree.toCSS, + isSilent: function(env) { + var isReference = (this.currentFileInfo && this.currentFileInfo.reference && !this.isReferenced), + isCompressed = env.compress && !this.value.match(/^\/\*!/); + return this.silent || isReference || isCompressed; + }, + eval: function () { return this; }, + markReferenced: function () { + this.isReferenced = true; + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Condition = function (op, l, r, i, negate) { + this.op = op.trim(); + this.lvalue = l; + this.rvalue = r; + this.index = i; + this.negate = negate; +}; +tree.Condition.prototype = { + type: "Condition", + accept: function (visitor) { + this.lvalue = visitor.visit(this.lvalue); + this.rvalue = visitor.visit(this.rvalue); + }, + eval: function (env) { + var a = this.lvalue.eval(env), + b = this.rvalue.eval(env); + + var i = this.index, result; + + result = (function (op) { + switch (op) { + case 'and': + return a && b; + case 'or': + return a || b; + default: + if (a.compare) { + result = a.compare(b); + } else if (b.compare) { + result = b.compare(a); + } else { + throw { type: "Type", + message: "Unable to perform comparison", + index: i }; + } + switch (result) { + case -1: return op === '<' || op === '=<' || op === '<='; + case 0: return op === '=' || op === '>=' || op === '=<' || op === '<='; + case 1: return op === '>' || op === '>='; + } + } + })(this.op); + return this.negate ? !result : result; + } +}; + +})(require('../tree')); + +(function (tree) { + +// +// A number with a unit +// +tree.Dimension = function (value, unit) { + this.value = parseFloat(value); + this.unit = (unit && unit instanceof tree.Unit) ? unit : + new(tree.Unit)(unit ? [unit] : undefined); +}; + +tree.Dimension.prototype = { + type: "Dimension", + accept: function (visitor) { + this.unit = visitor.visit(this.unit); + }, + eval: function (env) { + return this; + }, + toColor: function () { + return new(tree.Color)([this.value, this.value, this.value]); + }, + genCSS: function (env, output) { + if ((env && env.strictUnits) && !this.unit.isSingular()) { + throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: "+this.unit.toString()); + } + + var value = this.value, + strValue = String(value); + + if (value !== 0 && value < 0.000001 && value > -0.000001) { + // would be output 1e-6 etc. + strValue = value.toFixed(20).replace(/0+$/, ""); + } + + if (env && env.compress) { + // Zero values doesn't need a unit + if (value === 0 && this.unit.isLength()) { + output.add(strValue); + return; + } + + // Float values doesn't need a leading zero + if (value > 0 && value < 1) { + strValue = (strValue).substr(1); + } + } + + output.add(strValue); + this.unit.genCSS(env, output); + }, + toCSS: tree.toCSS, + + // In an operation between two Dimensions, + // we default to the first Dimension's unit, + // so `1px + 2` will yield `3px`. + operate: function (env, op, other) { + /*jshint noempty:false */ + var value = tree.operate(env, op, this.value, other.value), + unit = this.unit.clone(); + + if (op === '+' || op === '-') { + if (unit.numerator.length === 0 && unit.denominator.length === 0) { + unit.numerator = other.unit.numerator.slice(0); + unit.denominator = other.unit.denominator.slice(0); + } else if (other.unit.numerator.length === 0 && unit.denominator.length === 0) { + // do nothing + } else { + other = other.convertTo(this.unit.usedUnits()); + + if(env.strictUnits && other.unit.toString() !== unit.toString()) { + throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '" + unit.toString() + + "' and '" + other.unit.toString() + "'."); + } + + value = tree.operate(env, op, this.value, other.value); + } + } else if (op === '*') { + unit.numerator = unit.numerator.concat(other.unit.numerator).sort(); + unit.denominator = unit.denominator.concat(other.unit.denominator).sort(); + unit.cancel(); + } else if (op === '/') { + unit.numerator = unit.numerator.concat(other.unit.denominator).sort(); + unit.denominator = unit.denominator.concat(other.unit.numerator).sort(); + unit.cancel(); + } + return new(tree.Dimension)(value, unit); + }, + + compare: function (other) { + if (other instanceof tree.Dimension) { + var a = this.unify(), b = other.unify(), + aValue = a.value, bValue = b.value; + + if (bValue > aValue) { + return -1; + } else if (bValue < aValue) { + return 1; + } else { + if (!b.unit.isEmpty() && a.unit.compare(b.unit) !== 0) { + return -1; + } + return 0; + } + } else { + return -1; + } + }, + + unify: function () { + return this.convertTo({ length: 'm', duration: 's', angle: 'rad' }); + }, + + convertTo: function (conversions) { + var value = this.value, unit = this.unit.clone(), + i, groupName, group, targetUnit, derivedConversions = {}, applyUnit; + + if (typeof conversions === 'string') { + for(i in tree.UnitConversions) { + if (tree.UnitConversions[i].hasOwnProperty(conversions)) { + derivedConversions = {}; + derivedConversions[i] = conversions; + } + } + conversions = derivedConversions; + } + applyUnit = function (atomicUnit, denominator) { + /*jshint loopfunc:true */ + if (group.hasOwnProperty(atomicUnit)) { + if (denominator) { + value = value / (group[atomicUnit] / group[targetUnit]); + } else { + value = value * (group[atomicUnit] / group[targetUnit]); + } + + return targetUnit; + } + + return atomicUnit; + }; + + for (groupName in conversions) { + if (conversions.hasOwnProperty(groupName)) { + targetUnit = conversions[groupName]; + group = tree.UnitConversions[groupName]; + + unit.map(applyUnit); + } + } + + unit.cancel(); + + return new(tree.Dimension)(value, unit); + } +}; + +// http://www.w3.org/TR/css3-values/#absolute-lengths +tree.UnitConversions = { + length: { + 'm': 1, + 'cm': 0.01, + 'mm': 0.001, + 'in': 0.0254, + 'pt': 0.0254 / 72, + 'pc': 0.0254 / 72 * 12 + }, + duration: { + 's': 1, + 'ms': 0.001 + }, + angle: { + 'rad': 1/(2*Math.PI), + 'deg': 1/360, + 'grad': 1/400, + 'turn': 1 + } +}; + +tree.Unit = function (numerator, denominator, backupUnit) { + this.numerator = numerator ? numerator.slice(0).sort() : []; + this.denominator = denominator ? denominator.slice(0).sort() : []; + this.backupUnit = backupUnit; +}; + +tree.Unit.prototype = { + type: "Unit", + clone: function () { + return new tree.Unit(this.numerator.slice(0), this.denominator.slice(0), this.backupUnit); + }, + genCSS: function (env, output) { + if (this.numerator.length >= 1) { + output.add(this.numerator[0]); + } else + if (this.denominator.length >= 1) { + output.add(this.denominator[0]); + } else + if ((!env || !env.strictUnits) && this.backupUnit) { + output.add(this.backupUnit); + } + }, + toCSS: tree.toCSS, + + toString: function () { + var i, returnStr = this.numerator.join("*"); + for (i = 0; i < this.denominator.length; i++) { + returnStr += "/" + this.denominator[i]; + } + return returnStr; + }, + + compare: function (other) { + return this.is(other.toString()) ? 0 : -1; + }, + + is: function (unitString) { + return this.toString() === unitString; + }, + + isLength: function () { + return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/)); + }, + + isEmpty: function () { + return this.numerator.length === 0 && this.denominator.length === 0; + }, + + isSingular: function() { + return this.numerator.length <= 1 && this.denominator.length === 0; + }, + + map: function(callback) { + var i; + + for (i = 0; i < this.numerator.length; i++) { + this.numerator[i] = callback(this.numerator[i], false); + } + + for (i = 0; i < this.denominator.length; i++) { + this.denominator[i] = callback(this.denominator[i], true); + } + }, + + usedUnits: function() { + var group, result = {}, mapUnit; + + mapUnit = function (atomicUnit) { + /*jshint loopfunc:true */ + if (group.hasOwnProperty(atomicUnit) && !result[groupName]) { + result[groupName] = atomicUnit; + } + + return atomicUnit; + }; + + for (var groupName in tree.UnitConversions) { + if (tree.UnitConversions.hasOwnProperty(groupName)) { + group = tree.UnitConversions[groupName]; + + this.map(mapUnit); + } + } + + return result; + }, + + cancel: function () { + var counter = {}, atomicUnit, i, backup; + + for (i = 0; i < this.numerator.length; i++) { + atomicUnit = this.numerator[i]; + if (!backup) { + backup = atomicUnit; + } + counter[atomicUnit] = (counter[atomicUnit] || 0) + 1; + } + + for (i = 0; i < this.denominator.length; i++) { + atomicUnit = this.denominator[i]; + if (!backup) { + backup = atomicUnit; + } + counter[atomicUnit] = (counter[atomicUnit] || 0) - 1; + } + + this.numerator = []; + this.denominator = []; + + for (atomicUnit in counter) { + if (counter.hasOwnProperty(atomicUnit)) { + var count = counter[atomicUnit]; + + if (count > 0) { + for (i = 0; i < count; i++) { + this.numerator.push(atomicUnit); + } + } else if (count < 0) { + for (i = 0; i < -count; i++) { + this.denominator.push(atomicUnit); + } + } + } + } + + if (this.numerator.length === 0 && this.denominator.length === 0 && backup) { + this.backupUnit = backup; + } + + this.numerator.sort(); + this.denominator.sort(); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Directive = function (name, value, index, currentFileInfo) { + this.name = name; + + if (Array.isArray(value)) { + this.rules = [new(tree.Ruleset)([], value)]; + this.rules[0].allowImports = true; + } else { + this.value = value; + } + this.currentFileInfo = currentFileInfo; + +}; +tree.Directive.prototype = { + type: "Directive", + accept: function (visitor) { + this.rules = visitor.visit(this.rules); + this.value = visitor.visit(this.value); + }, + genCSS: function (env, output) { + output.add(this.name, this.currentFileInfo, this.index); + if (this.rules) { + tree.outputRuleset(env, output, this.rules); + } else { + output.add(' '); + this.value.genCSS(env, output); + output.add(';'); + } + }, + toCSS: tree.toCSS, + eval: function (env) { + var evaldDirective = this; + if (this.rules) { + env.frames.unshift(this); + evaldDirective = new(tree.Directive)(this.name, null, this.index, this.currentFileInfo); + evaldDirective.rules = [this.rules[0].eval(env)]; + evaldDirective.rules[0].root = true; + env.frames.shift(); + } + return evaldDirective; + }, + variable: function (name) { return tree.Ruleset.prototype.variable.call(this.rules[0], name); }, + find: function () { return tree.Ruleset.prototype.find.apply(this.rules[0], arguments); }, + rulesets: function () { return tree.Ruleset.prototype.rulesets.apply(this.rules[0]); }, + markReferenced: function () { + var i, rules; + this.isReferenced = true; + if (this.rules) { + rules = this.rules[0].rules; + for (i = 0; i < rules.length; i++) { + if (rules[i].markReferenced) { + rules[i].markReferenced(); + } + } + } + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Element = function (combinator, value, index, currentFileInfo) { + this.combinator = combinator instanceof tree.Combinator ? + combinator : new(tree.Combinator)(combinator); + + if (typeof(value) === 'string') { + this.value = value.trim(); + } else if (value) { + this.value = value; + } else { + this.value = ""; + } + this.index = index; + this.currentFileInfo = currentFileInfo; +}; +tree.Element.prototype = { + type: "Element", + accept: function (visitor) { + this.combinator = visitor.visit(this.combinator); + this.value = visitor.visit(this.value); + }, + eval: function (env) { + return new(tree.Element)(this.combinator, + this.value.eval ? this.value.eval(env) : this.value, + this.index, + this.currentFileInfo); + }, + genCSS: function (env, output) { + output.add(this.toCSS(env), this.currentFileInfo, this.index); + }, + toCSS: function (env) { + var value = (this.value.toCSS ? this.value.toCSS(env) : this.value); + if (value === '' && this.combinator.value.charAt(0) === '&') { + return ''; + } else { + return this.combinator.toCSS(env || {}) + value; + } + } +}; + +tree.Attribute = function (key, op, value) { + this.key = key; + this.op = op; + this.value = value; +}; +tree.Attribute.prototype = { + type: "Attribute", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + eval: function (env) { + return new(tree.Attribute)(this.key.eval ? this.key.eval(env) : this.key, + this.op, (this.value && this.value.eval) ? this.value.eval(env) : this.value); + }, + genCSS: function (env, output) { + output.add(this.toCSS(env)); + }, + toCSS: function (env) { + var value = this.key.toCSS ? this.key.toCSS(env) : this.key; + + if (this.op) { + value += this.op; + value += (this.value.toCSS ? this.value.toCSS(env) : this.value); + } + + return '[' + value + ']'; + } +}; + +tree.Combinator = function (value) { + if (value === ' ') { + this.value = ' '; + } else { + this.value = value ? value.trim() : ""; + } +}; +tree.Combinator.prototype = { + type: "Combinator", + _outputMap: { + '' : '', + ' ' : ' ', + ':' : ' :', + '+' : ' + ', + '~' : ' ~ ', + '>' : ' > ', + '|' : '|' + }, + _outputMapCompressed: { + '' : '', + ' ' : ' ', + ':' : ' :', + '+' : '+', + '~' : '~', + '>' : '>', + '|' : '|' + }, + genCSS: function (env, output) { + output.add((env.compress ? this._outputMapCompressed : this._outputMap)[this.value]); + }, + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { + +tree.Expression = function (value) { this.value = value; }; +tree.Expression.prototype = { + type: "Expression", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + eval: function (env) { + var returnValue, + inParenthesis = this.parens && !this.parensInOp, + doubleParen = false; + if (inParenthesis) { + env.inParenthesis(); + } + if (this.value.length > 1) { + returnValue = new(tree.Expression)(this.value.map(function (e) { + return e.eval(env); + })); + } else if (this.value.length === 1) { + if (this.value[0].parens && !this.value[0].parensInOp) { + doubleParen = true; + } + returnValue = this.value[0].eval(env); + } else { + returnValue = this; + } + if (inParenthesis) { + env.outOfParenthesis(); + } + if (this.parens && this.parensInOp && !(env.isMathOn()) && !doubleParen) { + returnValue = new(tree.Paren)(returnValue); + } + return returnValue; + }, + genCSS: function (env, output) { + for(var i = 0; i < this.value.length; i++) { + this.value[i].genCSS(env, output); + if (i + 1 < this.value.length) { + output.add(" "); + } + } + }, + toCSS: tree.toCSS, + throwAwayComments: function () { + this.value = this.value.filter(function(v) { + return !(v instanceof tree.Comment); + }); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Extend = function Extend(selector, option, index) { + this.selector = selector; + this.option = option; + this.index = index; + + switch(option) { + case "all": + this.allowBefore = true; + this.allowAfter = true; + break; + default: + this.allowBefore = false; + this.allowAfter = false; + break; + } +}; + +tree.Extend.prototype = { + type: "Extend", + accept: function (visitor) { + this.selector = visitor.visit(this.selector); + }, + eval: function (env) { + return new(tree.Extend)(this.selector.eval(env), this.option, this.index); + }, + clone: function (env) { + return new(tree.Extend)(this.selector, this.option, this.index); + }, + findSelfSelectors: function (selectors) { + var selfElements = [], + i, + selectorElements; + + for(i = 0; i < selectors.length; i++) { + selectorElements = selectors[i].elements; + // duplicate the logic in genCSS function inside the selector node. + // future TODO - move both logics into the selector joiner visitor + if (i > 0 && selectorElements.length && selectorElements[0].combinator.value === "") { + selectorElements[0].combinator.value = ' '; + } + selfElements = selfElements.concat(selectors[i].elements); + } + + this.selfSelectors = [{ elements: selfElements }]; + } +}; + +})(require('../tree')); + +(function (tree) { +// +// CSS @import node +// +// The general strategy here is that we don't want to wait +// for the parsing to be completed, before we start importing +// the file. That's because in the context of a browser, +// most of the time will be spent waiting for the server to respond. +// +// On creation, we push the import path to our import queue, though +// `import,push`, we also pass it a callback, which it'll call once +// the file has been fetched, and parsed. +// +tree.Import = function (path, features, options, index, currentFileInfo) { + this.options = options; + this.index = index; + this.path = path; + this.features = features; + this.currentFileInfo = currentFileInfo; + + if (this.options.less !== undefined || this.options.inline) { + this.css = !this.options.less || this.options.inline; + } else { + var pathValue = this.getPath(); + if (pathValue && /css([\?;].*)?$/.test(pathValue)) { + this.css = true; + } + } +}; + +// +// The actual import node doesn't return anything, when converted to CSS. +// The reason is that it's used at the evaluation stage, so that the rules +// it imports can be treated like any other rules. +// +// In `eval`, we make sure all Import nodes get evaluated, recursively, so +// we end up with a flat structure, which can easily be imported in the parent +// ruleset. +// +tree.Import.prototype = { + type: "Import", + accept: function (visitor) { + this.features = visitor.visit(this.features); + this.path = visitor.visit(this.path); + if (!this.options.inline) { + this.root = visitor.visit(this.root); + } + }, + genCSS: function (env, output) { + if (this.css) { + output.add("@import ", this.currentFileInfo, this.index); + this.path.genCSS(env, output); + if (this.features) { + output.add(" "); + this.features.genCSS(env, output); + } + output.add(';'); + } + }, + toCSS: tree.toCSS, + getPath: function () { + if (this.path instanceof tree.Quoted) { + var path = this.path.value; + return (this.css !== undefined || /(\.[a-z]*$)|([\?;].*)$/.test(path)) ? path : path + '.less'; + } else if (this.path instanceof tree.URL) { + return this.path.value.value; + } + return null; + }, + evalForImport: function (env) { + return new(tree.Import)(this.path.eval(env), this.features, this.options, this.index, this.currentFileInfo); + }, + evalPath: function (env) { + var path = this.path.eval(env); + var rootpath = this.currentFileInfo && this.currentFileInfo.rootpath; + + if (!(path instanceof tree.URL)) { + if (rootpath) { + var pathValue = path.value; + // Add the base path if the import is relative + if (pathValue && env.isPathRelative(pathValue)) { + path.value = rootpath + pathValue; + } + } + path.value = env.normalizePath(path.value); + } + + return path; + }, + eval: function (env) { + var ruleset, features = this.features && this.features.eval(env); + + if (this.skip) { return []; } + + if (this.options.inline) { + //todo needs to reference css file not import + var contents = new(tree.Anonymous)(this.root, 0, {filename: this.importedFilename}, true); + return this.features ? new(tree.Media)([contents], this.features.value) : [contents]; + } else if (this.css) { + var newImport = new(tree.Import)(this.evalPath(env), features, this.options, this.index); + if (!newImport.css && this.error) { + throw this.error; + } + return newImport; + } else { + ruleset = new(tree.Ruleset)([], this.root.rules.slice(0)); + + ruleset.evalImports(env); + + return this.features ? new(tree.Media)(ruleset.rules, this.features.value) : ruleset.rules; + } + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.JavaScript = function (string, index, escaped) { + this.escaped = escaped; + this.expression = string; + this.index = index; +}; +tree.JavaScript.prototype = { + type: "JavaScript", + eval: function (env) { + var result, + that = this, + context = {}; + + var expression = this.expression.replace(/@\{([\w-]+)\}/g, function (_, name) { + return tree.jsify(new(tree.Variable)('@' + name, that.index).eval(env)); + }); + + try { + expression = new(Function)('return (' + expression + ')'); + } catch (e) { + throw { message: "JavaScript evaluation error: " + e.message + " from `" + expression + "`" , + index: this.index }; + } + + for (var k in env.frames[0].variables()) { + /*jshint loopfunc:true */ + context[k.slice(1)] = { + value: env.frames[0].variables()[k].value, + toJS: function () { + return this.value.eval(env).toCSS(); + } + }; + } + + try { + result = expression.call(context); + } catch (e) { + throw { message: "JavaScript evaluation error: '" + e.name + ': ' + e.message + "'" , + index: this.index }; + } + if (typeof(result) === 'string') { + return new(tree.Quoted)('"' + result + '"', result, this.escaped, this.index); + } else if (Array.isArray(result)) { + return new(tree.Anonymous)(result.join(', ')); + } else { + return new(tree.Anonymous)(result); + } + } +}; + +})(require('../tree')); + + +(function (tree) { + +tree.Keyword = function (value) { this.value = value; }; +tree.Keyword.prototype = { + type: "Keyword", + eval: function () { return this; }, + genCSS: function (env, output) { + output.add(this.value); + }, + toCSS: tree.toCSS, + compare: function (other) { + if (other instanceof tree.Keyword) { + return other.value === this.value ? 0 : 1; + } else { + return -1; + } + } +}; + +tree.True = new(tree.Keyword)('true'); +tree.False = new(tree.Keyword)('false'); + +})(require('../tree')); + +(function (tree) { + +tree.Media = function (value, features, index, currentFileInfo) { + this.index = index; + this.currentFileInfo = currentFileInfo; + + var selectors = this.emptySelectors(); + + this.features = new(tree.Value)(features); + this.rules = [new(tree.Ruleset)(selectors, value)]; + this.rules[0].allowImports = true; +}; +tree.Media.prototype = { + type: "Media", + accept: function (visitor) { + this.features = visitor.visit(this.features); + this.rules = visitor.visit(this.rules); + }, + genCSS: function (env, output) { + output.add('@media ', this.currentFileInfo, this.index); + this.features.genCSS(env, output); + tree.outputRuleset(env, output, this.rules); + }, + toCSS: tree.toCSS, + eval: function (env) { + if (!env.mediaBlocks) { + env.mediaBlocks = []; + env.mediaPath = []; + } + + var media = new(tree.Media)([], [], this.index, this.currentFileInfo); + if(this.debugInfo) { + this.rules[0].debugInfo = this.debugInfo; + media.debugInfo = this.debugInfo; + } + var strictMathBypass = false; + if (!env.strictMath) { + strictMathBypass = true; + env.strictMath = true; + } + try { + media.features = this.features.eval(env); + } + finally { + if (strictMathBypass) { + env.strictMath = false; + } + } + + env.mediaPath.push(media); + env.mediaBlocks.push(media); + + env.frames.unshift(this.rules[0]); + media.rules = [this.rules[0].eval(env)]; + env.frames.shift(); + + env.mediaPath.pop(); + + return env.mediaPath.length === 0 ? media.evalTop(env) : + media.evalNested(env); + }, + variable: function (name) { return tree.Ruleset.prototype.variable.call(this.rules[0], name); }, + find: function () { return tree.Ruleset.prototype.find.apply(this.rules[0], arguments); }, + rulesets: function () { return tree.Ruleset.prototype.rulesets.apply(this.rules[0]); }, + emptySelectors: function() { + var el = new(tree.Element)('', '&', this.index, this.currentFileInfo); + return [new(tree.Selector)([el], null, null, this.index, this.currentFileInfo)]; + }, + markReferenced: function () { + var i, rules = this.rules[0].rules; + this.isReferenced = true; + for (i = 0; i < rules.length; i++) { + if (rules[i].markReferenced) { + rules[i].markReferenced(); + } + } + }, + + evalTop: function (env) { + var result = this; + + // Render all dependent Media blocks. + if (env.mediaBlocks.length > 1) { + var selectors = this.emptySelectors(); + result = new(tree.Ruleset)(selectors, env.mediaBlocks); + result.multiMedia = true; + } + + delete env.mediaBlocks; + delete env.mediaPath; + + return result; + }, + evalNested: function (env) { + var i, value, + path = env.mediaPath.concat([this]); + + // Extract the media-query conditions separated with `,` (OR). + for (i = 0; i < path.length; i++) { + value = path[i].features instanceof tree.Value ? + path[i].features.value : path[i].features; + path[i] = Array.isArray(value) ? value : [value]; + } + + // Trace all permutations to generate the resulting media-query. + // + // (a, b and c) with nested (d, e) -> + // a and d + // a and e + // b and c and d + // b and c and e + this.features = new(tree.Value)(this.permute(path).map(function (path) { + path = path.map(function (fragment) { + return fragment.toCSS ? fragment : new(tree.Anonymous)(fragment); + }); + + for(i = path.length - 1; i > 0; i--) { + path.splice(i, 0, new(tree.Anonymous)("and")); + } + + return new(tree.Expression)(path); + })); + + // Fake a tree-node that doesn't output anything. + return new(tree.Ruleset)([], []); + }, + permute: function (arr) { + if (arr.length === 0) { + return []; + } else if (arr.length === 1) { + return arr[0]; + } else { + var result = []; + var rest = this.permute(arr.slice(1)); + for (var i = 0; i < rest.length; i++) { + for (var j = 0; j < arr[0].length; j++) { + result.push([arr[0][j]].concat(rest[i])); + } + } + return result; + } + }, + bubbleSelectors: function (selectors) { + this.rules = [new(tree.Ruleset)(selectors.slice(0), [this.rules[0]])]; + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.mixin = {}; +tree.mixin.Call = function (elements, args, index, currentFileInfo, important) { + this.selector = new(tree.Selector)(elements); + this.arguments = args; + this.index = index; + this.currentFileInfo = currentFileInfo; + this.important = important; +}; +tree.mixin.Call.prototype = { + type: "MixinCall", + accept: function (visitor) { + this.selector = visitor.visit(this.selector); + this.arguments = visitor.visit(this.arguments); + }, + eval: function (env) { + var mixins, mixin, args, rules = [], match = false, i, m, f, isRecursive, isOneFound, rule; + + args = this.arguments && this.arguments.map(function (a) { + return { name: a.name, value: a.value.eval(env) }; + }); + + for (i = 0; i < env.frames.length; i++) { + if ((mixins = env.frames[i].find(this.selector)).length > 0) { + isOneFound = true; + for (m = 0; m < mixins.length; m++) { + mixin = mixins[m]; + isRecursive = false; + for(f = 0; f < env.frames.length; f++) { + if ((!(mixin instanceof tree.mixin.Definition)) && mixin === (env.frames[f].originalRuleset || env.frames[f])) { + isRecursive = true; + break; + } + } + if (isRecursive) { + continue; + } + if (mixin.matchArgs(args, env)) { + if (!mixin.matchCondition || mixin.matchCondition(args, env)) { + try { + if (!(mixin instanceof tree.mixin.Definition)) { + mixin = new tree.mixin.Definition("", [], mixin.rules, null, false); + mixin.originalRuleset = mixins[m].originalRuleset || mixins[m]; + } + //if (this.important) { + // isImportant = env.isImportant; + // env.isImportant = true; + //} + Array.prototype.push.apply( + rules, mixin.eval(env, args, this.important).rules); + //if (this.important) { + // env.isImportant = isImportant; + //} + } catch (e) { + throw { message: e.message, index: this.index, filename: this.currentFileInfo.filename, stack: e.stack }; + } + } + match = true; + } + } + if (match) { + if (!this.currentFileInfo || !this.currentFileInfo.reference) { + for (i = 0; i < rules.length; i++) { + rule = rules[i]; + if (rule.markReferenced) { + rule.markReferenced(); + } + } + } + return rules; + } + } + } + if (isOneFound) { + throw { type: 'Runtime', + message: 'No matching definition was found for `' + + this.selector.toCSS().trim() + '(' + + (args ? args.map(function (a) { + var argValue = ""; + if (a.name) { + argValue += a.name + ":"; + } + if (a.value.toCSS) { + argValue += a.value.toCSS(); + } else { + argValue += "???"; + } + return argValue; + }).join(', ') : "") + ")`", + index: this.index, filename: this.currentFileInfo.filename }; + } else { + throw { type: 'Name', + message: this.selector.toCSS().trim() + " is undefined", + index: this.index, filename: this.currentFileInfo.filename }; + } + } +}; + +tree.mixin.Definition = function (name, params, rules, condition, variadic) { + this.name = name; + this.selectors = [new(tree.Selector)([new(tree.Element)(null, name, this.index, this.currentFileInfo)])]; + this.params = params; + this.condition = condition; + this.variadic = variadic; + this.arity = params.length; + this.rules = rules; + this._lookups = {}; + this.required = params.reduce(function (count, p) { + if (!p.name || (p.name && !p.value)) { return count + 1; } + else { return count; } + }, 0); + this.parent = tree.Ruleset.prototype; + this.frames = []; +}; +tree.mixin.Definition.prototype = { + type: "MixinDefinition", + accept: function (visitor) { + this.params = visitor.visit(this.params); + this.rules = visitor.visit(this.rules); + this.condition = visitor.visit(this.condition); + }, + variable: function (name) { return this.parent.variable.call(this, name); }, + variables: function () { return this.parent.variables.call(this); }, + find: function () { return this.parent.find.apply(this, arguments); }, + rulesets: function () { return this.parent.rulesets.apply(this); }, + + evalParams: function (env, mixinEnv, args, evaldArguments) { + /*jshint boss:true */ + var frame = new(tree.Ruleset)(null, []), + varargs, arg, + params = this.params.slice(0), + i, j, val, name, isNamedFound, argIndex; + + mixinEnv = new tree.evalEnv(mixinEnv, [frame].concat(mixinEnv.frames)); + + if (args) { + args = args.slice(0); + + for(i = 0; i < args.length; i++) { + arg = args[i]; + if (name = (arg && arg.name)) { + isNamedFound = false; + for(j = 0; j < params.length; j++) { + if (!evaldArguments[j] && name === params[j].name) { + evaldArguments[j] = arg.value.eval(env); + frame.rules.unshift(new(tree.Rule)(name, arg.value.eval(env))); + isNamedFound = true; + break; + } + } + if (isNamedFound) { + args.splice(i, 1); + i--; + continue; + } else { + throw { type: 'Runtime', message: "Named argument for " + this.name + + ' ' + args[i].name + ' not found' }; + } + } + } + } + argIndex = 0; + for (i = 0; i < params.length; i++) { + if (evaldArguments[i]) { continue; } + + arg = args && args[argIndex]; + + if (name = params[i].name) { + if (params[i].variadic && args) { + varargs = []; + for (j = argIndex; j < args.length; j++) { + varargs.push(args[j].value.eval(env)); + } + frame.rules.unshift(new(tree.Rule)(name, new(tree.Expression)(varargs).eval(env))); + } else { + val = arg && arg.value; + if (val) { + val = val.eval(env); + } else if (params[i].value) { + val = params[i].value.eval(mixinEnv); + frame.resetCache(); + } else { + throw { type: 'Runtime', message: "wrong number of arguments for " + this.name + + ' (' + args.length + ' for ' + this.arity + ')' }; + } + + frame.rules.unshift(new(tree.Rule)(name, val)); + evaldArguments[i] = val; + } + } + + if (params[i].variadic && args) { + for (j = argIndex; j < args.length; j++) { + evaldArguments[j] = args[j].value.eval(env); + } + } + argIndex++; + } + + return frame; + }, + eval: function (env, args, important) { + var _arguments = [], + mixinFrames = this.frames.concat(env.frames), + frame = this.evalParams(env, new(tree.evalEnv)(env, mixinFrames), args, _arguments), + rules, ruleset; + + frame.rules.unshift(new(tree.Rule)('@arguments', new(tree.Expression)(_arguments).eval(env))); + + rules = this.rules.slice(0); + + ruleset = new(tree.Ruleset)(null, rules); + ruleset.originalRuleset = this; + ruleset = ruleset.eval(new(tree.evalEnv)(env, [this, frame].concat(mixinFrames))); + if (important) { + ruleset = this.parent.makeImportant.apply(ruleset); + } + return ruleset; + }, + matchCondition: function (args, env) { + if (this.condition && !this.condition.eval( + new(tree.evalEnv)(env, + [this.evalParams(env, new(tree.evalEnv)(env, this.frames.concat(env.frames)), args, [])] // the parameter variables + .concat(this.frames) // the parent namespace/mixin frames + .concat(env.frames)))) { // the current environment frames + return false; + } + return true; + }, + matchArgs: function (args, env) { + var argsLength = (args && args.length) || 0, len; + + if (! this.variadic) { + if (argsLength < this.required) { return false; } + if (argsLength > this.params.length) { return false; } + } else { + if (argsLength < (this.required - 1)) { return false; } + } + + len = Math.min(argsLength, this.arity); + + for (var i = 0; i < len; i++) { + if (!this.params[i].name && !this.params[i].variadic) { + if (args[i].value.eval(env).toCSS() != this.params[i].value.eval(env).toCSS()) { + return false; + } + } + } + return true; + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Negative = function (node) { + this.value = node; +}; +tree.Negative.prototype = { + type: "Negative", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + genCSS: function (env, output) { + output.add('-'); + this.value.genCSS(env, output); + }, + toCSS: tree.toCSS, + eval: function (env) { + if (env.isMathOn()) { + return (new(tree.Operation)('*', [new(tree.Dimension)(-1), this.value])).eval(env); + } + return new(tree.Negative)(this.value.eval(env)); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Operation = function (op, operands, isSpaced) { + this.op = op.trim(); + this.operands = operands; + this.isSpaced = isSpaced; +}; +tree.Operation.prototype = { + type: "Operation", + accept: function (visitor) { + this.operands = visitor.visit(this.operands); + }, + eval: function (env) { + var a = this.operands[0].eval(env), + b = this.operands[1].eval(env), + temp; + + if (env.isMathOn()) { + if (a instanceof tree.Dimension && b instanceof tree.Color) { + if (this.op === '*' || this.op === '+') { + temp = b, b = a, a = temp; + } else { + throw { type: "Operation", + message: "Can't substract or divide a color from a number" }; + } + } + if (!a.operate) { + throw { type: "Operation", + message: "Operation on an invalid type" }; + } + + return a.operate(env, this.op, b); + } else { + return new(tree.Operation)(this.op, [a, b], this.isSpaced); + } + }, + genCSS: function (env, output) { + this.operands[0].genCSS(env, output); + if (this.isSpaced) { + output.add(" "); + } + output.add(this.op); + if (this.isSpaced) { + output.add(" "); + } + this.operands[1].genCSS(env, output); + }, + toCSS: tree.toCSS +}; + +tree.operate = function (env, op, a, b) { + switch (op) { + case '+': return a + b; + case '-': return a - b; + case '*': return a * b; + case '/': return a / b; + } +}; + +})(require('../tree')); + + +(function (tree) { + +tree.Paren = function (node) { + this.value = node; +}; +tree.Paren.prototype = { + type: "Paren", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + genCSS: function (env, output) { + output.add('('); + this.value.genCSS(env, output); + output.add(')'); + }, + toCSS: tree.toCSS, + eval: function (env) { + return new(tree.Paren)(this.value.eval(env)); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Quoted = function (str, content, escaped, index, currentFileInfo) { + this.escaped = escaped; + this.value = content || ''; + this.quote = str.charAt(0); + this.index = index; + this.currentFileInfo = currentFileInfo; +}; +tree.Quoted.prototype = { + type: "Quoted", + genCSS: function (env, output) { + if (!this.escaped) { + output.add(this.quote, this.currentFileInfo, this.index); + } + output.add(this.value); + if (!this.escaped) { + output.add(this.quote); + } + }, + toCSS: tree.toCSS, + eval: function (env) { + var that = this; + var value = this.value.replace(/`([^`]+)`/g, function (_, exp) { + return new(tree.JavaScript)(exp, that.index, true).eval(env).value; + }).replace(/@\{([\w-]+)\}/g, function (_, name) { + var v = new(tree.Variable)('@' + name, that.index, that.currentFileInfo).eval(env, true); + return (v instanceof tree.Quoted) ? v.value : v.toCSS(); + }); + return new(tree.Quoted)(this.quote + value + this.quote, value, this.escaped, this.index, this.currentFileInfo); + }, + compare: function (x) { + if (!x.toCSS) { + return -1; + } + + var left = this.toCSS(), + right = x.toCSS(); + + if (left === right) { + return 0; + } + + return left < right ? -1 : 1; + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Rule = function (name, value, important, merge, index, currentFileInfo, inline) { + this.name = name; + this.value = (value instanceof tree.Value) ? value : new(tree.Value)([value]); + this.important = important ? ' ' + important.trim() : ''; + this.merge = merge; + this.index = index; + this.currentFileInfo = currentFileInfo; + this.inline = inline || false; + this.variable = (name.charAt(0) === '@'); +}; + +tree.Rule.prototype = { + type: "Rule", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + genCSS: function (env, output) { + output.add(this.name + (env.compress ? ':' : ': '), this.currentFileInfo, this.index); + try { + this.value.genCSS(env, output); + } + catch(e) { + e.index = this.index; + e.filename = this.currentFileInfo.filename; + throw e; + } + output.add(this.important + ((this.inline || (env.lastRule && env.compress)) ? "" : ";"), this.currentFileInfo, this.index); + }, + toCSS: tree.toCSS, + eval: function (env) { + var strictMathBypass = false; + if (this.name === "font" && !env.strictMath) { + strictMathBypass = true; + env.strictMath = true; + } + try { + return new(tree.Rule)(this.name, + this.value.eval(env), + this.important, + this.merge, + this.index, this.currentFileInfo, this.inline); + } + finally { + if (strictMathBypass) { + env.strictMath = false; + } + } + }, + makeImportant: function () { + return new(tree.Rule)(this.name, + this.value, + "!important", + this.merge, + this.index, this.currentFileInfo, this.inline); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Ruleset = function (selectors, rules, strictImports) { + this.selectors = selectors; + this.rules = rules; + this._lookups = {}; + this.strictImports = strictImports; +}; +tree.Ruleset.prototype = { + type: "Ruleset", + accept: function (visitor) { + if (this.paths) { + for(var i = 0; i < this.paths.length; i++) { + this.paths[i] = visitor.visit(this.paths[i]); + } + } else { + this.selectors = visitor.visit(this.selectors); + } + this.rules = visitor.visit(this.rules); + }, + eval: function (env) { + var selectors = this.selectors && this.selectors.map(function (s) { return s.eval(env); }); + var ruleset = new(tree.Ruleset)(selectors, this.rules.slice(0), this.strictImports); + var rules; + var rule; + var i; + + ruleset.originalRuleset = this; + ruleset.root = this.root; + ruleset.firstRoot = this.firstRoot; + ruleset.allowImports = this.allowImports; + + if(this.debugInfo) { + ruleset.debugInfo = this.debugInfo; + } + + // push the current ruleset to the frames stack + env.frames.unshift(ruleset); + + // currrent selectors + if (!env.selectors) { + env.selectors = []; + } + env.selectors.unshift(this.selectors); + + // Evaluate imports + if (ruleset.root || ruleset.allowImports || !ruleset.strictImports) { + ruleset.evalImports(env); + } + + // Store the frames around mixin definitions, + // so they can be evaluated like closures when the time comes. + for (i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.mixin.Definition) { + ruleset.rules[i].frames = env.frames.slice(0); + } + } + + var mediaBlockCount = (env.mediaBlocks && env.mediaBlocks.length) || 0; + + // Evaluate mixin calls. + for (i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.mixin.Call) { + /*jshint loopfunc:true */ + rules = ruleset.rules[i].eval(env).filter(function(r) { + if ((r instanceof tree.Rule) && r.variable) { + // do not pollute the scope if the variable is + // already there. consider returning false here + // but we need a way to "return" variable from mixins + return !(ruleset.variable(r.name)); + } + return true; + }); + ruleset.rules.splice.apply(ruleset.rules, [i, 1].concat(rules)); + i += rules.length-1; + ruleset.resetCache(); + } + } + + // Evaluate everything else + for (i = 0; i < ruleset.rules.length; i++) { + rule = ruleset.rules[i]; + + if (! (rule instanceof tree.mixin.Definition)) { + ruleset.rules[i] = rule.eval ? rule.eval(env) : rule; + } + } + + // Pop the stack + env.frames.shift(); + env.selectors.shift(); + + if (env.mediaBlocks) { + for (i = mediaBlockCount; i < env.mediaBlocks.length; i++) { + env.mediaBlocks[i].bubbleSelectors(selectors); + } + } + + return ruleset; + }, + evalImports: function(env) { + var i, rules; + for (i = 0; i < this.rules.length; i++) { + if (this.rules[i] instanceof tree.Import) { + rules = this.rules[i].eval(env); + if (typeof rules.length === "number") { + this.rules.splice.apply(this.rules, [i, 1].concat(rules)); + i+= rules.length-1; + } else { + this.rules.splice(i, 1, rules); + } + this.resetCache(); + } + } + }, + makeImportant: function() { + return new tree.Ruleset(this.selectors, this.rules.map(function (r) { + if (r.makeImportant) { + return r.makeImportant(); + } else { + return r; + } + }), this.strictImports); + }, + matchArgs: function (args) { + return !args || args.length === 0; + }, + matchCondition: function (args, env) { + var lastSelector = this.selectors[this.selectors.length-1]; + if (lastSelector.condition && + !lastSelector.condition.eval( + new(tree.evalEnv)(env, + env.frames))) { + return false; + } + return true; + }, + resetCache: function () { + this._rulesets = null; + this._variables = null; + this._lookups = {}; + }, + variables: function () { + if (this._variables) { return this._variables; } + else { + return this._variables = this.rules.reduce(function (hash, r) { + if (r instanceof tree.Rule && r.variable === true) { + hash[r.name] = r; + } + return hash; + }, {}); + } + }, + variable: function (name) { + return this.variables()[name]; + }, + rulesets: function () { + return this.rules.filter(function (r) { + return (r instanceof tree.Ruleset) || (r instanceof tree.mixin.Definition); + }); + }, + find: function (selector, self) { + self = self || this; + var rules = [], match, + key = selector.toCSS(); + + if (key in this._lookups) { return this._lookups[key]; } + + this.rulesets().forEach(function (rule) { + if (rule !== self) { + for (var j = 0; j < rule.selectors.length; j++) { + if (match = selector.match(rule.selectors[j])) { + if (selector.elements.length > rule.selectors[j].elements.length) { + Array.prototype.push.apply(rules, rule.find( + new(tree.Selector)(selector.elements.slice(1)), self)); + } else { + rules.push(rule); + } + break; + } + } + } + }); + return this._lookups[key] = rules; + }, + genCSS: function (env, output) { + var i, j, + ruleNodes = [], + rulesetNodes = [], + debugInfo, // Line number debugging + rule, + firstRuleset = true, + path; + + env.tabLevel = (env.tabLevel || 0); + + if (!this.root) { + env.tabLevel++; + } + + var tabRuleStr = env.compress ? '' : Array(env.tabLevel + 1).join(" "), + tabSetStr = env.compress ? '' : Array(env.tabLevel).join(" "); + + for (i = 0; i < this.rules.length; i++) { + rule = this.rules[i]; + if (rule.rules || (rule instanceof tree.Media) || rule instanceof tree.Directive || (this.root && rule instanceof tree.Comment)) { + rulesetNodes.push(rule); + } else { + ruleNodes.push(rule); + } + } + + // If this is the root node, we don't render + // a selector, or {}. + if (!this.root) { + debugInfo = tree.debugInfo(env, this, tabSetStr); + + if (debugInfo) { + output.add(debugInfo); + output.add(tabSetStr); + } + + for(i = 0; i < this.paths.length; i++) { + path = this.paths[i]; + env.firstSelector = true; + for(j = 0; j < path.length; j++) { + path[j].genCSS(env, output); + env.firstSelector = false; + } + if (i + 1 < this.paths.length) { + output.add(env.compress ? ',' : (',\n' + tabSetStr)); + } + } + + output.add((env.compress ? '{' : ' {\n') + tabRuleStr); + } + + // Compile rules and rulesets + for (i = 0; i < ruleNodes.length; i++) { + rule = ruleNodes[i]; + + // @page{ directive ends up with root elements inside it, a mix of rules and rulesets + // In this instance we do not know whether it is the last property + if (i + 1 === ruleNodes.length && (!this.root || rulesetNodes.length === 0 || this.firstRoot)) { + env.lastRule = true; + } + + if (rule.genCSS) { + rule.genCSS(env, output); + } else if (rule.value) { + output.add(rule.value.toString()); + } + + if (!env.lastRule) { + output.add(env.compress ? '' : ('\n' + tabRuleStr)); + } else { + env.lastRule = false; + } + } + + if (!this.root) { + output.add((env.compress ? '}' : '\n' + tabSetStr + '}')); + env.tabLevel--; + } + + for (i = 0; i < rulesetNodes.length; i++) { + if (ruleNodes.length && firstRuleset) { + output.add((env.compress ? "" : "\n") + (this.root ? tabRuleStr : tabSetStr)); + } + if (!firstRuleset) { + output.add((env.compress ? "" : "\n") + (this.root ? tabRuleStr : tabSetStr)); + } + firstRuleset = false; + rulesetNodes[i].genCSS(env, output); + } + + if (!output.isEmpty() && !env.compress && this.firstRoot) { + output.add('\n'); + } + }, + + toCSS: tree.toCSS, + + markReferenced: function () { + for (var s = 0; s < this.selectors.length; s++) { + this.selectors[s].markReferenced(); + } + }, + + joinSelectors: function (paths, context, selectors) { + for (var s = 0; s < selectors.length; s++) { + this.joinSelector(paths, context, selectors[s]); + } + }, + + joinSelector: function (paths, context, selector) { + + var i, j, k, + hasParentSelector, newSelectors, el, sel, parentSel, + newSelectorPath, afterParentJoin, newJoinedSelector, + newJoinedSelectorEmpty, lastSelector, currentElements, + selectorsMultiplied; + + for (i = 0; i < selector.elements.length; i++) { + el = selector.elements[i]; + if (el.value === '&') { + hasParentSelector = true; + } + } + + if (!hasParentSelector) { + if (context.length > 0) { + for (i = 0; i < context.length; i++) { + paths.push(context[i].concat(selector)); + } + } + else { + paths.push([selector]); + } + return; + } + + // The paths are [[Selector]] + // The first list is a list of comma seperated selectors + // The inner list is a list of inheritance seperated selectors + // e.g. + // .a, .b { + // .c { + // } + // } + // == [[.a] [.c]] [[.b] [.c]] + // + + // the elements from the current selector so far + currentElements = []; + // the current list of new selectors to add to the path. + // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors + // by the parents + newSelectors = [[]]; + + for (i = 0; i < selector.elements.length; i++) { + el = selector.elements[i]; + // non parent reference elements just get added + if (el.value !== "&") { + currentElements.push(el); + } else { + // the new list of selectors to add + selectorsMultiplied = []; + + // merge the current list of non parent selector elements + // on to the current list of selectors to add + if (currentElements.length > 0) { + this.mergeElementsOnToSelectors(currentElements, newSelectors); + } + + // loop through our current selectors + for (j = 0; j < newSelectors.length; j++) { + sel = newSelectors[j]; + // if we don't have any parent paths, the & might be in a mixin so that it can be used + // whether there are parents or not + if (context.length === 0) { + // the combinator used on el should now be applied to the next element instead so that + // it is not lost + if (sel.length > 0) { + sel[0].elements = sel[0].elements.slice(0); + sel[0].elements.push(new(tree.Element)(el.combinator, '', 0, el.index, el.currentFileInfo)); + } + selectorsMultiplied.push(sel); + } + else { + // and the parent selectors + for (k = 0; k < context.length; k++) { + parentSel = context[k]; + // We need to put the current selectors + // then join the last selector's elements on to the parents selectors + + // our new selector path + newSelectorPath = []; + // selectors from the parent after the join + afterParentJoin = []; + newJoinedSelectorEmpty = true; + + //construct the joined selector - if & is the first thing this will be empty, + // if not newJoinedSelector will be the last set of elements in the selector + if (sel.length > 0) { + newSelectorPath = sel.slice(0); + lastSelector = newSelectorPath.pop(); + newJoinedSelector = selector.createDerived(lastSelector.elements.slice(0)); + newJoinedSelectorEmpty = false; + } + else { + newJoinedSelector = selector.createDerived([]); + } + + //put together the parent selectors after the join + if (parentSel.length > 1) { + afterParentJoin = afterParentJoin.concat(parentSel.slice(1)); + } + + if (parentSel.length > 0) { + newJoinedSelectorEmpty = false; + + // join the elements so far with the first part of the parent + newJoinedSelector.elements.push(new(tree.Element)(el.combinator, parentSel[0].elements[0].value, el.index, el.currentFileInfo)); + newJoinedSelector.elements = newJoinedSelector.elements.concat(parentSel[0].elements.slice(1)); + } + + if (!newJoinedSelectorEmpty) { + // now add the joined selector + newSelectorPath.push(newJoinedSelector); + } + + // and the rest of the parent + newSelectorPath = newSelectorPath.concat(afterParentJoin); + + // add that to our new set of selectors + selectorsMultiplied.push(newSelectorPath); + } + } + } + + // our new selectors has been multiplied, so reset the state + newSelectors = selectorsMultiplied; + currentElements = []; + } + } + + // if we have any elements left over (e.g. .a& .b == .b) + // add them on to all the current selectors + if (currentElements.length > 0) { + this.mergeElementsOnToSelectors(currentElements, newSelectors); + } + + for (i = 0; i < newSelectors.length; i++) { + if (newSelectors[i].length > 0) { + paths.push(newSelectors[i]); + } + } + }, + + mergeElementsOnToSelectors: function(elements, selectors) { + var i, sel; + + if (selectors.length === 0) { + selectors.push([ new(tree.Selector)(elements) ]); + return; + } + + for (i = 0; i < selectors.length; i++) { + sel = selectors[i]; + + // if the previous thing in sel is a parent this needs to join on to it + if (sel.length > 0) { + sel[sel.length - 1] = sel[sel.length - 1].createDerived(sel[sel.length - 1].elements.concat(elements)); + } + else { + sel.push(new(tree.Selector)(elements)); + } + } + } +}; +})(require('../tree')); + +(function (tree) { + +tree.Selector = function (elements, extendList, condition, index, currentFileInfo, isReferenced) { + this.elements = elements; + this.extendList = extendList || []; + this.condition = condition; + this.currentFileInfo = currentFileInfo || {}; + this.isReferenced = isReferenced; + if (!condition) { + this.evaldCondition = true; + } +}; +tree.Selector.prototype = { + type: "Selector", + accept: function (visitor) { + this.elements = visitor.visit(this.elements); + this.extendList = visitor.visit(this.extendList); + this.condition = visitor.visit(this.condition); + }, + createDerived: function(elements, extendList, evaldCondition) { + /*jshint eqnull:true */ + evaldCondition = evaldCondition != null ? evaldCondition : this.evaldCondition; + var newSelector = new(tree.Selector)(elements, extendList || this.extendList, this.condition, this.index, this.currentFileInfo, this.isReferenced); + newSelector.evaldCondition = evaldCondition; + return newSelector; + }, + match: function (other) { + var elements = this.elements, + len = elements.length, + oelements, olen, max, i; + + oelements = other.elements.slice( + (other.elements.length && other.elements[0].value === "&") ? 1 : 0); + olen = oelements.length; + max = Math.min(len, olen); + + if (olen === 0 || len < olen) { + return false; + } else { + for (i = 0; i < max; i++) { + if (elements[i].value !== oelements[i].value) { + return false; + } + } + } + return true; + }, + eval: function (env) { + var evaldCondition = this.condition && this.condition.eval(env); + + return this.createDerived(this.elements.map(function (e) { + return e.eval(env); + }), this.extendList.map(function(extend) { + return extend.eval(env); + }), evaldCondition); + }, + genCSS: function (env, output) { + var i, element; + if ((!env || !env.firstSelector) && this.elements[0].combinator.value === "") { + output.add(' ', this.currentFileInfo, this.index); + } + if (!this._css) { + //TODO caching? speed comparison? + for(i = 0; i < this.elements.length; i++) { + element = this.elements[i]; + element.genCSS(env, output); + } + } + }, + toCSS: tree.toCSS, + markReferenced: function () { + this.isReferenced = true; + }, + getIsReferenced: function() { + return !this.currentFileInfo.reference || this.isReferenced; + }, + getIsOutput: function() { + return this.evaldCondition; + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.UnicodeDescriptor = function (value) { + this.value = value; +}; +tree.UnicodeDescriptor.prototype = { + type: "UnicodeDescriptor", + genCSS: function (env, output) { + output.add(this.value); + }, + toCSS: tree.toCSS, + eval: function () { return this; } +}; + +})(require('../tree')); + +(function (tree) { + +tree.URL = function (val, currentFileInfo) { + this.value = val; + this.currentFileInfo = currentFileInfo; +}; +tree.URL.prototype = { + type: "Url", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + genCSS: function (env, output) { + output.add("url("); + this.value.genCSS(env, output); + output.add(")"); + }, + toCSS: tree.toCSS, + eval: function (ctx) { + var val = this.value.eval(ctx), rootpath; + + // Add the base path if the URL is relative + rootpath = this.currentFileInfo && this.currentFileInfo.rootpath; + if (rootpath && typeof val.value === "string" && ctx.isPathRelative(val.value)) { + if (!val.quote) { + rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\"+match; }); + } + val.value = rootpath + val.value; + } + + val.value = ctx.normalizePath(val.value); + + return new(tree.URL)(val, null); + } +}; + +})(require('../tree')); + +(function (tree) { + +tree.Value = function (value) { + this.value = value; +}; +tree.Value.prototype = { + type: "Value", + accept: function (visitor) { + this.value = visitor.visit(this.value); + }, + eval: function (env) { + if (this.value.length === 1) { + return this.value[0].eval(env); + } else { + return new(tree.Value)(this.value.map(function (v) { + return v.eval(env); + })); + } + }, + genCSS: function (env, output) { + var i; + for(i = 0; i < this.value.length; i++) { + this.value[i].genCSS(env, output); + if (i+1 < this.value.length) { + output.add((env && env.compress) ? ',' : ', '); + } + } + }, + toCSS: tree.toCSS +}; + +})(require('../tree')); + +(function (tree) { + +tree.Variable = function (name, index, currentFileInfo) { + this.name = name; + this.index = index; + this.currentFileInfo = currentFileInfo; +}; +tree.Variable.prototype = { + type: "Variable", + eval: function (env) { + var variable, v, name = this.name; + + if (name.indexOf('@@') === 0) { + name = '@' + new(tree.Variable)(name.slice(1)).eval(env).value; + } + + if (this.evaluating) { + throw { type: 'Name', + message: "Recursive variable definition for " + name, + filename: this.currentFileInfo.file, + index: this.index }; + } + + this.evaluating = true; + + if (variable = tree.find(env.frames, function (frame) { + if (v = frame.variable(name)) { + return v.value.eval(env); + } + })) { + this.evaluating = false; + return variable; + } + else { + throw { type: 'Name', + message: "variable " + name + " is undefined", + filename: this.currentFileInfo.filename, + index: this.index }; + } + } +}; + +})(require('../tree')); + +(function (tree) { + + var parseCopyProperties = [ + 'paths', // option - unmodified - paths to search for imports on + 'optimization', // option - optimization level (for the chunker) + 'files', // list of files that have been imported, used for import-once + 'contents', // browser-only, contents of all the files + 'relativeUrls', // option - whether to adjust URL's to be relative + 'rootpath', // option - rootpath to append to URL's + 'strictImports', // option - + 'insecure', // option - whether to allow imports from insecure ssl hosts + 'dumpLineNumbers', // option - whether to dump line numbers + 'compress', // option - whether to compress + 'processImports', // option - whether to process imports. if false then imports will not be imported + 'syncImport', // option - whether to import synchronously + 'javascriptEnabled',// option - whether JavaScript is enabled. if undefined, defaults to true + 'mime', // browser only - mime type for sheet import + 'useFileCache', // browser only - whether to use the per file session cache + 'currentFileInfo' // information about the current file - for error reporting and importing and making urls relative etc. + ]; + + //currentFileInfo = { + // 'relativeUrls' - option - whether to adjust URL's to be relative + // 'filename' - full resolved filename of current file + // 'rootpath' - path to append to normal URLs for this node + // 'currentDirectory' - path to the current file, absolute + // 'rootFilename' - filename of the base file + // 'entryPath' - absolute path to the entry file + // 'reference' - whether the file should not be output and only output parts that are referenced + + tree.parseEnv = function(options) { + copyFromOriginal(options, this, parseCopyProperties); + + if (!this.contents) { this.contents = {}; } + if (!this.files) { this.files = {}; } + + if (!this.currentFileInfo) { + var filename = (options && options.filename) || "input"; + var entryPath = filename.replace(/[^\/\\]*$/, ""); + if (options) { + options.filename = null; + } + this.currentFileInfo = { + filename: filename, + relativeUrls: this.relativeUrls, + rootpath: (options && options.rootpath) || "", + currentDirectory: entryPath, + entryPath: entryPath, + rootFilename: filename + }; + } + }; + + var evalCopyProperties = [ + 'silent', // whether to swallow errors and warnings + 'verbose', // whether to log more activity + 'compress', // whether to compress + 'yuicompress', // whether to compress with the outside tool yui compressor + 'ieCompat', // whether to enforce IE compatibility (IE8 data-uri) + 'strictMath', // whether math has to be within parenthesis + 'strictUnits', // whether units need to evaluate correctly + 'cleancss', // whether to compress with clean-css + 'sourceMap', // whether to output a source map + 'importMultiple'// whether we are currently importing multiple copies + ]; + + tree.evalEnv = function(options, frames) { + copyFromOriginal(options, this, evalCopyProperties); + + this.frames = frames || []; + }; + + tree.evalEnv.prototype.inParenthesis = function () { + if (!this.parensStack) { + this.parensStack = []; + } + this.parensStack.push(true); + }; + + tree.evalEnv.prototype.outOfParenthesis = function () { + this.parensStack.pop(); + }; + + tree.evalEnv.prototype.isMathOn = function () { + return this.strictMath ? (this.parensStack && this.parensStack.length) : true; + }; + + tree.evalEnv.prototype.isPathRelative = function (path) { + return !/^(?:[a-z-]+:|\/)/.test(path); + }; + + tree.evalEnv.prototype.normalizePath = function( path ) { + var + segments = path.split("/").reverse(), + segment; + + path = []; + while (segments.length !== 0 ) { + segment = segments.pop(); + switch( segment ) { + case ".": + break; + case "..": + if ((path.length === 0) || (path[path.length - 1] === "..")) { + path.push( segment ); + } else { + path.pop(); + } + break; + default: + path.push( segment ); + break; + } + } + + return path.join("/"); + }; + + //todo - do the same for the toCSS env + //tree.toCSSEnv = function (options) { + //}; + + var copyFromOriginal = function(original, destination, propertiesToCopy) { + if (!original) { return; } + + for(var i = 0; i < propertiesToCopy.length; i++) { + if (original.hasOwnProperty(propertiesToCopy[i])) { + destination[propertiesToCopy[i]] = original[propertiesToCopy[i]]; + } + } + }; + +})(require('./tree')); + +(function (tree) { + + tree.visitor = function(implementation) { + this._implementation = implementation; + }; + + tree.visitor.prototype = { + visit: function(node) { + + if (node instanceof Array) { + return this.visitArray(node); + } + + if (!node || !node.type) { + return node; + } + + var funcName = "visit" + node.type, + func = this._implementation[funcName], + visitArgs, newNode; + if (func) { + visitArgs = {visitDeeper: true}; + newNode = func.call(this._implementation, node, visitArgs); + if (this._implementation.isReplacing) { + node = newNode; + } + } + if ((!visitArgs || visitArgs.visitDeeper) && node && node.accept) { + node.accept(this); + } + funcName = funcName + "Out"; + if (this._implementation[funcName]) { + this._implementation[funcName](node); + } + return node; + }, + visitArray: function(nodes) { + var i, newNodes = []; + for(i = 0; i < nodes.length; i++) { + var evald = this.visit(nodes[i]); + if (evald instanceof Array) { + evald = this.flatten(evald); + newNodes = newNodes.concat(evald); + } else { + newNodes.push(evald); + } + } + if (this._implementation.isReplacing) { + return newNodes; + } + return nodes; + }, + doAccept: function (node) { + node.accept(this); + }, + flatten: function(arr, master) { + return arr.reduce(this.flattenReduce.bind(this), master || []); + }, + flattenReduce: function(sum, element) { + if (element instanceof Array) { + sum = this.flatten(element, sum); + } else { + sum.push(element); + } + return sum; + } + }; + +})(require('./tree')); +(function (tree) { + tree.importVisitor = function(importer, finish, evalEnv) { + this._visitor = new tree.visitor(this); + this._importer = importer; + this._finish = finish; + this.env = evalEnv || new tree.evalEnv(); + this.importCount = 0; + }; + + tree.importVisitor.prototype = { + isReplacing: true, + run: function (root) { + var error; + try { + // process the contents + this._visitor.visit(root); + } + catch(e) { + error = e; + } + + this.isFinished = true; + + if (this.importCount === 0) { + this._finish(error); + } + }, + visitImport: function (importNode, visitArgs) { + var importVisitor = this, + evaldImportNode, + inlineCSS = importNode.options.inline; + + if (!importNode.css || inlineCSS) { + + try { + evaldImportNode = importNode.evalForImport(this.env); + } catch(e){ + if (!e.filename) { e.index = importNode.index; e.filename = importNode.currentFileInfo.filename; } + // attempt to eval properly and treat as css + importNode.css = true; + // if that fails, this error will be thrown + importNode.error = e; + } + + if (evaldImportNode && (!evaldImportNode.css || inlineCSS)) { + importNode = evaldImportNode; + this.importCount++; + var env = new tree.evalEnv(this.env, this.env.frames.slice(0)); + + if (importNode.options.multiple) { + env.importMultiple = true; + } + + this._importer.push(importNode.getPath(), importNode.currentFileInfo, importNode.options, function (e, root, imported, fullPath) { + if (e && !e.filename) { e.index = importNode.index; e.filename = importNode.currentFileInfo.filename; } + + if (imported && !env.importMultiple) { importNode.skip = imported; } + + var subFinish = function(e) { + importVisitor.importCount--; + + if (importVisitor.importCount === 0 && importVisitor.isFinished) { + importVisitor._finish(e); + } + }; + + if (root) { + importNode.root = root; + importNode.importedFilename = fullPath; + if (!inlineCSS && !importNode.skip) { + new(tree.importVisitor)(importVisitor._importer, subFinish, env) + .run(root); + return; + } + } + + subFinish(); + }); + } + } + visitArgs.visitDeeper = false; + return importNode; + }, + visitRule: function (ruleNode, visitArgs) { + visitArgs.visitDeeper = false; + return ruleNode; + }, + visitDirective: function (directiveNode, visitArgs) { + this.env.frames.unshift(directiveNode); + return directiveNode; + }, + visitDirectiveOut: function (directiveNode) { + this.env.frames.shift(); + }, + visitMixinDefinition: function (mixinDefinitionNode, visitArgs) { + this.env.frames.unshift(mixinDefinitionNode); + return mixinDefinitionNode; + }, + visitMixinDefinitionOut: function (mixinDefinitionNode) { + this.env.frames.shift(); + }, + visitRuleset: function (rulesetNode, visitArgs) { + this.env.frames.unshift(rulesetNode); + return rulesetNode; + }, + visitRulesetOut: function (rulesetNode) { + this.env.frames.shift(); + }, + visitMedia: function (mediaNode, visitArgs) { + this.env.frames.unshift(mediaNode.ruleset); + return mediaNode; + }, + visitMediaOut: function (mediaNode) { + this.env.frames.shift(); + } + }; + +})(require('./tree')); +(function (tree) { + tree.joinSelectorVisitor = function() { + this.contexts = [[]]; + this._visitor = new tree.visitor(this); + }; + + tree.joinSelectorVisitor.prototype = { + run: function (root) { + return this._visitor.visit(root); + }, + visitRule: function (ruleNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitMixinDefinition: function (mixinDefinitionNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + + visitRuleset: function (rulesetNode, visitArgs) { + var context = this.contexts[this.contexts.length - 1]; + var paths = []; + this.contexts.push(paths); + + if (! rulesetNode.root) { + rulesetNode.selectors = rulesetNode.selectors.filter(function(selector) { return selector.getIsOutput(); }); + if (rulesetNode.selectors.length === 0) { + rulesetNode.rules.length = 0; + } + rulesetNode.joinSelectors(paths, context, rulesetNode.selectors); + rulesetNode.paths = paths; + } + }, + visitRulesetOut: function (rulesetNode) { + this.contexts.length = this.contexts.length - 1; + }, + visitMedia: function (mediaNode, visitArgs) { + var context = this.contexts[this.contexts.length - 1]; + mediaNode.rules[0].root = (context.length === 0 || context[0].multiMedia); + } + }; + +})(require('./tree')); +(function (tree) { + tree.toCSSVisitor = function(env) { + this._visitor = new tree.visitor(this); + this._env = env; + }; + + tree.toCSSVisitor.prototype = { + isReplacing: true, + run: function (root) { + return this._visitor.visit(root); + }, + + visitRule: function (ruleNode, visitArgs) { + if (ruleNode.variable) { + return []; + } + return ruleNode; + }, + + visitMixinDefinition: function (mixinNode, visitArgs) { + return []; + }, + + visitExtend: function (extendNode, visitArgs) { + return []; + }, + + visitComment: function (commentNode, visitArgs) { + if (commentNode.isSilent(this._env)) { + return []; + } + return commentNode; + }, + + visitMedia: function(mediaNode, visitArgs) { + mediaNode.accept(this._visitor); + visitArgs.visitDeeper = false; + + if (!mediaNode.rules.length) { + return []; + } + return mediaNode; + }, + + visitDirective: function(directiveNode, visitArgs) { + if (directiveNode.currentFileInfo.reference && !directiveNode.isReferenced) { + return []; + } + if (directiveNode.name === "@charset") { + // Only output the debug info together with subsequent @charset definitions + // a comment (or @media statement) before the actual @charset directive would + // be considered illegal css as it has to be on the first line + if (this.charset) { + if (directiveNode.debugInfo) { + var comment = new tree.Comment("/* " + directiveNode.toCSS(this._env).replace(/\n/g, "")+" */\n"); + comment.debugInfo = directiveNode.debugInfo; + return this._visitor.visit(comment); + } + return []; + } + this.charset = true; + } + return directiveNode; + }, + + checkPropertiesInRoot: function(rules) { + var ruleNode; + for(var i = 0; i < rules.length; i++) { + ruleNode = rules[i]; + if (ruleNode instanceof tree.Rule && !ruleNode.variable) { + throw { message: "properties must be inside selector blocks, they cannot be in the root.", + index: ruleNode.index, filename: ruleNode.currentFileInfo ? ruleNode.currentFileInfo.filename : null}; + } + } + }, + + visitRuleset: function (rulesetNode, visitArgs) { + var rule, rulesets = []; + if (rulesetNode.firstRoot) { + this.checkPropertiesInRoot(rulesetNode.rules); + } + if (! rulesetNode.root) { + + rulesetNode.paths = rulesetNode.paths + .filter(function(p) { + var i; + if (p[0].elements[0].combinator.value === ' ') { + p[0].elements[0].combinator = new(tree.Combinator)(''); + } + for(i = 0; i < p.length; i++) { + if (p[i].getIsReferenced() && p[i].getIsOutput()) { + return true; + } + return false; + } + }); + + // Compile rules and rulesets + for (var i = 0; i < rulesetNode.rules.length; i++) { + rule = rulesetNode.rules[i]; + + if (rule.rules) { + // visit because we are moving them out from being a child + rulesets.push(this._visitor.visit(rule)); + rulesetNode.rules.splice(i, 1); + i--; + continue; + } + } + // accept the visitor to remove rules and refactor itself + // then we can decide now whether we want it or not + if (rulesetNode.rules.length > 0) { + rulesetNode.accept(this._visitor); + } + visitArgs.visitDeeper = false; + + this._mergeRules(rulesetNode.rules); + this._removeDuplicateRules(rulesetNode.rules); + + // now decide whether we keep the ruleset + if (rulesetNode.rules.length > 0 && rulesetNode.paths.length > 0) { + rulesets.splice(0, 0, rulesetNode); + } + } else { + rulesetNode.accept(this._visitor); + visitArgs.visitDeeper = false; + if (rulesetNode.firstRoot || rulesetNode.rules.length > 0) { + rulesets.splice(0, 0, rulesetNode); + } + } + if (rulesets.length === 1) { + return rulesets[0]; + } + return rulesets; + }, + + _removeDuplicateRules: function(rules) { + // remove duplicates + var ruleCache = {}, + ruleList, rule, i; + for(i = rules.length - 1; i >= 0 ; i--) { + rule = rules[i]; + if (rule instanceof tree.Rule) { + if (!ruleCache[rule.name]) { + ruleCache[rule.name] = rule; + } else { + ruleList = ruleCache[rule.name]; + if (ruleList instanceof tree.Rule) { + ruleList = ruleCache[rule.name] = [ruleCache[rule.name].toCSS(this._env)]; + } + var ruleCSS = rule.toCSS(this._env); + if (ruleList.indexOf(ruleCSS) !== -1) { + rules.splice(i, 1); + } else { + ruleList.push(ruleCSS); + } + } + } + } + }, + + _mergeRules: function (rules) { + var groups = {}, + parts, + rule, + key; + + for (var i = 0; i < rules.length; i++) { + rule = rules[i]; + + if ((rule instanceof tree.Rule) && rule.merge) { + key = [rule.name, + rule.important ? "!" : ""].join(","); + + if (!groups[key]) { + parts = groups[key] = []; + } else { + rules.splice(i--, 1); + } + + parts.push(rule); + } + } + + Object.keys(groups).map(function (k) { + parts = groups[k]; + + if (parts.length > 1) { + rule = parts[0]; + + rule.value = new (tree.Value)(parts.map(function (p) { + return p.value; + })); + } + }); + } + }; + +})(require('./tree')); +(function (tree) { + /*jshint loopfunc:true */ + + tree.extendFinderVisitor = function() { + this._visitor = new tree.visitor(this); + this.contexts = []; + this.allExtendsStack = [[]]; + }; + + tree.extendFinderVisitor.prototype = { + run: function (root) { + root = this._visitor.visit(root); + root.allExtends = this.allExtendsStack[0]; + return root; + }, + visitRule: function (ruleNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitMixinDefinition: function (mixinDefinitionNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitRuleset: function (rulesetNode, visitArgs) { + + if (rulesetNode.root) { + return; + } + + var i, j, extend, allSelectorsExtendList = [], extendList; + + // get &:extend(.a); rules which apply to all selectors in this ruleset + for(i = 0; i < rulesetNode.rules.length; i++) { + if (rulesetNode.rules[i] instanceof tree.Extend) { + allSelectorsExtendList.push(rulesetNode.rules[i]); + rulesetNode.extendOnEveryPath = true; + } + } + + // now find every selector and apply the extends that apply to all extends + // and the ones which apply to an individual extend + for(i = 0; i < rulesetNode.paths.length; i++) { + var selectorPath = rulesetNode.paths[i], + selector = selectorPath[selectorPath.length-1]; + extendList = selector.extendList.slice(0).concat(allSelectorsExtendList).map(function(allSelectorsExtend) { + return allSelectorsExtend.clone(); + }); + for(j = 0; j < extendList.length; j++) { + this.foundExtends = true; + extend = extendList[j]; + extend.findSelfSelectors(selectorPath); + extend.ruleset = rulesetNode; + if (j === 0) { extend.firstExtendOnThisSelectorPath = true; } + this.allExtendsStack[this.allExtendsStack.length-1].push(extend); + } + } + + this.contexts.push(rulesetNode.selectors); + }, + visitRulesetOut: function (rulesetNode) { + if (!rulesetNode.root) { + this.contexts.length = this.contexts.length - 1; + } + }, + visitMedia: function (mediaNode, visitArgs) { + mediaNode.allExtends = []; + this.allExtendsStack.push(mediaNode.allExtends); + }, + visitMediaOut: function (mediaNode) { + this.allExtendsStack.length = this.allExtendsStack.length - 1; + }, + visitDirective: function (directiveNode, visitArgs) { + directiveNode.allExtends = []; + this.allExtendsStack.push(directiveNode.allExtends); + }, + visitDirectiveOut: function (directiveNode) { + this.allExtendsStack.length = this.allExtendsStack.length - 1; + } + }; + + tree.processExtendsVisitor = function() { + this._visitor = new tree.visitor(this); + }; + + tree.processExtendsVisitor.prototype = { + run: function(root) { + var extendFinder = new tree.extendFinderVisitor(); + extendFinder.run(root); + if (!extendFinder.foundExtends) { return root; } + root.allExtends = root.allExtends.concat(this.doExtendChaining(root.allExtends, root.allExtends)); + this.allExtendsStack = [root.allExtends]; + return this._visitor.visit(root); + }, + doExtendChaining: function (extendsList, extendsListTarget, iterationCount) { + // + // chaining is different from normal extension.. if we extend an extend then we are not just copying, altering and pasting + // the selector we would do normally, but we are also adding an extend with the same target selector + // this means this new extend can then go and alter other extends + // + // this method deals with all the chaining work - without it, extend is flat and doesn't work on other extend selectors + // this is also the most expensive.. and a match on one selector can cause an extension of a selector we had already processed if + // we look at each selector at a time, as is done in visitRuleset + + var extendIndex, targetExtendIndex, matches, extendsToAdd = [], newSelector, extendVisitor = this, selectorPath, extend, targetExtend, newExtend; + + iterationCount = iterationCount || 0; + + //loop through comparing every extend with every target extend. + // a target extend is the one on the ruleset we are looking at copy/edit/pasting in place + // e.g. .a:extend(.b) {} and .b:extend(.c) {} then the first extend extends the second one + // and the second is the target. + // the seperation into two lists allows us to process a subset of chains with a bigger set, as is the + // case when processing media queries + for(extendIndex = 0; extendIndex < extendsList.length; extendIndex++){ + for(targetExtendIndex = 0; targetExtendIndex < extendsListTarget.length; targetExtendIndex++){ + + extend = extendsList[extendIndex]; + targetExtend = extendsListTarget[targetExtendIndex]; + + // look for circular references + if (this.inInheritanceChain(targetExtend, extend)) { continue; } + + // find a match in the target extends self selector (the bit before :extend) + selectorPath = [targetExtend.selfSelectors[0]]; + matches = extendVisitor.findMatch(extend, selectorPath); + + if (matches.length) { + + // we found a match, so for each self selector.. + extend.selfSelectors.forEach(function(selfSelector) { + + // process the extend as usual + newSelector = extendVisitor.extendSelector(matches, selectorPath, selfSelector); + + // but now we create a new extend from it + newExtend = new(tree.Extend)(targetExtend.selector, targetExtend.option, 0); + newExtend.selfSelectors = newSelector; + + // add the extend onto the list of extends for that selector + newSelector[newSelector.length-1].extendList = [newExtend]; + + // record that we need to add it. + extendsToAdd.push(newExtend); + newExtend.ruleset = targetExtend.ruleset; + + //remember its parents for circular references + newExtend.parents = [targetExtend, extend]; + + // only process the selector once.. if we have :extend(.a,.b) then multiple + // extends will look at the same selector path, so when extending + // we know that any others will be duplicates in terms of what is added to the css + if (targetExtend.firstExtendOnThisSelectorPath) { + newExtend.firstExtendOnThisSelectorPath = true; + targetExtend.ruleset.paths.push(newSelector); + } + }); + } + } + } + + if (extendsToAdd.length) { + // try to detect circular references to stop a stack overflow. + // may no longer be needed. + this.extendChainCount++; + if (iterationCount > 100) { + var selectorOne = "{unable to calculate}"; + var selectorTwo = "{unable to calculate}"; + try + { + selectorOne = extendsToAdd[0].selfSelectors[0].toCSS(); + selectorTwo = extendsToAdd[0].selector.toCSS(); + } + catch(e) {} + throw {message: "extend circular reference detected. One of the circular extends is currently:"+selectorOne+":extend(" + selectorTwo+")"}; + } + + // now process the new extends on the existing rules so that we can handle a extending b extending c ectending d extending e... + return extendsToAdd.concat(extendVisitor.doExtendChaining(extendsToAdd, extendsListTarget, iterationCount+1)); + } else { + return extendsToAdd; + } + }, + inInheritanceChain: function (possibleParent, possibleChild) { + if (possibleParent === possibleChild) { + return true; + } + if (possibleChild.parents) { + if (this.inInheritanceChain(possibleParent, possibleChild.parents[0])) { + return true; + } + if (this.inInheritanceChain(possibleParent, possibleChild.parents[1])) { + return true; + } + } + return false; + }, + visitRule: function (ruleNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitMixinDefinition: function (mixinDefinitionNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitSelector: function (selectorNode, visitArgs) { + visitArgs.visitDeeper = false; + }, + visitRuleset: function (rulesetNode, visitArgs) { + if (rulesetNode.root) { + return; + } + var matches, pathIndex, extendIndex, allExtends = this.allExtendsStack[this.allExtendsStack.length-1], selectorsToAdd = [], extendVisitor = this, selectorPath; + + // look at each selector path in the ruleset, find any extend matches and then copy, find and replace + + for(extendIndex = 0; extendIndex < allExtends.length; extendIndex++) { + for(pathIndex = 0; pathIndex < rulesetNode.paths.length; pathIndex++) { + + selectorPath = rulesetNode.paths[pathIndex]; + + // extending extends happens initially, before the main pass + if (rulesetNode.extendOnEveryPath || selectorPath[selectorPath.length-1].extendList.length) { continue; } + + matches = this.findMatch(allExtends[extendIndex], selectorPath); + + if (matches.length) { + + allExtends[extendIndex].selfSelectors.forEach(function(selfSelector) { + selectorsToAdd.push(extendVisitor.extendSelector(matches, selectorPath, selfSelector)); + }); + } + } + } + rulesetNode.paths = rulesetNode.paths.concat(selectorsToAdd); + }, + findMatch: function (extend, haystackSelectorPath) { + // + // look through the haystack selector path to try and find the needle - extend.selector + // returns an array of selector matches that can then be replaced + // + var haystackSelectorIndex, hackstackSelector, hackstackElementIndex, haystackElement, + targetCombinator, i, + extendVisitor = this, + needleElements = extend.selector.elements, + potentialMatches = [], potentialMatch, matches = []; + + // loop through the haystack elements + for(haystackSelectorIndex = 0; haystackSelectorIndex < haystackSelectorPath.length; haystackSelectorIndex++) { + hackstackSelector = haystackSelectorPath[haystackSelectorIndex]; + + for(hackstackElementIndex = 0; hackstackElementIndex < hackstackSelector.elements.length; hackstackElementIndex++) { + + haystackElement = hackstackSelector.elements[hackstackElementIndex]; + + // if we allow elements before our match we can add a potential match every time. otherwise only at the first element. + if (extend.allowBefore || (haystackSelectorIndex === 0 && hackstackElementIndex === 0)) { + potentialMatches.push({pathIndex: haystackSelectorIndex, index: hackstackElementIndex, matched: 0, initialCombinator: haystackElement.combinator}); + } + + for(i = 0; i < potentialMatches.length; i++) { + potentialMatch = potentialMatches[i]; + + // selectors add " " onto the first element. When we use & it joins the selectors together, but if we don't + // then each selector in haystackSelectorPath has a space before it added in the toCSS phase. so we need to work out + // what the resulting combinator will be + targetCombinator = haystackElement.combinator.value; + if (targetCombinator === '' && hackstackElementIndex === 0) { + targetCombinator = ' '; + } + + // if we don't match, null our match to indicate failure + if (!extendVisitor.isElementValuesEqual(needleElements[potentialMatch.matched].value, haystackElement.value) || + (potentialMatch.matched > 0 && needleElements[potentialMatch.matched].combinator.value !== targetCombinator)) { + potentialMatch = null; + } else { + potentialMatch.matched++; + } + + // if we are still valid and have finished, test whether we have elements after and whether these are allowed + if (potentialMatch) { + potentialMatch.finished = potentialMatch.matched === needleElements.length; + if (potentialMatch.finished && + (!extend.allowAfter && (hackstackElementIndex+1 < hackstackSelector.elements.length || haystackSelectorIndex+1 < haystackSelectorPath.length))) { + potentialMatch = null; + } + } + // if null we remove, if not, we are still valid, so either push as a valid match or continue + if (potentialMatch) { + if (potentialMatch.finished) { + potentialMatch.length = needleElements.length; + potentialMatch.endPathIndex = haystackSelectorIndex; + potentialMatch.endPathElementIndex = hackstackElementIndex + 1; // index after end of match + potentialMatches.length = 0; // we don't allow matches to overlap, so start matching again + matches.push(potentialMatch); + } + } else { + potentialMatches.splice(i, 1); + i--; + } + } + } + } + return matches; + }, + isElementValuesEqual: function(elementValue1, elementValue2) { + if (typeof elementValue1 === "string" || typeof elementValue2 === "string") { + return elementValue1 === elementValue2; + } + if (elementValue1 instanceof tree.Attribute) { + if (elementValue1.op !== elementValue2.op || elementValue1.key !== elementValue2.key) { + return false; + } + if (!elementValue1.value || !elementValue2.value) { + if (elementValue1.value || elementValue2.value) { + return false; + } + return true; + } + elementValue1 = elementValue1.value.value || elementValue1.value; + elementValue2 = elementValue2.value.value || elementValue2.value; + return elementValue1 === elementValue2; + } + elementValue1 = elementValue1.value; + elementValue2 = elementValue2.value; + if (elementValue1 instanceof tree.Selector) { + if (!(elementValue2 instanceof tree.Selector) || elementValue1.elements.length !== elementValue2.elements.length) { + return false; + } + for(var i = 0; i currentSelectorPathIndex && currentSelectorPathElementIndex > 0) { + path[path.length - 1].elements = path[path.length - 1].elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex)); + currentSelectorPathElementIndex = 0; + currentSelectorPathIndex++; + } + + newElements = selector.elements + .slice(currentSelectorPathElementIndex, match.index) + .concat([firstElement]) + .concat(replacementSelector.elements.slice(1)); + + if (currentSelectorPathIndex === match.pathIndex && matchIndex > 0) { + path[path.length - 1].elements = + path[path.length - 1].elements.concat(newElements); + } else { + path = path.concat(selectorPath.slice(currentSelectorPathIndex, match.pathIndex)); + + path.push(new tree.Selector( + newElements + )); + } + currentSelectorPathIndex = match.endPathIndex; + currentSelectorPathElementIndex = match.endPathElementIndex; + if (currentSelectorPathElementIndex >= selectorPath[currentSelectorPathIndex].elements.length) { + currentSelectorPathElementIndex = 0; + currentSelectorPathIndex++; + } + } + + if (currentSelectorPathIndex < selectorPath.length && currentSelectorPathElementIndex > 0) { + path[path.length - 1].elements = path[path.length - 1].elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex)); + currentSelectorPathIndex++; + } + + path = path.concat(selectorPath.slice(currentSelectorPathIndex, selectorPath.length)); + + return path; + }, + visitRulesetOut: function (rulesetNode) { + }, + visitMedia: function (mediaNode, visitArgs) { + var newAllExtends = mediaNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]); + newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, mediaNode.allExtends)); + this.allExtendsStack.push(newAllExtends); + }, + visitMediaOut: function (mediaNode) { + this.allExtendsStack.length = this.allExtendsStack.length - 1; + }, + visitDirective: function (directiveNode, visitArgs) { + var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length-1]); + newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, directiveNode.allExtends)); + this.allExtendsStack.push(newAllExtends); + }, + visitDirectiveOut: function (directiveNode) { + this.allExtendsStack.length = this.allExtendsStack.length - 1; + } + }; + +})(require('./tree')); + +(function (tree) { + + tree.sourceMapOutput = function (options) { + this._css = []; + this._rootNode = options.rootNode; + this._writeSourceMap = options.writeSourceMap; + this._contentsMap = options.contentsMap; + this._sourceMapFilename = options.sourceMapFilename; + this._outputFilename = options.outputFilename; + this._sourceMapBasepath = options.sourceMapBasepath; + this._sourceMapRootpath = options.sourceMapRootpath; + this._outputSourceFiles = options.outputSourceFiles; + this._sourceMapGeneratorConstructor = options.sourceMapGenerator || require("source-map").SourceMapGenerator; + + if (this._sourceMapRootpath && this._sourceMapRootpath.charAt(this._sourceMapRootpath.length-1) !== '/') { + this._sourceMapRootpath += '/'; + } + + this._lineNumber = 0; + this._column = 0; + }; + + tree.sourceMapOutput.prototype.normalizeFilename = function(filename) { + if (this._sourceMapBasepath && filename.indexOf(this._sourceMapBasepath) === 0) { + filename = filename.substring(this._sourceMapBasepath.length); + if (filename.charAt(0) === '\\' || filename.charAt(0) === '/') { + filename = filename.substring(1); + } + } + return (this._sourceMapRootpath || "") + filename.replace(/\\/g, '/'); + }; + + tree.sourceMapOutput.prototype.add = function(chunk, fileInfo, index, mapLines) { + + //ignore adding empty strings + if (!chunk) { + return; + } + + var lines, + sourceLines, + columns, + sourceColumns, + i; + + if (fileInfo) { + var inputSource = this._contentsMap[fileInfo.filename].substring(0, index); + sourceLines = inputSource.split("\n"); + sourceColumns = sourceLines[sourceLines.length-1]; + } + + lines = chunk.split("\n"); + columns = lines[lines.length-1]; + + if (fileInfo) { + if (!mapLines) { + this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + 1, column: this._column}, + original: { line: sourceLines.length, column: sourceColumns.length}, + source: this.normalizeFilename(fileInfo.filename)}); + } else { + for(i = 0; i < lines.length; i++) { + this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + i + 1, column: i === 0 ? this._column : 0}, + original: { line: sourceLines.length + i, column: i === 0 ? sourceColumns.length : 0}, + source: this.normalizeFilename(fileInfo.filename)}); + } + } + } + + if (lines.length === 1) { + this._column += columns.length; + } else { + this._lineNumber += lines.length - 1; + this._column = columns.length; + } + + this._css.push(chunk); + }; + + tree.sourceMapOutput.prototype.isEmpty = function() { + return this._css.length === 0; + }; + + tree.sourceMapOutput.prototype.toCSS = function(env) { + this._sourceMapGenerator = new this._sourceMapGeneratorConstructor({ file: this._outputFilename, sourceRoot: null }); + + if (this._outputSourceFiles) { + for(var filename in this._contentsMap) { + this._sourceMapGenerator.setSourceContent(this.normalizeFilename(filename), this._contentsMap[filename]); + } + } + + this._rootNode.genCSS(env, this); + + if (this._css.length > 0) { + var sourceMapFilename, + sourceMapContent = JSON.stringify(this._sourceMapGenerator.toJSON()); + + if (this._sourceMapFilename) { + sourceMapFilename = this.normalizeFilename(this._sourceMapFilename); + } + + if (this._writeSourceMap) { + this._writeSourceMap(sourceMapContent); + } else { + sourceMapFilename = "data:application/json," + encodeURIComponent(sourceMapContent); + } + + if (sourceMapFilename) { + this._css.push("/*# sourceMappingURL=" + sourceMapFilename + " */"); + } + } + + return this._css.join(''); + }; + +})(require('./tree')); + +// +// browser.js - client-side engine +// +/*global less, window, document, XMLHttpRequest, location */ + +var isFileProtocol = /^(file|chrome(-extension)?|resource|qrc|app):/.test(location.protocol); + +less.env = less.env || (location.hostname == '127.0.0.1' || + location.hostname == '0.0.0.0' || + location.hostname == 'localhost' || + location.port.length > 0 || + isFileProtocol ? 'development' + : 'production'); + +var logLevel = { + info: 2, + errors: 1, + none: 0 +}; + +// The amount of logging in the javascript console. +// 2 - Information and errors +// 1 - Errors +// 0 - None +// Defaults to 2 +less.logLevel = typeof(less.logLevel) != 'undefined' ? less.logLevel : logLevel.info; + +// Load styles asynchronously (default: false) +// +// This is set to `false` by default, so that the body +// doesn't start loading before the stylesheets are parsed. +// Setting this to `true` can result in flickering. +// +less.async = less.async || false; +less.fileAsync = less.fileAsync || false; + +// Interval between watch polls +less.poll = less.poll || (isFileProtocol ? 1000 : 1500); + +//Setup user functions +if (less.functions) { + for(var func in less.functions) { + less.tree.functions[func] = less.functions[func]; + } +} + +var dumpLineNumbers = /!dumpLineNumbers:(comments|mediaquery|all)/.exec(location.hash); +if (dumpLineNumbers) { + less.dumpLineNumbers = dumpLineNumbers[1]; +} + +var typePattern = /^text\/(x-)?less$/; +var cache = null; +var fileCache = {}; + +function log(str, level) { + if (less.env == 'development' && typeof(console) !== 'undefined' && less.logLevel >= level) { + console.log('less: ' + str); + } +} + +function extractId(href) { + return href.replace(/^[a-z-]+:\/+?[^\/]+/, '' ) // Remove protocol & domain + .replace(/^\//, '' ) // Remove root / + .replace(/\.[a-zA-Z]+$/, '' ) // Remove simple extension + .replace(/[^\.\w-]+/g, '-') // Replace illegal characters + .replace(/\./g, ':'); // Replace dots with colons(for valid id) +} + +function errorConsole(e, rootHref) { + var template = '{line} {content}'; + var filename = e.filename || rootHref; + var errors = []; + var content = (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') + + " in " + filename + " "; + + var errorline = function (e, i, classname) { + if (e.extract[i] !== undefined) { + errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1)) + .replace(/\{class\}/, classname) + .replace(/\{content\}/, e.extract[i])); + } + }; + + if (e.extract) { + errorline(e, 0, ''); + errorline(e, 1, 'line'); + errorline(e, 2, ''); + content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':\n' + + errors.join('\n'); + } else if (e.stack) { + content += e.stack; + } + log(content, logLevel.errors); +} + +function createCSS(styles, sheet, lastModified) { + // Strip the query-string + var href = sheet.href || ''; + + // If there is no title set, use the filename, minus the extension + var id = 'less:' + (sheet.title || extractId(href)); + + // If this has already been inserted into the DOM, we may need to replace it + var oldCss = document.getElementById(id); + var keepOldCss = false; + + // Create a new stylesheet node for insertion or (if necessary) replacement + var css = document.createElement('style'); + css.setAttribute('type', 'text/css'); + if (sheet.media) { + css.setAttribute('media', sheet.media); + } + css.id = id; + + if (css.styleSheet) { // IE + try { + css.styleSheet.cssText = styles; + } catch (e) { + throw new(Error)("Couldn't reassign styleSheet.cssText."); + } + } else { + css.appendChild(document.createTextNode(styles)); + + // If new contents match contents of oldCss, don't replace oldCss + keepOldCss = (oldCss !== null && oldCss.childNodes.length > 0 && css.childNodes.length > 0 && + oldCss.firstChild.nodeValue === css.firstChild.nodeValue); + } + + var head = document.getElementsByTagName('head')[0]; + + // If there is no oldCss, just append; otherwise, only append if we need + // to replace oldCss with an updated stylesheet + if (oldCss === null || keepOldCss === false) { + var nextEl = sheet && sheet.nextSibling || null; + if (nextEl) { + nextEl.parentNode.insertBefore(css, nextEl); + } else { + head.appendChild(css); + } + } + if (oldCss && keepOldCss === false) { + oldCss.parentNode.removeChild(oldCss); + } + + // Don't update the local store if the file wasn't modified + if (lastModified && cache) { + log('saving ' + href + ' to cache.', logLevel.info); + try { + cache.setItem(href, styles); + cache.setItem(href + ':timestamp', lastModified); + } catch(e) { + //TODO - could do with adding more robust error handling + log('failed to save', logLevel.errors); + } + } +} + +function errorHTML(e, rootHref) { + var id = 'less-error-message:' + extractId(rootHref || ""); + var template = '
  • {content}
    • '; + var elem = document.createElement('div'), timer, content, errors = []; + var filename = e.filename || rootHref; + var filenameNoPath = filename.match(/([^\/]+(\?.*)?)$/)[1]; + + elem.id = id; + elem.className = "less-error-message"; + + content = '

    ' + (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') + + '

    ' + '

    in ' + filenameNoPath + " "; + + var errorline = function (e, i, classname) { + if (e.extract[i] !== undefined) { + errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1)) + .replace(/\{class\}/, classname) + .replace(/\{content\}/, e.extract[i])); + } + }; + + if (e.extract) { + errorline(e, 0, ''); + errorline(e, 1, 'line'); + errorline(e, 2, ''); + content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':

    ' + + ''; + } else if (e.stack) { + content += '
    ' + e.stack.split('\n').slice(1).join('
    '); + } + elem.innerHTML = content; + + // CSS for error messages + createCSS([ + '.less-error-message ul, .less-error-message li {', + 'list-style-type: none;', + 'margin-right: 15px;', + 'padding: 4px 0;', + 'margin: 0;', + '}', + '.less-error-message label {', + 'font-size: 12px;', + 'margin-right: 15px;', + 'padding: 4px 0;', + 'color: #cc7777;', + '}', + '.less-error-message pre {', + 'color: #dd6666;', + 'padding: 4px 0;', + 'margin: 0;', + 'display: inline-block;', + '}', + '.less-error-message pre.line {', + 'color: #ff0000;', + '}', + '.less-error-message h3 {', + 'font-size: 20px;', + 'font-weight: bold;', + 'padding: 15px 0 5px 0;', + 'margin: 0;', + '}', + '.less-error-message a {', + 'color: #10a', + '}', + '.less-error-message .error {', + 'color: red;', + 'font-weight: bold;', + 'padding-bottom: 2px;', + 'border-bottom: 1px dashed red;', + '}' + ].join('\n'), { title: 'error-message' }); + + elem.style.cssText = [ + "font-family: Arial, sans-serif", + "border: 1px solid #e00", + "background-color: #eee", + "border-radius: 5px", + "-webkit-border-radius: 5px", + "-moz-border-radius: 5px", + "color: #e00", + "padding: 15px", + "margin-bottom: 15px" + ].join(';'); + + if (less.env == 'development') { + timer = setInterval(function () { + if (document.body) { + if (document.getElementById(id)) { + document.body.replaceChild(elem, document.getElementById(id)); + } else { + document.body.insertBefore(elem, document.body.firstChild); + } + clearInterval(timer); + } + }, 10); + } +} + +function error(e, rootHref) { + if (!less.errorReporting || less.errorReporting === "html") { + errorHTML(e, rootHref); + } else if (less.errorReporting === "console") { + errorConsole(e, rootHref); + } else if (typeof less.errorReporting === 'function') { + less.errorReporting("add", e, rootHref); + } +} + +function removeErrorHTML(path) { + var node = document.getElementById('less-error-message:' + extractId(path)); + if (node) { + node.parentNode.removeChild(node); + } +} + +function removeErrorConsole(path) { + //no action +} + +function removeError(path) { + if (!less.errorReporting || less.errorReporting === "html") { + removeErrorHTML(path); + } else if (less.errorReporting === "console") { + removeErrorConsole(path); + } else if (typeof less.errorReporting === 'function') { + less.errorReporting("remove", path); + } +} + +function loadStyles(newVars) { + var styles = document.getElementsByTagName('style'), + style; + for (var i = 0; i < styles.length; i++) { + style = styles[i]; + if (style.type.match(typePattern)) { + var env = new less.tree.parseEnv(less), + lessText = style.innerHTML || ''; + env.filename = document.location.href.replace(/#.*$/, ''); + if (newVars) { + env.useFileCache = true; + lessText += "\n" + newVars; + } + + /*jshint loopfunc:true */ + // use closure to store current value of i + var callback = (function(style) { + return function (e, cssAST) { + if (e) { + return error(e, "inline"); + } + var css = cssAST.toCSS(less); + style.type = 'text/css'; + if (style.styleSheet) { + style.styleSheet.cssText = css; + } else { + style.innerHTML = css; + } + }; + })(style); + new(less.Parser)(env).parse(lessText, callback); + } + } +} + +function extractUrlParts(url, baseUrl) { + // urlParts[1] = protocol&hostname || / + // urlParts[2] = / if path relative to host base + // urlParts[3] = directories + // urlParts[4] = filename + // urlParts[5] = parameters + + var urlPartsRegex = /^((?:[a-z-]+:)?\/+?(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i, + urlParts = url.match(urlPartsRegex), + returner = {}, directories = [], i, baseUrlParts; + + if (!urlParts) { + throw new Error("Could not parse sheet href - '"+url+"'"); + } + + // Stylesheets in IE don't always return the full path + if (!urlParts[1] || urlParts[2]) { + baseUrlParts = baseUrl.match(urlPartsRegex); + if (!baseUrlParts) { + throw new Error("Could not parse page url - '"+baseUrl+"'"); + } + urlParts[1] = urlParts[1] || baseUrlParts[1] || ""; + if (!urlParts[2]) { + urlParts[3] = baseUrlParts[3] + urlParts[3]; + } + } + + if (urlParts[3]) { + directories = urlParts[3].replace(/\\/g, "/").split("/"); + + // extract out . before .. so .. doesn't absorb a non-directory + for(i = 0; i < directories.length; i++) { + if (directories[i] === ".") { + directories.splice(i, 1); + i -= 1; + } + } + + for(i = 0; i < directories.length; i++) { + if (directories[i] === ".." && i > 0) { + directories.splice(i-1, 2); + i -= 2; + } + } + } + + returner.hostPart = urlParts[1]; + returner.directories = directories; + returner.path = urlParts[1] + directories.join("/"); + returner.fileUrl = returner.path + (urlParts[4] || ""); + returner.url = returner.fileUrl + (urlParts[5] || ""); + return returner; +} + +function pathDiff(url, baseUrl) { + // diff between two paths to create a relative path + + var urlParts = extractUrlParts(url), + baseUrlParts = extractUrlParts(baseUrl), + i, max, urlDirectories, baseUrlDirectories, diff = ""; + if (urlParts.hostPart !== baseUrlParts.hostPart) { + return ""; + } + max = Math.max(baseUrlParts.directories.length, urlParts.directories.length); + for(i = 0; i < max; i++) { + if (baseUrlParts.directories[i] !== urlParts.directories[i]) { break; } + } + baseUrlDirectories = baseUrlParts.directories.slice(i); + urlDirectories = urlParts.directories.slice(i); + for(i = 0; i < baseUrlDirectories.length-1; i++) { + diff += "../"; + } + for(i = 0; i < urlDirectories.length-1; i++) { + diff += urlDirectories[i] + "/"; + } + return diff; +} + +function getXMLHttpRequest() { + if (window.XMLHttpRequest) { + return new XMLHttpRequest(); + } else { + try { + /*global ActiveXObject */ + return new ActiveXObject("MSXML2.XMLHTTP.3.0"); + } catch (e) { + log("browser doesn't support AJAX.", logLevel.errors); + return null; + } + } +} + +function doXHR(url, type, callback, errback) { + var xhr = getXMLHttpRequest(); + var async = isFileProtocol ? less.fileAsync : less.async; + + if (typeof(xhr.overrideMimeType) === 'function') { + xhr.overrideMimeType('text/css'); + } + log("XHR: Getting '" + url + "'", logLevel.info); + xhr.open('GET', url, async); + xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5'); + xhr.send(null); + + function handleResponse(xhr, callback, errback) { + if (xhr.status >= 200 && xhr.status < 300) { + callback(xhr.responseText, + xhr.getResponseHeader("Last-Modified")); + } else if (typeof(errback) === 'function') { + errback(xhr.status, url); + } + } + + if (isFileProtocol && !less.fileAsync) { + if (xhr.status === 0 || (xhr.status >= 200 && xhr.status < 300)) { + callback(xhr.responseText); + } else { + errback(xhr.status, url); + } + } else if (async) { + xhr.onreadystatechange = function () { + if (xhr.readyState == 4) { + handleResponse(xhr, callback, errback); + } + }; + } else { + handleResponse(xhr, callback, errback); + } +} + +function loadFile(originalHref, currentFileInfo, callback, env, newVars) { + + if (currentFileInfo && currentFileInfo.currentDirectory && !/^([a-z-]+:)?\//.test(originalHref)) { + originalHref = currentFileInfo.currentDirectory + originalHref; + } + + // sheet may be set to the stylesheet for the initial load or a collection of properties including + // some env variables for imports + var hrefParts = extractUrlParts(originalHref, window.location.href); + var href = hrefParts.url; + var newFileInfo = { + currentDirectory: hrefParts.path, + filename: href + }; + + if (currentFileInfo) { + newFileInfo.entryPath = currentFileInfo.entryPath; + newFileInfo.rootpath = currentFileInfo.rootpath; + newFileInfo.rootFilename = currentFileInfo.rootFilename; + newFileInfo.relativeUrls = currentFileInfo.relativeUrls; + } else { + newFileInfo.entryPath = hrefParts.path; + newFileInfo.rootpath = less.rootpath || hrefParts.path; + newFileInfo.rootFilename = href; + newFileInfo.relativeUrls = env.relativeUrls; + } + + if (newFileInfo.relativeUrls) { + if (env.rootpath) { + newFileInfo.rootpath = extractUrlParts(env.rootpath + pathDiff(hrefParts.path, newFileInfo.entryPath)).path; + } else { + newFileInfo.rootpath = hrefParts.path; + } + } + + if (env.useFileCache && fileCache[href]) { + try { + var lessText = fileCache[href]; + if (newVars) { + lessText += "\n" + newVars; + } + callback(null, lessText, href, newFileInfo, { lastModified: new Date() }); + } catch (e) { + callback(e, null, href); + } + return; + } + + doXHR(href, env.mime, function (data, lastModified) { + // per file cache + fileCache[href] = data; + + // Use remote copy (re-parse) + try { + callback(null, data, href, newFileInfo, { lastModified: lastModified }); + } catch (e) { + callback(e, null, href); + } + }, function (status, url) { + callback({ type: 'File', message: "'" + url + "' wasn't found (" + status + ")" }, null, href); + }); +} + +function loadStyleSheet(sheet, callback, reload, remaining, newVars) { + + var env = new less.tree.parseEnv(less); + env.mime = sheet.type; + + if (newVars) { + env.useFileCache = true; + } + + loadFile(sheet.href, null, function(e, data, path, newFileInfo, webInfo) { + + if (webInfo) { + webInfo.remaining = remaining; + + var css = cache && cache.getItem(path), + timestamp = cache && cache.getItem(path + ':timestamp'); + + if (!reload && timestamp && webInfo.lastModified && + (new(Date)(webInfo.lastModified).valueOf() === + new(Date)(timestamp).valueOf())) { + // Use local copy + createCSS(css, sheet); + webInfo.local = true; + callback(null, null, data, sheet, webInfo, path); + return; + } + } + + //TODO add tests around how this behaves when reloading + removeError(path); + + if (data) { + env.currentFileInfo = newFileInfo; + new(less.Parser)(env).parse(data, function (e, root) { + if (e) { return callback(e, null, null, sheet); } + try { + callback(e, root, data, sheet, webInfo, path); + } catch (e) { + callback(e, null, null, sheet); + } + }); + } else { + callback(e, null, null, sheet, webInfo, path); + } + }, env, newVars); +} + +function loadStyleSheets(callback, reload, newVars) { + for (var i = 0; i < less.sheets.length; i++) { + loadStyleSheet(less.sheets[i], callback, reload, less.sheets.length - (i + 1), newVars); + } +} + +function initRunningMode(){ + if (less.env === 'development') { + less.optimization = 0; + less.watchTimer = setInterval(function () { + if (less.watchMode) { + loadStyleSheets(function (e, root, _, sheet, env) { + if (e) { + error(e, sheet.href); + } else if (root) { + createCSS(root.toCSS(less), sheet, env.lastModified); + } + }); + } + }, less.poll); + } else { + less.optimization = 3; + } +} + +// +// Watch mode +// +less.watch = function () { + if (!less.watchMode ){ + less.env = 'development'; + initRunningMode(); + } + return this.watchMode = true; +}; + +less.unwatch = function () {clearInterval(less.watchTimer); return this.watchMode = false; }; + +if (/!watch/.test(location.hash)) { + less.watch(); +} + +if (less.env != 'development') { + try { + cache = (typeof(window.localStorage) === 'undefined') ? null : window.localStorage; + } catch (_) {} +} + +// +// Get all tags with the 'rel' attribute set to "stylesheet/less" +// +var links = document.getElementsByTagName('link'); + +less.sheets = []; + +for (var i = 0; i < links.length; i++) { + if (links[i].rel === 'stylesheet/less' || (links[i].rel.match(/stylesheet/) && + (links[i].type.match(typePattern)))) { + less.sheets.push(links[i]); + } +} + +// +// With this function, it's possible to alter variables and re-render +// CSS without reloading less-files +// +less.modifyVars = function(record) { + var newVars = ""; + for (var name in record) { + newVars += ((name.slice(0,1) === '@')? '' : '@') + name +': '+ + ((record[name].slice(-1) === ';')? record[name] : record[name] +';'); + } + less.refresh(false, newVars); +}; + +less.refresh = function (reload, newVars) { + var startTime, endTime; + startTime = endTime = new Date(); + + loadStyleSheets(function (e, root, _, sheet, env) { + if (e) { + return error(e, sheet.href); + } + if (env.local) { + log("loading " + sheet.href + " from cache.", logLevel.info); + } else { + log("parsed " + sheet.href + " successfully.", logLevel.info); + createCSS(root.toCSS(less), sheet, env.lastModified); + } + log("css for " + sheet.href + " generated in " + (new Date() - endTime) + 'ms', logLevel.info); + if (env.remaining === 0) { + log("css generated in " + (new Date() - startTime) + 'ms', logLevel.info); + } + endTime = new Date(); + }, reload, newVars); + + loadStyles(newVars); +}; + +less.refreshStyles = loadStyles; + +less.Parser.fileLoader = loadFile; + +less.refresh(less.env === 'development'); + +// amd.js +// +// Define Less as an AMD module. +if (typeof define === "function" && define.amd) { + define(function () { return less; } ); +} + +})(window); \ No newline at end of file diff --git a/dist/less-1.5.0.min.js b/dist/less-1.5.0.min.js new file mode 100644 index 00000000..ef4be902 --- /dev/null +++ b/dist/less-1.5.0.min.js @@ -0,0 +1,13 @@ +/*! + * LESS - Leaner CSS v1.5.0 + * http://lesscss.org + * + * Copyright (c) 2009-2013, Alexis Sellier + * Licensed under the Apache v2 License. + * + * @licence + */ + +function require(a){return window.less[a.split("/")[1]]}function log(a,b){"development"==less.env&&"undefined"!=typeof console&&less.logLevel>=b&&console.log("less: "+a)}function extractId(a){return a.replace(/^[a-z-]+:\/+?[^\/]+/,"").replace(/^\//,"").replace(/\.[a-zA-Z]+$/,"").replace(/[^\.\w-]+/g,"-").replace(/\./g,":")}function errorConsole(a,b){var c="{line} {content}",d=a.filename||b,e=[],f=(a.type||"Syntax")+"Error: "+(a.message||"There is an error in your .less file")+" in "+d+" ",g=function(a,b,d){void 0!==a.extract[b]&&e.push(c.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,d).replace(/\{content\}/,a.extract[b]))};a.extract?(g(a,0,""),g(a,1,"line"),g(a,2,""),f+="on line "+a.line+", column "+(a.column+1)+":\n"+e.join("\n")):a.stack&&(f+=a.stack),log(f,logLevel.errors)}function createCSS(a,b,c){var d=b.href||"",e="less:"+(b.title||extractId(d)),f=document.getElementById(e),g=!1,h=document.createElement("style");if(h.setAttribute("type","text/css"),b.media&&h.setAttribute("media",b.media),h.id=e,h.styleSheet)try{h.styleSheet.cssText=a}catch(i){throw new Error("Couldn't reassign styleSheet.cssText.")}else h.appendChild(document.createTextNode(a)),g=null!==f&&f.childNodes.length>0&&h.childNodes.length>0&&f.firstChild.nodeValue===h.firstChild.nodeValue;var j=document.getElementsByTagName("head")[0];if(null===f||g===!1){var k=b&&b.nextSibling||null;k?k.parentNode.insertBefore(h,k):j.appendChild(h)}if(f&&g===!1&&f.parentNode.removeChild(f),c&&cache){log("saving "+d+" to cache.",logLevel.info);try{cache.setItem(d,a),cache.setItem(d+":timestamp",c)}catch(i){log("failed to save",logLevel.errors)}}}function errorHTML(a,b){var c,d,e="less-error-message:"+extractId(b||""),f='
  • {content}
    • ',g=document.createElement("div"),h=[],i=a.filename||b,j=i.match(/([^\/]+(\?.*)?)$/)[1];g.id=e,g.className="less-error-message",d="

    "+(a.type||"Syntax")+"Error: "+(a.message||"There is an error in your .less file")+"

    "+'

    in '+j+" ";var k=function(a,b,c){void 0!==a.extract[b]&&h.push(f.replace(/\{line\}/,(parseInt(a.line,10)||0)+(b-1)).replace(/\{class\}/,c).replace(/\{content\}/,a.extract[b]))};a.extract?(k(a,0,""),k(a,1,"line"),k(a,2,""),d+="on line "+a.line+", column "+(a.column+1)+":

    "+"
      "+h.join("")+"
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e=d.value/100,f=2*e-1,g=b.toHSL().a-c.toHSL().a,h=((-1==f*g?f:(f+g)/(1+f*g))+1)/2,i=1-h,j=[b.rgb[0]*h+c.rgb[0]*i,b.rgb[1]*h+c.rgb[1]*i,b.rgb[2]*h+c.rgb[2]*i],k=b.alpha*e+c.alpha*(1-e);return new a.Color(j,k)},greyscale:function(b){return this.desaturate(b,new a.Dimension(100))},contrast:function(a,b,c,e){if(!a.rgb)return null;if("undefined"==typeof c&&(c=this.rgba(255,255,255,1)),"undefined"==typeof b&&(b=this.rgba(0,0,0,1)),b.luma()>c.luma()){var f=c;c=b,b=f}return e="undefined"==typeof e?.43:d(e),a.luma()*a.alphah.value)&&(j[e]=f)):(k[i]=j.length,j.push(f))):j.push(f);return 1==j.length?j[0]:(c=j.map(function(a){return a.toCSS(this.env)}).join(this.env.compress?",":", "),new a.Anonymous((b?"min":"max")+"("+c+")"))},min:function(){return this._minmax(!0,arguments)},max:function(){return this._minmax(!1,arguments)},argb:function(b){return new a.Anonymous(b.toARGB())},percentage:function(b){return new a.Dimension(100*b.value,"%")},color:function(b){if(b instanceof a.Quoted){var c,d=b.value;if(c=a.Color.fromKeyword(d))return c;if(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/.test(d))return new a.Color(d.slice(1));throw{type:"Argument",message:"argument must be a color keyword or 3/6 digit hex e.g. #FFF"}}throw{type:"Argument",message:"argument must be a string"}},iscolor:function(b){return this._isa(b,a.Color)},isnumber:function(b){return this._isa(b,a.Dimension)},isstring:function(b){return this._isa(b,a.Quoted)},iskeyword:function(b){return this._isa(b,a.Keyword)},isurl:function(b){return this._isa(b,a.URL) +},ispixel:function(a){return this.isunit(a,"px")},ispercentage:function(a){return this.isunit(a,"%")},isem:function(a){return this.isunit(a,"em")},isunit:function(b,c){return b instanceof a.Dimension&&b.unit.is(c.value||c)?a.True:a.False},_isa:function(b,c){return b instanceof c?a.True:a.False},multiply:function(a,b){var c=a.rgb[0]*b.rgb[0]/255,d=a.rgb[1]*b.rgb[1]/255,e=a.rgb[2]*b.rgb[2]/255;return this.rgb(c,d,e)},screen:function(a,b){var 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