From 1748a8543f8b97feabb978752337c7efd093250b Mon Sep 17 00:00:00 2001 From: James marshall-Gunn Date: Sat, 28 Apr 2012 19:01:18 +0100 Subject: [PATCH 1/5] tests and partial implementation of variable variables. --- lib/less/parser.js | 4 ++-- lib/less/tree/rule.js | 13 +++++++++++++ test/css/variables.css | 4 ++++ test/less-test.js | 7 ++++++- test/less/variables.less | 13 +++++++++++++ 5 files changed, 38 insertions(+), 3 deletions(-) diff --git a/lib/less/parser.js b/lib/less/parser.js index 26bc4978a..3ff99bc15 100644 --- a/lib/less/parser.js +++ b/lib/less/parser.js @@ -1,4 +1,4 @@ -var less, tree; +var less, tree; if (typeof environment === "object" && ({}).toString.call(environment) === "[object Environment]") { // Rhino @@ -716,7 +716,7 @@ less.Parser = function Parser(env) { variable: function () { var name; - if (input.charAt(i) === '@' && (name = $(/^(@[\w-]+)\s*:/))) { return name[1] } + if (input.charAt(i) === '@' && (name = $(/^(@@*[\w-]+)\s*:/))) { return name[1] } }, // diff --git a/lib/less/tree/rule.js b/lib/less/tree/rule.js index 9e4e54a3a..244ee4fcf 100644 --- a/lib/less/tree/rule.js +++ b/lib/less/tree/rule.js @@ -11,6 +11,7 @@ tree.Rule = function (name, value, important, index, inline) { this.variable = true; } else { this.variable = false } }; + tree.Rule.prototype.toCSS = function (env) { if (this.variable) { return "" } else { @@ -21,6 +22,18 @@ tree.Rule.prototype.toCSS = function (env) { }; tree.Rule.prototype.eval = function (context) { + if(this.name.charAt(1) === '@') { + var variable = context.frames[0]._variables[this.name]; + var refVar = context.frames[0]._variables[this.name.substr(1)]; +console.log(refVar); + var resolvedName = '@' + refVar.value.value[0].value[0].value; + var newVariable = context.frames[0]._variables[this.name]; + context.frames[0]._variables[resolvedName] = newVariable; + delete context.frames[0]._variables[this.name]; + context.frames[0]._variables[resolvedName].name = resolvedName; + + this.name = resolvedName; + } return new(tree.Rule)(this.name, this.value.eval(context), this.important, diff --git a/test/css/variables.css b/test/css/variables.css index 961fe6959..9d330b74f 100644 --- a/test/css/variables.css +++ b/test/css/variables.css @@ -7,6 +7,10 @@ font-family: "Trebuchet MS", Verdana, sans-serif; quotes: "~" "~"; } +.variable-variables{ + width: 1; + url: url('var'); +} .redefinition { three: 3; } diff --git a/test/less-test.js b/test/less-test.js index 46412e011..b935d6b8d 100644 --- a/test/less-test.js +++ b/test/less-test.js @@ -28,7 +28,12 @@ fs.readdirSync('test/less').forEach(function (file) { else if (err) { sys.print(stylize("ERROR: " + (err && err.message), 'red')); } else { - sys.print(stylize("FAIL", 'yellow')); + if(name == 'variables'){ + sys.print(stylize("\n" + css, 'yellow')); + sys.print(stylize("\n" + less, 'green')); + }else{ + sys.print(stylize("FAIL", 'yellow')); + } } sys.puts(""); }); diff --git a/test/less/variables.less b/test/less/variables.less index 66ab4efff..8077932fc 100644 --- a/test/less/variables.less +++ b/test/less/variables.less @@ -23,6 +23,19 @@ quotes: @q; } +@vv1: var; +@vv2: vv1; +@vv3: vv2; +@@@vv3: var; + +@vn: 1; +@vnv: vn; + +.variable-variable{ + width: @@vnv; + url: url('@{var}'); +} + .redefinition { @var: 4; @var: 2; From 519f82147126d29a4cfd59b3419f7417d5b54612 Mon Sep 17 00:00:00 2001 From: James marshall-Gunn Date: Sat, 28 Apr 2012 20:24:54 +0100 Subject: [PATCH 2/5] full support for variable-variable declarations of any size deepth. --- lib/less/tree/rule.js | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/lib/less/tree/rule.js b/lib/less/tree/rule.js index 244ee4fcf..97b14e747 100644 --- a/lib/less/tree/rule.js +++ b/lib/less/tree/rule.js @@ -23,15 +23,19 @@ tree.Rule.prototype.toCSS = function (env) { tree.Rule.prototype.eval = function (context) { if(this.name.charAt(1) === '@') { - var variable = context.frames[0]._variables[this.name]; - var refVar = context.frames[0]._variables[this.name.substr(1)]; -console.log(refVar); - var resolvedName = '@' + refVar.value.value[0].value[0].value; + var refCount = this.name.match(/^@+/)[0].length; + var resolvedName = this.name.substr(refCount-1); + for(; refCount; --refCount){ + var refVar = context.frames[0]._variables[resolvedName]; + if(refVar){ + resolvedName = '@' + refVar.value.value[0].value[0].value; + console.log(resolvedName); + } + } var newVariable = context.frames[0]._variables[this.name]; context.frames[0]._variables[resolvedName] = newVariable; delete context.frames[0]._variables[this.name]; context.frames[0]._variables[resolvedName].name = resolvedName; - this.name = resolvedName; } return new(tree.Rule)(this.name, From 6b4a1366f3a92a46559d114f33dae802165fba34 Mon Sep 17 00:00:00 2001 From: James marshall-Gunn Date: Sat, 28 Apr 2012 20:26:17 +0100 Subject: [PATCH 3/5] removed debugging prints from less-test.js --- test/less-test.js | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/test/less-test.js b/test/less-test.js index b935d6b8d..46412e011 100644 --- a/test/less-test.js +++ b/test/less-test.js @@ -28,12 +28,7 @@ fs.readdirSync('test/less').forEach(function (file) { else if (err) { sys.print(stylize("ERROR: " + (err && err.message), 'red')); } else { - if(name == 'variables'){ - sys.print(stylize("\n" + css, 'yellow')); - sys.print(stylize("\n" + less, 'green')); - }else{ - sys.print(stylize("FAIL", 'yellow')); - } + sys.print(stylize("FAIL", 'yellow')); } sys.puts(""); }); From f2013f4684fc522c4ec414baf686259a833c9862 Mon Sep 17 00:00:00 2001 From: James marshall-Gunn Date: Sun, 29 Apr 2012 20:08:17 +0100 Subject: [PATCH 4/5] refactored the logic in variable variable resolution within rule.js to function correctly in the browser --- dist/less-.js | 3518 +++++++++++++++++++++++++++++++++++++++++ lib/less/tree/rule.js | 19 +- 2 files changed, 3530 insertions(+), 7 deletions(-) create mode 100644 dist/less-.js diff --git a/dist/less-.js b/dist/less-.js new file mode 100644 index 000000000..cfbfbd46d --- /dev/null +++ b/dist/less-.js @@ -0,0 +1,3518 @@ +// +// LESS - Leaner CSS v +// http://lesscss.org +// +// Copyright (c) 2009-2011, Alexis Sellier +// Licensed under the Apache 2.0 License. +// +(function (window, undefined) { +// +// Stub out `require` in the browser +// +function require(arg) { + return window.less[arg.split('/')[1]]; +}; + +// amd.js +// +// Define Less as an AMD module. +if (typeof define === "function" && define.amd) { + define("less", [], function () { return less; } ); +} + +// ecma-5.js +// +// -- kriskowal Kris Kowal Copyright (C) 2009-2010 MIT License +// -- tlrobinson Tom Robinson +// dantman Daniel Friesen + +// +// Array +// +if (!Array.isArray) { + Array.isArray = function(obj) { + return Object.prototype.toString.call(obj) === "[object Array]" || + (obj instanceof Array); + }; +} +if (!Array.prototype.forEach) { + Array.prototype.forEach = function(block, thisObject) { + var len = this.length >>> 0; + for (var i = 0; i < len; i++) { + if (i in this) { + block.call(thisObject, this[i], i, this); + } + } + }; +} +if (!Array.prototype.map) { + Array.prototype.map = function(fun /*, thisp*/) { + var len = this.length >>> 0; + var res = new Array(len); + var thisp = arguments[1]; + + for (var i = 0; i < len; i++) { + if (i in this) { + res[i] = fun.call(thisp, this[i], i, this); + } + } + return res; + }; +} +if (!Array.prototype.filter) { + Array.prototype.filter = function (block /*, thisp */) { + var values = []; + var thisp = arguments[1]; + for (var i = 0; i < this.length; i++) { + if (block.call(thisp, this[i])) { + values.push(this[i]); + } + } + return values; + }; +} +if (!Array.prototype.reduce) { + Array.prototype.reduce = function(fun /*, initial*/) { + var len = this.length >>> 0; + var i = 0; + + // no value to return if no initial value and an empty array + if (len === 0 && arguments.length === 1) throw new TypeError(); + + if (arguments.length >= 2) { + var rv = arguments[1]; + } else { + do { + if (i in this) { + rv = this[i++]; + break; + } + // if array contains no values, no initial value to return + if (++i >= len) throw new TypeError(); + } while (true); + } + for (; i < len; i++) { + if (i in this) { + rv = fun.call(null, rv, this[i], i, this); + } + } + return rv; + }; +} +if (!Array.prototype.indexOf) { + Array.prototype.indexOf = function (value /*, fromIndex */ ) { + var length = this.length; + var i = arguments[1] || 0; + + if (!length) return -1; + if (i >= length) return -1; + if (i < 0) i += length; + + for (; i < length; i++) { + if (!Object.prototype.hasOwnProperty.call(this, i)) { continue } + if (value === this[i]) return i; + } + return -1; + }; +} + +// +// Object +// +if (!Object.keys) { + Object.keys = function (object) { + var keys = []; + for (var name in object) { + if (Object.prototype.hasOwnProperty.call(object, name)) { + keys.push(name); + } + } + return keys; + }; +} + +// +// String +// +if (!String.prototype.trim) { + String.prototype.trim = function () { + return String(this).replace(/^\s\s*/, '').replace(/\s\s*$/, ''); + }; +} +var less, tree; + +if (typeof environment === "object" && ({}).toString.call(environment) === "[object Environment]") { + // Rhino + // Details on how to detect Rhino: https://github.com/ringo/ringojs/issues/88 + if (typeof(window) === 'undefined') { less = {} } + else { less = window.less = {} } + tree = less.tree = {}; + less.mode = 'rhino'; +} else if (typeof(window) === 'undefined') { + // Node.js + less = exports, + tree = require('./tree'); + less.mode = 'node'; +} else { + // Browser + if (typeof(window.less) === 'undefined') { window.less = {} } + less = window.less, + tree = window.less.tree = {}; + less.mode = 'browser'; +} +// +// 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; + + var that = this; + + // This function is called after all files + // have been imported through `@import`. + var finish = function () {}; + + var imports = this.imports = { + paths: env && env.paths || [], // Search paths, when importing + queue: [], // Files which haven't been imported yet + files: {}, // Holds the imported parse trees + contents: {}, // Holds the imported file contents + mime: env && env.mime, // MIME type of .less files + error: null, // Error in parsing/evaluating an import + push: function (path, callback) { + var that = this; + this.queue.push(path); + + // + // Import a file asynchronously + // + less.Parser.importer(path, this.paths, function (e, root, contents) { + that.queue.splice(that.queue.indexOf(path), 1); // Remove the path from the queue + + var imported = path in that.files; + + that.files[path] = root; // Store the root + that.contents[path] = contents; + + if (e && !that.error) { that.error = e } + + callback(e, root, imported); + + if (that.queue.length === 0) { finish() } // Call `finish` if we're done importing + }, 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; + } + } + // + // Parse from a token, regexp or string, and move forward if match + // + function $(tok) { + var match, args, length, c, index, endIndex, k, mem; + + // + // 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) { + mem = i += length; + endIndex = i + chunks[j].length - length; + + while (i < endIndex) { + c = input.charCodeAt(i); + if (! (c === 32 || c === 10 || c === 9)) { break } + i++; + } + chunks[j] = chunks[j].slice(length + (i - mem)); + current = i; + + if (chunks[j].length === 0 && j < chunks.length - 1) { j++ } + + if(typeof(match) === 'string') { + return match; + } else { + return match.length === 1 ? match[0] : match; + } + } + } + + 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) { + throw { index: i, type: type || 'Syntax', message: msg }; + } + + // Same as $(), but don't change the state of the parser, + // just return the match. + function peek(tok) { + if (typeof(tok) === 'string') { + return input.charAt(i) === tok; + } else { + if (tok.test(chunks[j])) { + return true; + } else { + return false; + } + } + } + + function basename(pathname) { + if (less.mode === 'node') { + return require('path').basename(pathname); + } else { + return pathname.match(/[^\/]+$/)[0]; + } + } + + function getInput(e, env) { + if (e.filename && env.filename && (e.filename !== env.filename)) { + return parser.imports.contents[basename(e.filename)]; + } else { + return input; + } + } + + function getLocation(index, input) { + for (var n = index, column = -1; + n >= 0 && input.charAt(n) !== '\n'; + n--) { column++ } + + return { line: typeof(index) === 'number' ? (input.slice(0, index).match(/\n/g) || "").length : null, + column: column }; + } + + function LessError(e, env) { + var input = getInput(e, env), + loc = getLocation(e.index, input), + line = loc.line, + col = loc.column, + lines = input.split('\n'); + + this.type = e.type || 'Syntax'; + this.message = e.message; + this.filename = e.filename || env.filename; + this.index = e.index; + this.line = typeof(line) === 'number' ? line + 1 : null; + this.callLine = e.call && (getLocation(e.call, input).line + 1); + this.callExtract = lines[getLocation(e.call, input).line]; + this.stack = e.stack; + this.column = col; + this.extract = [ + lines[line - 1], + lines[line], + lines[line + 1] + ]; + } + + 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; + + this.env.filename = this.env.filename || null; + + // + // 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, start, end, zone, line, lines, buff = [], c, error = null; + + i = j = current = furthest = 0; + input = str.replace(/\r\n/g, '\n'); + + // Split the input into chunks. + chunks = (function (chunks) { + var j = 0, + skip = /[^"'`\{\}\/\(\)\\]+/g, + comment = /\/\*(?:[^*]|\*+[^\/*])*\*+\/|\/\/.*/g, + string = /"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'|`((?:[^`\\\r\n]|\\.)*)`/g, + level = 0, + match, + chunk = chunks[0], + inParam; + + for (var i = 0, c, cc; i < input.length; i++) { + 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]); + c = input.charAt(i); + } + } + + 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]); + c = input.charAt(i); + } + } + } + } + + switch (c) { + case '{': if (! inParam) { level ++; chunk.push(c); break } + case '}': if (! inParam) { level --; chunk.push(c); chunks[++j] = chunk = []; break } + case '(': if (! inParam) { inParam = true; chunk.push(c); break } + case ')': if ( inParam) { inParam = false; chunk.push(c); break } + default: chunk.push(c); + } + } + if (level > 0) { + error = new(LessError)({ + index: i, + type: 'Parse', + message: "missing closing `}`", + filename: env.filename + }, env); + } + + return chunks.map(function (c) { return c.join('') });; + })([[]]); + + if (error) { + return callback(error); + } + + // 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; + } catch (e) { + return callback(new(LessError)(e, env)); + } + + root.toCSS = (function (evaluate) { + var line, lines, column; + + return function (options, variables) { + var frames = [], importError; + + options = 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, 0); + }); + frames = [new(tree.Ruleset)(null, variables)]; + } + + try { + var css = evaluate.call(this, { frames: frames }) + .toCSS([], { compress: options.compress || false }); + } catch (e) { + throw new(LessError)(e, env); + } + + if ((importError = parser.imports.error)) { // Check if there was an error during importing + if (importError instanceof LessError) throw importError; + else throw new(LessError)(importError, env); + } + + if (options.yuicompress && less.mode === 'node') { + return require('./cssmin').compressor.cssmin(css); + } else if (options.compress) { + return css.replace(/(\s)+/g, "$1"); + } else { + return css; + } + }; + })(root.eval); + + // If `i` is smaller than the `input.length - 1`, + // it means the parser wasn't able to parse the whole + // string, so we've got a parsing error. + // + // We try to extract a \n delimited string, + // showing the line where the parse error occured. + // We split it up into two parts (the part which parsed, + // and the part which didn't), so we can color them differently. + if (i < input.length - 1) { + i = furthest; + lines = input.split('\n'); + line = (input.slice(0, i).match(/\n/g) || "").length + 1; + + for (var n = i, column = -1; n >= 0 && input.charAt(n) !== '\n'; n--) { column++ } + + error = { + type: "Parse", + message: "Syntax Error on line " + line, + index: i, + filename: env.filename, + line: line, + column: column, + extract: [ + lines[line - 2], + lines[line - 1], + lines[line] + ] + }; + } + + if (this.imports.queue.length > 0) { + finish = function () { callback(error, root) }; + } else { + callback(error, root); + } + }, + + // + // Here in, the parsing rules/functions + // + // The basic structure of the syntax tree generated is as follows: + // + // Ruleset -> Rule -> Value -> Expression -> Entity + // + // Here's some LESS code: + // + // .class { + // color: #fff; + // border: 1px solid #000; + // width: @w + 4px; + // > .child {...} + // } + // + // And here's what the parse tree might look like: + // + // Ruleset (Selector '.class', [ + // Rule ("color", Value ([Expression [Color #fff]])) + // Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]])) + // Rule ("width", Value ([Expression [Operation "+" [Variable "@w"][Dimension 4px]]])) + // Ruleset (Selector [Element '>', '.child'], [...]) + // ]) + // + // In general, most rules will try to parse a token with the `$()` 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.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); + } else if (comment = $(/^\/\*(?:[^*]|\*+[^\/*])*\*+\/\n?/)) { + return new(tree.Comment)(comment); + } + }, + + // + // 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; + + 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); + } + }, + + // + // A catch-all word, such as: + // + // black border-collapse + // + keyword: function () { + var k; + + if (k = $(/^[_A-Za-z-][_A-Za-z0-9-]*/)) { + if (tree.colors.hasOwnProperty(k)) { + // detect named color + return new(tree.Color)(tree.colors[k].slice(1)); + } else { + 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, args, index = i; + + if (! (name = /^([\w-]+|%|progid:[\w\.]+)\(/.exec(chunks[j]))) return; + + name = name[1].toLowerCase(); + + if (name === 'url') { return null } + else { i += name.length } + + if (name === 'alpha') { return $(this.alpha) } + + $('('); // Parse the '(' and consume whitespace. + + args = $(this.entities.arguments); + + if (! $(')')) return; + + if (name) { return new(tree.Call)(name, args, index, env.filename) } + }, + 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); + }, + + // 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) || + $(this.entities.dataURI) || $(/^[-\w%@$\/.&=:;#+?~]+/) || ""; + + expect(')'); + + return new(tree.URL)((value.value || value.data || value instanceof tree.Variable) + ? value : new(tree.Anonymous)(value), imports.paths); + }, + + dataURI: function () { + var obj; + + if ($(/^data:/)) { + obj = {}; + obj.mime = $(/^[^\/]+\/[^,;)]+/) || ''; + obj.charset = $(/^;\s*charset=[^,;)]+/) || ''; + obj.base64 = $(/^;\s*base64/) || ''; + obj.data = $(/^,\s*[^)]+/); + + if (obj.data) { return obj } + } + }, + + // + // 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.filename); + } + }, + + // + // 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); + if ((c > 57 || c < 45) || c === 47) return; + + if (value = $(/^(-?\d*\.?\d+)(px|%|em|rem|pc|ex|in|deg|s|ms|pt|cm|mm|rad|grad|turn)?/)) { + return new(tree.Dimension)(value[1], value[2]); + } + }, + + // + // 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 } + + 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] } + }, + + // + // A font size/line-height shorthand + // + // small/12px + // + // We need to peek first, or we'll match on keywords and dimensions + // + shorthand: function () { + var a, b; + + if (! peek(/^[@\w.%-]+\/[@\w.-]+/)) return; + + if ((a = $(this.entity)) && $('/') && (b = $(this.entity))) { + return new(tree.Shorthand)(a, b); + } + }, + + // + // 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 } + + while (e = $(/^[#.](?:[\w-]|\\(?:[a-fA-F0-9]{1,6} ?|[^a-fA-F0-9]))+/)) { + elements.push(new(tree.Element)(c, e, i)); + c = $('>'); + } + $('(') && (args = $(this.entities.arguments)) && $(')'); + + if ($(this.important)) { + important = true; + } + + if (elements.length > 0 && ($(';') || peek('}'))) { + return new(tree.mixin.Call)(elements, args || [], index, env.filename, important); + } + }, + + // + // 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, param, value, 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]; + + do { + if (input.charAt(i) === '.' && $(/^\.{3}/)) { + variadic = true; + break; + } else if (param = $(this.entities.variable) || $(this.entities.literal) + || $(this.entities.keyword)) { + // Variable + if (param instanceof tree.Variable) { + if ($(':')) { + value = expect(this.expression, 'expected expression'); + params.push({ name: param.name, value: value }); + } else if ($(/^\.{3}/)) { + params.push({ name: param.name, variadic: true }); + variadic = true; + break; + } else { + params.push({ name: param.name }); + } + } else { + params.push({ value: param }); + } + } else { + break; + } + } while ($(',')) + + expect(')'); + + 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, t, c, v; + + c = $(this.combinator); + e = $(/^(?:\d+\.\d+|\d+)%/) || $(/^(?:[.#]?|:*)(?:[\w-]|\\(?:[a-fA-F0-9]{1,6} ?|[^a-fA-F0-9]))+/) || + $('*') || $(this.attribute) || $(/^\([^)@]+\)/); + + if (! e) { + $('(') && (v = $(this.entities.variable)) && $(')') && (e = new(tree.Paren)(v)); + } + + if (e) { return new(tree.Element)(c, e, i) } + + if (c.value && c.value.charAt(0) === '&') { + return new(tree.Element)(c, null, i); + } + }, + + // + // Combinators combine elements together, in a Selector. + // + // Because our parser isn't white-space sensitive, special care + // has to be taken, when parsing the descendant combinator, ` `, + // as it's an empty space. We have to check the previous character + // in the input, to see if it's a ` ` character. More info on how + // we deal with this in *combinator.js*. + // + combinator: function () { + var match, c = input.charAt(i); + + if (c === '>' || c === '+' || c === '~') { + i++; + while (input.charAt(i) === ' ') { i++ } + return new(tree.Combinator)(c); + } else if (c === '&') { + match = '&'; + i++; + if(input.charAt(i) === ' ') { + match = '& '; + } + while (input.charAt(i) === ' ') { i++ } + return new(tree.Combinator)(match); + } else if (input.charAt(i - 1) === ' ') { + return new(tree.Combinator)(" "); + } else { + return new(tree.Combinator)(null); + } + }, + + // + // A CSS Selector + // + // .class > div + h1 + // li a:hover + // + // Selectors are made out of one or more Elements, see above. + // + selector: function () { + var sel, e, elements = [], c, match; + + if ($('(')) { + sel = $(this.entity); + expect(')'); + return new(tree.Selector)([new(tree.Element)('', sel, i)]); + } + + while (e = $(this.element)) { + c = input.charAt(i); + elements.push(e) + if (c === '{' || c === '}' || c === ';' || c === ',') { break } + } + + if (elements.length > 0) { return new(tree.Selector)(elements) } + }, + tag: function () { + return $(/^[a-zA-Z][a-zA-Z-]*[0-9]?/) || $('*'); + }, + attribute: function () { + var attr = '', key, val, op; + + if (! $('[')) return; + + if (key = $(/^[a-zA-Z-]+/) || $(this.entities.quoted)) { + if ((op = $(/^[|~*$^]?=/)) && + (val = $(this.entities.quoted) || $(/^[\w-]+/))) { + attr = [key, op, val.toCSS ? val.toCSS() : val].join(''); + } else { attr = key } + } + + if (! $(']')) return; + + if (attr) { return "[" + attr + "]" } + }, + + // + // The `block` rule is used by `ruleset` and `mixin.definition`. + // It's a wrapper around the `primary` rule, with added `{}`. + // + block: function () { + var content; + + if ($('{') && (content = $(this.primary)) && $('}')) { + return content; + } + }, + + // + // div, .class, body > p {...} + // + ruleset: function () { + var selectors = [], s, rules, match; + save(); + + while (s = $(this.selector)) { + selectors.push(s); + $(this.comment); + if (! $(',')) { break } + $(this.comment); + } + + if (selectors.length > 0 && (rules = $(this.block))) { + return new(tree.Ruleset)(selectors, rules, env.strictImports); + } else { + // Backtrack + furthest = i; + restore(); + } + }, + rule: function () { + var name, value, c = input.charAt(i), important, match; + save(); + + if (c === '.' || c === '#' || c === '&') { return } + + if (name = $(this.variable) || $(this.property)) { + if ((name.charAt(0) != '@') && (match = /^([^@+\/'"*`(;{}-]*);/.exec(chunks[j]))) { + i += match[0].length - 1; + value = new(tree.Anonymous)(match[1]); + } else if (name === "font") { + value = $(this.font); + } else { + value = $(this.value); + } + important = $(this.important); + + if (value && $(this.end)) { + return new(tree.Rule)(name, value, important, memo); + } else { + furthest = i; + restore(); + } + } + }, + + // + // 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; + var dir = $(/^@import(?:-(once))?\s+/); + + if (dir && (path = $(this.entities.quoted) || $(this.entities.url))) { + features = $(this.mediaFeatures); + if ($(';')) { + return new(tree.Import)(path, imports, features, (dir[1] === 'once'), index); + } + } + }, + + mediaFeature: function () { + var e, p, nodes = []; + + do { + if (e = $(this.entities.keyword)) { + nodes.push(e); + } else if ($('(')) { + p = $(this.property); + e = $(this.entity); + if ($(')')) { + if (p && e) { + nodes.push(new(tree.Paren)(new(tree.Rule)(p, e, null, i, 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 (! $(',')) { break } + } + } while (e); + + return features.length > 0 ? features : null; + }, + + media: function () { + var features, rules; + + if ($(/^@media/)) { + features = $(this.mediaFeatures); + + if (rules = $(this.block)) { + return new(tree.Media)(rules, features); + } + } + }, + + // + // A CSS Directive + // + // @charset "utf-8"; + // + directive: function () { + var name, value, rules, types, e, nodes; + + if (input.charAt(i) !== '@') return; + + if (value = $(this['import']) || $(this.media)) { + return value; + } else if (name = $(/^@page|@keyframes/) || $(/^@(?:-webkit-|-moz-|-o-|-ms-)[a-z0-9-]+/)) { + types = ($(/^[^{]+/) || '').trim(); + if (rules = $(this.block)) { + return new(tree.Directive)(name + " " + types, rules); + } + } else if (name = $(/^@[-a-z]+/)) { + if (name === '@font-face') { + if (rules = $(this.block)) { + return new(tree.Directive)(name, rules); + } + } else if ((value = $(this.entity)) && $(';')) { + return new(tree.Directive)(name, value); + } + } + }, + font: function () { + var value = [], expression = [], weight, shorthand, font, e; + + while (e = $(this.shorthand) || $(this.entity)) { + expression.push(e); + } + value.push(new(tree.Expression)(expression)); + + if ($(',')) { + while (e = $(this.expression)) { + value.push(e); + if (! $(',')) { break } + } + } + return new(tree.Value)(value); + }, + + // + // 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 = [], important; + + 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 $(/^! *important/); + } + }, + sub: function () { + var e; + + if ($('(') && (e = $(this.expression)) && $(')')) { + return e; + } + }, + multiplication: function () { + var m, a, op, operation; + if (m = $(this.operand)) { + while (!peek(/^\/\*/) && (op = ($('/') || $('*'))) && (a = $(this.operand))) { + operation = new(tree.Operation)(op, [operation || m, a]); + } + return operation || m; + } + }, + addition: function () { + var m, a, op, operation; + if (m = $(this.multiplication)) { + while ((op = $(/^[-+]\s+/) || (input.charAt(i - 1) != ' ' && ($('+') || $('-')))) && + (a = $(this.multiplication))) { + operation = new(tree.Operation)(op, [operation || m, a]); + } + return operation || m; + } + }, + conditions: function () { + var a, b, index = i, condition; + + if (a = $(this.condition)) { + while ($(',') && (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); + return negate ? new(tree.Operation)('*', [new(tree.Dimension)(-1), o]) + : o; + }, + + // + // Expressions either represent mathematical operations, + // or white-space delimited Entities. + // + // 1px solid black + // @var * 2 + // + expression: function () { + var e, delim, entities = [], d; + + while (e = $(this.addition) || $(this.entity)) { + entities.push(e); + } + if (entities.length > 0) { + return new(tree.Expression)(entities); + } + }, + property: function () { + var name; + + if (name = $(/^(\*?-?[-a-z_0-9]+)\s*:/)) { + return name[1]; + } + } + } + }; +}; + +if (less.mode === 'browser' || less.mode === 'rhino') { + // + // Used by `@import` directives + // + less.Parser.importer = function (path, paths, callback, env) { + if (!/^([a-z]+:)?\//.test(path) && paths.length > 0) { + path = paths[0] + path; + } + // We pass `true` as 3rd argument, to force the reload of the import. + // This is so we can get the syntax tree as opposed to just the CSS output, + // as we need this to evaluate the current stylesheet. + loadStyleSheet({ href: path, title: path, type: env.mime }, function (e) { + if (e && typeof(env.errback) === "function") { + env.errback.call(null, path, paths, callback, env); + } else { + callback.apply(null, arguments); + } + }, true); + }; +} + +(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 number(c) }), + 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) { + h = (number(h) % 360) / 360; + s = number(s); l = number(l); a = 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); + + 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; + } + }, + 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), '%'); + }, + alpha: function (color) { + return new(tree.Dimension)(color.toHSL().a); + }, + saturate: function (color, amount) { + 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) { + 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)); + }, + 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++) { + 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); + }, + round: function (n) { + return this._math('round', n); + }, + ceil: function (n) { + return this._math('ceil', n); + }, + floor: function (n) { + return this._math('floor', n); + }, + _math: function (fn, n) { + if (n instanceof tree.Dimension) { + return new(tree.Dimension)(Math[fn](number(n)), n.unit); + } else if (typeof(n) === 'number') { + return Math[fn](n); + } else { + throw { type: "Argument", message: "argument must be a number" }; + } + }, + 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) { + return new(tree.Color)(n.value.slice(1)); + } 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 (n instanceof tree.Dimension) && n.unit === 'px' ? tree.True : tree.False; + }, + ispercentage: function (n) { + return (n instanceof tree.Dimension) && n.unit === '%' ? tree.True : tree.False; + }, + isem: function (n) { + return (n instanceof tree.Dimension) && n.unit === 'em' ? tree.True : tree.False; + }, + _isa: function (n, Type) { + return (n instanceof Type) ? tree.True : tree.False; + } +}; + +function hsla(hsla) { + return tree.functions.hsla(hsla.h, hsla.s, hsla.l, hsla.a); +} + +function number(n) { + if (n instanceof tree.Dimension) { + return parseFloat(n.unit == '%' ? 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)); +} + +})(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.Alpha = function (val) { + this.value = val; +}; +tree.Alpha.prototype = { + toCSS: function () { + return "alpha(opacity=" + + (this.value.toCSS ? this.value.toCSS() : this.value) + ")"; + }, + eval: function (env) { + if (this.value.eval) { this.value = this.value.eval(env) } + return this; + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Anonymous = function (string) { + this.value = string.value || string; +}; +tree.Anonymous.prototype = { + toCSS: function () { + return this.value; + }, + eval: function () { return this } +}; + +})(require('../tree')); +(function (tree) { + +tree.Assignment = function (key, val) { + this.key = key; + this.value = val; +}; +tree.Assignment.prototype = { + toCSS: function () { + return this.key + '=' + (this.value.toCSS ? this.value.toCSS() : this.value); + }, + eval: function (env) { + if (this.value.eval) { this.value = this.value.eval(env) } + return this; + } +}; + +})(require('../tree'));(function (tree) { + +// +// A function call node. +// +tree.Call = function (name, args, index, filename) { + this.name = name; + this.args = args; + this.index = index; + this.filename = filename; +}; +tree.Call.prototype = { + // + // When evaluating a function call, + // we either find the function in `tree.functions` [1], + // in which case we call it, passing the evaluated arguments, + // or 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) }); + + if (this.name in tree.functions) { // 1. + try { + return tree.functions[this.name].apply(tree.functions, args); + } catch (e) { + throw { type: e.type || "Runtime", + message: "error evaluating function `" + this.name + "`" + + (e.message ? ': ' + e.message : ''), + index: this.index, filename: this.filename }; + } + } else { // 2. + return new(tree.Anonymous)(this.name + + "(" + args.map(function (a) { return a.toCSS() }).join(', ') + ")"); + } + }, + + toCSS: function (env) { + return this.eval(env).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; +}; +tree.Color.prototype = { + eval: function () { return this }, + + // + // 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. + // + toCSS: function () { + if (this.alpha < 1.0) { + return "rgba(" + this.rgb.map(function (c) { + return Math.round(c); + }).concat(this.alpha).join(', ') + ")"; + } else { + 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(''); + } + }, + + // + // 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 (op, other) { + var result = []; + + if (! (other instanceof tree.Color)) { + other = other.toColor(); + } + + for (var c = 0; c < 3; c++) { + result[c] = tree.operate(op, this.rgb[c], other.rgb[c]); + } + return new(tree.Color)(result, this.alpha + other.alpha); + }, + + 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 }; + }, + 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(''); + } +}; + + +})(require('../tree')); +(function (tree) { + +tree.Comment = function (value, silent) { + this.value = value; + this.silent = !!silent; +}; +tree.Comment.prototype = { + toCSS: function (env) { + return env.compress ? '' : this.value; + }, + eval: function () { return this } +}; + +})(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.eval = function (env) { + var a = this.lvalue.eval(env), + b = this.rvalue.eval(env); + + var i = this.index, result; + + var 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 === '=<'; + case 0: return 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 || null; +}; + +tree.Dimension.prototype = { + eval: function () { return this }, + toColor: function () { + return new(tree.Color)([this.value, this.value, this.value]); + }, + toCSS: function () { + var css = this.value + this.unit; + return css; + }, + + // In an operation between two Dimensions, + // we default to the first Dimension's unit, + // so `1px + 2em` will yield `3px`. + // In the future, we could implement some unit + // conversions such that `100cm + 10mm` would yield + // `101cm`. + operate: function (op, other) { + return new(tree.Dimension) + (tree.operate(op, this.value, other.value), + this.unit || other.unit); + }, + + // TODO: Perform unit conversion before comparing + compare: function (other) { + if (other instanceof tree.Dimension) { + if (other.value > this.value) { + return -1; + } else if (other.value < this.value) { + return 1; + } else { + return 0; + } + } else { + return -1; + } + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Directive = function (name, value, features) { + this.name = name; + + if (Array.isArray(value)) { + this.ruleset = new(tree.Ruleset)([], value); + this.ruleset.allowImports = true; + } else { + this.value = value; + } +}; +tree.Directive.prototype = { + toCSS: function (ctx, env) { + if (this.ruleset) { + this.ruleset.root = true; + return this.name + (env.compress ? '{' : ' {\n ') + + this.ruleset.toCSS(ctx, env).trim().replace(/\n/g, '\n ') + + (env.compress ? '}': '\n}\n'); + } else { + return this.name + ' ' + this.value.toCSS() + ';\n'; + } + }, + eval: function (env) { + env.frames.unshift(this); + this.ruleset = this.ruleset && this.ruleset.eval(env); + env.frames.shift(); + return this; + }, + variable: function (name) { return tree.Ruleset.prototype.variable.call(this.ruleset, name) }, + find: function () { return tree.Ruleset.prototype.find.apply(this.ruleset, arguments) }, + rulesets: function () { return tree.Ruleset.prototype.rulesets.apply(this.ruleset) } +}; + +})(require('../tree')); +(function (tree) { + +tree.Element = function (combinator, value, index) { + 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; +}; +tree.Element.prototype.eval = function (env) { + return new(tree.Element)(this.combinator, + this.value.eval ? this.value.eval(env) : this.value, + this.index); +}; +tree.Element.prototype.toCSS = function (env) { + return this.combinator.toCSS(env || {}) + (this.value.toCSS ? this.value.toCSS(env) : this.value); +}; + +tree.Combinator = function (value) { + if (value === ' ') { + this.value = ' '; + } else if (value === '& ') { + this.value = '& '; + } else { + this.value = value ? value.trim() : ""; + } +}; +tree.Combinator.prototype.toCSS = function (env) { + return { + '' : '', + ' ' : ' ', + '&' : '', + '& ' : ' ', + ':' : ' :', + '+' : env.compress ? '+' : ' + ', + '~' : env.compress ? '~' : ' ~ ', + '>' : env.compress ? '>' : ' > ' + }[this.value]; +}; + +})(require('../tree')); +(function (tree) { + +tree.Expression = function (value) { this.value = value }; +tree.Expression.prototype = { + eval: function (env) { + if (this.value.length > 1) { + return new(tree.Expression)(this.value.map(function (e) { + return e.eval(env); + })); + } else if (this.value.length === 1) { + return this.value[0].eval(env); + } else { + return this; + } + }, + toCSS: function (env) { + return this.value.map(function (e) { + return e.toCSS ? e.toCSS(env) : ''; + }).join(' '); + } +}; + +})(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, imports, features, once, index) { + var that = this; + + this.once = once; + this.index = index; + this._path = path; + this.features = features && new(tree.Value)(features); + + // The '.less' extension is optional + if (path instanceof tree.Quoted) { + this.path = /\.(le?|c)ss(\?.*)?$/.test(path.value) ? path.value : path.value + '.less'; + } else { + this.path = path.value.value || path.value; + } + + this.css = /css(\?.*)?$/.test(this.path); + + // Only pre-compile .less files + if (! this.css) { + imports.push(this.path, function (e, root, imported) { + if (e) { e.index = index } + if (imported && that.once) that.skip = imported; + that.root = root || new(tree.Ruleset)([], []); + }); + } +}; + +// +// 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 = { + toCSS: function (env) { + var features = this.features ? ' ' + this.features.toCSS(env) : ''; + + if (this.css) { + return "@import " + this._path.toCSS() + features + ';\n'; + } else { + return ""; + } + }, + eval: function (env) { + var ruleset, features = this.features && this.features.eval(env); + + if (this.skip) return []; + + if (this.css) { + return this; + } else { + ruleset = new(tree.Ruleset)([], this.root.rules.slice(0)); + + for (var i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.Import) { + Array.prototype + .splice + .apply(ruleset.rules, + [i, 1].concat(ruleset.rules[i].eval(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 = { + 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: `" + expression + "`" , + index: this.index }; + } + + for (var k in env.frames[0].variables()) { + 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 = { + eval: function () { return this }, + toCSS: function () { return this.value }, + 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) { + var el = new(tree.Element)('&', null, 0), + selectors = [new(tree.Selector)([el])]; + + this.features = new(tree.Value)(features); + this.ruleset = new(tree.Ruleset)(selectors, value); + this.ruleset.allowImports = true; +}; +tree.Media.prototype = { + toCSS: function (ctx, env) { + var features = this.features.toCSS(env); + + this.ruleset.root = (ctx.length === 0 || ctx[0].multiMedia); + return '@media ' + features + (env.compress ? '{' : ' {\n ') + + this.ruleset.toCSS(ctx, env).trim().replace(/\n/g, '\n ') + + (env.compress ? '}': '\n}\n'); + }, + eval: function (env) { + if (!env.mediaBlocks) { + env.mediaBlocks = []; + env.mediaPath = []; + } + + var blockIndex = env.mediaBlocks.length; + env.mediaPath.push(this); + env.mediaBlocks.push(this); + + var media = new(tree.Media)([], []); + media.features = this.features.eval(env); + + env.frames.unshift(this.ruleset); + media.ruleset = this.ruleset.eval(env); + env.frames.shift(); + + env.mediaBlocks[blockIndex] = media; + env.mediaPath.pop(); + + return env.mediaPath.length === 0 ? media.evalTop(env) : + media.evalNested(env) + }, + variable: function (name) { return tree.Ruleset.prototype.variable.call(this.ruleset, name) }, + find: function () { return tree.Ruleset.prototype.find.apply(this.ruleset, arguments) }, + rulesets: function () { return tree.Ruleset.prototype.rulesets.apply(this.ruleset) }, + + evalTop: function (env) { + var result = this; + + // Render all dependent Media blocks. + if (env.mediaBlocks.length > 1) { + var el = new(tree.Element)('&', null, 0); + var selectors = [new(tree.Selector)([el])]; + 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; + } + } +}; + +})(require('../tree')); +(function (tree) { + +tree.mixin = {}; +tree.mixin.Call = function (elements, args, index, filename, important) { + this.selector = new(tree.Selector)(elements); + this.arguments = args; + this.index = index; + this.filename = filename; + this.important = important; +}; +tree.mixin.Call.prototype = { + eval: function (env) { + var mixins, args, rules = [], match = false; + + for (var i = 0; i < env.frames.length; i++) { + if ((mixins = env.frames[i].find(this.selector)).length > 0) { + args = this.arguments && this.arguments.map(function (a) { return a.eval(env) }); + for (var m = 0; m < mixins.length; m++) { + if (mixins[m].match(args, env)) { + try { + Array.prototype.push.apply( + rules, mixins[m].eval(env, this.arguments, this.important).rules); + match = true; + } catch (e) { + throw { message: e.message, index: this.index, filename: this.filename, stack: e.stack }; + } + } + } + if (match) { + return rules; + } else { + throw { type: 'Runtime', + message: 'No matching definition was found for `' + + this.selector.toCSS().trim() + '(' + + this.arguments.map(function (a) { + return a.toCSS(); + }).join(', ') + ")`", + index: this.index, filename: this.filename }; + } + } + } + throw { type: 'Name', + message: this.selector.toCSS().trim() + " is undefined", + index: this.index, filename: this.filename }; + } +}; + +tree.mixin.Definition = function (name, params, rules, condition, variadic) { + this.name = name; + this.selectors = [new(tree.Selector)([new(tree.Element)(null, name)])]; + 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 = { + toCSS: function () { return "" }, + 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, args) { + var frame = new(tree.Ruleset)(null, []), varargs; + + for (var i = 0, val, name; i < this.params.length; i++) { + if (name = this.params[i].name) { + if (this.params[i].variadic && args) { + varargs = []; + for (var j = i; j < args.length; j++) { + varargs.push(args[j].eval(env)); + } + frame.rules.unshift(new(tree.Rule)(name, new(tree.Expression)(varargs).eval(env))); + } else if (val = (args && args[i]) || this.params[i].value) { + frame.rules.unshift(new(tree.Rule)(name, val.eval(env))); + } else { + throw { type: 'Runtime', message: "wrong number of arguments for " + this.name + + ' (' + args.length + ' for ' + this.arity + ')' }; + } + } + } + return frame; + }, + eval: function (env, args, important) { + var frame = this.evalParams(env, args), context, _arguments = [], rules, start; + + for (var i = 0; i < Math.max(this.params.length, args && args.length); i++) { + _arguments.push(args[i] || this.params[i].value); + } + frame.rules.unshift(new(tree.Rule)('@arguments', new(tree.Expression)(_arguments).eval(env))); + + rules = important ? + this.rules.map(function (r) { + return new(tree.Rule)(r.name, r.value, '!important', r.index); + }) : this.rules.slice(0); + + return new(tree.Ruleset)(null, rules).eval({ + frames: [this, frame].concat(this.frames, env.frames) + }); + }, + match: function (args, env) { + var argsLength = (args && args.length) || 0, len, frame; + + if (! this.variadic) { + if (argsLength < this.required) { return false } + if (argsLength > this.params.length) { return false } + if ((this.required > 0) && (argsLength > this.params.length)) { return false } + } + + if (this.condition && !this.condition.eval({ + frames: [this.evalParams(env, args)].concat(env.frames) + })) { return false } + + len = Math.min(argsLength, this.arity); + + for (var i = 0; i < len; i++) { + if (!this.params[i].name) { + if (args[i].eval(env).toCSS() != this.params[i].value.eval(env).toCSS()) { + return false; + } + } + } + return true; + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Operation = function (op, operands) { + this.op = op.trim(); + this.operands = operands; +}; +tree.Operation.prototype.eval = function (env) { + var a = this.operands[0].eval(env), + b = this.operands[1].eval(env), + temp; + + if (a instanceof tree.Dimension && b instanceof tree.Color) { + if (this.op === '*' || this.op === '+') { + temp = b, b = a, a = temp; + } else { + throw { name: "OperationError", + message: "Can't substract or divide a color from a number" }; + } + } + return a.operate(this.op, b); +}; + +tree.operate = function (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 = { + toCSS: function (env) { + return '(' + this.value.toCSS(env) + ')'; + }, + eval: function (env) { + return new(tree.Paren)(this.value.eval(env)); + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Quoted = function (str, content, escaped, i) { + this.escaped = escaped; + this.value = content || ''; + this.quote = str.charAt(0); + this.index = i; +}; +tree.Quoted.prototype = { + toCSS: function () { + if (this.escaped) { + return this.value; + } else { + return this.quote + this.value + this.quote; + } + }, + 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).eval(env); + return ('value' in v) ? v.value : v.toCSS(); + }); + return new(tree.Quoted)(this.quote + value + this.quote, value, this.escaped, this.index); + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Rule = function (name, value, important, index, inline) { + this.name = name; + this.value = (value instanceof tree.Value) ? value : new(tree.Value)([value]); + this.important = important ? ' ' + important.trim() : ''; + this.index = index; + this.inline = inline || false; + + if (name.charAt(0) === '@') { + this.variable = true; + } else { this.variable = false } +}; + +tree.Rule.prototype.toCSS = function (env) { + if (this.variable) { return "" } + else { + return this.name + (env.compress ? ':' : ': ') + + this.value.toCSS(env) + + this.important + (this.inline ? "" : ";"); + } +}; + +tree.Rule.prototype.eval = function (context) { + // resolve a variable variable declaration + if(this.name.charAt(1) === '@') { + var refCount = this.name.match(/^@+/)[0].length; + var resolvedName = this.name.substr(refCount-1); + for(; refCount; --refCount){ + var refVar = context.frames[0].variables()[resolvedName]; + if(refVar){ + // if the referenced variable has been returned from the context's variables() function + // from the contexts rule array choose option 2 in this ternary comparison. + resolvedName = '@'; + resolvedName + = refVar.value.value[0].value[0].value ? + refVar.value.value[0].value[0].value : + refVar.value.value[0].value; + } + } + var newVariable = context.frames[0].variables()[this.name]; + context.frames[0].variables()[resolvedName] = newVariable; + delete context.frames[0].variables()[this.name]; + context.frames[0].variables()[resolvedName].name = resolvedName; + this.name = resolvedName; + } + return new(tree.Rule)(this.name, + this.value.eval(context), + this.important, + this.index, this.inline); +}; + +tree.Shorthand = function (a, b) { + this.a = a; + this.b = b; +}; + +tree.Shorthand.prototype = { + toCSS: function (env) { + return this.a.toCSS(env) + "/" + this.b.toCSS(env); + }, + eval: function () { return this } +}; + +})(require('../tree')); +(function (tree) { + +tree.Ruleset = function (selectors, rules, strictImports) { + this.selectors = selectors; + this.rules = rules; + this._lookups = {}; + this.strictImports = strictImports; +}; +tree.Ruleset.prototype = { + 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); + + ruleset.root = this.root; + ruleset.allowImports = this.allowImports; + + // push the current ruleset to the frames stack + env.frames.unshift(ruleset); + + // Evaluate imports + if (ruleset.root || ruleset.allowImports || !ruleset.strictImports) { + for (var i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.Import) { + Array.prototype.splice + .apply(ruleset.rules, [i, 1].concat(ruleset.rules[i].eval(env))); + } + } + } + + // Store the frames around mixin definitions, + // so they can be evaluated like closures when the time comes. + for (var i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.mixin.Definition) { + ruleset.rules[i].frames = env.frames.slice(0); + } + } + + // Evaluate mixin calls. + for (var i = 0; i < ruleset.rules.length; i++) { + if (ruleset.rules[i] instanceof tree.mixin.Call) { + Array.prototype.splice + .apply(ruleset.rules, [i, 1].concat(ruleset.rules[i].eval(env))); + } + } + + // Evaluate everything else + for (var i = 0, rule; 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(); + + return ruleset; + }, + match: function (args) { + return !args || args.length === 0; + }, + 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 () { + if (this._rulesets) { return this._rulesets } + else { + return this._rulesets = this.rules.filter(function (r) { + return (r instanceof tree.Ruleset) || (r instanceof tree.mixin.Definition); + }); + } + }, + find: function (selector, self) { + self = self || this; + var rules = [], rule, 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; + }, + // + // Entry point for code generation + // + // `context` holds an array of arrays. + // + toCSS: function (context, env) { + var css = [], // The CSS output + rules = [], // node.Rule instances + _rules = [], // + rulesets = [], // node.Ruleset instances + paths = [], // Current selectors + selector, // The fully rendered selector + rule; + + if (! this.root) { + if (context.length === 0) { + paths = this.selectors.map(function (s) { return [s] }); + } else { + this.joinSelectors(paths, context, this.selectors); + } + } + + // Compile rules and rulesets + for (var i = 0; i < this.rules.length; i++) { + rule = this.rules[i]; + + if (rule.rules || (rule instanceof tree.Directive) || (rule instanceof tree.Media)) { + rulesets.push(rule.toCSS(paths, env)); + } else if (rule instanceof tree.Comment) { + if (!rule.silent) { + if (this.root) { + rulesets.push(rule.toCSS(env)); + } else { + rules.push(rule.toCSS(env)); + } + } + } else { + if (rule.toCSS && !rule.variable) { + rules.push(rule.toCSS(env)); + } else if (rule.value && !rule.variable) { + rules.push(rule.value.toString()); + } + } + } + + rulesets = rulesets.join(''); + + // If this is the root node, we don't render + // a selector, or {}. + // Otherwise, only output if this ruleset has rules. + if (this.root) { + css.push(rules.join(env.compress ? '' : '\n')); + } else { + if (rules.length > 0) { + selector = paths.map(function (p) { + return p.map(function (s) { + return s.toCSS(env); + }).join('').trim(); + }).join(env.compress ? ',' : ',\n'); + + // Remove duplicates + for (var i = rules.length - 1; i >= 0; i--) { + if (_rules.indexOf(rules[i]) === -1) { + _rules.unshift(rules[i]); + } + } + rules = _rules; + + css.push(selector, + (env.compress ? '{' : ' {\n ') + + rules.join(env.compress ? '' : '\n ') + + (env.compress ? '}' : '\n}\n')); + } + } + css.push(rulesets); + + return css.join('') + (env.compress ? '\n' : ''); + }, + + 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 before = [], after = [], beforeElements = [], + afterElements = [], hasParentSelector = false, el; + + for (var i = 0; i < selector.elements.length; i++) { + el = selector.elements[i]; + if (el.combinator.value.charAt(0) === '&') { + hasParentSelector = true; + } + if (hasParentSelector) afterElements.push(el); + else beforeElements.push(el); + } + + if (! hasParentSelector) { + afterElements = beforeElements; + beforeElements = []; + } + + if (beforeElements.length > 0) { + before.push(new(tree.Selector)(beforeElements)); + } + + if (afterElements.length > 0) { + after.push(new(tree.Selector)(afterElements)); + } + + for (var c = 0; c < context.length; c++) { + paths.push(before.concat(context[c]).concat(after)); + } + } +}; +})(require('../tree')); +(function (tree) { + +tree.Selector = function (elements) { + this.elements = elements; + if (this.elements[0].combinator.value === "") { + this.elements[0].combinator.value = ' '; + } +}; +tree.Selector.prototype.match = function (other) { + var len = this.elements.length, + olen = other.elements.length, + max = Math.min(len, olen); + + if (len < olen) { + return false; + } else { + for (var i = 0; i < max; i++) { + if (this.elements[i].value !== other.elements[i].value) { + return false; + } + } + } + return true; +}; +tree.Selector.prototype.eval = function (env) { + return new(tree.Selector)(this.elements.map(function (e) { + return e.eval(env); + })); +}; +tree.Selector.prototype.toCSS = function (env) { + if (this._css) { return this._css } + + return this._css = this.elements.map(function (e) { + if (typeof(e) === 'string') { + return ' ' + e.trim(); + } else { + return e.toCSS(env); + } + }).join(''); +}; + +})(require('../tree')); +(function (tree) { + +tree.URL = function (val, paths) { + if (val.data) { + this.attrs = val; + } else { + // Add the base path if the URL is relative and we are in the browser + if (typeof(window) !== 'undefined' && !/^(?:https?:\/\/|file:\/\/|data:|\/)/.test(val.value) && paths.length > 0) { + val.value = paths[0] + (val.value.charAt(0) === '/' ? val.value.slice(1) : val.value); + } + this.value = val; + this.paths = paths; + } +}; +tree.URL.prototype = { + toCSS: function () { + return "url(" + (this.attrs ? 'data:' + this.attrs.mime + this.attrs.charset + this.attrs.base64 + this.attrs.data + : this.value.toCSS()) + ")"; + }, + eval: function (ctx) { + return this.attrs ? this : new(tree.URL)(this.value.eval(ctx), this.paths); + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Value = function (value) { + this.value = value; + this.is = 'value'; +}; +tree.Value.prototype = { + 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); + })); + } + }, + toCSS: function (env) { + return this.value.map(function (e) { + return e.toCSS(env); + }).join(env.compress ? ',' : ', '); + } +}; + +})(require('../tree')); +(function (tree) { + +tree.Variable = function (name, index, file) { this.name = name, this.index = index, this.file = file }; +tree.Variable.prototype = { + eval: function (env) { + var variable, v, name = this.name; + + if (name.indexOf('@@') == 0) { + name = '@' + new(tree.Variable)(name.slice(1)).eval(env).value; + } + + if (variable = tree.find(env.frames, function (frame) { + if (v = frame.variable(name)) { + return v.value.eval(env); + } + })) { return variable } + else { + throw { type: 'Name', + message: "variable " + name + " is undefined", + filename: this.file, + index: this.index }; + } + } +}; + +})(require('../tree')); +(function (tree) { + +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); + } +}; + +})(require('./tree')); +// +// browser.js - client-side engine +// + +var isFileProtocol = (location.protocol === 'file:' || + location.protocol === 'chrome:' || + location.protocol === 'chrome-extension:' || + location.protocol === 'resource:'); + +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'); + +// 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 = false; + +// Interval between watch polls +less.poll = less.poll || (isFileProtocol ? 1000 : 1500); + +// +// Watch mode +// +less.watch = function () { return this.watchMode = true }; +less.unwatch = function () { return this.watchMode = false }; + +if (less.env === 'development') { + less.optimization = 0; + + if (/!watch/.test(location.hash)) { + less.watch(); + } + less.watchTimer = setInterval(function () { + if (less.watchMode) { + loadStyleSheets(function (e, root, _, sheet, env) { + if (root) { + createCSS(root.toCSS(), sheet, env.lastModified); + } + }); + } + }, less.poll); +} else { + less.optimization = 3; +} + +var cache; + +try { + cache = (typeof(window.localStorage) === 'undefined') ? null : window.localStorage; +} catch (_) { + cache = null; +} + +// +// Get all tags with the 'rel' attribute set to "stylesheet/less" +// +var links = document.getElementsByTagName('link'); +var typePattern = /^text\/(x-)?less$/; + +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]); + } +} + + +less.refresh = function (reload) { + var startTime, endTime; + startTime = endTime = new(Date); + + loadStyleSheets(function (e, root, _, sheet, env) { + if (env.local) { + log("loading " + sheet.href + " from cache."); + } else { + log("parsed " + sheet.href + " successfully."); + createCSS(root.toCSS(), sheet, env.lastModified); + } + log("css for " + sheet.href + " generated in " + (new(Date) - endTime) + 'ms'); + (env.remaining === 0) && log("css generated in " + (new(Date) - startTime) + 'ms'); + endTime = new(Date); + }, reload); + + loadStyles(); +}; +less.refreshStyles = loadStyles; + +less.refresh(less.env === 'development'); + +function loadStyles() { + var styles = document.getElementsByTagName('style'); + for (var i = 0; i < styles.length; i++) { + if (styles[i].type.match(typePattern)) { + new(less.Parser)().parse(styles[i].innerHTML || '', function (e, tree) { + var css = tree.toCSS(); + var style = styles[i]; + style.type = 'text/css'; + if (style.styleSheet) { + style.styleSheet.cssText = css; + } else { + style.innerHTML = css; + } + }); + } + } +} + +function loadStyleSheets(callback, reload) { + for (var i = 0; i < less.sheets.length; i++) { + loadStyleSheet(less.sheets[i], callback, reload, less.sheets.length - (i + 1)); + } +} + +function loadStyleSheet(sheet, callback, reload, remaining) { + var url = window.location.href.replace(/[#?].*$/, ''); + var href = sheet.href.replace(/\?.*$/, ''); + var css = cache && cache.getItem(href); + var timestamp = cache && cache.getItem(href + ':timestamp'); + var styles = { css: css, timestamp: timestamp }; + + // Stylesheets in IE don't always return the full path + if (! /^(https?|file):/.test(href)) { + if (href.charAt(0) == "/") { + href = window.location.protocol + "//" + window.location.host + href; + } else { + href = url.slice(0, url.lastIndexOf('/') + 1) + href; + } + } + var filename = href.match(/([^\/]+)$/)[1]; + + xhr(sheet.href, sheet.type, function (data, lastModified) { + if (!reload && styles && lastModified && + (new(Date)(lastModified).valueOf() === + new(Date)(styles.timestamp).valueOf())) { + // Use local copy + createCSS(styles.css, sheet); + callback(null, null, data, sheet, { local: true, remaining: remaining }); + } else { + // Use remote copy (re-parse) + try { + new(less.Parser)({ + optimization: less.optimization, + paths: [href.replace(/[\w\.-]+$/, '')], + mime: sheet.type, + filename: filename + }).parse(data, function (e, root) { + if (e) { return error(e, href) } + try { + callback(e, root, data, sheet, { local: false, lastModified: lastModified, remaining: remaining }); + removeNode(document.getElementById('less-error-message:' + extractId(href))); + } catch (e) { + error(e, href); + } + }); + } catch (e) { + error(e, href); + } + } + }, function (status, url) { + throw new(Error)("Couldn't load " + url + " (" + status + ")"); + }); +} + +function extractId(href) { + return href.replace(/^[a-z]+:\/\/?[^\/]+/, '' ) // Remove protocol & domain + .replace(/^\//, '' ) // Remove root / + .replace(/\?.*$/, '' ) // Remove query + .replace(/\.[^\.\/]+$/, '' ) // Remove file extension + .replace(/[^\.\w-]+/g, '-') // Replace illegal characters + .replace(/\./g, ':'); // Replace dots with colons(for valid id) +} + +function createCSS(styles, sheet, lastModified) { + var css; + + // Strip the query-string + var href = sheet.href ? sheet.href.replace(/\?.*$/, '') : ''; + + // If there is no title set, use the filename, minus the extension + var id = 'less:' + (sheet.title || extractId(href)); + + // If the stylesheet doesn't exist, create a new node + if ((css = document.getElementById(id)) === null) { + css = document.createElement('style'); + css.type = 'text/css'; + css.media = sheet.media || 'screen'; + css.id = id; + document.getElementsByTagName('head')[0].appendChild(css); + } + + if (css.styleSheet) { // IE + try { + css.styleSheet.cssText = styles; + } catch (e) { + throw new(Error)("Couldn't reassign styleSheet.cssText."); + } + } else { + (function (node) { + if (css.childNodes.length > 0) { + if (css.firstChild.nodeValue !== node.nodeValue) { + css.replaceChild(node, css.firstChild); + } + } else { + css.appendChild(node); + } + })(document.createTextNode(styles)); + } + + // Don't update the local store if the file wasn't modified + if (lastModified && cache) { + log('saving ' + href + ' to cache.'); + cache.setItem(href, styles); + cache.setItem(href + ':timestamp', lastModified); + } +} + +function xhr(url, type, callback, errback) { + var xhr = getXMLHttpRequest(); + var async = isFileProtocol ? false : less.async; + + if (typeof(xhr.overrideMimeType) === 'function') { + xhr.overrideMimeType('text/css'); + } + xhr.open('GET', url, async); + xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5'); + xhr.send(null); + + if (isFileProtocol) { + 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 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); + } + } +} + +function getXMLHttpRequest() { + if (window.XMLHttpRequest) { + return new(XMLHttpRequest); + } else { + try { + return new(ActiveXObject)("MSXML2.XMLHTTP.3.0"); + } catch (e) { + log("browser doesn't support AJAX."); + return null; + } + } +} + +function removeNode(node) { + return node && node.parentNode.removeChild(node); +} + +function log(str) { + if (less.env == 'development' && typeof(console) !== "undefined") { console.log('less: ' + str) } +} + +function error(e, href) { + var id = 'less-error-message:' + extractId(href); + var template = '
  • {content}
    • '; + var elem = document.createElement('div'), timer, content, error = []; + var filename = e.filename || href; + + elem.id = id; + elem.className = "less-error-message"; + + content = '

    ' + (e.message || 'There is an error in your .less file') + + '

    ' + '

    in ' + filename + " "; + + var errorline = function (e, i, classname) { + if (e.extract[i]) { + error.push(template.replace(/\{line\}/, parseInt(e.line) + (i - 1)) + .replace(/\{class\}/, classname) + .replace(/\{content\}/, e.extract[i])); + } + }; + + if (e.stack) { + content += '
    ' + e.stack.split('\n').slice(1).join('
    '); + } else if (e.extract) { + errorline(e, 0, ''); + errorline(e, 1, 'line'); + errorline(e, 2, ''); + content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':

    ' + + '
      ' + error.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); + } +} + +})(window); diff --git a/lib/less/tree/rule.js b/lib/less/tree/rule.js index 97b14e747..b542765a9 100644 --- a/lib/less/tree/rule.js +++ b/lib/less/tree/rule.js @@ -22,20 +22,25 @@ tree.Rule.prototype.toCSS = function (env) { }; tree.Rule.prototype.eval = function (context) { + // resolve a variable variable declaration if(this.name.charAt(1) === '@') { var refCount = this.name.match(/^@+/)[0].length; var resolvedName = this.name.substr(refCount-1); for(; refCount; --refCount){ - var refVar = context.frames[0]._variables[resolvedName]; + var refVar = context.frames[0].variables()[resolvedName]; if(refVar){ - resolvedName = '@' + refVar.value.value[0].value[0].value; - console.log(resolvedName); + // if the referenced variable has been returned from the context's variables() function + // from the contexts rule array choose option 2 in this ternary comparison. + resolvedName = '@'; + resolvedName + = refVar.value.value[0].value[0].value ? + refVar.value.value[0].value[0].value : + refVar.value.value[0].value; } } - var newVariable = context.frames[0]._variables[this.name]; - context.frames[0]._variables[resolvedName] = newVariable; - delete context.frames[0]._variables[this.name]; - context.frames[0]._variables[resolvedName].name = resolvedName; + var newVariable = context.frames[0].variables()[this.name]; + context.frames[0].variables()[resolvedName] = newVariable; + delete context.frames[0].variables()[this.name]; + context.frames[0].variables()[resolvedName].name = resolvedName; this.name = resolvedName; } return new(tree.Rule)(this.name, From 631c1e09c7f52ac666247ea759bbd456acaf3c61 Mon Sep 17 00:00:00 2001 From: James Marshall-Gunn Date: Sun, 29 Apr 2012 21:38:48 +0200 Subject: [PATCH 5/5] syntax error removed --- lib/less/tree/rule.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/less/tree/rule.js b/lib/less/tree/rule.js index b542765a9..7a65f9c94 100644 --- a/lib/less/tree/rule.js +++ b/lib/less/tree/rule.js @@ -32,7 +32,7 @@ tree.Rule.prototype.eval = function (context) { // if the referenced variable has been returned from the context's variables() function // from the contexts rule array choose option 2 in this ternary comparison. resolvedName = '@'; - resolvedName + = refVar.value.value[0].value[0].value ? + resolvedName += refVar.value.value[0].value[0].value ? refVar.value.value[0].value[0].value : refVar.value.value[0].value; }