x/tuskar-ui
Code Issues Proposed changes

Readding bin dir which was mistakenly deleted.

Browse Source 
Change-Id: Ia8989da47a55f7c932115a976b6d799714b8dc56
This commit is contained in:
Gabriel Hurley 2012-10-12 15:35:19 -07:00
parent cb8e7c1f8f
commit 6f990c9ce4
34 changed files with 4100 additions and 0 deletions
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139
bin/less/lessc Executable file
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#!/usr/bin/env node
var path = require('path'),
fs = require('fs'),
sys = require('util'),
os = require('os');
var less = require('../lib/less');
var args = process.argv.slice(1);
var options = {
compress: false,
yuicompress: false,
optimization: 1,
silent: false,
paths: [],
color: true,
strictImports: false
};
args = args.filter(function (arg) {
var match;
if (match = arg.match(/^-I(.+)$/)) {
options.paths.push(match[1]);
return false;
}
if (match = arg.match(/^--?([a-z][0-9a-z-]*)(?:=([^\s]+))?$/i)) { arg = match[1] }
else { return arg }
switch (arg) {
case 'v':
case 'version':
sys.puts("lessc " + less.version.join('.') + " (LESS Compiler) [JavaScript]");
process.exit(0);
case 'verbose':
options.verbose = true;
break;
case 's':
case 'silent':
options.silent = true;
break;
case 'strict-imports':
options.strictImports = true;
break;
case 'h':
case 'help':
sys.puts("usage: lessc source [destination]");
process.exit(0);
case 'x':
case 'compress':
options.compress = true;
break;
case 'yui-compress':
options.yuicompress = true;
break;
case 'no-color':
options.color = false;
break;
case 'include-path':
options.paths = match[2].split(os.type().match(/Windows/) ? ';' : ':')
.map(function(p) {
if (p) {
return path.resolve(process.cwd(), p);
}
});
break;
case 'O0': options.optimization = 0; break;
case 'O1': options.optimization = 1; break;
case 'O2': options.optimization = 2; break;
}
});
var input = args[1];
if (input && input != '-') {
input = path.resolve(process.cwd(), input);
}
var output = args[2];
if (output) {
output = path.resolve(process.cwd(), output);
}
var css, fd, tree;
if (! input) {
sys.puts("lessc: no input files");
process.exit(1);
}
var parseLessFile = function (e, data) {
if (e) {
sys.puts("lessc: " + e.message);
process.exit(1);
}
new(less.Parser)({
paths: [path.dirname(input)].concat(options.paths),
optimization: options.optimization,
filename: input,
strictImports: options.strictImports
}).parse(data, function (err, tree) {
if (err) {
less.writeError(err, options);
process.exit(1);
} else {
try {
css = tree.toCSS({
compress: options.compress,
yuicompress: options.yuicompress
});
if (output) {
fd = fs.openSync(output, "w");
fs.writeSync(fd, css, 0, "utf8");
} else {
sys.print(css);
}
} catch (e) {
less.writeError(e, options);
process.exit(2);
}
}
});
};
if (input != '-') {
fs.readFile(input, 'utf-8', parseLessFile);
} else {
process.stdin.resume();
process.stdin.setEncoding('utf8');
var buffer = '';
process.stdin.on('data', function(data) {
buffer += data;
});
process.stdin.on('end', function() {
parseLessFile(false, buffer);
});
}

380
bin/lib/less/browser.js Normal file
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//
// 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 <link> 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 = '<li><label>{line}</label><pre class="{class}">{content}</pre></li>';
var elem = document.createElement('div'), timer, content, error = [];
var filename = e.filename || href;
elem.id = id;
elem.className = "less-error-message";
content = '<h3>' + (e.message || 'There is an error in your .less file') +
'</h3>' + '<p>in <a href="' + filename + '">' + filename + "</a> ";
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 += '<br/>' + e.stack.split('\n').slice(1).join('<br/>');
} else if (e.extract) {
errorline(e, 0, '');
errorline(e, 1, 'line');
errorline(e, 2, '');
content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':</p>' +
'<ul>' + error.join('') + '</ul>';
}
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);
}
}

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bin/lib/less/colors.js Normal file
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(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',
'transparent':'rgba(0,0,0,0)',
'turquoise':'#40e0d0',
'violet':'#ee82ee',
'wheat':'#f5deb3',
'white':'#ffffff',
'whitesmoke':'#f5f5f5',
'yellow':'#ffff00',
'yellowgreen':'#9acd32'
};
})(require('./tree'));

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/**
* cssmin.js
* Author: Stoyan Stefanov - http://phpied.com/
* This is a JavaScript port of the CSS minification tool
* distributed with YUICompressor, itself a port
* of the cssmin utility by Isaac Schlueter - http://foohack.com/
* Permission is hereby granted to use the JavaScript version under the same
* conditions as the YUICompressor (original YUICompressor note below).
*/
/*
* YUI Compressor
* http://developer.yahoo.com/yui/compressor/
* Author: Julien Lecomte - http://www.julienlecomte.net/
* Copyright (c) 2011 Yahoo! Inc. All rights reserved.
* The copyrights embodied in the content of this file are licensed
* by Yahoo! Inc. under the BSD (revised) open source license.
*/
var YAHOO = YAHOO || {};
YAHOO.compressor = YAHOO.compressor || {};
/**
* Utility method to replace all data urls with tokens before we start
* compressing, to avoid performance issues running some of the subsequent
* regexes against large strings chunks.
*
* @private
* @method _extractDataUrls
* @param {String} css The input css
* @param {Array} The global array of tokens to preserve
* @returns String The processed css
*/
YAHOO.compressor._extractDataUrls = function (css, preservedTokens) {
// Leave data urls alone to increase parse performance.
var maxIndex = css.length - 1,
appendIndex = 0,
startIndex,
endIndex,
terminator,
foundTerminator,
sb = [],
m,
preserver,
token,
pattern = /url\(\s*(["']?)data\:/g;
// Since we need to account for non-base64 data urls, we need to handle
// ' and ) being part of the data string. Hence switching to indexOf,
// to determine whether or not we have matching string terminators and
// handling sb appends directly, instead of using matcher.append* methods.
while ((m = pattern.exec(css)) !== null) {
startIndex = m.index + 4; // "url(".length()
terminator = m[1]; // ', " or empty (not quoted)
if (terminator.length === 0) {
terminator = ")";
}
foundTerminator = false;
endIndex = pattern.lastIndex - 1;
while(foundTerminator === false && endIndex+1 <= maxIndex) {
endIndex = css.indexOf(terminator, endIndex + 1);
// endIndex == 0 doesn't really apply here
if ((endIndex > 0) && (css.charAt(endIndex - 1) !== '\\')) {
foundTerminator = true;
if (")" != terminator) {
endIndex = css.indexOf(")", endIndex);
}
}
}
// Enough searching, start moving stuff over to the buffer
sb.push(css.substring(appendIndex, m.index));
if (foundTerminator) {
token = css.substring(startIndex, endIndex);
token = token.replace(/\s+/g, "");
preservedTokens.push(token);
preserver = "url(___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___)";
sb.push(preserver);
appendIndex = endIndex + 1;
} else {
// No end terminator found, re-add the whole match. Should we throw/warn here?
sb.push(css.substring(m.index, pattern.lastIndex));
appendIndex = pattern.lastIndex;
}
}
sb.push(css.substring(appendIndex));
return sb.join("");
};
/**
* Utility method to compress hex color values of the form #AABBCC to #ABC.
*
* DOES NOT compress CSS ID selectors which match the above pattern (which would break things).
* e.g. #AddressForm { ... }
*
* DOES NOT compress IE filters, which have hex color values (which would break things).
* e.g. filter: chroma(color="#FFFFFF");
*
* DOES NOT compress invalid hex values.
* e.g. background-color: #aabbccdd
*
* @private
* @method _compressHexColors
* @param {String} css The input css
* @returns String The processed css
*/
YAHOO.compressor._compressHexColors = function(css) {
// Look for hex colors inside { ... } (to avoid IDs) and which don't have a =, or a " in front of them (to avoid filters)
var pattern = /(\=\s*?["']?)?#([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])(\}|[^0-9a-f{][^{]*?\})/gi,
m,
index = 0,
isFilter,
sb = [];
while ((m = pattern.exec(css)) !== null) {
sb.push(css.substring(index, m.index));
isFilter = m[1];
if (isFilter) {
// Restore, maintain case, otherwise filter will break
sb.push(m[1] + "#" + (m[2] + m[3] + m[4] + m[5] + m[6] + m[7]));
} else {
if (m[2].toLowerCase() == m[3].toLowerCase() &&
m[4].toLowerCase() == m[5].toLowerCase() &&
m[6].toLowerCase() == m[7].toLowerCase()) {
// Compress.
sb.push("#" + (m[3] + m[5] + m[7]).toLowerCase());
} else {
// Non compressible color, restore but lower case.
sb.push("#" + (m[2] + m[3] + m[4] + m[5] + m[6] + m[7]).toLowerCase());
}
}
index = pattern.lastIndex = pattern.lastIndex - m[8].length;
}
sb.push(css.substring(index));
return sb.join("");
};
YAHOO.compressor.cssmin = function (css, linebreakpos) {
var startIndex = 0,
endIndex = 0,
i = 0, max = 0,
preservedTokens = [],
comments = [],
token = '',
totallen = css.length,
placeholder = '';
css = this._extractDataUrls(css, preservedTokens);
// collect all comment blocks...
while ((startIndex = css.indexOf("/*", startIndex)) >= 0) {
endIndex = css.indexOf("*/", startIndex + 2);
if (endIndex < 0) {
endIndex = totallen;
}
token = css.slice(startIndex + 2, endIndex);
comments.push(token);
css = css.slice(0, startIndex + 2) + "___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + (comments.length - 1) + "___" + css.slice(endIndex);
startIndex += 2;
}
// preserve strings so their content doesn't get accidentally minified
css = css.replace(/("([^\\"]|\\.|\\)*")|('([^\\']|\\.|\\)*')/g, function (match) {
var i, max, quote = match.substring(0, 1);
match = match.slice(1, -1);
// maybe the string contains a comment-like substring?
// one, maybe more? put'em back then
if (match.indexOf("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_") >= 0) {
for (i = 0, max = comments.length; i < max; i = i + 1) {
match = match.replace("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___", comments[i]);
}
}
// minify alpha opacity in filter strings
match = match.replace(/progid:DXImageTransform\.Microsoft\.Alpha\(Opacity=/gi, "alpha(opacity=");
preservedTokens.push(match);
return quote + "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___" + quote;
});
// strings are safe, now wrestle the comments
for (i = 0, max = comments.length; i < max; i = i + 1) {
token = comments[i];
placeholder = "___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___";
// ! in the first position of the comment means preserve
// so push to the preserved tokens keeping the !
if (token.charAt(0) === "!") {
preservedTokens.push(token);
css = css.replace(placeholder, "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___");
continue;
}
// \ in the last position looks like hack for Mac/IE5
// shorten that to /*\*/ and the next one to /**/
if (token.charAt(token.length - 1) === "\\") {
preservedTokens.push("\\");
css = css.replace(placeholder, "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___");
i = i + 1; // attn: advancing the loop
preservedTokens.push("");
css = css.replace("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___", "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___");
continue;
}
// keep empty comments after child selectors (IE7 hack)
// e.g. html >/**/ body
if (token.length === 0) {
startIndex = css.indexOf(placeholder);
if (startIndex > 2) {
if (css.charAt(startIndex - 3) === '>') {
preservedTokens.push("");
css = css.replace(placeholder, "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.length - 1) + "___");
}
}
}
// in all other cases kill the comment
css = css.replace("/*" + placeholder + "*/", "");
}
// Normalize all whitespace strings to single spaces. Easier to work with that way.
css = css.replace(/\s+/g, " ");
// Remove the spaces before the things that should not have spaces before them.
// But, be careful not to turn "p :link {...}" into "p:link{...}"
// Swap out any pseudo-class colons with the token, and then swap back.
css = css.replace(/(^|\})(([^\{:])+:)+([^\{]*\{)/g, function (m) {
return m.replace(":", "___YUICSSMIN_PSEUDOCLASSCOLON___");
});
css = css.replace(/\s+([!{};:>+\(\)\],])/g, '$1');
css = css.replace(/___YUICSSMIN_PSEUDOCLASSCOLON___/g, ":");
// retain space for special IE6 cases
css = css.replace(/:first-(line|letter)(\{|,)/g, ":first-$1 $2");
// no space after the end of a preserved comment
css = css.replace(/\*\/ /g, '*/');
// If there is a @charset, then only allow one, and push to the top of the file.
css = css.replace(/^(.*)(@charset "[^"]*";)/gi, '$2$1');
css = css.replace(/^(\s*@charset [^;]+;\s*)+/gi, '$1');
// Put the space back in some cases, to support stuff like
// @media screen and (-webkit-min-device-pixel-ratio:0){
css = css.replace(/\band\(/gi, "and (");
// Remove the spaces after the things that should not have spaces after them.
css = css.replace(/([!{}:;>+\(\[,])\s+/g, '$1');
// remove unnecessary semicolons
css = css.replace(/;+\}/g, "}");
// Replace 0(px,em,%) with 0.
css = css.replace(/([\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex)/gi, "$1$2");
// Replace 0 0 0 0; with 0.
css = css.replace(/:0 0 0 0(;|\})/g, ":0$1");
css = css.replace(/:0 0 0(;|\})/g, ":0$1");
css = css.replace(/:0 0(;|\})/g, ":0$1");
// Replace background-position:0; with background-position:0 0;
// same for transform-origin
css = css.replace(/(background-position|transform-origin|webkit-transform-origin|moz-transform-origin|o-transform-origin|ms-transform-origin):0(;|\})/gi, function(all, prop, tail) {
return prop.toLowerCase() + ":0 0" + tail;
});
// Replace 0.6 to .6, but only when preceded by : or a white-space
css = css.replace(/(:|\s)0+\.(\d+)/g, "$1.$2");
// Shorten colors from rgb(51,102,153) to #336699
// This makes it more likely that it'll get further compressed in the next step.
css = css.replace(/rgb\s*\(\s*([0-9,\s]+)\s*\)/gi, function () {
var i, rgbcolors = arguments[1].split(',');
for (i = 0; i < rgbcolors.length; i = i + 1) {
rgbcolors[i] = parseInt(rgbcolors[i], 10).toString(16);
if (rgbcolors[i].length === 1) {
rgbcolors[i] = '0' + rgbcolors[i];
}
}
return '#' + rgbcolors.join('');
});
// Shorten colors from #AABBCC to #ABC.
css = this._compressHexColors(css);
// border: none -> border:0
css = css.replace(/(border|border-top|border-right|border-bottom|border-right|outline|background):none(;|\})/gi, function(all, prop, tail) {
return prop.toLowerCase() + ":0" + tail;
});
// shorter opacity IE filter
css = css.replace(/progid:DXImageTransform\.Microsoft\.Alpha\(Opacity=/gi, "alpha(opacity=");
// Remove empty rules.
css = css.replace(/[^\};\{\/]+\{\}/g, "");
if (linebreakpos >= 0) {
// Some source control tools don't like it when files containing lines longer
// than, say 8000 characters, are checked in. The linebreak option is used in
// that case to split long lines after a specific column.
startIndex = 0;
i = 0;
while (i < css.length) {
i = i + 1;
if (css[i - 1] === '}' && i - startIndex > linebreakpos) {
css = css.slice(0, i) + '\n' + css.slice(i);
startIndex = i;
}
}
}
// Replace multiple semi-colons in a row by a single one
// See SF bug #1980989
css = css.replace(/;;+/g, ";");
// restore preserved comments and strings
for (i = 0, max = preservedTokens.length; i < max; i = i + 1) {
css = css.replace("___YUICSSMIN_PRESERVED_TOKEN_" + i + "___", preservedTokens[i]);
}
// Trim the final string (for any leading or trailing white spaces)
css = css.replace(/^\s+|\s+$/g, "");
return css;
};
exports.compressor = YAHOO.compressor;

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(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'));

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var path = require('path'),
sys = require('util'),
fs = require('fs');
var less = {
version: [1, 3, 0],
Parser: require('./parser').Parser,
importer: require('./parser').importer,
tree: require('./tree'),
render: function (input, options, callback) {
options = options || {};
if (typeof(options) === 'function') {
callback = options, options = {};
}
var parser = new(less.Parser)(options),
ee;
if (callback) {
parser.parse(input, function (e, root) {
callback(e, root && root.toCSS && root.toCSS(options));
});
} else {
ee = new(require('events').EventEmitter);
process.nextTick(function () {
parser.parse(input, function (e, root) {
if (e) { ee.emit('error', e) }
else { ee.emit('success', root.toCSS(options)) }
});
});
return ee;
}
},
writeError: function (ctx, options) {
options = options || {};
var message = "";
var extract = ctx.extract;
var error = [];
var stylize = options.color ? less.stylize : function (str) { return str };
if (options.silent) { return }
if (ctx.stack) { return sys.error(stylize(ctx.stack, 'red')) }
if (!ctx.hasOwnProperty('index')) {
return sys.error(ctx.stack || ctx.message);
}
if (typeof(extract[0]) === 'string') {
error.push(stylize((ctx.line - 1) + ' ' + extract[0], 'grey'));
}
if (extract[1]) {
error.push(ctx.line + ' ' + extract[1].slice(0, ctx.column)
+ stylize(stylize(stylize(extract[1][ctx.column], 'bold')
+ extract[1].slice(ctx.column + 1), 'red'), 'inverse'));
}
if (typeof(extract[2]) === 'string') {
error.push(stylize((ctx.line + 1) + ' ' + extract[2], 'grey'));
}
error = error.join('\n') + '\033[0m\n';
message += stylize(ctx.type + 'Error: ' + ctx.message, 'red');
ctx.filename && (message += stylize(' in ', 'red') + ctx.filename +
stylize(':' + ctx.line + ':' + ctx.column, 'grey'));
sys.error(message, error);
if (ctx.callLine) {
sys.error(stylize('from ', 'red') + (ctx.filename || ''));
sys.error(stylize(ctx.callLine, 'grey') + ' ' + ctx.callExtract);
}
}
};
['color', 'directive', 'operation', 'dimension',
'keyword', 'variable', 'ruleset', 'element',
'selector', 'quoted', 'expression', 'rule',
'call', 'url', 'alpha', 'import',
'mixin', 'comment', 'anonymous', 'value',
'javascript', 'assignment', 'condition', 'paren',
'media'
].forEach(function (n) {
require('./tree/' + n);
});
less.Parser.importer = function (file, paths, callback, env) {
var pathname;
// TODO: Undo this at some point,
// or use different approach.
paths.unshift('.');
for (var i = 0; i < paths.length; i++) {
try {
pathname = path.join(paths[i], file);
fs.statSync(pathname);
break;
} catch (e) {
pathname = null;
}
}
if (pathname) {
fs.readFile(pathname, 'utf-8', function(e, data) {
if (e) return callback(e);
new(less.Parser)({
paths: [path.dirname(pathname)].concat(paths),
filename: pathname
}).parse(data, function (e, root) {
callback(e, root, data);
});
});
} else {
if (typeof(env.errback) === "function") {
env.errback(file, paths, callback);
} else {
callback({ type: 'File', message: "'" + file + "' wasn't found.\n" });
}
}
}
require('./functions');
require('./colors');
for (var k in less) { exports[k] = less[k] }
// Stylize a string
function stylize(str, style) {
var styles = {
'bold' : [1, 22],
'inverse' : [7, 27],
'underline' : [4, 24],
'yellow' : [33, 39],
'green' : [32, 39],
'red' : [31, 39],
'grey' : [90, 39]
};
return '\033[' + styles[style][0] + 'm' + str +
'\033[' + styles[style][1] + 'm';
}
less.stylize = stylize;

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var name;
function loadStyleSheet(sheet, callback, reload, remaining) {
var sheetName = name.slice(0, name.lastIndexOf('/') + 1) + sheet.href;
var input = readFile(sheetName);
var parser = new less.Parser({
paths: [sheet.href.replace(/[\w\.-]+$/, '')]
});
parser.parse(input, function (e, root) {
if (e) {
print("Error: " + e);
quit(1);
}
callback(root, sheet, { local: false, lastModified: 0, remaining: remaining });
});
// callback({}, sheet, { local: true, remaining: remaining });
}
function writeFile(filename, content) {
var fstream = new java.io.FileWriter(filename);
var out = new java.io.BufferedWriter(fstream);
out.write(content);
out.close();
}
// Command line integration via Rhino
(function (args) {
name = args[0];
var output = args[1];
if (!name) {
print('No files present in the fileset; Check your pattern match in build.xml');
quit(1);
}
path = name.split("/");path.pop();path=path.join("/")
var input = readFile(name);
if (!input) {
print('lesscss: couldn\'t open file ' + name);
quit(1);
}
var result;
var parser = new less.Parser();
parser.parse(input, function (e, root) {
if (e) {
quit(1);
} else {
result = root.toCSS();
if (output) {
writeFile(output, result);
print("Written to " + output);
} else {
print(result);
}
quit(0);
}
});
print("done");
}(arguments));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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) {
var value = (this.value.toCSS ? this.value.toCSS(env) : this.value);
if (value == '' && this.combinator.value.charAt(0) == '&') {
return '';
} else {
return this.combinator.toCSS(env || {}) + value;
}
};
tree.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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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 { name: a.name, value: a.value.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, arg;
for (var i = 0, val, name; i < this.params.length; i++) {
arg = args && args[i]
if (arg && arg.name) {
frame.rules.unshift(new(tree.Rule)(arg.name, arg.value.eval(env)));
args.splice(i, 1);
i--;
continue;
}
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].value.eval(env));
}
frame.rules.unshift(new(tree.Rule)(name, new(tree.Expression)(varargs).eval(env)));
} else if (val = (arg && arg.value) || 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] && args[i].value) || 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].value.eval(env).toCSS() != this.params[i].value.eval(env).toCSS()) {
return false;
}
}
}
return true;
}
};
})(require('../tree'));

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(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'));

16
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(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'));

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(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'));

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(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) {
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'));

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(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'));

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(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'));

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(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'));

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(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'));

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(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'));