--- /dev/null
+/*!
+ * Less - Leaner CSS v2.7.3
+ * http://lesscss.org
+ *
+ * Copyright (c) 2009-2017, Alexis Sellier <self@cloudhead.net>
+ * Licensed under the Apache-2.0 License.
+ *
+ */
+
+ /** * @license Apache-2.0
+ */
+
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.less = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+var addDataAttr = require("./utils").addDataAttr,
+ browser = require("./browser");
+
+module.exports = function(window, options) {
+
+ // use options from the current script tag data attribues
+ addDataAttr(options, browser.currentScript(window));
+
+ if (options.isFileProtocol === undefined) {
+ options.isFileProtocol = /^(file|(chrome|safari)(-extension)?|resource|qrc|app):/.test(window.location.protocol);
+ }
+
+ // 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.
+ //
+ options.async = options.async || false;
+ options.fileAsync = options.fileAsync || false;
+
+ // Interval between watch polls
+ options.poll = options.poll || (options.isFileProtocol ? 1000 : 1500);
+
+ options.env = options.env || (window.location.hostname == '127.0.0.1' ||
+ window.location.hostname == '0.0.0.0' ||
+ window.location.hostname == 'localhost' ||
+ (window.location.port &&
+ window.location.port.length > 0) ||
+ options.isFileProtocol ? 'development'
+ : 'production');
+
+ var dumpLineNumbers = /!dumpLineNumbers:(comments|mediaquery|all)/.exec(window.location.hash);
+ if (dumpLineNumbers) {
+ options.dumpLineNumbers = dumpLineNumbers[1];
+ }
+
+ if (options.useFileCache === undefined) {
+ options.useFileCache = true;
+ }
+
+ if (options.onReady === undefined) {
+ options.onReady = true;
+ }
+
+};
+
+},{"./browser":3,"./utils":10}],2:[function(require,module,exports){
+/**
+ * Kicks off less and compiles any stylesheets
+ * used in the browser distributed version of less
+ * to kick-start less using the browser api
+ */
+/*global window, document */
+
+// shim Promise if required
+require('promise/polyfill.js');
+
+var options = window.less || {};
+require("./add-default-options")(window, options);
+
+var less = module.exports = require("./index")(window, options);
+
+window.less = less;
+
+var css, head, style;
+
+// Always restore page visibility
+function resolveOrReject(data) {
+ if (data.filename) {
+ console.warn(data);
+ }
+ if (!options.async) {
+ head.removeChild(style);
+ }
+}
+
+if (options.onReady) {
+ if (/!watch/.test(window.location.hash)) {
+ less.watch();
+ }
+ // Simulate synchronous stylesheet loading by blocking page rendering
+ if (!options.async) {
+ css = 'body { display: none !important }';
+ head = document.head || document.getElementsByTagName('head')[0];
+ style = document.createElement('style');
+
+ style.type = 'text/css';
+ if (style.styleSheet) {
+ style.styleSheet.cssText = css;
+ } else {
+ style.appendChild(document.createTextNode(css));
+ }
+
+ head.appendChild(style);
+ }
+ less.registerStylesheetsImmediately();
+ less.pageLoadFinished = less.refresh(less.env === 'development').then(resolveOrReject, resolveOrReject);
+}
+
+},{"./add-default-options":1,"./index":8,"promise/polyfill.js":97}],3:[function(require,module,exports){
+var utils = require("./utils");
+module.exports = {
+ createCSS: function (document, styles, sheet) {
+ // Strip the query-string
+ var href = sheet.href || '';
+
+ // If there is no title set, use the filename, minus the extension
+ var id = 'less:' + (sheet.title || utils.extractId(href));
+
+ // If this has already been inserted into the DOM, we may need to replace it
+ var oldStyleNode = document.getElementById(id);
+ var keepOldStyleNode = false;
+
+ // Create a new stylesheet node for insertion or (if necessary) replacement
+ var styleNode = document.createElement('style');
+ styleNode.setAttribute('type', 'text/css');
+ if (sheet.media) {
+ styleNode.setAttribute('media', sheet.media);
+ }
+ styleNode.id = id;
+
+ if (!styleNode.styleSheet) {
+ styleNode.appendChild(document.createTextNode(styles));
+
+ // If new contents match contents of oldStyleNode, don't replace oldStyleNode
+ keepOldStyleNode = (oldStyleNode !== null && oldStyleNode.childNodes.length > 0 && styleNode.childNodes.length > 0 &&
+ oldStyleNode.firstChild.nodeValue === styleNode.firstChild.nodeValue);
+ }
+
+ var head = document.getElementsByTagName('head')[0];
+
+ // If there is no oldStyleNode, just append; otherwise, only append if we need
+ // to replace oldStyleNode with an updated stylesheet
+ if (oldStyleNode === null || keepOldStyleNode === false) {
+ var nextEl = sheet && sheet.nextSibling || null;
+ if (nextEl) {
+ nextEl.parentNode.insertBefore(styleNode, nextEl);
+ } else {
+ head.appendChild(styleNode);
+ }
+ }
+ if (oldStyleNode && keepOldStyleNode === false) {
+ oldStyleNode.parentNode.removeChild(oldStyleNode);
+ }
+
+ // For IE.
+ // This needs to happen *after* the style element is added to the DOM, otherwise IE 7 and 8 may crash.
+ // See http://social.msdn.microsoft.com/Forums/en-US/7e081b65-878a-4c22-8e68-c10d39c2ed32/internet-explorer-crashes-appending-style-element-to-head
+ if (styleNode.styleSheet) {
+ try {
+ styleNode.styleSheet.cssText = styles;
+ } catch (e) {
+ throw new Error("Couldn't reassign styleSheet.cssText.");
+ }
+ }
+ },
+ currentScript: function(window) {
+ var document = window.document;
+ return document.currentScript || (function() {
+ var scripts = document.getElementsByTagName("script");
+ return scripts[scripts.length - 1];
+ })();
+ }
+};
+
+},{"./utils":10}],4:[function(require,module,exports){
+// Cache system is a bit outdated and could do with work
+
+module.exports = function(window, options, logger) {
+ var cache = null;
+ if (options.env !== 'development') {
+ try {
+ cache = (typeof window.localStorage === 'undefined') ? null : window.localStorage;
+ } catch (_) {}
+ }
+ return {
+ setCSS: function(path, lastModified, modifyVars, styles) {
+ if (cache) {
+ logger.info('saving ' + path + ' to cache.');
+ try {
+ cache.setItem(path, styles);
+ cache.setItem(path + ':timestamp', lastModified);
+ if (modifyVars) {
+ cache.setItem(path + ':vars', JSON.stringify(modifyVars));
+ }
+ } catch(e) {
+ //TODO - could do with adding more robust error handling
+ logger.error('failed to save "' + path + '" to local storage for caching.');
+ }
+ }
+ },
+ getCSS: function(path, webInfo, modifyVars) {
+ var css = cache && cache.getItem(path),
+ timestamp = cache && cache.getItem(path + ':timestamp'),
+ vars = cache && cache.getItem(path + ':vars');
+
+ modifyVars = modifyVars || {};
+
+ if (timestamp && webInfo.lastModified &&
+ (new Date(webInfo.lastModified).valueOf() ===
+ new Date(timestamp).valueOf()) &&
+ (!modifyVars && !vars || JSON.stringify(modifyVars) === vars)) {
+ // Use local copy
+ return css;
+ }
+ }
+ };
+};
+
+},{}],5:[function(require,module,exports){
+var utils = require("./utils"),
+ browser = require("./browser");
+
+module.exports = function(window, less, options) {
+
+ function errorHTML(e, rootHref) {
+ var id = 'less-error-message:' + utils.extractId(rootHref || "");
+ var template = '<li><label>{line}</label><pre class="{class}">{content}</pre></li>';
+ var elem = window.document.createElement('div'), timer, content, errors = [];
+ var filename = e.filename || rootHref;
+ var filenameNoPath = filename.match(/([^\/]+(\?.*)?)$/)[1];
+
+ elem.id = id;
+ elem.className = "less-error-message";
+
+ content = '<h3>' + (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') +
+ '</h3>' + '<p>in <a href="' + filename + '">' + filenameNoPath + "</a> ";
+
+ var errorline = function (e, i, classname) {
+ if (e.extract[i] !== undefined) {
+ errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1))
+ .replace(/\{class\}/, classname)
+ .replace(/\{content\}/, e.extract[i]));
+ }
+ };
+
+ if (e.extract) {
+ errorline(e, 0, '');
+ errorline(e, 1, 'line');
+ errorline(e, 2, '');
+ content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':</p>' +
+ '<ul>' + errors.join('') + '</ul>';
+ }
+ if (e.stack && (e.extract || options.logLevel >= 4)) {
+ content += '<br/>Stack Trace</br />' + e.stack.split('\n').slice(1).join('<br/>');
+ }
+ elem.innerHTML = content;
+
+ // CSS for error messages
+ browser.createCSS(window.document, [
+ '.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 (options.env === 'development') {
+ timer = setInterval(function () {
+ var document = window.document,
+ body = document.body;
+ if (body) {
+ if (document.getElementById(id)) {
+ body.replaceChild(elem, document.getElementById(id));
+ } else {
+ body.insertBefore(elem, body.firstChild);
+ }
+ clearInterval(timer);
+ }
+ }, 10);
+ }
+ }
+
+ function removeErrorHTML(path) {
+ var node = window.document.getElementById('less-error-message:' + utils.extractId(path));
+ if (node) {
+ node.parentNode.removeChild(node);
+ }
+ }
+
+ function removeErrorConsole(path) {
+ //no action
+ }
+
+ function removeError(path) {
+ if (!options.errorReporting || options.errorReporting === "html") {
+ removeErrorHTML(path);
+ } else if (options.errorReporting === "console") {
+ removeErrorConsole(path);
+ } else if (typeof options.errorReporting === 'function') {
+ options.errorReporting("remove", path);
+ }
+ }
+
+ function errorConsole(e, rootHref) {
+ var template = '{line} {content}';
+ var filename = e.filename || rootHref;
+ var errors = [];
+ var content = (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') +
+ " in " + filename + " ";
+
+ var errorline = function (e, i, classname) {
+ if (e.extract[i] !== undefined) {
+ errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1))
+ .replace(/\{class\}/, classname)
+ .replace(/\{content\}/, e.extract[i]));
+ }
+ };
+
+ if (e.extract) {
+ errorline(e, 0, '');
+ errorline(e, 1, 'line');
+ errorline(e, 2, '');
+ content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':\n' +
+ errors.join('\n');
+ }
+ if (e.stack && (e.extract || options.logLevel >= 4)) {
+ content += '\nStack Trace\n' + e.stack;
+ }
+ less.logger.error(content);
+ }
+
+ function error(e, rootHref) {
+ if (!options.errorReporting || options.errorReporting === "html") {
+ errorHTML(e, rootHref);
+ } else if (options.errorReporting === "console") {
+ errorConsole(e, rootHref);
+ } else if (typeof options.errorReporting === 'function') {
+ options.errorReporting("add", e, rootHref);
+ }
+ }
+
+ return {
+ add: error,
+ remove: removeError
+ };
+};
+
+},{"./browser":3,"./utils":10}],6:[function(require,module,exports){
+/*global window, XMLHttpRequest */
+
+module.exports = function(options, logger) {
+
+ var AbstractFileManager = require("../less/environment/abstract-file-manager.js");
+
+ var fileCache = {};
+
+ //TODOS - move log somewhere. pathDiff and doing something similar in node. use pathDiff in the other browser file for the initial load
+
+ function getXMLHttpRequest() {
+ if (window.XMLHttpRequest && (window.location.protocol !== "file:" || !("ActiveXObject" in window))) {
+ return new XMLHttpRequest();
+ } else {
+ try {
+ /*global ActiveXObject */
+ return new ActiveXObject("Microsoft.XMLHTTP");
+ } catch (e) {
+ logger.error("browser doesn't support AJAX.");
+ return null;
+ }
+ }
+ }
+
+ var FileManager = function() {
+ };
+
+ FileManager.prototype = new AbstractFileManager();
+
+ FileManager.prototype.alwaysMakePathsAbsolute = function alwaysMakePathsAbsolute() {
+ return true;
+ };
+ FileManager.prototype.join = function join(basePath, laterPath) {
+ if (!basePath) {
+ return laterPath;
+ }
+ return this.extractUrlParts(laterPath, basePath).path;
+ };
+ FileManager.prototype.doXHR = function doXHR(url, type, callback, errback) {
+
+ var xhr = getXMLHttpRequest();
+ var async = options.isFileProtocol ? options.fileAsync : true;
+
+ if (typeof xhr.overrideMimeType === 'function') {
+ xhr.overrideMimeType('text/css');
+ }
+ logger.debug("XHR: Getting '" + url + "'");
+ xhr.open('GET', url, async);
+ xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5');
+ xhr.send(null);
+
+ function handleResponse(xhr, callback, errback) {
+ if (xhr.status >= 200 && xhr.status < 300) {
+ callback(xhr.responseText,
+ xhr.getResponseHeader("Last-Modified"));
+ } else if (typeof errback === 'function') {
+ errback(xhr.status, url);
+ }
+ }
+
+ if (options.isFileProtocol && !options.fileAsync) {
+ if (xhr.status === 0 || (xhr.status >= 200 && xhr.status < 300)) {
+ callback(xhr.responseText);
+ } else {
+ errback(xhr.status, url);
+ }
+ } else if (async) {
+ xhr.onreadystatechange = function () {
+ if (xhr.readyState == 4) {
+ handleResponse(xhr, callback, errback);
+ }
+ };
+ } else {
+ handleResponse(xhr, callback, errback);
+ }
+ };
+ FileManager.prototype.supports = function(filename, currentDirectory, options, environment) {
+ return true;
+ };
+
+ FileManager.prototype.clearFileCache = function() {
+ fileCache = {};
+ };
+
+ FileManager.prototype.loadFile = function loadFile(filename, currentDirectory, options, environment, callback) {
+ if (currentDirectory && !this.isPathAbsolute(filename)) {
+ filename = currentDirectory + filename;
+ }
+
+ options = options || {};
+
+ // sheet may be set to the stylesheet for the initial load or a collection of properties including
+ // some context variables for imports
+ var hrefParts = this.extractUrlParts(filename, window.location.href);
+ var href = hrefParts.url;
+
+ if (options.useFileCache && fileCache[href]) {
+ try {
+ var lessText = fileCache[href];
+ callback(null, { contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
+ } catch (e) {
+ callback({filename: href, message: "Error loading file " + href + " error was " + e.message});
+ }
+ return;
+ }
+
+ this.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
+ // per file cache
+ fileCache[href] = data;
+
+ // Use remote copy (re-parse)
+ callback(null, { contents: data, filename: href, webInfo: { lastModified: lastModified }});
+ }, function doXHRError(status, url) {
+ callback({ type: 'File', message: "'" + url + "' wasn't found (" + status + ")", href: href });
+ });
+ };
+
+ return FileManager;
+};
+
+},{"../less/environment/abstract-file-manager.js":15}],7:[function(require,module,exports){
+module.exports = function() {
+
+ var functionRegistry = require("./../less/functions/function-registry");
+
+ function imageSize() {
+ throw {
+ type: "Runtime",
+ message: "Image size functions are not supported in browser version of less"
+ };
+ }
+
+ var imageFunctions = {
+ "image-size": function(filePathNode) {
+ imageSize(this, filePathNode);
+ return -1;
+ },
+ "image-width": function(filePathNode) {
+ imageSize(this, filePathNode);
+ return -1;
+ },
+ "image-height": function(filePathNode) {
+ imageSize(this, filePathNode);
+ return -1;
+ }
+ };
+
+ functionRegistry.addMultiple(imageFunctions);
+};
+
+},{"./../less/functions/function-registry":22}],8:[function(require,module,exports){
+//
+// index.js
+// Should expose the additional browser functions on to the less object
+//
+var addDataAttr = require("./utils").addDataAttr,
+ browser = require("./browser");
+
+module.exports = function(window, options) {
+ var document = window.document;
+ var less = require('../less')();
+
+ //module.exports = less;
+ less.options = options;
+ var environment = less.environment,
+ FileManager = require("./file-manager")(options, less.logger),
+ fileManager = new FileManager();
+ environment.addFileManager(fileManager);
+ less.FileManager = FileManager;
+
+ require("./log-listener")(less, options);
+ var errors = require("./error-reporting")(window, less, options);
+ var cache = less.cache = options.cache || require("./cache")(window, options, less.logger);
+ require('./image-size')(less.environment);
+
+ //Setup user functions
+ if (options.functions) {
+ less.functions.functionRegistry.addMultiple(options.functions);
+ }
+
+ var typePattern = /^text\/(x-)?less$/;
+
+ function postProcessCSS(styles) { // deprecated, use a plugin for postprocesstasks
+ if (options.postProcessor && typeof options.postProcessor === 'function') {
+ styles = options.postProcessor.call(styles, styles) || styles;
+ }
+ return styles;
+ }
+
+ function clone(obj) {
+ var cloned = {};
+ for (var prop in obj) {
+ if (obj.hasOwnProperty(prop)) {
+ cloned[prop] = obj[prop];
+ }
+ }
+ return cloned;
+ }
+
+ // only really needed for phantom
+ function bind(func, thisArg) {
+ var curryArgs = Array.prototype.slice.call(arguments, 2);
+ return function() {
+ var args = curryArgs.concat(Array.prototype.slice.call(arguments, 0));
+ return func.apply(thisArg, args);
+ };
+ }
+
+ function loadStyles(modifyVars) {
+ var styles = document.getElementsByTagName('style'),
+ style;
+
+ for (var i = 0; i < styles.length; i++) {
+ style = styles[i];
+ if (style.type.match(typePattern)) {
+ var instanceOptions = clone(options);
+ instanceOptions.modifyVars = modifyVars;
+ var lessText = style.innerHTML || '';
+ instanceOptions.filename = document.location.href.replace(/#.*$/, '');
+
+ /*jshint loopfunc:true */
+ // use closure to store current style
+ less.render(lessText, instanceOptions,
+ bind(function(style, e, result) {
+ if (e) {
+ errors.add(e, "inline");
+ } else {
+ style.type = 'text/css';
+ if (style.styleSheet) {
+ style.styleSheet.cssText = result.css;
+ } else {
+ style.innerHTML = result.css;
+ }
+ }
+ }, null, style));
+ }
+ }
+ }
+
+ function loadStyleSheet(sheet, callback, reload, remaining, modifyVars) {
+
+ var instanceOptions = clone(options);
+ addDataAttr(instanceOptions, sheet);
+ instanceOptions.mime = sheet.type;
+
+ if (modifyVars) {
+ instanceOptions.modifyVars = modifyVars;
+ }
+
+ function loadInitialFileCallback(loadedFile) {
+
+ var data = loadedFile.contents,
+ path = loadedFile.filename,
+ webInfo = loadedFile.webInfo;
+
+ var newFileInfo = {
+ currentDirectory: fileManager.getPath(path),
+ filename: path,
+ rootFilename: path,
+ relativeUrls: instanceOptions.relativeUrls};
+
+ newFileInfo.entryPath = newFileInfo.currentDirectory;
+ newFileInfo.rootpath = instanceOptions.rootpath || newFileInfo.currentDirectory;
+
+ if (webInfo) {
+ webInfo.remaining = remaining;
+
+ var css = cache.getCSS(path, webInfo, instanceOptions.modifyVars);
+ if (!reload && css) {
+ webInfo.local = true;
+ callback(null, css, data, sheet, webInfo, path);
+ return;
+ }
+
+ }
+
+ //TODO add tests around how this behaves when reloading
+ errors.remove(path);
+
+ instanceOptions.rootFileInfo = newFileInfo;
+ less.render(data, instanceOptions, function(e, result) {
+ if (e) {
+ e.href = path;
+ callback(e);
+ } else {
+ result.css = postProcessCSS(result.css);
+ cache.setCSS(sheet.href, webInfo.lastModified, instanceOptions.modifyVars, result.css);
+ callback(null, result.css, data, sheet, webInfo, path);
+ }
+ });
+ }
+
+ fileManager.loadFile(sheet.href, null, instanceOptions, environment, function(e, loadedFile) {
+ if (e) {
+ callback(e);
+ return;
+ }
+ loadInitialFileCallback(loadedFile);
+ });
+ }
+
+ function loadStyleSheets(callback, reload, modifyVars) {
+ for (var i = 0; i < less.sheets.length; i++) {
+ loadStyleSheet(less.sheets[i], callback, reload, less.sheets.length - (i + 1), modifyVars);
+ }
+ }
+
+ function initRunningMode() {
+ if (less.env === 'development') {
+ less.watchTimer = setInterval(function () {
+ if (less.watchMode) {
+ fileManager.clearFileCache();
+ loadStyleSheets(function (e, css, _, sheet, webInfo) {
+ if (e) {
+ errors.add(e, e.href || sheet.href);
+ } else if (css) {
+ browser.createCSS(window.document, css, sheet);
+ }
+ });
+ }
+ }, options.poll);
+ }
+ }
+
+ //
+ // Watch mode
+ //
+ less.watch = function () {
+ if (!less.watchMode ) {
+ less.env = 'development';
+ initRunningMode();
+ }
+ this.watchMode = true;
+ return true;
+ };
+
+ less.unwatch = function () {clearInterval(less.watchTimer); this.watchMode = false; return false; };
+
+ //
+ // Synchronously get all <link> tags with the 'rel' attribute set to
+ // "stylesheet/less".
+ //
+ less.registerStylesheetsImmediately = function() {
+ var links = document.getElementsByTagName('link');
+ less.sheets = [];
+
+ for (var i = 0; i < links.length; i++) {
+ if (links[i].rel === 'stylesheet/less' || (links[i].rel.match(/stylesheet/) &&
+ (links[i].type.match(typePattern)))) {
+ less.sheets.push(links[i]);
+ }
+ }
+ };
+
+ //
+ // Asynchronously get all <link> tags with the 'rel' attribute set to
+ // "stylesheet/less", returning a Promise.
+ //
+ less.registerStylesheets = function() {
+ return new Promise(function(resolve, reject) {
+ less.registerStylesheetsImmediately();
+ resolve();
+ });
+ };
+
+ //
+ // With this function, it's possible to alter variables and re-render
+ // CSS without reloading less-files
+ //
+ less.modifyVars = function(record) {
+ return less.refresh(true, record, false);
+ };
+
+ less.refresh = function (reload, modifyVars, clearFileCache) {
+ if ((reload || clearFileCache) && clearFileCache !== false) {
+ fileManager.clearFileCache();
+ }
+ return new Promise(function (resolve, reject) {
+ var startTime, endTime, totalMilliseconds, remainingSheets;
+ startTime = endTime = new Date();
+
+ // Set counter for remaining unprocessed sheets
+ remainingSheets = less.sheets.length;
+
+ if (remainingSheets === 0) {
+
+ endTime = new Date();
+ totalMilliseconds = endTime - startTime;
+ less.logger.info("Less has finished and no sheets were loaded.");
+ resolve({
+ startTime: startTime,
+ endTime: endTime,
+ totalMilliseconds: totalMilliseconds,
+ sheets: less.sheets.length
+ });
+
+ } else {
+ // Relies on less.sheets array, callback seems to be guaranteed to be called for every element of the array
+ loadStyleSheets(function (e, css, _, sheet, webInfo) {
+ if (e) {
+ errors.add(e, e.href || sheet.href);
+ reject(e);
+ return;
+ }
+ if (webInfo.local) {
+ less.logger.info("Loading " + sheet.href + " from cache.");
+ } else {
+ less.logger.info("Rendered " + sheet.href + " successfully.");
+ }
+ browser.createCSS(window.document, css, sheet);
+ less.logger.info("CSS for " + sheet.href + " generated in " + (new Date() - endTime) + 'ms');
+
+ // Count completed sheet
+ remainingSheets--;
+
+ // Check if the last remaining sheet was processed and then call the promise
+ if (remainingSheets === 0) {
+ totalMilliseconds = new Date() - startTime;
+ less.logger.info("Less has finished. CSS generated in " + totalMilliseconds + 'ms');
+ resolve({
+ startTime: startTime,
+ endTime: endTime,
+ totalMilliseconds: totalMilliseconds,
+ sheets: less.sheets.length
+ });
+ }
+ endTime = new Date();
+ }, reload, modifyVars);
+ }
+
+ loadStyles(modifyVars);
+ });
+ };
+
+ less.refreshStyles = loadStyles;
+ return less;
+};
+
+},{"../less":31,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./utils":10}],9:[function(require,module,exports){
+module.exports = function(less, options) {
+
+ var logLevel_debug = 4,
+ logLevel_info = 3,
+ logLevel_warn = 2,
+ logLevel_error = 1;
+
+ // The amount of logging in the javascript console.
+ // 3 - Debug, information and errors
+ // 2 - Information and errors
+ // 1 - Errors
+ // 0 - None
+ // Defaults to 2
+ options.logLevel = typeof options.logLevel !== 'undefined' ? options.logLevel : (options.env === 'development' ? logLevel_info : logLevel_error);
+
+ if (!options.loggers) {
+ options.loggers = [{
+ debug: function(msg) {
+ if (options.logLevel >= logLevel_debug) {
+ console.log(msg);
+ }
+ },
+ info: function(msg) {
+ if (options.logLevel >= logLevel_info) {
+ console.log(msg);
+ }
+ },
+ warn: function(msg) {
+ if (options.logLevel >= logLevel_warn) {
+ console.warn(msg);
+ }
+ },
+ error: function(msg) {
+ if (options.logLevel >= logLevel_error) {
+ console.error(msg);
+ }
+ }
+ }];
+ }
+ for (var i = 0; i < options.loggers.length; i++) {
+ less.logger.addListener(options.loggers[i]);
+ }
+};
+
+},{}],10:[function(require,module,exports){
+module.exports = {
+ extractId: function(href) {
+ return href.replace(/^[a-z-]+:\/+?[^\/]+/, '') // Remove protocol & domain
+ .replace(/[\?\&]livereload=\w+/, '') // Remove LiveReload cachebuster
+ .replace(/^\//, '') // Remove root /
+ .replace(/\.[a-zA-Z]+$/, '') // Remove simple extension
+ .replace(/[^\.\w-]+/g, '-') // Replace illegal characters
+ .replace(/\./g, ':'); // Replace dots with colons(for valid id)
+ },
+ addDataAttr: function(options, tag) {
+ for (var opt in tag.dataset) {
+ if (tag.dataset.hasOwnProperty(opt)) {
+ if (opt === "env" || opt === "dumpLineNumbers" || opt === "rootpath" || opt === "errorReporting") {
+ options[opt] = tag.dataset[opt];
+ } else {
+ try {
+ options[opt] = JSON.parse(tag.dataset[opt]);
+ }
+ catch(_) {}
+ }
+ }
+ }
+ }
+};
+
+},{}],11:[function(require,module,exports){
+var contexts = {};
+module.exports = contexts;
+
+var copyFromOriginal = function copyFromOriginal(original, destination, propertiesToCopy) {
+ if (!original) { return; }
+
+ for (var i = 0; i < propertiesToCopy.length; i++) {
+ if (original.hasOwnProperty(propertiesToCopy[i])) {
+ destination[propertiesToCopy[i]] = original[propertiesToCopy[i]];
+ }
+ }
+};
+
+/*
+ parse is used whilst parsing
+ */
+var parseCopyProperties = [
+ // options
+ 'paths', // option - unmodified - paths to search for imports on
+ 'relativeUrls', // option - whether to adjust URL's to be relative
+ 'rootpath', // option - rootpath to append to URL's
+ 'strictImports', // option -
+ 'insecure', // option - whether to allow imports from insecure ssl hosts
+ 'dumpLineNumbers', // option - whether to dump line numbers
+ 'compress', // option - whether to compress
+ 'syncImport', // option - whether to import synchronously
+ 'chunkInput', // option - whether to chunk input. more performant but causes parse issues.
+ 'mime', // browser only - mime type for sheet import
+ 'useFileCache', // browser only - whether to use the per file session cache
+ // context
+ 'processImports', // option & context - whether to process imports. if false then imports will not be imported.
+ // Used by the import manager to stop multiple import visitors being created.
+ 'pluginManager' // Used as the plugin manager for the session
+];
+
+contexts.Parse = function(options) {
+ copyFromOriginal(options, this, parseCopyProperties);
+
+ if (typeof this.paths === "string") { this.paths = [this.paths]; }
+};
+
+var evalCopyProperties = [
+ 'paths', // additional include paths
+ 'compress', // whether to compress
+ 'ieCompat', // whether to enforce IE compatibility (IE8 data-uri)
+ 'strictMath', // whether math has to be within parenthesis
+ 'strictUnits', // whether units need to evaluate correctly
+ 'sourceMap', // whether to output a source map
+ 'importMultiple', // whether we are currently importing multiple copies
+ 'urlArgs', // whether to add args into url tokens
+ 'javascriptEnabled',// option - whether JavaScript is enabled. if undefined, defaults to true
+ 'pluginManager', // Used as the plugin manager for the session
+ 'importantScope' // used to bubble up !important statements
+ ];
+
+contexts.Eval = function(options, frames) {
+ copyFromOriginal(options, this, evalCopyProperties);
+
+ if (typeof this.paths === "string") { this.paths = [this.paths]; }
+
+ this.frames = frames || [];
+ this.importantScope = this.importantScope || [];
+};
+
+contexts.Eval.prototype.inParenthesis = function () {
+ if (!this.parensStack) {
+ this.parensStack = [];
+ }
+ this.parensStack.push(true);
+};
+
+contexts.Eval.prototype.outOfParenthesis = function () {
+ this.parensStack.pop();
+};
+
+contexts.Eval.prototype.isMathOn = function () {
+ return this.strictMath ? (this.parensStack && this.parensStack.length) : true;
+};
+
+contexts.Eval.prototype.isPathRelative = function (path) {
+ return !/^(?:[a-z-]+:|\/|#)/i.test(path);
+};
+
+contexts.Eval.prototype.normalizePath = function( path ) {
+ var
+ segments = path.split("/").reverse(),
+ segment;
+
+ path = [];
+ while (segments.length !== 0 ) {
+ segment = segments.pop();
+ switch( segment ) {
+ case ".":
+ break;
+ case "..":
+ if ((path.length === 0) || (path[path.length - 1] === "..")) {
+ path.push( segment );
+ } else {
+ path.pop();
+ }
+ break;
+ default:
+ path.push( segment );
+ break;
+ }
+ }
+
+ return path.join("/");
+};
+
+//todo - do the same for the toCSS ?
+
+},{}],12:[function(require,module,exports){
+module.exports = {
+ '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',
+ 'rebeccapurple':'#663399',
+ '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'
+};
+},{}],13:[function(require,module,exports){
+module.exports = {
+ colors: require("./colors"),
+ unitConversions: require("./unit-conversions")
+};
+
+},{"./colors":12,"./unit-conversions":14}],14:[function(require,module,exports){
+module.exports = {
+ length: {
+ 'm': 1,
+ 'cm': 0.01,
+ 'mm': 0.001,
+ 'in': 0.0254,
+ 'px': 0.0254 / 96,
+ 'pt': 0.0254 / 72,
+ 'pc': 0.0254 / 72 * 12
+ },
+ duration: {
+ 's': 1,
+ 'ms': 0.001
+ },
+ angle: {
+ 'rad': 1 / (2 * Math.PI),
+ 'deg': 1 / 360,
+ 'grad': 1 / 400,
+ 'turn': 1
+ }
+};
+},{}],15:[function(require,module,exports){
+var abstractFileManager = function() {
+};
+
+abstractFileManager.prototype.getPath = function (filename) {
+ var j = filename.lastIndexOf('?');
+ if (j > 0) {
+ filename = filename.slice(0, j);
+ }
+ j = filename.lastIndexOf('/');
+ if (j < 0) {
+ j = filename.lastIndexOf('\\');
+ }
+ if (j < 0) {
+ return "";
+ }
+ return filename.slice(0, j + 1);
+};
+
+abstractFileManager.prototype.tryAppendExtension = function(path, ext) {
+ return /(\.[a-z]*$)|([\?;].*)$/.test(path) ? path : path + ext;
+};
+
+abstractFileManager.prototype.tryAppendLessExtension = function(path) {
+ return this.tryAppendExtension(path, '.less');
+};
+
+abstractFileManager.prototype.supportsSync = function() {
+ return false;
+};
+
+abstractFileManager.prototype.alwaysMakePathsAbsolute = function() {
+ return false;
+};
+
+abstractFileManager.prototype.isPathAbsolute = function(filename) {
+ return (/^(?:[a-z-]+:|\/|\\|#)/i).test(filename);
+};
+
+abstractFileManager.prototype.join = function(basePath, laterPath) {
+ if (!basePath) {
+ return laterPath;
+ }
+ return basePath + laterPath;
+};
+abstractFileManager.prototype.pathDiff = function pathDiff(url, baseUrl) {
+ // diff between two paths to create a relative path
+
+ var urlParts = this.extractUrlParts(url),
+ baseUrlParts = this.extractUrlParts(baseUrl),
+ i, max, urlDirectories, baseUrlDirectories, diff = "";
+ if (urlParts.hostPart !== baseUrlParts.hostPart) {
+ return "";
+ }
+ max = Math.max(baseUrlParts.directories.length, urlParts.directories.length);
+ for (i = 0; i < max; i++) {
+ if (baseUrlParts.directories[i] !== urlParts.directories[i]) { break; }
+ }
+ baseUrlDirectories = baseUrlParts.directories.slice(i);
+ urlDirectories = urlParts.directories.slice(i);
+ for (i = 0; i < baseUrlDirectories.length - 1; i++) {
+ diff += "../";
+ }
+ for (i = 0; i < urlDirectories.length - 1; i++) {
+ diff += urlDirectories[i] + "/";
+ }
+ return diff;
+};
+// helper function, not part of API
+abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, baseUrl) {
+ // urlParts[1] = protocol://hostname/ OR /
+ // urlParts[2] = / if path relative to host base
+ // urlParts[3] = directories
+ // urlParts[4] = filename
+ // urlParts[5] = parameters
+
+ var urlPartsRegex = /^((?:[a-z-]+:)?\/{2}(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i,
+ urlParts = url.match(urlPartsRegex),
+ returner = {}, directories = [], i, baseUrlParts;
+
+ if (!urlParts) {
+ throw new Error("Could not parse sheet href - '" + url + "'");
+ }
+
+ // Stylesheets in IE don't always return the full path
+ if (baseUrl && (!urlParts[1] || urlParts[2])) {
+ baseUrlParts = baseUrl.match(urlPartsRegex);
+ if (!baseUrlParts) {
+ throw new Error("Could not parse page url - '" + baseUrl + "'");
+ }
+ urlParts[1] = urlParts[1] || baseUrlParts[1] || "";
+ if (!urlParts[2]) {
+ urlParts[3] = baseUrlParts[3] + urlParts[3];
+ }
+ }
+
+ if (urlParts[3]) {
+ directories = urlParts[3].replace(/\\/g, "/").split("/");
+
+ // extract out . before .. so .. doesn't absorb a non-directory
+ for (i = 0; i < directories.length; i++) {
+ if (directories[i] === ".") {
+ directories.splice(i, 1);
+ i -= 1;
+ }
+ }
+
+ for (i = 0; i < directories.length; i++) {
+ if (directories[i] === ".." && i > 0) {
+ directories.splice(i - 1, 2);
+ i -= 2;
+ }
+ }
+ }
+
+ returner.hostPart = urlParts[1];
+ returner.directories = directories;
+ returner.path = (urlParts[1] || "") + directories.join("/");
+ returner.fileUrl = returner.path + (urlParts[4] || "");
+ returner.url = returner.fileUrl + (urlParts[5] || "");
+ return returner;
+};
+
+module.exports = abstractFileManager;
+
+},{}],16:[function(require,module,exports){
+var logger = require("../logger");
+var environment = function(externalEnvironment, fileManagers) {
+ this.fileManagers = fileManagers || [];
+ externalEnvironment = externalEnvironment || {};
+
+ var optionalFunctions = ["encodeBase64", "mimeLookup", "charsetLookup", "getSourceMapGenerator"],
+ requiredFunctions = [],
+ functions = requiredFunctions.concat(optionalFunctions);
+
+ for (var i = 0; i < functions.length; i++) {
+ var propName = functions[i],
+ environmentFunc = externalEnvironment[propName];
+ if (environmentFunc) {
+ this[propName] = environmentFunc.bind(externalEnvironment);
+ } else if (i < requiredFunctions.length) {
+ this.warn("missing required function in environment - " + propName);
+ }
+ }
+};
+
+environment.prototype.getFileManager = function (filename, currentDirectory, options, environment, isSync) {
+
+ if (!filename) {
+ logger.warn("getFileManager called with no filename.. Please report this issue. continuing.");
+ }
+ if (currentDirectory == null) {
+ logger.warn("getFileManager called with null directory.. Please report this issue. continuing.");
+ }
+
+ var fileManagers = this.fileManagers;
+ if (options.pluginManager) {
+ fileManagers = [].concat(fileManagers).concat(options.pluginManager.getFileManagers());
+ }
+ for (var i = fileManagers.length - 1; i >= 0 ; i--) {
+ var fileManager = fileManagers[i];
+ if (fileManager[isSync ? "supportsSync" : "supports"](filename, currentDirectory, options, environment)) {
+ return fileManager;
+ }
+ }
+ return null;
+};
+
+environment.prototype.addFileManager = function (fileManager) {
+ this.fileManagers.push(fileManager);
+};
+
+environment.prototype.clearFileManagers = function () {
+ this.fileManagers = [];
+};
+
+module.exports = environment;
+
+},{"../logger":33}],17:[function(require,module,exports){
+var Color = require("../tree/color"),
+ functionRegistry = require("./function-registry");
+
+// Color Blending
+// ref: http://www.w3.org/TR/compositing-1
+
+function colorBlend(mode, color1, color2) {
+ var ab = color1.alpha, cb, // backdrop
+ as = color2.alpha, cs, // source
+ ar, cr, r = []; // result
+
+ ar = as + ab * (1 - as);
+ for (var i = 0; i < 3; i++) {
+ cb = color1.rgb[i] / 255;
+ cs = color2.rgb[i] / 255;
+ cr = mode(cb, cs);
+ if (ar) {
+ cr = (as * cs + ab * (cb -
+ as * (cb + cs - cr))) / ar;
+ }
+ r[i] = cr * 255;
+ }
+
+ return new Color(r, ar);
+}
+
+var colorBlendModeFunctions = {
+ multiply: function(cb, cs) {
+ return cb * cs;
+ },
+ screen: function(cb, cs) {
+ return cb + cs - cb * cs;
+ },
+ overlay: function(cb, cs) {
+ cb *= 2;
+ return (cb <= 1) ?
+ colorBlendModeFunctions.multiply(cb, cs) :
+ colorBlendModeFunctions.screen(cb - 1, cs);
+ },
+ softlight: function(cb, cs) {
+ var d = 1, e = cb;
+ if (cs > 0.5) {
+ e = 1;
+ d = (cb > 0.25) ? Math.sqrt(cb)
+ : ((16 * cb - 12) * cb + 4) * cb;
+ }
+ return cb - (1 - 2 * cs) * e * (d - cb);
+ },
+ hardlight: function(cb, cs) {
+ return colorBlendModeFunctions.overlay(cs, cb);
+ },
+ difference: function(cb, cs) {
+ return Math.abs(cb - cs);
+ },
+ exclusion: function(cb, cs) {
+ return cb + cs - 2 * cb * cs;
+ },
+
+ // non-w3c functions:
+ average: function(cb, cs) {
+ return (cb + cs) / 2;
+ },
+ negation: function(cb, cs) {
+ return 1 - Math.abs(cb + cs - 1);
+ }
+};
+
+for (var f in colorBlendModeFunctions) {
+ if (colorBlendModeFunctions.hasOwnProperty(f)) {
+ colorBlend[f] = colorBlend.bind(null, colorBlendModeFunctions[f]);
+ }
+}
+
+functionRegistry.addMultiple(colorBlend);
+
+},{"../tree/color":50,"./function-registry":22}],18:[function(require,module,exports){
+var Dimension = require("../tree/dimension"),
+ Color = require("../tree/color"),
+ Quoted = require("../tree/quoted"),
+ Anonymous = require("../tree/anonymous"),
+ functionRegistry = require("./function-registry"),
+ colorFunctions;
+
+function clamp(val) {
+ return Math.min(1, Math.max(0, val));
+}
+function hsla(color) {
+ return colorFunctions.hsla(color.h, color.s, color.l, color.a);
+}
+function number(n) {
+ if (n instanceof Dimension) {
+ return parseFloat(n.unit.is('%') ? n.value / 100 : n.value);
+ } else if (typeof n === 'number') {
+ return n;
+ } else {
+ throw {
+ type: "Argument",
+ message: "color functions take numbers as parameters"
+ };
+ }
+}
+function scaled(n, size) {
+ if (n instanceof Dimension && n.unit.is('%')) {
+ return parseFloat(n.value * size / 100);
+ } else {
+ return number(n);
+ }
+}
+colorFunctions = {
+ rgb: function (r, g, b) {
+ return colorFunctions.rgba(r, g, b, 1.0);
+ },
+ rgba: function (r, g, b, a) {
+ var rgb = [r, g, b].map(function (c) { return scaled(c, 255); });
+ a = number(a);
+ return new Color(rgb, a);
+ },
+ hsl: function (h, s, l) {
+ return colorFunctions.hsla(h, s, l, 1.0);
+ },
+ hsla: function (h, s, l, a) {
+
+ var m1, m2;
+
+ function hue(h) {
+ h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h);
+ if (h * 6 < 1) {
+ return m1 + (m2 - m1) * h * 6;
+ }
+ else if (h * 2 < 1) {
+ return m2;
+ }
+ else if (h * 3 < 2) {
+ return m1 + (m2 - m1) * (2 / 3 - h) * 6;
+ }
+ else {
+ return m1;
+ }
+ }
+
+ h = (number(h) % 360) / 360;
+ s = clamp(number(s)); l = clamp(number(l)); a = clamp(number(a));
+
+ m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
+ m1 = l * 2 - m2;
+
+ return colorFunctions.rgba(hue(h + 1 / 3) * 255,
+ hue(h) * 255,
+ hue(h - 1 / 3) * 255,
+ a);
+ },
+
+ hsv: function(h, s, v) {
+ return colorFunctions.hsva(h, s, v, 1.0);
+ },
+
+ hsva: function(h, s, v, a) {
+ h = ((number(h) % 360) / 360) * 360;
+ s = number(s); v = number(v); a = number(a);
+
+ var i, f;
+ i = Math.floor((h / 60) % 6);
+ f = (h / 60) - i;
+
+ var vs = [v,
+ v * (1 - s),
+ v * (1 - f * s),
+ v * (1 - (1 - f) * s)];
+ var perm = [[0, 3, 1],
+ [2, 0, 1],
+ [1, 0, 3],
+ [1, 2, 0],
+ [3, 1, 0],
+ [0, 1, 2]];
+
+ return colorFunctions.rgba(vs[perm[i][0]] * 255,
+ vs[perm[i][1]] * 255,
+ vs[perm[i][2]] * 255,
+ a);
+ },
+
+ hue: function (color) {
+ return new Dimension(color.toHSL().h);
+ },
+ saturation: function (color) {
+ return new Dimension(color.toHSL().s * 100, '%');
+ },
+ lightness: function (color) {
+ return new Dimension(color.toHSL().l * 100, '%');
+ },
+ hsvhue: function(color) {
+ return new Dimension(color.toHSV().h);
+ },
+ hsvsaturation: function (color) {
+ return new Dimension(color.toHSV().s * 100, '%');
+ },
+ hsvvalue: function (color) {
+ return new Dimension(color.toHSV().v * 100, '%');
+ },
+ red: function (color) {
+ return new Dimension(color.rgb[0]);
+ },
+ green: function (color) {
+ return new Dimension(color.rgb[1]);
+ },
+ blue: function (color) {
+ return new Dimension(color.rgb[2]);
+ },
+ alpha: function (color) {
+ return new Dimension(color.toHSL().a);
+ },
+ luma: function (color) {
+ return new Dimension(color.luma() * color.alpha * 100, '%');
+ },
+ luminance: function (color) {
+ var luminance =
+ (0.2126 * color.rgb[0] / 255) +
+ (0.7152 * color.rgb[1] / 255) +
+ (0.0722 * color.rgb[2] / 255);
+
+ return new Dimension(luminance * color.alpha * 100, '%');
+ },
+ saturate: function (color, amount, method) {
+ // filter: saturate(3.2);
+ // should be kept as is, so check for color
+ if (!color.rgb) {
+ return null;
+ }
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.s += hsl.s * amount.value / 100;
+ }
+ else {
+ hsl.s += amount.value / 100;
+ }
+ hsl.s = clamp(hsl.s);
+ return hsla(hsl);
+ },
+ desaturate: function (color, amount, method) {
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.s -= hsl.s * amount.value / 100;
+ }
+ else {
+ hsl.s -= amount.value / 100;
+ }
+ hsl.s = clamp(hsl.s);
+ return hsla(hsl);
+ },
+ lighten: function (color, amount, method) {
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.l += hsl.l * amount.value / 100;
+ }
+ else {
+ hsl.l += amount.value / 100;
+ }
+ hsl.l = clamp(hsl.l);
+ return hsla(hsl);
+ },
+ darken: function (color, amount, method) {
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.l -= hsl.l * amount.value / 100;
+ }
+ else {
+ hsl.l -= amount.value / 100;
+ }
+ hsl.l = clamp(hsl.l);
+ return hsla(hsl);
+ },
+ fadein: function (color, amount, method) {
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.a += hsl.a * amount.value / 100;
+ }
+ else {
+ hsl.a += amount.value / 100;
+ }
+ hsl.a = clamp(hsl.a);
+ return hsla(hsl);
+ },
+ fadeout: function (color, amount, method) {
+ var hsl = color.toHSL();
+
+ if (typeof method !== "undefined" && method.value === "relative") {
+ hsl.a -= hsl.a * amount.value / 100;
+ }
+ else {
+ 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, Natalie Weizenbaum, and Chris Eppstein
+ // http://sass-lang.com
+ //
+ mix: function (color1, color2, weight) {
+ if (!color1.toHSL || !color2.toHSL) {
+ console.log(color2.type);
+ console.dir(color2);
+ }
+ if (!weight) {
+ weight = new Dimension(50);
+ }
+ var p = weight.value / 100.0;
+ var w = p * 2 - 1;
+ var a = color1.toHSL().a - color2.toHSL().a;
+
+ var w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
+ var w2 = 1 - w1;
+
+ var rgb = [color1.rgb[0] * w1 + color2.rgb[0] * w2,
+ color1.rgb[1] * w1 + color2.rgb[1] * w2,
+ color1.rgb[2] * w1 + color2.rgb[2] * w2];
+
+ var alpha = color1.alpha * p + color2.alpha * (1 - p);
+
+ return new Color(rgb, alpha);
+ },
+ greyscale: function (color) {
+ return colorFunctions.desaturate(color, new Dimension(100));
+ },
+ contrast: function (color, dark, light, threshold) {
+ // filter: contrast(3.2);
+ // should be kept as is, so check for color
+ if (!color.rgb) {
+ return null;
+ }
+ if (typeof light === 'undefined') {
+ light = colorFunctions.rgba(255, 255, 255, 1.0);
+ }
+ if (typeof dark === 'undefined') {
+ dark = colorFunctions.rgba(0, 0, 0, 1.0);
+ }
+ //Figure out which is actually light and dark!
+ if (dark.luma() > light.luma()) {
+ var t = light;
+ light = dark;
+ dark = t;
+ }
+ if (typeof threshold === 'undefined') {
+ threshold = 0.43;
+ } else {
+ threshold = number(threshold);
+ }
+ if (color.luma() < threshold) {
+ return light;
+ } else {
+ return dark;
+ }
+ },
+ argb: function (color) {
+ return new Anonymous(color.toARGB());
+ },
+ color: function(c) {
+ if ((c instanceof Quoted) &&
+ (/^#([a-f0-9]{6}|[a-f0-9]{3})$/i.test(c.value))) {
+ return new Color(c.value.slice(1));
+ }
+ if ((c instanceof Color) || (c = Color.fromKeyword(c.value))) {
+ c.value = undefined;
+ return c;
+ }
+ throw {
+ type: "Argument",
+ message: "argument must be a color keyword or 3/6 digit hex e.g. #FFF"
+ };
+ },
+ tint: function(color, amount) {
+ return colorFunctions.mix(colorFunctions.rgb(255, 255, 255), color, amount);
+ },
+ shade: function(color, amount) {
+ return colorFunctions.mix(colorFunctions.rgb(0, 0, 0), color, amount);
+ }
+};
+functionRegistry.addMultiple(colorFunctions);
+
+},{"../tree/anonymous":46,"../tree/color":50,"../tree/dimension":56,"../tree/quoted":73,"./function-registry":22}],19:[function(require,module,exports){
+module.exports = function(environment) {
+ var Quoted = require("../tree/quoted"),
+ URL = require("../tree/url"),
+ functionRegistry = require("./function-registry"),
+ fallback = function(functionThis, node) {
+ return new URL(node, functionThis.index, functionThis.currentFileInfo).eval(functionThis.context);
+ },
+ logger = require('../logger');
+
+ functionRegistry.add("data-uri", function(mimetypeNode, filePathNode) {
+
+ if (!filePathNode) {
+ filePathNode = mimetypeNode;
+ mimetypeNode = null;
+ }
+
+ var mimetype = mimetypeNode && mimetypeNode.value;
+ var filePath = filePathNode.value;
+ var currentFileInfo = this.currentFileInfo;
+ var currentDirectory = currentFileInfo.relativeUrls ?
+ currentFileInfo.currentDirectory : currentFileInfo.entryPath;
+
+ var fragmentStart = filePath.indexOf('#');
+ var fragment = '';
+ if (fragmentStart !== -1) {
+ fragment = filePath.slice(fragmentStart);
+ filePath = filePath.slice(0, fragmentStart);
+ }
+
+ var fileManager = environment.getFileManager(filePath, currentDirectory, this.context, environment, true);
+
+ if (!fileManager) {
+ return fallback(this, filePathNode);
+ }
+
+ var useBase64 = false;
+
+ // detect the mimetype if not given
+ if (!mimetypeNode) {
+
+ mimetype = environment.mimeLookup(filePath);
+
+ if (mimetype === "image/svg+xml") {
+ useBase64 = false;
+ } else {
+ // use base 64 unless it's an ASCII or UTF-8 format
+ var charset = environment.charsetLookup(mimetype);
+ useBase64 = ['US-ASCII', 'UTF-8'].indexOf(charset) < 0;
+ }
+ if (useBase64) { mimetype += ';base64'; }
+ }
+ else {
+ useBase64 = /;base64$/.test(mimetype);
+ }
+
+ var fileSync = fileManager.loadFileSync(filePath, currentDirectory, this.context, environment);
+ if (!fileSync.contents) {
+ logger.warn("Skipped data-uri embedding of " + filePath + " because file not found");
+ return fallback(this, filePathNode || mimetypeNode);
+ }
+ var buf = fileSync.contents;
+ if (useBase64 && !environment.encodeBase64) {
+ return fallback(this, filePathNode);
+ }
+
+ buf = useBase64 ? environment.encodeBase64(buf) : encodeURIComponent(buf);
+
+ var uri = "data:" + mimetype + ',' + buf + fragment;
+
+ // IE8 cannot handle a data-uri larger than 32,768 characters. If this is exceeded
+ // and the --ieCompat flag is enabled, return a normal url() instead.
+ var DATA_URI_MAX = 32768;
+ if (uri.length >= DATA_URI_MAX) {
+
+ if (this.context.ieCompat !== false) {
+ logger.warn("Skipped data-uri embedding of " + filePath + " because its size (" + uri.length +
+ " characters) exceeds IE8-safe " + DATA_URI_MAX + " characters!");
+
+ return fallback(this, filePathNode || mimetypeNode);
+ }
+ }
+
+ return new URL(new Quoted('"' + uri + '"', uri, false, this.index, this.currentFileInfo), this.index, this.currentFileInfo);
+ });
+};
+
+},{"../logger":33,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],20:[function(require,module,exports){
+var Keyword = require("../tree/keyword"),
+ functionRegistry = require("./function-registry");
+
+var defaultFunc = {
+ eval: function () {
+ var v = this.value_, e = this.error_;
+ if (e) {
+ throw e;
+ }
+ if (v != null) {
+ return v ? Keyword.True : Keyword.False;
+ }
+ },
+ value: function (v) {
+ this.value_ = v;
+ },
+ error: function (e) {
+ this.error_ = e;
+ },
+ reset: function () {
+ this.value_ = this.error_ = null;
+ }
+};
+
+functionRegistry.add("default", defaultFunc.eval.bind(defaultFunc));
+
+module.exports = defaultFunc;
+
+},{"../tree/keyword":65,"./function-registry":22}],21:[function(require,module,exports){
+var Expression = require("../tree/expression");
+
+var functionCaller = function(name, context, index, currentFileInfo) {
+ this.name = name.toLowerCase();
+ this.index = index;
+ this.context = context;
+ this.currentFileInfo = currentFileInfo;
+
+ this.func = context.frames[0].functionRegistry.get(this.name);
+};
+functionCaller.prototype.isValid = function() {
+ return Boolean(this.func);
+};
+functionCaller.prototype.call = function(args) {
+
+ // This code is terrible and should be replaced as per this issue...
+ // https://github.com/less/less.js/issues/2477
+ if (Array.isArray(args)) {
+ args = args.filter(function (item) {
+ if (item.type === "Comment") {
+ return false;
+ }
+ return true;
+ })
+ .map(function(item) {
+ if (item.type === "Expression") {
+ var subNodes = item.value.filter(function (item) {
+ if (item.type === "Comment") {
+ return false;
+ }
+ return true;
+ });
+ if (subNodes.length === 1) {
+ return subNodes[0];
+ } else {
+ return new Expression(subNodes);
+ }
+ }
+ return item;
+ });
+ }
+
+ return this.func.apply(this, args);
+};
+
+module.exports = functionCaller;
+
+},{"../tree/expression":59}],22:[function(require,module,exports){
+function makeRegistry( base ) {
+ return {
+ _data: {},
+ add: function(name, func) {
+ // precautionary case conversion, as later querying of
+ // the registry by function-caller uses lower case as well.
+ name = name.toLowerCase();
+
+ if (this._data.hasOwnProperty(name)) {
+ //TODO warn
+ }
+ this._data[name] = func;
+ },
+ addMultiple: function(functions) {
+ Object.keys(functions).forEach(
+ function(name) {
+ this.add(name, functions[name]);
+ }.bind(this));
+ },
+ get: function(name) {
+ return this._data[name] || ( base && base.get( name ));
+ },
+ inherit : function() {
+ return makeRegistry( this );
+ }
+ };
+}
+
+module.exports = makeRegistry( null );
+},{}],23:[function(require,module,exports){
+module.exports = function(environment) {
+ var functions = {
+ functionRegistry: require("./function-registry"),
+ functionCaller: require("./function-caller")
+ };
+
+ //register functions
+ require("./default");
+ require("./color");
+ require("./color-blending");
+ require("./data-uri")(environment);
+ require("./math");
+ require("./number");
+ require("./string");
+ require("./svg")(environment);
+ require("./types");
+
+ return functions;
+};
+
+},{"./color":18,"./color-blending":17,"./data-uri":19,"./default":20,"./function-caller":21,"./function-registry":22,"./math":25,"./number":26,"./string":27,"./svg":28,"./types":29}],24:[function(require,module,exports){
+var Dimension = require("../tree/dimension");
+
+var MathHelper = function() {
+};
+MathHelper._math = function (fn, unit, n) {
+ if (!(n instanceof Dimension)) {
+ throw { type: "Argument", message: "argument must be a number" };
+ }
+ if (unit == null) {
+ unit = n.unit;
+ } else {
+ n = n.unify();
+ }
+ return new Dimension(fn(parseFloat(n.value)), unit);
+};
+module.exports = MathHelper;
+},{"../tree/dimension":56}],25:[function(require,module,exports){
+var functionRegistry = require("./function-registry"),
+ mathHelper = require("./math-helper.js");
+
+var mathFunctions = {
+ // name, unit
+ ceil: null,
+ floor: null,
+ sqrt: null,
+ abs: null,
+ tan: "",
+ sin: "",
+ cos: "",
+ atan: "rad",
+ asin: "rad",
+ acos: "rad"
+};
+
+for (var f in mathFunctions) {
+ if (mathFunctions.hasOwnProperty(f)) {
+ mathFunctions[f] = mathHelper._math.bind(null, Math[f], mathFunctions[f]);
+ }
+}
+
+mathFunctions.round = function (n, f) {
+ var fraction = typeof f === "undefined" ? 0 : f.value;
+ return mathHelper._math(function(num) { return num.toFixed(fraction); }, null, n);
+};
+
+functionRegistry.addMultiple(mathFunctions);
+
+},{"./function-registry":22,"./math-helper.js":24}],26:[function(require,module,exports){
+var Dimension = require("../tree/dimension"),
+ Anonymous = require("../tree/anonymous"),
+ functionRegistry = require("./function-registry"),
+ mathHelper = require("./math-helper.js");
+
+var minMax = function (isMin, args) {
+ args = Array.prototype.slice.call(args);
+ switch(args.length) {
+ case 0: throw { type: "Argument", message: "one or more arguments required" };
+ }
+ var i, j, current, currentUnified, referenceUnified, unit, unitStatic, unitClone,
+ order = [], // elems only contains original argument values.
+ values = {}; // key is the unit.toString() for unified Dimension values,
+ // value is the index into the order array.
+ for (i = 0; i < args.length; i++) {
+ current = args[i];
+ if (!(current instanceof Dimension)) {
+ if (Array.isArray(args[i].value)) {
+ Array.prototype.push.apply(args, Array.prototype.slice.call(args[i].value));
+ }
+ continue;
+ }
+ currentUnified = current.unit.toString() === "" && unitClone !== undefined ? new Dimension(current.value, unitClone).unify() : current.unify();
+ unit = currentUnified.unit.toString() === "" && unitStatic !== undefined ? unitStatic : currentUnified.unit.toString();
+ unitStatic = unit !== "" && unitStatic === undefined || unit !== "" && order[0].unify().unit.toString() === "" ? unit : unitStatic;
+ unitClone = unit !== "" && unitClone === undefined ? current.unit.toString() : unitClone;
+ j = values[""] !== undefined && unit !== "" && unit === unitStatic ? values[""] : values[unit];
+ if (j === undefined) {
+ if (unitStatic !== undefined && unit !== unitStatic) {
+ throw{ type: "Argument", message: "incompatible types" };
+ }
+ values[unit] = order.length;
+ order.push(current);
+ continue;
+ }
+ referenceUnified = order[j].unit.toString() === "" && unitClone !== undefined ? new Dimension(order[j].value, unitClone).unify() : order[j].unify();
+ if ( isMin && currentUnified.value < referenceUnified.value ||
+ !isMin && currentUnified.value > referenceUnified.value) {
+ order[j] = current;
+ }
+ }
+ if (order.length == 1) {
+ return order[0];
+ }
+ args = order.map(function (a) { return a.toCSS(this.context); }).join(this.context.compress ? "," : ", ");
+ return new Anonymous((isMin ? "min" : "max") + "(" + args + ")");
+};
+functionRegistry.addMultiple({
+ min: function () {
+ return minMax(true, arguments);
+ },
+ max: function () {
+ return minMax(false, arguments);
+ },
+ convert: function (val, unit) {
+ return val.convertTo(unit.value);
+ },
+ pi: function () {
+ return new Dimension(Math.PI);
+ },
+ mod: function(a, b) {
+ return new Dimension(a.value % b.value, a.unit);
+ },
+ pow: function(x, y) {
+ if (typeof x === "number" && typeof y === "number") {
+ x = new Dimension(x);
+ y = new Dimension(y);
+ } else if (!(x instanceof Dimension) || !(y instanceof Dimension)) {
+ throw { type: "Argument", message: "arguments must be numbers" };
+ }
+
+ return new Dimension(Math.pow(x.value, y.value), x.unit);
+ },
+ percentage: function (n) {
+ var result = mathHelper._math(function(num) {
+ return num * 100;
+ }, '%', n);
+
+ return result;
+ }
+});
+
+},{"../tree/anonymous":46,"../tree/dimension":56,"./function-registry":22,"./math-helper.js":24}],27:[function(require,module,exports){
+var Quoted = require("../tree/quoted"),
+ Anonymous = require("../tree/anonymous"),
+ JavaScript = require("../tree/javascript"),
+ functionRegistry = require("./function-registry");
+
+functionRegistry.addMultiple({
+ e: function (str) {
+ return new Anonymous(str instanceof JavaScript ? str.evaluated : str.value);
+ },
+ escape: function (str) {
+ return new Anonymous(
+ encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B")
+ .replace(/\(/g, "%28").replace(/\)/g, "%29"));
+ },
+ replace: function (string, pattern, replacement, flags) {
+ var result = string.value;
+ replacement = (replacement.type === "Quoted") ?
+ replacement.value : replacement.toCSS();
+ result = result.replace(new RegExp(pattern.value, flags ? flags.value : ''), replacement);
+ return new Quoted(string.quote || '', result, string.escaped);
+ },
+ '%': function (string /* arg, arg, ...*/) {
+ var args = Array.prototype.slice.call(arguments, 1),
+ result = string.value;
+
+ for (var i = 0; i < args.length; i++) {
+ /*jshint loopfunc:true */
+ result = result.replace(/%[sda]/i, function(token) {
+ var value = ((args[i].type === "Quoted") &&
+ token.match(/s/i)) ? args[i].value : args[i].toCSS();
+ return token.match(/[A-Z]$/) ? encodeURIComponent(value) : value;
+ });
+ }
+ result = result.replace(/%%/g, '%');
+ return new Quoted(string.quote || '', result, string.escaped);
+ }
+});
+
+},{"../tree/anonymous":46,"../tree/javascript":63,"../tree/quoted":73,"./function-registry":22}],28:[function(require,module,exports){
+module.exports = function(environment) {
+ var Dimension = require("../tree/dimension"),
+ Color = require("../tree/color"),
+ Expression = require("../tree/expression"),
+ Quoted = require("../tree/quoted"),
+ URL = require("../tree/url"),
+ functionRegistry = require("./function-registry");
+
+ functionRegistry.add("svg-gradient", function(direction) {
+
+ var stops,
+ gradientDirectionSvg,
+ gradientType = "linear",
+ rectangleDimension = 'x="0" y="0" width="1" height="1"',
+ renderEnv = {compress: false},
+ returner,
+ directionValue = direction.toCSS(renderEnv),
+ i, color, position, positionValue, alpha;
+
+ function throwArgumentDescriptor() {
+ throw { type: "Argument",
+ message: "svg-gradient expects direction, start_color [start_position], [color position,]...," +
+ " end_color [end_position] or direction, color list" };
+ }
+
+ if (arguments.length == 2) {
+ if (arguments[1].value.length < 2) {
+ throwArgumentDescriptor();
+ }
+ stops = arguments[1].value;
+ } else if (arguments.length < 3) {
+ throwArgumentDescriptor();
+ } else {
+ stops = Array.prototype.slice.call(arguments, 1);
+ }
+
+ switch (directionValue) {
+ case "to bottom":
+ gradientDirectionSvg = 'x1="0%" y1="0%" x2="0%" y2="100%"';
+ break;
+ case "to right":
+ gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="0%"';
+ break;
+ case "to bottom right":
+ gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="100%"';
+ break;
+ case "to top right":
+ gradientDirectionSvg = 'x1="0%" y1="100%" x2="100%" y2="0%"';
+ break;
+ case "ellipse":
+ case "ellipse at center":
+ gradientType = "radial";
+ gradientDirectionSvg = 'cx="50%" cy="50%" r="75%"';
+ rectangleDimension = 'x="-50" y="-50" width="101" height="101"';
+ break;
+ default:
+ throw { type: "Argument", message: "svg-gradient direction must be 'to bottom', 'to right'," +
+ " 'to bottom right', 'to top right' or 'ellipse at center'" };
+ }
+ returner = '<?xml version="1.0" ?>' +
+ '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none">' +
+ '<' + gradientType + 'Gradient id="gradient" gradientUnits="userSpaceOnUse" ' + gradientDirectionSvg + '>';
+
+ for (i = 0; i < stops.length; i+= 1) {
+ if (stops[i] instanceof Expression) {
+ color = stops[i].value[0];
+ position = stops[i].value[1];
+ } else {
+ color = stops[i];
+ position = undefined;
+ }
+
+ if (!(color instanceof Color) || (!((i === 0 || i + 1 === stops.length) && position === undefined) && !(position instanceof Dimension))) {
+ throwArgumentDescriptor();
+ }
+ positionValue = position ? position.toCSS(renderEnv) : i === 0 ? "0%" : "100%";
+ alpha = color.alpha;
+ returner += '<stop offset="' + positionValue + '" stop-color="' + color.toRGB() + '"' + (alpha < 1 ? ' stop-opacity="' + alpha + '"' : '') + '/>';
+ }
+ returner += '</' + gradientType + 'Gradient>' +
+ '<rect ' + rectangleDimension + ' fill="url(#gradient)" /></svg>';
+
+ returner = encodeURIComponent(returner);
+
+ returner = "data:image/svg+xml," + returner;
+ return new URL(new Quoted("'" + returner + "'", returner, false, this.index, this.currentFileInfo), this.index, this.currentFileInfo);
+ });
+};
+
+},{"../tree/color":50,"../tree/dimension":56,"../tree/expression":59,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],29:[function(require,module,exports){
+var Keyword = require("../tree/keyword"),
+ DetachedRuleset = require("../tree/detached-ruleset"),
+ Dimension = require("../tree/dimension"),
+ Color = require("../tree/color"),
+ Quoted = require("../tree/quoted"),
+ Anonymous = require("../tree/anonymous"),
+ URL = require("../tree/url"),
+ Operation = require("../tree/operation"),
+ functionRegistry = require("./function-registry");
+
+var isa = function (n, Type) {
+ return (n instanceof Type) ? Keyword.True : Keyword.False;
+ },
+ isunit = function (n, unit) {
+ if (unit === undefined) {
+ throw { type: "Argument", message: "missing the required second argument to isunit." };
+ }
+ unit = typeof unit.value === "string" ? unit.value : unit;
+ if (typeof unit !== "string") {
+ throw { type: "Argument", message: "Second argument to isunit should be a unit or a string." };
+ }
+ return (n instanceof Dimension) && n.unit.is(unit) ? Keyword.True : Keyword.False;
+ },
+ getItemsFromNode = function(node) {
+ // handle non-array values as an array of length 1
+ // return 'undefined' if index is invalid
+ var items = Array.isArray(node.value) ?
+ node.value : Array(node);
+
+ return items;
+ };
+functionRegistry.addMultiple({
+ isruleset: function (n) {
+ return isa(n, DetachedRuleset);
+ },
+ iscolor: function (n) {
+ return isa(n, Color);
+ },
+ isnumber: function (n) {
+ return isa(n, Dimension);
+ },
+ isstring: function (n) {
+ return isa(n, Quoted);
+ },
+ iskeyword: function (n) {
+ return isa(n, Keyword);
+ },
+ isurl: function (n) {
+ return isa(n, URL);
+ },
+ ispixel: function (n) {
+ return isunit(n, 'px');
+ },
+ ispercentage: function (n) {
+ return isunit(n, '%');
+ },
+ isem: function (n) {
+ return isunit(n, 'em');
+ },
+ isunit: isunit,
+ unit: function (val, unit) {
+ if (!(val instanceof Dimension)) {
+ throw { type: "Argument",
+ message: "the first argument to unit must be a number" +
+ (val instanceof Operation ? ". Have you forgotten parenthesis?" : "") };
+ }
+ if (unit) {
+ if (unit instanceof Keyword) {
+ unit = unit.value;
+ } else {
+ unit = unit.toCSS();
+ }
+ } else {
+ unit = "";
+ }
+ return new Dimension(val.value, unit);
+ },
+ "get-unit": function (n) {
+ return new Anonymous(n.unit);
+ },
+ extract: function(values, index) {
+ index = index.value - 1; // (1-based index)
+
+ return getItemsFromNode(values)[index];
+ },
+ length: function(values) {
+ return new Dimension(getItemsFromNode(values).length);
+ }
+});
+
+},{"../tree/anonymous":46,"../tree/color":50,"../tree/detached-ruleset":55,"../tree/dimension":56,"../tree/keyword":65,"../tree/operation":71,"../tree/quoted":73,"../tree/url":80,"./function-registry":22}],30:[function(require,module,exports){
+var contexts = require("./contexts"),
+ Parser = require('./parser/parser'),
+ FunctionImporter = require('./plugins/function-importer');
+
+module.exports = function(environment) {
+
+ // FileInfo = {
+ // 'relativeUrls' - option - whether to adjust URL's to be relative
+ // 'filename' - full resolved filename of current file
+ // 'rootpath' - path to append to normal URLs for this node
+ // 'currentDirectory' - path to the current file, absolute
+ // 'rootFilename' - filename of the base file
+ // 'entryPath' - absolute path to the entry file
+ // 'reference' - whether the file should not be output and only output parts that are referenced
+
+ var ImportManager = function(context, rootFileInfo) {
+ this.rootFilename = rootFileInfo.filename;
+ this.paths = context.paths || []; // Search paths, when importing
+ this.contents = {}; // map - filename to contents of all the files
+ this.contentsIgnoredChars = {}; // map - filename to lines at the beginning of each file to ignore
+ this.mime = context.mime;
+ this.error = null;
+ this.context = context;
+ // Deprecated? Unused outside of here, could be useful.
+ this.queue = []; // Files which haven't been imported yet
+ this.files = {}; // Holds the imported parse trees.
+ };
+ /**
+ * Add an import to be imported
+ * @param path - the raw path
+ * @param tryAppendLessExtension - whether to try appending the less extension (if the path has no extension)
+ * @param currentFileInfo - the current file info (used for instance to work out relative paths)
+ * @param importOptions - import options
+ * @param callback - callback for when it is imported
+ */
+ ImportManager.prototype.push = function (path, tryAppendLessExtension, currentFileInfo, importOptions, callback) {
+ var importManager = this;
+ this.queue.push(path);
+
+ var fileParsedFunc = function (e, root, fullPath) {
+ importManager.queue.splice(importManager.queue.indexOf(path), 1); // Remove the path from the queue
+
+ var importedEqualsRoot = fullPath === importManager.rootFilename;
+ if (importOptions.optional && e) {
+ callback(null, {rules:[]}, false, null);
+ }
+ else {
+ importManager.files[fullPath] = root;
+ if (e && !importManager.error) { importManager.error = e; }
+ callback(e, root, importedEqualsRoot, fullPath);
+ }
+ };
+
+ var newFileInfo = {
+ relativeUrls: this.context.relativeUrls,
+ entryPath: currentFileInfo.entryPath,
+ rootpath: currentFileInfo.rootpath,
+ rootFilename: currentFileInfo.rootFilename
+ };
+
+ var fileManager = environment.getFileManager(path, currentFileInfo.currentDirectory, this.context, environment);
+
+ if (!fileManager) {
+ fileParsedFunc({ message: "Could not find a file-manager for " + path });
+ return;
+ }
+
+ if (tryAppendLessExtension) {
+ path = fileManager.tryAppendExtension(path, importOptions.plugin ? ".js" : ".less");
+ }
+
+ var loadFileCallback = function(loadedFile) {
+ var resolvedFilename = loadedFile.filename,
+ contents = loadedFile.contents.replace(/^\uFEFF/, '');
+
+ // Pass on an updated rootpath if path of imported file is relative and file
+ // is in a (sub|sup) directory
+ //
+ // Examples:
+ // - If path of imported file is 'module/nav/nav.less' and rootpath is 'less/',
+ // then rootpath should become 'less/module/nav/'
+ // - If path of imported file is '../mixins.less' and rootpath is 'less/',
+ // then rootpath should become 'less/../'
+ newFileInfo.currentDirectory = fileManager.getPath(resolvedFilename);
+ if (newFileInfo.relativeUrls) {
+ newFileInfo.rootpath = fileManager.join(
+ (importManager.context.rootpath || ""),
+ fileManager.pathDiff(newFileInfo.currentDirectory, newFileInfo.entryPath));
+
+ if (!fileManager.isPathAbsolute(newFileInfo.rootpath) && fileManager.alwaysMakePathsAbsolute()) {
+ newFileInfo.rootpath = fileManager.join(newFileInfo.entryPath, newFileInfo.rootpath);
+ }
+ }
+ newFileInfo.filename = resolvedFilename;
+
+ var newEnv = new contexts.Parse(importManager.context);
+
+ newEnv.processImports = false;
+ importManager.contents[resolvedFilename] = contents;
+
+ if (currentFileInfo.reference || importOptions.reference) {
+ newFileInfo.reference = true;
+ }
+
+ if (importOptions.plugin) {
+ new FunctionImporter(newEnv, newFileInfo).eval(contents, function (e, root) {
+ fileParsedFunc(e, root, resolvedFilename);
+ });
+ } else if (importOptions.inline) {
+ fileParsedFunc(null, contents, resolvedFilename);
+ } else {
+ new Parser(newEnv, importManager, newFileInfo).parse(contents, function (e, root) {
+ fileParsedFunc(e, root, resolvedFilename);
+ });
+ }
+ };
+
+ var promise = fileManager.loadFile(path, currentFileInfo.currentDirectory, this.context, environment,
+ function(err, loadedFile) {
+ if (err) {
+ fileParsedFunc(err);
+ } else {
+ loadFileCallback(loadedFile);
+ }
+ });
+ if (promise) {
+ promise.then(loadFileCallback, fileParsedFunc);
+ }
+ };
+ return ImportManager;
+};
+
+},{"./contexts":11,"./parser/parser":38,"./plugins/function-importer":40}],31:[function(require,module,exports){
+module.exports = function(environment, fileManagers) {
+ var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
+
+ var less = {
+ version: [2, 7, 3],
+ data: require('./data'),
+ tree: require('./tree'),
+ Environment: (Environment = require("./environment/environment")),
+ AbstractFileManager: require("./environment/abstract-file-manager"),
+ environment: (environment = new Environment(environment, fileManagers)),
+ visitors: require('./visitors'),
+ Parser: require('./parser/parser'),
+ functions: require('./functions')(environment),
+ contexts: require("./contexts"),
+ SourceMapOutput: (SourceMapOutput = require('./source-map-output')(environment)),
+ SourceMapBuilder: (SourceMapBuilder = require('./source-map-builder')(SourceMapOutput, environment)),
+ ParseTree: (ParseTree = require('./parse-tree')(SourceMapBuilder)),
+ ImportManager: (ImportManager = require('./import-manager')(environment)),
+ render: require("./render")(environment, ParseTree, ImportManager),
+ parse: require("./parse")(environment, ParseTree, ImportManager),
+ LessError: require('./less-error'),
+ transformTree: require('./transform-tree'),
+ utils: require('./utils'),
+ PluginManager: require('./plugin-manager'),
+ logger: require('./logger')
+ };
+
+ return less;
+};
+
+},{"./contexts":11,"./data":13,"./environment/abstract-file-manager":15,"./environment/environment":16,"./functions":23,"./import-manager":30,"./less-error":32,"./logger":33,"./parse":35,"./parse-tree":34,"./parser/parser":38,"./plugin-manager":39,"./render":41,"./source-map-builder":42,"./source-map-output":43,"./transform-tree":44,"./tree":62,"./utils":83,"./visitors":87}],32:[function(require,module,exports){
+var utils = require("./utils");
+
+var LessError = module.exports = function LessError(e, importManager, currentFilename) {
+
+ Error.call(this);
+
+ var filename = e.filename || currentFilename;
+
+ if (importManager && filename) {
+ var input = importManager.contents[filename],
+ loc = utils.getLocation(e.index, input),
+ line = loc.line,
+ col = loc.column,
+ callLine = e.call && utils.getLocation(e.call, input).line,
+ lines = input.split('\n');
+
+ this.type = e.type || 'Syntax';
+ this.filename = filename;
+ this.index = e.index;
+ this.line = typeof line === 'number' ? line + 1 : null;
+ this.callLine = callLine + 1;
+ this.callExtract = lines[callLine];
+ this.column = col;
+ this.extract = [
+ lines[line - 1],
+ lines[line],
+ lines[line + 1]
+ ];
+ }
+ this.message = e.message;
+ this.stack = e.stack;
+};
+
+if (typeof Object.create === 'undefined') {
+ var F = function () {};
+ F.prototype = Error.prototype;
+ LessError.prototype = new F();
+} else {
+ LessError.prototype = Object.create(Error.prototype);
+}
+
+LessError.prototype.constructor = LessError;
+
+},{"./utils":83}],33:[function(require,module,exports){
+module.exports = {
+ error: function(msg) {
+ this._fireEvent("error", msg);
+ },
+ warn: function(msg) {
+ this._fireEvent("warn", msg);
+ },
+ info: function(msg) {
+ this._fireEvent("info", msg);
+ },
+ debug: function(msg) {
+ this._fireEvent("debug", msg);
+ },
+ addListener: function(listener) {
+ this._listeners.push(listener);
+ },
+ removeListener: function(listener) {
+ for (var i = 0; i < this._listeners.length; i++) {
+ if (this._listeners[i] === listener) {
+ this._listeners.splice(i, 1);
+ return;
+ }
+ }
+ },
+ _fireEvent: function(type, msg) {
+ for (var i = 0; i < this._listeners.length; i++) {
+ var logFunction = this._listeners[i][type];
+ if (logFunction) {
+ logFunction(msg);
+ }
+ }
+ },
+ _listeners: []
+};
+
+},{}],34:[function(require,module,exports){
+var LessError = require('./less-error'),
+ transformTree = require("./transform-tree"),
+ logger = require("./logger");
+
+module.exports = function(SourceMapBuilder) {
+ var ParseTree = function(root, imports) {
+ this.root = root;
+ this.imports = imports;
+ };
+
+ ParseTree.prototype.toCSS = function(options) {
+ var evaldRoot, result = {}, sourceMapBuilder;
+ try {
+ evaldRoot = transformTree(this.root, options);
+ } catch (e) {
+ throw new LessError(e, this.imports);
+ }
+
+ try {
+ var compress = Boolean(options.compress);
+ if (compress) {
+ logger.warn("The compress option has been deprecated. We recommend you use a dedicated css minifier, for instance see less-plugin-clean-css.");
+ }
+
+ var toCSSOptions = {
+ compress: compress,
+ dumpLineNumbers: options.dumpLineNumbers,
+ strictUnits: Boolean(options.strictUnits),
+ numPrecision: 8};
+
+ if (options.sourceMap) {
+ sourceMapBuilder = new SourceMapBuilder(options.sourceMap);
+ result.css = sourceMapBuilder.toCSS(evaldRoot, toCSSOptions, this.imports);
+ } else {
+ result.css = evaldRoot.toCSS(toCSSOptions);
+ }
+ } catch (e) {
+ throw new LessError(e, this.imports);
+ }
+
+ if (options.pluginManager) {
+ var postProcessors = options.pluginManager.getPostProcessors();
+ for (var i = 0; i < postProcessors.length; i++) {
+ result.css = postProcessors[i].process(result.css, { sourceMap: sourceMapBuilder, options: options, imports: this.imports });
+ }
+ }
+ if (options.sourceMap) {
+ result.map = sourceMapBuilder.getExternalSourceMap();
+ }
+
+ result.imports = [];
+ for (var file in this.imports.files) {
+ if (this.imports.files.hasOwnProperty(file) && file !== this.imports.rootFilename) {
+ result.imports.push(file);
+ }
+ }
+ return result;
+ };
+ return ParseTree;
+};
+
+},{"./less-error":32,"./logger":33,"./transform-tree":44}],35:[function(require,module,exports){
+var PromiseConstructor,
+ contexts = require("./contexts"),
+ Parser = require('./parser/parser'),
+ PluginManager = require('./plugin-manager');
+
+module.exports = function(environment, ParseTree, ImportManager) {
+ var parse = function (input, options, callback) {
+ options = options || {};
+
+ if (typeof options === 'function') {
+ callback = options;
+ options = {};
+ }
+
+ if (!callback) {
+ if (!PromiseConstructor) {
+ PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
+ }
+ var self = this;
+ return new PromiseConstructor(function (resolve, reject) {
+ parse.call(self, input, options, function(err, output) {
+ if (err) {
+ reject(err);
+ } else {
+ resolve(output);
+ }
+ });
+ });
+ } else {
+ var context,
+ rootFileInfo,
+ pluginManager = new PluginManager(this);
+
+ pluginManager.addPlugins(options.plugins);
+ options.pluginManager = pluginManager;
+
+ context = new contexts.Parse(options);
+
+ if (options.rootFileInfo) {
+ rootFileInfo = options.rootFileInfo;
+ } else {
+ var filename = options.filename || "input";
+ var entryPath = filename.replace(/[^\/\\]*$/, "");
+ rootFileInfo = {
+ filename: filename,
+ relativeUrls: context.relativeUrls,
+ rootpath: context.rootpath || "",
+ currentDirectory: entryPath,
+ entryPath: entryPath,
+ rootFilename: filename
+ };
+ // add in a missing trailing slash
+ if (rootFileInfo.rootpath && rootFileInfo.rootpath.slice(-1) !== "/") {
+ rootFileInfo.rootpath += "/";
+ }
+ }
+
+ var imports = new ImportManager(context, rootFileInfo);
+
+ new Parser(context, imports, rootFileInfo)
+ .parse(input, function (e, root) {
+ if (e) { return callback(e); }
+ callback(null, root, imports, options);
+ }, options);
+ }
+ };
+ return parse;
+};
+
+},{"./contexts":11,"./parser/parser":38,"./plugin-manager":39,"promise":undefined}],36:[function(require,module,exports){
+// Split the input into chunks.
+module.exports = function (input, fail) {
+ var len = input.length, level = 0, parenLevel = 0,
+ lastOpening, lastOpeningParen, lastMultiComment, lastMultiCommentEndBrace,
+ chunks = [], emitFrom = 0,
+ chunkerCurrentIndex, currentChunkStartIndex, cc, cc2, matched;
+
+ function emitChunk(force) {
+ var len = chunkerCurrentIndex - emitFrom;
+ if (((len < 512) && !force) || !len) {
+ return;
+ }
+ chunks.push(input.slice(emitFrom, chunkerCurrentIndex + 1));
+ emitFrom = chunkerCurrentIndex + 1;
+ }
+
+ for (chunkerCurrentIndex = 0; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
+ cc = input.charCodeAt(chunkerCurrentIndex);
+ if (((cc >= 97) && (cc <= 122)) || (cc < 34)) {
+ // a-z or whitespace
+ continue;
+ }
+
+ switch (cc) {
+ case 40: // (
+ parenLevel++;
+ lastOpeningParen = chunkerCurrentIndex;
+ continue;
+ case 41: // )
+ if (--parenLevel < 0) {
+ return fail("missing opening `(`", chunkerCurrentIndex);
+ }
+ continue;
+ case 59: // ;
+ if (!parenLevel) { emitChunk(); }
+ continue;
+ case 123: // {
+ level++;
+ lastOpening = chunkerCurrentIndex;
+ continue;
+ case 125: // }
+ if (--level < 0) {
+ return fail("missing opening `{`", chunkerCurrentIndex);
+ }
+ if (!level && !parenLevel) { emitChunk(); }
+ continue;
+ case 92: // \
+ if (chunkerCurrentIndex < len - 1) { chunkerCurrentIndex++; continue; }
+ return fail("unescaped `\\`", chunkerCurrentIndex);
+ case 34:
+ case 39:
+ case 96: // ", ' and `
+ matched = 0;
+ currentChunkStartIndex = chunkerCurrentIndex;
+ for (chunkerCurrentIndex = chunkerCurrentIndex + 1; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
+ cc2 = input.charCodeAt(chunkerCurrentIndex);
+ if (cc2 > 96) { continue; }
+ if (cc2 == cc) { matched = 1; break; }
+ if (cc2 == 92) { // \
+ if (chunkerCurrentIndex == len - 1) {
+ return fail("unescaped `\\`", chunkerCurrentIndex);
+ }
+ chunkerCurrentIndex++;
+ }
+ }
+ if (matched) { continue; }
+ return fail("unmatched `" + String.fromCharCode(cc) + "`", currentChunkStartIndex);
+ case 47: // /, check for comment
+ if (parenLevel || (chunkerCurrentIndex == len - 1)) { continue; }
+ cc2 = input.charCodeAt(chunkerCurrentIndex + 1);
+ if (cc2 == 47) {
+ // //, find lnfeed
+ for (chunkerCurrentIndex = chunkerCurrentIndex + 2; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
+ cc2 = input.charCodeAt(chunkerCurrentIndex);
+ if ((cc2 <= 13) && ((cc2 == 10) || (cc2 == 13))) { break; }
+ }
+ } else if (cc2 == 42) {
+ // /*, find */
+ lastMultiComment = currentChunkStartIndex = chunkerCurrentIndex;
+ for (chunkerCurrentIndex = chunkerCurrentIndex + 2; chunkerCurrentIndex < len - 1; chunkerCurrentIndex++) {
+ cc2 = input.charCodeAt(chunkerCurrentIndex);
+ if (cc2 == 125) { lastMultiCommentEndBrace = chunkerCurrentIndex; }
+ if (cc2 != 42) { continue; }
+ if (input.charCodeAt(chunkerCurrentIndex + 1) == 47) { break; }
+ }
+ if (chunkerCurrentIndex == len - 1) {
+ return fail("missing closing `*/`", currentChunkStartIndex);
+ }
+ chunkerCurrentIndex++;
+ }
+ continue;
+ case 42: // *, check for unmatched */
+ if ((chunkerCurrentIndex < len - 1) && (input.charCodeAt(chunkerCurrentIndex + 1) == 47)) {
+ return fail("unmatched `/*`", chunkerCurrentIndex);
+ }
+ continue;
+ }
+ }
+
+ if (level !== 0) {
+ if ((lastMultiComment > lastOpening) && (lastMultiCommentEndBrace > lastMultiComment)) {
+ return fail("missing closing `}` or `*/`", lastOpening);
+ } else {
+ return fail("missing closing `}`", lastOpening);
+ }
+ } else if (parenLevel !== 0) {
+ return fail("missing closing `)`", lastOpeningParen);
+ }
+
+ emitChunk(true);
+ return chunks;
+};
+
+},{}],37:[function(require,module,exports){
+var chunker = require('./chunker');
+
+module.exports = function() {
+ var input, // LeSS input string
+ j, // current chunk
+ saveStack = [], // holds state for backtracking
+ furthest, // furthest index the parser has gone to
+ furthestPossibleErrorMessage,// if this is furthest we got to, this is the probably cause
+ chunks, // chunkified input
+ current, // current chunk
+ currentPos, // index of current chunk, in `input`
+ parserInput = {};
+
+ var CHARCODE_SPACE = 32,
+ CHARCODE_TAB = 9,
+ CHARCODE_LF = 10,
+ CHARCODE_CR = 13,
+ CHARCODE_PLUS = 43,
+ CHARCODE_COMMA = 44,
+ CHARCODE_FORWARD_SLASH = 47,
+ CHARCODE_9 = 57;
+
+ function skipWhitespace(length) {
+ var oldi = parserInput.i, oldj = j,
+ curr = parserInput.i - currentPos,
+ endIndex = parserInput.i + current.length - curr,
+ mem = (parserInput.i += length),
+ inp = input,
+ c, nextChar, comment;
+
+ for (; parserInput.i < endIndex; parserInput.i++) {
+ c = inp.charCodeAt(parserInput.i);
+
+ if (parserInput.autoCommentAbsorb && c === CHARCODE_FORWARD_SLASH) {
+ nextChar = inp.charAt(parserInput.i + 1);
+ if (nextChar === '/') {
+ comment = {index: parserInput.i, isLineComment: true};
+ var nextNewLine = inp.indexOf("\n", parserInput.i + 2);
+ if (nextNewLine < 0) {
+ nextNewLine = endIndex;
+ }
+ parserInput.i = nextNewLine;
+ comment.text = inp.substr(comment.index, parserInput.i - comment.index);
+ parserInput.commentStore.push(comment);
+ continue;
+ } else if (nextChar === '*') {
+ var nextStarSlash = inp.indexOf("*/", parserInput.i + 2);
+ if (nextStarSlash >= 0) {
+ comment = {
+ index: parserInput.i,
+ text: inp.substr(parserInput.i, nextStarSlash + 2 - parserInput.i),
+ isLineComment: false
+ };
+ parserInput.i += comment.text.length - 1;
+ parserInput.commentStore.push(comment);
+ continue;
+ }
+ }
+ break;
+ }
+
+ if ((c !== CHARCODE_SPACE) && (c !== CHARCODE_LF) && (c !== CHARCODE_TAB) && (c !== CHARCODE_CR)) {
+ break;
+ }
+ }
+
+ current = current.slice(length + parserInput.i - mem + curr);
+ currentPos = parserInput.i;
+
+ if (!current.length) {
+ if (j < chunks.length - 1) {
+ current = chunks[++j];
+ skipWhitespace(0); // skip space at the beginning of a chunk
+ return true; // things changed
+ }
+ parserInput.finished = true;
+ }
+
+ return oldi !== parserInput.i || oldj !== j;
+ }
+
+ parserInput.save = function() {
+ currentPos = parserInput.i;
+ saveStack.push( { current: current, i: parserInput.i, j: j });
+ };
+ parserInput.restore = function(possibleErrorMessage) {
+
+ if (parserInput.i > furthest || (parserInput.i === furthest && possibleErrorMessage && !furthestPossibleErrorMessage)) {
+ furthest = parserInput.i;
+ furthestPossibleErrorMessage = possibleErrorMessage;
+ }
+ var state = saveStack.pop();
+ current = state.current;
+ currentPos = parserInput.i = state.i;
+ j = state.j;
+ };
+ parserInput.forget = function() {
+ saveStack.pop();
+ };
+ parserInput.isWhitespace = function (offset) {
+ var pos = parserInput.i + (offset || 0),
+ code = input.charCodeAt(pos);
+ return (code === CHARCODE_SPACE || code === CHARCODE_CR || code === CHARCODE_TAB || code === CHARCODE_LF);
+ };
+
+ // Specialization of $(tok)
+ parserInput.$re = function(tok) {
+ if (parserInput.i > currentPos) {
+ current = current.slice(parserInput.i - currentPos);
+ currentPos = parserInput.i;
+ }
+
+ var m = tok.exec(current);
+ if (!m) {
+ return null;
+ }
+
+ skipWhitespace(m[0].length);
+ if (typeof m === "string") {
+ return m;
+ }
+
+ return m.length === 1 ? m[0] : m;
+ };
+
+ parserInput.$char = function(tok) {
+ if (input.charAt(parserInput.i) !== tok) {
+ return null;
+ }
+ skipWhitespace(1);
+ return tok;
+ };
+
+ parserInput.$str = function(tok) {
+ var tokLength = tok.length;
+
+ // https://jsperf.com/string-startswith/21
+ for (var i = 0; i < tokLength; i++) {
+ if (input.charAt(parserInput.i + i) !== tok.charAt(i)) {
+ return null;
+ }
+ }
+
+ skipWhitespace(tokLength);
+ return tok;
+ };
+
+ parserInput.$quoted = function() {
+
+ var startChar = input.charAt(parserInput.i);
+ if (startChar !== "'" && startChar !== '"') {
+ return;
+ }
+ var length = input.length,
+ currentPosition = parserInput.i;
+
+ for (var i = 1; i + currentPosition < length; i++) {
+ var nextChar = input.charAt(i + currentPosition);
+ switch(nextChar) {
+ case "\\":
+ i++;
+ continue;
+ case "\r":
+ case "\n":
+ break;
+ case startChar:
+ var str = input.substr(currentPosition, i + 1);
+ skipWhitespace(i + 1);
+ return str;
+ default:
+ }
+ }
+ return null;
+ };
+
+ parserInput.autoCommentAbsorb = true;
+ parserInput.commentStore = [];
+ parserInput.finished = false;
+
+ // Same as $(), but don't change the state of the parser,
+ // just return the match.
+ parserInput.peek = function(tok) {
+ if (typeof tok === 'string') {
+ // https://jsperf.com/string-startswith/21
+ for (var i = 0; i < tok.length; i++) {
+ if (input.charAt(parserInput.i + i) !== tok.charAt(i)) {
+ return false;
+ }
+ }
+ return true;
+ } else {
+ return tok.test(current);
+ }
+ };
+
+ // Specialization of peek()
+ // TODO remove or change some currentChar calls to peekChar
+ parserInput.peekChar = function(tok) {
+ return input.charAt(parserInput.i) === tok;
+ };
+
+ parserInput.currentChar = function() {
+ return input.charAt(parserInput.i);
+ };
+
+ parserInput.getInput = function() {
+ return input;
+ };
+
+ parserInput.peekNotNumeric = function() {
+ var c = input.charCodeAt(parserInput.i);
+ //Is the first char of the dimension 0-9, '.', '+' or '-'
+ return (c > CHARCODE_9 || c < CHARCODE_PLUS) || c === CHARCODE_FORWARD_SLASH || c === CHARCODE_COMMA;
+ };
+
+ parserInput.start = function(str, chunkInput, failFunction) {
+ input = str;
+ parserInput.i = j = currentPos = furthest = 0;
+
+ // chunking apparently makes things quicker (but my tests indicate
+ // it might actually make things slower in node at least)
+ // and it is a non-perfect parse - it can't recognise
+ // unquoted urls, meaning it can't distinguish comments
+ // meaning comments with quotes or {}() in them get 'counted'
+ // and then lead to parse errors.
+ // In addition if the chunking chunks in the wrong place we might
+ // not be able to parse a parser statement in one go
+ // this is officially deprecated but can be switched on via an option
+ // in the case it causes too much performance issues.
+ if (chunkInput) {
+ chunks = chunker(str, failFunction);
+ } else {
+ chunks = [str];
+ }
+
+ current = chunks[0];
+
+ skipWhitespace(0);
+ };
+
+ parserInput.end = function() {
+ var message,
+ isFinished = parserInput.i >= input.length;
+
+ if (parserInput.i < furthest) {
+ message = furthestPossibleErrorMessage;
+ parserInput.i = furthest;
+ }
+ return {
+ isFinished: isFinished,
+ furthest: parserInput.i,
+ furthestPossibleErrorMessage: message,
+ furthestReachedEnd: parserInput.i >= input.length - 1,
+ furthestChar: input[parserInput.i]
+ };
+ };
+
+ return parserInput;
+};
+
+},{"./chunker":36}],38:[function(require,module,exports){
+var LessError = require('../less-error'),
+ tree = require("../tree"),
+ visitors = require("../visitors"),
+ getParserInput = require("./parser-input"),
+ utils = require("../utils");
+
+//
+// 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 `currentPos` 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.
+//`
+//
+var Parser = function Parser(context, imports, fileInfo) {
+ var parsers,
+ parserInput = getParserInput();
+
+ function error(msg, type) {
+ throw new LessError(
+ {
+ index: parserInput.i,
+ filename: fileInfo.filename,
+ type: type || 'Syntax',
+ message: msg
+ },
+ imports
+ );
+ }
+
+ function expect(arg, msg, index) {
+ // some older browsers return typeof 'function' for RegExp
+ var result = (arg instanceof Function) ? arg.call(parsers) : parserInput.$re(arg);
+ if (result) {
+ return result;
+ }
+ error(msg || (typeof arg === 'string' ? "expected '" + arg + "' got '" + parserInput.currentChar() + "'"
+ : "unexpected token"));
+ }
+
+ // Specialization of expect()
+ function expectChar(arg, msg) {
+ if (parserInput.$char(arg)) {
+ return arg;
+ }
+ error(msg || "expected '" + arg + "' got '" + parserInput.currentChar() + "'");
+ }
+
+ function getDebugInfo(index) {
+ var filename = fileInfo.filename;
+
+ return {
+ lineNumber: utils.getLocation(index, parserInput.getInput()).line + 1,
+ fileName: filename
+ };
+ }
+
+ //
+ // The Parser
+ //
+ return {
+
+ //
+ // Parse an input string into an abstract syntax tree,
+ // @param str A string containing 'less' markup
+ // @param callback call `callback` when done.
+ // @param [additionalData] An optional map which can contains vars - a map (key, value) of variables to apply
+ //
+ parse: function (str, callback, additionalData) {
+ var root, error = null, globalVars, modifyVars, ignored, preText = "";
+
+ globalVars = (additionalData && additionalData.globalVars) ? Parser.serializeVars(additionalData.globalVars) + '\n' : '';
+ modifyVars = (additionalData && additionalData.modifyVars) ? '\n' + Parser.serializeVars(additionalData.modifyVars) : '';
+
+ if (context.pluginManager) {
+ var preProcessors = context.pluginManager.getPreProcessors();
+ for (var i = 0; i < preProcessors.length; i++) {
+ str = preProcessors[i].process(str, { context: context, imports: imports, fileInfo: fileInfo });
+ }
+ }
+
+ if (globalVars || (additionalData && additionalData.banner)) {
+ preText = ((additionalData && additionalData.banner) ? additionalData.banner : "") + globalVars;
+ ignored = imports.contentsIgnoredChars;
+ ignored[fileInfo.filename] = ignored[fileInfo.filename] || 0;
+ ignored[fileInfo.filename] += preText.length;
+ }
+
+ str = str.replace(/\r\n?/g, '\n');
+ // Remove potential UTF Byte Order Mark
+ str = preText + str.replace(/^\uFEFF/, '') + modifyVars;
+ imports.contents[fileInfo.filename] = str;
+
+ // 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 {
+ parserInput.start(str, context.chunkInput, function fail(msg, index) {
+ throw new LessError({
+ index: index,
+ type: 'Parse',
+ message: msg,
+ filename: fileInfo.filename
+ }, imports);
+ });
+
+ root = new(tree.Ruleset)(null, this.parsers.primary());
+ root.root = true;
+ root.firstRoot = true;
+ } catch (e) {
+ return callback(new LessError(e, imports, fileInfo.filename));
+ }
+
+ // 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 occurred.
+ // We split it up into two parts (the part which parsed,
+ // and the part which didn't), so we can color them differently.
+ var endInfo = parserInput.end();
+ if (!endInfo.isFinished) {
+
+ var message = endInfo.furthestPossibleErrorMessage;
+
+ if (!message) {
+ message = "Unrecognised input";
+ if (endInfo.furthestChar === '}') {
+ message += ". Possibly missing opening '{'";
+ } else if (endInfo.furthestChar === ')') {
+ message += ". Possibly missing opening '('";
+ } else if (endInfo.furthestReachedEnd) {
+ message += ". Possibly missing something";
+ }
+ }
+
+ error = new LessError({
+ type: "Parse",
+ message: message,
+ index: endInfo.furthest,
+ filename: fileInfo.filename
+ }, imports);
+ }
+
+ var finish = function (e) {
+ e = error || e || imports.error;
+
+ if (e) {
+ if (!(e instanceof LessError)) {
+ e = new LessError(e, imports, fileInfo.filename);
+ }
+
+ return callback(e);
+ }
+ else {
+ return callback(null, root);
+ }
+ };
+
+ if (context.processImports !== false) {
+ new visitors.ImportVisitor(imports, finish)
+ .run(root);
+ } else {
+ return finish();
+ }
+ },
+
+ //
+ // Here in, the parsing rules/functions
+ //
+ // The basic structure of the syntax tree generated is as follows:
+ //
+ // Ruleset -> Rule -> Value -> Expression -> Entity
+ //
+ // Here's some Less code:
+ //
+ // .class {
+ // color: #fff;
+ // border: 1px solid #000;
+ // width: @w + 4px;
+ // > .child {...}
+ // }
+ //
+ // And here's what the parse tree might look like:
+ //
+ // Ruleset (Selector '.class', [
+ // Rule ("color", Value ([Expression [Color #fff]]))
+ // Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
+ // Rule ("width", Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
+ // Ruleset (Selector [Element '>', '.child'], [...])
+ // ])
+ //
+ // In general, most rules will try to parse a token with the `$re()` function, and if the return
+ // value is truly, will return a new node, of the relevant type. Sometimes, we need to check
+ // first, before parsing, that's when we use `peek()`.
+ //
+ parsers: parsers = {
+ //
+ // The `primary` rule is the *entry* and *exit* point of the parser.
+ // The rules here can appear at any level of the parse tree.
+ //
+ // The recursive nature of the grammar is an interplay between the `block`
+ // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
+ // as represented by this simplified grammar:
+ //
+ // primary → (ruleset | rule)+
+ // ruleset → selector+ block
+ // block → '{' primary '}'
+ //
+ // Only at one point is the primary rule not called from the
+ // block rule: at the root level.
+ //
+ primary: function () {
+ var mixin = this.mixin, root = [], node;
+
+ while (true) {
+ while (true) {
+ node = this.comment();
+ if (!node) { break; }
+ root.push(node);
+ }
+ // always process comments before deciding if finished
+ if (parserInput.finished) {
+ break;
+ }
+ if (parserInput.peek('}')) {
+ break;
+ }
+
+ node = this.extendRule();
+ if (node) {
+ root = root.concat(node);
+ continue;
+ }
+
+ node = mixin.definition() || this.rule() || this.ruleset() ||
+ mixin.call() || this.rulesetCall() || this.entities.call() || this.directive();
+ if (node) {
+ root.push(node);
+ } else {
+ var foundSemiColon = false;
+ while (parserInput.$char(";")) {
+ foundSemiColon = true;
+ }
+ if (!foundSemiColon) {
+ break;
+ }
+ }
+ }
+
+ return root;
+ },
+
+ // comments are collected by the main parsing mechanism and then assigned to nodes
+ // where the current structure allows it
+ comment: function () {
+ if (parserInput.commentStore.length) {
+ var comment = parserInput.commentStore.shift();
+ return new(tree.Comment)(comment.text, comment.isLineComment, comment.index, fileInfo);
+ }
+ },
+
+ //
+ // 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, index = parserInput.i, isEscaped = false;
+
+ parserInput.save();
+ if (parserInput.$char("~")) {
+ isEscaped = true;
+ }
+ str = parserInput.$quoted();
+ if (!str) {
+ parserInput.restore();
+ return;
+ }
+ parserInput.forget();
+
+ return new(tree.Quoted)(str.charAt(0), str.substr(1, str.length - 2), isEscaped, index, fileInfo);
+ },
+
+ //
+ // A catch-all word, such as:
+ //
+ // black border-collapse
+ //
+ keyword: function () {
+ var k = parserInput.$char("%") || parserInput.$re(/^[_A-Za-z-][_A-Za-z0-9-]*/);
+ if (k) {
+ return tree.Color.fromKeyword(k) || new(tree.Keyword)(k);
+ }
+ },
+
+ //
+ // A function call
+ //
+ // rgb(255, 0, 255)
+ //
+ // We also try to catch IE's `alpha()`, but let the `alpha` parser
+ // deal with the details.
+ //
+ // The arguments are parsed with the `entities.arguments` parser.
+ //
+ call: function () {
+ var name, nameLC, args, alpha, index = parserInput.i;
+
+ // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
+ if (parserInput.peek(/^url\(/i)) {
+ return;
+ }
+
+ parserInput.save();
+
+ name = parserInput.$re(/^([\w-]+|%|progid:[\w\.]+)\(/);
+ if (!name) { parserInput.forget(); return; }
+
+ name = name[1];
+ nameLC = name.toLowerCase();
+
+ if (nameLC === 'alpha') {
+ alpha = parsers.alpha();
+ if (alpha) {
+ parserInput.forget();
+ return alpha;
+ }
+ }
+
+ args = this.arguments();
+
+ if (! parserInput.$char(')')) {
+ parserInput.restore("Could not parse call arguments or missing ')'");
+ return;
+ }
+
+ parserInput.forget();
+ return new(tree.Call)(name, args, index, fileInfo);
+ },
+ arguments: function () {
+ var argsSemiColon = [], argsComma = [],
+ expressions = [],
+ isSemiColonSeparated, value, arg;
+
+ parserInput.save();
+
+ while (true) {
+
+ arg = parsers.detachedRuleset() || this.assignment() || parsers.expression();
+
+ if (!arg) {
+ break;
+ }
+
+ value = arg;
+
+ if (arg.value && arg.value.length == 1) {
+ value = arg.value[0];
+ }
+
+ if (value) {
+ expressions.push(value);
+ }
+
+ argsComma.push(value);
+
+ if (parserInput.$char(',')) {
+ continue;
+ }
+
+ if (parserInput.$char(';') || isSemiColonSeparated) {
+
+ isSemiColonSeparated = true;
+
+ if (expressions.length > 1) {
+ value = new(tree.Value)(expressions);
+ }
+ argsSemiColon.push(value);
+
+ expressions = [];
+ }
+ }
+
+ parserInput.forget();
+ return isSemiColonSeparated ? argsSemiColon : argsComma;
+ },
+ literal: function () {
+ return this.dimension() ||
+ this.color() ||
+ this.quoted() ||
+ this.unicodeDescriptor();
+ },
+
+ // Assignments are argument entities for calls.
+ // They are present in ie filter properties as shown below.
+ //
+ // filter: progid:DXImageTransform.Microsoft.Alpha( *opacity=50* )
+ //
+
+ assignment: function () {
+ var key, value;
+ parserInput.save();
+ key = parserInput.$re(/^\w+(?=\s?=)/i);
+ if (!key) {
+ parserInput.restore();
+ return;
+ }
+ if (!parserInput.$char('=')) {
+ parserInput.restore();
+ return;
+ }
+ value = parsers.entity();
+ if (value) {
+ parserInput.forget();
+ return new(tree.Assignment)(key, value);
+ } else {
+ parserInput.restore();
+ }
+ },
+
+ //
+ // Parse url() tokens
+ //
+ // We use a specific rule for urls, because they don't really behave like
+ // standard function calls. The difference is that the argument doesn't have
+ // to be enclosed within a string, so it can't be parsed as an Expression.
+ //
+ url: function () {
+ var value, index = parserInput.i;
+
+ parserInput.autoCommentAbsorb = false;
+
+ if (!parserInput.$str("url(")) {
+ parserInput.autoCommentAbsorb = true;
+ return;
+ }
+
+ value = this.quoted() || this.variable() ||
+ parserInput.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/) || "";
+
+ parserInput.autoCommentAbsorb = true;
+
+ expectChar(')');
+
+ return new(tree.URL)((value.value != null || value instanceof tree.Variable) ?
+ value : new(tree.Anonymous)(value), index, fileInfo);
+ },
+
+ //
+ // 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 = parserInput.i;
+
+ if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^@@?[\w-]+/))) {
+ return new(tree.Variable)(name, index, fileInfo);
+ }
+ },
+
+ // A variable entity using the protective {} e.g. @{var}
+ variableCurly: function () {
+ var curly, index = parserInput.i;
+
+ if (parserInput.currentChar() === '@' && (curly = parserInput.$re(/^@\{([\w-]+)\}/))) {
+ return new(tree.Variable)("@" + curly[1], index, fileInfo);
+ }
+ },
+
+ //
+ // A Hexadecimal color
+ //
+ // #4F3C2F
+ //
+ // `rgb` and `hsl` colors are parsed through the `entities.call` parser.
+ //
+ color: function () {
+ var rgb;
+
+ if (parserInput.currentChar() === '#' && (rgb = parserInput.$re(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))) {
+ // strip colons, brackets, whitespaces and other characters that should not
+ // definitely be part of color string
+ var colorCandidateString = rgb.input.match(/^#([\w]+).*/);
+ colorCandidateString = colorCandidateString[1];
+ if (!colorCandidateString.match(/^[A-Fa-f0-9]+$/)) { // verify if candidate consists only of allowed HEX characters
+ error("Invalid HEX color code");
+ }
+ return new(tree.Color)(rgb[1], undefined, '#' + colorCandidateString);
+ }
+ },
+
+ colorKeyword: function () {
+ parserInput.save();
+ var autoCommentAbsorb = parserInput.autoCommentAbsorb;
+ parserInput.autoCommentAbsorb = false;
+ var k = parserInput.$re(/^[_A-Za-z-][_A-Za-z0-9-]+/);
+ parserInput.autoCommentAbsorb = autoCommentAbsorb;
+ if (!k) {
+ parserInput.forget();
+ return;
+ }
+ parserInput.restore();
+ var color = tree.Color.fromKeyword(k);
+ if (color) {
+ parserInput.$str(k);
+ return color;
+ }
+ },
+
+ //
+ // A Dimension, that is, a number and a unit
+ //
+ // 0.5em 95%
+ //
+ dimension: function () {
+ if (parserInput.peekNotNumeric()) {
+ return;
+ }
+
+ var value = parserInput.$re(/^([+-]?\d*\.?\d+)(%|[a-z_]+)?/i);
+ if (value) {
+ return new(tree.Dimension)(value[1], value[2]);
+ }
+ },
+
+ //
+ // A unicode descriptor, as is used in unicode-range
+ //
+ // U+0?? or U+00A1-00A9
+ //
+ unicodeDescriptor: function () {
+ var ud;
+
+ ud = parserInput.$re(/^U\+[0-9a-fA-F?]+(\-[0-9a-fA-F?]+)?/);
+ if (ud) {
+ return new(tree.UnicodeDescriptor)(ud[0]);
+ }
+ },
+
+ //
+ // JavaScript code to be evaluated
+ //
+ // `window.location.href`
+ //
+ javascript: function () {
+ var js, index = parserInput.i;
+
+ parserInput.save();
+
+ var escape = parserInput.$char("~");
+ var jsQuote = parserInput.$char("`");
+
+ if (!jsQuote) {
+ parserInput.restore();
+ return;
+ }
+
+ js = parserInput.$re(/^[^`]*`/);
+ if (js) {
+ parserInput.forget();
+ return new(tree.JavaScript)(js.substr(0, js.length - 1), Boolean(escape), index, fileInfo);
+ }
+ parserInput.restore("invalid javascript definition");
+ }
+ },
+
+ //
+ // The variable part of a variable definition. Used in the `rule` parser
+ //
+ // @fink:
+ //
+ variable: function () {
+ var name;
+
+ if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^(@[\w-]+)\s*:/))) { return name[1]; }
+ },
+
+ //
+ // The variable part of a variable definition. Used in the `rule` parser
+ //
+ // @fink();
+ //
+ rulesetCall: function () {
+ var name;
+
+ if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^(@[\w-]+)\(\s*\)\s*;/))) {
+ return new tree.RulesetCall(name[1]);
+ }
+ },
+
+ //
+ // extend syntax - used to extend selectors
+ //
+ extend: function(isRule) {
+ var elements, e, index = parserInput.i, option, extendList, extend;
+
+ if (!parserInput.$str(isRule ? "&:extend(" : ":extend(")) {
+ return;
+ }
+
+ do {
+ option = null;
+ elements = null;
+ while (! (option = parserInput.$re(/^(all)(?=\s*(\)|,))/))) {
+ e = this.element();
+ if (!e) {
+ break;
+ }
+ if (elements) {
+ elements.push(e);
+ } else {
+ elements = [ e ];
+ }
+ }
+
+ option = option && option[1];
+ if (!elements) {
+ error("Missing target selector for :extend().");
+ }
+ extend = new(tree.Extend)(new(tree.Selector)(elements), option, index, fileInfo);
+ if (extendList) {
+ extendList.push(extend);
+ } else {
+ extendList = [ extend ];
+ }
+ } while (parserInput.$char(","));
+
+ expect(/^\)/);
+
+ if (isRule) {
+ expect(/^;/);
+ }
+
+ return extendList;
+ },
+
+ //
+ // extendRule - used in a rule to extend all the parent selectors
+ //
+ extendRule: function() {
+ return this.extend(true);
+ },
+
+ //
+ // Mixins
+ //
+ mixin: {
+ //
+ // A Mixin call, with an optional argument list
+ //
+ // #mixins > .square(#fff);
+ // .rounded(4px, black);
+ // .button;
+ //
+ // The `while` loop is there because mixins can be
+ // namespaced, but we only support the child and descendant
+ // selector for now.
+ //
+ call: function () {
+ var s = parserInput.currentChar(), important = false, index = parserInput.i, elemIndex,
+ elements, elem, e, c, args;
+
+ if (s !== '.' && s !== '#') { return; }
+
+ parserInput.save(); // stop us absorbing part of an invalid selector
+
+ while (true) {
+ elemIndex = parserInput.i;
+ e = parserInput.$re(/^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/);
+ if (!e) {
+ break;
+ }
+ elem = new(tree.Element)(c, e, elemIndex, fileInfo);
+ if (elements) {
+ elements.push(elem);
+ } else {
+ elements = [ elem ];
+ }
+ c = parserInput.$char('>');
+ }
+
+ if (elements) {
+ if (parserInput.$char('(')) {
+ args = this.args(true).args;
+ expectChar(')');
+ }
+
+ if (parsers.important()) {
+ important = true;
+ }
+
+ if (parsers.end()) {
+ parserInput.forget();
+ return new(tree.mixin.Call)(elements, args, index, fileInfo, important);
+ }
+ }
+
+ parserInput.restore();
+ },
+ args: function (isCall) {
+ var entities = parsers.entities,
+ returner = { args:null, variadic: false },
+ expressions = [], argsSemiColon = [], argsComma = [],
+ isSemiColonSeparated, expressionContainsNamed, name, nameLoop,
+ value, arg, expand;
+
+ parserInput.save();
+
+ while (true) {
+ if (isCall) {
+ arg = parsers.detachedRuleset() || parsers.expression();
+ } else {
+ parserInput.commentStore.length = 0;
+ if (parserInput.$str("...")) {
+ returner.variadic = true;
+ if (parserInput.$char(";") && !isSemiColonSeparated) {
+ isSemiColonSeparated = true;
+ }
+ (isSemiColonSeparated ? argsSemiColon : argsComma)
+ .push({ variadic: true });
+ break;
+ }
+ arg = entities.variable() || entities.literal() || entities.keyword();
+ }
+
+ if (!arg) {
+ break;
+ }
+
+ nameLoop = null;
+ if (arg.throwAwayComments) {
+ arg.throwAwayComments();
+ }
+ value = arg;
+ var val = null;
+
+ if (isCall) {
+ // Variable
+ if (arg.value && arg.value.length == 1) {
+ val = arg.value[0];
+ }
+ } else {
+ val = arg;
+ }
+
+ if (val && val instanceof tree.Variable) {
+ if (parserInput.$char(':')) {
+ if (expressions.length > 0) {
+ if (isSemiColonSeparated) {
+ error("Cannot mix ; and , as delimiter types");
+ }
+ expressionContainsNamed = true;
+ }
+
+ value = parsers.detachedRuleset() || parsers.expression();
+
+ if (!value) {
+ if (isCall) {
+ error("could not understand value for named argument");
+ } else {
+ parserInput.restore();
+ returner.args = [];
+ return returner;
+ }
+ }
+ nameLoop = (name = val.name);
+ } else if (parserInput.$str("...")) {
+ if (!isCall) {
+ returner.variadic = true;
+ if (parserInput.$char(";") && !isSemiColonSeparated) {
+ isSemiColonSeparated = true;
+ }
+ (isSemiColonSeparated ? argsSemiColon : argsComma)
+ .push({ name: arg.name, variadic: true });
+ break;
+ } else {
+ expand = true;
+ }
+ } else if (!isCall) {
+ name = nameLoop = val.name;
+ value = null;
+ }
+ }
+
+ if (value) {
+ expressions.push(value);
+ }
+
+ argsComma.push({ name:nameLoop, value:value, expand:expand });
+
+ if (parserInput.$char(',')) {
+ continue;
+ }
+
+ if (parserInput.$char(';') || isSemiColonSeparated) {
+
+ if (expressionContainsNamed) {
+ error("Cannot mix ; and , as delimiter types");
+ }
+
+ isSemiColonSeparated = true;
+
+ if (expressions.length > 1) {
+ value = new(tree.Value)(expressions);
+ }
+ argsSemiColon.push({ name:name, value:value, expand:expand });
+
+ name = null;
+ expressions = [];
+ expressionContainsNamed = false;
+ }
+ }
+
+ parserInput.forget();
+ returner.args = isSemiColonSeparated ? argsSemiColon : argsComma;
+ return returner;
+ },
+ //
+ // A Mixin definition, with a list of parameters
+ //
+ // .rounded (@radius: 2px, @color) {
+ // ...
+ // }
+ //
+ // Until we have a finer grained state-machine, we have to
+ // do a look-ahead, to make sure we don't have a mixin call.
+ // See the `rule` function for more information.
+ //
+ // We start by matching `.rounded (`, and then proceed on to
+ // the argument list, which has optional default values.
+ // We store the parameters in `params`, with a `value` key,
+ // if there is a value, such as in the case of `@radius`.
+ //
+ // Once we've got our params list, and a closing `)`, we parse
+ // the `{...}` block.
+ //
+ definition: function () {
+ var name, params = [], match, ruleset, cond, variadic = false;
+ if ((parserInput.currentChar() !== '.' && parserInput.currentChar() !== '#') ||
+ parserInput.peek(/^[^{]*\}/)) {
+ return;
+ }
+
+ parserInput.save();
+
+ match = parserInput.$re(/^([#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+)\s*\(/);
+ if (match) {
+ name = match[1];
+
+ var argInfo = this.args(false);
+ params = argInfo.args;
+ variadic = argInfo.variadic;
+
+ // .mixincall("@{a}");
+ // looks a bit like a mixin definition..
+ // also
+ // .mixincall(@a: {rule: set;});
+ // so we have to be nice and restore
+ if (!parserInput.$char(')')) {
+ parserInput.restore("Missing closing ')'");
+ return;
+ }
+
+ parserInput.commentStore.length = 0;
+
+ if (parserInput.$str("when")) { // Guard
+ cond = expect(parsers.conditions, 'expected condition');
+ }
+
+ ruleset = parsers.block();
+
+ if (ruleset) {
+ parserInput.forget();
+ return new(tree.mixin.Definition)(name, params, ruleset, cond, variadic);
+ } else {
+ parserInput.restore();
+ }
+ } else {
+ parserInput.forget();
+ }
+ }
+ },
+
+ //
+ // Entities are the smallest recognized token,
+ // and can be found inside a rule's value.
+ //
+ entity: function () {
+ var entities = this.entities;
+
+ return this.comment() || entities.literal() || entities.variable() || entities.url() ||
+ entities.call() || entities.keyword() || entities.javascript();
+ },
+
+ //
+ // 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 omitted.
+ //
+ end: function () {
+ return parserInput.$char(';') || parserInput.peek('}');
+ },
+
+ //
+ // IE's alpha function
+ //
+ // alpha(opacity=88)
+ //
+ alpha: function () {
+ var value;
+
+ // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
+ if (! parserInput.$re(/^opacity=/i)) { return; }
+ value = parserInput.$re(/^\d+/);
+ if (!value) {
+ value = expect(this.entities.variable, "Could not parse alpha");
+ }
+ expectChar(')');
+ return new(tree.Alpha)(value);
+ },
+
+ //
+ // A Selector Element
+ //
+ // div
+ // + h1
+ // #socks
+ // input[type="text"]
+ //
+ // Elements are the building blocks for Selectors,
+ // they are made out of a `Combinator` (see combinator rule),
+ // and an element name, such as a tag a class, or `*`.
+ //
+ element: function () {
+ var e, c, v, index = parserInput.i;
+
+ c = this.combinator();
+
+ e = parserInput.$re(/^(?:\d+\.\d+|\d+)%/) ||
+ parserInput.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/) ||
+ parserInput.$char('*') || parserInput.$char('&') || this.attribute() ||
+ parserInput.$re(/^\([^&()@]+\)/) || parserInput.$re(/^[\.#:](?=@)/) ||
+ this.entities.variableCurly();
+
+ if (! e) {
+ parserInput.save();
+ if (parserInput.$char('(')) {
+ if ((v = this.selector()) && parserInput.$char(')')) {
+ e = new(tree.Paren)(v);
+ parserInput.forget();
+ } else {
+ parserInput.restore("Missing closing ')'");
+ }
+ } else {
+ parserInput.forget();
+ }
+ }
+
+ if (e) { return new(tree.Element)(c, e, index, fileInfo); }
+ },
+
+ //
+ // Combinators combine elements together, in a Selector.
+ //
+ // Because our parser isn't white-space sensitive, special care
+ // has to be taken, when parsing the descendant combinator, ` `,
+ // as it's an empty space. We have to check the previous character
+ // in the input, to see if it's a ` ` character. More info on how
+ // we deal with this in *combinator.js*.
+ //
+ combinator: function () {
+ var c = parserInput.currentChar();
+
+ if (c === '/') {
+ parserInput.save();
+ var slashedCombinator = parserInput.$re(/^\/[a-z]+\//i);
+ if (slashedCombinator) {
+ parserInput.forget();
+ return new(tree.Combinator)(slashedCombinator);
+ }
+ parserInput.restore();
+ }
+
+ if (c === '>' || c === '+' || c === '~' || c === '|' || c === '^') {
+ parserInput.i++;
+ if (c === '^' && parserInput.currentChar() === '^') {
+ c = '^^';
+ parserInput.i++;
+ }
+ while (parserInput.isWhitespace()) { parserInput.i++; }
+ return new(tree.Combinator)(c);
+ } else if (parserInput.isWhitespace(-1)) {
+ return new(tree.Combinator)(" ");
+ } else {
+ return new(tree.Combinator)(null);
+ }
+ },
+ //
+ // A CSS selector (see selector below)
+ // with less extensions e.g. the ability to extend and guard
+ //
+ lessSelector: function () {
+ return this.selector(true);
+ },
+ //
+ // A CSS Selector
+ //
+ // .class > div + h1
+ // li a:hover
+ //
+ // Selectors are made out of one or more Elements, see above.
+ //
+ selector: function (isLess) {
+ var index = parserInput.i, elements, extendList, c, e, allExtends, when, condition;
+
+ while ((isLess && (extendList = this.extend())) || (isLess && (when = parserInput.$str("when"))) || (e = this.element())) {
+ if (when) {
+ condition = expect(this.conditions, 'expected condition');
+ } else if (condition) {
+ error("CSS guard can only be used at the end of selector");
+ } else if (extendList) {
+ if (allExtends) {
+ allExtends = allExtends.concat(extendList);
+ } else {
+ allExtends = extendList;
+ }
+ } else {
+ if (allExtends) { error("Extend can only be used at the end of selector"); }
+ c = parserInput.currentChar();
+ if (elements) {
+ elements.push(e);
+ } else {
+ elements = [ e ];
+ }
+ e = null;
+ }
+ if (c === '{' || c === '}' || c === ';' || c === ',' || c === ')') {
+ break;
+ }
+ }
+
+ if (elements) { return new(tree.Selector)(elements, allExtends, condition, index, fileInfo); }
+ if (allExtends) { error("Extend must be used to extend a selector, it cannot be used on its own"); }
+ },
+ attribute: function () {
+ if (! parserInput.$char('[')) { return; }
+
+ var entities = this.entities,
+ key, val, op;
+
+ if (!(key = entities.variableCurly())) {
+ key = expect(/^(?:[_A-Za-z0-9-\*]*\|)?(?:[_A-Za-z0-9-]|\\.)+/);
+ }
+
+ op = parserInput.$re(/^[|~*$^]?=/);
+ if (op) {
+ val = entities.quoted() || parserInput.$re(/^[0-9]+%/) || parserInput.$re(/^[\w-]+/) || entities.variableCurly();
+ }
+
+ expectChar(']');
+
+ return new(tree.Attribute)(key, op, val);
+ },
+
+ //
+ // The `block` rule is used by `ruleset` and `mixin.definition`.
+ // It's a wrapper around the `primary` rule, with added `{}`.
+ //
+ block: function () {
+ var content;
+ if (parserInput.$char('{') && (content = this.primary()) && parserInput.$char('}')) {
+ return content;
+ }
+ },
+
+ blockRuleset: function() {
+ var block = this.block();
+
+ if (block) {
+ block = new tree.Ruleset(null, block);
+ }
+ return block;
+ },
+
+ detachedRuleset: function() {
+ var blockRuleset = this.blockRuleset();
+ if (blockRuleset) {
+ return new tree.DetachedRuleset(blockRuleset);
+ }
+ },
+
+ //
+ // div, .class, body > p {...}
+ //
+ ruleset: function () {
+ var selectors, s, rules, debugInfo;
+
+ parserInput.save();
+
+ if (context.dumpLineNumbers) {
+ debugInfo = getDebugInfo(parserInput.i);
+ }
+
+ while (true) {
+ s = this.lessSelector();
+ if (!s) {
+ break;
+ }
+ if (selectors) {
+ selectors.push(s);
+ } else {
+ selectors = [ s ];
+ }
+ parserInput.commentStore.length = 0;
+ if (s.condition && selectors.length > 1) {
+ error("Guards are only currently allowed on a single selector.");
+ }
+ if (! parserInput.$char(',')) { break; }
+ if (s.condition) {
+ error("Guards are only currently allowed on a single selector.");
+ }
+ parserInput.commentStore.length = 0;
+ }
+
+ if (selectors && (rules = this.block())) {
+ parserInput.forget();
+ var ruleset = new(tree.Ruleset)(selectors, rules, context.strictImports);
+ if (context.dumpLineNumbers) {
+ ruleset.debugInfo = debugInfo;
+ }
+ return ruleset;
+ } else {
+ parserInput.restore();
+ }
+ },
+ rule: function (tryAnonymous) {
+ var name, value, startOfRule = parserInput.i, c = parserInput.currentChar(), important, merge, isVariable;
+
+ if (c === '.' || c === '#' || c === '&' || c === ':') { return; }
+
+ parserInput.save();
+
+ name = this.variable() || this.ruleProperty();
+ if (name) {
+ isVariable = typeof name === "string";
+
+ if (isVariable) {
+ value = this.detachedRuleset();
+ }
+
+ parserInput.commentStore.length = 0;
+ if (!value) {
+ // a name returned by this.ruleProperty() is always an array of the form:
+ // [string-1, ..., string-n, ""] or [string-1, ..., string-n, "+"]
+ // where each item is a tree.Keyword or tree.Variable
+ merge = !isVariable && name.length > 1 && name.pop().value;
+
+ // prefer to try to parse first if its a variable or we are compressing
+ // but always fallback on the other one
+ var tryValueFirst = !tryAnonymous && (context.compress || isVariable);
+
+ if (tryValueFirst) {
+ value = this.value();
+ }
+ if (!value) {
+ value = this.anonymousValue();
+ if (value) {
+ parserInput.forget();
+ // anonymous values absorb the end ';' which is required for them to work
+ return new (tree.Rule)(name, value, false, merge, startOfRule, fileInfo);
+ }
+ }
+ if (!tryValueFirst && !value) {
+ value = this.value();
+ }
+
+ important = this.important();
+ }
+
+ if (value && this.end()) {
+ parserInput.forget();
+ return new (tree.Rule)(name, value, important, merge, startOfRule, fileInfo);
+ } else {
+ parserInput.restore();
+ if (value && !tryAnonymous) {
+ return this.rule(true);
+ }
+ }
+ } else {
+ parserInput.forget();
+ }
+ },
+ anonymousValue: function () {
+ var match = parserInput.$re(/^([^@+\/'"*`(;{}-]*);/);
+ if (match) {
+ return new(tree.Anonymous)(match[1]);
+ }
+ },
+
+ //
+ // An @import directive
+ //
+ // @import "lib";
+ //
+ // Depending on our environment, 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 = parserInput.i;
+
+ var dir = parserInput.$re(/^@import?\s+/);
+
+ if (dir) {
+ var options = (dir ? this.importOptions() : null) || {};
+
+ if ((path = this.entities.quoted() || this.entities.url())) {
+ features = this.mediaFeatures();
+
+ if (!parserInput.$char(';')) {
+ parserInput.i = index;
+ error("missing semi-colon or unrecognised media features on import");
+ }
+ features = features && new(tree.Value)(features);
+ return new(tree.Import)(path, features, options, index, fileInfo);
+ }
+ else {
+ parserInput.i = index;
+ error("malformed import statement");
+ }
+ }
+ },
+
+ importOptions: function() {
+ var o, options = {}, optionName, value;
+
+ // list of options, surrounded by parens
+ if (! parserInput.$char('(')) { return null; }
+ do {
+ o = this.importOption();
+ if (o) {
+ optionName = o;
+ value = true;
+ switch(optionName) {
+ case "css":
+ optionName = "less";
+ value = false;
+ break;
+ case "once":
+ optionName = "multiple";
+ value = false;
+ break;
+ }
+ options[optionName] = value;
+ if (! parserInput.$char(',')) { break; }
+ }
+ } while (o);
+ expectChar(')');
+ return options;
+ },
+
+ importOption: function() {
+ var opt = parserInput.$re(/^(less|css|multiple|once|inline|reference|optional)/);
+ if (opt) {
+ return opt[1];
+ }
+ },
+
+ mediaFeature: function () {
+ var entities = this.entities, nodes = [], e, p;
+ parserInput.save();
+ do {
+ e = entities.keyword() || entities.variable();
+ if (e) {
+ nodes.push(e);
+ } else if (parserInput.$char('(')) {
+ p = this.property();
+ e = this.value();
+ if (parserInput.$char(')')) {
+ if (p && e) {
+ nodes.push(new(tree.Paren)(new(tree.Rule)(p, e, null, null, parserInput.i, fileInfo, true)));
+ } else if (e) {
+ nodes.push(new(tree.Paren)(e));
+ } else {
+ error("badly formed media feature definition");
+ }
+ } else {
+ error("Missing closing ')'", "Parse");
+ }
+ }
+ } while (e);
+
+ parserInput.forget();
+ if (nodes.length > 0) {
+ return new(tree.Expression)(nodes);
+ }
+ },
+
+ mediaFeatures: function () {
+ var entities = this.entities, features = [], e;
+ do {
+ e = this.mediaFeature();
+ if (e) {
+ features.push(e);
+ if (! parserInput.$char(',')) { break; }
+ } else {
+ e = entities.variable();
+ if (e) {
+ features.push(e);
+ if (! parserInput.$char(',')) { break; }
+ }
+ }
+ } while (e);
+
+ return features.length > 0 ? features : null;
+ },
+
+ media: function () {
+ var features, rules, media, debugInfo, index = parserInput.i;
+
+ if (context.dumpLineNumbers) {
+ debugInfo = getDebugInfo(index);
+ }
+
+ parserInput.save();
+
+ if (parserInput.$str("@media")) {
+ features = this.mediaFeatures();
+
+ rules = this.block();
+
+ if (!rules) {
+ error("media definitions require block statements after any features");
+ }
+
+ parserInput.forget();
+
+ media = new(tree.Media)(rules, features, index, fileInfo);
+ if (context.dumpLineNumbers) {
+ media.debugInfo = debugInfo;
+ }
+
+ return media;
+ }
+
+ parserInput.restore();
+ },
+
+ //
+ // A @plugin directive, used to import compiler extensions dynamically.
+ //
+ // @plugin "lib";
+ //
+ // Depending on our environment, 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.
+ //
+ plugin: function () {
+ var path,
+ index = parserInput.i,
+ dir = parserInput.$re(/^@plugin?\s+/);
+
+ if (dir) {
+ var options = { plugin : true };
+
+ if ((path = this.entities.quoted() || this.entities.url())) {
+
+ if (!parserInput.$char(';')) {
+ parserInput.i = index;
+ error("missing semi-colon on plugin");
+ }
+
+ return new(tree.Import)(path, null, options, index, fileInfo);
+ }
+ else {
+ parserInput.i = index;
+ error("malformed plugin statement");
+ }
+ }
+ },
+
+ //
+ // A CSS Directive
+ //
+ // @charset "utf-8";
+ //
+ directive: function () {
+ var index = parserInput.i, name, value, rules, nonVendorSpecificName,
+ hasIdentifier, hasExpression, hasUnknown, hasBlock = true, isRooted = true;
+
+ if (parserInput.currentChar() !== '@') { return; }
+
+ value = this['import']() || this.plugin() || this.media();
+ if (value) {
+ return value;
+ }
+
+ parserInput.save();
+
+ name = parserInput.$re(/^@[a-z-]+/);
+
+ if (!name) { return; }
+
+ nonVendorSpecificName = name;
+ if (name.charAt(1) == '-' && name.indexOf('-', 2) > 0) {
+ nonVendorSpecificName = "@" + name.slice(name.indexOf('-', 2) + 1);
+ }
+
+ switch(nonVendorSpecificName) {
+ case "@charset":
+ hasIdentifier = true;
+ hasBlock = false;
+ break;
+ case "@namespace":
+ hasExpression = true;
+ hasBlock = false;
+ break;
+ case "@keyframes":
+ case "@counter-style":
+ hasIdentifier = true;
+ break;
+ case "@document":
+ case "@supports":
+ hasUnknown = true;
+ isRooted = false;
+ break;
+ default:
+ hasUnknown = true;
+ break;
+ }
+
+ parserInput.commentStore.length = 0;
+
+ if (hasIdentifier) {
+ value = this.entity();
+ if (!value) {
+ error("expected " + name + " identifier");
+ }
+ } else if (hasExpression) {
+ value = this.expression();
+ if (!value) {
+ error("expected " + name + " expression");
+ }
+ } else if (hasUnknown) {
+ value = (parserInput.$re(/^[^{;]+/) || '').trim();
+ hasBlock = (parserInput.currentChar() == '{');
+ if (value) {
+ value = new(tree.Anonymous)(value);
+ }
+ }
+
+ if (hasBlock) {
+ rules = this.blockRuleset();
+ }
+
+ if (rules || (!hasBlock && value && parserInput.$char(';'))) {
+ parserInput.forget();
+ return new (tree.Directive)(name, value, rules, index, fileInfo,
+ context.dumpLineNumbers ? getDebugInfo(index) : null,
+ isRooted
+ );
+ }
+
+ parserInput.restore("directive options not recognised");
+ },
+
+ //
+ // A Value is a comma-delimited list of Expressions
+ //
+ // font-family: Baskerville, Georgia, serif;
+ //
+ // In a Rule, a Value represents everything after the `:`,
+ // and before the `;`.
+ //
+ value: function () {
+ var e, expressions = [];
+
+ do {
+ e = this.expression();
+ if (e) {
+ expressions.push(e);
+ if (! parserInput.$char(',')) { break; }
+ }
+ } while (e);
+
+ if (expressions.length > 0) {
+ return new(tree.Value)(expressions);
+ }
+ },
+ important: function () {
+ if (parserInput.currentChar() === '!') {
+ return parserInput.$re(/^! *important/);
+ }
+ },
+ sub: function () {
+ var a, e;
+
+ parserInput.save();
+ if (parserInput.$char('(')) {
+ a = this.addition();
+ if (a && parserInput.$char(')')) {
+ parserInput.forget();
+ e = new(tree.Expression)([a]);
+ e.parens = true;
+ return e;
+ }
+ parserInput.restore("Expected ')'");
+ return;
+ }
+ parserInput.restore();
+ },
+ multiplication: function () {
+ var m, a, op, operation, isSpaced;
+ m = this.operand();
+ if (m) {
+ isSpaced = parserInput.isWhitespace(-1);
+ while (true) {
+ if (parserInput.peek(/^\/[*\/]/)) {
+ break;
+ }
+
+ parserInput.save();
+
+ op = parserInput.$char('/') || parserInput.$char('*');
+
+ if (!op) { parserInput.forget(); break; }
+
+ a = this.operand();
+
+ if (!a) { parserInput.restore(); break; }
+ parserInput.forget();
+
+ m.parensInOp = true;
+ a.parensInOp = true;
+ operation = new(tree.Operation)(op, [operation || m, a], isSpaced);
+ isSpaced = parserInput.isWhitespace(-1);
+ }
+ return operation || m;
+ }
+ },
+ addition: function () {
+ var m, a, op, operation, isSpaced;
+ m = this.multiplication();
+ if (m) {
+ isSpaced = parserInput.isWhitespace(-1);
+ while (true) {
+ op = parserInput.$re(/^[-+]\s+/) || (!isSpaced && (parserInput.$char('+') || parserInput.$char('-')));
+ if (!op) {
+ break;
+ }
+ a = this.multiplication();
+ if (!a) {
+ break;
+ }
+
+ m.parensInOp = true;
+ a.parensInOp = true;
+ operation = new(tree.Operation)(op, [operation || m, a], isSpaced);
+ isSpaced = parserInput.isWhitespace(-1);
+ }
+ return operation || m;
+ }
+ },
+ conditions: function () {
+ var a, b, index = parserInput.i, condition;
+
+ a = this.condition();
+ if (a) {
+ while (true) {
+ if (!parserInput.peek(/^,\s*(not\s*)?\(/) || !parserInput.$char(',')) {
+ break;
+ }
+ b = this.condition();
+ if (!b) {
+ break;
+ }
+ condition = new(tree.Condition)('or', condition || a, b, index);
+ }
+ return condition || a;
+ }
+ },
+ condition: function () {
+ var result, logical, next;
+ function or() {
+ return parserInput.$str("or");
+ }
+
+ result = this.conditionAnd(this);
+ if (!result) {
+ return ;
+ }
+ logical = or();
+ if (logical) {
+ next = this.condition();
+ if (next) {
+ result = new(tree.Condition)(logical, result, next);
+ } else {
+ return ;
+ }
+ }
+ return result;
+ },
+ conditionAnd: function () {
+ var result, logical, next;
+ function insideCondition(me) {
+ return me.negatedCondition() || me.parenthesisCondition();
+ }
+ function and() {
+ return parserInput.$str("and");
+ }
+
+ result = insideCondition(this);
+ if (!result) {
+ return ;
+ }
+ logical = and();
+ if (logical) {
+ next = this.conditionAnd();
+ if (next) {
+ result = new(tree.Condition)(logical, result, next);
+ } else {
+ return ;
+ }
+ }
+ return result;
+ },
+ negatedCondition: function () {
+ if (parserInput.$str("not")) {
+ var result = this.parenthesisCondition();
+ if (result) {
+ result.negate = !result.negate;
+ }
+ return result;
+ }
+ },
+ parenthesisCondition: function () {
+ function tryConditionFollowedByParenthesis(me) {
+ var body;
+ parserInput.save();
+ body = me.condition();
+ if (!body) {
+ parserInput.restore();
+ return ;
+ }
+ if (!parserInput.$char(')')) {
+ parserInput.restore();
+ return ;
+ }
+ parserInput.forget();
+ return body;
+ }
+
+ var body;
+ parserInput.save();
+ if (!parserInput.$str("(")) {
+ parserInput.restore();
+ return ;
+ }
+ body = tryConditionFollowedByParenthesis(this);
+ if (body) {
+ parserInput.forget();
+ return body;
+ }
+
+ body = this.atomicCondition();
+ if (!body) {
+ parserInput.restore();
+ return ;
+ }
+ if (!parserInput.$char(')')) {
+ parserInput.restore("expected ')' got '" + parserInput.currentChar() + "'");
+ return ;
+ }
+ parserInput.forget();
+ return body;
+ },
+ atomicCondition: function () {
+ var entities = this.entities, index = parserInput.i, a, b, c, op;
+
+ a = this.addition() || entities.keyword() || entities.quoted();
+ if (a) {
+ if (parserInput.$char('>')) {
+ if (parserInput.$char('=')) {
+ op = ">=";
+ } else {
+ op = '>';
+ }
+ } else
+ if (parserInput.$char('<')) {
+ if (parserInput.$char('=')) {
+ op = "<=";
+ } else {
+ op = '<';
+ }
+ } else
+ if (parserInput.$char('=')) {
+ if (parserInput.$char('>')) {
+ op = "=>";
+ } else if (parserInput.$char('<')) {
+ op = '=<';
+ } else {
+ op = '=';
+ }
+ }
+ if (op) {
+ b = this.addition() || entities.keyword() || entities.quoted();
+ if (b) {
+ c = new(tree.Condition)(op, a, b, index, false);
+ } else {
+ error('expected expression');
+ }
+ } else {
+ c = new(tree.Condition)('=', a, new(tree.Keyword)('true'), index, false);
+ }
+ return c;
+ }
+ },
+
+ //
+ // An operand is anything that can be part of an operation,
+ // such as a Color, or a Variable
+ //
+ operand: function () {
+ var entities = this.entities, negate;
+
+ if (parserInput.peek(/^-[@\(]/)) {
+ negate = parserInput.$char('-');
+ }
+
+ var o = this.sub() || entities.dimension() ||
+ entities.color() || entities.variable() ||
+ entities.call() || entities.colorKeyword();
+
+ if (negate) {
+ o.parensInOp = true;
+ o = new(tree.Negative)(o);
+ }
+
+ return o;
+ },
+
+ //
+ // Expressions either represent mathematical operations,
+ // or white-space delimited Entities.
+ //
+ // 1px solid black
+ // @var * 2
+ //
+ expression: function () {
+ var entities = [], e, delim;
+
+ do {
+ e = this.comment();
+ if (e) {
+ entities.push(e);
+ continue;
+ }
+ e = this.addition() || this.entity();
+ if (e) {
+ entities.push(e);
+ // operations do not allow keyword "/" dimension (e.g. small/20px) so we support that here
+ if (!parserInput.peek(/^\/[\/*]/)) {
+ delim = parserInput.$char('/');
+ if (delim) {
+ entities.push(new(tree.Anonymous)(delim));
+ }
+ }
+ }
+ } while (e);
+ if (entities.length > 0) {
+ return new(tree.Expression)(entities);
+ }
+ },
+ property: function () {
+ var name = parserInput.$re(/^(\*?-?[_a-zA-Z0-9-]+)\s*:/);
+ if (name) {
+ return name[1];
+ }
+ },
+ ruleProperty: function () {
+ var name = [], index = [], s, k;
+
+ parserInput.save();
+
+ var simpleProperty = parserInput.$re(/^([_a-zA-Z0-9-]+)\s*:/);
+ if (simpleProperty) {
+ name = [new(tree.Keyword)(simpleProperty[1])];
+ parserInput.forget();
+ return name;
+ }
+
+ function match(re) {
+ var i = parserInput.i,
+ chunk = parserInput.$re(re);
+ if (chunk) {
+ index.push(i);
+ return name.push(chunk[1]);
+ }
+ }
+
+ match(/^(\*?)/);
+ while (true) {
+ if (!match(/^((?:[\w-]+)|(?:@\{[\w-]+\}))/)) {
+ break;
+ }
+ }
+
+ if ((name.length > 1) && match(/^((?:\+_|\+)?)\s*:/)) {
+ parserInput.forget();
+
+ // at last, we have the complete match now. move forward,
+ // convert name particles to tree objects and return:
+ if (name[0] === '') {
+ name.shift();
+ index.shift();
+ }
+ for (k = 0; k < name.length; k++) {
+ s = name[k];
+ name[k] = (s.charAt(0) !== '@') ?
+ new(tree.Keyword)(s) :
+ new(tree.Variable)('@' + s.slice(2, -1),
+ index[k], fileInfo);
+ }
+ return name;
+ }
+ parserInput.restore();
+ }
+ }
+ };
+};
+Parser.serializeVars = function(vars) {
+ var s = '';
+
+ for (var name in vars) {
+ if (Object.hasOwnProperty.call(vars, name)) {
+ var value = vars[name];
+ s += ((name[0] === '@') ? '' : '@') + name + ': ' + value +
+ ((String(value).slice(-1) === ';') ? '' : ';');
+ }
+ }
+
+ return s;
+};
+
+module.exports = Parser;
+
+},{"../less-error":32,"../tree":62,"../utils":83,"../visitors":87,"./parser-input":37}],39:[function(require,module,exports){
+/**
+ * Plugin Manager
+ */
+var PluginManager = function(less) {
+ this.less = less;
+ this.visitors = [];
+ this.preProcessors = [];
+ this.postProcessors = [];
+ this.installedPlugins = [];
+ this.fileManagers = [];
+};
+/**
+ * Adds all the plugins in the array
+ * @param {Array} plugins
+ */
+PluginManager.prototype.addPlugins = function(plugins) {
+ if (plugins) {
+ for (var i = 0; i < plugins.length; i++) {
+ this.addPlugin(plugins[i]);
+ }
+ }
+};
+/**
+ *
+ * @param plugin
+ */
+PluginManager.prototype.addPlugin = function(plugin) {
+ this.installedPlugins.push(plugin);
+ plugin.install(this.less, this);
+};
+/**
+ * Adds a visitor. The visitor object has options on itself to determine
+ * when it should run.
+ * @param visitor
+ */
+PluginManager.prototype.addVisitor = function(visitor) {
+ this.visitors.push(visitor);
+};
+/**
+ * Adds a pre processor object
+ * @param {object} preProcessor
+ * @param {number} priority - guidelines 1 = before import, 1000 = import, 2000 = after import
+ */
+PluginManager.prototype.addPreProcessor = function(preProcessor, priority) {
+ var indexToInsertAt;
+ for (indexToInsertAt = 0; indexToInsertAt < this.preProcessors.length; indexToInsertAt++) {
+ if (this.preProcessors[indexToInsertAt].priority >= priority) {
+ break;
+ }
+ }
+ this.preProcessors.splice(indexToInsertAt, 0, {preProcessor: preProcessor, priority: priority});
+};
+/**
+ * Adds a post processor object
+ * @param {object} postProcessor
+ * @param {number} priority - guidelines 1 = before compression, 1000 = compression, 2000 = after compression
+ */
+PluginManager.prototype.addPostProcessor = function(postProcessor, priority) {
+ var indexToInsertAt;
+ for (indexToInsertAt = 0; indexToInsertAt < this.postProcessors.length; indexToInsertAt++) {
+ if (this.postProcessors[indexToInsertAt].priority >= priority) {
+ break;
+ }
+ }
+ this.postProcessors.splice(indexToInsertAt, 0, {postProcessor: postProcessor, priority: priority});
+};
+/**
+ *
+ * @param manager
+ */
+PluginManager.prototype.addFileManager = function(manager) {
+ this.fileManagers.push(manager);
+};
+/**
+ *
+ * @returns {Array}
+ * @private
+ */
+PluginManager.prototype.getPreProcessors = function() {
+ var preProcessors = [];
+ for (var i = 0; i < this.preProcessors.length; i++) {
+ preProcessors.push(this.preProcessors[i].preProcessor);
+ }
+ return preProcessors;
+};
+/**
+ *
+ * @returns {Array}
+ * @private
+ */
+PluginManager.prototype.getPostProcessors = function() {
+ var postProcessors = [];
+ for (var i = 0; i < this.postProcessors.length; i++) {
+ postProcessors.push(this.postProcessors[i].postProcessor);
+ }
+ return postProcessors;
+};
+/**
+ *
+ * @returns {Array}
+ * @private
+ */
+PluginManager.prototype.getVisitors = function() {
+ return this.visitors;
+};
+/**
+ *
+ * @returns {Array}
+ * @private
+ */
+PluginManager.prototype.getFileManagers = function() {
+ return this.fileManagers;
+};
+module.exports = PluginManager;
+
+},{}],40:[function(require,module,exports){
+var LessError = require('../less-error'),
+ tree = require("../tree");
+
+var FunctionImporter = module.exports = function FunctionImporter(context, fileInfo) {
+ this.fileInfo = fileInfo;
+};
+
+FunctionImporter.prototype.eval = function(contents, callback) {
+ var loaded = {},
+ loader,
+ registry;
+
+ registry = {
+ add: function(name, func) {
+ loaded[name] = func;
+ },
+ addMultiple: function(functions) {
+ Object.keys(functions).forEach(function(name) {
+ loaded[name] = functions[name];
+ });
+ }
+ };
+
+ try {
+ loader = new Function("functions", "tree", "fileInfo", contents);
+ loader(registry, tree, this.fileInfo);
+ } catch(e) {
+ callback(new LessError({
+ message: "Plugin evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
+ filename: this.fileInfo.filename
+ }), null );
+ }
+
+ callback(null, { functions: loaded });
+};
+
+},{"../less-error":32,"../tree":62}],41:[function(require,module,exports){
+var PromiseConstructor;
+
+module.exports = function(environment, ParseTree, ImportManager) {
+ var render = function (input, options, callback) {
+ if (typeof options === 'function') {
+ callback = options;
+ options = {};
+ }
+
+ if (!callback) {
+ if (!PromiseConstructor) {
+ PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
+ }
+ var self = this;
+ return new PromiseConstructor(function (resolve, reject) {
+ render.call(self, input, options, function(err, output) {
+ if (err) {
+ reject(err);
+ } else {
+ resolve(output);
+ }
+ });
+ });
+ } else {
+ this.parse(input, options, function(err, root, imports, options) {
+ if (err) { return callback(err); }
+
+ var result;
+ try {
+ var parseTree = new ParseTree(root, imports);
+ result = parseTree.toCSS(options);
+ }
+ catch (err) { return callback(err); }
+
+ callback(null, result);
+ });
+ }
+ };
+
+ return render;
+};
+
+},{"promise":undefined}],42:[function(require,module,exports){
+module.exports = function (SourceMapOutput, environment) {
+
+ var SourceMapBuilder = function (options) {
+ this.options = options;
+ };
+
+ SourceMapBuilder.prototype.toCSS = function(rootNode, options, imports) {
+ var sourceMapOutput = new SourceMapOutput(
+ {
+ contentsIgnoredCharsMap: imports.contentsIgnoredChars,
+ rootNode: rootNode,
+ contentsMap: imports.contents,
+ sourceMapFilename: this.options.sourceMapFilename,
+ sourceMapURL: this.options.sourceMapURL,
+ outputFilename: this.options.sourceMapOutputFilename,
+ sourceMapBasepath: this.options.sourceMapBasepath,
+ sourceMapRootpath: this.options.sourceMapRootpath,
+ outputSourceFiles: this.options.outputSourceFiles,
+ sourceMapGenerator: this.options.sourceMapGenerator,
+ sourceMapFileInline: this.options.sourceMapFileInline
+ });
+
+ var css = sourceMapOutput.toCSS(options);
+ this.sourceMap = sourceMapOutput.sourceMap;
+ this.sourceMapURL = sourceMapOutput.sourceMapURL;
+ if (this.options.sourceMapInputFilename) {
+ this.sourceMapInputFilename = sourceMapOutput.normalizeFilename(this.options.sourceMapInputFilename);
+ }
+ return css + this.getCSSAppendage();
+ };
+
+ SourceMapBuilder.prototype.getCSSAppendage = function() {
+
+ var sourceMapURL = this.sourceMapURL;
+ if (this.options.sourceMapFileInline) {
+ if (this.sourceMap === undefined) {
+ return "";
+ }
+ sourceMapURL = "data:application/json;base64," + environment.encodeBase64(this.sourceMap);
+ }
+
+ if (sourceMapURL) {
+ return "/*# sourceMappingURL=" + sourceMapURL + " */";
+ }
+ return "";
+ };
+
+ SourceMapBuilder.prototype.getExternalSourceMap = function() {
+ return this.sourceMap;
+ };
+ SourceMapBuilder.prototype.setExternalSourceMap = function(sourceMap) {
+ this.sourceMap = sourceMap;
+ };
+
+ SourceMapBuilder.prototype.isInline = function() {
+ return this.options.sourceMapFileInline;
+ };
+ SourceMapBuilder.prototype.getSourceMapURL = function() {
+ return this.sourceMapURL;
+ };
+ SourceMapBuilder.prototype.getOutputFilename = function() {
+ return this.options.sourceMapOutputFilename;
+ };
+ SourceMapBuilder.prototype.getInputFilename = function() {
+ return this.sourceMapInputFilename;
+ };
+
+ return SourceMapBuilder;
+};
+
+},{}],43:[function(require,module,exports){
+module.exports = function (environment) {
+
+ var SourceMapOutput = function (options) {
+ this._css = [];
+ this._rootNode = options.rootNode;
+ this._contentsMap = options.contentsMap;
+ this._contentsIgnoredCharsMap = options.contentsIgnoredCharsMap;
+ if (options.sourceMapFilename) {
+ this._sourceMapFilename = options.sourceMapFilename.replace(/\\/g, '/');
+ }
+ this._outputFilename = options.outputFilename;
+ this.sourceMapURL = options.sourceMapURL;
+ if (options.sourceMapBasepath) {
+ this._sourceMapBasepath = options.sourceMapBasepath.replace(/\\/g, '/');
+ }
+ if (options.sourceMapRootpath) {
+ this._sourceMapRootpath = options.sourceMapRootpath.replace(/\\/g, '/');
+ if (this._sourceMapRootpath.charAt(this._sourceMapRootpath.length - 1) !== '/') {
+ this._sourceMapRootpath += '/';
+ }
+ } else {
+ this._sourceMapRootpath = "";
+ }
+ this._outputSourceFiles = options.outputSourceFiles;
+ this._sourceMapGeneratorConstructor = environment.getSourceMapGenerator();
+
+ this._lineNumber = 0;
+ this._column = 0;
+ };
+
+ SourceMapOutput.prototype.normalizeFilename = function(filename) {
+ filename = filename.replace(/\\/g, '/');
+
+ if (this._sourceMapBasepath && filename.indexOf(this._sourceMapBasepath) === 0) {
+ filename = filename.substring(this._sourceMapBasepath.length);
+ if (filename.charAt(0) === '\\' || filename.charAt(0) === '/') {
+ filename = filename.substring(1);
+ }
+ }
+ return (this._sourceMapRootpath || "") + filename;
+ };
+
+ SourceMapOutput.prototype.add = function(chunk, fileInfo, index, mapLines) {
+
+ //ignore adding empty strings
+ if (!chunk) {
+ return;
+ }
+
+ var lines,
+ sourceLines,
+ columns,
+ sourceColumns,
+ i;
+
+ if (fileInfo) {
+ var inputSource = this._contentsMap[fileInfo.filename];
+
+ // remove vars/banner added to the top of the file
+ if (this._contentsIgnoredCharsMap[fileInfo.filename]) {
+ // adjust the index
+ index -= this._contentsIgnoredCharsMap[fileInfo.filename];
+ if (index < 0) { index = 0; }
+ // adjust the source
+ inputSource = inputSource.slice(this._contentsIgnoredCharsMap[fileInfo.filename]);
+ }
+ inputSource = inputSource.substring(0, index);
+ sourceLines = inputSource.split("\n");
+ sourceColumns = sourceLines[sourceLines.length - 1];
+ }
+
+ lines = chunk.split("\n");
+ columns = lines[lines.length - 1];
+
+ if (fileInfo) {
+ if (!mapLines) {
+ this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + 1, column: this._column},
+ original: { line: sourceLines.length, column: sourceColumns.length},
+ source: this.normalizeFilename(fileInfo.filename)});
+ } else {
+ for (i = 0; i < lines.length; i++) {
+ this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + i + 1, column: i === 0 ? this._column : 0},
+ original: { line: sourceLines.length + i, column: i === 0 ? sourceColumns.length : 0},
+ source: this.normalizeFilename(fileInfo.filename)});
+ }
+ }
+ }
+
+ if (lines.length === 1) {
+ this._column += columns.length;
+ } else {
+ this._lineNumber += lines.length - 1;
+ this._column = columns.length;
+ }
+
+ this._css.push(chunk);
+ };
+
+ SourceMapOutput.prototype.isEmpty = function() {
+ return this._css.length === 0;
+ };
+
+ SourceMapOutput.prototype.toCSS = function(context) {
+ this._sourceMapGenerator = new this._sourceMapGeneratorConstructor({ file: this._outputFilename, sourceRoot: null });
+
+ if (this._outputSourceFiles) {
+ for (var filename in this._contentsMap) {
+ if (this._contentsMap.hasOwnProperty(filename)) {
+ var source = this._contentsMap[filename];
+ if (this._contentsIgnoredCharsMap[filename]) {
+ source = source.slice(this._contentsIgnoredCharsMap[filename]);
+ }
+ this._sourceMapGenerator.setSourceContent(this.normalizeFilename(filename), source);
+ }
+ }
+ }
+
+ this._rootNode.genCSS(context, this);
+
+ if (this._css.length > 0) {
+ var sourceMapURL,
+ sourceMapContent = JSON.stringify(this._sourceMapGenerator.toJSON());
+
+ if (this.sourceMapURL) {
+ sourceMapURL = this.sourceMapURL;
+ } else if (this._sourceMapFilename) {
+ sourceMapURL = this._sourceMapFilename;
+ }
+ this.sourceMapURL = sourceMapURL;
+
+ this.sourceMap = sourceMapContent;
+ }
+
+ return this._css.join('');
+ };
+
+ return SourceMapOutput;
+};
+
+},{}],44:[function(require,module,exports){
+var contexts = require("./contexts"),
+ visitor = require("./visitors"),
+ tree = require("./tree");
+
+module.exports = function(root, options) {
+ options = options || {};
+ var evaldRoot,
+ variables = options.variables,
+ evalEnv = new contexts.Eval(options);
+
+ //
+ // Allows setting variables with a hash, so:
+ //
+ // `{ color: new tree.Color('#f01') }` will become:
+ //
+ // new tree.Rule('@color',
+ // new tree.Value([
+ // new tree.Expression([
+ // new tree.Color('#f01')
+ // ])
+ // ])
+ // )
+ //
+ if (typeof variables === 'object' && !Array.isArray(variables)) {
+ variables = Object.keys(variables).map(function (k) {
+ var value = variables[k];
+
+ if (! (value instanceof tree.Value)) {
+ if (! (value instanceof tree.Expression)) {
+ value = new tree.Expression([value]);
+ }
+ value = new tree.Value([value]);
+ }
+ return new tree.Rule('@' + k, value, false, null, 0);
+ });
+ evalEnv.frames = [new tree.Ruleset(null, variables)];
+ }
+
+ var preEvalVisitors = [],
+ visitors = [
+ new visitor.JoinSelectorVisitor(),
+ new visitor.MarkVisibleSelectorsVisitor(true),
+ new visitor.ExtendVisitor(),
+ new visitor.ToCSSVisitor({compress: Boolean(options.compress)})
+ ], i;
+
+ if (options.pluginManager) {
+ var pluginVisitors = options.pluginManager.getVisitors();
+ for (i = 0; i < pluginVisitors.length; i++) {
+ var pluginVisitor = pluginVisitors[i];
+ if (pluginVisitor.isPreEvalVisitor) {
+ preEvalVisitors.push(pluginVisitor);
+ } else {
+ if (pluginVisitor.isPreVisitor) {
+ visitors.splice(0, 0, pluginVisitor);
+ } else {
+ visitors.push(pluginVisitor);
+ }
+ }
+ }
+ }
+
+ for (i = 0; i < preEvalVisitors.length; i++) {
+ preEvalVisitors[i].run(root);
+ }
+
+ evaldRoot = root.eval(evalEnv);
+
+ for (i = 0; i < visitors.length; i++) {
+ visitors[i].run(evaldRoot);
+ }
+
+ return evaldRoot;
+};
+
+},{"./contexts":11,"./tree":62,"./visitors":87}],45:[function(require,module,exports){
+var Node = require("./node");
+
+var Alpha = function (val) {
+ this.value = val;
+};
+Alpha.prototype = new Node();
+Alpha.prototype.type = "Alpha";
+
+Alpha.prototype.accept = function (visitor) {
+ this.value = visitor.visit(this.value);
+};
+Alpha.prototype.eval = function (context) {
+ if (this.value.eval) { return new Alpha(this.value.eval(context)); }
+ return this;
+};
+Alpha.prototype.genCSS = function (context, output) {
+ output.add("alpha(opacity=");
+
+ if (this.value.genCSS) {
+ this.value.genCSS(context, output);
+ } else {
+ output.add(this.value);
+ }
+
+ output.add(")");
+};
+
+module.exports = Alpha;
+
+},{"./node":70}],46:[function(require,module,exports){
+var Node = require("./node");
+
+var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike, visibilityInfo) {
+ this.value = value;
+ this.index = index;
+ this.mapLines = mapLines;
+ this.currentFileInfo = currentFileInfo;
+ this.rulesetLike = (typeof rulesetLike === 'undefined') ? false : rulesetLike;
+ this.allowRoot = true;
+ this.copyVisibilityInfo(visibilityInfo);
+};
+Anonymous.prototype = new Node();
+Anonymous.prototype.type = "Anonymous";
+Anonymous.prototype.eval = function () {
+ return new Anonymous(this.value, this.index, this.currentFileInfo, this.mapLines, this.rulesetLike, this.visibilityInfo());
+};
+Anonymous.prototype.compare = function (other) {
+ return other.toCSS && this.toCSS() === other.toCSS() ? 0 : undefined;
+};
+Anonymous.prototype.isRulesetLike = function() {
+ return this.rulesetLike;
+};
+Anonymous.prototype.genCSS = function (context, output) {
+ output.add(this.value, this.currentFileInfo, this.index, this.mapLines);
+};
+module.exports = Anonymous;
+
+},{"./node":70}],47:[function(require,module,exports){
+var Node = require("./node");
+
+var Assignment = function (key, val) {
+ this.key = key;
+ this.value = val;
+};
+
+Assignment.prototype = new Node();
+Assignment.prototype.type = "Assignment";
+Assignment.prototype.accept = function (visitor) {
+ this.value = visitor.visit(this.value);
+};
+Assignment.prototype.eval = function (context) {
+ if (this.value.eval) {
+ return new Assignment(this.key, this.value.eval(context));
+ }
+ return this;
+};
+Assignment.prototype.genCSS = function (context, output) {
+ output.add(this.key + '=');
+ if (this.value.genCSS) {
+ this.value.genCSS(context, output);
+ } else {
+ output.add(this.value);
+ }
+};
+module.exports = Assignment;
+
+},{"./node":70}],48:[function(require,module,exports){
+var Node = require("./node");
+
+var Attribute = function (key, op, value) {
+ this.key = key;
+ this.op = op;
+ this.value = value;
+};
+Attribute.prototype = new Node();
+Attribute.prototype.type = "Attribute";
+Attribute.prototype.eval = function (context) {
+ return new Attribute(this.key.eval ? this.key.eval(context) : this.key,
+ this.op, (this.value && this.value.eval) ? this.value.eval(context) : this.value);
+};
+Attribute.prototype.genCSS = function (context, output) {
+ output.add(this.toCSS(context));
+};
+Attribute.prototype.toCSS = function (context) {
+ var value = this.key.toCSS ? this.key.toCSS(context) : this.key;
+
+ if (this.op) {
+ value += this.op;
+ value += (this.value.toCSS ? this.value.toCSS(context) : this.value);
+ }
+
+ return '[' + value + ']';
+};
+module.exports = Attribute;
+
+},{"./node":70}],49:[function(require,module,exports){
+var Node = require("./node"),
+ FunctionCaller = require("../functions/function-caller");
+//
+// A function call node.
+//
+var Call = function (name, args, index, currentFileInfo) {
+ this.name = name;
+ this.args = args;
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+};
+Call.prototype = new Node();
+Call.prototype.type = "Call";
+Call.prototype.accept = function (visitor) {
+ if (this.args) {
+ this.args = visitor.visitArray(this.args);
+ }
+};
+//
+// When evaluating a function call,
+// we either find the function in the functionRegistry,
+// in which case we call it, passing the evaluated arguments,
+// if this returns null or we cannot find the function, we
+// simply print it out as it appeared originally [2].
+//
+// The 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.
+//
+Call.prototype.eval = function (context) {
+ var args = this.args.map(function (a) { return a.eval(context); }),
+ result, funcCaller = new FunctionCaller(this.name, context, this.index, this.currentFileInfo);
+
+ if (funcCaller.isValid()) {
+ try {
+ result = funcCaller.call(args);
+ } catch (e) {
+ throw { type: e.type || "Runtime",
+ message: "error evaluating function `" + this.name + "`" +
+ (e.message ? ': ' + e.message : ''),
+ index: this.index, filename: this.currentFileInfo.filename };
+ }
+
+ if (result != null) {
+ result.index = this.index;
+ result.currentFileInfo = this.currentFileInfo;
+ return result;
+ }
+ }
+
+ return new Call(this.name, args, this.index, this.currentFileInfo);
+};
+Call.prototype.genCSS = function (context, output) {
+ output.add(this.name + "(", this.currentFileInfo, this.index);
+
+ for (var i = 0; i < this.args.length; i++) {
+ this.args[i].genCSS(context, output);
+ if (i + 1 < this.args.length) {
+ output.add(", ");
+ }
+ }
+
+ output.add(")");
+};
+module.exports = Call;
+
+},{"../functions/function-caller":21,"./node":70}],50:[function(require,module,exports){
+var Node = require("./node"),
+ colors = require("../data/colors");
+
+//
+// RGB Colors - #ff0014, #eee
+//
+var Color = function (rgb, a, originalForm) {
+ //
+ // 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;
+ if (typeof originalForm !== 'undefined') {
+ this.value = originalForm;
+ }
+};
+
+Color.prototype = new Node();
+Color.prototype.type = "Color";
+
+function clamp(v, max) {
+ return Math.min(Math.max(v, 0), max);
+}
+
+function toHex(v) {
+ return '#' + v.map(function (c) {
+ c = clamp(Math.round(c), 255);
+ return (c < 16 ? '0' : '') + c.toString(16);
+ }).join('');
+}
+
+Color.prototype.luma = function () {
+ var r = this.rgb[0] / 255,
+ g = this.rgb[1] / 255,
+ b = this.rgb[2] / 255;
+
+ r = (r <= 0.03928) ? r / 12.92 : Math.pow(((r + 0.055) / 1.055), 2.4);
+ g = (g <= 0.03928) ? g / 12.92 : Math.pow(((g + 0.055) / 1.055), 2.4);
+ b = (b <= 0.03928) ? b / 12.92 : Math.pow(((b + 0.055) / 1.055), 2.4);
+
+ return 0.2126 * r + 0.7152 * g + 0.0722 * b;
+};
+Color.prototype.genCSS = function (context, output) {
+ output.add(this.toCSS(context));
+};
+Color.prototype.toCSS = function (context, doNotCompress) {
+ var compress = context && context.compress && !doNotCompress, color, alpha;
+
+ // `value` is set if this color was originally
+ // converted from a named color string so we need
+ // to respect this and try to output named color too.
+ if (this.value) {
+ return this.value;
+ }
+
+ // 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.
+ alpha = this.fround(context, this.alpha);
+ if (alpha < 1) {
+ return "rgba(" + this.rgb.map(function (c) {
+ return clamp(Math.round(c), 255);
+ }).concat(clamp(alpha, 1))
+ .join(',' + (compress ? '' : ' ')) + ")";
+ }
+
+ color = this.toRGB();
+
+ if (compress) {
+ var splitcolor = color.split('');
+
+ // Convert color to short format
+ if (splitcolor[1] === splitcolor[2] && splitcolor[3] === splitcolor[4] && splitcolor[5] === splitcolor[6]) {
+ color = '#' + splitcolor[1] + splitcolor[3] + splitcolor[5];
+ }
+ }
+
+ return color;
+};
+
+//
+// Operations have to be done per-channel, if not,
+// channels will spill onto each other. Once we have
+// our result, in the form of an integer triplet,
+// we create a new Color node to hold the result.
+//
+Color.prototype.operate = function (context, op, other) {
+ var rgb = [];
+ var alpha = this.alpha * (1 - other.alpha) + other.alpha;
+ for (var c = 0; c < 3; c++) {
+ rgb[c] = this._operate(context, op, this.rgb[c], other.rgb[c]);
+ }
+ return new Color(rgb, alpha);
+};
+Color.prototype.toRGB = function () {
+ return toHex(this.rgb);
+};
+Color.prototype.toHSL = function () {
+ var r = this.rgb[0] / 255,
+ g = this.rgb[1] / 255,
+ b = this.rgb[2] / 255,
+ a = this.alpha;
+
+ var max = Math.max(r, g, b), min = Math.min(r, g, b);
+ var h, s, l = (max + min) / 2, d = max - min;
+
+ if (max === min) {
+ h = s = 0;
+ } else {
+ s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+
+ switch (max) {
+ case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+ case g: h = (b - r) / d + 2; break;
+ case b: h = (r - g) / d + 4; break;
+ }
+ h /= 6;
+ }
+ return { h: h * 360, s: s, l: l, a: a };
+};
+//Adapted from http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
+Color.prototype.toHSV = function () {
+ var r = this.rgb[0] / 255,
+ g = this.rgb[1] / 255,
+ b = this.rgb[2] / 255,
+ a = this.alpha;
+
+ var max = Math.max(r, g, b), min = Math.min(r, g, b);
+ var h, s, v = max;
+
+ var d = max - min;
+ if (max === 0) {
+ s = 0;
+ } else {
+ s = d / max;
+ }
+
+ if (max === min) {
+ h = 0;
+ } else {
+ switch(max) {
+ case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+ case g: h = (b - r) / d + 2; break;
+ case b: h = (r - g) / d + 4; break;
+ }
+ h /= 6;
+ }
+ return { h: h * 360, s: s, v: v, a: a };
+};
+Color.prototype.toARGB = function () {
+ return toHex([this.alpha * 255].concat(this.rgb));
+};
+Color.prototype.compare = function (x) {
+ return (x.rgb &&
+ x.rgb[0] === this.rgb[0] &&
+ x.rgb[1] === this.rgb[1] &&
+ x.rgb[2] === this.rgb[2] &&
+ x.alpha === this.alpha) ? 0 : undefined;
+};
+
+Color.fromKeyword = function(keyword) {
+ var c, key = keyword.toLowerCase();
+ if (colors.hasOwnProperty(key)) {
+ c = new Color(colors[key].slice(1));
+ }
+ else if (key === "transparent") {
+ c = new Color([0, 0, 0], 0);
+ }
+
+ if (c) {
+ c.value = keyword;
+ return c;
+ }
+};
+module.exports = Color;
+
+},{"../data/colors":12,"./node":70}],51:[function(require,module,exports){
+var Node = require("./node");
+
+var Combinator = function (value) {
+ if (value === ' ') {
+ this.value = ' ';
+ this.emptyOrWhitespace = true;
+ } else {
+ this.value = value ? value.trim() : "";
+ this.emptyOrWhitespace = this.value === "";
+ }
+};
+Combinator.prototype = new Node();
+Combinator.prototype.type = "Combinator";
+var _noSpaceCombinators = {
+ '': true,
+ ' ': true,
+ '|': true
+};
+Combinator.prototype.genCSS = function (context, output) {
+ var spaceOrEmpty = (context.compress || _noSpaceCombinators[this.value]) ? '' : ' ';
+ output.add(spaceOrEmpty + this.value + spaceOrEmpty);
+};
+module.exports = Combinator;
+
+},{"./node":70}],52:[function(require,module,exports){
+var Node = require("./node"),
+ getDebugInfo = require("./debug-info");
+
+var Comment = function (value, isLineComment, index, currentFileInfo) {
+ this.value = value;
+ this.isLineComment = isLineComment;
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+ this.allowRoot = true;
+};
+Comment.prototype = new Node();
+Comment.prototype.type = "Comment";
+Comment.prototype.genCSS = function (context, output) {
+ if (this.debugInfo) {
+ output.add(getDebugInfo(context, this), this.currentFileInfo, this.index);
+ }
+ output.add(this.value);
+};
+Comment.prototype.isSilent = function(context) {
+ var isCompressed = context.compress && this.value[2] !== "!";
+ return this.isLineComment || isCompressed;
+};
+module.exports = Comment;
+
+},{"./debug-info":54,"./node":70}],53:[function(require,module,exports){
+var Node = require("./node");
+
+var Condition = function (op, l, r, i, negate) {
+ this.op = op.trim();
+ this.lvalue = l;
+ this.rvalue = r;
+ this.index = i;
+ this.negate = negate;
+};
+Condition.prototype = new Node();
+Condition.prototype.type = "Condition";
+Condition.prototype.accept = function (visitor) {
+ this.lvalue = visitor.visit(this.lvalue);
+ this.rvalue = visitor.visit(this.rvalue);
+};
+Condition.prototype.eval = function (context) {
+ var result = (function (op, a, b) {
+ switch (op) {
+ case 'and': return a && b;
+ case 'or': return a || b;
+ default:
+ switch (Node.compare(a, b)) {
+ case -1:
+ return op === '<' || op === '=<' || op === '<=';
+ case 0:
+ return op === '=' || op === '>=' || op === '=<' || op === '<=';
+ case 1:
+ return op === '>' || op === '>=';
+ default:
+ return false;
+ }
+ }
+ })(this.op, this.lvalue.eval(context), this.rvalue.eval(context));
+
+ return this.negate ? !result : result;
+};
+module.exports = Condition;
+
+},{"./node":70}],54:[function(require,module,exports){
+var debugInfo = function(context, ctx, lineSeparator) {
+ var result = "";
+ if (context.dumpLineNumbers && !context.compress) {
+ switch(context.dumpLineNumbers) {
+ case 'comments':
+ result = debugInfo.asComment(ctx);
+ break;
+ case 'mediaquery':
+ result = debugInfo.asMediaQuery(ctx);
+ break;
+ case 'all':
+ result = debugInfo.asComment(ctx) + (lineSeparator || "") + debugInfo.asMediaQuery(ctx);
+ break;
+ }
+ }
+ return result;
+};
+
+debugInfo.asComment = function(ctx) {
+ return '/* line ' + ctx.debugInfo.lineNumber + ', ' + ctx.debugInfo.fileName + ' */\n';
+};
+
+debugInfo.asMediaQuery = function(ctx) {
+ var filenameWithProtocol = ctx.debugInfo.fileName;
+ if (!/^[a-z]+:\/\//i.test(filenameWithProtocol)) {
+ filenameWithProtocol = 'file://' + filenameWithProtocol;
+ }
+ return '@media -sass-debug-info{filename{font-family:' +
+ filenameWithProtocol.replace(/([.:\/\\])/g, function (a) {
+ if (a == '\\') {
+ a = '\/';
+ }
+ return '\\' + a;
+ }) +
+ '}line{font-family:\\00003' + ctx.debugInfo.lineNumber + '}}\n';
+};
+
+module.exports = debugInfo;
+
+},{}],55:[function(require,module,exports){
+var Node = require("./node"),
+ contexts = require("../contexts");
+
+var DetachedRuleset = function (ruleset, frames) {
+ this.ruleset = ruleset;
+ this.frames = frames;
+};
+DetachedRuleset.prototype = new Node();
+DetachedRuleset.prototype.type = "DetachedRuleset";
+DetachedRuleset.prototype.evalFirst = true;
+DetachedRuleset.prototype.accept = function (visitor) {
+ this.ruleset = visitor.visit(this.ruleset);
+};
+DetachedRuleset.prototype.eval = function (context) {
+ var frames = this.frames || context.frames.slice(0);
+ return new DetachedRuleset(this.ruleset, frames);
+};
+DetachedRuleset.prototype.callEval = function (context) {
+ return this.ruleset.eval(this.frames ? new contexts.Eval(context, this.frames.concat(context.frames)) : context);
+};
+module.exports = DetachedRuleset;
+
+},{"../contexts":11,"./node":70}],56:[function(require,module,exports){
+var Node = require("./node"),
+ unitConversions = require("../data/unit-conversions"),
+ Unit = require("./unit"),
+ Color = require("./color");
+
+//
+// A number with a unit
+//
+var Dimension = function (value, unit) {
+ this.value = parseFloat(value);
+ this.unit = (unit && unit instanceof Unit) ? unit :
+ new Unit(unit ? [unit] : undefined);
+};
+
+Dimension.prototype = new Node();
+Dimension.prototype.type = "Dimension";
+Dimension.prototype.accept = function (visitor) {
+ this.unit = visitor.visit(this.unit);
+};
+Dimension.prototype.eval = function (context) {
+ return this;
+};
+Dimension.prototype.toColor = function () {
+ return new Color([this.value, this.value, this.value]);
+};
+Dimension.prototype.genCSS = function (context, output) {
+ if ((context && context.strictUnits) && !this.unit.isSingular()) {
+ throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: " + this.unit.toString());
+ }
+
+ var value = this.fround(context, this.value),
+ strValue = String(value);
+
+ if (value !== 0 && value < 0.000001 && value > -0.000001) {
+ // would be output 1e-6 etc.
+ strValue = value.toFixed(20).replace(/0+$/, "");
+ }
+
+ if (context && context.compress) {
+ // Zero values doesn't need a unit
+ if (value === 0 && this.unit.isLength()) {
+ output.add(strValue);
+ return;
+ }
+
+ // Float values doesn't need a leading zero
+ if (value > 0 && value < 1) {
+ strValue = (strValue).substr(1);
+ }
+ }
+
+ output.add(strValue);
+ this.unit.genCSS(context, output);
+};
+
+// In an operation between two Dimensions,
+// we default to the first Dimension's unit,
+// so `1px + 2` will yield `3px`.
+Dimension.prototype.operate = function (context, op, other) {
+ /*jshint noempty:false */
+ var value = this._operate(context, op, this.value, other.value),
+ unit = this.unit.clone();
+
+ if (op === '+' || op === '-') {
+ if (unit.numerator.length === 0 && unit.denominator.length === 0) {
+ unit = other.unit.clone();
+ if (this.unit.backupUnit) {
+ unit.backupUnit = this.unit.backupUnit;
+ }
+ } else if (other.unit.numerator.length === 0 && unit.denominator.length === 0) {
+ // do nothing
+ } else {
+ other = other.convertTo(this.unit.usedUnits());
+
+ if (context.strictUnits && other.unit.toString() !== unit.toString()) {
+ throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '" + unit.toString() +
+ "' and '" + other.unit.toString() + "'.");
+ }
+
+ value = this._operate(context, op, this.value, other.value);
+ }
+ } else if (op === '*') {
+ unit.numerator = unit.numerator.concat(other.unit.numerator).sort();
+ unit.denominator = unit.denominator.concat(other.unit.denominator).sort();
+ unit.cancel();
+ } else if (op === '/') {
+ unit.numerator = unit.numerator.concat(other.unit.denominator).sort();
+ unit.denominator = unit.denominator.concat(other.unit.numerator).sort();
+ unit.cancel();
+ }
+ return new Dimension(value, unit);
+};
+Dimension.prototype.compare = function (other) {
+ var a, b;
+
+ if (!(other instanceof Dimension)) {
+ return undefined;
+ }
+
+ if (this.unit.isEmpty() || other.unit.isEmpty()) {
+ a = this;
+ b = other;
+ } else {
+ a = this.unify();
+ b = other.unify();
+ if (a.unit.compare(b.unit) !== 0) {
+ return undefined;
+ }
+ }
+
+ return Node.numericCompare(a.value, b.value);
+};
+Dimension.prototype.unify = function () {
+ return this.convertTo({ length: 'px', duration: 's', angle: 'rad' });
+};
+Dimension.prototype.convertTo = function (conversions) {
+ var value = this.value, unit = this.unit.clone(),
+ i, groupName, group, targetUnit, derivedConversions = {}, applyUnit;
+
+ if (typeof conversions === 'string') {
+ for (i in unitConversions) {
+ if (unitConversions[i].hasOwnProperty(conversions)) {
+ derivedConversions = {};
+ derivedConversions[i] = conversions;
+ }
+ }
+ conversions = derivedConversions;
+ }
+ applyUnit = function (atomicUnit, denominator) {
+ /* jshint loopfunc:true */
+ if (group.hasOwnProperty(atomicUnit)) {
+ if (denominator) {
+ value = value / (group[atomicUnit] / group[targetUnit]);
+ } else {
+ value = value * (group[atomicUnit] / group[targetUnit]);
+ }
+
+ return targetUnit;
+ }
+
+ return atomicUnit;
+ };
+
+ for (groupName in conversions) {
+ if (conversions.hasOwnProperty(groupName)) {
+ targetUnit = conversions[groupName];
+ group = unitConversions[groupName];
+
+ unit.map(applyUnit);
+ }
+ }
+
+ unit.cancel();
+
+ return new Dimension(value, unit);
+};
+module.exports = Dimension;
+
+},{"../data/unit-conversions":14,"./color":50,"./node":70,"./unit":79}],57:[function(require,module,exports){
+var Node = require("./node"),
+ Selector = require("./selector"),
+ Ruleset = require("./ruleset");
+
+var Directive = function (name, value, rules, index, currentFileInfo, debugInfo, isRooted, visibilityInfo) {
+ var i;
+
+ this.name = name;
+ this.value = value;
+ if (rules) {
+ if (Array.isArray(rules)) {
+ this.rules = rules;
+ } else {
+ this.rules = [rules];
+ this.rules[0].selectors = (new Selector([], null, null, this.index, currentFileInfo)).createEmptySelectors();
+ }
+ for (i = 0; i < this.rules.length; i++) {
+ this.rules[i].allowImports = true;
+ }
+ }
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+ this.debugInfo = debugInfo;
+ this.isRooted = isRooted || false;
+ this.copyVisibilityInfo(visibilityInfo);
+ this.allowRoot = true;
+};
+
+Directive.prototype = new Node();
+Directive.prototype.type = "Directive";
+Directive.prototype.accept = function (visitor) {
+ var value = this.value, rules = this.rules;
+ if (rules) {
+ this.rules = visitor.visitArray(rules);
+ }
+ if (value) {
+ this.value = visitor.visit(value);
+ }
+};
+Directive.prototype.isRulesetLike = function() {
+ return this.rules || !this.isCharset();
+};
+Directive.prototype.isCharset = function() {
+ return "@charset" === this.name;
+};
+Directive.prototype.genCSS = function (context, output) {
+ var value = this.value, rules = this.rules;
+ output.add(this.name, this.currentFileInfo, this.index);
+ if (value) {
+ output.add(' ');
+ value.genCSS(context, output);
+ }
+ if (rules) {
+ this.outputRuleset(context, output, rules);
+ } else {
+ output.add(';');
+ }
+};
+Directive.prototype.eval = function (context) {
+ var mediaPathBackup, mediaBlocksBackup, value = this.value, rules = this.rules;
+
+ //media stored inside other directive should not bubble over it
+ //backpup media bubbling information
+ mediaPathBackup = context.mediaPath;
+ mediaBlocksBackup = context.mediaBlocks;
+ //deleted media bubbling information
+ context.mediaPath = [];
+ context.mediaBlocks = [];
+
+ if (value) {
+ value = value.eval(context);
+ }
+ if (rules) {
+ // assuming that there is only one rule at this point - that is how parser constructs the rule
+ rules = [rules[0].eval(context)];
+ rules[0].root = true;
+ }
+ //restore media bubbling information
+ context.mediaPath = mediaPathBackup;
+ context.mediaBlocks = mediaBlocksBackup;
+
+ return new Directive(this.name, value, rules,
+ this.index, this.currentFileInfo, this.debugInfo, this.isRooted, this.visibilityInfo());
+};
+Directive.prototype.variable = function (name) {
+ if (this.rules) {
+ // assuming that there is only one rule at this point - that is how parser constructs the rule
+ return Ruleset.prototype.variable.call(this.rules[0], name);
+ }
+};
+Directive.prototype.find = function () {
+ if (this.rules) {
+ // assuming that there is only one rule at this point - that is how parser constructs the rule
+ return Ruleset.prototype.find.apply(this.rules[0], arguments);
+ }
+};
+Directive.prototype.rulesets = function () {
+ if (this.rules) {
+ // assuming that there is only one rule at this point - that is how parser constructs the rule
+ return Ruleset.prototype.rulesets.apply(this.rules[0]);
+ }
+};
+Directive.prototype.outputRuleset = function (context, output, rules) {
+ var ruleCnt = rules.length, i;
+ context.tabLevel = (context.tabLevel | 0) + 1;
+
+ // Compressed
+ if (context.compress) {
+ output.add('{');
+ for (i = 0; i < ruleCnt; i++) {
+ rules[i].genCSS(context, output);
+ }
+ output.add('}');
+ context.tabLevel--;
+ return;
+ }
+
+ // Non-compressed
+ var tabSetStr = '\n' + Array(context.tabLevel).join(" "), tabRuleStr = tabSetStr + " ";
+ if (!ruleCnt) {
+ output.add(" {" + tabSetStr + '}');
+ } else {
+ output.add(" {" + tabRuleStr);
+ rules[0].genCSS(context, output);
+ for (i = 1; i < ruleCnt; i++) {
+ output.add(tabRuleStr);
+ rules[i].genCSS(context, output);
+ }
+ output.add(tabSetStr + '}');
+ }
+
+ context.tabLevel--;
+};
+module.exports = Directive;
+
+},{"./node":70,"./ruleset":76,"./selector":77}],58:[function(require,module,exports){
+var Node = require("./node"),
+ Paren = require("./paren"),
+ Combinator = require("./combinator");
+
+var Element = function (combinator, value, index, currentFileInfo, info) {
+ this.combinator = combinator instanceof Combinator ?
+ combinator : new Combinator(combinator);
+
+ if (typeof value === 'string') {
+ this.value = value.trim();
+ } else if (value) {
+ this.value = value;
+ } else {
+ this.value = "";
+ }
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+ this.copyVisibilityInfo(info);
+};
+Element.prototype = new Node();
+Element.prototype.type = "Element";
+Element.prototype.accept = function (visitor) {
+ var value = this.value;
+ this.combinator = visitor.visit(this.combinator);
+ if (typeof value === "object") {
+ this.value = visitor.visit(value);
+ }
+};
+Element.prototype.eval = function (context) {
+ return new Element(this.combinator,
+ this.value.eval ? this.value.eval(context) : this.value,
+ this.index,
+ this.currentFileInfo, this.visibilityInfo());
+};
+Element.prototype.clone = function () {
+ return new Element(this.combinator,
+ this.value,
+ this.index,
+ this.currentFileInfo, this.visibilityInfo());
+};
+Element.prototype.genCSS = function (context, output) {
+ output.add(this.toCSS(context), this.currentFileInfo, this.index);
+};
+Element.prototype.toCSS = function (context) {
+ context = context || {};
+ var value = this.value, firstSelector = context.firstSelector;
+ if (value instanceof Paren) {
+ // selector in parens should not be affected by outer selector
+ // flags (breaks only interpolated selectors - see #1973)
+ context.firstSelector = true;
+ }
+ value = value.toCSS ? value.toCSS(context) : value;
+ context.firstSelector = firstSelector;
+ if (value === '' && this.combinator.value.charAt(0) === '&') {
+ return '';
+ } else {
+ return this.combinator.toCSS(context) + value;
+ }
+};
+module.exports = Element;
+
+},{"./combinator":51,"./node":70,"./paren":72}],59:[function(require,module,exports){
+var Node = require("./node"),
+ Paren = require("./paren"),
+ Comment = require("./comment");
+
+var Expression = function (value) {
+ this.value = value;
+ if (!value) {
+ throw new Error("Expression requires an array parameter");
+ }
+};
+Expression.prototype = new Node();
+Expression.prototype.type = "Expression";
+Expression.prototype.accept = function (visitor) {
+ this.value = visitor.visitArray(this.value);
+};
+Expression.prototype.eval = function (context) {
+ var returnValue,
+ inParenthesis = this.parens && !this.parensInOp,
+ doubleParen = false;
+ if (inParenthesis) {
+ context.inParenthesis();
+ }
+ if (this.value.length > 1) {
+ returnValue = new Expression(this.value.map(function (e) {
+ return e.eval(context);
+ }));
+ } else if (this.value.length === 1) {
+ if (this.value[0].parens && !this.value[0].parensInOp) {
+ doubleParen = true;
+ }
+ returnValue = this.value[0].eval(context);
+ } else {
+ returnValue = this;
+ }
+ if (inParenthesis) {
+ context.outOfParenthesis();
+ }
+ if (this.parens && this.parensInOp && !(context.isMathOn()) && !doubleParen) {
+ returnValue = new Paren(returnValue);
+ }
+ return returnValue;
+};
+Expression.prototype.genCSS = function (context, output) {
+ for (var i = 0; i < this.value.length; i++) {
+ this.value[i].genCSS(context, output);
+ if (i + 1 < this.value.length) {
+ output.add(" ");
+ }
+ }
+};
+Expression.prototype.throwAwayComments = function () {
+ this.value = this.value.filter(function(v) {
+ return !(v instanceof Comment);
+ });
+};
+module.exports = Expression;
+
+},{"./comment":52,"./node":70,"./paren":72}],60:[function(require,module,exports){
+var Node = require("./node"),
+ Selector = require("./selector");
+
+var Extend = function Extend(selector, option, index, currentFileInfo, visibilityInfo) {
+ this.selector = selector;
+ this.option = option;
+ this.index = index;
+ this.object_id = Extend.next_id++;
+ this.parent_ids = [this.object_id];
+ this.currentFileInfo = currentFileInfo || {};
+ this.copyVisibilityInfo(visibilityInfo);
+ this.allowRoot = true;
+
+ switch(option) {
+ case "all":
+ this.allowBefore = true;
+ this.allowAfter = true;
+ break;
+ default:
+ this.allowBefore = false;
+ this.allowAfter = false;
+ break;
+ }
+};
+Extend.next_id = 0;
+
+Extend.prototype = new Node();
+Extend.prototype.type = "Extend";
+Extend.prototype.accept = function (visitor) {
+ this.selector = visitor.visit(this.selector);
+};
+Extend.prototype.eval = function (context) {
+ return new Extend(this.selector.eval(context), this.option, this.index, this.currentFileInfo, this.visibilityInfo());
+};
+Extend.prototype.clone = function (context) {
+ return new Extend(this.selector, this.option, this.index, this.currentFileInfo, this.visibilityInfo());
+};
+//it concatenates (joins) all selectors in selector array
+Extend.prototype.findSelfSelectors = function (selectors) {
+ var selfElements = [],
+ i,
+ selectorElements;
+
+ for (i = 0; i < selectors.length; i++) {
+ selectorElements = selectors[i].elements;
+ // duplicate the logic in genCSS function inside the selector node.
+ // future TODO - move both logics into the selector joiner visitor
+ if (i > 0 && selectorElements.length && selectorElements[0].combinator.value === "") {
+ selectorElements[0].combinator.value = ' ';
+ }
+ selfElements = selfElements.concat(selectors[i].elements);
+ }
+
+ this.selfSelectors = [new Selector(selfElements)];
+ this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo());
+};
+module.exports = Extend;
+
+},{"./node":70,"./selector":77}],61:[function(require,module,exports){
+var Node = require("./node"),
+ Media = require("./media"),
+ URL = require("./url"),
+ Quoted = require("./quoted"),
+ Ruleset = require("./ruleset"),
+ Anonymous = require("./anonymous");
+
+//
+// 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.
+//
+var Import = function (path, features, options, index, currentFileInfo, visibilityInfo) {
+ this.options = options;
+ this.index = index;
+ this.path = path;
+ this.features = features;
+ this.currentFileInfo = currentFileInfo;
+ this.allowRoot = true;
+
+ if (this.options.less !== undefined || this.options.inline) {
+ this.css = !this.options.less || this.options.inline;
+ } else {
+ var pathValue = this.getPath();
+ if (pathValue && /[#\.\&\?\/]css([\?;].*)?$/.test(pathValue)) {
+ this.css = true;
+ }
+ }
+ this.copyVisibilityInfo(visibilityInfo);
+};
+
+//
+// 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.
+//
+Import.prototype = new Node();
+Import.prototype.type = "Import";
+Import.prototype.accept = function (visitor) {
+ if (this.features) {
+ this.features = visitor.visit(this.features);
+ }
+ this.path = visitor.visit(this.path);
+ if (!this.options.plugin && !this.options.inline && this.root) {
+ this.root = visitor.visit(this.root);
+ }
+};
+Import.prototype.genCSS = function (context, output) {
+ if (this.css && this.path.currentFileInfo.reference === undefined) {
+ output.add("@import ", this.currentFileInfo, this.index);
+ this.path.genCSS(context, output);
+ if (this.features) {
+ output.add(" ");
+ this.features.genCSS(context, output);
+ }
+ output.add(';');
+ }
+};
+Import.prototype.getPath = function () {
+ return (this.path instanceof URL) ?
+ this.path.value.value : this.path.value;
+};
+Import.prototype.isVariableImport = function () {
+ var path = this.path;
+ if (path instanceof URL) {
+ path = path.value;
+ }
+ if (path instanceof Quoted) {
+ return path.containsVariables();
+ }
+
+ return true;
+};
+Import.prototype.evalForImport = function (context) {
+ var path = this.path;
+
+ if (path instanceof URL) {
+ path = path.value;
+ }
+
+ return new Import(path.eval(context), this.features, this.options, this.index, this.currentFileInfo, this.visibilityInfo());
+};
+Import.prototype.evalPath = function (context) {
+ var path = this.path.eval(context);
+ var rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
+
+ if (!(path instanceof URL)) {
+ if (rootpath) {
+ var pathValue = path.value;
+ // Add the base path if the import is relative
+ if (pathValue && context.isPathRelative(pathValue)) {
+ path.value = rootpath + pathValue;
+ }
+ }
+ path.value = context.normalizePath(path.value);
+ }
+
+ return path;
+};
+Import.prototype.eval = function (context) {
+ var result = this.doEval(context);
+ if (this.options.reference || this.blocksVisibility()) {
+ if (result.length || result.length === 0) {
+ result.forEach(function (node) {
+ node.addVisibilityBlock();
+ }
+ );
+ } else {
+ result.addVisibilityBlock();
+ }
+ }
+ return result;
+};
+Import.prototype.doEval = function (context) {
+ var ruleset, registry,
+ features = this.features && this.features.eval(context);
+
+ if (this.options.plugin) {
+ registry = context.frames[0] && context.frames[0].functionRegistry;
+ if ( registry && this.root && this.root.functions ) {
+ registry.addMultiple( this.root.functions );
+ }
+ return [];
+ }
+
+ if (this.skip) {
+ if (typeof this.skip === "function") {
+ this.skip = this.skip();
+ }
+ if (this.skip) {
+ return [];
+ }
+ }
+ if (this.options.inline) {
+ var contents = new Anonymous(this.root, 0,
+ {
+ filename: this.importedFilename,
+ reference: this.path.currentFileInfo && this.path.currentFileInfo.reference
+ }, true, true);
+
+ return this.features ? new Media([contents], this.features.value) : [contents];
+ } else if (this.css) {
+ var newImport = new Import(this.evalPath(context), features, this.options, this.index);
+ if (!newImport.css && this.error) {
+ throw this.error;
+ }
+ return newImport;
+ } else {
+ ruleset = new Ruleset(null, this.root.rules.slice(0));
+ ruleset.evalImports(context);
+
+ return this.features ? new Media(ruleset.rules, this.features.value) : ruleset.rules;
+ }
+};
+module.exports = Import;
+
+},{"./anonymous":46,"./media":66,"./node":70,"./quoted":73,"./ruleset":76,"./url":80}],62:[function(require,module,exports){
+var tree = {};
+
+tree.Node = require('./node');
+tree.Alpha = require('./alpha');
+tree.Color = require('./color');
+tree.Directive = require('./directive');
+tree.DetachedRuleset = require('./detached-ruleset');
+tree.Operation = require('./operation');
+tree.Dimension = require('./dimension');
+tree.Unit = require('./unit');
+tree.Keyword = require('./keyword');
+tree.Variable = require('./variable');
+tree.Ruleset = require('./ruleset');
+tree.Element = require('./element');
+tree.Attribute = require('./attribute');
+tree.Combinator = require('./combinator');
+tree.Selector = require('./selector');
+tree.Quoted = require('./quoted');
+tree.Expression = require('./expression');
+tree.Rule = require('./rule');
+tree.Call = require('./call');
+tree.URL = require('./url');
+tree.Import = require('./import');
+tree.mixin = {
+ Call: require('./mixin-call'),
+ Definition: require('./mixin-definition')
+};
+tree.Comment = require('./comment');
+tree.Anonymous = require('./anonymous');
+tree.Value = require('./value');
+tree.JavaScript = require('./javascript');
+tree.Assignment = require('./assignment');
+tree.Condition = require('./condition');
+tree.Paren = require('./paren');
+tree.Media = require('./media');
+tree.UnicodeDescriptor = require('./unicode-descriptor');
+tree.Negative = require('./negative');
+tree.Extend = require('./extend');
+tree.RulesetCall = require('./ruleset-call');
+
+module.exports = tree;
+
+},{"./alpha":45,"./anonymous":46,"./assignment":47,"./attribute":48,"./call":49,"./color":50,"./combinator":51,"./comment":52,"./condition":53,"./detached-ruleset":55,"./dimension":56,"./directive":57,"./element":58,"./expression":59,"./extend":60,"./import":61,"./javascript":63,"./keyword":65,"./media":66,"./mixin-call":67,"./mixin-definition":68,"./negative":69,"./node":70,"./operation":71,"./paren":72,"./quoted":73,"./rule":74,"./ruleset":76,"./ruleset-call":75,"./selector":77,"./unicode-descriptor":78,"./unit":79,"./url":80,"./value":81,"./variable":82}],63:[function(require,module,exports){
+var JsEvalNode = require("./js-eval-node"),
+ Dimension = require("./dimension"),
+ Quoted = require("./quoted"),
+ Anonymous = require("./anonymous");
+
+var JavaScript = function (string, escaped, index, currentFileInfo) {
+ this.escaped = escaped;
+ this.expression = string;
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+};
+JavaScript.prototype = new JsEvalNode();
+JavaScript.prototype.type = "JavaScript";
+JavaScript.prototype.eval = function(context) {
+ var result = this.evaluateJavaScript(this.expression, context);
+
+ if (typeof result === 'number') {
+ return new Dimension(result);
+ } else if (typeof result === 'string') {
+ return new Quoted('"' + result + '"', result, this.escaped, this.index);
+ } else if (Array.isArray(result)) {
+ return new Anonymous(result.join(', '));
+ } else {
+ return new Anonymous(result);
+ }
+};
+
+module.exports = JavaScript;
+
+},{"./anonymous":46,"./dimension":56,"./js-eval-node":64,"./quoted":73}],64:[function(require,module,exports){
+var Node = require("./node"),
+ Variable = require("./variable");
+
+var JsEvalNode = function() {
+};
+JsEvalNode.prototype = new Node();
+
+JsEvalNode.prototype.evaluateJavaScript = function (expression, context) {
+ var result,
+ that = this,
+ evalContext = {};
+
+ if (context.javascriptEnabled !== undefined && !context.javascriptEnabled) {
+ throw { message: "You are using JavaScript, which has been disabled.",
+ filename: this.currentFileInfo.filename,
+ index: this.index };
+ }
+
+ expression = expression.replace(/@\{([\w-]+)\}/g, function (_, name) {
+ return that.jsify(new Variable('@' + name, that.index, that.currentFileInfo).eval(context));
+ });
+
+ try {
+ expression = new Function('return (' + expression + ')');
+ } catch (e) {
+ throw { message: "JavaScript evaluation error: " + e.message + " from `" + expression + "`" ,
+ filename: this.currentFileInfo.filename,
+ index: this.index };
+ }
+
+ var variables = context.frames[0].variables();
+ for (var k in variables) {
+ if (variables.hasOwnProperty(k)) {
+ /*jshint loopfunc:true */
+ evalContext[k.slice(1)] = {
+ value: variables[k].value,
+ toJS: function () {
+ return this.value.eval(context).toCSS();
+ }
+ };
+ }
+ }
+
+ try {
+ result = expression.call(evalContext);
+ } catch (e) {
+ throw { message: "JavaScript evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
+ filename: this.currentFileInfo.filename,
+ index: this.index };
+ }
+ return result;
+};
+JsEvalNode.prototype.jsify = function (obj) {
+ if (Array.isArray(obj.value) && (obj.value.length > 1)) {
+ return '[' + obj.value.map(function (v) { return v.toCSS(); }).join(', ') + ']';
+ } else {
+ return obj.toCSS();
+ }
+};
+
+module.exports = JsEvalNode;
+
+},{"./node":70,"./variable":82}],65:[function(require,module,exports){
+var Node = require("./node");
+
+var Keyword = function (value) { this.value = value; };
+Keyword.prototype = new Node();
+Keyword.prototype.type = "Keyword";
+Keyword.prototype.genCSS = function (context, output) {
+ if (this.value === '%') { throw { type: "Syntax", message: "Invalid % without number" }; }
+ output.add(this.value);
+};
+
+Keyword.True = new Keyword('true');
+Keyword.False = new Keyword('false');
+
+module.exports = Keyword;
+
+},{"./node":70}],66:[function(require,module,exports){
+var Ruleset = require("./ruleset"),
+ Value = require("./value"),
+ Selector = require("./selector"),
+ Anonymous = require("./anonymous"),
+ Expression = require("./expression"),
+ Directive = require("./directive");
+
+var Media = function (value, features, index, currentFileInfo, visibilityInfo) {
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+
+ var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();
+
+ this.features = new Value(features);
+ this.rules = [new Ruleset(selectors, value)];
+ this.rules[0].allowImports = true;
+ this.copyVisibilityInfo(visibilityInfo);
+ this.allowRoot = true;
+};
+Media.prototype = new Directive();
+Media.prototype.type = "Media";
+Media.prototype.isRulesetLike = true;
+Media.prototype.accept = function (visitor) {
+ if (this.features) {
+ this.features = visitor.visit(this.features);
+ }
+ if (this.rules) {
+ this.rules = visitor.visitArray(this.rules);
+ }
+};
+Media.prototype.genCSS = function (context, output) {
+ output.add('@media ', this.currentFileInfo, this.index);
+ this.features.genCSS(context, output);
+ this.outputRuleset(context, output, this.rules);
+};
+Media.prototype.eval = function (context) {
+ if (!context.mediaBlocks) {
+ context.mediaBlocks = [];
+ context.mediaPath = [];
+ }
+
+ var media = new Media(null, [], this.index, this.currentFileInfo, this.visibilityInfo());
+ if (this.debugInfo) {
+ this.rules[0].debugInfo = this.debugInfo;
+ media.debugInfo = this.debugInfo;
+ }
+ var strictMathBypass = false;
+ if (!context.strictMath) {
+ strictMathBypass = true;
+ context.strictMath = true;
+ }
+ try {
+ media.features = this.features.eval(context);
+ }
+ finally {
+ if (strictMathBypass) {
+ context.strictMath = false;
+ }
+ }
+
+ context.mediaPath.push(media);
+ context.mediaBlocks.push(media);
+
+ this.rules[0].functionRegistry = context.frames[0].functionRegistry.inherit();
+ context.frames.unshift(this.rules[0]);
+ media.rules = [this.rules[0].eval(context)];
+ context.frames.shift();
+
+ context.mediaPath.pop();
+
+ return context.mediaPath.length === 0 ? media.evalTop(context) :
+ media.evalNested(context);
+};
+Media.prototype.evalTop = function (context) {
+ var result = this;
+
+ // Render all dependent Media blocks.
+ if (context.mediaBlocks.length > 1) {
+ var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();
+ result = new Ruleset(selectors, context.mediaBlocks);
+ result.multiMedia = true;
+ result.copyVisibilityInfo(this.visibilityInfo());
+ }
+
+ delete context.mediaBlocks;
+ delete context.mediaPath;
+
+ return result;
+};
+Media.prototype.evalNested = function (context) {
+ var i, value,
+ path = context.mediaPath.concat([this]);
+
+ // Extract the media-query conditions separated with `,` (OR).
+ for (i = 0; i < path.length; i++) {
+ value = path[i].features instanceof 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 Value(this.permute(path).map(function (path) {
+ path = path.map(function (fragment) {
+ return fragment.toCSS ? fragment : new Anonymous(fragment);
+ });
+
+ for (i = path.length - 1; i > 0; i--) {
+ path.splice(i, 0, new Anonymous("and"));
+ }
+
+ return new Expression(path);
+ }));
+
+ // Fake a tree-node that doesn't output anything.
+ return new Ruleset([], []);
+};
+Media.prototype.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;
+ }
+};
+Media.prototype.bubbleSelectors = function (selectors) {
+ if (!selectors) {
+ return;
+ }
+ this.rules = [new Ruleset(selectors.slice(0), [this.rules[0]])];
+};
+module.exports = Media;
+
+},{"./anonymous":46,"./directive":57,"./expression":59,"./ruleset":76,"./selector":77,"./value":81}],67:[function(require,module,exports){
+var Node = require("./node"),
+ Selector = require("./selector"),
+ MixinDefinition = require("./mixin-definition"),
+ defaultFunc = require("../functions/default");
+
+var MixinCall = function (elements, args, index, currentFileInfo, important) {
+ this.selector = new Selector(elements);
+ this.arguments = args || [];
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+ this.important = important;
+ this.allowRoot = true;
+};
+MixinCall.prototype = new Node();
+MixinCall.prototype.type = "MixinCall";
+MixinCall.prototype.accept = function (visitor) {
+ if (this.selector) {
+ this.selector = visitor.visit(this.selector);
+ }
+ if (this.arguments.length) {
+ this.arguments = visitor.visitArray(this.arguments);
+ }
+};
+MixinCall.prototype.eval = function (context) {
+ var mixins, mixin, mixinPath, args = [], arg, argValue,
+ rules = [], match = false, i, m, f, isRecursive, isOneFound,
+ candidates = [], candidate, conditionResult = [], defaultResult, defFalseEitherCase = -1,
+ defNone = 0, defTrue = 1, defFalse = 2, count, originalRuleset, noArgumentsFilter;
+
+ function calcDefGroup(mixin, mixinPath) {
+ var f, p, namespace;
+
+ for (f = 0; f < 2; f++) {
+ conditionResult[f] = true;
+ defaultFunc.value(f);
+ for (p = 0; p < mixinPath.length && conditionResult[f]; p++) {
+ namespace = mixinPath[p];
+ if (namespace.matchCondition) {
+ conditionResult[f] = conditionResult[f] && namespace.matchCondition(null, context);
+ }
+ }
+ if (mixin.matchCondition) {
+ conditionResult[f] = conditionResult[f] && mixin.matchCondition(args, context);
+ }
+ }
+ if (conditionResult[0] || conditionResult[1]) {
+ if (conditionResult[0] != conditionResult[1]) {
+ return conditionResult[1] ?
+ defTrue : defFalse;
+ }
+
+ return defNone;
+ }
+ return defFalseEitherCase;
+ }
+
+ for (i = 0; i < this.arguments.length; i++) {
+ arg = this.arguments[i];
+ argValue = arg.value.eval(context);
+ if (arg.expand && Array.isArray(argValue.value)) {
+ argValue = argValue.value;
+ for (m = 0; m < argValue.length; m++) {
+ args.push({value: argValue[m]});
+ }
+ } else {
+ args.push({name: arg.name, value: argValue});
+ }
+ }
+
+ noArgumentsFilter = function(rule) {return rule.matchArgs(null, context);};
+
+ for (i = 0; i < context.frames.length; i++) {
+ if ((mixins = context.frames[i].find(this.selector, null, noArgumentsFilter)).length > 0) {
+ isOneFound = true;
+
+ // To make `default()` function independent of definition order we have two "subpasses" here.
+ // At first we evaluate each guard *twice* (with `default() == true` and `default() == false`),
+ // and build candidate list with corresponding flags. Then, when we know all possible matches,
+ // we make a final decision.
+
+ for (m = 0; m < mixins.length; m++) {
+ mixin = mixins[m].rule;
+ mixinPath = mixins[m].path;
+ isRecursive = false;
+ for (f = 0; f < context.frames.length; f++) {
+ if ((!(mixin instanceof MixinDefinition)) && mixin === (context.frames[f].originalRuleset || context.frames[f])) {
+ isRecursive = true;
+ break;
+ }
+ }
+ if (isRecursive) {
+ continue;
+ }
+
+ if (mixin.matchArgs(args, context)) {
+ candidate = {mixin: mixin, group: calcDefGroup(mixin, mixinPath)};
+
+ if (candidate.group !== defFalseEitherCase) {
+ candidates.push(candidate);
+ }
+
+ match = true;
+ }
+ }
+
+ defaultFunc.reset();
+
+ count = [0, 0, 0];
+ for (m = 0; m < candidates.length; m++) {
+ count[candidates[m].group]++;
+ }
+
+ if (count[defNone] > 0) {
+ defaultResult = defFalse;
+ } else {
+ defaultResult = defTrue;
+ if ((count[defTrue] + count[defFalse]) > 1) {
+ throw { type: 'Runtime',
+ message: 'Ambiguous use of `default()` found when matching for `' + this.format(args) + '`',
+ index: this.index, filename: this.currentFileInfo.filename };
+ }
+ }
+
+ for (m = 0; m < candidates.length; m++) {
+ candidate = candidates[m].group;
+ if ((candidate === defNone) || (candidate === defaultResult)) {
+ try {
+ mixin = candidates[m].mixin;
+ if (!(mixin instanceof MixinDefinition)) {
+ originalRuleset = mixin.originalRuleset || mixin;
+ mixin = new MixinDefinition("", [], mixin.rules, null, false, null, originalRuleset.visibilityInfo());
+ mixin.originalRuleset = originalRuleset;
+ }
+ var newRules = mixin.evalCall(context, args, this.important).rules;
+ this._setVisibilityToReplacement(newRules);
+ Array.prototype.push.apply(rules, newRules);
+ } catch (e) {
+ throw { message: e.message, index: this.index, filename: this.currentFileInfo.filename, stack: e.stack };
+ }
+ }
+ }
+
+ if (match) {
+ return rules;
+ }
+ }
+ }
+ if (isOneFound) {
+ throw { type: 'Runtime',
+ message: 'No matching definition was found for `' + this.format(args) + '`',
+ index: this.index, filename: this.currentFileInfo.filename };
+ } else {
+ throw { type: 'Name',
+ message: this.selector.toCSS().trim() + " is undefined",
+ index: this.index, filename: this.currentFileInfo.filename };
+ }
+};
+
+MixinCall.prototype._setVisibilityToReplacement = function (replacement) {
+ var i, rule;
+ if (this.blocksVisibility()) {
+ for (i = 0; i < replacement.length; i++) {
+ rule = replacement[i];
+ rule.addVisibilityBlock();
+ }
+ }
+};
+MixinCall.prototype.format = function (args) {
+ return this.selector.toCSS().trim() + '(' +
+ (args ? args.map(function (a) {
+ var argValue = "";
+ if (a.name) {
+ argValue += a.name + ":";
+ }
+ if (a.value.toCSS) {
+ argValue += a.value.toCSS();
+ } else {
+ argValue += "???";
+ }
+ return argValue;
+ }).join(', ') : "") + ")";
+};
+module.exports = MixinCall;
+
+},{"../functions/default":20,"./mixin-definition":68,"./node":70,"./selector":77}],68:[function(require,module,exports){
+var Selector = require("./selector"),
+ Element = require("./element"),
+ Ruleset = require("./ruleset"),
+ Rule = require("./rule"),
+ Expression = require("./expression"),
+ contexts = require("../contexts");
+
+var Definition = function (name, params, rules, condition, variadic, frames, visibilityInfo) {
+ this.name = name;
+ this.selectors = [new Selector([new Element(null, name, this.index, this.currentFileInfo)])];
+ this.params = params;
+ this.condition = condition;
+ this.variadic = variadic;
+ this.arity = params.length;
+ this.rules = rules;
+ this._lookups = {};
+ var optionalParameters = [];
+ this.required = params.reduce(function (count, p) {
+ if (!p.name || (p.name && !p.value)) {
+ return count + 1;
+ }
+ else {
+ optionalParameters.push(p.name);
+ return count;
+ }
+ }, 0);
+ this.optionalParameters = optionalParameters;
+ this.frames = frames;
+ this.copyVisibilityInfo(visibilityInfo);
+ this.allowRoot = true;
+};
+Definition.prototype = new Ruleset();
+Definition.prototype.type = "MixinDefinition";
+Definition.prototype.evalFirst = true;
+Definition.prototype.accept = function (visitor) {
+ if (this.params && this.params.length) {
+ this.params = visitor.visitArray(this.params);
+ }
+ this.rules = visitor.visitArray(this.rules);
+ if (this.condition) {
+ this.condition = visitor.visit(this.condition);
+ }
+};
+Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArguments) {
+ /*jshint boss:true */
+ var frame = new Ruleset(null, null),
+ varargs, arg,
+ params = this.params.slice(0),
+ i, j, val, name, isNamedFound, argIndex, argsLength = 0;
+
+ if (mixinEnv.frames && mixinEnv.frames[0] && mixinEnv.frames[0].functionRegistry) {
+ frame.functionRegistry = mixinEnv.frames[0].functionRegistry.inherit();
+ }
+ mixinEnv = new contexts.Eval(mixinEnv, [frame].concat(mixinEnv.frames));
+
+ if (args) {
+ args = args.slice(0);
+ argsLength = args.length;
+
+ for (i = 0; i < argsLength; i++) {
+ arg = args[i];
+ if (name = (arg && arg.name)) {
+ isNamedFound = false;
+ for (j = 0; j < params.length; j++) {
+ if (!evaldArguments[j] && name === params[j].name) {
+ evaldArguments[j] = arg.value.eval(context);
+ frame.prependRule(new Rule(name, arg.value.eval(context)));
+ isNamedFound = true;
+ break;
+ }
+ }
+ if (isNamedFound) {
+ args.splice(i, 1);
+ i--;
+ continue;
+ } else {
+ throw { type: 'Runtime', message: "Named argument for " + this.name +
+ ' ' + args[i].name + ' not found' };
+ }
+ }
+ }
+ }
+ argIndex = 0;
+ for (i = 0; i < params.length; i++) {
+ if (evaldArguments[i]) { continue; }
+
+ arg = args && args[argIndex];
+
+ if (name = params[i].name) {
+ if (params[i].variadic) {
+ varargs = [];
+ for (j = argIndex; j < argsLength; j++) {
+ varargs.push(args[j].value.eval(context));
+ }
+ frame.prependRule(new Rule(name, new Expression(varargs).eval(context)));
+ } else {
+ val = arg && arg.value;
+ if (val) {
+ val = val.eval(context);
+ } else if (params[i].value) {
+ val = params[i].value.eval(mixinEnv);
+ frame.resetCache();
+ } else {
+ throw { type: 'Runtime', message: "wrong number of arguments for " + this.name +
+ ' (' + argsLength + ' for ' + this.arity + ')' };
+ }
+
+ frame.prependRule(new Rule(name, val));
+ evaldArguments[i] = val;
+ }
+ }
+
+ if (params[i].variadic && args) {
+ for (j = argIndex; j < argsLength; j++) {
+ evaldArguments[j] = args[j].value.eval(context);
+ }
+ }
+ argIndex++;
+ }
+
+ return frame;
+};
+Definition.prototype.makeImportant = function() {
+ var rules = !this.rules ? this.rules : this.rules.map(function (r) {
+ if (r.makeImportant) {
+ return r.makeImportant(true);
+ } else {
+ return r;
+ }
+ });
+ var result = new Definition(this.name, this.params, rules, this.condition, this.variadic, this.frames);
+ return result;
+};
+Definition.prototype.eval = function (context) {
+ return new Definition(this.name, this.params, this.rules, this.condition, this.variadic, this.frames || context.frames.slice(0));
+};
+Definition.prototype.evalCall = function (context, args, important) {
+ var _arguments = [],
+ mixinFrames = this.frames ? this.frames.concat(context.frames) : context.frames,
+ frame = this.evalParams(context, new contexts.Eval(context, mixinFrames), args, _arguments),
+ rules, ruleset;
+
+ frame.prependRule(new Rule('@arguments', new Expression(_arguments).eval(context)));
+
+ rules = this.rules.slice(0);
+
+ ruleset = new Ruleset(null, rules);
+ ruleset.originalRuleset = this;
+ ruleset = ruleset.eval(new contexts.Eval(context, [this, frame].concat(mixinFrames)));
+ if (important) {
+ ruleset = ruleset.makeImportant();
+ }
+ return ruleset;
+};
+Definition.prototype.matchCondition = function (args, context) {
+ if (this.condition && !this.condition.eval(
+ new contexts.Eval(context,
+ [this.evalParams(context, /* the parameter variables*/
+ new contexts.Eval(context, this.frames ? this.frames.concat(context.frames) : context.frames), args, [])]
+ .concat(this.frames || []) // the parent namespace/mixin frames
+ .concat(context.frames)))) { // the current environment frames
+ return false;
+ }
+ return true;
+};
+Definition.prototype.matchArgs = function (args, context) {
+ var allArgsCnt = (args && args.length) || 0, len, optionalParameters = this.optionalParameters;
+ var requiredArgsCnt = !args ? 0 : args.reduce(function (count, p) {
+ if (optionalParameters.indexOf(p.name) < 0) {
+ return count + 1;
+ } else {
+ return count;
+ }
+ }, 0);
+
+ if (! this.variadic) {
+ if (requiredArgsCnt < this.required) {
+ return false;
+ }
+ if (allArgsCnt > this.params.length) {
+ return false;
+ }
+ } else {
+ if (requiredArgsCnt < (this.required - 1)) {
+ return false;
+ }
+ }
+
+ // check patterns
+ len = Math.min(requiredArgsCnt, this.arity);
+
+ for (var i = 0; i < len; i++) {
+ if (!this.params[i].name && !this.params[i].variadic) {
+ if (args[i].value.eval(context).toCSS() != this.params[i].value.eval(context).toCSS()) {
+ return false;
+ }
+ }
+ }
+ return true;
+};
+module.exports = Definition;
+
+},{"../contexts":11,"./element":58,"./expression":59,"./rule":74,"./ruleset":76,"./selector":77}],69:[function(require,module,exports){
+var Node = require("./node"),
+ Operation = require("./operation"),
+ Dimension = require("./dimension");
+
+var Negative = function (node) {
+ this.value = node;
+};
+Negative.prototype = new Node();
+Negative.prototype.type = "Negative";
+Negative.prototype.genCSS = function (context, output) {
+ output.add('-');
+ this.value.genCSS(context, output);
+};
+Negative.prototype.eval = function (context) {
+ if (context.isMathOn()) {
+ return (new Operation('*', [new Dimension(-1), this.value])).eval(context);
+ }
+ return new Negative(this.value.eval(context));
+};
+module.exports = Negative;
+
+},{"./dimension":56,"./node":70,"./operation":71}],70:[function(require,module,exports){
+var Node = function() {
+};
+Node.prototype.toCSS = function (context) {
+ var strs = [];
+ this.genCSS(context, {
+ add: function(chunk, fileInfo, index) {
+ strs.push(chunk);
+ },
+ isEmpty: function () {
+ return strs.length === 0;
+ }
+ });
+ return strs.join('');
+};
+Node.prototype.genCSS = function (context, output) {
+ output.add(this.value);
+};
+Node.prototype.accept = function (visitor) {
+ this.value = visitor.visit(this.value);
+};
+Node.prototype.eval = function () { return this; };
+Node.prototype._operate = function (context, op, a, b) {
+ switch (op) {
+ case '+': return a + b;
+ case '-': return a - b;
+ case '*': return a * b;
+ case '/': return a / b;
+ }
+};
+Node.prototype.fround = function(context, value) {
+ var precision = context && context.numPrecision;
+ //add "epsilon" to ensure numbers like 1.000000005 (represented as 1.000000004999....) are properly rounded...
+ return (precision == null) ? value : Number((value + 2e-16).toFixed(precision));
+};
+Node.compare = function (a, b) {
+ /* returns:
+ -1: a < b
+ 0: a = b
+ 1: a > b
+ and *any* other value for a != b (e.g. undefined, NaN, -2 etc.) */
+
+ if ((a.compare) &&
+ // for "symmetric results" force toCSS-based comparison
+ // of Quoted or Anonymous if either value is one of those
+ !(b.type === "Quoted" || b.type === "Anonymous")) {
+ return a.compare(b);
+ } else if (b.compare) {
+ return -b.compare(a);
+ } else if (a.type !== b.type) {
+ return undefined;
+ }
+
+ a = a.value;
+ b = b.value;
+ if (!Array.isArray(a)) {
+ return a === b ? 0 : undefined;
+ }
+ if (a.length !== b.length) {
+ return undefined;
+ }
+ for (var i = 0; i < a.length; i++) {
+ if (Node.compare(a[i], b[i]) !== 0) {
+ return undefined;
+ }
+ }
+ return 0;
+};
+
+Node.numericCompare = function (a, b) {
+ return a < b ? -1
+ : a === b ? 0
+ : a > b ? 1 : undefined;
+};
+// Returns true if this node represents root of ast imported by reference
+Node.prototype.blocksVisibility = function () {
+ if (this.visibilityBlocks == null) {
+ this.visibilityBlocks = 0;
+ }
+ return this.visibilityBlocks !== 0;
+};
+Node.prototype.addVisibilityBlock = function () {
+ if (this.visibilityBlocks == null) {
+ this.visibilityBlocks = 0;
+ }
+ this.visibilityBlocks = this.visibilityBlocks + 1;
+};
+Node.prototype.removeVisibilityBlock = function () {
+ if (this.visibilityBlocks == null) {
+ this.visibilityBlocks = 0;
+ }
+ this.visibilityBlocks = this.visibilityBlocks - 1;
+};
+//Turns on node visibility - if called node will be shown in output regardless
+//of whether it comes from import by reference or not
+Node.prototype.ensureVisibility = function () {
+ this.nodeVisible = true;
+};
+//Turns off node visibility - if called node will NOT be shown in output regardless
+//of whether it comes from import by reference or not
+Node.prototype.ensureInvisibility = function () {
+ this.nodeVisible = false;
+};
+// return values:
+// false - the node must not be visible
+// true - the node must be visible
+// undefined or null - the node has the same visibility as its parent
+Node.prototype.isVisible = function () {
+ return this.nodeVisible;
+};
+Node.prototype.visibilityInfo = function() {
+ return {
+ visibilityBlocks: this.visibilityBlocks,
+ nodeVisible: this.nodeVisible
+ };
+};
+Node.prototype.copyVisibilityInfo = function(info) {
+ if (!info) {
+ return;
+ }
+ this.visibilityBlocks = info.visibilityBlocks;
+ this.nodeVisible = info.nodeVisible;
+};
+module.exports = Node;
+
+},{}],71:[function(require,module,exports){
+var Node = require("./node"),
+ Color = require("./color"),
+ Dimension = require("./dimension");
+
+var Operation = function (op, operands, isSpaced) {
+ this.op = op.trim();
+ this.operands = operands;
+ this.isSpaced = isSpaced;
+};
+Operation.prototype = new Node();
+Operation.prototype.type = "Operation";
+Operation.prototype.accept = function (visitor) {
+ this.operands = visitor.visit(this.operands);
+};
+Operation.prototype.eval = function (context) {
+ var a = this.operands[0].eval(context),
+ b = this.operands[1].eval(context);
+
+ if (context.isMathOn()) {
+ if (a instanceof Dimension && b instanceof Color) {
+ a = a.toColor();
+ }
+ if (b instanceof Dimension && a instanceof Color) {
+ b = b.toColor();
+ }
+ if (!a.operate) {
+ throw { type: "Operation",
+ message: "Operation on an invalid type" };
+ }
+
+ return a.operate(context, this.op, b);
+ } else {
+ return new Operation(this.op, [a, b], this.isSpaced);
+ }
+};
+Operation.prototype.genCSS = function (context, output) {
+ this.operands[0].genCSS(context, output);
+ if (this.isSpaced) {
+ output.add(" ");
+ }
+ output.add(this.op);
+ if (this.isSpaced) {
+ output.add(" ");
+ }
+ this.operands[1].genCSS(context, output);
+};
+
+module.exports = Operation;
+
+},{"./color":50,"./dimension":56,"./node":70}],72:[function(require,module,exports){
+var Node = require("./node");
+
+var Paren = function (node) {
+ this.value = node;
+};
+Paren.prototype = new Node();
+Paren.prototype.type = "Paren";
+Paren.prototype.genCSS = function (context, output) {
+ output.add('(');
+ this.value.genCSS(context, output);
+ output.add(')');
+};
+Paren.prototype.eval = function (context) {
+ return new Paren(this.value.eval(context));
+};
+module.exports = Paren;
+
+},{"./node":70}],73:[function(require,module,exports){
+var Node = require("./node"),
+ JsEvalNode = require("./js-eval-node"),
+ Variable = require("./variable");
+
+var Quoted = function (str, content, escaped, index, currentFileInfo) {
+ this.escaped = (escaped == null) ? true : escaped;
+ this.value = content || '';
+ this.quote = str.charAt(0);
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+};
+Quoted.prototype = new JsEvalNode();
+Quoted.prototype.type = "Quoted";
+Quoted.prototype.genCSS = function (context, output) {
+ if (!this.escaped) {
+ output.add(this.quote, this.currentFileInfo, this.index);
+ }
+ output.add(this.value);
+ if (!this.escaped) {
+ output.add(this.quote);
+ }
+};
+Quoted.prototype.containsVariables = function() {
+ return this.value.match(/(`([^`]+)`)|@\{([\w-]+)\}/);
+};
+Quoted.prototype.eval = function (context) {
+ var that = this, value = this.value;
+ var javascriptReplacement = function (_, exp) {
+ return String(that.evaluateJavaScript(exp, context));
+ };
+ var interpolationReplacement = function (_, name) {
+ var v = new Variable('@' + name, that.index, that.currentFileInfo).eval(context, true);
+ return (v instanceof Quoted) ? v.value : v.toCSS();
+ };
+ function iterativeReplace(value, regexp, replacementFnc) {
+ var evaluatedValue = value;
+ do {
+ value = evaluatedValue;
+ evaluatedValue = value.replace(regexp, replacementFnc);
+ } while (value !== evaluatedValue);
+ return evaluatedValue;
+ }
+ value = iterativeReplace(value, /`([^`]+)`/g, javascriptReplacement);
+ value = iterativeReplace(value, /@\{([\w-]+)\}/g, interpolationReplacement);
+ return new Quoted(this.quote + value + this.quote, value, this.escaped, this.index, this.currentFileInfo);
+};
+Quoted.prototype.compare = function (other) {
+ // when comparing quoted strings allow the quote to differ
+ if (other.type === "Quoted" && !this.escaped && !other.escaped) {
+ return Node.numericCompare(this.value, other.value);
+ } else {
+ return other.toCSS && this.toCSS() === other.toCSS() ? 0 : undefined;
+ }
+};
+module.exports = Quoted;
+
+},{"./js-eval-node":64,"./node":70,"./variable":82}],74:[function(require,module,exports){
+var Node = require("./node"),
+ Value = require("./value"),
+ Keyword = require("./keyword");
+
+var Rule = function (name, value, important, merge, index, currentFileInfo, inline, variable) {
+ this.name = name;
+ this.value = (value instanceof Node) ? value : new Value([value]); //value instanceof tree.Value || value instanceof tree.Ruleset ??
+ this.important = important ? ' ' + important.trim() : '';
+ this.merge = merge;
+ this.index = index;
+ this.currentFileInfo = currentFileInfo;
+ this.inline = inline || false;
+ this.variable = (variable !== undefined) ? variable
+ : (name.charAt && (name.charAt(0) === '@'));
+ this.allowRoot = true;
+};
+
+function evalName(context, name) {
+ var value = "", i, n = name.length,
+ output = {add: function (s) {value += s;}};
+ for (i = 0; i < n; i++) {
+ name[i].eval(context).genCSS(context, output);
+ }
+ return value;
+}
+
+Rule.prototype = new Node();
+Rule.prototype.type = "Rule";
+Rule.prototype.genCSS = function (context, output) {
+ output.add(this.name + (context.compress ? ':' : ': '), this.currentFileInfo, this.index);
+ try {
+ this.value.genCSS(context, output);
+ }
+ catch(e) {
+ e.index = this.index;
+ e.filename = this.currentFileInfo.filename;
+ throw e;
+ }
+ output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? "" : ";"), this.currentFileInfo, this.index);
+};
+Rule.prototype.eval = function (context) {
+ var strictMathBypass = false, name = this.name, evaldValue, variable = this.variable;
+ if (typeof name !== "string") {
+ // expand 'primitive' name directly to get
+ // things faster (~10% for benchmark.less):
+ name = (name.length === 1) && (name[0] instanceof Keyword) ?
+ name[0].value : evalName(context, name);
+ variable = false; // never treat expanded interpolation as new variable name
+ }
+ if (name === "font" && !context.strictMath) {
+ strictMathBypass = true;
+ context.strictMath = true;
+ }
+ try {
+ context.importantScope.push({});
+ evaldValue = this.value.eval(context);
+
+ if (!this.variable && evaldValue.type === "DetachedRuleset") {
+ throw { message: "Rulesets cannot be evaluated on a property.",
+ index: this.index, filename: this.currentFileInfo.filename };
+ }
+ var important = this.important,
+ importantResult = context.importantScope.pop();
+ if (!important && importantResult.important) {
+ important = importantResult.important;
+ }
+
+ return new Rule(name,
+ evaldValue,
+ important,
+ this.merge,
+ this.index, this.currentFileInfo, this.inline,
+ variable);
+ }
+ catch(e) {
+ if (typeof e.index !== 'number') {
+ e.index = this.index;
+ e.filename = this.currentFileInfo.filename;
+ }
+ throw e;
+ }
+ finally {
+ if (strictMathBypass) {
+ context.strictMath = false;
+ }
+ }
+};
+Rule.prototype.makeImportant = function () {
+ return new Rule(this.name,
+ this.value,
+ "!important",
+ this.merge,
+ this.index, this.currentFileInfo, this.inline);
+};
+
+module.exports = Rule;
+},{"./keyword":65,"./node":70,"./value":81}],75:[function(require,module,exports){
+var Node = require("./node"),
+ Variable = require("./variable");
+
+var RulesetCall = function (variable) {
+ this.variable = variable;
+ this.allowRoot = true;
+};
+RulesetCall.prototype = new Node();
+RulesetCall.prototype.type = "RulesetCall";
+RulesetCall.prototype.eval = function (context) {
+ var detachedRuleset = new Variable(this.variable).eval(context);
+ return detachedRuleset.callEval(context);
+};
+module.exports = RulesetCall;
+
+},{"./node":70,"./variable":82}],76:[function(require,module,exports){
+var Node = require("./node"),
+ Rule = require("./rule"),
+ Selector = require("./selector"),
+ Element = require("./element"),
+ Paren = require("./paren"),
+ contexts = require("../contexts"),
+ globalFunctionRegistry = require("../functions/function-registry"),
+ defaultFunc = require("../functions/default"),
+ getDebugInfo = require("./debug-info");
+
+var Ruleset = function (selectors, rules, strictImports, visibilityInfo) {
+ this.selectors = selectors;
+ this.rules = rules;
+ this._lookups = {};
+ this.strictImports = strictImports;
+ this.copyVisibilityInfo(visibilityInfo);
+ this.allowRoot = true;
+};
+Ruleset.prototype = new Node();
+Ruleset.prototype.type = "Ruleset";
+Ruleset.prototype.isRuleset = true;
+Ruleset.prototype.isRulesetLike = true;
+Ruleset.prototype.accept = function (visitor) {
+ if (this.paths) {
+ this.paths = visitor.visitArray(this.paths, true);
+ } else if (this.selectors) {
+ this.selectors = visitor.visitArray(this.selectors);
+ }
+ if (this.rules && this.rules.length) {
+ this.rules = visitor.visitArray(this.rules);
+ }
+};
+Ruleset.prototype.eval = function (context) {
+ var thisSelectors = this.selectors, selectors,
+ selCnt, selector, i, hasOnePassingSelector = false;
+
+ if (thisSelectors && (selCnt = thisSelectors.length)) {
+ selectors = [];
+ defaultFunc.error({
+ type: "Syntax",
+ message: "it is currently only allowed in parametric mixin guards,"
+ });
+ for (i = 0; i < selCnt; i++) {
+ selector = thisSelectors[i].eval(context);
+ selectors.push(selector);
+ if (selector.evaldCondition) {
+ hasOnePassingSelector = true;
+ }
+ }
+ defaultFunc.reset();
+ } else {
+ hasOnePassingSelector = true;
+ }
+
+ var rules = this.rules ? this.rules.slice(0) : null,
+ ruleset = new Ruleset(selectors, rules, this.strictImports, this.visibilityInfo()),
+ rule, subRule;
+
+ ruleset.originalRuleset = this;
+ ruleset.root = this.root;
+ ruleset.firstRoot = this.firstRoot;
+ ruleset.allowImports = this.allowImports;
+
+ if (this.debugInfo) {
+ ruleset.debugInfo = this.debugInfo;
+ }
+
+ if (!hasOnePassingSelector) {
+ rules.length = 0;
+ }
+
+ // inherit a function registry from the frames stack when possible;
+ // otherwise from the global registry
+ ruleset.functionRegistry = (function (frames) {
+ var i = 0,
+ n = frames.length,
+ found;
+ for ( ; i !== n ; ++i ) {
+ found = frames[ i ].functionRegistry;
+ if ( found ) { return found; }
+ }
+ return globalFunctionRegistry;
+ }(context.frames)).inherit();
+
+ // push the current ruleset to the frames stack
+ var ctxFrames = context.frames;
+ ctxFrames.unshift(ruleset);
+
+ // currrent selectors
+ var ctxSelectors = context.selectors;
+ if (!ctxSelectors) {
+ context.selectors = ctxSelectors = [];
+ }
+ ctxSelectors.unshift(this.selectors);
+
+ // Evaluate imports
+ if (ruleset.root || ruleset.allowImports || !ruleset.strictImports) {
+ ruleset.evalImports(context);
+ }
+
+ // Store the frames around mixin definitions,
+ // so they can be evaluated like closures when the time comes.
+ var rsRules = ruleset.rules, rsRuleCnt = rsRules ? rsRules.length : 0;
+ for (i = 0; i < rsRuleCnt; i++) {
+ if (rsRules[i].evalFirst) {
+ rsRules[i] = rsRules[i].eval(context);
+ }
+ }
+
+ var mediaBlockCount = (context.mediaBlocks && context.mediaBlocks.length) || 0;
+
+ // Evaluate mixin calls.
+ for (i = 0; i < rsRuleCnt; i++) {
+ if (rsRules[i].type === "MixinCall") {
+ /*jshint loopfunc:true */
+ rules = rsRules[i].eval(context).filter(function(r) {
+ if ((r instanceof Rule) && r.variable) {
+ // do not pollute the scope if the variable is
+ // already there. consider returning false here
+ // but we need a way to "return" variable from mixins
+ return !(ruleset.variable(r.name));
+ }
+ return true;
+ });
+ rsRules.splice.apply(rsRules, [i, 1].concat(rules));
+ rsRuleCnt += rules.length - 1;
+ i += rules.length - 1;
+ ruleset.resetCache();
+ } else if (rsRules[i].type === "RulesetCall") {
+ /*jshint loopfunc:true */
+ rules = rsRules[i].eval(context).rules.filter(function(r) {
+ if ((r instanceof Rule) && r.variable) {
+ // do not pollute the scope at all
+ return false;
+ }
+ return true;
+ });
+ rsRules.splice.apply(rsRules, [i, 1].concat(rules));
+ rsRuleCnt += rules.length - 1;
+ i += rules.length - 1;
+ ruleset.resetCache();
+ }
+ }
+
+ // Evaluate everything else
+ for (i = 0; i < rsRules.length; i++) {
+ rule = rsRules[i];
+ if (!rule.evalFirst) {
+ rsRules[i] = rule = rule.eval ? rule.eval(context) : rule;
+ }
+ }
+
+ // Evaluate everything else
+ for (i = 0; i < rsRules.length; i++) {
+ rule = rsRules[i];
+ // for rulesets, check if it is a css guard and can be removed
+ if (rule instanceof Ruleset && rule.selectors && rule.selectors.length === 1) {
+ // check if it can be folded in (e.g. & where)
+ if (rule.selectors[0].isJustParentSelector()) {
+ rsRules.splice(i--, 1);
+
+ for (var j = 0; j < rule.rules.length; j++) {
+ subRule = rule.rules[j];
+ subRule.copyVisibilityInfo(rule.visibilityInfo());
+ if (!(subRule instanceof Rule) || !subRule.variable) {
+ rsRules.splice(++i, 0, subRule);
+ }
+ }
+ }
+ }
+ }
+
+ // Pop the stack
+ ctxFrames.shift();
+ ctxSelectors.shift();
+
+ if (context.mediaBlocks) {
+ for (i = mediaBlockCount; i < context.mediaBlocks.length; i++) {
+ context.mediaBlocks[i].bubbleSelectors(selectors);
+ }
+ }
+
+ return ruleset;
+};
+Ruleset.prototype.evalImports = function(context) {
+ var rules = this.rules, i, importRules;
+ if (!rules) { return; }
+
+ for (i = 0; i < rules.length; i++) {
+ if (rules[i].type === "Import") {
+ importRules = rules[i].eval(context);
+ if (importRules && (importRules.length || importRules.length === 0)) {
+ rules.splice.apply(rules, [i, 1].concat(importRules));
+ i+= importRules.length - 1;
+ } else {
+ rules.splice(i, 1, importRules);
+ }
+ this.resetCache();
+ }
+ }
+};
+Ruleset.prototype.makeImportant = function() {
+ var result = new Ruleset(this.selectors, this.rules.map(function (r) {
+ if (r.makeImportant) {
+ return r.makeImportant();
+ } else {
+ return r;
+ }
+ }), this.strictImports, this.visibilityInfo());
+
+ return result;
+};
+Ruleset.prototype.matchArgs = function (args) {
+ return !args || args.length === 0;
+};
+// lets you call a css selector with a guard
+Ruleset.prototype.matchCondition = function (args, context) {
+ var lastSelector = this.selectors[this.selectors.length - 1];
+ if (!lastSelector.evaldCondition) {
+ return false;
+ }
+ if (lastSelector.condition &&
+ !lastSelector.condition.eval(
+ new contexts.Eval(context,
+ context.frames))) {
+ return false;
+ }
+ return true;
+};
+Ruleset.prototype.resetCache = function () {
+ this._rulesets = null;
+ this._variables = null;
+ this._lookups = {};
+};
+Ruleset.prototype.variables = function () {
+ if (!this._variables) {
+ this._variables = !this.rules ? {} : this.rules.reduce(function (hash, r) {
+ if (r instanceof Rule && r.variable === true) {
+ hash[r.name] = r;
+ }
+ // when evaluating variables in an import statement, imports have not been eval'd
+ // so we need to go inside import statements.
+ // guard against root being a string (in the case of inlined less)
+ if (r.type === "Import" && r.root && r.root.variables) {
+ var vars = r.root.variables();
+ for (var name in vars) {
+ if (vars.hasOwnProperty(name)) {
+ hash[name] = vars[name];
+ }
+ }
+ }
+ return hash;
+ }, {});
+ }
+ return this._variables;
+};
+Ruleset.prototype.variable = function (name) {
+ return this.variables()[name];
+};
+Ruleset.prototype.rulesets = function () {
+ if (!this.rules) { return []; }
+
+ var filtRules = [], rules = this.rules, cnt = rules.length,
+ i, rule;
+
+ for (i = 0; i < cnt; i++) {
+ rule = rules[i];
+ if (rule.isRuleset) {
+ filtRules.push(rule);
+ }
+ }
+
+ return filtRules;
+};
+Ruleset.prototype.prependRule = function (rule) {
+ var rules = this.rules;
+ if (rules) {
+ rules.unshift(rule);
+ } else {
+ this.rules = [ rule ];
+ }
+};
+Ruleset.prototype.find = function (selector, self, filter) {
+ self = self || this;
+ var rules = [], match, foundMixins,
+ 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++) {
+ match = selector.match(rule.selectors[j]);
+ if (match) {
+ if (selector.elements.length > match) {
+ if (!filter || filter(rule)) {
+ foundMixins = rule.find(new Selector(selector.elements.slice(match)), self, filter);
+ for (var i = 0; i < foundMixins.length; ++i) {
+ foundMixins[i].path.push(rule);
+ }
+ Array.prototype.push.apply(rules, foundMixins);
+ }
+ } else {
+ rules.push({ rule: rule, path: []});
+ }
+ break;
+ }
+ }
+ }
+ });
+ this._lookups[key] = rules;
+ return rules;
+};
+Ruleset.prototype.genCSS = function (context, output) {
+ var i, j,
+ charsetRuleNodes = [],
+ ruleNodes = [],
+ debugInfo, // Line number debugging
+ rule,
+ path;
+
+ context.tabLevel = (context.tabLevel || 0);
+
+ if (!this.root) {
+ context.tabLevel++;
+ }
+
+ var tabRuleStr = context.compress ? '' : Array(context.tabLevel + 1).join(" "),
+ tabSetStr = context.compress ? '' : Array(context.tabLevel).join(" "),
+ sep;
+
+ function isRulesetLikeNode(rule) {
+ // if it has nested rules, then it should be treated like a ruleset
+ // medias and comments do not have nested rules, but should be treated like rulesets anyway
+ // some directives and anonymous nodes are ruleset like, others are not
+ if (typeof rule.isRulesetLike === "boolean") {
+ return rule.isRulesetLike;
+ } else if (typeof rule.isRulesetLike === "function") {
+ return rule.isRulesetLike();
+ }
+
+ //anything else is assumed to be a rule
+ return false;
+ }
+
+ var charsetNodeIndex = 0;
+ var importNodeIndex = 0;
+ for (i = 0; i < this.rules.length; i++) {
+ rule = this.rules[i];
+ if (rule.type === "Comment") {
+ if (importNodeIndex === i) {
+ importNodeIndex++;
+ }
+ ruleNodes.push(rule);
+ } else if (rule.isCharset && rule.isCharset()) {
+ ruleNodes.splice(charsetNodeIndex, 0, rule);
+ charsetNodeIndex++;
+ importNodeIndex++;
+ } else if (rule.type === "Import") {
+ ruleNodes.splice(importNodeIndex, 0, rule);
+ importNodeIndex++;
+ } else {
+ ruleNodes.push(rule);
+ }
+ }
+ ruleNodes = charsetRuleNodes.concat(ruleNodes);
+
+ // If this is the root node, we don't render
+ // a selector, or {}.
+ if (!this.root) {
+ debugInfo = getDebugInfo(context, this, tabSetStr);
+
+ if (debugInfo) {
+ output.add(debugInfo);
+ output.add(tabSetStr);
+ }
+
+ var paths = this.paths, pathCnt = paths.length,
+ pathSubCnt;
+
+ sep = context.compress ? ',' : (',\n' + tabSetStr);
+
+ for (i = 0; i < pathCnt; i++) {
+ path = paths[i];
+ if (!(pathSubCnt = path.length)) { continue; }
+ if (i > 0) { output.add(sep); }
+
+ context.firstSelector = true;
+ path[0].genCSS(context, output);
+
+ context.firstSelector = false;
+ for (j = 1; j < pathSubCnt; j++) {
+ path[j].genCSS(context, output);
+ }
+ }
+
+ output.add((context.compress ? '{' : ' {\n') + tabRuleStr);
+ }
+
+ // Compile rules and rulesets
+ for (i = 0; i < ruleNodes.length; i++) {
+ rule = ruleNodes[i];
+
+ if (i + 1 === ruleNodes.length) {
+ context.lastRule = true;
+ }
+
+ var currentLastRule = context.lastRule;
+ if (isRulesetLikeNode(rule)) {
+ context.lastRule = false;
+ }
+
+ if (rule.genCSS) {
+ rule.genCSS(context, output);
+ } else if (rule.value) {
+ output.add(rule.value.toString());
+ }
+
+ context.lastRule = currentLastRule;
+
+ if (!context.lastRule) {
+ output.add(context.compress ? '' : ('\n' + tabRuleStr));
+ } else {
+ context.lastRule = false;
+ }
+ }
+
+ if (!this.root) {
+ output.add((context.compress ? '}' : '\n' + tabSetStr + '}'));
+ context.tabLevel--;
+ }
+
+ if (!output.isEmpty() && !context.compress && this.firstRoot) {
+ output.add('\n');
+ }
+};
+
+Ruleset.prototype.joinSelectors = function (paths, context, selectors) {
+ for (var s = 0; s < selectors.length; s++) {
+ this.joinSelector(paths, context, selectors[s]);
+ }
+};
+
+Ruleset.prototype.joinSelector = function (paths, context, selector) {
+
+ function createParenthesis(elementsToPak, originalElement) {
+ var replacementParen, j;
+ if (elementsToPak.length === 0) {
+ replacementParen = new Paren(elementsToPak[0]);
+ } else {
+ var insideParent = [];
+ for (j = 0; j < elementsToPak.length; j++) {
+ insideParent.push(new Element(null, elementsToPak[j], originalElement.index, originalElement.currentFileInfo));
+ }
+ replacementParen = new Paren(new Selector(insideParent));
+ }
+ return replacementParen;
+ }
+
+ function createSelector(containedElement, originalElement) {
+ var element, selector;
+ element = new Element(null, containedElement, originalElement.index, originalElement.currentFileInfo);
+ selector = new Selector([element]);
+ return selector;
+ }
+
+ // joins selector path from `beginningPath` with selector path in `addPath`
+ // `replacedElement` contains element that is being replaced by `addPath`
+ // returns concatenated path
+ function addReplacementIntoPath(beginningPath, addPath, replacedElement, originalSelector) {
+ var newSelectorPath, lastSelector, newJoinedSelector;
+ // our new selector path
+ newSelectorPath = [];
+
+ //construct the joined selector - if & is the first thing this will be empty,
+ // if not newJoinedSelector will be the last set of elements in the selector
+ if (beginningPath.length > 0) {
+ newSelectorPath = beginningPath.slice(0);
+ lastSelector = newSelectorPath.pop();
+ newJoinedSelector = originalSelector.createDerived(lastSelector.elements.slice(0));
+ }
+ else {
+ newJoinedSelector = originalSelector.createDerived([]);
+ }
+
+ if (addPath.length > 0) {
+ // /deep/ is a combinator that is valid without anything in front of it
+ // so if the & does not have a combinator that is "" or " " then
+ // and there is a combinator on the parent, then grab that.
+ // this also allows + a { & .b { .a & { ... though not sure why you would want to do that
+ var combinator = replacedElement.combinator, parentEl = addPath[0].elements[0];
+ if (combinator.emptyOrWhitespace && !parentEl.combinator.emptyOrWhitespace) {
+ combinator = parentEl.combinator;
+ }
+ // join the elements so far with the first part of the parent
+ newJoinedSelector.elements.push(new Element(combinator, parentEl.value, replacedElement.index, replacedElement.currentFileInfo));
+ newJoinedSelector.elements = newJoinedSelector.elements.concat(addPath[0].elements.slice(1));
+ }
+
+ // now add the joined selector - but only if it is not empty
+ if (newJoinedSelector.elements.length !== 0) {
+ newSelectorPath.push(newJoinedSelector);
+ }
+
+ //put together the parent selectors after the join (e.g. the rest of the parent)
+ if (addPath.length > 1) {
+ var restOfPath = addPath.slice(1);
+ restOfPath = restOfPath.map(function (selector) {
+ return selector.createDerived(selector.elements, []);
+ });
+ newSelectorPath = newSelectorPath.concat(restOfPath);
+ }
+ return newSelectorPath;
+ }
+
+ // joins selector path from `beginningPath` with every selector path in `addPaths` array
+ // `replacedElement` contains element that is being replaced by `addPath`
+ // returns array with all concatenated paths
+ function addAllReplacementsIntoPath( beginningPath, addPaths, replacedElement, originalSelector, result) {
+ var j;
+ for (j = 0; j < beginningPath.length; j++) {
+ var newSelectorPath = addReplacementIntoPath(beginningPath[j], addPaths, replacedElement, originalSelector);
+ result.push(newSelectorPath);
+ }
+ return result;
+ }
+
+ function mergeElementsOnToSelectors(elements, selectors) {
+ var i, sel;
+
+ if (elements.length === 0) {
+ return ;
+ }
+ if (selectors.length === 0) {
+ selectors.push([ new Selector(elements) ]);
+ return;
+ }
+
+ for (i = 0; i < selectors.length; i++) {
+ sel = selectors[i];
+
+ // if the previous thing in sel is a parent this needs to join on to it
+ if (sel.length > 0) {
+ sel[sel.length - 1] = sel[sel.length - 1].createDerived(sel[sel.length - 1].elements.concat(elements));
+ }
+ else {
+ sel.push(new Selector(elements));
+ }
+ }
+ }
+
+ // replace all parent selectors inside `inSelector` by content of `context` array
+ // resulting selectors are returned inside `paths` array
+ // returns true if `inSelector` contained at least one parent selector
+ function replaceParentSelector(paths, context, inSelector) {
+ // The paths are [[Selector]]
+ // The first list is a list of comma separated selectors
+ // The inner list is a list of inheritance separated selectors
+ // e.g.
+ // .a, .b {
+ // .c {
+ // }
+ // }
+ // == [[.a] [.c]] [[.b] [.c]]
+ //
+ var i, j, k, currentElements, newSelectors, selectorsMultiplied, sel, el, hadParentSelector = false, length, lastSelector;
+ function findNestedSelector(element) {
+ var maybeSelector;
+ if (element.value.type !== 'Paren') {
+ return null;
+ }
+
+ maybeSelector = element.value.value;
+ if (maybeSelector.type !== 'Selector') {
+ return null;
+ }
+
+ return maybeSelector;
+ }
+
+ // the elements from the current selector so far
+ currentElements = [];
+ // the current list of new selectors to add to the path.
+ // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
+ // by the parents
+ newSelectors = [
+ []
+ ];
+
+ for (i = 0; i < inSelector.elements.length; i++) {
+ el = inSelector.elements[i];
+ // non parent reference elements just get added
+ if (el.value !== "&") {
+ var nestedSelector = findNestedSelector(el);
+ if (nestedSelector != null) {
+ // merge the current list of non parent selector elements
+ // on to the current list of selectors to add
+ mergeElementsOnToSelectors(currentElements, newSelectors);
+
+ var nestedPaths = [], replaced, replacedNewSelectors = [];
+ replaced = replaceParentSelector(nestedPaths, context, nestedSelector);
+ hadParentSelector = hadParentSelector || replaced;
+ //the nestedPaths array should have only one member - replaceParentSelector does not multiply selectors
+ for (k = 0; k < nestedPaths.length; k++) {
+ var replacementSelector = createSelector(createParenthesis(nestedPaths[k], el), el);
+ addAllReplacementsIntoPath(newSelectors, [replacementSelector], el, inSelector, replacedNewSelectors);
+ }
+ newSelectors = replacedNewSelectors;
+ currentElements = [];
+
+ } else {
+ currentElements.push(el);
+ }
+
+ } else {
+ hadParentSelector = true;
+ // the new list of selectors to add
+ selectorsMultiplied = [];
+
+ // merge the current list of non parent selector elements
+ // on to the current list of selectors to add
+ mergeElementsOnToSelectors(currentElements, newSelectors);
+
+ // loop through our current selectors
+ for (j = 0; j < newSelectors.length; j++) {
+ sel = newSelectors[j];
+ // if we don't have any parent paths, the & might be in a mixin so that it can be used
+ // whether there are parents or not
+ if (context.length === 0) {
+ // the combinator used on el should now be applied to the next element instead so that
+ // it is not lost
+ if (sel.length > 0) {
+ sel[0].elements.push(new Element(el.combinator, '', el.index, el.currentFileInfo));
+ }
+ selectorsMultiplied.push(sel);
+ }
+ else {
+ // and the parent selectors
+ for (k = 0; k < context.length; k++) {
+ // We need to put the current selectors
+ // then join the last selector's elements on to the parents selectors
+ var newSelectorPath = addReplacementIntoPath(sel, context[k], el, inSelector);
+ // add that to our new set of selectors
+ selectorsMultiplied.push(newSelectorPath);
+ }
+ }
+ }
+
+ // our new selectors has been multiplied, so reset the state
+ newSelectors = selectorsMultiplied;
+ currentElements = [];
+ }
+ }
+
+ // if we have any elements left over (e.g. .a& .b == .b)
+ // add them on to all the current selectors
+ mergeElementsOnToSelectors(currentElements, newSelectors);
+
+ for (i = 0; i < newSelectors.length; i++) {
+ length = newSelectors[i].length;
+ if (length > 0) {
+ paths.push(newSelectors[i]);
+ lastSelector = newSelectors[i][length - 1];
+ newSelectors[i][length - 1] = lastSelector.createDerived(lastSelector.elements, inSelector.extendList);
+ //newSelectors[i][length - 1].copyVisibilityInfo(inSelector.visibilityInfo());
+ }
+ }
+
+ return hadParentSelector;
+ }
+
+ function deriveSelector(visibilityInfo, deriveFrom) {
+ var newSelector = deriveFrom.createDerived(deriveFrom.elements, deriveFrom.extendList, deriveFrom.evaldCondition);
+ newSelector.copyVisibilityInfo(visibilityInfo);
+ return newSelector;
+ }
+
+ // joinSelector code follows
+ var i, newPaths, hadParentSelector;
+
+ newPaths = [];
+ hadParentSelector = replaceParentSelector(newPaths, context, selector);
+
+ if (!hadParentSelector) {
+ if (context.length > 0) {
+ newPaths = [];
+ for (i = 0; i < context.length; i++) {
+ //var concatenated = [];
+ //context[i].forEach(function(entry) {
+ // var newEntry = entry.createDerived(entry.elements, entry.extendList, entry.evaldCondition);
+ // newEntry.copyVisibilityInfo(selector.visibilityInfo());
+ // concatenated.push(newEntry);
+ //}, this);
+ var concatenated = context[i].map(deriveSelector.bind(this, selector.visibilityInfo()));
+
+ concatenated.push(selector);
+ newPaths.push(concatenated);
+ }
+ }
+ else {
+ newPaths = [[selector]];
+ }
+ }
+
+ for (i = 0; i < newPaths.length; i++) {
+ paths.push(newPaths[i]);
+ }
+
+};
+module.exports = Ruleset;
+
+},{"../contexts":11,"../functions/default":20,"../functions/function-registry":22,"./debug-info":54,"./element":58,"./node":70,"./paren":72,"./rule":74,"./selector":77}],77:[function(require,module,exports){
+var Node = require("./node"),
+ Element = require("./element");
+
+var Selector = function (elements, extendList, condition, index, currentFileInfo, visibilityInfo) {
+ this.elements = elements;
+ this.extendList = extendList;
+ this.condition = condition;
+ this.currentFileInfo = currentFileInfo || {};
+ if (!condition) {
+ this.evaldCondition = true;
+ }
+ this.copyVisibilityInfo(visibilityInfo);
+};
+Selector.prototype = new Node();
+Selector.prototype.type = "Selector";
+Selector.prototype.accept = function (visitor) {
+ if (this.elements) {
+ this.elements = visitor.visitArray(this.elements);
+ }
+ if (this.extendList) {
+ this.extendList = visitor.visitArray(this.extendList);
+ }
+ if (this.condition) {
+ this.condition = visitor.visit(this.condition);
+ }
+};
+Selector.prototype.createDerived = function(elements, extendList, evaldCondition) {
+ var info = this.visibilityInfo();
+ evaldCondition = (evaldCondition != null) ? evaldCondition : this.evaldCondition;
+ var newSelector = new Selector(elements, extendList || this.extendList, null, this.index, this.currentFileInfo, info);
+ newSelector.evaldCondition = evaldCondition;
+ newSelector.mediaEmpty = this.mediaEmpty;
+ return newSelector;
+};
+Selector.prototype.createEmptySelectors = function() {
+ var el = new Element('', '&', this.index, this.currentFileInfo),
+ sels = [new Selector([el], null, null, this.index, this.currentFileInfo)];
+ sels[0].mediaEmpty = true;
+ return sels;
+};
+Selector.prototype.match = function (other) {
+ var elements = this.elements,
+ len = elements.length,
+ olen, i;
+
+ other.CacheElements();
+
+ olen = other._elements.length;
+ if (olen === 0 || len < olen) {
+ return 0;
+ } else {
+ for (i = 0; i < olen; i++) {
+ if (elements[i].value !== other._elements[i]) {
+ return 0;
+ }
+ }
+ }
+
+ return olen; // return number of matched elements
+};
+Selector.prototype.CacheElements = function() {
+ if (this._elements) {
+ return;
+ }
+
+ var elements = this.elements.map( function(v) {
+ return v.combinator.value + (v.value.value || v.value);
+ }).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);
+
+ if (elements) {
+ if (elements[0] === "&") {
+ elements.shift();
+ }
+ } else {
+ elements = [];
+ }
+
+ this._elements = elements;
+};
+Selector.prototype.isJustParentSelector = function() {
+ return !this.mediaEmpty &&
+ this.elements.length === 1 &&
+ this.elements[0].value === '&' &&
+ (this.elements[0].combinator.value === ' ' || this.elements[0].combinator.value === '');
+};
+Selector.prototype.eval = function (context) {
+ var evaldCondition = this.condition && this.condition.eval(context),
+ elements = this.elements, extendList = this.extendList;
+
+ elements = elements && elements.map(function (e) { return e.eval(context); });
+ extendList = extendList && extendList.map(function(extend) { return extend.eval(context); });
+
+ return this.createDerived(elements, extendList, evaldCondition);
+};
+Selector.prototype.genCSS = function (context, output) {
+ var i, element;
+ if ((!context || !context.firstSelector) && this.elements[0].combinator.value === "") {
+ output.add(' ', this.currentFileInfo, this.index);
+ }
+ if (!this._css) {
+ //TODO caching? speed comparison?
+ for (i = 0; i < this.elements.length; i++) {
+ element = this.elements[i];
+ element.genCSS(context, output);
+ }
+ }
+};
+Selector.prototype.getIsOutput = function() {
+ return this.evaldCondition;
+};
+module.exports = Selector;
+
+},{"./element":58,"./node":70}],78:[function(require,module,exports){
+var Node = require("./node");
+
+var UnicodeDescriptor = function (value) {
+ this.value = value;
+};
+UnicodeDescriptor.prototype = new Node();
+UnicodeDescriptor.prototype.type = "UnicodeDescriptor";
+
+module.exports = UnicodeDescriptor;
+
+},{"./node":70}],79:[function(require,module,exports){
+var Node = require("./node"),
+ unitConversions = require("../data/unit-conversions");
+
+var Unit = function (numerator, denominator, backupUnit) {
+ this.numerator = numerator ? numerator.slice(0).sort() : [];
+ this.denominator = denominator ? denominator.slice(0).sort() : [];
+ if (backupUnit) {
+ this.backupUnit = backupUnit;
+ } else if (numerator && numerator.length) {
+ this.backupUnit = numerator[0];
+ }
+};
+
+Unit.prototype = new Node();
+Unit.prototype.type = "Unit";
+Unit.prototype.clone = function () {
+ return new Unit(this.numerator.slice(0), this.denominator.slice(0), this.backupUnit);
+};
+Unit.prototype.genCSS = function (context, output) {
+ // Dimension checks the unit is singular and throws an error if in strict math mode.
+ var strictUnits = context && context.strictUnits;
+ if (this.numerator.length === 1) {
+ output.add(this.numerator[0]); // the ideal situation
+ } else if (!strictUnits && this.backupUnit) {
+ output.add(this.backupUnit);
+ } else if (!strictUnits && this.denominator.length) {
+ output.add(this.denominator[0]);
+ }
+};
+Unit.prototype.toString = function () {
+ var i, returnStr = this.numerator.join("*");
+ for (i = 0; i < this.denominator.length; i++) {
+ returnStr += "/" + this.denominator[i];
+ }
+ return returnStr;
+};
+Unit.prototype.compare = function (other) {
+ return this.is(other.toString()) ? 0 : undefined;
+};
+Unit.prototype.is = function (unitString) {
+ return this.toString().toUpperCase() === unitString.toUpperCase();
+};
+Unit.prototype.isLength = function () {
+ return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/));
+};
+Unit.prototype.isEmpty = function () {
+ return this.numerator.length === 0 && this.denominator.length === 0;
+};
+Unit.prototype.isSingular = function() {
+ return this.numerator.length <= 1 && this.denominator.length === 0;
+};
+Unit.prototype.map = function(callback) {
+ var i;
+
+ for (i = 0; i < this.numerator.length; i++) {
+ this.numerator[i] = callback(this.numerator[i], false);
+ }
+
+ for (i = 0; i < this.denominator.length; i++) {
+ this.denominator[i] = callback(this.denominator[i], true);
+ }
+};
+Unit.prototype.usedUnits = function() {
+ var group, result = {}, mapUnit, groupName;
+
+ mapUnit = function (atomicUnit) {
+ /*jshint loopfunc:true */
+ if (group.hasOwnProperty(atomicUnit) && !result[groupName]) {
+ result[groupName] = atomicUnit;
+ }
+
+ return atomicUnit;
+ };
+
+ for (groupName in unitConversions) {
+ if (unitConversions.hasOwnProperty(groupName)) {
+ group = unitConversions[groupName];
+
+ this.map(mapUnit);
+ }
+ }
+
+ return result;
+};
+Unit.prototype.cancel = function () {
+ var counter = {}, atomicUnit, i;
+
+ for (i = 0; i < this.numerator.length; i++) {
+ atomicUnit = this.numerator[i];
+ counter[atomicUnit] = (counter[atomicUnit] || 0) + 1;
+ }
+
+ for (i = 0; i < this.denominator.length; i++) {
+ atomicUnit = this.denominator[i];
+ counter[atomicUnit] = (counter[atomicUnit] || 0) - 1;
+ }
+
+ this.numerator = [];
+ this.denominator = [];
+
+ for (atomicUnit in counter) {
+ if (counter.hasOwnProperty(atomicUnit)) {
+ var count = counter[atomicUnit];
+
+ if (count > 0) {
+ for (i = 0; i < count; i++) {
+ this.numerator.push(atomicUnit);
+ }
+ } else if (count < 0) {
+ for (i = 0; i < -count; i++) {
+ this.denominator.push(atomicUnit);
+ }
+ }
+ }
+ }
+
+ this.numerator.sort();
+ this.denominator.sort();
+};
+module.exports = Unit;
+
+},{"../data/unit-conversions":14,"./node":70}],80:[function(require,module,exports){
+var Node = require("./node");
+
+var URL = function (val, index, currentFileInfo, isEvald) {
+ this.value = val;
+ this.currentFileInfo = currentFileInfo;
+ this.index = index;
+ this.isEvald = isEvald;
+};
+URL.prototype = new Node();
+URL.prototype.type = "Url";
+URL.prototype.accept = function (visitor) {
+ this.value = visitor.visit(this.value);
+};
+URL.prototype.genCSS = function (context, output) {
+ output.add("url(");
+ this.value.genCSS(context, output);
+ output.add(")");
+};
+URL.prototype.eval = function (context) {
+ var val = this.value.eval(context),
+ rootpath;
+
+ if (!this.isEvald) {
+ // Add the base path if the URL is relative
+ rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
+ if (rootpath &&
+ typeof val.value === "string" &&
+ context.isPathRelative(val.value)) {
+
+ if (!val.quote) {
+ rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\" + match; });
+ }
+ val.value = rootpath + val.value;
+ }
+
+ val.value = context.normalizePath(val.value);
+
+ // Add url args if enabled
+ if (context.urlArgs) {
+ if (!val.value.match(/^\s*data:/)) {
+ var delimiter = val.value.indexOf('?') === -1 ? '?' : '&';
+ var urlArgs = delimiter + context.urlArgs;
+ if (val.value.indexOf('#') !== -1) {
+ val.value = val.value.replace('#', urlArgs + '#');
+ } else {
+ val.value += urlArgs;
+ }
+ }
+ }
+ }
+
+ return new URL(val, this.index, this.currentFileInfo, true);
+};
+module.exports = URL;
+
+},{"./node":70}],81:[function(require,module,exports){
+var Node = require("./node");
+
+var Value = function (value) {
+ this.value = value;
+ if (!value) {
+ throw new Error("Value requires an array argument");
+ }
+};
+Value.prototype = new Node();
+Value.prototype.type = "Value";
+Value.prototype.accept = function (visitor) {
+ if (this.value) {
+ this.value = visitor.visitArray(this.value);
+ }
+};
+Value.prototype.eval = function (context) {
+ if (this.value.length === 1) {
+ return this.value[0].eval(context);
+ } else {
+ return new Value(this.value.map(function (v) {
+ return v.eval(context);
+ }));
+ }
+};
+Value.prototype.genCSS = function (context, output) {
+ var i;
+ for (i = 0; i < this.value.length; i++) {
+ this.value[i].genCSS(context, output);
+ if (i + 1 < this.value.length) {
+ output.add((context && context.compress) ? ',' : ', ');
+ }
+ }
+};
+module.exports = Value;
+
+},{"./node":70}],82:[function(require,module,exports){
+var Node = require("./node");
+
+var Variable = function (name, index, currentFileInfo) {
+ this.name = name;
+ this.index = index;
+ this.currentFileInfo = currentFileInfo || {};
+};
+Variable.prototype = new Node();
+Variable.prototype.type = "Variable";
+Variable.prototype.eval = function (context) {
+ var variable, name = this.name;
+
+ if (name.indexOf('@@') === 0) {
+ name = '@' + new Variable(name.slice(1), this.index, this.currentFileInfo).eval(context).value;
+ }
+
+ if (this.evaluating) {
+ throw { type: 'Name',
+ message: "Recursive variable definition for " + name,
+ filename: this.currentFileInfo.filename,
+ index: this.index };
+ }
+
+ this.evaluating = true;
+
+ variable = this.find(context.frames, function (frame) {
+ var v = frame.variable(name);
+ if (v) {
+ if (v.important) {
+ var importantScope = context.importantScope[context.importantScope.length - 1];
+ importantScope.important = v.important;
+ }
+ return v.value.eval(context);
+ }
+ });
+ if (variable) {
+ this.evaluating = false;
+ return variable;
+ } else {
+ throw { type: 'Name',
+ message: "variable " + name + " is undefined",
+ filename: this.currentFileInfo.filename,
+ index: this.index };
+ }
+};
+Variable.prototype.find = function (obj, fun) {
+ for (var i = 0, r; i < obj.length; i++) {
+ r = fun.call(obj, obj[i]);
+ if (r) { return r; }
+ }
+ return null;
+};
+module.exports = Variable;
+
+},{"./node":70}],83:[function(require,module,exports){
+module.exports = {
+ getLocation: function(index, inputStream) {
+ var n = index + 1,
+ line = null,
+ column = -1;
+
+ while (--n >= 0 && inputStream.charAt(n) !== '\n') {
+ column++;
+ }
+
+ if (typeof index === 'number') {
+ line = (inputStream.slice(0, index).match(/\n/g) || "").length;
+ }
+
+ return {
+ line: line,
+ column: column
+ };
+ }
+};
+
+},{}],84:[function(require,module,exports){
+var tree = require("../tree"),
+ Visitor = require("./visitor"),
+ logger = require("../logger");
+
+/*jshint loopfunc:true */
+
+var ExtendFinderVisitor = function() {
+ this._visitor = new Visitor(this);
+ this.contexts = [];
+ this.allExtendsStack = [[]];
+};
+
+ExtendFinderVisitor.prototype = {
+ run: function (root) {
+ root = this._visitor.visit(root);
+ root.allExtends = this.allExtendsStack[0];
+ return root;
+ },
+ visitRule: function (ruleNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitRuleset: function (rulesetNode, visitArgs) {
+ if (rulesetNode.root) {
+ return;
+ }
+
+ var i, j, extend, allSelectorsExtendList = [], extendList;
+
+ // get &:extend(.a); rules which apply to all selectors in this ruleset
+ var rules = rulesetNode.rules, ruleCnt = rules ? rules.length : 0;
+ for (i = 0; i < ruleCnt; i++) {
+ if (rulesetNode.rules[i] instanceof tree.Extend) {
+ allSelectorsExtendList.push(rules[i]);
+ rulesetNode.extendOnEveryPath = true;
+ }
+ }
+
+ // now find every selector and apply the extends that apply to all extends
+ // and the ones which apply to an individual extend
+ var paths = rulesetNode.paths;
+ for (i = 0; i < paths.length; i++) {
+ var selectorPath = paths[i],
+ selector = selectorPath[selectorPath.length - 1],
+ selExtendList = selector.extendList;
+
+ extendList = selExtendList ? selExtendList.slice(0).concat(allSelectorsExtendList)
+ : allSelectorsExtendList;
+
+ if (extendList) {
+ extendList = extendList.map(function(allSelectorsExtend) {
+ return allSelectorsExtend.clone();
+ });
+ }
+
+ for (j = 0; j < extendList.length; j++) {
+ this.foundExtends = true;
+ extend = extendList[j];
+ extend.findSelfSelectors(selectorPath);
+ extend.ruleset = rulesetNode;
+ if (j === 0) { extend.firstExtendOnThisSelectorPath = true; }
+ this.allExtendsStack[this.allExtendsStack.length - 1].push(extend);
+ }
+ }
+
+ this.contexts.push(rulesetNode.selectors);
+ },
+ visitRulesetOut: function (rulesetNode) {
+ if (!rulesetNode.root) {
+ this.contexts.length = this.contexts.length - 1;
+ }
+ },
+ visitMedia: function (mediaNode, visitArgs) {
+ mediaNode.allExtends = [];
+ this.allExtendsStack.push(mediaNode.allExtends);
+ },
+ visitMediaOut: function (mediaNode) {
+ this.allExtendsStack.length = this.allExtendsStack.length - 1;
+ },
+ visitDirective: function (directiveNode, visitArgs) {
+ directiveNode.allExtends = [];
+ this.allExtendsStack.push(directiveNode.allExtends);
+ },
+ visitDirectiveOut: function (directiveNode) {
+ this.allExtendsStack.length = this.allExtendsStack.length - 1;
+ }
+};
+
+var ProcessExtendsVisitor = function() {
+ this._visitor = new Visitor(this);
+};
+
+ProcessExtendsVisitor.prototype = {
+ run: function(root) {
+ var extendFinder = new ExtendFinderVisitor();
+ this.extendIndices = {};
+ extendFinder.run(root);
+ if (!extendFinder.foundExtends) { return root; }
+ root.allExtends = root.allExtends.concat(this.doExtendChaining(root.allExtends, root.allExtends));
+ this.allExtendsStack = [root.allExtends];
+ var newRoot = this._visitor.visit(root);
+ this.checkExtendsForNonMatched(root.allExtends);
+ return newRoot;
+ },
+ checkExtendsForNonMatched: function(extendList) {
+ var indices = this.extendIndices;
+ extendList.filter(function(extend) {
+ return !extend.hasFoundMatches && extend.parent_ids.length == 1;
+ }).forEach(function(extend) {
+ var selector = "_unknown_";
+ try {
+ selector = extend.selector.toCSS({});
+ }
+ catch(_) {}
+
+ if (!indices[extend.index + ' ' + selector]) {
+ indices[extend.index + ' ' + selector] = true;
+ logger.warn("extend '" + selector + "' has no matches");
+ }
+ });
+ },
+ doExtendChaining: function (extendsList, extendsListTarget, iterationCount) {
+ //
+ // chaining is different from normal extension.. if we extend an extend then we are not just copying, altering
+ // and pasting the selector we would do normally, but we are also adding an extend with the same target selector
+ // this means this new extend can then go and alter other extends
+ //
+ // this method deals with all the chaining work - without it, extend is flat and doesn't work on other extend selectors
+ // this is also the most expensive.. and a match on one selector can cause an extension of a selector we had already
+ // processed if we look at each selector at a time, as is done in visitRuleset
+
+ var extendIndex, targetExtendIndex, matches, extendsToAdd = [], newSelector, extendVisitor = this, selectorPath,
+ extend, targetExtend, newExtend;
+
+ iterationCount = iterationCount || 0;
+
+ //loop through comparing every extend with every target extend.
+ // a target extend is the one on the ruleset we are looking at copy/edit/pasting in place
+ // e.g. .a:extend(.b) {} and .b:extend(.c) {} then the first extend extends the second one
+ // and the second is the target.
+ // the separation into two lists allows us to process a subset of chains with a bigger set, as is the
+ // case when processing media queries
+ for (extendIndex = 0; extendIndex < extendsList.length; extendIndex++) {
+ for (targetExtendIndex = 0; targetExtendIndex < extendsListTarget.length; targetExtendIndex++) {
+
+ extend = extendsList[extendIndex];
+ targetExtend = extendsListTarget[targetExtendIndex];
+
+ // look for circular references
+ if ( extend.parent_ids.indexOf( targetExtend.object_id ) >= 0 ) { continue; }
+
+ // find a match in the target extends self selector (the bit before :extend)
+ selectorPath = [targetExtend.selfSelectors[0]];
+ matches = extendVisitor.findMatch(extend, selectorPath);
+
+ if (matches.length) {
+ extend.hasFoundMatches = true;
+
+ // we found a match, so for each self selector..
+ extend.selfSelectors.forEach(function(selfSelector) {
+ var info = targetExtend.visibilityInfo();
+
+ // process the extend as usual
+ newSelector = extendVisitor.extendSelector(matches, selectorPath, selfSelector, extend.isVisible());
+
+ // but now we create a new extend from it
+ newExtend = new(tree.Extend)(targetExtend.selector, targetExtend.option, 0, targetExtend.currentFileInfo, info);
+ newExtend.selfSelectors = newSelector;
+
+ // add the extend onto the list of extends for that selector
+ newSelector[newSelector.length - 1].extendList = [newExtend];
+
+ // record that we need to add it.
+ extendsToAdd.push(newExtend);
+ newExtend.ruleset = targetExtend.ruleset;
+
+ //remember its parents for circular references
+ newExtend.parent_ids = newExtend.parent_ids.concat(targetExtend.parent_ids, extend.parent_ids);
+
+ // only process the selector once.. if we have :extend(.a,.b) then multiple
+ // extends will look at the same selector path, so when extending
+ // we know that any others will be duplicates in terms of what is added to the css
+ if (targetExtend.firstExtendOnThisSelectorPath) {
+ newExtend.firstExtendOnThisSelectorPath = true;
+ targetExtend.ruleset.paths.push(newSelector);
+ }
+ });
+ }
+ }
+ }
+
+ if (extendsToAdd.length) {
+ // try to detect circular references to stop a stack overflow.
+ // may no longer be needed.
+ this.extendChainCount++;
+ if (iterationCount > 100) {
+ var selectorOne = "{unable to calculate}";
+ var selectorTwo = "{unable to calculate}";
+ try {
+ selectorOne = extendsToAdd[0].selfSelectors[0].toCSS();
+ selectorTwo = extendsToAdd[0].selector.toCSS();
+ }
+ catch(e) {}
+ throw { message: "extend circular reference detected. One of the circular extends is currently:" +
+ selectorOne + ":extend(" + selectorTwo + ")"};
+ }
+
+ // now process the new extends on the existing rules so that we can handle a extending b extending c extending
+ // d extending e...
+ return extendsToAdd.concat(extendVisitor.doExtendChaining(extendsToAdd, extendsListTarget, iterationCount + 1));
+ } else {
+ return extendsToAdd;
+ }
+ },
+ visitRule: function (ruleNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitSelector: function (selectorNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitRuleset: function (rulesetNode, visitArgs) {
+ if (rulesetNode.root) {
+ return;
+ }
+ var matches, pathIndex, extendIndex, allExtends = this.allExtendsStack[this.allExtendsStack.length - 1],
+ selectorsToAdd = [], extendVisitor = this, selectorPath;
+
+ // look at each selector path in the ruleset, find any extend matches and then copy, find and replace
+
+ for (extendIndex = 0; extendIndex < allExtends.length; extendIndex++) {
+ for (pathIndex = 0; pathIndex < rulesetNode.paths.length; pathIndex++) {
+ selectorPath = rulesetNode.paths[pathIndex];
+
+ // extending extends happens initially, before the main pass
+ if (rulesetNode.extendOnEveryPath) { continue; }
+ var extendList = selectorPath[selectorPath.length - 1].extendList;
+ if (extendList && extendList.length) { continue; }
+
+ matches = this.findMatch(allExtends[extendIndex], selectorPath);
+
+ if (matches.length) {
+ allExtends[extendIndex].hasFoundMatches = true;
+
+ allExtends[extendIndex].selfSelectors.forEach(function(selfSelector) {
+ var extendedSelectors;
+ extendedSelectors = extendVisitor.extendSelector(matches, selectorPath, selfSelector, allExtends[extendIndex].isVisible());
+ selectorsToAdd.push(extendedSelectors);
+ });
+ }
+ }
+ }
+ rulesetNode.paths = rulesetNode.paths.concat(selectorsToAdd);
+ },
+ findMatch: function (extend, haystackSelectorPath) {
+ //
+ // look through the haystack selector path to try and find the needle - extend.selector
+ // returns an array of selector matches that can then be replaced
+ //
+ var haystackSelectorIndex, hackstackSelector, hackstackElementIndex, haystackElement,
+ targetCombinator, i,
+ extendVisitor = this,
+ needleElements = extend.selector.elements,
+ potentialMatches = [], potentialMatch, matches = [];
+
+ // loop through the haystack elements
+ for (haystackSelectorIndex = 0; haystackSelectorIndex < haystackSelectorPath.length; haystackSelectorIndex++) {
+ hackstackSelector = haystackSelectorPath[haystackSelectorIndex];
+
+ for (hackstackElementIndex = 0; hackstackElementIndex < hackstackSelector.elements.length; hackstackElementIndex++) {
+
+ haystackElement = hackstackSelector.elements[hackstackElementIndex];
+
+ // if we allow elements before our match we can add a potential match every time. otherwise only at the first element.
+ if (extend.allowBefore || (haystackSelectorIndex === 0 && hackstackElementIndex === 0)) {
+ potentialMatches.push({pathIndex: haystackSelectorIndex, index: hackstackElementIndex, matched: 0,
+ initialCombinator: haystackElement.combinator});
+ }
+
+ for (i = 0; i < potentialMatches.length; i++) {
+ potentialMatch = potentialMatches[i];
+
+ // selectors add " " onto the first element. When we use & it joins the selectors together, but if we don't
+ // then each selector in haystackSelectorPath has a space before it added in the toCSS phase. so we need to
+ // work out what the resulting combinator will be
+ targetCombinator = haystackElement.combinator.value;
+ if (targetCombinator === '' && hackstackElementIndex === 0) {
+ targetCombinator = ' ';
+ }
+
+ // if we don't match, null our match to indicate failure
+ if (!extendVisitor.isElementValuesEqual(needleElements[potentialMatch.matched].value, haystackElement.value) ||
+ (potentialMatch.matched > 0 && needleElements[potentialMatch.matched].combinator.value !== targetCombinator)) {
+ potentialMatch = null;
+ } else {
+ potentialMatch.matched++;
+ }
+
+ // if we are still valid and have finished, test whether we have elements after and whether these are allowed
+ if (potentialMatch) {
+ potentialMatch.finished = potentialMatch.matched === needleElements.length;
+ if (potentialMatch.finished &&
+ (!extend.allowAfter &&
+ (hackstackElementIndex + 1 < hackstackSelector.elements.length || haystackSelectorIndex + 1 < haystackSelectorPath.length))) {
+ potentialMatch = null;
+ }
+ }
+ // if null we remove, if not, we are still valid, so either push as a valid match or continue
+ if (potentialMatch) {
+ if (potentialMatch.finished) {
+ potentialMatch.length = needleElements.length;
+ potentialMatch.endPathIndex = haystackSelectorIndex;
+ potentialMatch.endPathElementIndex = hackstackElementIndex + 1; // index after end of match
+ potentialMatches.length = 0; // we don't allow matches to overlap, so start matching again
+ matches.push(potentialMatch);
+ }
+ } else {
+ potentialMatches.splice(i, 1);
+ i--;
+ }
+ }
+ }
+ }
+ return matches;
+ },
+ isElementValuesEqual: function(elementValue1, elementValue2) {
+ if (typeof elementValue1 === "string" || typeof elementValue2 === "string") {
+ return elementValue1 === elementValue2;
+ }
+ if (elementValue1 instanceof tree.Attribute) {
+ if (elementValue1.op !== elementValue2.op || elementValue1.key !== elementValue2.key) {
+ return false;
+ }
+ if (!elementValue1.value || !elementValue2.value) {
+ if (elementValue1.value || elementValue2.value) {
+ return false;
+ }
+ return true;
+ }
+ elementValue1 = elementValue1.value.value || elementValue1.value;
+ elementValue2 = elementValue2.value.value || elementValue2.value;
+ return elementValue1 === elementValue2;
+ }
+ elementValue1 = elementValue1.value;
+ elementValue2 = elementValue2.value;
+ if (elementValue1 instanceof tree.Selector) {
+ if (!(elementValue2 instanceof tree.Selector) || elementValue1.elements.length !== elementValue2.elements.length) {
+ return false;
+ }
+ for (var i = 0; i < elementValue1.elements.length; i++) {
+ if (elementValue1.elements[i].combinator.value !== elementValue2.elements[i].combinator.value) {
+ if (i !== 0 || (elementValue1.elements[i].combinator.value || ' ') !== (elementValue2.elements[i].combinator.value || ' ')) {
+ return false;
+ }
+ }
+ if (!this.isElementValuesEqual(elementValue1.elements[i].value, elementValue2.elements[i].value)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ return false;
+ },
+ extendSelector:function (matches, selectorPath, replacementSelector, isVisible) {
+
+ //for a set of matches, replace each match with the replacement selector
+
+ var currentSelectorPathIndex = 0,
+ currentSelectorPathElementIndex = 0,
+ path = [],
+ matchIndex,
+ selector,
+ firstElement,
+ match,
+ newElements;
+
+ for (matchIndex = 0; matchIndex < matches.length; matchIndex++) {
+ match = matches[matchIndex];
+ selector = selectorPath[match.pathIndex];
+ firstElement = new tree.Element(
+ match.initialCombinator,
+ replacementSelector.elements[0].value,
+ replacementSelector.elements[0].index,
+ replacementSelector.elements[0].currentFileInfo
+ );
+
+ if (match.pathIndex > currentSelectorPathIndex && currentSelectorPathElementIndex > 0) {
+ path[path.length - 1].elements = path[path.length - 1]
+ .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
+ currentSelectorPathElementIndex = 0;
+ currentSelectorPathIndex++;
+ }
+
+ newElements = selector.elements
+ .slice(currentSelectorPathElementIndex, match.index)
+ .concat([firstElement])
+ .concat(replacementSelector.elements.slice(1));
+
+ if (currentSelectorPathIndex === match.pathIndex && matchIndex > 0) {
+ path[path.length - 1].elements =
+ path[path.length - 1].elements.concat(newElements);
+ } else {
+ path = path.concat(selectorPath.slice(currentSelectorPathIndex, match.pathIndex));
+
+ path.push(new tree.Selector(
+ newElements
+ ));
+ }
+ currentSelectorPathIndex = match.endPathIndex;
+ currentSelectorPathElementIndex = match.endPathElementIndex;
+ if (currentSelectorPathElementIndex >= selectorPath[currentSelectorPathIndex].elements.length) {
+ currentSelectorPathElementIndex = 0;
+ currentSelectorPathIndex++;
+ }
+ }
+
+ if (currentSelectorPathIndex < selectorPath.length && currentSelectorPathElementIndex > 0) {
+ path[path.length - 1].elements = path[path.length - 1]
+ .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
+ currentSelectorPathIndex++;
+ }
+
+ path = path.concat(selectorPath.slice(currentSelectorPathIndex, selectorPath.length));
+ path = path.map(function (currentValue) {
+ // we can re-use elements here, because the visibility property matters only for selectors
+ var derived = currentValue.createDerived(currentValue.elements);
+ if (isVisible) {
+ derived.ensureVisibility();
+ } else {
+ derived.ensureInvisibility();
+ }
+ return derived;
+ });
+ return path;
+ },
+ visitMedia: function (mediaNode, visitArgs) {
+ var newAllExtends = mediaNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
+ newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, mediaNode.allExtends));
+ this.allExtendsStack.push(newAllExtends);
+ },
+ visitMediaOut: function (mediaNode) {
+ var lastIndex = this.allExtendsStack.length - 1;
+ this.allExtendsStack.length = lastIndex;
+ },
+ visitDirective: function (directiveNode, visitArgs) {
+ var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
+ newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, directiveNode.allExtends));
+ this.allExtendsStack.push(newAllExtends);
+ },
+ visitDirectiveOut: function (directiveNode) {
+ var lastIndex = this.allExtendsStack.length - 1;
+ this.allExtendsStack.length = lastIndex;
+ }
+};
+
+module.exports = ProcessExtendsVisitor;
+
+},{"../logger":33,"../tree":62,"./visitor":91}],85:[function(require,module,exports){
+function ImportSequencer(onSequencerEmpty) {
+ this.imports = [];
+ this.variableImports = [];
+ this._onSequencerEmpty = onSequencerEmpty;
+ this._currentDepth = 0;
+}
+
+ImportSequencer.prototype.addImport = function(callback) {
+ var importSequencer = this,
+ importItem = {
+ callback: callback,
+ args: null,
+ isReady: false
+ };
+ this.imports.push(importItem);
+ return function() {
+ importItem.args = Array.prototype.slice.call(arguments, 0);
+ importItem.isReady = true;
+ importSequencer.tryRun();
+ };
+};
+
+ImportSequencer.prototype.addVariableImport = function(callback) {
+ this.variableImports.push(callback);
+};
+
+ImportSequencer.prototype.tryRun = function() {
+ this._currentDepth++;
+ try {
+ while (true) {
+ while (this.imports.length > 0) {
+ var importItem = this.imports[0];
+ if (!importItem.isReady) {
+ return;
+ }
+ this.imports = this.imports.slice(1);
+ importItem.callback.apply(null, importItem.args);
+ }
+ if (this.variableImports.length === 0) {
+ break;
+ }
+ var variableImport = this.variableImports[0];
+ this.variableImports = this.variableImports.slice(1);
+ variableImport();
+ }
+ } finally {
+ this._currentDepth--;
+ }
+ if (this._currentDepth === 0 && this._onSequencerEmpty) {
+ this._onSequencerEmpty();
+ }
+};
+
+module.exports = ImportSequencer;
+
+},{}],86:[function(require,module,exports){
+var contexts = require("../contexts"),
+ Visitor = require("./visitor"),
+ ImportSequencer = require("./import-sequencer");
+
+var ImportVisitor = function(importer, finish) {
+
+ this._visitor = new Visitor(this);
+ this._importer = importer;
+ this._finish = finish;
+ this.context = new contexts.Eval();
+ this.importCount = 0;
+ this.onceFileDetectionMap = {};
+ this.recursionDetector = {};
+ this._sequencer = new ImportSequencer(this._onSequencerEmpty.bind(this));
+};
+
+ImportVisitor.prototype = {
+ isReplacing: false,
+ run: function (root) {
+ try {
+ // process the contents
+ this._visitor.visit(root);
+ }
+ catch(e) {
+ this.error = e;
+ }
+
+ this.isFinished = true;
+ this._sequencer.tryRun();
+ },
+ _onSequencerEmpty: function() {
+ if (!this.isFinished) {
+ return;
+ }
+ this._finish(this.error);
+ },
+ visitImport: function (importNode, visitArgs) {
+ var inlineCSS = importNode.options.inline;
+
+ if (!importNode.css || inlineCSS) {
+
+ var context = new contexts.Eval(this.context, this.context.frames.slice(0));
+ var importParent = context.frames[0];
+
+ this.importCount++;
+ if (importNode.isVariableImport()) {
+ this._sequencer.addVariableImport(this.processImportNode.bind(this, importNode, context, importParent));
+ } else {
+ this.processImportNode(importNode, context, importParent);
+ }
+ }
+ visitArgs.visitDeeper = false;
+ },
+ processImportNode: function(importNode, context, importParent) {
+ var evaldImportNode,
+ inlineCSS = importNode.options.inline;
+
+ try {
+ evaldImportNode = importNode.evalForImport(context);
+ } catch(e) {
+ if (!e.filename) { e.index = importNode.index; e.filename = importNode.currentFileInfo.filename; }
+ // attempt to eval properly and treat as css
+ importNode.css = true;
+ // if that fails, this error will be thrown
+ importNode.error = e;
+ }
+
+ if (evaldImportNode && (!evaldImportNode.css || inlineCSS)) {
+
+ if (evaldImportNode.options.multiple) {
+ context.importMultiple = true;
+ }
+
+ // try appending if we haven't determined if it is css or not
+ var tryAppendLessExtension = evaldImportNode.css === undefined;
+
+ for (var i = 0; i < importParent.rules.length; i++) {
+ if (importParent.rules[i] === importNode) {
+ importParent.rules[i] = evaldImportNode;
+ break;
+ }
+ }
+
+ var onImported = this.onImported.bind(this, evaldImportNode, context),
+ sequencedOnImported = this._sequencer.addImport(onImported);
+
+ this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.currentFileInfo,
+ evaldImportNode.options, sequencedOnImported);
+ } else {
+ this.importCount--;
+ if (this.isFinished) {
+ this._sequencer.tryRun();
+ }
+ }
+ },
+ onImported: function (importNode, context, e, root, importedAtRoot, fullPath) {
+ if (e) {
+ if (!e.filename) {
+ e.index = importNode.index; e.filename = importNode.currentFileInfo.filename;
+ }
+ this.error = e;
+ }
+
+ var importVisitor = this,
+ inlineCSS = importNode.options.inline,
+ isPlugin = importNode.options.plugin,
+ isOptional = importNode.options.optional,
+ duplicateImport = importedAtRoot || fullPath in importVisitor.recursionDetector;
+
+ if (!context.importMultiple) {
+ if (duplicateImport) {
+ importNode.skip = true;
+ } else {
+ importNode.skip = function() {
+ if (fullPath in importVisitor.onceFileDetectionMap) {
+ return true;
+ }
+ importVisitor.onceFileDetectionMap[fullPath] = true;
+ return false;
+ };
+ }
+ }
+
+ if (!fullPath && isOptional) {
+ importNode.skip = true;
+ }
+
+ if (root) {
+ importNode.root = root;
+ importNode.importedFilename = fullPath;
+
+ if (!inlineCSS && !isPlugin && (context.importMultiple || !duplicateImport)) {
+ importVisitor.recursionDetector[fullPath] = true;
+
+ var oldContext = this.context;
+ this.context = context;
+ try {
+ this._visitor.visit(root);
+ } catch (e) {
+ this.error = e;
+ }
+ this.context = oldContext;
+ }
+ }
+
+ importVisitor.importCount--;
+
+ if (importVisitor.isFinished) {
+ importVisitor._sequencer.tryRun();
+ }
+ },
+ visitRule: function (ruleNode, visitArgs) {
+ if (ruleNode.value.type === "DetachedRuleset") {
+ this.context.frames.unshift(ruleNode);
+ } else {
+ visitArgs.visitDeeper = false;
+ }
+ },
+ visitRuleOut : function(ruleNode) {
+ if (ruleNode.value.type === "DetachedRuleset") {
+ this.context.frames.shift();
+ }
+ },
+ visitDirective: function (directiveNode, visitArgs) {
+ this.context.frames.unshift(directiveNode);
+ },
+ visitDirectiveOut: function (directiveNode) {
+ this.context.frames.shift();
+ },
+ visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
+ this.context.frames.unshift(mixinDefinitionNode);
+ },
+ visitMixinDefinitionOut: function (mixinDefinitionNode) {
+ this.context.frames.shift();
+ },
+ visitRuleset: function (rulesetNode, visitArgs) {
+ this.context.frames.unshift(rulesetNode);
+ },
+ visitRulesetOut: function (rulesetNode) {
+ this.context.frames.shift();
+ },
+ visitMedia: function (mediaNode, visitArgs) {
+ this.context.frames.unshift(mediaNode.rules[0]);
+ },
+ visitMediaOut: function (mediaNode) {
+ this.context.frames.shift();
+ }
+};
+module.exports = ImportVisitor;
+
+},{"../contexts":11,"./import-sequencer":85,"./visitor":91}],87:[function(require,module,exports){
+var visitors = {
+ Visitor: require("./visitor"),
+ ImportVisitor: require('./import-visitor'),
+ MarkVisibleSelectorsVisitor: require("./set-tree-visibility-visitor"),
+ ExtendVisitor: require('./extend-visitor'),
+ JoinSelectorVisitor: require('./join-selector-visitor'),
+ ToCSSVisitor: require('./to-css-visitor')
+};
+
+module.exports = visitors;
+
+},{"./extend-visitor":84,"./import-visitor":86,"./join-selector-visitor":88,"./set-tree-visibility-visitor":89,"./to-css-visitor":90,"./visitor":91}],88:[function(require,module,exports){
+var Visitor = require("./visitor");
+
+var JoinSelectorVisitor = function() {
+ this.contexts = [[]];
+ this._visitor = new Visitor(this);
+};
+
+JoinSelectorVisitor.prototype = {
+ run: function (root) {
+ return this._visitor.visit(root);
+ },
+ visitRule: function (ruleNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+ visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
+ visitArgs.visitDeeper = false;
+ },
+
+ visitRuleset: function (rulesetNode, visitArgs) {
+ var context = this.contexts[this.contexts.length - 1],
+ paths = [], selectors;
+
+ this.contexts.push(paths);
+
+ if (! rulesetNode.root) {
+ selectors = rulesetNode.selectors;
+ if (selectors) {
+ selectors = selectors.filter(function(selector) { return selector.getIsOutput(); });
+ rulesetNode.selectors = selectors.length ? selectors : (selectors = null);
+ if (selectors) { rulesetNode.joinSelectors(paths, context, selectors); }
+ }
+ if (!selectors) { rulesetNode.rules = null; }
+ rulesetNode.paths = paths;
+ }
+ },
+ visitRulesetOut: function (rulesetNode) {
+ this.contexts.length = this.contexts.length - 1;
+ },
+ visitMedia: function (mediaNode, visitArgs) {
+ var context = this.contexts[this.contexts.length - 1];
+ mediaNode.rules[0].root = (context.length === 0 || context[0].multiMedia);
+ },
+ visitDirective: function (directiveNode, visitArgs) {
+ var context = this.contexts[this.contexts.length - 1];
+ if (directiveNode.rules && directiveNode.rules.length) {
+ directiveNode.rules[0].root = (directiveNode.isRooted || context.length === 0 || null);
+ }
+ }
+};
+
+module.exports = JoinSelectorVisitor;
+
+},{"./visitor":91}],89:[function(require,module,exports){
+var SetTreeVisibilityVisitor = function(visible) {
+ this.visible = visible;
+};
+SetTreeVisibilityVisitor.prototype.run = function(root) {
+ this.visit(root);
+};
+SetTreeVisibilityVisitor.prototype.visitArray = function(nodes) {
+ if (!nodes) {
+ return nodes;
+ }
+
+ var cnt = nodes.length, i;
+ for (i = 0; i < cnt; i++) {
+ this.visit(nodes[i]);
+ }
+ return nodes;
+};
+SetTreeVisibilityVisitor.prototype.visit = function(node) {
+ if (!node) {
+ return node;
+ }
+ if (node.constructor === Array) {
+ return this.visitArray(node);
+ }
+
+ if (!node.blocksVisibility || node.blocksVisibility()) {
+ return node;
+ }
+ if (this.visible) {
+ node.ensureVisibility();
+ } else {
+ node.ensureInvisibility();
+ }
+
+ node.accept(this);
+ return node;
+};
+module.exports = SetTreeVisibilityVisitor;
+},{}],90:[function(require,module,exports){
+var tree = require("../tree"),
+ Visitor = require("./visitor");
+
+var CSSVisitorUtils = function(context) {
+ this._visitor = new Visitor(this);
+ this._context = context;
+};
+
+CSSVisitorUtils.prototype = {
+ containsSilentNonBlockedChild: function(bodyRules) {
+ var rule;
+ if (bodyRules == null) {
+ return false;
+ }
+ for (var r = 0; r < bodyRules.length; r++) {
+ rule = bodyRules[r];
+ if (rule.isSilent && rule.isSilent(this._context) && !rule.blocksVisibility()) {
+ //the directive contains something that was referenced (likely by extend)
+ //therefore it needs to be shown in output too
+ return true;
+ }
+ }
+ return false;
+ },
+
+ keepOnlyVisibleChilds: function(owner) {
+ if (owner == null || owner.rules == null) {
+ return ;
+ }
+
+ owner.rules = owner.rules.filter(function(thing) {
+ return thing.isVisible();
+ }
+ );
+ },
+
+ isEmpty: function(owner) {
+ if (owner == null || owner.rules == null) {
+ return true;
+ }
+ return owner.rules.length === 0;
+ },
+
+ hasVisibleSelector: function(rulesetNode) {
+ if (rulesetNode == null || rulesetNode.paths == null) {
+ return false;
+ }
+ return rulesetNode.paths.length > 0;
+ },
+
+ resolveVisibility: function (node, originalRules) {
+ if (!node.blocksVisibility()) {
+ if (this.isEmpty(node) && !this.containsSilentNonBlockedChild(originalRules)) {
+ return ;
+ }
+
+ return node;
+ }
+
+ var compiledRulesBody = node.rules[0];
+ this.keepOnlyVisibleChilds(compiledRulesBody);
+
+ if (this.isEmpty(compiledRulesBody)) {
+ return ;
+ }
+
+ node.ensureVisibility();
+ node.removeVisibilityBlock();
+
+ return node;
+ },
+
+ isVisibleRuleset: function(rulesetNode) {
+ if (rulesetNode.firstRoot) {
+ return true;
+ }
+
+ if (this.isEmpty(rulesetNode)) {
+ return false;
+ }
+
+ if (!rulesetNode.root && !this.hasVisibleSelector(rulesetNode)) {
+ return false;
+ }
+
+ return true;
+ }
+
+};
+
+var ToCSSVisitor = function(context) {
+ this._visitor = new Visitor(this);
+ this._context = context;
+ this.utils = new CSSVisitorUtils(context);
+};
+
+ToCSSVisitor.prototype = {
+ isReplacing: true,
+ run: function (root) {
+ return this._visitor.visit(root);
+ },
+
+ visitRule: function (ruleNode, visitArgs) {
+ if (ruleNode.blocksVisibility() || ruleNode.variable) {
+ return;
+ }
+ return ruleNode;
+ },
+
+ visitMixinDefinition: function (mixinNode, visitArgs) {
+ // mixin definitions do not get eval'd - this means they keep state
+ // so we have to clear that state here so it isn't used if toCSS is called twice
+ mixinNode.frames = [];
+ },
+
+ visitExtend: function (extendNode, visitArgs) {
+ },
+
+ visitComment: function (commentNode, visitArgs) {
+ if (commentNode.blocksVisibility() || commentNode.isSilent(this._context)) {
+ return;
+ }
+ return commentNode;
+ },
+
+ visitMedia: function(mediaNode, visitArgs) {
+ var originalRules = mediaNode.rules[0].rules;
+ mediaNode.accept(this._visitor);
+ visitArgs.visitDeeper = false;
+
+ return this.utils.resolveVisibility(mediaNode, originalRules);
+ },
+
+ visitImport: function (importNode, visitArgs) {
+ if (importNode.blocksVisibility()) {
+ return ;
+ }
+ return importNode;
+ },
+
+ visitDirective: function(directiveNode, visitArgs) {
+ if (directiveNode.rules && directiveNode.rules.length) {
+ return this.visitDirectiveWithBody(directiveNode, visitArgs);
+ } else {
+ return this.visitDirectiveWithoutBody(directiveNode, visitArgs);
+ }
+ },
+
+ visitDirectiveWithBody: function(directiveNode, visitArgs) {
+ //if there is only one nested ruleset and that one has no path, then it is
+ //just fake ruleset
+ function hasFakeRuleset(directiveNode) {
+ var bodyRules = directiveNode.rules;
+ return bodyRules.length === 1 && (!bodyRules[0].paths || bodyRules[0].paths.length === 0);
+ }
+ function getBodyRules(directiveNode) {
+ var nodeRules = directiveNode.rules;
+ if (hasFakeRuleset(directiveNode)) {
+ return nodeRules[0].rules;
+ }
+
+ return nodeRules;
+ }
+ //it is still true that it is only one ruleset in array
+ //this is last such moment
+ //process childs
+ var originalRules = getBodyRules(directiveNode);
+ directiveNode.accept(this._visitor);
+ visitArgs.visitDeeper = false;
+
+ if (!this.utils.isEmpty(directiveNode)) {
+ this._mergeRules(directiveNode.rules[0].rules);
+ }
+
+ return this.utils.resolveVisibility(directiveNode, originalRules);
+ },
+
+ visitDirectiveWithoutBody: function(directiveNode, visitArgs) {
+ if (directiveNode.blocksVisibility()) {
+ return;
+ }
+
+ if (directiveNode.name === "@charset") {
+ // Only output the debug info together with subsequent @charset definitions
+ // a comment (or @media statement) before the actual @charset directive would
+ // be considered illegal css as it has to be on the first line
+ if (this.charset) {
+ if (directiveNode.debugInfo) {
+ var comment = new tree.Comment("/* " + directiveNode.toCSS(this._context).replace(/\n/g, "") + " */\n");
+ comment.debugInfo = directiveNode.debugInfo;
+ return this._visitor.visit(comment);
+ }
+ return;
+ }
+ this.charset = true;
+ }
+
+ return directiveNode;
+ },
+
+ checkValidNodes: function(rules, isRoot) {
+ if (!rules) {
+ return;
+ }
+
+ for (var i = 0; i < rules.length; i++) {
+ var ruleNode = rules[i];
+ if (isRoot && ruleNode instanceof tree.Rule && !ruleNode.variable) {
+ throw { message: "Properties must be inside selector blocks. They cannot be in the root",
+ index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+ }
+ if (ruleNode instanceof tree.Call) {
+ throw { message: "Function '" + ruleNode.name + "' is undefined",
+ index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+ }
+ if (ruleNode.type && !ruleNode.allowRoot) {
+ throw { message: ruleNode.type + " node returned by a function is not valid here",
+ index: ruleNode.index, filename: ruleNode.currentFileInfo && ruleNode.currentFileInfo.filename};
+ }
+ }
+ },
+
+ visitRuleset: function (rulesetNode, visitArgs) {
+ //at this point rulesets are nested into each other
+ var rule, rulesets = [];
+
+ this.checkValidNodes(rulesetNode.rules, rulesetNode.firstRoot);
+
+ if (! rulesetNode.root) {
+ //remove invisible paths
+ this._compileRulesetPaths(rulesetNode);
+
+ // remove rulesets from this ruleset body and compile them separately
+ var nodeRules = rulesetNode.rules, nodeRuleCnt = nodeRules ? nodeRules.length : 0;
+ for (var i = 0; i < nodeRuleCnt; ) {
+ rule = nodeRules[i];
+ if (rule && rule.rules) {
+ // visit because we are moving them out from being a child
+ rulesets.push(this._visitor.visit(rule));
+ nodeRules.splice(i, 1);
+ nodeRuleCnt--;
+ continue;
+ }
+ i++;
+ }
+ // accept the visitor to remove rules and refactor itself
+ // then we can decide nogw whether we want it or not
+ // compile body
+ if (nodeRuleCnt > 0) {
+ rulesetNode.accept(this._visitor);
+ } else {
+ rulesetNode.rules = null;
+ }
+ visitArgs.visitDeeper = false;
+
+ } else { //if (! rulesetNode.root) {
+ rulesetNode.accept(this._visitor);
+ visitArgs.visitDeeper = false;
+ }
+
+ if (rulesetNode.rules) {
+ this._mergeRules(rulesetNode.rules);
+ this._removeDuplicateRules(rulesetNode.rules);
+ }
+
+ //now decide whether we keep the ruleset
+ if (this.utils.isVisibleRuleset(rulesetNode)) {
+ rulesetNode.ensureVisibility();
+ rulesets.splice(0, 0, rulesetNode);
+ }
+
+ if (rulesets.length === 1) {
+ return rulesets[0];
+ }
+ return rulesets;
+ },
+
+ _compileRulesetPaths: function(rulesetNode) {
+ if (rulesetNode.paths) {
+ rulesetNode.paths = rulesetNode.paths
+ .filter(function(p) {
+ var i;
+ if (p[0].elements[0].combinator.value === ' ') {
+ p[0].elements[0].combinator = new(tree.Combinator)('');
+ }
+ for (i = 0; i < p.length; i++) {
+ if (p[i].isVisible() && p[i].getIsOutput()) {
+ return true;
+ }
+ }
+ return false;
+ });
+ }
+ },
+
+ _removeDuplicateRules: function(rules) {
+ if (!rules) { return; }
+
+ // remove duplicates
+ var ruleCache = {},
+ ruleList, rule, i;
+
+ for (i = rules.length - 1; i >= 0 ; i--) {
+ rule = rules[i];
+ if (rule instanceof tree.Rule) {
+ if (!ruleCache[rule.name]) {
+ ruleCache[rule.name] = rule;
+ } else {
+ ruleList = ruleCache[rule.name];
+ if (ruleList instanceof tree.Rule) {
+ ruleList = ruleCache[rule.name] = [ruleCache[rule.name].toCSS(this._context)];
+ }
+ var ruleCSS = rule.toCSS(this._context);
+ if (ruleList.indexOf(ruleCSS) !== -1) {
+ rules.splice(i, 1);
+ } else {
+ ruleList.push(ruleCSS);
+ }
+ }
+ }
+ }
+ },
+
+ _mergeRules: function (rules) {
+ if (!rules) { return; }
+
+ var groups = {},
+ parts,
+ rule,
+ key;
+
+ for (var i = 0; i < rules.length; i++) {
+ rule = rules[i];
+
+ if ((rule instanceof tree.Rule) && rule.merge) {
+ key = [rule.name,
+ rule.important ? "!" : ""].join(",");
+
+ if (!groups[key]) {
+ groups[key] = [];
+ } else {
+ rules.splice(i--, 1);
+ }
+
+ groups[key].push(rule);
+ }
+ }
+
+ Object.keys(groups).map(function (k) {
+
+ function toExpression(values) {
+ return new (tree.Expression)(values.map(function (p) {
+ return p.value;
+ }));
+ }
+
+ function toValue(values) {
+ return new (tree.Value)(values.map(function (p) {
+ return p;
+ }));
+ }
+
+ parts = groups[k];
+
+ if (parts.length > 1) {
+ rule = parts[0];
+ var spacedGroups = [];
+ var lastSpacedGroup = [];
+ parts.map(function (p) {
+ if (p.merge === "+") {
+ if (lastSpacedGroup.length > 0) {
+ spacedGroups.push(toExpression(lastSpacedGroup));
+ }
+ lastSpacedGroup = [];
+ }
+ lastSpacedGroup.push(p);
+ });
+ spacedGroups.push(toExpression(lastSpacedGroup));
+ rule.value = toValue(spacedGroups);
+ }
+ });
+ },
+
+ visitAnonymous: function(anonymousNode, visitArgs) {
+ if (anonymousNode.blocksVisibility()) {
+ return ;
+ }
+ anonymousNode.accept(this._visitor);
+ return anonymousNode;
+ }
+};
+
+module.exports = ToCSSVisitor;
+
+},{"../tree":62,"./visitor":91}],91:[function(require,module,exports){
+var tree = require("../tree");
+
+var _visitArgs = { visitDeeper: true },
+ _hasIndexed = false;
+
+function _noop(node) {
+ return node;
+}
+
+function indexNodeTypes(parent, ticker) {
+ // add .typeIndex to tree node types for lookup table
+ var key, child;
+ for (key in parent) {
+ if (parent.hasOwnProperty(key)) {
+ child = parent[key];
+ switch (typeof child) {
+ case "function":
+ // ignore bound functions directly on tree which do not have a prototype
+ // or aren't nodes
+ if (child.prototype && child.prototype.type) {
+ child.prototype.typeIndex = ticker++;
+ }
+ break;
+ case "object":
+ ticker = indexNodeTypes(child, ticker);
+ break;
+ }
+ }
+ }
+ return ticker;
+}
+
+var Visitor = function(implementation) {
+ this._implementation = implementation;
+ this._visitFnCache = [];
+
+ if (!_hasIndexed) {
+ indexNodeTypes(tree, 1);
+ _hasIndexed = true;
+ }
+};
+
+Visitor.prototype = {
+ visit: function(node) {
+ if (!node) {
+ return node;
+ }
+
+ var nodeTypeIndex = node.typeIndex;
+ if (!nodeTypeIndex) {
+ return node;
+ }
+
+ var visitFnCache = this._visitFnCache,
+ impl = this._implementation,
+ aryIndx = nodeTypeIndex << 1,
+ outAryIndex = aryIndx | 1,
+ func = visitFnCache[aryIndx],
+ funcOut = visitFnCache[outAryIndex],
+ visitArgs = _visitArgs,
+ fnName;
+
+ visitArgs.visitDeeper = true;
+
+ if (!func) {
+ fnName = "visit" + node.type;
+ func = impl[fnName] || _noop;
+ funcOut = impl[fnName + "Out"] || _noop;
+ visitFnCache[aryIndx] = func;
+ visitFnCache[outAryIndex] = funcOut;
+ }
+
+ if (func !== _noop) {
+ var newNode = func.call(impl, node, visitArgs);
+ if (impl.isReplacing) {
+ node = newNode;
+ }
+ }
+
+ if (visitArgs.visitDeeper && node && node.accept) {
+ node.accept(this);
+ }
+
+ if (funcOut != _noop) {
+ funcOut.call(impl, node);
+ }
+
+ return node;
+ },
+ visitArray: function(nodes, nonReplacing) {
+ if (!nodes) {
+ return nodes;
+ }
+
+ var cnt = nodes.length, i;
+
+ // Non-replacing
+ if (nonReplacing || !this._implementation.isReplacing) {
+ for (i = 0; i < cnt; i++) {
+ this.visit(nodes[i]);
+ }
+ return nodes;
+ }
+
+ // Replacing
+ var out = [];
+ for (i = 0; i < cnt; i++) {
+ var evald = this.visit(nodes[i]);
+ if (evald === undefined) { continue; }
+ if (!evald.splice) {
+ out.push(evald);
+ } else if (evald.length) {
+ this.flatten(evald, out);
+ }
+ }
+ return out;
+ },
+ flatten: function(arr, out) {
+ if (!out) {
+ out = [];
+ }
+
+ var cnt, i, item,
+ nestedCnt, j, nestedItem;
+
+ for (i = 0, cnt = arr.length; i < cnt; i++) {
+ item = arr[i];
+ if (item === undefined) {
+ continue;
+ }
+ if (!item.splice) {
+ out.push(item);
+ continue;
+ }
+
+ for (j = 0, nestedCnt = item.length; j < nestedCnt; j++) {
+ nestedItem = item[j];
+ if (nestedItem === undefined) {
+ continue;
+ }
+ if (!nestedItem.splice) {
+ out.push(nestedItem);
+ } else if (nestedItem.length) {
+ this.flatten(nestedItem, out);
+ }
+ }
+ }
+
+ return out;
+ }
+};
+module.exports = Visitor;
+
+},{"../tree":62}],92:[function(require,module,exports){
+"use strict";
+
+// rawAsap provides everything we need except exception management.
+var rawAsap = require("./raw");
+// RawTasks are recycled to reduce GC churn.
+var freeTasks = [];
+// We queue errors to ensure they are thrown in right order (FIFO).
+// Array-as-queue is good enough here, since we are just dealing with exceptions.
+var pendingErrors = [];
+var requestErrorThrow = rawAsap.makeRequestCallFromTimer(throwFirstError);
+
+function throwFirstError() {
+ if (pendingErrors.length) {
+ throw pendingErrors.shift();
+ }
+}
+
+/**
+ * Calls a task as soon as possible after returning, in its own event, with priority
+ * over other events like animation, reflow, and repaint. An error thrown from an
+ * event will not interrupt, nor even substantially slow down the processing of
+ * other events, but will be rather postponed to a lower priority event.
+ * @param {{call}} task A callable object, typically a function that takes no
+ * arguments.
+ */
+module.exports = asap;
+function asap(task) {
+ var rawTask;
+ if (freeTasks.length) {
+ rawTask = freeTasks.pop();
+ } else {
+ rawTask = new RawTask();
+ }
+ rawTask.task = task;
+ rawAsap(rawTask);
+}
+
+// We wrap tasks with recyclable task objects. A task object implements
+// `call`, just like a function.
+function RawTask() {
+ this.task = null;
+}
+
+// The sole purpose of wrapping the task is to catch the exception and recycle
+// the task object after its single use.
+RawTask.prototype.call = function () {
+ try {
+ this.task.call();
+ } catch (error) {
+ if (asap.onerror) {
+ // This hook exists purely for testing purposes.
+ // Its name will be periodically randomized to break any code that
+ // depends on its existence.
+ asap.onerror(error);
+ } else {
+ // In a web browser, exceptions are not fatal. However, to avoid
+ // slowing down the queue of pending tasks, we rethrow the error in a
+ // lower priority turn.
+ pendingErrors.push(error);
+ requestErrorThrow();
+ }
+ } finally {
+ this.task = null;
+ freeTasks[freeTasks.length] = this;
+ }
+};
+
+},{"./raw":93}],93:[function(require,module,exports){
+(function (global){
+"use strict";
+
+// Use the fastest means possible to execute a task in its own turn, with
+// priority over other events including IO, animation, reflow, and redraw
+// events in browsers.
+//
+// An exception thrown by a task will permanently interrupt the processing of
+// subsequent tasks. The higher level `asap` function ensures that if an
+// exception is thrown by a task, that the task queue will continue flushing as
+// soon as possible, but if you use `rawAsap` directly, you are responsible to
+// either ensure that no exceptions are thrown from your task, or to manually
+// call `rawAsap.requestFlush` if an exception is thrown.
+module.exports = rawAsap;
+function rawAsap(task) {
+ if (!queue.length) {
+ requestFlush();
+ flushing = true;
+ }
+ // Equivalent to push, but avoids a function call.
+ queue[queue.length] = task;
+}
+
+var queue = [];
+// Once a flush has been requested, no further calls to `requestFlush` are
+// necessary until the next `flush` completes.
+var flushing = false;
+// `requestFlush` is an implementation-specific method that attempts to kick
+// off a `flush` event as quickly as possible. `flush` will attempt to exhaust
+// the event queue before yielding to the browser's own event loop.
+var requestFlush;
+// The position of the next task to execute in the task queue. This is
+// preserved between calls to `flush` so that it can be resumed if
+// a task throws an exception.
+var index = 0;
+// If a task schedules additional tasks recursively, the task queue can grow
+// unbounded. To prevent memory exhaustion, the task queue will periodically
+// truncate already-completed tasks.
+var capacity = 1024;
+
+// The flush function processes all tasks that have been scheduled with
+// `rawAsap` unless and until one of those tasks throws an exception.
+// If a task throws an exception, `flush` ensures that its state will remain
+// consistent and will resume where it left off when called again.
+// However, `flush` does not make any arrangements to be called again if an
+// exception is thrown.
+function flush() {
+ while (index < queue.length) {
+ var currentIndex = index;
+ // Advance the index before calling the task. This ensures that we will
+ // begin flushing on the next task the task throws an error.
+ index = index + 1;
+ queue[currentIndex].call();
+ // Prevent leaking memory for long chains of recursive calls to `asap`.
+ // If we call `asap` within tasks scheduled by `asap`, the queue will
+ // grow, but to avoid an O(n) walk for every task we execute, we don't
+ // shift tasks off the queue after they have been executed.
+ // Instead, we periodically shift 1024 tasks off the queue.
+ if (index > capacity) {
+ // Manually shift all values starting at the index back to the
+ // beginning of the queue.
+ for (var scan = 0, newLength = queue.length - index; scan < newLength; scan++) {
+ queue[scan] = queue[scan + index];
+ }
+ queue.length -= index;
+ index = 0;
+ }
+ }
+ queue.length = 0;
+ index = 0;
+ flushing = false;
+}
+
+// `requestFlush` is implemented using a strategy based on data collected from
+// every available SauceLabs Selenium web driver worker at time of writing.
+// https://docs.google.com/spreadsheets/d/1mG-5UYGup5qxGdEMWkhP6BWCz053NUb2E1QoUTU16uA/edit#gid=783724593
+
+// Safari 6 and 6.1 for desktop, iPad, and iPhone are the only browsers that
+// have WebKitMutationObserver but not un-prefixed MutationObserver.
+// Must use `global` or `self` instead of `window` to work in both frames and web
+// workers. `global` is a provision of Browserify, Mr, Mrs, or Mop.
+
+/* globals self */
+var scope = typeof global !== "undefined" ? global : self;
+var BrowserMutationObserver = scope.MutationObserver || scope.WebKitMutationObserver;
+
+// MutationObservers are desirable because they have high priority and work
+// reliably everywhere they are implemented.
+// They are implemented in all modern browsers.
+//
+// - Android 4-4.3
+// - Chrome 26-34
+// - Firefox 14-29
+// - Internet Explorer 11
+// - iPad Safari 6-7.1
+// - iPhone Safari 7-7.1
+// - Safari 6-7
+if (typeof BrowserMutationObserver === "function") {
+ requestFlush = makeRequestCallFromMutationObserver(flush);
+
+// MessageChannels are desirable because they give direct access to the HTML
+// task queue, are implemented in Internet Explorer 10, Safari 5.0-1, and Opera
+// 11-12, and in web workers in many engines.
+// Although message channels yield to any queued rendering and IO tasks, they
+// would be better than imposing the 4ms delay of timers.
+// However, they do not work reliably in Internet Explorer or Safari.
+
+// Internet Explorer 10 is the only browser that has setImmediate but does
+// not have MutationObservers.
+// Although setImmediate yields to the browser's renderer, it would be
+// preferrable to falling back to setTimeout since it does not have
+// the minimum 4ms penalty.
+// Unfortunately there appears to be a bug in Internet Explorer 10 Mobile (and
+// Desktop to a lesser extent) that renders both setImmediate and
+// MessageChannel useless for the purposes of ASAP.
+// https://github.com/kriskowal/q/issues/396
+
+// Timers are implemented universally.
+// We fall back to timers in workers in most engines, and in foreground
+// contexts in the following browsers.
+// However, note that even this simple case requires nuances to operate in a
+// broad spectrum of browsers.
+//
+// - Firefox 3-13
+// - Internet Explorer 6-9
+// - iPad Safari 4.3
+// - Lynx 2.8.7
+} else {
+ requestFlush = makeRequestCallFromTimer(flush);
+}
+
+// `requestFlush` requests that the high priority event queue be flushed as
+// soon as possible.
+// This is useful to prevent an error thrown in a task from stalling the event
+// queue if the exception handled by Node.js’s
+// `process.on("uncaughtException")` or by a domain.
+rawAsap.requestFlush = requestFlush;
+
+// To request a high priority event, we induce a mutation observer by toggling
+// the text of a text node between "1" and "-1".
+function makeRequestCallFromMutationObserver(callback) {
+ var toggle = 1;
+ var observer = new BrowserMutationObserver(callback);
+ var node = document.createTextNode("");
+ observer.observe(node, {characterData: true});
+ return function requestCall() {
+ toggle = -toggle;
+ node.data = toggle;
+ };
+}
+
+// The message channel technique was discovered by Malte Ubl and was the
+// original foundation for this library.
+// http://www.nonblocking.io/2011/06/windownexttick.html
+
+// Safari 6.0.5 (at least) intermittently fails to create message ports on a
+// page's first load. Thankfully, this version of Safari supports
+// MutationObservers, so we don't need to fall back in that case.
+
+// function makeRequestCallFromMessageChannel(callback) {
+// var channel = new MessageChannel();
+// channel.port1.onmessage = callback;
+// return function requestCall() {
+// channel.port2.postMessage(0);
+// };
+// }
+
+// For reasons explained above, we are also unable to use `setImmediate`
+// under any circumstances.
+// Even if we were, there is another bug in Internet Explorer 10.
+// It is not sufficient to assign `setImmediate` to `requestFlush` because
+// `setImmediate` must be called *by name* and therefore must be wrapped in a
+// closure.
+// Never forget.
+
+// function makeRequestCallFromSetImmediate(callback) {
+// return function requestCall() {
+// setImmediate(callback);
+// };
+// }
+
+// Safari 6.0 has a problem where timers will get lost while the user is
+// scrolling. This problem does not impact ASAP because Safari 6.0 supports
+// mutation observers, so that implementation is used instead.
+// However, if we ever elect to use timers in Safari, the prevalent work-around
+// is to add a scroll event listener that calls for a flush.
+
+// `setTimeout` does not call the passed callback if the delay is less than
+// approximately 7 in web workers in Firefox 8 through 18, and sometimes not
+// even then.
+
+function makeRequestCallFromTimer(callback) {
+ return function requestCall() {
+ // We dispatch a timeout with a specified delay of 0 for engines that
+ // can reliably accommodate that request. This will usually be snapped
+ // to a 4 milisecond delay, but once we're flushing, there's no delay
+ // between events.
+ var timeoutHandle = setTimeout(handleTimer, 0);
+ // However, since this timer gets frequently dropped in Firefox
+ // workers, we enlist an interval handle that will try to fire
+ // an event 20 times per second until it succeeds.
+ var intervalHandle = setInterval(handleTimer, 50);
+
+ function handleTimer() {
+ // Whichever timer succeeds will cancel both timers and
+ // execute the callback.
+ clearTimeout(timeoutHandle);
+ clearInterval(intervalHandle);
+ callback();
+ }
+ };
+}
+
+// This is for `asap.js` only.
+// Its name will be periodically randomized to break any code that depends on
+// its existence.
+rawAsap.makeRequestCallFromTimer = makeRequestCallFromTimer;
+
+// ASAP was originally a nextTick shim included in Q. This was factored out
+// into this ASAP package. It was later adapted to RSVP which made further
+// amendments. These decisions, particularly to marginalize MessageChannel and
+// to capture the MutationObserver implementation in a closure, were integrated
+// back into ASAP proper.
+// https://github.com/tildeio/rsvp.js/blob/cddf7232546a9cf858524b75cde6f9edf72620a7/lib/rsvp/asap.js
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],94:[function(require,module,exports){
+'use strict';
+
+var asap = require('asap/raw');
+
+function noop() {}
+
+// States:
+//
+// 0 - pending
+// 1 - fulfilled with _value
+// 2 - rejected with _value
+// 3 - adopted the state of another promise, _value
+//
+// once the state is no longer pending (0) it is immutable
+
+// All `_` prefixed properties will be reduced to `_{random number}`
+// at build time to obfuscate them and discourage their use.
+// We don't use symbols or Object.defineProperty to fully hide them
+// because the performance isn't good enough.
+
+
+// to avoid using try/catch inside critical functions, we
+// extract them to here.
+var LAST_ERROR = null;
+var IS_ERROR = {};
+function getThen(obj) {
+ try {
+ return obj.then;
+ } catch (ex) {
+ LAST_ERROR = ex;
+ return IS_ERROR;
+ }
+}
+
+function tryCallOne(fn, a) {
+ try {
+ return fn(a);
+ } catch (ex) {
+ LAST_ERROR = ex;
+ return IS_ERROR;
+ }
+}
+function tryCallTwo(fn, a, b) {
+ try {
+ fn(a, b);
+ } catch (ex) {
+ LAST_ERROR = ex;
+ return IS_ERROR;
+ }
+}
+
+module.exports = Promise;
+
+function Promise(fn) {
+ if (typeof this !== 'object') {
+ throw new TypeError('Promises must be constructed via new');
+ }
+ if (typeof fn !== 'function') {
+ throw new TypeError('Promise constructor\'s argument is not a function');
+ }
+ this._40 = 0;
+ this._65 = 0;
+ this._55 = null;
+ this._72 = null;
+ if (fn === noop) return;
+ doResolve(fn, this);
+}
+Promise._37 = null;
+Promise._87 = null;
+Promise._61 = noop;
+
+Promise.prototype.then = function(onFulfilled, onRejected) {
+ if (this.constructor !== Promise) {
+ return safeThen(this, onFulfilled, onRejected);
+ }
+ var res = new Promise(noop);
+ handle(this, new Handler(onFulfilled, onRejected, res));
+ return res;
+};
+
+function safeThen(self, onFulfilled, onRejected) {
+ return new self.constructor(function (resolve, reject) {
+ var res = new Promise(noop);
+ res.then(resolve, reject);
+ handle(self, new Handler(onFulfilled, onRejected, res));
+ });
+}
+function handle(self, deferred) {
+ while (self._65 === 3) {
+ self = self._55;
+ }
+ if (Promise._37) {
+ Promise._37(self);
+ }
+ if (self._65 === 0) {
+ if (self._40 === 0) {
+ self._40 = 1;
+ self._72 = deferred;
+ return;
+ }
+ if (self._40 === 1) {
+ self._40 = 2;
+ self._72 = [self._72, deferred];
+ return;
+ }
+ self._72.push(deferred);
+ return;
+ }
+ handleResolved(self, deferred);
+}
+
+function handleResolved(self, deferred) {
+ asap(function() {
+ var cb = self._65 === 1 ? deferred.onFulfilled : deferred.onRejected;
+ if (cb === null) {
+ if (self._65 === 1) {
+ resolve(deferred.promise, self._55);
+ } else {
+ reject(deferred.promise, self._55);
+ }
+ return;
+ }
+ var ret = tryCallOne(cb, self._55);
+ if (ret === IS_ERROR) {
+ reject(deferred.promise, LAST_ERROR);
+ } else {
+ resolve(deferred.promise, ret);
+ }
+ });
+}
+function resolve(self, newValue) {
+ // Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure
+ if (newValue === self) {
+ return reject(
+ self,
+ new TypeError('A promise cannot be resolved with itself.')
+ );
+ }
+ if (
+ newValue &&
+ (typeof newValue === 'object' || typeof newValue === 'function')
+ ) {
+ var then = getThen(newValue);
+ if (then === IS_ERROR) {
+ return reject(self, LAST_ERROR);
+ }
+ if (
+ then === self.then &&
+ newValue instanceof Promise
+ ) {
+ self._65 = 3;
+ self._55 = newValue;
+ finale(self);
+ return;
+ } else if (typeof then === 'function') {
+ doResolve(then.bind(newValue), self);
+ return;
+ }
+ }
+ self._65 = 1;
+ self._55 = newValue;
+ finale(self);
+}
+
+function reject(self, newValue) {
+ self._65 = 2;
+ self._55 = newValue;
+ if (Promise._87) {
+ Promise._87(self, newValue);
+ }
+ finale(self);
+}
+function finale(self) {
+ if (self._40 === 1) {
+ handle(self, self._72);
+ self._72 = null;
+ }
+ if (self._40 === 2) {
+ for (var i = 0; i < self._72.length; i++) {
+ handle(self, self._72[i]);
+ }
+ self._72 = null;
+ }
+}
+
+function Handler(onFulfilled, onRejected, promise){
+ this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null;
+ this.onRejected = typeof onRejected === 'function' ? onRejected : null;
+ this.promise = promise;
+}
+
+/**
+ * Take a potentially misbehaving resolver function and make sure
+ * onFulfilled and onRejected are only called once.
+ *
+ * Makes no guarantees about asynchrony.
+ */
+function doResolve(fn, promise) {
+ var done = false;
+ var res = tryCallTwo(fn, function (value) {
+ if (done) return;
+ done = true;
+ resolve(promise, value);
+ }, function (reason) {
+ if (done) return;
+ done = true;
+ reject(promise, reason);
+ });
+ if (!done && res === IS_ERROR) {
+ done = true;
+ reject(promise, LAST_ERROR);
+ }
+}
+
+},{"asap/raw":93}],95:[function(require,module,exports){
+'use strict';
+
+//This file contains the ES6 extensions to the core Promises/A+ API
+
+var Promise = require('./core.js');
+
+module.exports = Promise;
+
+/* Static Functions */
+
+var TRUE = valuePromise(true);
+var FALSE = valuePromise(false);
+var NULL = valuePromise(null);
+var UNDEFINED = valuePromise(undefined);
+var ZERO = valuePromise(0);
+var EMPTYSTRING = valuePromise('');
+
+function valuePromise(value) {
+ var p = new Promise(Promise._61);
+ p._65 = 1;
+ p._55 = value;
+ return p;
+}
+Promise.resolve = function (value) {
+ if (value instanceof Promise) return value;
+
+ if (value === null) return NULL;
+ if (value === undefined) return UNDEFINED;
+ if (value === true) return TRUE;
+ if (value === false) return FALSE;
+ if (value === 0) return ZERO;
+ if (value === '') return EMPTYSTRING;
+
+ if (typeof value === 'object' || typeof value === 'function') {
+ try {
+ var then = value.then;
+ if (typeof then === 'function') {
+ return new Promise(then.bind(value));
+ }
+ } catch (ex) {
+ return new Promise(function (resolve, reject) {
+ reject(ex);
+ });
+ }
+ }
+ return valuePromise(value);
+};
+
+Promise.all = function (arr) {
+ var args = Array.prototype.slice.call(arr);
+
+ return new Promise(function (resolve, reject) {
+ if (args.length === 0) return resolve([]);
+ var remaining = args.length;
+ function res(i, val) {
+ if (val && (typeof val === 'object' || typeof val === 'function')) {
+ if (val instanceof Promise && val.then === Promise.prototype.then) {
+ while (val._65 === 3) {
+ val = val._55;
+ }
+ if (val._65 === 1) return res(i, val._55);
+ if (val._65 === 2) reject(val._55);
+ val.then(function (val) {
+ res(i, val);
+ }, reject);
+ return;
+ } else {
+ var then = val.then;
+ if (typeof then === 'function') {
+ var p = new Promise(then.bind(val));
+ p.then(function (val) {
+ res(i, val);
+ }, reject);
+ return;
+ }
+ }
+ }
+ args[i] = val;
+ if (--remaining === 0) {
+ resolve(args);
+ }
+ }
+ for (var i = 0; i < args.length; i++) {
+ res(i, args[i]);
+ }
+ });
+};
+
+Promise.reject = function (value) {
+ return new Promise(function (resolve, reject) {
+ reject(value);
+ });
+};
+
+Promise.race = function (values) {
+ return new Promise(function (resolve, reject) {
+ values.forEach(function(value){
+ Promise.resolve(value).then(resolve, reject);
+ });
+ });
+};
+
+/* Prototype Methods */
+
+Promise.prototype['catch'] = function (onRejected) {
+ return this.then(null, onRejected);
+};
+
+},{"./core.js":94}],96:[function(require,module,exports){
+// should work in any browser without browserify
+
+if (typeof Promise.prototype.done !== 'function') {
+ Promise.prototype.done = function (onFulfilled, onRejected) {
+ var self = arguments.length ? this.then.apply(this, arguments) : this
+ self.then(null, function (err) {
+ setTimeout(function () {
+ throw err
+ }, 0)
+ })
+ }
+}
+},{}],97:[function(require,module,exports){
+// not "use strict" so we can declare global "Promise"
+
+var asap = require('asap');
+
+if (typeof Promise === 'undefined') {
+ Promise = require('./lib/core.js')
+ require('./lib/es6-extensions.js')
+}
+
+require('./polyfill-done.js');
+
+},{"./lib/core.js":94,"./lib/es6-extensions.js":95,"./polyfill-done.js":96,"asap":92}]},{},[2])(2)
+});
\ No newline at end of file
projects / roojs1 / commitdiff