MediaWiki:Gadget-LessSrc.js
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/*!
* Less - Leaner CSS v3.9.0
* http://lesscss.org
*
* Copyright (c) 2009-2018, Alexis Sellier <[email protected]>
* 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;
}
if (options.relativeUrls) {
options.rewriteUrls = 'all';
}
};
},{"./browser":3,"./utils":11}],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 */
// TODO - consider switching this out for a recommendation for this polyfill?
// <script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
// Browsers have good Promise support
require('promise/polyfill');
var options = require('../less/default-options')();
if (window.less) {
for (key in window.less) {
if (window.less.hasOwnProperty(key)) {
options[key] = window.less[key];
}
}
}
require('./add-default-options')(window, options);
options.plugins = options.plugins || [];
if (window.LESS_PLUGINS) {
options.plugins = options.plugins.concat(window.LESS_PLUGINS);
}
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 hiding 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);
}
},{"../less/default-options":17,"./add-default-options":1,"./index":8,"promise/polyfill":104}],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":11}],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 || {};
vars = vars || "{}"; // if not set, treat as the JSON representation of an empty object
if (timestamp && webInfo.lastModified &&
(new Date(webInfo.lastModified).valueOf() ===
new Date(timestamp).valueOf()) &&
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.line) {
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.line) {
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":11}],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
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 = new XMLHttpRequest();
var async = options.isFileProtocol ? options.fileAsync : true;
if (typeof xhr.overrideMimeType === 'function') {
xhr.overrideMimeType('text/css');
}
// begin dev wiki change
if ( url.charAt(0) == '/' ) {
// prepend with full host url so that the next check works
url = window.location.protocol + '//' + window.location.host + url
}
if ( url.indexOf( window.location.host ) > -1 ) {
url += '?action=raw&maxage=0&smaxage=0';
}
mw.log( url );
// end dev wiki change
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) {
// begin dev wiki change
if ( xhr.status === 404 ) {
mw.hook('less.404').fire(url);
} else if ( xhr.status === 200 ) {
mw.hook('less.200').fire(url);
}
// end dev wiki change
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) {
// TODO: Add prefix support like less-node?
// What about multiple paths?
if (currentDirectory && !this.isPathAbsolute(filename)) {
filename = currentDirectory + filename;
}
filename = options.ext ? this.tryAppendExtension(filename, options.ext) : 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;
var self = this;
return new Promise(function(resolve, reject) {
if (options.useFileCache && fileCache[href]) {
try {
var lessText = fileCache[href];
return resolve({ contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
} catch (e) {
return reject({ filename: href, message: 'Error loading file ' + href + ' error was ' + e.message });
}
}
self.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
// per file cache
fileCache[href] = data;
// Use remote copy (re-parse)
resolve({ contents: data, filename: href, webInfo: { lastModified: lastModified }});
}, function doXHRError(status, url) {
reject({ type: 'File', message: '\'' + url + '\' wasn\'t found (' + status + ')', href: href });
});
});
};
return FileManager;
};
},{"../less/environment/abstract-file-manager.js":18}],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":27}],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')();
less.options = options;
var environment = less.environment,
FileManager = require('./file-manager')(options, less.logger),
fileManager = new FileManager();
environment.addFileManager(fileManager);
less.FileManager = FileManager;
less.PluginLoader = require('./plugin-loader');
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 - Deprecate?
if (options.functions) {
less.functions.functionRegistry.addMultiple(options.functions);
}
var typePattern = /^text\/(x-)?less$/;
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,
rewriteUrls: instanceOptions.rewriteUrls
};
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 {
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)
.then(function(loadedFile) {
loadInitialFileCallback(loadedFile);
}).catch(function(err) {
console.log(err);
callback(err);
});
}
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":37,"./browser":3,"./cache":4,"./error-reporting":5,"./file-manager":6,"./image-size":7,"./log-listener":9,"./plugin-loader":10,"./utils":11}],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){
// TODO: Add tests for browser @plugin
/* global window */
var AbstractPluginLoader = require('../less/environment/abstract-plugin-loader.js');
/**
* Browser Plugin Loader
*/
var PluginLoader = function(less) {
this.less = less;
// Should we shim this.require for browser? Probably not?
};
PluginLoader.prototype = new AbstractPluginLoader();
PluginLoader.prototype.loadPlugin = function(filename, basePath, context, environment, fileManager) {
return new Promise(function(fulfill, reject) {
fileManager.loadFile(filename, basePath, context, environment)
.then(fulfill).catch(reject);
});
};
module.exports = PluginLoader;
},{"../less/environment/abstract-plugin-loader.js":19}],11:[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 (_) {}
}
}
}
}
};
},{}],12:[function(require,module,exports){
module.exports = {
Math: {
ALWAYS: 0,
PARENS_DIVISION: 1,
PARENS: 2,
STRICT_LEGACY: 3
},
RewriteUrls: {
OFF: 0,
LOCAL: 1,
ALL: 2
}
};
},{}],13:[function(require,module,exports){
var contexts = {};
module.exports = contexts;
var Constants = require('./constants');
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
'rewriteUrls', // 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)
'math', // 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 Inline JavaScript is enabled. if undefined, defaults to false
'pluginManager', // Used as the plugin manager for the session
'importantScope', // used to bubble up !important statements
'rewriteUrls' // option - whether to adjust URL's to be relative
];
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.enterCalc = function () {
if (!this.calcStack) {
this.calcStack = [];
}
this.calcStack.push(true);
this.inCalc = true;
};
contexts.Eval.prototype.exitCalc = function () {
this.calcStack.pop();
if (!this.calcStack) {
this.inCalc = false;
}
};
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.inCalc = false;
contexts.Eval.prototype.mathOn = true;
contexts.Eval.prototype.isMathOn = function (op) {
if (!this.mathOn) {
return false;
}
if (op === '/' && this.math !== Constants.Math.ALWAYS && (!this.parensStack || !this.parensStack.length)) {
return false;
}
if (this.math > Constants.Math.PARENS_DIVISION) {
return this.parensStack && this.parensStack.length;
}
return true;
};
contexts.Eval.prototype.pathRequiresRewrite = function (path) {
var isRelative = this.rewriteUrls === Constants.RewriteUrls.LOCAL ? isPathLocalRelative : isPathRelative;
return isRelative(path);
};
contexts.Eval.prototype.rewritePath = function (path, rootpath) {
var newPath;
rootpath = rootpath || '';
newPath = this.normalizePath(rootpath + path);
// If a path was explicit relative and the rootpath was not an absolute path
// we must ensure that the new path is also explicit relative.
if (isPathLocalRelative(path) &&
isPathRelative(rootpath) &&
isPathLocalRelative(newPath) === false) {
newPath = './' + newPath;
}
return newPath;
};
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('/');
};
function isPathRelative(path) {
return !/^(?:[a-z-]+:|\/|#)/i.test(path);
}
function isPathLocalRelative(path) {
return path.charAt(0) === '.';
}
// todo - do the same for the toCSS ?
},{"./constants":12}],14:[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'
};
},{}],15:[function(require,module,exports){
module.exports = {
colors: require('./colors'),
unitConversions: require('./unit-conversions')
};
},{"./colors":14,"./unit-conversions":16}],16:[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
}
};
},{}],17:[function(require,module,exports){
// Export a new default each time
module.exports = function() {
return {
/* Inline Javascript - @plugin still allowed */
javascriptEnabled: false,
/* Outputs a makefile import dependency list to stdout. */
depends: false,
/* (DEPRECATED) Compress using less built-in compression.
* This does an okay job but does not utilise all the tricks of
* dedicated css compression. */
compress: false,
/* Runs the less parser and just reports errors without any output. */
lint: false,
/* Sets available include paths.
* If the file in an @import rule does not exist at that exact location,
* less will look for it at the location(s) passed to this option.
* You might use this for instance to specify a path to a library which
* you want to be referenced simply and relatively in the less files. */
paths: [],
/* color output in the terminal */
color: true,
/* The strictImports controls whether the compiler will allow an @import inside of either
* @media blocks or (a later addition) other selector blocks.
* See: https://github.com/less/less.js/issues/656 */
strictImports: false,
/* Allow Imports from Insecure HTTPS Hosts */
insecure: false,
/* Allows you to add a path to every generated import and url in your css.
* This does not affect less import statements that are processed, just ones
* that are left in the output css. */
rootpath: '',
/* By default URLs are kept as-is, so if you import a file in a sub-directory
* that references an image, exactly the same URL will be output in the css.
* This option allows you to re-write URL's in imported files so that the
* URL is always relative to the base imported file */
rewriteUrls: false,
/* Compatibility with IE8. Used for limiting data-uri length */
ieCompat: false, // true until 3.0
/* How to process math
* 0 always - eagerly try to solve all operations
* 1 parens-division - require parens for division "/"
* 2 parens | strict - require parens for all operations
* 3 strict-legacy - legacy strict behavior (super-strict)
*/
math: 0,
/* Without this option, less attempts to guess at the output unit when it does maths. */
strictUnits: false,
/* Effectively the declaration is put at the top of your base Less file,
* meaning it can be used but it also can be overridden if this variable
* is defined in the file. */
globalVars: null,
/* As opposed to the global variable option, this puts the declaration at the
* end of your base file, meaning it will override anything defined in your Less file. */
modifyVars: null,
/* This option allows you to specify a argument to go on to every URL. */
urlArgs: ''
}
}
},{}],18:[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);
};
// TODO: pull out / replace?
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 = {}, rawDirectories = [], 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]) {
rawDirectories = urlParts[3].replace(/\\/g, '/').split('/');
// collapse '..' and skip '.'
for (i = 0; i < rawDirectories.length; i++) {
if (rawDirectories[i] === '..') {
directories.pop();
}
else if (rawDirectories[i] !== '.') {
directories.push(rawDirectories[i]);
}
}
}
returner.hostPart = urlParts[1];
returner.directories = directories;
returner.rawPath = (urlParts[1] || '') + rawDirectories.join('/');
returner.path = (urlParts[1] || '') + directories.join('/');
returner.filename = urlParts[4];
returner.fileUrl = returner.path + (urlParts[4] || '');
returner.url = returner.fileUrl + (urlParts[5] || '');
return returner;
};
module.exports = abstractFileManager;
},{}],19:[function(require,module,exports){
var functionRegistry = require('../functions/function-registry'),
LessError = require('../less-error');
var AbstractPluginLoader = function() {
// Implemented by Node.js plugin loader
this.require = function() {
return null;
}
};
AbstractPluginLoader.prototype.evalPlugin = function(contents, context, imports, pluginOptions, fileInfo) {
var loader,
registry,
pluginObj,
localModule,
pluginManager,
filename,
result;
pluginManager = context.pluginManager;
if (fileInfo) {
if (typeof fileInfo === 'string') {
filename = fileInfo;
}
else {
filename = fileInfo.filename;
}
}
var shortname = (new this.less.FileManager()).extractUrlParts(filename).filename;
if (filename) {
pluginObj = pluginManager.get(filename);
if (pluginObj) {
result = this.trySetOptions(pluginObj, filename, shortname, pluginOptions);
if (result) {
return result;
}
try {
if (pluginObj.use) {
pluginObj.use.call(this.context, pluginObj);
}
}
catch (e) {
e.message = e.message || 'Error during @plugin call';
return new LessError(e, imports, filename);
}
return pluginObj;
}
}
localModule = {
exports: {},
pluginManager: pluginManager,
fileInfo: fileInfo
};
registry = functionRegistry.create();
var registerPlugin = function(obj) {
pluginObj = obj;
};
try {
loader = new Function('module', 'require', 'registerPlugin', 'functions', 'tree', 'less', 'fileInfo', contents);
loader(localModule, this.require(filename), registerPlugin, registry, this.less.tree, this.less, fileInfo);
}
catch (e) {
return new LessError(e, imports, filename);
}
if (!pluginObj) {
pluginObj = localModule.exports;
}
pluginObj = this.validatePlugin(pluginObj, filename, shortname);
if (pluginObj instanceof LessError) {
return pluginObj;
}
if (pluginObj) {
pluginObj.imports = imports;
pluginObj.filename = filename;
// For < 3.x (or unspecified minVersion) - setOptions() before install()
if (!pluginObj.minVersion || this.compareVersion('3.0.0', pluginObj.minVersion) < 0) {
result = this.trySetOptions(pluginObj, filename, shortname, pluginOptions);
if (result) {
return result;
}
}
// Run on first load
pluginManager.addPlugin(pluginObj, fileInfo.filename, registry);
pluginObj.functions = registry.getLocalFunctions();
// Need to call setOptions again because the pluginObj might have functions
result = this.trySetOptions(pluginObj, filename, shortname, pluginOptions);
if (result) {
return result;
}
// Run every @plugin call
try {
if (pluginObj.use) {
pluginObj.use.call(this.context, pluginObj);
}
}
catch (e) {
e.message = e.message || 'Error during @plugin call';
return new LessError(e, imports, filename);
}
}
else {
return new LessError({ message: 'Not a valid plugin' }, imports, filename);
}
return pluginObj;
};
AbstractPluginLoader.prototype.trySetOptions = function(plugin, filename, name, options) {
if (options && !plugin.setOptions) {
return new LessError({
message: 'Options have been provided but the plugin ' +
name + ' does not support any options.'
});
}
try {
plugin.setOptions && plugin.setOptions(options);
}
catch (e) {
return new LessError(e);
}
};
AbstractPluginLoader.prototype.validatePlugin = function(plugin, filename, name) {
if (plugin) {
// support plugins being a function
// so that the plugin can be more usable programmatically
if (typeof plugin === 'function') {
plugin = new plugin();
}
if (plugin.minVersion) {
if (this.compareVersion(plugin.minVersion, this.less.version) < 0) {
return new LessError({
message: 'Plugin ' + name + ' requires version ' +
this.versionToString(plugin.minVersion)
});
}
}
return plugin;
}
return null;
};
AbstractPluginLoader.prototype.compareVersion = function(aVersion, bVersion) {
if (typeof aVersion === 'string') {
aVersion = aVersion.match(/^(\d+)\.?(\d+)?\.?(\d+)?/);
aVersion.shift();
}
for (var i = 0; i < aVersion.length; i++) {
if (aVersion[i] !== bVersion[i]) {
return parseInt(aVersion[i]) > parseInt(bVersion[i]) ? -1 : 1;
}
}
return 0;
};
AbstractPluginLoader.prototype.versionToString = function(version) {
var versionString = '';
for (var i = 0; i < version.length; i++) {
versionString += (versionString ? '.' : '') + version[i];
}
return versionString;
};
AbstractPluginLoader.prototype.printUsage = function(plugins) {
for (var i = 0; i < plugins.length; i++) {
var plugin = plugins[i];
if (plugin.printUsage) {
plugin.printUsage();
}
}
};
module.exports = AbstractPluginLoader;
},{"../functions/function-registry":27,"../less-error":38}],20:[function(require,module,exports){
/**
* @todo Document why this abstraction exists, and the relationship between
* environment, file managers, and plugin manager
*/
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":39}],21:[function(require,module,exports){
var functionRegistry = require('./function-registry'),
Anonymous = require('../tree/anonymous'),
Keyword = require('../tree/keyword');
functionRegistry.addMultiple({
boolean: function(condition) {
return condition ? Keyword.True : Keyword.False;
},
'if': function(condition, trueValue, falseValue) {
return condition ? trueValue
: (falseValue || new Anonymous);
}
});
},{"../tree/anonymous":50,"../tree/keyword":70,"./function-registry":27}],22:[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":55,"./function-registry":27}],23:[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(origColor, hsl) {
var color = colorFunctions.hsla(hsl.h, hsl.s, hsl.l, hsl.a);
if (color) {
if (origColor.value &&
/^(rgb|hsl)/.test(origColor.value)) {
color.value = origColor.value;
} else {
color.value = 'rgb';
}
return color;
}
}
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) {
var color = colorFunctions.rgba(r, g, b, 1.0);
if (color) {
color.value = 'rgb';
return color;
}
},
rgba: function (r, g, b, a) {
try {
if (r instanceof Color) {
if (g) {
a = number(g);
} else {
a = r.alpha;
}
return new Color(r.rgb, a, 'rgba');
}
var rgb = [r, g, b].map(function (c) { return scaled(c, 255); });
a = number(a);
return new Color(rgb, a, 'rgba');
}
catch (e) {}
},
hsl: function (h, s, l) {
var color = colorFunctions.hsla(h, s, l, 1.0);
if (color) {
color.value = 'hsl';
return color;
}
},
hsla: function (h, s, l, a) {
try {
if (h instanceof Color) {
if (s) {
a = number(s);
} else {
a = h.alpha;
}
return new Color(h.rgb, a, 'hsla');
}
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;
var rgb = [
hue(h + 1 / 3) * 255,
hue(h) * 255,
hue(h - 1 / 3) * 255
];
a = number(a);
return new Color(rgb, a, 'hsla');
}
catch (e) {}
},
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(color, 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(color, 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(color, 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(color, 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(color, 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(color, hsl);
},
fade: function (color, amount) {
var hsl = color.toHSL();
hsl.a = amount.value / 100;
hsl.a = clamp(hsl.a);
return hsla(color, 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(color, 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;
}
},
// Changes made in 2.7.0 - Reverted in 3.0.0
// contrast: function (color, color1, color2, threshold) {
// // Return which of `color1` and `color2` has the greatest contrast with `color`
// // according to the standard WCAG contrast ratio calculation.
// // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
// // The threshold param is no longer used, in line with SASS.
// // filter: contrast(3.2);
// // should be kept as is, so check for color
// if (!color.rgb) {
// return null;
// }
// if (typeof color1 === 'undefined') {
// color1 = colorFunctions.rgba(0, 0, 0, 1.0);
// }
// if (typeof color2 === 'undefined') {
// color2 = colorFunctions.rgba(255, 255, 255, 1.0);
// }
// var contrast1, contrast2;
// var luma = color.luma();
// var luma1 = color1.luma();
// var luma2 = color2.luma();
// // Calculate contrast ratios for each color
// if (luma > luma1) {
// contrast1 = (luma + 0.05) / (luma1 + 0.05);
// } else {
// contrast1 = (luma1 + 0.05) / (luma + 0.05);
// }
// if (luma > luma2) {
// contrast2 = (luma + 0.05) / (luma2 + 0.05);
// } else {
// contrast2 = (luma2 + 0.05) / (luma + 0.05);
// }
// if (contrast1 > contrast2) {
// return color1;
// } else {
// return color2;
// }
// },
argb: function (color) {
return new Anonymous(color.toARGB());
},
color: function(c) {
if ((c instanceof Quoted) &&
(/^#([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3,4})$/i.test(c.value))) {
var val = c.value.slice(1);
return new Color(val, undefined, '#' + val);
}
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|4|6|8 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":50,"../tree/color":55,"../tree/dimension":62,"../tree/quoted":80,"./function-registry":27}],24:[function(require,module,exports){
module.exports = function(environment) {
var Quoted = require('../tree/quoted'),
URL = require('../tree/url'),
utils = require('../utils'),
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.rewriteUrls ?
currentFileInfo.currentDirectory : currentFileInfo.entryPath;
var fragmentStart = filePath.indexOf('#');
var fragment = '';
if (fragmentStart !== -1) {
fragment = filePath.slice(fragmentStart);
filePath = filePath.slice(0, fragmentStart);
}
var context = utils.clone(this.context);
context.rawBuffer = true;
var fileManager = environment.getFileManager(filePath, currentDirectory, 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, 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":39,"../tree/quoted":80,"../tree/url":85,"../utils":89,"./function-registry":27}],25:[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":70,"./function-registry":27}],26:[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":64}],27:[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 ));
},
getLocalFunctions: function() {
return this._data;
},
inherit: function() {
return makeRegistry( this );
},
create: function(base) {
return makeRegistry(base);
}
};
}
module.exports = makeRegistry( null );
},{}],28:[function(require,module,exports){
module.exports = function(environment) {
var functions = {
functionRegistry: require('./function-registry'),
functionCaller: require('./function-caller')
};
// register functions
require('./boolean');
require('./default');
require('./color');
require('./color-blending');
require('./data-uri')(environment);
require('./list');
require('./math');
require('./number');
require('./string');
require('./svg')(environment);
require('./types');
return functions;
};
},{"./boolean":21,"./color":23,"./color-blending":22,"./data-uri":24,"./default":25,"./function-caller":26,"./function-registry":27,"./list":29,"./math":31,"./number":32,"./string":33,"./svg":34,"./types":35}],29:[function(require,module,exports){
var Comment = require('../tree/comment'),
Dimension = require('../tree/dimension'),
Declaration = require('../tree/declaration'),
Expression = require('../tree/expression'),
Ruleset = require('../tree/ruleset'),
Selector = require('../tree/selector'),
Element = require('../tree/element'),
functionRegistry = require('./function-registry');
var 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({
_SELF: function(n) {
return n;
},
extract: function(values, index) {
index = index.value - 1; // (1-based index)
return getItemsFromNode(values)[index];
},
length: function(values) {
return new Dimension(getItemsFromNode(values).length);
},
/**
* Creates a Less list of incremental values.
* Modeled after Lodash's range function, also exists natively in PHP
*
* @param {Dimension} [start=1]
* @param {Dimension} end - e.g. 10 or 10px - unit is added to output
* @param {Dimension} [step=1]
*/
range: function(start, end, step) {
var from, to, stepValue = 1, list = [];
if (end) {
to = end;
from = start.value;
if (step) {
stepValue = step.value;
}
}
else {
from = 1;
to = start;
}
for (var i = from; i <= to.value; i += stepValue) {
list.push(new Dimension(i, to.unit));
}
return new Expression(list);
},
each: function(list, rs) {
var rules = [], newRules, iterator;
if (list.value) {
if (Array.isArray(list.value)) {
iterator = list.value;
} else {
iterator = [list.value];
}
} else if (list.ruleset) {
iterator = list.ruleset.rules;
} else if (list.rules) {
iterator = list.rules;
} else if (Array.isArray(list)) {
iterator = list;
} else {
iterator = [list];
}
var valueName = '@value',
keyName = '@key',
indexName = '@index';
if (rs.params) {
valueName = rs.params[0] && rs.params[0].name;
keyName = rs.params[1] && rs.params[1].name;
indexName = rs.params[2] && rs.params[2].name;
rs = rs.rules;
} else {
rs = rs.ruleset;
}
for (var i = 0; i < iterator.length; i++) {
var key, value, item = iterator[i];
if (item instanceof Declaration) {
key = typeof item.name === 'string' ? item.name : item.name[0].value;
value = item.value;
} else {
key = new Dimension(i + 1);
value = item;
}
if (item instanceof Comment) {
continue;
}
newRules = rs.rules.slice(0);
if (valueName) {
newRules.push(new Declaration(valueName,
value,
false, false, this.index, this.currentFileInfo));
}
if (indexName) {
newRules.push(new Declaration(indexName,
new Dimension(i + 1),
false, false, this.index, this.currentFileInfo));
}
if (keyName) {
newRules.push(new Declaration(keyName,
key,
false, false, this.index, this.currentFileInfo));
}
rules.push(new Ruleset([ new(Selector)([ new Element("", '&') ]) ],
newRules,
rs.strictImports,
rs.visibilityInfo()
));
}
return new Ruleset([ new(Selector)([ new Element("", '&') ]) ],
rules,
rs.strictImports,
rs.visibilityInfo()
).eval(this.context);
}
});
},{"../tree/comment":57,"../tree/declaration":60,"../tree/dimension":62,"../tree/element":63,"../tree/expression":64,"../tree/ruleset":81,"../tree/selector":82,"./function-registry":27}],30:[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":62}],31:[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":27,"./math-helper.js":30}],32:[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":50,"../tree/dimension":62,"./function-registry":27,"./math-helper.js":30}],33:[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":50,"../tree/javascript":68,"../tree/quoted":80,"./function-registry":27}],34:[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 = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1 1">' +
'<' + gradientType + 'Gradient id="g" ' + 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(#g)" /></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":55,"../tree/dimension":62,"../tree/expression":64,"../tree/quoted":80,"../tree/url":85,"./function-registry":27}],35:[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;
};
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);
}
});
},{"../tree/anonymous":50,"../tree/color":55,"../tree/detached-ruleset":61,"../tree/dimension":62,"../tree/keyword":70,"../tree/operation":77,"../tree/quoted":80,"../tree/url":85,"./function-registry":27}],36:[function(require,module,exports){
var contexts = require('./contexts'),
Parser = require('./parser/parser'),
LessError = require('./less-error'),
utils = require('./utils'),
PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise,
logger = require('./logger');
module.exports = function(environment) {
// FileInfo = {
// 'rewriteUrls' - 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(less, context, rootFileInfo) {
this.less = less;
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 tryAppendExtension - whether to try appending a file extension (.less or .js 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, tryAppendExtension, currentFileInfo, importOptions, callback) {
var importManager = this,
pluginLoader = this.context.pluginManager.Loader;
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);
logger.info('The file ' + fullPath + ' was skipped because it was not found and the import was marked optional.');
}
else {
// Inline imports aren't cached here.
// If we start to cache them, please make sure they won't conflict with non-inline imports of the
// same name as they used to do before this comment and the condition below have been added.
if (!importManager.files[fullPath] && !importOptions.inline) {
importManager.files[fullPath] = { root: root, options: importOptions };
}
if (e && !importManager.error) { importManager.error = e; }
callback(e, root, importedEqualsRoot, fullPath);
}
};
var newFileInfo = {
rewriteUrls: this.context.rewriteUrls,
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;
}
var loadFileCallback = function(loadedFile) {
var plugin,
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.rewriteUrls) {
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.isPlugin) {
plugin = pluginLoader.evalPlugin(contents, newEnv, importManager, importOptions.pluginArgs, newFileInfo);
if (plugin instanceof LessError) {
fileParsedFunc(plugin, null, resolvedFilename);
}
else {
fileParsedFunc(null, plugin, resolvedFilename);
}
} else if (importOptions.inline) {
fileParsedFunc(null, contents, resolvedFilename);
} else {
// import (multiple) parse trees apparently get altered and can't be cached.
// TODO: investigate why this is
if (importManager.files[resolvedFilename]
&& !importManager.files[resolvedFilename].options.multiple
&& !importOptions.multiple) {
fileParsedFunc(null, importManager.files[resolvedFilename].root, resolvedFilename);
}
else {
new Parser(newEnv, importManager, newFileInfo).parse(contents, function (e, root) {
fileParsedFunc(e, root, resolvedFilename);
});
}
}
};
var promise, context = utils.clone(this.context);
if (tryAppendExtension) {
context.ext = importOptions.isPlugin ? '.js' : '.less';
}
if (importOptions.isPlugin) {
promise = pluginLoader.loadPlugin(path, currentFileInfo.currentDirectory, context, environment, fileManager);
}
else {
promise = fileManager.loadFile(path, currentFileInfo.currentDirectory, context, environment,
function(err, loadedFile) {
if (err) {
fileParsedFunc(err);
} else {
loadFileCallback(loadedFile);
}
});
}
if (promise) {
promise.then(loadFileCallback, fileParsedFunc);
}
};
return ImportManager;
};
},{"./contexts":13,"./less-error":38,"./logger":39,"./parser/parser":44,"./utils":89,"promise":undefined}],37:[function(require,module,exports){
module.exports = function(environment, fileManagers) {
var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;
var initial = {
version: [3, 9, 0],
data: require('./data'),
tree: require('./tree'),
Environment: (Environment = require('./environment/environment')),
AbstractFileManager: require('./environment/abstract-file-manager'),
AbstractPluginLoader: require('./environment/abstract-plugin-loader'),
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')
};
// Create a public API
var ctor = function(t) {
return function() {
var obj = Object.create(t.prototype);
t.apply(obj, Array.prototype.slice.call(arguments, 0));
return obj;
};
};
var t, api = Object.create(initial);
for (var n in initial.tree) {
/* eslint guard-for-in: 0 */
t = initial.tree[n];
if (typeof t === 'function') {
api[n.toLowerCase()] = ctor(t);
}
else {
api[n] = Object.create(null);
for (var o in t) {
/* eslint guard-for-in: 0 */
api[n][o.toLowerCase()] = ctor(t[o]);
}
}
}
return api;
};
},{"./contexts":13,"./data":15,"./environment/abstract-file-manager":18,"./environment/abstract-plugin-loader":19,"./environment/environment":20,"./functions":28,"./import-manager":36,"./less-error":38,"./logger":39,"./parse":41,"./parse-tree":40,"./parser/parser":44,"./plugin-manager":45,"./render":46,"./source-map-builder":47,"./source-map-output":48,"./transform-tree":49,"./tree":67,"./utils":89,"./visitors":93}],38:[function(require,module,exports){
var utils = require('./utils');
/**
* This is a centralized class of any error that could be thrown internally (mostly by the parser).
* Besides standard .message it keeps some additional data like a path to the file where the error
* occurred along with line and column numbers.
*
* @class
* @extends Error
* @type {module.LessError}
*
* @prop {string} type
* @prop {string} filename
* @prop {number} index
* @prop {number} line
* @prop {number} column
* @prop {number} callLine
* @prop {number} callExtract
* @prop {string[]} extract
*
* @param {Object} e - An error object to wrap around or just a descriptive object
* @param {Object} fileContentMap - An object with file contents in 'contents' property (like importManager) @todo - move to fileManager?
* @param {string} [currentFilename]
*/
var LessError = module.exports = function LessError(e, fileContentMap, currentFilename) {
Error.call(this);
var filename = e.filename || currentFilename;
this.message = e.message;
this.stack = e.stack;
if (fileContentMap && filename) {
var input = fileContentMap.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 ? input.split('\n') : '';
this.type = e.type || 'Syntax';
this.filename = filename;
this.index = e.index;
this.line = typeof line === 'number' ? line + 1 : null;
this.column = col;
if (!this.line && this.stack) {
var found = this.stack.match(/(<anonymous>|Function):(\d+):(\d+)/);
if (found) {
if (found[2]) {
this.line = parseInt(found[2]) - 2;
}
if (found[3]) {
this.column = parseInt(found[3]);
}
}
}
this.callLine = callLine + 1;
this.callExtract = lines[callLine];
this.extract = [
lines[this.line - 2],
lines[this.line - 1],
lines[this.line]
];
}
};
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;
/**
* An overridden version of the default Object.prototype.toString
* which uses additional information to create a helpful message.
*
* @param {Object} options
* @returns {string}
*/
LessError.prototype.toString = function(options) {
options = options || {};
var message = '';
var extract = this.extract || [];
var error = [];
var stylize = function (str) { return str; };
if (options.stylize) {
var type = typeof options.stylize;
if (type !== 'function') {
throw Error('options.stylize should be a function, got a ' + type + '!');
}
stylize = options.stylize;
}
if (this.line !== null) {
if (typeof extract[0] === 'string') {
error.push(stylize((this.line - 1) + ' ' + extract[0], 'grey'));
}
if (typeof extract[1] === 'string') {
var errorTxt = this.line + ' ';
if (extract[1]) {
errorTxt += extract[1].slice(0, this.column) +
stylize(stylize(stylize(extract[1].substr(this.column, 1), 'bold') +
extract[1].slice(this.column + 1), 'red'), 'inverse');
}
error.push(errorTxt);
}
if (typeof extract[2] === 'string') {
error.push(stylize((this.line + 1) + ' ' + extract[2], 'grey'));
}
error = error.join('\n') + stylize('', 'reset') + '\n';
}
message += stylize(this.type + 'Error: ' + this.message, 'red');
if (this.filename) {
message += stylize(' in ', 'red') + this.filename;
}
if (this.line) {
message += stylize(' on line ' + this.line + ', column ' + (this.column + 1) + ':', 'grey');
}
message += '\n' + error;
if (this.callLine) {
message += stylize('from ', 'red') + (this.filename || '') + '/n';
message += stylize(this.callLine, 'grey') + ' ' + this.callExtract + '/n';
}
return message;
};
},{"./utils":89}],39:[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: []
};
},{}],40:[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":38,"./logger":39,"./transform-tree":49}],41:[function(require,module,exports){
var PromiseConstructor,
contexts = require('./contexts'),
Parser = require('./parser/parser'),
PluginManager = require('./plugin-manager'),
LessError = require('./less-error'),
utils = require('./utils');
module.exports = function(environment, ParseTree, ImportManager) {
var parse = function (input, options, callback) {
if (typeof options === 'function') {
callback = options;
options = utils.copyOptions(this.options, {});
}
else {
options = utils.copyOptions(this.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, !options.reUsePluginManager);
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,
rewriteUrls: context.rewriteUrls,
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(this, context, rootFileInfo);
this.importManager = imports;
// TODO: allow the plugins to be just a list of paths or names
// Do an async plugin queue like lessc
if (options.plugins) {
options.plugins.forEach(function(plugin) {
var evalResult, contents;
if (plugin.fileContent) {
contents = plugin.fileContent.replace(/^\uFEFF/, '');
evalResult = pluginManager.Loader.evalPlugin(contents, context, imports, plugin.options, plugin.filename);
if (evalResult instanceof LessError) {
return callback(evalResult);
}
}
else {
pluginManager.addPlugin(plugin);
}
});
}
new Parser(context, imports, rootFileInfo)
.parse(input, function (e, root) {
if (e) { return callback(e); }
callback(null, root, imports, options);
}, options);
}
};
return parse;
};
},{"./contexts":13,"./less-error":38,"./parser/parser":44,"./plugin-manager":45,"./utils":89,"promise":undefined}],42:[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;
};
},{}],43:[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.$quoted = function(loc) {
var pos = loc || parserInput.i,
startChar = input.charAt(pos);
if (startChar !== '\'' && startChar !== '"') {
return;
}
var length = input.length,
currentPosition = pos;
for (var i = 1; i + currentPosition < length; i++) {
var nextChar = input.charAt(i + currentPosition);
switch (nextChar) {
case '\\':
i++;
continue;
case '\r':
case '\n':
break;
case startChar:
var str = input.substr(currentPosition, i + 1);
if (!loc && loc !== 0) {
skipWhitespace(i + 1);
return str
}
return [startChar, str];
default:
}
}
return null;
};
/**
* Permissive parsing. Ignores everything except matching {} [] () and quotes
* until matching token (outside of blocks)
*/
parserInput.$parseUntil = function(tok) {
var quote = '',
returnVal = null,
inComment = false,
blockDepth = 0,
blockStack = [],
parseGroups = [],
length = input.length,
startPos = parserInput.i,
lastPos = parserInput.i,
i = parserInput.i,
loop = true,
testChar;
if (typeof tok === 'string') {
testChar = function(char) {
return char === tok;
}
} else {
testChar = function(char) {
return tok.test(char);
}
}
do {
var prevChar, nextChar = input.charAt(i);
if (blockDepth === 0 && testChar(nextChar)) {
returnVal = input.substr(lastPos, i - lastPos);
if (returnVal) {
parseGroups.push(returnVal);
}
else {
parseGroups.push(' ');
}
returnVal = parseGroups;
skipWhitespace(i - startPos);
loop = false
} else {
if (inComment) {
if (nextChar === '*' &&
input.charAt(i + 1) === '/') {
i++;
blockDepth--;
inComment = false;
}
i++;
continue;
}
switch (nextChar) {
case '\\':
i++;
nextChar = input.charAt(i);
parseGroups.push(input.substr(lastPos, i - lastPos + 1));
lastPos = i + 1;
break;
case '/':
if (input.charAt(i + 1) === '*') {
i++;
inComment = true;
blockDepth++;
}
break;
case '\'':
case '"':
quote = parserInput.$quoted(i);
if (quote) {
parseGroups.push(input.substr(lastPos, i - lastPos), quote);
i += quote[1].length - 1;
lastPos = i + 1;
}
else {
skipWhitespace(i - startPos);
returnVal = nextChar;
loop = false;
}
break;
case '{':
blockStack.push('}');
blockDepth++;
break;
case '(':
blockStack.push(')');
blockDepth++;
break;
case '[':
blockStack.push(']');
blockDepth++;
break;
case '}':
case ')':
case ']':
var expected = blockStack.pop();
if (nextChar === expected) {
blockDepth--;
} else {
// move the parser to the error and return expected
skipWhitespace(i - startPos);
returnVal = expected;
loop = false;
}
}
i++;
if (i > length) {
loop = false;
}
}
prevChar = nextChar;
} while (loop);
return returnVal ? returnVal : 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.prevChar = function() {
return input.charAt(parserInput.i - 1);
};
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":42}],44:[function(require,module,exports){
var LessError = require('../less-error'),
tree = require('../tree'),
visitors = require('../visitors'),
getParserInput = require('./parser-input'),
utils = require('../utils'),
functionRegistry = require('../functions/function-registry');
//
// 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) {
// 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
};
}
/**
* Used after initial parsing to create nodes on the fly
*
* @param {String} str - string to parse
* @param {Array} parseList - array of parsers to run input through e.g. ["value", "important"]
* @param {Number} currentIndex - start number to begin indexing
* @param {Object} fileInfo - fileInfo to attach to created nodes
*/
function parseNode(str, parseList, currentIndex, fileInfo, callback) {
var result, returnNodes = [];
var parser = parserInput;
try {
parser.start(str, false, function fail(msg, index) {
callback({
message: msg,
index: index + currentIndex
});
});
for (var x = 0, p, i; (p = parseList[x]); x++) {
i = parser.i;
result = parsers[p]();
if (result) {
result._index = i + currentIndex;
result._fileInfo = fileInfo;
returnNodes.push(result);
}
else {
returnNodes.push(null);
}
}
var endInfo = parser.end();
if (endInfo.isFinished) {
callback(null, returnNodes);
}
else {
callback(true, null);
}
} catch (e) {
throw new LessError({
index: e.index + currentIndex,
message: e.message
}, imports, fileInfo.filename);
}
}
//
// The Parser
//
return {
parserInput: parserInput,
imports: imports,
fileInfo: fileInfo,
parseNode: parseNode,
//
// 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);
});
tree.Node.prototype.parse = this;
root = new tree.Ruleset(null, this.parsers.primary());
tree.Node.prototype.rootNode = root;
root.root = true;
root.firstRoot = true;
root.functionRegistry = functionRegistry.inherit();
} 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 -> Declaration -> 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', [
// Declaration ("color", Value ([Expression [Color #fff]]))
// Declaration ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
// Declaration ("width", Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
// Ruleset (Selector [Element '>', '.child'], [...])
// ])
//
// In general, most rules will try to parse a token with the `$re()` function, and if the return
// value is truly, will return a new node, of the relevant type. Sometimes, we need to check
// first, before parsing, that's when we use `peek()`.
//
parsers: parsers = {
//
// The `primary` rule is the *entry* and *exit* point of the parser.
// The rules here can appear at any level of the parse tree.
//
// The recursive nature of the grammar is an interplay between the `block`
// rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
// as represented by this simplified grammar:
//
// primary → (ruleset | declaration)+
// ruleset → selector+ block
// block → '{' primary '}'
//
// Only at one point is the primary rule not called from the
// block rule: at the root level.
//
primary: function () {
var mixin = this.mixin, root = [], node;
while (true) {
while (true) {
node = this.comment();
if (!node) { break; }
root.push(node);
}
// always process comments before deciding if finished
if (parserInput.finished) {
break;
}
if (parserInput.peek('}')) {
break;
}
node = this.extendRule();
if (node) {
root = root.concat(node);
continue;
}
node = mixin.definition() || this.declaration() || this.ruleset() ||
mixin.call(false, false) || this.variableCall() || this.entities.call() || this.atrule();
if (node) {
root.push(node);
} else {
var foundSemiColon = false;
while (parserInput.$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: {
mixinLookup: function() {
return parsers.mixin.call(true, true);
},
//
// A string, which supports escaping " and '
//
// "milky way" 'he\'s the one!'
//
quoted: function (forceEscaped) {
var str, index = parserInput.i, isEscaped = false;
parserInput.save();
if (parserInput.$char('~')) {
isEscaped = true;
} else if (forceEscaped) {
parserInput.restore();
return;
}
str = parserInput.$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(/^\[?(?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+\]?/);
if (k) {
return tree.Color.fromKeyword(k) || new(tree.Keyword)(k);
}
},
//
// A function call
//
// rgb(255, 0, 255)
//
// The arguments are parsed with the `entities.arguments` parser.
//
call: function () {
var name, args, func, 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];
func = this.customFuncCall(name);
if (func) {
args = func.parse();
if (args && func.stop) {
parserInput.forget();
return args;
}
}
args = this.arguments(args);
if (!parserInput.$char(')')) {
parserInput.restore('Could not parse call arguments or missing \')\'');
return;
}
parserInput.forget();
return new(tree.Call)(name, args, index, fileInfo);
},
//
// Parsing rules for functions with non-standard args, e.g.:
//
// boolean(not(2 > 1))
//
// This is a quick prototype, to be modified/improved when
// more custom-parsed funcs come (e.g. `selector(...)`)
//
customFuncCall: function (name) {
/* Ideally the table is to be moved out of here for faster perf.,
but it's quite tricky since it relies on all these `parsers`
and `expect` available only here */
return {
alpha: f(parsers.ieAlpha, true),
boolean: f(condition),
'if': f(condition)
}[name.toLowerCase()];
function f(parse, stop) {
return {
parse: parse, // parsing function
stop: stop // when true - stop after parse() and return its result,
// otherwise continue for plain args
};
}
function condition() {
return [expect(parsers.condition, 'expected condition')];
}
},
arguments: function (prevArgs) {
var argsComma = prevArgs || [],
argsSemiColon = [],
isSemiColonSeparated, value;
parserInput.save();
while (true) {
if (prevArgs) {
prevArgs = false;
} else {
value = parsers.detachedRuleset() || this.assignment() || parsers.expression();
if (!value) {
break;
}
if (value.value && value.value.length == 1) {
value = value.value[0];
}
argsComma.push(value);
}
if (parserInput.$char(',')) {
continue;
}
if (parserInput.$char(';') || isSemiColonSeparated) {
isSemiColonSeparated = true;
value = (argsComma.length < 1) ? argsComma[0]
: new tree.Value(argsComma);
argsSemiColon.push(value);
argsComma = [];
}
}
parserInput.forget();
return isSemiColonSeparated ? argsSemiColon : argsComma;
},
literal: function () {
return this.dimension() ||
this.color() ||
this.quoted() ||
this.unicodeDescriptor();
},
// Assignments are argument entities for calls.
// They are present in ie filter properties as shown below.
//
// filter: progid:DXImageTransform.Microsoft.Alpha( *opacity=50* )
//
assignment: function () {
var key, value;
parserInput.save();
key = parserInput.$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() || this.property() ||
parserInput.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/) || '';
parserInput.autoCommentAbsorb = true;
expectChar(')');
return new(tree.URL)((value.value != null ||
value instanceof tree.Variable ||
value instanceof tree.Property) ?
value : new(tree.Anonymous)(value, index), 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 ch, name, index = parserInput.i;
parserInput.save();
if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^@@?[\w-]+/))) {
ch = parserInput.currentChar();
if (ch === '(' || ch === '[' && !parserInput.prevChar().match(/^\s/)) {
// this may be a VariableCall lookup
var result = parsers.variableCall(name);
if (result) {
parserInput.forget();
return result;
}
}
parserInput.forget();
return new(tree.Variable)(name, index, fileInfo);
}
parserInput.restore();
},
// A variable entity using the protective {} e.g. @{var}
variableCurly: function () {
var curly, index = parserInput.i;
if (parserInput.currentChar() === '@' && (curly = parserInput.$re(/^@\{([\w-]+)\}/))) {
return new(tree.Variable)('@' + curly[1], index, fileInfo);
}
},
//
// A Property accessor, such as `$color`, in
//
// background-color: $color
//
property: function () {
var name, index = parserInput.i;
if (parserInput.currentChar() === '$' && (name = parserInput.$re(/^\$[\w-]+/))) {
return new(tree.Property)(name, index, fileInfo);
}
},
// A property entity useing the protective {} e.g. ${prop}
propertyCurly: function () {
var curly, index = parserInput.i;
if (parserInput.currentChar() === '$' && (curly = parserInput.$re(/^\$\{([\w-]+)\}/))) {
return new(tree.Property)('$' + 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.$re(/^#([A-Fa-f0-9]{8}|[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3,4})/))) {
return new(tree.Color)(rgb[1], undefined, rgb[0]);
}
},
colorKeyword: function () {
parserInput.save();
var autoCommentAbsorb = parserInput.autoCommentAbsorb;
parserInput.autoCommentAbsorb = false;
var k = parserInput.$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.$re(/^(@[\w-]+)\s*:/))) { return name[1]; }
},
//
// Call a variable value to retrieve a detached ruleset
// or a value from a detached ruleset's rules.
//
// @fink();
// @fink;
// color: @fink[@color];
//
variableCall: function (parsedName) {
var lookups, important, i = parserInput.i,
inValue = !!parsedName, name = parsedName;
parserInput.save();
if (name || (parserInput.currentChar() === '@'
&& (name = parserInput.$re(/^(@[\w-]+)(\(\s*\))?/)))) {
lookups = this.mixin.ruleLookups();
if (!lookups && ((inValue && parserInput.$str('()') !== '()') || (name[2] !== '()'))) {
parserInput.restore('Missing \'[...]\' lookup in variable call');
return;
}
if (!inValue) {
name = name[1];
}
if (lookups && parsers.important()) {
important = true;
}
var call = new tree.VariableCall(name, i, fileInfo);
if (!inValue && parsers.end()) {
parserInput.forget();
return call;
}
else {
parserInput.forget();
return new tree.NamespaceValue(call, lookups, important, i, fileInfo);
}
}
parserInput.restore();
},
//
// extend syntax - used to extend selectors
//
extend: function(isRule) {
var elements, e, index = parserInput.i, option, extendList, extend;
if (!parserInput.$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);
// #mixins.square(#fff);
// .rounded(4px, black);
// .button;
//
// We can lookup / return a value using the lookup syntax:
//
// color: #mixin.square(#fff)[@color];
//
// The `while` loop is there because mixins can be
// namespaced, but we only support the child and descendant
// selector for now.
//
call: function (inValue, getLookup) {
var s = parserInput.currentChar(), important = false, lookups,
index = parserInput.i, elements, args, hasParens;
if (s !== '.' && s !== '#') { return; }
parserInput.save(); // stop us absorbing part of an invalid selector
elements = this.elements();
if (elements) {
if (parserInput.$char('(')) {
args = this.args(true).args;
expectChar(')');
hasParens = true;
}
if (getLookup !== false) {
lookups = this.ruleLookups();
}
if (getLookup === true && !lookups) {
parserInput.restore();
return;
}
if (inValue && !lookups && !hasParens) {
// This isn't a valid in-value mixin call
parserInput.restore();
return;
}
if (!inValue && parsers.important()) {
important = true;
}
if (inValue || parsers.end()) {
parserInput.forget();
var mixin = new(tree.mixin.Call)(elements, args, index, fileInfo, !lookups && important);
if (lookups) {
return new tree.NamespaceValue(mixin, lookups, important);
}
else {
return mixin;
}
}
}
parserInput.restore();
},
/**
* Matching elements for mixins
* (Start with . or # and can have > )
*/
elements: function() {
var elements, e, c, elem, elemIndex,
re = /^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/;
while (true) {
elemIndex = parserInput.i;
e = parserInput.$re(re);
if (!e) {
break;
}
elem = new(tree.Element)(c, e, false, elemIndex, fileInfo);
if (elements) {
elements.push(elem);
} else {
elements = [ elem ];
}
c = parserInput.$char('>');
}
return elements;
},
args: function (isCall) {
var entities = parsers.entities,
returner = { args:null, variadic: false },
expressions = [], argsSemiColon = [], argsComma = [],
isSemiColonSeparated, expressionContainsNamed, name, nameLoop,
value, arg, expand, hasSep = true;
parserInput.save();
while (true) {
if (isCall) {
arg = parsers.detachedRuleset() || parsers.expression();
} else {
parserInput.commentStore.length = 0;
if (parserInput.$str('...')) {
returner.variadic = true;
if (parserInput.$char(';') && !isSemiColonSeparated) {
isSemiColonSeparated = true;
}
(isSemiColonSeparated ? argsSemiColon : argsComma)
.push({ variadic: true });
break;
}
arg = entities.variable() || entities.property() || entities.literal() || entities.keyword() || this.call(true);
}
if (!arg || !hasSep) {
break;
}
nameLoop = null;
if (arg.throwAwayComments) {
arg.throwAwayComments();
}
value = arg;
var val = null;
if (isCall) {
// Variable
if (arg.value && arg.value.length == 1) {
val = arg.value[0];
}
} else {
val = arg;
}
if (val && (val instanceof tree.Variable || val instanceof tree.Property)) {
if (parserInput.$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.$char(',')) {
hasSep = true;
continue;
}
hasSep = parserInput.$char(';') === ';';
if (hasSep || 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();
}
},
ruleLookups: function() {
var rule, args, lookups = [];
if (parserInput.currentChar() !== '[') {
return;
}
while (true) {
parserInput.save();
args = null;
rule = this.lookupValue();
if (!rule && rule !== '') {
parserInput.restore();
break;
}
lookups.push(rule);
parserInput.forget();
}
if (lookups.length > 0) {
return lookups;
}
},
lookupValue: function() {
parserInput.save();
if (!parserInput.$char('[')) {
parserInput.restore();
return;
}
var name = parserInput.$re(/^(?:[@$]{0,2})[_a-zA-Z0-9-]*/);
if (!parserInput.$char(']')) {
parserInput.restore();
return;
}
if (name || name === '') {
parserInput.forget();
return name;
}
parserInput.restore();
}
},
//
// 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.property() || entities.call() || entities.keyword() || this.mixin.call(true) ||
entities.javascript();
},
//
// A Declaration 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.$char(';') || parserInput.peek('}');
},
//
// IE's alpha function
//
// alpha(opacity=88)
//
ieAlpha: function () {
var value;
// http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
if (!parserInput.$re(/^opacity=/i)) { return; }
value = parserInput.$re(/^\d+/);
if (!value) {
value = expect(parsers.entities.variable, 'Could not parse alpha');
value = '@{' + value.name.slice(1) + '}';
}
expectChar(')');
return new tree.Quoted('', 'alpha(opacity=' + value + ')');
},
//
// A Selector Element
//
// div
// + h1
// #socks
// input[type="text"]
//
// Elements are the building blocks for Selectors,
// they are made out of a `Combinator` (see combinator rule),
// and an element name, such as a tag a class, or `*`.
//
element: function () {
var e, c, v, index = parserInput.i;
c = this.combinator();
e = parserInput.$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(false)) && parserInput.$char(')')) {
e = new(tree.Paren)(v);
parserInput.forget();
} else {
parserInput.restore('Missing closing \')\'');
}
} else {
parserInput.forget();
}
}
if (e) { return new(tree.Element)(c, e, e instanceof tree.Variable, index, fileInfo); }
},
//
// Combinators combine elements together, in a Selector.
//
// Because our parser isn't white-space sensitive, special care
// has to be taken, when parsing the descendant combinator, ` `,
// as it's an empty space. We have to check the previous character
// in the input, to see if it's a ` ` character. More info on how
// we deal with this in *combinator.js*.
//
combinator: function () {
var c = parserInput.currentChar();
if (c === '/') {
parserInput.save();
var slashedCombinator = parserInput.$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
// with less extensions e.g. the ability to extend and guard
//
// .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;
isLess = isLess !== false;
while ((isLess && (extendList = this.extend())) || (isLess && (when = parserInput.$str('when'))) || (e = this.element())) {
if (when) {
condition = expect(this.conditions, 'expected condition');
} else if (condition) {
error('CSS guard can only be used at the end of selector');
} else if (extendList) {
if (allExtends) {
allExtends = allExtends.concat(extendList);
} else {
allExtends = extendList;
}
} else {
if (allExtends) { error('Extend can only be used at the end of selector'); }
c = parserInput.currentChar();
if (elements) {
elements.push(e);
} else {
elements = [ e ];
}
e = null;
}
if (c === '{' || c === '}' || c === ';' || c === ',' || c === ')') {
break;
}
}
if (elements) { return new(tree.Selector)(elements, allExtends, condition, index, fileInfo); }
if (allExtends) { error('Extend must be used to extend a selector, it cannot be used on its own'); }
},
selectors: function () {
var s, selectors;
while (true) {
s = this.selector();
if (!s) {
break;
}
if (selectors) {
selectors.push(s);
} else {
selectors = [ s ];
}
parserInput.commentStore.length = 0;
if (s.condition && selectors.length > 1) {
error("Guards are only currently allowed on a single selector.");
}
if (!parserInput.$char(',')) { break; }
if (s.condition) {
error("Guards are only currently allowed on a single selector.");
}
parserInput.commentStore.length = 0;
}
return selectors;
},
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.$char('}')) {
return content;
}
},
blockRuleset: function() {
var block = this.block();
if (block) {
block = new tree.Ruleset(null, block);
}
return block;
},
detachedRuleset: function() {
var argInfo, params, variadic;
parserInput.save();
if (parserInput.$re(/^[.#]\(/)) {
/**
* DR args currently only implemented for each() function, and not
* yet settable as `@dr: #(@arg) {}`
* This should be done when DRs are merged with mixins.
* See: https://github.com/less/less-meta/issues/16
*/
argInfo = this.mixin.args(false);
params = argInfo.args;
variadic = argInfo.variadic;
if (!parserInput.$char(')')) {
parserInput.restore();
return;
}
}
var blockRuleset = this.blockRuleset();
if (blockRuleset) {
parserInput.forget();
if (params) {
return new tree.mixin.Definition(null, params, blockRuleset, null, variadic);
}
return new tree.DetachedRuleset(blockRuleset);
}
parserInput.restore();
},
//
// div, .class, body > p {...}
//
ruleset: function () {
var selectors, rules, debugInfo;
parserInput.save();
if (context.dumpLineNumbers) {
debugInfo = getDebugInfo(parserInput.i);
}
selectors = this.selectors();
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();
}
},
declaration: function () {
var name, value, index = parserInput.i, hasDR,
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();
if (value) {
hasDR = true;
}
}
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;
// Custom property values get permissive parsing
if (name[0].value && name[0].value.slice(0, 2) === '--') {
value = this.permissiveValue();
}
// Try to store values as anonymous
// If we need the value later we'll re-parse it in ruleset.parseValue
else {
value = this.anonymousValue();
}
if (value) {
parserInput.forget();
// anonymous values absorb the end ';' which is required for them to work
return new (tree.Declaration)(name, value, false, merge, index, fileInfo);
}
if (!value) {
value = this.value();
}
if (value) {
important = this.important();
} else if (isVariable) {
// As a last resort, try permissiveValue
value = this.permissiveValue();
}
}
if (value && (this.end() || hasDR)) {
parserInput.forget();
return new (tree.Declaration)(name, value, important, merge, index, fileInfo);
}
else {
parserInput.restore();
}
} else {
parserInput.restore();
}
},
anonymousValue: function () {
var index = parserInput.i;
var match = parserInput.$re(/^([^.#@\$+\/'"*`(;{}-]*);/);
if (match) {
return new(tree.Anonymous)(match[1], index);
}
},
/**
* Used for custom properties, at-rules, and variables (as fallback)
* Parses almost anything inside of {} [] () "" blocks
* until it reaches outer-most tokens.
*
* First, it will try to parse comments and entities to reach
* the end. This is mostly like the Expression parser except no
* math is allowed.
*/
permissiveValue: function (untilTokens) {
var i, e, done, value,
tok = untilTokens || ';',
index = parserInput.i, result = [];
function testCurrentChar() {
var char = parserInput.currentChar();
if (typeof tok === 'string') {
return char === tok;
} else {
return tok.test(char);
}
}
if (testCurrentChar()) {
return;
}
value = [];
do {
e = this.comment();
if (e) {
value.push(e);
continue;
}
e = this.entity();
if (e) {
value.push(e);
}
} while (e);
done = testCurrentChar();
if (value.length > 0) {
value = new(tree.Expression)(value);
if (done) {
return value;
}
else {
result.push(value);
}
// Preserve space before $parseUntil as it will not
if (parserInput.prevChar() === ' ') {
result.push(new tree.Anonymous(' ', index));
}
}
parserInput.save();
value = parserInput.$parseUntil(tok);
if (value) {
if (typeof value === 'string') {
error('Expected \'' + value + '\'', 'Parse');
}
if (value.length === 1 && value[0] === ' ') {
parserInput.forget();
return new tree.Anonymous('', index);
}
var item;
for (i = 0; i < value.length; i++) {
item = value[i];
if (Array.isArray(item)) {
// Treat actual quotes as normal quoted values
result.push(new tree.Quoted(item[0], item[1], true, index, fileInfo));
}
else {
if (i === value.length - 1) {
item = item.trim();
}
// Treat like quoted values, but replace vars like unquoted expressions
var quote = new tree.Quoted('\'', item, true, index, fileInfo);
quote.variableRegex = /@([\w-]+)/g;
quote.propRegex = /\$([\w-]+)/g;
result.push(quote);
}
}
parserInput.forget();
return new tree.Expression(result, true);
}
parserInput.restore();
},
//
// An @import atrule
//
// @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() || entities.mixinLookup();
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.Declaration)(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() || entities.mixinLookup();
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 plugins dynamically.
//
// @plugin (args) "lib";
//
plugin: function () {
var path, args, options,
index = parserInput.i,
dir = parserInput.$re(/^@plugin?\s+/);
if (dir) {
args = this.pluginArgs();
if (args) {
options = {
pluginArgs: args,
isPlugin: true
};
}
else {
options = { isPlugin: 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');
}
}
},
pluginArgs: function() {
// list of options, surrounded by parens
parserInput.save();
if (!parserInput.$char('(')) {
parserInput.restore();
return null;
}
var args = parserInput.$re(/^\s*([^\);]+)\)\s*/);
if (args[1]) {
parserInput.forget();
return args[1].trim();
}
else {
parserInput.restore();
return null;
}
},
//
// A CSS AtRule
//
// @charset "utf-8";
//
atrule: 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.$re(/^@[a-z-]+/);
if (!name) { return; }
nonVendorSpecificName = name;
if (name.charAt(1) == '-' && name.indexOf('-', 2) > 0) {
nonVendorSpecificName = '@' + name.slice(name.indexOf('-', 2) + 1);
}
switch (nonVendorSpecificName) {
case '@charset':
hasIdentifier = true;
hasBlock = false;
break;
case '@namespace':
hasExpression = true;
hasBlock = false;
break;
case '@keyframes':
case '@counter-style':
hasIdentifier = true;
break;
case '@document':
case '@supports':
hasUnknown = true;
isRooted = false;
break;
default:
hasUnknown = true;
break;
}
parserInput.commentStore.length = 0;
if (hasIdentifier) {
value = this.entity();
if (!value) {
error('expected ' + name + ' identifier');
}
} else if (hasExpression) {
value = this.expression();
if (!value) {
error('expected ' + name + ' expression');
}
} else if (hasUnknown) {
value = this.permissiveValue(/^[{;]/);
hasBlock = (parserInput.currentChar() === '{');
if (!value) {
if (!hasBlock && parserInput.currentChar() !== ';') {
error(name + ' rule is missing block or ending semi-colon');
}
}
else if (!value.value) {
value = null;
}
}
if (hasBlock) {
rules = this.blockRuleset();
}
if (rules || (!hasBlock && value && parserInput.$char(';'))) {
parserInput.forget();
return new (tree.AtRule)(name, value, rules, index, fileInfo,
context.dumpLineNumbers ? getDebugInfo(index) : null,
isRooted
);
}
parserInput.restore('at-rule 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 = [], index = parserInput.i;
do {
e = this.expression();
if (e) {
expressions.push(e);
if (!parserInput.$char(',')) { break; }
}
} while (e);
if (expressions.length > 0) {
return new(tree.Value)(expressions, index);
}
},
important: function () {
if (parserInput.currentChar() === '!') {
return parserInput.$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('*') || parserInput.$str('./');
if (!op) { parserInput.forget(); break; }
a = this.operand();
if (!a) { parserInput.restore(); break; }
parserInput.forget();
m.parensInOp = true;
a.parensInOp = true;
operation = new(tree.Operation)(op, [operation || m, a], isSpaced);
isSpaced = parserInput.isWhitespace(-1);
}
return operation || m;
}
},
addition: function () {
var m, a, op, operation, isSpaced;
m = this.multiplication();
if (m) {
isSpaced = parserInput.isWhitespace(-1);
while (true) {
op = parserInput.$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(true);
if (a) {
while (true) {
if (!parserInput.peek(/^,\s*(not\s*)?\(/) || !parserInput.$char(',')) {
break;
}
b = this.condition(true);
if (!b) {
break;
}
condition = new(tree.Condition)('or', condition || a, b, index);
}
return condition || a;
}
},
condition: function (needsParens) {
var result, logical, next;
function or() {
return parserInput.$str('or');
}
result = this.conditionAnd(needsParens);
if (!result) {
return ;
}
logical = or();
if (logical) {
next = this.condition(needsParens);
if (next) {
result = new(tree.Condition)(logical, result, next);
} else {
return ;
}
}
return result;
},
conditionAnd: function (needsParens) {
var result, logical, next, self = this;
function insideCondition() {
var cond = self.negatedCondition(needsParens) || self.parenthesisCondition(needsParens);
if (!cond && !needsParens) {
return self.atomicCondition(needsParens);
}
return cond;
}
function and() {
return parserInput.$str('and');
}
result = insideCondition();
if (!result) {
return ;
}
logical = and();
if (logical) {
next = this.conditionAnd(needsParens);
if (next) {
result = new(tree.Condition)(logical, result, next);
} else {
return ;
}
}
return result;
},
negatedCondition: function (needsParens) {
if (parserInput.$str('not')) {
var result = this.parenthesisCondition(needsParens);
if (result) {
result.negate = !result.negate;
}
return result;
}
},
parenthesisCondition: function (needsParens) {
function tryConditionFollowedByParenthesis(me) {
var body;
parserInput.save();
body = me.condition(needsParens);
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(needsParens);
if (!body) {
parserInput.restore();
return ;
}
if (!parserInput.$char(')')) {
parserInput.restore('expected \')\' got \'' + parserInput.currentChar() + '\'');
return ;
}
parserInput.forget();
return body;
},
atomicCondition: function (needsParens) {
var entities = this.entities, index = parserInput.i, a, b, c, op;
function cond() {
return this.addition() || entities.keyword() || entities.quoted() || entities.mixinLookup();
}
cond = cond.bind(this);
a = cond();
if (a) {
if (parserInput.$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 = cond();
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.$char('-');
}
var o = this.sub() || entities.dimension() ||
entities.color() || entities.variable() ||
entities.property() || entities.call() ||
entities.quoted(true) || entities.colorKeyword() ||
entities.mixinLookup();
if (negate) {
o.parensInOp = true;
o = new(tree.Negative)(o);
}
return o;
},
//
// Expressions either represent mathematical operations,
// or white-space delimited Entities.
//
// 1px solid black
// @var * 2
//
expression: function () {
var entities = [], e, delim, index = parserInput.i;
do {
e = this.comment();
if (e) {
entities.push(e);
continue;
}
e = this.addition() || this.entity();
if (e) {
entities.push(e);
// operations do not allow keyword "/" dimension (e.g. small/20px) so we support that here
if (!parserInput.peek(/^\/[\/*]/)) {
delim = parserInput.$char('/');
if (delim) {
entities.push(new(tree.Anonymous)(delim, index));
}
}
}
} 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.$re(re);
if (chunk) {
index.push(i);
return name.push(chunk[1]);
}
}
match(/^(\*?)/);
while (true) {
if (!match(/^((?:[\w-]+)|(?:[@\$]\{[\w-]+\}))/)) {
break;
}
}
if ((name.length > 1) && match(/^((?:\+_|\+)?)\s*:/)) {
parserInput.forget();
// at last, we have the complete match now. move forward,
// convert name particles to tree objects and return:
if (name[0] === '') {
name.shift();
index.shift();
}
for (k = 0; k < name.length; k++) {
s = name[k];
name[k] = (s.charAt(0) !== '@' && s.charAt(0) !== '$') ?
new(tree.Keyword)(s) :
(s.charAt(0) === '@' ?
new(tree.Variable)('@' + s.slice(2, -1), index[k], fileInfo) :
new(tree.Property)('$' + 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;
},{"../functions/function-registry":27,"../less-error":38,"../tree":67,"../utils":89,"../visitors":93,"./parser-input":43}],45:[function(require,module,exports){
/**
* Plugin Manager
*/
var PluginManager = function(less) {
this.less = less;
this.visitors = [];
this.preProcessors = [];
this.postProcessors = [];
this.installedPlugins = [];
this.fileManagers = [];
this.iterator = -1;
this.pluginCache = {};
this.Loader = new less.PluginLoader(less);
};
var pm, PluginManagerFactory = function(less, newFactory) {
if (newFactory || !pm) {
pm = new PluginManager(less);
}
return pm;
};
/**
* 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
* @param {String} filename
*/
PluginManager.prototype.addPlugin = function(plugin, filename, functionRegistry) {
this.installedPlugins.push(plugin);
if (filename) {
this.pluginCache[filename] = plugin;
}
if (plugin.install) {
plugin.install(this.less, this, functionRegistry || this.less.functions.functionRegistry);
}
};
/**
*
* @param filename
*/
PluginManager.prototype.get = function(filename) {
return this.pluginCache[filename];
};
/**
* 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;
};
PluginManager.prototype.visitor = function() {
var self = this;
return {
first: function() {
self.iterator = -1;
return self.visitors[self.iterator];
},
get: function() {
self.iterator += 1;
return self.visitors[self.iterator];
}
};
};
/**
*
* @returns {Array}
* @private
*/
PluginManager.prototype.getFileManagers = function() {
return this.fileManagers;
};
//
module.exports = PluginManagerFactory;
},{}],46:[function(require,module,exports){
var PromiseConstructor,
utils = require('./utils');
module.exports = function(environment, ParseTree, ImportManager) {
var render = function (input, options, callback) {
if (typeof options === 'function') {
callback = options;
options = utils.copyOptions(this.options, {});
}
else {
options = utils.copyOptions(this.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;
};
},{"./utils":89,"promise":undefined}],47:[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);
}
if (this.options.sourceMapBasepath !== undefined && this.sourceMapURL !== undefined) {
this.sourceMapURL = sourceMapOutput.removeBasepath(this.sourceMapURL);
}
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;
};
},{}],48:[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.removeBasepath = function(path) {
if (this._sourceMapBasepath && path.indexOf(this._sourceMapBasepath) === 0) {
path = path.substring(this._sourceMapBasepath.length);
if (path.charAt(0) === '\\' || path.charAt(0) === '/') {
path = path.substring(1);
}
}
return path;
};
SourceMapOutput.prototype.normalizeFilename = function(filename) {
filename = filename.replace(/\\/g, '/');
filename = this.removeBasepath(filename);
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 && fileInfo.filename) {
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 && fileInfo.filename) {
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;
};
},{}],49:[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.Declaration('@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.Declaration('@' + k, value, false, null, 0);
});
evalEnv.frames = [new tree.Ruleset(null, variables)];
}
var visitors = [
new visitor.JoinSelectorVisitor(),
new visitor.MarkVisibleSelectorsVisitor(true),
new visitor.ExtendVisitor(),
new visitor.ToCSSVisitor({compress: Boolean(options.compress)})
], preEvalVisitors = [], v, visitorIterator;
/**
* first() / get() allows visitors to be added while visiting
*
* @todo Add scoping for visitors just like functions for @plugin; right now they're global
*/
if (options.pluginManager) {
visitorIterator = options.pluginManager.visitor();
for (var i = 0; i < 2; i++) {
visitorIterator.first();
while ((v = visitorIterator.get())) {
if (v.isPreEvalVisitor) {
if (i === 0 || preEvalVisitors.indexOf(v) === -1) {
preEvalVisitors.push(v);
v.run(root);
}
}
else {
if (i === 0 || visitors.indexOf(v) === -1) {
if (v.isPreVisitor) {
visitors.unshift(v);
}
else {
visitors.push(v);
}
}
}
}
}
}
evaldRoot = root.eval(evalEnv);
for (var i = 0; i < visitors.length; i++) {
visitors[i].run(evaldRoot);
}
// Run any remaining visitors added after eval pass
if (options.pluginManager) {
visitorIterator.first();
while ((v = visitorIterator.get())) {
if (visitors.indexOf(v) === -1 && preEvalVisitors.indexOf(v) === -1) {
v.run(evaldRoot);
}
}
}
return evaldRoot;
};
},{"./contexts":13,"./tree":67,"./visitors":93}],50:[function(require,module,exports){
var Node = require('./node');
var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike, visibilityInfo) {
this.value = value;
this._index = index;
this._fileInfo = currentFileInfo;
this.mapLines = mapLines;
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._fileInfo, 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) {
this.nodeVisible = Boolean(this.value);
if (this.nodeVisible) {
output.add(this.value, this._fileInfo, this._index, this.mapLines);
}
};
module.exports = Anonymous;
},{"./node":76}],51:[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":76}],52:[function(require,module,exports){
var Node = require('./node'),
Selector = require('./selector'),
Ruleset = require('./ruleset'),
Anonymous = require('./anonymous');
var AtRule = function (name, value, rules, index, currentFileInfo, debugInfo, isRooted, visibilityInfo) {
var i;
this.name = name;
this.value = (value instanceof Node) ? value : (value ? new Anonymous(value) : value);
if (rules) {
if (Array.isArray(rules)) {
this.rules = rules;
} else {
this.rules = [rules];
this.rules[0].selectors = (new Selector([], null, null, index, currentFileInfo)).createEmptySelectors();
}
for (i = 0; i < this.rules.length; i++) {
this.rules[i].allowImports = true;
}
this.setParent(this.rules, this);
}
this._index = index;
this._fileInfo = currentFileInfo;
this.debugInfo = debugInfo;
this.isRooted = isRooted || false;
this.copyVisibilityInfo(visibilityInfo);
this.allowRoot = true;
};
AtRule.prototype = new Node();
AtRule.prototype.type = 'AtRule';
AtRule.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);
}
};
AtRule.prototype.isRulesetLike = function() {
return this.rules || !this.isCharset();
};
AtRule.prototype.isCharset = function() {
return '@charset' === this.name;
};
AtRule.prototype.genCSS = function (context, output) {
var value = this.value, rules = this.rules;
output.add(this.name, this.fileInfo(), this.getIndex());
if (value) {
output.add(' ');
value.genCSS(context, output);
}
if (rules) {
this.outputRuleset(context, output, rules);
} else {
output.add(';');
}
};
AtRule.prototype.eval = function (context) {
var mediaPathBackup, mediaBlocksBackup, value = this.value, rules = this.rules;
// media stored inside other atrule 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 AtRule(this.name, value, rules,
this.getIndex(), this.fileInfo(), this.debugInfo, this.isRooted, this.visibilityInfo());
};
AtRule.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);
}
};
AtRule.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);
}
};
AtRule.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]);
}
};
AtRule.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 = AtRule;
},{"./anonymous":50,"./node":76,"./ruleset":81,"./selector":82}],53:[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":76}],54:[function(require,module,exports){
var Node = require('./node'),
Anonymous = require('./anonymous'),
FunctionCaller = require('../functions/function-caller');
//
// A function call node.
//
var Call = function (name, args, index, currentFileInfo) {
this.name = name;
this.args = args;
this.calc = name === 'calc';
this._index = index;
this._fileInfo = 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) {
/**
* Turn off math for calc(), and switch back on for evaluating nested functions
*/
var currentMathContext = context.mathOn;
context.mathOn = !this.calc;
if (this.calc || context.inCalc) {
context.enterCalc();
}
var args = this.args.map(function (a) { return a.eval(context); });
if (this.calc || context.inCalc) {
context.exitCalc();
}
context.mathOn = currentMathContext;
var result, funcCaller = new FunctionCaller(this.name, context, this.getIndex(), this.fileInfo());
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.getIndex(),
filename: this.fileInfo().filename,
line: e.lineNumber,
column: e.columnNumber
};
}
if (result !== null && result !== undefined) {
// Results that that are not nodes are cast as Anonymous nodes
// Falsy values or booleans are returned as empty nodes
if (!(result instanceof Node)) {
if (!result || result === true) {
result = new Anonymous(null);
}
else {
result = new Anonymous(result.toString());
}
}
result._index = this._index;
result._fileInfo = this._fileInfo;
return result;
}
}
return new Call(this.name, args, this.getIndex(), this.fileInfo());
};
Call.prototype.genCSS = function (context, output) {
output.add(this.name + '(', this.fileInfo(), this.getIndex());
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":26,"./anonymous":50,"./node":76}],55:[function(require,module,exports){
var Node = require('./node'),
colors = require('../data/colors');
//
// RGB Colors - #ff0014, #eee
//
var Color = function (rgb, a, originalForm) {
var self = this;
//
// 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, i) {
if (i < 3) {
self.rgb.push(parseInt(c, 16));
} else {
self.alpha = (parseInt(c, 16)) / 255;
}
});
} else {
this.rgb = [];
rgb.split('').map(function (c, i) {
if (i < 3) {
self.rgb.push(parseInt(c + c, 16));
} else {
self.alpha = (parseInt(c + c, 16)) / 255;
}
});
}
this.alpha = 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,
colorFunction, args = [];
// `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.
alpha = this.fround(context, this.alpha);
if (this.value) {
if (this.value.indexOf('rgb') === 0) {
if (alpha < 1) {
colorFunction = 'rgba';
}
} else if (this.value.indexOf('hsl') === 0) {
if (alpha < 1) {
colorFunction = 'hsla';
} else {
colorFunction = 'hsl';
}
} else {
return this.value;
}
} else {
if (alpha < 1) {
colorFunction = 'rgba';
}
}
switch (colorFunction) {
case 'rgba':
args = this.rgb.map(function (c) {
return clamp(Math.round(c), 255);
}).concat(clamp(alpha, 1));
break;
case 'hsla':
args.push(clamp(alpha, 1));
case 'hsl':
color = this.toHSL();
args = [
this.fround(context, color.h),
this.fround(context, color.s * 100) + '%',
this.fround(context, color.l * 100) + '%'
].concat(args);
}
if (colorFunction) {
// Values are capped between `0` and `255`, rounded and zero-padded.
return colorFunction + '(' + args.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 = new Array(3);
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":14,"./node":76}],56:[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":76}],57:[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._fileInfo = 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.fileInfo(), this.getIndex());
}
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":59,"./node":76}],58:[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":76}],59:[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;
},{}],60:[function(require,module,exports){
var Node = require('./node'),
Value = require('./value'),
Keyword = require('./keyword'),
Anonymous = require('./anonymous'),
MATH = require('../constants').Math;
var Declaration = function (name, value, important, merge, index, currentFileInfo, inline, variable) {
this.name = name;
this.value = (value instanceof Node) ? value : new Value([value ? new Anonymous(value) : null]);
this.important = important ? ' ' + important.trim() : '';
this.merge = merge;
this._index = index;
this._fileInfo = currentFileInfo;
this.inline = inline || false;
this.variable = (variable !== undefined) ? variable
: (name.charAt && (name.charAt(0) === '@'));
this.allowRoot = true;
this.setParent(this.value, this);
};
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;
}
Declaration.prototype = new Node();
Declaration.prototype.type = 'Declaration';
Declaration.prototype.genCSS = function (context, output) {
output.add(this.name + (context.compress ? ':' : ': '), this.fileInfo(), this.getIndex());
try {
this.value.genCSS(context, output);
}
catch (e) {
e.index = this._index;
e.filename = this._fileInfo.filename;
throw e;
}
output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? '' : ';'), this._fileInfo, this._index);
};
Declaration.prototype.eval = function (context) {
var mathBypass = false, prevMath, 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
}
// @todo remove when parens-division is default
if (name === 'font' && context.math === MATH.ALWAYS) {
mathBypass = true;
prevMath = context.math;
context.math = MATH.PARENS_DIVISION;
}
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.getIndex(), filename: this.fileInfo().filename };
}
var important = this.important,
importantResult = context.importantScope.pop();
if (!important && importantResult.important) {
important = importantResult.important;
}
return new Declaration(name,
evaldValue,
important,
this.merge,
this.getIndex(), this.fileInfo(), this.inline,
variable);
}
catch (e) {
if (typeof e.index !== 'number') {
e.index = this.getIndex();
e.filename = this.fileInfo().filename;
}
throw e;
}
finally {
if (mathBypass) {
context.math = prevMath;
}
}
};
Declaration.prototype.makeImportant = function () {
return new Declaration(this.name,
this.value,
'!important',
this.merge,
this.getIndex(), this.fileInfo(), this.inline);
};
module.exports = Declaration;
},{"../constants":12,"./anonymous":50,"./keyword":70,"./node":76,"./value":86}],61:[function(require,module,exports){
var Node = require('./node'),
contexts = require('../contexts'),
utils = require('../utils');
var DetachedRuleset = function (ruleset, frames) {
this.ruleset = ruleset;
this.frames = frames;
this.setParent(this.ruleset, this);
};
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 || utils.copyArray(context.frames);
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":13,"../utils":89,"./node":76}],62:[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);
if (isNaN(this.value)) {
throw new Error('Dimension is not a number.');
}
this.unit = (unit && unit instanceof Unit) ? unit :
new Unit(unit ? [unit] : undefined);
this.setParent(this.unit, this);
};
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":16,"./color":55,"./node":76,"./unit":84}],63:[function(require,module,exports){
var Node = require('./node'),
Paren = require('./paren'),
Combinator = require('./combinator');
var Element = function (combinator, value, isVariable, index, currentFileInfo, visibilityInfo) {
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.isVariable = isVariable;
this._index = index;
this._fileInfo = currentFileInfo;
this.copyVisibilityInfo(visibilityInfo);
this.setParent(this.combinator, this);
};
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.isVariable,
this.getIndex(),
this.fileInfo(), this.visibilityInfo());
};
Element.prototype.clone = function () {
return new Element(this.combinator,
this.value,
this.isVariable,
this.getIndex(),
this.fileInfo(), this.visibilityInfo());
};
Element.prototype.genCSS = function (context, output) {
output.add(this.toCSS(context), this.fileInfo(), this.getIndex());
};
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":56,"./node":76,"./paren":78}],64:[function(require,module,exports){
var Node = require('./node'),
Paren = require('./paren'),
Comment = require('./comment'),
Dimension = require('./dimension'),
MATH = require('../constants').Math;
var Expression = function (value, noSpacing) {
this.value = value;
this.noSpacing = noSpacing;
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,
mathOn = context.isMathOn(),
inParenthesis = this.parens &&
(context.math !== MATH.STRICT_LEGACY || !this.parensInOp),
doubleParen = false;
if (inParenthesis) {
context.inParenthesis();
}
if (this.value.length > 1) {
returnValue = new Expression(this.value.map(function (e) {
if (!e.eval) {
return e;
}
return e.eval(context);
}), this.noSpacing);
} else if (this.value.length === 1) {
if (this.value[0].parens && !this.value[0].parensInOp && !context.inCalc) {
doubleParen = true;
}
returnValue = this.value[0].eval(context);
} else {
returnValue = this;
}
if (inParenthesis) {
context.outOfParenthesis();
}
if (this.parens && this.parensInOp && !mathOn && !doubleParen
&& (!(returnValue instanceof Dimension))) {
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 (!this.noSpacing && 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;
},{"../constants":12,"./comment":57,"./dimension":62,"./node":76,"./paren":78}],65:[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.object_id = Extend.next_id++;
this.parent_ids = [this.object_id];
this._index = index;
this._fileInfo = 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;
}
this.setParent(this.selector, this);
};
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.getIndex(), this.fileInfo(), this.visibilityInfo());
};
Extend.prototype.clone = function (context) {
return new Extend(this.selector, this.option, this.getIndex(), this.fileInfo(), 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":76,"./selector":82}],66:[function(require,module,exports){
var Node = require('./node'),
Media = require('./media'),
URL = require('./url'),
Quoted = require('./quoted'),
Ruleset = require('./ruleset'),
Anonymous = require('./anonymous'),
utils = require('../utils'),
LessError = require('../less-error');
//
// 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._fileInfo = currentFileInfo;
this.path = path;
this.features = features;
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);
this.setParent(this.features, this);
this.setParent(this.path, this);
};
//
// 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.isPlugin && !this.options.inline && this.root) {
this.root = visitor.visit(this.root);
}
};
Import.prototype.genCSS = function (context, output) {
if (this.css && this.path._fileInfo.reference === undefined) {
output.add('@import ', this._fileInfo, 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._fileInfo, this.visibilityInfo());
};
Import.prototype.evalPath = function (context) {
var path = this.path.eval(context);
var fileInfo = this._fileInfo;
if (!(path instanceof URL)) {
// Add the rootpath if the URL requires a rewrite
var pathValue = path.value;
if (fileInfo &&
pathValue &&
context.pathRequiresRewrite(pathValue)) {
path.value = context.rewritePath(pathValue, fileInfo.rootpath);
} else {
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.isPlugin) {
if (this.root && this.root.eval) {
try {
this.root.eval(context);
}
catch (e) {
e.message = 'Plugin error during evaluation';
throw new LessError(e, this.root.imports, this.root.filename);
}
}
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._fileInfo && this.path._fileInfo.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, utils.copyArray(this.root.rules));
ruleset.evalImports(context);
return this.features ? new Media(ruleset.rules, this.features.value) : ruleset.rules;
}
};
module.exports = Import;
},{"../less-error":38,"../utils":89,"./anonymous":50,"./media":71,"./node":76,"./quoted":80,"./ruleset":81,"./url":85}],67:[function(require,module,exports){
var tree = Object.create(null);
tree.Node = require('./node');
tree.Color = require('./color');
tree.AtRule = require('./atrule');
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.Property = require('./property');
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.Declaration = require('./declaration');
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.VariableCall = require('./variable-call');
tree.NamespaceValue = require('./namespace-value');
module.exports = tree;
},{"./anonymous":50,"./assignment":51,"./atrule":52,"./attribute":53,"./call":54,"./color":55,"./combinator":56,"./comment":57,"./condition":58,"./declaration":60,"./detached-ruleset":61,"./dimension":62,"./element":63,"./expression":64,"./extend":65,"./import":66,"./javascript":68,"./keyword":70,"./media":71,"./mixin-call":72,"./mixin-definition":73,"./namespace-value":74,"./negative":75,"./node":76,"./operation":77,"./paren":78,"./property":79,"./quoted":80,"./ruleset":81,"./selector":82,"./unicode-descriptor":83,"./unit":84,"./url":85,"./value":86,"./variable":88,"./variable-call":87}],68:[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._fileInfo = currentFileInfo;
};
JavaScript.prototype = new JsEvalNode();
JavaScript.prototype.type = 'JavaScript';
JavaScript.prototype.eval = function(context) {
var result = this.evaluateJavaScript(this.expression, context);
var type = typeof result;
if (type === 'number' && !isNaN(result)) {
return new Dimension(result);
} else if (type === '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":50,"./dimension":62,"./js-eval-node":69,"./quoted":80}],69:[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) {
throw { message: 'Inline JavaScript is not enabled. Is it set in your options?',
filename: this.fileInfo().filename,
index: this.getIndex() };
}
expression = expression.replace(/@\{([\w-]+)\}/g, function (_, name) {
return that.jsify(new Variable('@' + name, that.getIndex(), that.fileInfo()).eval(context));
});
try {
expression = new Function('return (' + expression + ')');
} catch (e) {
throw { message: 'JavaScript evaluation error: ' + e.message + ' from `' + expression + '`' ,
filename: this.fileInfo().filename,
index: this.getIndex() };
}
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.fileInfo().filename,
index: this.getIndex() };
}
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":76,"./variable":88}],70:[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":76}],71:[function(require,module,exports){
var Ruleset = require('./ruleset'),
Value = require('./value'),
Selector = require('./selector'),
Anonymous = require('./anonymous'),
Expression = require('./expression'),
AtRule = require('./atrule'),
utils = require('../utils');
var Media = function (value, features, index, currentFileInfo, visibilityInfo) {
this._index = index;
this._fileInfo = currentFileInfo;
var selectors = (new Selector([], null, null, this._index, this._fileInfo)).createEmptySelectors();
this.features = new Value(features);
this.rules = [new Ruleset(selectors, value)];
this.rules[0].allowImports = true;
this.copyVisibilityInfo(visibilityInfo);
this.allowRoot = true;
this.setParent(selectors, this);
this.setParent(this.features, this);
this.setParent(this.rules, this);
};
Media.prototype = new AtRule();
Media.prototype.type = 'Media';
Media.prototype.isRulesetLike = function() { return 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._fileInfo, 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._fileInfo, this.visibilityInfo());
if (this.debugInfo) {
this.rules[0].debugInfo = this.debugInfo;
media.debugInfo = this.debugInfo;
}
media.features = this.features.eval(context);
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.getIndex(), this.fileInfo())).createEmptySelectors();
result = new Ruleset(selectors, context.mediaBlocks);
result.multiMedia = true;
result.copyVisibilityInfo(this.visibilityInfo());
this.setParent(result, this);
}
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);
}));
this.setParent(this.features, this);
// 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(utils.copyArray(selectors), [this.rules[0]])];
this.setParent(this.rules, this);
};
module.exports = Media;
},{"../utils":89,"./anonymous":50,"./atrule":52,"./expression":64,"./ruleset":81,"./selector":82,"./value":86}],72:[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._fileInfo = currentFileInfo;
this.important = important;
this.allowRoot = true;
this.setParent(this.selector, this);
};
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;
this.selector = this.selector.eval(context);
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.getIndex(), filename: this.fileInfo().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.getIndex(), filename: this.fileInfo().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.getIndex(), filename: this.fileInfo().filename };
} else {
throw { type: 'Name',
message: this.selector.toCSS().trim() + ' is undefined',
index: this.getIndex(), filename: this.fileInfo().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":25,"./mixin-definition":73,"./node":76,"./selector":82}],73:[function(require,module,exports){
var Selector = require('./selector'),
Element = require('./element'),
Ruleset = require('./ruleset'),
Declaration = require('./declaration'),
DetachedRuleset = require('./detached-ruleset'),
Expression = require('./expression'),
contexts = require('../contexts'),
utils = require('../utils');
var Definition = function (name, params, rules, condition, variadic, frames, visibilityInfo) {
this.name = name || 'anonymous mixin';
this.selectors = [new Selector([new Element(null, name, false, this._index, this._fileInfo)])];
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 = utils.copyArray(this.params),
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 = utils.copyArray(args);
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 Declaration(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 Declaration(name, new Expression(varargs).eval(context)));
} else {
val = arg && arg.value;
if (val) {
// This was a mixin call, pass in a detached ruleset of it's eval'd rules
if (Array.isArray(val)) {
val = new DetachedRuleset(new Ruleset('', val));
}
else {
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 Declaration(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 || utils.copyArray(context.frames));
};
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 Declaration('@arguments', new Expression(_arguments).eval(context)));
rules = utils.copyArray(this.rules);
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":13,"../utils":89,"./declaration":60,"./detached-ruleset":61,"./element":63,"./expression":64,"./ruleset":81,"./selector":82}],74:[function(require,module,exports){
var Node = require('./node'),
Variable = require('./variable'),
Ruleset = require('./ruleset'),
Selector = require('./selector');
var NamespaceValue = function (ruleCall, lookups, important, index, fileInfo) {
this.value = ruleCall;
this.lookups = lookups;
this.important = important;
this._index = index;
this._fileInfo = fileInfo;
};
NamespaceValue.prototype = new Node();
NamespaceValue.prototype.type = 'NamespaceValue';
NamespaceValue.prototype.eval = function (context) {
var i, j, name, rules = this.value.eval(context);
for (i = 0; i < this.lookups.length; i++) {
name = this.lookups[i];
/**
* Eval'd DRs return rulesets.
* Eval'd mixins return rules, so let's make a ruleset if we need it.
* We need to do this because of late parsing of values
*/
if (Array.isArray(rules)) {
rules = new Ruleset([new Selector()], rules);
}
if (name === '') {
rules = rules.lastDeclaration();
}
else if (name.charAt(0) === '@') {
if (name.charAt(1) === '@') {
name = '@' + new Variable(name.substr(1)).eval(context).value;
}
if (rules.variables) {
rules = rules.variable(name);
}
if (!rules) {
throw { type: 'Name',
message: 'variable ' + name + ' not found',
filename: this.fileInfo().filename,
index: this.getIndex() };
}
}
else {
if (name.substring(0, 2) === '$@') {
name = '$' + new Variable(name.substr(1)).eval(context).value;
}
else {
name = name.charAt(0) === '$' ? name : '$' + name;
}
if (rules.properties) {
rules = rules.property(name);
}
if (!rules) {
throw { type: 'Name',
message: 'property "' + name.substr(1) + '" not found',
filename: this.fileInfo().filename,
index: this.getIndex() };
}
// Properties are an array of values, since a ruleset can have multiple props.
// We pick the last one (the "cascaded" value)
rules = rules[rules.length - 1];
}
if (rules.value) {
rules = rules.eval(context).value;
}
if (rules.ruleset) {
rules = rules.ruleset.eval(context);
}
}
return rules;
};
module.exports = NamespaceValue;
},{"./node":76,"./ruleset":81,"./selector":82,"./variable":88}],75:[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":62,"./node":76,"./operation":77}],76:[function(require,module,exports){
var Node = function() {
this.parent = null;
this.visibilityBlocks = undefined;
this.nodeVisible = undefined;
this.rootNode = null;
this.parsed = null;
var self = this;
Object.defineProperty(this, 'currentFileInfo', {
get: function() { return self.fileInfo(); }
});
Object.defineProperty(this, 'index', {
get: function() { return self.getIndex(); }
});
};
Node.prototype.setParent = function(nodes, parent) {
function set(node) {
if (node && node instanceof Node) {
node.parent = parent;
}
}
if (Array.isArray(nodes)) {
nodes.forEach(set);
}
else {
set(nodes);
}
};
Node.prototype.getIndex = function() {
return this._index || (this.parent && this.parent.getIndex()) || 0;
};
Node.prototype.fileInfo = function() {
return this._fileInfo || (this.parent && this.parent.fileInfo()) || {};
};
Node.prototype.isRulesetLike = function() { return false; };
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) ? Number((value + 2e-16).toFixed(precision)) : value;
};
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;
},{}],77:[function(require,module,exports){
var Node = require('./node'),
Color = require('./color'),
Dimension = require('./dimension'),
MATH = require('../constants').Math;
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.visitArray(this.operands);
};
Operation.prototype.eval = function (context) {
var a = this.operands[0].eval(context),
b = this.operands[1].eval(context),
op;
if (context.isMathOn(this.op)) {
op = this.op === './' ? '/' : this.op;
if (a instanceof Dimension && b instanceof Color) {
a = a.toColor();
}
if (b instanceof Dimension && a instanceof Color) {
b = b.toColor();
}
if (!a.operate) {
if (a instanceof Operation && a.op === '/' && context.math === MATH.PARENS_DIVISION) {
return new Operation(this.op, [a, b], this.isSpaced);
}
throw { type: 'Operation',
message: 'Operation on an invalid type' };
}
return a.operate(context, 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;
},{"../constants":12,"./color":55,"./dimension":62,"./node":76}],78:[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":76}],79:[function(require,module,exports){
var Node = require('./node'),
Declaration = require('./declaration');
var Property = function (name, index, currentFileInfo) {
this.name = name;
this._index = index;
this._fileInfo = currentFileInfo;
};
Property.prototype = new Node();
Property.prototype.type = 'Property';
Property.prototype.eval = function (context) {
var property, name = this.name;
// TODO: shorten this reference
var mergeRules = context.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;
if (this.evaluating) {
throw { type: 'Name',
message: 'Recursive property reference for ' + name,
filename: this.fileInfo().filename,
index: this.getIndex() };
}
this.evaluating = true;
property = this.find(context.frames, function (frame) {
var v, vArr = frame.property(name);
if (vArr) {
for (var i = 0; i < vArr.length; i++) {
v = vArr[i];
vArr[i] = new Declaration(v.name,
v.value,
v.important,
v.merge,
v.index,
v.currentFileInfo,
v.inline,
v.variable
);
}
mergeRules(vArr);
v = vArr[vArr.length - 1];
if (v.important) {
var importantScope = context.importantScope[context.importantScope.length - 1];
importantScope.important = v.important;
}
v = v.value.eval(context);
return v;
}
});
if (property) {
this.evaluating = false;
return property;
} else {
throw { type: 'Name',
message: 'Property \'' + name + '\' is undefined',
filename: this.currentFileInfo.filename,
index: this.index };
}
};
Property.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 = Property;
},{"./declaration":60,"./node":76}],80:[function(require,module,exports){
var Node = require('./node'),
Variable = require('./variable'),
Property = require('./property');
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._fileInfo = currentFileInfo;
this.variableRegex = /@\{([\w-]+)\}/g;
this.propRegex = /\$\{([\w-]+)\}/g;
};
Quoted.prototype = new Node();
Quoted.prototype.type = 'Quoted';
Quoted.prototype.genCSS = function (context, output) {
if (!this.escaped) {
output.add(this.quote, this.fileInfo(), this.getIndex());
}
output.add(this.value);
if (!this.escaped) {
output.add(this.quote);
}
};
Quoted.prototype.containsVariables = function() {
return this.value.match(this.variableRegex);
};
Quoted.prototype.eval = function (context) {
var that = this, value = this.value;
var variableReplacement = function (_, name) {
var v = new Variable('@' + name, that.getIndex(), that.fileInfo()).eval(context, true);
return (v instanceof Quoted) ? v.value : v.toCSS();
};
var propertyReplacement = function (_, name) {
var v = new Property('$' + name, that.getIndex(), that.fileInfo()).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, this.variableRegex, variableReplacement);
value = iterativeReplace(value, this.propRegex, propertyReplacement);
return new Quoted(this.quote + value + this.quote, value, this.escaped, this.getIndex(), this.fileInfo());
};
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;
},{"./node":76,"./property":79,"./variable":88}],81:[function(require,module,exports){
var Node = require('./node'),
Declaration = require('./declaration'),
Keyword = require('./keyword'),
Comment = require('./comment'),
Paren = require('./paren'),
Selector = require('./selector'),
Element = require('./element'),
Anonymous = require('./anonymous'),
contexts = require('../contexts'),
globalFunctionRegistry = require('../functions/function-registry'),
defaultFunc = require('../functions/default'),
getDebugInfo = require('./debug-info'),
utils = require('../utils');
var Ruleset = function (selectors, rules, strictImports, visibilityInfo) {
this.selectors = selectors;
this.rules = rules;
this._lookups = {};
this._variables = null;
this._properties = null;
this.strictImports = strictImports;
this.copyVisibilityInfo(visibilityInfo);
this.allowRoot = true;
this.setParent(this.selectors, this);
this.setParent(this.rules, this);
};
Ruleset.prototype = new Node();
Ruleset.prototype.type = 'Ruleset';
Ruleset.prototype.isRuleset = true;
Ruleset.prototype.isRulesetLike = function() { return 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 that = this, selectors, selCnt, selector, i, hasVariable, hasOnePassingSelector = false;
if (this.selectors && (selCnt = this.selectors.length)) {
selectors = new Array(selCnt);
defaultFunc.error({
type: 'Syntax',
message: 'it is currently only allowed in parametric mixin guards,'
});
for (i = 0; i < selCnt; i++) {
selector = this.selectors[i].eval(context);
for (var j = 0; j < selector.elements.length; j++) {
if (selector.elements[j].isVariable) {
hasVariable = true;
break;
}
}
selectors[i] = selector;
if (selector.evaldCondition) {
hasOnePassingSelector = true;
}
}
if (hasVariable) {
var toParseSelectors = new Array(selCnt);
for (i = 0; i < selCnt; i++) {
selector = selectors[i];
toParseSelectors[i] = selector.toCSS(context);
}
this.parse.parseNode(
toParseSelectors.join(','),
["selectors"],
selectors[0].getIndex(),
selectors[0].fileInfo(),
function(err, result) {
if (result) {
selectors = utils.flattenArray(result);
}
});
}
defaultFunc.reset();
} else {
hasOnePassingSelector = true;
}
var rules = this.rules ? utils.copyArray(this.rules) : 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;
for (i = 0; (rule = rsRules[i]); i++) {
if (rule.evalFirst) {
rsRules[i] = rule.eval(context);
}
}
var mediaBlockCount = (context.mediaBlocks && context.mediaBlocks.length) || 0;
// Evaluate mixin calls.
for (i = 0; (rule = rsRules[i]); i++) {
if (rule.type === 'MixinCall') {
/* jshint loopfunc:true */
rules = rule.eval(context).filter(function(r) {
if ((r instanceof Declaration) && 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));
i += rules.length - 1;
ruleset.resetCache();
} else if (rule.type === 'VariableCall') {
/* jshint loopfunc:true */
rules = rule.eval(context).rules.filter(function(r) {
if ((r instanceof Declaration) && r.variable) {
// do not pollute the scope at all
return false;
}
return true;
});
rsRules.splice.apply(rsRules, [i, 1].concat(rules));
i += rules.length - 1;
ruleset.resetCache();
}
}
// Evaluate everything else
for (i = 0; (rule = rsRules[i]); i++) {
if (!rule.evalFirst) {
rsRules[i] = rule = rule.eval ? rule.eval(context) : rule;
}
}
// Evaluate everything else
for (i = 0; (rule = rsRules[i]); 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] && rule.selectors[0].isJustParentSelector()) {
rsRules.splice(i--, 1);
for (var j = 0; (subRule = rule.rules[j]); j++) {
if (subRule instanceof Node) {
subRule.copyVisibilityInfo(rule.visibilityInfo());
if (!(subRule instanceof Declaration) || !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._properties = null;
this._lookups = {};
};
Ruleset.prototype.variables = function () {
if (!this._variables) {
this._variables = !this.rules ? {} : this.rules.reduce(function (hash, r) {
if (r instanceof Declaration && 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] = r.root.variable(name);
}
}
}
return hash;
}, {});
}
return this._variables;
};
Ruleset.prototype.properties = function () {
if (!this._properties) {
this._properties = !this.rules ? {} : this.rules.reduce(function (hash, r) {
if (r instanceof Declaration && r.variable !== true) {
var name = (r.name.length === 1) && (r.name[0] instanceof Keyword) ?
r.name[0].value : r.name;
// Properties don't overwrite as they can merge
if (!hash['$' + name]) {
hash['$' + name] = [ r ];
}
else {
hash['$' + name].push(r);
}
}
return hash;
}, {});
}
return this._properties;
};
Ruleset.prototype.variable = function (name) {
var decl = this.variables()[name];
if (decl) {
return this.parseValue(decl);
}
};
Ruleset.prototype.property = function (name) {
var decl = this.properties()[name];
if (decl) {
return this.parseValue(decl);
}
};
Ruleset.prototype.lastDeclaration = function () {
for (var i = this.rules.length; i > 0; i--) {
var decl = this.rules[i - 1];
if (decl instanceof Declaration) {
return this.parseValue(decl);
}
}
};
Ruleset.prototype.parseValue = function(toParse) {
var self = this;
function transformDeclaration(decl) {
if (decl.value instanceof Anonymous && !decl.parsed) {
if (typeof decl.value.value === 'string') {
this.parse.parseNode(
decl.value.value,
['value', 'important'],
decl.value.getIndex(),
decl.fileInfo(),
function(err, result) {
if (err) {
decl.parsed = true;
}
if (result) {
decl.value = result[0];
decl.important = result[1] || '';
decl.parsed = true;
}
});
} else {
decl.parsed = true;
}
return decl;
}
else {
return decl;
}
}
if (!Array.isArray(toParse)) {
return transformDeclaration.call(self, toParse);
}
else {
var nodes = [];
toParse.forEach(function(n) {
nodes.push(transformDeclaration.call(self, n));
});
return nodes;
}
};
Ruleset.prototype.rulesets = function () {
if (!this.rules) { return []; }
var filtRules = [], rules = this.rules,
i, rule;
for (i = 0; (rule = rules[i]); 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 ];
}
this.setParent(rule, this);
};
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;
var charsetNodeIndex = 0;
var importNodeIndex = 0;
for (i = 0; (rule = this.rules[i]); i++) {
if (rule instanceof 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; (rule = ruleNodes[i]); i++) {
if (i + 1 === ruleNodes.length) {
context.lastRule = true;
}
var currentLastRule = context.lastRule;
if (rule.isRulesetLike(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 && rule.isVisible()) {
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 = new Array(elementsToPak.length);
for (j = 0; j < elementsToPak.length; j++) {
insideParent[j] = new Element(
null,
elementsToPak[j],
originalElement.isVariable,
originalElement._index,
originalElement._fileInfo
);
}
replacementParen = new Paren(new Selector(insideParent));
}
return replacementParen;
}
function createSelector(containedElement, originalElement) {
var element, selector;
element = new Element(null, containedElement, originalElement.isVariable, originalElement._index, originalElement._fileInfo);
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 = utils.copyArray(beginningPath);
lastSelector = newSelectorPath.pop();
newJoinedSelector = originalSelector.createDerived(utils.copyArray(lastSelector.elements));
}
else {
newJoinedSelector = originalSelector.createDerived([]);
}
if (addPath.length > 0) {
// /deep/ is a CSS4 selector - (removed, so should deprecate)
// 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.isVariable,
replacedElement._index,
replacedElement._fileInfo
));
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; (sel = selectors[i]); 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 instanceof Paren)) {
return null;
}
maybeSelector = element.value.value;
if (!(maybeSelector instanceof 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; (el = inSelector.elements[i]); 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.isVariable, el._index, el._fileInfo));
}
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);
}
}
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].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":13,"../functions/default":25,"../functions/function-registry":27,"../utils":89,"./anonymous":50,"./comment":57,"./debug-info":59,"./declaration":60,"./element":63,"./keyword":70,"./node":76,"./paren":78,"./selector":82}],82:[function(require,module,exports){
var Node = require('./node'),
Element = require('./element'),
LessError = require('../less-error');
var Selector = function (elements, extendList, condition, index, currentFileInfo, visibilityInfo) {
this.extendList = extendList;
this.condition = condition;
this.evaldCondition = !condition;
this._index = index;
this._fileInfo = currentFileInfo;
this.elements = this.getElements(elements);
this.mixinElements_ = undefined;
this.copyVisibilityInfo(visibilityInfo);
this.setParent(this.elements, this);
};
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) {
elements = this.getElements(elements);
var newSelector = new Selector(elements, extendList || this.extendList,
null, this.getIndex(), this.fileInfo(), this.visibilityInfo());
newSelector.evaldCondition = (evaldCondition != null) ? evaldCondition : this.evaldCondition;
newSelector.mediaEmpty = this.mediaEmpty;
return newSelector;
};
Selector.prototype.getElements = function(els) {
if (!els) {
return [new Element('', '&', false, this._index, this._fileInfo)];
}
if (typeof els === 'string') {
this.parse.parseNode(
els,
['selector'],
this._index,
this._fileInfo,
function(err, result) {
if (err) {
throw new LessError({
index: err.index,
message: err.message
}, this.parse.imports, this._fileInfo.filename);
}
els = result[0].elements;
});
}
return els;
};
Selector.prototype.createEmptySelectors = function() {
var el = new Element('', '&', false, this._index, this._fileInfo),
sels = [new Selector([el], null, null, this._index, this._fileInfo)];
sels[0].mediaEmpty = true;
return sels;
};
Selector.prototype.match = function (other) {
var elements = this.elements,
len = elements.length,
olen, i;
other = other.mixinElements();
olen = other.length;
if (olen === 0 || len < olen) {
return 0;
} else {
for (i = 0; i < olen; i++) {
if (elements[i].value !== other[i]) {
return 0;
}
}
}
return olen; // return number of matched elements
};
Selector.prototype.mixinElements = function() {
if (this.mixinElements_) {
return this.mixinElements_;
}
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 = [];
}
return (this.mixinElements_ = 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.fileInfo(), this.getIndex());
}
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;
},{"../less-error":38,"./element":63,"./node":76}],83:[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":76}],84:[function(require,module,exports){
var Node = require('./node'),
unitConversions = require('../data/unit-conversions'),
utils = require('../utils');
var Unit = function (numerator, denominator, backupUnit) {
this.numerator = numerator ? utils.copyArray(numerator).sort() : [];
this.denominator = denominator ? utils.copyArray(denominator).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(utils.copyArray(this.numerator), utils.copyArray(this.denominator), 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 RegExp('^(px|em|ex|ch|rem|in|cm|mm|pc|pt|ex|vw|vh|vmin|vmax)$', 'gi').test(this.toCSS());
};
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":16,"../utils":89,"./node":76}],85:[function(require,module,exports){
var Node = require('./node');
var URL = function (val, index, currentFileInfo, isEvald) {
this.value = val;
this._index = index;
this._fileInfo = currentFileInfo;
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 rootpath if the URL requires a rewrite
rootpath = this.fileInfo() && this.fileInfo().rootpath;
if (typeof rootpath === 'string' &&
typeof val.value === 'string' &&
context.pathRequiresRewrite(val.value)) {
if (!val.quote) {
rootpath = escapePath(rootpath);
}
val.value = context.rewritePath(val.value, rootpath);
} else {
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.getIndex(), this.fileInfo(), true);
};
function escapePath(path) {
return path.replace(/[\(\)'"\s]/g, function(match) { return '\\' + match; });
}
module.exports = URL;
},{"./node":76}],86:[function(require,module,exports){
var Node = require('./node');
var Value = function (value) {
if (!value) {
throw new Error('Value requires an array argument');
}
if (!Array.isArray(value)) {
this.value = [ value ];
}
else {
this.value = value;
}
};
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":76}],87:[function(require,module,exports){
var Node = require('./node'),
Variable = require('./variable'),
Ruleset = require('./ruleset'),
DetachedRuleset = require('./detached-ruleset'),
LessError = require('../less-error');
var VariableCall = function (variable, index, currentFileInfo) {
this.variable = variable;
this._index = index;
this._fileInfo = currentFileInfo;
this.allowRoot = true;
};
VariableCall.prototype = new Node();
VariableCall.prototype.type = 'VariableCall';
VariableCall.prototype.eval = function (context) {
var rules, detachedRuleset = new Variable(this.variable, this.getIndex(), this.fileInfo()).eval(context),
error = new LessError({message: 'Could not evaluate variable call ' + this.variable});
if (!detachedRuleset.ruleset) {
if (detachedRuleset.rules) {
rules = detachedRuleset;
}
else if (Array.isArray(detachedRuleset)) {
rules = new Ruleset('', detachedRuleset);
}
else if (Array.isArray(detachedRuleset.value)) {
rules = new Ruleset('', detachedRuleset.value);
}
else {
throw error;
}
detachedRuleset = new DetachedRuleset(rules);
}
if (detachedRuleset.ruleset) {
return detachedRuleset.callEval(context);
}
throw error;
};
module.exports = VariableCall;
},{"../less-error":38,"./detached-ruleset":61,"./node":76,"./ruleset":81,"./variable":88}],88:[function(require,module,exports){
var Node = require('./node'),
Call = require('./call');
var Variable = function (name, index, currentFileInfo) {
this.name = name;
this._index = index;
this._fileInfo = 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.getIndex(), this.fileInfo()).eval(context).value;
}
if (this.evaluating) {
throw { type: 'Name',
message: 'Recursive variable definition for ' + name,
filename: this.fileInfo().filename,
index: this.getIndex() };
}
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;
}
// If in calc, wrap vars in a function call to cascade evaluate args first
if (context.inCalc) {
return (new Call('_SELF', [v.value])).eval(context);
}
else {
return v.value.eval(context);
}
}
});
if (variable) {
this.evaluating = false;
return variable;
} else {
throw { type: 'Name',
message: 'variable ' + name + ' is undefined',
filename: this.fileInfo().filename,
index: this.getIndex() };
}
};
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;
},{"./call":54,"./node":76}],89:[function(require,module,exports){
/* jshint proto: true */
var Constants = require('./constants');
var clone = require('clone');
var utils = {
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
};
},
copyArray: function(arr) {
var i, length = arr.length,
copy = new Array(length);
for (i = 0; i < length; i++) {
copy[i] = arr[i];
}
return copy;
},
clone: function (obj) {
var cloned = {};
for (var prop in obj) {
if (obj.hasOwnProperty(prop)) {
cloned[prop] = obj[prop];
}
}
return cloned;
},
copyOptions: function(obj1, obj2) {
if (obj2 && obj2._defaults) {
return obj2;
}
var opts = utils.defaults(obj1, obj2);
if (opts.strictMath) {
opts.math = Constants.Math.STRICT_LEGACY;
}
// Back compat with changed relativeUrls option
if (opts.relativeUrls) {
opts.rewriteUrls = Constants.RewriteUrls.ALL;
}
if (typeof opts.math === 'string') {
switch (opts.math.toLowerCase()) {
case 'always':
opts.math = Constants.Math.ALWAYS;
break;
case 'parens-division':
opts.math = Constants.Math.PARENS_DIVISION;
break;
case 'strict':
case 'parens':
opts.math = Constants.Math.PARENS;
break;
case 'strict-legacy':
opts.math = Constants.Math.STRICT_LEGACY;
}
}
if (typeof opts.rewriteUrls === 'string') {
switch (opts.rewriteUrls.toLowerCase()) {
case 'off':
opts.rewriteUrls = Constants.RewriteUrls.OFF;
break;
case 'local':
opts.rewriteUrls = Constants.RewriteUrls.LOCAL;
break;
case 'all':
opts.rewriteUrls = Constants.RewriteUrls.ALL;
break;
}
}
return opts;
},
defaults: function(obj1, obj2) {
var newObj = obj2 || {};
if (!obj2._defaults) {
newObj = {};
var defaults = clone(obj1);
newObj._defaults = defaults;
var cloned = obj2 ? clone(obj2) : {};
Object.assign(newObj, defaults, cloned);
}
return newObj;
},
merge: function(obj1, obj2) {
for (var prop in obj2) {
if (obj2.hasOwnProperty(prop)) {
obj1[prop] = obj2[prop];
}
}
return obj1;
},
flattenArray: function(arr, result) {
result = result || [];
for (var i = 0, length = arr.length; i < length; i++) {
var value = arr[i];
if (Array.isArray(value)) {
utils.flattenArray(value, result);
} else {
if (value !== undefined) {
result.push(value);
}
}
}
return result;
}
};
module.exports = utils;
},{"./constants":12,"clone":100}],90:[function(require,module,exports){
var tree = require('../tree'),
Visitor = require('./visitor'),
logger = require('../logger'),
utils = require('../utils');
/* 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;
},
visitDeclaration: function (declNode, 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 ? utils.copyArray(selExtendList).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;
},
visitAtRule: function (atRuleNode, visitArgs) {
atRuleNode.allExtends = [];
this.allExtendsStack.push(atRuleNode.allExtends);
},
visitAtRuleOut: function (atRuleNode) {
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.fileInfo(), 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;
}
},
visitDeclaration: 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].isVariable,
replacementSelector.elements[0].getIndex(),
replacementSelector.elements[0].fileInfo()
);
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;
},
visitAtRule: function (atRuleNode, visitArgs) {
var newAllExtends = atRuleNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, atRuleNode.allExtends));
this.allExtendsStack.push(newAllExtends);
},
visitAtRuleOut: function (atRuleNode) {
var lastIndex = this.allExtendsStack.length - 1;
this.allExtendsStack.length = lastIndex;
}
};
module.exports = ProcessExtendsVisitor;
},{"../logger":39,"../tree":67,"../utils":89,"./visitor":97}],91:[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;
},{}],92:[function(require,module,exports){
var contexts = require('../contexts'),
Visitor = require('./visitor'),
ImportSequencer = require('./import-sequencer'),
utils = require('../utils');
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, utils.copyArray(this.context.frames));
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.getIndex(); e.filename = importNode.fileInfo().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.fileInfo(),
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.getIndex(); e.filename = importNode.fileInfo().filename;
}
this.error = e;
}
var importVisitor = this,
inlineCSS = importNode.options.inline,
isPlugin = importNode.options.isPlugin,
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();
}
},
visitDeclaration: function (declNode, visitArgs) {
if (declNode.value.type === 'DetachedRuleset') {
this.context.frames.unshift(declNode);
} else {
visitArgs.visitDeeper = false;
}
},
visitDeclarationOut: function(declNode) {
if (declNode.value.type === 'DetachedRuleset') {
this.context.frames.shift();
}
},
visitAtRule: function (atRuleNode, visitArgs) {
this.context.frames.unshift(atRuleNode);
},
visitAtRuleOut: function (atRuleNode) {
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":13,"../utils":89,"./import-sequencer":91,"./visitor":97}],93:[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":90,"./import-visitor":92,"./join-selector-visitor":94,"./set-tree-visibility-visitor":95,"./to-css-visitor":96,"./visitor":97}],94:[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);
},
visitDeclaration: function (declNode, 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);
},
visitAtRule: function (atRuleNode, visitArgs) {
var context = this.contexts[this.contexts.length - 1];
if (atRuleNode.rules && atRuleNode.rules.length) {
atRuleNode.rules[0].root = (atRuleNode.isRooted || context.length === 0 || null);
}
}
};
module.exports = JoinSelectorVisitor;
},{"./visitor":97}],95:[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;
},{}],96:[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) {
return false;
}
for (var r = 0; r < bodyRules.length; r++) {
rule = bodyRules[r];
if (rule.isSilent && rule.isSilent(this._context) && !rule.blocksVisibility()) {
// the atrule 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 && owner.rules) {
owner.rules = owner.rules.filter(function(thing) {
return thing.isVisible();
});
}
},
isEmpty: function(owner) {
return (owner && owner.rules)
? (owner.rules.length === 0) : true;
},
hasVisibleSelector: function(rulesetNode) {
return (rulesetNode && rulesetNode.paths)
? (rulesetNode.paths.length > 0) : false;
},
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);
},
visitDeclaration: function (declNode, visitArgs) {
if (declNode.blocksVisibility() || declNode.variable) {
return;
}
return declNode;
},
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;
},
visitAtRule: function(atRuleNode, visitArgs) {
if (atRuleNode.rules && atRuleNode.rules.length) {
return this.visitAtRuleWithBody(atRuleNode, visitArgs);
} else {
return this.visitAtRuleWithoutBody(atRuleNode, visitArgs);
}
},
visitAnonymous: function(anonymousNode, visitArgs) {
if (!anonymousNode.blocksVisibility()) {
anonymousNode.accept(this._visitor);
return anonymousNode;
}
},
visitAtRuleWithBody: function(atRuleNode, visitArgs) {
// if there is only one nested ruleset and that one has no path, then it is
// just fake ruleset
function hasFakeRuleset(atRuleNode) {
var bodyRules = atRuleNode.rules;
return bodyRules.length === 1 && (!bodyRules[0].paths || bodyRules[0].paths.length === 0);
}
function getBodyRules(atRuleNode) {
var nodeRules = atRuleNode.rules;
if (hasFakeRuleset(atRuleNode)) {
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(atRuleNode);
atRuleNode.accept(this._visitor);
visitArgs.visitDeeper = false;
if (!this.utils.isEmpty(atRuleNode)) {
this._mergeRules(atRuleNode.rules[0].rules);
}
return this.utils.resolveVisibility(atRuleNode, originalRules);
},
visitAtRuleWithoutBody: function(atRuleNode, visitArgs) {
if (atRuleNode.blocksVisibility()) {
return;
}
if (atRuleNode.name === '@charset') {
// Only output the debug info together with subsequent @charset definitions
// a comment (or @media statement) before the actual @charset atrule would
// be considered illegal css as it has to be on the first line
if (this.charset) {
if (atRuleNode.debugInfo) {
var comment = new tree.Comment('/* ' + atRuleNode.toCSS(this._context).replace(/\n/g, '') + ' */\n');
comment.debugInfo = atRuleNode.debugInfo;
return this._visitor.visit(comment);
}
return;
}
this.charset = true;
}
return atRuleNode;
},
checkValidNodes: function(rules, isRoot) {
if (!rules) {
return;
}
for (var i = 0; i < rules.length; i++) {
var ruleNode = rules[i];
if (isRoot && ruleNode instanceof tree.Declaration && !ruleNode.variable) {
throw { message: 'Properties must be inside selector blocks. They cannot be in the root',
index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename};
}
if (ruleNode instanceof tree.Call) {
throw { message: 'Function \'' + ruleNode.name + '\' is undefined',
index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().filename};
}
if (ruleNode.type && !ruleNode.allowRoot) {
throw { message: ruleNode.type + ' node returned by a function is not valid here',
index: ruleNode.getIndex(), filename: ruleNode.fileInfo() && ruleNode.fileInfo().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.Declaration) {
if (!ruleCache[rule.name]) {
ruleCache[rule.name] = rule;
} else {
ruleList = ruleCache[rule.name];
if (ruleList instanceof tree.Declaration) {
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 = {},
groupsArr = [];
for (var i = 0; i < rules.length; i++) {
var rule = rules[i];
if (rule.merge) {
var key = rule.name;
groups[key] ? rules.splice(i--, 1) :
groupsArr.push(groups[key] = []);
groups[key].push(rule);
}
}
groupsArr.forEach(function(group) {
if (group.length > 0) {
var result = group[0],
space = [],
comma = [new tree.Expression(space)];
group.forEach(function(rule) {
if ((rule.merge === '+') && (space.length > 0)) {
comma.push(new tree.Expression(space = []));
}
space.push(rule.value);
result.important = result.important || rule.important;
});
result.value = new tree.Value(comma);
}
});
}
};
module.exports = ToCSSVisitor;
},{"../tree":67,"./visitor":97}],97:[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) {
/* eslint guard-for-in: 0 */
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._visitInCache = {};
this._visitOutCache = {};
if (!_hasIndexed) {
indexNodeTypes(tree, 1);
_hasIndexed = true;
}
};
Visitor.prototype = {
visit: function(node) {
if (!node) {
return node;
}
var nodeTypeIndex = node.typeIndex;
if (!nodeTypeIndex) {
// MixinCall args aren't a node type?
if (node.value && node.value.typeIndex) {
this.visit(node.value);
}
return node;
}
var impl = this._implementation,
func = this._visitInCache[nodeTypeIndex],
funcOut = this._visitOutCache[nodeTypeIndex],
visitArgs = _visitArgs,
fnName;
visitArgs.visitDeeper = true;
if (!func) {
fnName = 'visit' + node.type;
func = impl[fnName] || _noop;
funcOut = impl[fnName + 'Out'] || _noop;
this._visitInCache[nodeTypeIndex] = func;
this._visitOutCache[nodeTypeIndex] = funcOut;
}
if (func !== _noop) {
var newNode = func.call(impl, node, visitArgs);
if (node && 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":67}],98:[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":99}],99:[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 : {})
},{}],100:[function(require,module,exports){
var clone = (function() {
'use strict';
function _instanceof(obj, type) {
return type != null && obj instanceof type;
}
var nativeMap;
try {
nativeMap = Map;
} catch(_) {
// maybe a reference error because no `Map`. Give it a dummy value that no
// value will ever be an instanceof.
nativeMap = function() {};
}
var nativeSet;
try {
nativeSet = Set;
} catch(_) {
nativeSet = function() {};
}
var nativePromise;
try {
nativePromise = Promise;
} catch(_) {
nativePromise = function() {};
}
/**
* Clones (copies) an Object using deep copying.
*
* This function supports circular references by default, but if you are certain
* there are no circular references in your object, you can save some CPU time
* by calling clone(obj, false).
*
* Caution: if `circular` is false and `parent` contains circular references,
* your program may enter an infinite loop and crash.
*
* @param `parent` - the object to be cloned
* @param `circular` - set to true if the object to be cloned may contain
* circular references. (optional - true by default)
* @param `depth` - set to a number if the object is only to be cloned to
* a particular depth. (optional - defaults to Infinity)
* @param `prototype` - sets the prototype to be used when cloning an object.
* (optional - defaults to parent prototype).
* @param `includeNonEnumerable` - set to true if the non-enumerable properties
* should be cloned as well. Non-enumerable properties on the prototype
* chain will be ignored. (optional - false by default)
*/
function clone(parent, circular, depth, prototype, includeNonEnumerable) {
if (typeof circular === 'object') {
depth = circular.depth;
prototype = circular.prototype;
includeNonEnumerable = circular.includeNonEnumerable;
circular = circular.circular;
}
// maintain two arrays for circular references, where corresponding parents
// and children have the same index
var allParents = [];
var allChildren = [];
var useBuffer = typeof Buffer != 'undefined';
if (typeof circular == 'undefined')
circular = true;
if (typeof depth == 'undefined')
depth = Infinity;
// recurse this function so we don't reset allParents and allChildren
function _clone(parent, depth) {
// cloning null always returns null
if (parent === null)
return null;
if (depth === 0)
return parent;
var child;
var proto;
if (typeof parent != 'object') {
return parent;
}
if (_instanceof(parent, nativeMap)) {
child = new nativeMap();
} else if (_instanceof(parent, nativeSet)) {
child = new nativeSet();
} else if (_instanceof(parent, nativePromise)) {
child = new nativePromise(function (resolve, reject) {
parent.then(function(value) {
resolve(_clone(value, depth - 1));
}, function(err) {
reject(_clone(err, depth - 1));
});
});
} else if (clone.__isArray(parent)) {
child = [];
} else if (clone.__isRegExp(parent)) {
child = new RegExp(parent.source, __getRegExpFlags(parent));
if (parent.lastIndex) child.lastIndex = parent.lastIndex;
} else if (clone.__isDate(parent)) {
child = new Date(parent.getTime());
} else if (useBuffer && Buffer.isBuffer(parent)) {
if (Buffer.allocUnsafe) {
// Node.js >= 4.5.0
child = Buffer.allocUnsafe(parent.length);
} else {
// Older Node.js versions
child = new Buffer(parent.length);
}
parent.copy(child);
return child;
} else if (_instanceof(parent, Error)) {
child = Object.create(parent);
} else {
if (typeof prototype == 'undefined') {
proto = Object.getPrototypeOf(parent);
child = Object.create(proto);
}
else {
child = Object.create(prototype);
proto = prototype;
}
}
if (circular) {
var index = allParents.indexOf(parent);
if (index != -1) {
return allChildren[index];
}
allParents.push(parent);
allChildren.push(child);
}
if (_instanceof(parent, nativeMap)) {
parent.forEach(function(value, key) {
var keyChild = _clone(key, depth - 1);
var valueChild = _clone(value, depth - 1);
child.set(keyChild, valueChild);
});
}
if (_instanceof(parent, nativeSet)) {
parent.forEach(function(value) {
var entryChild = _clone(value, depth - 1);
child.add(entryChild);
});
}
for (var i in parent) {
var attrs;
if (proto) {
attrs = Object.getOwnPropertyDescriptor(proto, i);
}
if (attrs && attrs.set == null) {
continue;
}
child[i] = _clone(parent[i], depth - 1);
}
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(parent);
for (var i = 0; i < symbols.length; i++) {
// Don't need to worry about cloning a symbol because it is a primitive,
// like a number or string.
var symbol = symbols[i];
var descriptor = Object.getOwnPropertyDescriptor(parent, symbol);
if (descriptor && !descriptor.enumerable && !includeNonEnumerable) {
continue;
}
child[symbol] = _clone(parent[symbol], depth - 1);
if (!descriptor.enumerable) {
Object.defineProperty(child, symbol, {
enumerable: false
});
}
}
}
if (includeNonEnumerable) {
var allPropertyNames = Object.getOwnPropertyNames(parent);
for (var i = 0; i < allPropertyNames.length; i++) {
var propertyName = allPropertyNames[i];
var descriptor = Object.getOwnPropertyDescriptor(parent, propertyName);
if (descriptor && descriptor.enumerable) {
continue;
}
child[propertyName] = _clone(parent[propertyName], depth - 1);
Object.defineProperty(child, propertyName, {
enumerable: false
});
}
}
return child;
}
return _clone(parent, depth);
}
/**
* Simple flat clone using prototype, accepts only objects, usefull for property
* override on FLAT configuration object (no nested props).
*
* USE WITH CAUTION! This may not behave as you wish if you do not know how this
* works.
*/
clone.clonePrototype = function clonePrototype(parent) {
if (parent === null)
return null;
var c = function () {};
c.prototype = parent;
return new c();
};
// private utility functions
function __objToStr(o) {
return Object.prototype.toString.call(o);
}
clone.__objToStr = __objToStr;
function __isDate(o) {
return typeof o === 'object' && __objToStr(o) === '[object Date]';
}
clone.__isDate = __isDate;
function __isArray(o) {
return typeof o === 'object' && __objToStr(o) === '[object Array]';
}
clone.__isArray = __isArray;
function __isRegExp(o) {
return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
}
clone.__isRegExp = __isRegExp;
function __getRegExpFlags(re) {
var flags = '';
if (re.global) flags += 'g';
if (re.ignoreCase) flags += 'i';
if (re.multiline) flags += 'm';
return flags;
}
clone.__getRegExpFlags = __getRegExpFlags;
return clone;
})();
if (typeof module === 'object' && module.exports) {
module.exports = clone;
}
},{}],101:[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":99}],102:[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":101}],103:[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)
})
}
}
},{}],104:[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":101,"./lib/es6-extensions.js":102,"./polyfill-done.js":103,"asap":98}]},{},[2])(2)
});