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eric sciple
parent
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422b9fdb15
7395 changed files with 1786235 additions and 3476 deletions
464
node_modules/cssom/lib/parse.js
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vendored
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464
node_modules/cssom/lib/parse.js
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//.CommonJS
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var CSSOM = {};
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///CommonJS
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/**
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* @param {string} token
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*/
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CSSOM.parse = function parse(token) {
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var i = 0;
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/**
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"before-selector" or
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"selector" or
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"atRule" or
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"atBlock" or
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"conditionBlock" or
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"before-name" or
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"name" or
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"before-value" or
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"value"
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*/
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var state = "before-selector";
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var index;
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var buffer = "";
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var valueParenthesisDepth = 0;
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var SIGNIFICANT_WHITESPACE = {
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"selector": true,
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"value": true,
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"value-parenthesis": true,
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"atRule": true,
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"importRule-begin": true,
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"importRule": true,
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"atBlock": true,
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"conditionBlock": true,
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'documentRule-begin': true
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};
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var styleSheet = new CSSOM.CSSStyleSheet();
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// @type CSSStyleSheet|CSSMediaRule|CSSSupportsRule|CSSFontFaceRule|CSSKeyframesRule|CSSDocumentRule
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var currentScope = styleSheet;
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// @type CSSMediaRule|CSSSupportsRule|CSSKeyframesRule|CSSDocumentRule
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var parentRule;
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var ancestorRules = [];
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var hasAncestors = false;
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var prevScope;
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var name, priority="", styleRule, mediaRule, supportsRule, importRule, fontFaceRule, keyframesRule, documentRule, hostRule;
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var atKeyframesRegExp = /@(-(?:\w+-)+)?keyframes/g;
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var parseError = function(message) {
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var lines = token.substring(0, i).split('\n');
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var lineCount = lines.length;
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var charCount = lines.pop().length + 1;
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var error = new Error(message + ' (line ' + lineCount + ', char ' + charCount + ')');
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error.line = lineCount;
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/* jshint sub : true */
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error['char'] = charCount;
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error.styleSheet = styleSheet;
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throw error;
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};
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for (var character; (character = token.charAt(i)); i++) {
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switch (character) {
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case " ":
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case "\t":
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case "\r":
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case "\n":
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case "\f":
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if (SIGNIFICANT_WHITESPACE[state]) {
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buffer += character;
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}
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break;
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// String
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case '"':
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index = i + 1;
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do {
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index = token.indexOf('"', index) + 1;
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if (!index) {
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parseError('Unmatched "');
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}
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} while (token[index - 2] === '\\');
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buffer += token.slice(i, index);
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i = index - 1;
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switch (state) {
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case 'before-value':
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state = 'value';
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break;
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case 'importRule-begin':
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state = 'importRule';
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break;
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}
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break;
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case "'":
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index = i + 1;
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do {
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index = token.indexOf("'", index) + 1;
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if (!index) {
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parseError("Unmatched '");
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}
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} while (token[index - 2] === '\\');
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buffer += token.slice(i, index);
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i = index - 1;
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switch (state) {
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case 'before-value':
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state = 'value';
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break;
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case 'importRule-begin':
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state = 'importRule';
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break;
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}
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break;
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// Comment
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case "/":
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if (token.charAt(i + 1) === "*") {
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i += 2;
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index = token.indexOf("*/", i);
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if (index === -1) {
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parseError("Missing */");
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} else {
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i = index + 1;
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}
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} else {
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buffer += character;
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}
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if (state === "importRule-begin") {
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buffer += " ";
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state = "importRule";
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}
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break;
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// At-rule
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case "@":
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if (token.indexOf("@-moz-document", i) === i) {
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state = "documentRule-begin";
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documentRule = new CSSOM.CSSDocumentRule();
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documentRule.__starts = i;
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i += "-moz-document".length;
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buffer = "";
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break;
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} else if (token.indexOf("@media", i) === i) {
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state = "atBlock";
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mediaRule = new CSSOM.CSSMediaRule();
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mediaRule.__starts = i;
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i += "media".length;
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buffer = "";
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break;
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} else if (token.indexOf("@supports", i) === i) {
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state = "conditionBlock";
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supportsRule = new CSSOM.CSSSupportsRule();
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supportsRule.__starts = i;
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i += "supports".length;
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buffer = "";
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break;
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} else if (token.indexOf("@host", i) === i) {
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state = "hostRule-begin";
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i += "host".length;
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hostRule = new CSSOM.CSSHostRule();
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hostRule.__starts = i;
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buffer = "";
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break;
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} else if (token.indexOf("@import", i) === i) {
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state = "importRule-begin";
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i += "import".length;
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buffer += "@import";
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break;
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} else if (token.indexOf("@font-face", i) === i) {
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state = "fontFaceRule-begin";
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i += "font-face".length;
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fontFaceRule = new CSSOM.CSSFontFaceRule();
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fontFaceRule.__starts = i;
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buffer = "";
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break;
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} else {
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atKeyframesRegExp.lastIndex = i;
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var matchKeyframes = atKeyframesRegExp.exec(token);
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if (matchKeyframes && matchKeyframes.index === i) {
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state = "keyframesRule-begin";
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keyframesRule = new CSSOM.CSSKeyframesRule();
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keyframesRule.__starts = i;
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keyframesRule._vendorPrefix = matchKeyframes[1]; // Will come out as undefined if no prefix was found
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i += matchKeyframes[0].length - 1;
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buffer = "";
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break;
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} else if (state === "selector") {
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state = "atRule";
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}
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}
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buffer += character;
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break;
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case "{":
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if (state === "selector" || state === "atRule") {
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styleRule.selectorText = buffer.trim();
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styleRule.style.__starts = i;
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buffer = "";
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state = "before-name";
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} else if (state === "atBlock") {
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mediaRule.media.mediaText = buffer.trim();
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if (parentRule) {
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ancestorRules.push(parentRule);
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}
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currentScope = parentRule = mediaRule;
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mediaRule.parentStyleSheet = styleSheet;
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buffer = "";
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state = "before-selector";
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} else if (state === "conditionBlock") {
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supportsRule.conditionText = buffer.trim();
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if (parentRule) {
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ancestorRules.push(parentRule);
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}
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currentScope = parentRule = supportsRule;
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supportsRule.parentStyleSheet = styleSheet;
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buffer = "";
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state = "before-selector";
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} else if (state === "hostRule-begin") {
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if (parentRule) {
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ancestorRules.push(parentRule);
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}
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currentScope = parentRule = hostRule;
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hostRule.parentStyleSheet = styleSheet;
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buffer = "";
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state = "before-selector";
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} else if (state === "fontFaceRule-begin") {
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if (parentRule) {
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ancestorRules.push(parentRule);
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fontFaceRule.parentRule = parentRule;
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}
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fontFaceRule.parentStyleSheet = styleSheet;
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styleRule = fontFaceRule;
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buffer = "";
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state = "before-name";
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} else if (state === "keyframesRule-begin") {
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keyframesRule.name = buffer.trim();
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if (parentRule) {
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ancestorRules.push(parentRule);
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keyframesRule.parentRule = parentRule;
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}
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keyframesRule.parentStyleSheet = styleSheet;
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currentScope = parentRule = keyframesRule;
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buffer = "";
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state = "keyframeRule-begin";
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} else if (state === "keyframeRule-begin") {
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styleRule = new CSSOM.CSSKeyframeRule();
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styleRule.keyText = buffer.trim();
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styleRule.__starts = i;
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buffer = "";
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state = "before-name";
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} else if (state === "documentRule-begin") {
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// FIXME: what if this '{' is in the url text of the match function?
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documentRule.matcher.matcherText = buffer.trim();
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if (parentRule) {
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ancestorRules.push(parentRule);
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documentRule.parentRule = parentRule;
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}
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currentScope = parentRule = documentRule;
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documentRule.parentStyleSheet = styleSheet;
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buffer = "";
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state = "before-selector";
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}
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break;
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case ":":
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if (state === "name") {
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name = buffer.trim();
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buffer = "";
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state = "before-value";
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} else {
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buffer += character;
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}
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break;
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case "(":
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if (state === 'value') {
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// ie css expression mode
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if (buffer.trim() === 'expression') {
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var info = (new CSSOM.CSSValueExpression(token, i)).parse();
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if (info.error) {
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parseError(info.error);
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} else {
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buffer += info.expression;
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i = info.idx;
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}
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} else {
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state = 'value-parenthesis';
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//always ensure this is reset to 1 on transition
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//from value to value-parenthesis
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valueParenthesisDepth = 1;
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buffer += character;
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}
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} else if (state === 'value-parenthesis') {
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valueParenthesisDepth++;
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buffer += character;
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} else {
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buffer += character;
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}
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break;
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case ")":
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if (state === 'value-parenthesis') {
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valueParenthesisDepth--;
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if (valueParenthesisDepth === 0) state = 'value';
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}
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buffer += character;
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break;
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case "!":
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if (state === "value" && token.indexOf("!important", i) === i) {
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priority = "important";
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i += "important".length;
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} else {
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buffer += character;
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}
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break;
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case ";":
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switch (state) {
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case "value":
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styleRule.style.setProperty(name, buffer.trim(), priority);
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priority = "";
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buffer = "";
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state = "before-name";
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break;
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case "atRule":
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buffer = "";
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state = "before-selector";
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break;
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case "importRule":
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importRule = new CSSOM.CSSImportRule();
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importRule.parentStyleSheet = importRule.styleSheet.parentStyleSheet = styleSheet;
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importRule.cssText = buffer + character;
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styleSheet.cssRules.push(importRule);
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buffer = "";
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state = "before-selector";
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break;
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default:
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buffer += character;
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break;
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}
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break;
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case "}":
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switch (state) {
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case "value":
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styleRule.style.setProperty(name, buffer.trim(), priority);
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priority = "";
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/* falls through */
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case "before-name":
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case "name":
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styleRule.__ends = i + 1;
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if (parentRule) {
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styleRule.parentRule = parentRule;
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}
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styleRule.parentStyleSheet = styleSheet;
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currentScope.cssRules.push(styleRule);
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buffer = "";
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if (currentScope.constructor === CSSOM.CSSKeyframesRule) {
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state = "keyframeRule-begin";
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} else {
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state = "before-selector";
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}
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break;
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case "keyframeRule-begin":
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case "before-selector":
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case "selector":
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// End of media/supports/document rule.
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if (!parentRule) {
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parseError("Unexpected }");
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}
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// Handle rules nested in @media or @supports
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hasAncestors = ancestorRules.length > 0;
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while (ancestorRules.length > 0) {
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parentRule = ancestorRules.pop();
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if (
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parentRule.constructor.name === "CSSMediaRule"
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|| parentRule.constructor.name === "CSSSupportsRule"
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) {
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prevScope = currentScope;
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currentScope = parentRule;
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currentScope.cssRules.push(prevScope);
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break;
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}
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if (ancestorRules.length === 0) {
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hasAncestors = false;
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}
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}
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if (!hasAncestors) {
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currentScope.__ends = i + 1;
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styleSheet.cssRules.push(currentScope);
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currentScope = styleSheet;
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parentRule = null;
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}
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buffer = "";
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state = "before-selector";
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break;
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}
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break;
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default:
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switch (state) {
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case "before-selector":
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state = "selector";
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styleRule = new CSSOM.CSSStyleRule();
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styleRule.__starts = i;
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break;
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case "before-name":
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state = "name";
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break;
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case "before-value":
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state = "value";
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break;
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case "importRule-begin":
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state = "importRule";
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break;
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}
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buffer += character;
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break;
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}
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}
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return styleSheet;
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};
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//.CommonJS
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exports.parse = CSSOM.parse;
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// The following modules cannot be included sooner due to the mutual dependency with parse.js
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CSSOM.CSSStyleSheet = require("./CSSStyleSheet").CSSStyleSheet;
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CSSOM.CSSStyleRule = require("./CSSStyleRule").CSSStyleRule;
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CSSOM.CSSImportRule = require("./CSSImportRule").CSSImportRule;
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CSSOM.CSSMediaRule = require("./CSSMediaRule").CSSMediaRule;
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CSSOM.CSSSupportsRule = require("./CSSSupportsRule").CSSSupportsRule;
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CSSOM.CSSFontFaceRule = require("./CSSFontFaceRule").CSSFontFaceRule;
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CSSOM.CSSHostRule = require("./CSSHostRule").CSSHostRule;
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CSSOM.CSSStyleDeclaration = require('./CSSStyleDeclaration').CSSStyleDeclaration;
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CSSOM.CSSKeyframeRule = require('./CSSKeyframeRule').CSSKeyframeRule;
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CSSOM.CSSKeyframesRule = require('./CSSKeyframesRule').CSSKeyframesRule;
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CSSOM.CSSValueExpression = require('./CSSValueExpression').CSSValueExpression;
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CSSOM.CSSDocumentRule = require('./CSSDocumentRule').CSSDocumentRule;
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///CommonJS
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