| 1 | //.CommonJS
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| 2 | var CSSOM = {};
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| 3 | ///CommonJS
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| 4 |
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| 5 |
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| 6 | /**
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| 7 | * @param {string} token
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| 8 | */
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| 9 | CSSOM.parse = function parse(token) {
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| 10 |
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| 11 | var i = 0;
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| 12 |
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| 13 | /**
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| 14 | "before-selector" or
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| 15 | "selector" or
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| 16 | "atRule" or
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| 17 | "atBlock" or
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| 18 | "conditionBlock" or
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| 19 | "before-name" or
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| 20 | "name" or
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| 21 | "before-value" or
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| 22 | "value"
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| 23 | */
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| 24 | var state = "before-selector";
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| 25 |
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| 26 | var index;
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| 27 | var buffer = "";
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| 28 | var valueParenthesisDepth = 0;
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| 29 |
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| 30 | var SIGNIFICANT_WHITESPACE = {
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| 31 | "selector": true,
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| 32 | "value": true,
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| 33 | "value-parenthesis": true,
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| 34 | "atRule": true,
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| 35 | "importRule-begin": true,
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| 36 | "importRule": true,
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| 37 | "atBlock": true,
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| 38 | "conditionBlock": true,
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| 39 | 'documentRule-begin': true
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| 40 | };
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| 41 |
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| 42 | var styleSheet = new CSSOM.CSSStyleSheet();
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| 43 |
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| 44 | // @type CSSStyleSheet|CSSMediaRule|CSSSupportsRule|CSSFontFaceRule|CSSKeyframesRule|CSSDocumentRule
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| 45 | var currentScope = styleSheet;
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| 46 |
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| 47 | // @type CSSMediaRule|CSSSupportsRule|CSSKeyframesRule|CSSDocumentRule
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| 48 | var parentRule;
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| 49 |
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| 50 | var ancestorRules = [];
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| 51 | var hasAncestors = false;
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| 52 | var prevScope;
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| 53 |
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| 54 | var name, priority="", styleRule, mediaRule, supportsRule, importRule, fontFaceRule, keyframesRule, documentRule, hostRule;
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| 55 |
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| 56 | var atKeyframesRegExp = /@(-(?:\w+-)+)?keyframes/g;
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| 57 |
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| 58 | var parseError = function(message) {
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| 59 | var lines = token.substring(0, i).split('\n');
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| 60 | var lineCount = lines.length;
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| 61 | var charCount = lines.pop().length + 1;
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| 62 | var error = new Error(message + ' (line ' + lineCount + ', char ' + charCount + ')');
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| 63 | error.line = lineCount;
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| 64 | /* jshint sub : true */
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| 65 | error['char'] = charCount;
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| 66 | error.styleSheet = styleSheet;
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| 67 | throw error;
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| 68 | };
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| 69 |
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| 70 | for (var character; (character = token.charAt(i)); i++) {
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| 71 |
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| 72 | switch (character) {
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| 73 |
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| 74 | case " ":
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| 75 | case "\t":
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| 76 | case "\r":
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| 77 | case "\n":
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| 78 | case "\f":
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| 79 | if (SIGNIFICANT_WHITESPACE[state]) {
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| 80 | buffer += character;
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| 81 | }
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| 82 | break;
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| 83 |
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| 84 | // String
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| 85 | case '"':
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| 86 | index = i + 1;
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| 87 | do {
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| 88 | index = token.indexOf('"', index) + 1;
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| 89 | if (!index) {
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| 90 | parseError('Unmatched "');
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| 91 | }
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| 92 | } while (token[index - 2] === '\\');
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| 93 | buffer += token.slice(i, index);
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| 94 | i = index - 1;
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| 95 | switch (state) {
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| 96 | case 'before-value':
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| 97 | state = 'value';
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| 98 | break;
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| 99 | case 'importRule-begin':
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| 100 | state = 'importRule';
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| 101 | break;
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| 102 | }
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| 103 | break;
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| 104 |
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| 105 | case "'":
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| 106 | index = i + 1;
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| 107 | do {
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| 108 | index = token.indexOf("'", index) + 1;
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| 109 | if (!index) {
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| 110 | parseError("Unmatched '");
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| 111 | }
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| 112 | } while (token[index - 2] === '\\');
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| 113 | buffer += token.slice(i, index);
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| 114 | i = index - 1;
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| 115 | switch (state) {
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| 116 | case 'before-value':
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| 117 | state = 'value';
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| 118 | break;
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| 119 | case 'importRule-begin':
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| 120 | state = 'importRule';
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| 121 | break;
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| 122 | }
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| 123 | break;
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| 124 |
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| 125 | // Comment
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| 126 | case "/":
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| 127 | if (token.charAt(i + 1) === "*") {
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| 128 | i += 2;
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| 129 | index = token.indexOf("*/", i);
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| 130 | if (index === -1) {
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| 131 | parseError("Missing */");
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| 132 | } else {
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| 133 | i = index + 1;
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| 134 | }
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| 135 | } else {
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| 136 | buffer += character;
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| 137 | }
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| 138 | if (state === "importRule-begin") {
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| 139 | buffer += " ";
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| 140 | state = "importRule";
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| 141 | }
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| 142 | break;
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| 143 |
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| 144 | // At-rule
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| 145 | case "@":
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| 146 | if (token.indexOf("@-moz-document", i) === i) {
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| 147 | state = "documentRule-begin";
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| 148 | documentRule = new CSSOM.CSSDocumentRule();
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| 149 | documentRule.__starts = i;
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| 150 | i += "-moz-document".length;
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| 151 | buffer = "";
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| 152 | break;
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| 153 | } else if (token.indexOf("@media", i) === i) {
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| 154 | state = "atBlock";
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| 155 | mediaRule = new CSSOM.CSSMediaRule();
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| 156 | mediaRule.__starts = i;
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| 157 | i += "media".length;
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| 158 | buffer = "";
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| 159 | break;
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| 160 | } else if (token.indexOf("@supports", i) === i) {
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| 161 | state = "conditionBlock";
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| 162 | supportsRule = new CSSOM.CSSSupportsRule();
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| 163 | supportsRule.__starts = i;
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| 164 | i += "supports".length;
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| 165 | buffer = "";
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| 166 | break;
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| 167 | } else if (token.indexOf("@host", i) === i) {
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| 168 | state = "hostRule-begin";
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| 169 | i += "host".length;
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| 170 | hostRule = new CSSOM.CSSHostRule();
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| 171 | hostRule.__starts = i;
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| 172 | buffer = "";
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| 173 | break;
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| 174 | } else if (token.indexOf("@import", i) === i) {
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| 175 | state = "importRule-begin";
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| 176 | i += "import".length;
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| 177 | buffer += "@import";
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| 178 | break;
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| 179 | } else if (token.indexOf("@font-face", i) === i) {
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| 180 | state = "fontFaceRule-begin";
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| 181 | i += "font-face".length;
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| 182 | fontFaceRule = new CSSOM.CSSFontFaceRule();
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| 183 | fontFaceRule.__starts = i;
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| 184 | buffer = "";
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| 185 | break;
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| 186 | } else {
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| 187 | atKeyframesRegExp.lastIndex = i;
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| 188 | var matchKeyframes = atKeyframesRegExp.exec(token);
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| 189 | if (matchKeyframes && matchKeyframes.index === i) {
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| 190 | state = "keyframesRule-begin";
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| 191 | keyframesRule = new CSSOM.CSSKeyframesRule();
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| 192 | keyframesRule.__starts = i;
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| 193 | keyframesRule._vendorPrefix = matchKeyframes[1]; // Will come out as undefined if no prefix was found
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| 194 | i += matchKeyframes[0].length - 1;
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| 195 | buffer = "";
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| 196 | break;
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| 197 | } else if (state === "selector") {
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| 198 | state = "atRule";
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| 199 | }
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| 200 | }
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| 201 | buffer += character;
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| 202 | break;
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| 203 |
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| 204 | case "{":
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| 205 | if (state === "selector" || state === "atRule") {
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| 206 | styleRule.selectorText = buffer.trim();
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| 207 | styleRule.style.__starts = i;
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| 208 | buffer = "";
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| 209 | state = "before-name";
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| 210 | } else if (state === "atBlock") {
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| 211 | mediaRule.media.mediaText = buffer.trim();
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| 212 |
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| 213 | if (parentRule) {
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| 214 | ancestorRules.push(parentRule);
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| 215 | }
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| 216 |
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| 217 | currentScope = parentRule = mediaRule;
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| 218 | mediaRule.parentStyleSheet = styleSheet;
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| 219 | buffer = "";
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| 220 | state = "before-selector";
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| 221 | } else if (state === "conditionBlock") {
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| 222 | supportsRule.conditionText = buffer.trim();
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| 223 |
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| 224 | if (parentRule) {
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| 225 | ancestorRules.push(parentRule);
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| 226 | }
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| 227 |
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| 228 | currentScope = parentRule = supportsRule;
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| 229 | supportsRule.parentStyleSheet = styleSheet;
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| 230 | buffer = "";
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| 231 | state = "before-selector";
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| 232 | } else if (state === "hostRule-begin") {
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| 233 | if (parentRule) {
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| 234 | ancestorRules.push(parentRule);
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| 235 | }
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| 236 |
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| 237 | currentScope = parentRule = hostRule;
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| 238 | hostRule.parentStyleSheet = styleSheet;
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| 239 | buffer = "";
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| 240 | state = "before-selector";
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| 241 | } else if (state === "fontFaceRule-begin") {
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| 242 | if (parentRule) {
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| 243 | fontFaceRule.parentRule = parentRule;
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| 244 | }
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| 245 | fontFaceRule.parentStyleSheet = styleSheet;
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| 246 | styleRule = fontFaceRule;
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| 247 | buffer = "";
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| 248 | state = "before-name";
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| 249 | } else if (state === "keyframesRule-begin") {
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| 250 | keyframesRule.name = buffer.trim();
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| 251 | if (parentRule) {
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| 252 | ancestorRules.push(parentRule);
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| 253 | keyframesRule.parentRule = parentRule;
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| 254 | }
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| 255 | keyframesRule.parentStyleSheet = styleSheet;
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| 256 | currentScope = parentRule = keyframesRule;
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| 257 | buffer = "";
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| 258 | state = "keyframeRule-begin";
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| 259 | } else if (state === "keyframeRule-begin") {
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| 260 | styleRule = new CSSOM.CSSKeyframeRule();
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| 261 | styleRule.keyText = buffer.trim();
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| 262 | styleRule.__starts = i;
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| 263 | buffer = "";
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| 264 | state = "before-name";
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| 265 | } else if (state === "documentRule-begin") {
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| 266 | // FIXME: what if this '{' is in the url text of the match function?
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| 267 | documentRule.matcher.matcherText = buffer.trim();
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| 268 | if (parentRule) {
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| 269 | ancestorRules.push(parentRule);
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| 270 | documentRule.parentRule = parentRule;
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| 271 | }
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| 272 | currentScope = parentRule = documentRule;
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| 273 | documentRule.parentStyleSheet = styleSheet;
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| 274 | buffer = "";
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| 275 | state = "before-selector";
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| 276 | }
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| 277 | break;
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| 278 |
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| 279 | case ":":
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| 280 | if (state === "name") {
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| 281 | name = buffer.trim();
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| 282 | buffer = "";
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| 283 | state = "before-value";
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| 284 | } else {
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| 285 | buffer += character;
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| 286 | }
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| 287 | break;
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| 288 |
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| 289 | case "(":
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| 290 | if (state === 'value') {
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| 291 | // ie css expression mode
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| 292 | if (buffer.trim() === 'expression') {
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| 293 | var info = (new CSSOM.CSSValueExpression(token, i)).parse();
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| 294 |
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| 295 | if (info.error) {
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| 296 | parseError(info.error);
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| 297 | } else {
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| 298 | buffer += info.expression;
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| 299 | i = info.idx;
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| 300 | }
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| 301 | } else {
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| 302 | state = 'value-parenthesis';
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| 303 | //always ensure this is reset to 1 on transition
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| 304 | //from value to value-parenthesis
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| 305 | valueParenthesisDepth = 1;
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| 306 | buffer += character;
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| 307 | }
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| 308 | } else if (state === 'value-parenthesis') {
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| 309 | valueParenthesisDepth++;
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| 310 | buffer += character;
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| 311 | } else {
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| 312 | buffer += character;
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| 313 | }
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| 314 | break;
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| 315 |
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| 316 | case ")":
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| 317 | if (state === 'value-parenthesis') {
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| 318 | valueParenthesisDepth--;
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| 319 | if (valueParenthesisDepth === 0) state = 'value';
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| 320 | }
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| 321 | buffer += character;
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| 322 | break;
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| 323 |
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| 324 | case "!":
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| 325 | if (state === "value" && token.indexOf("!important", i) === i) {
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| 326 | priority = "important";
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| 327 | i += "important".length;
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| 328 | } else {
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| 329 | buffer += character;
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| 330 | }
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| 331 | break;
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| 332 |
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| 333 | case ";":
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| 334 | switch (state) {
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| 335 | case "value":
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| 336 | styleRule.style.setProperty(name, buffer.trim(), priority);
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| 337 | priority = "";
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| 338 | buffer = "";
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| 339 | state = "before-name";
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| 340 | break;
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| 341 | case "atRule":
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| 342 | buffer = "";
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| 343 | state = "before-selector";
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| 344 | break;
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| 345 | case "importRule":
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| 346 | importRule = new CSSOM.CSSImportRule();
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| 347 | importRule.parentStyleSheet = importRule.styleSheet.parentStyleSheet = styleSheet;
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| 348 | importRule.cssText = buffer + character;
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| 349 | styleSheet.cssRules.push(importRule);
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| 350 | buffer = "";
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| 351 | state = "before-selector";
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| 352 | break;
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| 353 | default:
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| 354 | buffer += character;
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| 355 | break;
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| 356 | }
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| 357 | break;
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| 358 |
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| 359 | case "}":
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| 360 | switch (state) {
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| 361 | case "value":
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| 362 | styleRule.style.setProperty(name, buffer.trim(), priority);
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| 363 | priority = "";
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| 364 | /* falls through */
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| 365 | case "before-name":
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| 366 | case "name":
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| 367 | styleRule.__ends = i + 1;
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| 368 | if (parentRule) {
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| 369 | styleRule.parentRule = parentRule;
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| 370 | }
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| 371 | styleRule.parentStyleSheet = styleSheet;
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| 372 | currentScope.cssRules.push(styleRule);
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| 373 | buffer = "";
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| 374 | if (currentScope.constructor === CSSOM.CSSKeyframesRule) {
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| 375 | state = "keyframeRule-begin";
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| 376 | } else {
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| 377 | state = "before-selector";
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| 378 | }
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| 379 | break;
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| 380 | case "keyframeRule-begin":
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| 381 | case "before-selector":
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| 382 | case "selector":
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| 383 | // End of media/supports/document rule.
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| 384 | if (!parentRule) {
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| 385 | parseError("Unexpected }");
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| 386 | }
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| 387 |
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| 388 | // Handle rules nested in @media or @supports
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| 389 | hasAncestors = ancestorRules.length > 0;
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| 390 |
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| 391 | while (ancestorRules.length > 0) {
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| 392 | parentRule = ancestorRules.pop();
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| 393 |
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| 394 | if (
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| 395 | parentRule.constructor.name === "CSSMediaRule"
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| 396 | || parentRule.constructor.name === "CSSSupportsRule"
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| 397 | ) {
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| 398 | prevScope = currentScope;
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| 399 | currentScope = parentRule;
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| 400 | currentScope.cssRules.push(prevScope);
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| 401 | break;
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| 402 | }
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| 403 |
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| 404 | if (ancestorRules.length === 0) {
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| 405 | hasAncestors = false;
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| 406 | }
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| 407 | }
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| 408 |
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| 409 | if (!hasAncestors) {
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| 410 | currentScope.__ends = i + 1;
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| 411 | styleSheet.cssRules.push(currentScope);
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| 412 | currentScope = styleSheet;
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| 413 | parentRule = null;
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| 414 | }
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| 415 |
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| 416 | buffer = "";
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| 417 | state = "before-selector";
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| 418 | break;
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| 419 | }
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| 420 | break;
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| 421 |
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| 422 | default:
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| 423 | switch (state) {
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| 424 | case "before-selector":
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| 425 | state = "selector";
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| 426 | styleRule = new CSSOM.CSSStyleRule();
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| 427 | styleRule.__starts = i;
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| 428 | break;
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| 429 | case "before-name":
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| 430 | state = "name";
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| 431 | break;
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| 432 | case "before-value":
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| 433 | state = "value";
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| 434 | break;
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| 435 | case "importRule-begin":
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| 436 | state = "importRule";
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| 437 | break;
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| 438 | }
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| 439 | buffer += character;
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| 440 | break;
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| 441 | }
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| 442 | }
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| 443 |
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| 444 | return styleSheet;
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| 445 | };
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| 446 |
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| 447 |
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| 448 | //.CommonJS
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| 449 | exports.parse = CSSOM.parse;
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| 450 | // The following modules cannot be included sooner due to the mutual dependency with parse.js
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| 451 | CSSOM.CSSStyleSheet = require("./CSSStyleSheet").CSSStyleSheet;
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| 452 | CSSOM.CSSStyleRule = require("./CSSStyleRule").CSSStyleRule;
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| 453 | CSSOM.CSSImportRule = require("./CSSImportRule").CSSImportRule;
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| 454 | CSSOM.CSSMediaRule = require("./CSSMediaRule").CSSMediaRule;
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| 455 | CSSOM.CSSSupportsRule = require("./CSSSupportsRule").CSSSupportsRule;
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| 456 | CSSOM.CSSFontFaceRule = require("./CSSFontFaceRule").CSSFontFaceRule;
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| 457 | CSSOM.CSSHostRule = require("./CSSHostRule").CSSHostRule;
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| 458 | CSSOM.CSSStyleDeclaration = require('./CSSStyleDeclaration').CSSStyleDeclaration;
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| 459 | CSSOM.CSSKeyframeRule = require('./CSSKeyframeRule').CSSKeyframeRule;
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| 460 | CSSOM.CSSKeyframesRule = require('./CSSKeyframesRule').CSSKeyframesRule;
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| 461 | CSSOM.CSSValueExpression = require('./CSSValueExpression').CSSValueExpression;
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| 462 | CSSOM.CSSDocumentRule = require('./CSSDocumentRule').CSSDocumentRule;
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| 463 | ///CommonJS
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