| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | var utils_1 = require("./utils");
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| 4 | function parseCssSelector(str, pos, pseudos, attrEqualityMods, ruleNestingOperators, substitutesEnabled) {
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| 5 | var l = str.length;
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| 6 | var chr = '';
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| 7 | function getStr(quote, escapeTable) {
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| 8 | var result = '';
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| 9 | pos++;
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| 10 | chr = str.charAt(pos);
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| 11 | while (pos < l) {
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| 12 | if (chr === quote) {
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| 13 | pos++;
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| 14 | return result;
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| 15 | }
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| 16 | else if (chr === '\\') {
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| 17 | pos++;
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| 18 | chr = str.charAt(pos);
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| 19 | var esc = void 0;
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| 20 | if (chr === quote) {
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| 21 | result += quote;
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| 22 | }
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| 23 | else if ((esc = escapeTable[chr]) !== undefined) {
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| 24 | result += esc;
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| 25 | }
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| 26 | else if (utils_1.isHex(chr)) {
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| 27 | var hex = chr;
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| 28 | pos++;
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| 29 | chr = str.charAt(pos);
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| 30 | while (utils_1.isHex(chr)) {
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| 31 | hex += chr;
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| 32 | pos++;
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| 33 | chr = str.charAt(pos);
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| 34 | }
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| 35 | if (chr === ' ') {
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| 36 | pos++;
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| 37 | chr = str.charAt(pos);
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| 38 | }
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| 39 | result += String.fromCharCode(parseInt(hex, 16));
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| 40 | continue;
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| 41 | }
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| 42 | else {
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| 43 | result += chr;
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| 44 | }
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| 45 | }
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| 46 | else {
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| 47 | result += chr;
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| 48 | }
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| 49 | pos++;
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| 50 | chr = str.charAt(pos);
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| 51 | }
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| 52 | return result;
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| 53 | }
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| 54 | function getIdent() {
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| 55 | var result = '';
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| 56 | chr = str.charAt(pos);
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| 57 | while (pos < l) {
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| 58 | if (utils_1.isIdent(chr)) {
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| 59 | result += chr;
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| 60 | }
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| 61 | else if (chr === '\\') {
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| 62 | pos++;
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| 63 | if (pos >= l) {
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| 64 | throw Error('Expected symbol but end of file reached.');
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| 65 | }
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| 66 | chr = str.charAt(pos);
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| 67 | if (utils_1.identSpecialChars[chr]) {
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| 68 | result += chr;
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| 69 | }
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| 70 | else if (utils_1.isHex(chr)) {
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| 71 | var hex = chr;
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| 72 | pos++;
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| 73 | chr = str.charAt(pos);
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| 74 | while (utils_1.isHex(chr)) {
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| 75 | hex += chr;
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| 76 | pos++;
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| 77 | chr = str.charAt(pos);
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| 78 | }
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| 79 | if (chr === ' ') {
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| 80 | pos++;
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| 81 | chr = str.charAt(pos);
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| 82 | }
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| 83 | result += String.fromCharCode(parseInt(hex, 16));
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| 84 | continue;
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| 85 | }
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| 86 | else {
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| 87 | result += chr;
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| 88 | }
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| 89 | }
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| 90 | else {
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| 91 | return result;
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| 92 | }
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| 93 | pos++;
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| 94 | chr = str.charAt(pos);
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| 95 | }
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| 96 | return result;
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| 97 | }
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| 98 | function skipWhitespace() {
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| 99 | chr = str.charAt(pos);
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| 100 | var result = false;
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| 101 | while (chr === ' ' || chr === "\t" || chr === "\n" || chr === "\r" || chr === "\f") {
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| 102 | result = true;
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| 103 | pos++;
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| 104 | chr = str.charAt(pos);
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| 105 | }
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| 106 | return result;
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| 107 | }
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| 108 | function parse() {
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| 109 | var res = parseSelector();
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| 110 | if (pos < l) {
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| 111 | throw Error('Rule expected but "' + str.charAt(pos) + '" found.');
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| 112 | }
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| 113 | return res;
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| 114 | }
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| 115 | function parseSelector() {
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| 116 | var selector = parseSingleSelector();
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| 117 | if (!selector) {
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| 118 | return null;
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| 119 | }
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| 120 | var res = selector;
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| 121 | chr = str.charAt(pos);
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| 122 | while (chr === ',') {
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| 123 | pos++;
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| 124 | skipWhitespace();
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| 125 | if (res.type !== 'selectors') {
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| 126 | res = {
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| 127 | type: 'selectors',
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| 128 | selectors: [selector]
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| 129 | };
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| 130 | }
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| 131 | selector = parseSingleSelector();
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| 132 | if (!selector) {
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| 133 | throw Error('Rule expected after ",".');
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| 134 | }
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| 135 | res.selectors.push(selector);
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| 136 | }
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| 137 | return res;
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| 138 | }
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| 139 | function parseSingleSelector() {
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| 140 | skipWhitespace();
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| 141 | var selector = {
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| 142 | type: 'ruleSet'
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| 143 | };
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| 144 | var rule = parseRule();
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| 145 | if (!rule) {
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| 146 | return null;
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| 147 | }
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| 148 | var currentRule = selector;
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| 149 | while (rule) {
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| 150 | rule.type = 'rule';
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| 151 | currentRule.rule = rule;
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| 152 | currentRule = rule;
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| 153 | skipWhitespace();
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| 154 | chr = str.charAt(pos);
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| 155 | if (pos >= l || chr === ',' || chr === ')') {
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| 156 | break;
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| 157 | }
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| 158 | if (ruleNestingOperators[chr]) {
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| 159 | var op = chr;
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| 160 | pos++;
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| 161 | skipWhitespace();
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| 162 | rule = parseRule();
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| 163 | if (!rule) {
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| 164 | throw Error('Rule expected after "' + op + '".');
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| 165 | }
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| 166 | rule.nestingOperator = op;
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| 167 | }
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| 168 | else {
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| 169 | rule = parseRule();
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| 170 | if (rule) {
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| 171 | rule.nestingOperator = null;
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| 172 | }
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| 173 | }
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| 174 | }
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| 175 | return selector;
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| 176 | }
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| 177 |
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| 178 | function parseRule() {
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| 179 | var rule = null;
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| 180 | while (pos < l) {
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| 181 | chr = str.charAt(pos);
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| 182 | if (chr === '*') {
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| 183 | pos++;
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| 184 | (rule = rule || {}).tagName = '*';
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| 185 | }
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| 186 | else if (utils_1.isIdentStart(chr) || chr === '\\') {
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| 187 | (rule = rule || {}).tagName = getIdent();
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| 188 | }
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| 189 | else if (chr === '.') {
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| 190 | pos++;
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| 191 | rule = rule || {};
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| 192 | (rule.classNames = rule.classNames || []).push(getIdent());
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| 193 | }
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| 194 | else if (chr === '#') {
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| 195 | pos++;
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| 196 | (rule = rule || {}).id = getIdent();
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| 197 | }
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| 198 | else if (chr === '[') {
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| 199 | pos++;
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| 200 | skipWhitespace();
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| 201 | var attr = {
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| 202 | name: getIdent()
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| 203 | };
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| 204 | skipWhitespace();
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| 205 |
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| 206 | if (chr === ']') {
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| 207 | pos++;
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| 208 | }
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| 209 | else {
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| 210 | var operator = '';
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| 211 | if (attrEqualityMods[chr]) {
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| 212 | operator = chr;
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| 213 | pos++;
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| 214 | chr = str.charAt(pos);
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| 215 | }
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| 216 | if (pos >= l) {
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| 217 | throw Error('Expected "=" but end of file reached.');
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| 218 | }
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| 219 | if (chr !== '=') {
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| 220 | throw Error('Expected "=" but "' + chr + '" found.');
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| 221 | }
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| 222 | attr.operator = operator + '=';
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| 223 | pos++;
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| 224 | skipWhitespace();
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| 225 | var attrValue = '';
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| 226 | attr.valueType = 'string';
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| 227 |
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| 228 | if (chr === '"') {
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| 229 | attrValue = getStr('"', utils_1.doubleQuotesEscapeChars);
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| 230 |
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| 231 | }
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| 232 | else if (chr === '\'') {
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| 233 | attrValue = getStr('\'', utils_1.singleQuoteEscapeChars);
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| 234 |
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| 235 | }
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| 236 | else if (substitutesEnabled && chr === '$') {
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| 237 | pos++;
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| 238 | attrValue = getIdent();
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| 239 | attr.valueType = 'substitute';
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| 240 | }
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| 241 | else {
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| 242 | while (pos < l) {
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| 243 | if (chr === ']') {
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| 244 | break;
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| 245 | }
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| 246 | attrValue += chr;
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| 247 | pos++;
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| 248 | chr = str.charAt(pos);
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| 249 | }
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| 250 | attrValue = attrValue.trim();
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| 251 | }
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| 252 | skipWhitespace();
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| 253 | if (pos >= l) {
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| 254 | throw Error('Expected "]" but end of file reached.');
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| 255 | }
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| 256 | if (chr !== ']') {
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| 257 | throw Error('Expected "]" but "' + chr + '" found.');
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| 258 | }
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| 259 | pos++;
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| 260 | attr.value = attrValue;
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| 261 | }
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| 262 | rule = rule || {};
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| 263 | (rule.attrs = rule.attrs || []).push(attr);
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| 264 | }
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| 265 | else if (chr === ':') {
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| 266 | pos++;
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| 267 | var pseudoName = getIdent();
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| 268 | var pseudo = {
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| 269 | name: pseudoName
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| 270 | };
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| 271 |
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| 272 | if (chr === '(') {
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| 273 | pos++;
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| 274 | var value = '';
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| 275 | skipWhitespace();
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| 276 | if (pseudos[pseudoName] === 'selector') {
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| 277 | pseudo.valueType = 'selector';
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| 278 | value = parseSelector();
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| 279 | }
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| 280 | else {
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| 281 | pseudo.valueType = pseudos[pseudoName] || 'string';
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| 282 |
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| 283 | if (chr === '"') {
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| 284 | value = getStr('"', utils_1.doubleQuotesEscapeChars);
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| 285 |
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| 286 | }
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| 287 | else if (chr === '\'') {
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| 288 | value = getStr('\'', utils_1.singleQuoteEscapeChars);
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| 289 |
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| 290 | }
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| 291 | else if (substitutesEnabled && chr === '$') {
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| 292 | pos++;
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| 293 | value = getIdent();
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| 294 | pseudo.valueType = 'substitute';
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| 295 | }
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| 296 | else {
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| 297 | while (pos < l) {
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| 298 | if (chr === ')') {
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| 299 | break;
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| 300 | }
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| 301 | value += chr;
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| 302 | pos++;
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| 303 | chr = str.charAt(pos);
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| 304 | }
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| 305 | value = value.trim();
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| 306 | }
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| 307 | skipWhitespace();
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| 308 | }
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| 309 | if (pos >= l) {
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| 310 | throw Error('Expected ")" but end of file reached.');
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| 311 | }
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| 312 | if (chr !== ')') {
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| 313 | throw Error('Expected ")" but "' + chr + '" found.');
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| 314 | }
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| 315 | pos++;
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| 316 | pseudo.value = value;
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| 317 | }
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| 318 | rule = rule || {};
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| 319 | (rule.pseudos = rule.pseudos || []).push(pseudo);
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| 320 | }
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| 321 | else {
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| 322 | break;
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| 323 | }
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| 324 | }
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| 325 | return rule;
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| 326 | }
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| 327 | return parse();
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| 328 | }
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| 329 | exports.parseCssSelector = parseCssSelector;
|