| 1 | "use strict";
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| 2 | var openParentheses = "(".charCodeAt(0);
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| 3 | var closeParentheses = ")".charCodeAt(0);
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| 4 | var singleQuote = "'".charCodeAt(0);
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| 5 | var doubleQuote = '"'.charCodeAt(0);
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| 6 | var backslash = "\\".charCodeAt(0);
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| 7 | var slash = "/".charCodeAt(0);
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| 8 | var comma = ",".charCodeAt(0);
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| 9 | var colon = ":".charCodeAt(0);
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| 10 | var star = "*".charCodeAt(0);
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| 11 | var uLower = "u".charCodeAt(0);
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| 12 | var uUpper = "U".charCodeAt(0);
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| 13 | var plus = "+".charCodeAt(0);
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| 14 | var isUnicodeRange = /^[a-f0-9?-]+$/i;
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| 15 | module.exports = function(input) {
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| 16 | var tokens = [];
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| 17 | var value = input;
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| 18 | var next, quote, prev, token, escape, escapePos, whitespacePos, parenthesesOpenPos;
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| 19 | var pos = 0;
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| 20 | var code = value.charCodeAt(pos);
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| 21 | var max = value.length;
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| 22 | var stack = [
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| 23 | {
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| 24 | nodes: tokens
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| 25 | }
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| 26 | ];
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| 27 | var balanced = 0;
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| 28 | var parent;
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| 29 | var name = "";
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| 30 | var before = "";
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| 31 | var after = "";
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| 32 | while(pos < max){
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| 33 | // Whitespaces
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| 34 | if (code <= 32) {
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| 35 | next = pos;
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| 36 | do {
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| 37 | next += 1;
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| 38 | code = value.charCodeAt(next);
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| 39 | }while (code <= 32);
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| 40 | token = value.slice(pos, next);
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| 41 | prev = tokens[tokens.length - 1];
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| 42 | if (code === closeParentheses && balanced) {
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| 43 | after = token;
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| 44 | } else if (prev && prev.type === "div") {
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| 45 | prev.after = token;
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| 46 | prev.sourceEndIndex += token.length;
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| 47 | } else if (code === comma || code === colon || code === slash && value.charCodeAt(next + 1) !== star && (!parent || parent && parent.type === "function" && false)) {
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| 48 | before = token;
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| 49 | } else {
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| 50 | tokens.push({
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| 51 | type: "space",
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| 52 | sourceIndex: pos,
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| 53 | sourceEndIndex: next,
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| 54 | value: token
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| 55 | });
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| 56 | }
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| 57 | pos = next;
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| 58 | // Quotes
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| 59 | } else if (code === singleQuote || code === doubleQuote) {
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| 60 | next = pos;
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| 61 | quote = code === singleQuote ? "'" : '"';
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| 62 | token = {
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| 63 | type: "string",
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| 64 | sourceIndex: pos,
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| 65 | quote: quote
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| 66 | };
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| 67 | do {
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| 68 | escape = false;
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| 69 | next = value.indexOf(quote, next + 1);
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| 70 | if (~next) {
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| 71 | escapePos = next;
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| 72 | while(value.charCodeAt(escapePos - 1) === backslash){
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| 73 | escapePos -= 1;
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| 74 | escape = !escape;
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| 75 | }
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| 76 | } else {
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| 77 | value += quote;
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| 78 | next = value.length - 1;
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| 79 | token.unclosed = true;
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| 80 | }
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| 81 | }while (escape);
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| 82 | token.value = value.slice(pos + 1, next);
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| 83 | token.sourceEndIndex = token.unclosed ? next : next + 1;
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| 84 | tokens.push(token);
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| 85 | pos = next + 1;
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| 86 | code = value.charCodeAt(pos);
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| 87 | // Comments
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| 88 | } else if (code === slash && value.charCodeAt(pos + 1) === star) {
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| 89 | next = value.indexOf("*/", pos);
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| 90 | token = {
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| 91 | type: "comment",
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| 92 | sourceIndex: pos,
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| 93 | sourceEndIndex: next + 2
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| 94 | };
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| 95 | if (next === -1) {
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| 96 | token.unclosed = true;
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| 97 | next = value.length;
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| 98 | token.sourceEndIndex = next;
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| 99 | }
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| 100 | token.value = value.slice(pos + 2, next);
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| 101 | tokens.push(token);
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| 102 | pos = next + 2;
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| 103 | code = value.charCodeAt(pos);
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| 104 | // Operation within calc
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| 105 | } else if ((code === slash || code === star) && parent && parent.type === "function" && true) {
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| 106 | token = value[pos];
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| 107 | tokens.push({
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| 108 | type: "word",
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| 109 | sourceIndex: pos - before.length,
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| 110 | sourceEndIndex: pos + token.length,
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| 111 | value: token
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| 112 | });
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| 113 | pos += 1;
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| 114 | code = value.charCodeAt(pos);
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| 115 | // Dividers
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| 116 | } else if (code === slash || code === comma || code === colon) {
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| 117 | token = value[pos];
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| 118 | tokens.push({
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| 119 | type: "div",
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| 120 | sourceIndex: pos - before.length,
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| 121 | sourceEndIndex: pos + token.length,
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| 122 | value: token,
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| 123 | before: before,
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| 124 | after: ""
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| 125 | });
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| 126 | before = "";
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| 127 | pos += 1;
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| 128 | code = value.charCodeAt(pos);
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| 129 | // Open parentheses
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| 130 | } else if (openParentheses === code) {
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| 131 | // Whitespaces after open parentheses
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| 132 | next = pos;
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| 133 | do {
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| 134 | next += 1;
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| 135 | code = value.charCodeAt(next);
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| 136 | }while (code <= 32);
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| 137 | parenthesesOpenPos = pos;
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| 138 | token = {
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| 139 | type: "function",
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| 140 | sourceIndex: pos - name.length,
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| 141 | value: name,
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| 142 | before: value.slice(parenthesesOpenPos + 1, next)
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| 143 | };
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| 144 | pos = next;
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| 145 | if (name === "url" && code !== singleQuote && code !== doubleQuote) {
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| 146 | next -= 1;
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| 147 | do {
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| 148 | escape = false;
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| 149 | next = value.indexOf(")", next + 1);
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| 150 | if (~next) {
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| 151 | escapePos = next;
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| 152 | while(value.charCodeAt(escapePos - 1) === backslash){
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| 153 | escapePos -= 1;
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| 154 | escape = !escape;
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| 155 | }
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| 156 | } else {
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| 157 | value += ")";
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| 158 | next = value.length - 1;
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| 159 | token.unclosed = true;
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| 160 | }
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| 161 | }while (escape);
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| 162 | // Whitespaces before closed
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| 163 | whitespacePos = next;
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| 164 | do {
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| 165 | whitespacePos -= 1;
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| 166 | code = value.charCodeAt(whitespacePos);
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| 167 | }while (code <= 32);
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| 168 | if (parenthesesOpenPos < whitespacePos) {
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| 169 | if (pos !== whitespacePos + 1) {
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| 170 | token.nodes = [
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| 171 | {
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| 172 | type: "word",
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| 173 | sourceIndex: pos,
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| 174 | sourceEndIndex: whitespacePos + 1,
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| 175 | value: value.slice(pos, whitespacePos + 1)
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| 176 | }
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| 177 | ];
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| 178 | } else {
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| 179 | token.nodes = [];
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| 180 | }
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| 181 | if (token.unclosed && whitespacePos + 1 !== next) {
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| 182 | token.after = "";
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| 183 | token.nodes.push({
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| 184 | type: "space",
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| 185 | sourceIndex: whitespacePos + 1,
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| 186 | sourceEndIndex: next,
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| 187 | value: value.slice(whitespacePos + 1, next)
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| 188 | });
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| 189 | } else {
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| 190 | token.after = value.slice(whitespacePos + 1, next);
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| 191 | token.sourceEndIndex = next;
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| 192 | }
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| 193 | } else {
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| 194 | token.after = "";
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| 195 | token.nodes = [];
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| 196 | }
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| 197 | pos = next + 1;
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| 198 | token.sourceEndIndex = token.unclosed ? next : pos;
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| 199 | code = value.charCodeAt(pos);
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| 200 | tokens.push(token);
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| 201 | } else {
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| 202 | balanced += 1;
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| 203 | token.after = "";
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| 204 | token.sourceEndIndex = pos + 1;
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| 205 | tokens.push(token);
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| 206 | stack.push(token);
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| 207 | tokens = token.nodes = [];
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| 208 | parent = token;
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| 209 | }
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| 210 | name = "";
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| 211 | // Close parentheses
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| 212 | } else if (closeParentheses === code && balanced) {
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| 213 | pos += 1;
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| 214 | code = value.charCodeAt(pos);
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| 215 | parent.after = after;
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| 216 | parent.sourceEndIndex += after.length;
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| 217 | after = "";
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| 218 | balanced -= 1;
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| 219 | stack[stack.length - 1].sourceEndIndex = pos;
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| 220 | stack.pop();
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| 221 | parent = stack[balanced];
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| 222 | tokens = parent.nodes;
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| 223 | // Words
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| 224 | } else {
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| 225 | next = pos;
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| 226 | do {
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| 227 | if (code === backslash) {
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| 228 | next += 1;
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| 229 | }
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| 230 | next += 1;
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| 231 | code = value.charCodeAt(next);
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| 232 | }while (next < max && !(code <= 32 || code === singleQuote || code === doubleQuote || code === comma || code === colon || code === slash || code === openParentheses || code === star && parent && parent.type === "function" && true || code === slash && parent.type === "function" && true || code === closeParentheses && balanced));
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| 233 | token = value.slice(pos, next);
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| 234 | if (openParentheses === code) {
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| 235 | name = token;
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| 236 | } else if ((uLower === token.charCodeAt(0) || uUpper === token.charCodeAt(0)) && plus === token.charCodeAt(1) && isUnicodeRange.test(token.slice(2))) {
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| 237 | tokens.push({
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| 238 | type: "unicode-range",
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| 239 | sourceIndex: pos,
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| 240 | sourceEndIndex: next,
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| 241 | value: token
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| 242 | });
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| 243 | } else {
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| 244 | tokens.push({
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| 245 | type: "word",
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| 246 | sourceIndex: pos,
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| 247 | sourceEndIndex: next,
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| 248 | value: token
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| 249 | });
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| 250 | }
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| 251 | pos = next;
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| 252 | }
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| 253 | }
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| 254 | for(pos = stack.length - 1; pos; pos -= 1){
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| 255 | stack[pos].unclosed = true;
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| 256 | stack[pos].sourceEndIndex = value.length;
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| 257 | }
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| 258 | return stack[0].nodes;
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| 259 | };
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