tokenize.js 31 KB

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  1. 'use strict';
  2. exports.__esModule = true;
  3. exports.default = tokenize;
  4. var SINGLE_QUOTE = 39;
  5. var DOUBLE_QUOTE = 34;
  6. var BACKSLASH = 92;
  7. var SLASH = 47;
  8. var NEWLINE = 10;
  9. var SPACE = 32;
  10. var FEED = 12;
  11. var TAB = 9;
  12. var CR = 13;
  13. var OPEN_SQUARE = 91;
  14. var CLOSE_SQUARE = 93;
  15. var OPEN_PARENTHESES = 40;
  16. var CLOSE_PARENTHESES = 41;
  17. var OPEN_CURLY = 123;
  18. var CLOSE_CURLY = 125;
  19. var SEMICOLON = 59;
  20. var ASTERISK = 42;
  21. var COLON = 58;
  22. var AT = 64;
  23. var RE_AT_END = /[ \n\t\r\f\{\(\)'"\\;/\[\]#]/g;
  24. var RE_WORD_END = /[ \n\t\r\f\(\)\{\}:;@!'"\\\]\[#]|\/(?=\*)/g;
  25. var RE_BAD_BRACKET = /.[\\\/\("'\n]/;
  26. function tokenize(input) {
  27. var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  28. var tokens = [];
  29. var css = input.css.valueOf();
  30. var ignore = options.ignoreErrors;
  31. var code = void 0,
  32. next = void 0,
  33. quote = void 0,
  34. lines = void 0,
  35. last = void 0,
  36. content = void 0,
  37. escape = void 0,
  38. nextLine = void 0,
  39. nextOffset = void 0,
  40. escaped = void 0,
  41. escapePos = void 0,
  42. prev = void 0,
  43. n = void 0;
  44. var length = css.length;
  45. var offset = -1;
  46. var line = 1;
  47. var pos = 0;
  48. function unclosed(what) {
  49. throw input.error('Unclosed ' + what, line, pos - offset);
  50. }
  51. while (pos < length) {
  52. code = css.charCodeAt(pos);
  53. if (code === NEWLINE || code === FEED || code === CR && css.charCodeAt(pos + 1) !== NEWLINE) {
  54. offset = pos;
  55. line += 1;
  56. }
  57. switch (code) {
  58. case NEWLINE:
  59. case SPACE:
  60. case TAB:
  61. case CR:
  62. case FEED:
  63. next = pos;
  64. do {
  65. next += 1;
  66. code = css.charCodeAt(next);
  67. if (code === NEWLINE) {
  68. offset = next;
  69. line += 1;
  70. }
  71. } while (code === SPACE || code === NEWLINE || code === TAB || code === CR || code === FEED);
  72. tokens.push(['space', css.slice(pos, next)]);
  73. pos = next - 1;
  74. break;
  75. case OPEN_SQUARE:
  76. tokens.push(['[', '[', line, pos - offset]);
  77. break;
  78. case CLOSE_SQUARE:
  79. tokens.push([']', ']', line, pos - offset]);
  80. break;
  81. case OPEN_CURLY:
  82. tokens.push(['{', '{', line, pos - offset]);
  83. break;
  84. case CLOSE_CURLY:
  85. tokens.push(['}', '}', line, pos - offset]);
  86. break;
  87. case COLON:
  88. tokens.push([':', ':', line, pos - offset]);
  89. break;
  90. case SEMICOLON:
  91. tokens.push([';', ';', line, pos - offset]);
  92. break;
  93. case OPEN_PARENTHESES:
  94. prev = tokens.length ? tokens[tokens.length - 1][1] : '';
  95. n = css.charCodeAt(pos + 1);
  96. if (prev === 'url' && n !== SINGLE_QUOTE && n !== DOUBLE_QUOTE && n !== SPACE && n !== NEWLINE && n !== TAB && n !== FEED && n !== CR) {
  97. next = pos;
  98. do {
  99. escaped = false;
  100. next = css.indexOf(')', next + 1);
  101. if (next === -1) {
  102. if (ignore) {
  103. next = pos;
  104. break;
  105. } else {
  106. unclosed('bracket');
  107. }
  108. }
  109. escapePos = next;
  110. while (css.charCodeAt(escapePos - 1) === BACKSLASH) {
  111. escapePos -= 1;
  112. escaped = !escaped;
  113. }
  114. } while (escaped);
  115. tokens.push(['brackets', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
  116. pos = next;
  117. } else {
  118. next = css.indexOf(')', pos + 1);
  119. content = css.slice(pos, next + 1);
  120. if (next === -1 || RE_BAD_BRACKET.test(content)) {
  121. tokens.push(['(', '(', line, pos - offset]);
  122. } else {
  123. tokens.push(['brackets', content, line, pos - offset, line, next - offset]);
  124. pos = next;
  125. }
  126. }
  127. break;
  128. case CLOSE_PARENTHESES:
  129. tokens.push([')', ')', line, pos - offset]);
  130. break;
  131. case SINGLE_QUOTE:
  132. case DOUBLE_QUOTE:
  133. quote = code === SINGLE_QUOTE ? '\'' : '"';
  134. next = pos;
  135. do {
  136. escaped = false;
  137. next = css.indexOf(quote, next + 1);
  138. if (next === -1) {
  139. if (ignore) {
  140. next = pos + 1;
  141. break;
  142. } else {
  143. unclosed('string');
  144. }
  145. }
  146. escapePos = next;
  147. while (css.charCodeAt(escapePos - 1) === BACKSLASH) {
  148. escapePos -= 1;
  149. escaped = !escaped;
  150. }
  151. } while (escaped);
  152. content = css.slice(pos, next + 1);
  153. lines = content.split('\n');
  154. last = lines.length - 1;
  155. if (last > 0) {
  156. nextLine = line + last;
  157. nextOffset = next - lines[last].length;
  158. } else {
  159. nextLine = line;
  160. nextOffset = offset;
  161. }
  162. tokens.push(['string', css.slice(pos, next + 1), line, pos - offset, nextLine, next - nextOffset]);
  163. offset = nextOffset;
  164. line = nextLine;
  165. pos = next;
  166. break;
  167. case AT:
  168. RE_AT_END.lastIndex = pos + 1;
  169. RE_AT_END.test(css);
  170. if (RE_AT_END.lastIndex === 0) {
  171. next = css.length - 1;
  172. } else {
  173. next = RE_AT_END.lastIndex - 2;
  174. }
  175. tokens.push(['at-word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
  176. pos = next;
  177. break;
  178. case BACKSLASH:
  179. next = pos;
  180. escape = true;
  181. while (css.charCodeAt(next + 1) === BACKSLASH) {
  182. next += 1;
  183. escape = !escape;
  184. }
  185. code = css.charCodeAt(next + 1);
  186. if (escape && code !== SLASH && code !== SPACE && code !== NEWLINE && code !== TAB && code !== CR && code !== FEED) {
  187. next += 1;
  188. }
  189. tokens.push(['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
  190. pos = next;
  191. break;
  192. default:
  193. if (code === SLASH && css.charCodeAt(pos + 1) === ASTERISK) {
  194. next = css.indexOf('*/', pos + 2) + 1;
  195. if (next === 0) {
  196. if (ignore) {
  197. next = css.length;
  198. } else {
  199. unclosed('comment');
  200. }
  201. }
  202. content = css.slice(pos, next + 1);
  203. lines = content.split('\n');
  204. last = lines.length - 1;
  205. if (last > 0) {
  206. nextLine = line + last;
  207. nextOffset = next - lines[last].length;
  208. } else {
  209. nextLine = line;
  210. nextOffset = offset;
  211. }
  212. tokens.push(['comment', content, line, pos - offset, nextLine, next - nextOffset]);
  213. offset = nextOffset;
  214. line = nextLine;
  215. pos = next;
  216. } else {
  217. RE_WORD_END.lastIndex = pos + 1;
  218. RE_WORD_END.test(css);
  219. if (RE_WORD_END.lastIndex === 0) {
  220. next = css.length - 1;
  221. } else {
  222. next = RE_WORD_END.lastIndex - 2;
  223. }
  224. tokens.push(['word', css.slice(pos, next + 1), line, pos - offset, line, next - offset]);
  225. pos = next;
  226. }
  227. break;
  228. }
  229. pos++;
  230. }
  231. return tokens;
  232. }
  233. module.exports = exports['default'];
  234. //# 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SINGLE_QUOTE      = '\\''.charCodeAt(0);\nconst DOUBLE_QUOTE      =  '\"'.charCodeAt(0);\nconst BACKSLASH         = '\\\\'.charCodeAt(0);\nconst SLASH             =  '/'.charCodeAt(0);\nconst NEWLINE           = '\\n'.charCodeAt(0);\nconst SPACE             =  ' '.charCodeAt(0);\nconst FEED              = '\\f'.charCodeAt(0);\nconst TAB               = '\\t'.charCodeAt(0);\nconst CR                = '\\r'.charCodeAt(0);\nconst OPEN_SQUARE       =  '['.charCodeAt(0);\nconst CLOSE_SQUARE      =  ']'.charCodeAt(0);\nconst OPEN_PARENTHESES  =  '('.charCodeAt(0);\nconst CLOSE_PARENTHESES =  ')'.charCodeAt(0);\nconst OPEN_CURLY        =  '{'.charCodeAt(0);\nconst CLOSE_CURLY       =  '}'.charCodeAt(0);\nconst SEMICOLON         =  ';'.charCodeAt(0);\nconst ASTERISK          =  '*'.charCodeAt(0);\nconst COLON             =  ':'.charCodeAt(0);\nconst AT                =  '@'.charCodeAt(0);\n\nconst RE_AT_END      = /[ \\n\\t\\r\\f\\{\\(\\)'\"\\\\;/\\[\\]#]/g;\nconst RE_WORD_END    = /[ \\n\\t\\r\\f\\(\\)\\{\\}:;@!'\"\\\\\\]\\[#]|\\/(?=\\*)/g;\nconst RE_BAD_BRACKET = /.[\\\\\\/\\(\"'\\n]/;\n\nexport default function tokenize(input, options = { }) {\n    let tokens = [];\n    let css    = input.css.valueOf();\n\n    let ignore = options.ignoreErrors;\n\n    let code, next, quote, lines, last, content, escape,\n        nextLine, nextOffset, escaped, escapePos, prev, n;\n\n    let length = css.length;\n    let offset = -1;\n    let line   =  1;\n    let pos    =  0;\n\n    function unclosed(what) {\n        throw input.error('Unclosed ' + what, line, pos - offset);\n    }\n\n    while ( pos < length ) {\n        code = css.charCodeAt(pos);\n\n        if ( code === NEWLINE || code === FEED ||\n             code === CR && css.charCodeAt(pos + 1) !== NEWLINE ) {\n            offset = pos;\n            line  += 1;\n        }\n\n        switch ( code ) {\n        case NEWLINE:\n        case SPACE:\n        case TAB:\n        case CR:\n        case FEED:\n            next = pos;\n            do {\n                next += 1;\n                code = css.charCodeAt(next);\n                if ( code === NEWLINE ) {\n                    offset = next;\n                    line  += 1;\n                }\n            } while ( code === SPACE   ||\n                      code === NEWLINE ||\n                      code === TAB     ||\n                      code === CR      ||\n                      code === FEED );\n\n            tokens.push(['space', css.slice(pos, next)]);\n            pos = next - 1;\n            break;\n\n        case OPEN_SQUARE:\n            tokens.push(['[', '[', line, pos - offset]);\n            break;\n\n        case CLOSE_SQUARE:\n            tokens.push([']', ']', line, pos - offset]);\n            break;\n\n        case OPEN_CURLY:\n            tokens.push(['{', '{', line, pos - offset]);\n            break;\n\n        case CLOSE_CURLY:\n            tokens.push(['}', '}', line, pos - offset]);\n            break;\n\n        case COLON:\n            tokens.push([':', ':', line, pos - offset]);\n            break;\n\n        case SEMICOLON:\n            tokens.push([';', ';', line, pos - offset]);\n            break;\n\n        case OPEN_PARENTHESES:\n            prev = tokens.length ? tokens[tokens.length - 1][1] : '';\n            n    = css.charCodeAt(pos + 1);\n            if ( prev === 'url' && n !== SINGLE_QUOTE && n !== DOUBLE_QUOTE &&\n                                   n !== SPACE && n !== NEWLINE && n !== TAB &&\n                                   n !== FEED && n !== CR ) {\n                next = pos;\n                do {\n                    escaped = false;\n                    next    = css.indexOf(')', next + 1);\n                    if ( next === -1 ) {\n                        if ( ignore ) {\n                            next = pos;\n                            break;\n                        } else {\n                            unclosed('bracket');\n                        }\n                    }\n                    escapePos = next;\n                    while ( css.charCodeAt(escapePos - 1) === BACKSLASH ) {\n                        escapePos -= 1;\n                        escaped = !escaped;\n                    }\n                } while ( escaped );\n\n                tokens.push(['brackets', css.slice(pos, next + 1),\n                    line, pos  - offset,\n                    line, next - offset\n                ]);\n                pos = next;\n\n            } else {\n                next    = css.indexOf(')', pos + 1);\n                content = css.slice(pos, next + 1);\n\n                if ( next === -1 || RE_BAD_BRACKET.test(content) ) {\n                    tokens.push(['(', '(', line, pos - offset]);\n                } else {\n                    tokens.push(['brackets', content,\n                        line, pos  - offset,\n                        line, next - offset\n                    ]);\n                    pos = next;\n                }\n            }\n\n            break;\n\n        case CLOSE_PARENTHESES:\n            tokens.push([')', ')', line, pos - offset]);\n            break;\n\n        case SINGLE_QUOTE:\n        case DOUBLE_QUOTE:\n            quote = code === SINGLE_QUOTE ? '\\'' : '\"';\n            next  = pos;\n            do {\n                escaped = false;\n                next    = css.indexOf(quote, next + 1);\n                if ( next === -1 ) {\n                    if ( ignore ) {\n                        next = pos + 1;\n                        break;\n                    } else {\n                        unclosed('string');\n                    }\n                }\n                escapePos = next;\n                while ( css.charCodeAt(escapePos - 1) === BACKSLASH ) {\n                    escapePos -= 1;\n                    escaped = !escaped;\n                }\n            } while ( escaped );\n\n            content = css.slice(pos, next + 1);\n            lines   = content.split('\\n');\n            last    = lines.length - 1;\n\n            if ( last > 0 ) {\n                nextLine   = line + last;\n                nextOffset = next - lines[last].length;\n            } else {\n                nextLine   = line;\n                nextOffset = offset;\n            }\n\n            tokens.push(['string', css.slice(pos, next + 1),\n                line, pos  - offset,\n                nextLine, next - nextOffset\n            ]);\n\n            offset = nextOffset;\n            line   = nextLine;\n            pos    = next;\n            break;\n\n        case AT:\n            RE_AT_END.lastIndex = pos + 1;\n            RE_AT_END.test(css);\n            if ( RE_AT_END.lastIndex === 0 ) {\n                next = css.length - 1;\n            } else {\n                next = RE_AT_END.lastIndex - 2;\n            }\n            tokens.push(['at-word', css.slice(pos, next + 1),\n                line, pos  - offset,\n                line, next - offset\n            ]);\n            pos = next;\n            break;\n\n        case BACKSLASH:\n            next   = pos;\n            escape = true;\n            while ( css.charCodeAt(next + 1) === BACKSLASH ) {\n                next  += 1;\n                escape = !escape;\n            }\n            code = css.charCodeAt(next + 1);\n            if ( escape && (code !== SLASH   &&\n                            code !== SPACE   &&\n                            code !== NEWLINE &&\n                            code !== TAB     &&\n                            code !== CR      &&\n                            code !== FEED ) ) {\n                next += 1;\n            }\n            tokens.push(['word', css.slice(pos, next + 1),\n                line, pos  - offset,\n                line, next - offset\n            ]);\n            pos = next;\n            break;\n\n        default:\n            if ( code === SLASH && css.charCodeAt(pos + 1) === ASTERISK ) {\n                next = css.indexOf('*/', pos + 2) + 1;\n                if ( next === 0 ) {\n                    if ( ignore ) {\n                        next = css.length;\n                    } else {\n                        unclosed('comment');\n                    }\n                }\n\n                content = css.slice(pos, next + 1);\n                lines   = content.split('\\n');\n                last    = lines.length - 1;\n\n                if ( last > 0 ) {\n                    nextLine   = line + last;\n                    nextOffset = next - lines[last].length;\n                } else {\n                    nextLine   = line;\n                    nextOffset = offset;\n                }\n\n                tokens.push(['comment', content,\n                    line,     pos  - offset,\n                    nextLine, next - nextOffset\n                ]);\n\n                offset = nextOffset;\n                line   = nextLine;\n                pos    = next;\n\n            } else {\n                RE_WORD_END.lastIndex = pos + 1;\n                RE_WORD_END.test(css);\n                if ( RE_WORD_END.lastIndex === 0 ) {\n                    next = css.length - 1;\n                } else {\n                    next = RE_WORD_END.lastIndex - 2;\n                }\n\n                tokens.push(['word', css.slice(pos, next + 1),\n                    line, pos  - offset,\n                    line, next - offset\n                ]);\n                pos = next;\n            }\n\n            break;\n        }\n\n        pos++;\n    }\n\n    return tokens;\n}\n"]}