8 lines
11 KiB
Plaintext
8 lines
11 KiB
Plaintext
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{
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"version": 3,
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"sources": ["../../../src/js/parser.js"],
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"sourcesContent": ["/**\n * parser.js\n */\n\n/* import */\nimport { findAll, parse, toPlainObject, walk } from 'css-tree';\n\n/* constants */\nimport {\n DUO, HEX, MAX_BIT_16, BIT_HYPHEN, REG_LOGICAL_PSEUDO, REG_SHADOW_PSEUDO,\n SELECTOR, SELECTOR_PSEUDO_CLASS, SELECTOR_PSEUDO_ELEMENT, SYNTAX_ERR,\n TYPE_FROM, TYPE_TO, U_FFFD\n} from './constant.js';\n\n/**\n * unescape selector\n * @param {string} selector - CSS selector\n * @returns {?string} - unescaped selector\n */\nexport const unescapeSelector = (selector = '') => {\n if (typeof selector === 'string' && selector.indexOf('\\\\', 0) >= 0) {\n const arr = selector.split('\\\\');\n const l = arr.length;\n for (let i = 1; i < l; i++) {\n let item = arr[i];\n if (item === '' && i === l - 1) {\n item = U_FFFD;\n } else {\n const hexExists = /^([\\da-f]{1,6}\\s?)/i.exec(item);\n if (hexExists) {\n const [, hex] = hexExists;\n let str;\n try {\n const low = parseInt('D800', HEX);\n const high = parseInt('DFFF', HEX);\n const deci = parseInt(hex, HEX);\n if (deci === 0 || (deci >= low && deci <= high)) {\n str = U_FFFD;\n } else {\n str = String.fromCodePoint(deci);\n }\n } catch (e) {\n str = U_FFFD;\n }\n let postStr = '';\n if (item.length > hex.length) {\n postStr = item.substring(hex.length);\n }\n item = `${str}${postStr}`;\n // whitespace\n } else if (/^[\\n\\r\\f]/.test(item)) {\n item = '\\\\' + item;\n }\n }\n arr[i] = item;\n }\n selector = arr.join('');\n }\n return selector;\n};\n\n/**\n * preprocess\n * @see https://drafts.csswg.org/css-syntax-3/#input-preprocessing\n * @param {...*} args - arguments\n * @returns {string} - filtered selector string\n */\nexport const preprocess = (...args) => {\n if (!args.length) {\n throw new TypeError('1 argument required, but only 0 present.');\n }\n let [selector] = args;\n if (typeof selector === 'string') {\n let index = 0;\n while (index >= 0) {\n index = selector.indexOf('#', index);\n if (index < 0) {\n break;\n }\n const preHash = selector.substring(0, index + 1);\n let postHash = selector.substring(index + 1);\n const codePoint = postHash.codePointAt(0);\n // @see https://drafts.csswg.org/selectors/#id-selectors\n // @see https://drafts.csswg.org/css-syntax-3/#ident-token-diagram\n if (codePoint === BIT_HYPHEN) {\n if (/^\\d$/.test(postHash.substring(1, 2))) {\n throw new DOMException(`Invalid selector ${selector}`, SYNTAX_ERR);\n }\n // escape char above 0xFFFF\n } else if (codePoint > MAX_BIT_16) {\n const str = `\\\\${codePoint.toString(HEX)} `;\n if (postHash.length === DUO) {\n postHash = str;\n } else {\n postHash = `${str}${postHash.substring(DUO)}`;\n }\n }\n selector = `${preHash}${postHash}`;\n index++;\n }\n selector = selector.replace(/\\f|\\r\\n?/g, '\\n')\n .replace(/[\\0\\uD800-\\uDFFF]|\\\\$/g, U_FFFD);\n } else if (selector === undefined || selector === null) {\n selector = Object.prototype.toString.call(selector)\n .slice(TYPE_FROM, TYPE_TO).toLowerCase();\n } else if (Array.isArray(selector)) {\n selector = selector.join(',');\n } else if (Object.prototype.hasOwnProperty.call(selector, 'toString')) {\n selector = selector.toString();\n } else {\n throw new DOMException(`Invalid selector ${selector}`, SYNTAX_ERR);\n }\n return selector;\n};\n\n/**\n * create AST from CSS selector\n * @param {string} selector - CSS selector\n * @returns {object} - AST\n */\nexport const parseSelector = selector => {\n selector = preprocess(selector);\n // invalid selectors\n if (/^$|^\\s*>|,\\s*$/.test(selector)) {\n throw new DOMException(`Invalid selector ${selector}`, SYNTAX_ERR);\n }\n let res;\n try {\n const ast = par
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"names": ["parser_exports", "__export", "parseSelector", "preprocess", "unescapeSelector", "walkAST", "__toCommonJS", "import_css_tree", "import_constant", "selector", "arr", "l", "item", "hexExists", "hex", "str", "low", "high", "deci", "postStr", "args", "index", "preHash", "postHash", "codePoint", "res", "ast", "e", "regLang", "lang", "range", "escapedRange", "escapedLang", "branches", "hasPseudoFunc", "node", "list", "itemList", "i", "name", "type", "children", "grandChildren", "greatGrandChildren"]
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}
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