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Diffstat (limited to 'node_modules/regjsparser/parser.js')
| -rw-r--r-- | node_modules/regjsparser/parser.js | 962 |
1 files changed, 0 insertions, 962 deletions
diff --git a/node_modules/regjsparser/parser.js b/node_modules/regjsparser/parser.js deleted file mode 100644 index ae414a3..0000000 --- a/node_modules/regjsparser/parser.js +++ /dev/null @@ -1,962 +0,0 @@ -// regjsparser -// -// ================================================================== -// -// See ECMA-262 Standard: 15.10.1 -// -// NOTE: The ECMA-262 standard uses the term "Assertion" for /^/. Here the -// term "Anchor" is used. -// -// Pattern :: -// Disjunction -// -// Disjunction :: -// Alternative -// Alternative | Disjunction -// -// Alternative :: -// [empty] -// Alternative Term -// -// Term :: -// Anchor -// Atom -// Atom Quantifier -// -// Anchor :: -// ^ -// $ -// \ b -// \ B -// ( ? = Disjunction ) -// ( ? ! Disjunction ) -// -// Quantifier :: -// QuantifierPrefix -// QuantifierPrefix ? -// -// QuantifierPrefix :: -// * -// + -// ? -// { DecimalDigits } -// { DecimalDigits , } -// { DecimalDigits , DecimalDigits } -// -// Atom :: -// PatternCharacter -// . -// \ AtomEscape -// CharacterClass -// ( Disjunction ) -// ( ? : Disjunction ) -// -// PatternCharacter :: -// SourceCharacter but not any of: ^ $ \ . * + ? ( ) [ ] { } | -// -// AtomEscape :: -// DecimalEscape -// CharacterEscape -// CharacterClassEscape -// -// CharacterEscape[U] :: -// ControlEscape -// c ControlLetter -// HexEscapeSequence -// RegExpUnicodeEscapeSequence[?U] (ES6) -// IdentityEscape[?U] -// -// ControlEscape :: -// one of f n r t v -// ControlLetter :: -// one of -// a b c d e f g h i j k l m n o p q r s t u v w x y z -// A B C D E F G H I J K L M N O P Q R S T U V W X Y Z -// -// IdentityEscape :: -// SourceCharacter but not IdentifierPart -// <ZWJ> -// <ZWNJ> -// -// DecimalEscape :: -// DecimalIntegerLiteral [lookahead ∉ DecimalDigit] -// -// CharacterClassEscape :: -// one of d D s S w W -// -// CharacterClass :: -// [ [lookahead ∉ {^}] ClassRanges ] -// [ ^ ClassRanges ] -// -// ClassRanges :: -// [empty] -// NonemptyClassRanges -// -// NonemptyClassRanges :: -// ClassAtom -// ClassAtom NonemptyClassRangesNoDash -// ClassAtom - ClassAtom ClassRanges -// -// NonemptyClassRangesNoDash :: -// ClassAtom -// ClassAtomNoDash NonemptyClassRangesNoDash -// ClassAtomNoDash - ClassAtom ClassRanges -// -// ClassAtom :: -// - -// ClassAtomNoDash -// -// ClassAtomNoDash :: -// SourceCharacter but not one of \ or ] or - -// \ ClassEscape -// -// ClassEscape :: -// DecimalEscape -// b -// CharacterEscape -// CharacterClassEscape - -(function() { - - function parse(str, flags) { - function addRaw(node) { - node.raw = str.substring(node.range[0], node.range[1]); - return node; - } - - function updateRawStart(node, start) { - node.range[0] = start; - return addRaw(node); - } - - function createAnchor(kind, rawLength) { - return addRaw({ - type: 'anchor', - kind: kind, - range: [ - pos - rawLength, - pos - ] - }); - } - - function createValue(kind, codePoint, from, to) { - return addRaw({ - type: 'value', - kind: kind, - codePoint: codePoint, - range: [from, to] - }); - } - - function createEscaped(kind, codePoint, value, fromOffset) { - fromOffset = fromOffset || 0; - return createValue(kind, codePoint, pos - (value.length + fromOffset), pos); - } - - function createCharacter(matches) { - var _char = matches[0]; - var first = _char.charCodeAt(0); - if (hasUnicodeFlag) { - var second; - if (_char.length === 1 && first >= 0xD800 && first <= 0xDBFF) { - second = lookahead().charCodeAt(0); - if (second >= 0xDC00 && second <= 0xDFFF) { - // Unicode surrogate pair - pos++; - return createValue( - 'symbol', - (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000, - pos - 2, pos); - } - } - } - return createValue('symbol', first, pos - 1, pos); - } - - function createDisjunction(alternatives, from, to) { - return addRaw({ - type: 'disjunction', - body: alternatives, - range: [ - from, - to - ] - }); - } - - function createDot() { - return addRaw({ - type: 'dot', - range: [ - pos - 1, - pos - ] - }); - } - - function createCharacterClassEscape(value) { - return addRaw({ - type: 'characterClassEscape', - value: value, - range: [ - pos - 2, - pos - ] - }); - } - - function createReference(matchIndex) { - return addRaw({ - type: 'reference', - matchIndex: parseInt(matchIndex, 10), - range: [ - pos - 1 - matchIndex.length, - pos - ] - }); - } - - function createGroup(behavior, disjunction, from, to) { - return addRaw({ - type: 'group', - behavior: behavior, - body: disjunction, - range: [ - from, - to - ] - }); - } - - function createQuantifier(min, max, from, to) { - if (to == null) { - from = pos - 1; - to = pos; - } - - return addRaw({ - type: 'quantifier', - min: min, - max: max, - greedy: true, - body: null, // set later on - range: [ - from, - to - ] - }); - } - - function createAlternative(terms, from, to) { - return addRaw({ - type: 'alternative', - body: terms, - range: [ - from, - to - ] - }); - } - - function createCharacterClass(classRanges, negative, from, to) { - return addRaw({ - type: 'characterClass', - body: classRanges, - negative: negative, - range: [ - from, - to - ] - }); - } - - function createClassRange(min, max, from, to) { - // See 15.10.2.15: - if (min.codePoint > max.codePoint) { - bail('invalid range in character class', min.raw + '-' + max.raw, from, to); - } - - return addRaw({ - type: 'characterClassRange', - min: min, - max: max, - range: [ - from, - to - ] - }); - } - - function flattenBody(body) { - if (body.type === 'alternative') { - return body.body; - } else { - return [body]; - } - } - - function isEmpty(obj) { - return obj.type === 'empty'; - } - - function incr(amount) { - amount = (amount || 1); - var res = str.substring(pos, pos + amount); - pos += (amount || 1); - return res; - } - - function skip(value) { - if (!match(value)) { - bail('character', value); - } - } - - function match(value) { - if (str.indexOf(value, pos) === pos) { - return incr(value.length); - } - } - - function lookahead() { - return str[pos]; - } - - function current(value) { - return str.indexOf(value, pos) === pos; - } - - function next(value) { - return str[pos + 1] === value; - } - - function matchReg(regExp) { - var subStr = str.substring(pos); - var res = subStr.match(regExp); - if (res) { - res.range = []; - res.range[0] = pos; - incr(res[0].length); - res.range[1] = pos; - } - return res; - } - - function parseDisjunction() { - // Disjunction :: - // Alternative - // Alternative | Disjunction - var res = [], from = pos; - res.push(parseAlternative()); - - while (match('|')) { - res.push(parseAlternative()); - } - - if (res.length === 1) { - return res[0]; - } - - return createDisjunction(res, from, pos); - } - - function parseAlternative() { - var res = [], from = pos; - var term; - - // Alternative :: - // [empty] - // Alternative Term - while (term = parseTerm()) { - res.push(term); - } - - if (res.length === 1) { - return res[0]; - } - - return createAlternative(res, from, pos); - } - - function parseTerm() { - // Term :: - // Anchor - // Atom - // Atom Quantifier - - if (pos >= str.length || current('|') || current(')')) { - return null; /* Means: The term is empty */ - } - - var anchor = parseAnchor(); - - if (anchor) { - return anchor; - } - - var atom = parseAtom(); - if (!atom) { - bail('Expected atom'); - } - var quantifier = parseQuantifier() || false; - if (quantifier) { - quantifier.body = flattenBody(atom); - // The quantifier contains the atom. Therefore, the beginning of the - // quantifier range is given by the beginning of the atom. - updateRawStart(quantifier, atom.range[0]); - return quantifier; - } - return atom; - } - - function parseGroup(matchA, typeA, matchB, typeB) { - var type = null, from = pos; - - if (match(matchA)) { - type = typeA; - } else if (match(matchB)) { - type = typeB; - } else { - return false; - } - - var body = parseDisjunction(); - if (!body) { - bail('Expected disjunction'); - } - skip(')'); - var group = createGroup(type, flattenBody(body), from, pos); - - if (type == 'normal') { - // Keep track of the number of closed groups. This is required for - // parseDecimalEscape(). In case the string is parsed a second time the - // value already holds the total count and no incrementation is required. - if (firstIteration) { - closedCaptureCounter++; - } - } - return group; - } - - function parseAnchor() { - // Anchor :: - // ^ - // $ - // \ b - // \ B - // ( ? = Disjunction ) - // ( ? ! Disjunction ) - var res, from = pos; - - if (match('^')) { - return createAnchor('start', 1 /* rawLength */); - } else if (match('$')) { - return createAnchor('end', 1 /* rawLength */); - } else if (match('\\b')) { - return createAnchor('boundary', 2 /* rawLength */); - } else if (match('\\B')) { - return createAnchor('not-boundary', 2 /* rawLength */); - } else { - return parseGroup('(?=', 'lookahead', '(?!', 'negativeLookahead'); - } - } - - function parseQuantifier() { - // Quantifier :: - // QuantifierPrefix - // QuantifierPrefix ? - // - // QuantifierPrefix :: - // * - // + - // ? - // { DecimalDigits } - // { DecimalDigits , } - // { DecimalDigits , DecimalDigits } - - var res, from = pos; - var quantifier; - var min, max; - - if (match('*')) { - quantifier = createQuantifier(0); - } - else if (match('+')) { - quantifier = createQuantifier(1); - } - else if (match('?')) { - quantifier = createQuantifier(0, 1); - } - else if (res = matchReg(/^\{([0-9]+)\}/)) { - min = parseInt(res[1], 10); - quantifier = createQuantifier(min, min, res.range[0], res.range[1]); - } - else if (res = matchReg(/^\{([0-9]+),\}/)) { - min = parseInt(res[1], 10); - quantifier = createQuantifier(min, undefined, res.range[0], res.range[1]); - } - else if (res = matchReg(/^\{([0-9]+),([0-9]+)\}/)) { - min = parseInt(res[1], 10); - max = parseInt(res[2], 10); - if (min > max) { - bail('numbers out of order in {} quantifier', '', from, pos); - } - quantifier = createQuantifier(min, max, res.range[0], res.range[1]); - } - - if (quantifier) { - if (match('?')) { - quantifier.greedy = false; - quantifier.range[1] += 1; - } - } - - return quantifier; - } - - function parseAtom() { - // Atom :: - // PatternCharacter - // . - // \ AtomEscape - // CharacterClass - // ( Disjunction ) - // ( ? : Disjunction ) - - var res; - - // jviereck: allow ']', '}' here as well to be compatible with browser's - // implementations: ']'.match(/]/); - // if (res = matchReg(/^[^^$\\.*+?()[\]{}|]/)) { - if (res = matchReg(/^[^^$\\.*+?(){[|]/)) { - // PatternCharacter - return createCharacter(res); - } - else if (match('.')) { - // . - return createDot(); - } - else if (match('\\')) { - // \ AtomEscape - res = parseAtomEscape(); - if (!res) { - bail('atomEscape'); - } - return res; - } - else if (res = parseCharacterClass()) { - return res; - } - else { - // ( Disjunction ) - // ( ? : Disjunction ) - return parseGroup('(?:', 'ignore', '(', 'normal'); - } - } - - function parseUnicodeSurrogatePairEscape(firstEscape) { - if (hasUnicodeFlag) { - var first, second; - if (firstEscape.kind == 'unicodeEscape' && - (first = firstEscape.codePoint) >= 0xD800 && first <= 0xDBFF && - current('\\') && next('u') ) { - var prevPos = pos; - pos++; - var secondEscape = parseClassEscape(); - if (secondEscape.kind == 'unicodeEscape' && - (second = secondEscape.codePoint) >= 0xDC00 && second <= 0xDFFF) { - // Unicode surrogate pair - firstEscape.range[1] = secondEscape.range[1]; - firstEscape.codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; - firstEscape.type = 'value'; - firstEscape.kind = 'unicodeCodePointEscape'; - addRaw(firstEscape); - } - else { - pos = prevPos; - } - } - } - return firstEscape; - } - - function parseClassEscape() { - return parseAtomEscape(true); - } - - function parseAtomEscape(insideCharacterClass) { - // AtomEscape :: - // DecimalEscape - // CharacterEscape - // CharacterClassEscape - - var res, from = pos; - - res = parseDecimalEscape(); - if (res) { - return res; - } - - // For ClassEscape - if (insideCharacterClass) { - if (match('b')) { - // 15.10.2.19 - // The production ClassEscape :: b evaluates by returning the - // CharSet containing the one character <BS> (Unicode value 0008). - return createEscaped('singleEscape', 0x0008, '\\b'); - } else if (match('B')) { - bail('\\B not possible inside of CharacterClass', '', from); - } - } - - res = parseCharacterEscape(); - - return res; - } - - - function parseDecimalEscape() { - // DecimalEscape :: - // DecimalIntegerLiteral [lookahead ∉ DecimalDigit] - // CharacterClassEscape :: one of d D s S w W - - var res, match; - - if (res = matchReg(/^(?!0)\d+/)) { - match = res[0]; - var refIdx = parseInt(res[0], 10); - if (refIdx <= closedCaptureCounter) { - // If the number is smaller than the normal-groups found so - // far, then it is a reference... - return createReference(res[0]); - } else { - // ... otherwise it needs to be interpreted as a octal (if the - // number is in an octal format). If it is NOT octal format, - // then the slash is ignored and the number is matched later - // as normal characters. - - // Recall the negative decision to decide if the input must be parsed - // a second time with the total normal-groups. - backrefDenied.push(refIdx); - - // Reset the position again, as maybe only parts of the previous - // matched numbers are actual octal numbers. E.g. in '019' only - // the '01' should be matched. - incr(-res[0].length); - if (res = matchReg(/^[0-7]{1,3}/)) { - return createEscaped('octal', parseInt(res[0], 8), res[0], 1); - } else { - // If we end up here, we have a case like /\91/. Then the - // first slash is to be ignored and the 9 & 1 to be treated - // like ordinary characters. Create a character for the - // first number only here - other number-characters - // (if available) will be matched later. - res = createCharacter(matchReg(/^[89]/)); - return updateRawStart(res, res.range[0] - 1); - } - } - } - // Only allow octal numbers in the following. All matched numbers start - // with a zero (if the do not, the previous if-branch is executed). - // If the number is not octal format and starts with zero (e.g. `091`) - // then only the zeros `0` is treated here and the `91` are ordinary - // characters. - // Example: - // /\091/.exec('\091')[0].length === 3 - else if (res = matchReg(/^[0-7]{1,3}/)) { - match = res[0]; - if (/^0{1,3}$/.test(match)) { - // If they are all zeros, then only take the first one. - return createEscaped('null', 0x0000, '0', match.length + 1); - } else { - return createEscaped('octal', parseInt(match, 8), match, 1); - } - } else if (res = matchReg(/^[dDsSwW]/)) { - return createCharacterClassEscape(res[0]); - } - return false; - } - - function parseCharacterEscape() { - // CharacterEscape :: - // ControlEscape - // c ControlLetter - // HexEscapeSequence - // UnicodeEscapeSequence - // IdentityEscape - - var res; - if (res = matchReg(/^[fnrtv]/)) { - // ControlEscape - var codePoint = 0; - switch (res[0]) { - case 't': codePoint = 0x009; break; - case 'n': codePoint = 0x00A; break; - case 'v': codePoint = 0x00B; break; - case 'f': codePoint = 0x00C; break; - case 'r': codePoint = 0x00D; break; - } - return createEscaped('singleEscape', codePoint, '\\' + res[0]); - } else if (res = matchReg(/^c([a-zA-Z])/)) { - // c ControlLetter - return createEscaped('controlLetter', res[1].charCodeAt(0) % 32, res[1], 2); - } else if (res = matchReg(/^x([0-9a-fA-F]{2})/)) { - // HexEscapeSequence - return createEscaped('hexadecimalEscape', parseInt(res[1], 16), res[1], 2); - } else if (res = matchReg(/^u([0-9a-fA-F]{4})/)) { - // UnicodeEscapeSequence - return parseUnicodeSurrogatePairEscape( - createEscaped('unicodeEscape', parseInt(res[1], 16), res[1], 2) - ); - } else if (hasUnicodeFlag && (res = matchReg(/^u\{([0-9a-fA-F]+)\}/))) { - // RegExpUnicodeEscapeSequence (ES6 Unicode code point escape) - return createEscaped('unicodeCodePointEscape', parseInt(res[1], 16), res[1], 4); - } else { - // IdentityEscape - return parseIdentityEscape(); - } - } - - // Taken from the Esprima parser. - function isIdentifierPart(ch) { - // Generated by `tools/generate-identifier-regex.js`. - var NonAsciiIdentifierPart = new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]'); - - return (ch === 36) || (ch === 95) || // $ (dollar) and _ (underscore) - (ch >= 65 && ch <= 90) || // A..Z - (ch >= 97 && ch <= 122) || // a..z - (ch >= 48 && ch <= 57) || // 0..9 - (ch === 92) || // \ (backslash) - ((ch >= 0x80) && NonAsciiIdentifierPart.test(String.fromCharCode(ch))); - } - - function parseIdentityEscape() { - // IdentityEscape :: - // SourceCharacter but not IdentifierPart - // <ZWJ> - // <ZWNJ> - - var ZWJ = '\u200C'; - var ZWNJ = '\u200D'; - - var tmp; - - if (!isIdentifierPart(lookahead())) { - tmp = incr(); - return createEscaped('identifier', tmp.charCodeAt(0), tmp, 1); - } - - if (match(ZWJ)) { - // <ZWJ> - return createEscaped('identifier', 0x200C, ZWJ); - } else if (match(ZWNJ)) { - // <ZWNJ> - return createEscaped('identifier', 0x200D, ZWNJ); - } - - return null; - } - - function parseCharacterClass() { - // CharacterClass :: - // [ [lookahead ∉ {^}] ClassRanges ] - // [ ^ ClassRanges ] - - var res, from = pos; - if (res = matchReg(/^\[\^/)) { - res = parseClassRanges(); - skip(']'); - return createCharacterClass(res, true, from, pos); - } else if (match('[')) { - res = parseClassRanges(); - skip(']'); - return createCharacterClass(res, false, from, pos); - } - - return null; - } - - function parseClassRanges() { - // ClassRanges :: - // [empty] - // NonemptyClassRanges - - var res; - if (current(']')) { - // Empty array means nothing insinde of the ClassRange. - return []; - } else { - res = parseNonemptyClassRanges(); - if (!res) { - bail('nonEmptyClassRanges'); - } - return res; - } - } - - function parseHelperClassRanges(atom) { - var from, to, res; - if (current('-') && !next(']')) { - // ClassAtom - ClassAtom ClassRanges - skip('-'); - - res = parseClassAtom(); - if (!res) { - bail('classAtom'); - } - to = pos; - var classRanges = parseClassRanges(); - if (!classRanges) { - bail('classRanges'); - } - from = atom.range[0]; - if (classRanges.type === 'empty') { - return [createClassRange(atom, res, from, to)]; - } - return [createClassRange(atom, res, from, to)].concat(classRanges); - } - - res = parseNonemptyClassRangesNoDash(); - if (!res) { - bail('nonEmptyClassRangesNoDash'); - } - - return [atom].concat(res); - } - - function parseNonemptyClassRanges() { - // NonemptyClassRanges :: - // ClassAtom - // ClassAtom NonemptyClassRangesNoDash - // ClassAtom - ClassAtom ClassRanges - - var atom = parseClassAtom(); - if (!atom) { - bail('classAtom'); - } - - if (current(']')) { - // ClassAtom - return [atom]; - } - - // ClassAtom NonemptyClassRangesNoDash - // ClassAtom - ClassAtom ClassRanges - return parseHelperClassRanges(atom); - } - - function parseNonemptyClassRangesNoDash() { - // NonemptyClassRangesNoDash :: - // ClassAtom - // ClassAtomNoDash NonemptyClassRangesNoDash - // ClassAtomNoDash - ClassAtom ClassRanges - - var res = parseClassAtom(); - if (!res) { - bail('classAtom'); - } - if (current(']')) { - // ClassAtom - return res; - } - - // ClassAtomNoDash NonemptyClassRangesNoDash - // ClassAtomNoDash - ClassAtom ClassRanges - return parseHelperClassRanges(res); - } - - function parseClassAtom() { - // ClassAtom :: - // - - // ClassAtomNoDash - if (match('-')) { - return createCharacter('-'); - } else { - return parseClassAtomNoDash(); - } - } - - function parseClassAtomNoDash() { - // ClassAtomNoDash :: - // SourceCharacter but not one of \ or ] or - - // \ ClassEscape - - var res; - if (res = matchReg(/^[^\\\]-]/)) { - return createCharacter(res[0]); - } else if (match('\\')) { - res = parseClassEscape(); - if (!res) { - bail('classEscape'); - } - - return parseUnicodeSurrogatePairEscape(res); - } - } - - function bail(message, details, from, to) { - from = from == null ? pos : from; - to = to == null ? from : to; - - var contextStart = Math.max(0, from - 10); - var contextEnd = Math.min(to + 10, str.length); - - // Output a bit of context and a line pointing to where our error is. - // - // We are assuming that there are no actual newlines in the content as this is a regular expression. - var context = ' ' + str.substring(contextStart, contextEnd); - var pointer = ' ' + new Array(from - contextStart + 1).join(' ') + '^'; - - throw SyntaxError(message + ' at position ' + from + (details ? ': ' + details : '') + '\n' + context + '\n' + pointer); - } - - var backrefDenied = []; - var closedCaptureCounter = 0; - var firstIteration = true; - var hasUnicodeFlag = (flags || "").indexOf("u") !== -1; - var pos = 0; - - // Convert the input to a string and treat the empty string special. - str = String(str); - if (str === '') { - str = '(?:)'; - } - - var result = parseDisjunction(); - - if (result.range[1] !== str.length) { - bail('Could not parse entire input - got stuck', '', result.range[1]); - } - - // The spec requires to interpret the `\2` in `/\2()()/` as backreference. - // As the parser collects the number of capture groups as the string is - // parsed it is impossible to make these decisions at the point when the - // `\2` is handled. In case the local decision turns out to be wrong after - // the parsing has finished, the input string is parsed a second time with - // the total number of capture groups set. - // - // SEE: https://github.com/jviereck/regjsparser/issues/70 - for (var i = 0; i < backrefDenied.length; i++) { - if (backrefDenied[i] <= closedCaptureCounter) { - // Parse the input a second time. - pos = 0; - firstIteration = false; - return parseDisjunction(); - } - } - - return result; - } - - var regjsparser = { - parse: parse - }; - - if (typeof module !== 'undefined' && module.exports) { - module.exports = regjsparser; - } else { - window.regjsparser = regjsparser; - } - -}()); |