128 lines
4.1 KiB
JavaScript
128 lines
4.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.predefinedEntities = exports.endCharData = exports.attValueNormalizedWhitespace = exports.attValueCharSingleQuote = exports.attValueCharDoubleQuote = void 0;
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exports.isNameChar = isNameChar;
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exports.isNameStartChar = isNameStartChar;
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exports.isReferenceChar = isReferenceChar;
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exports.isWhitespace = isWhitespace;
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exports.isXmlCodePoint = isXmlCodePoint;
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/**
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* Regular expression that matches one or more `AttValue` characters in a
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* double-quoted attribute value.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#NT-AttValue
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*/
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exports.attValueCharDoubleQuote = /["&<]/;
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/**
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* Regular expression that matches one or more `AttValue` characters in a
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* single-quoted attribute value.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#NT-AttValue
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*/
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exports.attValueCharSingleQuote = /['&<]/;
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/**
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* Regular expression that matches a whitespace character that should be
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* normalized to a space character in an attribute value.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#AVNormalize
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*/
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exports.attValueNormalizedWhitespace = /\r\n|[\n\r\t]/g;
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/**
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* Regular expression that matches one or more characters that signal the end of
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* XML `CharData` content.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#dt-chardata
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*/
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exports.endCharData = /<|&|]]>/;
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/**
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* Mapping of predefined entity names to their replacement values.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent
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*/
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exports.predefinedEntities = Object.freeze(Object.assign(Object.create(null), {
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amp: '&',
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apos: "'",
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gt: '>',
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lt: '<',
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quot: '"',
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}));
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/**
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* Returns `true` if _char_ is an XML `NameChar`, `false` if it isn't.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#NT-NameChar
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*/
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function isNameChar(char) {
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let cp = char.codePointAt(0);
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// Including the most common NameStartChars here improves performance
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// slightly.
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return (cp >= 0x61 && cp <= 0x7A) // a-z
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|| (cp >= 0x41 && cp <= 0x5A) // A-Z
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|| (cp >= 0x30 && cp <= 0x39) // 0-9
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|| cp === 0x2D // -
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|| cp === 0x2E // .
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|| cp === 0xB7
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|| (cp >= 0x300 && cp <= 0x36F)
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|| cp === 0x203F
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|| cp === 0x2040
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|| isNameStartChar(char, cp);
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}
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/**
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* Returns `true` if _char_ is an XML `NameStartChar`, `false` if it isn't.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#NT-NameStartChar
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*/
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function isNameStartChar(char, cp = char.codePointAt(0)) {
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return (cp >= 0x61 && cp <= 0x7A) // a-z
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|| (cp >= 0x41 && cp <= 0x5A) // A-Z
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|| cp === 0x3A // :
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|| cp === 0x5F // _
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|| (cp >= 0xC0 && cp <= 0xD6)
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|| (cp >= 0xD8 && cp <= 0xF6)
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|| (cp >= 0xF8 && cp <= 0x2FF)
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|| (cp >= 0x370 && cp <= 0x37D)
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|| (cp >= 0x37F && cp <= 0x1FFF)
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|| cp === 0x200C
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|| cp === 0x200D
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|| (cp >= 0x2070 && cp <= 0x218F)
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|| (cp >= 0x2C00 && cp <= 0x2FEF)
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|| (cp >= 0x3001 && cp <= 0xD7FF)
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|| (cp >= 0xF900 && cp <= 0xFDCF)
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|| (cp >= 0xFDF0 && cp <= 0xFFFD)
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|| (cp >= 0x10000 && cp <= 0xEFFFF);
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}
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/**
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* Returns `true` if _char_ is a valid reference character (which may appear
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* between `&` and `;` in a reference), `false` otherwise.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-references
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*/
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function isReferenceChar(char) {
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return char === '#' || isNameChar(char);
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}
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/**
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* Returns `true` if _char_ is an XML whitespace character, `false` otherwise.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#white
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*/
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function isWhitespace(char) {
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let cp = char.codePointAt(0);
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return cp === 0x20
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|| cp === 0x9
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|| cp === 0xA
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|| cp === 0xD;
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}
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/**
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* Returns `true` if _codepoint_ is a valid XML `Char` code point, `false`
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* otherwise.
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*
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* @see https://www.w3.org/TR/2008/REC-xml-20081126/#NT-Char
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*/
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function isXmlCodePoint(cp) {
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return (cp >= 0x20 && cp <= 0xD7FF)
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|| cp === 0xA
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|| cp === 0x9
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|| cp === 0xD
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|| (cp >= 0xE000 && cp <= 0xFFFD)
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|| (cp >= 0x10000 && cp <= 0x10FFFF);
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}
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//# sourceMappingURL=syntax.js.map
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