node_modules/xregexp/lib/addons/unicode-base.js

"use strict";

var _interopRequireDefault = require("@babel/runtime-corejs3/helpers/interopRequireDefault");

var _Object$defineProperty = require("@babel/runtime-corejs3/core-js-stable/object/define-property");

_Object$defineProperty(exports, "__esModule", {
  value: true
});

exports.default = void 0;

var _getIterator2 = _interopRequireDefault(require("@babel/runtime-corejs3/core-js/get-iterator"));

var _includes = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/includes"));

var _concat = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/concat"));

var _forEach = _interopRequireDefault(require("@babel/runtime-corejs3/core-js-stable/instance/for-each"));

/*!
 * XRegExp Unicode Base 4.3.0
 * <xregexp.com>
 * Steven Levithan (c) 2008-present MIT License
 */
var _default = function _default(XRegExp) {
  /**
   * Adds base support for Unicode matching:
   * - Adds syntax `\p{..}` for matching Unicode tokens. Tokens can be inverted using `\P{..}` or
   *   `\p{^..}`. Token names ignore case, spaces, hyphens, and underscores. You can omit the
   *   braces for token names that are a single letter (e.g. `\pL` or `PL`).
   * - Adds flag A (astral), which enables 21-bit Unicode support.
   * - Adds the `XRegExp.addUnicodeData` method used by other addons to provide character data.
   *
   * Unicode Base relies on externally provided Unicode character data. Official addons are
   * available to provide data for Unicode categories, scripts, blocks, and properties.
   *
   * @requires XRegExp
   */
  // ==--------------------------==
  // Private stuff
  // ==--------------------------==
  // Storage for Unicode data
  var unicode = {}; // Reuse utils

  var dec = XRegExp._dec;
  var hex = XRegExp._hex;
  var pad4 = XRegExp._pad4; // Generates a token lookup name: lowercase, with hyphens, spaces, and underscores removed

  function normalize(name) {
    return name.replace(/[- _]+/g, '').toLowerCase();
  } // Gets the decimal code of a literal code unit, \xHH, \uHHHH, or a backslash-escaped literal


  function charCode(chr) {
    var esc = /^\\[xu](.+)/.exec(chr);
    return esc ? dec(esc[1]) : chr.charCodeAt(chr[0] === '\\' ? 1 : 0);
  } // Inverts a list of ordered BMP characters and ranges


  function invertBmp(range) {
    var output = '';
    var lastEnd = -1;
    (0, _forEach.default)(XRegExp).call(XRegExp, range, /(\\x..|\\u....|\\?[\s\S])(?:-(\\x..|\\u....|\\?[\s\S]))?/, function (m) {
      var start = charCode(m[1]);

      if (start > lastEnd + 1) {
        output += "\\u".concat(pad4(hex(lastEnd + 1)));

        if (start > lastEnd + 2) {
          output += "-\\u".concat(pad4(hex(start - 1)));
        }
      }

      lastEnd = charCode(m[2] || m[1]);
    });

    if (lastEnd < 0xFFFF) {
      output += "\\u".concat(pad4(hex(lastEnd + 1)));

      if (lastEnd < 0xFFFE) {
        output += '-\\uFFFF';
      }
    }

    return output;
  } // Generates an inverted BMP range on first use


  function cacheInvertedBmp(slug) {
    var prop = 'b!';
    return unicode[slug][prop] || (unicode[slug][prop] = invertBmp(unicode[slug].bmp));
  } // Combines and optionally negates BMP and astral data


  function buildAstral(slug, isNegated) {
    var item = unicode[slug];
    var combined = '';

    if (item.bmp && !item.isBmpLast) {
      var _context;

      combined = (0, _concat.default)(_context = "[".concat(item.bmp, "]")).call(_context, item.astral ? '|' : '');
    }

    if (item.astral) {
      combined += item.astral;
    }

    if (item.isBmpLast && item.bmp) {
      var _context2;

      combined += (0, _concat.default)(_context2 = "".concat(item.astral ? '|' : '', "[")).call(_context2, item.bmp, "]");
    } // Astral Unicode tokens always match a code point, never a code unit


    return isNegated ? "(?:(?!".concat(combined, ")(?:[\uD800-\uDBFF][\uDC00-\uDFFF]|[\0-\uFFFF]))") : "(?:".concat(combined, ")");
  } // Builds a complete astral pattern on first use


  function cacheAstral(slug, isNegated) {
    var prop = isNegated ? 'a!' : 'a=';
    return unicode[slug][prop] || (unicode[slug][prop] = buildAstral(slug, isNegated));
  } // ==--------------------------==
  // Core functionality
  // ==--------------------------==

  /*
   * Add astral mode (flag A) and Unicode token syntax: `\p{..}`, `\P{..}`, `\p{^..}`, `\pC`.
   */


  XRegExp.addToken( // Use `*` instead of `+` to avoid capturing `^` as the token name in `\p{^}`
  /\\([pP])(?:{(\^?)([^}]*)}|([A-Za-z]))/, function (match, scope, flags) {
    var ERR_DOUBLE_NEG = 'Invalid double negation ';
    var ERR_UNKNOWN_NAME = 'Unknown Unicode token ';
    var ERR_UNKNOWN_REF = 'Unicode token missing data ';
    var ERR_ASTRAL_ONLY = 'Astral mode required for Unicode token ';
    var ERR_ASTRAL_IN_CLASS = 'Astral mode does not support Unicode tokens within character classes'; // Negated via \P{..} or \p{^..}

    var isNegated = match[1] === 'P' || !!match[2]; // Switch from BMP (0-FFFF) to astral (0-10FFFF) mode via flag A

    var isAstralMode = (0, _includes.default)(flags).call(flags, 'A'); // Token lookup name. Check `[4]` first to avoid passing `undefined` via `\p{}`

    var slug = normalize(match[4] || match[3]); // Token data object

    var item = unicode[slug];

    if (match[1] === 'P' && match[2]) {
      throw new SyntaxError(ERR_DOUBLE_NEG + match[0]);
    }

    if (!unicode.hasOwnProperty(slug)) {
      throw new SyntaxError(ERR_UNKNOWN_NAME + match[0]);
    } // Switch to the negated form of the referenced Unicode token


    if (item.inverseOf) {
      slug = normalize(item.inverseOf);

      if (!unicode.hasOwnProperty(slug)) {
        var _context3;

        throw new ReferenceError((0, _concat.default)(_context3 = "".concat(ERR_UNKNOWN_REF + match[0], " -> ")).call(_context3, item.inverseOf));
      }

      item = unicode[slug];
      isNegated = !isNegated;
    }

    if (!(item.bmp || isAstralMode)) {
      throw new SyntaxError(ERR_ASTRAL_ONLY + match[0]);
    }

    if (isAstralMode) {
      if (scope === 'class') {
        throw new SyntaxError(ERR_ASTRAL_IN_CLASS);
      }

      return cacheAstral(slug, isNegated);
    }

    return scope === 'class' ? isNegated ? cacheInvertedBmp(slug) : item.bmp : "".concat((isNegated ? '[^' : '[') + item.bmp, "]");
  }, {
    scope: 'all',
    optionalFlags: 'A',
    leadChar: '\\'
  });
  /**
   * Adds to the list of Unicode tokens that XRegExp regexes can match via `\p` or `\P`.
   *
   * @memberOf XRegExp
   * @param {Array} data Objects with named character ranges. Each object may have properties
   *   `name`, `alias`, `isBmpLast`, `inverseOf`, `bmp`, and `astral`. All but `name` are
   *   optional, although one of `bmp` or `astral` is required (unless `inverseOf` is set). If
   *   `astral` is absent, the `bmp` data is used for BMP and astral modes. If `bmp` is absent,
   *   the name errors in BMP mode but works in astral mode. If both `bmp` and `astral` are
   *   provided, the `bmp` data only is used in BMP mode, and the combination of `bmp` and
   *   `astral` data is used in astral mode. `isBmpLast` is needed when a token matches orphan
   *   high surrogates *and* uses surrogate pairs to match astral code points. The `bmp` and
   *   `astral` data should be a combination of literal characters and `\xHH` or `\uHHHH` escape
   *   sequences, with hyphens to create ranges. Any regex metacharacters in the data should be
   *   escaped, apart from range-creating hyphens. The `astral` data can additionally use
   *   character classes and alternation, and should use surrogate pairs to represent astral code
   *   points. `inverseOf` can be used to avoid duplicating character data if a Unicode token is
   *   defined as the exact inverse of another token.
   * @example
   *
   * // Basic use
   * XRegExp.addUnicodeData([{
   *   name: 'XDigit',
   *   alias: 'Hexadecimal',
   *   bmp: '0-9A-Fa-f'
   * }]);
   * XRegExp('\\p{XDigit}:\\p{Hexadecimal}+').test('0:3D'); // -> true
   */

  XRegExp.addUnicodeData = function (data) {
    var ERR_NO_NAME = 'Unicode token requires name';
    var ERR_NO_DATA = 'Unicode token has no character data ';
    var _iteratorNormalCompletion = true;
    var _didIteratorError = false;
    var _iteratorError = undefined;

    try {
      for (var _iterator = (0, _getIterator2.default)(data), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
        var item = _step.value;

        if (!item.name) {
          throw new Error(ERR_NO_NAME);
        }

        if (!(item.inverseOf || item.bmp || item.astral)) {
          throw new Error(ERR_NO_DATA + item.name);
        }

        unicode[normalize(item.name)] = item;

        if (item.alias) {
          unicode[normalize(item.alias)] = item;
        }
      } // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and
      // flags might now produce different results

    } catch (err) {
      _didIteratorError = true;
      _iteratorError = err;
    } finally {
      try {
        if (!_iteratorNormalCompletion && _iterator.return != null) {
          _iterator.return();
        }
      } finally {
        if (_didIteratorError) {
          throw _iteratorError;
        }
      }
    }

    XRegExp.cache.flush('patterns');
  };
  /**
   * @ignore
   *
   * Return a reference to the internal Unicode definition structure for the given Unicode
   * Property if the given name is a legal Unicode Property for use in XRegExp `\p` or `\P` regex
   * constructs.
   *
   * @memberOf XRegExp
   * @param {String} name Name by which the Unicode Property may be recognized (case-insensitive),
   *   e.g. `'N'` or `'Number'`. The given name is matched against all registered Unicode
   *   Properties and Property Aliases.
   * @returns {Object} Reference to definition structure when the name matches a Unicode Property.
   *
   * @note
   * For more info on Unicode Properties, see also http://unicode.org/reports/tr18/#Categories.
   *
   * @note
   * This method is *not* part of the officially documented API and may change or be removed in
   * the future. It is meant for userland code that wishes to reuse the (large) internal Unicode
   * structures set up by XRegExp.
   */


  XRegExp._getUnicodeProperty = function (name) {
    var slug = normalize(name);
    return unicode[slug];
  };
};

exports.default = _default;
module.exports = exports["default"];