'use strict';

var index = require('../../../../micromark-util-character@1.2.0/node_modules/micromark-util-character/index.js');

/**
 * @typedef {import('micromark-util-types').Construct} Construct
 * @typedef {import('micromark-util-types').State} State
 * @typedef {import('micromark-util-types').TokenizeContext} TokenizeContext
 * @typedef {import('micromark-util-types').Tokenizer} Tokenizer
 */

/** @type {Construct} */
const characterEscape = {
  name: 'characterEscape',
  tokenize: tokenizeCharacterEscape
};

/**
 * @this {TokenizeContext}
 * @type {Tokenizer}
 */
function tokenizeCharacterEscape(effects, ok, nok) {
  return start

  /**
   * Start of character escape.
   *
   * ```markdown
   * > | a\*b
   *      ^
   * ```
   *
   * @type {State}
   */
  function start(code) {
    effects.enter('characterEscape');
    effects.enter('escapeMarker');
    effects.consume(code);
    effects.exit('escapeMarker');
    return inside
  }

  /**
   * After `\`, at punctuation.
   *
   * ```markdown
   * > | a\*b
   *       ^
   * ```
   *
   * @type {State}
   */
  function inside(code) {
    // ASCII punctuation.
    if (index.asciiPunctuation(code)) {
      effects.enter('characterEscapeValue');
      effects.consume(code);
      effects.exit('characterEscapeValue');
      effects.exit('characterEscape');
      return ok
    }
    return nok(code)
  }
}

exports.characterEscape = characterEscape;
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