this["wp"] = this["wp"] || {}; this["wp"]["blockSerializationDefaultParser"] =

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/***/ 258:

/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";

__webpack_require__.r(__webpack_exports__);

/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "parse", function() { return parse; });

/* harmony import */ var _babel_runtime_helpers_esm_slicedToArray__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(28);

var document;

var offset;

var output;

var stack;

/**

 * Matches block comment delimiters

 *

 * While most of this pattern is straightforward the attribute parsing

 * incorporates a tricks to make sure we don't choke on specific input

 *

 *  - since JavaScript has no possessive quantifier or atomic grouping

 *    we are emulating it with a trick

 *

 *    we want a possessive quantifier or atomic group to prevent backtracking

 *    on the `}`s should we fail to match the remainder of the pattern

 *

 *    we can emulate this with a positive lookahead and back reference

 *    (a++)*c === ((?=(a+))\1)*c

 *

 *    let's examine an example:

 *      - /(a+)*c/.test('aaaaaaaaaaaaad') fails after over 49,000 steps

 *      - /(a++)*c/.test('aaaaaaaaaaaaad') fails after 85 steps

 *      - /(?>a+)*c/.test('aaaaaaaaaaaaad') fails after 126 steps

 *

 *    this is because the possessive `++` and the atomic group `(?>)`

 *    tell the engine that all those `a`s belong together as a single group

 *    and so it won't split it up when stepping backwards to try and match

 *

 *    if we use /((?=(a+))\1)*c/ then we get the same behavior as the atomic group

 *    or possessive and prevent the backtracking because the `a+` is matched but

 *    not captured. thus, we find the long string of `a`s and remember it, then

 *    reference it as a whole unit inside our pattern

 *

 *    @cite http://instanceof.me/post/52245507631/regex-emulate-atomic-grouping-with-lookahead

 *    @cite http://blog.stevenlevithan.com/archives/mimic-atomic-groups

 *    @cite https://javascript.info/regexp-infinite-backtracking-problem

 *

 *    once browsers reliably support atomic grouping or possessive

 *    quantifiers natively we should remove this trick and simplify

 *

 * @type RegExp

 *

 * @since 3.8.0

 * @since 4.6.1 added optimization to prevent backtracking on attribute parsing

 */

var tokenizer = /<!--\s+(\/)?wp:([a-z][a-z0-9_-]*\/)?([a-z][a-z0-9_-]*)\s+({(?:(?=([^}]+|}+(?=})|(?!}\s+\/?-->)[^])*)\5|[^]*?)}\s+)?(\/)?-->/g;

function Block(blockName, attrs, innerBlocks, innerHTML, innerContent) {

  return {

    blockName: blockName,

    attrs: attrs,

    innerBlocks: innerBlocks,

    innerHTML: innerHTML,

    innerContent: innerContent

  };

}

function Freeform(innerHTML) {

  return Block(null, {}, [], innerHTML, [innerHTML]);

}

function Frame(block, tokenStart, tokenLength, prevOffset, leadingHtmlStart) {

  return {

    block: block,

    tokenStart: tokenStart,

    tokenLength: tokenLength,

    prevOffset: prevOffset || tokenStart + tokenLength,

    leadingHtmlStart: leadingHtmlStart

  };

}

/**

 * Parser function, that converts input HTML into a block based structure.

 *

 * @param {string} doc The HTML document to parse.

 *

 * @example

 * Input post:

 * ```html

 * <!-- wp:columns {"columns":3} -->

 * <div class="wp-block-columns has-3-columns"><!-- wp:column -->

 * <div class="wp-block-column"><!-- wp:paragraph -->

 * <p>Left</p>

 * <!-- /wp:paragraph --></div>

 * <!-- /wp:column -->

 *

 * <!-- wp:column -->

 * <div class="wp-block-column"><!-- wp:paragraph -->

 * <p><strong>Middle</strong></p>

 * <!-- /wp:paragraph --></div>

 * <!-- /wp:column -->

 *

 * <!-- wp:column -->

 * <div class="wp-block-column"></div>

 * <!-- /wp:column --></div>

 * <!-- /wp:columns -->

 * ```

 *

 * Parsing code:

 * ```js

 * import { parse } from '@wordpress/block-serialization-default-parser';

 *

 * parse( post ) === [

 *     {

 *         blockName: "core/columns",

 *         attrs: {

 *             columns: 3

 *         },

 *         innerBlocks: [

 *             {

 *                 blockName: "core/column",

 *                 attrs: null,

 *                 innerBlocks: [

 *                     {

 *                         blockName: "core/paragraph",

 *                         attrs: null,

 *                         innerBlocks: [],

 *                         innerHTML: "\n<p>Left</p>\n"

 *                     }

 *                 ],

 *                 innerHTML: '\n<div class="wp-block-column"></div>\n'

 *             },

 *             {

 *                 blockName: "core/column",

 *                 attrs: null,

 *                 innerBlocks: [

 *                     {

 *                         blockName: "core/paragraph",

 *                         attrs: null,

 *                         innerBlocks: [],

 *                         innerHTML: "\n<p><strong>Middle</strong></p>\n"

 *                     }

 *                 ],

 *                 innerHTML: '\n<div class="wp-block-column"></div>\n'

 *             },

 *             {

 *                 blockName: "core/column",

 *                 attrs: null,

 *                 innerBlocks: [],

 *                 innerHTML: '\n<div class="wp-block-column"></div>\n'

 *             }

 *         ],

 *         innerHTML: '\n<div class="wp-block-columns has-3-columns">\n\n\n\n</div>\n'

 *     }

 * ];

 * ```

 * @return {Array} A block-based representation of the input HTML.

 */

var parse = function parse(doc) {

  document = doc;

  offset = 0;

  output = [];

  stack = [];

  tokenizer.lastIndex = 0;

  do {// twiddle our thumbs

  } while (proceed());

  return output;

};

function proceed() {

  var next = nextToken();

  var _next = Object(_babel_runtime_helpers_esm_slicedToArray__WEBPACK_IMPORTED_MODULE_0__[/* default */ "a"])(next, 5),

      tokenType = _next[0],

      blockName = _next[1],

      attrs = _next[2],

      startOffset = _next[3],

      tokenLength = _next[4];

  var stackDepth = stack.length; // we may have some HTML soup before the next block

  var leadingHtmlStart = startOffset > offset ? offset : null;

  switch (tokenType) {

    case 'no-more-tokens':

      // if not in a block then flush output

      if (0 === stackDepth) {

        addFreeform();

        return false;

      } // Otherwise we have a problem

      // This is an error

      // we have options

      //  - treat it all as freeform text

      //  - assume an implicit closer (easiest when not nesting)

      // for the easy case we'll assume an implicit closer

      if (1 === stackDepth) {

        addBlockFromStack();

        return false;

      } // for the nested case where it's more difficult we'll

      // have to assume that multiple closers are missing

      // and so we'll collapse the whole stack piecewise

      while (0 < stack.length) {

        addBlockFromStack();

      }

      return false;

    case 'void-block':

      // easy case is if we stumbled upon a void block

      // in the top-level of the document

      if (0 === stackDepth) {

        if (null !== leadingHtmlStart) {

          output.push(Freeform(document.substr(leadingHtmlStart, startOffset - leadingHtmlStart)));

        }

        output.push(Block(blockName, attrs, [], '', []));

        offset = startOffset + tokenLength;

        return true;

      } // otherwise we found an inner block

      addInnerBlock(Block(blockName, attrs, [], '', []), startOffset, tokenLength);

      offset = startOffset + tokenLength;

      return true;

    case 'block-opener':

      // track all newly-opened blocks on the stack

      stack.push(Frame(Block(blockName, attrs, [], '', []), startOffset, tokenLength, startOffset + tokenLength, leadingHtmlStart));

      offset = startOffset + tokenLength;

      return true;

    case 'block-closer':

      // if we're missing an opener we're in trouble

      // This is an error

      if (0 === stackDepth) {

        // we have options

        //  - assume an implicit opener

        //  - assume _this_ is the opener

        //  - give up and close out the document

        addFreeform();

        return false;

      } // if we're not nesting then this is easy - close the block

      if (1 === stackDepth) {

        addBlockFromStack(startOffset);

        offset = startOffset + tokenLength;

        return true;

      } // otherwise we're nested and we have to close out the current

      // block and add it as a innerBlock to the parent

      var stackTop = stack.pop();

      var html = document.substr(stackTop.prevOffset, startOffset - stackTop.prevOffset);

      stackTop.block.innerHTML += html;

      stackTop.block.innerContent.push(html);

      stackTop.prevOffset = startOffset + tokenLength;

      addInnerBlock(stackTop.block, stackTop.tokenStart, stackTop.tokenLength, startOffset + tokenLength);

      offset = startOffset + tokenLength;

      return true;

    default:

      // This is an error

      addFreeform();

      return false;

  }

}

/**

 * Parse JSON if valid, otherwise return null

 *

 * Note that JSON coming from the block comment

 * delimiters is constrained to be an object

 * and cannot be things like `true` or `null`

 *

 * @param {string} input JSON input string to parse

 * @return {Object|null} parsed JSON if valid

 */

function parseJSON(input) {

  try {

    return JSON.parse(input);

  } catch (e) {

    return null;

  }

}

function nextToken() {

  // aye the magic

  // we're using a single RegExp to tokenize the block comment delimiters

  // we're also using a trick here because the only difference between a

  // block opener and a block closer is the leading `/` before `wp:` (and

  // a closer has no attributes). we can trap them both and process the

  // match back in Javascript to see which one it was.

  var matches = tokenizer.exec(document); // we have no more tokens

  if (null === matches) {

    return ['no-more-tokens'];

  }

  var startedAt = matches.index;

  var _matches = Object(_babel_runtime_helpers_esm_slicedToArray__WEBPACK_IMPORTED_MODULE_0__[/* default */ "a"])(matches, 7),

      match = _matches[0],