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/**
 * Gutenberg void block comment compiler
 * Hydrates server-rendered compiled placeholders into real DOM near block comments.
 *
 * Contract (matches PHP WVCBlocks): full token = "";
 * wrapper id = fullToken with double quotes replaced by single quotes (then PHP esc_attr in HTML).
 */

function wvcBlockWrapperIdFromFullToken(fullToken) {
  return fullToken.replace(/"/g, "'");
}

function wvcBlockFullTokenFromCommentData(data) {
  return "";
}

function wvcBlockIsWpBlockCommentData(data) {
  return /^\s*\/?wp:\s*\S/.test(data || "");
}

function wvcBlockParseCommentMeta(data) {
  const raw = (data || "").trim();
  const isClosing = /^\/wp:\s*/.test(raw);
  const openingMatch = raw.match(/^wp:\s*([^\s/][^\s]*)/);
  const closingMatch = raw.match(/^\/wp:\s*([^\s/][^\s]*)/);
  const blockName = openingMatch ? openingMatch[1] : closingMatch ? closingMatch[1] : "";
  const isOpening = !isClosing && /^wp:\s*/.test(raw);
  const isVoid = isOpening && /\/\s*$/.test(raw);
  return {
    raw,
    blockName,
    isOpening,
    isClosing,
    isVoid,
  };
}

function wvcBlockFindUnusedStoreNode(wrapperId) {
  return document.querySelector(
    `wrapper[id="${CSS.escape(wrapperId)}"]:not([data-processed])`
  );
}

function wvcBlockTryFindWrapper(commentNode) {
  const raw = commentNode.data;
  const variants = [];
  if (raw != null && raw !== "") {
    variants.push(raw);
  }
  const trimmed = typeof raw === "string" ? raw.trim() : "";
  if (trimmed !== "" && trimmed !== raw) {
    variants.push(trimmed);
  }

for (const d of variants) {
    const full = wvcBlockFullTokenFromCommentData(d);
    const wid = wvcBlockWrapperIdFromFullToken(full);
    const store = wvcBlockFindUnusedStoreNode(wid);
    if (store) {
      return store;
    }
  }
  return null;
}

function wvcBlockFindMatchingClosingComment(openCommentNode) {
  const openMeta = wvcBlockParseCommentMeta(openCommentNode.data);
  if (!openMeta.isOpening || openMeta.isVoid || !openMeta.blockName) {
    return null;
  }

const walker = document.createTreeWalker(
    document.body,
    NodeFilter.SHOW_COMMENT,
    null,
    false
  );
  walker.currentNode = openCommentNode;

function wvcBlockReplacePairedRange(openCommentNode, closeCommentNode, renderedNode) {
  if (!openCommentNode.parentNode || !closeCommentNode.parentNode) {
    return false;
  }
  const parent = openCommentNode.parentNode;
  if (parent !== closeCommentNode.parentNode) {
    return false;
  }

parent.insertBefore(renderedNode, openCommentNode);

let node = openCommentNode;
  while (node) {
    const next = node.nextSibling;
    parent.removeChild(node);
    if (node === closeCommentNode) {
      break;
    }
    node = next;
  }
  return true;
}

const storeNode = wvcBlockTryFindWrapper(commentNode);
  if (!storeNode) {
    return false;
  }

const renderedNode = wvcBlockMaterializeNode(storeNode);
  if (!renderedNode) {
    return false;
  }

storeNode.setAttribute("data-processed", "true");
  if (storeNode.parentNode) {
    storeNode.parentNode.removeChild(storeNode);
  }

if (!meta.isVoid) {
    const closeCommentNode = wvcBlockFindMatchingClosingComment(commentNode);
    if (closeCommentNode) {
      return wvcBlockReplacePairedRange(commentNode, closeCommentNode, renderedNode);
    }
  }

const parent = commentNode.parentNode;
  parent.insertBefore(renderedNode, commentNode);
  parent.removeChild(commentNode);
  return true;
}

function wvcBlockProcessCommentsAfterRender() {
  setTimeout(() => {
    const walker = document.createTreeWalker(
      document.body,
      NodeFilter.SHOW_COMMENT,
      null,
      false
    );

let processedCount = 0;
    comments.forEach((c) => {
      if (wvcBlockProcessOneComment(c)) {
        processedCount += 1;
      }
    });

// Do not poll forever; subsequent runs are driven by MutationObserver.
  }, 100);
}

if (document.readyState === "loading") {
  document.addEventListener("DOMContentLoaded", wvcBlockProcessCommentsAfterRender);
} else {
  wvcBlockProcessCommentsAfterRender();
}

if (shouldProcess) {
    setTimeout(wvcBlockProcessCommentsAfterRender, 100);
  }
});

wvcBlockMutationObserver.observe(document.body, {
  childList: true,
  subtree: true,
});

[+] ..
[-] short-code.compiler.js [edit]
[-] wvc.js [edit]
[-] index.umd.js [edit]
[-] wvc-editor.js [edit]
[-] block.compiler.js [edit]
[-] content.compiler.js [edit]