svoid tok_processMetaBlocks(LS tok, bool metaCodeAllowed) {
  for (int i = 0; i < 1000; i++) {
    int idx = findCodeTokens(tok, "meta", "{");
    if (idx < 0) break;
    if (!metaCodeAllowed) fail("Meta code not allowed");
    int j = findEndOfBracketPart(tok, idx+2);
    S code = joinSubList(tok, idx+4, j-2);
    print("Evaluating: " + code);
    S result = str(javaEval(code));
    replaceTokens_reTok(tok, idx, j+1, result);
  }
}