Method parse

website/public/wasm/web-tree-sitter.js:3245–3297

* Parse a slice of UTF8 text. * * @param {string | ParseCallback} callback - The UTF8-encoded text to parse or a callback function. * * @param {Tree | null} [oldTree] - A previous syntax tree parsed from the same document. If the text of the * document has changed since `oldTree` wa

(callback, oldTree, options)

   *  - The progress callback returned true.
   */
  parse(callback, oldTree, options) {
    if (typeof callback === "string") {
      C.currentParseCallback = (index) => callback.slice(index);
    } else if (typeof callback === "function") {
      C.currentParseCallback = callback;
    } else {
      throw new Error("Argument must be a string or a function");
    }
    if (options?.progressCallback) {
      C.currentProgressCallback = options.progressCallback;
    } else {
      C.currentProgressCallback = null;
    }
    if (this.logCallback) {
      C.currentLogCallback = this.logCallback;
      C._ts_parser_enable_logger_wasm(this[0], 1);
    } else {
      C.currentLogCallback = null;
      C._ts_parser_enable_logger_wasm(this[0], 0);
    }
    let rangeCount = 0;
    let rangeAddress = 0;
    if (options?.includedRanges) {
      rangeCount = options.includedRanges.length;
      rangeAddress = C._calloc(rangeCount, SIZE_OF_RANGE);
      let address = rangeAddress;
      for (let i2 = 0; i2 < rangeCount; i2++) {
        marshalRange(address, options.includedRanges[i2]);
        address += SIZE_OF_RANGE;
      }
    }
    const treeAddress = C._ts_parser_parse_wasm(
      this[0],
      this[1],
      oldTree ? oldTree[0] : 0,
      rangeAddress,
      rangeCount
    );
    if (!treeAddress) {
      C.currentParseCallback = null;
      C.currentLogCallback = null;
      C.currentProgressCallback = null;
      return null;
    }
    if (!this.language) {
      throw new Error("Parser must have a language to parse");
    }
    const result = new Tree(INTERNAL, treeAddress, this.language, C.currentParseCallback);
    C.currentParseCallback = null;
    C.currentLogCallback = null;
    C.currentProgressCallback = null;
    return result;
  }
  /**
   * Instruct the parser to start the next parse from the beginning.
   *