def METHOD_NAME(ast: _LEX_STREAM, filename: str) -> IR:
    """Parse the tokenized list into Meson AST.
    :param ast: An iterable of Tokens
    :param filename: The name of the file being parsed
    :return: An mparser Node to be used as a conditional
    """
    ast_i: _LEX_STREAM_AH = lookahead(iter(ast))
    return _parse(ast_i, filename)