This method yields TLObjects from a given .tl file.

    Note that the file is parsed completely before the function yields
    because references to other objects may appear later in the file.

def parse_tl(file_path, layer, methods=None, ignored_ids=CORE_TYPES):
    """
    This method yields TLObjects from a given .tl file.

    Note that the file is parsed completely before the function yields
    because references to other objects may appear later in the file.
    """
    method_info = {m.name: m for m in (methods or [])}
    obj_all = []
    obj_by_name = {}
    obj_by_type = collections.defaultdict(list)
    with file_path.open() as file:
        is_function = False
        for line in file:
            comment_index = line.find('//')
            if comment_index != -1:
                line = line[:comment_index]

            line = line.strip()
            if not line:
                continue

            match = re.match('---(\w+)---', line)
            if match:
                following_types = match.group(1)
                is_function = following_types == 'functions'
                continue

            try:
                result = _from_line(
                    line, is_function, method_info, layer=layer)

                if result.id in ignored_ids:
                    continue

                obj_all.append(result)
                if not result.is_function:
                    obj_by_name[result.fullname] = result
                    obj_by_type[result.result].append(result)
            except ValueError as e:
                if 'vector#1cb5c415' not in str(e):
                    raise

    # Once all objects have been parsed, replace the
    # string type from the arguments with references
    for obj in obj_all:
        if obj.id in AUTH_KEY_TYPES:
            for arg in obj.args:
                if arg.type == 'string':
                    arg.type = 'bytes'

        for arg in obj.args:
            arg.cls = obj_by_type.get(arg.type) or (
                [obj_by_name[arg.type]] if arg.type in obj_by_name else []
            )

    yield from obj_all