activity_tags.py 文件源码

def handle_token(cls, parser, token):
        """
        Class method to parse and return a Node.
        """
        bits = token.split_contents()
        args_count = len(bits) - 1
        if args_count >= 2 and bits[-2] == 'as':
            as_var = bits[-1]
            args_count -= 2
        else:
            as_var = None
        if args_count != cls.args_count:
            arg_list = ' '.join(['[arg]' * cls.args_count])
            raise TemplateSyntaxError("Accepted formats {%% %(tagname)s "
                "%(args)s %%} or {%% %(tagname)s %(args)s as [var] %%}" %
                {'tagname': bits[0], 'args': arg_list})
        args = [parser.compile_filter(token) for token in
            bits[1:args_count + 1]]
        return cls(args, varname=as_var)