jinja2ext.py 文件源码

def parse(self, parser):
        lineno = next(parser.stream).lineno

        next_token = parser.stream.look()
        # if there are parameters
        if next_token.type == "comma":
            args = [parser.parse_expression()]
            if parser.stream.skip_if('comma'):
                args.append(parser.parse_expression())
            else:
                raise TemplateSyntaxError("Missing Lorem Ipsum generator parameter: kind", lineno)

            if args[1].value not in self.GENERATORS:
                raise TemplateSyntaxError(
                    "Supported Lorem Ipsum generator kinds are: %s" % ", ".join(self.GENERATORS.keys()),
                    lineno
                )
        else:
            # if no parameters were supplied
            args = [nodes.Const(1), nodes.Const("paragraphs")]

        return nodes.Output(
            [self.call_method("_lipsum", args)],
            lineno=lineno
        )