Hi,
I'm trying to learn how to write a Jinja2 extension. I managed to write it
but basically it intents to write a <div>Hello</div> with this code:
class BaseExtension(Extension):
>
> def parse(self, parser):
> stream = parser.stream
> tag = stream.next()
> # get arguments
> args = []
> kwargs = []
> while not stream.current.test_any('block_end'):
> if args or kwargs:
> stream.expect('comma')
> if stream.current.test('name') and
> stream.look().test('assign'):
> key = nodes.Const(stream.next().value)
> stream.skip()
> value = parser.parse_expression()
> kwargs.append(nodes.Pair(key, value, lineno=key.lineno))
> else:
> args.append(parser.parse_expression())
>
> def make_call_node(*kw):
> return self.call_method('_call', args=[
> nodes.List(args),
> nodes.Dict(kwargs),
> ], kwargs=kw)
>
> return nodes.Output([make_call_node()]).set_lineno(tag.lineno)
> #eturn nodes.CallBlock([make_call_node()]).set_lineno(tag.lineno)
>
> class SnippetExtension(BaseExtension):
>
> tags = set(['snippet'])
>
> @classmethod
> def _call(cls, args, kwargs):
> assert len(args) == 1
> *return '<div>Hello</div>'*
>
The extension work ok but in the template I get:
<div>Carlos</div>
>
Any idea what I am doing wrong?
Thanks.
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