On 10/25/2010 10:11 PM, [email protected] wrote:
>> or bundle it with the external transforms.
>> All you need is a nested when template. Does that help?
>
> A short example of this for my poor 7am self without coffee ;) ?
struct my_actions_with_state
{
// specializations to look up transforms
// using rules:
template<typename Rule>
struct when;
// any ol' state can go here:
int my_state;
};
Now, you can pass an instance of my_actions_with_state as a data
parameter. Proto will use the nested "when" template to find transforms,
and your transforms can use the my_state member at runtime to do whatever.
Does that help?
--
Eric Niebler
BoostPro Computing
http://www.boostpro.com
_______________________________________________
proto mailing list
[email protected]
http://lists.boost.org/mailman/listinfo.cgi/proto
