Hi,
 
I am trying to build a mpl::vector from an expression like
(string(),ClassA(),ClassB())
To get a mpl::vector<string,ClassA,ClassB>
 
With string, ClassA and ClassB being not enough under control to protoify them with a proto::extends.
 
I naively tried the following grammar
 
struct BuildFlags
: proto::or_<
proto::when <
proto::terminal<proto::_>,
boost::mpl::vector<proto::_child>()
>,
proto::when <
proto::comma<BuildFlags,BuildFlags >,
boost::mpl::push_back<
BuildFlags(proto::_left),proto::_right>()
>
>
{};
 
Or some typeof variants of it, with no more success and I start wondering if I got on a rocky way leading me to unavoidable doom.
Is there a way to do this or I should give up the idea?
 
Thanks,
 
Christophe

---

Share your memories online with anyone you want anyone you want.