Re: Fusion-ifying proto parse trees

Eric Niebler wrote:
> dan marsden wrote:
> > > Joel de Guzman wrote:
> > > > Given a node, you can know the Nth type from the traversal, right?
> > > > Given a node, you can get the Nth element by walking the tree, right?
> > > >
> > > > IOTW, this is possible:
> > > >    get_element_type<Node, N>::type
> > > >
> > > > and so is this:
> > > >    get_element<N>(node)
> > > >
> > > > Yes, No?
> > > >
> > > > If yes, then you can keep a reference to the root node
> > > > plus an N index, to represent your iterator.
> >
> > Attached is a crude implementation of a get_element like facility for 
> > trees of unary_op and binary_op nodes
> > that I knocked together to get some familiarity with proto (v cool btw). 
>
> Thanks!

Yeah, thanks too, Dan!

Regards,
--
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net



-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642