[Boost-users] [Proto] automaitcally convert class to proto literal

Subject: [Boost-users] [Proto] automaitcally convert class to proto literal
From: Daniel Oberhoff (danieloberhoff_at_[hidden])
Date: 2009-01-04 06:39:06

Hi,

I am stilly trying o get my array computation DSEL up and running. The 
basic grammar is in place, what I am fighting with is protfying my 
literals. I.e. I have an array class, and I want the following 
expression:

A(_i,_j)

to become a function(literal<Array>(A), index_placeholder<0>,  
index_placeholder<1>)

(simplified for readability, but the point should be clear).

it works like this:

proto::lit(A)(_i,_j)

so how can I automate the turning of my array instance into a literal? 
I have access to the class definition and I tried subclassing terminal 
and literal and the PROTO_EXTENDS macro. The former two had no effect 
on my problem, and the latter didn't compile ( I tried various 
combindations of Expr and Derived parameters).

Any ideas?

Daniel