Re: [Caml-list] Again on pattern matching and strings

[Alessandro Baretta <alex@baretta.com>]

Olivier Andrieu wrote:
>  Alessandro Baretta [Thursday 24 October 2002] :
>  > I write this message because I would like to know what kind 
>  > of complications would need to be added to the compiler to 
>  > make the above trick work.
> 
> None ! You can do it with camlp4 ! Unless I'm mistaken, what's
> described there :
> <http://caml.inria.fr/camlp4/tutorial/tutorial007.html#toc49> seems
> to apply to your case.

Ah, woe is me! I put ashes on my head. I do not understand 
the example, but yes, what I am asking for is essentially, a 
substitution of constant expressions for their alias in the 
syntax tree of the program. So yes: CamlP4 can do it. Since 
I don't want to reinvent the wheel, has anyone written--and 
documented for the syntax laymen--such an extension?

Alex

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