Re: [Caml-list] F# lightweight syntax for Ocaml with camlp4 - possible?

["Nicolas Pouillard" <nicolas.pouillard@gmail.com>]

On 5/8/07, Chris King <colanderman@gmail.com> wrote:
> On 5/7/07, Dmitry Bely <dmitry.bely@gmail.com> wrote:
> > Could the same idea be implemented for Ocaml with Camlp4? Can it use
> > an indentation level while parsing?
>
> It has been... http://people.csail.mit.edu/mikelin/ocaml+twt/
> But it doesn't use camlp4 (since camlp4 can't modify the lexer to
> handle tabs specially).

This is somewhat different in the new version of Camlp4 even if one
cannot dynamically extend the default lexer.

1/ One can now change a Camlp4 module by another, since the
implementation is functorized.

2/ The default lexer now keeps all bits of the input including layout
information.

3/ One can setup a custom token filter, that can handle the
indentation, and then drop the layout information (The default filter
drops layout information).

Best regards,

-- 
Nicolas Pouillard