camlp4 - can you customize the lexer?

camlp4 - can you customize the lexer?

[Richard Jones]

The Camlp4 wiki contains an intriguing line "Connecting your own
Lexer.", but no link or information.  I want to modify the OCaml lexer
to add a syntax for integer literals of my own type.  Can this be
done?  How?

Rich.

-- 
Richard Jones
Red Hat

Re: [Caml-list] camlp4 - can you customize the lexer?

[Jon Harrop]

On Friday 09 May 2008 10:40:36 Richard Jones wrote:
> The Camlp4 wiki contains an intriguing line "Connecting your own
> Lexer.", but no link or information.  I want to modify the OCaml lexer
> to add a syntax for integer literals of my own type.  Can this be
> done?  How?

I have asked this question periodically for about a year now. I believe the 
answer is "no".

-- 
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com/products/?e

Re: [Caml-list] camlp4 - can you customize the lexer?

[Nicolas Pouillard]

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Excerpts from Richard Jones's message of Fri May 09 11:40:36 +0200 2008:
> 
> The Camlp4 wiki contains an intriguing line "Connecting your own
> Lexer.", but no link or information.  I want to modify the OCaml lexer
> to add a syntax for integer literals of my own type.  Can this be
> done?  How?

Since  Camlp4,  is  now  a  lot  more  modular.  This can be done by providing
*another*  Lexer  module  with  a  compatible signature. Then one create a new
Camlp4.PreCast module by copy/pasting and using the new Lexer module.
However the default lexer of Camlp4 is not extensible.

Best regards,

-- 
Nicolas Pouillard aka Ertai

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