* camlp4 - can you customize the lexer?
@ 2008-05-09 9:40 Richard Jones
2008-05-09 9:44 ` [Caml-list] " Jon Harrop
2008-05-10 20:38 ` Nicolas Pouillard
0 siblings, 2 replies; 3+ messages in thread
From: Richard Jones @ 2008-05-09 9:40 UTC (permalink / raw)
To: caml-list
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Caml-list] camlp4 - can you customize the lexer?
2008-05-09 9:40 camlp4 - can you customize the lexer? Richard Jones
@ 2008-05-09 9:44 ` Jon Harrop
2008-05-10 20:38 ` Nicolas Pouillard
1 sibling, 0 replies; 3+ messages in thread
From: Jon Harrop @ 2008-05-09 9:44 UTC (permalink / raw)
To: caml-list
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Caml-list] camlp4 - can you customize the lexer?
2008-05-09 9:40 camlp4 - can you customize the lexer? Richard Jones
2008-05-09 9:44 ` [Caml-list] " Jon Harrop
@ 2008-05-10 20:38 ` Nicolas Pouillard
1 sibling, 0 replies; 3+ messages in thread
From: Nicolas Pouillard @ 2008-05-10 20:38 UTC (permalink / raw)
To: Richard Jones; +Cc: caml-list
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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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