Camlp4 lexers (>= 3.10)

Camlp4 lexers (>= 3.10)

[O'Leary, John W]

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Does anyone have an example that would show me how to connect my own
lexer to a Camlp4 parser?

 

I've scoured the wiki (http://brion.inria.fr/gallium/index.php/Camlp4)
but all the examples there use the ocaml lexer.

 

Thanks,

--John O'Leary


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Re: [Caml-list] Camlp4 lexers (>= 3.10)

[Alain Frisch]

O'Leary, John W wrote:
> Does anyone have an example that would show me how to connect my own
> lexer to a Camlp4 parser?
>
> I’ve scoured the wiki (http://brion.inria.fr/gallium/index.php/Camlp4)
> but all the examples there use the ocaml lexer.

CDuce's parser uses a lexer generated by ulex:

http://www.cduce.org/cgi-bin/viewcvs.cgi/cduce/trunk/parser/

(Parser and Ulexer modules)


-- Alain

Re: [Caml-list] Camlp4 lexers (>= 3.10)

[Gordon Henriksen]

On May 2, 2008, at 16:15, O'Leary, John W wrote:

> Does anyone have an example that would show me how to connect my own  
> lexer to a Camlp4 parser?
>
> I’ve scoured the wiki (http://brion.inria.fr/gallium/index.php/ 
> Camlp4) but all the examples there use the ocaml lexer.


There's one here:

http://llvm.org/docs/tutorial/OCamlLangImpl1.html

— Gordon

Re: [Caml-list] Camlp4 lexers (>= 3.10)

[Gabriel Kerneis]

On Fri, May 02, 2008 at 01:15:36PM -0700, O'Leary, John W wrote:
> Does anyone have an example that would show me how to connect my own
> lexer to a Camlp4 parser?

You can have a look at Ocsigen's xmlp4 module (allowing you to type
xhtml code in quotations and get an AST):

http://ocsigen.org/darcsweb/?r=ocsigen.current;a=tree;f=/xmlp4/newocaml

Especially the files xmllexer.mll (using ocamlex, based on lexer.mll
from ocaml source) and xhtmlparser.ml (written in revised syntax). 

The interresting parts are at the end of both files (look at functions
Xmllexer.from_string = Xhtmlparser.parse, Xhtmlparser.xml_exp).

Regards,
-- 
Gabriel Kerneis