I have used alex / happy a few times
without too many problems I believe happy
now contains yacc style information
for operator precidence :-).
If I were you I would use
Happy + Alex for the scanner/parser.
but use asdl for the definition of the
data structures.
(There is a link to this
from the haskell.org tools page)
I recently used all three on a similar
translation project.
It was initially written all in Haskell
but there was a section which caused a bottleneck
[An XML parser which had to read files > 20Mb]
which I was able to hand-craft in C lex/yacc and slot in
using ASDL.
Using ASDL meant that an escape-route was available
when haskell proved to be too slow and also other
folks (non haskellers) could write sections as long as
the interface was defined.
For the most part however haskell was fine and it was only
the size of the files being read that crippled me really.
Chris
> -----Original Message-----
> From: Dean Herington [mailto:[EMAIL PROTECTED]]
> Sent: 06 September 2000 04:26
> To: [EMAIL PROTECTED]
> Subject: student compiler in Haskell
>
>
> I'm hoping to write the compiler for my graduate compilers course in
> Haskell, using Hugs on Windows NT. I find several choices
> for scanner and
> parser generators at http://www.haskell.org/libraries/. I
> would love to
> hear opinions about the overall suitability (usability, robustness,
> compliance with Haskell 98, etc.) of these tools (and any
> others that you
> consider useful) for such a project.
>
> Thanks in advance.
>
> Dean Herington
> Department of Computer Science
> University of North Carolina at Chapel Hill
> [EMAIL PROTECTED]
>
>
>
