[Haskell-cafe] Re: Editors for Haskell

Simon Peyton-Jones simonpj at microsoft.com
Fri Jun 9 03:52:00 EDT 2006

GHC already carefully collects up almost all messages in a data type
called Message, so they are easy to re-direct.  However at the moment
they collected as strings (well as Pretty.Doc values actually) so they
have lost their structure.  

I believe that at one time I had a data type for error messages, but
there are so many of them and they change pretty often that it was quite
a pain having a centralised data type for this.  And at the time there
was lots of pain and virtually no gain.  

Changing this would be tedious but do-able.  If anyone wants to
undertake it, let us know.


| -----Original Message-----
| From: haskell-cafe-bounces at haskell.org
[mailto:haskell-cafe-bounces at haskell.org] On Behalf Of
| Thiago Arrais
| Sent: 08 June 2006 20:07
| To: haskell-cafe at haskell.org
| Subject: Re: [Haskell-cafe] Re: Editors for Haskell
| Imam,
| On 6/8/06, Imam Tashdid ul Alam <uchchwhash at yahoo.com> wrote:
| >   - about formatted error messages (I am sure you guys
| > don't care), could someone build a light GHC front end
| > that given a .hs/.lhs file produces two XML files with
| > specified DTD, the parsed structure and the error
| > messages?
| I would really appreciate that. I am the one maintaining EclipseFP now
| and I know that having the syntax-tree in XML format would help us a
| lot. For now, we use our own Haskell parser (written in Java). It is
| not a full parser (and maybe it'll never be), but it allows us to do
| some tricks like showing a simple code outline and do some code
| assistance.
| Maybe this isn't as much work as structuring the error messages.
| Cheers,
| Thiago Arrais
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