On 06/05/2009 07:31, Luke Palmer wrote:
On Wed, May 6, 2009 at 12:07 AM, Rouan van Dalen <rvda...@yahoo.co.uk
<mailto:rvda...@yahoo.co.uk>> wrote:
Hi everyone.
I am designing my own programming language.
I would like to know what is the best way to go about writing my
compiler in haskell.
What are the tools available in haskell that can help with compiler
construction?
I know about Happy. Is that a good tool to use?
I don't like Happy. Using a parser generator is like admitting defeat,
when we have no defeat to admit. I would recommend a parser combinator
library like Parsec (or if you like building things from the ground up,
ReadP).
There are distinct advantages to using a parser generator over parsing
combinators. For example, you get a static guarantee that your language
is unambiguous and doesn't need backtracking. (and we like static
guarantees!)
I seem to recall there are parsing combinators that generate LR parsing
tables at runtime, which might be a good compromise though.
Cheers,
Simon
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