Re: [Haskell-cafe] Typechecking Using GHC API
On Tue, 13 Dec 2011 18:16:17 +0100, Sh NJP shayan@gmail.com wrote: I do some pre-processing on a normal Haskell code ( -F ). The pre-processor needs to know the type of each expression. What are the possibilities to do so? Can I use GHC API to employ GHC type checker? If yes, any good tutorial? Is it too naive to think of a function, f :: String - AnnotatedAST , that takes Haskell code and returns its corresponding abstract syntax tree annotated with types? Another, less powerful, but much easier approach would be to use hint, which also provides some type-checking functionality. Unfortunately, the results seem to be just Strings: http://hackage.haskell.org/packages/archive/hint/0.3.3.3/doc/html/Language-Haskell-Interpreter.html#g:7 If you want to see more examples of using the GHC API, you could also take a look at the ghc-mod repository on github, which uses the GHC API to provide type information to Emacs: https://github.com/kazu-yamamoto/ghc-mod Cheers, Daniel pgpBVUtUkkqQF.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Typechecking Using GHC API
Currently: Your only option is to use GHC API if you want type checking. I can't help you with that, sorry. Envisioned: The function you ask for can definitely be written for haskell-src-exts, which I know you are currently using. I just need to complete my type checker for haskell-src-exts first. Which is not a small task, but one that has been started. I doubt it will be done in time for your project though, sorry. Best regards, /Niklas On Tue, Dec 13, 2011 at 6:16 PM, Sh NJP shayan@gmail.com wrote: Hi, I do some pre-processing on a normal Haskell code ( -F ). The pre-processor needs to know the type of each expression. What are the possibilities to do so? Can I use GHC API to employ GHC type checker? If yes, any good tutorial? Is it too naive to think of a function, f :: String - AnnotatedAST , that takes Haskell code and returns its corresponding abstract syntax tree annotated with types? Thanks, /shayan ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Typechecking Using GHC API
My own buildwrapper package (available from github and hackage) uses both haskell-src-exts and the GHC API to provide the same kind of services to the EclipseFP IDE plugins. You may be able to use it directly for your purpose or at least have a look at the code to get a feel for how to use the GHC API. Hope this helps JP On Thu, Dec 15, 2011 at 11:07 AM, Niklas Broberg niklas.brob...@gmail.com wrote: Currently: Your only option is to use GHC API if you want type checking. I can't help you with that, sorry. Envisioned: The function you ask for can definitely be written for haskell-src-exts, which I know you are currently using. I just need to complete my type checker for haskell-src-exts first. Which is not a small task, but one that has been started. I doubt it will be done in time for your project though, sorry. Best regards, /Niklas On Tue, Dec 13, 2011 at 6:16 PM, Sh NJP shayan@gmail.com wrote: Hi, I do some pre-processing on a normal Haskell code ( -F ). The pre-processor needs to know the type of each expression. What are the possibilities to do so? Can I use GHC API to employ GHC type checker? If yes, any good tutorial? Is it too naive to think of a function, f :: String - AnnotatedAST , that takes Haskell code and returns its corresponding abstract syntax tree annotated with types? Thanks, /shayan ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe -- JP Moresmau http://jpmoresmau.blogspot.com/ ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Typechecking Using GHC API
Hi, I do some pre-processing on a normal Haskell code ( -F ). The pre-processor needs to know the type of each expression. What are the possibilities to do so? Can I use GHC API to employ GHC type checker? If yes, any good tutorial? Is it too naive to think of a function, f :: String - AnnotatedAST , that takes Haskell code and returns its corresponding abstract syntax tree annotated with types? Thanks, /shayan ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
