Standard way to translate Haskell to other languages?

Joey

1 Jan 2014 1 Jan '14

12:38 a.m.

I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees. I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this? The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place. What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share? I've posted a similar question to the Haskell Reddit at http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_ha.... Thanks! Joey Eremondi

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Malcolm Wallace

1 Jan 1 Jan

6:13 a.m.

On 1 Jan 2014, at 05:38, Joey wrote:

...

I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing?

Yes. Use the haskell-src-exts parser. It gives you a somewhat standard syntax tree. Then you can use straight pattern-matching equations for transformation, or if that leads to lots of boilerplate code, then something like uniplate can be useful. Regards, Malcolm

Ömer Sinan Ağacan

8:24 a.m.

New subject: Standard way to translate Haskell to other languages?

Compiling Haskell to another language is huge effort, maybe instead of this you can compile Haskell to JS using GHCJS or Fay, and then use Elm FFI to use compiled Haskell functions. --- Ömer Sinan Ağacan http://osa1.net 2014/1/1 Joey :

...

I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share?

I've posted a similar question to the Haskell Reddit at http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_ha....

Thanks!

Joey Eremondi

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Joey

11:08 p.m.

New subject: Standard way to translate Haskell to other languages?

It would be hard, but the languages are nearly identical, so the translation is pretty trivial AST transforming. I'm also not looking to be complete: my main goal is sharing client and server-side code. Thanks to Malcolm Wallace for the haskell-src-extensions suggestion, it looks great. On 14-01-01 07:24 AM, Ömer Sinan Ağacan wrote:

...

Compiling Haskell to another language is huge effort, maybe instead of this you can compile Haskell to JS using GHCJS or Fay, and then use Elm FFI to use compiled Haskell functions.

--- Ömer Sinan Ağacan http://osa1.net

2014/1/1 Joey :

...
I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share?

I've posted a similar question to the Haskell Reddit at http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_ha....

Thanks!

Joey Eremondi

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Carter Schonwald

11:19 p.m.

New subject: Standard way to translate Haskell to other languages?

have you considered using GHCJS? On Wed, Jan 1, 2014 at 11:08 PM, Joey wrote:

...

It would be hard, but the languages are nearly identical, so the translation is pretty trivial AST transforming. I'm also not looking to be complete: my main goal is sharing client and server-side code. Thanks to Malcolm Wallace for the haskell-src-extensions suggestion, it looks great.

On 14-01-01 07:24 AM, Ömer Sinan Ağacan wrote:

...
Compiling Haskell to another language is huge effort, maybe instead of this you can compile Haskell to JS using GHCJS or Fay, and then use Elm FFI to use compiled Haskell functions.

--- Ömer Sinan Ağacan http://osa1.net

2014/1/1 Joey :

...
I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share?

I've posted a similar question to the Haskell Reddit at http://www.reddit.com/r/haskell/comments/1u55rl/ standard_way_to_translate_haskell_to_other/.

Thanks!

Joey Eremondi

_______________________________________________ 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

Joey

2 Jan 2 Jan

1:06 a.m.

New subject: Standard way to translate Haskell to other languages?

It looked interesting, but when I initially started my project (about six months ago) it seemed pretty immature. It also seems to be less focused on graphical programming, which Elm is superb at with its FRP. I'd also heard GHCJS was pretty heavyweight, getting the entire runtime going. I'm really only using JS for rednering. On 14-01-01 10:19 PM, Carter Schonwald wrote:

...

have you considered using GHCJS?

On Wed, Jan 1, 2014 at 11:08 PM, Joey mailto:jmitdase@gmail.com> wrote:

It would be hard, but the languages are nearly identical, so the translation is pretty trivial AST transforming. I'm also not looking to be complete: my main goal is sharing client and server-side code. Thanks to Malcolm Wallace for the haskell-src-extensions suggestion, it looks great.

On 14-01-01 07:24 AM, Ömer Sinan Ağacan wrote:

Compiling Haskell to another language is huge effort, maybe instead of this you can compile Haskell to JS using GHCJS or Fay, and then use Elm FFI to use compiled Haskell functions.

--- Ömer Sinan Ağacan http://osa1.net

2014/1/1 Joey mailto:jmitdase@gmail.com>:

I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share?

I've posted a similar question to the Haskell Reddit at http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_ha....

Thanks!

Joey Eremondi

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org mailto:Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org mailto:Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Carter Schonwald

1:17 a.m.

New subject: Standard way to translate Haskell to other languages?

oh, in that case you should check out three-peny gui! hackage.haskell.org/package/threepenny-gui On Thu, Jan 2, 2014 at 1:06 AM, Joey wrote:

...

It looked interesting, but when I initially started my project (about six months ago) it seemed pretty immature. It also seems to be less focused on graphical programming, which Elm is superb at with its FRP. I'd also heard GHCJS was pretty heavyweight, getting the entire runtime going. I'm really only using JS for rednering.

On 14-01-01 10:19 PM, Carter Schonwald wrote:

have you considered using GHCJS?

On Wed, Jan 1, 2014 at 11:08 PM, Joey wrote:

...
It would be hard, but the languages are nearly identical, so the translation is pretty trivial AST transforming. I'm also not looking to be complete: my main goal is sharing client and server-side code. Thanks to Malcolm Wallace for the haskell-src-extensions suggestion, it looks great.

On 14-01-01 07:24 AM, Ömer Sinan Ağacan wrote:

...
Compiling Haskell to another language is huge effort, maybe instead of this you can compile Haskell to JS using GHCJS or Fay, and then use Elm FFI to use compiled Haskell functions.

--- Ömer Sinan Ağacan http://osa1.net

2014/1/1 Joey :

...
I'm looking at writing a simple Haskell to Elm translator. Thankfully, the Elm compiler is in Haskell, so I'm just trying transforming syntax trees.

I'm wondering, is there a standard way to do this sort of thing? Template Haskell looked promising, but it seems there isn't much of a way to do introspection on function definition. Has there been any work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and I haven't been able to find many tutorials for this sort of thing. I could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects I could use as reference? What packages are useful for generating and manipulating Haskell ASTs? Does anybody have experience in this area they could share?

I've posted a similar question to the Haskell Reddit at

http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_ha... .

Thanks!

Joey Eremondi

_______________________________________________ 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

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participants (4)

Carter Schonwald
Joey
Malcolm Wallace
Ömer Sinan Ağacan