Inline C & Objective-C in Haskell

This library uses Template Haskell and language-c-quote, a quasi-quotation library for C-like languages, to provide inline C and Objective-C in Haskell. It extracts the C/Objective-C code automatically, when compiling the Haskell program, and generates marshalling code for common types. The wiki on GitHub details the motivation for this approach.

Building

To build the library, just use cabal install as usual from the source code directory or by installing from Hackage.

You may like to have a look at a minimal example of its use, which you can build as follows:

• Execute cd tests/objc/minimal; make.
• Now run the demo executable with ./Minimal.

To build the proof of concept example, do the following:

• Execute cd tests/objc/concept; make.
• Now run the demo executable with ./InlineObjC.

To build the more complex Haskell interpreter app:

• Execute cd tests/objc/app; make.
• Now open -a HSApp.app.

I tested it with Haskell Platform 2013.2.0.0 (which includes GHC 7.6.3) and it requires the latest version of language-c-quote, which is 0.7.6.

Status

The library is still in its early stages. At the moment automatic marshalling support is limited to strings and boxed Haskell values represented as stable pointers in C land. However, it is quite easy to add more types, and I do welcome pull request!