[Haskell-cafe] ANN: bindings-DSL 1.0.4 (Category: FFI)

Hi, bindings-DSL is a mature and well documented preprocessor domain specific language you can use to generate bindings to a C API. It's based on functionality provided by hsc2hs. These are links to Hackage page and documentation: http://hackage.haskell.org/package/bindings-DSL http://bitbucket.org/mauricio/bindings-dsl New in this version: * Support for C unions. * Use of macros for wider portability. An example on the use of unions follow. Suppose you have: union example { int k; char c[4]; }; Then, using bindings-DSL, you'll write: #starttype union example #union_field k , CInt #union_array_field c , CChar #stoptype Here is a ghci session showing the resulting code:

let value = C'example 1 []

u'example'k value (2^10)

C'example {c'example'k = 1024, c'example'c = [0,4,0,0]}

u'example'c value [1,0,0,0]

C'example {c'example'k = 1, c'example'c = [1,0,0,0]}

u'example'c value [0,0,0,1]

C'example {c'example'k = 16777216, c'example'c = [0,0,0,1]} Peeking an uninitialized memory address:

v <- alloca $ \p -> peek p :: IO C'example v

C'example {c'example'k = 81842189, c'example'c = [13,-48,-32,4]} Hope it's useful to you. Best, Maurício