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2011-06-22T12:52:26.260
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2011-06-22T12:52:26.260
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This is fairly easy using <a href="http://projects.haskell.org/ghc-iphone/downloads/GHC-iPhone.pdf" rel="noreferrer">GHC-iPhone</a> and the <a href="http://www.haskell.org/haskellwiki/Foreign_Function_Interface" rel="noreferrer">Foreign Function Interface</a> For reference, David Pollak has an example implementing a Lisp interpreter written in Haskell, running inside an iPad app: <blockquote> <a href="https://github.com/dpp/LispHaskellIPad" rel="noreferrer">https://github.com/dpp/LispHaskellIPad</a> </blockquote> An example declaring the Haskell main in <code>main.m</code>: <pre><code>extern int Haskell_main(int argc, char* argv[]); int main(int argc, char* argv[]) { Haskell_main(argc, argv); } </code></pre> and in his <code>Main.hs</code>, a series of foreign function declarations granting him access to the Cocoa libs: <pre><code>foreign import ccall safe "openWindow" openWindow :: IO CInt data ViewController_struct type ViewController = Ptr ViewController_struct type RunStr = ViewController -> CString -> IO () foreign import ccall safe "wrapper" wrapFuncInvoke :: RunStr -> IO (FunPtr RunStr) foreign import ccall safe "setLispEval" setLispEval :: ViewController -> FunPtr RunStr -> IO () foreign import ccall safe "addToResult" addToResult :: ViewController -> CString -> IO () data ObjCId_struct type ObjCId = Ptr ObjCId_struct data ObjCSEL_struct type ObjCSEL = Ptr ObjCSEL_struct foreign import ccall safe "objc_msgSend" objc_msgSend :: ObjCId -> ObjCSEL -> IO ObjCId foreign import ccall safe "objc_msgSend" objc_msgSendInt :: ObjCId -> ObjCSEL -> Int -> IO ObjCId foreign import ccall safe "sel_registerName" sel_registerName :: CString -> IO ObjCSEL foreign import ccall safe "objc_lookUpClass" objc_lookUpClass :: CString -> IO ObjCId </code></pre>
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1. PORecommendation to embed Haskell as script engine in iOS apps on ARM?
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1. COHeh... I found this post when I was searching for some GHC-iPhone stuff... feeling recursive. ;-)
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