{-# LANGUAGE TemplateHaskell #-}
module STD.SharedPtr.TH where
import Data.Char
import Data.List
import Data.Monoid
import Foreign.C.Types
import Foreign.Ptr
import Language.Haskell.TH
import Language.Haskell.TH.Syntax
import FFICXX.Runtime.CodeGen.Cxx
import FFICXX.Runtime.TH
import STD.SharedPtr.Template

t_newSharedPtr0 :: Type -> String -> Q Exp
t_newSharedPtr0 typ1 suffix
  = mkTFunc
      (typ1, suffix, \ n -> "SharedPtr_newSharedPtr0" <> n, tyf)
  where tyf _ = let tp1 = pure typ1 in [t| IO (SharedPtr $( tp1 )) |]

t_newSharedPtr :: Type -> String -> Q Exp
t_newSharedPtr typ1 suffix
  = mkTFunc (typ1, suffix, \ n -> "SharedPtr_new" <> n, tyf)
  where tyf _
          = let tp1 = pure typ1 in [t| $( tp1 ) -> IO (SharedPtr $( tp1 )) |]

t_get :: Type -> String -> Q Exp
t_get typ1 suffix
  = mkTFunc (typ1, suffix, \ n -> "SharedPtr_get" <> n, tyf)
  where tyf _
          = let tp1 = pure typ1 in [t| SharedPtr $( tp1 ) -> IO $( tp1 ) |]

t_reset :: Type -> String -> Q Exp
t_reset typ1 suffix
  = mkTFunc (typ1, suffix, \ n -> "SharedPtr_reset" <> n, tyf)
  where tyf _
          = let tp1 = pure typ1 in [t| SharedPtr $( tp1 ) -> IO () |]

t_use_count :: Type -> String -> Q Exp
t_use_count typ1 suffix
  = mkTFunc (typ1, suffix, \ n -> "SharedPtr_use_count" <> n, tyf)
  where tyf _
          = let tp1 = pure typ1 in [t| SharedPtr $( tp1 ) -> IO CInt |]

t_deleteSharedPtr :: Type -> String -> Q Exp
t_deleteSharedPtr typ1 suffix
  = mkTFunc (typ1, suffix, \ n -> "SharedPtr_delete" <> n, tyf)
  where tyf _
          = let tp1 = pure typ1 in [t| SharedPtr $( tp1 ) -> IO () |]

genSharedPtrInstanceFor ::
                        IsCPrimitive -> (Q Type, TemplateParamInfo) -> Q [Dec]
genSharedPtrInstanceFor isCprim (qtyp1, param1)
  = do let params = map tpinfoSuffix [param1]
       let suffix = concatMap (\ x -> "_" ++ tpinfoSuffix x) [param1]
       callmod_ <- fmap loc_module location
       let callmod = dot2_ callmod_
       typ1 <- qtyp1
       f1 <- mkNew "newSharedPtr0" t_newSharedPtr0 typ1 suffix
       f2 <- mkNew "newSharedPtr" t_newSharedPtr typ1 suffix
       f3 <- mkMember "get" t_get typ1 suffix
       f4 <- mkMember "reset" t_reset typ1 suffix
       f5 <- mkMember "use_count" t_use_count typ1 suffix
       f6 <- mkDelete "deleteSharedPtr" t_deleteSharedPtr typ1 suffix
       addModFinalizer
         (addForeignSource LangCxx
            ("\n#include \"MacroPatternMatch.h\"\n\n\n#include \"memory\"\n\n\n#define SharedPtr_newSharedPtr0(callmod, tp1) \\\nextern \"C\" {\\\nvoid* SharedPtr_newSharedPtr0_##tp1 (  );}\\\ninline void* SharedPtr_newSharedPtr0_##tp1 (  ) {\\\nreturn static_cast<void*>(new std::shared_ptr<tp1>());\\\n}\\\nauto a_##callmod##_SharedPtr_newSharedPtr0_##tp1=SharedPtr_newSharedPtr0_##tp1;\n\n\n#define SharedPtr_new(callmod, tp1) \\\nextern \"C\" {\\\nvoid* SharedPtr_new_##tp1 ( tp1##_p p );}\\\ninline void* SharedPtr_new_##tp1 ( tp1##_p p ) {\\\nreturn static_cast<void*>(new std::shared_ptr<tp1>(from_nonconst_to_nonconst<tp1, tp1##_t>(p)));\\\n}\\\nauto a_##callmod##_SharedPtr_new_##tp1=SharedPtr_new_##tp1;\n\n\n#define SharedPtr_get(callmod, tp1) \\\nextern \"C\" {\\\ntp1##_p SharedPtr_get_##tp1 ( void* p );}\\\ninline tp1##_p SharedPtr_get_##tp1 ( void* p ) {\\\nreturn from_nonconst_to_nonconst<tp1##_t, tp1>((static_cast<std::shared_ptr<tp1>*>(p))->get());\\\n}\\\nauto a_##callmod##_SharedPtr_get_##tp1=SharedPtr_get_##tp1;\n\n\n#define SharedPtr_reset(callmod, tp1) \\\nextern \"C\" {\\\nvoid SharedPtr_reset_##tp1 ( void* p );}\\\ninline void SharedPtr_reset_##tp1 ( void* p ) {\\\n(static_cast<std::shared_ptr<tp1>*>(p))->reset();\\\n}\\\nauto a_##callmod##_SharedPtr_reset_##tp1=SharedPtr_reset_##tp1;\n\n\n#define SharedPtr_use_count(callmod, tp1) \\\nextern \"C\" {\\\nint SharedPtr_use_count_##tp1 ( void* p );}\\\ninline int SharedPtr_use_count_##tp1 ( void* p ) {\\\nreturn (static_cast<std::shared_ptr<tp1>*>(p))->use_count();\\\n}\\\nauto a_##callmod##_SharedPtr_use_count_##tp1=SharedPtr_use_count_##tp1;\n\n\n#define SharedPtr_delete(callmod, tp1) \\\nextern \"C\" {\\\nvoid SharedPtr_delete_##tp1 ( void* p );}\\\ninline void SharedPtr_delete_##tp1 ( void* p ) {\\\ndelete static_cast<std::shared_ptr<tp1>*>(p);\\\n}\\\nauto a_##callmod##_SharedPtr_delete_##tp1=SharedPtr_delete_##tp1;\n\n\n#define SharedPtr_newSharedPtr0_s(callmod, tp1) \\\nextern \"C\" {\\\nvoid* SharedPtr_newSharedPtr0_##tp1 (  );}\\\ninline void* SharedPtr_newSharedPtr0_##tp1 (  ) {\\\nreturn static_cast<void*>(new std::shared_ptr<tp1>());\\\n}\\\nauto a_##callmod##_SharedPtr_newSharedPtr0_##tp1=SharedPtr_newSharedPtr0_##tp1;\n\n\n#define SharedPtr_new_s(callmod, tp1) \\\nextern \"C\" {\\\nvoid* SharedPtr_new_##tp1 ( tp1 p );}\\\ninline void* SharedPtr_new_##tp1 ( tp1 p ) {\\\nreturn static_cast<void*>(new std::shared_ptr<tp1>(p));\\\n}\\\nauto a_##callmod##_SharedPtr_new_##tp1=SharedPtr_new_##tp1;\n\n\n#define SharedPtr_get_s(callmod, tp1) \\\nextern \"C\" {\\\ntp1 SharedPtr_get_##tp1 ( void* p );}\\\ninline tp1 SharedPtr_get_##tp1 ( void* p ) {\\\nreturn (static_cast<std::shared_ptr<tp1>*>(p))->get();\\\n}\\\nauto a_##callmod##_SharedPtr_get_##tp1=SharedPtr_get_##tp1;\n\n\n#define SharedPtr_reset_s(callmod, tp1) \\\nextern \"C\" {\\\nvoid SharedPtr_reset_##tp1 ( void* p );}\\\ninline void SharedPtr_reset_##tp1 ( void* p ) {\\\n(static_cast<std::shared_ptr<tp1>*>(p))->reset();\\\n}\\\nauto a_##callmod##_SharedPtr_reset_##tp1=SharedPtr_reset_##tp1;\n\n\n#define SharedPtr_use_count_s(callmod, tp1) \\\nextern \"C\" {\\\nint SharedPtr_use_count_##tp1 ( void* p );}\\\ninline int SharedPtr_use_count_##tp1 ( void* p ) {\\\nreturn (static_cast<std::shared_ptr<tp1>*>(p))->use_count();\\\n}\\\nauto a_##callmod##_SharedPtr_use_count_##tp1=SharedPtr_use_count_##tp1;\n\n\n#define SharedPtr_delete_s(callmod, tp1) \\\nextern \"C\" {\\\nvoid SharedPtr_delete_##tp1 ( void* p );}\\\ninline void SharedPtr_delete_##tp1 ( void* p ) {\\\ndelete static_cast<std::shared_ptr<tp1>*>(p);\\\n}\\\nauto a_##callmod##_SharedPtr_delete_##tp1=SharedPtr_delete_##tp1;\n\n\n#define SharedPtr_instance(callmod, tp1) \\\nSharedPtr_newSharedPtr0(callmod, tp1)\\\nSharedPtr_new(callmod, tp1)\\\nSharedPtr_get(callmod, tp1)\\\nSharedPtr_reset(callmod, tp1)\\\nSharedPtr_use_count(callmod, tp1)\\\nSharedPtr_delete(callmod, tp1)\n\n\n#define SharedPtr_instance_s(callmod, tp1) \\\nSharedPtr_newSharedPtr0_s(callmod, tp1)\\\nSharedPtr_new_s(callmod, tp1)\\\nSharedPtr_get_s(callmod, tp1)\\\nSharedPtr_reset_s(callmod, tp1)\\\nSharedPtr_use_count_s(callmod, tp1)\\\nSharedPtr_delete_s(callmod, tp1)\n\n"
               ++
               let headers = concatMap tpinfoCxxHeaders [param1]
                   f x = renderCMacro (Include x)
                 in concatMap f headers
                 ++
                 let nss = concatMap tpinfoCxxNamespaces [param1]
                     f x = renderCStmt (UsingNamespace x)
                   in concatMap f nss
                   ++
                   "SharedPtr_instance" ++
                     (case isCprim of
                          CPrim -> "_s"
                          NonCPrim -> "")
                       ++ "(" ++ intercalate ", " (callmod : params) ++ ")\n"))
       let lst = [f1, f2, f3, f4, f5, f6]
       pure [mkInstance [] (AppT (con "ISharedPtr") typ1) lst]