cleanup the code for the FFI binding. The API is now more uniform with the Python and the Java bindings. Fixed a lot of memory leaks.

src/runtime/haskell-bind/PGF2/FFI.hs

@@ -0,0 +1,154 @@
+{-# LANGUAGE ForeignFunctionInterface #-}
+
+module PGF2.FFI where
+
+import Foreign.C
+import Foreign.C.String
+import Foreign.Ptr
+import Foreign.ForeignPtr
+import Control.Exception
+
+------------------------------------------------------------------
+-- libgu API
+
+data GuEnum
+data GuExn
+data GuIn
+data GuKind
+data GuString
+data GuStringBuf
+data GuMapItor
+data GuOut
+data GuPool
+
+foreign import ccall "gu/mem.h gu_new_pool"
+  gu_new_pool :: IO (Ptr GuPool)
+
+foreign import ccall "gu/mem.h gu_pool_free"
+  gu_pool_free :: Ptr GuPool -> IO ()
+
+foreign import ccall "gu/mem.h &gu_pool_free"
+  gu_pool_finalizer :: FinalizerPtr GuPool
+
+foreign import ccall "gu/exn.h gu_new_exn"
+  gu_new_exn :: Ptr GuExn -> Ptr GuKind -> Ptr GuPool -> IO (Ptr GuExn)
+
+foreign import ccall "gu/exn.h gu_exn_is_raised"
+  gu_exn_is_raised :: Ptr GuExn -> IO Bool
+
+foreign import ccall "gu/type.h &gu_type__type"
+  gu_type__type :: Ptr GuKind
+
+foreign import ccall "gu/string.h gu_string_in"
+  gu_string_in :: CString -> Ptr GuPool -> IO (Ptr GuIn)
+
+foreign import ccall "gu/string.h gu_string_buf"
+  gu_string_buf :: Ptr GuPool -> IO (Ptr GuStringBuf)
+
+foreign import ccall "gu/string.h gu_string_buf_out"
+  gu_string_buf_out :: Ptr GuStringBuf -> IO (Ptr GuOut)
+
+foreign import ccall "gu/enum.h gu_enum_next"
+  gu_enum_next :: Ptr a -> Ptr (Ptr b) -> Ptr GuPool -> IO ()
+
+foreign import ccall "gu/string.h gu_string_buf_freeze"
+  gu_string_buf_freeze :: Ptr GuStringBuf -> Ptr GuPool -> IO CString
+
+withGuPool :: (Ptr GuPool -> IO a) -> IO a
+withGuPool f = bracket gu_new_pool gu_pool_free f
+
+
+------------------------------------------------------------------
+-- libpgf API
+
+data PgfPGF
+data PgfApplication
+data PgfConcr
+type PgfExpr = Ptr ()
+data PgfExprProb
+data PgfFullFormEntry
+data PgfMorphoCallback
+data PgfPrintContext
+data PgfType
+
+foreign import ccall "pgf/pgf.h pgf_read"
+  pgf_read :: CString -> Ptr GuPool -> Ptr GuExn -> IO (Ptr PgfPGF)
+
+foreign import ccall "pgf/pgf.h pgf_abstract_name"
+  pgf_abstract_name :: Ptr PgfPGF -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_iter_languages"
+  pgf_iter_languages :: Ptr PgfPGF -> Ptr GuMapItor -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_get_language"
+  pgf_get_language :: Ptr PgfPGF -> CString -> IO (Ptr PgfConcr)
+
+foreign import ccall "pgf/pgf.h pgf_concrete_name"
+  pgf_concrete_name :: Ptr PgfConcr -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_language_code"
+  pgf_language_code :: Ptr PgfConcr -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_iter_categories"
+  pgf_iter_categories :: Ptr PgfPGF -> Ptr GuMapItor -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_start_cat"
+  pgf_start_cat :: Ptr PgfPGF -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_iter_functions"
+  pgf_iter_functions :: Ptr PgfPGF -> Ptr GuMapItor -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_iter_functions_by_cat"
+  pgf_iter_functions_by_cat :: Ptr PgfPGF -> Ptr GuMapItor -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_function_type"
+   pgf_function_type :: Ptr PgfPGF -> CString -> IO (Ptr PgfType)
+
+foreign import ccall "pgf/pgf.h pgf_print_name"
+  pgf_print_name :: Ptr PgfConcr -> CString -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_linearize"
+  pgf_linearize :: Ptr PgfConcr -> PgfExpr -> Ptr GuOut -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_parse"
+  pgf_parse :: Ptr PgfConcr -> CString -> CString -> Ptr GuExn -> Ptr GuPool -> Ptr GuPool -> IO (Ptr GuEnum)
+
+foreign import ccall "pgf/pgf.h pgf_lookup_morpho"
+  pgf_lookup_morpho :: Ptr PgfConcr -> CString -> Ptr PgfMorphoCallback -> Ptr GuExn -> IO ()
+
+type LookupMorphoCallback = Ptr PgfMorphoCallback -> CString -> CString -> Float -> Ptr GuExn -> IO ()
+
+foreign import ccall "wrapper"
+  wrapLookupMorphoCallback :: LookupMorphoCallback -> IO (FunPtr LookupMorphoCallback)
+
+type MapItorCallback = Ptr GuMapItor -> Ptr () -> Ptr () -> Ptr GuExn -> IO ()
+
+foreign import ccall "wrapper"
+  wrapMapItorCallback :: MapItorCallback -> IO (FunPtr MapItorCallback)
+
+foreign import ccall "pgf/pgf.h pgf_fullform_lexicon"
+  pgf_fullform_lexicon :: Ptr PgfConcr -> Ptr GuPool -> IO (Ptr GuEnum)
+
+foreign import ccall "pgf/pgf.h pgf_fullform_get_string"
+  pgf_fullform_get_string :: Ptr PgfFullFormEntry -> IO CString
+
+foreign import ccall "pgf/pgf.h pgf_fullform_get_analyses"
+  pgf_fullform_get_analyses :: Ptr PgfFullFormEntry -> Ptr PgfMorphoCallback -> Ptr GuExn -> IO ()
+                    
+foreign import ccall "pgf/pgf.h pgf_expr_unapply"
+  pgf_expr_unapply :: PgfExpr -> Ptr GuPool -> IO (Ptr PgfApplication)
+
+foreign import ccall "pgf/expr.h pgf_expr_arity"
+  pgf_expr_arity :: PgfExpr -> IO Int
+
+foreign import ccall "pgf/expr.h pgf_print_expr"
+  pgf_print_expr :: PgfExpr -> Ptr PgfPrintContext -> Int -> Ptr GuOut -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/pgf.h pgf_generate_all"
+  pgf_generate_all :: Ptr PgfPGF -> CString -> Ptr GuPool -> IO (Ptr GuEnum)
+
+foreign import ccall "pgf/pgf.h pgf_print"
+  pgf_print :: Ptr PgfPGF -> Ptr GuOut -> Ptr GuExn -> IO ()
+
+foreign import ccall "pgf/expr.h pgf_read_expr"
+  pgf_read_expr :: Ptr GuIn -> Ptr GuPool -> Ptr GuExn -> IO PgfExpr