From/ToSQL instances for Word16, Word32, Word64

src/Database/PostgreSQL/PQTypes/Format.hs

@@ -85,6 +85,15 @@ instance PQFormat Float where
 instance PQFormat Double where
   pqFormat = BS.pack "%float8"
 
+instance PQFormat Word16 where
+  pqFormat = BS.pack "%word2"
+
+instance PQFormat Word32 where
+  pqFormat = BS.pack "%word4"
+
+instance PQFormat Word64 where
+  pqFormat = BS.pack "%word8"
+
 -- CHAR
 
 instance PQFormat Char where

src/Database/PostgreSQL/PQTypes/FromSQL.hs

@@ -68,6 +68,21 @@ instance FromSQL Double where
   fromSQL Nothing = unexpectedNULL
   fromSQL (Just n) = pure . realToFrac $ n
 
+instance FromSQL Word16 where
+  type PQBase Word16 = CUShort
+  fromSQL Nothing = unexpectedNULL
+  fromSQL (Just n) = pure . fromIntegral $ n
+
+instance FromSQL Word32 where
+  type PQBase Word32 = CUInt
+  fromSQL Nothing = unexpectedNULL
+  fromSQL (Just n) = pure . fromIntegral $ n
+
+instance FromSQL Word64 where
+  type PQBase Word64 = CULLong
+  fromSQL Nothing = unexpectedNULL
+  fromSQL (Just n) = pure . fromIntegral $ n
+
 -- CHAR
 
 instance FromSQL Char where

src/Database/PostgreSQL/PQTypes/ToSQL.hs

@@ -84,6 +84,18 @@ instance ToSQL Double where
   type PQDest Double = CDouble
   toSQL n _ = putAsPtr (realToFrac n)
 
+instance ToSQL Word16 where
+  type PQDest Word16 = CUShort
+  toSQL n _ = putAsPtr (fromIntegral n)
+
+instance ToSQL Word32 where
+  type PQDest Word32 = CUInt
+  toSQL n _ = putAsPtr (fromIntegral n)
+
+instance ToSQL Word64 where
+  type PQDest Word64 = CULLong
+  toSQL n _ = putAsPtr (fromIntegral n)
+
 -- CHAR
 
 instance ToSQL Char where