Checked.hs

{-# LANGUAGE CPP, GeneralizedNewtypeDeriving #-}

-- |
-- Module    :  Data.Word.Checked
-- Copyright :  (c) Antoine Latter 2008
-- License   :  BSD3
--
-- Maintainer:  Antoine Latter <aslatter@gmail.com>
-- Stability :  provisional
-- Portability: portable  -- requires GeneralizedNewtypeDeriving
--
-- A drop-in replacements for the Data.Word types.
-- Exceptions are thrown whenever an operation would over-flow.
--

module Data.Word.Checked(Word()
                       ,Word8()
                       ,Word16()
                       ,Word32()
                       ,Word64()
                       ) where

import qualified Data.Word as W
import Control.Exception(assert)

import Data.Typeable
import Foreign.Storable (Storable)
import Text.Printf (PrintfArg)
import Data.Ix (Ix)
-- import Data.Generics.Basics (Data)
import Data.Bits (Bits)

#include "checked.h"

CHECKED_WRAPPER(Word,   W,   W.Word)
CHECKED_WRAPPER(Word8,  W8,  W.Word8)
CHECKED_WRAPPER(Word16, W16, W.Word16)
CHECKED_WRAPPER(Word32, W32, W.Word32)
CHECKED_WRAPPER(Word64, W64, W.Word64)