diff options
Diffstat (limited to 'compiler/utils/Binary.hs')
| -rw-r--r-- | compiler/utils/Binary.hs | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/compiler/utils/Binary.hs b/compiler/utils/Binary.hs index 166a94850b..0aa8c648b8 100644 --- a/compiler/utils/Binary.hs +++ b/compiler/utils/Binary.hs @@ -833,18 +833,30 @@ instance Binary RecFlag where 0 -> do return Recursive _ -> do return NonRecursive -instance Binary OverlapFlag where - put_ bh (NoOverlap b) = putByte bh 0 >> put_ bh b - put_ bh (OverlapOk b) = putByte bh 1 >> put_ bh b - put_ bh (Incoherent b) = putByte bh 2 >> put_ bh b +instance Binary OverlapMode where + put_ bh NoOverlap = putByte bh 0 + put_ bh Overlaps = putByte bh 1 + put_ bh Incoherent = putByte bh 2 + put_ bh Overlapping = putByte bh 3 + put_ bh Overlappable = putByte bh 4 get bh = do h <- getByte bh - b <- get bh case h of - 0 -> return $ NoOverlap b - 1 -> return $ OverlapOk b - 2 -> return $ Incoherent b - _ -> panic ("get OverlapFlag " ++ show h) + 0 -> return NoOverlap + 1 -> return Overlaps + 2 -> return Incoherent + 3 -> return Overlapping + 4 -> return Overlappable + _ -> panic ("get OverlapMode" ++ show h) + + +instance Binary OverlapFlag where + put_ bh flag = do put_ bh (overlapMode flag) + put_ bh (isSafeOverlap flag) + get bh = do + h <- get bh + b <- get bh + return OverlapFlag { overlapMode = h, isSafeOverlap = b } instance Binary FixityDirection where put_ bh InfixL = do |