    {-# LANGUAGE CPP                #-}
    {-# LANGUAGE OverloadedStrings  #-}
    {-# LANGUAGE StandaloneDeriving #-}
    {-# LANGUAGE TemplateHaskell    #-}
    #if __GLASGOW_HASKELL__ >= 806
    {-# LANGUAGE DerivingVia        #-}
    #endif
    {-# OPTIONS_GHC -fno-warn-orphans #-}
    {-|
    Module:      TextShow.Control.Exception
    Copyright:   (C) 2014-2017 Ryan Scott
    License:     BSD-style (see the file LICENSE)
    Maintainer:  Ryan Scott
    Stability:   Provisional
    Portability: GHC

    'TextShow' instances for 'Exception' data types.

    /Since: 2/
    -}
    module TextShow.Control.Exception () where

    import Control.Exception.Base

    import Data.Text.Lazy.Builder (fromString)
    #if MIN_VERSION_base(4,9,0)
    import Data.Text.Lazy.Builder (singleton)
    #endif

    import Prelude ()
    import Prelude.Compat

    import TextShow.Classes (TextShow(..))
    import TextShow.FromStringTextShow (FromStringShow(..))
    import TextShow.TH.Internal (deriveTextShow)

    -- | /Since: 2/
    #if __GLASGOW_HASKELL__ >= 806
    deriving via FromStringShow SomeException instance TextShow SomeException
    #else
    instance TextShow SomeException where
        showbPrec p (SomeException e) = showbPrec p $ FromStringShow e
        {-# INLINE showbPrec #-}
    #endif

    -- | /Since: 2/
    #if __GLASGOW_HASKELL__ >= 806
    deriving via FromStringShow IOException instance TextShow IOException
    #else
    instance TextShow IOException where
        showb = showb . FromStringShow
        {-# INLINE showb #-}
    #endif

    -- | /Since: 2/
    instance TextShow ArithException where
        showb Overflow             = "arithmetic overflow"
        showb Underflow            = "arithmetic underflow"
        showb LossOfPrecision      = "loss of precision"
        showb DivideByZero         = "divide by zero"
        showb Denormal             = "denormal"
    #if MIN_VERSION_base(4,6,0)
        showb RatioZeroDenominator = "Ratio has zero denominator"
    #endif

    -- | /Since: 2/
    instance TextShow ArrayException where
        showb (IndexOutOfBounds s)
            =  "array index out of range"
            <> (if not $ null s then ": " <> fromString s
                                else mempty)
        showb (UndefinedElement s)
            =  "undefined array element"
            <> (if not $ null s then ": " <> fromString s
                                else mempty)
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow AssertionFailed where
        showb (AssertionFailed err) = fromString err
        {-# INLINE showb #-}

    #if MIN_VERSION_base(4,7,0)
    -- | Only available with @base-4.7.0.0@ or later.
    --
    -- /Since: 2/
    instance TextShow SomeAsyncException where
        showb (SomeAsyncException e) = showb $ FromStringShow e
        {-# INLINE showb #-}
    #endif

    -- | /Since: 2/
    instance TextShow AsyncException where
        showb StackOverflow = "stack overflow"
        showb HeapOverflow  = "heap overflow"
        showb ThreadKilled  = "thread killed"
        showb UserInterrupt = "user interrupt"
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow NonTermination where
        showb NonTermination = "<<loop>>"
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow NestedAtomically where
        showb NestedAtomically = "Control.Concurrent.STM.atomically was nested"
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow BlockedIndefinitelyOnMVar where
        showb BlockedIndefinitelyOnMVar = "thread blocked indefinitely in an MVar operation"
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow BlockedIndefinitelyOnSTM where
        showb BlockedIndefinitelyOnSTM = "thread blocked indefinitely in an STM transaction"
        {-# INLINE showb #-}

    #if MIN_VERSION_base(4,8,0)
    -- | Only available with @base-4.8.0.0@ or later.
    --
    -- /Since: 2/
    instance TextShow AllocationLimitExceeded where
        showb AllocationLimitExceeded = "allocation limit exceeded"
        {-# INLINE showb #-}
    #endif

    #if MIN_VERSION_base(4,9,0)
    -- | Only available with @base-4.9.0.0@ or later.
    --
    -- /Since: 3/
    instance TextShow TypeError where
        showb (TypeError err) = fromString err
        {-# INLINE showb #-}
    #endif

    #if MIN_VERSION_base(4,10,0)
    -- | Only available with @base-4.10.0.0@ or later.
    --
    -- /Since: 3.6/
    instance TextShow CompactionFailed where
        showb (CompactionFailed why) = fromString ("compaction failed: " <> why)
    #endif

    #if MIN_VERSION_base(4,11,0)
    -- | Only available with @base-4.11.0.0@ or later.
    --
    -- /Since: 3.7.3/
    instance TextShow FixIOException where
        showbPrec _ FixIOException = fromString "cyclic evaluation in fixIO"
    #endif

    -- | /Since: 2/
    instance TextShow Deadlock where
        showb Deadlock = "<<deadlock>>"
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow NoMethodError where
        showb (NoMethodError err) = fromString err
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow PatternMatchFail where
        showb (PatternMatchFail err) = fromString err
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow RecConError where
        showb (RecConError err) = fromString err
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow RecSelError where
        showb (RecSelError err) = fromString err
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow RecUpdError where
        showb (RecUpdError err) = fromString err
        {-# INLINE showb #-}

    -- | /Since: 2/
    instance TextShow ErrorCall where
    #if MIN_VERSION_base(4,9,0)
        showb (ErrorCallWithLocation err "")  = fromString err
        showb (ErrorCallWithLocation err loc) =
          fromString err <> singleton '\n' <> fromString loc
    #else
        showb (ErrorCall err) = fromString err
    #endif

    -- | /Since: 2/
    $(deriveTextShow ''MaskingState)