convertible-1.0.9: Typeclasses and instances for converting between types Contents Index

Data.Convertible.Base Portability portable Stability provisional Maintainer John Goerzen <jgoerzen@complete.org>

Contents The conversion process Handling the results

Description

Synopsis

convert :: Convertible a b => a -> b class Convertible a b where safeConvert :: a -> ConvertResult b type ConvertResult a = Either ConvertError a data ConvertError = ConvertError { convSourceValue :: String convSourceType :: String convDestType :: String convErrorMessage :: String } convError :: (Show a, Typeable a, Typeable b) => String -> a -> ConvertResult b prettyConvertError :: ConvertError -> String

The conversion process

convert :: Convertible a b => a -> b

Convert from one type of data to another. Raises an exception if there is an error with the conversion. For a function that does not raise an exception in that case, see safeConvert.

class Convertible a b where

A typeclass that represents something that can be converted. A Convertible a b instance represents an a that can be converted to a b. Methods safeConvert :: a -> ConvertResult b Convert a to b, returning Right on success and Left on error. For a simpler interface, see convert. Instances Convertible Char Int Convertible Char Int8 Convertible Char Int16 Convertible Char Int32 Convertible Char Int64 Convertible Char Integer Convertible Char Word Convertible Char Word8 Convertible Char Word16 Convertible Char Word32 Convertible Char Word64 Convertible Char CChar Convertible Char CSChar Convertible Char CUChar Convertible Char CShort Convertible Char CUShort Convertible Char CInt Convertible Char CUInt Convertible Char CLong Convertible Char CULong Convertible Char CLLong Convertible Char CULLong Convertible Char CSize Convertible Char CWchar Convertible Double Float Convertible Double Int Convertible Double Int8 Convertible Double Int16 Convertible Double Int32 Convertible Double Int64 Convertible Double Integer Convertible Double Rational Convertible Double Word Convertible Double Word8 Convertible Double Word16 Convertible Double Word32 Convertible Double Word64 Convertible Double CFloat Convertible Double CDouble Convertible Double CTime Convertible Double TimeDiff Convertible Double POSIXTime Convertible Double UTCTime Convertible Float Double Convertible Float Int Convertible Float Int8 Convertible Float Int16 Convertible Float Int32 Convertible Float Int64 Convertible Float Integer Convertible Float Rational Convertible Float Word Convertible Float Word8 Convertible Float Word16 Convertible Float Word32 Convertible Float Word64 Convertible Float CFloat Convertible Float CDouble Convertible Int Char Convertible Int Double Convertible Int Float Convertible Int Int8 Convertible Int Int16 Convertible Int Int32 Convertible Int Int64 Convertible Int Integer Convertible Int Rational Convertible Int Word Convertible Int Word8 Convertible Int Word16 Convertible Int Word32 Convertible Int Word64 Convertible Int CChar Convertible Int CSChar Convertible Int CUChar Convertible Int CShort Convertible Int CUShort Convertible Int CInt Convertible Int CUInt Convertible Int CLong Convertible Int CULong Convertible Int CLLong Convertible Int CULLong Convertible Int CFloat Convertible Int CDouble Convertible Int CSize Convertible Int CWchar Convertible Int CTime Convertible Int POSIXTime Convertible Int UTCTime Convertible Int8 Char Convertible Int8 Double Convertible Int8 Float Convertible Int8 Int Convertible Int8 Int16 Convertible Int8 Int32 Convertible Int8 Int64 Convertible Int8 Integer Convertible Int8 Rational Convertible Int8 Word Convertible Int8 Word8 Convertible Int8 Word16 Convertible Int8 Word32 Convertible Int8 Word64 Convertible Int8 CChar Convertible Int8 CSChar Convertible Int8 CUChar Convertible Int8 CShort Convertible Int8 CUShort Convertible Int8 CInt Convertible Int8 CUInt Convertible Int8 CLong Convertible Int8 CULong Convertible Int8 CLLong Convertible Int8 CULLong Convertible Int8 CFloat Convertible Int8 CDouble Convertible Int8 CSize Convertible Int8 CWchar Convertible Int16 Char Convertible Int16 Double Convertible Int16 Float Convertible Int16 Int Convertible Int16 Int8 Convertible Int16 Int32 Convertible Int16 Int64 Convertible Int16 Integer Convertible Int16 Rational Convertible Int16 Word Convertible Int16 Word8 Convertible Int16 Word16 Convertible Int16 Word32 Convertible Int16 Word64 Convertible Int16 CChar Convertible Int16 CSChar Convertible Int16 CUChar Convertible Int16 CShort Convertible Int16 CUShort Convertible Int16 CInt Convertible Int16 CUInt Convertible Int16 CLong Convertible Int16 CULong Convertible Int16 CLLong Convertible Int16 CULLong Convertible Int16 CFloat Convertible Int16 CDouble Convertible Int16 CSize Convertible Int16 CWchar Convertible Int32 Char Convertible Int32 Double Convertible Int32 Float Convertible Int32 Int Convertible Int32 Int8 Convertible Int32 Int16 Convertible Int32 Int64 Convertible Int32 Integer Convertible Int32 Rational Convertible Int32 Word Convertible Int32 Word8 Convertible Int32 Word16 Convertible Int32 Word32 Convertible Int32 Word64 Convertible Int32 CChar Convertible Int32 CSChar Convertible Int32 CUChar Convertible Int32 CShort Convertible Int32 CUShort Convertible Int32 CInt Convertible Int32 CUInt Convertible Int32 CLong Convertible Int32 CULong Convertible Int32 CLLong Convertible Int32 CULLong Convertible Int32 CFloat Convertible Int32 CDouble Convertible Int32 CSize Convertible Int32 CWchar Convertible Int64 Char Convertible Int64 Double Convertible Int64 Float Convertible Int64 Int Convertible Int64 Int8 Convertible Int64 Int16 Convertible Int64 Int32 Convertible Int64 Integer Convertible Int64 Rational Convertible Int64 Word Convertible Int64 Word8 Convertible Int64 Word16 Convertible Int64 Word32 Convertible Int64 Word64 Convertible Int64 CChar Convertible Int64 CSChar Convertible Int64 CUChar Convertible Int64 CShort Convertible Int64 CUShort Convertible Int64 CInt Convertible Int64 CUInt Convertible Int64 CLong Convertible Int64 CULong Convertible Int64 CLLong Convertible Int64 CULLong Convertible Int64 CFloat Convertible Int64 CDouble Convertible Int64 CSize Convertible Int64 CWchar Convertible Integer Char Convertible Integer Double Convertible Integer Float Convertible Integer Int Convertible Integer Int8 Convertible Integer Int16 Convertible Integer Int32 Convertible Integer Int64 Convertible Integer Integer Convertible Integer Rational Convertible Integer Word Convertible Integer Word8 Convertible Integer Word16 Convertible Integer Word32 Convertible Integer Word64 Convertible Integer CChar Convertible Integer CSChar Convertible Integer CUChar Convertible Integer CShort Convertible Integer CUShort Convertible Integer CInt Convertible Integer CUInt Convertible Integer CLong Convertible Integer CULong Convertible Integer CLLong Convertible Integer CULLong Convertible Integer CFloat Convertible Integer CDouble Convertible Integer CSize Convertible Integer CWchar Convertible Integer CTime Convertible Integer ClockTime Convertible Integer TimeDiff Convertible Integer POSIXTime Convertible Integer UTCTime Convertible Rational Double Convertible Rational Float Convertible Rational Int Convertible Rational Int8 Convertible Rational Int16 Convertible Rational Int32 Convertible Rational Int64 Convertible Rational Integer Convertible Rational Word Convertible Rational Word8 Convertible Rational Word16 Convertible Rational Word32 Convertible Rational Word64 Convertible Rational CFloat Convertible Rational CDouble Convertible Rational POSIXTime Convertible Rational UTCTime Convertible Word Char Convertible Word Double Convertible Word Float Convertible Word Int Convertible Word Int8 Convertible Word Int16 Convertible Word Int32 Convertible Word Int64 Convertible Word Integer Convertible Word Rational Convertible Word Word8 Convertible Word Word16 Convertible Word Word32 Convertible Word Word64 Convertible Word CChar Convertible Word CSChar Convertible Word CUChar Convertible Word CShort Convertible Word CUShort Convertible Word CInt Convertible Word CUInt Convertible Word CLong Convertible Word CULong Convertible Word CLLong Convertible Word CULLong Convertible Word CFloat Convertible Word CDouble Convertible Word CSize Convertible Word CWchar Convertible Word8 Char Convertible Word8 Double Convertible Word8 Float Convertible Word8 Int Convertible Word8 Int8 Convertible Word8 Int16 Convertible Word8 Int32 Convertible Word8 Int64 Convertible Word8 Integer Convertible Word8 Rational Convertible Word8 Word Convertible Word8 Word16 Convertible Word8 Word32 Convertible Word8 Word64 Convertible Word8 CChar Convertible Word8 CSChar Convertible Word8 CUChar Convertible Word8 CShort Convertible Word8 CUShort Convertible Word8 CInt Convertible Word8 CUInt Convertible Word8 CLong Convertible Word8 CULong Convertible Word8 CLLong Convertible Word8 CULLong Convertible Word8 CFloat Convertible Word8 CDouble Convertible Word8 CSize Convertible Word8 CWchar Convertible Word16 Char Convertible Word16 Double Convertible Word16 Float Convertible Word16 Int Convertible Word16 Int8 Convertible Word16 Int16 Convertible Word16 Int32 Convertible Word16 Int64 Convertible Word16 Integer Convertible Word16 Rational Convertible Word16 Word Convertible Word16 Word8 Convertible Word16 Word32 Convertible Word16 Word64 Convertible Word16 CChar Convertible Word16 CSChar Convertible Word16 CUChar Convertible Word16 CShort Convertible Word16 CUShort Convertible Word16 CInt Convertible Word16 CUInt Convertible Word16 CLong Convertible Word16 CULong Convertible Word16 CLLong Convertible Word16 CULLong Convertible Word16 CFloat Convertible Word16 CDouble Convertible Word16 CSize Convertible Word16 CWchar Convertible Word32 Char Convertible Word32 Double Convertible Word32 Float Convertible Word32 Int Convertible Word32 Int8 Convertible Word32 Int16 Convertible Word32 Int32 Convertible Word32 Int64 Convertible Word32 Integer Convertible Word32 Rational Convertible Word32 Word Convertible Word32 Word8 Convertible Word32 Word16 Convertible Word32 Word64 Convertible Word32 CChar Convertible Word32 CSChar Convertible Word32 CUChar Convertible Word32 CShort Convertible Word32 CUShort Convertible Word32 CInt Convertible Word32 CUInt Convertible Word32 CLong Convertible Word32 CULong Convertible Word32 CLLong Convertible Word32 CULLong Convertible Word32 CFloat Convertible Word32 CDouble Convertible Word32 CSize Convertible Word32 CWchar Convertible Word64 Char Convertible Word64 Double Convertible Word64 Float Convertible Word64 Int Convertible Word64 Int8 Convertible Word64 Int16 Convertible Word64 Int32 Convertible Word64 Int64 Convertible Word64 Integer Convertible Word64 Rational Convertible Word64 Word Convertible Word64 Word8 Convertible Word64 Word16 Convertible Word64 Word32 Convertible Word64 CChar Convertible Word64 CSChar Convertible Word64 CUChar Convertible Word64 CShort Convertible Word64 CUShort Convertible Word64 CInt Convertible Word64 CUInt Convertible Word64 CLong Convertible Word64 CULong Convertible Word64 CLLong Convertible Word64 CULLong Convertible Word64 CFloat Convertible Word64 CDouble Convertible Word64 CSize Convertible Word64 CWchar Convertible CChar Char Convertible CChar Int Convertible CChar Int8 Convertible CChar Int16 Convertible CChar Int32 Convertible CChar Int64 Convertible CChar Integer Convertible CChar Word Convertible CChar Word8 Convertible CChar Word16 Convertible CChar Word32 Convertible CChar Word64 Convertible CChar CSChar Convertible CChar CUChar Convertible CChar CShort Convertible CChar CUShort Convertible CChar CInt Convertible CChar CUInt Convertible CChar CLong Convertible CChar CULong Convertible CChar CLLong Convertible CChar CULLong Convertible CChar CSize Convertible CChar CWchar Convertible CSChar Char Convertible CSChar Int Convertible CSChar Int8 Convertible CSChar Int16 Convertible CSChar Int32 Convertible CSChar Int64 Convertible CSChar Integer Convertible CSChar Word Convertible CSChar Word8 Convertible CSChar Word16 Convertible CSChar Word32 Convertible CSChar Word64 Convertible CSChar CChar Convertible CSChar CUChar Convertible CSChar CShort Convertible CSChar CUShort Convertible CSChar CInt Convertible CSChar CUInt Convertible CSChar CLong Convertible CSChar CULong Convertible CSChar CLLong Convertible CSChar CULLong Convertible CSChar CSize Convertible CSChar CWchar Convertible CUChar Char Convertible CUChar Int Convertible CUChar Int8 Convertible CUChar Int16 Convertible CUChar Int32 Convertible CUChar Int64 Convertible CUChar Integer Convertible CUChar Word Convertible CUChar Word8 Convertible CUChar Word16 Convertible CUChar Word32 Convertible CUChar Word64 Convertible CUChar CChar Convertible CUChar CSChar Convertible CUChar CShort Convertible CUChar CUShort Convertible CUChar CInt Convertible CUChar CUInt Convertible CUChar CLong Convertible CUChar CULong Convertible CUChar CLLong Convertible CUChar CULLong Convertible CUChar CSize Convertible CUChar CWchar Convertible CShort Char Convertible CShort Int Convertible CShort Int8 Convertible CShort Int16 Convertible CShort Int32 Convertible CShort Int64 Convertible CShort Integer Convertible CShort Word Convertible CShort Word8 Convertible CShort Word16 Convertible CShort Word32 Convertible CShort Word64 Convertible CShort CChar Convertible CShort CSChar Convertible CShort CUChar Convertible CShort CUShort Convertible CShort CInt Convertible CShort CUInt Convertible CShort CLong Convertible CShort CULong Convertible CShort CLLong Convertible CShort CULLong Convertible CShort CSize Convertible CShort CWchar Convertible CUShort Char Convertible CUShort Int Convertible CUShort Int8 Convertible CUShort Int16 Convertible CUShort Int32 Convertible CUShort Int64 Convertible CUShort Integer Convertible CUShort Word Convertible CUShort Word8 Convertible CUShort Word16 Convertible CUShort Word32 Convertible CUShort Word64 Convertible CUShort CChar Convertible CUShort CSChar Convertible CUShort CUChar Convertible CUShort CShort Convertible CUShort CInt Convertible CUShort CUInt Convertible CUShort CLong Convertible CUShort CULong Convertible CUShort CLLong Convertible CUShort CULLong Convertible CUShort CSize Convertible CUShort CWchar Convertible CInt Char Convertible CInt Int Convertible CInt Int8 Convertible CInt Int16 Convertible CInt Int32 Convertible CInt Int64 Convertible CInt Integer Convertible CInt Word Convertible CInt Word8 Convertible CInt Word16 Convertible CInt Word32 Convertible CInt Word64 Convertible CInt CChar Convertible CInt CSChar Convertible CInt CUChar Convertible CInt CShort Convertible CInt CUShort Convertible CInt CUInt Convertible CInt CLong Convertible CInt CULong Convertible CInt CLLong Convertible CInt CULLong Convertible CInt CSize Convertible CInt CWchar Convertible CUInt Char Convertible CUInt Int Convertible CUInt Int8 Convertible CUInt Int16 Convertible CUInt Int32 Convertible CUInt Int64 Convertible CUInt Integer Convertible CUInt Word Convertible CUInt Word8 Convertible CUInt Word16 Convertible CUInt Word32 Convertible CUInt Word64 Convertible CUInt CChar Convertible CUInt CSChar Convertible CUInt CUChar Convertible CUInt CShort Convertible CUInt CUShort Convertible CUInt CInt Convertible CUInt CLong Convertible CUInt CULong Convertible CUInt CLLong Convertible CUInt CULLong Convertible CUInt CSize Convertible CUInt CWchar Convertible CLong Char Convertible CLong Int Convertible CLong Int8 Convertible CLong Int16 Convertible CLong Int32 Convertible CLong Int64 Convertible CLong Integer Convertible CLong Word Convertible CLong Word8 Convertible CLong Word16 Convertible CLong Word32 Convertible CLong Word64 Convertible CLong CChar Convertible CLong CSChar Convertible CLong CUChar Convertible CLong CShort Convertible CLong CUShort Convertible CLong CInt Convertible CLong CUInt Convertible CLong CULong Convertible CLong CLLong Convertible CLong CULLong Convertible CLong CSize Convertible CLong CWchar Convertible CULong Char Convertible CULong Int Convertible CULong Int8 Convertible CULong Int16 Convertible CULong Int32 Convertible CULong Int64 Convertible CULong Integer Convertible CULong Word Convertible CULong Word8 Convertible CULong Word16 Convertible CULong Word32 Convertible CULong Word64 Convertible CULong CChar Convertible CULong CSChar Convertible CULong CUChar Convertible CULong CShort Convertible CULong CUShort Convertible CULong CInt Convertible CULong CUInt Convertible CULong CLong Convertible CULong CLLong Convertible CULong CULLong Convertible CULong CSize Convertible CULong CWchar Convertible CLLong Char Convertible CLLong Int Convertible CLLong Int8 Convertible CLLong Int16 Convertible CLLong Int32 Convertible CLLong Int64 Convertible CLLong Integer Convertible CLLong Word Convertible CLLong Word8 Convertible CLLong Word16 Convertible CLLong Word32 Convertible CLLong Word64 Convertible CLLong CChar Convertible CLLong CSChar Convertible CLLong CUChar Convertible CLLong CShort Convertible CLLong CUShort Convertible CLLong CInt Convertible CLLong CUInt Convertible CLLong CLong Convertible CLLong CULong Convertible CLLong CULLong Convertible CLLong CSize Convertible CLLong CWchar Convertible CULLong Char Convertible CULLong Int Convertible CULLong Int8 Convertible CULLong Int16 Convertible CULLong Int32 Convertible CULLong Int64 Convertible CULLong Integer Convertible CULLong Word Convertible CULLong Word8 Convertible CULLong Word16 Convertible CULLong Word32 Convertible CULLong Word64 Convertible CULLong CChar Convertible CULLong CSChar Convertible CULLong CUChar Convertible CULLong CShort Convertible CULLong CUShort Convertible CULLong CInt Convertible CULLong CUInt Convertible CULLong CLong Convertible CULLong CULong Convertible CULLong CLLong Convertible CULLong CSize Convertible CULLong CWchar Convertible CFloat Double Convertible CFloat Float Convertible CFloat Int Convertible CFloat Int8 Convertible CFloat Int16 Convertible CFloat Int32 Convertible CFloat Int64 Convertible CFloat Integer Convertible CFloat Rational Convertible CFloat Word Convertible CFloat Word8 Convertible CFloat Word16 Convertible CFloat Word32 Convertible CFloat Word64 Convertible CFloat CDouble Convertible CDouble Double Convertible CDouble Float Convertible CDouble Int Convertible CDouble Int8 Convertible CDouble Int16 Convertible CDouble Int32 Convertible CDouble Int64 Convertible CDouble Integer Convertible CDouble Rational Convertible CDouble Word Convertible CDouble Word8 Convertible CDouble Word16 Convertible CDouble Word32 Convertible CDouble Word64 Convertible CDouble CFloat Convertible CSize Char Convertible CSize Int Convertible CSize Int8 Convertible CSize Int16 Convertible CSize Int32 Convertible CSize Int64 Convertible CSize Integer Convertible CSize Word Convertible CSize Word8 Convertible CSize Word16 Convertible CSize Word32 Convertible CSize Word64 Convertible CSize CChar Convertible CSize CSChar Convertible CSize CUChar Convertible CSize CShort Convertible CSize CUShort Convertible CSize CInt Convertible CSize CUInt Convertible CSize CLong Convertible CSize CULong Convertible CSize CLLong Convertible CSize CULLong Convertible CSize CWchar Convertible CWchar Char Convertible CWchar Int Convertible CWchar Int8 Convertible CWchar Int16 Convertible CWchar Int32 Convertible CWchar Int64 Convertible CWchar Integer Convertible CWchar Word Convertible CWchar Word8 Convertible CWchar Word16 Convertible CWchar Word32 Convertible CWchar Word64 Convertible CWchar CChar Convertible CWchar CSChar Convertible CWchar CUChar Convertible CWchar CShort Convertible CWchar CUShort Convertible CWchar CInt Convertible CWchar CUInt Convertible CWchar CLong Convertible CWchar CULong Convertible CWchar CLLong Convertible CWchar CULLong Convertible CWchar CSize Convertible CTime Double Convertible CTime Int Convertible CTime Integer Convertible CTime ClockTime Convertible CTime CalendarTime Convertible CTime ZonedTime Convertible CTime POSIXTime Convertible CTime UTCTime Convertible ClockTime Integer Convertible ClockTime CTime Convertible ClockTime CalendarTime Convertible ClockTime ZonedTime Convertible ClockTime POSIXTime Convertible ClockTime UTCTime Convertible CalendarTime CTime Convertible CalendarTime ClockTime Convertible CalendarTime ZonedTime Convertible CalendarTime POSIXTime Convertible CalendarTime UTCTime Convertible TimeDiff Double Convertible TimeDiff Integer Convertible TimeDiff Rational Convertible TimeDiff NominalDiffTime Convertible ZonedTime CTime Convertible ZonedTime ClockTime Convertible ZonedTime CalendarTime Convertible ZonedTime POSIXTime Convertible ZonedTime UTCTime Convertible POSIXTime Double Convertible POSIXTime Int Convertible POSIXTime Integer Convertible POSIXTime Rational Convertible POSIXTime CTime Convertible POSIXTime ClockTime Convertible POSIXTime CalendarTime Convertible POSIXTime ZonedTime Convertible POSIXTime UTCTime Convertible UTCTime Double Convertible UTCTime Int Convertible UTCTime Integer Convertible UTCTime Rational Convertible UTCTime CTime Convertible UTCTime ClockTime Convertible UTCTime CalendarTime Convertible UTCTime ZonedTime Convertible UTCTime POSIXTime Convertible NominalDiffTime TimeDiff Ord k => Convertible [(k, a)] (Map k a) Convertible (Map k a) [(k, a)]

Handling the results

type ConvertResult a = Either ConvertError a

The result of a safe conversion via safeConvert.

data ConvertError

How we indicate that there was an error. Constructors ConvertError convSourceValue :: String convSourceType :: String convDestType :: String convErrorMessage :: String Instances Eq ConvertError Read ConvertError Show ConvertError Error ConvertError

convError :: (Show a, Typeable a, Typeable b) => String -> a -> ConvertResult b

prettyConvertError :: ConvertError -> String

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