Modulererebase-1.21.2Haskell2010

GHC.IO.Encoding.Failure

1 type
6 values

Packagererebase-1.21.2
Exports7
LanguageHaskell2010
LicenceMIT
SourceFailure.hs

datadata CodingFailureMode

The CodingFailureMode is used to construct System.IO.TextEncodings, and specifies how they handle illegal sequences.

Constructors

ErrorOnCodingFailure
Throw an error when an illegal sequence is encountered
IgnoreCodingFailure
Attempt to ignore and recover if an illegal sequence is encountered
TransliterateCodingFailure
Replace with the closest visual match upon an illegal sequence
RoundtripFailure
Use the private-use escape mechanism to attempt to allow illegal sequences to be roundtripped.

Instances1Show

Show CodingFailureModeDefined in ghc-internal-9.1003.0 · GHC.Internal.IO.Encoding.Failure

valueisSurrogate :: Char -> Bool

Some characters are actually "surrogate" codepoints defined for use in UTF-16. We need to signal an invalid character if we detect them when encoding a sequence of Chars into Word8s because they won't give valid Unicode.

We may also need to signal an invalid character if we detect them when encoding a sequence of Chars into Word8s because the RoundtripFailure mode creates these to round-trip bytes through our internal UTF-16 encoding.

valuerecoverDecode#

:: CodingFailureMode
-> Buffer Word8
-> Buffer Char
-> State# RealWorld
-> (# State# RealWorld, Buffer Word8, Buffer Char #)

valuerecoverEncode#

:: CodingFailureMode
-> Buffer Char
-> Buffer Word8
-> State# RealWorld
-> (# State# RealWorld, Buffer Char, Buffer Word8 #)

valuecodingFailureModeSuffix :: CodingFailureMode -> String

valuerecoverDecode

valuerecoverEncode