Data.Text.Internal.Encoding.Utf8

Copyright	(c) 2008 2009 Tom Harper (c) 2009 2010 Bryan O'Sullivan (c) 2009 Duncan Coutts (c) 2021 Andrew Lelechenko
License	BSD-style
Maintainer	bos@serpentine.com
Stability	experimental
Portability	GHC
Safe Haskell	Safe-Inferred
Language	Haskell2010

Description

Warning: this is an internal module, and does not have a stable API or name. Functions in this module may not check or enforce preconditions expected by public modules. Use at your own risk!

Basic UTF-8 validation and character manipulation.

utf8Length :: Char -> Int Source

Since: text-2.0

utf8LengthByLeader :: Word8 -> Int Source

Since: text-2.0

ord2 :: Char -> (Word8, Word8) Source

ord3 :: Char -> (Word8, Word8, Word8) Source

ord4 :: Char -> (Word8, Word8, Word8, Word8) Source

chr2 :: Word8 -> Word8 -> Char Source

chr3 :: Word8 -> Word8 -> Word8 -> Char Source

chr4 :: Word8 -> Word8 -> Word8 -> Word8 -> Char Source

Validation

validate1 :: Word8 -> Bool Source

validate2 :: Word8 -> Word8 -> Bool Source

validate3 :: Word8 -> Word8 -> Word8 -> Bool Source

validate4 :: Word8 -> Word8 -> Word8 -> Word8 -> Bool Source

Naive decoding

data DecoderResult Source

Since: text-2.0

Constructors

Accept !Char
Incomplete !DecoderState !CodePoint
Reject

newtype DecoderState Source

Constructors

DecoderState Word8

Instances

Instances details

Eq DecoderState Source
Instance details Defined in Data.Text.Internal.Encoding.Utf8 Methods (==) :: DecoderState -> DecoderState -> Bool Source (/=) :: DecoderState -> DecoderState -> Bool Source