Copyright	Bryan O'Sullivan 2007-2015
License	BSD3
Maintainer	bos@serpentine.com
Stability	experimental
Portability	GHC
Safe Haskell	None
Language	Haskell2010

Data.Attoparsec.Text.Buffer

Description

An immutable buffer that supports cheap appends.

Synopsis

data Buffer
buffer :: Text -> Buffer
unbuffer :: Buffer -> Text
unbufferAt :: Int -> Buffer -> Text
length :: Buffer -> Int
pappend :: Buffer -> Text -> Buffer
iter :: Buffer -> Int -> Iter
iter_ :: Buffer -> Int -> Int
substring :: Int -> Int -> Buffer -> Text
lengthCodeUnits :: Text -> Int
dropCodeUnits :: Int -> Buffer -> Text

Documentation

data Buffer Source #

Instances

Instances details

Show Buffer Source #
Instance details Defined in Data.Attoparsec.Text.Buffer Methods showsPrec :: Int -> Buffer -> ShowS # show :: Buffer -> String # showList :: [Buffer] -> ShowS #
Semigroup Buffer Source #
Instance details Defined in Data.Attoparsec.Text.Buffer Methods (<>) :: Buffer -> Buffer -> Buffer # sconcat :: NonEmpty Buffer -> Buffer # stimes :: Integral b => b -> Buffer -> Buffer #
Monoid Buffer Source #
Instance details Defined in Data.Attoparsec.Text.Buffer Methods mempty :: Buffer # mappend :: Buffer -> Buffer -> Buffer # mconcat :: [Buffer] -> Buffer #

buffer :: Text -> Buffer Source #

The initial Buffer has no mutable zone, so we can avoid all copies in the (hopefully) common case of no further input being fed to us.

unbuffer :: Buffer -> Text Source #

unbufferAt :: Int -> Buffer -> Text Source #

length :: Buffer -> Int Source #

pappend :: Buffer -> Text -> Buffer Source #

iter :: Buffer -> Int -> Iter Source #

O(1) Iterate (unsafely) one step forwards through a UTF-8 array, returning the current character and the delta to add to give the next offset to iterate at.

iter_ :: Buffer -> Int -> Int Source #

O(1) Iterate one step through a UTF-8 array, returning the delta to add to give the next offset to iterate at.

substring :: Int -> Int -> Buffer -> Text Source #

lengthCodeUnits :: Text -> Int Source #

dropCodeUnits :: Int -> Buffer -> Text Source #