Copyright	(c) Tom Harper 2008-2009 (c) Bryan O'Sullivan 2009 (c) Duncan Coutts 2009 (c) Jasper Van der Jeugt 2011
License	BSD-style
Maintainer	bos@serpentine.com
Stability	experimental
Portability	GHC
Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Text.Internal.Fusion.Types

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!

Core stream fusion functionality for text.

Synopsis

data CC s = CC !s !Int64
data PairS a b = !a :*: !b
data Scan s
- = Scan1 !Char !s
- | Scan2 !Char !s
data RS s
- = RS0 !s
- | RS1 !s !Word8
- | RS2 !s !Word8 !Word8
- | RS3 !s !Word8 !Word8 !Word8
data Step s a
- = Done
- | Skip !s
- | Yield !a !s
data Stream a = forall s. Stream (s -> Step s a) !s !Size
empty :: Stream a

Documentation

data CC s Source #

Specialised tuple for case conversion.

Constructors

CC !s !Int64

data PairS a b Source #

Strict pair.

Constructors

!a :*: !b infixl 2

data Scan s Source #

An intermediate result in a scan.

Constructors

Scan1 !Char !s
Scan2 !Char !s

data RS s Source #

Restreaming state.

Constructors

RS0 !s
RS1 !s !Word8
RS2 !s !Word8 !Word8
RS3 !s !Word8 !Word8 !Word8

data Step s a Source #

Intermediate result in a processing pipeline.

Constructors

Done
Skip !s
Yield !a !s

data Stream a Source #

A co-recursive type yielding a single element at a time depending on the internal state it carries.

Constructors

forall s. Stream (s -> Step s a) !s !Size

Instances

Instances details

Eq a => Eq (Stream a) Source #
Instance details Defined in Data.Text.Internal.Fusion.Types Methods (==) :: Stream a -> Stream a -> Bool # (/=) :: Stream a -> Stream a -> Bool #
Ord a => Ord (Stream a) Source #
Instance details Defined in Data.Text.Internal.Fusion.Types Methods compare :: Stream a -> Stream a -> Ordering # (<) :: Stream a -> Stream a -> Bool # (<=) :: Stream a -> Stream a -> Bool # (>) :: Stream a -> Stream a -> Bool # (>=) :: Stream a -> Stream a -> Bool # max :: Stream a -> Stream a -> Stream a # min :: Stream a -> Stream a -> Stream a #

empty :: Stream a Source #

The empty stream.