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<title>src/Data/List/Split/Lens.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-2"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : Data.List.Split.Lens</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (C) 2012-2014 Edward Kmett, Alexander Altman</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-8"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability : Rank2Types</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Lenses for working with Data.List.Split</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-14"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>Split</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-15"></a> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-comment'>-- * Splitting Folds</span>
<a name="line-17"></a> <span class='hs-varid'>splitting</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>splittingOn</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>splittingOneOf</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>splittingWhen</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endingBy</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>endingByOneOf</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>wordingBy</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>liningBy</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>chunking</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>splittingPlaces</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>splittingPlacesBlanks</span>
<a name="line-28"></a> <span class='hs-comment'>-- * Lenses for 'Splitter' Internals</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>delimiters</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>delimiting</span>
<a name="line-31"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>condensing</span>
<a name="line-32"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>keepInitialBlanks</span>
<a name="line-33"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>keepFinalBlanks</span>
<a name="line-34"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>Split</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>Split</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-comment'>-- $setup</span>
<a name="line-42"></a><span class='hs-comment'>-- >>> :set -XNoOverloadedStrings</span>
<a name="line-43"></a><span class='hs-comment'>-- >>> import Control.Lens</span>
<a name="line-44"></a><span class='hs-comment'>-- >>> import Numeric.Lens (hex)</span>
<a name="line-45"></a><span class='hs-comment'>-- >>> import Data.Char (chr)</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="splitting"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' according to the given splitting strategy.</span>
<a name="line-48"></a><span class='hs-comment'>--</span>
<a name="line-49"></a><span class='hs-comment'>-- @</span>
<a name="line-50"></a><span class='hs-comment'>-- 'splitting' :: 'Splitter' a -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-51"></a><span class='hs-comment'>-- @</span>
<a name="line-52"></a><span class='hs-definition'>splitting</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-53"></a><span class='hs-definition'>splitting</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>split</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-54"></a><span class='hs-comment'>{-# INLINE splitting #-}</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="splittingOn"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' on the given delimiter.</span>
<a name="line-57"></a><span class='hs-comment'>--</span>
<a name="line-58"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropDelims' '.' 'onSublist'@.</span>
<a name="line-59"></a><span class='hs-comment'>--</span>
<a name="line-60"></a><span class='hs-comment'>-- @</span>
<a name="line-61"></a><span class='hs-comment'>-- 'splittingOn' :: 'Eq' a => [a] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-62"></a><span class='hs-comment'>-- @</span>
<a name="line-63"></a><span class='hs-definition'>splittingOn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-64"></a><span class='hs-definition'>splittingOn</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>splitOn</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-65"></a><span class='hs-comment'>{-# INLINE splittingOn #-}</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="splittingOneOf"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' on any of the given elements.</span>
<a name="line-68"></a><span class='hs-comment'>--</span>
<a name="line-69"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropDelims' '.' 'oneOf'@.</span>
<a name="line-70"></a><span class='hs-comment'>--</span>
<a name="line-71"></a><span class='hs-comment'>-- @</span>
<a name="line-72"></a><span class='hs-comment'>-- 'splittingOn' :: 'Eq' a => [a] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-73"></a><span class='hs-comment'>-- @</span>
<a name="line-74"></a><span class='hs-definition'>splittingOneOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-75"></a><span class='hs-definition'>splittingOneOf</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>splitOneOf</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-76"></a><span class='hs-comment'>{-# INLINE splittingOneOf #-}</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="splittingWhen"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' on elements satisfying the given predicate.</span>
<a name="line-79"></a><span class='hs-comment'>--</span>
<a name="line-80"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropDelims' '.' 'whenElt'@.</span>
<a name="line-81"></a><span class='hs-comment'>--</span>
<a name="line-82"></a><span class='hs-comment'>-- @</span>
<a name="line-83"></a><span class='hs-comment'>-- 'splittingWhen' :: (a -> 'Bool') -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-84"></a><span class='hs-comment'>-- @</span>
<a name="line-85"></a><span class='hs-definition'>splittingWhen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-86"></a><span class='hs-definition'>splittingWhen</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>splitWhen</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-87"></a><span class='hs-comment'>{-# INLINE splittingWhen #-}</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="endingBy"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into chunks terminated by the given delimiter.</span>
<a name="line-90"></a><span class='hs-comment'>--</span>
<a name="line-91"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropDelims' '.' 'onSublist'@.</span>
<a name="line-92"></a><span class='hs-comment'>--</span>
<a name="line-93"></a><span class='hs-comment'>-- @</span>
<a name="line-94"></a><span class='hs-comment'>-- 'endingBy' :: 'Eq' a => [a] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-95"></a><span class='hs-comment'>-- @</span>
<a name="line-96"></a><span class='hs-definition'>endingBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-97"></a><span class='hs-definition'>endingBy</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>endBy</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-98"></a><span class='hs-comment'>{-# INLINE endingBy #-}</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="endingByOneOf"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into chunks terminated by any of the given elements.</span>
<a name="line-101"></a><span class='hs-comment'>--</span>
<a name="line-102"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropFinalBlank' '.' 'dropDelims' '.' 'oneOf'@.</span>
<a name="line-103"></a><span class='hs-comment'>--</span>
<a name="line-104"></a><span class='hs-comment'>-- @</span>
<a name="line-105"></a><span class='hs-comment'>-- 'endingByOneOf' :: 'Eq' a => [a] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-106"></a><span class='hs-comment'>-- @</span>
<a name="line-107"></a><span class='hs-definition'>endingByOneOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-108"></a><span class='hs-definition'>endingByOneOf</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>endByOneOf</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-109"></a><span class='hs-comment'>{-# INLINE endingByOneOf #-}</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="wordingBy"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into "words", with word boundaries indicated by the given predicate.</span>
<a name="line-112"></a><span class='hs-comment'>--</span>
<a name="line-113"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropBlanks' '.' 'dropDelims' '.' 'whenElt'@.</span>
<a name="line-114"></a><span class='hs-comment'>--</span>
<a name="line-115"></a><span class='hs-comment'>-- @</span>
<a name="line-116"></a><span class='hs-comment'>-- 'wordingBy' :: (a -> 'Bool') -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-117"></a><span class='hs-comment'>-- @</span>
<a name="line-118"></a><span class='hs-definition'>wordingBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-119"></a><span class='hs-definition'>wordingBy</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>wordsBy</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-120"></a><span class='hs-comment'>{-# INLINE wordingBy #-}</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="liningBy"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into "lines", with line boundaries indicated by the given predicate.</span>
<a name="line-123"></a><span class='hs-comment'>--</span>
<a name="line-124"></a><span class='hs-comment'>-- Equivalent to @'splitting' '.' 'dropFinalBlank' '.' 'dropDelims' '.' 'whenElt'@.</span>
<a name="line-125"></a><span class='hs-comment'>--</span>
<a name="line-126"></a><span class='hs-comment'>-- @</span>
<a name="line-127"></a><span class='hs-comment'>-- 'liningBy' :: (a -> 'Bool') -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-128"></a><span class='hs-comment'>-- @</span>
<a name="line-129"></a><span class='hs-definition'>liningBy</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-130"></a><span class='hs-definition'>liningBy</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>linesBy</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-131"></a><span class='hs-comment'>{-# INLINE liningBy #-}</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="chunking"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into length-@n@ pieces.</span>
<a name="line-134"></a><span class='hs-comment'>--</span>
<a name="line-135"></a><span class='hs-comment'>-- >>> "48656c6c6f20776f726c64"^..chunking 2 folded.hex.to chr</span>
<a name="line-136"></a><span class='hs-comment'>-- "Hello world"</span>
<a name="line-137"></a><span class='hs-comment'>--</span>
<a name="line-138"></a><span class='hs-comment'>-- @</span>
<a name="line-139"></a><span class='hs-comment'>-- 'chunking' :: 'Int' -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-140"></a><span class='hs-comment'>-- @</span>
<a name="line-141"></a><span class='hs-definition'>chunking</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ @n@</span>
<a name="line-142"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-143"></a><span class='hs-definition'>chunking</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>chunksOf</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-144"></a><span class='hs-comment'>{-# INLINE chunking #-}</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="splittingPlaces"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into chunks of the given lengths, .</span>
<a name="line-147"></a><span class='hs-comment'>--</span>
<a name="line-148"></a><span class='hs-comment'>-- @</span>
<a name="line-149"></a><span class='hs-comment'>-- 'splittingPlaces' :: 'Integral' n => [n] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-150"></a><span class='hs-comment'>-- @</span>
<a name="line-151"></a><span class='hs-definition'>splittingPlaces</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-152"></a><span class='hs-definition'>splittingPlaces</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>splitPlaces</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-153"></a><span class='hs-comment'>{-# INLINE splittingPlaces #-}</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="splittingPlacesBlanks"></a><span class='hs-comment'>-- | Obtain a 'Fold' by splitting another 'Fold', 'Lens', 'Getter' or 'Traversal' into chunks of the given lengths. Unlike 'splittingPlaces', the output 'Fold' will always be the same length as the first input argument.</span>
<a name="line-156"></a><span class='hs-comment'>--</span>
<a name="line-157"></a><span class='hs-comment'>-- @</span>
<a name="line-158"></a><span class='hs-comment'>-- 'splittingPlacesBlanks' :: 'Integral' n => [n] -> 'Fold' s a -> 'Fold' s [a]</span>
<a name="line-159"></a><span class='hs-comment'>-- @</span>
<a name="line-160"></a><span class='hs-definition'>splittingPlacesBlanks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Integral</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>n</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Getting</span> <span class='hs-layout'>(</span><span class='hs-conid'>Endo</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fold</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-161"></a><span class='hs-definition'>splittingPlacesBlanks</span> <span class='hs-varid'>s</span> <span class='hs-varid'>l</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>splitPlacesBlanks</span> <span class='hs-varid'>s</span> <span class='hs-varop'>.</span> <span class='hs-varid'>toListOf</span> <span class='hs-varid'>l</span>
<a name="line-162"></a><span class='hs-comment'>{-# INLINE splittingPlacesBlanks #-}</span>
<a name="line-163"></a>
<a name="line-164"></a><a name="delimiters"></a><span class='hs-comment'>-- | Modify or retrieve the list of delimiters for a 'Splitter'.</span>
<a name="line-165"></a><span class='hs-definition'>delimiters</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Lens</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-keyglyph'>]</span>
<a name="line-166"></a><span class='hs-definition'>delimiters</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Splitter</span> <span class='hs-layout'>{</span> <span class='hs-varid'>delimiter</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Delimiter</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ds</span> <span class='hs-varop'><&></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ds'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>delimiter</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Delimiter</span> <span class='hs-varid'>ds'</span> <span class='hs-layout'>}</span>
<a name="line-167"></a><span class='hs-comment'>{-# INLINE delimiters #-}</span>
<a name="line-168"></a>
<a name="line-169"></a><a name="delimiting"></a><span class='hs-comment'>-- | Modify or retrieve the policy for what a 'Splitter' to do with delimiters.</span>
<a name="line-170"></a><span class='hs-definition'>delimiting</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Lens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conid'>DelimPolicy</span>
<a name="line-171"></a><span class='hs-definition'>delimiting</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Splitter</span> <span class='hs-layout'>{</span> <span class='hs-varid'>delimPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span> <span class='hs-varop'><&></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>delimPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p'</span> <span class='hs-layout'>}</span>
<a name="line-172"></a><span class='hs-comment'>{-# INLINE delimiting #-}</span>
<a name="line-173"></a>
<a name="line-174"></a><a name="condensing"></a><span class='hs-comment'>-- | Modify or retrieve the policy for what a 'Splitter' should about consecutive delimiters.</span>
<a name="line-175"></a><span class='hs-definition'>condensing</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Lens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conid'>CondensePolicy</span>
<a name="line-176"></a><span class='hs-definition'>condensing</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Splitter</span> <span class='hs-layout'>{</span> <span class='hs-varid'>condensePolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span> <span class='hs-varop'><&></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>condensePolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p'</span> <span class='hs-layout'>}</span>
<a name="line-177"></a><span class='hs-comment'>{-# INLINE condensing #-}</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="keepInitialBlanks"></a><span class='hs-comment'>-- | Modify or retrieve the policy for whether a 'Splitter' should drop an initial blank.</span>
<a name="line-180"></a><span class='hs-definition'>keepInitialBlanks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Lens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conid'>Bool</span>
<a name="line-181"></a><span class='hs-definition'>keepInitialBlanks</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Splitter</span> <span class='hs-layout'>{</span> <span class='hs-varid'>initBlankPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>keeps</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'><&></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>initBlankPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>end</span> <span class='hs-varid'>p'</span> <span class='hs-layout'>}</span>
<a name="line-182"></a><span class='hs-comment'>{-# INLINE keepInitialBlanks #-}</span>
<a name="line-183"></a>
<a name="line-184"></a><a name="keepFinalBlanks"></a><span class='hs-comment'>-- | Modify or retrieve the policy for whether a 'Splitter' should drop a final blank.</span>
<a name="line-185"></a><span class='hs-definition'>keepFinalBlanks</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Lens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Splitter</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conid'>Bool</span>
<a name="line-186"></a><span class='hs-definition'>keepFinalBlanks</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-conid'>Splitter</span> <span class='hs-layout'>{</span> <span class='hs-varid'>finalBlankPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>keeps</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'><&></span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>finalBlankPolicy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>end</span> <span class='hs-varid'>p'</span> <span class='hs-layout'>}</span>
<a name="line-187"></a><span class='hs-comment'>{-# INLINE keepFinalBlanks #-}</span>
<a name="line-188"></a>
<a name="line-189"></a><span class='hs-comment'>-- utilities</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="end"></a><span class='hs-definition'>end</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>EndPolicy</span>
<a name="line-192"></a><span class='hs-definition'>end</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>KeepBlank</span>
<a name="line-193"></a><span class='hs-definition'>end</span> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DropBlank</span>
<a name="line-194"></a><span class='hs-comment'>{-# INLINE end #-}</span>
<a name="line-195"></a>
<a name="line-196"></a><a name="keeps"></a><span class='hs-definition'>keeps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>EndPolicy</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-197"></a><span class='hs-definition'>keeps</span> <span class='hs-conid'>KeepBlank</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-198"></a><span class='hs-definition'>keeps</span> <span class='hs-conid'>DropBlank</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-199"></a><span class='hs-comment'>{-# INLINE keeps #-}</span>
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