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<title>src/Control/Lens/Internal/Context.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE TypeFamilies #-}</span>
<a name="line-4"></a><span class='hs-comment'>{-# LANGUAGE KindSignatures #-}</span>
<a name="line-5"></a><span class='hs-comment'>{-# LANGUAGE FlexibleContexts #-}</span>
<a name="line-6"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances #-}</span>
<a name="line-7"></a><span class='hs-comment'>{-# LANGUAGE MultiParamTypeClasses #-}</span>
<a name="line-8"></a><span class='hs-comment'>{-# LANGUAGE FunctionalDependencies #-}</span>
<a name="line-9"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 707</span>
<a name="line-10"></a><span class='hs-comment'>{-# LANGUAGE RoleAnnotations #-}</span>
<a name="line-11"></a><span class='hs-cpp'>#endif</span>
<a name="line-12"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 711</span>
<a name="line-13"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}</span>
<a name="line-14"></a><span class='hs-cpp'>#endif</span>
<a name="line-15"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-16"></a><span class='hs-comment'>-- |</span>
<a name="line-17"></a><span class='hs-comment'>-- Module : Control.Lens.Internal.Context</span>
<a name="line-18"></a><span class='hs-comment'>-- Copyright : (C) 2012-2015 Edward Kmett</span>
<a name="line-19"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-20"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-21"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-22"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-23"></a><span class='hs-comment'>--</span>
<a name="line-24"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-25"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Context</span>
<a name="line-26"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>IndexedFunctor</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>IndexedComonad</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>IndexedComonadStore</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Sellable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-30"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Context</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Context'</span>
<a name="line-31"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Pretext</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Pretext'</span>
<a name="line-32"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>PretextT</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>PretextT'</span>
<a name="line-33"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-34"></a>
<a name="line-35"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
<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'>Arrow</span>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Category</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Comonad</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Comonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Store</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Indexed</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Functor</span><span class='hs-varop'>.</span><span class='hs-conid'>Compose</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Functor</span><span class='hs-varop'>.</span><span class='hs-conid'>Contravariant</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Functor</span><span class='hs-varop'>.</span><span class='hs-conid'>Identity</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Profunctor</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Profunctor</span><span class='hs-varop'>.</span><span class='hs-conid'>Rep</span>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Profunctor</span><span class='hs-varop'>.</span><span class='hs-conid'>Sieve</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Profunctor</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>.</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-varid'>id</span><span class='hs-layout'>)</span>
<a name="line-49"></a>
<a name="line-50"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-51"></a><span class='hs-comment'>-- IndexedFunctor</span>
<a name="line-52"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- | This is a Bob Atkey -style 2-argument indexed functor.</span>
<a name="line-55"></a><a name="IndexedComonad"></a><span class='hs-comment'>--</span>
<a name="line-56"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- It exists as a superclass for 'IndexedComonad' and expresses the functoriality</span>
<a name="line-57"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- of an 'IndexedComonad' in its third argument.</span>
<a name="line-58"></a><a name="IndexedComonad"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>IndexedFunctor</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>where</span>
<a name="line-59"></a> <span class='hs-varid'>ifmap</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span>
<a name="line-60"></a>
<a name="line-61"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-62"></a><span class='hs-comment'>-- IndexedComonad</span>
<a name="line-63"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- | This is a Bob Atkey -style 2-argument indexed comonad.</span>
<a name="line-66"></a><a name="IndexedComonad"></a><span class='hs-comment'>--</span>
<a name="line-67"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- It exists as a superclass for 'IndexedComonad' and expresses the functoriality</span>
<a name="line-68"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- of an 'IndexedComonad' in its third argument.</span>
<a name="line-69"></a><a name="IndexedComonad"></a><span class='hs-comment'>--</span>
<a name="line-70"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- The notion of indexed monads is covered in more depth in Bob Atkey's</span>
<a name="line-71"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- "Parameterized Notions of Computation" <<a href="http://bentnib.org/paramnotions-jfp.pdf">http://bentnib.org/paramnotions-jfp.pdf</a>></span>
<a name="line-72"></a><a name="IndexedComonad"></a><span class='hs-comment'>-- and that construction is dualized here.</span>
<a name="line-73"></a><a name="IndexedComonad"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>IndexedFunctor</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonad</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>where</span>
<a name="line-74"></a> <span class='hs-comment'>-- | extract from an indexed comonadic value when the indices match.</span>
<a name="line-75"></a> <span class='hs-varid'>iextract</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-76"></a>
<a name="line-77"></a> <span class='hs-comment'>-- | duplicate an indexed comonadic value splitting the index.</span>
<a name="line-78"></a> <span class='hs-varid'>iduplicate</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-79"></a> <span class='hs-varid'>iduplicate</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iextend</span> <span class='hs-varid'>id</span>
<a name="line-80"></a> <span class='hs-comment'>{-# INLINE iduplicate #-}</span>
<a name="line-81"></a>
<a name="line-82"></a> <span class='hs-comment'>-- | extend a indexed comonadic computation splitting the index.</span>
<a name="line-83"></a> <span class='hs-varid'>iextend</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>r</span>
<a name="line-84"></a> <span class='hs-varid'>iextend</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ifmap</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>iduplicate</span>
<a name="line-85"></a> <span class='hs-comment'>{-# INLINE iextend #-}</span>
<a name="line-86"></a>
<a name="line-87"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-88"></a><span class='hs-comment'>-- IndexedComonadStore</span>
<a name="line-89"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="IndexedComonadStore"></a><span class='hs-comment'>-- | This is an indexed analogue to 'ComonadStore' for when you are working with an</span>
<a name="line-92"></a><a name="IndexedComonadStore"></a><span class='hs-comment'>-- 'IndexedComonad'.</span>
<a name="line-93"></a><a name="IndexedComonadStore"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>IndexedComonad</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonadStore</span> <span class='hs-varid'>w</span> <span class='hs-keyword'>where</span>
<a name="line-94"></a> <span class='hs-comment'>-- | This is the generalization of 'pos' to an indexed comonad store.</span>
<a name="line-95"></a> <span class='hs-varid'>ipos</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span>
<a name="line-96"></a>
<a name="line-97"></a> <span class='hs-comment'>-- | This is the generalization of 'peek' to an indexed comonad store.</span>
<a name="line-98"></a> <span class='hs-varid'>ipeek</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-99"></a> <span class='hs-varid'>ipeek</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iextract</span> <span class='hs-varop'>.</span> <span class='hs-varid'>iseek</span> <span class='hs-varid'>c</span>
<a name="line-100"></a> <span class='hs-comment'>{-# INLINE ipeek #-}</span>
<a name="line-101"></a>
<a name="line-102"></a> <span class='hs-comment'>-- | This is the generalization of 'peeks' to an indexed comonad store.</span>
<a name="line-103"></a> <span class='hs-varid'>ipeeks</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-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-104"></a> <span class='hs-varid'>ipeeks</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iextract</span> <span class='hs-varop'>.</span> <span class='hs-varid'>iseeks</span> <span class='hs-varid'>f</span>
<a name="line-105"></a> <span class='hs-comment'>{-# INLINE ipeeks #-}</span>
<a name="line-106"></a>
<a name="line-107"></a> <span class='hs-comment'>-- | This is the generalization of 'seek' to an indexed comonad store.</span>
<a name="line-108"></a> <span class='hs-varid'>iseek</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span>
<a name="line-109"></a>
<a name="line-110"></a> <span class='hs-comment'>-- | This is the generalization of 'seeks' to an indexed comonad store.</span>
<a name="line-111"></a> <span class='hs-varid'>iseeks</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-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-comment'>-- | This is the generalization of 'experiment' to an indexed comonad store.</span>
<a name="line-114"></a> <span class='hs-varid'>iexperiment</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Functor</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>w</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span>
<a name="line-115"></a> <span class='hs-varid'>iexperiment</span> <span class='hs-varid'>bfc</span> <span class='hs-varid'>wbct</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>`ipeek`</span> <span class='hs-varid'>wbct</span><span class='hs-layout'>)</span> <span class='hs-varop'><$></span> <span class='hs-varid'>bfc</span> <span class='hs-layout'>(</span><span class='hs-varid'>ipos</span> <span class='hs-varid'>wbct</span><span class='hs-layout'>)</span>
<a name="line-116"></a> <span class='hs-comment'>{-# INLINE iexperiment #-}</span>
<a name="line-117"></a>
<a name="line-118"></a> <span class='hs-comment'>-- | We can always forget the rest of the structure of 'w' and obtain a simpler</span>
<a name="line-119"></a> <span class='hs-comment'>-- indexed comonad store model called 'Context'.</span>
<a name="line-120"></a> <span class='hs-varid'>context</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span>
<a name="line-121"></a> <span class='hs-varid'>context</span> <span class='hs-varid'>wabt</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varop'>`ipeek`</span> <span class='hs-varid'>wabt</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>ipos</span> <span class='hs-varid'>wabt</span><span class='hs-layout'>)</span>
<a name="line-122"></a> <span class='hs-comment'>{-# INLINE context #-}</span>
<a name="line-123"></a>
<a name="line-124"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-125"></a><span class='hs-comment'>-- Sellable</span>
<a name="line-126"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="Sellable"></a><span class='hs-comment'>-- | This is used internally to construct a 'Control.Lens.Internal.Bazaar.Bazaar', 'Context' or 'Pretext'</span>
<a name="line-129"></a><a name="Sellable"></a><span class='hs-comment'>-- from a singleton value.</span>
<a name="line-130"></a><a name="Sellable"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Corepresentable</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Sellable</span> <span class='hs-varid'>p</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-keyword'>where</span>
<a name="line-131"></a> <span class='hs-varid'>sell</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-132"></a>
<a name="line-133"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-134"></a><span class='hs-comment'>-- Context</span>
<a name="line-135"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="Context"></a><span class='hs-comment'>-- | The indexed store can be used to characterize a 'Control.Lens.Lens.Lens'</span>
<a name="line-138"></a><a name="Context"></a><span class='hs-comment'>-- and is used by 'Control.Lens.Lens.clone'.</span>
<a name="line-139"></a><a name="Context"></a><span class='hs-comment'>--</span>
<a name="line-140"></a><a name="Context"></a><span class='hs-comment'>-- @'Context' a b t@ is isomorphic to</span>
<a name="line-141"></a><a name="Context"></a><span class='hs-comment'>-- @newtype 'Context' a b t = 'Context' { runContext :: forall f. 'Functor' f => (a -> f b) -> f t }@,</span>
<a name="line-142"></a><a name="Context"></a><span class='hs-comment'>-- and to @exists s. (s, 'Control.Lens.Lens.Lens' s t a b)@.</span>
<a name="line-143"></a><a name="Context"></a><span class='hs-comment'>--</span>
<a name="line-144"></a><a name="Context"></a><span class='hs-comment'>-- A 'Context' is like a 'Control.Lens.Lens.Lens' that has already been applied to a some structure.</span>
<a name="line-145"></a><a name="Context"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-146"></a><span class='hs-comment'>-- type role Context representational representational representational</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="instance%20IndexedFunctor%20Context"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IndexedFunctor</span> <span class='hs-conid'>Context</span> <span class='hs-keyword'>where</span>
<a name="line-149"></a> <span class='hs-varid'>ifmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span>
<a name="line-150"></a> <span class='hs-comment'>{-# INLINE ifmap #-}</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="instance%20IndexedComonad%20Context"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IndexedComonad</span> <span class='hs-conid'>Context</span> <span class='hs-keyword'>where</span>
<a name="line-153"></a> <span class='hs-varid'>iextract</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-154"></a> <span class='hs-comment'>{-# INLINE iextract #-}</span>
<a name="line-155"></a> <span class='hs-varid'>iduplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-156"></a> <span class='hs-comment'>{-# INLINE iduplicate #-}</span>
<a name="line-157"></a> <span class='hs-varid'>iextend</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varid'>g</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-158"></a> <span class='hs-comment'>{-# INLINE iextend #-}</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="instance%20IndexedComonadStore%20Context"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IndexedComonadStore</span> <span class='hs-conid'>Context</span> <span class='hs-keyword'>where</span>
<a name="line-161"></a> <span class='hs-varid'>ipos</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-162"></a> <span class='hs-comment'>{-# INLINE ipos #-}</span>
<a name="line-163"></a> <span class='hs-varid'>ipeek</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>g</span> <span class='hs-varid'>b</span>
<a name="line-164"></a> <span class='hs-comment'>{-# INLINE ipeek #-}</span>
<a name="line-165"></a> <span class='hs-varid'>ipeeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-166"></a> <span class='hs-comment'>{-# INLINE ipeeks #-}</span>
<a name="line-167"></a> <span class='hs-varid'>iseek</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span>
<a name="line-168"></a> <span class='hs-comment'>{-# INLINE iseek #-}</span>
<a name="line-169"></a> <span class='hs-varid'>iseeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-170"></a> <span class='hs-comment'>{-# INLINE iseeks #-}</span>
<a name="line-171"></a> <span class='hs-varid'>iexperiment</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>g</span> <span class='hs-varop'><$></span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-172"></a> <span class='hs-comment'>{-# INLINE iexperiment #-}</span>
<a name="line-173"></a> <span class='hs-varid'>context</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-174"></a> <span class='hs-comment'>{-# INLINE context #-}</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="instance%20Functor%20(Context%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-177"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>g</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span>
<a name="line-178"></a> <span class='hs-comment'>{-# INLINE fmap #-}</span>
<a name="line-179"></a>
<a name="line-180"></a><a name="instance%20Comonad%20(Context%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Comonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-181"></a> <span class='hs-varid'>extract</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-182"></a> <span class='hs-comment'>{-# INLINE extract #-}</span>
<a name="line-183"></a> <span class='hs-varid'>duplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-184"></a> <span class='hs-comment'>{-# INLINE duplicate #-}</span>
<a name="line-185"></a> <span class='hs-varid'>extend</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-layout'>(</span><span class='hs-varid'>g</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span>
<a name="line-186"></a> <span class='hs-comment'>{-# INLINE extend #-}</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="instance%20ComonadStore%20a%20(Context%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ComonadStore</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-189"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipos</span>
<a name="line-190"></a> <span class='hs-comment'>{-# INLINE pos #-}</span>
<a name="line-191"></a> <span class='hs-varid'>peek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeek</span>
<a name="line-192"></a> <span class='hs-comment'>{-# INLINE peek #-}</span>
<a name="line-193"></a> <span class='hs-varid'>peeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeeks</span>
<a name="line-194"></a> <span class='hs-comment'>{-# INLINE peeks #-}</span>
<a name="line-195"></a> <span class='hs-varid'>seek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseek</span>
<a name="line-196"></a> <span class='hs-comment'>{-# INLINE seek #-}</span>
<a name="line-197"></a> <span class='hs-varid'>seeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseeks</span>
<a name="line-198"></a> <span class='hs-comment'>{-# INLINE seeks #-}</span>
<a name="line-199"></a> <span class='hs-varid'>experiment</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iexperiment</span>
<a name="line-200"></a> <span class='hs-comment'>{-# INLINE experiment #-}</span>
<a name="line-201"></a>
<a name="line-202"></a><a name="instance%20Sellable%20(-%3e)%20Context"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Sellable</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>-></span><span class='hs-layout'>)</span> <span class='hs-conid'>Context</span> <span class='hs-keyword'>where</span>
<a name="line-203"></a> <span class='hs-varid'>sell</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>id</span>
<a name="line-204"></a> <span class='hs-comment'>{-# INLINE sell #-}</span>
<a name="line-205"></a>
<a name="line-206"></a><a name="Context'"></a><span class='hs-comment'>-- | @type 'Context'' a s = 'Context' a a s@</span>
<a name="line-207"></a><a name="Context'"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Context'</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Context</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span>
<a name="line-208"></a>
<a name="line-209"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-210"></a><span class='hs-comment'>-- Pretext</span>
<a name="line-211"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-212"></a>
<a name="line-213"></a><a name="Pretext"></a><span class='hs-comment'>-- | This is a generalized form of 'Context' that can be repeatedly cloned with less</span>
<a name="line-214"></a><a name="Pretext"></a><span class='hs-comment'>-- impact on its performance, and which permits the use of an arbitrary 'Conjoined'</span>
<a name="line-215"></a><a name="Pretext"></a><span class='hs-comment'>-- 'Profunctor'</span>
<a name="line-216"></a><a name="Pretext"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pretext</span> <span class='hs-layout'>{</span> <span class='hs-varid'>runPretext</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>f</span><span class='hs-varop'>.</span> <span class='hs-conid'>Functor</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span> <span class='hs-layout'>}</span>
<a name="line-217"></a><span class='hs-comment'>-- type role Pretext representational nominal nominal nominal</span>
<a name="line-218"></a>
<a name="line-219"></a><a name="Pretext'"></a><span class='hs-comment'>-- | @type 'Pretext'' p a s = 'Pretext' p a a s@</span>
<a name="line-220"></a><a name="Pretext'"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Pretext'</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span>
<a name="line-221"></a>
<a name="line-222"></a><a name="instance%20IndexedFunctor%20(Pretext%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IndexedFunctor</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-223"></a> <span class='hs-varid'>ifmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pretext</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-224"></a> <span class='hs-comment'>{-# INLINE ifmap #-}</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="instance%20Functor%20(Pretext%20p%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-227"></a> <span class='hs-varid'>fmap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ifmap</span>
<a name="line-228"></a> <span class='hs-comment'>{-# INLINE fmap #-}</span>
<a name="line-229"></a>
<a name="line-230"></a><a name="instance%20IndexedComonad%20(Pretext%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-231"></a> <span class='hs-varid'>iextract</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-conid'>Identity</span><span class='hs-layout'>)</span>
<a name="line-232"></a> <span class='hs-comment'>{-# INLINE iextract #-}</span>
<a name="line-233"></a> <span class='hs-varid'>iduplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getCompose</span> <span class='hs-varop'>$</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Compose</span> <span class='hs-cpp'>#.</span> <span class='hs-varid'>distrib</span> <span class='hs-varid'>sell</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sell</span><span class='hs-layout'>)</span>
<a name="line-234"></a> <span class='hs-comment'>{-# INLINE iduplicate #-}</span>
<a name="line-235"></a>
<a name="line-236"></a><a name="instance%20Comonad%20(Pretext%20p%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Comonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-237"></a> <span class='hs-varid'>extract</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iextract</span>
<a name="line-238"></a> <span class='hs-comment'>{-# INLINE extract #-}</span>
<a name="line-239"></a> <span class='hs-varid'>duplicate</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iduplicate</span>
<a name="line-240"></a> <span class='hs-comment'>{-# INLINE duplicate #-}</span>
<a name="line-241"></a>
<a name="line-242"></a><a name="instance%20IndexedComonadStore%20(Pretext%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonadStore</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-243"></a> <span class='hs-varid'>ipos</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getConst</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-conid'>Const</span>
<a name="line-244"></a> <span class='hs-comment'>{-# INLINE ipos #-}</span>
<a name="line-245"></a> <span class='hs-varid'>ipeek</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-246"></a> <span class='hs-comment'>{-# INLINE ipeek #-}</span>
<a name="line-247"></a> <span class='hs-varid'>ipeeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-248"></a> <span class='hs-comment'>{-# INLINE ipeeks #-}</span>
<a name="line-249"></a> <span class='hs-varid'>iseek</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pretext</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-250"></a> <span class='hs-comment'>{-# INLINE iseek #-}</span>
<a name="line-251"></a> <span class='hs-varid'>iseeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pretext</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-252"></a> <span class='hs-comment'>{-# INLINE iseeks #-}</span>
<a name="line-253"></a> <span class='hs-varid'>iexperiment</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-254"></a> <span class='hs-comment'>{-# INLINE iexperiment #-}</span>
<a name="line-255"></a> <span class='hs-varid'>context</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-varid'>sell</span><span class='hs-layout'>)</span>
<a name="line-256"></a> <span class='hs-comment'>{-# INLINE context #-}</span>
<a name="line-257"></a>
<a name="line-258"></a><a name="instance%20ComonadStore%20a%20(Pretext%20p%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ComonadStore</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-259"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipos</span>
<a name="line-260"></a> <span class='hs-comment'>{-# INLINE pos #-}</span>
<a name="line-261"></a> <span class='hs-varid'>peek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeek</span>
<a name="line-262"></a> <span class='hs-comment'>{-# INLINE peek #-}</span>
<a name="line-263"></a> <span class='hs-varid'>peeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeeks</span>
<a name="line-264"></a> <span class='hs-comment'>{-# INLINE peeks #-}</span>
<a name="line-265"></a> <span class='hs-varid'>seek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseek</span>
<a name="line-266"></a> <span class='hs-comment'>{-# INLINE seek #-}</span>
<a name="line-267"></a> <span class='hs-varid'>seeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseeks</span>
<a name="line-268"></a> <span class='hs-comment'>{-# INLINE seeks #-}</span>
<a name="line-269"></a> <span class='hs-varid'>experiment</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iexperiment</span>
<a name="line-270"></a> <span class='hs-comment'>{-# INLINE experiment #-}</span>
<a name="line-271"></a>
<a name="line-272"></a><a name="instance%20Sellable%20p%20(Pretext%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Corepresentable</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Sellable</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Pretext</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-273"></a> <span class='hs-varid'>sell</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cotabulate</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pretext</span> <span class='hs-layout'>(</span><span class='hs-varop'>`cosieve`</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-274"></a> <span class='hs-comment'>{-# INLINE sell #-}</span>
<a name="line-275"></a>
<a name="line-276"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-277"></a><span class='hs-comment'>-- PretextT</span>
<a name="line-278"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-279"></a>
<a name="line-280"></a>
<a name="line-281"></a>
<a name="line-282"></a><a name="PretextT"></a><span class='hs-comment'>-- | This is a generalized form of 'Context' that can be repeatedly cloned with less</span>
<a name="line-283"></a><a name="PretextT"></a><span class='hs-comment'>-- impact on its performance, and which permits the use of an arbitrary 'Conjoined'</span>
<a name="line-284"></a><a name="PretextT"></a><span class='hs-comment'>-- 'Profunctor'.</span>
<a name="line-285"></a><a name="PretextT"></a><span class='hs-comment'>--</span>
<a name="line-286"></a><a name="PretextT"></a><span class='hs-comment'>-- The extra phantom 'Functor' is used to let us lie and claim</span>
<a name="line-287"></a><a name="PretextT"></a><span class='hs-comment'>-- 'Control.Lens.Getter.Getter'-compatibility under limited circumstances.</span>
<a name="line-288"></a><a name="PretextT"></a><span class='hs-comment'>-- This is used internally to permit a number of combinators to gracefully</span>
<a name="line-289"></a><a name="PretextT"></a><span class='hs-comment'>-- degrade when applied to a 'Control.Lens.Fold.Fold' or</span>
<a name="line-290"></a><a name="PretextT"></a><span class='hs-comment'>-- 'Control.Lens.Getter.Getter'.</span>
<a name="line-291"></a><a name="PretextT"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>g</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>*</span> <span class='hs-keyglyph'>-></span> <span class='hs-varop'>*</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PretextT</span> <span class='hs-layout'>{</span> <span class='hs-varid'>runPretextT</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>f</span><span class='hs-varop'>.</span> <span class='hs-conid'>Functor</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span> <span class='hs-layout'>}</span>
<a name="line-292"></a>
<a name="line-293"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 707</span>
<a name="line-294"></a><span class='hs-comment'>-- really we want PretextT p g a b t to permit the last 3 arguments to be representational iff p and f accept representational arguments</span>
<a name="line-295"></a><span class='hs-comment'>-- but that isn't currently an option in GHC</span>
<a name="line-296"></a><span class='hs-keyword'>type</span> <span class='hs-varid'>role</span> <span class='hs-conid'>PretextT</span> <span class='hs-varid'>representational</span> <span class='hs-varid'>nominal</span> <span class='hs-varid'>nominal</span> <span class='hs-varid'>nominal</span> <span class='hs-varid'>nominal</span>
<a name="line-297"></a><span class='hs-cpp'>#endif</span>
<a name="line-298"></a>
<a name="line-299"></a><a name="PretextT'"></a><span class='hs-comment'>-- | @type 'PretextT'' p g a s = 'PretextT' p g a a s@</span>
<a name="line-300"></a><a name="PretextT'"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>PretextT'</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span>
<a name="line-301"></a>
<a name="line-302"></a><a name="instance%20IndexedFunctor%20(PretextT%20p%20g)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IndexedFunctor</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-303"></a> <span class='hs-varid'>ifmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PretextT</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span>
<a name="line-304"></a> <span class='hs-comment'>{-# INLINE ifmap #-}</span>
<a name="line-305"></a>
<a name="line-306"></a><a name="instance%20Functor%20(PretextT%20p%20g%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-307"></a> <span class='hs-varid'>fmap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ifmap</span>
<a name="line-308"></a> <span class='hs-comment'>{-# INLINE fmap #-}</span>
<a name="line-309"></a>
<a name="line-310"></a><a name="instance%20IndexedComonad%20(PretextT%20p%20g)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-311"></a> <span class='hs-varid'>iextract</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-conid'>Identity</span><span class='hs-layout'>)</span>
<a name="line-312"></a> <span class='hs-comment'>{-# INLINE iextract #-}</span>
<a name="line-313"></a> <span class='hs-varid'>iduplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getCompose</span> <span class='hs-varop'>$</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Compose</span> <span class='hs-cpp'>#.</span> <span class='hs-varid'>distrib</span> <span class='hs-varid'>sell</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sell</span><span class='hs-layout'>)</span>
<a name="line-314"></a> <span class='hs-comment'>{-# INLINE iduplicate #-}</span>
<a name="line-315"></a>
<a name="line-316"></a><a name="instance%20Comonad%20(PretextT%20p%20g%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Comonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-317"></a> <span class='hs-varid'>extract</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iextract</span>
<a name="line-318"></a> <span class='hs-comment'>{-# INLINE extract #-}</span>
<a name="line-319"></a> <span class='hs-varid'>duplicate</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iduplicate</span>
<a name="line-320"></a> <span class='hs-comment'>{-# INLINE duplicate #-}</span>
<a name="line-321"></a>
<a name="line-322"></a><a name="instance%20IndexedComonadStore%20(PretextT%20p%20g)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IndexedComonadStore</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-323"></a> <span class='hs-varid'>ipos</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getConst</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-conid'>Const</span>
<a name="line-324"></a> <span class='hs-comment'>{-# INLINE ipos #-}</span>
<a name="line-325"></a> <span class='hs-varid'>ipeek</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-326"></a> <span class='hs-comment'>{-# INLINE ipeek #-}</span>
<a name="line-327"></a> <span class='hs-varid'>ipeeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runIdentity</span> <span class='hs-varop'>$</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-varop'>$</span> <span class='hs-varid'>arr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-328"></a> <span class='hs-comment'>{-# INLINE ipeeks #-}</span>
<a name="line-329"></a> <span class='hs-varid'>iseek</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PretextT</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-330"></a> <span class='hs-comment'>{-# INLINE iseek #-}</span>
<a name="line-331"></a> <span class='hs-varid'>iseeks</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PretextT</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>lmap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-332"></a> <span class='hs-comment'>{-# INLINE iseeks #-}</span>
<a name="line-333"></a> <span class='hs-varid'>iexperiment</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-334"></a> <span class='hs-comment'>{-# INLINE iexperiment #-}</span>
<a name="line-335"></a> <span class='hs-varid'>context</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coarr</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-varid'>sell</span><span class='hs-layout'>)</span>
<a name="line-336"></a> <span class='hs-comment'>{-# INLINE context #-}</span>
<a name="line-337"></a>
<a name="line-338"></a><a name="instance%20ComonadStore%20a%20(PretextT%20p%20g%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>~</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conjoined</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ComonadStore</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-339"></a> <span class='hs-varid'>pos</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipos</span>
<a name="line-340"></a> <span class='hs-comment'>{-# INLINE pos #-}</span>
<a name="line-341"></a> <span class='hs-varid'>peek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeek</span>
<a name="line-342"></a> <span class='hs-comment'>{-# INLINE peek #-}</span>
<a name="line-343"></a> <span class='hs-varid'>peeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ipeeks</span>
<a name="line-344"></a> <span class='hs-comment'>{-# INLINE peeks #-}</span>
<a name="line-345"></a> <span class='hs-varid'>seek</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseek</span>
<a name="line-346"></a> <span class='hs-comment'>{-# INLINE seek #-}</span>
<a name="line-347"></a> <span class='hs-varid'>seeks</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iseeks</span>
<a name="line-348"></a> <span class='hs-comment'>{-# INLINE seeks #-}</span>
<a name="line-349"></a> <span class='hs-varid'>experiment</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iexperiment</span>
<a name="line-350"></a> <span class='hs-comment'>{-# INLINE experiment #-}</span>
<a name="line-351"></a>
<a name="line-352"></a><a name="instance%20Sellable%20p%20(PretextT%20p%20g)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Corepresentable</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Sellable</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-353"></a> <span class='hs-varid'>sell</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cotabulate</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PretextT</span> <span class='hs-layout'>(</span><span class='hs-varop'>`cosieve`</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-354"></a> <span class='hs-comment'>{-# INLINE sell #-}</span>
<a name="line-355"></a>
<a name="line-356"></a><a name="instance%20Contravariant%20(PretextT%20p%20g%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Profunctor</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Contravariant</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Contravariant</span> <span class='hs-layout'>(</span><span class='hs-conid'>PretextT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>g</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-357"></a> <span class='hs-varid'>contramap</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'><$</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"contramap: PretextT"</span><span class='hs-layout'>)</span>
<a name="line-358"></a> <span class='hs-comment'>{-# INLINE contramap #-}</span>
<a name="line-359"></a>
<a name="line-360"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-361"></a><span class='hs-comment'>-- Utilities</span>
<a name="line-362"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-363"></a>
<a name="line-364"></a><a name="coarr"></a><span class='hs-comment'>-- | We can convert any 'Conjoined' 'Profunctor' to a function,</span>
<a name="line-365"></a><span class='hs-comment'>-- possibly losing information about an index in the process.</span>
<a name="line-366"></a><span class='hs-definition'>coarr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Representable</span> <span class='hs-varid'>q</span><span class='hs-layout'>,</span> <span class='hs-conid'>Comonad</span> <span class='hs-layout'>(</span><span class='hs-conid'>Rep</span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>q</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span>
<a name="line-367"></a><span class='hs-definition'>coarr</span> <span class='hs-varid'>qab</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>extract</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sieve</span> <span class='hs-varid'>qab</span>
<a name="line-368"></a><span class='hs-comment'>{-# INLINE coarr #-}</span>
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