/usr/share/doc/libghc-lens-doc/html/src/Control-Lens-Internal-Iso.html is in libghc-lens-doc 4.15.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>src/Control/Lens/Internal/Iso.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-cpp'>#ifdef TRUSTWORTHY</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE Trustworthy #-}</span>
<a name="line-4"></a><span class='hs-cpp'>#endif</span>
<a name="line-5"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-6"></a><span class='hs-comment'>-- |</span>
<a name="line-7"></a><span class='hs-comment'>-- Module : Control.Lens.Internal.Iso</span>
<a name="line-8"></a><span class='hs-comment'>-- Copyright : (C) 2012-2016 Edward Kmett</span>
<a name="line-9"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-10"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-11"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-12"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-15"></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'>Iso</span>
<a name="line-16"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Exchange</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Reversing</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-18"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-19"></a>
<a name="line-20"></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-21"></a><span class='hs-cpp'>#ifndef SAFE</span>
<a name="line-22"></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-23"></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'>Coerce</span>
<a name="line-24"></a><span class='hs-cpp'>#endif</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>StrictB</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>LazyB</span>
<a name="line-27"></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'>NonEmpty</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>NonEmpty</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>StrictT</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>LazyT</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Vector</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Primitive</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Prim</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Storable</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Unboxed</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Unbox</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Seq</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-37"></a><span class='hs-comment'>-- Isomorphism: Exchange</span>
<a name="line-38"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="Exchange"></a><span class='hs-comment'>-- | This is used internally by the 'Control.Lens.Iso.Iso' code to provide</span>
<a name="line-41"></a><a name="Exchange"></a><span class='hs-comment'>-- efficient access to the two functions that make up an isomorphism.</span>
<a name="line-42"></a><a name="Exchange"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Exchange</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Exchange</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</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>
<a name="line-43"></a>
<a name="line-44"></a><a name="instance%20Functor%20(Exchange%20a%20b%20s)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-45"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span>
<a name="line-46"></a> <span class='hs-comment'>{-# INLINE fmap #-}</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="instance%20Profunctor%20(Exchange%20a%20b)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Profunctor</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</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-49"></a> <span class='hs-varid'>dimap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Exchange</span> <span class='hs-layout'>(</span><span class='hs-varid'>sa</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>g</span> <span class='hs-varop'>.</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span>
<a name="line-50"></a> <span class='hs-comment'>{-# INLINE dimap #-}</span>
<a name="line-51"></a> <span class='hs-varid'>lmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Exchange</span> <span class='hs-layout'>(</span><span class='hs-varid'>sa</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>bt</span>
<a name="line-52"></a> <span class='hs-comment'>{-# INLINE lmap #-}</span>
<a name="line-53"></a> <span class='hs-varid'>rmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Exchange</span> <span class='hs-varid'>sa</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>bt</span><span class='hs-layout'>)</span>
<a name="line-54"></a> <span class='hs-comment'>{-# INLINE rmap #-}</span>
<a name="line-55"></a><span class='hs-cpp'>#ifndef SAFE</span>
<a name="line-56"></a> <span class='hs-layout'>(</span> <span class='hs-cpp'>#.</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce'</span>
<a name="line-57"></a> <span class='hs-comment'>{-# INLINE ( #. ) #-}</span>
<a name="line-58"></a> <span class='hs-layout'>(</span> <span class='hs-varop'>.#</span> <span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>coerce</span> <span class='hs-varid'>p</span>
<a name="line-59"></a> <span class='hs-comment'>{-# INLINE ( .# ) #-}</span>
<a name="line-60"></a><span class='hs-cpp'>#endif</span>
<a name="line-61"></a>
<a name="line-62"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-63"></a><span class='hs-comment'>-- Reversible</span>
<a name="line-64"></a><span class='hs-comment'>------------------------------------------------------------------------------</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="Reversing"></a><span class='hs-comment'>-- | This class provides a generalized notion of list reversal extended to other containers.</span>
<a name="line-67"></a><a name="Reversing"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Reversing</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>where</span>
<a name="line-68"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="instance%20Reversing%20%5ba%5d"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>where</span>
<a name="line-71"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prelude</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="instance%20Reversing%20(NonEmpty.NonEmpty%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span><span class='hs-varop'>.</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-74"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NonEmpty</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-75"></a>
<a name="line-76"></a><a name="instance%20Reversing%20StrictB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-77"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="instance%20Reversing%20LazyB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-80"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="instance%20Reversing%20StrictT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-83"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="instance%20Reversing%20LazyT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-86"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="instance%20Reversing%20(Vector.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-89"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="instance%20Reversing%20(Seq%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-92"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="instance%20Reversing%20(Prim.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Prim</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-95"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-96"></a>
<a name="line-97"></a><a name="instance%20Reversing%20(Unbox.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Unbox</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Unbox</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-98"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Unbox</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="instance%20Reversing%20(Storable.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Reversing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-101"></a> <span class='hs-varid'>reversing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-varid'>reverse</span>
</pre></body>
</html>
|