/usr/share/doc/libghc-cereal-conduit-doc/html/src/Data-Conduit-Cereal-Internal.html is in libghc-cereal-conduit-doc 0.7.3-3build7.
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 | <?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>Data/Conduit/Cereal/Internal.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE RankNTypes #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span><span class='hs-varop'>.</span><span class='hs-conid'>Cereal</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-5"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>ConduitErrorHandler</span>
<a name="line-6"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SinkErrorHandler</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SinkTerminationHandler</span>
<a name="line-8"></a>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkConduitGet</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkSinkGet</span>
<a name="line-11"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>forever</span><span class='hs-layout'>,</span> <span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</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'>BS</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>C</span>
<a name="line-16"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Serialize</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>get</span><span class='hs-layout'>,</span> <span class='hs-varid'>put</span><span class='hs-layout'>)</span>
<a name="line-17"></a>
<a name="line-18"></a><a name="ConduitErrorHandler"></a><span class='hs-comment'>-- | What should we do if the Get fails?</span>
<a name="line-19"></a><a name="ConduitErrorHandler"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ConduitErrorHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-varid'>o</span>
<a name="line-20"></a><a name="SinkErrorHandler"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>SinkErrorHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Consumer</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span>
<a name="line-21"></a>
<a name="line-22"></a><a name="SinkTerminationHandler"></a><span class='hs-comment'>-- | What should we do if the stream is done before the Get is done?</span>
<a name="line-23"></a><a name="SinkTerminationHandler"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>SinkTerminationHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Result</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Consumer</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span>
<a name="line-24"></a>
<a name="line-25"></a><a name="mkConduitGet"></a><span class='hs-comment'>-- | Construct a conduitGet with the specified 'ErrorHandler'</span>
<a name="line-26"></a><span class='hs-definition'>mkConduitGet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span>
<a name="line-27"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ConduitErrorHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>o</span>
<a name="line-28"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Get</span> <span class='hs-varid'>o</span>
<a name="line-29"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-varid'>o</span>
<a name="line-30"></a><span class='hs-definition'>mkConduitGet</span> <span class='hs-varid'>errorHandler</span> <span class='hs-varid'>get</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>consume</span> <span class='hs-conid'>True</span> <span class='hs-layout'>(</span><span class='hs-varid'>runGetPartial</span> <span class='hs-varid'>get</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-31"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>pull</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span>
<a name="line-32"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>await</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>null</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>leftover</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>pull</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-33"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>consume</span> <span class='hs-conid'>False</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span>
<a name="line-34"></a> <span class='hs-varid'>consume</span> <span class='hs-varid'>initial</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-35"></a> <span class='hs-conid'>Fail</span> <span class='hs-varid'>msg</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-36"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>null</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>leftover</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>consumed</span><span class='hs-layout'>)</span>
<a name="line-37"></a> <span class='hs-varid'>errorHandler</span> <span class='hs-varid'>msg</span>
<a name="line-38"></a> <span class='hs-conid'>Partial</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pull</span> <span class='hs-varid'>p</span> <span class='hs-varid'>consumed</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-39"></a> <span class='hs-conid'>Done</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>initial</span> <span class='hs-keyword'>of</span>
<a name="line-40"></a> <span class='hs-comment'>-- this only works because the Get will either _always_ consume no input, or _never_ consume no input.</span>
<a name="line-41"></a> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>forever</span> <span class='hs-varop'>$</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>yield</span> <span class='hs-varid'>a</span>
<a name="line-42"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>yield</span> <span class='hs-varid'>a</span> <span class='hs-varop'>>></span> <span class='hs-varid'>pull</span> <span class='hs-layout'>(</span><span class='hs-varid'>runGetPartial</span> <span class='hs-varid'>get</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>s'</span>
<a name="line-43"></a><span class='hs-comment'>-- False -> C.yield a >> C.leftover s' >> mkConduitGet errorHandler get</span>
<a name="line-44"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>consumed</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>b</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="mkSinkGet"></a><span class='hs-comment'>-- | Construct a sinkGet with the specified 'ErrorHandler' and 'TerminationHandler'</span>
<a name="line-47"></a><span class='hs-definition'>mkSinkGet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span>
<a name="line-48"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>SinkErrorHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span>
<a name="line-49"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SinkTerminationHandler</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span>
<a name="line-50"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Get</span> <span class='hs-varid'>r</span>
<a name="line-51"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Consumer</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-varid'>m</span> <span class='hs-varid'>r</span>
<a name="line-52"></a><span class='hs-definition'>mkSinkGet</span> <span class='hs-varid'>errorHandler</span> <span class='hs-varid'>terminationHandler</span> <span class='hs-varid'>get</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>consume</span> <span class='hs-layout'>(</span><span class='hs-varid'>runGetPartial</span> <span class='hs-varid'>get</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-53"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>pull</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span>
<a name="line-54"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>await</span> <span class='hs-varop'>>>=</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-55"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>null</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>leftover</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>terminationHandler</span> <span class='hs-varid'>f</span>
<a name="line-56"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pull</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>a</span>
<a name="line-57"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>consume</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span>
<a name="line-58"></a> <span class='hs-varid'>consume</span> <span class='hs-varid'>f</span> <span class='hs-varid'>b</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-59"></a> <span class='hs-conid'>Fail</span> <span class='hs-varid'>msg</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-60"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>null</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>leftover</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>consumed</span><span class='hs-layout'>)</span>
<a name="line-61"></a> <span class='hs-varid'>errorHandler</span> <span class='hs-varid'>msg</span>
<a name="line-62"></a> <span class='hs-conid'>Partial</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pull</span> <span class='hs-varid'>p</span> <span class='hs-varid'>consumed</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-63"></a> <span class='hs-conid'>Done</span> <span class='hs-varid'>r</span> <span class='hs-varid'>s'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-varid'>leftover</span> <span class='hs-varid'>s'</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-varid'>r</span>
<a name="line-64"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>consumed</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-conop'>:</span> <span class='hs-varid'>b</span>
</pre></body>
</html>
|