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<title>src/Data/Dynamic/Lens.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 FlexibleContexts #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE MultiParamTypeClasses #-}</span>
<a name="line-4"></a>
<a name="line-5"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-6"></a><span class='hs-comment'>{-# LANGUAGE PatternSynonyms #-}</span>
<a name="line-7"></a><span class='hs-comment'>{-# LANGUAGE ViewPatterns #-}</span>
<a name="line-8"></a><span class='hs-cpp'>#endif</span>
<a name="line-9"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-10"></a><span class='hs-comment'>-- |</span>
<a name="line-11"></a><span class='hs-comment'>-- Module : Data.Dynamic.Lens</span>
<a name="line-12"></a><span class='hs-comment'>-- Copyright : (C) 2012-2015 Edward Kmett</span>
<a name="line-13"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-14"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-15"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-16"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Dynamic</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-20"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>AsDynamic</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>pattern</span> <span class='hs-conid'>Dynamic</span>
<a name="line-23"></a><span class='hs-cpp'>#endif</span>
<a name="line-24"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Dynamic</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="Prism'"></a><span class='hs-comment'>-- | Any 'Dynamic' can be thrown as an 'Exception'</span>
<a name="line-32"></a><a name="Prism'"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>AsDynamic</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>where</span>
<a name="line-33"></a> <span class='hs-comment'>-- | This 'Prism' allows you to traverse the typed value contained in a</span>
<a name="line-34"></a> <span class='hs-comment'>-- 'Dynamic' where the type required by your function matches that</span>
<a name="line-35"></a> <span class='hs-comment'>-- of the contents of the 'Dynamic', or construct a 'Dynamic' value</span>
<a name="line-36"></a> <span class='hs-comment'>-- out of whole cloth. It can also be used to catch or throw a 'Dynamic'</span>
<a name="line-37"></a> <span class='hs-comment'>-- value as 'SomeException'.</span>
<a name="line-38"></a> <span class='hs-comment'>--</span>
<a name="line-39"></a> <span class='hs-comment'>-- @</span>
<a name="line-40"></a> <span class='hs-comment'>-- '_Dynamic' :: 'Typeable' a => 'Prism'' 'Dynamic' a</span>
<a name="line-41"></a> <span class='hs-comment'>-- '_Dynamic' :: 'Typeable' a => 'Prism'' 'SomeException' a</span>
<a name="line-42"></a> <span class='hs-comment'>-- @</span>
<a name="line-43"></a> <span class='hs-sel'>_Dynamic</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Typeable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Prism'</span> <span class='hs-varid'>t</span> <span class='hs-varid'>a</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="instance%20AsDynamic%20Dynamic"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsDynamic</span> <span class='hs-conid'>Dynamic</span> <span class='hs-keyword'>where</span>
<a name="line-46"></a> <span class='hs-sel'>_Dynamic</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prism'</span> <span class='hs-varid'>toDyn</span> <span class='hs-varid'>fromDynamic</span>
<a name="line-47"></a> <span class='hs-comment'>{-# INLINE _Dynamic #-}</span>
<a name="line-48"></a>
<a name="line-49"></a><a name="instance%20AsDynamic%20SomeException"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsDynamic</span> <span class='hs-conid'>SomeException</span> <span class='hs-keyword'>where</span>
<a name="line-50"></a> <span class='hs-sel'>_Dynamic</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>exception</span><span class='hs-varop'>.</span><span class='hs-varid'>prism'</span> <span class='hs-varid'>toDyn</span> <span class='hs-varid'>fromDynamic</span>
<a name="line-51"></a> <span class='hs-comment'>{-# INLINE _Dynamic #-}</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-54"></a><a name="pattern"></a><span class='hs-definition'>pattern</span> <span class='hs-conid'>Dynamic</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>preview</span> <span class='hs-sel'>_Dynamic</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-55"></a> <span class='hs-conid'>Dynamic</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>review</span> <span class='hs-sel'>_Dynamic</span> <span class='hs-varid'>a</span>
<a name="line-56"></a><span class='hs-cpp'>#endif</span>
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