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<title>Control/Exception/IOChoice/TH.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell, ScopedTypeVariables #-}</span>
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<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- This package provides a function to generate a choice operator</span>
<a name="line-5"></a><span class='hs-comment'>-- in IO monad by specifying exceptions to be caught.</span>
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<a name="line-7"></a><span class='hs-keyword'>module</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'>IOChoice</span><span class='hs-varop'>.</span><span class='hs-conid'>TH</span> <span class='hs-layout'>(</span><span class='hs-varid'>newIOChoice</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
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<a name="line-9"></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-10"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Haskell</span><span class='hs-varop'>.</span><span class='hs-conid'>TH</span>
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<a name="line-12"></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'>IOChoice</span><span class='hs-varop'>.</span><span class='hs-conid'>THUtil</span>
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<a name="line-14"></a><span class='hs-comment'>-- |</span>
<a name="line-15"></a><span class='hs-comment'>-- A function to generate a choice operator in IO monad.</span>
<a name="line-16"></a><span class='hs-comment'>-- 'IOException' is automatically added to specified exceptions.</span>
<a name="line-17"></a><span class='hs-comment'>-- So, 'Control.Exception.IOChoice.goNext' can be used with</span>
<a name="line-18"></a><span class='hs-comment'>-- the new operator.</span>
<a name="line-19"></a><span class='hs-comment'>--</span>
<a name="line-20"></a><span class='hs-comment'>-- > {-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-21"></a><span class='hs-comment'>-- > import Control.Exception</span>
<a name="line-22"></a><span class='hs-comment'>-- > import Control.Exception.IOChoice.TH</span>
<a name="line-23"></a><span class='hs-comment'>-- ></span>
<a name="line-24"></a><span class='hs-comment'>-- > (||>>) :: IO a -> IO a -> IO a</span>
<a name="line-25"></a><span class='hs-comment'>-- > (||>>) = $(newIOChoice [''ErrorCall, ''ArithException])</span>
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<a name="line-27"></a><a name="newIOChoice"></a><span class='hs-definition'>newIOChoice</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Name</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ExpQ</span>
<a name="line-28"></a><span class='hs-definition'>newIOChoice</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newChoice</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>|</span> <span class='hs-varid'>catches</span> <span class='hs-keyglyph'>|</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>|</span> <span class='hs-conid'>Handler</span> <span class='hs-keyglyph'>|</span><span class='hs-keyglyph'>]</span>
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