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<title>src/Darcs/Witnesses/Unsafe.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE MagicHash #-}</span>
<a name="line-2"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-3"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span> <span class='hs-layout'>(</span>
<a name="line-4"></a> <span class='hs-varid'>unsafeCoerceP</span><span class='hs-layout'>,</span> <span class='hs-varid'>unsafeCoercePStart</span><span class='hs-layout'>,</span>
<a name="line-5"></a> <span class='hs-varid'>unsafeCoercePEnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>unsafeCoerceP2</span><span class='hs-layout'>,</span>
<a name="line-6"></a> <span class='hs-varid'>unsafeCoerceP1</span>
<a name="line-7"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-8"></a>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Base</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span><span class='hs-layout'>)</span>
<a name="line-10"></a>
<a name="line-11"></a><a name="unsafeCoerceP"></a><span class='hs-definition'>unsafeCoerceP</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-12"></a><span class='hs-definition'>unsafeCoerceP</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span>
<a name="line-13"></a>
<a name="line-14"></a><a name="unsafeCoercePStart"></a><span class='hs-definition'>unsafeCoercePStart</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x1</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x2</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-definition'>unsafeCoercePStart</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span>
<a name="line-16"></a>
<a name="line-17"></a><a name="unsafeCoercePEnd"></a><span class='hs-definition'>unsafeCoercePEnd</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y2</span><span class='hs-layout'>)</span>
<a name="line-18"></a><span class='hs-definition'>unsafeCoercePEnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span>
<a name="line-19"></a>
<a name="line-20"></a><a name="unsafeCoerceP2"></a><span class='hs-definition'>unsafeCoerceP2</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>t</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-definition'>unsafeCoerceP2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span>
<a name="line-22"></a>
<a name="line-23"></a><a name="unsafeCoerceP1"></a><span class='hs-definition'>unsafeCoerceP1</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-definition'>unsafeCoerceP1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafeCoerce</span><span class='hs-cpp'>#</span>
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