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<title>src/Darcs/Patch/Prim/V1/Apply.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>V1</span><span class='hs-varop'>.</span><span class='hs-conid'>Apply</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>where</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Apply</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Apply</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-5"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Repair</span> <span class='hs-layout'>(</span> <span class='hs-conid'>RepairToFL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-6"></a>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PrimApply</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>V1</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span>
<a name="line-9"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>Prim</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-10"></a> <span class='hs-conid'>DirPatchType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>FilePatchType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-11"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>V1</span><span class='hs-varop'>.</span><span class='hs-conid'>Show</span> <span class='hs-layout'>(</span> <span class='hs-varid'>showHunk</span> <span class='hs-layout'>)</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>FileName</span> <span class='hs-layout'>(</span> <span class='hs-varid'>fn2fp</span> <span class='hs-layout'>)</span>
<a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Format</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FileNameFormat</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>TokenReplace</span> <span class='hs-layout'>(</span> <span class='hs-varid'>tryTokInternal</span> <span class='hs-layout'>)</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>ApplyMonad</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ApplyMonad</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>Tree</span><span class='hs-layout'>(</span> <span class='hs-conid'>Tree</span> <span class='hs-layout'>)</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-keyword'>import</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'>Ordered</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapFL_FL</span><span class='hs-layout'>,</span> <span class='hs-varid'>spanFL</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conop'>:></span><span class='hs-layout'>)</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-keyword'>import</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> <span class='hs-varid'>unsafeCoercePStart</span> <span class='hs-layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>unlinesPS</span><span class='hs-layout'>,</span> <span class='hs-varid'>breakAfterNthNewline</span><span class='hs-layout'>,</span> <span class='hs-varid'>breakBeforeNthNewline</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span><span class='hs-layout'>(</span> <span class='hs-varid'>renderString</span> <span class='hs-layout'>)</span>
<a name="line-25"></a>
<a name="line-26"></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'>B</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>empty</span><span class='hs-layout'>,</span> <span class='hs-varid'>null</span><span class='hs-layout'>,</span> <span class='hs-varid'>concat</span> <span class='hs-layout'>)</span>
<a name="line-27"></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-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BC</span> <span class='hs-layout'>(</span><span class='hs-varid'>pack</span><span class='hs-layout'>,</span> <span class='hs-varid'>singleton</span><span class='hs-layout'>,</span> <span class='hs-varid'>unpack</span><span class='hs-layout'>)</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'>List</span> <span class='hs-layout'>(</span> <span class='hs-varid'>intersperse</span> <span class='hs-layout'>)</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-31"></a><span class='hs-cpp'>#include "impossible.h"</span>
<a name="line-32"></a>
<a name="line-33"></a><a name="FileContents"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>FileContents</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-34"></a>
<a name="line-35"></a><a name="instance%20Apply%20Prim"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Apply</span> <span class='hs-conid'>Prim</span> <span class='hs-keyword'>where</span>
<a name="line-36"></a> <span class='hs-keyword'>type</span> <span class='hs-conid'>ApplyState</span> <span class='hs-conid'>Prim</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Tree</span>
<a name="line-37"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>RmFile</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span>
<a name="line-38"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>AddFile</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span>
<a name="line-39"></a> <span class='hs-varid'>apply</span> <span class='hs-varid'>p</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Hunk</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applyPrimFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-40"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>TokReplace</span> <span class='hs-varid'>t</span> <span class='hs-varid'>o</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mModifyFilePSs</span> <span class='hs-varid'>f</span> <span class='hs-varid'>doreplace</span>
<a name="line-41"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>doreplace</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span>
<a name="line-42"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>tryTokInternal</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ls</span> <span class='hs-keyword'>of</span>
<a name="line-43"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"replace patch to "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span>
<a name="line-44"></a> <span class='hs-varop'>++</span> <span class='hs-str'>" couldn't apply."</span>
<a name="line-45"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>ls'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varid'>ls'</span>
<a name="line-46"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Binary</span> <span class='hs-varid'>o</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mModifyFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varid'>doapply</span>
<a name="line-47"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>doapply</span> <span class='hs-varid'>oldf</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>o</span> <span class='hs-varop'>==</span> <span class='hs-varid'>oldf</span>
<a name="line-48"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varid'>n</span>
<a name="line-49"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"binary patch to "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span>
<a name="line-50"></a> <span class='hs-varop'>++</span> <span class='hs-str'>" couldn't apply."</span>
<a name="line-51"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>DP</span> <span class='hs-varid'>d</span> <span class='hs-conid'>AddDir</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>d</span>
<a name="line-52"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>DP</span> <span class='hs-varid'>d</span> <span class='hs-conid'>RmDir</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mRemoveDirectory</span> <span class='hs-varid'>d</span>
<a name="line-53"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>Move</span> <span class='hs-varid'>f</span> <span class='hs-varid'>f'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mRename</span> <span class='hs-varid'>f</span> <span class='hs-varid'>f'</span>
<a name="line-54"></a> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>ChangePref</span> <span class='hs-varid'>p</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mChangePref</span> <span class='hs-varid'>p</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span>
<a name="line-55"></a>
<a name="line-56"></a><a name="instance%20RepairToFL%20Prim"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>RepairToFL</span> <span class='hs-conid'>Prim</span> <span class='hs-keyword'>where</span>
<a name="line-57"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>RmFile</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-58"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mReadFilePS</span> <span class='hs-varid'>f</span>
<a name="line-59"></a> <span class='hs-varid'>mRemoveFile</span> <span class='hs-varid'>f</span>
<a name="line-60"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-61"></a> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-62"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-str'>"WARNING: Fixing removal of non-empty file "</span><span class='hs-varop'>++</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span>
<a name="line-63"></a> <span class='hs-comment'>-- No need to coerce because the content</span>
<a name="line-64"></a> <span class='hs-comment'>-- removal patch has freely decided contexts</span>
<a name="line-65"></a> <span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Binary</span> <span class='hs-varid'>x</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-layout'>)</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>RmFile</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span> <span class='hs-layout'>)</span>
<a name="line-66"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>AddFile</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-67"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mDoesFileExist</span> <span class='hs-varid'>f</span>
<a name="line-68"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>exists</span>
<a name="line-69"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-70"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-str'>"WARNING: Dropping add of existing file "</span><span class='hs-varop'>++</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-comment'>-- the old context was wrong, so we have to coerce</span>
<a name="line-72"></a> <span class='hs-varid'>unsafeCoercePStart</span> <span class='hs-conid'>NilFL</span>
<a name="line-73"></a> <span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>mCreateFile</span> <span class='hs-varid'>f</span>
<a name="line-75"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-76"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>DP</span> <span class='hs-varid'>f</span> <span class='hs-conid'>AddDir</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-77"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>exists</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mDoesDirectoryExist</span> <span class='hs-varid'>f</span>
<a name="line-78"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>exists</span>
<a name="line-79"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-80"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-str'>"WARNING: Dropping add of existing directory "</span><span class='hs-varop'>++</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span>
<a name="line-81"></a> <span class='hs-comment'>-- the old context was wrong, so we have to coerce</span>
<a name="line-82"></a> <span class='hs-varid'>unsafeCoercePStart</span> <span class='hs-conid'>NilFL</span>
<a name="line-83"></a> <span class='hs-layout'>)</span>
<a name="line-84"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>mCreateDirectory</span> <span class='hs-varid'>f</span>
<a name="line-85"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-86"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>apply</span> <span class='hs-varid'>p</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="instance%20PrimApply%20Prim"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimApply</span> <span class='hs-conid'>Prim</span> <span class='hs-keyword'>where</span>
<a name="line-89"></a> <span class='hs-varid'>applyPrimFL</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-90"></a> <span class='hs-varid'>applyPrimFL</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f</span> <span class='hs-varid'>h</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Hunk</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-conop'>:>:</span><span class='hs-varid'>the_ps</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>spanFL</span> <span class='hs-varid'>f_hunk</span> <span class='hs-varid'>the_ps</span> <span class='hs-keyword'>of</span>
<a name="line-92"></a> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ps'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-93"></a> <span class='hs-keyword'>do</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>foo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>mapFL_FL</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>h'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>h'</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-94"></a> <span class='hs-varid'>mModifyFilePS</span> <span class='hs-varid'>f</span> <span class='hs-varop'>$</span> <span class='hs-varid'>hunkmod</span> <span class='hs-varid'>foo</span>
<a name="line-95"></a> <span class='hs-varid'>applyPrimFL</span> <span class='hs-varid'>ps'</span>
<a name="line-96"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f_hunk</span> <span class='hs-layout'>(</span><span class='hs-conid'>FP</span> <span class='hs-varid'>f'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Hunk</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>f</span> <span class='hs-varop'>==</span> <span class='hs-varid'>f'</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-97"></a> <span class='hs-varid'>f_hunk</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-98"></a> <span class='hs-varid'>hunkmod</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Tree</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-conid'>FilePatchType</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>
<a name="line-99"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-100"></a> <span class='hs-varid'>hunkmod</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>ps</span>
<a name="line-101"></a> <span class='hs-varid'>hunkmod</span> <span class='hs-layout'>(</span><span class='hs-conid'>Hunk</span> <span class='hs-varid'>line</span> <span class='hs-varid'>old</span> <span class='hs-varid'>new</span><span class='hs-conop'>:>:</span><span class='hs-varid'>hs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span>
<a name="line-102"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>applyHunkLines</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>line</span><span class='hs-layout'>,</span><span class='hs-varid'>old</span><span class='hs-layout'>,</span><span class='hs-varid'>new</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>of</span>
<a name="line-103"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>hunkmod</span> <span class='hs-varid'>hs</span> <span class='hs-varid'>ps'</span>
<a name="line-104"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"### Error applying:\n"</span> <span class='hs-varop'>++</span>
<a name="line-105"></a> <span class='hs-layout'>(</span><span class='hs-varid'>renderString</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showHunk</span> <span class='hs-conid'>NewFormat</span> <span class='hs-varid'>f</span> <span class='hs-varid'>line</span> <span class='hs-varid'>old</span> <span class='hs-varid'>new</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-106"></a> <span class='hs-str'>"\n### to file "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>f</span> <span class='hs-varop'>++</span> <span class='hs-str'>":\n"</span> <span class='hs-varop'>++</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>unpack</span> <span class='hs-varid'>ps</span>
<a name="line-107"></a> <span class='hs-varid'>hunkmod</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-108"></a> <span class='hs-varid'>applyPrimFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:>:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>apply</span> <span class='hs-varid'>p</span>
<a name="line-109"></a> <span class='hs-varid'>applyPrimFL</span> <span class='hs-varid'>ps</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="applyHunks"></a><span class='hs-definition'>applyHunks</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-112"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span>
<a name="line-113"></a><span class='hs-definition'>applyHunks</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>ps</span><span class='hs-keyglyph'>]</span>
<a name="line-114"></a><span class='hs-definition'>applyHunks</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>hs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span>
<a name="line-115"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakBeforeNthNewline</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-comment'>-</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>of</span>
<a name="line-116"></a> <span class='hs-layout'>(</span><span class='hs-varid'>prfix</span><span class='hs-layout'>,</span> <span class='hs-varid'>after_prefix</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>rest</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>applyHunks</span> <span class='hs-varid'>hs</span> <span class='hs-varid'>after_prefix</span>
<a name="line-117"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intersperse</span> <span class='hs-varid'>nl</span> <span class='hs-layout'>(</span><span class='hs-varid'>prfix</span><span class='hs-conop'>:</span><span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rest</span>
<a name="line-118"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>nl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'\n'</span>
<a name="line-119"></a><span class='hs-definition'>applyHunks</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>o</span><span class='hs-layout'>,</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>hs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span>
<a name="line-120"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakBeforeNthNewline</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-comment'>-</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>of</span>
<a name="line-121"></a> <span class='hs-layout'>(</span><span class='hs-varid'>prfix</span><span class='hs-layout'>,</span> <span class='hs-varid'>after_prefix</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-122"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakBeforeNthNewline</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-varid'>after_prefix</span> <span class='hs-keyword'>of</span>
<a name="line-123"></a> <span class='hs-layout'>(</span><span class='hs-varid'>oo</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>oo</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>unlinesPS</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-conop'>:</span><span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-str'>"applyHunks error"</span>
<a name="line-124"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>suffix</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-125"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>rest</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>applyHunks</span> <span class='hs-varid'>hs</span> <span class='hs-varid'>suffix</span>
<a name="line-126"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intersperse</span> <span class='hs-varid'>nl</span> <span class='hs-layout'>(</span><span class='hs-varid'>prfix</span><span class='hs-conop'>:</span><span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rest</span>
<a name="line-127"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>nl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'\n'</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="applyHunkLines"></a><span class='hs-definition'>applyHunkLines</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-130"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileContents</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>FileContents</span>
<a name="line-131"></a><span class='hs-definition'>applyHunkLines</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>c</span>
<a name="line-132"></a><span class='hs-definition'>applyHunkLines</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unlinesPS</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-varop'>++</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-133"></a><span class='hs-definition'>applyHunkLines</span> <span class='hs-varid'>hs</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>o</span><span class='hs-layout'>,</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>hs'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span>
<a name="line-134"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>pss</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>l</span> <span class='hs-keyword'>of</span>
<a name="line-135"></a> <span class='hs-num'>1</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakAfterNthNewline</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>of</span>
<a name="line-136"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>if</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>==</span> <span class='hs-varid'>unlinesPS</span> <span class='hs-varid'>o</span>
<a name="line-137"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intersperse</span> <span class='hs-varid'>nl</span> <span class='hs-varid'>n</span>
<a name="line-138"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>fail</span> <span class='hs-str'>"applyHunkLines: Unexpected hunks"</span>
<a name="line-139"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>shouldbeo</span><span class='hs-layout'>,</span> <span class='hs-varid'>suffix</span><span class='hs-layout'>)</span>
<a name="line-140"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>shouldbeo</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>unlinesPS</span> <span class='hs-layout'>(</span><span class='hs-varid'>o</span><span class='hs-varop'>++</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-141"></a> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"applyHunkLines: Bad patch!"</span>
<a name="line-142"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>-></span>
<a name="line-143"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>applyHunkLines</span> <span class='hs-varid'>hs'</span> <span class='hs-varid'>suffix</span>
<a name="line-144"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-145"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span>
<a name="line-146"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>rest</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>applyHunks</span> <span class='hs-varid'>hs'</span> <span class='hs-varid'>suffix</span>
<a name="line-147"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intersperse</span> <span class='hs-varid'>nl</span> <span class='hs-varid'>n</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nl</span><span class='hs-conop'>:</span><span class='hs-varid'>rest</span>
<a name="line-148"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>l</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>bug</span> <span class='hs-str'>"Prim.applyHunkLines: After -ve lines?"</span>
<a name="line-149"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>applyHunks</span> <span class='hs-varid'>hs</span> <span class='hs-varid'>ps</span>
<a name="line-150"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>result</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varid'>pss</span>
<a name="line-151"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>result</span>
<a name="line-152"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>nl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-chr'>'\n'</span>
</pre></body>
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