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<title>src/Darcs/Patch/V2/Real.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2007 David Roundy</span>
<a name="line-2"></a><span class='hs-comment'>--</span>
<a name="line-3"></a><span class='hs-comment'>-- This program is free software; you can redistribute it and/or modify</span>
<a name="line-4"></a><span class='hs-comment'>-- it under the terms of the GNU General Public License as published by</span>
<a name="line-5"></a><span class='hs-comment'>-- the Free Software Foundation; either version 2, or (at your option)</span>
<a name="line-6"></a><span class='hs-comment'>-- any later version.</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- This program is distributed in the hope that it will be useful,</span>
<a name="line-9"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-10"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="line-11"></a><span class='hs-comment'>-- GNU General Public License for more details.</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- You should have received a copy of the GNU General Public License</span>
<a name="line-14"></a><span class='hs-comment'>-- along with this program; see the file COPYING. If not, write to</span>
<a name="line-15"></a><span class='hs-comment'>-- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="line-16"></a><span class='hs-comment'>-- Boston, MA 02110-1301, USA.</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans -fno-warn-name-shadowing #-}</span>
<a name="line-19"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-22"></a>
<a name="line-23"></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'>V2</span><span class='hs-varop'>.</span><span class='hs-conid'>Real</span>
<a name="line-24"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>RealPatch</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prim2real</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isConsistent</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isForward</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isDuplicate</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mergeUnravelled</span>
<a name="line-30"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-31"></a>
<a name="line-32"></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'>mplus</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftM</span> <span class='hs-layout'>)</span>
<a name="line-33"></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-conid'>ByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span> <span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>)</span>
<a name="line-35"></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'>partition</span><span class='hs-layout'>,</span> <span class='hs-varid'>nub</span> <span class='hs-layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>ColorPrinter</span> <span class='hs-layout'>(</span> <span class='hs-varid'>errorDoc</span><span class='hs-layout'>,</span> <span class='hs-varid'>assertDoc</span> <span class='hs-layout'>)</span>
<a name="line-38"></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'>Commute</span> <span class='hs-layout'>(</span> <span class='hs-varid'>commuteFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteFLorComplain</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteRL</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>commuteRLFL</span> <span class='hs-layout'>)</span>
<a name="line-40"></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'>Conflict</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Conflict</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'>CommuteNoConflicts</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>IsConflictedPrim</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'>ConflictState</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-42"></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'>ConflictMarking</span> <span class='hs-layout'>(</span> <span class='hs-varid'>mangleUnravelled</span> <span class='hs-layout'>)</span>
<a name="line-43"></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'>Effect</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Effect</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-44"></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'>FileHunk</span> <span class='hs-layout'>(</span> <span class='hs-conid'>IsHunk</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-45"></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'>PatchListFormat</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'>ListFormat</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FileNameFormat</span><span class='hs-layout'>(</span><span class='hs-conid'>NewFormat</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-47"></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'>Invert</span> <span class='hs-layout'>(</span> <span class='hs-varid'>invertFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>invertRL</span> <span class='hs-layout'>)</span>
<a name="line-48"></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'>Merge</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Merge</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-49"></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-layout'>(</span> <span class='hs-conid'>FromPrim</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'>ToFromPrim</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'>showPrim</span><span class='hs-layout'>,</span> <span class='hs-varid'>showPrimFL</span>
<a name="line-50"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readPrim</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrimOf</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrimPatchBase</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-layout'>)</span>
<a name="line-51"></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'>Read</span> <span class='hs-layout'>(</span> <span class='hs-varid'>bracketedFL</span> <span class='hs-layout'>)</span>
<a name="line-52"></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'>ReadMonads</span> <span class='hs-layout'>(</span> <span class='hs-varid'>skipSpace</span><span class='hs-layout'>,</span> <span class='hs-varid'>string</span><span class='hs-layout'>,</span> <span class='hs-varid'>choice</span> <span class='hs-layout'>)</span>
<a name="line-53"></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-varid'>mapMaybeSnd</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> <span class='hs-conid'>Check</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-54"></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'>Patchy</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Patchy</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> <span class='hs-conid'>Commute</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'>PatchInspect</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ReadPatch</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'>ShowPatch</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'>Invert</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-56"></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'>Permutations</span> <span class='hs-layout'>(</span> <span class='hs-varid'>commuteWhatWeCanFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteWhatWeCanRL</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>genCommuteWhatWeCanRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeFL</span>
<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>removeSubsequenceFL</span> <span class='hs-layout'>)</span>
<a name="line-59"></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'>Show</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ShowPatchBasic</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-60"></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'>Summary</span> <span class='hs-layout'>(</span> <span class='hs-varid'>plainSummary</span> <span class='hs-layout'>)</span>
<a name="line-61"></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'>V2</span><span class='hs-varop'>.</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Non</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'>Nonable</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'>unNon</span><span class='hs-layout'>,</span> <span class='hs-varid'>showNons</span><span class='hs-layout'>,</span> <span class='hs-varid'>showNon</span>
<a name="line-62"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readNons</span><span class='hs-layout'>,</span> <span class='hs-varid'>readNon</span><span class='hs-layout'>,</span> <span class='hs-varid'>commutePrimsOrAddToCtx</span>
<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>commuteOrAddToCtx</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteOrAddToCtxRL</span>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>commuteOrRemFromCtx</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteOrRemFromCtxFL</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>remNons</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>*></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>>*</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>*>></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>>>*</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-66"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>nubsort</span> <span class='hs-layout'>)</span>
<a name="line-67"></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'>unsafeCoerceP</span> <span class='hs-layout'>)</span>
<a name="line-68"></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'>Eq</span> <span class='hs-layout'>(</span> <span class='hs-conid'>MyEq</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'>EqCheck</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-69"></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-conid'>RL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</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> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>+<+</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mapFL_FL</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseFL</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> <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>
<a name="line-71"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>reverseRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>lengthFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>lengthRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>nullFL</span> <span class='hs-layout'>)</span>
<a name="line-72"></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'>Sealed</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FlippedSeal</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'>Sealed</span><span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapSeal</span>
<a name="line-73"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unseal</span> <span class='hs-layout'>)</span>
<a name="line-74"></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'>Show</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Show2</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'>ShowDict</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-75"></a>
<a name="line-76"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Doc</span><span class='hs-layout'>,</span> <span class='hs-varid'>renderString</span><span class='hs-layout'>,</span> <span class='hs-varid'>blueText</span><span class='hs-layout'>,</span> <span class='hs-varid'>redText</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><+></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>$$</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-77"></a>
<a name="line-78"></a><span class='hs-cpp'>#include "impossible.h"</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- |'RealPatch' is used to represents prim patches that are duplicates of, or</span>
<a name="line-81"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- conflict with, another prim patch in the repository.</span>
<a name="line-82"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-83"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @Normal prim@: A primitive patch</span>
<a name="line-84"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-85"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @Duplicate x@: This patch has no effect since @x@ is already present in the</span>
<a name="line-86"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- repository.</span>
<a name="line-87"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-88"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @Etacilpud x: invert (Duplicate x)@</span>
<a name="line-89"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-90"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @Conflictor ix xx x@:</span>
<a name="line-91"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @ix@ is the set of patches:</span>
<a name="line-92"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- * that conflict with @x@ and also conflict with another patch in the</span>
<a name="line-93"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- repository.</span>
<a name="line-94"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- * that conflict with a patch that conflict with @x@</span>
<a name="line-95"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-96"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @xx@ is the sequence of patches that conflict *only* with @x@</span>
<a name="line-97"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-98"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @x@ is the original, conflicting patch.</span>
<a name="line-99"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-100"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @ix@ and @x@ are stored as @Non@ objects, which include any necessary</span>
<a name="line-101"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- context to uniquely define the patch that is referred to.</span>
<a name="line-102"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-103"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- The intuition is that a Conflictor should have the effect of inverting any</span>
<a name="line-104"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- patches that 'x' conflicts with, that haven't already been undone by another</span>
<a name="line-105"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- Conflictor in the repository.</span>
<a name="line-106"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- Therefore, the effect of a Conflictor is @invert xx@.</span>
<a name="line-107"></a><a name="PrimPatchBase"></a><span class='hs-comment'>--</span>
<a name="line-108"></a><a name="PrimPatchBase"></a><span class='hs-comment'>-- @InvConflictor ix xx x@: like @invert (Conflictor ix xx x)@</span>
<a name="line-109"></a><a name="PrimPatchBase"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</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-keyword'>where</span>
<a name="line-110"></a> <span class='hs-conid'>Duplicate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-111"></a> <span class='hs-conid'>Etacilpud</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-conid'>Normal</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>prim</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-conid'>RealPatch</span> <span class='hs-varid'>prim</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-113"></a> <span class='hs-conid'>Conflictor</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-114"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-conid'>InvConflictor</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-116"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>RealPatch</span> <span class='hs-varid'>prim</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-117"></a>
<a name="line-118"></a><a name="instance%20PrimPatchBase%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PrimPatchBase</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-119"></a> <span class='hs-keyword'>type</span> <span class='hs-conid'>PrimOf</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prim</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="isDuplicate"></a><span class='hs-comment'>-- | 'isDuplicate' @p@ is @True@ if @p@ is either a 'Duplicate' or 'Etacilpud'</span>
<a name="line-122"></a><span class='hs-comment'>-- patch.</span>
<a name="line-123"></a><span class='hs-definition'>isDuplicate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-124"></a><span class='hs-definition'>isDuplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-125"></a><span class='hs-definition'>isDuplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-126"></a><span class='hs-definition'>isDuplicate</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="isForward"></a><span class='hs-comment'>-- | 'isForward' @p@ is @True@ if @p@ is either an 'InvConflictor' or</span>
<a name="line-129"></a><span class='hs-comment'>-- 'Etacilpud'.</span>
<a name="line-130"></a><span class='hs-definition'>isForward</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Doc</span>
<a name="line-131"></a><span class='hs-definition'>isForward</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-132"></a> <span class='hs-varid'>p</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>justRedP</span> <span class='hs-str'>"An inverse conflictor"</span> <span class='hs-varid'>p</span>
<a name="line-133"></a> <span class='hs-varid'>p</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>justRedP</span> <span class='hs-str'>"An inverse duplicate"</span> <span class='hs-varid'>p</span>
<a name="line-134"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-135"></a> <span class='hs-keyword'>where</span>
<a name="line-136"></a> <span class='hs-varid'>justRedP</span> <span class='hs-varid'>msg</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-varid'>msg</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>p</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="mergeUnravelled"></a><span class='hs-comment'>-- |'mergeUnravelled' is used when converting from Darcs V1 patches (Mergers)</span>
<a name="line-139"></a><span class='hs-comment'>-- to Darcs V2 patches (Conflictors).</span>
<a name="line-140"></a><span class='hs-definition'>mergeUnravelled</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-141"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FlippedSeal</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-142"></a><span class='hs-definition'>mergeUnravelled</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-143"></a><span class='hs-definition'>mergeUnravelled</span> <span class='hs-keyglyph'>[</span><span class='hs-keyword'>_</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-144"></a><span class='hs-definition'>mergeUnravelled</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>=</span>
<a name="line-145"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mergeUnravelled_private</span> <span class='hs-varid'>ws</span> <span class='hs-keyword'>of</span>
<a name="line-146"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-147"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>bug</span> <span class='hs-str'>"found no patches in mergeUnravelled"</span>
<a name="line-148"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>z</span> <span class='hs-conop'>:<:</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>FlippedSeal</span> <span class='hs-varid'>z</span>
<a name="line-149"></a> <span class='hs-keyword'>where</span>
<a name="line-150"></a> <span class='hs-varid'>notNullS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-151"></a> <span class='hs-varid'>notNullS</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-152"></a> <span class='hs-varid'>notNullS</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-153"></a>
<a name="line-154"></a> <span class='hs-varid'>mergeUnravelled_private</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-155"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-156"></a> <span class='hs-varid'>mergeUnravelled_private</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>nonNullXs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-varid'>notNullS</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>in</span>
<a name="line-157"></a> <span class='hs-varid'>reverseFL</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>mergeConflictingNons</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>sealed2non</span> <span class='hs-varid'>nonNullXs</span><span class='hs-layout'>)</span>
<a name="line-158"></a>
<a name="line-159"></a> <span class='hs-comment'>-- | 'sealed2non' @(Sealed xs)@ converts @xs@ to a 'Non'.</span>
<a name="line-160"></a> <span class='hs-comment'>-- @xs@ must be non-empty since we split this list at the last patch,</span>
<a name="line-161"></a> <span class='hs-comment'>-- taking @init xs@ as the context of @last xs@.</span>
<a name="line-162"></a> <span class='hs-varid'>sealed2non</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-163"></a> <span class='hs-varid'>sealed2non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-164"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-165"></a> <span class='hs-varid'>y</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapFL_FL</span> <span class='hs-varid'>fromPrim</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-166"></a> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>bug</span> <span class='hs-str'>"NilFL encountered in sealed2non"</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="mergeConflictingNons"></a><span class='hs-definition'>mergeConflictingNons</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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>
<a name="line-169"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-170"></a><span class='hs-definition'>mergeConflictingNons</span> <span class='hs-varid'>ns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mcn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>unNon</span> <span class='hs-varid'>ns</span>
<a name="line-171"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>mcn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-172"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-173"></a> <span class='hs-varid'>mcn</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>NilFL</span>
<a name="line-174"></a> <span class='hs-comment'>-- Apparently, the joinEffects call is a safety check "and could be</span>
<a name="line-175"></a> <span class='hs-comment'>-- removed when we're sure of the code"!</span>
<a name="line-176"></a> <span class='hs-varid'>mcn</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>p</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-177"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>p</span>
<a name="line-178"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-179"></a> <span class='hs-varid'>mcn</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>p1</span><span class='hs-conop'>:</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>p2</span><span class='hs-conop'>:</span><span class='hs-varid'>zs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-180"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommon</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span> <span class='hs-keyword'>of</span>
<a name="line-181"></a> <span class='hs-conid'>Common</span> <span class='hs-varid'>c</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>qs</span> <span class='hs-keyglyph'>-></span>
<a name="line-182"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>qs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-183"></a> <span class='hs-varid'>qs'</span> <span class='hs-conop'>:/\:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mcn</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>qs'</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>zs</span><span class='hs-layout'>)</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="joinEffects"></a><span class='hs-definition'>joinEffects</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>p</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-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>Effect</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-186"></a> <span class='hs-conid'>Commute</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>MyEq</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>p</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-187"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-188"></a><span class='hs-definition'>joinEffects</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>joinInverses</span> <span class='hs-varop'>.</span> <span class='hs-varid'>effect</span>
<a name="line-189"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>joinInverses</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-190"></a> <span class='hs-varid'>joinInverses</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilFL</span>
<a name="line-191"></a> <span class='hs-varid'>joinInverses</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>
<a name="line-192"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>joinInverses</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>in</span>
<a name="line-193"></a> <span class='hs-varid'>fromMaybe</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-varop'>$</span> <span class='hs-varid'>removeFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps'</span>
<a name="line-194"></a>
<a name="line-195"></a><a name="assertConsistent"></a><span class='hs-definition'>assertConsistent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</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-196"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</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-197"></a><span class='hs-definition'>assertConsistent</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>assertDoc</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-198"></a> <span class='hs-varid'>e</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isConsistent</span> <span class='hs-varid'>x</span>
<a name="line-199"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>redText</span> <span class='hs-str'>"Inconsistent patch:"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>x</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-200"></a>
<a name="line-201"></a><span class='hs-comment'>-- | @mergeAfterConflicting@ takes as input a sequence of conflicting patches</span>
<a name="line-202"></a><span class='hs-comment'>-- @xxx@ (which therefore have no effect) and a sequence of primitive patches</span>
<a name="line-203"></a><span class='hs-comment'>-- @yyy@ that follow said sequence of conflicting patches, and may depend upon</span>
<a name="line-204"></a><span class='hs-comment'>-- some of the conflicting patches (as a resolution).</span>
<a name="line-205"></a>
<a name="line-206"></a><span class='hs-comment'>-- The output is two sequences of patches the first consisting of a set of</span>
<a name="line-207"></a><span class='hs-comment'>-- mutually-conflicting patches, and the second having the same effect as the</span>
<a name="line-208"></a><span class='hs-comment'>-- original primitive patch sequence in the input.</span>
<a name="line-209"></a>
<a name="line-210"></a><span class='hs-comment'>-- So far as I can tell, the second output is always identical to @mapFL Normal</span>
<a name="line-211"></a><span class='hs-comment'>-- yyy@</span>
<a name="line-212"></a>
<a name="line-213"></a><a name="mergeAfterConflicting"></a><span class='hs-comment'>-- The first output is the set of patches from @xxx@ that are depended upon by</span>
<a name="line-214"></a><span class='hs-comment'>-- @yyy@.</span>
<a name="line-215"></a><span class='hs-definition'>mergeAfterConflicting</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-216"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-conid'>Maybe</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-217"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-218"></a><span class='hs-definition'>mergeAfterConflicting</span> <span class='hs-varid'>xxx</span> <span class='hs-varid'>yyy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mac</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>xxx</span><span class='hs-layout'>)</span> <span class='hs-varid'>yyy</span> <span class='hs-conid'>NilFL</span>
<a name="line-219"></a> <span class='hs-keyword'>where</span>
<a name="line-220"></a> <span class='hs-varid'>mac</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span>
<a name="line-221"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>FL</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-222"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>z</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-223"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-224"></a> <span class='hs-varid'>mac</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>goneby</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varid'>goneby</span> <span class='hs-keyword'>of</span>
<a name="line-225"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapFL_FL</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-226"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-227"></a> <span class='hs-varid'>mac</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-varid'>xs</span> <span class='hs-varid'>goneby</span> <span class='hs-keyglyph'>=</span>
<a name="line-228"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteFLorComplain</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-varid'>mapFL_FL</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-229"></a> <span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-230"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>genCommuteWhatWeCanRL</span> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-231"></a> <span class='hs-varid'>a</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-232"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>(</span><span class='hs-varid'>b'</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mac</span> <span class='hs-varid'>b</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>goneby</span>
<a name="line-233"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>pa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>a</span>
<a name="line-234"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varid'>pa</span>
<a name="line-235"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>b'</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span>
<a name="line-236"></a> <span class='hs-varop'>`mplus`</span>
<a name="line-237"></a> <span class='hs-keyword'>do</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varid'>goneby</span>
<a name="line-238"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>joinEffects</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>
<a name="line-239"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</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-layout'>,</span> <span class='hs-varid'>mapFL_FL</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-240"></a> <span class='hs-conid'>Right</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p''</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-241"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>allNormal</span> <span class='hs-varid'>l</span> <span class='hs-keyword'>of</span>
<a name="line-242"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>xs''</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mac</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>xs''</span> <span class='hs-layout'>(</span><span class='hs-varid'>p''</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>goneby</span><span class='hs-layout'>)</span>
<a name="line-243"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span>
<a name="line-244"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>genCommuteWhatWeCanRL</span> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-245"></a> <span class='hs-varid'>a</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-246"></a> <span class='hs-keyword'>do</span> <span class='hs-layout'>(</span><span class='hs-varid'>b'</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mac</span> <span class='hs-varid'>b</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>goneby</span>
<a name="line-247"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>pa</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>a</span>
<a name="line-248"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varid'>pa</span>
<a name="line-249"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>b'</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span>
<a name="line-250"></a>
<a name="line-251"></a><a name="geteff"></a><span class='hs-definition'>geteff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-252"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>,</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-253"></a><span class='hs-definition'>geteff</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-254"></a><span class='hs-definition'>geteff</span> <span class='hs-varid'>ix</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ix'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrRemFromCtx</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span>
<a name="line-255"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>geteff</span> <span class='hs-varid'>ix'</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-256"></a> <span class='hs-layout'>(</span><span class='hs-varid'>ns</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ns</span>
<a name="line-257"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span>
<a name="line-258"></a><span class='hs-definition'>geteff</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-keyglyph'>=</span>
<a name="line-259"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mergeConflictingNons</span> <span class='hs-varid'>ix</span> <span class='hs-keyword'>of</span>
<a name="line-260"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>errorDoc</span> <span class='hs-varop'>$</span>
<a name="line-261"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"mergeConflictingNons failed in geteff: ix"</span> <span class='hs-varop'>$$</span>
<a name="line-262"></a> <span class='hs-varid'>showNons</span> <span class='hs-varid'>ix</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"xx"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>xx</span>
<a name="line-263"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>rix</span> <span class='hs-keyglyph'>-></span>
<a name="line-264"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mergeAfterConflicting</span> <span class='hs-varid'>rix</span> <span class='hs-varid'>xx</span> <span class='hs-keyword'>of</span>
<a name="line-265"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-266"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrAddToCtxRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toNons</span> <span class='hs-varid'>x</span>
<a name="line-267"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>a</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-268"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span>
<a name="line-269"></a> <span class='hs-varid'>errorDoc</span> <span class='hs-varop'>$</span>
<a name="line-270"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"mergeAfterConflicting failed in geteff"</span> <span class='hs-varop'>$$</span>
<a name="line-271"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"where ix"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showNons</span> <span class='hs-varid'>ix</span> <span class='hs-varop'>$$</span>
<a name="line-272"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"and xx"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>xx</span> <span class='hs-varop'>$$</span>
<a name="line-273"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"and rix"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>rix</span>
<a name="line-274"></a>
<a name="line-275"></a><a name="xx2nons"></a><span class='hs-definition'>xx2nons</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-276"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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>
<a name="line-277"></a><span class='hs-definition'>xx2nons</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>$</span> <span class='hs-varid'>geteff</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span>
<a name="line-278"></a>
<a name="line-279"></a><a name="xx2patches"></a><span class='hs-definition'>xx2patches</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-280"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-281"></a><span class='hs-definition'>xx2patches</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>snd</span> <span class='hs-varop'>$</span> <span class='hs-varid'>geteff</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span>
<a name="line-282"></a>
<a name="line-283"></a><a name="allNormal"></a><span class='hs-comment'>-- | If @xs@ consists only of 'Normal' patches, 'allNormal' @xs@ returns</span>
<a name="line-284"></a><span class='hs-comment'>-- @Just pxs@ those patches (so @lengthFL pxs == lengthFL xs@).</span>
<a name="line-285"></a><span class='hs-comment'>-- Otherwise, it returns 'Nothing'.</span>
<a name="line-286"></a><span class='hs-definition'>allNormal</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-layout'>)</span>
<a name="line-287"></a><span class='hs-definition'>allNormal</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>allNormal</span> <span class='hs-varid'>xs</span>
<a name="line-288"></a><span class='hs-definition'>allNormal</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>NilFL</span>
<a name="line-289"></a><span class='hs-definition'>allNormal</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-290"></a>
<a name="line-291"></a><a name="isConsistent"></a><span class='hs-comment'>-- | This is used for unit-testing and for internal sanity checks</span>
<a name="line-292"></a><span class='hs-definition'>isConsistent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</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-conid'>Maybe</span> <span class='hs-conid'>Doc</span>
<a name="line-293"></a><span class='hs-definition'>isConsistent</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-294"></a><span class='hs-definition'>isConsistent</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-295"></a><span class='hs-definition'>isConsistent</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-296"></a><span class='hs-definition'>isConsistent</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isConsistent</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-297"></a><span class='hs-definition'>isConsistent</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>im</span> <span class='hs-varid'>mm</span> <span class='hs-varid'>m</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>deps</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-298"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>everyoneConflicts</span> <span class='hs-varid'>im</span> <span class='hs-keyglyph'>=</span>
<a name="line-299"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"Someone doesn't conflict in im in isConsistent"</span>
<a name="line-300"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteOrRemFromCtxFL</span> <span class='hs-varid'>rmm</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:>:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mm</span> <span class='hs-keyglyph'>=</span>
<a name="line-301"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"m doesn't conflict with mm in isConsistent"</span>
<a name="line-302"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>`conflictsWith`</span><span class='hs-layout'>)</span> <span class='hs-varid'>nmm</span><span class='hs-layout'>)</span> <span class='hs-varid'>im</span> <span class='hs-keyglyph'>=</span>
<a name="line-303"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"mm conflicts with im in isConsistent where nmm is"</span> <span class='hs-varop'>$$</span>
<a name="line-304"></a> <span class='hs-varid'>showNons</span> <span class='hs-varid'>nmm</span>
<a name="line-305"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>nmm</span> <span class='hs-varop'>++</span> <span class='hs-varid'>im</span><span class='hs-layout'>)</span> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>toNons</span> <span class='hs-varid'>deps</span> <span class='hs-keyglyph'>=</span>
<a name="line-306"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"dependencies not in conflict:"</span> <span class='hs-varop'>$$</span>
<a name="line-307"></a> <span class='hs-varid'>showNons</span> <span class='hs-layout'>(</span><span class='hs-varid'>toNons</span> <span class='hs-varid'>deps</span><span class='hs-layout'>)</span> <span class='hs-varop'>$$</span>
<a name="line-308"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"compared with deps itself:"</span> <span class='hs-varop'>$$</span>
<a name="line-309"></a> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>deps</span>
<a name="line-310"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-311"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>allConflictsWith</span> <span class='hs-varid'>m</span> <span class='hs-varid'>im</span> <span class='hs-keyword'>of</span>
<a name="line-312"></a> <span class='hs-layout'>(</span><span class='hs-varid'>im1</span><span class='hs-layout'>,</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>im1</span> <span class='hs-varop'>`eqSet`</span> <span class='hs-varid'>im</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-313"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>imnc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-layout'>(</span><span class='hs-str'>"m doesn't conflict with im in "</span>
<a name="line-314"></a> <span class='hs-varop'>++</span> <span class='hs-str'>"isConsistent. unconflicting:"</span><span class='hs-layout'>)</span> <span class='hs-varop'>$$</span>
<a name="line-315"></a> <span class='hs-varid'>showNons</span> <span class='hs-varid'>imnc</span>
<a name="line-316"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>nmm</span><span class='hs-layout'>,</span> <span class='hs-varid'>rmm</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>geteff</span> <span class='hs-varid'>im</span> <span class='hs-varid'>mm</span>
<a name="line-317"></a>
<a name="line-318"></a><a name="everyoneConflicts"></a><span class='hs-definition'>everyoneConflicts</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-319"></a><span class='hs-definition'>everyoneConflicts</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-320"></a><span class='hs-definition'>everyoneConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>allConflictsWith</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-321"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-322"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>everyoneConflicts</span> <span class='hs-varid'>xs'</span>
<a name="line-323"></a>
<a name="line-324"></a><a name="prim2real"></a><span class='hs-definition'>prim2real</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>prim</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-conid'>RealPatch</span> <span class='hs-varid'>prim</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-325"></a><span class='hs-definition'>prim2real</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Normal</span>
<a name="line-326"></a>
<a name="line-327"></a><a name="instance%20Patchy%20(RealPatch%20prim)%20mergeWith%20::%20PrimPatch%20prim%20=%3e%20Non%20(RealPatch%20prim)%20C(x)%20-%3e%20%5bNon%20(RealPatch%20prim)%20C(x)%5d%20-%3e%20Sealed%20(FL%20prim%20C(x))%20mergeWith%20p%20%5b%5d%20=%20effect%20%60mapSeal%60%20unNon%20p%20mergeWith%20p%20xs%20=%20mergeall%20.%20map%20unNon%20.%20(p%20:)%20.%20unconflicting_of%20$%20nonDependsOrConflictsP%20xs"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Patchy</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span>
<a name="line-328"></a>
<a name="line-329"></a><a name="mergeWith"></a><span class='hs-definition'>mergeWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-330"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>-></span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-layout'>)</span>
<a name="line-331"></a><span class='hs-definition'>mergeWith</span> <span class='hs-varid'>p</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>effect</span> <span class='hs-varop'>`mapSeal`</span> <span class='hs-varid'>unNon</span> <span class='hs-varid'>p</span>
<a name="line-332"></a><span class='hs-definition'>mergeWith</span> <span class='hs-varid'>p</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span>
<a name="line-333"></a> <span class='hs-varid'>mergeall</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>unNon</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unconflicting_of</span> <span class='hs-varop'>$</span> <span class='hs-varid'>nonDependsOrConflictsP</span> <span class='hs-varid'>xs</span>
<a name="line-334"></a> <span class='hs-keyword'>where</span>
<a name="line-335"></a> <span class='hs-varid'>nonDependsOrConflictsP</span> <span class='hs-keyglyph'>=</span>
<a name="line-336"></a> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`dependsUpon`</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>`conflictsWith`</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-337"></a> <span class='hs-varid'>mergeall</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-338"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-layout'>)</span>
<a name="line-339"></a> <span class='hs-varid'>mergeall</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-varid'>effect</span> <span class='hs-varid'>x</span>
<a name="line-340"></a> <span class='hs-varid'>mergeall</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Sealed</span> <span class='hs-conid'>NilFL</span>
<a name="line-341"></a> <span class='hs-varid'>mergeall</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-342"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-343"></a> <span class='hs-varid'>y'</span> <span class='hs-conop'>:/\:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mergeall</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>rest</span><span class='hs-layout'>)</span>
<a name="line-344"></a> <span class='hs-varid'>unconflicting_of</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-345"></a> <span class='hs-varid'>unconflicting_of</span> <span class='hs-layout'>(</span><span class='hs-varid'>q</span> <span class='hs-conop'>:</span> <span class='hs-varid'>qs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>allConflictsWith</span> <span class='hs-varid'>q</span> <span class='hs-varid'>qs</span> <span class='hs-keyword'>of</span>
<a name="line-346"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</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'>q</span> <span class='hs-conop'>:</span> <span class='hs-varid'>qs</span>
<a name="line-347"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unconflicting_of</span> <span class='hs-varid'>nc</span>
<a name="line-348"></a>
<a name="line-349"></a><a name="instance%20Conflict%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Conflict</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-350"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IsC</span> <span class='hs-conid'>Duplicated</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-351"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-352"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IsC</span> <span class='hs-conid'>Conflicted</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-353"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-354"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IsC</span> <span class='hs-conid'>Okay</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span>
<a name="line-355"></a> <span class='hs-varid'>resolveConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>mangledUnravelled</span> <span class='hs-conop'>:</span> <span class='hs-varid'>unravelled</span><span class='hs-keyglyph'>]</span>
<a name="line-356"></a> <span class='hs-keyword'>where</span>
<a name="line-357"></a> <span class='hs-varid'>mangledUnravelled</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mangleUnravelled</span> <span class='hs-varid'>unravelled</span>
<a name="line-358"></a> <span class='hs-varid'>unravelled</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nub</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-varid'>isCons</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varop'>`mergeWith`</span> <span class='hs-varid'>xIxNonXX</span><span class='hs-layout'>)</span> <span class='hs-varid'>xIxNonXX</span>
<a name="line-359"></a> <span class='hs-varid'>xIxNonXX</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ix</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nonxx</span>
<a name="line-360"></a> <span class='hs-varid'>nonxx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nonxx_</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varop'>$</span> <span class='hs-varid'>xx2patches</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span><span class='hs-layout'>)</span>
<a name="line-361"></a> <span class='hs-comment'>-- |nonxx_ takes an RL of patches, and returns a singleton list</span>
<a name="line-362"></a> <span class='hs-comment'>-- containing a Non, in the case where we have a Normal patch at the</span>
<a name="line-363"></a> <span class='hs-comment'>-- end of the list (using the rest of the RL as context), and an empty</span>
<a name="line-364"></a> <span class='hs-comment'>-- list otherwise.</span>
<a name="line-365"></a> <span class='hs-varid'>nonxx_</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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>
<a name="line-366"></a> <span class='hs-varid'>nonxx_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>q</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>qs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varid'>qs</span><span class='hs-layout'>)</span> <span class='hs-varid'>q</span><span class='hs-keyglyph'>]</span>
<a name="line-367"></a> <span class='hs-varid'>nonxx_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-368"></a> <span class='hs-varid'>isCons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unseal</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>nullFL</span><span class='hs-layout'>)</span>
<a name="line-369"></a> <span class='hs-varid'>resolveConflicts</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-370"></a>
<a name="line-371"></a><a name="instance%20CommuteNoConflicts%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-372"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>d1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>d2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>d2</span> <span class='hs-conop'>:></span> <span class='hs-varid'>d1</span><span class='hs-layout'>)</span>
<a name="line-373"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>d</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span> <span class='hs-conop'>:></span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-374"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>e</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span> <span class='hs-conop'>:></span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-375"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>e1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>e2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>e2</span> <span class='hs-conop'>:></span> <span class='hs-varid'>e1</span><span class='hs-layout'>)</span>
<a name="line-376"></a>
<a name="line-377"></a> <span class='hs-comment'>-- If the duplicate is @x@, as a 'Non', with @invert x@ as the context,</span>
<a name="line-378"></a> <span class='hs-comment'>-- then it is the patch the duplicate @d@ represents, so commuting results</span>
<a name="line-379"></a> <span class='hs-comment'>-- in the same two patches (since we'd make one a duplicate, and the other</span>
<a name="line-380"></a> <span class='hs-comment'>-- would become @x@ as it would no longer be duplicated).</span>
<a name="line-381"></a> <span class='hs-comment'>-- Otherwise, we commute past, or remove @invert x@ from the context of @d@</span>
<a name="line-382"></a> <span class='hs-comment'>-- to obtain a new Duplicate.</span>
<a name="line-383"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>orig</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-384"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-varid'>commuteOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>non</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-385"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>orig</span>
<a name="line-386"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>d'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteOrRemFromCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>d</span>
<a name="line-387"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-388"></a>
<a name="line-389"></a> <span class='hs-comment'>-- Commuting a Duplicate and any other patch simply places @invert x@ into</span>
<a name="line-390"></a> <span class='hs-comment'>-- the context of the non @d@, by commuting past, or adding to the context.</span>
<a name="line-391"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-392"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Duplicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-393"></a>
<a name="line-394"></a> <span class='hs-comment'>-- handle Etacilpud cases by first inverting, then using the previous</span>
<a name="line-395"></a> <span class='hs-comment'>-- definitions.</span>
<a name="line-396"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommuteNC</span> <span class='hs-varid'>c</span>
<a name="line-397"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommuteNC</span> <span class='hs-varid'>c</span>
<a name="line-398"></a>
<a name="line-399"></a> <span class='hs-comment'>-- Two normal patches should be simply commuted (assuming the can).</span>
<a name="line-400"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-401"></a> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-402"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-403"></a>
<a name="line-404"></a> <span class='hs-comment'>-- Commuting a Normal patch past a Conflictor first commutes @x@ past the</span>
<a name="line-405"></a> <span class='hs-comment'>-- effect of the Conflictor, then commutes the resulting @x'@ past the</span>
<a name="line-406"></a> <span class='hs-comment'>-- conflicting patch and the already-undone patches. The commuting must be</span>
<a name="line-407"></a> <span class='hs-comment'>-- done in this order to make the contexts match up (@iy@ and @y@ are made</span>
<a name="line-408"></a> <span class='hs-comment'>-- in the context before @yy@ have their effect, so we need to commute past</span>
<a name="line-409"></a> <span class='hs-comment'>-- the effect of @yy@ first).</span>
<a name="line-410"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-411"></a> <span class='hs-varid'>iyy'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>yy</span><span class='hs-layout'>)</span>
<a name="line-412"></a> <span class='hs-varid'>y'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x'</span> <span class='hs-varop'>>*</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy</span><span class='hs-layout'>)</span>
<a name="line-413"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy'</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>iyy'</span><span class='hs-layout'>)</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-414"></a>
<a name="line-415"></a> <span class='hs-comment'>-- Handle via the previous case, using the inverting commuter.</span>
<a name="line-416"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommuteNC</span> <span class='hs-varid'>c</span>
<a name="line-417"></a>
<a name="line-418"></a> <span class='hs-comment'>-- Commuting a Conflictor past a Normal patch is the dual operation to</span>
<a name="line-419"></a> <span class='hs-comment'>-- commuting a Normal patch past a Conflictor.</span>
<a name="line-420"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-421"></a> <span class='hs-varid'>y'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varop'>*></span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy</span><span class='hs-layout'>)</span>
<a name="line-422"></a> <span class='hs-varid'>x'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>iyy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertFL</span> <span class='hs-varid'>yy</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-423"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy'</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertRL</span> <span class='hs-varid'>iyy'</span><span class='hs-layout'>)</span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span>
<a name="line-424"></a>
<a name="line-425"></a> <span class='hs-comment'>-- Handle via the previous case, using the inverting commuter.</span>
<a name="line-426"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommuteNC</span> <span class='hs-varid'>c</span>
<a name="line-427"></a>
<a name="line-428"></a> <span class='hs-comment'>-- Commuting two Conflictors, c1 and c2, first commutes the Conflictors'</span>
<a name="line-429"></a> <span class='hs-comment'>-- effects, then commutes the effect of c1 and c2 and the other's</span>
<a name="line-430"></a> <span class='hs-comment'>-- already-undone, and conflicting patch, to bring the already-undone and</span>
<a name="line-431"></a> <span class='hs-comment'>-- conflicting patch into the context of the commuted effects.</span>
<a name="line-432"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-433"></a> <span class='hs-varid'>xx'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>yy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>yy</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xx</span><span class='hs-layout'>)</span>
<a name="line-434"></a> <span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>yy</span> <span class='hs-varop'>>>*</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-435"></a> <span class='hs-varid'>y'</span><span class='hs-conop'>:</span><span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varop'>*>></span> <span class='hs-varid'>xx'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>iy</span><span class='hs-layout'>)</span>
<a name="line-436"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-437"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-varid'>iy</span>
<a name="line-438"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy'</span> <span class='hs-varid'>yy'</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>ix'</span> <span class='hs-varid'>xx'</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-439"></a>
<a name="line-440"></a> <span class='hs-comment'>-- Handle via the previous case, using the inverting commuter.</span>
<a name="line-441"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-442"></a> <span class='hs-varid'>invertCommuteNC</span> <span class='hs-varid'>c</span>
<a name="line-443"></a>
<a name="line-444"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-445"></a> <span class='hs-varid'>iyy'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xx'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>xx</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>yy</span><span class='hs-layout'>)</span>
<a name="line-446"></a> <span class='hs-varid'>y'</span><span class='hs-conop'>:</span><span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>xx'</span> <span class='hs-varop'>>>*</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>iy</span><span class='hs-layout'>)</span>
<a name="line-447"></a> <span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertFL</span> <span class='hs-varid'>iyy'</span> <span class='hs-varop'>>>*</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-448"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-449"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-varid'>iy'</span>
<a name="line-450"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy'</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>iyy'</span><span class='hs-layout'>)</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>ix'</span> <span class='hs-varid'>xx'</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-451"></a>
<a name="line-452"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy'</span> <span class='hs-varid'>yy'</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>ix'</span> <span class='hs-varid'>xx'</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-453"></a> <span class='hs-varid'>xx</span> <span class='hs-conop'>:></span> <span class='hs-varid'>iyy</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>yy'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xx'</span><span class='hs-layout'>)</span>
<a name="line-454"></a> <span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>iy</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varop'>*>></span> <span class='hs-varid'>xx'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span><span class='hs-conop'>:</span><span class='hs-varid'>iy'</span><span class='hs-layout'>)</span>
<a name="line-455"></a> <span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>ix</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varop'>*>></span> <span class='hs-varid'>yy'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-456"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-conop'>:</span><span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-457"></a> <span class='hs-conid'>False</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-varid'>iy'</span>
<a name="line-458"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>iyy</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-459"></a>
<a name="line-460"></a><a name="instance%20Check%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Check</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-461"></a> <span class='hs-varid'>isInconsistent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isConsistent</span>
<a name="line-462"></a>
<a name="line-463"></a><a name="instance%20FromPrim%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>FromPrim</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-464"></a> <span class='hs-varid'>fromPrim</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prim2real</span>
<a name="line-465"></a>
<a name="line-466"></a><a name="instance%20ToFromPrim%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToFromPrim</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-467"></a> <span class='hs-varid'>toPrim</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>p</span>
<a name="line-468"></a> <span class='hs-varid'>toPrim</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-469"></a>
<a name="line-470"></a><a name="instance%20MyEq%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>MyEq</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-471"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>=\/=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IsEq</span>
<a name="line-472"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>=\/=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IsEq</span>
<a name="line-473"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>=\/=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>y</span>
<a name="line-474"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>cx</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>=\/=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>cy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-475"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>map</span> <span class='hs-varid'>commuteOrAddIXX</span> <span class='hs-varid'>cx</span> <span class='hs-varop'>`eqSet`</span> <span class='hs-varid'>map</span> <span class='hs-varid'>commuteOrAddIYY</span> <span class='hs-varid'>cy</span>
<a name="line-476"></a> <span class='hs-varop'>&&</span> <span class='hs-varid'>commuteOrAddIXX</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>commuteOrAddIYY</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx</span> <span class='hs-varop'>=/\=</span> <span class='hs-varid'>yy</span>
<a name="line-477"></a> <span class='hs-keyword'>where</span>
<a name="line-478"></a> <span class='hs-varid'>commuteOrAddIXX</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertFL</span> <span class='hs-varid'>xx</span><span class='hs-layout'>)</span>
<a name="line-479"></a> <span class='hs-varid'>commuteOrAddIYY</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertFL</span> <span class='hs-varid'>yy</span><span class='hs-layout'>)</span>
<a name="line-480"></a> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>cx</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>=\/=</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>cy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-481"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>cx</span> <span class='hs-varop'>`eqSet`</span> <span class='hs-varid'>cy</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>yy</span>
<a name="line-482"></a> <span class='hs-keyword'>_</span> <span class='hs-varop'>=\/=</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NotEq</span>
<a name="line-483"></a>
<a name="line-484"></a><a name="eqSet"></a><span class='hs-definition'>eqSet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-485"></a><span class='hs-definition'>eqSet</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-486"></a><span class='hs-definition'>eqSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>remove1</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>eqSet</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span>
<a name="line-487"></a><span class='hs-definition'>eqSet</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-488"></a>
<a name="line-489"></a><a name="remove1"></a><span class='hs-definition'>remove1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-490"></a><span class='hs-definition'>remove1</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>y</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>else</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>remove1</span> <span class='hs-varid'>x</span> <span class='hs-varid'>ys</span>
<a name="line-491"></a><span class='hs-definition'>remove1</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-492"></a>
<a name="line-493"></a><a name="minus"></a><span class='hs-definition'>minus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-494"></a><span class='hs-definition'>minus</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>xs</span>
<a name="line-495"></a><span class='hs-definition'>minus</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>xs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>remove1</span> <span class='hs-varid'>y</span> <span class='hs-varid'>xs</span>
<a name="line-496"></a> <span class='hs-varid'>xs'</span> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>ys</span>
<a name="line-497"></a>
<a name="line-498"></a><a name="invertNon"></a><span class='hs-definition'>invertNon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-499"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-500"></a><span class='hs-definition'>invertNon</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-501"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>rc'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>removeRL</span> <span class='hs-varid'>nix</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varid'>rc'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-502"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commuteOrAddToCtxRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>non</span> <span class='hs-varid'>nix</span>
<a name="line-503"></a> <span class='hs-keyword'>where</span>
<a name="line-504"></a> <span class='hs-varid'>nix</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Normal</span> <span class='hs-varop'>$</span> <span class='hs-varid'>invert</span> <span class='hs-varid'>x</span>
<a name="line-505"></a>
<a name="line-506"></a><a name="nonTouches"></a><span class='hs-definition'>nonTouches</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchInspect</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span>
<a name="line-507"></a><span class='hs-definition'>nonTouches</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>fromPrim</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span>
<a name="line-508"></a>
<a name="line-509"></a><a name="nonHunkMatches"></a><span class='hs-definition'>nonHunkMatches</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchInspect</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span>
<a name="line-510"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>Bool</span>
<a name="line-511"></a><span class='hs-definition'>nonHunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>||</span> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-512"></a>
<a name="line-513"></a><a name="toNons"></a><span class='hs-definition'>toNons</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>p</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-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflict</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span>
<a name="line-514"></a> <span class='hs-conid'>ToFromPrim</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nonable</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ShowPatchBasic</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrimOf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</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-515"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-varid'>p</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>
<a name="line-516"></a><span class='hs-definition'>toNons</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>lastNon</span> <span class='hs-varop'>$</span> <span class='hs-varid'>initsFL</span> <span class='hs-varid'>xs</span>
<a name="line-517"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>lastNon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-518"></a> <span class='hs-varid'>lastNon</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>xxx</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-519"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>lastNon_aux</span> <span class='hs-varid'>xxx</span> <span class='hs-keyword'>of</span>
<a name="line-520"></a> <span class='hs-varid'>deps</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-521"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>non</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-522"></a> <span class='hs-conid'>Non</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>pp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varid'>deps</span><span class='hs-layout'>)</span> <span class='hs-varid'>pp</span>
<a name="line-523"></a> <span class='hs-conid'>Non</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>pp</span> <span class='hs-keyglyph'>-></span>
<a name="line-524"></a> <span class='hs-varid'>errorDoc</span> <span class='hs-varop'>$</span> <span class='hs-varid'>redText</span> <span class='hs-str'>"Weird case in toNons"</span> <span class='hs-varop'>$$</span>
<a name="line-525"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"please report this bug!"</span> <span class='hs-varop'>$$</span>
<a name="line-526"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>case</span> <span class='hs-varid'>xxx</span> <span class='hs-keyword'>of</span>
<a name="line-527"></a> <span class='hs-varid'>z</span> <span class='hs-conop'>:></span> <span class='hs-varid'>zs</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-varid'>z</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>zs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$$</span>
<a name="line-528"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"ds are"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>ds</span> <span class='hs-varop'>$$</span>
<a name="line-529"></a> <span class='hs-varid'>redText</span> <span class='hs-str'>"pp is"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>pp</span>
<a name="line-530"></a>
<a name="line-531"></a> <span class='hs-varid'>reverseFoo</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-532"></a> <span class='hs-varid'>reverseFoo</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-varid'>rf</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>p</span> <span class='hs-varid'>ps</span>
<a name="line-533"></a> <span class='hs-keyword'>where</span>
<a name="line-534"></a> <span class='hs-varid'>rf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</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-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-535"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-536"></a> <span class='hs-varid'>rf</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>l</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>l</span>
<a name="line-537"></a> <span class='hs-varid'>rf</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rf</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span> <span class='hs-varid'>ys</span>
<a name="line-538"></a>
<a name="line-539"></a> <span class='hs-varid'>lastNon_aux</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-540"></a> <span class='hs-varid'>lastNon_aux</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commuteWhatWeCanRL</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverseFoo</span>
<a name="line-541"></a>
<a name="line-542"></a><a name="initsFL"></a><span class='hs-definition'>initsFL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</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-keyglyph'>[</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-543"></a><span class='hs-definition'>initsFL</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-544"></a><span class='hs-definition'>initsFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-545"></a> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span>
<a name="line-546"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>initsFL</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-547"></a>
<a name="line-548"></a><a name="filterConflictsFL"></a><span class='hs-definition'>filterConflictsFL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-549"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</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-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-550"></a><span class='hs-definition'>filterConflictsFL</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilFL</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilFL</span>
<a name="line-551"></a><span class='hs-definition'>filterConflictsFL</span> <span class='hs-varid'>n</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>
<a name="line-552"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>n'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteOrRemFromCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromPrim</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span>
<a name="line-553"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>filterConflictsFL</span> <span class='hs-varid'>n'</span> <span class='hs-varid'>ps</span> <span class='hs-keyword'>of</span>
<a name="line-554"></a> <span class='hs-varid'>p1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>p1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p2</span>
<a name="line-555"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteWhatWeCanFL</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-keyword'>of</span>
<a name="line-556"></a> <span class='hs-varid'>p1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'>-></span>
<a name="line-557"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>filterConflictsFL</span> <span class='hs-varid'>n</span> <span class='hs-varid'>p1</span> <span class='hs-keyword'>of</span>
<a name="line-558"></a> <span class='hs-varid'>p1a</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p1b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p1a</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p1b</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>p2</span>
<a name="line-559"></a>
<a name="line-560"></a><a name="instance%20Invert%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Invert</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-561"></a> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>d</span>
<a name="line-562"></a> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span>
<a name="line-563"></a> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Normal</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-564"></a> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span>
<a name="line-565"></a> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span>
<a name="line-566"></a>
<a name="line-567"></a><a name="instance%20Commute%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Commute</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-568"></a> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span>
<a name="line-569"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-570"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-571"></a>
<a name="line-572"></a> <span class='hs-comment'>-- These patches conflicted, since we failed to commuteNoConflicts in the</span>
<a name="line-573"></a> <span class='hs-comment'>-- case above.</span>
<a name="line-574"></a> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varid'>n1'x</span> <span class='hs-varid'>p1'</span><span class='hs-layout'>)</span>
<a name="line-575"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>rn1'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>removeRL</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>n1'x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-576"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>p2</span> <span class='hs-conop'>:</span> <span class='hs-varid'>n1nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>$</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>rn1'</span><span class='hs-layout'>)</span>
<a name="line-577"></a> <span class='hs-varid'>a2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p1'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varop'>++</span> <span class='hs-varid'>n1nons</span>
<a name="line-578"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>a1'nop2</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>rn1'</span><span class='hs-layout'>,</span> <span class='hs-varid'>p1'</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-579"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>,</span> <span class='hs-conid'>Non</span> <span class='hs-varid'>c</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span>
<a name="line-580"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-581"></a> <span class='hs-layout'>(</span><span class='hs-varid'>a1</span><span class='hs-layout'>,</span> <span class='hs-varid'>n1</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-582"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a1</span> <span class='hs-varid'>n1</span> <span class='hs-varid'>p1'</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a2</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-583"></a>
<a name="line-584"></a> <span class='hs-comment'>-- Handle using the inverting commuter, and the previous case. N.b. this</span>
<a name="line-585"></a> <span class='hs-comment'>-- is innefficient, since we'll have to also try commuteNoConflicts again</span>
<a name="line-586"></a> <span class='hs-comment'>-- (which we know will fail, since we got here).</span>
<a name="line-587"></a> <span class='hs-varid'>commute</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Normal</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommute</span> <span class='hs-varid'>c</span>
<a name="line-588"></a>
<a name="line-589"></a> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a1</span> <span class='hs-varid'>n1</span> <span class='hs-varid'>p1</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a2</span> <span class='hs-varid'>n2</span> <span class='hs-varid'>p2</span><span class='hs-layout'>)</span>
<a name="line-590"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>a2_minus_p1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>remove1</span> <span class='hs-varid'>p1'</span> <span class='hs-varid'>a2</span>
<a name="line-591"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>not</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span> <span class='hs-varop'>`dependsUpon`</span> <span class='hs-varid'>p1'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-592"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>n1nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-varid'>n2</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>a1</span> <span class='hs-varid'>n1</span>
<a name="line-593"></a> <span class='hs-varid'>n2nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>a2</span> <span class='hs-varid'>n2</span>
<a name="line-594"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a2_minus_p1n1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a2_minus_p1</span> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>n1nons</span>
<a name="line-595"></a> <span class='hs-varid'>n2n1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n2</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>n1</span>
<a name="line-596"></a> <span class='hs-varid'>a1'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-varid'>n2</span><span class='hs-layout'>)</span> <span class='hs-varid'>a1</span>
<a name="line-597"></a> <span class='hs-varid'>p2ooo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>remNons</span> <span class='hs-varid'>a1'</span> <span class='hs-varid'>p2</span>
<a name="line-598"></a> <span class='hs-varid'>n1'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>n2'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filterConflictsFL</span> <span class='hs-varid'>p2ooo</span> <span class='hs-varid'>n2n1</span>
<a name="line-599"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>n1'n2'nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>a2_minus_p1n1</span> <span class='hs-layout'>(</span><span class='hs-varid'>n1'</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>n2'</span><span class='hs-layout'>)</span>
<a name="line-600"></a> <span class='hs-varid'>n1'nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>take</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthFL</span> <span class='hs-varid'>n1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>n1'n2'nons</span>
<a name="line-601"></a> <span class='hs-varid'>n2'nons</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drop</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthFL</span> <span class='hs-varid'>n1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>n1'n2'nons</span>
<a name="line-602"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a2</span> <span class='hs-varop'>++</span> <span class='hs-varid'>n2nons</span><span class='hs-layout'>)</span> <span class='hs-varop'>`minus`</span> <span class='hs-layout'>(</span><span class='hs-varid'>p1'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>n1'nons</span><span class='hs-layout'>)</span>
<a name="line-603"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a2'o</span> <span class='hs-keyglyph'>=</span>
<a name="line-604"></a> <span class='hs-varid'>fst</span> <span class='hs-layout'>(</span><span class='hs-varid'>allConflictsWith</span> <span class='hs-varid'>p2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>a2_minus_p1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>n2nons</span><span class='hs-layout'>)</span>
<a name="line-605"></a> <span class='hs-varop'>`minus`</span> <span class='hs-varid'>n2'nons</span>
<a name="line-606"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>a2'</span> <span class='hs-keyglyph'>=</span>
<a name="line-607"></a> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrRemFromCtxFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xx2patches</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varid'>n1'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a2'o</span>
<a name="line-608"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>p2'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commuteOrRemFromCtxFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xx2patches</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varid'>n1'</span><span class='hs-layout'>)</span> <span class='hs-varid'>p2</span>
<a name="line-609"></a> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>a2'</span><span class='hs-layout'>,</span> <span class='hs-varid'>n2'</span><span class='hs-layout'>,</span> <span class='hs-varid'>p2'</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-610"></a> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>,</span> <span class='hs-conid'>Non</span> <span class='hs-varid'>c</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-611"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>joinEffects</span> <span class='hs-varid'>c</span> <span class='hs-keyword'>of</span>
<a name="line-612"></a> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>n1'x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n1'</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyword'>in</span>
<a name="line-613"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a1'nop2</span> <span class='hs-varid'>n1'x</span> <span class='hs-varid'>p1'</span><span class='hs-layout'>)</span>
<a name="line-614"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>impossible</span>
<a name="line-615"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>c2</span><span class='hs-layout'>)</span>
<a name="line-616"></a> <span class='hs-keyword'>where</span>
<a name="line-617"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>a2'</span> <span class='hs-varid'>n2'</span> <span class='hs-varid'>p2'</span>
<a name="line-618"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span> <span class='hs-conop'>:</span> <span class='hs-varid'>a1'nop2</span><span class='hs-layout'>)</span> <span class='hs-varid'>n1'</span> <span class='hs-varid'>p1'</span>
<a name="line-619"></a>
<a name="line-620"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>rpn2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>geteff</span> <span class='hs-varid'>a2</span> <span class='hs-varid'>n2</span>
<a name="line-621"></a> <span class='hs-varid'>p1'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commuteOrAddToCtxRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>rpn2</span><span class='hs-layout'>)</span> <span class='hs-varid'>p1</span>
<a name="line-622"></a>
<a name="line-623"></a> <span class='hs-comment'>-- Handle using the inverting commuter, and the previous case. This is also</span>
<a name="line-624"></a> <span class='hs-comment'>-- innefficient, since we'll have to also try commuteNoConflicts again</span>
<a name="line-625"></a> <span class='hs-comment'>-- (which we know will fail, since we got here).</span>
<a name="line-626"></a> <span class='hs-varid'>commute</span> <span class='hs-varid'>c</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertCommute</span> <span class='hs-varid'>c</span>
<a name="line-627"></a>
<a name="line-628"></a> <span class='hs-varid'>commute</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-629"></a>
<a name="line-630"></a><a name="instance%20Merge%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-631"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-632"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-633"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-634"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-635"></a>
<a name="line-636"></a>
<a name="line-637"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>b</span> <span class='hs-conop'>:/\:</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>a</span>
<a name="line-638"></a> <span class='hs-comment'>-- We had a FIXME comment on this case, why?</span>
<a name="line-639"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-640"></a> <span class='hs-varid'>b</span> <span class='hs-conop'>:/\:</span> <span class='hs-conid'>Duplicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-641"></a>
<a name="line-642"></a> <span class='hs-comment'>-- Handle using the swap merge and the previous case.</span>
<a name="line-643"></a> <span class='hs-varid'>merge</span> <span class='hs-varid'>m</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>swapMerge</span> <span class='hs-varid'>m</span>
<a name="line-644"></a>
<a name="line-645"></a> <span class='hs-comment'>-- When merging x and y, we do a bunch of what look like "consistency"</span>
<a name="line-646"></a> <span class='hs-comment'>-- check merges. If the resulting y'' and y are equal, then we succeed.</span>
<a name="line-647"></a> <span class='hs-comment'>-- If the first case fails, we check for equal patches (which wouldn't</span>
<a name="line-648"></a> <span class='hs-comment'>-- commute) and return a Duplicate on both sides of the merge, in that</span>
<a name="line-649"></a> <span class='hs-comment'>-- case.</span>
<a name="line-650"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-651"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ix'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span>
<a name="line-652"></a> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-653"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>y''</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y'</span><span class='hs-layout'>)</span>
<a name="line-654"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>y''</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span>
<a name="line-655"></a> <span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:/\:</span> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-varid'>assertConsistent</span> <span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-656"></a> <span class='hs-comment'>-- If we detect equal patches, we have a duplicate.</span>
<a name="line-657"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>x</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>y</span>
<a name="line-658"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>non</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span>
<a name="line-659"></a> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>n</span> <span class='hs-conop'>:/\:</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>n</span>
<a name="line-660"></a>
<a name="line-661"></a> <span class='hs-comment'>-- We know that these two patches conflict, and aren't Duplicates, since we</span>
<a name="line-662"></a> <span class='hs-comment'>-- failed the previous case. We therefore create basic Conflictors, which</span>
<a name="line-663"></a> <span class='hs-comment'>-- undo the other patch.</span>
<a name="line-664"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-varid'>nx</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>ny</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cy</span> <span class='hs-conop'>:/\:</span> <span class='hs-varid'>cx</span>
<a name="line-665"></a> <span class='hs-keyword'>where</span>
<a name="line-666"></a> <span class='hs-varid'>cy</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>non</span> <span class='hs-varid'>ny</span><span class='hs-layout'>)</span>
<a name="line-667"></a> <span class='hs-varid'>cx</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>non</span> <span class='hs-varid'>nx</span><span class='hs-layout'>)</span>
<a name="line-668"></a>
<a name="line-669"></a> <span class='hs-comment'>-- If a Normal patch @x@ and a Conflictor @cy@ conflict, we add @x@ to the</span>
<a name="line-670"></a> <span class='hs-comment'>-- effect of @cy@ on one side, and create a Conflictor that has no effect,</span>
<a name="line-671"></a> <span class='hs-comment'>-- but has the already-undone and conflicted patch of @cy@ and some foos as</span>
<a name="line-672"></a> <span class='hs-comment'>-- the already-undone on the other side.</span>
<a name="line-673"></a> <span class='hs-comment'>--</span>
<a name="line-674"></a> <span class='hs-comment'>-- TODO: what is foo?</span>
<a name="line-675"></a> <span class='hs-comment'>-- Why do we need nyy? I think @x'@ is @x@ in the context of @yy@.</span>
<a name="line-676"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-677"></a> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yyx</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:/\:</span> <span class='hs-conid'>Conflictor</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nyy</span><span class='hs-layout'>)</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>x'</span>
<a name="line-678"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>yyx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>yy</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span>
<a name="line-679"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>nyy</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>$</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yyx</span>
<a name="line-680"></a>
<a name="line-681"></a> <span class='hs-comment'>-- Handle using the swap merge and the previous case.</span>
<a name="line-682"></a> <span class='hs-varid'>merge</span> <span class='hs-varid'>m</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Normal</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>swapMerge</span> <span class='hs-varid'>m</span>
<a name="line-683"></a>
<a name="line-684"></a> <span class='hs-comment'>-- mH see also cH</span>
<a name="line-685"></a> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>iy</span> <span class='hs-varid'>yy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-686"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommonRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>xx</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>yy</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-687"></a> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>rxx1</span> <span class='hs-varid'>ryy1</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span>
<a name="line-688"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>ryy1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invertRL</span> <span class='hs-varid'>rxx1</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-689"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>ixx'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ryy'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-690"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>xx'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invert</span> <span class='hs-varid'>ixx'</span>
<a name="line-691"></a> <span class='hs-varid'>yy'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>ryy'</span>
<a name="line-692"></a> <span class='hs-varid'>y'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy'</span> <span class='hs-keyglyph'>=</span>
<a name="line-693"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-varid'>xx'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:</span> <span class='hs-varid'>iy</span><span class='hs-layout'>)</span>
<a name="line-694"></a> <span class='hs-varid'>x'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ix'</span> <span class='hs-keyglyph'>=</span>
<a name="line-695"></a> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-varid'>ryy'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-696"></a> <span class='hs-varid'>nyy'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>iy'</span> <span class='hs-varid'>yy'</span>
<a name="line-697"></a> <span class='hs-varid'>nxx'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>ix'</span> <span class='hs-varid'>xx'</span>
<a name="line-698"></a> <span class='hs-varid'>icx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drop</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthRL</span> <span class='hs-varid'>rxx1</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-699"></a> <span class='hs-varid'>xx2nons</span> <span class='hs-varid'>ix</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>rxx1</span><span class='hs-layout'>)</span>
<a name="line-700"></a> <span class='hs-varid'>ic'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-varid'>ryy'</span><span class='hs-layout'>)</span> <span class='hs-varid'>icx</span>
<a name="line-701"></a> <span class='hs-comment'>-- +++ is a more efficient version of nub (iy' ++</span>
<a name="line-702"></a> <span class='hs-comment'>-- ix') given that we know each element shows up</span>
<a name="line-703"></a> <span class='hs-comment'>-- only once in either list.</span>
<a name="line-704"></a> <span class='hs-varid'>ixy'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ic'</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-varid'>iy'</span> <span class='hs-varop'>+++</span> <span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-705"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ixy'</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nxx'</span><span class='hs-layout'>)</span> <span class='hs-varid'>yy'</span> <span class='hs-varid'>y'</span>
<a name="line-706"></a> <span class='hs-varid'>c2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Conflictor</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ixy'</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nyy'</span><span class='hs-layout'>)</span> <span class='hs-varid'>xx'</span> <span class='hs-varid'>x'</span> <span class='hs-keyword'>in</span>
<a name="line-707"></a> <span class='hs-varid'>c1</span> <span class='hs-conop'>:/\:</span> <span class='hs-varid'>c2</span>
<a name="line-708"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>impossible</span>
<a name="line-709"></a>
<a name="line-710"></a><a name="instance%20PatchInspect%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PatchInspect</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInspect</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-711"></a> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>p</span>
<a name="line-712"></a> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>p</span>
<a name="line-713"></a> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-varid'>p</span>
<a name="line-714"></a> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-715"></a> <span class='hs-varid'>nubsort</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-varid'>c</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>p</span>
<a name="line-716"></a> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-717"></a> <span class='hs-varid'>nubsort</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-varid'>listTouchedFiles</span> <span class='hs-varid'>c</span> <span class='hs-varop'>++</span> <span class='hs-varid'>nonTouches</span> <span class='hs-varid'>p</span>
<a name="line-718"></a>
<a name="line-719"></a> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-720"></a> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-721"></a> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-722"></a> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-723"></a> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varop'>||</span> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>||</span> <span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-724"></a> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>x</span> <span class='hs-varid'>c</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-725"></a> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-varop'>||</span> <span class='hs-varid'>hunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>||</span> <span class='hs-varid'>nonHunkMatches</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-726"></a>
<a name="line-727"></a><a name="allConflictsWith"></a><span class='hs-definition'>allConflictsWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-728"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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>
<a name="line-729"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-730"></a><span class='hs-definition'>allConflictsWith</span> <span class='hs-varid'>x</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>acw</span> <span class='hs-varop'>$</span> <span class='hs-varid'>partition</span> <span class='hs-layout'>(</span><span class='hs-varid'>conflictsWith</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span>
<a name="line-731"></a> <span class='hs-keyword'>where</span>
<a name="line-732"></a> <span class='hs-varid'>acw</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>[]</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc</span><span class='hs-layout'>)</span>
<a name="line-733"></a> <span class='hs-varid'>acw</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>allConflictsWith</span> <span class='hs-varid'>c</span> <span class='hs-varid'>nc</span> <span class='hs-keyword'>of</span>
<a name="line-734"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c1</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>acw</span> <span class='hs-layout'>(</span><span class='hs-varid'>cs</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc1</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-735"></a> <span class='hs-layout'>(</span><span class='hs-varid'>xs'</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span> <span class='hs-conop'>:</span> <span class='hs-varid'>c1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>xs'</span><span class='hs-layout'>,</span> <span class='hs-varid'>nc'</span><span class='hs-layout'>)</span>
<a name="line-736"></a>
<a name="line-737"></a><a name="conflictsWith"></a><span class='hs-definition'>conflictsWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-738"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>Bool</span>
<a name="line-739"></a><span class='hs-definition'>conflictsWith</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>`dependsUpon`</span> <span class='hs-varid'>y</span> <span class='hs-varop'>||</span> <span class='hs-varid'>y</span> <span class='hs-varop'>`dependsUpon`</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-740"></a><span class='hs-definition'>conflictsWith</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>cy</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-741"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteOrRemFromCtxFL</span> <span class='hs-varid'>cy</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-742"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>cx'</span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-743"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>iy</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromPrim</span> <span class='hs-varop'>$</span> <span class='hs-varid'>invert</span> <span class='hs-varid'>y</span> <span class='hs-keyword'>in</span>
<a name="line-744"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteFLorComplain</span> <span class='hs-layout'>(</span><span class='hs-varid'>iy</span> <span class='hs-conop'>:></span> <span class='hs-varid'>cx'</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>fromPrim</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-745"></a> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-746"></a> <span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-747"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-748"></a>
<a name="line-749"></a><a name="dependsUpon"></a><span class='hs-definition'>dependsUpon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-750"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Non</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-conid'>Bool</span>
<a name="line-751"></a><span class='hs-definition'>dependsUpon</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Non</span> <span class='hs-varid'>ys</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-752"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>removeSubsequenceFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>fromPrim</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-753"></a> <span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-754"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-755"></a>
<a name="line-756"></a><a name="+++"></a><span class='hs-layout'>(</span><span class='hs-varop'>+++</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-757"></a><span class='hs-conid'>[]</span> <span class='hs-varop'>+++</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-758"></a><a name="x"></a><span class='hs-definition'>x</span> <span class='hs-varop'>+++</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-759"></a><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varop'>+++</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>remove1</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-varop'>+++</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span>
<a name="line-760"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-conop'>:</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-varop'>+++</span> <span class='hs-varid'>xys</span><span class='hs-layout'>)</span>
<a name="line-761"></a>
<a name="line-762"></a><a name="swapMerge"></a><span class='hs-definition'>swapMerge</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-763"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:/\:</span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-764"></a><span class='hs-definition'>swapMerge</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>merge</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:/\:</span> <span class='hs-varid'>y'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>y'</span> <span class='hs-conop'>:/\:</span> <span class='hs-varid'>x'</span>
<a name="line-765"></a>
<a name="line-766"></a><a name="invertCommute"></a><span class='hs-definition'>invertCommute</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-767"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-768"></a><span class='hs-definition'>invertCommute</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ix'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-769"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>iy'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-770"></a>
<a name="line-771"></a><a name="invertCommuteNC"></a><span class='hs-definition'>invertCommuteNC</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-772"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</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-layout'>)</span>
<a name="line-773"></a><span class='hs-definition'>invertCommuteNC</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-774"></a> <span class='hs-varid'>ix'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>iy'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>y</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-775"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>iy'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>invert</span> <span class='hs-varid'>ix'</span><span class='hs-layout'>)</span>
<a name="line-776"></a>
<a name="line-777"></a><a name="pullCommon"></a><span class='hs-comment'>-- | 'pullCommon' @xs ys@ returns the set of patches that can be commuted out</span>
<a name="line-778"></a><span class='hs-comment'>-- of both @xs@ and @ys@ along with the remnants of both lists</span>
<a name="line-779"></a><span class='hs-definition'>pullCommon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Common</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-780"></a><span class='hs-definition'>pullCommon</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Common</span> <span class='hs-conid'>NilFL</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>ys</span>
<a name="line-781"></a><span class='hs-definition'>pullCommon</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Common</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>NilFL</span>
<a name="line-782"></a><span class='hs-definition'>pullCommon</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>removeFL</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>=</span>
<a name="line-783"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommon</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-784"></a> <span class='hs-conid'>Common</span> <span class='hs-varid'>c</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ys'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Common</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ys'</span>
<a name="line-785"></a><span class='hs-definition'>pullCommon</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span>
<a name="line-786"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteWhatWeCanFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-787"></a> <span class='hs-varid'>xs1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs2</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommon</span> <span class='hs-varid'>xs1</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-788"></a> <span class='hs-conid'>Common</span> <span class='hs-varid'>c</span> <span class='hs-varid'>xs1'</span> <span class='hs-varid'>ys'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Common</span> <span class='hs-varid'>c</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs1'</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>xs2</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys'</span>
<a name="line-789"></a>
<a name="line-790"></a><a name="RL"></a><span class='hs-comment'>-- | 'Common' @cs xs ys@ represents two sequences of patches that have @cs@ in</span>
<a name="line-791"></a><a name="RL"></a><span class='hs-comment'>-- common, in other words @cs +>+ xs@ and @cs +>+ ys@</span>
<a name="line-792"></a><a name="RL"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Common</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-793"></a> <span class='hs-conid'>Common</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Common</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>o</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-794"></a>
<a name="line-795"></a><a name="pullCommonRL"></a><span class='hs-comment'>-- | 'pullCommonRL' @xs ys@ returns the set of patches that can be commuted</span>
<a name="line-796"></a><span class='hs-comment'>-- out of both @xs@ and @ys@ along with the remnants of both lists</span>
<a name="line-797"></a><span class='hs-definition'>pullCommonRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>p</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-varid'>o</span><span class='hs-layout'>)</span>
<a name="line-798"></a><span class='hs-definition'>pullCommonRL</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CommonRL</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ys</span> <span class='hs-conid'>NilRL</span>
<a name="line-799"></a><span class='hs-definition'>pullCommonRL</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>xs</span> <span class='hs-conid'>NilRL</span> <span class='hs-conid'>NilRL</span>
<a name="line-800"></a><span class='hs-definition'>pullCommonRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>removeRL</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xys</span> <span class='hs-keyglyph'>=</span>
<a name="line-801"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommonRL</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-802"></a> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ys'</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ys'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-803"></a><span class='hs-definition'>pullCommonRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span>
<a name="line-804"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteWhatWeCanRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-805"></a> <span class='hs-varid'>xs1</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs2</span> <span class='hs-keyglyph'>-></span>
<a name="line-806"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pullCommonRL</span> <span class='hs-varid'>xs2</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-807"></a> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>xs2'</span> <span class='hs-varid'>ys'</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CommonRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs2'</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>xs1</span><span class='hs-layout'>)</span> <span class='hs-varid'>ys'</span> <span class='hs-varid'>c</span>
<a name="line-808"></a>
<a name="line-809"></a><a name="Apply"></a><span class='hs-comment'>-- | 'CommonRL' @xs ys cs@' represents two sequences of patches that have @cs@</span>
<a name="line-810"></a><a name="Apply"></a><span class='hs-comment'>-- in common, in other words @xs +<+ cs@ and @ys +<+ cs@</span>
<a name="line-811"></a><a name="Apply"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>p</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-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-812"></a> <span class='hs-conid'>CommonRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CommonRL</span> <span class='hs-varid'>p</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-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-813"></a>
<a name="line-814"></a><a name="instance%20Apply%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Apply</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-815"></a> <span class='hs-keyword'>type</span> <span class='hs-conid'>ApplyState</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ApplyState</span> <span class='hs-varid'>prim</span>
<a name="line-816"></a> <span class='hs-varid'>apply</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-varid'>effect</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-817"></a>
<a name="line-818"></a><a name="instance%20RepairToFL%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RepairToFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-819"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-820"></a> <span class='hs-varid'>mapMaybeSnd</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapFL_FL</span> <span class='hs-conid'>Normal</span><span class='hs-layout'>)</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-varid'>p</span>
<a name="line-821"></a> <span class='hs-varid'>applyAndTryToFixFL</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>apply</span> <span class='hs-varid'>x</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-822"></a>
<a name="line-823"></a><a name="instance%20PatchListFormat%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-824"></a> <span class='hs-comment'>-- In principle we could use ListFormatDefault when prim /= V1 Prim patches,</span>
<a name="line-825"></a> <span class='hs-comment'>-- as those are the only case where we need to support a legacy on-disk</span>
<a name="line-826"></a> <span class='hs-comment'>-- format. In practice we don't expect RealPatch to be used with any other</span>
<a name="line-827"></a> <span class='hs-comment'>-- argument anyway, so it doesn't matter.</span>
<a name="line-828"></a> <span class='hs-varid'>patchListFormat</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ListFormatV2</span>
<a name="line-829"></a>
<a name="line-830"></a><a name="duplicate"></a><span class='hs-definition'>duplicate</span><span class='hs-layout'>,</span> <span class='hs-varid'>etacilpud</span><span class='hs-layout'>,</span> <span class='hs-varid'>conflictor</span><span class='hs-layout'>,</span> <span class='hs-varid'>rotcilfnoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-831"></a><span class='hs-definition'>duplicate</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"duplicate"</span>
<a name="line-832"></a><a name="etacilpud"></a><span class='hs-definition'>etacilpud</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"etacilpud"</span>
<a name="line-833"></a><a name="conflictor"></a><span class='hs-definition'>conflictor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"conflictor"</span>
<a name="line-834"></a><a name="rotcilfnoc"></a><span class='hs-definition'>rotcilfnoc</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"rotcilfnoc"</span>
<a name="line-835"></a>
<a name="line-836"></a><a name="instance%20ShowPatchBasic%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ShowPatchBasic</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-837"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>blueText</span> <span class='hs-varid'>duplicate</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showNon</span> <span class='hs-varid'>d</span>
<a name="line-838"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>blueText</span> <span class='hs-varid'>etacilpud</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showNon</span> <span class='hs-varid'>d</span>
<a name="line-839"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showPrim</span> <span class='hs-conid'>NewFormat</span> <span class='hs-varid'>p</span>
<a name="line-840"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>i</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-841"></a> <span class='hs-varid'>blueText</span> <span class='hs-varid'>conflictor</span> <span class='hs-varop'><+></span> <span class='hs-varid'>showNons</span> <span class='hs-varid'>i</span> <span class='hs-varop'><+></span> <span class='hs-varid'>blueText</span> <span class='hs-str'>"[]"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showNon</span> <span class='hs-varid'>p</span>
<a name="line-842"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-varid'>i</span> <span class='hs-varid'>cs</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-843"></a> <span class='hs-varid'>blueText</span> <span class='hs-varid'>conflictor</span> <span class='hs-varop'><+></span> <span class='hs-varid'>showNons</span> <span class='hs-varid'>i</span> <span class='hs-varop'><+></span> <span class='hs-varid'>blueText</span> <span class='hs-str'>"["</span> <span class='hs-varop'>$$</span>
<a name="line-844"></a> <span class='hs-varid'>showPrimFL</span> <span class='hs-conid'>NewFormat</span> <span class='hs-varid'>cs</span> <span class='hs-varop'>$$</span>
<a name="line-845"></a> <span class='hs-varid'>blueText</span> <span class='hs-str'>"]"</span> <span class='hs-varop'>$$</span>
<a name="line-846"></a> <span class='hs-varid'>showNon</span> <span class='hs-varid'>p</span>
<a name="line-847"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>i</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-848"></a> <span class='hs-varid'>blueText</span> <span class='hs-varid'>rotcilfnoc</span> <span class='hs-varop'><+></span> <span class='hs-varid'>showNons</span> <span class='hs-varid'>i</span> <span class='hs-varop'><+></span> <span class='hs-varid'>blueText</span> <span class='hs-str'>"[]"</span> <span class='hs-varop'>$$</span> <span class='hs-varid'>showNon</span> <span class='hs-varid'>p</span>
<a name="line-849"></a> <span class='hs-varid'>showPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>i</span> <span class='hs-varid'>cs</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-850"></a> <span class='hs-varid'>blueText</span> <span class='hs-varid'>rotcilfnoc</span> <span class='hs-varop'><+></span> <span class='hs-varid'>showNons</span> <span class='hs-varid'>i</span> <span class='hs-varop'><+></span> <span class='hs-varid'>blueText</span> <span class='hs-str'>"["</span> <span class='hs-varop'>$$</span>
<a name="line-851"></a> <span class='hs-varid'>showPrimFL</span> <span class='hs-conid'>NewFormat</span> <span class='hs-varid'>cs</span> <span class='hs-varop'>$$</span>
<a name="line-852"></a> <span class='hs-varid'>blueText</span> <span class='hs-str'>"]"</span> <span class='hs-varop'>$$</span>
<a name="line-853"></a> <span class='hs-varid'>showNon</span> <span class='hs-varid'>p</span>
<a name="line-854"></a>
<a name="line-855"></a><a name="instance%20ShowPatch%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ShowPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-856"></a> <span class='hs-varid'>showContextPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showContextPatch</span> <span class='hs-varid'>p</span>
<a name="line-857"></a> <span class='hs-varid'>showContextPatch</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>c</span>
<a name="line-858"></a> <span class='hs-varid'>summary</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>plainSummary</span>
<a name="line-859"></a> <span class='hs-varid'>summaryFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>plainSummary</span>
<a name="line-860"></a> <span class='hs-varid'>thing</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"change"</span>
<a name="line-861"></a>
<a name="line-862"></a><a name="instance%20ReadPatch%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ReadPatch</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-863"></a> <span class='hs-varid'>readPatch'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-864"></a> <span class='hs-varid'>skipSpace</span>
<a name="line-865"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>string</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span>
<a name="line-866"></a> <span class='hs-varid'>readConflictorPs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-867"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readNons</span>
<a name="line-868"></a> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>bracketedFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>readPrim</span> <span class='hs-conid'>NewFormat</span><span class='hs-layout'>)</span> <span class='hs-chr'>'['</span> <span class='hs-chr'>']'</span>
<a name="line-869"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readNon</span>
<a name="line-870"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-871"></a> <span class='hs-varid'>choice</span> <span class='hs-keyglyph'>[</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>str</span> <span class='hs-varid'>duplicate</span>
<a name="line-872"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readNon</span>
<a name="line-873"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Duplicate</span> <span class='hs-varid'>p</span>
<a name="line-874"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>str</span> <span class='hs-varid'>etacilpud</span>
<a name="line-875"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readNon</span>
<a name="line-876"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>p</span>
<a name="line-877"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>str</span> <span class='hs-varid'>conflictor</span>
<a name="line-878"></a> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readConflictorPs</span>
<a name="line-879"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Conflictor</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeCoerceP</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-880"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>str</span> <span class='hs-varid'>rotcilfnoc</span>
<a name="line-881"></a> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readConflictorPs</span>
<a name="line-882"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-conid'>InvConflictor</span> <span class='hs-varid'>i</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>p</span>
<a name="line-883"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readPrim</span> <span class='hs-conid'>NewFormat</span>
<a name="line-884"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Sealed</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span>
<a name="line-885"></a> <span class='hs-keyglyph'>]</span>
<a name="line-886"></a>
<a name="line-887"></a><a name="instance%20Show%20(RealPatch%20prim%20C(x%20y))"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Show</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-888"></a> <span class='hs-varid'>show</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderString</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showPatch</span> <span class='hs-varid'>p</span>
<a name="line-889"></a>
<a name="line-890"></a><a name="instance%20Show2%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Show2</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-891"></a> <span class='hs-varid'>showDict2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ShowDictClass</span>
<a name="line-892"></a>
<a name="line-893"></a><a name="instance%20Nonable%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Nonable</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-894"></a> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span>
<a name="line-895"></a> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertNon</span> <span class='hs-varid'>d</span> <span class='hs-comment'>-- FIXME !!! ???</span>
<a name="line-896"></a> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Non</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>p</span>
<a name="line-897"></a> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>xx</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commutePrimsOrAddToCtx</span> <span class='hs-layout'>(</span><span class='hs-varid'>invertFL</span> <span class='hs-varid'>xx</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span>
<a name="line-898"></a> <span class='hs-varid'>non</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertNon</span> <span class='hs-varid'>n</span>
<a name="line-899"></a>
<a name="line-900"></a><a name="instance%20Effect%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-901"></a> <span class='hs-varid'>effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilFL</span>
<a name="line-902"></a> <span class='hs-varid'>effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilFL</span>
<a name="line-903"></a> <span class='hs-varid'>effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span>
<a name="line-904"></a> <span class='hs-varid'>effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invert</span> <span class='hs-varid'>e</span>
<a name="line-905"></a> <span class='hs-varid'>effect</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span>
<a name="line-906"></a> <span class='hs-varid'>effectRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Duplicate</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilRL</span>
<a name="line-907"></a> <span class='hs-varid'>effectRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Etacilpud</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NilRL</span>
<a name="line-908"></a> <span class='hs-varid'>effectRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:<:</span> <span class='hs-conid'>NilRL</span>
<a name="line-909"></a> <span class='hs-varid'>effectRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Conflictor</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invertFL</span> <span class='hs-varid'>e</span>
<a name="line-910"></a> <span class='hs-varid'>effectRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>InvConflictor</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>e</span>
<a name="line-911"></a>
<a name="line-912"></a><a name="instance%20IsHunk%20(RealPatch%20prim)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IsHunk</span> <span class='hs-varid'>prim</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>IsHunk</span> <span class='hs-layout'>(</span><span class='hs-conid'>RealPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-913"></a> <span class='hs-varid'>isHunk</span> <span class='hs-varid'>rp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-conid'>Normal</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-varid'>rp</span>
<a name="line-914"></a> <span class='hs-varid'>isHunk</span> <span class='hs-varid'>p</span>
</pre></body>
</html>
