<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ --> <title>src/Darcs/Patch/Conflict.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></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'>Conflict</span> <a name="line-2"></a> <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-3"></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-4"></a> <span class='hs-keyword'>where</span> <a name="line-5"></a> <a name="line-6"></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-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Inspect</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> <span class='hs-layout'>)</span> <a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Permutations</span> <span class='hs-conid'>()</span> <a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PrimOf</span> <span class='hs-layout'>)</span> <a name="line-10"></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> <a name="line-11"></a> <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> <a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mapFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseRL</span> <a name="line-13"></a> <span class='hs-layout'>)</span> <a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</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-varid'>unseal</span> <span class='hs-layout'>)</span> <a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>nubsort</span> <span class='hs-layout'>)</span> <a name="line-16"></a> <a name="line-17"></a><span class='hs-cpp'>#include "gadts.h"</span> <a name="line-18"></a> <a name="line-19"></a><a name="Conflict"></a><span class='hs-keyword'>class</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'>PatchInspect</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'>Conflict</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>where</span> <a name="line-20"></a> <span class='hs-varid'>listConflictedFiles</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> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>FilePath</span><span class='hs-keyglyph'>]</span> <a name="line-21"></a> <span class='hs-varid'>listConflictedFiles</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <a name="line-22"></a> <span class='hs-varid'>nubsort</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-varid'>unseal</span> <span class='hs-varid'>listTouchedFiles</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>resolveConflicts</span> <span class='hs-varid'>p</span> <a name="line-23"></a> <span class='hs-varid'>resolveConflicts</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> <span class='hs-keyglyph'>-></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'>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'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <a name="line-24"></a> <a name="line-25"></a> <span class='hs-varid'>conflictedEffect</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> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>IsConflictedPrim</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-keyglyph'>]</span> <a name="line-26"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>listConflictedFiles</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span> <a name="line-27"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mapFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsC</span> <span class='hs-conid'>Okay</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>effect</span> <span class='hs-varid'>x</span> <a name="line-28"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mapFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsC</span> <span class='hs-conid'>Conflicted</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>effect</span> <span class='hs-varid'>x</span> <a name="line-29"></a> <a name="line-30"></a><a name="Conflict"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>where</span> <a name="line-31"></a> <span class='hs-comment'>-- | If 'commuteNoConflicts' @x :> y@ succeeds, we know that that @x@ commutes</span> <a name="line-32"></a> <span class='hs-comment'>-- past @y@ without any conflicts. This function is useful for patch types</span> <a name="line-33"></a> <span class='hs-comment'>-- for which 'commute' is defined to always succeed; so we need some way to</span> <a name="line-34"></a> <span class='hs-comment'>-- pick out the specific cases where commutation succeeds without any conflicts.</span> <a name="line-35"></a> <span class='hs-varid'>commuteNoConflicts</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-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> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</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-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><span class='hs-layout'>)</span> <a name="line-36"></a> <a name="line-37"></a><a name="instance%20Conflict%20(FL%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</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-keyglyph'>=></span> <span class='hs-conid'>Conflict</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-38"></a> <span class='hs-varid'>listConflictedFiles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nubsort</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mapFL</span> <span class='hs-varid'>listConflictedFiles</span> <a name="line-39"></a> <span class='hs-varid'>resolveConflicts</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-40"></a> <span class='hs-varid'>resolveConflicts</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>resolveConflicts</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>x</span> <a name="line-41"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mapFL</span> <span class='hs-varid'>conflictedEffect</span> <a name="line-42"></a> <a name="line-43"></a><a name="instance%20CommuteNoConflicts%20(FL%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-44"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilFL</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</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'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <a name="line-45"></a> <span class='hs-varid'>commuteNoConflicts</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-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilFL</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-46"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</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'>ys'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>rxs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <a name="line-47"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ys'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>rxs'</span> <a name="line-48"></a> <a name="line-49"></a><a name="instance%20Conflict%20(RL%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</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-keyglyph'>=></span> <span class='hs-conid'>Conflict</span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-50"></a> <span class='hs-varid'>listConflictedFiles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nubsort</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>listConflictedFiles</span> <a name="line-51"></a> <span class='hs-varid'>resolveConflicts</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rcs</span> <span class='hs-varid'>x</span> <span class='hs-conid'>NilFL</span> <a name="line-52"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>rcs</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'>y</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'>y</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></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'>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'>w</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <a name="line-53"></a> <span class='hs-varid'>rcs</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-54"></a> <span class='hs-varid'>rcs</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'>passedby</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</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'>resolveConflicts</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <a name="line-55"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>commuteNoConflictsFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:></span><span class='hs-varid'>passedby</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span> <a name="line-56"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:></span> <span class='hs-varid'>p'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>resolveConflicts</span> <span class='hs-varid'>p'</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rcs</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:>:</span><span class='hs-varid'>passedby</span><span class='hs-layout'>)</span> <a name="line-57"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>rcs</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:>:</span><span class='hs-varid'>passedby</span><span class='hs-layout'>)</span> <a name="line-58"></a> <span class='hs-varid'>rcs</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'>passedby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>seq</span> <span class='hs-varid'>passedby</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rcs</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:>:</span><span class='hs-varid'>passedby</span><span class='hs-layout'>)</span> <a name="line-59"></a> <span class='hs-varid'>conflictedEffect</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>conflictedEffect</span> <a name="line-60"></a> <a name="line-61"></a><a name="instance%20CommuteNoConflicts%20(RL%20p)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-62"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilRL</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</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'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <a name="line-63"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilRL</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-conid'>NilRL</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-64"></a> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</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'>ys'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>rxs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <a name="line-65"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>ys'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>rxs'</span> <a name="line-66"></a> <a name="line-67"></a><a name="IsConflictedPrim"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>IsConflictedPrim</span> <span class='hs-varid'>prim</span> <span class='hs-keyword'>where</span> <a name="line-68"></a> <span class='hs-conid'>IsC</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>!</span><span class='hs-conid'>ConflictState</span> <span class='hs-keyglyph'>-></span> <span class='hs-varop'>!</span><span class='hs-layout'>(</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-keyglyph'>-></span> <span class='hs-conid'>IsConflictedPrim</span> <span class='hs-varid'>prim</span> <a name="line-69"></a><a name="ConflictState"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ConflictState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Okay</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Conflicted</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Duplicated</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>)</span> <a name="line-70"></a> <a name="line-71"></a><a name="commuteNoConflictsFL"></a><span class='hs-definition'>commuteNoConflictsFL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</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'>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-layout'>(</span><span class='hs-conid'>FL</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'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-72"></a><span class='hs-definition'>commuteNoConflictsFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <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-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <a name="line-73"></a><span class='hs-definition'>commuteNoConflictsFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>q</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span> <span class='hs-conop'>:>:</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>p'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>q'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>q</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <a name="line-74"></a> <span class='hs-varid'>ps'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>q''</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>q'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <a name="line-75"></a> <span class='hs-varid'>return</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-conop'>:></span> <span class='hs-varid'>q''</span><span class='hs-layout'>)</span> <a name="line-76"></a> <a name="line-77"></a><a name="commuteNoConflictsRL"></a><span class='hs-definition'>commuteNoConflictsRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</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'>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-layout'>(</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'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-78"></a><span class='hs-definition'>commuteNoConflictsRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilRL</span> <span class='hs-conop'>:></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-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <a name="line-79"></a><span class='hs-definition'>commuteNoConflictsRL</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-conop'>:></span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>q'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>p'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflicts</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span> <a name="line-80"></a> <span class='hs-varid'>q''</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span> <span class='hs-conop'>:></span> <span class='hs-varid'>q'</span><span class='hs-layout'>)</span> <a name="line-81"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>q''</span> <span class='hs-conop'>:></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-82"></a> <a name="line-83"></a><a name="commuteNoConflictsRLFL"></a><span class='hs-definition'>commuteNoConflictsRLFL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CommuteNoConflicts</span> <span class='hs-varid'>p</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-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'>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-layout'>(</span><span class='hs-conid'>FL</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'>y</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-84"></a><span class='hs-definition'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-conid'>NilRL</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-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>ys</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <a name="line-85"></a><span class='hs-definition'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilFL</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-conid'>NilFL</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <a name="line-86"></a><span class='hs-definition'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></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'>y'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <a name="line-87"></a> <span class='hs-varid'>ys'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>xs''</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteNoConflictsRLFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <a name="line-88"></a> <span class='hs-varid'>return</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-conop'>:></span> <span class='hs-varid'>xs''</span><span class='hs-layout'>)</span> <a name="line-89"></a> </pre></body> </html>
