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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2003-2004 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'>{-# LANGUAGE CPP , ScopedTypeVariables #-}</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-21"></a>
<a name="line-22"></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'>Depends</span> <span class='hs-layout'>(</span> <span class='hs-varid'>getTagsRight</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>areUnrelatedRepos</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>mergeThem</span><span class='hs-layout'>,</span> <span class='hs-varid'>findCommonWithThem</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>countUsThem</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeFromPatchSet</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>optimizePatchset</span><span class='hs-layout'>,</span> <span class='hs-varid'>deepOptimizePatchset</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>slightlyOptimizePatchset</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>getPatchesBeyondTag</span><span class='hs-layout'>,</span> <span class='hs-varid'>getPatchesInTag</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>splitOnTag</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>newsetUnion</span><span class='hs-layout'>,</span> <span class='hs-varid'>newsetIntersection</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>commuteToEnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>findUncommon</span><span class='hs-layout'>,</span> <span class='hs-varid'>merge2FL</span>
<a name="line-32"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-33"></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'>delete</span><span class='hs-layout'>,</span> <span class='hs-varid'>intersect</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-34"></a>
<a name="line-35"></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-layout'>(</span> <span class='hs-conid'>RepoPatch</span><span class='hs-layout'>,</span> <span class='hs-varid'>getdeps</span><span class='hs-layout'>,</span> <span class='hs-varid'>commute</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteFLorComplain</span><span class='hs-layout'>,</span> <span class='hs-varid'>commuteRL</span> <span class='hs-layout'>)</span>
<a name="line-36"></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'>Info</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PatchInfo</span><span class='hs-layout'>,</span> <span class='hs-varid'>isTag</span><span class='hs-layout'>,</span> <span class='hs-varid'>humanFriendly</span> <span class='hs-layout'>)</span>
<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'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Merge</span> <span class='hs-layout'>(</span> <span class='hs-varid'>mergeFL</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'>Permutations</span> <span class='hs-layout'>(</span> <span class='hs-varid'>partitionFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>partitionRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>removeSubsequenceRL</span> <span class='hs-layout'>)</span>
<a name="line-39"></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'>PatchInfoAnd</span><span class='hs-layout'>(</span> <span class='hs-conid'>PatchInfoAnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>hopefully</span><span class='hs-layout'>,</span> <span class='hs-varid'>hopefullyM</span><span class='hs-layout'>,</span> <span class='hs-varid'>info</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'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Eq</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> <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-41"></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> <span class='hs-varid'>unsafeCoercePStart</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'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Ordered</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><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><span class='hs-layout'>,</span>
<a name="line-43"></a> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapFL</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <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-conid'>FL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>isShorterThanRL</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-45"></a> <span class='hs-varid'>reverseFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL</span><span class='hs-layout'>,</span> <span class='hs-layout'>)</span>
<a name="line-46"></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'>Set</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PatchSet</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'>Tagged</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'>SealedPatchSet</span><span class='hs-layout'>,</span> <span class='hs-varid'>newset2RL</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'>ProgressPatches</span> <span class='hs-layout'>(</span> <span class='hs-varid'>progressRL</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'>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-keyglyph'>..</span><span class='hs-layout'>)</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-varid'>flipSeal</span><span class='hs-layout'>,</span> <span class='hs-varid'>seal</span> <span class='hs-layout'>)</span>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-varid'>renderString</span><span class='hs-layout'>,</span> <span class='hs-varid'>vcat</span> <span class='hs-layout'>)</span>
<a name="line-50"></a><span class='hs-cpp'>#include "impossible.h"</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-comment'>{-|
<a name="line-53"></a>with_partial_intersection takes two 'PatchSet's and splits them into a /common/
<a name="line-54"></a>intersection portion and two sets of patches. The intersection, however,
<a name="line-55"></a>is only lazily determined, so there is no guarantee that all intersecting
<a name="line-56"></a>patches will be included in the intersection 'PatchSet'. This is a pretty
<a name="line-57"></a>efficient function, because it makes use of the already-broken-up nature of
<a name="line-58"></a>'PatchSet's.
<a name="line-59"></a>
<a name="line-60"></a>Note that the first argument to with_partial_intersection should be
<a name="line-61"></a>the repository that is more cheaply accessed (i.e. local), as
<a name="line-62"></a>with_partial_intersection does its best to reduce the number of
<a name="line-63"></a>inventories that are accessed from its rightmost argument.
<a name="line-64"></a>-}</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="with_partial_intersection"></a><span class='hs-definition'>with_partial_intersection</span>
<a name="line-67"></a> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-68"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>FORALL</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</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'>start</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-69"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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'>x</span><span class='hs-layout'>)</span>
<a name="line-70"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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'>c</span><span class='hs-layout'>)</span>
<a name="line-71"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ddd</span><span class='hs-layout'>)</span>
<a name="line-72"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ddd</span>
<a name="line-73"></a><span class='hs-definition'>with_partial_intersection</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps1</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>j</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ps1</span> <span class='hs-layout'>(</span><span class='hs-varid'>newset2RL</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-74"></a><span class='hs-definition'>with_partial_intersection</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps2</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-varid'>j</span> <span class='hs-keyglyph'>=</span>
<a name="line-75"></a> <span class='hs-varid'>j</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>newset2RL</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>ps2</span>
<a name="line-76"></a><span class='hs-definition'>with_partial_intersection</span> <span class='hs-varid'>bbb</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>ta</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-layout'>)</span> <span class='hs-varid'>j</span>
<a name="line-77"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>b</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>simpleTag</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>ta</span><span class='hs-layout'>)</span> <span class='hs-varid'>bbb</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>j</span> <span class='hs-varid'>t</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeCoerceP</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-78"></a><span class='hs-definition'>with_partial_intersection</span> <span class='hs-varid'>aaa</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>b</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>tb</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>pb</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>tbs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>j</span>
<a name="line-79"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>hopefullyM</span> <span class='hs-varid'>tb</span> <span class='hs-keyword'>of</span>
<a name="line-80"></a> <span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>aaa</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-varop'>+<+</span><span class='hs-varid'>tb</span><span class='hs-conop'>:<:</span><span class='hs-varid'>pb</span><span class='hs-layout'>)</span> <span class='hs-varid'>tbs</span><span class='hs-layout'>)</span> <span class='hs-varid'>j</span>
<a name="line-81"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>tb</span><span class='hs-layout'>)</span> <span class='hs-varid'>aaa</span> <span class='hs-keyword'>of</span>
<a name="line-82"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>com</span> <span class='hs-conop'>:></span> <span class='hs-varid'>us</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>j</span> <span class='hs-varid'>com</span> <span class='hs-varid'>us</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafeCoerceP</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-83"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>impossible</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="getPatchesBeyondTag"></a><span class='hs-definition'>getPatchesBeyondTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FlippedSeal</span> <span class='hs-layout'>(</span><span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-86"></a><span class='hs-definition'>getPatchesBeyondTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>hp</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-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>hp</span> <span class='hs-varop'>==</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flipSeal</span> <span class='hs-varid'>ps</span>
<a name="line-87"></a><span class='hs-definition'>getPatchesBeyondTag</span> <span class='hs-varid'>t</span> <span class='hs-varid'>patchset</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-88"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>info</span> <span class='hs-varid'>hp</span> <span class='hs-varop'>==</span> <span class='hs-varid'>t</span>
<a name="line-89"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>getTagsRight</span> <span class='hs-varid'>patchset</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>info</span> <span class='hs-varid'>hp</span><span class='hs-keyglyph'>]</span>
<a name="line-90"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>flipSeal</span> <span class='hs-varop'>$</span> <span class='hs-conid'>NilRL</span> <span class='hs-comment'>-- special case to avoid looking at redundant patches</span>
<a name="line-91"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-varid'>patchset</span> <span class='hs-keyword'>of</span> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>flipSeal</span> <span class='hs-varid'>e</span>
<a name="line-92"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>getPatchesBeyondTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-93"></a> <span class='hs-conid'>FlippedSeal</span> <span class='hs-varid'>xxs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FlippedSeal</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>xxs</span><span class='hs-layout'>)</span>
<a name="line-94"></a><span class='hs-definition'>getPatchesBeyondTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bug</span> <span class='hs-varop'>$</span> <span class='hs-str'>"tag\n"</span> <span class='hs-varop'>++</span>
<a name="line-95"></a> <span class='hs-varid'>renderString</span> <span class='hs-layout'>(</span><span class='hs-varid'>humanFriendly</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-96"></a> <span class='hs-str'>"\nis not in the patchset in getPatchesBeyondTag."</span>
<a name="line-97"></a><span class='hs-definition'>getPatchesBeyondTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ps</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-98"></a> <span class='hs-varid'>getPatchesBeyondTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="splitOnTag"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-101"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>hp</span> <span class='hs-varid'>x</span> <span class='hs-varid'>ps2</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>hp</span> <span class='hs-varop'>==</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>hp</span> <span class='hs-varid'>x</span> <span class='hs-varid'>ps2</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ps</span>
<a name="line-103"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-varid'>patchset</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>hp</span> <span class='hs-varop'>==</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>getTagsRight</span> <span class='hs-varid'>patchset</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>info</span> <span class='hs-varid'>hp</span><span class='hs-keyglyph'>]</span>
<a name="line-105"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>hp</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>ps</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-conid'>NilRL</span>
<a name="line-106"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>partitionRL</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>`notElem`</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:</span><span class='hs-varid'>ds</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>info</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</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-107"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:<:</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-108"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>getTagsRight</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:<:</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span>
<a name="line-109"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>x</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>a</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b</span>
<a name="line-110"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-varop'>$</span> <span class='hs-varid'>eatOne</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:<:</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span> <span class='hs-keyword'>of</span>
<a name="line-111"></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'>xx</span> <span class='hs-conop'>:></span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>yy</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>impossible</span>
<a name="line-113"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getdeps</span> <span class='hs-layout'>(</span><span class='hs-varid'>hopefully</span> <span class='hs-varid'>hp</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-varid'>eatOne</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-115"></a> <span class='hs-varid'>eatOne</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps1</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ps2</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps1</span><span class='hs-varop'>+<+</span><span class='hs-varid'>x</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps2</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts'</span>
<a name="line-116"></a> <span class='hs-varid'>eatOne</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bug</span> <span class='hs-str'>"a stubborn case in splitOnTag (theoretically possible)"</span>
<a name="line-117"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</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'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-118"></a> <span class='hs-varid'>ns</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ns</span> <span class='hs-conop'>:></span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:<:</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-119"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ps</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-120"></a><span class='hs-definition'>splitOnTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bug</span> <span class='hs-varop'>$</span> <span class='hs-str'>"tag\n"</span> <span class='hs-varop'>++</span>
<a name="line-121"></a> <span class='hs-varid'>renderString</span> <span class='hs-layout'>(</span><span class='hs-varid'>humanFriendly</span> <span class='hs-varid'>t0</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span>
<a name="line-122"></a> <span class='hs-str'>"\nis not in the patchset in splitOnTag."</span>
<a name="line-123"></a>
<a name="line-124"></a><a name="getPatchesInTag"></a><span class='hs-comment'>-- | @getPatchesInTag t ps@ returns a 'SealedPatchSet' of all</span>
<a name="line-125"></a><span class='hs-comment'>-- patches in @ps@ which are contained in @t@.</span>
<a name="line-126"></a><span class='hs-definition'>getPatchesInTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SealedPatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span>
<a name="line-127"></a><span class='hs-definition'>getPatchesInTag</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ns</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitOnTag</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ns</span> <span class='hs-keyword'>of</span>
<a name="line-128"></a> <span class='hs-varid'>ns'</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>seal</span> <span class='hs-varid'>ns'</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="getTagsRight"></a><span class='hs-comment'>-- | @getTagsRight ps@ returns the 'PatchInfo' for all the patches in</span>
<a name="line-131"></a><span class='hs-comment'>-- @ps@ that are not depended on by anything else *through explicit</span>
<a name="line-132"></a><span class='hs-comment'>-- dependencies*. Tags are a likely candidate, although we may also</span>
<a name="line-133"></a><span class='hs-comment'>-- find some non-tag patches in this list.</span>
<a name="line-134"></a><span class='hs-comment'>--</span>
<a name="line-135"></a><span class='hs-comment'>-- Keep in mind that in a typical repository with a lot of tags, only a small</span>
<a name="line-136"></a><span class='hs-comment'>-- fraction of tags would be returned as they would be at least indirectly</span>
<a name="line-137"></a><span class='hs-comment'>-- depended on by the topmost ones.</span>
<a name="line-138"></a><span class='hs-definition'>getTagsRight</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>PatchInfo</span><span class='hs-keyglyph'>]</span>
<a name="line-139"></a><span class='hs-definition'>getTagsRight</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getTagsR</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>infoAndDeps</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span>
<a name="line-140"></a><span class='hs-definition'>getTagsRight</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getTagsR</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>infoAndDeps</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span><span class='hs-varop'>+<+</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="getTagsR"></a><span class='hs-definition'>getTagsR</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchInfo</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PatchInfo</span><span class='hs-keyglyph'>]</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'>PatchInfo</span><span class='hs-keyglyph'>]</span>
<a name="line-143"></a><span class='hs-definition'>getTagsR</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-144"></a><span class='hs-definition'>getTagsR</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>i0</span><span class='hs-layout'>,</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>pps0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i0</span> <span class='hs-conop'>:</span> <span class='hs-varid'>getTagsR</span> <span class='hs-varid'>pps0</span>
<a name="line-145"></a><span class='hs-definition'>getTagsR</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>i0</span><span class='hs-layout'>,</span><span class='hs-conid'>Just</span> <span class='hs-varid'>ds0</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>pps0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i0</span> <span class='hs-conop'>:</span> <span class='hs-varid'>getTagsR</span> <span class='hs-layout'>(</span><span class='hs-varid'>drop_tags_r</span> <span class='hs-varid'>ds0</span> <span class='hs-varid'>pps0</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-keyword'>where</span>
<a name="line-147"></a> <span class='hs-comment'>-- example traversal given dependencies:</span>
<a name="line-148"></a> <span class='hs-comment'>--</span>
<a name="line-149"></a> <span class='hs-comment'>-- X1 -> X2</span>
<a name="line-150"></a> <span class='hs-comment'>-- X1 -> X4</span>
<a name="line-151"></a> <span class='hs-comment'>-- X2 -> X3</span>
<a name="line-152"></a> <span class='hs-comment'>--</span>
<a name="line-153"></a> <span class='hs-comment'>-- [X2,X4]: | o1 o2 X2 o3 o4 X3 o5 X5</span>
<a name="line-154"></a> <span class='hs-comment'>-- o1 |o2 X2 o3 o4 X3 o5 X5</span>
<a name="line-155"></a> <span class='hs-comment'>-- [X4,X3]: o1 o2 | o3 o4 X3 o5 X5</span>
<a name="line-156"></a> <span class='hs-comment'>-- ...</span>
<a name="line-157"></a> <span class='hs-comment'>-- [X4]: o1 o2 o3 o4 | o5 X5</span>
<a name="line-158"></a> <span class='hs-comment'>-- ...</span>
<a name="line-159"></a> <span class='hs-comment'>-- []: o1 o2 o3 o4 o5</span>
<a name="line-160"></a> <span class='hs-varid'>drop_tags_r</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PatchInfo</span><span class='hs-keyglyph'>]</span>
<a name="line-161"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchInfo</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PatchInfo</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchInfo</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PatchInfo</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-162"></a> <span class='hs-varid'>drop_tags_r</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>pps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pps</span>
<a name="line-163"></a> <span class='hs-varid'>drop_tags_r</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-164"></a> <span class='hs-varid'>drop_tags_r</span> <span class='hs-varid'>ds</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:</span><span class='hs-varid'>pps</span><span class='hs-layout'>)</span>
<a name="line-165"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>hp</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>ds</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>hp</span> <span class='hs-keyword'>of</span>
<a name="line-166"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>ds'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>drop_tags_r</span> <span class='hs-layout'>(</span><span class='hs-varid'>ds'</span><span class='hs-varop'>++</span><span class='hs-varid'>delete</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varid'>hp</span><span class='hs-layout'>)</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-varid'>pps</span>
<a name="line-167"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>drop_tags_r</span> <span class='hs-layout'>(</span><span class='hs-varid'>delete</span> <span class='hs-layout'>(</span><span class='hs-varid'>fst</span> <span class='hs-varid'>hp</span><span class='hs-layout'>)</span> <span class='hs-varid'>ds</span><span class='hs-layout'>)</span> <span class='hs-varid'>pps</span>
<a name="line-168"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hp</span> <span class='hs-conop'>:</span> <span class='hs-varid'>drop_tags_r</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>pps</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="infoAndDeps"></a><span class='hs-definition'>infoAndDeps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchInfoAnd</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-layout'>(</span><span class='hs-conid'>PatchInfo</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PatchInfo</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-171"></a><span class='hs-definition'>infoAndDeps</span> <span class='hs-varid'>p</span>
<a name="line-172"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isTag</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-varid'>getdeps</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>hopefullyM</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-173"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-174"></a>
<a name="line-175"></a><a name="deepOptimizePatchset"></a><span class='hs-comment'>-- | @deepOptimizePatchset@ runs through all patches whether they are in the</span>
<a name="line-176"></a><span class='hs-comment'>-- surface inventory or the deep one.</span>
<a name="line-177"></a><span class='hs-definition'>deepOptimizePatchset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-178"></a><span class='hs-definition'>deepOptimizePatchset</span> <span class='hs-varid'>ns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>newset2RL</span> <span class='hs-varid'>ns</span><span class='hs-layout'>)</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span>
<a name="line-179"></a>
<a name="line-180"></a><a name="optimizePatchset"></a><span class='hs-comment'>-- | @optimizePatchset@ is similar to @slightlyOptimizePatchset@ in</span>
<a name="line-181"></a><span class='hs-comment'>-- that it only works on the surface inventory (see below), but it</span>
<a name="line-182"></a><span class='hs-comment'>-- works a bit harder and can optimize several tags.</span>
<a name="line-183"></a><span class='hs-comment'>--</span>
<a name="line-184"></a><span class='hs-comment'>-- * surface inventory: the sequence of patches that corresponds</span>
<a name="line-185"></a><span class='hs-comment'>-- to the @\_darcs/hashed\_inventory@ or @\_darcs/inventory@ files</span>
<a name="line-186"></a><span class='hs-comment'>--</span>
<a name="line-187"></a><span class='hs-comment'>-- * deep inventory: the sequence of sequences of patches that</span>
<a name="line-188"></a><span class='hs-comment'>-- corresponds to the @\_darcs/inventories@ directory</span>
<a name="line-189"></a><span class='hs-definition'>optimizePatchset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-190"></a><span class='hs-definition'>optimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ts</span>
<a name="line-191"></a><span class='hs-definition'>optimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</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'>ts</span><span class='hs-layout'>)</span>
<a name="line-192"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isTag</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>getTagsRight</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</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'>ts</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>info</span> <span class='hs-varid'>p</span><span class='hs-keyglyph'>]</span>
<a name="line-193"></a> <span class='hs-comment'>-- all subsequent patches depend on p</span>
<a name="line-194"></a> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>optimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-195"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>p</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>ps'</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts'</span><span class='hs-layout'>)</span>
<a name="line-196"></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'>optimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-197"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</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'>ts'</span>
<a name="line-198"></a>
<a name="line-199"></a><a name="slightlyOptimizePatchset"></a><span class='hs-comment'>-- | @slightlyOptimizePatchset@ only works on the surface inventory</span>
<a name="line-200"></a><span class='hs-comment'>-- (see 'optimizePatchset') and only optimises at most one tag in</span>
<a name="line-201"></a><span class='hs-comment'>-- there, going for the most recent tag which has no non-depended</span>
<a name="line-202"></a><span class='hs-comment'>-- patch after it. Older tags won't be 'clean', which means the</span>
<a name="line-203"></a><span class='hs-comment'>-- PatchSet will not be in 'unclean :< clean' state.</span>
<a name="line-204"></a><span class='hs-definition'>slightlyOptimizePatchset</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-205"></a><span class='hs-definition'>slightlyOptimizePatchset</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps0</span> <span class='hs-varid'>ts0</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sops</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>progressRL</span> <span class='hs-str'>"Optimizing inventory"</span> <span class='hs-varid'>ps0</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts0</span>
<a name="line-206"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>sops</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-207"></a> <span class='hs-varid'>sops</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ts</span>
<a name="line-208"></a> <span class='hs-varid'>sops</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-209"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isTag</span> <span class='hs-layout'>(</span><span class='hs-varid'>info</span> <span class='hs-varid'>hp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>getTagsRight</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-varop'>==</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>info</span> <span class='hs-varid'>hp</span><span class='hs-keyglyph'>]</span>
<a name="line-210"></a> <span class='hs-keyword'>then</span> <span class='hs-comment'>-- exactly one tag and it depends on everything not already archived</span>
<a name="line-211"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>hp</span> <span class='hs-conid'>Nothing</span> <span class='hs-varid'>ps</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-212"></a> <span class='hs-keyword'>else</span> <span class='hs-comment'>-- other tags or other top-level patches too (so move past hp)</span>
<a name="line-213"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>sops</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>progressRL</span> <span class='hs-str'>"Optimizing inventory"</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span> <span class='hs-keyword'>of</span>
<a name="line-214"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts'</span>
<a name="line-215"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-- move past hp</span>
<a name="line-216"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>sops</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span> <span class='hs-keyword'>of</span>
<a name="line-217"></a> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts'</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>hp</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts'</span>
<a name="line-218"></a>
<a name="line-219"></a><a name="commuteToEnd"></a><span class='hs-definition'>commuteToEnd</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'>start</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-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-220"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-221"></a><span class='hs-definition'>commuteToEnd</span> <span class='hs-conid'>NilRL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>ts</span> <span class='hs-conop'>:></span> <span class='hs-varid'>ps</span>
<a name="line-222"></a><span class='hs-definition'>commuteToEnd</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-conid'>PatchSet</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-223"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>p</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>fastRemoveRL</span> <span class='hs-varid'>p</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-224"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>xs'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>commuteToEnd</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-225"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>impossible</span> <span class='hs-comment'>-- "Nothing is impossible"</span>
<a name="line-226"></a><span class='hs-definition'>commuteToEnd</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ys</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-227"></a> <span class='hs-varid'>commuteToEnd</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>xs</span><span class='hs-varop'>+<+</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-228"></a><span class='hs-definition'>commuteToEnd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span>
<a name="line-229"></a>
<a name="line-230"></a><a name="removeFromPatchSet"></a><span class='hs-definition'>removeFromPatchSet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-231"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-232"></a><span class='hs-definition'>removeFromPatchSet</span> <span class='hs-varid'>bad0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rfns</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>bad0</span><span class='hs-layout'>)</span>
<a name="line-233"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>rfns</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-234"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-235"></a> <span class='hs-varid'>rfns</span> <span class='hs-varid'>bad</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-236"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>all</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>bad</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-237"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>ps'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>removeSubsequenceRL</span> <span class='hs-varid'>bad</span> <span class='hs-varid'>ps</span>
<a name="line-238"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts</span>
<a name="line-239"></a> <span class='hs-varid'>rfns</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-240"></a> <span class='hs-varid'>rfns</span> <span class='hs-varid'>bad</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>tps</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-241"></a> <span class='hs-varid'>rfns</span> <span class='hs-varid'>bad</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span><span class='hs-varop'>+<+</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-varid'>tps</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-242"></a>
<a name="line-243"></a><a name="findCommonWithThem"></a><span class='hs-definition'>findCommonWithThem</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-244"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-245"></a><span class='hs-definition'>findCommonWithThem</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyglyph'>=</span>
<a name="line-246"></a> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-varop'>$</span>
<a name="line-247"></a> <span class='hs-keyglyph'>\</span><span class='hs-varid'>common</span> <span class='hs-varid'>us'</span> <span class='hs-varid'>them'</span> <span class='hs-keyglyph'>-></span>
<a name="line-248"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>partitionFL</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>them'</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>info</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseRL</span> <span class='hs-varid'>us'</span> <span class='hs-keyword'>of</span>
<a name="line-249"></a> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-varid'>bad</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>bug</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Failed to commute common patches:\n"</span> <span class='hs-varop'>++</span>
<a name="line-250"></a> <span class='hs-layout'>(</span><span class='hs-varid'>renderString</span> <span class='hs-varop'>$</span> <span class='hs-varid'>vcat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>humanFriendly</span> <span class='hs-varop'>.</span> <span class='hs-varid'>info</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverseFL</span> <span class='hs-varid'>bad</span><span class='hs-layout'>)</span>
<a name="line-251"></a> <span class='hs-varid'>common2</span> <span class='hs-conop'>:></span> <span class='hs-sel'>_nilfl</span> <span class='hs-conop'>:></span> <span class='hs-varid'>only_ours</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>common2</span><span class='hs-layout'>)</span> <span class='hs-varid'>common</span> <span class='hs-conop'>:></span> <span class='hs-varid'>unsafeCoerceP</span> <span class='hs-varid'>only_ours</span>
<a name="line-252"></a>
<a name="line-253"></a><a name="findUncommon"></a><span class='hs-definition'>findUncommon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-254"></a> <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'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conop'>:\/:</span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</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-255"></a><span class='hs-definition'>findUncommon</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyglyph'>=</span>
<a name="line-256"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>findCommonWithThem</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyword'>of</span>
<a name="line-257"></a> <span class='hs-sel'>_common</span> <span class='hs-conop'>:></span> <span class='hs-varid'>us'</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>findCommonWithThem</span> <span class='hs-varid'>them</span> <span class='hs-varid'>us</span> <span class='hs-keyword'>of</span>
<a name="line-258"></a> <span class='hs-keyword'>_</span> <span class='hs-conop'>:></span> <span class='hs-varid'>them'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>unsafeCoercePStart</span> <span class='hs-varid'>us'</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>them'</span>
<a name="line-259"></a>
<a name="line-260"></a><a name="countUsThem"></a><span class='hs-definition'>countUsThem</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-261"></a><span class='hs-definition'>countUsThem</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyglyph'>=</span>
<a name="line-262"></a> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-varop'>$</span>
<a name="line-263"></a> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>us'</span> <span class='hs-varid'>them'</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>uu</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>us'</span>
<a name="line-264"></a> <span class='hs-varid'>tt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>them'</span>
<a name="line-265"></a> <span class='hs-keyword'>in</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-varid'>uu</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>tt</span><span class='hs-layout'>,</span> <span class='hs-varid'>length</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tt</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>uu</span><span class='hs-layout'>)</span>
<a name="line-266"></a>
<a name="line-267"></a><a name="mergeThem"></a><span class='hs-definition'>mergeThem</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-268"></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-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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>
<a name="line-269"></a><span class='hs-definition'>mergeThem</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyglyph'>=</span>
<a name="line-270"></a> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-varop'>$</span>
<a name="line-271"></a> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>us'</span> <span class='hs-varid'>them'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>merge2FL</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varid'>us'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varid'>them'</span><span class='hs-layout'>)</span>
<a name="line-272"></a>
<a name="line-273"></a><a name="newsetIntersection"></a><span class='hs-definition'>newsetIntersection</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SealedPatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SealedPatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span>
<a name="line-274"></a><span class='hs-definition'>newsetIntersection</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>seal</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-conid'>NilRL</span>
<a name="line-275"></a><span class='hs-definition'>newsetIntersection</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-276"></a><span class='hs-definition'>newsetIntersection</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</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>
<a name="line-277"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>newsetIntersection</span> <span class='hs-varid'>ys</span> <span class='hs-keyword'>of</span>
<a name="line-278"></a> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>z</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <span class='hs-varop'>$</span>
<a name="line-279"></a> <span class='hs-keyglyph'>\</span><span class='hs-varid'>common</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span>
<a name="line-280"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`intersect`</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>of</span>
<a name="line-281"></a> <span class='hs-varid'>morecommon</span> <span class='hs-keyglyph'>-></span>
<a name="line-282"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>partitionRL</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>info</span> <span class='hs-varid'>e</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>morecommon</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-283"></a> <span class='hs-varid'>commonps</span> <span class='hs-conop'>:></span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>seal</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>commonps</span> <span class='hs-varid'>common</span>
<a name="line-284"></a>
<a name="line-285"></a><a name="newsetUnion"></a><span class='hs-definition'>newsetUnion</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SealedPatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SealedPatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span><span class='hs-layout'>)</span>
<a name="line-286"></a><span class='hs-definition'>newsetUnion</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>seal</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-conid'>NilRL</span> <span class='hs-conid'>NilRL</span>
<a name="line-287"></a><span class='hs-definition'>newsetUnion</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-288"></a><span class='hs-definition'>newsetUnion</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>y</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>psy</span> <span class='hs-varid'>tsy</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-conid'>Sealed</span> <span class='hs-varid'>y2</span><span class='hs-conop'>:</span><span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-289"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mergeThem</span> <span class='hs-varid'>y</span> <span class='hs-varid'>y2</span> <span class='hs-keyword'>of</span>
<a name="line-290"></a> <span class='hs-conid'>Sealed</span> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>newsetUnion</span> <span class='hs-varop'>$</span> <span class='hs-varid'>seal</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>p2</span><span class='hs-varop'>+<+</span><span class='hs-varid'>psy</span><span class='hs-layout'>)</span> <span class='hs-varid'>tsy</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>ys</span>
<a name="line-291"></a>
<a name="line-292"></a><a name="merge2FL"></a><span class='hs-comment'>-- | Merge two FLs (say L and R), starting in a common context. The result is a</span>
<a name="line-293"></a><span class='hs-comment'>-- FL starting in the original end context of L, going to a new context that is</span>
<a name="line-294"></a><span class='hs-comment'>-- the result of applying all patches from R on top of patches from L.</span>
<a name="line-295"></a><span class='hs-comment'>--</span>
<a name="line-296"></a><span class='hs-comment'>-- While this function is similar to 'mergeFL', there are three important</span>
<a name="line-297"></a><span class='hs-comment'>-- differences to keep in mind:</span>
<a name="line-298"></a><span class='hs-comment'>--</span>
<a name="line-299"></a><span class='hs-comment'>-- * 'mergeFL' does not correctly deal with duplicate patches whereas this one</span>
<a name="line-300"></a><span class='hs-comment'>-- does</span>
<a name="line-301"></a><span class='hs-comment'>-- (Question from Eric Kow: in what sense? Why not fix the mergeFL instance?)</span>
<a name="line-302"></a><span class='hs-comment'>--</span>
<a name="line-303"></a><span class='hs-comment'>-- * 'mergeFL' returns both paths of the merge diamond, but this version only</span>
<a name="line-304"></a><span class='hs-comment'>-- returns one, so you'd better choose the order carefully, eg.</span>
<a name="line-305"></a><span class='hs-comment'>-- (@merge2FL l r@)</span>
<a name="line-306"></a><span class='hs-comment'>--</span>
<a name="line-307"></a><span class='hs-comment'>-- * The conventional order we use in this function is reversed from</span>
<a name="line-308"></a><span class='hs-comment'>-- 'mergeFL' (so @mergeFL r l@ vs. @merge2FL l r@. This does not</span>
<a name="line-309"></a><span class='hs-comment'>-- matter so much for the former since you get both paths.</span>
<a name="line-310"></a><span class='hs-comment'>-- (Question from Eric Kow: should we flip merge2FL for more uniformity in</span>
<a name="line-311"></a><span class='hs-comment'>-- the code?)</span>
<a name="line-312"></a><span class='hs-definition'>merge2FL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-313"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-314"></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-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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>
<a name="line-315"></a><span class='hs-definition'>merge2FL</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>seal</span> <span class='hs-conid'>NilFL</span>
<a name="line-316"></a><span class='hs-definition'>merge2FL</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>seal</span> <span class='hs-varid'>ys</span>
<a name="line-317"></a><span class='hs-definition'>merge2FL</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-conid'>Just</span> <span class='hs-varid'>xs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fastRemoveFL</span> <span class='hs-varid'>y</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>merge2FL</span> <span class='hs-varid'>xs'</span> <span class='hs-varid'>ys</span>
<a name="line-318"></a><span class='hs-definition'>merge2FL</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> <span class='hs-conid'>Just</span> <span class='hs-varid'>ys'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fastRemoveFL</span> <span class='hs-varid'>x</span> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>merge2FL</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys'</span>
<a name="line-319"></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'>mergeFL</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:\/:</span> <span class='hs-varid'>ys</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-320"></a> <span class='hs-varid'>ys'</span> <span class='hs-conop'>:/\:</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>merge2FL</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys'</span>
<a name="line-321"></a>
<a name="line-322"></a><a name="simpleTag"></a><span class='hs-definition'>simpleTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</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'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-323"></a><span class='hs-definition'>simpleTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-varid'>h</span> <span class='hs-varid'>pst</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-324"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t0</span> <span class='hs-varop'>==</span> <span class='hs-varid'>info</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</span> <span class='hs-varid'>t</span> <span class='hs-varid'>h</span> <span class='hs-varid'>pst</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-325"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>ps'</span> <span class='hs-varid'>ts'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>simpleTag</span> <span class='hs-varid'>t0</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:<:</span><span class='hs-varid'>pst</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-326"></a> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>ps</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>ps'</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts'</span>
<a name="line-327"></a><span class='hs-definition'>simpleTag</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-328"></a>
<a name="line-329"></a><a name="areUnrelatedRepos"></a><span class='hs-definition'>areUnrelatedRepos</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchSet</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>start</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-330"></a><span class='hs-definition'>areUnrelatedRepos</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-keyglyph'>=</span>
<a name="line-331"></a> <span class='hs-varid'>with_partial_intersection</span> <span class='hs-varid'>us</span> <span class='hs-varid'>them</span> <span class='hs-varid'>checkit</span>
<a name="line-332"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>checkit</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tagged</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-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-333"></a> <span class='hs-varid'>checkit</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>u</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>t</span> <span class='hs-varop'>`isShorterThanRL`</span> <span class='hs-num'>5</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-334"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>u</span> <span class='hs-varop'>`isShorterThanRL`</span> <span class='hs-num'>5</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-335"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>null</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intersect</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>u</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-336"></a>
<a name="line-337"></a><a name="fastRemoveFL"></a><span class='hs-comment'>-- | Remove a patch from FL, using PatchInfo equality. The result is Just</span>
<a name="line-338"></a><span class='hs-comment'>-- whenever the patch has been found and removed. If the patch is not present</span>
<a name="line-339"></a><span class='hs-comment'>-- in the sequence at all or any commutation fails, we get Nothing. First two</span>
<a name="line-340"></a><span class='hs-comment'>-- cases are optimisations for the common cases where the head of the list is</span>
<a name="line-341"></a><span class='hs-comment'>-- the patch to remove, or the patch is not there at all.</span>
<a name="line-342"></a><span class='hs-definition'>fastRemoveFL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInfoAnd</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-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-343"></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'>PatchInfoAnd</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-varid'>z</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-344"></a><span class='hs-definition'>fastRemoveFL</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-345"></a><span class='hs-definition'>fastRemoveFL</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-conop'>:>:</span><span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>a</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>bs</span>
<a name="line-346"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>mapFL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-347"></a><span class='hs-definition'>fastRemoveFL</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-conop'>:>:</span><span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>a'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>bs'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pullout</span> <span class='hs-conid'>NilRL</span> <span class='hs-varid'>bs</span>
<a name="line-348"></a> <span class='hs-varid'>a''</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-conop'>:></span> <span class='hs-varid'>a'</span><span class='hs-layout'>)</span>
<a name="line-349"></a> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>a''</span> <span class='hs-varop'>=\/=</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-350"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>b'</span><span class='hs-conop'>:>:</span><span class='hs-varid'>bs'</span><span class='hs-layout'>)</span>
<a name="line-351"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>info</span> <span class='hs-varid'>a</span>
<a name="line-352"></a> <span class='hs-varid'>pullout</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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'>a0</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-353"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-354"></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'>PatchInfoAnd</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>a0</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-355"></a> <span class='hs-varid'>pullout</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilFL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-356"></a> <span class='hs-varid'>pullout</span> <span class='hs-varid'>acc</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-varid'>info</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>acc'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commuteRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>acc</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-357"></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-varid'>reverseRL</span> <span class='hs-varid'>acc'</span> <span class='hs-varop'>+>+</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-358"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pullout</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:<:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
<a name="line-359"></a>
<a name="line-360"></a><a name="fastRemoveRL"></a><span class='hs-definition'>fastRemoveRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchInfoAnd</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'>z</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-361"></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'>PatchInfoAnd</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-362"></a><span class='hs-definition'>fastRemoveRL</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-363"></a><span class='hs-definition'>fastRemoveRL</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-conop'>:<:</span><span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>a</span> <span class='hs-varop'>=/\=</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>bs</span>
<a name="line-364"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>info</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`notElem`</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>info</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-365"></a><span class='hs-definition'>fastRemoveRL</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-conop'>:<:</span><span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>bs'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>a'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pullout</span> <span class='hs-conid'>NilFL</span> <span class='hs-varid'>bs</span>
<a name="line-366"></a> <span class='hs-varid'>b'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>a''</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>commute</span> <span class='hs-layout'>(</span><span class='hs-varid'>a'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span>
<a name="line-367"></a> <span class='hs-conid'>IsEq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>a''</span> <span class='hs-varop'>=/\=</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-368"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>b'</span><span class='hs-conop'>:<:</span><span class='hs-varid'>bs'</span><span class='hs-layout'>)</span>
<a name="line-369"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>info</span> <span class='hs-varid'>a</span>
<a name="line-370"></a> <span class='hs-varid'>pullout</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>FL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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'>b</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-371"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</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-372"></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'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchInfoAnd</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conop'>:></span> <span class='hs-conid'>PatchInfoAnd</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'>c</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-373"></a> <span class='hs-varid'>pullout</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-374"></a> <span class='hs-varid'>pullout</span> <span class='hs-varid'>acc</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-varid'>info</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>acc'</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span> <span class='hs-keyglyph'><-</span>
<a name="line-375"></a> <span class='hs-varid'>either</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
<a name="line-376"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>commuteFLorComplain</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-conop'>:></span> <span class='hs-varid'>acc</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-377"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseFL</span> <span class='hs-varid'>acc'</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>xs</span> <span class='hs-conop'>:></span> <span class='hs-varid'>x'</span><span class='hs-layout'>)</span>
<a name="line-378"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pullout</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:>:</span><span class='hs-varid'>acc</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span>
</pre></body>
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