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<title>src/Darcs/Commands/TrackDown.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2002-2005 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-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span><span class='hs-varop'>.</span><span class='hs-conid'>TrackDown</span> <span class='hs-layout'>(</span> <span class='hs-varid'>trackdown</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span> <span class='hs-varid'>init</span> <span class='hs-layout'>)</span>
<a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Exit</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ExitCode</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span>
<a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Cmd</span> <span class='hs-layout'>(</span> <span class='hs-varid'>system</span> <span class='hs-layout'>)</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span> <span class='hs-varid'>hFlush</span><span class='hs-layout'>,</span> <span class='hs-varid'>stdout</span> <span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-layout'>(</span> <span class='hs-varid'>when</span> <span class='hs-layout'>)</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsCommand</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'>nodefaults</span> <span class='hs-layout'>)</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Arguments</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsFlag</span><span class='hs-layout'>(</span><span class='hs-conid'>SetScriptsExecutable</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bisect</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>workingRepoDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>bisect</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>setScriptsExecutableOption</span><span class='hs-layout'>,</span> <span class='hs-varid'>makeScriptsExecutable</span> <span class='hs-layout'>)</span>
<a name="line-28"></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-varid'>hopefully</span> <span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Repository</span> <span class='hs-layout'>(</span> <span class='hs-varid'>amInHashedRepository</span><span class='hs-layout'>,</span> <span class='hs-varid'>readRepo</span><span class='hs-layout'>,</span> <span class='hs-varid'>withRepoReadLock</span><span class='hs-layout'>,</span> <span class='hs-conid'>RepoJob</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'>withRecorded</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>setScriptsExecutable</span> <span class='hs-layout'>)</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Ordered</span> <span class='hs-layout'>(</span> <span class='hs-conid'>RL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conop'>:<</span><span class='hs-layout'>)</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>+<+</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-32"></a> <span class='hs-varid'>reverseRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>splitAtRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>lengthRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapFL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL_RL</span> <span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Conflict</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Conflict</span> <span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>FileHunk</span> <span class='hs-layout'>(</span> <span class='hs-conid'>IsHunk</span> <span class='hs-layout'>)</span>
<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-varop'>.</span><span class='hs-conid'>ApplyMonad</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ApplyMonad</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'>Apply</span> <span class='hs-layout'>(</span> <span class='hs-conid'>ApplyState</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'>Format</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PatchListFormat</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'>Patchy</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Patchy</span><span class='hs-layout'>,</span> <span class='hs-conid'>Invert</span><span class='hs-layout'>,</span> <span class='hs-conid'>Apply</span><span class='hs-layout'>,</span> <span class='hs-conid'>ShowPatch</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-layout'>(</span> <span class='hs-conid'>RepoPatch</span><span class='hs-layout'>,</span> <span class='hs-conid'>Named</span><span class='hs-layout'>,</span> <span class='hs-varid'>description</span><span class='hs-layout'>,</span> <span class='hs-varid'>apply</span><span class='hs-layout'>,</span> <span class='hs-varid'>invert</span> <span class='hs-layout'>)</span>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>Set</span> <span class='hs-layout'>(</span> <span class='hs-varid'>newset2RL</span> <span class='hs-layout'>)</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Printer</span> <span class='hs-layout'>(</span> <span class='hs-varid'>putDocLn</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'>Test</span> <span class='hs-layout'>(</span> <span class='hs-varid'>getTest</span> <span class='hs-layout'>)</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Lock</span> <span class='hs-layout'>(</span> <span class='hs-varid'>withTempDir</span> <span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>Tree</span><span class='hs-layout'>(</span> <span class='hs-conid'>Tree</span> <span class='hs-layout'>)</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-cpp'>#include "gadts.h"</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="trackdownDescription"></a><span class='hs-definition'>trackdownDescription</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-49"></a><span class='hs-definition'>trackdownDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Locate the most recent version lacking an error."</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="trackdownHelp"></a><span class='hs-definition'>trackdownHelp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span>
<a name="line-52"></a><span class='hs-definition'>trackdownHelp</span> <span class='hs-keyglyph'>=</span>
<a name="line-53"></a> <span class='hs-str'>"Trackdown tries to find the most recent version in the repository which\n"</span><span class='hs-varop'>++</span>
<a name="line-54"></a> <span class='hs-str'>"passes a test. Given no arguments, it uses the default repository test.\n"</span><span class='hs-varop'>++</span>
<a name="line-55"></a> <span class='hs-str'>"Given one argument, it treats it as a test command. Given two arguments,\n"</span><span class='hs-varop'>++</span>
<a name="line-56"></a> <span class='hs-str'>"the first is an initialization command with is run only once, and the\n"</span><span class='hs-varop'>++</span>
<a name="line-57"></a> <span class='hs-str'>"second is the test command.\n\n"</span><span class='hs-varop'>++</span>
<a name="line-58"></a> <span class='hs-str'>"Without the --bisect option, trackdown does linear search starting from head,\n"</span><span class='hs-varop'>++</span>
<a name="line-59"></a> <span class='hs-str'>"and moving away from head. With the --bisect option, it does binary search.\n\n"</span><span class='hs-varop'>++</span>
<a name="line-60"></a> <span class='hs-str'>"Under the assumption that failure is monotonous, trackdown produces\n"</span><span class='hs-varop'>++</span>
<a name="line-61"></a> <span class='hs-str'>"the same result with and without --bisect. (Monotonous means that when\n"</span><span class='hs-varop'>++</span>
<a name="line-62"></a> <span class='hs-str'>"moving away from head, the test result changes only once from \"fail\" to \"ok\".)\n"</span><span class='hs-varop'>++</span>
<a name="line-63"></a> <span class='hs-str'>"If failure is not monotonous, any one of the patches that break the test is\n"</span><span class='hs-varop'>++</span>
<a name="line-64"></a> <span class='hs-str'>"found at random."</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="trackdown"></a><span class='hs-definition'>trackdown</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DarcsCommand</span>
<a name="line-67"></a><span class='hs-definition'>trackdown</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DarcsCommand</span> <span class='hs-layout'>{</span><span class='hs-varid'>commandProgramName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"darcs"</span><span class='hs-layout'>,</span>
<a name="line-68"></a> <span class='hs-varid'>commandName</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"trackdown"</span><span class='hs-layout'>,</span>
<a name="line-69"></a> <span class='hs-varid'>commandHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trackdownHelp</span><span class='hs-layout'>,</span>
<a name="line-70"></a> <span class='hs-varid'>commandDescription</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trackdownDescription</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-varid'>commandExtraArgs</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>commandExtraArgHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"[[INITIALIZATION]"</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-str'>"COMMAND]"</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-74"></a> <span class='hs-varid'>commandCommand</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>trackdownCmd</span><span class='hs-layout'>,</span>
<a name="line-75"></a> <span class='hs-varid'>commandPrereq</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>amInHashedRepository</span><span class='hs-layout'>,</span>
<a name="line-76"></a> <span class='hs-varid'>commandGetArgPossibilities</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>commandArgdefaults</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nodefaults</span><span class='hs-layout'>,</span>
<a name="line-78"></a> <span class='hs-varid'>commandAdvancedOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>setScriptsExecutableOption</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-79"></a> <span class='hs-varid'>commandBasicOptions</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>workingRepoDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>bisect</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>}</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="trackdownCmd"></a><span class='hs-definition'>trackdownCmd</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-82"></a><span class='hs-definition'>trackdownCmd</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>args</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withRepoReadLock</span> <span class='hs-varid'>opts</span> <span class='hs-varop'>$</span> <span class='hs-conid'>RepoJob</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>repository</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-83"></a> <span class='hs-varid'>patches</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readRepo</span> <span class='hs-varid'>repository</span>
<a name="line-84"></a> <span class='hs-layout'>(</span><span class='hs-varid'>init</span><span class='hs-layout'>,</span><span class='hs-varid'>test</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>args</span> <span class='hs-keyword'>of</span>
<a name="line-85"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span>
<a name="line-86"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getTest</span> <span class='hs-varid'>opts</span>
<a name="line-87"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-conid'>ExitSuccess</span><span class='hs-layout'>,</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-88"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>cmd</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span>
<a name="line-89"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Tracking down command:\n"</span><span class='hs-varop'>++</span><span class='hs-varid'>cmd</span>
<a name="line-90"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-conid'>ExitSuccess</span><span class='hs-layout'>,</span> <span class='hs-varid'>system</span> <span class='hs-varid'>cmd</span><span class='hs-layout'>)</span>
<a name="line-91"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>init</span><span class='hs-layout'>,</span><span class='hs-varid'>cmd</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span>
<a name="line-92"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Initializing with command:\n"</span><span class='hs-varop'>++</span><span class='hs-varid'>init</span>
<a name="line-93"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Tracking down command:\n"</span><span class='hs-varop'>++</span><span class='hs-varid'>cmd</span>
<a name="line-94"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>system</span> <span class='hs-varid'>init</span><span class='hs-layout'>,</span> <span class='hs-varid'>system</span> <span class='hs-varid'>cmd</span><span class='hs-layout'>)</span>
<a name="line-95"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-str'>"Trackdown expects zero to two arguments."</span>
<a name="line-96"></a> <span class='hs-varid'>withRecorded</span> <span class='hs-varid'>repository</span> <span class='hs-layout'>(</span><span class='hs-varid'>withTempDir</span> <span class='hs-str'>"trackingdown"</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-97"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-conid'>SetScriptsExecutable</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span><span class='hs-layout'>)</span> <span class='hs-varid'>setScriptsExecutable</span>
<a name="line-98"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>init</span>
<a name="line-99"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-conid'>Bisect</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>opts</span>
<a name="line-100"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>trackBisect</span>
<a name="line-101"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>trackNextLinear</span><span class='hs-layout'>)</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>test</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL_RL</span> <span class='hs-varid'>hopefully</span> <span class='hs-varop'>.</span> <span class='hs-varid'>newset2RL</span> <span class='hs-varop'>$</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span>
<a name="line-102"></a>
<a name="line-103"></a><a name="trackNextLinear"></a><span class='hs-comment'>-- | linear search (without --bisect)</span>
<a name="line-104"></a><span class='hs-definition'>trackNextLinear</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepoPatch</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>~</span> <span class='hs-conid'>Tree</span><span class='hs-layout'>)</span>
<a name="line-105"></a> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ExitCode</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Named</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-106"></a><span class='hs-definition'>trackNextLinear</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>test</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:<:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-107"></a> <span class='hs-varid'>test_result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>test</span>
<a name="line-108"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>test_result</span> <span class='hs-varop'>==</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-109"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Success!"</span>
<a name="line-110"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>apply</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>`catch`</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-layout'>(</span><span class='hs-str'>"Bad patch:\n"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-111"></a> <span class='hs-varid'>makeScriptsExecutable</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-varid'>invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-112"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Trying without the patch:"</span>
<a name="line-113"></a> <span class='hs-varid'>putDocLn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>description</span> <span class='hs-varop'>$</span> <span class='hs-varid'>invert</span> <span class='hs-varid'>p</span>
<a name="line-114"></a> <span class='hs-varid'>hFlush</span> <span class='hs-varid'>stdout</span>
<a name="line-115"></a> <span class='hs-varid'>trackNextLinear</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>test</span> <span class='hs-varid'>ps</span>
<a name="line-116"></a><span class='hs-definition'>trackNextLinear</span> <span class='hs-sel'>_opts</span> <span class='hs-varid'>test</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-117"></a> <span class='hs-varid'>test_result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>test</span>
<a name="line-118"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>test_result</span> <span class='hs-varop'>==</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-119"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Success!"</span>
<a name="line-120"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Noone passed the test!"</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="trackBisect"></a><span class='hs-comment'>-- | binary search (with --bisect)</span>
<a name="line-123"></a><span class='hs-definition'>trackBisect</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsHunk</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conflict</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ExitCode</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-125"></a><span class='hs-definition'>trackBisect</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>test</span> <span class='hs-conid'>NilRL</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-126"></a> <span class='hs-varid'>test_result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>test</span>
<a name="line-127"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>test_result</span> <span class='hs-varop'>==</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-128"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Success!"</span>
<a name="line-129"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>putStrLn</span> <span class='hs-str'>"Noone passed the test!"</span>
<a name="line-130"></a><span class='hs-definition'>trackBisect</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>test</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-131"></a> <span class='hs-varid'>test_result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>test</span>
<a name="line-132"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>test_result</span> <span class='hs-varop'>==</span> <span class='hs-conid'>ExitSuccess</span>
<a name="line-133"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>putStrLn</span> <span class='hs-layout'>(</span><span class='hs-str'>"Test does not fail on head."</span><span class='hs-layout'>)</span>
<a name="line-134"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>trackNextBisect</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>curr_prog</span> <span class='hs-varid'>test</span> <span class='hs-conid'>BisectRight</span> <span class='hs-layout'>(</span><span class='hs-varid'>patchTreeFromRL</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-keyword'>where</span>
<a name="line-136"></a> <span class='hs-varid'>curr_prog</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-varid'>round</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>logBase</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lengthRL</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span><span class='hs-layout'>)</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-137"></a>
<a name="line-138"></a><a name="PatchTree"></a><span class='hs-comment'>-- | Bisect Patch Tree</span>
<a name="line-139"></a><a name="PatchTree"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PatchTree</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-keyword'>where</span>
<a name="line-140"></a> <span class='hs-conid'>Leaf</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchTree</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-141"></a> <span class='hs-conid'>Fork</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PatchTree</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'>PatchTree</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'>PatchTree</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'>z</span><span class='hs-layout'>)</span>
<a name="line-142"></a>
<a name="line-143"></a><a name="BisectDir"></a><span class='hs-comment'>-- | Direction of Bisect trackdown</span>
<a name="line-144"></a><a name="BisectDir"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>BisectDir</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BisectLeft</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BisectRight</span> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="BisectState"></a><span class='hs-comment'>-- | Progress of Bisect</span>
<a name="line-147"></a><a name="BisectState"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>BisectState</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-148"></a>
<a name="line-149"></a><a name="patchTreeFromRL"></a><span class='hs-comment'>-- | Create Bisect PatchTree from the RL</span>
<a name="line-150"></a><span class='hs-definition'>patchTreeFromRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchTree</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-151"></a><span class='hs-definition'>patchTreeFromRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-conop'>:<:</span> <span class='hs-conid'>NilRL</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Leaf</span> <span class='hs-varid'>l</span>
<a name="line-152"></a><span class='hs-definition'>patchTreeFromRL</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>splitAtRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>lengthRL</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>`div`</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-153"></a> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-conop'>:<</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Fork</span> <span class='hs-layout'>(</span><span class='hs-varid'>patchTreeFromRL</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>patchTreeFromRL</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="patchTree2RL"></a><span class='hs-comment'>-- | Convert PatchTree back to RL</span>
<a name="line-156"></a><span class='hs-definition'>patchTree2RL</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>PatchTree</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'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-157"></a><span class='hs-definition'>patchTree2RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Leaf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-conop'>:<:</span> <span class='hs-conid'>NilRL</span>
<a name="line-158"></a><span class='hs-definition'>patchTree2RL</span> <span class='hs-layout'>(</span><span class='hs-conid'>Fork</span> <span class='hs-varid'>l</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>patchTree2RL</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-varop'>+<+</span> <span class='hs-layout'>(</span><span class='hs-varid'>patchTree2RL</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="trackNextBisect"></a><span class='hs-comment'>-- | Iterate the Patch Tree</span>
<a name="line-161"></a><span class='hs-definition'>trackNextBisect</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsHunk</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conflict</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-162"></a> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BisectState</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>ExitCode</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BisectDir</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchTree</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'>IO</span> <span class='hs-conid'>()</span>
<a name="line-163"></a><span class='hs-definition'>trackNextBisect</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-varid'>dnow</span><span class='hs-layout'>,</span> <span class='hs-varid'>dtotal</span><span class='hs-layout'>)</span> <span class='hs-varid'>test</span> <span class='hs-varid'>dir</span> <span class='hs-layout'>(</span><span class='hs-conid'>Fork</span> <span class='hs-varid'>l</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-164"></a> <span class='hs-varid'>putStr</span> <span class='hs-layout'>(</span><span class='hs-str'>"Trying "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>dnow</span> <span class='hs-varop'>++</span> <span class='hs-str'>"/"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>dtotal</span> <span class='hs-varop'>++</span> <span class='hs-str'>" sequences...\n"</span><span class='hs-layout'>)</span>
<a name="line-165"></a> <span class='hs-varid'>hFlush</span> <span class='hs-varid'>stdout</span>
<a name="line-166"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>dir</span> <span class='hs-keyword'>of</span>
<a name="line-167"></a> <span class='hs-conid'>BisectRight</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>jumpHalfOnRight</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>l</span> <span class='hs-comment'>-- move in temporary repo</span>
<a name="line-168"></a> <span class='hs-conid'>BisectLeft</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>jumpHalfOnLeft</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>r</span> <span class='hs-comment'>-- within given direction</span>
<a name="line-169"></a> <span class='hs-varid'>test_result</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>test</span> <span class='hs-comment'>-- execute test on repo</span>
<a name="line-170"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>test_result</span> <span class='hs-keyword'>of</span>
<a name="line-171"></a> <span class='hs-conid'>ExitSuccess</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>trackNextBisect</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-varid'>dnow</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-varid'>dtotal</span><span class='hs-layout'>)</span> <span class='hs-varid'>test</span> <span class='hs-conid'>BisectLeft</span> <span class='hs-varid'>l</span> <span class='hs-comment'>-- continue left (to the present)</span>
<a name="line-172"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>trackNextBisect</span> <span class='hs-varid'>opts</span> <span class='hs-layout'>(</span><span class='hs-varid'>dnow</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-varid'>dtotal</span><span class='hs-layout'>)</span> <span class='hs-varid'>test</span> <span class='hs-conid'>BisectRight</span> <span class='hs-varid'>r</span> <span class='hs-comment'>-- continue right (to the past)</span>
<a name="line-173"></a><span class='hs-definition'>trackNextBisect</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Leaf</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-174"></a> <span class='hs-varid'>putStrLn</span> <span class='hs-layout'>(</span><span class='hs-str'>"Last recent patch that fails the test (assuming monotony in the given range):"</span><span class='hs-layout'>)</span>
<a name="line-175"></a> <span class='hs-varid'>putDocLn</span> <span class='hs-layout'>(</span><span class='hs-varid'>description</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-176"></a>
<a name="line-177"></a><a name="jumpHalfOnRight"></a><span class='hs-definition'>jumpHalfOnRight</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsHunk</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conflict</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchTree</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'>IO</span> <span class='hs-conid'>()</span>
<a name="line-178"></a><span class='hs-definition'>jumpHalfOnRight</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unapplyRL</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>>></span> <span class='hs-varid'>makeScriptsExecutable</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>ps</span>
<a name="line-179"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>patchTree2RL</span> <span class='hs-varid'>l</span>
<a name="line-180"></a>
<a name="line-181"></a><a name="jumpHalfOnLeft"></a><span class='hs-definition'>jumpHalfOnLeft</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsHunk</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Conflict</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>PatchListFormat</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Patchy</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PatchTree</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'>IO</span> <span class='hs-conid'>()</span>
<a name="line-182"></a><span class='hs-definition'>jumpHalfOnLeft</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applyRL</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>></span> <span class='hs-varid'>makeScriptsExecutable</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>p</span>
<a name="line-183"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>patchTree2RL</span> <span class='hs-varid'>r</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="applyRL"></a><span class='hs-definition'>applyRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ShowPatch</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Apply</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-186"></a><span class='hs-definition'>applyRL</span> <span class='hs-varid'>patches</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sequence_</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapFL</span> <span class='hs-varid'>safeApply</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverseRL</span> <span class='hs-varop'>$</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="unapplyRL"></a><span class='hs-definition'>unapplyRL</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ShowPatch</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Apply</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>RL</span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-189"></a><span class='hs-definition'>unapplyRL</span> <span class='hs-varid'>patches</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sequence_</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>safeApply</span> <span class='hs-varop'>.</span> <span class='hs-varid'>invert</span><span class='hs-layout'>)</span> <span class='hs-varid'>patches</span><span class='hs-layout'>)</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="safeApply"></a><span class='hs-definition'>safeApply</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Invert</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ShowPatch</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Apply</span> <span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>ApplyMonad</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ApplyState</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>p</span> <span class='hs-conid'>C</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-192"></a><span class='hs-definition'>safeApply</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>apply</span> <span class='hs-varid'>p</span> <span class='hs-varop'>`catch`</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>msg</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-layout'>(</span><span class='hs-str'>"Bad patch (during trackdown --bisect):\n"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>msg</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-193"></a>
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