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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2003 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, EmptyDataDecls #-}</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'>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-conid'>Origin</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>progressPatchSet</span><span class='hs-layout'>,</span> <span class='hs-varid'>tags</span><span class='hs-layout'>,</span> <span class='hs-varid'>appendPSFL</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>newset2RL</span><span class='hs-layout'>,</span> <span class='hs-varid'>newset2FL</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Progress</span> <span class='hs-layout'>(</span> <span class='hs-varid'>progress</span> <span class='hs-layout'>)</span>
<a name="line-27"></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>
<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-conid'>PatchInfoAnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>info</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'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Ordered</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FL</span><span class='hs-layout'>,</span> <span class='hs-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-varop'>+<+</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverseFL</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>reverseRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL_RL</span><span class='hs-layout'>,</span> <span class='hs-varid'>concatRL</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRL</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'>Sealed</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Sealed</span> <span class='hs-layout'>)</span>
<a name="line-32"></a>
<a name="line-33"></a><a name="Origin"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Origin</span>
<a name="line-34"></a>
<a name="line-35"></a><a name="SealedPatchSet"></a><span class='hs-keyword'>type</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-conid'>Sealed</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</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-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="PatchSet"></a><span class='hs-comment'>-- A PatchSet is a list of patches since the last tag, and a list of tagged</span>
<a name="line-38"></a><a name="PatchSet"></a><span class='hs-comment'>-- patch lists that form a repo's history.</span>
<a name="line-39"></a><a name="PatchSet"></a><span class='hs-keyword'>data</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-keyword'>where</span>
<a name="line-40"></a> <span class='hs-conid'>PatchSet</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> <span class='hs-keyglyph'>-></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'>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-41"></a>
<a name="line-42"></a><a name="Tagged"></a><span class='hs-comment'>-- A Tagged is a Tag, the hash of the 'previous' inventory (if it exists) and</span>
<a name="line-43"></a><a name="Tagged"></a><span class='hs-comment'>-- the list of patches since that previous inventory.</span>
<a name="line-44"></a><a name="Tagged"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Tagged</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> <span class='hs-keyword'>where</span>
<a name="line-45"></a> <span class='hs-conid'>Tagged</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'>Maybe</span> <span class='hs-conid'>String</span>
<a name="line-46"></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'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tagged</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-47"></a>
<a name="line-48"></a><a name="newset2RL"></a><span class='hs-comment'>-- |newset2RL takes a PatchSet and returns an equivalent, linear RL of patches.</span>
<a name="line-49"></a><span class='hs-definition'>newset2RL</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'>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'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-50"></a><span class='hs-definition'>newset2RL</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-varid'>ps</span> <span class='hs-varop'>+<+</span> <span class='hs-varid'>concatRL</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL_RL</span> <span class='hs-varid'>ts2rl</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-51"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>ts2rl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tagged</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'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-52"></a> <span class='hs-varid'>ts2rl</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'>ps2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span> <span class='hs-conop'>:<:</span> <span class='hs-varid'>ps2</span>
<a name="line-53"></a>
<a name="line-54"></a><a name="newset2FL"></a><span class='hs-comment'>-- |newset2FL takes a PatchSet and returns an equivalent, linear FL of patches.</span>
<a name="line-55"></a><span class='hs-definition'>newset2FL</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'>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'>start</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-56"></a><span class='hs-definition'>newset2FL</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverseRL</span> <span class='hs-varop'>.</span> <span class='hs-varid'>newset2RL</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="appendPSFL"></a><span class='hs-comment'>-- |appendPSFL takes a PatchSet and a FL of patches that 'follow' the PatchSet,</span>
<a name="line-59"></a><span class='hs-comment'>-- and concatenates the patches into the PatchSet.</span>
<a name="line-60"></a><span class='hs-definition'>appendPSFL</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'>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-61"></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>
<a name="line-62"></a><span class='hs-definition'>appendPSFL</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-varid'>newps</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'>newps</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-63"></a>
<a name="line-64"></a><a name="progressPatchSet"></a><span class='hs-comment'>-- |Runs a progress action for each tag and patch in a given PatchSet, using</span>
<a name="line-65"></a><span class='hs-comment'>-- the passed progress message. Does not alter the PatchSet.</span>
<a name="line-66"></a><span class='hs-definition'>progressPatchSet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</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-67"></a><span class='hs-definition'>progressPatchSet</span> <span class='hs-varid'>k</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-conid'>PatchSet</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL_RL</span> <span class='hs-varid'>prog</span> <span class='hs-varid'>ps0</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapRL_RL</span> <span class='hs-varid'>pts</span> <span class='hs-varid'>ts0</span>
<a name="line-68"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>prog</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>progress</span> <span class='hs-varid'>k</span>
<a name="line-69"></a> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tagged</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'>Tagged</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>
<a name="line-70"></a> <span class='hs-varid'>pts</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'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Tagged</span> <span class='hs-layout'>(</span><span class='hs-varid'>prog</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varid'>h</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapRL_RL</span> <span class='hs-varid'>prog</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span>
<a name="line-71"></a>
<a name="line-72"></a><a name="tags"></a><span class='hs-comment'>-- |tags returns the PatchInfos corresponding to the tags of a given PatchSet.</span>
<a name="line-73"></a><span class='hs-definition'>tags</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-74"></a><span class='hs-definition'>tags</span> <span class='hs-layout'>(</span><span class='hs-conid'>PatchSet</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapRL</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ts</span>
<a name="line-75"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tagged</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'>PatchInfo</span>
<a name="line-76"></a> <span class='hs-varid'>f</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-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>info</span> <span class='hs-varid'>t</span>
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