c0e9891246
* src/tgbaalgos/randomize.cc, src/tgbaalgos/randomize.hh: New files. * src/tgbaalgos/Makefile.am: Add them. * src/graph/graph.hh (rename_states_): New method. * src/bin/autfilt.cc: Add options --randomize and --seed. * src/tgbatest/randomize.test: Test them. * src/tgbatest/Makefile.am: Add randomize.test. * NEWS: Mention randomize().
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2014 Laboratoire de Recherche et Développement de
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// l'Epita (LRDE).
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include <algorithm>
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#include <numeric>
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#include "randomize.hh"
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#include "misc/random.hh"
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namespace spot
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{
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SPOT_API void
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randomize(tgba_digraph_ptr& aut, bool randomize_states,
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bool randomize_transitions)
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{
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if (!randomize_states && !randomize_transitions)
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return;
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auto& g = aut->get_graph();
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if (randomize_states)
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{
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unsigned n = g.num_states();
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std::vector<unsigned> nums(n);
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std::iota(nums.begin(), nums.end(), 0);
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std::random_shuffle(nums.begin(), nums.end(), spot::mrand);
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g.rename_states_(nums);
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aut->set_init_state(nums[aut->get_init_state_number()]);
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}
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if (randomize_transitions)
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{
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auto begin = g.transitions().begin() + 1;
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auto end = g.transitions().end();
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std::random_shuffle(begin, end, spot::mrand);
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}
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typedef tgba_digraph::graph_t::trans_storage_t tr_t;
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g.sort_transitions_([](const tr_t& lhs, const tr_t& rhs)
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{ return lhs.src < rhs.src; });
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g.chain_transitions_();
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}
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}
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