spot/spot/twaalgos/randomize.cc
Alexandre Duret-Lutz fefb375d5f is_alternating() -> !is_existential()
Part of #212.

* spot/misc/common.hh (SPOT_DEPRECATED): Improve support current
compilers and options flags.
* spot/twa/twagraph.hh, spot/graph/graph.hh (is_alternating): Mark it
as deprecated.
(is_existential): New method.
* bin/autfilt.cc, bin/ltlcross.cc, spot/parseaut/parseaut.yy,
spot/twa/twa.cc, spot/twa/twagraph.cc, spot/twaalgos/alternation.cc,
spot/twaalgos/are_isomorphic.cc, spot/twaalgos/canonicalize.cc,
spot/twaalgos/couvreurnew.cc, spot/twaalgos/cycles.cc,
spot/twaalgos/degen.cc, spot/twaalgos/determinize.cc,
spot/twaalgos/dot.cc, spot/twaalgos/dtbasat.cc,
spot/twaalgos/dtwasat.cc, spot/twaalgos/hoa.cc,
spot/twaalgos/isunamb.cc, spot/twaalgos/isweakscc.cc,
spot/twaalgos/mask.hh, spot/twaalgos/minimize.cc,
spot/twaalgos/postproc.cc, spot/twaalgos/product.cc,
spot/twaalgos/randomize.cc, spot/twaalgos/remfin.cc,
spot/twaalgos/sbacc.cc, spot/twaalgos/sccfilter.cc,
spot/twaalgos/sccinfo.cc, spot/twaalgos/simulation.cc,
spot/twaalgos/strength.cc, tests/core/graph.cc, tests/core/ngraph.cc,
tests/python/alternating.py: Adjust all uses.
* NEWS: Mention the renaming.
2017-02-12 15:56:02 +01:00

78 lines
2.6 KiB
C++

// -*- coding: utf-8 -*-
// Copyright (C) 2014-2017 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <algorithm>
#include <numeric>
#include <random>
#include <spot/twaalgos/randomize.hh>
#include <spot/misc/random.hh>
namespace spot
{
void
randomize(twa_graph_ptr& aut, bool randomize_states,
bool randomize_edges)
{
if (!aut->is_existential())
throw std::runtime_error
("randomize() does not yet support alternation");
if (!randomize_states && !randomize_edges)
return;
auto& g = aut->get_graph();
if (randomize_states)
{
unsigned n = g.num_states();
std::vector<unsigned> nums(n);
std::iota(nums.begin(), nums.end(), 0);
mrandom_shuffle(nums.begin(), nums.end());
g.rename_states_(nums);
aut->set_init_state(nums[aut->get_init_state_number()]);
if (auto sn =
aut->get_named_prop<std::vector<std::string>>("state-names"))
{
unsigned sns = sn->size(); // Might be != n.
auto nn = new std::vector<std::string>(n);
for (unsigned i = 0; i < sns && i < n; ++i)
(*nn)[nums[i]] = (*sn)[i];
aut->set_named_prop("state-names", nn);
}
if (auto hs = aut->get_named_prop<std::map<unsigned, unsigned>>
("highlight-states"))
{
std::map<unsigned, unsigned> hs2;
for (auto p: *hs)
hs2[nums[p.first]] = p.second;
std::swap(*hs, hs2);
}
}
if (randomize_edges)
{
g.remove_dead_edges_();
auto& v = g.edge_vector();
mrandom_shuffle(v.begin() + 1, v.end());
}
aut->set_named_prop("highlight-edges", nullptr);
typedef twa_graph::graph_t::edge_storage_t tr_t;
g.sort_edges_([](const tr_t& lhs, const tr_t& rhs)
{ return lhs.src < rhs.src; });
g.chain_edges_();
}
}