d9dc1f489d
* src/ltlvisit/relabel.cc, src/ltlvisit/relabel.hh: New files. * src/ltlvisit/Makefile.am: Add them. * src/ltlvisit/clone.cc (recurse): Don't call clone(), nobody needs that. Instead, really recurse. * src/bin/ltlfilt.cc: Add a --relabel option. * src/bin/genltl.cc: Relabel formulas if --lbt is used. * src/sanity/style.test: Tweak detection of i++.
118 lines
2.4 KiB
C++
118 lines
2.4 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2012 Laboratoire de Recherche et
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// Développement de 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 2 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 Spot; see the file COPYING. If not, write to the Free
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// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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#include <relabel.hh>
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#include <sstream>
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#include "clone.hh"
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#include "misc/hash.hh"
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#include "ltlenv/defaultenv.hh"
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namespace spot
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{
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namespace ltl
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{
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namespace
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{
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class relabeler: public clone_visitor
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{
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public:
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typedef Sgi::hash_map<const atomic_prop*, const formula*,
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ptr_hash<atomic_prop> > map;
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map newname;
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void
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visit(const atomic_prop* ap)
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{
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map::const_iterator it = newname.find(ap);
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if (it != newname.end())
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result_ = it->second->clone();
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else
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newname[ap] = result_ = next();
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}
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virtual const formula* next() = 0;
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};
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class relabeler_pnn: public relabeler
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{
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public:
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relabeler_pnn()
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: nn(0)
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{
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}
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unsigned nn;
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const formula* next()
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{
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std::ostringstream s;
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s << "p" << nn++;
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return default_environment::instance().require(s.str());
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}
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};
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class relabeler_abc: public relabeler
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{
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public:
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relabeler_abc()
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: nn(0)
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{
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}
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unsigned nn;
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const formula* next()
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{
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std::string s;
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unsigned n = nn++;
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do
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{
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s.push_back('a' + (n % 26));
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n /= 26;
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}
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while (n);
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return default_environment::instance().require(s);
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}
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};
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}
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const formula*
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relabel(const formula* f, relabeling_style style)
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{
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relabeler* rel = 0;
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switch (style)
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{
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case Pnn:
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rel = new relabeler_pnn;
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break;
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case Abc:
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rel = new relabeler_abc;
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break;
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}
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f->accept(*rel);
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const formula* res = rel->result();
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delete rel;
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return res;
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}
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}
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}
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