814ec7c2d0
* src/misc/hash.hh (ptr_hash): Use knuth32_hash. * src/tgba/tgbabddconcretefactory.hh (tgba_bdd_concrete_factory): Use ltl::formula_ptr_hash for acc_map_.
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
// Copyright (C) 2003, 2004, 2005 Laboratoire d'Informatique de Paris 6 (LIP6),
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// département Systèmes Répartis Coopératifs (SRC), Université Pierre
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// et Marie Curie.
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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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#ifndef SPOT_MISC_HASH_HH
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# define SPOT_MISC_HASH_HH
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# include <string>
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# include <functional>
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# include "hashfunc.hh"
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// See the G++ FAQ for details about the following.
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# ifdef __GNUC__
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# if __GNUC__ < 3
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# include <hash_map.h>
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# include <hash_set.h>
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namespace Sgi
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{ // inherit globals
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using ::hash_map;
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using ::hash_set;
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using ::hash;
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};
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# else
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# include <ext/hash_map>
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# include <ext/hash_set>
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# if __GNUC_MINOR__ == 0
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namespace Sgi = std; // GCC 3.0
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# else
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namespace Sgi = ::__gnu_cxx; // GCC 3.1 and later
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# endif
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# endif
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# else // ... there are other compilers, right?
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# include <hash_map>
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# include <hash_set>
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namespace Sgi = std;
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# endif
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namespace spot
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{
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/// \brief A hash function for pointers.
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/// \ingroup hash_funcs
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template <class T>
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struct ptr_hash :
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public std::unary_function<const T*, size_t>
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{
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size_t operator()(const T* p) const
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{
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return knuth32_hash(reinterpret_cast<const char*>(p)
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- static_cast<const char*>(0));
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}
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};
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/// \brief A hash function for strings.
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/// \ingroup hash_funcs
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struct string_hash :
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public Sgi::hash<const char*>,
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public std::unary_function<const std::string&, size_t>
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{
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size_t operator()(const std::string& s) const
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{
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// We are living dangerously. Be sure to call operator()
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// from the super-class, not this one.
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return Sgi::hash<const char*>::operator()(s.c_str());
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}
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};
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}
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#endif // SPOT_MISC_HASH_HH
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