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sym-obj.cpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christopher Mears <chris.mears@monash.edu>
00005  *
00006  *  Copyright:
00007  *     Christopher Mears, 2012
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/int/ldsb.hh>
00035 
00036 namespace Gecode {
00037   SymmetryHandle::SymmetryHandle(void)
00038     : ref(NULL) {}
00039   SymmetryHandle::SymmetryHandle(Int::LDSB::SymmetryObject* o)
00040     : ref(o) {}
00041   SymmetryHandle::SymmetryHandle(const SymmetryHandle& h)
00042     : ref(h.ref) {
00043     if (ref != NULL)
00044       increment();
00045   }
00046   const SymmetryHandle&
00047   SymmetryHandle::operator=(const SymmetryHandle& h) {
00048     if (h.ref == ref)
00049       return *this;
00050     if (ref != NULL)
00051       decrement();
00052     ref = h.ref;
00053     if (ref != NULL)
00054       increment();
00055     return *this;
00056   }
00057   SymmetryHandle::~SymmetryHandle(void) {
00058     if (ref != NULL)
00059       decrement();
00060   }
00061   void
00062   SymmetryHandle::increment(void) {
00063     (ref->nrefs)++;
00064   }
00065   void
00066   SymmetryHandle::decrement(void) {
00067     (ref->nrefs)--;
00068     if (ref->nrefs == 0)
00069       delete ref;
00070     ref = NULL;
00071   }
00072 }
00073 
00074 namespace Gecode { namespace Int { namespace LDSB {
00075 
00076   SymmetryObject::SymmetryObject(void)
00077     : nrefs(1) {}
00078   SymmetryObject::~SymmetryObject(void) {}
00079 
00080   VariableSymmetryObject::VariableSymmetryObject(ArgArray<VarImpBase*> vars) {
00081     nxs = vars.size();
00082     xs = new VarImpBase*[nxs];
00083     for (int i = 0 ; i < nxs ; i++)
00084       xs[i] = vars[i];
00085   }
00086   VariableSymmetryObject::~VariableSymmetryObject(void) {
00087     delete [] xs;
00088   }
00089 
00090   ValueSymmetryObject::ValueSymmetryObject(IntSet vs)
00091     : values(vs) {}
00092 
00093   VariableSequenceSymmetryObject::
00094   VariableSequenceSymmetryObject(ArgArray<VarImpBase*> x, int ss)
00095     : seq_size(ss) {
00096     nxs = x.size();
00097     xs = new VarImpBase*[nxs];
00098     for (int i = 0 ; i < nxs ; i++)
00099       xs[i] = x[i];
00100   }
00101   VariableSequenceSymmetryObject::~VariableSequenceSymmetryObject(void) {
00102     delete [] xs;
00103   }
00104 
00105   ValueSequenceSymmetryObject::ValueSequenceSymmetryObject(IntArgs vs, int ss)
00106       : values(vs), seq_size(ss) {}
00107 
00108 }}}
00109 
00110 // STATISTICS: int-branch