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yap-6.3/packages/bee/cryptominisat-2.5.1/Solver/VarReplacer.h
Vitor Santos Costa 16015bd8e6 bee
2019-04-22 12:15:21 +01:00

148 lines
4.4 KiB
C++
Executable File

/***********************************************************************************
CryptoMiniSat -- Copyright (c) 2009 Mate Soos
This program 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.
This program 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/>.
**************************************************************************************************/
#ifndef VARREPLACER_H
#define VARREPLACER_H
#ifdef _MSC_VER
#include <msvc/stdint.h>
#else
#include <stdint.h>
#endif //_MSC_VER
#include <map>
#include <vector>
using std::map;
using std::vector;
#include "Solver.h"
#include "SolverTypes.h"
#include "Clause.h"
#include "Vec.h"
class VarReplacer
{
public:
VarReplacer(Solver& solver);
~VarReplacer();
const bool performReplace(const bool always = false);
const bool needsReplace();
template<class T>
const bool replace(T& ps, const bool xor_clause_inverted, const uint group);
void extendModelPossible() const;
void extendModelImpossible(Solver& solver2) const;
void reattachInternalClauses();
const uint getNumReplacedLits() const;
const uint getNumReplacedVars() const;
const uint getNumLastReplacedVars() const;
const uint getNewToReplaceVars() const;
const uint32_t getNumTrees() const;
const vector<Var> getReplacingVars() const;
const vector<Lit>& getReplaceTable() const;
const vec<Clause*>& getClauses() const;
const bool varHasBeenReplaced(const Var var) const;
const bool replacingVar(const Var var) const;
void newVar();
private:
const bool performReplaceInternal();
const bool replace_set(vec<Clause*>& cs, const bool binClauses);
const bool replace_set(vec<XorClause*>& cs);
const bool handleUpdatedClause(Clause& c, const Lit origLit1, const Lit origLit2);
const bool handleUpdatedClause(XorClause& c, const Var origVar1, const Var origVar2);
template<class T>
void addBinaryXorClause(T& ps, const bool xor_clause_inverted, const uint group, const bool internal = false);
void setAllThatPointsHereTo(const Var var, const Lit lit);
// bool alreadyIn(const Var var, const Lit lit);
vector<Lit> table;
map<Var, vector<Var> > reverseTable;
vec<Clause*> clauses;
uint replacedLits;
uint replacedVars;
uint lastReplacedVars;
Solver& solver;
};
inline const bool VarReplacer::performReplace(const bool always)
{
//uint32_t limit = std::min((uint32_t)((double)solver.order_heap.size()*PERCENTAGEPERFORMREPLACE), FIXCLEANREPLACE);
uint32_t limit = (uint32_t)((double)solver.order_heap.size()*PERCENTAGEPERFORMREPLACE);
if ((always && getNewToReplaceVars() > 0) || getNewToReplaceVars() > limit)
return performReplaceInternal();
return true;
}
inline const bool VarReplacer::needsReplace()
{
uint32_t limit = (uint32_t)((double)solver.order_heap.size()*PERCENTAGEPERFORMREPLACE);
return (getNewToReplaceVars() > limit);
}
inline const uint VarReplacer::getNumReplacedLits() const
{
return replacedLits;
}
inline const uint VarReplacer::getNumReplacedVars() const
{
return replacedVars;
}
inline const uint VarReplacer::getNumLastReplacedVars() const
{
return lastReplacedVars;
}
inline const uint VarReplacer::getNewToReplaceVars() const
{
return replacedVars-lastReplacedVars;
}
inline const vector<Lit>& VarReplacer::getReplaceTable() const
{
return table;
}
inline const vec<Clause*>& VarReplacer::getClauses() const
{
return clauses;
}
inline const bool VarReplacer::varHasBeenReplaced(const Var var) const
{
return table[var].var() != var;
}
inline const bool VarReplacer::replacingVar(const Var var) const
{
return (reverseTable.find(var) != reverseTable.end());
}
inline const uint32_t VarReplacer::getNumTrees() const
{
return reverseTable.size();
}
#endif //VARREPLACER_H