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/* This file is part of the FaCT++ DL reasoner
Copyright (C) 2011-2015 Dmitry Tsarkov and The University of Manchester
Copyright (C) 2015-2016 Dmitry Tsarkov
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef TDAG2INTERFACE_H
#define TDAG2INTERFACE_H
#include "tDLExpression.h"
#include "tExpressionManager.h"
#include "dlDag.h"
/// class to translate DAG entities into the TDL* expressions
class TDag2Interface
{
protected: // members
/// DAG to be translated
const DLDag& Dag;
/// expression manager
TExpressionManager* Manager;
/// vector of cached concept expressions
std::vector<const TDLConceptExpression*> TransC;
/// vector of cached data expressions
std::vector<const TDLDataExpression*> TransD;
protected: // methods
/// build concept expression by a vertex V
const TDLConceptExpression* buildCExpr ( const DLVertex& v );
/// build data expression by a vertex V
const TDLDataExpression* buildDExpr ( const DLVertex& v );
/// create concept name by named entry
static const TDLConceptName* CName ( const TNamedEntry* p ) { return dynamic_cast<const TDLConceptName*>(p->getEntity()); }
/// create individual name by named entry
static const TDLIndividualName* IName ( const TNamedEntry* p ) { return dynamic_cast<const TDLIndividualName*>(p->getEntity()); }
/// create object role name by named entry
static const TDLObjectRoleName* ORName ( const TNamedEntry* p ) { return dynamic_cast<const TDLObjectRoleName*>(p->getEntity()); }
/// create data role name by named entry
static const TDLDataRoleName* DRName ( const TNamedEntry* p ) { return dynamic_cast<const TDLDataRoleName*>(p->getEntity()); }
public: // interface
/// init c'tor
TDag2Interface ( const DLDag& dag, TExpressionManager* manager )
: Dag(dag)
, Manager(manager)
, TransC(dag.size(),NULL)
, TransD(dag.size(),NULL)
{}
/// empty d'tor: every newly created thing will be destroyed by manager
~TDag2Interface ( void ) {}
/// make sure that size of expression cache is the same as the size of a DAG
void ensureDagSize ( void )
{
size_t ds = Dag.size(), ts = TransC.size();
if ( likely(ds == ts) )
return;
TransC.resize(ds);
TransD.resize(ds);
if ( unlikely(ds>ts) )
for ( ; ts != ds; ++ts )
{
TransC[ts] = NULL;
TransD[ts] = NULL;
}
}
/// get concept expression corresponding index of vertex
const TDLConceptExpression* getCExpr ( BipolarPointer p )
{
if ( isNegative(p) )
return Manager->Not(getCExpr(inverse(p)));
unsigned int i = (unsigned int)p;
if ( TransC[i] == NULL )
TransC[i] = buildCExpr(Dag[p]);
return TransC[i];
}
/// get data expression corresponding index of vertex
const TDLDataExpression* getDExpr ( BipolarPointer p )
{
if ( isNegative(p) )
return Manager->DataNot(getDExpr(inverse(p)));
unsigned int i = (unsigned int)p;
if ( TransD[i] == NULL )
TransD[i] = buildDExpr(Dag[p]);
return TransD[i];
}
/// get expression corresponding index of vertex given the DATA flag
const TDLExpression* getExpr ( BipolarPointer p, bool data )
{
if ( data )
return getDExpr(p);
else
return getCExpr(p);
}
}; // TDag2Interface
#endif
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