include/EvtGenBase/EvtPointPred.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
0006 *                                                                      *
0007 * EvtGen is free software: you can redistribute it and/or modify       *
0008 * it under the terms of the GNU General Public License as published by *
0009 * the Free Software Foundation, either version 3 of the License, or    *
0010 * (at your option) any later version.                                  *
0011 *                                                                      *
0012 * EvtGen is distributed in the hope that it will be useful,            *
0013 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
0014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
0015 * GNU General Public License for more details.                         *
0016 *                                                                      *
0017 * You should have received a copy of the GNU General Public License    *
0018 * along with EvtGen.  If not, see <https://www.gnu.org/licenses/>.     *
0019 ***********************************************************************/
0020
0021 #ifndef EVT_POINT_PRED_HH
0022 #define EVT_POINT_PRED_HH
0023
0024 // Predicate testing validity of a point. The point class must provide
0025 // bool isValid() method
0026
0027 template <class Point>
0028 class EvtPointPred {
0029   public:
0030     typedef Point argument_type;
0031     typedef bool result_type;
0032
0033     EvtPointPred() {}
0034     EvtPointPred( const EvtPointPred& ) {}
0035     ~EvtPointPred() {}
0036
0037     result_type operator()( argument_type x ) { return x.isValid(); }
0038 };