| 1 | //STARTHEADER
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| 2 | // $Id: LimitedWarning.hh,v 1.1 2008-11-06 14:32:09 ovyn Exp $
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| 3 | //
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| 4 | // Copyright (c) 2005-2006, Matteo Cacciari and Gavin Salam
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| 5 | //
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| 6 | //----------------------------------------------------------------------
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| 7 | // This file is part of FastJet.
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| 8 | //
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| 9 | // FastJet is free software; you can redistribute it and/or modify
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| 10 | // it under the terms of the GNU General Public License as published by
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| 11 | // the Free Software Foundation; either version 2 of the License, or
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| 12 | // (at your option) any later version.
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| 13 | //
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| 14 | // The algorithms that underlie FastJet have required considerable
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| 15 | // development and are described in hep-ph/0512210. If you use
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| 16 | // FastJet as part of work towards a scientific publication, please
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| 17 | // include a citation to the FastJet paper.
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| 18 | //
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| 19 | // FastJet is distributed in the hope that it will be useful,
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| 20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 22 | // GNU General Public License for more details.
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| 23 | //
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| 24 | // You should have received a copy of the GNU General Public License
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| 25 | // along with FastJet; if not, write to the Free Software
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| 26 | // Foundation, Inc.:
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| 27 | // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 28 | //----------------------------------------------------------------------
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| 29 | //ENDHEADER
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| 30 |
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| 31 |
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| 32 | #ifndef __FASTJET_LIMITEDWARNING_HH__
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| 33 | #define __FASTJET_LIMITEDWARNING_HH__
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| 34 |
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| 35 | #include<iostream>
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| 36 | #include<string>
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| 37 |
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| 38 | /// class to provide facilities for giving warnings up to some maximum
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| 39 | /// number of times
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| 40 | class LimitedWarning {
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| 41 | public:
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| 42 |
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| 43 | /// constructor that provides a default maximum number of warnings
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| 44 | LimitedWarning() : _max_warn(_max_warn_default), _n_warn_so_far(0) {}
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| 45 |
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| 46 | /// constructor that provides a used-set max number of warnings
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| 47 | LimitedWarning(int max_warn) : _max_warn(max_warn), _n_warn_so_far(0) {}
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| 48 |
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| 49 | /// output a warning to ostr
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| 50 | void warn(const std::string & warning, std::ostream & ostr = std::cerr) {
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| 51 | if (_n_warn_so_far < _max_warn) {
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| 52 | ostr << "WARNING: ";
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| 53 | ostr << warning;
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| 54 | _n_warn_so_far++;
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| 55 | if (_n_warn_so_far == _max_warn) ostr << " (LAST SUCH WARNING)";
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| 56 | ostr << std::endl;
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | private:
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| 61 | int _max_warn, _n_warn_so_far;
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| 62 | static const int _max_warn_default = 5;
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| 63 |
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| 64 | };
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| 65 |
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| 66 | #endif // __FASTJET_LIMITEDWARNING_HH__
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