LimitedWarning.hh

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00001 //STARTHEADER
00002 // $Id: LimitedWarning.hh 699 2007-06-04 20:20:42Z salam $
00003 //
00004 // Copyright (c) 2005-2006, Matteo Cacciari and Gavin Salam
00005 //
00006 //----------------------------------------------------------------------
00007 // This file is part of FastJet.
00008 //
00009 //  FastJet is free software; you can redistribute it and/or modify
00010 //  it under the terms of the GNU General Public License as published by
00011 //  the Free Software Foundation; either version 2 of the License, or
00012 //  (at your option) any later version.
00013 //
00014 //  The algorithms that underlie FastJet have required considerable
00015 //  development and are described in hep-ph/0512210. If you use
00016 //  FastJet as part of work towards a scientific publication, please
00017 //  include a citation to the FastJet paper.
00018 //
00019 //  FastJet is distributed in the hope that it will be useful,
00020 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
00021 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00022 //  GNU General Public License for more details.
00023 //
00024 //  You should have received a copy of the GNU General Public License
00025 //  along with FastJet; if not, write to the Free Software
00026 //  Foundation, Inc.:
00027 //      59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00028 //----------------------------------------------------------------------
00029 //ENDHEADER
00030 
00031 
00032 #ifndef __FASTJET_LIMITEDWARNING_HH__
00033 #define __FASTJET_LIMITEDWARNING_HH__
00034 
00035 #include<iostream>
00036 #include<string>
00037 
00040 class LimitedWarning {
00041 public:
00042   
00044   LimitedWarning() : _max_warn(_max_warn_default), _n_warn_so_far(0) {}
00045 
00047   LimitedWarning(int max_warn) : _max_warn(max_warn), _n_warn_so_far(0) {}
00048 
00050   void warn(const std::string & warning, std::ostream & ostr = std::cerr) {
00051     if (_n_warn_so_far < _max_warn) {
00052       ostr << "WARNING: ";
00053       ostr << warning;
00054       _n_warn_so_far++;
00055       if (_n_warn_so_far == _max_warn) ostr << " (LAST SUCH WARNING)";
00056       ostr << std::endl;
00057     }
00058   }
00059 
00060 private:
00061   int _max_warn, _n_warn_so_far;
00062   static const int _max_warn_default = 5;
00063   
00064 };
00065 
00066 #endif // __FASTJET_LIMITEDWARNING_HH__

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