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370be031 | 1 | //STARTHEADER |
2 | // $Id: LimitedWarning.hh 699 2007-06-04 20:20:42Z salam $ | |
3 | // | |
4 | // Copyright (c) 2005-2006, Matteo Cacciari and Gavin Salam | |
5 | // | |
6 | //---------------------------------------------------------------------- | |
7 | // This file is part of FastJet. | |
8 | // | |
9 | // FastJet is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; either version 2 of the License, or | |
12 | // (at your option) any later version. | |
13 | // | |
14 | // The algorithms that underlie FastJet have required considerable | |
15 | // development and are described in hep-ph/0512210. If you use | |
16 | // FastJet as part of work towards a scientific publication, please | |
17 | // include a citation to the FastJet paper. | |
18 | // | |
19 | // FastJet is distributed in the hope that it will be useful, | |
20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | // GNU General Public License for more details. | |
23 | // | |
24 | // You should have received a copy of the GNU General Public License | |
25 | // along with FastJet; if not, write to the Free Software | |
26 | // Foundation, Inc.: | |
27 | // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | //---------------------------------------------------------------------- | |
29 | //ENDHEADER | |
30 | ||
31 | ||
32 | #ifndef __FASTJET_LIMITEDWARNING_HH__ | |
33 | #define __FASTJET_LIMITEDWARNING_HH__ | |
34 | ||
35 | #include<iostream> | |
36 | #include<string> | |
37 | ||
38 | /// class to provide facilities for giving warnings up to some maximum | |
39 | /// number of times | |
40 | class LimitedWarning { | |
41 | public: | |
42 | ||
43 | /// constructor that provides a default maximum number of warnings | |
44 | LimitedWarning() : _max_warn(_max_warn_default), _n_warn_so_far(0) {} | |
45 | ||
46 | /// constructor that provides a used-set max number of warnings | |
47 | LimitedWarning(int max_warn) : _max_warn(max_warn), _n_warn_so_far(0) {} | |
48 | ||
49 | /// output a warning to ostr | |
50 | void warn(const std::string & warning, std::ostream & ostr = std::cerr) { | |
51 | if (_n_warn_so_far < _max_warn) { | |
52 | ostr << "WARNING: "; | |
53 | ostr << warning; | |
54 | _n_warn_so_far++; | |
55 | if (_n_warn_so_far == _max_warn) ostr << " (LAST SUCH WARNING)"; | |
56 | ostr << std::endl; | |
57 | } | |
58 | } | |
59 | ||
60 | private: | |
61 | int _max_warn, _n_warn_so_far; | |
62 | static const int _max_warn_default = 5; | |
63 | ||
64 | }; | |
65 | ||
66 | #endif // __FASTJET_LIMITEDWARNING_HH__ |