[1847] | 1 | /* -*- C++ -*- |
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| 2 | * lemon/counter.h - |
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| 3 | * Part of LEMON, a generic C++ optimization library |
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| 4 | * |
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[1875] | 5 | * Copyright (C) 2006 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[1847] | 6 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 7 | * |
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| 8 | * Permission to use, modify and distribute this software is granted |
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| 9 | * provided that this copyright notice appears in all copies. For |
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| 10 | * precise terms see the accompanying LICENSE file. |
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| 11 | * |
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| 12 | * This software is provided "AS IS" with no warranty of any kind, |
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| 13 | * express or implied, and with no claim as to its suitability for any |
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| 14 | * purpose. |
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| 15 | * |
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| 16 | */ |
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| 17 | |
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| 18 | #ifndef LEMON_COUNTER_H |
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| 19 | #define LEMON_COUNTER_H |
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| 20 | |
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| 21 | #include <string> |
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| 22 | #include <iostream> |
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| 23 | |
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| 24 | ///\ingroup timecount |
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| 25 | ///\file |
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| 26 | ///\brief Tools for counting steps and events |
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| 27 | |
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| 28 | namespace lemon |
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| 29 | { |
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| 30 | |
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| 31 | template<class P> class _SubNoCounter; |
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| 32 | |
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| 33 | template<class P> |
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| 34 | class _SubCounter |
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| 35 | { |
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| 36 | P &_parent; |
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| 37 | std::string _title; |
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| 38 | std::ostream &_os; |
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| 39 | int count; |
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| 40 | public: |
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| 41 | |
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| 42 | typedef _SubCounter<_SubCounter<P> > SubCounter; |
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| 43 | typedef _SubNoCounter<_SubCounter<P> > SubNoCounter; |
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| 44 | |
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| 45 | _SubCounter(P &parent) |
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| 46 | : _parent(parent), _title(), _os(std::cerr), count(0) {} |
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| 47 | _SubCounter(P &parent,std::string title,std::ostream &os=std::cerr) |
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| 48 | : _parent(parent), _title(title), _os(os), count(0) {} |
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| 49 | _SubCounter(P &parent,const char *title,std::ostream &os=std::cerr) |
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| 50 | : _parent(parent), _title(title), _os(os), count(0) {} |
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| 51 | ~_SubCounter() { |
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| 52 | _os << _title << count <<std::endl; |
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| 53 | _parent+=count; |
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| 54 | } |
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| 55 | _SubCounter &operator++() { count++; return *this;} |
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| 56 | int operator++(int) { return count++; } |
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| 57 | _SubCounter &operator--() { count--; return *this;} |
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| 58 | int operator--(int) { return count--; } |
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| 59 | _SubCounter &operator+=(int c) { count+=c; return *this;} |
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| 60 | _SubCounter &operator-=(int c) { count-=c; return *this;} |
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| 61 | void reset(int c=0) {count=c;} |
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| 62 | operator int() {return count;} |
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| 63 | }; |
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| 64 | |
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| 65 | template<class P> |
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| 66 | class _SubNoCounter |
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| 67 | { |
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| 68 | P &_parent; |
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| 69 | public: |
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| 70 | typedef _SubNoCounter<_SubNoCounter<P> > SubCounter; |
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| 71 | typedef _SubNoCounter<_SubNoCounter<P> > SubNoCounter; |
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| 72 | |
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| 73 | _SubNoCounter(P &parent) :_parent(parent) {} |
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[1855] | 74 | _SubNoCounter(P &parent,std::string,std::ostream &) |
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[1847] | 75 | :_parent(parent) {} |
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[1855] | 76 | _SubNoCounter(P &parent,std::string) |
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| 77 | :_parent(parent) {} |
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| 78 | _SubNoCounter(P &parent,const char *,std::ostream &) |
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| 79 | :_parent(parent) {} |
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| 80 | _SubNoCounter(P &parent,const char *) |
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[1847] | 81 | :_parent(parent) {} |
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| 82 | ~_SubNoCounter() {} |
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| 83 | _SubNoCounter &operator++() { ++_parent; return *this;} |
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| 84 | int operator++(int) { _parent++; return 0;} |
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| 85 | _SubNoCounter &operator--() { --_parent; return *this;} |
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| 86 | int operator--(int) { _parent--; return 0;} |
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| 87 | _SubNoCounter &operator+=(int c) { _parent+=c; return *this;} |
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| 88 | _SubNoCounter &operator-=(int c) { _parent-=c; return *this;} |
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[1855] | 89 | void reset(int) {} |
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| 90 | void reset() {} |
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[1847] | 91 | operator int() {return 0;} |
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| 92 | }; |
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| 93 | |
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| 94 | |
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| 95 | /// \addtogroup timecount |
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| 96 | /// @{ |
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| 97 | |
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| 98 | ///A counter class |
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| 99 | |
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| 100 | ///This class makes it easier to count certain events. You can increment |
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| 101 | ///or decrement the counter using operator++ and operator--. |
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| 102 | ///A report is automatically printed on destruction. |
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[1851] | 103 | ///\todo More doc |
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[1847] | 104 | class Counter |
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| 105 | { |
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| 106 | std::string _title; |
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| 107 | std::ostream &_os; |
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| 108 | int count; |
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| 109 | public: |
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| 110 | ///\e |
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| 111 | |
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| 112 | ///\todo document please. |
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| 113 | /// |
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| 114 | typedef _SubCounter<Counter> SubCounter; |
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| 115 | ///\e |
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| 116 | |
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| 117 | ///\todo document please. |
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| 118 | /// |
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| 119 | typedef _SubNoCounter<Counter> SubNoCounter; |
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| 120 | |
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| 121 | ///\e |
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| 122 | Counter() : _title(), _os(std::cerr), count(0) {} |
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| 123 | ///\e |
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| 124 | Counter(std::string title,std::ostream &os=std::cerr) |
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| 125 | : _title(title), _os(os), count(0) {} |
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| 126 | ///\e |
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| 127 | Counter(const char *title,std::ostream &os=std::cerr) |
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| 128 | : _title(title), _os(os), count(0) {} |
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| 129 | ///Destructor. Prints the given title and the value of the counter. |
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| 130 | ~Counter() { |
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| 131 | _os << _title << count <<std::endl; |
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| 132 | } |
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| 133 | ///\e |
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| 134 | Counter &operator++() { count++; return *this;} |
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| 135 | ///\e |
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| 136 | int operator++(int) { return count++;} |
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| 137 | ///\e |
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| 138 | Counter &operator--() { count--; return *this;} |
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| 139 | ///\e |
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| 140 | int operator--(int) { return count--;} |
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| 141 | ///\e |
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| 142 | Counter &operator+=(int c) { count+=c; return *this;} |
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| 143 | ///\e |
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| 144 | Counter &operator-=(int c) { count-=c; return *this;} |
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| 145 | ///\e |
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| 146 | void reset(int c=0) {count=c;} |
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| 147 | ///\e |
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| 148 | operator int() {return count;} |
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| 149 | }; |
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| 150 | |
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| 151 | ///'Do nothing' version of \ref Counter |
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| 152 | |
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| 153 | ///'Do nothing' version of \ref Counter. |
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| 154 | ///\sa Counter |
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| 155 | class NoCounter |
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| 156 | { |
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| 157 | public: |
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| 158 | typedef _SubNoCounter<NoCounter> SubCounter; |
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| 159 | typedef _SubNoCounter<NoCounter> SubNoCounter; |
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| 160 | |
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| 161 | NoCounter() {} |
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[1855] | 162 | NoCounter(std::string,std::ostream &) {} |
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| 163 | NoCounter(const char *,std::ostream &) {} |
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| 164 | NoCounter(std::string) {} |
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| 165 | NoCounter(const char *) {} |
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[1847] | 166 | NoCounter &operator++() { return *this; } |
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| 167 | int operator++(int) { return 0; } |
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| 168 | NoCounter &operator--() { return *this; } |
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| 169 | int operator--(int) { return 0; } |
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[1855] | 170 | NoCounter &operator+=(int) { return *this;} |
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| 171 | NoCounter &operator-=(int) { return *this;} |
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| 172 | void reset(int) {} |
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| 173 | void reset() {} |
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[1847] | 174 | operator int() {return 0;} |
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| 175 | }; |
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| 176 | |
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| 177 | ///@} |
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| 178 | } |
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| 179 | |
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| 180 | #endif |
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