/usr/include/CGAL/Tools/Counter.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | // Copyright (c) 2005 Stanford University (USA).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Daniel Russel <drussel@alumni.princeton.edu>
#ifndef CGAL_DSR_COUNTER_H
#define CGAL_DSR_COUNTER_H
#include <iterator>
#include <CGAL/basic.h>
#include <CGAL/Tools/Label.h>
namespace CGAL {
//! An integer iterator
/*! It looks like an iterator but just wraps an integer. All the
expected iterator operations are supported (namely operator* and
operator->, which just return the value).
*/
template <class T=int, class W=T>
class Counter
{
typedef Counter<T, W> This;
public:
Counter(T t=0):t_(t) {
}
This &operator++() {
++t_;
return *this;
}
This operator++(int) {
This ret= *this;
++t_;
return ret;
}
//! Return the value
W operator*() const
{
return W(t_);
}
//! Return a pointer to the value.
W* operator->() const
{
static W ret;
ret=W(t_);
return &ret;
}
bool operator==(const This &o) const
{
return t_ == o.t_;
}
bool operator!=(const This &o) const
{
return t_ != o.t_;
}
bool operator<(const This &o) const
{
return t_ < o.t_;
}
T operator-(const This &o) const
{
return t_-o.t_;
}
/*const This& operator+=(T &v) {
t_+=v;
return *this;
}*/
const This& operator+=(unsigned int v) {
t_+=v;
return *this;
}
const This& operator-=(T &v) {
t_-=v;
return *this;
}
//! Cast it to something
template <class J>
void operator()(const J&) {
++*this;
}
typedef std::random_access_iterator_tag iterator_category;
typedef W value_type;
typedef T difference_type;
typedef W* pointer;
typedef W& reference;
protected:
T t_;
};
//! The Counter is specialized for int and Label.
/*!
I don't remember why I did this.
*/
/*template <>
template <class LT>
class Counter<int, Label<LT> >{
typedef Label<LT> Label;
typedef Counter<int, Label > This;
public:
Counter(int t=0):t_(t){
}
This &operator++(){
t_= Label(t_.index()+1);
return *this;
}
This operator++(int){
This ret= *this;
t_= Label(t_.index()+1);;
return ret;
}
Label operator*() const {
return t_;
}
const Label* operator->() const {
return &t_;
}
bool operator==(const This &o) const {
return t_ == o.t_;
}
bool operator!=(const This &o) const {
return t_ != o.t_;
}
bool operator<(const This &o) const {
return t_ < o.t_;
}
int operator-(const This &o) const {
return t_.index()-o.t_.index();
}
const This& operator+=(unsigned int v) {
t_= Label(t_.index()+v);
return *this;
}
const This& operator-=(int &v) {
t_ = Label(t_.index()-v);
return *this;
}
template <class J>
void operator()(const J&){
++*this;
}
typedef std::random_access_iterator_tag iterator_category;
typedef Label value_type;
typedef int difference_type;
typedef Label* pointer;
typedef Label& reference;
protected:
Label t_;
};*/
template <class T>
Counter<T> counter(T t)
{
return Counter<T>(t);
}
} //namespace CGAL
#endif
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