mirror of
https://github.com/boostorg/iterator.git
synced 2025-10-31 00:11:38 +01:00
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
|
// (C) Copyright Jeremy Siek 1999. Permission to copy, use, modify,
|
||
|
|
// sell and distribute this software is granted provided this
|
||
|
|
// copyright notice appears in all copies. This software is provided
|
||
|
|
// "as is" without express or implied warranty, and with no claim as
|
||
|
|
// to its suitability for any purpose.
|
||
|
|
|
||
|
|
#ifndef BOOST_INT_ITERATOR_H
|
||
|
|
#define BOOST_INT_ITERATOR_H
|
||
|
|
|
||
|
|
#include <boost/iterator.hpp>
|
||
|
|
#if !defined BOOST_MSVC
|
||
|
|
#include <boost/operators.hpp>
|
||
|
|
#endif
|
||
|
|
#include <iostream>
|
||
|
|
//using namespace std;
|
||
|
|
|
||
|
|
#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
|
||
|
|
namespace boost {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// this should use random_access_iterator_helper but I've had
|
||
|
|
// VC++ portablility problems with that. -JGS
|
||
|
|
template <class IntT>
|
||
|
|
class int_iterator
|
||
|
|
{
|
||
|
|
typedef int_iterator self;
|
||
|
|
public:
|
||
|
|
typedef std::random_access_iterator_tag iterator_category;
|
||
|
|
typedef IntT value_type;
|
||
|
|
typedef IntT& reference;
|
||
|
|
typedef IntT* pointer;
|
||
|
|
typedef ptrdiff_t difference_type;
|
||
|
|
|
||
|
|
inline int_iterator() : _i(0) { }
|
||
|
|
inline int_iterator(IntT i) : _i(i) { }
|
||
|
|
inline int_iterator(const self& x) : _i(x._i) { }
|
||
|
|
inline self& operator=(const self& x) { _i = x._i; return *this; }
|
||
|
|
inline IntT operator*() { return _i; }
|
||
|
|
inline IntT operator[](IntT n) { return _i + n; }
|
||
|
|
inline self& operator++() { ++_i; return *this; }
|
||
|
|
inline self operator++(int) { self t = *this; ++_i; return t; }
|
||
|
|
inline self& operator+=(IntT n) { _i += n; return *this; }
|
||
|
|
inline self operator+(IntT n) { self t = *this; t._i += n; return t; }
|
||
|
|
inline self& operator--() { --_i; return *this; }
|
||
|
|
inline self operator--(int) { self t = *this; --_i; return t; }
|
||
|
|
inline self& operator-=(IntT n) { _i -= n; return *this; }
|
||
|
|
inline IntT operator-(const self& x) const { return _i - x._i; }
|
||
|
|
inline bool operator==(const self& x) const { return _i == x._i; }
|
||
|
|
// vc++ had a problem finding != in random_access_iterator_helper
|
||
|
|
// need to look into this... for now implementing everything here -JGS
|
||
|
|
inline bool operator!=(const self& x) const { return _i != x._i; }
|
||
|
|
inline bool operator<(const self& x) const { return _i < x._i; }
|
||
|
|
protected:
|
||
|
|
IntT _i;
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
|
||
|
|
} /* namespace boost */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BOOST_NO_OPERATORS_IN_NAMESPACE
|
||
|
|
namespace boost {
|
||
|
|
using ::int_iterator;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* BOOST_INT_ITERATOR_H */
|