boost_mirror/iterator
1
0
Fork 0
mirror of https://github.com/boostorg/iterator.git synced 2025-05-09 23:23:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

Modernized iterator_traits.hpp.

Browse Source 
Added *_t type traits and removed an oudated macro that was used with
ancient compilers.
This commit is contained in:
Andrey Semashev 2025-02-05 00:24:07 +03:00
parent 6e60ea7a88
commit baf6d06cc2
1 changed files with 24 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
include/boost/iterator/iterator_traits.hpp
View File

@ -3,49 +3,56 @@
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef ITERATOR_TRAITS_DWA200347_HPP
# define ITERATOR_TRAITS_DWA200347_HPP
# include <boost/detail/workaround.hpp>
#define ITERATOR_TRAITS_DWA200347_HPP
#include <iterator>
namespace boost {
namespace iterators {
// Macro for supporting old compilers, no longer needed but kept
// for backwards compatibility (it was documented).
#define BOOST_ITERATOR_CATEGORY iterator_category
template< typename Iterator >
using iterator_value_t = typename std::iterator_traits< Iterator >::value_type;
template <class Iterator>
template< typename Iterator >
struct iterator_value
{
typedef typename std::iterator_traits<Iterator>::value_type type;
using type = iterator_value_t< Iterator >;
};
template <class Iterator>
template< typename Iterator >
using iterator_reference_t = typename std::iterator_traits< Iterator >::reference;
template< typename Iterator >
struct iterator_reference
{
typedef typename std::iterator_traits<Iterator>::reference type;
using type = iterator_reference_t< Iterator >;
};
template< typename Iterator >
using iterator_pointer_t = typename std::iterator_traits< Iterator >::pointer;
template <class Iterator>
template< typename Iterator >
struct iterator_pointer
{
typedef typename std::iterator_traits<Iterator>::pointer type;
using type = iterator_pointer_t< Iterator >;
};
template <class Iterator>
template< typename Iterator >
using iterator_difference_t = typename std::iterator_traits< Iterator >::difference_type;
template< typename Iterator >
struct iterator_difference
{
typedef typename std::iterator_traits<Iterator>::difference_type type;
using type = iterator_difference_t< Iterator >;
};
template <class Iterator>
template< typename Iterator >
using iterator_category_t = typename std::iterator_traits< Iterator >::iterator_category;
template< typename Iterator >
struct iterator_category
{
typedef typename std::iterator_traits<Iterator>::iterator_category type;
using type = iterator_category_t< Iterator >;
};
} // namespace iterators