You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
59 lines
1.9 KiB
59 lines
1.9 KiB
// iterator.hpp workarounds for non-conforming standard libraries ---------// |
|
|
|
// (C) Copyright Beman Dawes 2000. Distributed under the Boost |
|
// Software License, Version 1.0. (See accompanying file |
|
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
|
|
|
// See http://www.boost.org/libs/utility for documentation. |
|
|
|
// Revision History |
|
// 12 Jan 01 added <cstddef> for std::ptrdiff_t (Jens Maurer) |
|
// 28 Jun 00 Workarounds to deal with known MSVC bugs (David Abrahams) |
|
// 26 Jun 00 Initial version (Jeremy Siek) |
|
|
|
#ifndef BOOST_ITERATOR_HPP |
|
#define BOOST_ITERATOR_HPP |
|
|
|
#include <iterator> |
|
#include <cstddef> // std::ptrdiff_t |
|
#include <boost/config.hpp> |
|
|
|
namespace boost |
|
{ |
|
# if defined(BOOST_NO_STD_ITERATOR) && !defined(BOOST_MSVC_STD_ITERATOR) |
|
template <class Category, class T, |
|
class Distance = std::ptrdiff_t, |
|
class Pointer = T*, class Reference = T&> |
|
struct iterator |
|
{ |
|
typedef T value_type; |
|
typedef Distance difference_type; |
|
typedef Pointer pointer; |
|
typedef Reference reference; |
|
typedef Category iterator_category; |
|
}; |
|
# else |
|
|
|
// declare iterator_base in namespace detail to work around MSVC bugs which |
|
// prevent derivation from an identically-named class in a different namespace. |
|
namespace detail { |
|
template <class Category, class T, class Distance, class Pointer, class Reference> |
|
# if !defined(BOOST_MSVC_STD_ITERATOR) |
|
struct iterator_base : std::iterator<Category, T, Distance, Pointer, Reference> {}; |
|
# else |
|
struct iterator_base : std::iterator<Category, T, Distance> |
|
{ |
|
typedef Reference reference; |
|
typedef Pointer pointer; |
|
typedef Distance difference_type; |
|
}; |
|
# endif |
|
} |
|
|
|
template <class Category, class T, class Distance = std::ptrdiff_t, |
|
class Pointer = T*, class Reference = T&> |
|
struct iterator : boost::detail::iterator_base<Category, T, Distance, Pointer, Reference> {}; |
|
# endif |
|
} // namespace boost |
|
|
|
#endif // BOOST_ITERATOR_HPP
|
|
|