Edit: /usr/include/boost/core/pointer_traits.hpp (5072B)
/*
Copyright 2017-2018 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_CORE_POINTER_TRAITS_HPP
#define BOOST_CORE_POINTER_TRAITS_HPP
#include
#if !defined(BOOST_NO_CXX11_POINTER_TRAITS)
#include
#else
#include
#include
#endif
namespace boost {
#if !defined(BOOST_NO_CXX11_POINTER_TRAITS)
template
struct pointer_traits
: std::pointer_traits {
template
struct rebind_to {
typedef typename std::pointer_traits::template rebind type;
};
};
template
struct pointer_traits
: std::pointer_traits {
template
struct rebind_to {
typedef U* type;
};
};
#else
namespace detail {
template
struct ptr_void {
typedef void type;
};
template
struct ptr_first;
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template class T, class U, class... Args>
struct ptr_first > {
typedef U type;
};
#else
template class T, class U>
struct ptr_first > {
typedef U type;
};
template class T, class U1, class U2>
struct ptr_first > {
typedef U1 type;
};
template class T, class U1, class U2, class U3>
struct ptr_first > {
typedef U1 type;
};
#endif
template
struct ptr_element {
typedef typename ptr_first::type type;
};
template
struct ptr_element::type> {
typedef typename T::element_type type;
};
template
struct ptr_difference {
typedef std::ptrdiff_t type;
};
template
struct ptr_difference::type> {
typedef typename T::difference_type type;
};
template
struct ptr_transform;
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template class T, class U, class... Args, class V>
struct ptr_transform, V> {
typedef T type;
};
#else
template class T, class U, class V>
struct ptr_transform, V> {
typedef T type;
};
template class T, class U1, class U2, class V>
struct ptr_transform, V> {
typedef T type;
};
template class T,
class U1, class U2, class U3, class V>
struct ptr_transform, V> {
typedef T type;
};
#endif
template
struct ptr_rebind {
typedef typename ptr_transform::type type;
};
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template
struct ptr_rebind >::type> {
typedef typename T::template rebind type;
};
#endif
template
struct ptr_value {
typedef T type;
};
template<>
struct ptr_value {
typedef struct { } type;
};
} /* detail */
template
struct pointer_traits {
typedef T pointer;
typedef typename detail::ptr_element::type element_type;
typedef typename detail::ptr_difference::type difference_type;
template
struct rebind_to {
typedef typename detail::ptr_rebind::type type;
};
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template
using rebind = typename detail::ptr_rebind::type;
#endif
static pointer
pointer_to(typename detail::ptr_value::type& v) {
return pointer::pointer_to(v);
}
};
template
struct pointer_traits {
typedef T* pointer;
typedef T element_type;
typedef std::ptrdiff_t difference_type;
template
struct rebind_to {
typedef U* type;
};
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template
using rebind = U*;
#endif
static T*
pointer_to(typename detail::ptr_value::type& v) BOOST_NOEXCEPT {
return boost::addressof(v);
}
};
#endif
template
BOOST_CONSTEXPR inline T*
to_address(T* v) BOOST_NOEXCEPT
{
return v;
}
#if !defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)
namespace detail {
template
inline T*
ptr_address(T* v, int) BOOST_NOEXCEPT
{
return v;
}
template
inline auto
ptr_address(const T& v, int) BOOST_NOEXCEPT
-> decltype(boost::pointer_traits::to_address(v))
{
return boost::pointer_traits::to_address(v);
}
template
inline auto
ptr_address(const T& v, long) BOOST_NOEXCEPT
{
return boost::detail::ptr_address(v.operator->(), 0);
}
} /* detail */
template
inline auto
to_address(const T& v) BOOST_NOEXCEPT
{
return boost::detail::ptr_address(v, 0);
}
#else
template
inline typename pointer_traits::element_type*
to_address(const T& v) BOOST_NOEXCEPT
{
return boost::to_address(v.operator->());
}
#endif
} /* boost */
#endif