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Revise allocator_access implementation

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This commit is contained in:
Glen Fernandes
2020-05-25 15:00:18 -04:00
parent 65901249d5
commit 376aa7aa31
22 changed files with 562 additions and 582 deletions
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632
include/boost/core/allocator_access.hpp
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@@ -8,40 +8,53 @@ Distributed under the Boost Software License, Version 1.0.
#ifndef BOOST_CORE_ALLOCATOR_ACCESS_HPP
#define BOOST_CORE_ALLOCATOR_ACCESS_HPP
#include <boost/config.hpp>
#if !defined(BOOST_NO_CXX11_ALLOCATOR)
#include <boost/core/pointer_traits.hpp>
#if !defined(BOOST_MSVC)
#include <limits>
#if defined(BOOST_DINKUMWARE_STDLIB)
#else
#include <memory>
#endif
#include <new>
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
#include <type_traits>
#endif
#include <new>
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
#include <utility>
#endif
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR) || \
defined(BOOST_MSVC) && BOOST_MSVC == 1800
#define BOOST_CORE_ALLOCATOR_DETECTION
namespace boost {
namespace detail {
#if defined(BOOST_NO_CXX11_ALLOCATOR)
struct alloc_false {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#else
template<class>
struct alloc_void {
typedef void type;
};
#endif
namespace boost {
} /* detail */
template<class A>
struct allocator_value_type {
typedef typename A::value_type type;
};
namespace detail {
template<class>
struct alloc_void {
typedef void type;
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_pointer {
typedef typename A::pointer type;
};
} /* detail */
#elif defined(BOOST_MSVC)
template<class A>
struct allocator_pointer {
typedef typename std::allocator_traits<A>::pointer type;
};
#else
template<class A, class = void>
struct allocator_pointer {
typedef typename A::value_type* type;
@@ -52,7 +65,19 @@ struct allocator_pointer<A,
typename detail::alloc_void<typename A::pointer>::type> {
typedef typename A::pointer type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_const_pointer {
typedef typename A::const_pointer type;
};
#elif defined(BOOST_MSVC)
template<class A>
struct allocator_const_pointer {
typedef typename std::allocator_traits<A>::const_pointer type;
};
#else
template<class A, class = void>
struct allocator_const_pointer {
typedef typename pointer_traits<typename
@@ -65,7 +90,14 @@ struct allocator_const_pointer<A,
typename detail::alloc_void<typename A::const_pointer>::type> {
typedef typename A::const_pointer type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_void_pointer {
typedef typename A::template rebind<void>::other::pointer type;
};
#else
template<class A, class = void>
struct allocator_void_pointer {
typedef typename pointer_traits<typename
@@ -78,7 +110,14 @@ struct allocator_void_pointer<A,
typename detail::alloc_void<typename A::void_pointer>::type> {
typedef typename A::void_pointer type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_const_void_pointer {
typedef typename A::template rebind<void>::other::const_pointer type;
};
#else
template<class A, class = void>
struct allocator_const_void_pointer {
typedef typename pointer_traits<typename
@@ -91,7 +130,14 @@ struct allocator_const_void_pointer<A,
typename detail::alloc_void<typename A::const_void_pointer>::type> {
typedef typename A::const_void_pointer type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_difference_type {
typedef typename A::difference_type type;
};
#else
template<class A, class = void>
struct allocator_difference_type {
typedef typename pointer_traits<typename
@@ -103,8 +149,14 @@ struct allocator_difference_type<A,
typename detail::alloc_void<typename A::difference_type>::type> {
typedef typename A::difference_type type;
};
#endif
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_size_type {
typedef typename A::size_type type;
};
#else
template<class A, class = void>
struct allocator_size_type {
typedef typename std::make_unsigned<typename
@@ -116,28 +168,17 @@ struct allocator_size_type<A,
typename detail::alloc_void<typename A::size_type>::type> {
typedef typename A::size_type type;
};
#else
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_size_type {
typedef typename A::size_type type;
struct allocator_propagate_on_container_copy_assignment {
typedef detail::alloc_false type;
};
#endif
namespace detail {
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
typedef std::false_type alloc_false_type;
#else
struct alloc_false_type {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#endif
} /* detail */
template<class A, class = void>
struct allocator_propagate_on_container_copy_assignment {
typedef detail::alloc_false_type type;
typedef std::false_type type;
};
template<class A>
@@ -146,10 +187,17 @@ struct allocator_propagate_on_container_copy_assignment<A,
A::propagate_on_container_copy_assignment>::type> {
typedef typename A::propagate_on_container_copy_assignment type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_propagate_on_container_move_assignment {
typedef detail::alloc_false type;
};
#else
template<class A, class = void>
struct allocator_propagate_on_container_move_assignment {
typedef detail::alloc_false_type type;
typedef std::false_type type;
};
template<class A>
@@ -158,10 +206,17 @@ struct allocator_propagate_on_container_move_assignment<A,
A::propagate_on_container_move_assignment>::type> {
typedef typename A::propagate_on_container_move_assignment type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_propagate_on_container_swap {
typedef detail::alloc_false type;
};
#else
template<class A, class = void>
struct allocator_propagate_on_container_swap {
typedef detail::alloc_false_type type;
typedef std::false_type type;
};
template<class A>
@@ -170,52 +225,46 @@ struct allocator_propagate_on_container_swap<A,
A::propagate_on_container_swap>::type> {
typedef typename A::propagate_on_container_swap type;
};
#endif
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
template<class A, class = void>
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
struct allocator_is_always_equal {
typedef typename std::is_empty<A>::type type;
typedef detail::alloc_false type;
};
#else
template<class A, class = void>
struct allocator_is_always_equal {
typedef typename detail::alloc_false_type type;
typedef typename std::is_empty<A>::type type;
};
#endif
template<class A>
struct allocator_is_always_equal<A,
typename detail::alloc_void<typename A::is_always_equal>::type> {
typedef typename A::is_always_equal type;
};
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A, class T>
struct allocator_rebind {
typedef typename A::template rebind<T>::other type;
};
#elif defined(BOOST_MSVC)
template<class A, class T>
struct allocator_rebind {
typedef typename std::allocator_traits<A>::template rebind_alloc<T> type;
};
#else
namespace detail {
template<class, class>
struct alloc_to { };
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template<template<class, class...> class A, class T, class U, class... V>
struct alloc_to<A<U, V...>, T> {
typedef A<T, V...> type;
};
#else
template<template<class> class A, class T, class U>
struct alloc_to<A<U>, T> {
typedef A<T> type;
};
template<template<class, class> class A, class T, class U1, class U2>
struct alloc_to<A<U1, U2>, T> {
typedef A<T, U2> type;
};
template<template<class, class, class> class A, class T, class U1, class U2,
class U3>
struct alloc_to<A<U1, U2, U3>, T> {
typedef A<T, U2, U3> type;
};
#endif
} /* detail */
@@ -229,6 +278,7 @@ struct allocator_rebind<A, T,
typename detail::alloc_void<typename A::template rebind<T>::other>::type> {
typedef typename A::template rebind<T>::other type;
};
#endif
template<class A>
inline typename allocator_pointer<A>::type
@@ -237,98 +287,6 @@ allocator_allocate(A& a, typename allocator_size_type<A>::type n)
return a.allocate(n);
}
namespace detail {
template<bool, class = void>
struct alloc_if { };
template<class R>
struct alloc_if<true, R> {
typedef R type;
};
template<class>
struct alloc_enable {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#if defined(BOOST_DINKUMWARE_STDLIB)
template<class T>
struct alloc_enable<std::allocator<T> > {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#endif
#if defined(BOOST_CORE_ALLOCATOR_DETECTION)
template<class T>
T alloc_declval() BOOST_NOEXCEPT;
#endif
#if defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class>
struct alloc_yes {
BOOST_STATIC_CONSTEXPR bool value = true;
};
struct alloc_no {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#endif
template<class, class, class, class = void>
struct alloc_has_allocate {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A, class N, class H>
struct alloc_has_allocate<A, N, H,
decltype(alloc_declval<A&>().allocate(alloc_declval<N>(),
alloc_declval<H>()), void())> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A, class N, class H>
struct alloc_has_allocate<A, N, H, void> {
private:
template<class U>
static auto call(int, U& a) ->
alloc_yes<decltype(a.allocate(alloc_declval<N>(),
alloc_declval<H>()))>;
template<class U>
static alloc_no call(long, U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<A&>()))::value;
};
#endif
} /* detail */
template<class A>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_allocate<A, typename allocator_size_type<A>::type,
typename allocator_const_void_pointer<A>::type>::value,
typename allocator_pointer<A>::type>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type h)
{
return a.allocate(n, h);
}
template<class A>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_allocate<A, typename allocator_size_type<A>::type,
typename allocator_const_void_pointer<A>::type>::value,
typename allocator_pointer<A>::type>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type)
{
return a.allocate(n);
}
template<class A>
inline void
allocator_deallocate(A& a, typename allocator_pointer<A>::type p,
@@ -337,191 +295,158 @@ allocator_deallocate(A& a, typename allocator_pointer<A>::type p,
a.deallocate(p, n);
}
namespace detail {
template<class, class, class = void>
struct alloc_has_construct {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A, class T>
struct alloc_has_construct<A, T,
decltype(alloc_declval<A&>().construct(alloc_declval<T*>()), void())> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A, class T>
struct alloc_has_construct<A, T, void> {
private:
template<class U>
static auto call(int, U& a) ->
alloc_yes<decltype(a.construct(alloc_declval<T*>()))>;
template<class U>
static alloc_no call(long, U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<A&>()))::value;
};
#endif
} /* detail */
template<class A, class T>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_construct<A, T>::value>::type
allocator_construct(A& a, T* p)
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
inline typename allocator_pointer<A>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type h)
{
a.construct(p);
return a.allocate(n, h);
}
template<class A, class T>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_construct<A, T>::value>::type
allocator_construct(A&, T* p)
#elif defined(BOOST_MSVC)
template<class A>
inline typename allocator_pointer<A>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type h)
{
::new((void*)p) T();
}
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
!defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
namespace detail {
template<class, class, class, class...>
struct alloc_has_construct_args {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A, class T, class... Args>
struct alloc_has_construct_args<decltype(alloc_declval<A
&>().construct(alloc_declval<T*>(), alloc_declval<Args&&>()...), void()),
A, T, Args...> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A, class T, class... Args>
struct alloc_has_construct_args<void, A, T, Args...> {
private:
template<class U>
static auto call(int, U& a) ->
alloc_yes<decltype(a.construct(alloc_declval<T*>(),
alloc_declval<Args&&>()...))>;
template<class U>
static alloc_no call(long, U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<A&>()))::value;
};
#endif
} /* detail */
template<class A, class T, class V, class... Args>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_construct_args<void, A, T, V, Args...>::value>::type
allocator_construct(A& a, T* p, V&& v, Args&&... args)
{
a.construct(p, std::forward<V>(v), std::forward<Args>(args)...);
}
template<class A, class T, class V, class... Args>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_construct_args<void, A, T, V, Args...>::value>::type
allocator_construct(A&, T* p, V&& v, Args&&... args)
{
::new((void*)p) T(std::forward<V>(v), std::forward<Args>(args)...);
return std::allocator_traits<A>::allocate(a, n, h);
}
#else
namespace detail {
template<class, class, class, class = void>
struct alloc_has_construct_arg {
struct alloc_has_allocate {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A, class T, class V>
struct alloc_has_construct_arg<A, T, V,
decltype(alloc_declval<A&>().construct(alloc_declval<T*>(),
alloc_declval<V>()), void())> {
template<class A, class N, class H>
struct alloc_has_allocate<A, N, H,
typename alloc_void<decltype(std::declval<A&>().allocate(std::declval<N>(),
std::declval<H>()))>::type> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A, class T, class V>
struct alloc_has_construct_arg<A, T, V, void> {
private:
template<class U>
static auto call(int, U& a) ->
alloc_yes<decltype(a.construct(alloc_declval<T*>(),
alloc_declval<V>()))>;
template<class U>
static alloc_no call(long, U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<A&>()))::value;
};
#endif
} /* detail */
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
template<class A, class T, class V>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_construct_arg<A, T, V&&>::value>::type
allocator_construct(A& a, T* p, V&& v)
template<class A>
inline typename std::enable_if<detail::alloc_has_allocate<A,
typename allocator_size_type<A>::type,
typename allocator_const_void_pointer<A>::type>::value,
typename allocator_pointer<A>::type>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type h)
{
a.construct(p, std::forward<V>(v));
return a.allocate(n, h);
}
template<class A>
inline typename std::enable_if<!detail::alloc_has_allocate<A,
typename allocator_size_type<A>::type,
typename allocator_const_void_pointer<A>::type>::value,
typename allocator_pointer<A>::type>::type
allocator_allocate(A& a, typename allocator_size_type<A>::type n,
typename allocator_const_void_pointer<A>::type)
{
return a.allocate(n);
}
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A, class T>
inline void
allocator_construct(A&, T* p)
{
::new((void*)p) T();
}
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template<class A, class T, class V, class... Args>
inline void
allocator_construct(A&, T* p, V&& v, Args&&... args)
{
::new((void*)p) T(std::forward<V>(v), std::forward<Args>(args)...);
}
#else
template<class A, class T, class V>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_construct_arg<A, T, V&&>::value>::type
inline void
allocator_construct(A&, T* p, V&& v)
{
::new((void*)p) T(std::forward<V>(v));
}
#endif
#else
template<class A, class T, class V>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_construct_arg<A, T, const V&>::value>::type
allocator_construct(A& a, T* p, const V& v)
{
a.construct(p, v);
}
template<class A, class T, class V>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_construct_arg<A, T, const V&>::value>::type
inline void
allocator_construct(A&, T* p, const V& v)
{
::new((void*)p) T(v);
}
template<class A, class T, class V>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_construct_arg<A, T, V&>::value>::type
allocator_construct(A& a, T* p, V& v)
{
a.construct(p, v);
}
template<class A, class T, class V>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_construct_arg<A, T, V&>::value>::type
inline void
allocator_construct(A&, T* p, V& v)
{
::new((void*)p) T(v);
}
#endif
#elif defined(BOOST_MSVC)
template<class A, class T, class... Args>
inline void
allocator_construct(A& a, T* p, Args&&... args)
{
std::allocator_traits<A>::construct(a, p, std::forward<Args>(args)...);
}
#else
namespace detail {
template<class, class, class, class...>
struct alloc_has_construct {
BOOST_STATIC_CONSTEXPR bool value = false;
};
template<class A, class T, class... Args>
struct alloc_has_construct<typename alloc_void<decltype(std::declval<A
&>().construct(std::declval<T*>(), std::declval<Args&&>()...))>::type,
A, T, Args...> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
} /* detail */
template<class A, class T, class... Args>
inline typename std::enable_if<detail::alloc_has_construct<void, A, T,
Args...>::value>::type
allocator_construct(A& a, T* p, Args&&... args)
{
a.construct(p, std::forward<Args>(args)...);
}
template<class A, class T, class... Args>
inline typename std::enable_if<!detail::alloc_has_construct<void, A, T,
Args...>::value>::type
allocator_construct(A&, T* p, Args&&... args)
{
::new((void*)p) T(std::forward<Args>(args)...);
}
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A, class T>
inline void
allocator_destroy(A&, T* p)
{
p->~T();
(void)p;
}
#elif defined(BOOST_MSVC)
template<class A, class T>
inline void
allocator_destroy(A& a, T* p)
{
std::allocator_traits<A>::destroy(a, p);
}
#else
namespace detail {
template<class, class, class = void>
@@ -529,48 +454,46 @@ struct alloc_has_destroy {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A, class T>
struct alloc_has_destroy<A, T,
decltype(alloc_declval<A&>().destroy(alloc_declval<T*>()), void())> {
typename alloc_void<decltype(std::declval<A
&>().destroy(std::declval<T*>()))>::type> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A, class T>
struct alloc_has_destroy<A, T, void> {
private:
template<class U>
static auto call(int, U& a) ->
alloc_yes<decltype(a.destroy(alloc_declval<T*>()))>;
template<class U>
static alloc_no call(long, U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<A&>()))::value;
};
#endif
} /* detail */
template<class A, class T>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_destroy<A, T>::value>::type
inline typename std::enable_if<detail::alloc_has_destroy<A, T>::value>::type
allocator_destroy(A& a, T* p)
{
a.destroy(p);
}
template<class A, class T>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_destroy<A, T>::value>::type
inline typename std::enable_if<!detail::alloc_has_destroy<A, T>::value>::type
allocator_destroy(A&, T* p)
{
p->~T();
(void)p;
}
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
inline typename allocator_size_type<A>::type
allocator_max_size(const A& a)
{
return a.max_size();
}
#elif defined(BOOST_MSVC)
template<class A>
inline typename allocator_size_type<A>::type
allocator_max_size(const A& a)
{
return std::allocator_traits<A>::max_size(a);
}
#else
namespace detail {
template<class, class = void>
@@ -578,49 +501,48 @@ struct alloc_has_max_size {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A>
struct alloc_has_max_size<A,
decltype(alloc_declval<const A&>().max_size(), void())> {
typename alloc_void<decltype(std::declval<const
A&>().max_size())>::type> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A>
struct alloc_has_max_size<A, void> {
private:
template<class U>
static auto call(int, const U& a) -> alloc_yes<decltype(a.max_size())>;
template<class U>
static alloc_no call(long, const U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<const A&>()))::value;
};
#endif
} /* detail */
template<class A>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_max_size<A>::value,
typename allocator_size_type<A>::type>::type
inline typename std::enable_if<detail::alloc_has_max_size<A>::value,
typename allocator_size_type<A>::type>::type
allocator_max_size(const A& a)
{
return a.max_size();
}
template<class A>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_max_size<A>::value,
typename allocator_size_type<A>::type>::type
inline typename std::enable_if<!detail::alloc_has_max_size<A>::value,
typename allocator_size_type<A>::type>::type
allocator_max_size(const A&)
{
return (std::numeric_limits<typename
allocator_size_type<A>::type>::max)() / sizeof(typename A::value_type);
}
#endif
#if defined(BOOST_NO_CXX11_ALLOCATOR)
template<class A>
inline A
allocator_select_on_container_copy_construction(const A& a)
{
return a;
}
#elif defined(BOOST_MSVC)
template<class A>
inline A
allocator_select_on_container_copy_construction(const A& a)
{
return std::allocator_traits<A>::select_on_container_copy_construction(a);
}
#else
namespace detail {
template<class, class = void>
@@ -628,47 +550,29 @@ struct alloc_has_soccc {
BOOST_STATIC_CONSTEXPR bool value = false;
};
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_SFINAE_EXPR)
template<class A>
struct alloc_has_soccc<A,
decltype(alloc_declval<const A&>().select_on_container_copy_construction(),
void())> {
typename alloc_void<decltype(std::declval<const
A&>().select_on_container_copy_construction())>::type> {
BOOST_STATIC_CONSTEXPR bool value = true;
};
#elif defined(BOOST_MSVC) && BOOST_MSVC == 1800
template<class A>
struct alloc_has_soccc<A, void> {
private:
template<class U>
static auto call(int, const U& a) ->
alloc_yes<decltype(a.select_on_container_copy_construction())>;
template<class U>
static alloc_no call(long, const U&);
public:
BOOST_STATIC_CONSTEXPR bool value = decltype(call(0,
alloc_declval<const A&>()))::value;
};
#endif
} /* detail */
template<class A>
inline typename detail::alloc_if<detail::alloc_enable<A>::value &&
detail::alloc_has_soccc<A>::value, A>::type
inline typename std::enable_if<detail::alloc_has_soccc<A>::value, A>::type
allocator_select_on_container_copy_construction(const A& a)
{
return a.select_on_container_copy_construction();
}
template<class A>
inline typename detail::alloc_if<!detail::alloc_enable<A>::value ||
!detail::alloc_has_soccc<A>::value, A>::type
inline typename std::enable_if<!detail::alloc_has_soccc<A>::value, A>::type
allocator_select_on_container_copy_construction(const A& a)
{
return a;
}
#endif
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template<class A>