ecency-mobile/ios/Pods/boost-for-react-native/boost/unordered/detail/allocate.hpp

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51 KiB
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// Copyright 2005-2011 Daniel James.
// Copyright 2009 Pablo Halpern.
// 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/unordered for documentation
#ifndef BOOST_UNORDERED_ALLOCATE_HPP
#define BOOST_UNORDERED_ALLOCATE_HPP
#include <boost/config.hpp>
#if defined(BOOST_HAS_PRAGMA_ONCE)
#pragma once
#endif
// Some of these includes are required for other detail headers.
#include <boost/unordered/detail/fwd.hpp>
#include <boost/move/move.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/repetition/enum.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_binary_params.hpp>
#include <boost/preprocessor/repetition/repeat_from_to.hpp>
#include <boost/type_traits/is_class.hpp>
#include <boost/type_traits/add_lvalue_reference.hpp>
#include <boost/type_traits/aligned_storage.hpp>
#include <boost/type_traits/alignment_of.hpp>
#include <boost/type_traits/is_nothrow_move_constructible.hpp>
#include <boost/type_traits/is_nothrow_move_assignable.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/utility/addressof.hpp>
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/detail/select_type.hpp>
#include <boost/swap.hpp>
#include <boost/assert.hpp>
#include <boost/limits.hpp>
#include <iterator>
#include <utility>
#include <cmath>
#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
#include <tuple>
#endif
#if defined(BOOST_MSVC)
#pragma warning(push)
#pragma warning(disable:4512) // assignment operator could not be generated.
#pragma warning(disable:4345) // behavior change: an object of POD type
// constructed with an initializer of the form ()
// will be default-initialized.
#endif
// Maximum number of arguments supported by emplace + 1.
#define BOOST_UNORDERED_EMPLACE_LIMIT 11
namespace boost { namespace unordered { namespace detail {
////////////////////////////////////////////////////////////////////////////
// Bits and pieces for implementing traits
template <typename T> typename boost::add_lvalue_reference<T>::type make();
struct choice9 { typedef char (&type)[9]; };
struct choice8 : choice9 { typedef char (&type)[8]; };
struct choice7 : choice8 { typedef char (&type)[7]; };
struct choice6 : choice7 { typedef char (&type)[6]; };
struct choice5 : choice6 { typedef char (&type)[5]; };
struct choice4 : choice5 { typedef char (&type)[4]; };
struct choice3 : choice4 { typedef char (&type)[3]; };
struct choice2 : choice3 { typedef char (&type)[2]; };
struct choice1 : choice2 { typedef char (&type)[1]; };
choice1 choose();
typedef choice1::type yes_type;
typedef choice2::type no_type;
struct private_type
{
private_type const &operator,(int) const;
};
template <typename T>
no_type is_private_type(T const&);
yes_type is_private_type(private_type const&);
struct convert_from_anything {
template <typename T>
convert_from_anything(T const&);
};
namespace func {
// This is a bit nasty, when constructing the individual members
// of a std::pair, need to cast away 'const'. For modern compilers,
// should be able to use std::piecewise_construct instead.
template <typename T> T* const_cast_pointer(T* x) { return x; }
template <typename T> T* const_cast_pointer(T const* x) {
return const_cast<T*>(x);
}
}
////////////////////////////////////////////////////////////////////////////
// emplace_args
//
// Either forwarding variadic arguments, or storing the arguments in
// emplace_args##n
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
#define BOOST_UNORDERED_EMPLACE_ARGS1(a0) a0
#define BOOST_UNORDERED_EMPLACE_ARGS2(a0, a1) a0, a1
#define BOOST_UNORDERED_EMPLACE_ARGS3(a0, a1, a2) a0, a1, a2
#define BOOST_UNORDERED_EMPLACE_TEMPLATE typename... Args
#define BOOST_UNORDERED_EMPLACE_ARGS BOOST_FWD_REF(Args)... args
#define BOOST_UNORDERED_EMPLACE_FORWARD boost::forward<Args>(args)...
#else
#define BOOST_UNORDERED_EMPLACE_ARGS1 create_emplace_args
#define BOOST_UNORDERED_EMPLACE_ARGS2 create_emplace_args
#define BOOST_UNORDERED_EMPLACE_ARGS3 create_emplace_args
#define BOOST_UNORDERED_EMPLACE_TEMPLATE typename Args
#define BOOST_UNORDERED_EMPLACE_ARGS Args const& args
#define BOOST_UNORDERED_EMPLACE_FORWARD args
#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
#define BOOST_UNORDERED_EARGS_MEMBER(z, n, _) \
typedef BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(Arg, n); \
BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
#else
#define BOOST_UNORDERED_EARGS_MEMBER(z, n, _) \
typedef typename boost::add_lvalue_reference<BOOST_PP_CAT(A, n)>::type \
BOOST_PP_CAT(Arg, n); \
BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
#endif
template <typename A0>
struct emplace_args1
{
BOOST_UNORDERED_EARGS_MEMBER(1, 0, _)
emplace_args1(Arg0 b0) : a0(b0) {}
};
template <typename A0>
inline emplace_args1<A0> create_emplace_args(
BOOST_FWD_REF(A0) b0)
{
emplace_args1<A0> e(b0);
return e;
}
template <typename A0, typename A1>
struct emplace_args2
{
BOOST_UNORDERED_EARGS_MEMBER(1, 0, _)
BOOST_UNORDERED_EARGS_MEMBER(1, 1, _)
emplace_args2(Arg0 b0, Arg1 b1) : a0(b0), a1(b1) {}
};
template <typename A0, typename A1>
inline emplace_args2<A0, A1> create_emplace_args(
BOOST_FWD_REF(A0) b0,
BOOST_FWD_REF(A1) b1)
{
emplace_args2<A0, A1> e(b0, b1);
return e;
}
template <typename A0, typename A1, typename A2>
struct emplace_args3
{
BOOST_UNORDERED_EARGS_MEMBER(1, 0, _)
BOOST_UNORDERED_EARGS_MEMBER(1, 1, _)
BOOST_UNORDERED_EARGS_MEMBER(1, 2, _)
emplace_args3(Arg0 b0, Arg1 b1, Arg2 b2) : a0(b0), a1(b1), a2(b2) {}
};
template <typename A0, typename A1, typename A2>
inline emplace_args3<A0, A1, A2> create_emplace_args(
BOOST_FWD_REF(A0) b0,
BOOST_FWD_REF(A1) b1,
BOOST_FWD_REF(A2) b2)
{
emplace_args3<A0, A1, A2> e(b0, b1, b2);
return e;
}
#define BOOST_UNORDERED_FWD_PARAM(z, n, a) \
BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(a, n)
#define BOOST_UNORDERED_CALL_FORWARD(z, i, a) \
boost::forward<BOOST_PP_CAT(A,i)>(BOOST_PP_CAT(a,i))
#define BOOST_UNORDERED_EARGS_INIT(z, n, _) \
BOOST_PP_CAT(a, n)(BOOST_PP_CAT(b, n))
#define BOOST_UNORDERED_EARGS(z, n, _) \
template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
struct BOOST_PP_CAT(emplace_args, n) \
{ \
BOOST_PP_REPEAT_##z(n, BOOST_UNORDERED_EARGS_MEMBER, _) \
BOOST_PP_CAT(emplace_args, n) ( \
BOOST_PP_ENUM_BINARY_PARAMS_Z(z, n, Arg, b) \
) : BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_EARGS_INIT, _) \
{} \
\
}; \
\
template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
inline BOOST_PP_CAT(emplace_args, n) < \
BOOST_PP_ENUM_PARAMS_Z(z, n, A) \
> create_emplace_args( \
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_FWD_PARAM, b) \
) \
{ \
BOOST_PP_CAT(emplace_args, n) < \
BOOST_PP_ENUM_PARAMS_Z(z, n, A) \
> e(BOOST_PP_ENUM_PARAMS_Z(z, n, b)); \
return e; \
}
BOOST_PP_REPEAT_FROM_TO(4, BOOST_UNORDERED_EMPLACE_LIMIT, BOOST_UNORDERED_EARGS,
_)
#undef BOOST_UNORDERED_DEFINE_EMPLACE_ARGS
#undef BOOST_UNORDERED_EARGS_MEMBER
#undef BOOST_UNORDERED_EARGS_INIT
#endif
}}}
////////////////////////////////////////////////////////////////////////////////
//
// Pick which version of allocator_traits to use
//
// 0 = Own partial implementation
// 1 = std::allocator_traits
// 2 = boost::container::allocator_traits
#if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
# if !defined(BOOST_NO_CXX11_ALLOCATOR)
# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 1
# elif defined(BOOST_MSVC)
# if BOOST_MSVC < 1400
// Use container's allocator_traits for older versions of Visual
// C++ as I don't test with them.
# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 2
# endif
# endif
#endif
#if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 0
#endif
////////////////////////////////////////////////////////////////////////////////
//
// Some utilities for implementing allocator_traits, but useful elsewhere so
// they're always defined.
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
# include <type_traits>
#endif
namespace boost { namespace unordered { namespace detail {
////////////////////////////////////////////////////////////////////////////
// Integral_constrant, true_type, false_type
//
// Uses the standard versions if available.
#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
using std::integral_constant;
using std::true_type;
using std::false_type;
#else
template <typename T, T Value>
struct integral_constant { enum { value = Value }; };
typedef boost::unordered::detail::integral_constant<bool, true> true_type;
typedef boost::unordered::detail::integral_constant<bool, false> false_type;
#endif
////////////////////////////////////////////////////////////////////////////
// Explicitly call a destructor
#if defined(BOOST_MSVC)
#pragma warning(push)
#pragma warning(disable:4100) // unreferenced formal parameter
#endif
namespace func {
template <class T>
inline void destroy(T* x) {
x->~T();
}
}
#if defined(BOOST_MSVC)
#pragma warning(pop)
#endif
////////////////////////////////////////////////////////////////////////////
// Expression test mechanism
//
// When SFINAE expressions are available, define
// BOOST_UNORDERED_HAS_FUNCTION which can check if a function call is
// supported by a class, otherwise define BOOST_UNORDERED_HAS_MEMBER which
// can detect if a class has the specified member, but not that it has the
// correct type, this is good enough for a passable impression of
// allocator_traits.
#if !defined(BOOST_NO_SFINAE_EXPR)
template <typename T, long unsigned int> struct expr_test;
template <typename T> struct expr_test<T, sizeof(char)> : T {};
# define BOOST_UNORDERED_CHECK_EXPRESSION(count, result, expression) \
template <typename U> \
static typename boost::unordered::detail::expr_test< \
BOOST_PP_CAT(choice, result), \
sizeof(for_expr_test(( \
(expression), \
0)))>::type test( \
BOOST_PP_CAT(choice, count))
# define BOOST_UNORDERED_DEFAULT_EXPRESSION(count, result) \
template <typename U> \
static BOOST_PP_CAT(choice, result)::type test( \
BOOST_PP_CAT(choice, count))
# define BOOST_UNORDERED_HAS_FUNCTION(name, thing, args, _) \
struct BOOST_PP_CAT(has_, name) \
{ \
template <typename U> static char for_expr_test(U const&); \
BOOST_UNORDERED_CHECK_EXPRESSION(1, 1, \
boost::unordered::detail::make< thing >().name args); \
BOOST_UNORDERED_DEFAULT_EXPRESSION(2, 2); \
\
enum { value = sizeof(test<T>(choose())) == sizeof(choice1::type) };\
}
#else
template <typename T> struct identity { typedef T type; };
# define BOOST_UNORDERED_CHECK_MEMBER(count, result, name, member) \
\
typedef typename boost::unordered::detail::identity<member>::type \
BOOST_PP_CAT(check, count); \
\
template <BOOST_PP_CAT(check, count) e> \
struct BOOST_PP_CAT(test, count) { \
typedef BOOST_PP_CAT(choice, result) type; \
}; \
\
template <class U> static typename \
BOOST_PP_CAT(test, count)<&U::name>::type \
test(BOOST_PP_CAT(choice, count))
# define BOOST_UNORDERED_DEFAULT_MEMBER(count, result) \
template <class U> static BOOST_PP_CAT(choice, result)::type \
test(BOOST_PP_CAT(choice, count))
# define BOOST_UNORDERED_HAS_MEMBER(name) \
struct BOOST_PP_CAT(has_, name) \
{ \
struct impl { \
struct base_mixin { int name; }; \
struct base : public T, public base_mixin {}; \
\
BOOST_UNORDERED_CHECK_MEMBER(1, 1, name, int base_mixin::*); \
BOOST_UNORDERED_DEFAULT_MEMBER(2, 2); \
\
enum { value = sizeof(choice2::type) == \
sizeof(test<base>(choose())) \
}; \
}; \
\
enum { value = impl::value }; \
}
#endif
}}}
////////////////////////////////////////////////////////////////////////////////
//
// Allocator traits
//
// First our implementation, then later light wrappers around the alternatives
#if BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 0
# include <boost/limits.hpp>
# include <boost/utility/enable_if.hpp>
# include <boost/pointer_to_other.hpp>
# if defined(BOOST_NO_SFINAE_EXPR)
# include <boost/type_traits/is_same.hpp>
# endif
# if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && \
!defined(BOOST_NO_SFINAE_EXPR)
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 1
# else
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 0
# endif
namespace boost { namespace unordered { namespace detail {
template <typename Alloc, typename T>
struct rebind_alloc;
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template <template<typename, typename...> class Alloc,
typename U, typename T, typename... Args>
struct rebind_alloc<Alloc<U, Args...>, T>
{
typedef Alloc<T, Args...> type;
};
#else
template <
template<typename> class Alloc,
typename U, typename T>
struct rebind_alloc<Alloc<U>, T>
{
typedef Alloc<T> type;
};
template <
template<typename, typename> class Alloc,
typename U, typename T,
typename A0>
struct rebind_alloc<Alloc<U, A0>, T>
{
typedef Alloc<T, A0> type;
};
template <
template<typename, typename, typename> class Alloc,
typename U, typename T,
typename A0, typename A1>
struct rebind_alloc<Alloc<U, A0, A1>, T>
{
typedef Alloc<T, A0, A1> type;
};
#endif
template <typename Alloc, typename T>
struct rebind_wrap
{
template <typename X>
static choice1::type test(choice1,
typename X::BOOST_NESTED_TEMPLATE rebind<T>::other* = 0);
template <typename X>
static choice2::type test(choice2, void* = 0);
enum { value = (1 == sizeof(test<Alloc>(choose()))) };
struct fallback {
template <typename U>
struct rebind {
typedef typename rebind_alloc<Alloc, T>::type other;
};
};
typedef typename boost::detail::if_true<value>::
BOOST_NESTED_TEMPLATE then<Alloc, fallback>
::type::BOOST_NESTED_TEMPLATE rebind<T>::other type;
};
# if defined(BOOST_MSVC) && BOOST_MSVC <= 1400
# define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname) \
template <typename Tp, typename Default> \
struct default_type_ ## tname { \
\
template <typename X> \
static choice1::type test(choice1, typename X::tname* = 0); \
\
template <typename X> \
static choice2::type test(choice2, void* = 0); \
\
struct DefaultWrap { typedef Default tname; }; \
\
enum { value = (1 == sizeof(test<Tp>(choose()))) }; \
\
typedef typename boost::detail::if_true<value>:: \
BOOST_NESTED_TEMPLATE then<Tp, DefaultWrap> \
::type::tname type; \
}
# else
template <typename T, typename T2>
struct sfinae : T2 {};
# define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname) \
template <typename Tp, typename Default> \
struct default_type_ ## tname { \
\
template <typename X> \
static typename boost::unordered::detail::sfinae< \
typename X::tname, choice1>::type \
test(choice1); \
\
template <typename X> \
static choice2::type test(choice2); \
\
struct DefaultWrap { typedef Default tname; }; \
\
enum { value = (1 == sizeof(test<Tp>(choose()))) }; \
\
typedef typename boost::detail::if_true<value>:: \
BOOST_NESTED_TEMPLATE then<Tp, DefaultWrap> \
::type::tname type; \
}
# endif
# define BOOST_UNORDERED_DEFAULT_TYPE(T,tname, arg) \
typename default_type_ ## tname<T, arg>::type
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(pointer);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(const_pointer);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(void_pointer);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(const_void_pointer);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(difference_type);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(size_type);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_copy_assignment);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_move_assignment);
BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_swap);
# if !defined(BOOST_NO_SFINAE_EXPR)
template <typename T>
BOOST_UNORDERED_HAS_FUNCTION(
select_on_container_copy_construction, U const, (), 0
);
template <typename T>
BOOST_UNORDERED_HAS_FUNCTION(
max_size, U const, (), 0
);
# if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template <typename T, typename ValueType, typename... Args>
BOOST_UNORDERED_HAS_FUNCTION(
construct, U, (
boost::unordered::detail::make<ValueType*>(),
boost::unordered::detail::make<Args const>()...), 2
);
# else
template <typename T, typename ValueType>
BOOST_UNORDERED_HAS_FUNCTION(
construct, U, (
boost::unordered::detail::make<ValueType*>(),
boost::unordered::detail::make<ValueType const>()), 2
);
# endif
template <typename T, typename ValueType>
BOOST_UNORDERED_HAS_FUNCTION(
destroy, U, (boost::unordered::detail::make<ValueType*>()), 1
);
# else
template <typename T>
BOOST_UNORDERED_HAS_MEMBER(select_on_container_copy_construction);
template <typename T>
BOOST_UNORDERED_HAS_MEMBER(max_size);
template <typename T, typename ValueType>
BOOST_UNORDERED_HAS_MEMBER(construct);
template <typename T, typename ValueType>
BOOST_UNORDERED_HAS_MEMBER(destroy);
# endif
namespace func
{
template <typename Alloc>
inline Alloc call_select_on_container_copy_construction(const Alloc& rhs,
typename boost::enable_if_c<
boost::unordered::detail::
has_select_on_container_copy_construction<Alloc>::value, void*
>::type = 0)
{
return rhs.select_on_container_copy_construction();
}
template <typename Alloc>
inline Alloc call_select_on_container_copy_construction(const Alloc& rhs,
typename boost::disable_if_c<
boost::unordered::detail::
has_select_on_container_copy_construction<Alloc>::value, void*
>::type = 0)
{
return rhs;
}
template <typename SizeType, typename Alloc>
inline SizeType call_max_size(const Alloc& a,
typename boost::enable_if_c<
boost::unordered::detail::has_max_size<Alloc>::value, void*
>::type = 0)
{
return a.max_size();
}
template <typename SizeType, typename Alloc>
inline SizeType call_max_size(const Alloc&, typename boost::disable_if_c<
boost::unordered::detail::has_max_size<Alloc>::value, void*
>::type = 0)
{
return (std::numeric_limits<SizeType>::max)();
}
} // namespace func.
template <typename Alloc>
struct allocator_traits
{
typedef Alloc allocator_type;
typedef typename Alloc::value_type value_type;
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, pointer, value_type*)
pointer;
template <typename T>
struct pointer_to_other : boost::pointer_to_other<pointer, T> {};
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, const_pointer,
typename pointer_to_other<const value_type>::type)
const_pointer;
//typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, void_pointer,
// typename pointer_to_other<void>::type)
// void_pointer;
//
//typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, const_void_pointer,
// typename pointer_to_other<const void>::type)
// const_void_pointer;
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, difference_type,
std::ptrdiff_t) difference_type;
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, size_type, std::size_t)
size_type;
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template <typename T>
using rebind_alloc = typename rebind_wrap<Alloc, T>::type;
template <typename T>
using rebind_traits =
boost::unordered::detail::allocator_traits<rebind_alloc<T> >;
#endif
static pointer allocate(Alloc& a, size_type n)
{ return a.allocate(n); }
// I never use this, so I'll just comment it out for now.
//
//static pointer allocate(Alloc& a, size_type n,
// const_void_pointer hint)
// { return DEFAULT_FUNC(allocate, pointer)(a, n, hint); }
static void deallocate(Alloc& a, pointer p, size_type n)
{ a.deallocate(p, n); }
public:
# if BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT
template <typename T, typename... Args>
static typename boost::enable_if_c<
boost::unordered::detail::has_construct<Alloc, T, Args...>
::value>::type
construct(Alloc& a, T* p, BOOST_FWD_REF(Args)... x)
{
a.construct(p, boost::forward<Args>(x)...);
}
template <typename T, typename... Args>
static typename boost::disable_if_c<
boost::unordered::detail::has_construct<Alloc, T, Args...>
::value>::type
construct(Alloc&, T* p, BOOST_FWD_REF(Args)... x)
{
new (static_cast<void*>(p)) T(boost::forward<Args>(x)...);
}
template <typename T>
static typename boost::enable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
destroy(Alloc& a, T* p)
{
a.destroy(p);
}
template <typename T>
static typename boost::disable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
destroy(Alloc&, T* p)
{
boost::unordered::detail::func::destroy(p);
}
# elif !defined(BOOST_NO_SFINAE_EXPR)
template <typename T>
static typename boost::enable_if_c<
boost::unordered::detail::has_construct<Alloc, T>::value>::type
construct(Alloc& a, T* p, T const& x)
{
a.construct(p, x);
}
template <typename T>
static typename boost::disable_if_c<
boost::unordered::detail::has_construct<Alloc, T>::value>::type
construct(Alloc&, T* p, T const& x)
{
new (static_cast<void*>(p)) T(x);
}
template <typename T>
static typename boost::enable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
destroy(Alloc& a, T* p)
{
a.destroy(p);
}
template <typename T>
static typename boost::disable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
destroy(Alloc&, T* p)
{
boost::unordered::detail::func::destroy(p);
}
# else
// If we don't have SFINAE expressions, only call construct for the
// copy constructor for the allocator's value_type - as that's
// the only construct method that old fashioned allocators support.
template <typename T>
static void construct(Alloc& a, T* p, T const& x,
typename boost::enable_if_c<
boost::unordered::detail::has_construct<Alloc, T>::value &&
boost::is_same<T, value_type>::value,
void*>::type = 0)
{
a.construct(p, x);
}
template <typename T>
static void construct(Alloc&, T* p, T const& x,
typename boost::disable_if_c<
boost::unordered::detail::has_construct<Alloc, T>::value &&
boost::is_same<T, value_type>::value,
void*>::type = 0)
{
new (static_cast<void*>(p)) T(x);
}
template <typename T>
static void destroy(Alloc& a, T* p,
typename boost::enable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value &&
boost::is_same<T, value_type>::value,
void*>::type = 0)
{
a.destroy(p);
}
template <typename T>
static void destroy(Alloc&, T* p,
typename boost::disable_if_c<
boost::unordered::detail::has_destroy<Alloc, T>::value &&
boost::is_same<T, value_type>::value,
void*>::type = 0)
{
boost::unordered::detail::func::destroy(p);
}
# endif
static size_type max_size(const Alloc& a)
{
return boost::unordered::detail::func::
call_max_size<size_type>(a);
}
// Allocator propagation on construction
static Alloc select_on_container_copy_construction(Alloc const& rhs)
{
return boost::unordered::detail::func::
call_select_on_container_copy_construction(rhs);
}
// Allocator propagation on assignment and swap.
// Return true if lhs is modified.
typedef BOOST_UNORDERED_DEFAULT_TYPE(
Alloc, propagate_on_container_copy_assignment, false_type)
propagate_on_container_copy_assignment;
typedef BOOST_UNORDERED_DEFAULT_TYPE(
Alloc,propagate_on_container_move_assignment, false_type)
propagate_on_container_move_assignment;
typedef BOOST_UNORDERED_DEFAULT_TYPE(
Alloc,propagate_on_container_swap,false_type)
propagate_on_container_swap;
};
}}}
# undef BOOST_UNORDERED_DEFAULT_TYPE_TMPLT
# undef BOOST_UNORDERED_DEFAULT_TYPE
////////////////////////////////////////////////////////////////////////////////
//
// std::allocator_traits
#elif BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 1
# include <memory>
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 1
namespace boost { namespace unordered { namespace detail {
template <typename Alloc>
struct allocator_traits : std::allocator_traits<Alloc> {};
template <typename Alloc, typename T>
struct rebind_wrap
{
typedef typename std::allocator_traits<Alloc>::
template rebind_alloc<T> type;
};
}}}
////////////////////////////////////////////////////////////////////////////////
//
// boost::container::allocator_traits
#elif BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 2
# include <boost/container/allocator_traits.hpp>
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 0
namespace boost { namespace unordered { namespace detail {
template <typename Alloc>
struct allocator_traits :
boost::container::allocator_traits<Alloc> {};
template <typename Alloc, typename T>
struct rebind_wrap :
boost::container::allocator_traits<Alloc>::
template portable_rebind_alloc<T>
{};
}}}
#else
#error "Invalid BOOST_UNORDERED_USE_ALLOCATOR_TRAITS value."
#endif
namespace boost { namespace unordered { namespace detail { namespace func {
////////////////////////////////////////////////////////////////////////////
// call_construct
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
# if BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT
template <typename Alloc, typename T, typename... Args>
inline void call_construct(Alloc& alloc, T* address,
BOOST_FWD_REF(Args)... args)
{
boost::unordered::detail::allocator_traits<Alloc>::construct(alloc,
address, boost::forward<Args>(args)...);
}
template <typename Alloc, typename T>
inline void call_destroy(Alloc& alloc, T* x) {
boost::unordered::detail::allocator_traits<Alloc>::destroy(alloc, x);
}
# else
template <typename Alloc, typename T, typename... Args>
inline void call_construct(Alloc&, T* address,
BOOST_FWD_REF(Args)... args)
{
new((void*) address) T(boost::forward<Args>(args)...);
}
template <typename Alloc, typename T>
inline void call_destroy(Alloc&, T* x) {
boost::unordered::detail::func::destroy(x);
}
# endif
#else
template <typename Alloc, typename T>
inline void call_construct(Alloc&, T* address)
{
new ((void*) address) T();
}
template <typename Alloc, typename T, typename A0>
inline void call_construct(Alloc&, T* address,
BOOST_FWD_REF(A0) a0)
{
new ((void*) address) T(boost::forward<A0>(a0));
}
template <typename Alloc, typename T>
inline void call_destroy(Alloc&, T* x) {
boost::unordered::detail::func::destroy(x);
}
#endif
////////////////////////////////////////////////////////////////////////////
// Construct from tuple
//
// Used for piecewise construction.
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
template<typename Alloc, typename T> \
void construct_from_tuple(Alloc& alloc, T* ptr, namespace_ tuple<>) \
{ \
boost::unordered::detail::func::call_construct(alloc, ptr); \
} \
\
BOOST_PP_REPEAT_FROM_TO(1, n, \
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
template<typename Alloc, typename T, \
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
void construct_from_tuple(Alloc& alloc, T* ptr, \
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
{ \
boost::unordered::detail::func::call_construct(alloc, ptr, \
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
); \
}
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
namespace_ get<n>(x)
#elif !defined(__SUNPRO_CC)
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
template<typename Alloc, typename T> \
void construct_from_tuple(Alloc&, T* ptr, namespace_ tuple<>) \
{ \
new ((void*) ptr) T(); \
} \
\
BOOST_PP_REPEAT_FROM_TO(1, n, \
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
template<typename Alloc, typename T, \
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
void construct_from_tuple(Alloc&, T* ptr, \
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
{ \
new ((void*) ptr) T( \
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
); \
}
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
namespace_ get<n>(x)
#else
template <int N> struct length {};
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
template<typename Alloc, typename T> \
void construct_from_tuple_impl( \
boost::unordered::detail::func::length<0>, Alloc&, T* ptr, \
namespace_ tuple<>) \
{ \
new ((void*) ptr) T(); \
} \
\
BOOST_PP_REPEAT_FROM_TO(1, n, \
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
template<typename Alloc, typename T, \
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
void construct_from_tuple_impl( \
boost::unordered::detail::func::length<n>, Alloc&, T* ptr, \
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
{ \
new ((void*) ptr) T( \
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
); \
}
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
namespace_ get<n>(x)
#endif
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(10, boost::)
#if !defined(__SUNPRO_CC) && !defined(BOOST_NO_CXX11_HDR_TUPLE)
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(10, std::)
#endif
#undef BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE
#undef BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL
#undef BOOST_UNORDERED_GET_TUPLE_ARG
#if defined(__SUNPRO_CC)
template <typename Alloc, typename T, typename Tuple>
void construct_from_tuple(Alloc& alloc, T* ptr, Tuple const& x)
{
construct_from_tuple_impl(
boost::unordered::detail::func::length<
boost::tuples::length<Tuple>::value>(),
alloc, ptr, x);
}
#endif
////////////////////////////////////////////////////////////////////////////
// Trait to check for piecewise construction.
template <typename A0>
struct use_piecewise {
static choice1::type test(choice1,
boost::unordered::piecewise_construct_t);
static choice2::type test(choice2, ...);
enum { value = sizeof(choice1::type) ==
sizeof(test(choose(), boost::unordered::detail::make<A0>())) };
};
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
////////////////////////////////////////////////////////////////////////////
// Construct from variadic parameters
// For the standard pair constructor.
template <typename Alloc, typename T, typename... Args>
inline void construct_from_args(Alloc& alloc, T* address,
BOOST_FWD_REF(Args)... args)
{
boost::unordered::detail::func::call_construct(alloc,
address, boost::forward<Args>(args)...);
}
// Special case for piece_construct
//
// TODO: When possible, it might be better to use std::pair's
// constructor for std::piece_construct with std::tuple.
template <typename Alloc, typename A, typename B,
typename A0, typename A1, typename A2>
inline typename enable_if<use_piecewise<A0>, void>::type
construct_from_args(Alloc& alloc, std::pair<A, B>* address,
BOOST_FWD_REF(A0), BOOST_FWD_REF(A1) a1, BOOST_FWD_REF(A2) a2)
{
boost::unordered::detail::func::construct_from_tuple(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(address->first)),
boost::forward<A1>(a1));
boost::unordered::detail::func::construct_from_tuple(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(address->second)),
boost::forward<A2>(a2));
}
#else // BOOST_NO_CXX11_VARIADIC_TEMPLATES
////////////////////////////////////////////////////////////////////////////
// Construct from emplace_args
// Explicitly write out first three overloads for the sake of sane
// error messages.
template <typename Alloc, typename T, typename A0>
inline void construct_from_args(Alloc&, T* address,
emplace_args1<A0> const& args)
{
new((void*) address) T(boost::forward<A0>(args.a0));
}
template <typename Alloc, typename T, typename A0, typename A1>
inline void construct_from_args(Alloc&, T* address,
emplace_args2<A0, A1> const& args)
{
new((void*) address) T(
boost::forward<A0>(args.a0),
boost::forward<A1>(args.a1)
);
}
template <typename Alloc, typename T, typename A0, typename A1, typename A2>
inline void construct_from_args(Alloc&, T* address,
emplace_args3<A0, A1, A2> const& args)
{
new((void*) address) T(
boost::forward<A0>(args.a0),
boost::forward<A1>(args.a1),
boost::forward<A2>(args.a2)
);
}
// Use a macro for the rest.
#define BOOST_UNORDERED_CONSTRUCT_IMPL(z, num_params, _) \
template < \
typename Alloc, typename T, \
BOOST_PP_ENUM_PARAMS_Z(z, num_params, typename A) \
> \
inline void construct_from_args(Alloc&, T* address, \
boost::unordered::detail::BOOST_PP_CAT(emplace_args,num_params) < \
BOOST_PP_ENUM_PARAMS_Z(z, num_params, A) \
> const& args) \
{ \
new((void*) address) T( \
BOOST_PP_ENUM_##z(num_params, BOOST_UNORDERED_CALL_FORWARD, \
args.a)); \
}
BOOST_PP_REPEAT_FROM_TO(4, BOOST_UNORDERED_EMPLACE_LIMIT,
BOOST_UNORDERED_CONSTRUCT_IMPL, _)
#undef BOOST_UNORDERED_CONSTRUCT_IMPL
// Construct with piece_construct
template <typename Alloc, typename A, typename B,
typename A0, typename A1, typename A2>
inline void construct_from_args(Alloc& alloc, std::pair<A, B>* address,
boost::unordered::detail::emplace_args3<A0, A1, A2> const& args,
typename enable_if<use_piecewise<A0>, void*>::type = 0)
{
boost::unordered::detail::func::construct_from_tuple(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(address->first)),
args.a1);
boost::unordered::detail::func::construct_from_tuple(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(address->second)),
args.a2);
}
#endif // BOOST_NO_CXX11_VARIADIC_TEMPLATES
}}}}
namespace boost { namespace unordered { namespace detail {
///////////////////////////////////////////////////////////////////
//
// Node construction
template <typename NodeAlloc>
struct node_constructor
{
typedef NodeAlloc node_allocator;
typedef boost::unordered::detail::allocator_traits<NodeAlloc>
node_allocator_traits;
typedef typename node_allocator_traits::value_type node;
typedef typename node_allocator_traits::pointer node_pointer;
typedef typename node::value_type value_type;
node_allocator& alloc_;
node_pointer node_;
bool node_constructed_;
node_constructor(node_allocator& n) :
alloc_(n),
node_(),
node_constructed_(false)
{
}
~node_constructor();
void create_node();
// no throw
node_pointer release()
{
BOOST_ASSERT(node_ && node_constructed_);
node_pointer p = node_;
node_ = node_pointer();
return p;
}
void reclaim(node_pointer p) {
BOOST_ASSERT(!node_);
node_ = p;
node_constructed_ = true;
boost::unordered::detail::func::call_destroy(alloc_,
node_->value_ptr());
}
private:
node_constructor(node_constructor const&);
node_constructor& operator=(node_constructor const&);
};
template <typename Alloc>
node_constructor<Alloc>::~node_constructor()
{
if (node_) {
if (node_constructed_) {
boost::unordered::detail::func::destroy(
boost::addressof(*node_));
}
node_allocator_traits::deallocate(alloc_, node_, 1);
}
}
template <typename Alloc>
void node_constructor<Alloc>::create_node()
{
BOOST_ASSERT(!node_);
node_constructed_ = false;
node_ = node_allocator_traits::allocate(alloc_, 1);
new ((void*) boost::addressof(*node_)) node();
node_->init(node_);
node_constructed_ = true;
}
template <typename NodeAlloc>
struct node_tmp
{
typedef boost::unordered::detail::allocator_traits<NodeAlloc>
node_allocator_traits;
typedef typename node_allocator_traits::pointer node_pointer;
NodeAlloc& alloc_;
node_pointer node_;
explicit node_tmp(node_pointer n, NodeAlloc& a):
alloc_(a),
node_(n)
{
}
~node_tmp();
// no throw
node_pointer release()
{
node_pointer p = node_;
node_ = node_pointer();
return p;
}
};
template <typename Alloc>
node_tmp<Alloc>::~node_tmp()
{
if (node_) {
boost::unordered::detail::func::call_destroy(alloc_,
node_->value_ptr());
boost::unordered::detail::func::destroy(
boost::addressof(*node_));
node_allocator_traits::deallocate(alloc_, node_, 1);
}
}
}}}
namespace boost { namespace unordered { namespace detail { namespace func {
// Some nicer construct_node functions, might try to
// improve implementation later.
template <typename Alloc, BOOST_UNORDERED_EMPLACE_TEMPLATE>
inline typename boost::unordered::detail::allocator_traits<Alloc>::pointer
construct_node_from_args(Alloc& alloc, BOOST_UNORDERED_EMPLACE_ARGS)
{
node_constructor<Alloc> a(alloc);
a.create_node();
construct_from_args(alloc, a.node_->value_ptr(),
BOOST_UNORDERED_EMPLACE_FORWARD);
return a.release();
}
template <typename Alloc, typename U>
inline typename boost::unordered::detail::allocator_traits<Alloc>::pointer
construct_node(Alloc& alloc, BOOST_FWD_REF(U) x)
{
node_constructor<Alloc> a(alloc);
a.create_node();
boost::unordered::detail::func::call_construct(
alloc, a.node_->value_ptr(), boost::forward<U>(x));
return a.release();
}
// TODO: When possible, it might be better to use std::pair's
// constructor for std::piece_construct with std::tuple.
template <typename Alloc, typename Key>
inline typename boost::unordered::detail::allocator_traits<Alloc>::pointer
construct_node_pair(Alloc& alloc, BOOST_FWD_REF(Key) k)
{
node_constructor<Alloc> a(alloc);
a.create_node();
boost::unordered::detail::func::call_construct(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(a.node_->value_ptr()->first)),
boost::forward<Key>(k));
boost::unordered::detail::func::call_construct(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(a.node_->value_ptr()->second)));
return a.release();
}
template <typename Alloc, typename Key, typename Mapped>
inline typename boost::unordered::detail::allocator_traits<Alloc>::pointer
construct_node_pair(Alloc& alloc, BOOST_FWD_REF(Key) k, BOOST_FWD_REF(Mapped) m)
{
node_constructor<Alloc> a(alloc);
a.create_node();
boost::unordered::detail::func::call_construct(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(a.node_->value_ptr()->first)),
boost::forward<Key>(k));
boost::unordered::detail::func::call_construct(alloc,
boost::unordered::detail::func::const_cast_pointer(
boost::addressof(a.node_->value_ptr()->second)),
boost::forward<Mapped>(m));
return a.release();
}
}}}}
#if defined(BOOST_MSVC)
#pragma warning(pop)
#endif
#endif