forked from boostorg/unordered
		
	To make it clear that they should only be used to construct and destroy the value, and not nodes or buckets. [SVN r80223]
		
			
				
	
	
		
			1242 lines
		
	
	
		
			47 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			1242 lines
		
	
	
		
			47 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| 
 | |
| // Copyright 2005-2011 Daniel James.
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| // Copyright 2009 Pablo Halpern.
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| // Distributed under the Boost Software License, Version 1.0. (See accompanying
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| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 
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| //  See http://www.boost.org/libs/unordered for documentation
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| 
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| #ifndef BOOST_UNORDERED_ALLOCATE_HPP
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| #define BOOST_UNORDERED_ALLOCATE_HPP
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| 
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| #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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| # pragma once
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| #endif
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| 
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| #include <boost/unordered/detail/fwd.hpp>
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| #include <boost/move/move.hpp>
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| #include <boost/preprocessor/cat.hpp>
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| #include <boost/preprocessor/inc.hpp>
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| #include <boost/preprocessor/dec.hpp>
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| #include <boost/preprocessor/repetition/enum.hpp>
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| #include <boost/preprocessor/repetition/enum_params.hpp>
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| #include <boost/preprocessor/repetition/enum_binary_params.hpp>
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| #include <boost/preprocessor/repetition/repeat_from_to.hpp>
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| #include <boost/type_traits/is_class.hpp>
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| #include <boost/type_traits/add_lvalue_reference.hpp>
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| #include <boost/tuple/tuple.hpp>
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| #include <boost/utility/enable_if.hpp>
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| #include <boost/utility/addressof.hpp>
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| #include <boost/detail/select_type.hpp>
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| #include <boost/assert.hpp>
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| #include <utility>
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| 
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| #if !defined(BOOST_NO_CXX11_HDR_TUPLE)
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| #include <tuple>
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| #endif
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| 
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| #if defined(BOOST_MSVC)
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| #pragma warning(push)
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| #pragma warning(disable:4512) // assignment operator could not be generated.
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| #pragma warning(disable:4345) // behavior change: an object of POD type
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|                               // constructed with an initializer of the form ()
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|                               // will be default-initialized.
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| #endif
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| 
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| #define BOOST_UNORDERED_EMPLACE_LIMIT 10
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| 
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| namespace boost { namespace unordered { namespace detail {
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| 
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|     ////////////////////////////////////////////////////////////////////////////
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|     // Bits and pieces for implementing traits
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| 
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|     template <typename T> typename boost::add_lvalue_reference<T>::type make();
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|     struct choice9 { typedef char (&type)[9]; };
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|     struct choice8 : choice9 { typedef char (&type)[8]; };
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|     struct choice7 : choice8 { typedef char (&type)[7]; };
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|     struct choice6 : choice7 { typedef char (&type)[6]; };
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|     struct choice5 : choice6 { typedef char (&type)[5]; };
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|     struct choice4 : choice5 { typedef char (&type)[4]; };
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|     struct choice3 : choice4 { typedef char (&type)[3]; };
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|     struct choice2 : choice3 { typedef char (&type)[2]; };
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|     struct choice1 : choice2 { typedef char (&type)[1]; };
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|     choice1 choose();
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| 
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|     typedef choice1::type yes_type;
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|     typedef choice2::type no_type;
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| 
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|     struct private_type
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|     {
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|        private_type const &operator,(int) const;
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|     };
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| 
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|     template <typename T>
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|     no_type is_private_type(T const&);
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|     yes_type is_private_type(private_type const&);
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| 
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|     struct convert_from_anything {
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|         template <typename T>
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|         convert_from_anything(T const&);
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|     };
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| 
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|     ////////////////////////////////////////////////////////////////////////////
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|     // emplace_args
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|     //
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|     // Either forwarding variadic arguments, or storing the arguments in
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|     // emplace_args##n
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| 
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| #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
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| 
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| #define BOOST_UNORDERED_EMPLACE_TEMPLATE typename... Args
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| #define BOOST_UNORDERED_EMPLACE_ARGS BOOST_FWD_REF(Args)... args
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| #define BOOST_UNORDERED_EMPLACE_FORWARD boost::forward<Args>(args)...
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| 
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| #define BOOST_UNORDERED_EMPLACE_ARGS1(a0) a0
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| #define BOOST_UNORDERED_EMPLACE_ARGS2(a0, a1) a0, a1
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| #define BOOST_UNORDERED_EMPLACE_ARGS3(a0, a1, a2) a0, a1, a2
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| 
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| #else
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| 
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| #define BOOST_UNORDERED_EMPLACE_TEMPLATE typename Args
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| #define BOOST_UNORDERED_EMPLACE_ARGS Args const& args
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| #define BOOST_UNORDERED_EMPLACE_FORWARD args
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| 
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| #define BOOST_UNORDERED_FWD_PARAM(z, n, a) \
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|     BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(a, n)
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| 
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| #define BOOST_UNORDERED_CALL_FORWARD(z, i, a) \
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|     boost::forward<BOOST_PP_CAT(A,i)>(BOOST_PP_CAT(a,i))
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| 
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| #define BOOST_UNORDERED_EARGS(z, n, _)                                      \
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|     template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)>                     \
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|     struct BOOST_PP_CAT(emplace_args, n)                                    \
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|     {                                                                       \
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|         BOOST_PP_REPEAT_##z(n, BOOST_UNORDERED_EARGS_MEMBER, _)             \
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|         BOOST_PP_CAT(emplace_args, n) (                                     \
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|             BOOST_PP_ENUM_BINARY_PARAMS_Z(z, n, Arg, b)                     \
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|         ) : BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_EARGS_INIT, _)             \
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|         {}                                                                  \
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|                                                                             \
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|     };                                                                      \
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|                                                                             \
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|     template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)>                     \
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|     inline BOOST_PP_CAT(emplace_args, n) <                                  \
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|         BOOST_PP_ENUM_PARAMS_Z(z, n, A)                                     \
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|     > create_emplace_args(                                                  \
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|         BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_FWD_PARAM, b)                  \
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|     )                                                                       \
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|     {                                                                       \
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|         BOOST_PP_CAT(emplace_args, n) <                                     \
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|             BOOST_PP_ENUM_PARAMS_Z(z, n, A)                                 \
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|         > e(BOOST_PP_ENUM_PARAMS_Z(z, n, b));                               \
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|         return e;                                                           \
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|     }
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| 
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| #define BOOST_UNORDERED_EMPLACE_ARGS1 create_emplace_args
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| #define BOOST_UNORDERED_EMPLACE_ARGS2 create_emplace_args
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| #define BOOST_UNORDERED_EMPLACE_ARGS3 create_emplace_args
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| 
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| #if defined(BOOST_NO_RVALUE_REFERENCES)
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| 
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| #define BOOST_UNORDERED_EARGS_MEMBER(z, n, _)                               \
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|     typedef BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(Arg, n);         \
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|     BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
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| 
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| #define BOOST_UNORDERED_EARGS_INIT(z, n, _)                                 \
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|     BOOST_PP_CAT(a, n)(                                                     \
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|         boost::forward<BOOST_PP_CAT(A,n)>(BOOST_PP_CAT(b, n)))
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| 
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| #else
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| 
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| #define BOOST_UNORDERED_EARGS_MEMBER(z, n, _)                               \
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|     typedef typename boost::add_lvalue_reference<BOOST_PP_CAT(A, n)>::type  \
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|         BOOST_PP_CAT(Arg, n);                                               \
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|     BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
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| 
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| #define BOOST_UNORDERED_EARGS_INIT(z, n, _)                                 \
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|     BOOST_PP_CAT(a, n)(BOOST_PP_CAT(b, n))
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| 
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| #endif
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| 
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| BOOST_PP_REPEAT_FROM_TO(1, BOOST_UNORDERED_EMPLACE_LIMIT, BOOST_UNORDERED_EARGS,
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|     _)
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| 
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| #undef BOOST_UNORDERED_DEFINE_EMPLACE_ARGS
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| #undef BOOST_UNORDERED_EARGS_MEMBER
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| #undef BOOST_UNORDERED_EARGS_INIT
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| 
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| #endif
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| 
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| }}}
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| 
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| ////////////////////////////////////////////////////////////////////////////////
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| //
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| // Pick which version of allocator_traits to use
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| //
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| // 0 = Own partial implementation
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| // 1 = std::allocator_traits
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| // 2 = boost::container::allocator_traits
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| 
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| #if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
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| #   if defined(__GXX_EXPERIMENTAL_CXX0X__) && \
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|             (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))
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| #       define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 0
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| #   elif defined(BOOST_MSVC)
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| #       if BOOST_MSVC < 1400
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|             // Use container's allocator_traits for older versions of Visual
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|             // C++ as I don't test with them.
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| #           define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 2
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| #       endif
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| #   endif
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| #endif
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| 
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| #if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
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| #   define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 0
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| #endif
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| 
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| ////////////////////////////////////////////////////////////////////////////////
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| //
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| // Some utilities for implementing allocator_traits, but useful elsewhere so
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| // they're always defined.
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| 
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| #if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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| #  include <type_traits>
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| #endif
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| 
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| namespace boost { namespace unordered { namespace detail {
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| 
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|     ////////////////////////////////////////////////////////////////////////////
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|     // Integral_constrant, true_type, false_type
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|     //
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|     // Uses the standard versions if available.
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| 
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| #if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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| 
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|     using std::integral_constant;
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|     using std::true_type;
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|     using std::false_type;
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| 
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| #else
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| 
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|     template <typename T, T Value>
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|     struct integral_constant { enum { value = Value }; };
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| 
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|     typedef boost::unordered::detail::integral_constant<bool, true> true_type;
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|     typedef boost::unordered::detail::integral_constant<bool, false> false_type;
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| 
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| #endif
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| 
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|     ////////////////////////////////////////////////////////////////////////////
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|     // Explicitly call a destructor
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| 
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| #if defined(BOOST_MSVC)
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| #pragma warning(push)
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| #pragma warning(disable:4100) // unreferenced formal parameter
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| #endif
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| 
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|     template <class T>
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|     inline void destroy(T* x) {
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|         x->~T();
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|     }
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| 
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| #if defined(BOOST_MSVC)
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| #pragma warning(pop)
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| #endif
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| 
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|     ////////////////////////////////////////////////////////////////////////////
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|     // Expression test mechanism
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|     //
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|     // When SFINAE expressions are available, define
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|     // BOOST_UNORDERED_HAS_FUNCTION which can check if a function call is
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|     // supported by a class, otherwise define BOOST_UNORDERED_HAS_MEMBER which
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|     // can detect if a class has the specified member, but not that it has the
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|     // correct type, this is good enough for a passable impression of
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|     // allocator_traits.
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| 
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| #if !defined(BOOST_NO_SFINAE_EXPR)
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| 
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|     template <typename T, unsigned int> struct expr_test;
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|     template <typename T> struct expr_test<T, sizeof(char)> : T {};
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|     template <typename U> static char for_expr_test(U const&);
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| 
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| #   define BOOST_UNORDERED_CHECK_EXPRESSION(count, result, expression)      \
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|         template <typename U>                                               \
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|         static typename boost::unordered::detail::expr_test<                \
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|             BOOST_PP_CAT(choice, result),                                   \
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|             sizeof(boost::unordered::detail::for_expr_test((                \
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|                 (expression),                                               \
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|             0)))>::type test(                                               \
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|             BOOST_PP_CAT(choice, count))
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| 
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| #   define BOOST_UNORDERED_DEFAULT_EXPRESSION(count, result)                \
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|         template <typename U>                                               \
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|         static BOOST_PP_CAT(choice, result)::type test(                     \
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|             BOOST_PP_CAT(choice, count))
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| 
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| #   define BOOST_UNORDERED_HAS_FUNCTION(name, thing, args, _)               \
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|     struct BOOST_PP_CAT(has_, name)                                         \
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|     {                                                                       \
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|         BOOST_UNORDERED_CHECK_EXPRESSION(1, 1,                              \
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|             boost::unordered::detail::make< thing >().name args);           \
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|         BOOST_UNORDERED_DEFAULT_EXPRESSION(2, 2);                           \
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|                                                                             \
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|         enum { value = sizeof(test<T>(choose())) == sizeof(choice1::type) };\
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|     }
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| 
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| #else
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| 
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|     template <typename T> struct identity { typedef T type; };
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| 
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| #   define BOOST_UNORDERED_CHECK_MEMBER(count, result, name, member)        \
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|                                                                             \
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|     typedef typename boost::unordered::detail::identity<member>::type       \
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|         BOOST_PP_CAT(check, count);                                         \
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|                                                                             \
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|     template <BOOST_PP_CAT(check, count) e>                                 \
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|     struct BOOST_PP_CAT(test, count) {                                      \
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|         typedef BOOST_PP_CAT(choice, result) type;                          \
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|     };                                                                      \
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|                                                                             \
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|     template <class U> static typename                                      \
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|         BOOST_PP_CAT(test, count)<&U::name>::type                           \
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|         test(BOOST_PP_CAT(choice, count))
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| 
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| #   define BOOST_UNORDERED_DEFAULT_MEMBER(count, result)                    \
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|     template <class U> static BOOST_PP_CAT(choice, result)::type            \
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|         test(BOOST_PP_CAT(choice, count))
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| 
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| #   define BOOST_UNORDERED_HAS_MEMBER(name)                                 \
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|     struct BOOST_PP_CAT(has_, name)                                         \
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|     {                                                                       \
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|         struct impl {                                                       \
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|             struct base_mixin { int name; };                                \
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|             struct base : public T, public base_mixin {};                   \
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|                                                                             \
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|             BOOST_UNORDERED_CHECK_MEMBER(1, 1, name, int base_mixin::*);    \
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|             BOOST_UNORDERED_DEFAULT_MEMBER(2, 2);                           \
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|                                                                             \
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|             enum { value = sizeof(choice2::type) ==                         \
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|                 sizeof(test<base>(choose()))                                \
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|             };                                                              \
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|         };                                                                  \
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|                                                                             \
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|         enum { value = impl::value };                                       \
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|     }
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| 
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| #endif
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| 
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| }}}
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| 
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| ////////////////////////////////////////////////////////////////////////////////
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| //
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| // Allocator traits
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| //
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| // First our implementation, then later light wrappers around the alternatives
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| 
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| #if BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 0
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| 
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| #   include <boost/limits.hpp>
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| #   include <boost/utility/enable_if.hpp>
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| #   include <boost/pointer_to_other.hpp>
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| #   if defined(BOOST_NO_SFINAE_EXPR)
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| #       include <boost/type_traits/is_same.hpp>
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| #   endif
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| 
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| #   if !defined(BOOST_NO_VARIADIC_TEMPLATES) && \
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|         !defined(BOOST_NO_SFINAE_EXPR)
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| #       define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 1
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| #   else
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| #       define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 0
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| #   endif
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| 
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| namespace boost { namespace unordered { namespace detail {
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| 
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|     // TODO: Does this match std::allocator_traits<Alloc>::rebind_alloc<T>?
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|     template <typename Alloc, typename T>
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|     struct rebind_wrap
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|     {
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|         typedef typename Alloc::BOOST_NESTED_TEMPLATE rebind<T>::other type;
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|     };
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| 
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| #   if defined(BOOST_MSVC) && BOOST_MSVC <= 1400
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| 
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| #       define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname)                    \
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|     template <typename Tp, typename Default>                                \
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|     struct default_type_ ## tname {                                         \
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|                                                                             \
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|         template <typename X>                                               \
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|         static choice1::type test(choice1, typename X::tname* = 0);         \
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|                                                                             \
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|         template <typename X>                                               \
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|         static choice2::type test(choice2, void* = 0);                      \
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|                                                                             \
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|         struct DefaultWrap { typedef Default tname; };                      \
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|                                                                             \
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|         enum { value = (1 == sizeof(test<Tp>(choose()))) };                 \
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|                                                                             \
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|         typedef typename boost::detail::if_true<value>::                    \
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|             BOOST_NESTED_TEMPLATE then<Tp, DefaultWrap>                     \
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|             ::type::tname type;                                             \
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|     }
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| 
 | |
| #   else
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| 
 | |
|     template <typename T, typename T2>
 | |
|     struct sfinae : T2 {};
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| 
 | |
| #       define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname)                    \
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|     template <typename Tp, typename Default>                                \
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|     struct default_type_ ## tname {                                         \
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|                                                                             \
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|         template <typename X>                                               \
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|         static typename boost::unordered::detail::sfinae<                   \
 | |
|                 typename X::tname, choice1>::type                           \
 | |
|             test(choice1);                                                  \
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|                                                                             \
 | |
|         template <typename X>                                               \
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|         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_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
 | |
| 
 | |
|     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)();
 | |
|     }
 | |
| 
 | |
|     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;
 | |
| 
 | |
|         // TODO: rebind_alloc and rebind_traits
 | |
| 
 | |
|         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 ((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::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 ((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::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 ((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::destroy(p);
 | |
|         }
 | |
| 
 | |
| #   endif
 | |
| 
 | |
|         static size_type max_size(const Alloc& a)
 | |
|         {
 | |
|             return boost::unordered::detail::call_max_size<size_type>(a);
 | |
|         }
 | |
| 
 | |
|         // Allocator propagation on construction
 | |
| 
 | |
|         static Alloc select_on_container_copy_construction(Alloc const& rhs)
 | |
|         {
 | |
|             return boost::unordered::detail::
 | |
|                 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 {
 | |
| 
 | |
|     ////////////////////////////////////////////////////////////////////////////
 | |
|     // call_construct
 | |
| 
 | |
| #if !defined(BOOST_NO_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 destroy_value_impl(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 destroy_value_impl(Alloc&, T* x) {
 | |
|         boost::unordered::detail::destroy(x);
 | |
|     }
 | |
| 
 | |
| 
 | |
| #   endif
 | |
| 
 | |
| #else
 | |
| 
 | |
|     template <typename Alloc, typename T>
 | |
|     inline void destroy_value_impl(Alloc&, T* x) {
 | |
|         boost::unordered::detail::destroy(x);
 | |
|     }
 | |
| 
 | |
| #endif
 | |
| 
 | |
|     ////////////////////////////////////////////////////////////////////////////
 | |
|     // Construct from tuple
 | |
|     //
 | |
|     // Used for piecewise construction.
 | |
| 
 | |
| #if !defined(BOOST_NO_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::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::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::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::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::length<
 | |
|                 boost::tuples::length<Tuple>::value>(),
 | |
|             alloc, ptr, x);
 | |
|     }
 | |
| 
 | |
| #endif
 | |
| 
 | |
|     ////////////////////////////////////////////////////////////////////////////
 | |
|     // SFINAE traits for construction.
 | |
| 
 | |
|     // Decide which construction method to use for a three argument
 | |
|     // call. Note that this is difficult to do using overloads because
 | |
|     // the arguments are packed into 'emplace_args3'.
 | |
|     //
 | |
|     // The decision is made on the first argument.
 | |
| 
 | |
| 
 | |
| #if defined(BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT)
 | |
|     template <typename A, typename B, typename A0>
 | |
|     struct emulation1 {
 | |
|         static choice1::type test(choice1, std::pair<A, B> const&);
 | |
|         static choice2::type test(choice2, A const&);
 | |
|         static choice3::type test(choice3, convert_from_anything const&);
 | |
| 
 | |
|         enum { value =
 | |
|             sizeof(test(choose(), boost::unordered::detail::make<A0>())) ==
 | |
|                 sizeof(choice2::type) };
 | |
|     };
 | |
| #endif
 | |
| 
 | |
|     template <typename A, typename B, typename A0>
 | |
|     struct check3_base {
 | |
|         static choice1::type test(choice1,
 | |
|             boost::unordered::piecewise_construct_t);
 | |
| 
 | |
| #if defined(BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT)
 | |
|         static choice2::type test(choice2, A const&);
 | |
| #endif
 | |
| 
 | |
|         static choice3::type test(choice3, ...);
 | |
| 
 | |
|         enum { value =
 | |
|             sizeof(test(choose(), boost::unordered::detail::make<A0>())) };
 | |
|     };
 | |
| 
 | |
|     template <typename A, typename B, typename A0>
 | |
|     struct piecewise3 {
 | |
|         enum { value = check3_base<A,B,A0>::value == sizeof(choice1::type) };
 | |
|     };
 | |
| 
 | |
| #if defined(BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT)
 | |
|     template <typename A, typename B, typename A0>
 | |
|     struct emulation3 {
 | |
|         enum { value = check3_base<A,B,A0>::value == sizeof(choice2::type) };
 | |
|     };
 | |
| 
 | |
| #endif
 | |
| 
 | |
| // TODO: Full construct?
 | |
| #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
 | |
| 
 | |
|     ////////////////////////////////////////////////////////////////////////////
 | |
|     // Construct from variadic parameters
 | |
| 
 | |
|     template <typename Alloc, typename T, typename... Args>
 | |
|     inline void construct_value_impl(Alloc& alloc, T* address,
 | |
|         BOOST_FWD_REF(Args)... args)
 | |
|     {
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             address, boost::forward<Args>(args)...);
 | |
|     }
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B,
 | |
|         typename A0, typename A1, typename A2>
 | |
|     inline typename enable_if<piecewise3<A, B, A0>, void>::type
 | |
|         construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
 | |
|             BOOST_FWD_REF(A0), BOOST_FWD_REF(A1) a1, BOOST_FWD_REF(A2) a2)
 | |
|     {
 | |
|         boost::unordered::detail::construct_from_tuple(alloc,
 | |
|             boost::addressof(address->first), boost::forward<A1>(a1));
 | |
|         boost::unordered::detail::construct_from_tuple(alloc,
 | |
|             boost::addressof(address->second), boost::forward<A2>(a2));
 | |
|     }
 | |
| 
 | |
| #if defined(BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT)
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B, typename A0>
 | |
|     inline typename enable_if<emulation1<A, B, A0>, void>::type
 | |
|         construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
 | |
|             BOOST_FWD_REF(A0) a0)
 | |
|     {
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->first),boost::forward<A0>(a0));
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->second));
 | |
|    }
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B,
 | |
|         typename A0, typename A1, typename A2>
 | |
|     inline typename enable_if<emulation3<A, B, A0>, void>::type
 | |
|         construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
 | |
|             BOOST_FWD_REF(A0) a0, BOOST_FWD_REF(A1) a1, BOOST_FWD_REF(A2) a2)
 | |
|     {
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->first),boost::forward<A0>(a0));
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->second),
 | |
|             boost::forward<A1>(a1),
 | |
|             boost::forward<A2>(a2));
 | |
|     }
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B,
 | |
|             typename A0, typename A1, typename A2, typename A3,
 | |
|             typename... Args>
 | |
|     inline void construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
 | |
|             BOOST_FWD_REF(A0) a0, BOOST_FWD_REF(A1) a1, BOOST_FWD_REF(A2) a2,
 | |
|             BOOST_FWD_REF(A3) a3, BOOST_FWD_REF(Args)... args)
 | |
|     {
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->first),boost::forward<A0>(a0));
 | |
|         boost::unordered::detail::call_construct(alloc,
 | |
|             boost::addressof(address->second),
 | |
|             boost::forward<A1>(a1),
 | |
|             boost::forward<A2>(a2),
 | |
|             boost::forward<A3>(a3),
 | |
|             boost::forward<Args>(args)...);
 | |
|     }
 | |
| 
 | |
| #endif // BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT
 | |
| #else // BOOST_NO_VARIADIC_TEMPLATES
 | |
| 
 | |
| ////////////////////////////////////////////////////////////////////////////////
 | |
| // Construct from emplace_args
 | |
| 
 | |
| #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_value_impl(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));                                                   \
 | |
|     }
 | |
| 
 | |
|     template <typename Alloc, typename T, typename A0>
 | |
|     inline void construct_value_impl(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_value_impl(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_value_impl(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)
 | |
|         );
 | |
|     }
 | |
| 
 | |
|     BOOST_PP_REPEAT_FROM_TO(4, BOOST_UNORDERED_EMPLACE_LIMIT,
 | |
|         BOOST_UNORDERED_CONSTRUCT_IMPL, _)
 | |
| 
 | |
| #undef BOOST_UNORDERED_CONSTRUCT_IMPL
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B,
 | |
|         typename A0, typename A1, typename A2>
 | |
|     inline void construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
 | |
|             boost::unordered::detail::emplace_args3<A0, A1, A2> const& args,
 | |
|             typename enable_if<piecewise3<A, B, A0>, void*>::type = 0)
 | |
|     {
 | |
|         boost::unordered::detail::construct_from_tuple(alloc,
 | |
|             boost::addressof(address->first), args.a1);
 | |
|         boost::unordered::detail::construct_from_tuple(alloc,
 | |
|             boost::addressof(address->second), args.a2);
 | |
|     }
 | |
| 
 | |
| #if defined(BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT)
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B, typename A0>
 | |
|     inline void construct_value_impl(Alloc&, std::pair<A, B>* address,
 | |
|             boost::unordered::detail::emplace_args1<A0> const& args,
 | |
|             typename enable_if<emulation1<A, B, A0>, void*>::type = 0)
 | |
|     {
 | |
|         new((void*) boost::addressof(address->first)) A(
 | |
|             boost::forward<A0>(args.a0));
 | |
|         new((void*) boost::addressof(address->second)) B();
 | |
|     }
 | |
| 
 | |
|     template <typename Alloc, typename A, typename B,
 | |
|         typename A0, typename A1, typename A2>
 | |
|     inline void construct_value_impl(Alloc&, std::pair<A, B>* address,
 | |
|             boost::unordered::detail::emplace_args3<A0, A1, A2> const& args,
 | |
|             typename enable_if<emulation3<A, B, A0>, void*>::type = 0)
 | |
|     {
 | |
|         new((void*) boost::addressof(address->first)) A(
 | |
|             boost::forward<A0>(args.a0));
 | |
|         new((void*) boost::addressof(address->second)) B(
 | |
|             boost::forward<A1>(args.a1),
 | |
|             boost::forward<A2>(args.a2));
 | |
|     }
 | |
| 
 | |
| #define BOOST_UNORDERED_CONSTRUCT_PAIR_IMPL(z, num_params, _)               \
 | |
|     template <typename Alloc, typename A, typename B,                       \
 | |
|         BOOST_PP_ENUM_PARAMS_Z(z, num_params, typename A)                   \
 | |
|     >                                                                       \
 | |
|     inline void construct_value_impl(Alloc&, std::pair<A, B>* address,      \
 | |
|         boost::unordered::detail::BOOST_PP_CAT(emplace_args, num_params) <  \
 | |
|                 BOOST_PP_ENUM_PARAMS_Z(z, num_params, A)                    \
 | |
|             > const& args)                                                  \
 | |
|     {                                                                       \
 | |
|         new((void*) boost::addressof(address->first)) A(                    \
 | |
|             boost::forward<A0>(args.a0));                                   \
 | |
|         new((void*) boost::addressof(address->second)) B(                   \
 | |
|             BOOST_PP_ENUM_##z(BOOST_PP_DEC(num_params),                     \
 | |
|                 BOOST_UNORDERED_CALL_FORWARD2, args.a));                    \
 | |
|     }
 | |
| 
 | |
| #define BOOST_UNORDERED_CALL_FORWARD2(z, i, a) \
 | |
|     BOOST_UNORDERED_CALL_FORWARD(z, BOOST_PP_INC(i), a)
 | |
| 
 | |
|     BOOST_UNORDERED_CONSTRUCT_PAIR_IMPL(1, 2, _)
 | |
|     BOOST_PP_REPEAT_FROM_TO(4, BOOST_UNORDERED_EMPLACE_LIMIT,
 | |
|         BOOST_UNORDERED_CONSTRUCT_PAIR_IMPL, _)
 | |
| 
 | |
| #undef BOOST_UNORDERED_CONSTRUCT_PAIR_IMPL
 | |
| #undef BOOST_UNORDERED_CALL_FORWARD2
 | |
| 
 | |
| #endif // BOOST_UNORDERED_DEPRECATED_PAIR_CONSTRUCT
 | |
| #endif // BOOST_NO_VARIADIC_TEMPLATES
 | |
| 
 | |
| }}}
 | |
| 
 | |
| ////////////////////////////////////////////////////////////////////////////////
 | |
| //
 | |
| // Some helper functions for allocating & constructing
 | |
| 
 | |
| namespace boost { namespace unordered { namespace detail {
 | |
| 
 | |
|     ////////////////////////////////////////////////////////////////////////////
 | |
|     //
 | |
|     // array_constructor
 | |
|     //
 | |
|     // Allocate and construct an array in an exception safe manner, and
 | |
|     // clean up if an exception is thrown before the container takes charge
 | |
|     // of it.
 | |
| 
 | |
|     template <typename Allocator>
 | |
|     struct array_constructor
 | |
|     {
 | |
|         typedef boost::unordered::detail::allocator_traits<Allocator> traits;
 | |
|         typedef typename traits::pointer pointer;
 | |
| 
 | |
|         Allocator& alloc_;
 | |
|         pointer ptr_;
 | |
|         pointer constructed_;
 | |
|         std::size_t length_;
 | |
| 
 | |
|         array_constructor(Allocator& a)
 | |
|             : alloc_(a), ptr_(), constructed_(), length_(0)
 | |
|         {
 | |
|             constructed_ = pointer();
 | |
|             ptr_ = pointer();
 | |
|         }
 | |
| 
 | |
|         ~array_constructor() {
 | |
|             if (ptr_) {
 | |
|                 for(pointer p = ptr_; p != constructed_; ++p)
 | |
|                     traits::destroy(alloc_, boost::addressof(*p));
 | |
| 
 | |
|                 traits::deallocate(alloc_, ptr_, length_);
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         template <typename V>
 | |
|         void construct(V const& v, std::size_t l)
 | |
|         {
 | |
|             BOOST_ASSERT(!ptr_);
 | |
|             length_ = l;
 | |
|             ptr_ = traits::allocate(alloc_, length_);
 | |
|             pointer end = ptr_ + static_cast<std::ptrdiff_t>(length_);
 | |
|             for(constructed_ = ptr_; constructed_ != end; ++constructed_)
 | |
|                 traits::construct(alloc_, boost::addressof(*constructed_), v);
 | |
|         }
 | |
| 
 | |
|         pointer get() const
 | |
|         {
 | |
|             return ptr_;
 | |
|         }
 | |
| 
 | |
|         pointer release()
 | |
|         {
 | |
|             pointer p(ptr_);
 | |
|             ptr_ = pointer();
 | |
|             return p;
 | |
|         }
 | |
| 
 | |
|     private:
 | |
| 
 | |
|         array_constructor(array_constructor const&);
 | |
|         array_constructor& operator=(array_constructor const&);
 | |
|     };
 | |
| }}}
 | |
| 
 | |
| #if defined(BOOST_MSVC)
 | |
| #pragma warning(pop)
 | |
| #endif
 | |
| 
 | |
| #endif
 |