74 lines
2.5 KiB
C++
Executable File
74 lines
2.5 KiB
C++
Executable File
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// 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/container for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_CONTAINER_USES_ALLOCATOR_FWD_HPP
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#define BOOST_CONTAINER_USES_ALLOCATOR_FWD_HPP
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#include <boost/container/detail/workaround.hpp>
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#include <boost/container/detail/std_fwd.hpp>
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//! \file
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//! This header forward declares boost::container::constructible_with_allocator_prefix,
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//! boost::container::constructible_with_allocator_suffix and
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//! boost::container::uses_allocator. Also defines the following types:
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namespace boost {
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namespace container {
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#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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template <int Dummy = 0>
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struct std_allocator_arg_holder
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{
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static ::std::allocator_arg_t *dummy;
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};
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template <int Dummy> //Silence null-reference compiler warnings
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::std::allocator_arg_t *std_allocator_arg_holder<Dummy>::dummy = reinterpret_cast< ::std::allocator_arg_t * >(0x1234);
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typedef const std::allocator_arg_t & allocator_arg_t;
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#else
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//! The allocator_arg_t struct is an empty structure type used as a unique type to
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//! disambiguate constructor and function overloading. Specifically, several types
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//! have constructors with allocator_arg_t as the first argument, immediately followed
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//! by an argument of a type that satisfies Allocator requirements
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typedef unspecified allocator_arg_t;
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#endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED
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//! The `erased_type` struct is an empty struct that serves as a placeholder for a type
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//! T in situations where the actual type T is determined at runtime. For example,
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//! the nested type, `allocator_type`, is an alias for `erased_type` in classes that
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//! use type-erased allocators.
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struct erased_type {};
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//! A instance of type
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//! allocator_arg_t
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static allocator_arg_t allocator_arg = BOOST_CONTAINER_DOC1ST(unspecified, *std_allocator_arg_holder<>::dummy);
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// @cond
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template <class T>
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struct constructible_with_allocator_suffix;
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template <class T>
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struct constructible_with_allocator_prefix;
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template <typename T, typename Allocator>
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struct uses_allocator;
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// @endcond
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}} // namespace boost { namespace container {
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#endif //BOOST_CONTAINER_USES_ALLOCATOR_HPP
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