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Ticket #7123: Forward declaration for scoped allocator customization traits.

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[SVN r79462]
This commit is contained in:
Ion Gaztañaga
2012-07-12 23:25:08 +00:00
parent 00285548d9
commit 24ec45bdff
2 changed files with 84 additions and 41 deletions
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42
include/boost/container/scoped_allocator.hpp
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@@ -23,6 +23,7 @@
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#include <boost/container/scoped_allocator_fwd.hpp>
#include <boost/type_traits/integral_constant.hpp>
#include <boost/container/allocator_traits.hpp>
#include <boost/container/detail/type_traits.hpp>
@@ -31,50 +32,9 @@
#include <boost/container/detail/pair.hpp>
#include <boost/move/move.hpp>
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
#include <boost/container/detail/preprocessor.hpp>
#endif
namespace boost { namespace container {
#if defined(BOOST_CONTAINER_PERFECT_FORWARDING)
#if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename OuterAlloc, typename ...InnerAllocs>
class scoped_allocator_adaptor;
#else // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename ...InnerAllocs>
class scoped_allocator_adaptor;
template <typename OuterAlloc, typename ...InnerAllocs>
class scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>;
#endif // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
#else // #if defined(BOOST_CONTAINER_PERFECT_FORWARDING) || defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
template <typename OuterAlloc
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT, container_detail::nat)
>
class scoped_allocator_adaptor;
#endif
//! The allocator_arg_t struct is an empty structure type used as a unique type to
//! disambiguate constructor and function overloading. Specifically, several types
//! have constructors with allocator_arg_t as the first argument, immediately followed
//! by an argument of a type that satisfies the Allocator requirements
struct allocator_arg_t{};
//! A instance of type allocator_arg_t
//!
static const allocator_arg_t allocator_arg = allocator_arg_t();
//! <b>Remark</b>: if a specialization is derived from true_type, indicates that T may be constructed
//! with an allocator as its last constructor argument. Ideally, all constructors of T (including the
//! copy and move constructors) should have a variant that accepts a final argument of

83
include/boost/container/scoped_allocator_fwd.hpp Normal file
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@@ -0,0 +1,83 @@
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2011-2012. 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/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_FWD_HPP
#define BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_FWD_HPP
#if (defined MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
#include <boost/container/detail/workaround.hpp>
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
#include <boost/container/detail/preprocessor.hpp>
#include <boost/container/detail/type_traits.hpp>
#endif
namespace boost { namespace container {
///@cond
#if !defined(BOOST_NO_VARIADIC_TEMPLATES)
#if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename OuterAlloc, typename ...InnerAllocs>
class scoped_allocator_adaptor;
#else // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
template <typename ...InnerAllocs>
class scoped_allocator_adaptor;
template <typename OuterAlloc, typename ...InnerAllocs>
class scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>;
#endif // #if !defined(BOOST_CONTAINER_UNIMPLEMENTED_PACK_EXPANSION_TO_FIXED_LIST)
#else // #if !defined(BOOST_NO_VARIADIC_TEMPLATES)
template <typename OuterAlloc
BOOST_PP_ENUM_TRAILING( BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS
, BOOST_CONTAINER_PP_TEMPLATE_PARAM_WITH_DEFAULT, container_detail::nat)
>
class scoped_allocator_adaptor;
#endif
///@endcond
//! The allocator_arg_t struct is an empty structure type used as a unique type to
//! disambiguate constructor and function overloading. Specifically, several types
//! have constructors with allocator_arg_t as the first argument, immediately followed
//! by an argument of a type that satisfies the Allocator requirements
struct allocator_arg_t{};
//! A instance of type allocator_arg_t
//!
static const allocator_arg_t allocator_arg = allocator_arg_t();
template <class T>
struct constructible_with_allocator_suffix;
template <class T>
struct constructible_with_allocator_prefix;
template <typename T, typename Alloc>
struct uses_allocator;
}} // namespace boost { namespace container {
#include <boost/container/detail/config_end.hpp>
#endif // BOOST_CONTAINER_ALLOCATOR_SCOPED_ALLOCATOR_FWD_HPP