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Diffstat (limited to '8/sources/cxx-stl/gnu-libstdc++/4.7/include/scoped_allocator')
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1 files changed, 387 insertions, 0 deletions
diff --git a/8/sources/cxx-stl/gnu-libstdc++/4.7/include/scoped_allocator b/8/sources/cxx-stl/gnu-libstdc++/4.7/include/scoped_allocator new file mode 100644 index 0000000..fc2db7c --- /dev/null +++ b/8/sources/cxx-stl/gnu-libstdc++/4.7/include/scoped_allocator @@ -0,0 +1,387 @@ +// <scoped_allocator> -*- C++ -*- + +// Copyright (C) 2011, 2012 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/** @file include/scoped_allocator + * This is a Standard C++ Library header. + */ + +#ifndef _SCOPED_ALLOCATOR +#define _SCOPED_ALLOCATOR 1 + +#pragma GCC system_header + +#ifndef __GXX_EXPERIMENTAL_CXX0X__ +# include <bits/c++0x_warning.h> +#else + +#include <utility> +#include <tuple> +#include <bits/alloc_traits.h> + +namespace std _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + + template<template<typename> class _Pred, typename... _Allocs> + struct __any_of; + + template<template<typename> class _Pred, typename _Alloc, typename... _Allocs> + struct __any_of<_Pred, _Alloc, _Allocs...> + : __or_<_Pred<_Alloc>, __any_of<_Pred, _Allocs...>> + { }; + + template<template<typename> class _Pred, typename _Alloc> + struct __any_of<_Pred, _Alloc> + : _Pred<_Alloc> + { }; + + /** + * @addtogroup allocators + * @{ + */ + + template<typename _Alloc> + struct __propagate_on_copy + : allocator_traits<_Alloc>::propagate_on_container_copy_assignment + { }; + template<typename _Alloc> + struct __propagate_on_move + : allocator_traits<_Alloc>::propagate_on_container_move_assignment + { }; + template<typename _Alloc> + struct __propagate_on_swap + : allocator_traits<_Alloc>::propagate_on_container_swap + { }; + + + template<typename _Alloc> + inline auto + __do_outermost(_Alloc& __a, _Alloc*) -> decltype(__a.outer_allocator()) + { return __a.outer_allocator(); } + + template<typename _Alloc> + inline _Alloc& + __do_outermost(_Alloc& __a, ...) + { return __a; } + + template<typename _Alloc> + inline auto + __outermost(_Alloc& __a) -> decltype(__do_outermost(__a, &__a)) + { return __do_outermost(__a, &__a); } + + template<typename _OuterAlloc, typename... _InnerAllocs> + class scoped_allocator_adaptor; + + template<typename...> + struct __inner_type_impl; + + template<typename _Outer> + struct __inner_type_impl<_Outer> + { + typedef scoped_allocator_adaptor<_Outer> __type; + + __inner_type_impl() = default; + __inner_type_impl(const __inner_type_impl&) = default; + __inner_type_impl(__inner_type_impl&&) = default; + + template<typename _Alloc> + __inner_type_impl(const __inner_type_impl<_Alloc>& __other) + { } + + template<typename _Alloc> + __inner_type_impl(__inner_type_impl<_Alloc>&& __other) + { } + + __type& + _M_get(__type* __p) noexcept { return *__p; } + + const __type& + _M_get(const __type* __p) const noexcept { return *__p; } + + tuple<> + _M_tie() const noexcept { return tuple<>(); } + + bool + operator==(const __inner_type_impl&) const noexcept + { return true; } + }; + + template<typename _Outer, typename _InnerHead, typename... _InnerTail> + struct __inner_type_impl<_Outer, _InnerHead, _InnerTail...> + { + typedef scoped_allocator_adaptor<_InnerHead, _InnerTail...> __type; + + __inner_type_impl() = default; + __inner_type_impl(const __inner_type_impl&) = default; + __inner_type_impl(__inner_type_impl&&) = default; + + template<typename... _Allocs> + __inner_type_impl(const __inner_type_impl<_Allocs...>& __other) + : _M_inner(__other._M_inner) { } + + template<typename... _Allocs> + __inner_type_impl(__inner_type_impl<_Allocs...>&& __other) + : _M_inner(std::move(__other._M_inner)) { } + + template<typename... _Args> + explicit + __inner_type_impl(_Args&&... __args) + : _M_inner(std::forward<_Args>(__args)...) { } + + __type& + _M_get(void*) noexcept { return _M_inner; } + + const __type& + _M_get(const void*) const noexcept { return _M_inner; } + + tuple<const _InnerHead&, const _InnerTail&...> + _M_tie() const noexcept + { return _M_inner._M_tie(); } + + bool + operator==(const __inner_type_impl& __other) const noexcept + { return _M_inner == __other._M_inner; } + + private: + template<typename...> friend class __inner_type_impl; + template<typename, typename...> friend class scoped_allocator_adaptor; + + __type _M_inner; + }; + + /// Primary class template. + template<typename _OuterAlloc, typename... _InnerAllocs> + class scoped_allocator_adaptor + : public _OuterAlloc + { + typedef allocator_traits<_OuterAlloc> __traits; + + typedef __inner_type_impl<_OuterAlloc, _InnerAllocs...> __inner_type; + __inner_type _M_inner; + + template<typename _Outer, typename... _Inner> + friend class scoped_allocator_adaptor; + + template<typename...> + friend class __inner_type_impl; + + tuple<const _OuterAlloc&, const _InnerAllocs&...> + _M_tie() const noexcept + { return std::tuple_cat(std::tie(outer_allocator()), _M_inner._M_tie()); } + + + template<typename _Tp, typename... _Args> + void + _M_construct(__uses_alloc0, _Tp* __p, _Args&&... __args) + { + auto& __outer = __outermost(*this); + typedef typename std::decay<decltype(__outer)>::type __outer_type; + typedef allocator_traits<__outer_type> __o_traits; + __o_traits::construct(__outer, __p, std::forward<_Args>(__args)...); + } + + typedef __uses_alloc1<typename __inner_type::__type> __uses_alloc1_; + typedef __uses_alloc2<typename __inner_type::__type> __uses_alloc2_; + + template<typename _Tp, typename... _Args> + void + _M_construct(__uses_alloc1_, _Tp* __p, _Args&&... __args) + { + auto& __outer = __outermost(*this); + typedef typename std::decay<decltype(__outer)>::type __outer_type; + typedef allocator_traits<__outer_type> __o_traits; + __o_traits::construct(__outer, __p, allocator_arg, inner_allocator(), + std::forward<_Args>(__args)...); + } + + template<typename _Tp, typename... _Args> + void + _M_construct(__uses_alloc2_, _Tp* __p, _Args&&... __args) + { + auto& __outer = __outermost(*this); + typedef typename std::decay<decltype(__outer)>::type __outer_type; + typedef allocator_traits<__outer_type> __o_traits; + __o_traits::construct(__outer, __p, std::forward<_Args>(__args)..., + inner_allocator()); + } + + template<typename _Alloc> + static _Alloc + _S_select_on_copy(const _Alloc& __a) + { + typedef allocator_traits<_Alloc> __a_traits; + return __a_traits::select_on_container_copy_construction(__a); + } + + template<std::size_t... _Indices> + scoped_allocator_adaptor(tuple<const _OuterAlloc&, + const _InnerAllocs&...> __refs, + _Index_tuple<_Indices...>) + : _OuterAlloc(_S_select_on_copy(std::get<0>(__refs))), + _M_inner(_S_select_on_copy(std::get<_Indices+1>(__refs))...) + { } + + public: + typedef _OuterAlloc outer_allocator_type; + typedef typename __inner_type::__type inner_allocator_type; + + typedef typename __traits::value_type value_type; + typedef typename __traits::size_type size_type; + typedef typename __traits::difference_type difference_type; + typedef typename __traits::pointer pointer; + typedef typename __traits::const_pointer const_pointer; + typedef typename __traits::void_pointer void_pointer; + typedef typename __traits::const_void_pointer const_void_pointer; + + typedef typename conditional< + __any_of<__propagate_on_copy, _OuterAlloc, _InnerAllocs...>::value, + true_type, false_type>::type propagate_on_container_copy_assignment; + typedef typename conditional< + __any_of<__propagate_on_move, _OuterAlloc, _InnerAllocs...>::value, + true_type, false_type>::type propagate_on_container_move_assignment; + typedef typename conditional< + __any_of<__propagate_on_swap, _OuterAlloc, _InnerAllocs...>::value, + true_type, false_type>::type propagate_on_container_swap; + + template <class _Tp> + struct rebind + { + typedef scoped_allocator_adaptor< + typename __traits::template rebind_alloc<_Tp>, + _InnerAllocs...> other; + }; + + scoped_allocator_adaptor() : _OuterAlloc(), _M_inner() { } + + template<typename _Outer2> + scoped_allocator_adaptor(_Outer2&& __outer, + const _InnerAllocs&... __inner) + : _OuterAlloc(std::forward<_Outer2>(__outer)), + _M_inner(__inner...) + { } + + scoped_allocator_adaptor(const scoped_allocator_adaptor& __other) + : _OuterAlloc(__other.outer_allocator()), + _M_inner(__other._M_inner) + { } + + scoped_allocator_adaptor(scoped_allocator_adaptor&& __other) + : _OuterAlloc(std::move(__other.outer_allocator())), + _M_inner(std::move(__other._M_inner)) + { } + + template<typename _Outer2> + scoped_allocator_adaptor( + const scoped_allocator_adaptor<_Outer2, _InnerAllocs...>& __other) + : _OuterAlloc(__other.outer_allocator()), + _M_inner(__other._M_inner) + { } + + template<typename _Outer2> + scoped_allocator_adaptor( + scoped_allocator_adaptor<_Outer2, _InnerAllocs...>&& __other) + : _OuterAlloc(std::move(__other.outer_allocator())), + _M_inner(std::move(__other._M_inner)) + { } + + inner_allocator_type& inner_allocator() noexcept + { return _M_inner._M_get(this); } + + const inner_allocator_type& inner_allocator() const noexcept + { return _M_inner._M_get(this); } + + outer_allocator_type& outer_allocator() noexcept + { return static_cast<_OuterAlloc&>(*this); } + + const outer_allocator_type& outer_allocator() const noexcept + { return static_cast<const _OuterAlloc&>(*this); } + + pointer allocate(size_type __n) + { return __traits::allocate(outer_allocator(), __n); } + + pointer allocate(size_type __n, const_void_pointer __hint) + { return __traits::allocate(outer_allocator(), __n, __hint); } + + void deallocate(pointer __p, size_type __n) + { return __traits::deallocate(outer_allocator(), __p, __n); } + + size_type max_size() const + { return __traits::max_size(outer_allocator()); } + + template<typename _Tp, typename... _Args> + void construct(_Tp* __p, _Args&&... __args) + { + auto& __inner = inner_allocator(); + auto __use_tag + = __use_alloc<_Tp, inner_allocator_type, _Args...>(__inner); + _M_construct(__use_tag, __p, std::forward<_Args>(__args)...); + } + + // TODO: construct pairs + + template<typename _Tp> + void destroy(_Tp* __p) + { + auto& __outer = __outermost(*this); + typedef typename std::decay<decltype(__outer)>::type __outer_type; + allocator_traits<__outer_type>::destroy(__outer, __p); + } + + scoped_allocator_adaptor + select_on_container_copy_construction() const + { + typedef typename _Build_index_tuple<sizeof...(_InnerAllocs)>::__type + _Indices; + return scoped_allocator_adaptor(_M_tie(), _Indices()); + } + + template <typename _OutA1, typename _OutA2, typename... _InA> + friend bool + operator==(const scoped_allocator_adaptor<_OutA1, _InA...>& __a, + const scoped_allocator_adaptor<_OutA2, _InA...>& __b) noexcept; + }; + + template <typename _OutA1, typename _OutA2, typename... _InA> + inline bool + operator==(const scoped_allocator_adaptor<_OutA1, _InA...>& __a, + const scoped_allocator_adaptor<_OutA2, _InA...>& __b) noexcept + { + return __a.outer_allocator() == __b.outer_allocator() + && __a._M_inner == __b._M_inner; + } + + template <typename _OutA1, typename _OutA2, typename... _InA> + inline bool + operator!=(const scoped_allocator_adaptor<_OutA1, _InA...>& __a, + const scoped_allocator_adaptor<_OutA2, _InA...>& __b) noexcept + { return !(__a == __b); } + + /// @} + +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace + +#endif // __GXX_EXPERIMENTAL_CXX0X__ + +#endif // _SCOPED_ALLOCATOR |