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File uses_allocator.h

// Uses-allocator Construction -*- C++ -*-

// Copyright (C) 2010-2018 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/>.

#ifndef _USES_ALLOCATOR_H
#define _USES_ALLOCATOR_H 1

#if __cplusplus < 201103L
# include <bits/c++0x_warning.h>
#else

#include <type_traits>
#include <bits/move.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

struct __erased_type { };

template<typename _Alloc, typename _Tp>
    using __is_erased_or_convertible
      = __or_<is_same<_Tp, __erased_type>, is_convertible<_Alloc, _Tp>>;

/// [allocator.tag]
  struct allocator_arg_t { explicit allocator_arg_t() = default; };

_GLIBCXX17_INLINE constexpr allocator_arg_t allocator_arg =
    allocator_arg_t();

template<typename _Tp, typename _Alloc, typename = __void_t<>>
    struct __uses_allocator_helper
    : false_type { };

template<typename _Tp, typename _Alloc>
    struct __uses_allocator_helper<_Tp, _Alloc,
				   __void_t<typename _Tp::allocator_type>>
    : __is_erased_or_convertible<_Alloc, typename _Tp::allocator_type>::type
    { };

/// [allocator.uses.trait]
  template<typename _Tp, typename _Alloc>
    struct uses_allocator
    : __uses_allocator_helper<_Tp, _Alloc>::type
    { };

struct __uses_alloc_base { };

struct __uses_alloc0 : __uses_alloc_base
  {
    struct _Sink { void operator=(const void*) { } } _M_a;
  };

template<typename _Alloc>
    struct __uses_alloc1 : __uses_alloc_base { const _Alloc* _M_a; };

template<typename _Alloc>
    struct __uses_alloc2 : __uses_alloc_base { const _Alloc* _M_a; };

template<bool, typename _Tp, typename _Alloc, typename... _Args>
    struct __uses_alloc;

template<typename _Tp, typename _Alloc, typename... _Args>
    struct __uses_alloc<true, _Tp, _Alloc, _Args...>
    : conditional<
        is_constructible<_Tp, allocator_arg_t, const _Alloc&, _Args...>::value,
        __uses_alloc1<_Alloc>,
       	__uses_alloc2<_Alloc>>::type
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 2586. Wrong value category used in scoped_allocator_adaptor::construct
      static_assert(__or_<
	  is_constructible<_Tp, allocator_arg_t, const _Alloc&, _Args...>,
	  is_constructible<_Tp, _Args..., const _Alloc&>>::value,
	  "construction with an allocator must be possible"
	  " if uses_allocator is true");
    };

template<typename _Tp, typename _Alloc, typename... _Args>
    struct __uses_alloc<false, _Tp, _Alloc, _Args...>
    : __uses_alloc0 { };

template<typename _Tp, typename _Alloc, typename... _Args>
    using __uses_alloc_t =
      __uses_alloc<uses_allocator<_Tp, _Alloc>::value, _Tp, _Alloc, _Args...>;

template<typename _Tp, typename _Alloc, typename... _Args>
    inline __uses_alloc_t<_Tp, _Alloc, _Args...>
    __use_alloc(const _Alloc& __a)
    {
      __uses_alloc_t<_Tp, _Alloc, _Args...> __ret;
      __ret._M_a = std::__addressof(__a);
      return __ret;
    }

template<typename _Tp, typename _Alloc, typename... _Args>
    void
    __use_alloc(const _Alloc&&) = delete;

#if __cplusplus > 201402L
  template <typename _Tp, typename _Alloc>
    inline constexpr bool uses_allocator_v =
      uses_allocator<_Tp, _Alloc>::value;
#endif // C++17

template<template<typename...> class _Predicate,
	   typename _Tp, typename _Alloc, typename... _Args>
    struct __is_uses_allocator_predicate
    : conditional<uses_allocator<_Tp, _Alloc>::value,
      __or_<_Predicate<_Tp, allocator_arg_t, _Alloc, _Args...>,
	    _Predicate<_Tp, _Args..., _Alloc>>,
      _Predicate<_Tp, _Args...>>::type { };

template<typename _Tp, typename _Alloc, typename... _Args>
    struct __is_uses_allocator_constructible
    : __is_uses_allocator_predicate<is_constructible, _Tp, _Alloc, _Args...>
    { };

#if __cplusplus >= 201402L
  template<typename _Tp, typename _Alloc, typename... _Args>
    _GLIBCXX17_INLINE constexpr bool __is_uses_allocator_constructible_v =
      __is_uses_allocator_constructible<_Tp, _Alloc, _Args...>::value;
#endif // C++14

template<typename _Tp, typename _Alloc, typename... _Args>
    struct __is_nothrow_uses_allocator_constructible
    : __is_uses_allocator_predicate<is_nothrow_constructible,
				    _Tp, _Alloc, _Args...>
    { };

#if __cplusplus >= 201402L
  template<typename _Tp, typename _Alloc, typename... _Args>
    _GLIBCXX17_INLINE constexpr bool
    __is_nothrow_uses_allocator_constructible_v =
      __is_nothrow_uses_allocator_constructible<_Tp, _Alloc, _Args...>::value;
#endif // C++14

template<typename _Tp, typename... _Args>
    void __uses_allocator_construct_impl(__uses_alloc0 __a, _Tp* __ptr,
					 _Args&&... __args)
    { ::new ((void*)__ptr) _Tp(std::forward<_Args>(__args)...); }

template<typename _Tp, typename _Alloc, typename... _Args>
    void __uses_allocator_construct_impl(__uses_alloc1<_Alloc> __a, _Tp* __ptr,
					 _Args&&... __args)
    {
      ::new ((void*)__ptr) _Tp(allocator_arg, *__a._M_a,
			       std::forward<_Args>(__args)...);
    }

template<typename _Tp, typename _Alloc, typename... _Args>
    void __uses_allocator_construct_impl(__uses_alloc2<_Alloc> __a, _Tp* __ptr,
					 _Args&&... __args)
    { ::new ((void*)__ptr) _Tp(std::forward<_Args>(__args)..., *__a._M_a); }

template<typename _Tp, typename _Alloc, typename... _Args>
    void __uses_allocator_construct(const _Alloc& __a, _Tp* __ptr,
				    _Args&&... __args)
    {
      __uses_allocator_construct_impl(__use_alloc<_Tp, _Alloc, _Args...>(__a),
				      __ptr, std::forward<_Args>(__args)...);
    }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif
#endif

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..	DIR	-	drwxr-xr-x	2025-08-28 10:58:25
algorithmfwd.h	text/x-c++	21.23 KB	-rw-r--r--	2025-08-26 09:45:00
alloc_traits.h	text/x-c++	19.6 KB	-rw-r--r--	2025-08-26 09:45:00
allocated_ptr.h	text/x-c++	3.22 KB	-rw-r--r--	2025-08-26 09:45:00
allocator.h	text/x-c++	7.39 KB	-rw-r--r--	2025-08-26 09:45:00
atomic_base.h	text/x-c++	23.28 KB	-rw-r--r--	2025-08-26 09:45:00
atomic_futex.h	text/x-c++	9.35 KB	-rw-r--r--	2025-08-26 09:45:00
atomic_lockfree_defines.h	text/x-c	2.2 KB	-rw-r--r--	2025-08-26 09:45:07
basic_ios.h	text/x-c++	15.7 KB	-rw-r--r--	2025-08-26 09:45:00
basic_ios.tcc	text/x-c++	5.94 KB	-rw-r--r--	2025-08-26 09:45:00
basic_string.h	text/x-c++	237.01 KB	-rw-r--r--	2025-08-26 09:45:00
basic_string.tcc	text/x-c++	52.5 KB	-rw-r--r--	2025-08-26 09:45:00
boost_concept_check.h	text/x-c++	26.52 KB	-rw-r--r--	2025-08-26 09:45:00
c++0x_warning.h	text/x-c	1.44 KB	-rw-r--r--	2025-08-26 09:45:00
char_traits.h	text/x-c++	20.42 KB	-rw-r--r--	2025-08-26 09:45:00
codecvt.h	text/x-c++	20.79 KB	-rw-r--r--	2025-08-26 09:45:00
concept_check.h	text/x-c	3.34 KB	-rw-r--r--	2025-08-26 09:45:00
cpp_type_traits.h	text/x-c++	9.56 KB	-rw-r--r--	2025-08-26 09:45:00
cxxabi_forced.h	text/x-c++	1.77 KB	-rw-r--r--	2025-08-26 09:45:07
cxxabi_init_exception.h	text/x-c++	2.17 KB	-rw-r--r--	2025-08-26 09:45:07
deque.tcc	text/x-c++	33.32 KB	-rw-r--r--	2025-08-26 09:45:00
enable_special_members.h	text/x-c++	12.1 KB	-rw-r--r--	2025-08-26 09:45:00
exception.h	text/x-c++	2.23 KB	-rw-r--r--	2025-08-26 09:45:07
exception_defines.h	text/x-c	1.61 KB	-rw-r--r--	2025-08-26 09:45:07
exception_ptr.h	text/x-c++	5.84 KB	-rw-r--r--	2025-08-26 09:45:07
forward_list.h	text/x-c++	47.77 KB	-rw-r--r--	2025-08-26 09:45:00
forward_list.tcc	text/x-c++	12.86 KB	-rw-r--r--	2025-08-26 09:45:00
fs_dir.h	text/x-c++	14.38 KB	-rw-r--r--	2025-08-26 09:45:00
fs_fwd.h	text/x-c++	10.04 KB	-rw-r--r--	2025-08-26 09:45:00
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fstream.tcc	text/x-c++	32.03 KB	-rw-r--r--	2025-08-26 09:45:00
functexcept.h	text/x-c	3.18 KB	-rw-r--r--	2025-08-26 09:45:00
functional_hash.h	text/x-c++	8.04 KB	-rw-r--r--	2025-08-26 09:45:00
gslice.h	text/x-c++	5.39 KB	-rw-r--r--	2025-08-26 09:45:00
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hashtable.h	text/x-c++	72.06 KB	-rw-r--r--	2025-08-26 09:45:00
hashtable_policy.h	text/x-c++	66.38 KB	-rw-r--r--	2025-08-26 09:45:00
indirect_array.h	text/x-c++	7.68 KB	-rw-r--r--	2025-08-26 09:45:00
invoke.h	text/x-c++	3.57 KB	-rw-r--r--	2025-08-26 09:45:00
ios_base.h	text/x-c++	30.3 KB	-rw-r--r--	2025-08-26 09:45:00
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locale_classes.h	text/x-c++	24.31 KB	-rw-r--r--	2025-08-26 09:45:00
locale_classes.tcc	text/x-c++	8.18 KB	-rw-r--r--	2025-08-26 09:45:00
locale_conv.h	text/x-c++	15.72 KB	-rw-r--r--	2025-08-26 09:45:00
locale_facets.h	text/x-c++	90.16 KB	-rw-r--r--	2025-08-26 09:45:00
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locale_facets_nonio.h	text/x-c++	67.36 KB	-rw-r--r--	2025-08-26 09:45:00
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localefwd.h	text/x-c++	5.51 KB	-rw-r--r--	2025-08-26 09:45:00
mask_array.h	text/x-c++	7.42 KB	-rw-r--r--	2025-08-26 09:45:00
memoryfwd.h	text/x-c++	2.4 KB	-rw-r--r--	2025-08-26 09:45:00
move.h	text/x-c++	6.38 KB	-rw-r--r--	2025-08-26 09:45:00
nested_exception.h	text/x-c++	4.69 KB	-rw-r--r--	2025-08-26 09:45:07
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ostream_insert.h	text/x-c++	3.91 KB	-rw-r--r--	2025-08-26 09:45:00
parse_numbers.h	text/x-c++	7.76 KB	-rw-r--r--	2025-08-26 09:45:00
postypes.h	text/x-c++	8.02 KB	-rw-r--r--	2025-08-26 09:45:00
predefined_ops.h	text/x-c++	8.87 KB	-rw-r--r--	2025-08-26 09:45:00
ptr_traits.h	text/x-c++	6.47 KB	-rw-r--r--	2025-08-26 09:45:00
quoted_string.h	text/x-c++	4.93 KB	-rw-r--r--	2025-08-26 09:45:00
random.h	text/x-c++	171.14 KB	-rw-r--r--	2025-08-26 09:45:00
random.tcc	text/x-c++	103.12 KB	-rw-r--r--	2025-08-26 09:45:00
range_access.h	text/x-c++	9.79 KB	-rw-r--r--	2025-08-26 09:45:00
refwrap.h	text/x-c++	11.61 KB	-rw-r--r--	2025-08-26 09:45:00
regex.h	text/x-c++	95.12 KB	-rw-r--r--	2025-08-26 09:45:00
regex.tcc	text/x-c++	16.18 KB	-rw-r--r--	2025-08-26 09:45:00
regex_automaton.h	text/x-c++	10.47 KB	-rw-r--r--	2025-08-26 09:45:00
regex_automaton.tcc	text/x-c++	7.65 KB	-rw-r--r--	2025-08-26 09:45:00
regex_compiler.h	text/x-c++	17.63 KB	-rw-r--r--	2025-08-26 09:45:00
regex_compiler.tcc	text/x-c++	18.84 KB	-rw-r--r--	2025-08-26 09:45:00
regex_constants.h	text/x-c++	14.36 KB	-rw-r--r--	2025-08-26 09:45:00
regex_error.h	text/x-c++	4.79 KB	-rw-r--r--	2025-08-26 09:45:00
regex_executor.h	text/x-c++	7.31 KB	-rw-r--r--	2025-08-26 09:45:00
regex_executor.tcc	text/x-c++	18.4 KB	-rw-r--r--	2025-08-26 09:45:00
regex_scanner.h	text/x-c++	6.92 KB	-rw-r--r--	2025-08-26 09:45:00
regex_scanner.tcc	text/x-c++	14.66 KB	-rw-r--r--	2025-08-26 09:45:00
shared_ptr.h	text/x-c++	22.88 KB	-rw-r--r--	2025-08-26 09:45:00
shared_ptr_atomic.h	text/x-c++	9.54 KB	-rw-r--r--	2025-08-26 09:45:00
shared_ptr_base.h	text/x-c++	53.01 KB	-rw-r--r--	2025-08-26 09:45:00
slice_array.h	text/x-c++	9.13 KB	-rw-r--r--	2025-08-26 09:45:00
specfun.h	text/html	45.95 KB	-rw-r--r--	2025-08-26 09:45:00
sstream.tcc	text/x-c++	9.9 KB	-rw-r--r--	2025-08-26 09:45:00
std_abs.h	text/x-c	3.19 KB	-rw-r--r--	2025-08-26 09:45:00
std_function.h	text/x-c++	22.71 KB	-rw-r--r--	2025-08-26 09:45:00
std_mutex.h	text/x-c++	9.08 KB	-rw-r--r--	2025-08-26 09:45:00
stl_algo.h	text/x-c++	209.27 KB	-rw-r--r--	2025-08-26 09:45:00
stl_algobase.h	text/x-c++	49.31 KB	-rw-r--r--	2025-08-26 09:45:00
stl_bvector.h	text/x-c	32.94 KB	-rw-r--r--	2025-08-26 09:45:00
stl_construct.h	text/x-c++	7.22 KB	-rw-r--r--	2025-08-26 09:45:00
stl_deque.h	text/x-c++	76.73 KB	-rw-r--r--	2025-08-26 09:45:00
stl_function.h	text/x-c++	40.77 KB	-rw-r--r--	2025-08-26 09:45:00
stl_heap.h	text/x-c++	19.73 KB	-rw-r--r--	2025-08-26 09:45:00
stl_iterator.h	text/x-c++	41.3 KB	-rw-r--r--	2025-08-26 09:45:00
stl_iterator_base_funcs.h	text/x-c++	7.99 KB	-rw-r--r--	2025-08-26 09:45:00
stl_iterator_base_types.h	text/x-c++	8.48 KB	-rw-r--r--	2025-08-26 09:45:00
stl_list.h	text/x-c++	65.97 KB	-rw-r--r--	2025-08-26 09:45:00
stl_map.h	text/x-c++	51.55 KB	-rw-r--r--	2025-08-26 09:45:00
stl_multimap.h	text/x-c++	40.58 KB	-rw-r--r--	2025-08-26 09:45:00
stl_multiset.h	text/x-c++	34.97 KB	-rw-r--r--	2025-08-26 09:45:00
stl_numeric.h	text/x-c++	13.51 KB	-rw-r--r--	2025-08-26 09:45:00
stl_pair.h	text/x-c++	18.21 KB	-rw-r--r--	2025-08-26 09:45:00
stl_queue.h	text/x-c++	23.51 KB	-rw-r--r--	2025-08-26 09:45:00
stl_raw_storage_iter.h	text/x-c++	3.74 KB	-rw-r--r--	2025-08-26 09:45:00
stl_relops.h	text/x-c++	4.49 KB	-rw-r--r--	2025-08-26 09:45:00
stl_set.h	text/x-c++	35.28 KB	-rw-r--r--	2025-08-26 09:45:00
stl_stack.h	text/x-c++	11.66 KB	-rw-r--r--	2025-08-26 09:45:00
stl_tempbuf.h	text/x-c++	8.15 KB	-rw-r--r--	2025-08-26 09:45:00
stl_tree.h	text/x-c++	73.15 KB	-rw-r--r--	2025-08-26 09:45:00
stl_uninitialized.h	text/x-c++	27.06 KB	-rw-r--r--	2025-08-26 09:45:00
stl_vector.h	text/x-c++	59.12 KB	-rw-r--r--	2025-08-26 09:45:00
stream_iterator.h	text/x-c++	6.5 KB	-rw-r--r--	2025-08-26 09:45:00
streambuf.tcc	text/x-c++	4.81 KB	-rw-r--r--	2025-08-26 09:45:00
streambuf_iterator.h	text/x-c++	13.44 KB	-rw-r--r--	2025-08-26 09:45:00
string_view.tcc	text/x-c++	6.54 KB	-rw-r--r--	2025-08-26 09:45:00
stringfwd.h	text/x-c++	2.55 KB	-rw-r--r--	2025-08-26 09:45:00
uniform_int_dist.h	text/x-c++	9.84 KB	-rw-r--r--	2025-08-26 09:45:00
unique_ptr.h	text/x-c++	25.38 KB	-rw-r--r--	2025-08-26 09:45:00
unordered_map.h	text/x-c++	73.58 KB	-rw-r--r--	2025-08-26 09:45:00
unordered_set.h	text/x-c++	57.76 KB	-rw-r--r--	2025-08-26 09:45:00
uses_allocator.h	text/x-c++	6.37 KB	-rw-r--r--	2025-08-26 09:45:00
valarray_after.h	text/x-c++	22.12 KB	-rw-r--r--	2025-08-26 09:45:00
valarray_array.h	text/x-c++	21.3 KB	-rw-r--r--	2025-08-26 09:45:00
valarray_array.tcc	text/x-c++	7.08 KB	-rw-r--r--	2025-08-26 09:45:00
valarray_before.h	text/x-c++	18.08 KB	-rw-r--r--	2025-08-26 09:45:00
vector.tcc	text/x-c++	28.95 KB	-rw-r--r--	2025-08-26 09:45:00

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