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Name	Size	Permission
algorithmfwd.h	23.97 KB	-rw-r--r--
align.h	3.62 KB	-rw-r--r--
alloc_traits.h	27.03 KB	-rw-r--r--
allocated_ptr.h	3.25 KB	-rw-r--r--
allocator.h	9.55 KB	-rw-r--r--
atomic_base.h	56.73 KB	-rw-r--r--
atomic_futex.h	12.08 KB	-rw-r--r--
atomic_lockfree_defines.h	2.3 KB	-rw-r--r--
atomic_timed_wait.h	13.18 KB	-rw-r--r--
atomic_wait.h	12.2 KB	-rw-r--r--
basic_ios.h	15.7 KB	-rw-r--r--
basic_ios.tcc	5.96 KB	-rw-r--r--
basic_string.h	149.19 KB	-rw-r--r--
basic_string.tcc	33.76 KB	-rw-r--r--
boost_concept_check.h	29.13 KB	-rw-r--r--
c++0x_warning.h	1.44 KB	-rw-r--r--
char_traits.h	28.54 KB	-rw-r--r--
charconv.h	3.35 KB	-rw-r--r--
chrono.h	41.53 KB	-rw-r--r--
codecvt.h	24.9 KB	-rw-r--r--
concept_check.h	3.34 KB	-rw-r--r--
cow_string.h	129.11 KB	-rw-r--r--
cpp_type_traits.h	13.72 KB	-rw-r--r--
cxxabi_forced.h	1.77 KB	-rw-r--r--
cxxabi_init_exception.h	2.17 KB	-rw-r--r--
deque.tcc	41.38 KB	-rw-r--r--
enable_special_members.h	12.16 KB	-rw-r--r--
erase_if.h	2.09 KB	-rw-r--r--
exception.h	2.45 KB	-rw-r--r--
exception_defines.h	1.61 KB	-rw-r--r--
exception_ptr.h	7.73 KB	-rw-r--r--
forward_list.h	49.87 KB	-rw-r--r--
forward_list.tcc	13.71 KB	-rw-r--r--
fs_dir.h	16.23 KB	-rw-r--r--
fs_fwd.h	10.66 KB	-rw-r--r--
fs_ops.h	10.49 KB	-rw-r--r--
fs_path.h	40.57 KB	-rw-r--r--
fstream.tcc	32.88 KB	-rw-r--r--
functexcept.h	3.43 KB	-rw-r--r--
functional_hash.h	8.51 KB	-rw-r--r--
gslice.h	5.39 KB	-rw-r--r--
gslice_array.h	7.67 KB	-rw-r--r--
hash_bytes.h	2.1 KB	-rw-r--r--
hashtable.h	87.83 KB	-rw-r--r--
hashtable_policy.h	63.21 KB	-rw-r--r--
indirect_array.h	7.68 KB	-rw-r--r--
invoke.h	5.92 KB	-rw-r--r--
ios_base.h	31.43 KB	-rw-r--r--
istream.tcc	31.38 KB	-rw-r--r--
iterator_concepts.h	32.61 KB	-rw-r--r--
list.tcc	17.62 KB	-rw-r--r--
locale_classes.h	24.46 KB	-rw-r--r--
locale_classes.tcc	8.18 KB	-rw-r--r--
locale_conv.h	18.74 KB	-rw-r--r--
locale_facets.h	91.72 KB	-rw-r--r--
locale_facets.tcc	39.51 KB	-rw-r--r--
locale_facets_nonio.h	69.1 KB	-rw-r--r--
locale_facets_nonio.tcc	53.76 KB	-rw-r--r--
localefwd.h	5.8 KB	-rw-r--r--
mask_array.h	7.5 KB	-rw-r--r--
max_size_type.h	21.96 KB	-rw-r--r--
memoryfwd.h	2.45 KB	-rw-r--r--
mofunc_impl.h	7.52 KB	-rw-r--r--
move.h	6.63 KB	-rw-r--r--
move_only_function.h	5.73 KB	-rw-r--r--
nested_exception.h	4.77 KB	-rw-r--r--
new_allocator.h	6.47 KB	-rw-r--r--
node_handle.h	10.67 KB	-rw-r--r--
ostream.tcc	11.69 KB	-rw-r--r--
ostream_insert.h	3.94 KB	-rw-r--r--
parse_numbers.h	7.8 KB	-rw-r--r--
postypes.h	7.33 KB	-rw-r--r--
predefined_ops.h	9.94 KB	-rw-r--r--
ptr_traits.h	8.88 KB	-rw-r--r--
quoted_string.h	4.93 KB	-rw-r--r--
random.h	174.24 KB	-rw-r--r--
random.tcc	103.38 KB	-rw-r--r--
range_access.h	10.97 KB	-rw-r--r--
ranges_algo.h	114.1 KB	-rw-r--r--
ranges_algobase.h	18.4 KB	-rw-r--r--
ranges_base.h	25.61 KB	-rw-r--r--
ranges_cmp.h	5.83 KB	-rw-r--r--
ranges_uninitialized.h	17.71 KB	-rw-r--r--
ranges_util.h	21.3 KB	-rw-r--r--
refwrap.h	13.21 KB	-rw-r--r--
regex.h	101.77 KB	-rw-r--r--
regex.tcc	16.13 KB	-rw-r--r--
regex_automaton.h	10.54 KB	-rw-r--r--
regex_automaton.tcc	7.58 KB	-rw-r--r--
regex_compiler.h	15.92 KB	-rw-r--r--
regex_compiler.tcc	18.38 KB	-rw-r--r--
regex_constants.h	14.51 KB	-rw-r--r--
regex_error.h	5.03 KB	-rw-r--r--
regex_executor.h	8.8 KB	-rw-r--r--
regex_executor.tcc	18.41 KB	-rw-r--r--
regex_scanner.h	6.88 KB	-rw-r--r--
regex_scanner.tcc	14.54 KB	-rw-r--r--
semaphore_base.h	7.7 KB	-rw-r--r--
shared_ptr.h	38.14 KB	-rw-r--r--
shared_ptr_atomic.h	20.7 KB	-rw-r--r--
shared_ptr_base.h	65.23 KB	-rw-r--r--
slice_array.h	9.35 KB	-rw-r--r--
specfun.h	46.13 KB	-rw-r--r--
sstream.tcc	9.91 KB	-rw-r--r--
std_abs.h	3.37 KB	-rw-r--r--
std_function.h	22.34 KB	-rw-r--r--
std_mutex.h	6.27 KB	-rw-r--r--
std_thread.h	8.24 KB	-rw-r--r--
stl_algo.h	210.67 KB	-rw-r--r--
stl_algobase.h	75.01 KB	-rw-r--r--
stl_bvector.h	40.27 KB	-rw-r--r--
stl_construct.h	8.46 KB	-rw-r--r--
stl_deque.h	76.34 KB	-rw-r--r--
stl_function.h	43.97 KB	-rw-r--r--
stl_heap.h	20.31 KB	-rw-r--r--
stl_iterator.h	79.65 KB	-rw-r--r--
stl_iterator_base_funcs.h	8.57 KB	-rw-r--r--
stl_iterator_base_types.h	9.46 KB	-rw-r--r--
stl_list.h	70.68 KB	-rw-r--r--
stl_map.h	54.8 KB	-rw-r--r--
stl_multimap.h	42.67 KB	-rw-r--r--
stl_multiset.h	36.84 KB	-rw-r--r--
stl_numeric.h	14.26 KB	-rw-r--r--
stl_pair.h	29.41 KB	-rw-r--r--
stl_queue.h	28.06 KB	-rw-r--r--
stl_raw_storage_iter.h	3.91 KB	-rw-r--r--
stl_relops.h	4.47 KB	-rw-r--r--
stl_set.h	37.09 KB	-rw-r--r--
stl_stack.h	13.71 KB	-rw-r--r--
stl_tempbuf.h	8.48 KB	-rw-r--r--
stl_tree.h	72.04 KB	-rw-r--r--
stl_uninitialized.h	35.32 KB	-rw-r--r--
stl_vector.h	68.73 KB	-rw-r--r--
stream_iterator.h	8.09 KB	-rw-r--r--
streambuf.tcc	4.58 KB	-rw-r--r--
streambuf_iterator.h	15.53 KB	-rw-r--r--
string_view.tcc	7 KB	-rw-r--r--
stringfwd.h	2.56 KB	-rw-r--r--
this_thread_sleep.h	3.21 KB	-rw-r--r--
uniform_int_dist.h	12.77 KB	-rw-r--r--
unique_lock.h	6.01 KB	-rw-r--r--
unique_ptr.h	35.54 KB	-rw-r--r--
unordered_map.h	74.87 KB	-rw-r--r--
unordered_set.h	61.46 KB	-rw-r--r--
uses_allocator.h	6.74 KB	-rw-r--r--
uses_allocator_args.h	6.96 KB	-rw-r--r--
utility.h	8.12 KB	-rw-r--r--
valarray_after.h	22.74 KB	-rw-r--r--
valarray_array.h	20.8 KB	-rw-r--r--
valarray_array.tcc	7.08 KB	-rw-r--r--
valarray_before.h	18.69 KB	-rw-r--r--
vector.tcc	30.82 KB	-rw-r--r--

Code Editor : ptr_traits.h

// Pointer Traits -*- C++ -*-

// Copyright (C) 2011-2022 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 bits/ptr_traits.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{memory}
 */

#ifndef _PTR_TRAITS_H
#define _PTR_TRAITS_H 1

#if __cplusplus >= 201103L

#include <bits/move.h>

#if __cplusplus > 201703L
#include <concepts>
# ifndef __cpp_lib_constexpr_memory
// Defined to a newer value in bits/unique_ptr.h for C++23
#  define __cpp_lib_constexpr_memory 201811L
# endif
namespace __gnu_debug { struct _Safe_iterator_base; }
#endif

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

class __undefined;

// For a specialization `SomeTemplate<T, Types...>` the member `type` is T,
  // otherwise `type` is `__undefined`.
  template<typename _Tp>
    struct __get_first_arg
    { using type = __undefined; };

template<template<typename, typename...> class _SomeTemplate, typename _Tp,
           typename... _Types>
    struct __get_first_arg<_SomeTemplate<_Tp, _Types...>>
    { using type = _Tp; };

// For a specialization `SomeTemplate<T, Args...>` and a type `U` the member
  // `type` is `SomeTemplate<U, Args...>`, otherwise there is no member `type`.
  template<typename _Tp, typename _Up>
    struct __replace_first_arg
    { };

template<template<typename, typename...> class _SomeTemplate, typename _Up,
           typename _Tp, typename... _Types>
    struct __replace_first_arg<_SomeTemplate<_Tp, _Types...>, _Up>
    { using type = _SomeTemplate<_Up, _Types...>; };

#if __cpp_concepts
  // When concepts are supported detection of _Ptr::element_type is done
  // by a requires-clause, so __ptr_traits_elem_t only needs to do this:
  template<typename _Ptr>
    using __ptr_traits_elem_t = typename __get_first_arg<_Ptr>::type;
#else
  // Detect the element type of a pointer-like type.
  template<typename _Ptr, typename = void>
    struct __ptr_traits_elem : __get_first_arg<_Ptr>
    { };

// Use _Ptr::element_type if is a valid type.
  template<typename _Ptr>
    struct __ptr_traits_elem<_Ptr, __void_t<typename _Ptr::element_type>>
    { using type = typename _Ptr::element_type; };

template<typename _Ptr>
    using __ptr_traits_elem_t = typename __ptr_traits_elem<_Ptr>::type;
#endif

// Define pointer_traits<P>::pointer_to.
  template<typename _Ptr, typename _Elt, bool = is_void<_Elt>::value>
    struct __ptr_traits_ptr_to
    {
      using pointer = _Ptr;
      using element_type = _Elt;

/**
       *  @brief  Obtain a pointer to an object
       *  @param  __r  A reference to an object of type `element_type`
       *  @return `pointer::pointer_to(__e)`
       *  @pre `pointer::pointer_to(__e)` is a valid expression.
      */
      static pointer
      pointer_to(element_type& __e)
#if __cpp_lib_concepts
      requires requires {
	{ pointer::pointer_to(__e) } -> convertible_to<pointer>;
      }
#endif
      { return pointer::pointer_to(__e); }
    };

// Do not define pointer_traits<P>::pointer_to if element type is void.
  template<typename _Ptr, typename _Elt>
    struct __ptr_traits_ptr_to<_Ptr, _Elt, true>
    { };

// Partial specialization defining pointer_traits<T*>::pointer_to(T&).
  template<typename _Tp>
    struct __ptr_traits_ptr_to<_Tp*, _Tp, false>
    {
      using pointer = _Tp*;
      using element_type = _Tp;

/**
       *  @brief  Obtain a pointer to an object
       *  @param  __r  A reference to an object of type `element_type`
       *  @return `addressof(__r)`
      */
      static _GLIBCXX20_CONSTEXPR pointer
      pointer_to(element_type& __r) noexcept
      { return std::addressof(__r); }
    };

template<typename _Ptr, typename _Elt>
    struct __ptr_traits_impl : __ptr_traits_ptr_to<_Ptr, _Elt>
    {
    private:
      template<typename _Tp, typename = void>
	struct __difference { using type = ptrdiff_t; };

template<typename _Tp>
#if __cpp_concepts
	requires requires { typename _Tp::difference_type; }
	struct __difference<_Tp>
#else
	struct __difference<_Tp, __void_t<typename _Tp::difference_type>>
#endif
	{ using type = typename _Tp::difference_type; };

template<typename _Tp, typename _Up, typename = void>
	struct __rebind : __replace_first_arg<_Tp, _Up> { };

template<typename _Tp, typename _Up>
#if __cpp_concepts
	requires requires { typename _Tp::template rebind<_Up>; }
	struct __rebind<_Tp, _Up>
#else
	struct __rebind<_Tp, _Up, __void_t<typename _Tp::template rebind<_Up>>>
#endif
	{ using type = typename _Tp::template rebind<_Up>; };

public:
      /// The pointer type.
      using pointer = _Ptr;

/// The type pointed to.
      using element_type = _Elt;

/// The type used to represent the difference between two pointers.
      using difference_type = typename __difference<_Ptr>::type;

/// A pointer to a different type.
      template<typename _Up>
        using rebind = typename __rebind<_Ptr, _Up>::type;
    };

// _GLIBCXX_RESOLVE_LIB_DEFECTS
  // 3545. std::pointer_traits should be SFINAE-friendly
  template<typename _Ptr>
    struct __ptr_traits_impl<_Ptr, __undefined>
    { };

/**
   * @brief  Uniform interface to all pointer-like types
   * @ingroup pointer_abstractions
   * @since C++11
  */
  template<typename _Ptr>
    struct pointer_traits : __ptr_traits_impl<_Ptr, __ptr_traits_elem_t<_Ptr>>
    { };

#if __cpp_concepts
  template<typename _Ptr> requires requires { typename _Ptr::element_type; }
    struct pointer_traits<_Ptr>
    : __ptr_traits_impl<_Ptr, typename _Ptr::element_type>
    { };
#endif

/**
   * @brief  Partial specialization for built-in pointers.
   * @ingroup pointer_abstractions
   * @since C++11
  */
  template<typename _Tp>
    struct pointer_traits<_Tp*> : __ptr_traits_ptr_to<_Tp*, _Tp>
    {
      /// The pointer type
      typedef _Tp* pointer;
      /// The type pointed to
      typedef _Tp  element_type;
      /// Type used to represent the difference between two pointers
      typedef ptrdiff_t difference_type;
      /// A pointer to a different type.
      template<typename _Up> using rebind = _Up*;
    };

/// Convenience alias for rebinding pointers.
  template<typename _Ptr, typename _Tp>
    using __ptr_rebind = typename pointer_traits<_Ptr>::template rebind<_Tp>;

template<typename _Tp>
    constexpr _Tp*
    __to_address(_Tp* __ptr) noexcept
    {
      static_assert(!std::is_function<_Tp>::value, "not a function pointer");
      return __ptr;
    }

#if __cplusplus <= 201703L
  template<typename _Ptr>
    constexpr typename std::pointer_traits<_Ptr>::element_type*
    __to_address(const _Ptr& __ptr)
    { return std::__to_address(__ptr.operator->()); }
#else
  template<typename _Ptr>
    constexpr auto
    __to_address(const _Ptr& __ptr) noexcept
    -> decltype(std::pointer_traits<_Ptr>::to_address(__ptr))
    { return std::pointer_traits<_Ptr>::to_address(__ptr); }

template<typename _Ptr, typename... _None>
    constexpr auto
    __to_address(const _Ptr& __ptr, _None...) noexcept
    {
      if constexpr (is_base_of_v<__gnu_debug::_Safe_iterator_base, _Ptr>)
	return std::__to_address(__ptr.base().operator->());
      else
	return std::__to_address(__ptr.operator->());
    }

#define __cpp_lib_to_address 201711L

/**
   * @brief Obtain address referenced by a pointer to an object
   * @param __ptr A pointer to an object
   * @return @c __ptr
   * @ingroup pointer_abstractions
  */
  template<typename _Tp>
    constexpr _Tp*
    to_address(_Tp* __ptr) noexcept
    { return std::__to_address(__ptr); }

/**
   * @brief Obtain address referenced by a pointer to an object
   * @param __ptr A pointer to an object
   * @return @c pointer_traits<_Ptr>::to_address(__ptr) if that expression is
             well-formed, otherwise @c to_address(__ptr.operator->())
   * @ingroup pointer_abstractions
  */
  template<typename _Ptr>
    constexpr auto
    to_address(const _Ptr& __ptr) noexcept
    { return std::__to_address(__ptr); }
#endif // C++2a

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif

${this.title}

Code Editor : ptr_traits.h