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algorithmfwd.h	24.05 KB	-rw-r--r--
align.h	3.62 KB	-rw-r--r--
alloc_traits.h	31.4 KB	-rw-r--r--
allocated_ptr.h	3.25 KB	-rw-r--r--
allocator.h	8.61 KB	-rw-r--r--
atomic_base.h	60.9 KB	-rw-r--r--
atomic_futex.h	12.19 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	12.33 KB	-rw-r--r--
basic_ios.h	15.85 KB	-rw-r--r--
basic_ios.tcc	5.67 KB	-rw-r--r--
basic_string.h	161.58 KB	-rw-r--r--
basic_string.tcc	30.7 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	3.58 KB	-rw-r--r--
chrono.h	47.09 KB	-rw-r--r--
chrono_io.h	126.98 KB	-rw-r--r--
codecvt.h	24.9 KB	-rw-r--r--
concept_check.h	3.32 KB	-rw-r--r--
cow_string.h	134.11 KB	-rw-r--r--
cpp_type_traits.h	14.54 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	41.43 KB	-rw-r--r--
elements_of.h	2.13 KB	-rw-r--r--
enable_special_members.h	12.16 KB	-rw-r--r--
erase_if.h	2.08 KB	-rw-r--r--
exception.h	2.41 KB	-rw-r--r--
exception_defines.h	1.61 KB	-rw-r--r--
exception_ptr.h	8.02 KB	-rw-r--r--
forward_list.h	50 KB	-rw-r--r--
forward_list.tcc	13.71 KB	-rw-r--r--
fs_dir.h	17.94 KB	-rw-r--r--
fs_fwd.h	10.91 KB	-rw-r--r--
fs_ops.h	10.49 KB	-rw-r--r--
fs_path.h	41.47 KB	-rw-r--r--
fstream.tcc	32.64 KB	-rw-r--r--
functexcept.h	4.17 KB	-rw-r--r--
functional_hash.h	8.79 KB	-rw-r--r--
gslice.h	5.52 KB	-rw-r--r--
gslice_array.h	7.71 KB	-rw-r--r--
hash_bytes.h	2.1 KB	-rw-r--r--
hashtable.h	88.15 KB	-rw-r--r--
hashtable_policy.h	64.73 KB	-rw-r--r--
indirect_array.h	7.72 KB	-rw-r--r--
invoke.h	6.08 KB	-rw-r--r--
ios_base.h	32.29 KB	-rw-r--r--
istream.tcc	32.16 KB	-rw-r--r--
iterator_concepts.h	34.38 KB	-rw-r--r--
list.tcc	17.63 KB	-rw-r--r--
locale_classes.h	25.15 KB	-rw-r--r--
locale_classes.tcc	10.76 KB	-rw-r--r--
locale_conv.h	18.74 KB	-rw-r--r--
locale_facets.h	92.12 KB	-rw-r--r--
locale_facets.tcc	40.61 KB	-rw-r--r--
locale_facets_nonio.h	69.1 KB	-rw-r--r--
locale_facets_nonio.tcc	55.86 KB	-rw-r--r--
localefwd.h	5.8 KB	-rw-r--r--
mask_array.h	7.77 KB	-rw-r--r--
max_size_type.h	22 KB	-rw-r--r--
memory_resource.h	15.8 KB	-rw-r--r--
memoryfwd.h	2.5 KB	-rw-r--r--
mofunc_impl.h	7.45 KB	-rw-r--r--
move.h	7.62 KB	-rw-r--r--
move_only_function.h	6.15 KB	-rw-r--r--
nested_exception.h	7.51 KB	-rw-r--r--
new_allocator.h	7.31 KB	-rw-r--r--
node_handle.h	11.1 KB	-rw-r--r--
ostream.tcc	12.02 KB	-rw-r--r--
ostream_insert.h	3.98 KB	-rw-r--r--
out_ptr.h	14.14 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	8.05 KB	-rw-r--r--
quoted_string.h	5.01 KB	-rw-r--r--
random.h	181.57 KB	-rw-r--r--
random.tcc	103.49 KB	-rw-r--r--
range_access.h	11.66 KB	-rw-r--r--
ranges_algo.h	129.22 KB	-rw-r--r--
ranges_algobase.h	18.63 KB	-rw-r--r--
ranges_base.h	28.99 KB	-rw-r--r--
ranges_cmp.h	5.74 KB	-rw-r--r--
ranges_uninitialized.h	17.71 KB	-rw-r--r--
ranges_util.h	25.84 KB	-rw-r--r--
refwrap.h	15.05 KB	-rw-r--r--
regex.h	104.49 KB	-rw-r--r--
regex.tcc	16.1 KB	-rw-r--r--
regex_automaton.h	10.55 KB	-rw-r--r--
regex_automaton.tcc	7.6 KB	-rw-r--r--
regex_compiler.h	15.92 KB	-rw-r--r--
regex_compiler.tcc	18.48 KB	-rw-r--r--
regex_constants.h	14.77 KB	-rw-r--r--
regex_error.h	5.35 KB	-rw-r--r--
regex_executor.h	8.81 KB	-rw-r--r--
regex_executor.tcc	18.49 KB	-rw-r--r--
regex_scanner.h	6.88 KB	-rw-r--r--
regex_scanner.tcc	14.59 KB	-rw-r--r--
requires_hosted.h	1.36 KB	-rw-r--r--
sat_arith.h	4.64 KB	-rw-r--r--
semaphore_base.h	7.7 KB	-rw-r--r--
shared_ptr.h	38.26 KB	-rw-r--r--
shared_ptr_atomic.h	24.12 KB	-rw-r--r--
shared_ptr_base.h	65.58 KB	-rw-r--r--
slice_array.h	9.39 KB	-rw-r--r--
specfun.h	46.09 KB	-rw-r--r--
sstream.tcc	9.91 KB	-rw-r--r--
std_abs.h	4.63 KB	-rw-r--r--
std_function.h	23.35 KB	-rw-r--r--
std_mutex.h	6.73 KB	-rw-r--r--
std_thread.h	10.02 KB	-rw-r--r--
stl_algo.h	210.46 KB	-rw-r--r--
stl_algobase.h	79.62 KB	-rw-r--r--
stl_bvector.h	41.68 KB	-rw-r--r--
stl_construct.h	8.61 KB	-rw-r--r--
stl_deque.h	76.46 KB	-rw-r--r--
stl_function.h	44.2 KB	-rw-r--r--
stl_heap.h	20.38 KB	-rw-r--r--
stl_iterator.h	93.68 KB	-rw-r--r--
stl_iterator_base_funcs.h	8.75 KB	-rw-r--r--
stl_iterator_base_types.h	9.48 KB	-rw-r--r--
stl_list.h	70.78 KB	-rw-r--r--
stl_map.h	54.84 KB	-rw-r--r--
stl_multimap.h	42.71 KB	-rw-r--r--
stl_multiset.h	36.87 KB	-rw-r--r--
stl_numeric.h	14.25 KB	-rw-r--r--
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stl_queue.h	28.04 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	37.13 KB	-rw-r--r--
stl_stack.h	13.7 KB	-rw-r--r--
stl_tempbuf.h	10.17 KB	-rw-r--r--
stl_tree.h	72.02 KB	-rw-r--r--
stl_uninitialized.h	35.65 KB	-rw-r--r--
stl_vector.h	69.15 KB	-rw-r--r--
stream_iterator.h	8.2 KB	-rw-r--r--
streambuf.tcc	4.58 KB	-rw-r--r--
streambuf_iterator.h	15.57 KB	-rw-r--r--
string_view.tcc	7 KB	-rw-r--r--
stringfwd.h	2.56 KB	-rw-r--r--
text_encoding-data.h	24.3 KB	-rw-r--r--
this_thread_sleep.h	3.21 KB	-rw-r--r--
unicode-data.h	25.4 KB	-rw-r--r--
unicode.h	29.66 KB	-rw-r--r--
uniform_int_dist.h	13 KB	-rw-r--r--
unique_lock.h	6.32 KB	-rw-r--r--
unique_ptr.h	35.96 KB	-rw-r--r--
unordered_map.h	75.45 KB	-rw-r--r--
unordered_set.h	61.91 KB	-rw-r--r--
uses_allocator.h	6.91 KB	-rw-r--r--
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utility.h	8.55 KB	-rw-r--r--
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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	37.12 KB	-rw-r--r--
version.h	79.04 KB	-rw-r--r--

Code Editor : mofunc_impl.h

// Implementation of std::move_only_function -*- C++ -*-

// Copyright The GNU Toolchain Authors.
//
// 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/bits/mofunc_impl.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{functional}
 */

#ifndef _GLIBCXX_MOF_CV
# define _GLIBCXX_MOF_CV
#endif

#ifdef _GLIBCXX_MOF_REF
# define _GLIBCXX_MOF_INV_QUALS _GLIBCXX_MOF_CV _GLIBCXX_MOF_REF
#else
# define _GLIBCXX_MOF_REF
# define _GLIBCXX_MOF_INV_QUALS _GLIBCXX_MOF_CV &
#endif

#define _GLIBCXX_MOF_CV_REF _GLIBCXX_MOF_CV _GLIBCXX_MOF_REF

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

/**
   *  @brief Polymorphic function wrapper.
   *  @ingroup functors
   *  @since C++23
   *  @headerfile functional
   *
   *  The `std::move_only_function` class template is a call wrapper similar
   *  to `std::function`, but does not require the stored target function
   *  to be copyable.
   *
   *  It also supports const-qualification, ref-qualification, and
   *  no-throw guarantees. The qualifications and exception-specification
   *  of the `move_only_function::operator()` member function are respected
   *  when invoking the target function.
   */
  template<typename _Res, typename... _ArgTypes, bool _Noex>
    class move_only_function<_Res(_ArgTypes...) _GLIBCXX_MOF_CV
			       _GLIBCXX_MOF_REF noexcept(_Noex)>
    : _Mofunc_base
    {
      template<typename _Tp>
	using __callable
	  = __conditional_t<_Noex,
			    is_nothrow_invocable_r<_Res, _Tp, _ArgTypes...>,
			    is_invocable_r<_Res, _Tp, _ArgTypes...>>;

// [func.wrap.mov.con]/1 is-callable-from<VT>
      template<typename _Vt>
	static constexpr bool __is_callable_from
	  = __and_v<__callable<_Vt _GLIBCXX_MOF_CV_REF>,
		    __callable<_Vt _GLIBCXX_MOF_INV_QUALS>>;

public:
      using result_type = _Res;

/// Creates an empty object.
      move_only_function() noexcept { }

/// Creates an empty object.
      move_only_function(nullptr_t) noexcept { }

/// Moves the target object, leaving the source empty.
      move_only_function(move_only_function&& __x) noexcept
      : _Mofunc_base(static_cast<_Mofunc_base&&>(__x)),
	_M_invoke(std::__exchange(__x._M_invoke, nullptr))
      { }

/// Stores a target object initialized from the argument.
      template<typename _Fn, typename _Vt = decay_t<_Fn>>
	requires (!is_same_v<_Vt, move_only_function>)
	  && (!__is_in_place_type_v<_Vt>) && __is_callable_from<_Vt>
	move_only_function(_Fn&& __f) noexcept(_S_nothrow_init<_Vt, _Fn>())
	{
	  if constexpr (is_function_v<remove_pointer_t<_Vt>>
			|| is_member_pointer_v<_Vt>
			|| __is_move_only_function_v<_Vt>)
	    {
	      if (__f == nullptr)
		return;
	    }
	  _M_init<_Vt>(std::forward<_Fn>(__f));
	  _M_invoke = &_S_invoke<_Vt>;
	}

/// Stores a target object initialized from the arguments.
      template<typename _Tp, typename... _Args>
	requires is_constructible_v<_Tp, _Args...>
	  && __is_callable_from<_Tp>
	explicit
	move_only_function(in_place_type_t<_Tp>, _Args&&... __args)
	noexcept(_S_nothrow_init<_Tp, _Args...>())
	: _M_invoke(&_S_invoke<_Tp>)
	{
	  static_assert(is_same_v<decay_t<_Tp>, _Tp>);
	  _M_init<_Tp>(std::forward<_Args>(__args)...);
	}

/// Stores a target object initialized from the arguments.
      template<typename _Tp, typename _Up, typename... _Args>
	requires is_constructible_v<_Tp, initializer_list<_Up>&, _Args...>
	  && __is_callable_from<_Tp>
	explicit
	move_only_function(in_place_type_t<_Tp>, initializer_list<_Up> __il,
			   _Args&&... __args)
	noexcept(_S_nothrow_init<_Tp, initializer_list<_Up>&, _Args...>())
	: _M_invoke(&_S_invoke<_Tp>)
	{
	  static_assert(is_same_v<decay_t<_Tp>, _Tp>);
	  _M_init<_Tp>(__il, std::forward<_Args>(__args)...);
	}

/// Stores a new target object, leaving `x` empty.
      move_only_function&
      operator=(move_only_function&& __x) noexcept
      {
	_Mofunc_base::operator=(static_cast<_Mofunc_base&&>(__x));
	_M_invoke = std::__exchange(__x._M_invoke, nullptr);
	return *this;
      }

/// Destroys the target object (if any).
      move_only_function&
      operator=(nullptr_t) noexcept
      {
	_Mofunc_base::operator=(nullptr);
	_M_invoke = nullptr;
	return *this;
      }

/// Stores a new target object, initialized from the argument.
      template<typename _Fn>
	requires is_constructible_v<move_only_function, _Fn>
	move_only_function&
	operator=(_Fn&& __f)
	noexcept(is_nothrow_constructible_v<move_only_function, _Fn>)
	{
	  move_only_function(std::forward<_Fn>(__f)).swap(*this);
	  return *this;
	}

~move_only_function() = default;

/// True if a target object is present, false otherwise.
      explicit operator bool() const noexcept { return _M_invoke != nullptr; }

/** Invoke the target object.
       *
       * The target object will be invoked using the supplied arguments,
       * and as an lvalue or rvalue, and as const or non-const, as dictated
       * by the template arguments of the `move_only_function` specialization.
       *
       * @pre Must not be empty.
       */
      _Res
      operator()(_ArgTypes... __args) _GLIBCXX_MOF_CV_REF noexcept(_Noex)
      {
	__glibcxx_assert(*this != nullptr);
	return _M_invoke(this, std::forward<_ArgTypes>(__args)...);
      }

/// Exchange the target objects (if any).
      void
      swap(move_only_function& __x) noexcept
      {
	_Mofunc_base::swap(__x);
	std::swap(_M_invoke, __x._M_invoke);
      }

/// Exchange the target objects (if any).
      friend void
      swap(move_only_function& __x, move_only_function& __y) noexcept
      { __x.swap(__y); }

/// Check for emptiness by comparing with `nullptr`.
      friend bool
      operator==(const move_only_function& __x, nullptr_t) noexcept
      { return __x._M_invoke == nullptr; }

private:
      template<typename _Tp>
	using __param_t = __conditional_t<is_scalar_v<_Tp>, _Tp, _Tp&&>;

using _Invoker = _Res (*)(_Mofunc_base _GLIBCXX_MOF_CV*,
				__param_t<_ArgTypes>...) noexcept(_Noex);

template<typename _Tp>
	static _Res
	_S_invoke(_Mofunc_base _GLIBCXX_MOF_CV* __self,
		  __param_t<_ArgTypes>... __args) noexcept(_Noex)
	{
	  using _TpCv = _Tp _GLIBCXX_MOF_CV;
	  using _TpInv = _Tp _GLIBCXX_MOF_INV_QUALS;
	  return std::__invoke_r<_Res>(
	      std::forward<_TpInv>(*_S_access<_TpCv>(__self)),
	      std::forward<__param_t<_ArgTypes>>(__args)...);
	}

_Invoker _M_invoke = nullptr;
    };

#undef _GLIBCXX_MOF_CV_REF
#undef _GLIBCXX_MOF_CV
#undef _GLIBCXX_MOF_REF
#undef _GLIBCXX_MOF_INV_QUALS

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

${this.title}

Code Editor : mofunc_impl.h