std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor > - Class template that holds the necessary
state for Optional values and that has the responsibility for
construction and the special members.
#include <optional>
Inherited by std::experimental::optional< _Tp >
[private].
_Optional_base (_Optional_base &&__other)
noexcept(is_nothrow_move_constructible< _Tp >())
_Optional_base (const _Optional_base &__other)
template<typename... _Args> constexpr _Optional_base
(in_place_t, _Args &&... __args)
template<typename _Up , typename... _Args,
enable_if_t< is_constructible< _Tp,
initializer_list< _Up > &, _Args
&&... >::value, int > ...> constexpr
_Optional_base (in_place_t, initializer_list<
_Up > __il, _Args &&... __args)
constexpr _Optional_base (nullopt_t) noexcept
_Optional_base & operator= (_Optional_base
&&__other) noexcept(__and_<
is_nothrow_move_constructible< _Tp >,
is_nothrow_move_assignable< _Tp > >())
_Optional_base & operator= (const
_Optional_base &__other)
template<typename... _Args> void _M_construct
(_Args &&... __args)
noexcept(is_nothrow_constructible< _Stored_type, _Args...
>())
void _M_destruct ()
constexpr const _Tp & _M_get () const
noexcept
constexpr _Tp & _M_get () noexcept
constexpr bool _M_is_engaged () const noexcept
void _M_reset ()
template<typename _Tp, bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value>
class std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >"Class template that holds the necessary
state for Optional values and that has the responsibility for
construction and the special members.
Such a separate base class template is necessary in order to
conditionally enable the special members (e.g. copy/move constructors). Note
that this means that _Optional_base implements the functionality for
copy and move assignment, but not for converting assignment.
See also
optional, _Enable_special_members
Definition at line 202 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> constexpr
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base () [inline],
[constexpr], [noexcept]
Definition at line 214 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> constexpr
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base (nullopt_t)
[inline], [constexpr], [noexcept]
Definition at line 217 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> template<typename...
_Args> constexpr std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base (in_place_t,
_Args &&... __args) [inline], [explicit],
[constexpr]
Definition at line 222 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> template<typename
_Up , typename... _Args, enable_if_t<
is_constructible< _Tp, initializer_list< _Up >
&, _Args &&... >::value, int > ...>
constexpr std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base (in_place_t,
initializer_list< _Up > __il, _Args &&...
__args) [inline], [explicit], [constexpr]
Definition at line 230 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value>
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base (const
_Optional_base< _Tp, _ShouldProvideDestructor > &
__other) [inline]
Definition at line 237 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value>
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_Optional_base
(_Optional_base< _Tp, _ShouldProvideDestructor >
&& __other) [inline], [noexcept]
Definition at line 243 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value>
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::~_Optional_base ()
[inline]
Definition at line 285 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> template<typename...
_Args> void std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_construct (_Args &&...
__args) [inline], [protected], [noexcept]
Definition at line 310 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> void
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_destruct () [inline],
[protected]
Definition at line 319 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> constexpr const
_Tp & std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_get () const [inline],
[constexpr], [protected], [noexcept]
Definition at line 303 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> constexpr _Tp &
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_get () [inline], [constexpr],
[protected], [noexcept]
Definition at line 299 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> constexpr bool
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_is_engaged () const [inline],
[constexpr], [protected], [noexcept]
Definition at line 294 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> void
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_reset () [inline],
[protected]
Definition at line 327 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> _Optional_base &
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::operator= (_Optional_base<
_Tp, _ShouldProvideDestructor > && __other) [inline],
[noexcept]
Definition at line 268 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> _Optional_base &
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::operator= (const
_Optional_base< _Tp, _ShouldProvideDestructor > &
__other) [inline]
Definition at line 252 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> _Empty_byte
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_empty
Definition at line 336 of file optional.
template<typename _Tp , bool _ShouldProvideDestructor =
!is_trivially_destructible<_Tp>::value> _Stored_type
std::experimental::_Optional_base< _Tp,
_ShouldProvideDestructor >::_M_payload
Definition at line 337 of file optional.
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