libstdc++
variant File Reference

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Namespaces

namespace  std
 
namespace  std::__detail
 

Macros

#define __cpp_lib_variant
 
#define _GLIBCXX_VARIANT
 
#define _VARIANT_RELATION_FUNCTION_TEMPLATE(__OP)
 
#define _VARIANT_RELATION_FUNCTION_TEMPLATE(__OP, __NAME)
 

Typedefs

template<size_t _Np, typename _Variant , typename _AsV = decltype(__variant::__as(std::declval<_Variant>())), typename _Tp = variant_alternative_t<_Np, remove_reference_t<_AsV>>>
using std::__detail::__variant::__get_t
 
using std::__detail::__variant::__index_type
 
template<typename _Visitor , typename... _Variants>
using std::__detail::__variant::__visit_result_t
 
template<typename... _Types>
using std::__detail::__variant::_Copy_assign_alias
 
template<typename... _Types>
using std::__detail::__variant::_Copy_ctor_alias
 
template<typename _Tp , typename _Variant >
using std::__detail::__variant::_FUN_type
 
template<typename... _Types>
using std::__detail::__variant::_Move_assign_alias
 
template<typename... _Types>
using std::__detail::__variant::_Move_ctor_alias
 
template<typename... _Types>
using std::__detail::__variant::_Variant_storage_alias
 
template<size_t _Np, typename _Variant >
using std::variant_alternative_t
 

Functions

template<typename... _Types>
constexpr const std::variant< _Types... > && std::__detail::__variant::__as (const std::variant< _Types... > &&__v) noexcept
 
template<typename... _Types>
constexpr const std::variant< _Types... > & std::__detail::__variant::__as (const std::variant< _Types... > &__v) noexcept
 
template<typename... _Types>
constexpr std::variant< _Types... > && std::__detail::__variant::__as (std::variant< _Types... > &&__v) noexcept
 
template<typename... _Types>
constexpr std::variant< _Types... > & std::__detail::__variant::__as (std::variant< _Types... > &__v) noexcept
 
template<typename _Visitor , typename _Variant , size_t... _Idxs>
constexpr bool std::__detail::__variant::__check_visitor_results (std::index_sequence< _Idxs... >)
 
template<size_t _Np, typename _Union >
constexpr decltype(autostd::__detail::__variant::__construct_n (_Union &__u) noexcept
 
template<typename _Result_type , typename _Visitor , typename... _Variants>
constexpr decltype(autostd::__do_visit (_Visitor &&__visitor, _Variants &&... __variants)
 
template<size_t _Np, bool _Triv, typename... _Types, typename... _Args>
constexpr void std::__detail::__variant::__emplace (_Variant_storage< _Triv, _Types... > &__v, _Args &&... __args)
 
template<size_t _Np, typename _Variant >
constexpr decltype(autostd::__detail::__variant::__get (_Variant &&__v) noexcept
 
template<size_t _Np, typename _Union >
constexpr decltype(autostd::__detail::__variant::__get_n (_Union &&__u) noexcept
 
template<typename _Visitor , typename... _Variants>
constexpr void std::__detail::__variant::__raw_idx_visit (_Visitor &&__visitor, _Variants &&... __variants)
 
template<typename _Visitor , typename... _Variants>
constexpr void std::__detail::__variant::__raw_visit (_Visitor &&__visitor, _Variants &&... __variants)
 
void std::__throw_bad_variant_access (bool __valueless)
 
void std::__throw_bad_variant_access (const char *__what)
 
template<typename... _Types, typename _Tp >
constexpr decltype(autostd::__variant_cast (_Tp &&__rhs)
 
template<size_t _Np, typename... _Types>
constexpr variant_alternative_t< _Np, variant< _Types... > > const && std::get (const variant< _Types... > &&)
 
template<typename _Tp , typename... _Types>
constexpr const _Tp && std::get (const variant< _Types... > &&__v)
 
template<size_t _Np, typename... _Types>
constexpr const variant_alternative_t< _Np, variant< _Types... > > && std::get (const variant< _Types... > &&__v)
 
template<size_t _Np, typename... _Types>
constexpr variant_alternative_t< _Np, variant< _Types... > > const & std::get (const variant< _Types... > &)
 
template<typename _Tp , typename... _Types>
constexpr const _Tp & std::get (const variant< _Types... > &__v)
 
template<size_t _Np, typename... _Types>
constexpr const variant_alternative_t< _Np, variant< _Types... > > & std::get (const variant< _Types... > &__v)
 
template<size_t _Np, typename... _Types>
constexpr variant_alternative_t< _Np, variant< _Types... > > && std::get (variant< _Types... > &&)
 
template<typename _Tp , typename... _Types>
constexpr _Tp && std::get (variant< _Types... > &&__v)
 
template<size_t _Np, typename... _Types>
constexpr variant_alternative_t< _Np, variant< _Types... > > & std::get (variant< _Types... > &)
 
template<typename _Tp , typename... _Types>
constexpr _Tp & std::get (variant< _Types... > &__v)
 
template<size_t _Np, typename... _Types>
constexpr add_pointer_t< const variant_alternative_t< _Np, variant< _Types... > > > std::get_if (const variant< _Types... > *__ptr) noexcept
 
template<typename _Tp , typename... _Types>
constexpr add_pointer_t< const _Tp > std::get_if (const variant< _Types... > *__ptr) noexcept
 
template<size_t _Np, typename... _Types>
constexpr add_pointer_t< variant_alternative_t< _Np, variant< _Types... > > > std::get_if (variant< _Types... > *__ptr) noexcept
 
template<typename _Tp , typename... _Types>
constexpr add_pointer_t< _Tp > std::get_if (variant< _Types... > *__ptr) noexcept
 
template<typename _Tp , typename... _Types>
constexpr bool std::holds_alternative (const variant< _Types... > &__v) noexcept
 
template<typename... _Types>
constexpr bool std::operator!= (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator!= (monostate, monostate) noexcept
 
template<typename... _Types>
constexpr bool std::operator< (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator< (monostate, monostate) noexcept
 
template<typename... _Types>
constexpr bool std::operator<= (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator<= (monostate, monostate) noexcept
 
template<typename... _Types>
constexpr bool std::operator== (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator== (monostate, monostate) noexcept
 
template<typename... _Types>
constexpr bool std::operator> (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator> (monostate, monostate) noexcept
 
template<typename... _Types>
constexpr bool std::operator>= (const variant< _Types... > &__lhs, const variant< _Types... > &__rhs)
 
constexpr bool std::operator>= (monostate, monostate) noexcept
 
template<typename... _Types>
enable_if_t<!((is_move_constructible_v< _Types > &&...) &&(is_swappable_v< _Types > &&...))> std::swap (variant< _Types... > &, variant< _Types... > &)=delete
 
template<typename... _Types>
constexpr enable_if_t<(is_move_constructible_v< _Types > &&...) &&(is_swappable_v< _Types > &&...)> std::swap (variant< _Types... > &__lhs, variant< _Types... > &__rhs) noexcept(noexcept(__lhs.swap(__rhs)))
 
template<typename _Visitor , typename... _Variants>
constexpr __detail::__variant::__visit_result_t< _Visitor, _Variants... > std::visit (_Visitor &&, _Variants &&...)
 
template<typename _Visitor , typename... _Variants>
constexpr __detail::__variant::__visit_result_t< _Visitor, _Variants... > std::visit (_Visitor &&__visitor, _Variants &&... __variants)
 
template<typename _Res , typename _Visitor , typename... _Variants>
constexpr _Res std::visit (_Visitor &&__visitor, _Variants &&... __variants)
 

Variables

template<typename _Tp , typename _Variant , typename = void>
constexpr size_t std::__detail::__variant::__accepted_index
 
template<typename _Tp , typename _Variant >
constexpr size_t std::__detail::__variant::__accepted_index< _Tp, _Variant, void_t< _FUN_type< _Tp, _Variant > > >
 
template<typename _Tp , typename... _Types>
constexpr bool std::__detail::__variant::__exactly_once
 
template<typename _Maybe_variant_cookie , typename _Variant , typename = __remove_cvref_t<_Variant>>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed
 
template<typename _Var , typename... _Types>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed< __variant_cookie, _Var, variant< _Types... > >
 
template<typename _Var , typename... _Types>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed< __variant_idx_cookie, _Var, variant< _Types... > >
 
template<typename _Tp , typename... _Types>
constexpr bool std::__detail::__variant::__same_types
 
__index_type std::__detail::__variant::_M_index
 
template<typename _Tp >
_Variadic_union< _Types... > std::__detail::__variant::_M_u
 
constexpr size_t std::variant_npos
 
template<typename _Variant >
constexpr size_t std::variant_size_v
 
template<typename... _Types>
constexpr size_t std::variant_size_v< const variant< _Types... > >
 
template<typename... _Types>
constexpr size_t std::variant_size_v< variant< _Types... > >
 

Detailed Description

This is the <variant> C++ Library header.

Definition in file variant.

Macro Definition Documentation

◆ __cpp_lib_variant

#define __cpp_lib_variant

Definition at line 55 of file variant.

◆ _GLIBCXX_VARIANT

#define _GLIBCXX_VARIANT

Definition at line 30 of file variant.

◆ _VARIANT_RELATION_FUNCTION_TEMPLATE [1/2]

#define _VARIANT_RELATION_FUNCTION_TEMPLATE ( __OP)

Definition at line 1239 of file variant.

◆ _VARIANT_RELATION_FUNCTION_TEMPLATE [2/2]

#define _VARIANT_RELATION_FUNCTION_TEMPLATE ( __OP,
__NAME )

Definition at line 1239 of file variant.

Typedef Documentation

◆ __get_t

template<size_t _Np, typename _Variant , typename _AsV = decltype(__variant::__as(std::declval<_Variant>())), typename _Tp = variant_alternative_t<_Np, remove_reference_t<_AsV>>>
using std::__detail::__variant::__get_t

Definition at line 1116 of file variant.

◆ __index_type

using std::__detail::__variant::__index_type

Definition at line 517 of file variant.

◆ __visit_result_t

template<typename _Visitor , typename... _Variants>
using std::__detail::__variant::__visit_result_t

Definition at line 1120 of file variant.

◆ _Copy_assign_alias

template<typename... _Types>
using std::__detail::__variant::_Copy_assign_alias

Definition at line 704 of file variant.

◆ _Copy_ctor_alias

template<typename... _Types>
using std::__detail::__variant::_Copy_ctor_alias

Definition at line 614 of file variant.

◆ _FUN_type

template<typename _Tp , typename _Variant >
using std::__detail::__variant::_FUN_type

Definition at line 821 of file variant.

◆ _Move_assign_alias

template<typename... _Types>
using std::__detail::__variant::_Move_assign_alias

Definition at line 758 of file variant.

◆ _Move_ctor_alias

template<typename... _Types>
using std::__detail::__variant::_Move_ctor_alias

Definition at line 652 of file variant.

◆ _Variant_storage_alias

template<typename... _Types>
using std::__detail::__variant::_Variant_storage_alias

Definition at line 574 of file variant.

Function Documentation

◆ __as() [1/4]

template<typename... _Types>
constexpr const std::variant< _Types... > && std::__detail::__variant::__as ( const std::variant< _Types... > && __v)
constexprnoexcept

Definition at line 206 of file variant.

◆ __as() [2/4]

template<typename... _Types>
constexpr const std::variant< _Types... > & std::__detail::__variant::__as ( const std::variant< _Types... > & __v)
constexprnoexcept

Definition at line 196 of file variant.

◆ __as() [3/4]

template<typename... _Types>
constexpr std::variant< _Types... > && std::__detail::__variant::__as ( std::variant< _Types... > && __v)
constexprnoexcept

Definition at line 201 of file variant.

◆ __as() [4/4]

template<typename... _Types>
constexpr std::variant< _Types... > & std::__detail::__variant::__as ( std::variant< _Types... > & __v)
constexprnoexcept

Definition at line 191 of file variant.

◆ __check_visitor_results()

template<typename _Visitor , typename _Variant , size_t... _Idxs>
constexpr bool std::__detail::__variant::__check_visitor_results ( std::index_sequence< _Idxs... > )
constexpr

Definition at line 1126 of file variant.

◆ __construct_n()

template<size_t _Np, typename _Union >
constexpr decltype(auto) std::__detail::__variant::__construct_n ( _Union & __u)
constexprnoexcept

Definition at line 326 of file variant.

◆ __emplace()

template<size_t _Np, bool _Triv, typename... _Types, typename... _Args>
constexpr void std::__detail::__variant::__emplace ( _Variant_storage< _Triv, _Types... > & __v,
_Args &&... __args )
inlineconstexpr

Definition at line 563 of file variant.

◆ __get()

template<size_t _Np, typename _Variant >
constexpr decltype(auto) std::__detail::__variant::__get ( _Variant && __v)
constexprnoexcept

Definition at line 320 of file variant.

◆ __get_n()

template<size_t _Np, typename _Union >
constexpr decltype(auto) std::__detail::__variant::__get_n ( _Union && __u)
constexprnoexcept

Definition at line 304 of file variant.

◆ __raw_idx_visit()

template<typename _Visitor , typename... _Variants>
constexpr void std::__detail::__variant::__raw_idx_visit ( _Visitor && __visitor,
_Variants &&... __variants )
constexpr

Definition at line 181 of file variant.

◆ __raw_visit()

template<typename _Visitor , typename... _Variants>
constexpr void std::__detail::__variant::__raw_visit ( _Visitor && __visitor,
_Variants &&... __variants )
constexpr

Definition at line 172 of file variant.

Variable Documentation

◆ __accepted_index

template<typename _Tp , typename _Variant , typename = void>
constexpr size_t std::__detail::__variant::__accepted_index
inlineconstexpr

Definition at line 826 of file variant.

◆ __accepted_index< _Tp, _Variant, void_t< _FUN_type< _Tp, _Variant > > >

template<typename _Tp , typename _Variant >
constexpr size_t std::__detail::__variant::__accepted_index< _Tp, _Variant, void_t< _FUN_type< _Tp, _Variant > > >
inlineconstexpr

Definition at line 829 of file variant.

◆ __exactly_once

template<typename _Tp , typename... _Types>
constexpr bool std::__detail::__variant::__exactly_once
inlineconstexpr

Definition at line 783 of file variant.

◆ __extra_visit_slot_needed

template<typename _Maybe_variant_cookie , typename _Variant , typename = __remove_cvref_t<_Variant>>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed
inlineconstexpr

Definition at line 836 of file variant.

◆ __extra_visit_slot_needed< __variant_cookie, _Var, variant< _Types... > >

template<typename _Var , typename... _Types>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed< __variant_cookie, _Var, variant< _Types... > >
inlineconstexpr

Definition at line 839 of file variant.

◆ __extra_visit_slot_needed< __variant_idx_cookie, _Var, variant< _Types... > >

template<typename _Var , typename... _Types>
constexpr bool std::__detail::__variant::__extra_visit_slot_needed< __variant_idx_cookie, _Var, variant< _Types... > >
inlineconstexpr

Definition at line 844 of file variant.

◆ __same_types

template<typename _Tp , typename... _Types>
constexpr bool std::__detail::__variant::__same_types
inlineconstexpr

Definition at line 1123 of file variant.

◆ _M_index

__index_type std::__detail::__variant::_M_index

Definition at line 518 of file variant.

◆ _M_u

template<typename _Tp >
_Variadic_union<_Types...> std::__detail::__variant::_M_u

Definition at line 516 of file variant.