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variant.hpp
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// Copyright 2016-2018 by Martin Moene
//
// https://github.com/martinmoene/variant-lite
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#pragma once
#ifndef NONSTD_VARIANT_LITE_HPP
#define NONSTD_VARIANT_LITE_HPP
#define variant_lite_MAJOR 2
#define variant_lite_MINOR 0
#define variant_lite_PATCH 0
#define variant_lite_VERSION variant_STRINGIFY(variant_lite_MAJOR) "." variant_STRINGIFY(variant_lite_MINOR) "." variant_STRINGIFY(variant_lite_PATCH)
#define variant_STRINGIFY( x ) variant_STRINGIFY_( x )
#define variant_STRINGIFY_( x ) #x
// variant-lite configuration:
#define variant_VARIANT_DEFAULT 0
#define variant_VARIANT_NONSTD 1
#define variant_VARIANT_STD 2
// tweak header support:
#ifdef __has_include
# if __has_include(<nonstd/variant.tweak.hpp>)
# include <nonstd/variant.tweak.hpp>
# endif
#define variant_HAVE_TWEAK_HEADER 1
#else
#define variant_HAVE_TWEAK_HEADER 0
//# pragma message("variant.hpp: Note: Tweak header not supported.")
#endif
// variant selection and configuration:
#ifndef variant_CONFIG_OMIT_VARIANT_SIZE_V_MACRO
# define variant_CONFIG_OMIT_VARIANT_SIZE_V_MACRO 0
#endif
#ifndef variant_CONFIG_OMIT_VARIANT_ALTERNATIVE_T_MACRO
# define variant_CONFIG_OMIT_VARIANT_ALTERNATIVE_T_MACRO 0
#endif
// Control presence of exception handling (try and auto discover):
#ifndef variant_CONFIG_NO_EXCEPTIONS
# if defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)
# define variant_CONFIG_NO_EXCEPTIONS 0
# else
# define variant_CONFIG_NO_EXCEPTIONS 1
# endif
#endif
// C++ language version detection (C++20 is speculative):
// Note: VC14.0/1900 (VS2015) lacks too much from C++14.
#ifndef variant_CPLUSPLUS
# if defined(_MSVC_LANG ) && !defined(__clang__)
# define variant_CPLUSPLUS (_MSC_VER == 1900 ? 201103L : _MSVC_LANG )
# else
# define variant_CPLUSPLUS __cplusplus
# endif
#endif
#define variant_CPP98_OR_GREATER ( variant_CPLUSPLUS >= 199711L )
#define variant_CPP11_OR_GREATER ( variant_CPLUSPLUS >= 201103L )
#define variant_CPP11_OR_GREATER_ ( variant_CPLUSPLUS >= 201103L )
#define variant_CPP14_OR_GREATER ( variant_CPLUSPLUS >= 201402L )
#define variant_CPP17_OR_GREATER ( variant_CPLUSPLUS >= 201703L )
#define variant_CPP20_OR_GREATER ( variant_CPLUSPLUS >= 202000L )
// Use C++17 std::variant if available and requested:
#if variant_CPP17_OR_GREATER && defined(__has_include )
# if __has_include( <variant> )
# define variant_HAVE_STD_VARIANT 1
# else
# define variant_HAVE_STD_VARIANT 0
# endif
#else
# define variant_HAVE_STD_VARIANT 0
#endif
#if !defined( variant_CONFIG_SELECT_VARIANT )
# define variant_CONFIG_SELECT_VARIANT ( variant_HAVE_STD_VARIANT ? variant_VARIANT_STD : variant_VARIANT_NONSTD )
#endif
#define variant_USES_STD_VARIANT ( (variant_CONFIG_SELECT_VARIANT == variant_VARIANT_STD) || ((variant_CONFIG_SELECT_VARIANT == variant_VARIANT_DEFAULT) && variant_HAVE_STD_VARIANT) )
//
// in_place: code duplicated in any-lite, expected-lite, optional-lite, value-ptr-lite, variant-lite:
//
#ifndef nonstd_lite_HAVE_IN_PLACE_TYPES
#define nonstd_lite_HAVE_IN_PLACE_TYPES 1
// C++17 std::in_place in <utility>:
#if variant_CPP17_OR_GREATER
#include <utility>
namespace nonstd {
using std::in_place;
using std::in_place_type;
using std::in_place_index;
using std::in_place_t;
using std::in_place_type_t;
using std::in_place_index_t;
#define nonstd_lite_in_place_t( T) std::in_place_t
#define nonstd_lite_in_place_type_t( T) std::in_place_type_t<T>
#define nonstd_lite_in_place_index_t(K) std::in_place_index_t<K>
#define nonstd_lite_in_place( T) std::in_place_t{}
#define nonstd_lite_in_place_type( T) std::in_place_type_t<T>{}
#define nonstd_lite_in_place_index(K) std::in_place_index_t<K>{}
} // namespace nonstd
#else // variant_CPP17_OR_GREATER
#include <cstddef>
namespace nonstd {
namespace detail {
template< class T >
struct in_place_type_tag {};
template< std::size_t K >
struct in_place_index_tag {};
} // namespace detail
struct in_place_t {};
template< class T >
inline in_place_t in_place( detail::in_place_type_tag<T> = detail::in_place_type_tag<T>() )
{
return in_place_t();
}
template< std::size_t K >
inline in_place_t in_place( detail::in_place_index_tag<K> = detail::in_place_index_tag<K>() )
{
return in_place_t();
}
template< class T >
inline in_place_t in_place_type( detail::in_place_type_tag<T> = detail::in_place_type_tag<T>() )
{
return in_place_t();
}
template< std::size_t K >
inline in_place_t in_place_index( detail::in_place_index_tag<K> = detail::in_place_index_tag<K>() )
{
return in_place_t();
}
// mimic templated typedef:
#define nonstd_lite_in_place_t( T) nonstd::in_place_t(&)( nonstd::detail::in_place_type_tag<T> )
#define nonstd_lite_in_place_type_t( T) nonstd::in_place_t(&)( nonstd::detail::in_place_type_tag<T> )
#define nonstd_lite_in_place_index_t(K) nonstd::in_place_t(&)( nonstd::detail::in_place_index_tag<K> )
#define nonstd_lite_in_place( T) nonstd::in_place_type<T>
#define nonstd_lite_in_place_type( T) nonstd::in_place_type<T>
#define nonstd_lite_in_place_index(K) nonstd::in_place_index<K>
} // namespace nonstd
#endif // variant_CPP17_OR_GREATER
#endif // nonstd_lite_HAVE_IN_PLACE_TYPES
// in_place_index-like disambiguation tag identical for all C++ versions:
namespace nonstd {
namespace variants {
namespace detail {
template< std::size_t K >
struct index_tag_t {};
template< std::size_t K >
inline void index_tag ( index_tag_t<K> = index_tag_t<K>() ) { }
#define variant_index_tag_t(K) void(&)( nonstd::variants::detail::index_tag_t<K> )
#define variant_index_tag(K) nonstd::variants::detail::index_tag<K>
} // namespace detail
} // namespace variants
} // namespace nonstd
//
// Use C++17 std::variant:
//
#if variant_USES_STD_VARIANT
#include <functional> // std::hash<>
#include <variant>
#if ! variant_CONFIG_OMIT_VARIANT_SIZE_V_MACRO
# define variant_size_V(T) nonstd::variant_size<T>::value
#endif
#if ! variant_CONFIG_OMIT_VARIANT_ALTERNATIVE_T_MACRO
# define variant_alternative_T(K,T) typename nonstd::variant_alternative<K,T >::type
#endif
namespace nonstd {
using std::variant;
using std::monostate;
using std::bad_variant_access;
using std::variant_size;
using std::variant_size_v;
using std::variant_alternative;
using std::variant_alternative_t;
using std::hash;
using std::visit;
using std::holds_alternative;
using std::get;
using std::get_if;
using std::operator==;
using std::operator!=;
using std::operator<;
using std::operator<=;
using std::operator>;
using std::operator>=;
using std::swap;
constexpr auto variant_npos = std::variant_npos;
}
#else // variant_USES_STD_VARIANT
#include <cstddef>
#include <limits>
#include <new>
#include <utility>
#if variant_CONFIG_NO_EXCEPTIONS
# include <cassert>
#else
# include <stdexcept>
#endif
// variant-lite type and visitor argument count configuration (script/generate_header.py):
#define variant_CONFIG_MAX_TYPE_COUNT 16
#define variant_CONFIG_MAX_VISITOR_ARG_COUNT 5
// variant-lite alignment configuration:
#ifndef variant_CONFIG_MAX_ALIGN_HACK
# define variant_CONFIG_MAX_ALIGN_HACK 0
#endif
#ifndef variant_CONFIG_ALIGN_AS
// no default, used in #if defined()
#endif
#ifndef variant_CONFIG_ALIGN_AS_FALLBACK
# define variant_CONFIG_ALIGN_AS_FALLBACK double
#endif
// half-open range [lo..hi):
#define variant_BETWEEN( v, lo, hi ) ( (lo) <= (v) && (v) < (hi) )
// Compiler versions:
//
// MSVC++ 6.0 _MSC_VER == 1200 variant_COMPILER_MSVC_VERSION == 60 (Visual Studio 6.0)
// MSVC++ 7.0 _MSC_VER == 1300 variant_COMPILER_MSVC_VERSION == 70 (Visual Studio .NET 2002)
// MSVC++ 7.1 _MSC_VER == 1310 variant_COMPILER_MSVC_VERSION == 71 (Visual Studio .NET 2003)
// MSVC++ 8.0 _MSC_VER == 1400 variant_COMPILER_MSVC_VERSION == 80 (Visual Studio 2005)
// MSVC++ 9.0 _MSC_VER == 1500 variant_COMPILER_MSVC_VERSION == 90 (Visual Studio 2008)
// MSVC++ 10.0 _MSC_VER == 1600 variant_COMPILER_MSVC_VERSION == 100 (Visual Studio 2010)
// MSVC++ 11.0 _MSC_VER == 1700 variant_COMPILER_MSVC_VERSION == 110 (Visual Studio 2012)
// MSVC++ 12.0 _MSC_VER == 1800 variant_COMPILER_MSVC_VERSION == 120 (Visual Studio 2013)
// MSVC++ 14.0 _MSC_VER == 1900 variant_COMPILER_MSVC_VERSION == 140 (Visual Studio 2015)
// MSVC++ 14.1 _MSC_VER >= 1910 variant_COMPILER_MSVC_VERSION == 141 (Visual Studio 2017)
// MSVC++ 14.2 _MSC_VER >= 1920 variant_COMPILER_MSVC_VERSION == 142 (Visual Studio 2019)
#if defined(_MSC_VER ) && !defined(__clang__)
# define variant_COMPILER_MSVC_VER (_MSC_VER )
# define variant_COMPILER_MSVC_VERSION (_MSC_VER / 10 - 10 * ( 5 + (_MSC_VER < 1900 ) ) )
#else
# define variant_COMPILER_MSVC_VER 0
# define variant_COMPILER_MSVC_VERSION 0
#endif
#define variant_COMPILER_VERSION( major, minor, patch ) ( 10 * ( 10 * (major) + (minor) ) + (patch) )
#if defined(__clang__)
# define variant_COMPILER_CLANG_VERSION variant_COMPILER_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__)
#else
# define variant_COMPILER_CLANG_VERSION 0
#endif
#if defined(__GNUC__) && !defined(__clang__)
# define variant_COMPILER_GNUC_VERSION variant_COMPILER_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
#else
# define variant_COMPILER_GNUC_VERSION 0
#endif
#if variant_BETWEEN( variant_COMPILER_MSVC_VER, 1300, 1900 )
# pragma warning( push )
# pragma warning( disable: 4345 ) // initialization behavior changed
#endif
// Presence of language and library features:
#define variant_HAVE( feature ) ( variant_HAVE_##feature )
#ifdef _HAS_CPP0X
# define variant_HAS_CPP0X _HAS_CPP0X
#else
# define variant_HAS_CPP0X 0
#endif
// Unless defined otherwise below, consider VC14 as C++11 for variant-lite:
#if variant_COMPILER_MSVC_VER >= 1900
# undef variant_CPP11_OR_GREATER
# define variant_CPP11_OR_GREATER 1
#endif
#define variant_CPP11_90 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1500)
#define variant_CPP11_100 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1600)
#define variant_CPP11_110 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1700)
#define variant_CPP11_120 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1800)
#define variant_CPP11_140 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1900)
#define variant_CPP11_141 (variant_CPP11_OR_GREATER_ || variant_COMPILER_MSVC_VER >= 1910)
#define variant_CPP14_000 (variant_CPP14_OR_GREATER)
#define variant_CPP17_000 (variant_CPP17_OR_GREATER)
// Presence of C++11 language features:
#define variant_HAVE_CONSTEXPR_11 variant_CPP11_140
#define variant_HAVE_INITIALIZER_LIST variant_CPP11_120
#define variant_HAVE_NOEXCEPT variant_CPP11_140
#define variant_HAVE_NULLPTR variant_CPP11_100
#define variant_HAVE_OVERRIDE variant_CPP11_140
// Presence of C++14 language features:
#define variant_HAVE_CONSTEXPR_14 variant_CPP14_000
// Presence of C++17 language features:
// no flag
// Presence of C++ library features:
#define variant_HAVE_CONDITIONAL variant_CPP11_120
#define variant_HAVE_REMOVE_CV variant_CPP11_120
#define variant_HAVE_STD_ADD_POINTER variant_CPP11_90
#define variant_HAVE_TYPE_TRAITS variant_CPP11_90
#define variant_HAVE_ENABLE_IF variant_CPP11_90
#define variant_HAVE_IS_SAME variant_CPP11_90
#define variant_HAVE_TR1_TYPE_TRAITS (!! variant_COMPILER_GNUC_VERSION )
#define variant_HAVE_TR1_ADD_POINTER (!! variant_COMPILER_GNUC_VERSION )
// C++ feature usage:
#if variant_HAVE_CONSTEXPR_11
# define variant_constexpr constexpr
#else
# define variant_constexpr /*constexpr*/
#endif
#if variant_HAVE_CONSTEXPR_14
# define variant_constexpr14 constexpr
#else
# define variant_constexpr14 /*constexpr*/
#endif
#if variant_HAVE_NOEXCEPT
# define variant_noexcept noexcept
#else
# define variant_noexcept /*noexcept*/
#endif
#if variant_HAVE_NULLPTR
# define variant_nullptr nullptr
#else
# define variant_nullptr NULL
#endif
#if variant_HAVE_OVERRIDE
# define variant_override override
#else
# define variant_override /*override*/
#endif
// additional includes:
#if variant_CPP11_OR_GREATER
# include <functional> // std::hash
#endif
#if variant_HAVE_INITIALIZER_LIST
# include <initializer_list>
#endif
#if variant_HAVE_TYPE_TRAITS
# include <type_traits>
#elif variant_HAVE_TR1_TYPE_TRAITS
# include <tr1/type_traits>
#endif
//
// variant:
//
namespace nonstd { namespace variants {
// C++11 emulation:
namespace std11 {
#if variant_HAVE_STD_ADD_POINTER
using std::add_pointer;
#elif variant_HAVE_TR1_ADD_POINTER
using std::tr1::add_pointer;
#else
template< class T > struct remove_reference { typedef T type; };
template< class T > struct remove_reference<T&> { typedef T type; };
template< class T > struct add_pointer
{
typedef typename remove_reference<T>::type * type;
};
#endif // variant_HAVE_STD_ADD_POINTER
#if variant_HAVE_REMOVE_CV
using std::remove_cv;
#else
template< class T > struct remove_const { typedef T type; };
template< class T > struct remove_const<const T> { typedef T type; };
template< class T > struct remove_volatile { typedef T type; };
template< class T > struct remove_volatile<volatile T> { typedef T type; };
template< class T >
struct remove_cv
{
typedef typename remove_volatile<typename remove_const<T>::type>::type type;
};
#endif // variant_HAVE_REMOVE_CV
#if variant_HAVE_CONDITIONAL
using std::conditional;
#else
template< bool Cond, class Then, class Else >
struct conditional;
template< class Then, class Else >
struct conditional< true , Then, Else > { typedef Then type; };
template< class Then, class Else >
struct conditional< false, Then, Else > { typedef Else type; };
#endif // variant_HAVE_CONDITIONAL
#if variant_HAVE_ENABLE_IF
using std::enable_if;
#else
template< bool B, class T = void >
struct enable_if { };
template< class T >
struct enable_if< true, T > { typedef T type; };
#endif // variant_HAVE_ENABLE_IF
#if variant_HAVE_IS_SAME
using std::is_same;
#else
template< class T, class U >
struct is_same {
enum V { value = 0 } ;
};
template< class T >
struct is_same< T, T > {
enum V { value = 1 } ;
};
#endif // variant_HAVE_IS_SAME
} // namespace std11
// Method enabling
#if variant_CPP11_OR_GREATER
#define variant_REQUIRES_T(...) \
, typename std::enable_if< (__VA_ARGS__), int >::type = 0
#define variant_REQUIRES_R(R, ...) \
typename std::enable_if< (__VA_ARGS__), R>::type
#define variant_REQUIRES_A(...) \
, typename std::enable_if< (__VA_ARGS__), void*>::type = nullptr
#endif // variant_CPP11_OR_GREATER
#define variant_REQUIRES_0(...) \
template< bool B = (__VA_ARGS__), typename std11::enable_if<B, int>::type = 0 >
#define variant_REQUIRES_B(...) \
, bool B = (__VA_ARGS__), typename std11::enable_if<B, int>::type = 0
namespace std17 {
#if variant_CPP17_OR_GREATER
using std::is_swappable;
using std::is_nothrow_swappable;
#elif variant_CPP11_OR_GREATER
namespace detail {
using std::swap;
struct is_swappable
{
template< typename T, typename = decltype( swap( std::declval<T&>(), std::declval<T&>() ) ) >
static std::true_type test( int );
template< typename >
static std::false_type test(...);
};
struct is_nothrow_swappable
{
// wrap noexcept(epr) in separate function as work-around for VC140 (VS2015):
template< typename T >
static constexpr bool test()
{
return noexcept( swap( std::declval<T&>(), std::declval<T&>() ) );
}
template< typename T >
static auto test( int ) -> std::integral_constant<bool, test<T>()>{}
template< typename >
static std::false_type test(...);
};
} // namespace detail
// is [nothow] swappable:
template< typename T >
struct is_swappable : decltype( detail::is_swappable::test<T>(0) ){};
template< typename T >
struct is_nothrow_swappable : decltype( detail::is_nothrow_swappable::test<T>(0) ){};
#endif // variant_CPP17_OR_GREATER
} // namespace std17
// detail:
namespace detail {
// typelist:
#define variant_TL1( T1 ) detail::typelist< T1, detail::nulltype >
#define variant_TL2( T1, T2) detail::typelist< T1, variant_TL1( T2) >
#define variant_TL3( T1, T2, T3) detail::typelist< T1, variant_TL2( T2, T3) >
#define variant_TL4( T1, T2, T3, T4) detail::typelist< T1, variant_TL3( T2, T3, T4) >
#define variant_TL5( T1, T2, T3, T4, T5) detail::typelist< T1, variant_TL4( T2, T3, T4, T5) >
#define variant_TL6( T1, T2, T3, T4, T5, T6) detail::typelist< T1, variant_TL5( T2, T3, T4, T5, T6) >
#define variant_TL7( T1, T2, T3, T4, T5, T6, T7) detail::typelist< T1, variant_TL6( T2, T3, T4, T5, T6, T7) >
#define variant_TL8( T1, T2, T3, T4, T5, T6, T7, T8) detail::typelist< T1, variant_TL7( T2, T3, T4, T5, T6, T7, T8) >
#define variant_TL9( T1, T2, T3, T4, T5, T6, T7, T8, T9) detail::typelist< T1, variant_TL8( T2, T3, T4, T5, T6, T7, T8, T9) >
#define variant_TL10( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) detail::typelist< T1, variant_TL9( T2, T3, T4, T5, T6, T7, T8, T9, T10) >
#define variant_TL11( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) detail::typelist< T1, variant_TL10( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) >
#define variant_TL12( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) detail::typelist< T1, variant_TL11( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) >
#define variant_TL13( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) detail::typelist< T1, variant_TL12( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) >
#define variant_TL14( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) detail::typelist< T1, variant_TL13( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) >
#define variant_TL15( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) detail::typelist< T1, variant_TL14( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) >
#define variant_TL16( T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16) detail::typelist< T1, variant_TL15( T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16) >
// variant parameter unused type tags:
template< class T >
struct TX : T
{
inline TX<T> operator+ ( ) const { return TX<T>(); }
inline TX<T> operator- ( ) const { return TX<T>(); }
inline TX<T> operator! ( ) const { return TX<T>(); }
inline TX<T> operator~ ( ) const { return TX<T>(); }
inline TX<T>*operator& ( ) const { return variant_nullptr; }
template< class U > inline TX<T> operator* ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator/ ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator% ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator+ ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator- ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator<<( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator>>( U const & ) const { return TX<T>(); }
inline bool operator==( T const & ) const { return false; }
inline bool operator< ( T const & ) const { return false; }
template< class U > inline TX<T> operator& ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator| ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator^ ( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator&&( U const & ) const { return TX<T>(); }
template< class U > inline TX<T> operator||( U const & ) const { return TX<T>(); }
};
struct S0{}; typedef TX<S0> T0;
struct S1{}; typedef TX<S1> T1;
struct S2{}; typedef TX<S2> T2;
struct S3{}; typedef TX<S3> T3;
struct S4{}; typedef TX<S4> T4;
struct S5{}; typedef TX<S5> T5;
struct S6{}; typedef TX<S6> T6;
struct S7{}; typedef TX<S7> T7;
struct S8{}; typedef TX<S8> T8;
struct S9{}; typedef TX<S9> T9;
struct S10{}; typedef TX<S10> T10;
struct S11{}; typedef TX<S11> T11;
struct S12{}; typedef TX<S12> T12;
struct S13{}; typedef TX<S13> T13;
struct S14{}; typedef TX<S14> T14;
struct S15{}; typedef TX<S15> T15;
struct nulltype{};
template< class Head, class Tail >
struct typelist
{
typedef Head head;
typedef Tail tail;
};
// typelist max element size:
template< class List >
struct typelist_max;
template<>
struct typelist_max< nulltype >
{
enum V { value = 0 } ;
typedef void type;
};
template< class Head, class Tail >
struct typelist_max< typelist<Head, Tail> >
{
private:
enum TV { tail_value = size_t( typelist_max<Tail>::value ) };
typedef typename typelist_max<Tail>::type tail_type;
public:
enum V { value = (sizeof( Head ) > tail_value) ? sizeof( Head ) : std::size_t( tail_value ) } ;
typedef typename std11::conditional< (sizeof( Head ) > tail_value), Head, tail_type>::type type;
};
#if variant_CPP11_OR_GREATER
// typelist max alignof element type:
template< class List >
struct typelist_max_alignof;
template<>
struct typelist_max_alignof< nulltype >
{
enum V { value = 0 } ;
};
template< class Head, class Tail >
struct typelist_max_alignof< typelist<Head, Tail> >
{
private:
enum TV { tail_value = size_t( typelist_max_alignof<Tail>::value ) };
public:
enum V { value = (alignof( Head ) > tail_value) ? alignof( Head ) : std::size_t( tail_value ) };
};
#endif
// typelist size (length):
template< class List >
struct typelist_size
{
enum V { value = 1 };
};
template<> struct typelist_size< T0 > { enum V { value = 0 }; };
template<> struct typelist_size< T1 > { enum V { value = 0 }; };
template<> struct typelist_size< T2 > { enum V { value = 0 }; };
template<> struct typelist_size< T3 > { enum V { value = 0 }; };
template<> struct typelist_size< T4 > { enum V { value = 0 }; };
template<> struct typelist_size< T5 > { enum V { value = 0 }; };
template<> struct typelist_size< T6 > { enum V { value = 0 }; };
template<> struct typelist_size< T7 > { enum V { value = 0 }; };
template<> struct typelist_size< T8 > { enum V { value = 0 }; };
template<> struct typelist_size< T9 > { enum V { value = 0 }; };
template<> struct typelist_size< T10 > { enum V { value = 0 }; };
template<> struct typelist_size< T11 > { enum V { value = 0 }; };
template<> struct typelist_size< T12 > { enum V { value = 0 }; };
template<> struct typelist_size< T13 > { enum V { value = 0 }; };
template<> struct typelist_size< T14 > { enum V { value = 0 }; };
template<> struct typelist_size< T15 > { enum V { value = 0 }; };
template<> struct typelist_size< nulltype > { enum V { value = 0 } ; };
template< class Head, class Tail >
struct typelist_size< typelist<Head, Tail> >
{
enum V { value = size_t(typelist_size<Head>::value) + size_t(typelist_size<Tail>::value) };
};
// typelist index of type:
template< class List, class T >
struct typelist_index_of;
template< class T >
struct typelist_index_of< nulltype, T >
{
enum V { value = -1 };
};
template< class Tail, class T >
struct typelist_index_of< typelist<T, Tail>, T >
{
enum V { value = 0 };
};
template< class Head, class Tail, class T >
struct typelist_index_of< typelist<Head, Tail>, T >
{
private:
enum TV { nextVal = typelist_index_of<Tail, T>::value };
public:
enum V { value = nextVal == -1 ? -1 : 1 + nextVal } ;
};
// typelist type at index:
template< class List, std::size_t i>
struct typelist_type_at;
template< class Head, class Tail >
struct typelist_type_at< typelist<Head, Tail>, 0 >
{
typedef Head type;
};
template< class Head, class Tail, std::size_t i >
struct typelist_type_at< typelist<Head, Tail>, i >
{
typedef typename typelist_type_at<Tail, i - 1>::type type;
};
// typelist type is unique:
template< class List, std::size_t CmpIndex, std::size_t LastChecked = typelist_size<List>::value >
struct typelist_type_is_unique
{
private:
typedef typename typelist_type_at<List, CmpIndex>::type cmp_type;
typedef typename typelist_type_at<List, LastChecked - 1>::type cur_type;
public:
enum V { value = ((CmpIndex == (LastChecked - 1)) | !std11::is_same<cmp_type, cur_type>::value)
&& typelist_type_is_unique<List, CmpIndex, LastChecked - 1>::value } ;
};
template< class List, std::size_t CmpIndex >
struct typelist_type_is_unique< List, CmpIndex, 0 >
{
enum V { value = 1 } ;
};
template< class List, class T >
struct typelist_contains_unique_type : typelist_type_is_unique< List, typelist_index_of< List, T >::value >
{
};
#if variant_CONFIG_MAX_ALIGN_HACK
// Max align, use most restricted type for alignment:
#define variant_UNIQUE( name ) variant_UNIQUE2( name, __LINE__ )
#define variant_UNIQUE2( name, line ) variant_UNIQUE3( name, line )
#define variant_UNIQUE3( name, line ) name ## line
#define variant_ALIGN_TYPE( type ) \
type variant_UNIQUE( _t ); struct_t< type > variant_UNIQUE( _st )
template< class T >
struct struct_t { T _; };
union max_align_t
{
variant_ALIGN_TYPE( char );
variant_ALIGN_TYPE( short int );
variant_ALIGN_TYPE( int );
variant_ALIGN_TYPE( long int );
variant_ALIGN_TYPE( float );
variant_ALIGN_TYPE( double );
variant_ALIGN_TYPE( long double );
variant_ALIGN_TYPE( char * );
variant_ALIGN_TYPE( short int * );
variant_ALIGN_TYPE( int * );
variant_ALIGN_TYPE( long int * );
variant_ALIGN_TYPE( float * );
variant_ALIGN_TYPE( double * );
variant_ALIGN_TYPE( long double * );
variant_ALIGN_TYPE( void * );
#ifdef HAVE_LONG_LONG
variant_ALIGN_TYPE( long long );
#endif
struct Unknown;
Unknown ( * variant_UNIQUE(_) )( Unknown );
Unknown * Unknown::* variant_UNIQUE(_);
Unknown ( Unknown::* variant_UNIQUE(_) )( Unknown );
struct_t< Unknown ( * )( Unknown) > variant_UNIQUE(_);
struct_t< Unknown * Unknown::* > variant_UNIQUE(_);
struct_t< Unknown ( Unknown::* )(Unknown) > variant_UNIQUE(_);
};
#undef variant_UNIQUE
#undef variant_UNIQUE2
#undef variant_UNIQUE3
#undef variant_ALIGN_TYPE
#elif defined( variant_CONFIG_ALIGN_AS ) // variant_CONFIG_MAX_ALIGN_HACK
// Use user-specified type for alignment:
#define variant_ALIGN_AS( unused ) \
variant_CONFIG_ALIGN_AS
#else // variant_CONFIG_MAX_ALIGN_HACK
// Determine POD type to use for alignment:
#define variant_ALIGN_AS( to_align ) \
typename detail::type_of_size< detail::alignment_types, detail::alignment_of< to_align >::value >::type
template< typename T >
struct alignment_of;
template< typename T >
struct alignment_of_hack
{
char c;
T t;
alignment_of_hack();
};
template< size_t A, size_t S >
struct alignment_logic
{
enum V { value = A < S ? A : S };
};
template< typename T >
struct alignment_of
{
enum V { value = alignment_logic<
sizeof( alignment_of_hack<T> ) - sizeof(T), sizeof(T) >::value };
};
template< typename List, size_t N >
struct type_of_size
{
typedef typename std11::conditional<
N == sizeof( typename List::head ),
typename List::head,
typename type_of_size<typename List::tail, N >::type >::type type;
};
template< size_t N >
struct type_of_size< nulltype, N >
{
typedef variant_CONFIG_ALIGN_AS_FALLBACK type;
};
template< typename T>
struct struct_t { T _; };
#define variant_ALIGN_TYPE( type ) \
typelist< type , typelist< struct_t< type >
struct Unknown;
typedef
variant_ALIGN_TYPE( char ),
variant_ALIGN_TYPE( short ),
variant_ALIGN_TYPE( int ),
variant_ALIGN_TYPE( long ),
variant_ALIGN_TYPE( float ),
variant_ALIGN_TYPE( double ),
variant_ALIGN_TYPE( long double ),
variant_ALIGN_TYPE( char *),
variant_ALIGN_TYPE( short * ),
variant_ALIGN_TYPE( int * ),
variant_ALIGN_TYPE( long * ),
variant_ALIGN_TYPE( float * ),
variant_ALIGN_TYPE( double * ),
variant_ALIGN_TYPE( long double * ),
variant_ALIGN_TYPE( Unknown ( * )( Unknown ) ),
variant_ALIGN_TYPE( Unknown * Unknown::* ),
variant_ALIGN_TYPE( Unknown ( Unknown::* )( Unknown ) ),
nulltype
> > > > > > > > > > > > > >
> > > > > > > > > > > > > >
> > > > > >
alignment_types;
#undef variant_ALIGN_TYPE
#endif // variant_CONFIG_MAX_ALIGN_HACK
#if variant_CPP11_OR_GREATER
template< typename T>
inline std::size_t hash( T const & v )
{
return std::hash<T>()( v );
}
inline std::size_t hash( T0 const & ) { return 0; }
inline std::size_t hash( T1 const & ) { return 0; }
inline std::size_t hash( T2 const & ) { return 0; }
inline std::size_t hash( T3 const & ) { return 0; }
inline std::size_t hash( T4 const & ) { return 0; }
inline std::size_t hash( T5 const & ) { return 0; }
inline std::size_t hash( T6 const & ) { return 0; }
inline std::size_t hash( T7 const & ) { return 0; }
inline std::size_t hash( T8 const & ) { return 0; }
inline std::size_t hash( T9 const & ) { return 0; }
inline std::size_t hash( T10 const & ) { return 0; }
inline std::size_t hash( T11 const & ) { return 0; }
inline std::size_t hash( T12 const & ) { return 0; }
inline std::size_t hash( T13 const & ) { return 0; }
inline std::size_t hash( T14 const & ) { return 0; }
inline std::size_t hash( T15 const & ) { return 0; }
#endif // variant_CPP11_OR_GREATER
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
struct helper
{
typedef signed char type_index_t;
typedef variant_TL16( T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 ) variant_types;
template< class U >
static U * as( void * data )
{
return reinterpret_cast<U*>( data );
}
template< class U >
static U const * as( void const * data )
{
return reinterpret_cast<const U*>( data );
}
static type_index_t to_index_t( std::size_t index )
{
return static_cast< type_index_t >( index );
}
static void destroy( type_index_t index, void * data )
{
switch ( index )
{
case 0: as<T0>( data )->~T0(); break;
case 1: as<T1>( data )->~T1(); break;
case 2: as<T2>( data )->~T2(); break;
case 3: as<T3>( data )->~T3(); break;
case 4: as<T4>( data )->~T4(); break;
case 5: as<T5>( data )->~T5(); break;
case 6: as<T6>( data )->~T6(); break;
case 7: as<T7>( data )->~T7(); break;
case 8: as<T8>( data )->~T8(); break;
case 9: as<T9>( data )->~T9(); break;
case 10: as<T10>( data )->~T10(); break;
case 11: as<T11>( data )->~T11(); break;
case 12: as<T12>( data )->~T12(); break;
case 13: as<T13>( data )->~T13(); break;
case 14: as<T14>( data )->~T14(); break;
case 15: as<T15>( data )->~T15(); break;
}
}
#if variant_CPP11_OR_GREATER
template< class T, class... Args >
static type_index_t construct_t( void * data, Args&&... args )
{
new( data ) T( std::forward<Args>(args)... );
return to_index_t( detail::typelist_index_of< variant_types, T>::value );
}
template< std::size_t K, class... Args >
static type_index_t construct_i( void * data, Args&&... args )
{
using type = typename detail::typelist_type_at< variant_types, K >::type;
construct_t< type >( data, std::forward<Args>(args)... );
return to_index_t( K );
}
static type_index_t move_construct( type_index_t const from_index, void * from_value, void * to_value )
{
switch ( from_index )
{
case 0: new( to_value ) T0( std::move( *as<T0>( from_value ) ) ); break;
case 1: new( to_value ) T1( std::move( *as<T1>( from_value ) ) ); break;
case 2: new( to_value ) T2( std::move( *as<T2>( from_value ) ) ); break;
case 3: new( to_value ) T3( std::move( *as<T3>( from_value ) ) ); break;
case 4: new( to_value ) T4( std::move( *as<T4>( from_value ) ) ); break;
case 5: new( to_value ) T5( std::move( *as<T5>( from_value ) ) ); break;
case 6: new( to_value ) T6( std::move( *as<T6>( from_value ) ) ); break;
case 7: new( to_value ) T7( std::move( *as<T7>( from_value ) ) ); break;
case 8: new( to_value ) T8( std::move( *as<T8>( from_value ) ) ); break;
case 9: new( to_value ) T9( std::move( *as<T9>( from_value ) ) ); break;
case 10: new( to_value ) T10( std::move( *as<T10>( from_value ) ) ); break;
case 11: new( to_value ) T11( std::move( *as<T11>( from_value ) ) ); break;
case 12: new( to_value ) T12( std::move( *as<T12>( from_value ) ) ); break;
case 13: new( to_value ) T13( std::move( *as<T13>( from_value ) ) ); break;
case 14: new( to_value ) T14( std::move( *as<T14>( from_value ) ) ); break;
case 15: new( to_value ) T15( std::move( *as<T15>( from_value ) ) ); break;
}
return from_index;
}
static type_index_t move_assign( type_index_t const from_index, void * from_value, void * to_value )
{
switch ( from_index )
{
case 0: *as<T0>( to_value ) = std::move( *as<T0>( from_value ) ); break;
case 1: *as<T1>( to_value ) = std::move( *as<T1>( from_value ) ); break;
case 2: *as<T2>( to_value ) = std::move( *as<T2>( from_value ) ); break;
case 3: *as<T3>( to_value ) = std::move( *as<T3>( from_value ) ); break;
case 4: *as<T4>( to_value ) = std::move( *as<T4>( from_value ) ); break;
case 5: *as<T5>( to_value ) = std::move( *as<T5>( from_value ) ); break;
case 6: *as<T6>( to_value ) = std::move( *as<T6>( from_value ) ); break;
case 7: *as<T7>( to_value ) = std::move( *as<T7>( from_value ) ); break;
case 8: *as<T8>( to_value ) = std::move( *as<T8>( from_value ) ); break;
case 9: *as<T9>( to_value ) = std::move( *as<T9>( from_value ) ); break;
case 10: *as<T10>( to_value ) = std::move( *as<T10>( from_value ) ); break;
case 11: *as<T11>( to_value ) = std::move( *as<T11>( from_value ) ); break;
case 12: *as<T12>( to_value ) = std::move( *as<T12>( from_value ) ); break;
case 13: *as<T13>( to_value ) = std::move( *as<T13>( from_value ) ); break;
case 14: *as<T14>( to_value ) = std::move( *as<T14>( from_value ) ); break;
case 15: *as<T15>( to_value ) = std::move( *as<T15>( from_value ) ); break;
}
return from_index;
}
#endif
static type_index_t copy_construct( type_index_t const from_index, const void * from_value, void * to_value )
{
switch ( from_index )
{
case 0: new( to_value ) T0( *as<T0>( from_value ) ); break;
case 1: new( to_value ) T1( *as<T1>( from_value ) ); break;
case 2: new( to_value ) T2( *as<T2>( from_value ) ); break;
case 3: new( to_value ) T3( *as<T3>( from_value ) ); break;
case 4: new( to_value ) T4( *as<T4>( from_value ) ); break;
case 5: new( to_value ) T5( *as<T5>( from_value ) ); break;
case 6: new( to_value ) T6( *as<T6>( from_value ) ); break;
case 7: new( to_value ) T7( *as<T7>( from_value ) ); break;
case 8: new( to_value ) T8( *as<T8>( from_value ) ); break;
case 9: new( to_value ) T9( *as<T9>( from_value ) ); break;
case 10: new( to_value ) T10( *as<T10>( from_value ) ); break;
case 11: new( to_value ) T11( *as<T11>( from_value ) ); break;
case 12: new( to_value ) T12( *as<T12>( from_value ) ); break;
case 13: new( to_value ) T13( *as<T13>( from_value ) ); break;
case 14: new( to_value ) T14( *as<T14>( from_value ) ); break;
case 15: new( to_value ) T15( *as<T15>( from_value ) ); break;
}
return from_index;
}
static type_index_t copy_assign( type_index_t const from_index, const void * from_value, void * to_value )
{
switch ( from_index )
{
case 0: *as<T0>( to_value ) = *as<T0>( from_value ); break;
case 1: *as<T1>( to_value ) = *as<T1>( from_value ); break;
case 2: *as<T2>( to_value ) = *as<T2>( from_value ); break;
case 3: *as<T3>( to_value ) = *as<T3>( from_value ); break;
case 4: *as<T4>( to_value ) = *as<T4>( from_value ); break;
case 5: *as<T5>( to_value ) = *as<T5>( from_value ); break;
case 6: *as<T6>( to_value ) = *as<T6>( from_value ); break;
case 7: *as<T7>( to_value ) = *as<T7>( from_value ); break;
case 8: *as<T8>( to_value ) = *as<T8>( from_value ); break;
case 9: *as<T9>( to_value ) = *as<T9>( from_value ); break;
case 10: *as<T10>( to_value ) = *as<T10>( from_value ); break;
case 11: *as<T11>( to_value ) = *as<T11>( from_value ); break;
case 12: *as<T12>( to_value ) = *as<T12>( from_value ); break;
case 13: *as<T13>( to_value ) = *as<T13>( from_value ); break;
case 14: *as<T14>( to_value ) = *as<T14>( from_value ); break;
case 15: *as<T15>( to_value ) = *as<T15>( from_value ); break;
}
return from_index;
}
};
} // namespace detail
//
// Variant:
//
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
class variant;
// 19.7.8 Class monostate
class monostate{};
// 19.7.9 monostate relational operators
inline variant_constexpr bool operator< ( monostate, monostate ) variant_noexcept { return false; }
inline variant_constexpr bool operator> ( monostate, monostate ) variant_noexcept { return false; }
inline variant_constexpr bool operator<=( monostate, monostate ) variant_noexcept { return true; }
inline variant_constexpr bool operator>=( monostate, monostate ) variant_noexcept { return true; }
inline variant_constexpr bool operator==( monostate, monostate ) variant_noexcept { return true; }
inline variant_constexpr bool operator!=( monostate, monostate ) variant_noexcept { return false; }
// 19.7.4 variant helper classes
// obtain the size of the variant's list of alternatives at compile time
template< class T >
struct variant_size; /* undefined */
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
struct variant_size< variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >
{
enum _ { value = detail::typelist_size< variant_TL16(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) >::value };
};
#if variant_CPP14_OR_GREATER
template< class T >
constexpr std::size_t variant_size_v = variant_size<T>::value;
#endif
#if ! variant_CONFIG_OMIT_VARIANT_SIZE_V_MACRO
# define variant_size_V(T) nonstd::variant_size<T>::value
#endif
// obtain the type of the alternative specified by its index, at compile time:
template< std::size_t K, class T >
struct variant_alternative; /* undefined */
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
struct variant_alternative< K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >
{
typedef typename detail::typelist_type_at<variant_TL16(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15), K>::type type;
};
#if variant_CPP11_OR_GREATER
template< std::size_t K, class T >
using variant_alternative_t = typename variant_alternative<K, T>::type;
#endif
#if ! variant_CONFIG_OMIT_VARIANT_ALTERNATIVE_T_MACRO
# define variant_alternative_T(K,T) typename nonstd::variant_alternative<K,T >::type
#endif
// NTS:implement specializes the std::uses_allocator type trait
// std::uses_allocator<nonstd::variant>
// index of the variant in the invalid state (constant)
#if variant_CPP11_OR_GREATER
variant_constexpr std::size_t variant_npos = static_cast<std::size_t>( -1 );
#else
static const std::size_t variant_npos = static_cast<std::size_t>( -1 );
#endif
#if ! variant_CONFIG_NO_EXCEPTIONS
// 19.7.11 Class bad_variant_access
class bad_variant_access : public std::exception
{
public:
#if variant_CPP11_OR_GREATER
virtual const char* what() const variant_noexcept variant_override
#else
virtual const char* what() const throw()
#endif
{
return "bad variant access";
}
};
#endif // variant_CONFIG_NO_EXCEPTIONS
// 19.7.3 Class template variant
template<
class T0,
class T1 = detail::T1,
class T2 = detail::T2,
class T3 = detail::T3,
class T4 = detail::T4,
class T5 = detail::T5,
class T6 = detail::T6,
class T7 = detail::T7,
class T8 = detail::T8,
class T9 = detail::T9,
class T10 = detail::T10,
class T11 = detail::T11,
class T12 = detail::T12,
class T13 = detail::T13,
class T14 = detail::T14,
class T15 = detail::T15
>
class variant
{
typedef detail::helper< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > helper_type;
typedef variant_TL16( T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 ) variant_types;
public:
// 19.7.3.1 Constructors
variant() : type_index( 0 ) { new( ptr() ) T0(); }
#if variant_CPP11_OR_GREATER
template < variant_index_tag_t( 0 ) = variant_index_tag( 0 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 0 >::value) >
variant( T0 const & t0 ) : type_index( 0 ) { new( ptr() ) T0( t0 ); }
template < variant_index_tag_t( 1 ) = variant_index_tag( 1 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 1 >::value) >
variant( T1 const & t1 ) : type_index( 1 ) { new( ptr() ) T1( t1 ); }
template < variant_index_tag_t( 2 ) = variant_index_tag( 2 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 2 >::value) >
variant( T2 const & t2 ) : type_index( 2 ) { new( ptr() ) T2( t2 ); }
template < variant_index_tag_t( 3 ) = variant_index_tag( 3 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 3 >::value) >
variant( T3 const & t3 ) : type_index( 3 ) { new( ptr() ) T3( t3 ); }
template < variant_index_tag_t( 4 ) = variant_index_tag( 4 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 4 >::value) >
variant( T4 const & t4 ) : type_index( 4 ) { new( ptr() ) T4( t4 ); }
template < variant_index_tag_t( 5 ) = variant_index_tag( 5 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 5 >::value) >
variant( T5 const & t5 ) : type_index( 5 ) { new( ptr() ) T5( t5 ); }
template < variant_index_tag_t( 6 ) = variant_index_tag( 6 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 6 >::value) >
variant( T6 const & t6 ) : type_index( 6 ) { new( ptr() ) T6( t6 ); }
template < variant_index_tag_t( 7 ) = variant_index_tag( 7 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 7 >::value) >
variant( T7 const & t7 ) : type_index( 7 ) { new( ptr() ) T7( t7 ); }
template < variant_index_tag_t( 8 ) = variant_index_tag( 8 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 8 >::value) >
variant( T8 const & t8 ) : type_index( 8 ) { new( ptr() ) T8( t8 ); }
template < variant_index_tag_t( 9 ) = variant_index_tag( 9 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 9 >::value) >
variant( T9 const & t9 ) : type_index( 9 ) { new( ptr() ) T9( t9 ); }
template < variant_index_tag_t( 10 ) = variant_index_tag( 10 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 10 >::value) >
variant( T10 const & t10 ) : type_index( 10 ) { new( ptr() ) T10( t10 ); }
template < variant_index_tag_t( 11 ) = variant_index_tag( 11 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 11 >::value) >
variant( T11 const & t11 ) : type_index( 11 ) { new( ptr() ) T11( t11 ); }
template < variant_index_tag_t( 12 ) = variant_index_tag( 12 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 12 >::value) >
variant( T12 const & t12 ) : type_index( 12 ) { new( ptr() ) T12( t12 ); }
template < variant_index_tag_t( 13 ) = variant_index_tag( 13 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 13 >::value) >
variant( T13 const & t13 ) : type_index( 13 ) { new( ptr() ) T13( t13 ); }
template < variant_index_tag_t( 14 ) = variant_index_tag( 14 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 14 >::value) >
variant( T14 const & t14 ) : type_index( 14 ) { new( ptr() ) T14( t14 ); }
template < variant_index_tag_t( 15 ) = variant_index_tag( 15 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 15 >::value) >
variant( T15 const & t15 ) : type_index( 15 ) { new( ptr() ) T15( t15 ); }
#else
variant( T0 const & t0 ) : type_index( 0 ) { new( ptr() ) T0( t0 ); }
variant( T1 const & t1 ) : type_index( 1 ) { new( ptr() ) T1( t1 ); }
variant( T2 const & t2 ) : type_index( 2 ) { new( ptr() ) T2( t2 ); }
variant( T3 const & t3 ) : type_index( 3 ) { new( ptr() ) T3( t3 ); }
variant( T4 const & t4 ) : type_index( 4 ) { new( ptr() ) T4( t4 ); }
variant( T5 const & t5 ) : type_index( 5 ) { new( ptr() ) T5( t5 ); }
variant( T6 const & t6 ) : type_index( 6 ) { new( ptr() ) T6( t6 ); }
variant( T7 const & t7 ) : type_index( 7 ) { new( ptr() ) T7( t7 ); }
variant( T8 const & t8 ) : type_index( 8 ) { new( ptr() ) T8( t8 ); }
variant( T9 const & t9 ) : type_index( 9 ) { new( ptr() ) T9( t9 ); }
variant( T10 const & t10 ) : type_index( 10 ) { new( ptr() ) T10( t10 ); }
variant( T11 const & t11 ) : type_index( 11 ) { new( ptr() ) T11( t11 ); }
variant( T12 const & t12 ) : type_index( 12 ) { new( ptr() ) T12( t12 ); }
variant( T13 const & t13 ) : type_index( 13 ) { new( ptr() ) T13( t13 ); }
variant( T14 const & t14 ) : type_index( 14 ) { new( ptr() ) T14( t14 ); }
variant( T15 const & t15 ) : type_index( 15 ) { new( ptr() ) T15( t15 ); }
#endif
#if variant_CPP11_OR_GREATER
template < variant_index_tag_t( 0 ) = variant_index_tag( 0 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 0 >::value) >
variant( T0 && t0 )
: type_index( 0 ) { new( ptr() ) T0( std::move(t0) ); }
template < variant_index_tag_t( 1 ) = variant_index_tag( 1 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 1 >::value) >
variant( T1 && t1 )
: type_index( 1 ) { new( ptr() ) T1( std::move(t1) ); }
template < variant_index_tag_t( 2 ) = variant_index_tag( 2 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 2 >::value) >
variant( T2 && t2 )
: type_index( 2 ) { new( ptr() ) T2( std::move(t2) ); }
template < variant_index_tag_t( 3 ) = variant_index_tag( 3 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 3 >::value) >
variant( T3 && t3 )
: type_index( 3 ) { new( ptr() ) T3( std::move(t3) ); }
template < variant_index_tag_t( 4 ) = variant_index_tag( 4 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 4 >::value) >
variant( T4 && t4 )
: type_index( 4 ) { new( ptr() ) T4( std::move(t4) ); }
template < variant_index_tag_t( 5 ) = variant_index_tag( 5 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 5 >::value) >
variant( T5 && t5 )
: type_index( 5 ) { new( ptr() ) T5( std::move(t5) ); }
template < variant_index_tag_t( 6 ) = variant_index_tag( 6 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 6 >::value) >
variant( T6 && t6 )
: type_index( 6 ) { new( ptr() ) T6( std::move(t6) ); }
template < variant_index_tag_t( 7 ) = variant_index_tag( 7 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 7 >::value) >
variant( T7 && t7 )
: type_index( 7 ) { new( ptr() ) T7( std::move(t7) ); }
template < variant_index_tag_t( 8 ) = variant_index_tag( 8 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 8 >::value) >
variant( T8 && t8 )
: type_index( 8 ) { new( ptr() ) T8( std::move(t8) ); }
template < variant_index_tag_t( 9 ) = variant_index_tag( 9 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 9 >::value) >
variant( T9 && t9 )
: type_index( 9 ) { new( ptr() ) T9( std::move(t9) ); }
template < variant_index_tag_t( 10 ) = variant_index_tag( 10 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 10 >::value) >
variant( T10 && t10 )
: type_index( 10 ) { new( ptr() ) T10( std::move(t10) ); }
template < variant_index_tag_t( 11 ) = variant_index_tag( 11 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 11 >::value) >
variant( T11 && t11 )
: type_index( 11 ) { new( ptr() ) T11( std::move(t11) ); }
template < variant_index_tag_t( 12 ) = variant_index_tag( 12 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 12 >::value) >
variant( T12 && t12 )
: type_index( 12 ) { new( ptr() ) T12( std::move(t12) ); }
template < variant_index_tag_t( 13 ) = variant_index_tag( 13 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 13 >::value) >
variant( T13 && t13 )
: type_index( 13 ) { new( ptr() ) T13( std::move(t13) ); }
template < variant_index_tag_t( 14 ) = variant_index_tag( 14 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 14 >::value) >
variant( T14 && t14 )
: type_index( 14 ) { new( ptr() ) T14( std::move(t14) ); }
template < variant_index_tag_t( 15 ) = variant_index_tag( 15 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 15 >::value) >
variant( T15 && t15 )
: type_index( 15 ) { new( ptr() ) T15( std::move(t15) ); }
#endif
variant(variant const & other)
: type_index( other.type_index )
{
(void) helper_type::copy_construct( other.type_index, other.ptr(), ptr() );
}
#if variant_CPP11_OR_GREATER
variant( variant && other ) noexcept(
std::is_nothrow_move_constructible<T0>::value &&
std::is_nothrow_move_constructible<T1>::value &&
std::is_nothrow_move_constructible<T2>::value &&
std::is_nothrow_move_constructible<T3>::value &&
std::is_nothrow_move_constructible<T4>::value &&
std::is_nothrow_move_constructible<T5>::value &&
std::is_nothrow_move_constructible<T6>::value &&
std::is_nothrow_move_constructible<T7>::value &&
std::is_nothrow_move_constructible<T8>::value &&
std::is_nothrow_move_constructible<T9>::value &&
std::is_nothrow_move_constructible<T10>::value &&
std::is_nothrow_move_constructible<T11>::value &&
std::is_nothrow_move_constructible<T12>::value &&
std::is_nothrow_move_constructible<T13>::value &&
std::is_nothrow_move_constructible<T14>::value &&
std::is_nothrow_move_constructible<T15>::value)
: type_index( other.type_index )
{
(void) helper_type::move_construct( other.type_index, other.ptr(), ptr() );
}
template< std::size_t K >
using type_at_t = typename detail::typelist_type_at< variant_types, K >::type;
template< class T, class... Args
variant_REQUIRES_T( std::is_constructible< T, Args...>::value )
>
explicit variant( nonstd_lite_in_place_type_t(T), Args&&... args)
{
type_index = variant_npos_internal();
type_index = helper_type::template construct_t<T>( ptr(), std::forward<Args>(args)... );
}
template< class T, class U, class... Args
variant_REQUIRES_T( std::is_constructible< T, std::initializer_list<U>&, Args...>::value )
>
explicit variant( nonstd_lite_in_place_type_t(T), std::initializer_list<U> il, Args&&... args )
{
type_index = variant_npos_internal();
type_index = helper_type::template construct_t<T>( ptr(), il, std::forward<Args>(args)... );
}
template< std::size_t K, class... Args
variant_REQUIRES_T( std::is_constructible< type_at_t<K>, Args...>::value )
>
explicit variant( nonstd_lite_in_place_index_t(K), Args&&... args )
{
type_index = variant_npos_internal();
type_index = helper_type::template construct_i<K>( ptr(), std::forward<Args>(args)... );
}
template< size_t K, class U, class... Args
variant_REQUIRES_T( std::is_constructible< type_at_t<K>, std::initializer_list<U>&, Args...>::value )
>
explicit variant( nonstd_lite_in_place_index_t(K), std::initializer_list<U> il, Args&&... args )
{
type_index = variant_npos_internal();
type_index = helper_type::template construct_i<K>( ptr(), il, std::forward<Args>(args)... );
}
#endif // variant_CPP11_OR_GREATER
// 19.7.3.2 Destructor
~variant()
{
if ( ! valueless_by_exception() )
{
helper_type::destroy( type_index, ptr() );
}
}
// 19.7.3.3 Assignment
variant & operator=( variant const & other )
{
return copy_assign( other );
}
#if variant_CPP11_OR_GREATER
variant & operator=( variant && other ) noexcept(
std::is_nothrow_move_assignable<T0>::value &&
std::is_nothrow_move_assignable<T1>::value &&
std::is_nothrow_move_assignable<T2>::value &&
std::is_nothrow_move_assignable<T3>::value &&
std::is_nothrow_move_assignable<T4>::value &&
std::is_nothrow_move_assignable<T5>::value &&
std::is_nothrow_move_assignable<T6>::value &&
std::is_nothrow_move_assignable<T7>::value &&
std::is_nothrow_move_assignable<T8>::value &&
std::is_nothrow_move_assignable<T9>::value &&
std::is_nothrow_move_assignable<T10>::value &&
std::is_nothrow_move_assignable<T11>::value &&
std::is_nothrow_move_assignable<T12>::value &&
std::is_nothrow_move_assignable<T13>::value &&
std::is_nothrow_move_assignable<T14>::value &&
std::is_nothrow_move_assignable<T15>::value)
{
return move_assign( std::move( other ) );
}
template < variant_index_tag_t( 0 ) = variant_index_tag( 0 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 0 >::value) >
variant & operator=( T0 && t0 ) { return assign_value<0>( std::move( t0 ) ); }
template < variant_index_tag_t( 1 ) = variant_index_tag( 1 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 1 >::value) >
variant & operator=( T1 && t1 ) { return assign_value<1>( std::move( t1 ) ); }
template < variant_index_tag_t( 2 ) = variant_index_tag( 2 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 2 >::value) >
variant & operator=( T2 && t2 ) { return assign_value<2>( std::move( t2 ) ); }
template < variant_index_tag_t( 3 ) = variant_index_tag( 3 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 3 >::value) >
variant & operator=( T3 && t3 ) { return assign_value<3>( std::move( t3 ) ); }
template < variant_index_tag_t( 4 ) = variant_index_tag( 4 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 4 >::value) >
variant & operator=( T4 && t4 ) { return assign_value<4>( std::move( t4 ) ); }
template < variant_index_tag_t( 5 ) = variant_index_tag( 5 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 5 >::value) >
variant & operator=( T5 && t5 ) { return assign_value<5>( std::move( t5 ) ); }
template < variant_index_tag_t( 6 ) = variant_index_tag( 6 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 6 >::value) >
variant & operator=( T6 && t6 ) { return assign_value<6>( std::move( t6 ) ); }
template < variant_index_tag_t( 7 ) = variant_index_tag( 7 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 7 >::value) >
variant & operator=( T7 && t7 ) { return assign_value<7>( std::move( t7 ) ); }
template < variant_index_tag_t( 8 ) = variant_index_tag( 8 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 8 >::value) >
variant & operator=( T8 && t8 ) { return assign_value<8>( std::move( t8 ) ); }
template < variant_index_tag_t( 9 ) = variant_index_tag( 9 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 9 >::value) >
variant & operator=( T9 && t9 ) { return assign_value<9>( std::move( t9 ) ); }
template < variant_index_tag_t( 10 ) = variant_index_tag( 10 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 10 >::value) >
variant & operator=( T10 && t10 ) { return assign_value<10>( std::move( t10 ) ); }
template < variant_index_tag_t( 11 ) = variant_index_tag( 11 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 11 >::value) >
variant & operator=( T11 && t11 ) { return assign_value<11>( std::move( t11 ) ); }
template < variant_index_tag_t( 12 ) = variant_index_tag( 12 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 12 >::value) >
variant & operator=( T12 && t12 ) { return assign_value<12>( std::move( t12 ) ); }
template < variant_index_tag_t( 13 ) = variant_index_tag( 13 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 13 >::value) >
variant & operator=( T13 && t13 ) { return assign_value<13>( std::move( t13 ) ); }
template < variant_index_tag_t( 14 ) = variant_index_tag( 14 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 14 >::value) >
variant & operator=( T14 && t14 ) { return assign_value<14>( std::move( t14 ) ); }
template < variant_index_tag_t( 15 ) = variant_index_tag( 15 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 15 >::value) >
variant & operator=( T15 && t15 ) { return assign_value<15>( std::move( t15 ) ); }
#endif
#if variant_CPP11_OR_GREATER
template < variant_index_tag_t( 0 ) = variant_index_tag( 0 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 0 >::value) >
variant & operator=( T0 const & t0 ) { return assign_value<0>( t0 ); }
template < variant_index_tag_t( 1 ) = variant_index_tag( 1 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 1 >::value) >
variant & operator=( T1 const & t1 ) { return assign_value<1>( t1 ); }
template < variant_index_tag_t( 2 ) = variant_index_tag( 2 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 2 >::value) >
variant & operator=( T2 const & t2 ) { return assign_value<2>( t2 ); }
template < variant_index_tag_t( 3 ) = variant_index_tag( 3 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 3 >::value) >
variant & operator=( T3 const & t3 ) { return assign_value<3>( t3 ); }
template < variant_index_tag_t( 4 ) = variant_index_tag( 4 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 4 >::value) >
variant & operator=( T4 const & t4 ) { return assign_value<4>( t4 ); }
template < variant_index_tag_t( 5 ) = variant_index_tag( 5 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 5 >::value) >
variant & operator=( T5 const & t5 ) { return assign_value<5>( t5 ); }
template < variant_index_tag_t( 6 ) = variant_index_tag( 6 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 6 >::value) >
variant & operator=( T6 const & t6 ) { return assign_value<6>( t6 ); }
template < variant_index_tag_t( 7 ) = variant_index_tag( 7 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 7 >::value) >
variant & operator=( T7 const & t7 ) { return assign_value<7>( t7 ); }
template < variant_index_tag_t( 8 ) = variant_index_tag( 8 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 8 >::value) >
variant & operator=( T8 const & t8 ) { return assign_value<8>( t8 ); }
template < variant_index_tag_t( 9 ) = variant_index_tag( 9 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 9 >::value) >
variant & operator=( T9 const & t9 ) { return assign_value<9>( t9 ); }
template < variant_index_tag_t( 10 ) = variant_index_tag( 10 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 10 >::value) >
variant & operator=( T10 const & t10 ) { return assign_value<10>( t10 ); }
template < variant_index_tag_t( 11 ) = variant_index_tag( 11 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 11 >::value) >
variant & operator=( T11 const & t11 ) { return assign_value<11>( t11 ); }
template < variant_index_tag_t( 12 ) = variant_index_tag( 12 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 12 >::value) >
variant & operator=( T12 const & t12 ) { return assign_value<12>( t12 ); }
template < variant_index_tag_t( 13 ) = variant_index_tag( 13 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 13 >::value) >
variant & operator=( T13 const & t13 ) { return assign_value<13>( t13 ); }
template < variant_index_tag_t( 14 ) = variant_index_tag( 14 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 14 >::value) >
variant & operator=( T14 const & t14 ) { return assign_value<14>( t14 ); }
template < variant_index_tag_t( 15 ) = variant_index_tag( 15 )
variant_REQUIRES_B(detail::typelist_type_is_unique< variant_types, 15 >::value) >
variant & operator=( T15 const & t15 ) { return assign_value<15>( t15 ); }
#else
variant & operator=( T0 const & t0 ) { return assign_value<0>( t0 ); }
variant & operator=( T1 const & t1 ) { return assign_value<1>( t1 ); }
variant & operator=( T2 const & t2 ) { return assign_value<2>( t2 ); }
variant & operator=( T3 const & t3 ) { return assign_value<3>( t3 ); }
variant & operator=( T4 const & t4 ) { return assign_value<4>( t4 ); }
variant & operator=( T5 const & t5 ) { return assign_value<5>( t5 ); }
variant & operator=( T6 const & t6 ) { return assign_value<6>( t6 ); }
variant & operator=( T7 const & t7 ) { return assign_value<7>( t7 ); }
variant & operator=( T8 const & t8 ) { return assign_value<8>( t8 ); }
variant & operator=( T9 const & t9 ) { return assign_value<9>( t9 ); }
variant & operator=( T10 const & t10 ) { return assign_value<10>( t10 ); }
variant & operator=( T11 const & t11 ) { return assign_value<11>( t11 ); }
variant & operator=( T12 const & t12 ) { return assign_value<12>( t12 ); }
variant & operator=( T13 const & t13 ) { return assign_value<13>( t13 ); }
variant & operator=( T14 const & t14 ) { return assign_value<14>( t14 ); }
variant & operator=( T15 const & t15 ) { return assign_value<15>( t15 ); }
#endif
std::size_t index() const
{
return variant_npos_internal() == type_index ? variant_npos : static_cast<std::size_t>( type_index );
}
// 19.7.3.4 Modifiers
#if variant_CPP11_OR_GREATER
template< class T, class... Args
variant_REQUIRES_T( std::is_constructible< T, Args...>::value )
variant_REQUIRES_T( detail::typelist_contains_unique_type< variant_types, T >::value )
>
T& emplace( Args&&... args )
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
type_index = helper_type::template construct_t<T>( ptr(), std::forward<Args>(args)... );
return *as<T>();
}
template< class T, class U, class... Args
variant_REQUIRES_T( std::is_constructible< T, std::initializer_list<U>&, Args...>::value )
variant_REQUIRES_T( detail::typelist_contains_unique_type< variant_types, T >::value )
>
T& emplace( std::initializer_list<U> il, Args&&... args )
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
type_index = helper_type::template construct_t<T>( ptr(), il, std::forward<Args>(args)... );
return *as<T>();
}
template< size_t K, class... Args
variant_REQUIRES_T( std::is_constructible< type_at_t<K>, Args...>::value )
>
variant_alternative_t<K, variant> & emplace( Args&&... args )
{
return this->template emplace< type_at_t<K> >( std::forward<Args>(args)... );
}
template< size_t K, class U, class... Args
variant_REQUIRES_T( std::is_constructible< type_at_t<K>, std::initializer_list<U>&, Args...>::value )
>
variant_alternative_t<K, variant> & emplace( std::initializer_list<U> il, Args&&... args )
{
return this->template emplace< type_at_t<K> >( il, std::forward<Args>(args)... );
}
#endif // variant_CPP11_OR_GREATER
// 19.7.3.5 Value status
bool valueless_by_exception() const
{
return type_index == variant_npos_internal();
}
// 19.7.3.6 Swap
void swap( variant & other )
#if variant_CPP11_OR_GREATER
noexcept(
std::is_nothrow_move_constructible<T0>::value && std17::is_nothrow_swappable<T0>::value &&
std::is_nothrow_move_constructible<T1>::value && std17::is_nothrow_swappable<T1>::value &&
std::is_nothrow_move_constructible<T2>::value && std17::is_nothrow_swappable<T2>::value &&
std::is_nothrow_move_constructible<T3>::value && std17::is_nothrow_swappable<T3>::value &&
std::is_nothrow_move_constructible<T4>::value && std17::is_nothrow_swappable<T4>::value &&
std::is_nothrow_move_constructible<T5>::value && std17::is_nothrow_swappable<T5>::value &&
std::is_nothrow_move_constructible<T6>::value && std17::is_nothrow_swappable<T6>::value &&
std::is_nothrow_move_constructible<T7>::value && std17::is_nothrow_swappable<T7>::value &&
std::is_nothrow_move_constructible<T8>::value && std17::is_nothrow_swappable<T8>::value &&
std::is_nothrow_move_constructible<T9>::value && std17::is_nothrow_swappable<T9>::value &&
std::is_nothrow_move_constructible<T10>::value && std17::is_nothrow_swappable<T10>::value &&
std::is_nothrow_move_constructible<T11>::value && std17::is_nothrow_swappable<T11>::value &&
std::is_nothrow_move_constructible<T12>::value && std17::is_nothrow_swappable<T12>::value &&
std::is_nothrow_move_constructible<T13>::value && std17::is_nothrow_swappable<T13>::value &&
std::is_nothrow_move_constructible<T14>::value && std17::is_nothrow_swappable<T14>::value &&
std::is_nothrow_move_constructible<T15>::value && std17::is_nothrow_swappable<T15>::value
)
#endif
{
if ( valueless_by_exception() && other.valueless_by_exception() )
{
// no effect
}
else if ( type_index == other.type_index )
{
this->swap_value( type_index, other );
}
else
{
#if variant_CPP11_OR_GREATER
variant tmp( std::move( *this ) );
*this = std::move( other );
other = std::move( tmp );
#else
variant tmp( *this );
*this = other;
other = tmp;
#endif
}
}
//
// non-standard:
//
template< class T >
static variant_constexpr std::size_t index_of() variant_noexcept
{
return to_size_t( detail::typelist_index_of<variant_types, typename std11::remove_cv<T>::type >::value );
}
template< class T >
T & get()
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( index_of<T>() == index() );
#else
if ( index_of<T>() != index() )
{
throw bad_variant_access();
}
#endif
return *as<T>();
}
template< class T >
T const & get() const
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( index_of<T>() == index() );
#else
if ( index_of<T>() != index() )
{
throw bad_variant_access();
}
#endif
return *as<const T>();
}
template< std::size_t K >
typename variant_alternative< K, variant >::type &
get()
{
return this->template get< typename detail::typelist_type_at< variant_types, K >::type >();
}
template< std::size_t K >
typename variant_alternative< K, variant >::type const &
get() const
{
return this->template get< typename detail::typelist_type_at< variant_types, K >::type >();
}
private:
typedef typename helper_type::type_index_t type_index_t;
void * ptr() variant_noexcept
{
return &data;
}
void const * ptr() const variant_noexcept
{
return &data;
}
template< class U >
U * as()
{
return reinterpret_cast<U*>( ptr() );
}
template< class U >
U const * as() const
{
return reinterpret_cast<U const *>( ptr() );
}
template< class U >
static variant_constexpr std::size_t to_size_t( U index )
{
return static_cast<std::size_t>( index );
}
variant_constexpr type_index_t variant_npos_internal() const variant_noexcept
{
return static_cast< type_index_t >( -1 );
}
variant & copy_assign( variant const & other )
{
if ( valueless_by_exception() && other.valueless_by_exception() )
{
// no effect
}
else if ( ! valueless_by_exception() && other.valueless_by_exception() )
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
}
else if ( index() == other.index() )
{
type_index = helper_type::copy_assign( other.type_index, other.ptr(), ptr() );
}
else
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
type_index = helper_type::copy_construct( other.type_index, other.ptr(), ptr() );
}
return *this;
}
#if variant_CPP11_OR_GREATER
variant & move_assign( variant && other )
{
if ( valueless_by_exception() && other.valueless_by_exception() )
{
// no effect
}
else if ( ! valueless_by_exception() && other.valueless_by_exception() )
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
}
else if ( index() == other.index() )
{
type_index = helper_type::move_assign( other.type_index, other.ptr(), ptr() );
}
else
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
type_index = helper_type::move_construct( other.type_index, other.ptr(), ptr() );
}
return *this;
}
template< std::size_t K, class T >
variant & assign_value( T && value )
{
if( index() == K )
{
*as<T>() = std::forward<T>( value );
}
else
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
new( ptr() ) T( std::forward<T>( value ) );
type_index = K;
}
return *this;
}
#endif // variant_CPP11_OR_GREATER
template< std::size_t K, class T >
variant & assign_value( T const & value )
{
if( index() == K )
{
*as<T>() = value;
}
else
{
helper_type::destroy( type_index, ptr() );
type_index = variant_npos_internal();
new( ptr() ) T( value );
type_index = K;
}
return *this;
}
void swap_value( type_index_t index, variant & other )
{
using std::swap;
switch( index )
{
case 0: swap( this->get<0>(), other.get<0>() ); break;
case 1: swap( this->get<1>(), other.get<1>() ); break;
case 2: swap( this->get<2>(), other.get<2>() ); break;
case 3: swap( this->get<3>(), other.get<3>() ); break;
case 4: swap( this->get<4>(), other.get<4>() ); break;
case 5: swap( this->get<5>(), other.get<5>() ); break;
case 6: swap( this->get<6>(), other.get<6>() ); break;
case 7: swap( this->get<7>(), other.get<7>() ); break;
case 8: swap( this->get<8>(), other.get<8>() ); break;
case 9: swap( this->get<9>(), other.get<9>() ); break;
case 10: swap( this->get<10>(), other.get<10>() ); break;
case 11: swap( this->get<11>(), other.get<11>() ); break;
case 12: swap( this->get<12>(), other.get<12>() ); break;
case 13: swap( this->get<13>(), other.get<13>() ); break;
case 14: swap( this->get<14>(), other.get<14>() ); break;
case 15: swap( this->get<15>(), other.get<15>() ); break;
}
}
private:
enum { data_size = detail::typelist_max< variant_types >::value };
#if variant_CPP11_OR_GREATER
enum { data_align = detail::typelist_max_alignof< variant_types >::value };
using aligned_storage_t = typename std::aligned_storage< data_size, data_align >::type;
aligned_storage_t data;
#elif variant_CONFIG_MAX_ALIGN_HACK
typedef union { unsigned char data[ data_size ]; } aligned_storage_t;
detail::max_align_t hack;
aligned_storage_t data;
#else
typedef typename detail::typelist_max< variant_types >::type max_type;
typedef variant_ALIGN_AS( max_type ) align_as_type;
typedef union { align_as_type data[ 1 + ( data_size - 1 ) / sizeof(align_as_type) ]; } aligned_storage_t;
aligned_storage_t data;
// # undef variant_ALIGN_AS
#endif // variant_CONFIG_MAX_ALIGN_HACK
type_index_t type_index;
};
// 19.7.5 Value access
template< class T, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool holds_alternative( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v ) variant_noexcept
{
return v.index() == variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>::template index_of<T>();
}
template< class R, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline R & get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> & v, nonstd_lite_in_place_type_t(R) = nonstd_lite_in_place_type(R) )
{
return v.template get<R>();
}
template< class R, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline R const & get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v, nonstd_lite_in_place_type_t(R) = nonstd_lite_in_place_type(R) )
{
return v.template get<R>();
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename variant_alternative< K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type &
get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> & v, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( K == v.index() );
#else
if ( K != v.index() )
{
throw bad_variant_access();
}
#endif
return v.template get<K>();
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename variant_alternative< K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type const &
get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( K == v.index() );
#else
if ( K != v.index() )
{
throw bad_variant_access();
}
#endif
return v.template get<K>();
}
#if variant_CPP11_OR_GREATER
template< class R, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline R && get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> && v, nonstd_lite_in_place_type_t(R) = nonstd_lite_in_place_type(R) )
{
return std::move(v.template get<R>());
}
template< class R, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline R const && get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const && v, nonstd_lite_in_place_type_t(R) = nonstd_lite_in_place_type(R) )
{
return std::move(v.template get<R>());
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename variant_alternative< K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type &&
get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> && v, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( K == v.index() );
#else
if ( K != v.index() )
{
throw bad_variant_access();
}
#endif
return std::move(v.template get<K>());
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename variant_alternative< K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type const &&
get( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const && v, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
#if variant_CONFIG_NO_EXCEPTIONS
assert( K == v.index() );
#else
if ( K != v.index() )
{
throw bad_variant_access();
}
#endif
return std::move(v.template get<K>());
}
#endif // variant_CPP11_OR_GREATER
template< class T, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename std11::add_pointer<T>::type
get_if( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> * pv, nonstd_lite_in_place_type_t(T) = nonstd_lite_in_place_type(T) )
{
return ( pv->index() == variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>::template index_of<T>() ) ? &get<T>( *pv ) : variant_nullptr;
}
template< class T, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename std11::add_pointer<const T>::type
get_if( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const * pv, nonstd_lite_in_place_type_t(T) = nonstd_lite_in_place_type(T))
{
return ( pv->index() == variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>::template index_of<T>() ) ? &get<T>( *pv ) : variant_nullptr;
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename std11::add_pointer< typename variant_alternative<K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type >::type
get_if( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> * pv, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
return ( pv->index() == K ) ? &get<K>( *pv ) : variant_nullptr;
}
template< std::size_t K, class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline typename std11::add_pointer< const typename variant_alternative<K, variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::type >::type
get_if( variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const * pv, nonstd_lite_in_place_index_t(K) = nonstd_lite_in_place_index(K) )
{
return ( pv->index() == K ) ? &get<K>( *pv ) : variant_nullptr;
}
// 19.7.10 Specialized algorithms
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15
#if variant_CPP11_OR_GREATER
variant_REQUIRES_T(
std::is_move_constructible<T0>::value && std17::is_swappable<T0>::value &&
std::is_move_constructible<T1>::value && std17::is_swappable<T1>::value &&
std::is_move_constructible<T2>::value && std17::is_swappable<T2>::value &&
std::is_move_constructible<T3>::value && std17::is_swappable<T3>::value &&
std::is_move_constructible<T4>::value && std17::is_swappable<T4>::value &&
std::is_move_constructible<T5>::value && std17::is_swappable<T5>::value &&
std::is_move_constructible<T6>::value && std17::is_swappable<T6>::value &&
std::is_move_constructible<T7>::value && std17::is_swappable<T7>::value &&
std::is_move_constructible<T8>::value && std17::is_swappable<T8>::value &&
std::is_move_constructible<T9>::value && std17::is_swappable<T9>::value &&
std::is_move_constructible<T10>::value && std17::is_swappable<T10>::value &&
std::is_move_constructible<T11>::value && std17::is_swappable<T11>::value &&
std::is_move_constructible<T12>::value && std17::is_swappable<T12>::value &&
std::is_move_constructible<T13>::value && std17::is_swappable<T13>::value &&
std::is_move_constructible<T14>::value && std17::is_swappable<T14>::value &&
std::is_move_constructible<T15>::value && std17::is_swappable<T15>::value
)
#endif
>
inline void swap(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> & a,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> & b )
#if variant_CPP11_OR_GREATER
noexcept( noexcept( a.swap( b ) ) )
#endif
{
a.swap( b );
}
// 19.7.7 Visitation
// Variant 'visitor' implementation
namespace detail
{
template< typename R, typename VT >
struct VisitorApplicatorImpl
{
template< typename Visitor, typename T >
static R apply(Visitor const& v, T const& arg)
{
return v(arg);
}
};
template< typename R, typename VT >
struct VisitorApplicatorImpl<R, TX<VT> >
{
template< typename Visitor, typename T >
static R apply(Visitor const&, T)
{
// prevent default construction of a const reference, see issue #39:
std::terminate();
}
};
template<typename R>
struct VisitorApplicator;
template< typename R, typename Visitor, typename V1 >
struct VisitorUnwrapper;
#if variant_CPP11_OR_GREATER
template< size_t NumVars, typename R, typename Visitor, typename ... T >
#else
template< size_t NumVars, typename R, typename Visitor, typename T1, typename T2 = S0, typename T3 = S0, typename T4 = S0, typename T5 = S0 >
#endif
struct TypedVisitorUnwrapper;
template< typename R, typename Visitor, typename T2 >
struct TypedVisitorUnwrapper<2, R, Visitor, T2>
{
const Visitor& visitor;
T2 const& val2;
TypedVisitorUnwrapper(const Visitor& visitor_, T2 const& val2_)
: visitor(visitor_)
, val2(val2_)
{
}
template<typename T>
R operator()(const T& val1) const
{
return visitor(val1, val2);
}
};
template< typename R, typename Visitor, typename T2, typename T3 >
struct TypedVisitorUnwrapper<3, R, Visitor, T2, T3>
{
const Visitor& visitor;
T2 const& val2;
T3 const& val3;
TypedVisitorUnwrapper(const Visitor& visitor_, T2 const& val2_, T3 const& val3_)
: visitor(visitor_)
, val2(val2_)
, val3(val3_)
{
}
template<typename T>
R operator()(const T& val1) const
{
return visitor(val1, val2, val3);
}
};
template< typename R, typename Visitor, typename T2, typename T3, typename T4 >
struct TypedVisitorUnwrapper<4, R, Visitor, T2, T3, T4>
{
const Visitor& visitor;
T2 const& val2;
T3 const& val3;
T4 const& val4;
TypedVisitorUnwrapper(const Visitor& visitor_, T2 const& val2_, T3 const& val3_, T4 const& val4_)
: visitor(visitor_)
, val2(val2_)
, val3(val3_)
, val4(val4_)
{
}
template<typename T>
R operator()(const T& val1) const
{
return visitor(val1, val2, val3, val4);
}
};
template< typename R, typename Visitor, typename T2, typename T3, typename T4, typename T5 >
struct TypedVisitorUnwrapper<5, R, Visitor, T2, T3, T4, T5>
{
const Visitor& visitor;
T2 const& val2;
T3 const& val3;
T4 const& val4;
T5 const& val5;
TypedVisitorUnwrapper(const Visitor& visitor_, T2 const& val2_, T3 const& val3_, T4 const& val4_, T5 const& val5_)
: visitor(visitor_)
, val2(val2_)
, val3(val3_)
, val4(val4_)
, val5(val5_)
{
}
template<typename T>
R operator()(const T& val1) const
{
return visitor(val1, val2, val3, val4, val5);
}
};
template<typename R, typename Visitor, typename V2>
struct VisitorUnwrapper
{
const Visitor& visitor;
const V2& r;
VisitorUnwrapper(const Visitor& visitor_, const V2& r_)
: visitor(visitor_)
, r(r_)
{
}
template< typename T1 >
R operator()(T1 const& val1) const
{
typedef TypedVisitorUnwrapper<2, R, Visitor, T1> visitor_type;
return VisitorApplicator<R>::apply(visitor_type(visitor, val1), r);
}
template< typename T1, typename T2 >
R operator()(T1 const& val1, T2 const& val2) const
{
typedef TypedVisitorUnwrapper<3, R, Visitor, T1, T2> visitor_type;
return VisitorApplicator<R>::apply(visitor_type(visitor, val1, val2), r);
}
template< typename T1, typename T2, typename T3 >
R operator()(T1 const& val1, T2 const& val2, T3 const& val3) const
{
typedef TypedVisitorUnwrapper<4, R, Visitor, T1, T2, T3> visitor_type;
return VisitorApplicator<R>::apply(visitor_type(visitor, val1, val2, val3), r);
}
template< typename T1, typename T2, typename T3, typename T4 >
R operator()(T1 const& val1, T2 const& val2, T3 const& val3, T4 const& val4) const
{
typedef TypedVisitorUnwrapper<5, R, Visitor, T1, T2, T3, T4> visitor_type;
return VisitorApplicator<R>::apply(visitor_type(visitor, val1, val2, val3, val4), r);
}
template< typename T1, typename T2, typename T3, typename T4, typename T5 >
R operator()(T1 const& val1, T2 const& val2, T3 const& val3, T4 const& val4, T5 const& val5) const
{
typedef TypedVisitorUnwrapper<6, R, Visitor, T1, T2, T3, T4, T5> visitor_type;
return VisitorApplicator<R>::apply(visitor_type(visitor, val1, val2, val3, val4, val5), r);
}
};
template<typename R>
struct VisitorApplicator
{
template<typename Visitor, typename V1>
static R apply(const Visitor& v, const V1& arg)
{
switch( arg.index() )
{
case 0: return apply_visitor<0>(v, arg);
case 1: return apply_visitor<1>(v, arg);
case 2: return apply_visitor<2>(v, arg);
case 3: return apply_visitor<3>(v, arg);
case 4: return apply_visitor<4>(v, arg);
case 5: return apply_visitor<5>(v, arg);
case 6: return apply_visitor<6>(v, arg);
case 7: return apply_visitor<7>(v, arg);
case 8: return apply_visitor<8>(v, arg);
case 9: return apply_visitor<9>(v, arg);
case 10: return apply_visitor<10>(v, arg);
case 11: return apply_visitor<11>(v, arg);
case 12: return apply_visitor<12>(v, arg);
case 13: return apply_visitor<13>(v, arg);
case 14: return apply_visitor<14>(v, arg);
case 15: return apply_visitor<15>(v, arg);
// prevent default construction of a const reference, see issue #39:
default: std::terminate();
}
}
template<size_t Idx, typename Visitor, typename V1>
static R apply_visitor(const Visitor& v, const V1& arg)
{
#if variant_CPP11_OR_GREATER
typedef typename variant_alternative<Idx, typename std::decay<V1>::type>::type value_type;
#else
typedef typename variant_alternative<Idx, V1>::type value_type;
#endif
return VisitorApplicatorImpl<R, value_type>::apply(v, get<Idx>(arg));
}
#if variant_CPP11_OR_GREATER
template<typename Visitor, typename V1, typename V2, typename ... V>
static R apply(const Visitor& v, const V1& arg1, const V2& arg2, const V ... args)
{
typedef VisitorUnwrapper<R, Visitor, V1> Unwrapper;
Unwrapper unwrapper(v, arg1);
return apply(unwrapper, arg2, args ...);
}
#else
template< typename Visitor, typename V1, typename V2 >
static R apply(const Visitor& v, V1 const& arg1, V2 const& arg2)
{
typedef VisitorUnwrapper<R, Visitor, V1> Unwrapper;
Unwrapper unwrapper(v, arg1);
return apply(unwrapper, arg2);
}
template< typename Visitor, typename V1, typename V2, typename V3 >
static R apply(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3)
{
typedef VisitorUnwrapper<R, Visitor, V1> Unwrapper;
Unwrapper unwrapper(v, arg1);
return apply(unwrapper, arg2, arg3);
}
template< typename Visitor, typename V1, typename V2, typename V3, typename V4 >
static R apply(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3, V4 const& arg4)
{
typedef VisitorUnwrapper<R, Visitor, V1> Unwrapper;
Unwrapper unwrapper(v, arg1);
return apply(unwrapper, arg2, arg3, arg4);
}
template< typename Visitor, typename V1, typename V2, typename V3, typename V4, typename V5 >
static R apply(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3, V4 const& arg4, V5 const& arg5)
{
typedef VisitorUnwrapper<R, Visitor, V1> Unwrapper;
Unwrapper unwrapper(v, arg1);
return apply(unwrapper, arg2, arg3, arg4, arg5);
}
#endif
};
#if variant_CPP11_OR_GREATER
template< size_t NumVars, typename Visitor, typename ... V >
struct VisitorImpl
{
typedef decltype(std::declval<Visitor>()(get<0>(static_cast<const V&>(std::declval<V>()))...)) result_type;
typedef VisitorApplicator<result_type> applicator_type;
};
#endif
} // detail
#if variant_CPP11_OR_GREATER
// No perfect forwarding here in order to simplify code
template< typename Visitor, typename ... V >
inline auto visit(Visitor const& v, V const& ... vars) -> typename detail::VisitorImpl<sizeof ... (V), Visitor, V... > ::result_type
{
typedef detail::VisitorImpl<sizeof ... (V), Visitor, V... > impl_type;
return impl_type::applicator_type::apply(v, vars...);
}
#else
template< typename R, typename Visitor, typename V1 >
inline R visit(const Visitor& v, V1 const& arg1)
{
return detail::VisitorApplicator<R>::apply(v, arg1);
}
template< typename R, typename Visitor, typename V1, typename V2 >
inline R visit(const Visitor& v, V1 const& arg1, V2 const& arg2)
{
return detail::VisitorApplicator<R>::apply(v, arg1, arg2);
}
template< typename R, typename Visitor, typename V1, typename V2, typename V3 >
inline R visit(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3)
{
return detail::VisitorApplicator<R>::apply(v, arg1, arg2, arg3);
}
template< typename R, typename Visitor, typename V1, typename V2, typename V3, typename V4 >
inline R visit(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3, V4 const& arg4)
{
return detail::VisitorApplicator<R>::apply(v, arg1, arg2, arg3, arg4);
}
template< typename R, typename Visitor, typename V1, typename V2, typename V3, typename V4, typename V5 >
inline R visit(const Visitor& v, V1 const& arg1, V2 const& arg2, V3 const& arg3, V4 const& arg4, V5 const& arg5)
{
return detail::VisitorApplicator<R>::apply(v, arg1, arg2, arg3, arg4, arg5);
}
#endif
// 19.7.6 Relational operators
namespace detail {
template< class Variant >
struct Comparator
{
static inline bool equal( Variant const & v, Variant const & w )
{
switch( v.index() )
{
case 0: return get<0>( v ) == get<0>( w );
case 1: return get<1>( v ) == get<1>( w );
case 2: return get<2>( v ) == get<2>( w );
case 3: return get<3>( v ) == get<3>( w );
case 4: return get<4>( v ) == get<4>( w );
case 5: return get<5>( v ) == get<5>( w );
case 6: return get<6>( v ) == get<6>( w );
case 7: return get<7>( v ) == get<7>( w );
case 8: return get<8>( v ) == get<8>( w );
case 9: return get<9>( v ) == get<9>( w );
case 10: return get<10>( v ) == get<10>( w );
case 11: return get<11>( v ) == get<11>( w );
case 12: return get<12>( v ) == get<12>( w );
case 13: return get<13>( v ) == get<13>( w );
case 14: return get<14>( v ) == get<14>( w );
case 15: return get<15>( v ) == get<15>( w );
default: return false;
}
}
static inline bool less_than( Variant const & v, Variant const & w )
{
switch( v.index() )
{
case 0: return get<0>( v ) < get<0>( w );
case 1: return get<1>( v ) < get<1>( w );
case 2: return get<2>( v ) < get<2>( w );
case 3: return get<3>( v ) < get<3>( w );
case 4: return get<4>( v ) < get<4>( w );
case 5: return get<5>( v ) < get<5>( w );
case 6: return get<6>( v ) < get<6>( w );
case 7: return get<7>( v ) < get<7>( w );
case 8: return get<8>( v ) < get<8>( w );
case 9: return get<9>( v ) < get<9>( w );
case 10: return get<10>( v ) < get<10>( w );
case 11: return get<11>( v ) < get<11>( w );
case 12: return get<12>( v ) < get<12>( w );
case 13: return get<13>( v ) < get<13>( w );
case 14: return get<14>( v ) < get<14>( w );
case 15: return get<15>( v ) < get<15>( w );
default: return false;
}
}
};
} //namespace detail
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator==(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
if ( v.index() != w.index() ) return false;
else if ( v.valueless_by_exception() ) return true;
else return detail::Comparator< variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::equal( v, w );
}
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator!=(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
return ! ( v == w );
}
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator<(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
if ( w.valueless_by_exception() ) return false;
else if ( v.valueless_by_exception() ) return true;
else if ( v.index() < w.index() ) return true;
else if ( v.index() > w.index() ) return false;
else return detail::Comparator< variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >::less_than( v, w );
}
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator>(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
return w < v;
}
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator<=(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
return ! ( v > w );
}
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
inline bool operator>=(
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v,
variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & w )
{
return ! ( v < w );
}
} // namespace variants
using namespace variants;
} // namespace nonstd
#if variant_CPP11_OR_GREATER
// 19.7.12 Hash support
namespace std {
template<>
struct hash< nonstd::monostate >
{
std::size_t operator()( nonstd::monostate ) const variant_noexcept
{
return 42;
}
};
template< class T0, class T1, class T2, class T3, class T4, class T5, class T6, class T7, class T8, class T9, class T10, class T11, class T12, class T13, class T14, class T15 >
struct hash< nonstd::variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> >
{
std::size_t operator()( nonstd::variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15> const & v ) const variant_noexcept
{
namespace nvd = nonstd::variants::detail;
switch( v.index() )
{
case 0: return nvd::hash( 0 ) ^ nvd::hash( get<0>( v ) );
case 1: return nvd::hash( 1 ) ^ nvd::hash( get<1>( v ) );
case 2: return nvd::hash( 2 ) ^ nvd::hash( get<2>( v ) );
case 3: return nvd::hash( 3 ) ^ nvd::hash( get<3>( v ) );
case 4: return nvd::hash( 4 ) ^ nvd::hash( get<4>( v ) );
case 5: return nvd::hash( 5 ) ^ nvd::hash( get<5>( v ) );
case 6: return nvd::hash( 6 ) ^ nvd::hash( get<6>( v ) );
case 7: return nvd::hash( 7 ) ^ nvd::hash( get<7>( v ) );
case 8: return nvd::hash( 8 ) ^ nvd::hash( get<8>( v ) );
case 9: return nvd::hash( 9 ) ^ nvd::hash( get<9>( v ) );
case 10: return nvd::hash( 10 ) ^ nvd::hash( get<10>( v ) );
case 11: return nvd::hash( 11 ) ^ nvd::hash( get<11>( v ) );
case 12: return nvd::hash( 12 ) ^ nvd::hash( get<12>( v ) );
case 13: return nvd::hash( 13 ) ^ nvd::hash( get<13>( v ) );
case 14: return nvd::hash( 14 ) ^ nvd::hash( get<14>( v ) );
case 15: return nvd::hash( 15 ) ^ nvd::hash( get<15>( v ) );
default: return 0;
}
}
};
} //namespace std
#endif // variant_CPP11_OR_GREATER
#if variant_BETWEEN( variant_COMPILER_MSVC_VER, 1300, 1900 )
# pragma warning( pop )
#endif
#endif // variant_USES_STD_VARIANT
#endif // NONSTD_VARIANT_LITE_HPP
nonstd::variants::monostate
Definition variant.hpp:1197
nonstd::variants::variant
Definition variant.hpp:1301
nonstd::variants::variant::operator=
variant & operator=(T14 const &t14)
Definition variant.hpp:1737
nonstd::variants::variant::copy_assign
variant & copy_assign(variant const &other)
Definition variant.hpp:1937
nonstd::variants::variant::variant
variant(T10 const &t10)
Definition variant.hpp:1387
nonstd::variants::variant::to_size_t
static variant_constexpr std::size_t to_size_t(U index)
Definition variant.hpp:1927
nonstd::variants::variant::operator=
variant & operator=(T11 const &t11)
Definition variant.hpp:1734
nonstd::variants::variant::variant
variant(T5 const &t5)
Definition variant.hpp:1382
nonstd::variants::variant::get
variant_alternative< K, variant >::type & get()
Definition variant.hpp:1889
nonstd::variants::variant::operator=
variant & operator=(T3 const &t3)
Definition variant.hpp:1726
nonstd::variants::variant::variant
variant(T2 const &t2)
Definition variant.hpp:1379
nonstd::variants::variant::variant
variant(T1 const &t1)
Definition variant.hpp:1378
nonstd::variants::variant::type_index
type_index_t type_index
Definition variant.hpp:2077
nonstd::variants::variant::swap
void swap(variant &other)
Definition variant.hpp:1804
nonstd::variants::variant::operator=
variant & operator=(T10 const &t10)
Definition variant.hpp:1733
nonstd::variants::variant::variant
variant(T14 const &t14)
Definition variant.hpp:1391
nonstd::variants::variant::operator=
variant & operator=(T13 const &t13)
Definition variant.hpp:1736
nonstd::variants::variant::operator=
variant & operator=(T9 const &t9)
Definition variant.hpp:1732
nonstd::variants::variant::variant
variant(T6 const &t6)
Definition variant.hpp:1383
nonstd::variants::variant::as
U * as()
Definition variant.hpp:1915
nonstd::variants::variant::variant
variant(T11 const &t11)
Definition variant.hpp:1388
nonstd::variants::variant::data
aligned_storage_t data
Definition variant.hpp:2071
nonstd::variants::variant::variant
variant()
Definition variant.hpp:1308
nonstd::variants::variant::operator=
variant & operator=(T0 const &t0)
Definition variant.hpp:1723
nonstd::variants::variant::assign_value
variant & assign_value(T const &value)
Definition variant.hpp:2007
nonstd::variants::variant::ptr
void * ptr() variant_noexcept
Definition variant.hpp:1904
nonstd::variants::variant::type_index_t
helper_type::type_index_t type_index_t
Definition variant.hpp:1902
nonstd::variants::variant::~variant
~variant()
Definition variant.hpp:1551
nonstd::variants::variant::helper_type
detail::helper< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > helper_type
Definition variant.hpp:1302
nonstd::variants::variant::variant
variant(T15 const &t15)
Definition variant.hpp:1392
nonstd::variants::variant::variant_ALIGN_AS
typedef variant_ALIGN_AS(max_type) align_as_type
nonstd::variants::variant::operator=
variant & operator=(T1 const &t1)
Definition variant.hpp:1724
nonstd::variants::variant::swap_value
void swap_value(type_index_t index, variant &other)
Definition variant.hpp:2023
nonstd::variants::variant::variant
variant(T4 const &t4)
Definition variant.hpp:1381
nonstd::variants::variant::index_of
static variant_constexpr std::size_t index_of() variant_noexcept
Definition variant.hpp:1854
nonstd::variants::variant::variant
variant(T12 const &t12)
Definition variant.hpp:1389
nonstd::variants::variant::operator=
variant & operator=(T8 const &t8)
Definition variant.hpp:1731
nonstd::variants::variant::ptr
void const * ptr() const variant_noexcept
Definition variant.hpp:1909
nonstd::variants::variant::variant
variant(T13 const &t13)
Definition variant.hpp:1390
nonstd::variants::variant::operator=
variant & operator=(variant const &other)
Definition variant.hpp:1561
nonstd::variants::variant::variant
variant(T3 const &t3)
Definition variant.hpp:1380
nonstd::variants::variant::operator=
variant & operator=(T4 const &t4)
Definition variant.hpp:1727
nonstd::variants::variant::operator=
variant & operator=(T15 const &t15)
Definition variant.hpp:1738
nonstd::variants::variant::variant
variant(variant const &other)
Definition variant.hpp:1478
nonstd::variants::variant::as
U const * as() const
Definition variant.hpp:1921
nonstd::variants::variant::operator=
variant & operator=(T2 const &t2)
Definition variant.hpp:1725
nonstd::variants::variant::get
T & get()
Definition variant.hpp:1860
nonstd::variants::variant::variant
variant(T0 const &t0)
Definition variant.hpp:1377
nonstd::variants::variant::index
std::size_t index() const
Definition variant.hpp:1742
nonstd::variants::variant::variant_npos_internal
variant_constexpr type_index_t variant_npos_internal() const variant_noexcept
Definition variant.hpp:1932
nonstd::variants::variant::operator=
variant & operator=(T6 const &t6)
Definition variant.hpp:1729
nonstd::variants::variant::get
variant_alternative< K, variant >::type const & get() const
Definition variant.hpp:1896
nonstd::variants::variant::get
T const & get() const
Definition variant.hpp:1874
nonstd::variants::variant::variant_TL16
typedef variant_TL16(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) variant_types
nonstd::variants::variant::operator=
variant & operator=(T5 const &t5)
Definition variant.hpp:1728
nonstd::variants::variant::operator=
variant & operator=(T7 const &t7)
Definition variant.hpp:1730
nonstd::variants::variant::variant
variant(T7 const &t7)
Definition variant.hpp:1384
nonstd::variants::variant::variant
variant(T8 const &t8)
Definition variant.hpp:1385
nonstd::variants::variant::max_type
detail::typelist_max< variant_types >::type max_type
Definition variant.hpp:2066
nonstd::variants::variant::valueless_by_exception
bool valueless_by_exception() const
Definition variant.hpp:1797
nonstd::variants::variant::variant
variant(T9 const &t9)
Definition variant.hpp:1386
nonstd::variants::variant::operator=
variant & operator=(T12 const &t12)
Definition variant.hpp:1735
nonstd::variants::detail
Definition variant.hpp:188
nonstd::variants::detail::T1
TX< S1 > T1
Definition variant.hpp:661
nonstd::variants::detail::T10
TX< S10 > T10
Definition variant.hpp:670
nonstd::variants::detail::T8
TX< S8 > T8
Definition variant.hpp:668
nonstd::variants::detail::T14
TX< S14 > T14
Definition variant.hpp:674
nonstd::variants::detail::T5
TX< S5 > T5
Definition variant.hpp:665
nonstd::variants::detail::index_tag
void index_tag(index_tag_t< K >=index_tag_t< K >())
Definition variant.hpp:194
nonstd::variants::detail::T11
TX< S11 > T11
Definition variant.hpp:671
nonstd::variants::detail::T0
TX< S0 > T0
Definition variant.hpp:660
nonstd::variants::detail::T4
TX< S4 > T4
Definition variant.hpp:664
nonstd::variants::detail::T3
TX< S3 > T3
Definition variant.hpp:663
nonstd::variants::detail::T7
TX< S7 > T7
Definition variant.hpp:667
nonstd::variants::detail::T13
TX< S13 > T13
Definition variant.hpp:673
nonstd::variants::detail::T12
TX< S12 > T12
Definition variant.hpp:672
nonstd::variants::detail::T15
TX< S15 > T15
Definition variant.hpp:675
nonstd::variants::detail::T2
TX< S2 > T2
Definition variant.hpp:662
nonstd::variants::detail::T9
TX< S9 > T9
Definition variant.hpp:669
nonstd::variants::detail::T6
TX< S6 > T6
Definition variant.hpp:666
nonstd::variants::swap
void swap(variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > &a, variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > &b)
Definition variant.hpp:2228
nonstd::variants::get_if
std11::add_pointer< T >::type get_if(variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > *pv, nonstd_lite_in_place_type_t(T)=nonstd_lite_in_place_type(T))
Definition variant.hpp:2178
nonstd::variants::visit
R visit(const Visitor &v, V1 const &arg1)
Definition variant.hpp:2532
nonstd::variants::holds_alternative
bool holds_alternative(variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > const &v) variant_noexcept
Definition variant.hpp:2083
nonstd
Definition expected.hpp:132
nonstd::in_place_type
in_place_t in_place_type(detail::in_place_type_tag< T >=detail::in_place_type_tag< T >())
Definition expected.hpp:158
nonstd::in_place_index
in_place_t in_place_index(detail::in_place_index_tag< K >=detail::in_place_index_tag< K >())
Definition expected.hpp:164
nonstd::in_place
in_place_t in_place(detail::in_place_type_tag< T >=detail::in_place_type_tag< T >())
Definition expected.hpp:146
restinio::http_field_parsers::qvalue_details::extremum_min_t::v
@ v
restinio::get
Value_Type get(const router::route_params_t &params, string_view_t key)
Cast named parameter value to a given type.
Definition express.hpp:850
std
STL namespace.
nonstd::variants::detail::Comparator
Definition variant.hpp:2569
nonstd::variants::detail::Comparator::less_than
static bool less_than(Variant const &v, Variant const &w)
Definition variant.hpp:2595
nonstd::variants::detail::Comparator::equal
static bool equal(Variant const &v, Variant const &w)
Definition variant.hpp:2570
nonstd::variants::detail::S0
Definition variant.hpp:660
nonstd::variants::detail::S10
Definition variant.hpp:670
nonstd::variants::detail::S11
Definition variant.hpp:671
nonstd::variants::detail::S12
Definition variant.hpp:672
nonstd::variants::detail::S13
Definition variant.hpp:673
nonstd::variants::detail::S14
Definition variant.hpp:674
nonstd::variants::detail::S15
Definition variant.hpp:675
nonstd::variants::detail::S1
Definition variant.hpp:661
nonstd::variants::detail::S2
Definition variant.hpp:662
nonstd::variants::detail::S3
Definition variant.hpp:663
nonstd::variants::detail::S4
Definition variant.hpp:664
nonstd::variants::detail::S5
Definition variant.hpp:665
nonstd::variants::detail::S6
Definition variant.hpp:666
nonstd::variants::detail::S7
Definition variant.hpp:667
nonstd::variants::detail::S8
Definition variant.hpp:668
nonstd::variants::detail::S9
Definition variant.hpp:669
nonstd::variants::detail::TX
Definition variant.hpp:630
nonstd::variants::detail::TX::operator==
bool operator==(T const &) const
Definition variant.hpp:649
nonstd::variants::detail::TX::operator^
TX< T > operator^(U const &) const
Definition variant.hpp:654
nonstd::variants::detail::TX::operator&&
TX< T > operator&&(U const &) const
Definition variant.hpp:656
nonstd::variants::detail::TX::operator%
TX< T > operator%(U const &) const
Definition variant.hpp:642
nonstd::variants::detail::TX::operator&
TX< T > * operator&() const
Definition variant.hpp:637
nonstd::variants::detail::TX::operator+
TX< T > operator+() const
Definition variant.hpp:631
nonstd::variants::detail::TX::operator-
TX< T > operator-() const
Definition variant.hpp:632
nonstd::variants::detail::TX::operator!
TX< T > operator!() const
Definition variant.hpp:634
nonstd::variants::detail::TX::operator*
TX< T > operator*(U const &) const
Definition variant.hpp:639
nonstd::variants::detail::TX::operator|
TX< T > operator|(U const &) const
Definition variant.hpp:653
nonstd::variants::detail::TX::operator/
TX< T > operator/(U const &) const
Definition variant.hpp:640
nonstd::variants::detail::TX::operator~
TX< T > operator~() const
Definition variant.hpp:635
nonstd::variants::detail::TX::operator||
TX< T > operator||(U const &) const
Definition variant.hpp:657
nonstd::variants::detail::TX::operator>>
TX< T > operator>>(U const &) const
Definition variant.hpp:647
nonstd::variants::detail::TypedVisitorUnwrapper< 2, R, Visitor, T2 >::operator()
R operator()(const T &val1) const
Definition variant.hpp:2293
nonstd::variants::detail::TypedVisitorUnwrapper< 2, R, Visitor, T2 >::visitor
const Visitor & visitor
Definition variant.hpp:2282
nonstd::variants::detail::TypedVisitorUnwrapper< 2, R, Visitor, T2 >::TypedVisitorUnwrapper
TypedVisitorUnwrapper(const Visitor &visitor_, T2 const &val2_)
Definition variant.hpp:2285
nonstd::variants::detail::TypedVisitorUnwrapper< 2, R, Visitor, T2 >::val2
T2 const & val2
Definition variant.hpp:2283
nonstd::variants::detail::TypedVisitorUnwrapper< 3, R, Visitor, T2, T3 >::val2
T2 const & val2
Definition variant.hpp:2303
nonstd::variants::detail::TypedVisitorUnwrapper< 3, R, Visitor, T2, T3 >::val3
T3 const & val3
Definition variant.hpp:2304
nonstd::variants::detail::TypedVisitorUnwrapper< 3, R, Visitor, T2, T3 >::TypedVisitorUnwrapper
TypedVisitorUnwrapper(const Visitor &visitor_, T2 const &val2_, T3 const &val3_)
Definition variant.hpp:2306
nonstd::variants::detail::TypedVisitorUnwrapper< 3, R, Visitor, T2, T3 >::operator()
R operator()(const T &val1) const
Definition variant.hpp:2315
nonstd::variants::detail::TypedVisitorUnwrapper< 3, R, Visitor, T2, T3 >::visitor
const Visitor & visitor
Definition variant.hpp:2302
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::operator()
R operator()(const T &val1) const
Definition variant.hpp:2339
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::val3
T3 const & val3
Definition variant.hpp:2326
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::val4
T4 const & val4
Definition variant.hpp:2327
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::val2
T2 const & val2
Definition variant.hpp:2325
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::visitor
const Visitor & visitor
Definition variant.hpp:2324
nonstd::variants::detail::TypedVisitorUnwrapper< 4, R, Visitor, T2, T3, T4 >::TypedVisitorUnwrapper
TypedVisitorUnwrapper(const Visitor &visitor_, T2 const &val2_, T3 const &val3_, T4 const &val4_)
Definition variant.hpp:2329
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::val2
T2 const & val2
Definition variant.hpp:2349
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::val5
T5 const & val5
Definition variant.hpp:2352
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::val3
T3 const & val3
Definition variant.hpp:2350
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::val4
T4 const & val4
Definition variant.hpp:2351
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::TypedVisitorUnwrapper
TypedVisitorUnwrapper(const Visitor &visitor_, T2 const &val2_, T3 const &val3_, T4 const &val4_, T5 const &val5_)
Definition variant.hpp:2354
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::operator()
R operator()(const T &val1) const
Definition variant.hpp:2365
nonstd::variants::detail::TypedVisitorUnwrapper< 5, R, Visitor, T2, T3, T4, T5 >::visitor
const Visitor & visitor
Definition variant.hpp:2348
nonstd::variants::detail::TypedVisitorUnwrapper
Definition variant.hpp:2277
nonstd::variants::detail::VisitorApplicator
Definition variant.hpp:2426
nonstd::variants::detail::VisitorApplicator::apply
static R apply(const Visitor &v, V1 const &arg1, V2 const &arg2, V3 const &arg3, V4 const &arg4)
Definition variant.hpp:2493
nonstd::variants::detail::VisitorApplicator::apply
static R apply(const Visitor &v, V1 const &arg1, V2 const &arg2)
Definition variant.hpp:2477
nonstd::variants::detail::VisitorApplicator::apply
static R apply(const Visitor &v, const V1 &arg)
Definition variant.hpp:2428
nonstd::variants::detail::VisitorApplicator::apply_visitor
static R apply_visitor(const Visitor &v, const V1 &arg)
Definition variant.hpp:2455
nonstd::variants::detail::VisitorApplicator::apply
static R apply(const Visitor &v, V1 const &arg1, V2 const &arg2, V3 const &arg3, V4 const &arg4, V5 const &arg5)
Definition variant.hpp:2501
nonstd::variants::detail::VisitorApplicator::apply
static R apply(const Visitor &v, V1 const &arg1, V2 const &arg2, V3 const &arg3)
Definition variant.hpp:2485
nonstd::variants::detail::VisitorApplicatorImpl< R, TX< VT > >::apply
static R apply(Visitor const &, T)
Definition variant.hpp:2259
nonstd::variants::detail::VisitorApplicatorImpl
Definition variant.hpp:2247
nonstd::variants::detail::VisitorApplicatorImpl::apply
static R apply(Visitor const &v, T const &arg)
Definition variant.hpp:2249
nonstd::variants::detail::VisitorUnwrapper
Definition variant.hpp:2375
nonstd::variants::detail::VisitorUnwrapper::operator()
R operator()(T1 const &val1, T2 const &val2, T3 const &val3, T4 const &val4, T5 const &val5) const
Definition variant.hpp:2415
nonstd::variants::detail::VisitorUnwrapper::operator()
R operator()(T1 const &val1) const
Definition variant.hpp:2387
nonstd::variants::detail::VisitorUnwrapper::operator()
R operator()(T1 const &val1, T2 const &val2, T3 const &val3) const
Definition variant.hpp:2401
nonstd::variants::detail::VisitorUnwrapper::operator()
R operator()(T1 const &val1, T2 const &val2) const
Definition variant.hpp:2394
nonstd::variants::detail::VisitorUnwrapper::r
const V2 & r
Definition variant.hpp:2377
nonstd::variants::detail::VisitorUnwrapper::operator()
R operator()(T1 const &val1, T2 const &val2, T3 const &val3, T4 const &val4) const
Definition variant.hpp:2408
nonstd::variants::detail::VisitorUnwrapper::VisitorUnwrapper
VisitorUnwrapper(const Visitor &visitor_, const V2 &r_)
Definition variant.hpp:2379
nonstd::variants::detail::VisitorUnwrapper::visitor
const Visitor & visitor
Definition variant.hpp:2376
nonstd::variants::detail::alignment_logic
Definition variant.hpp:921
nonstd::variants::detail::alignment_logic::V
V
Definition variant.hpp:922
nonstd::variants::detail::alignment_of_hack
Definition variant.hpp:913
nonstd::variants::detail::alignment_of_hack::t
T t
Definition variant.hpp:915
nonstd::variants::detail::alignment_of_hack::alignment_of_hack
alignment_of_hack()
nonstd::variants::detail::alignment_of_hack::c
char c
Definition variant.hpp:914
nonstd::variants::detail::alignment_of
Definition variant.hpp:927
nonstd::variants::detail::alignment_of::V
V
Definition variant.hpp:928
nonstd::variants::detail::helper
Definition variant.hpp:1020
nonstd::variants::detail::helper::copy_assign
static type_index_t copy_assign(type_index_t const from_index, const void *from_value, void *to_value)
Definition variant.hpp:1160
nonstd::variants::detail::helper::destroy
static void destroy(type_index_t index, void *data)
Definition variant.hpp:1041
nonstd::variants::detail::helper::variant_TL16
typedef variant_TL16(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) variant_types
nonstd::variants::detail::helper::as
static U * as(void *data)
Definition variant.hpp:1025
nonstd::variants::detail::helper::copy_construct
static type_index_t copy_construct(type_index_t const from_index, const void *from_value, void *to_value)
Definition variant.hpp:1135
nonstd::variants::detail::helper::to_index_t
static type_index_t to_index_t(std::size_t index)
Definition variant.hpp:1036
nonstd::variants::detail::helper::as
static U const * as(void const *data)
Definition variant.hpp:1031
nonstd::variants::detail::helper::type_index_t
signed char type_index_t
Definition variant.hpp:1021
nonstd::variants::detail::index_tag_t
Definition variant.hpp:191
nonstd::variants::detail::nulltype
Definition variant.hpp:678
nonstd::variants::detail::struct_t
Definition variant.hpp:948
nonstd::variants::detail::struct_t::_
T _
Definition variant.hpp:948
nonstd::variants::detail::type_of_size< nulltype, N >::type
variant_CONFIG_ALIGN_AS_FALLBACK type
Definition variant.hpp:944
nonstd::variants::detail::type_of_size
Definition variant.hpp:934
nonstd::variants::detail::type_of_size::type
std11::conditional< N==sizeof(typenameList::head), typenameList::head, typenametype_of_size< typenameList::tail, N >::type >::type type
Definition variant.hpp:938
nonstd::variants::detail::typelist_contains_unique_type
Definition variant.hpp:838
nonstd::variants::detail::typelist_index_of< nulltype, T >::V
V
Definition variant.hpp:780
nonstd::variants::detail::typelist_index_of< typelist< Head, Tail >, T >::TV
TV
Definition variant.hpp:793
nonstd::variants::detail::typelist_index_of< typelist< Head, Tail >, T >::V
V
Definition variant.hpp:796
nonstd::variants::detail::typelist_index_of< typelist< T, Tail >, T >::V
V
Definition variant.hpp:786
nonstd::variants::detail::typelist_index_of
Definition variant.hpp:775
nonstd::variants::detail::typelist_max< nulltype >::V
V
Definition variant.hpp:695
nonstd::variants::detail::typelist_max< nulltype >::type
void type
Definition variant.hpp:696
nonstd::variants::detail::typelist_max< typelist< Head, Tail > >::V
V
Definition variant.hpp:708
nonstd::variants::detail::typelist_max< typelist< Head, Tail > >::TV
TV
Definition variant.hpp:703
nonstd::variants::detail::typelist_max< typelist< Head, Tail > >::tail_type
typelist_max< Tail >::type tail_type
Definition variant.hpp:705
nonstd::variants::detail::typelist_max< typelist< Head, Tail > >::type
std11::conditional<(sizeof(Head)>tail_value), Head, tail_type >::type type
Definition variant.hpp:710
nonstd::variants::detail::typelist_max
Definition variant.hpp:690
nonstd::variants::detail::typelist_size< T0 >::V
V
Definition variant.hpp:746
nonstd::variants::detail::typelist_size< T10 >::V
V
Definition variant.hpp:756
nonstd::variants::detail::typelist_size< T11 >::V
V
Definition variant.hpp:757
nonstd::variants::detail::typelist_size< T12 >::V
V
Definition variant.hpp:758
nonstd::variants::detail::typelist_size< T13 >::V
V
Definition variant.hpp:759
nonstd::variants::detail::typelist_size< T14 >::V
V
Definition variant.hpp:760
nonstd::variants::detail::typelist_size< T15 >::V
V
Definition variant.hpp:761
nonstd::variants::detail::typelist_size< T1 >::V
V
Definition variant.hpp:747
nonstd::variants::detail::typelist_size< T2 >::V
V
Definition variant.hpp:748
nonstd::variants::detail::typelist_size< T3 >::V
V
Definition variant.hpp:749
nonstd::variants::detail::typelist_size< T4 >::V
V
Definition variant.hpp:750
nonstd::variants::detail::typelist_size< T5 >::V
V
Definition variant.hpp:751
nonstd::variants::detail::typelist_size< T6 >::V
V
Definition variant.hpp:752
nonstd::variants::detail::typelist_size< T7 >::V
V
Definition variant.hpp:753
nonstd::variants::detail::typelist_size< T8 >::V
V
Definition variant.hpp:754
nonstd::variants::detail::typelist_size< T9 >::V
V
Definition variant.hpp:755
nonstd::variants::detail::typelist_size< nulltype >::V
V
Definition variant.hpp:764
nonstd::variants::detail::typelist_size< typelist< Head, Tail > >::V
V
Definition variant.hpp:769
nonstd::variants::detail::typelist_size
Definition variant.hpp:742
nonstd::variants::detail::typelist_size::V
V
Definition variant.hpp:743
nonstd::variants::detail::typelist_type_at< typelist< Head, Tail >, 0 >::type
Head type
Definition variant.hpp:807
nonstd::variants::detail::typelist_type_at< typelist< Head, Tail >, i >::type
typelist_type_at< Tail, i-1 >::type type
Definition variant.hpp:813
nonstd::variants::detail::typelist_type_at
Definition variant.hpp:802
nonstd::variants::detail::typelist_type_is_unique< List, CmpIndex, 0 >::V
V
Definition variant.hpp:833
nonstd::variants::detail::typelist_type_is_unique
Definition variant.hpp:820
nonstd::variants::detail::typelist_type_is_unique::cur_type
typelist_type_at< List, LastChecked-1 >::type cur_type
Definition variant.hpp:823
nonstd::variants::detail::typelist_type_is_unique::V
V
Definition variant.hpp:826
nonstd::variants::detail::typelist_type_is_unique::cmp_type
typelist_type_at< List, CmpIndex >::type cmp_type
Definition variant.hpp:822
nonstd::variants::detail::typelist
Definition variant.hpp:682
nonstd::variants::detail::typelist::head
Head head
Definition variant.hpp:683
nonstd::variants::detail::typelist::tail
Tail tail
Definition variant.hpp:684
nonstd::variants::std11::add_pointer
Definition variant.hpp:449
nonstd::variants::std11::add_pointer::type
remove_reference< T >::type * type
Definition variant.hpp:450
nonstd::variants::std11::conditional< false, Then, Else >::type
Else type
Definition variant.hpp:488
nonstd::variants::std11::conditional< true, Then, Else >::type
Then type
Definition variant.hpp:485
nonstd::variants::std11::conditional
Definition variant.hpp:482
nonstd::variants::std11::enable_if< true, T >::type
T type
Definition variant.hpp:502
nonstd::variants::std11::enable_if
Definition variant.hpp:499
nonstd::variants::std11::is_same< T, T >::V
V
Definition variant.hpp:519
nonstd::variants::std11::is_same
Definition variant.hpp:513
nonstd::variants::std11::is_same::V
V
Definition variant.hpp:514
nonstd::variants::std11::is_same::value
@ value
Definition variant.hpp:514
nonstd::variants::std11::remove_const< const T >::type
T type
Definition variant.hpp:462
nonstd::variants::std11::remove_const
Definition variant.hpp:461
nonstd::variants::std11::remove_const::type
T type
Definition variant.hpp:461
nonstd::variants::std11::remove_cv
Definition variant.hpp:469
nonstd::variants::std11::remove_cv::type
remove_volatile< typenameremove_const< T >::type >::type type
Definition variant.hpp:470
nonstd::variants::std11::remove_reference< T & >::type
T type
Definition variant.hpp:446
nonstd::variants::std11::remove_reference
Definition variant.hpp:445
nonstd::variants::std11::remove_reference::type
T type
Definition variant.hpp:445
nonstd::variants::std11::remove_volatile< volatile T >::type
T type
Definition variant.hpp:465
nonstd::variants::std11::remove_volatile
Definition variant.hpp:464
nonstd::variants::std11::remove_volatile::type
T type
Definition variant.hpp:464
nonstd::variants::variant_alternative< K, variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > >::type
detail::typelist_type_at< variant_TL16(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15), K >::type type
Definition variant.hpp:1238
nonstd::variants::variant_alternative
Definition variant.hpp:1233
nonstd::variants::variant_size< variant< T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15 > >::_
_
Definition variant.hpp:1218
nonstd::variants::variant_size
Definition variant.hpp:1213
nonstd_lite_in_place_type
#define nonstd_lite_in_place_type(T)
Definition expected.hpp:176
nonstd_lite_in_place_index_t
#define nonstd_lite_in_place_index_t(K)
Definition expected.hpp:173
nonstd_lite_in_place_type_t
#define nonstd_lite_in_place_type_t(T)
Definition expected.hpp:172
nonstd_lite_in_place_index
#define nonstd_lite_in_place_index(K)
Definition expected.hpp:177
variant_index_tag
#define variant_index_tag(K)
Definition variant.hpp:197
variant_override
#define variant_override
Definition variant.hpp:406
variant_CONFIG_ALIGN_AS_FALLBACK
#define variant_CONFIG_ALIGN_AS_FALLBACK
Definition variant.hpp:275
variant_TL16
#define variant_TL16(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16)
Definition variant.hpp:623
variant_noexcept
#define variant_noexcept
Definition variant.hpp:394
variant_ALIGN_TYPE
#define variant_ALIGN_TYPE(type)
Definition variant.hpp:950
variant_REQUIRES_B
#define variant_REQUIRES_B(...)
Definition variant.hpp:544
variant_index_tag_t
#define variant_index_tag_t(K)
Definition variant.hpp:196
variant_nullptr
#define variant_nullptr
Definition variant.hpp:400
variant_constexpr
#define variant_constexpr
Definition variant.hpp:382
nonstd::variants::variant::aligned_storage_t
Definition variant.hpp:2070
const
#define const
Definition zconf.h:230