Cvb::Shims Namespace Reference

Namespace to for standard types that are not available in C++14. More...

Classes
class	bad_optional_access
	Error when accessing not set value. More...
class	bad_variant_access
	Error when accessing not set alternative. More...
struct	in_place_t
	Disambiguation tags that can be passed to the constructors of optional() to indicate that the contained object should be constructed in-place. More...
struct	monostate
	Unit type intended for use as a well-behaved empty alternative in Shims::variant. More...
struct	nullopt_t
	Indicates optional() type with uninitialized state. More...
class	optional
	This class is a replacement for C++17 std::optional. More...
class	variant
	This class is a replacement for C++17 std::variant. More...
struct	variant_alternative
	Compile-time index access to the type of the alternatives at index I. More...
struct	variant_size
	Get the number of alternatives in a variant. More...

Typedefs
template<size_t I, class T>
using	variant_alternative_t = typename variant_alternative<I, T>::type
	Helper type alias for Shims::variant_alternative.

Functions
constexpr bool	operator< (monostate, monostate) noexcept
constexpr bool	operator> (monostate, monostate) noexcept
constexpr bool	operator<= (monostate, monostate) noexcept
constexpr bool	operator>= (monostate, monostate) noexcept
constexpr bool	operator== (monostate, monostate) noexcept
constexpr bool	operator!= (monostate, monostate) noexcept
template<size_t I, class... TS>
const variant_alternative_t< I, variant< TS... > > &	get (const variant< TS... > &var)
	Gets the value of the given Shims::variant var as the alternative with index I.
template<size_t I, class... TS>
variant_alternative_t< I, variant< TS... > > &	get (variant< TS... > &var)
	Gets the value of the given Shims::variant var as the alternative with index I.
template<size_t I, class... TS>
variant_alternative_t< I, variant< TS... > >	get (variant< TS... > &&var)
	Gets the value of the given Shims::variant var as the alternative with index I.
template<class T, class... TS>
const T &	get (const variant< TS... > &var)
	Gets the value of the given Shims::variant var as the alternative with type T.
template<class T, class... TS>
T &	get (variant< TS... > &var)
	Gets the value of the given Shims::variant var as the alternative with type T.
template<class T, class... TS>
T	get (variant< TS... > &&var)
	Gets the value of the given Shims::variant var as the alternative with type T.
template<size_t I, class... TS>
std::add_pointer< variant_alternative_t< I, variant< TS... > > >::type	get_if (variant< TS... > *pvar) noexcept
	Tries to get the value of the given Shims::variant pointer pvar as the alternative with index I.
template<class T, class... TS>
std::add_pointer< constT >::type	get_if (const variant< TS... > *pvar) noexcept
	Tries to get the value of the given Shims::variant pointer pvar as the alternative with type T.
template<class T, class... TS>
std::add_pointer< T >::type	get_if (variant< TS... > *pvar) noexcept
	Tries to get the value of the given Shims::variant pointer pvar as the alternative with type T.
template<class T, class... TS>
bool	holds_alternative (const variant< TS... > &var) noexcept
	Gets whether the Shims::variant var holds an instance of type T.
template<class VISITOR, class VARIANT>
auto	visit (VISITOR &&visitor, VARIANT &&var) -> decltype(visitor(get< 0 >(var)))
	Visits the given Shims::variant var. Cvb::Shims::visit can only visit one variant (not multiple like std::visit).
template<class... TS>
bool	operator== (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Equality operator for Shims::variant objects.
template<class... TS>
bool	operator!= (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Inequality operator for Shims::variant objects.
template<class... TS>
bool	operator< (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Less than operator for Shims::variant objects.
template<class... TS>
bool	operator<= (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Less-than or equal operator for Shims::variant object.
template<class... TS>
bool	operator> (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Greater-than operator for Shims::variant object.
template<class... TS>
bool	operator>= (const variant< TS... > &lhs, const variant< TS... > &rhs)
	Greater-than or equal operator for Shims::variant object.

Variables
static constexpr nullopt_t	nullopt = {}
	Tag to indicate an optional not containing a value.
static constexpr in_place_t	in_place {}
	Tag to indicate an optional to in-place construct a value.
static const constexpr size_t	variant_npos = size_t(-1)
	Returned by variant::index() on invalid state.

Detailed Description

Namespace to for standard types that are not available in C++14.