Opaque container for values of any type. More...

#include <entt.hpp>

Public Member Functions
	meta_any () ENTT_NOEXCEPT
	Default constructor. More...

template<typename Type , typename... Args>
	meta_any (std::in_place_type_t< Type >, [[maybe_unused]] Args &&... args)
	Constructs a meta any by directly initializing the new object. More...

template<typename Type >
	meta_any (std::reference_wrapper< Type > type)
	Constructs a meta any that holds an unmanaged object. More...

	meta_any (meta_handle handle) ENTT_NOEXCEPT
	Constructs a meta any from a meta handle object. More...

template<typename Type , typename = std::enable_if_t<!std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, meta_any>>>
	meta_any (Type &&type)
	Constructs a meta any from a given value. More...

	meta_any (const meta_any &other)
	Copy constructor. More...

	meta_any (meta_any &&other) ENTT_NOEXCEPT
	Move constructor. More...

	~meta_any ()
	Frees the internal storage, whatever it means. More...

template<typename Type , typename = std::enable_if_t<!std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, meta_any>>>
meta_any &	operator= (Type &&type)
	Assignment operator. More...

meta_any &	operator= (const meta_any &other)
	Copy assignment operator. More...

meta_any &	operator= (meta_any &&other) ENTT_NOEXCEPT
	Move assignment operator. More...

meta_type	type () const ENTT_NOEXCEPT
	Returns the meta type of the underlying object. More...

const void *	data () const ENTT_NOEXCEPT
	Returns an opaque pointer to the contained instance. More...

void *	data () ENTT_NOEXCEPT
	Returns an opaque pointer to the contained instance. More...

template<typename Type >
const Type *	try_cast () const ENTT_NOEXCEPT
	Tries to cast an instance to a given type. More...

template<typename Type >
Type *	try_cast () ENTT_NOEXCEPT
	Tries to cast an instance to a given type. More...

template<typename Type >
const Type &	cast () const ENTT_NOEXCEPT
	Tries to cast an instance to a given type. More...

template<typename Type >
Type &	cast () ENTT_NOEXCEPT
	Tries to cast an instance to a given type. More...

template<typename Type >
meta_any	convert () const
	Tries to convert an instance to a given type and returns it. More...

template<typename Type >
bool	convert ()
	Tries to convert an instance to a given type. More...

template<typename Type , typename... Args>
void	emplace (Args &&... args)
	Replaces the contained object by initializing a new instance directly. More...

	operator bool () const ENTT_NOEXCEPT
	Returns false if a container is empty, true otherwise. More...

bool	operator== (const meta_any &other) const ENTT_NOEXCEPT
	Checks if two containers differ in their content. More...

Friends
class	meta_handle
	A meta handle is allowed to inherit from a meta any. More...

void	swap (meta_any &lhs, meta_any &rhs) ENTT_NOEXCEPT
	Swaps two meta any objects. More...

Detailed Description

Opaque container for values of any type.

TURN_OFF_DOXYGENThis class uses a technique called small buffer optimization (SBO) to completely eliminate the need to allocate memory, where possible.
From the user's point of view, nothing will change, but the elimination of allocations will reduce the jumps in memory and therefore will avoid chasing of pointers. This will greatly improve the use of the cache, thus increasing the overall performance.

Warning: Only copy constructible types are suitable for use with this class. A static assertion will abort the compilation when the type provided isn't copy constructible.

Constructor & Destructor Documentation

◆ meta_any() [1/7]

entt::meta_any::meta_any ( )

inline

Default constructor.

◆ meta_any() [2/7]

template<typename Type , typename... Args>

entt::meta_any::meta_any	(	std::in_place_type_t< Type >	,
		[[maybe_unused] ] Args &&...	args
	)

inlineexplicit

Constructs a meta any by directly initializing the new object.

Template Parameters

Type	Type of object to use to initialize the container.
Args	Types of arguments to use to construct the new instance.

Parameters

args	Parameters to use to construct the instance.

◆ meta_any() [3/7]

template<typename Type >

entt::meta_any::meta_any ( std::reference_wrapper< Type > type )

inlineexplicit

Constructs a meta any that holds an unmanaged object.

Template Parameters

Type	Type of object to use to initialize the container.

Parameters

type	An instance of an object to use to initialize the container.

◆ meta_any() [4/7]

entt::meta_any::meta_any ( meta_handle handle )

inline

Constructs a meta any from a meta handle object.

Parameters

handle A reference to an object to use to initialize the meta any.

◆ meta_any() [5/7]

template<typename Type , typename = std::enable_if_t<!std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, meta_any>>>

entt::meta_any::meta_any ( Type && type )

inline

Constructs a meta any from a given value.

Template Parameters

Type	Type of object to use to initialize the container.

Parameters

type	An instance of an object to use to initialize the container.

◆ meta_any() [6/7]

entt::meta_any::meta_any ( const meta_any & other )

inline

Copy constructor.

Parameters

other The instance to copy from.

◆ meta_any() [7/7]

entt::meta_any::meta_any ( meta_any && other )

inline

Move constructor.

After meta any move construction, instances that have been moved from are placed in a valid but unspecified state. It's highly discouraged to continue using them.

Parameters

other The instance to move from.

◆ ~meta_any()

entt::meta_any::~meta_any ( )

inline

Frees the internal storage, whatever it means.

Member Function Documentation

◆ cast() [1/2]

template<typename Type >

const Type& entt::meta_any::cast ( ) const

inline

Tries to cast an instance to a given type.

The type of the instance must be such that the cast is possible.

Warning: Attempting to perform a cast that isn't viable results in undefined behavior.
An assertion will abort the execution at runtime in debug mode in case the cast is not feasible.

Template Parameters

Type	Type to which to cast the instance.

Returns: A reference to the contained instance.

◆ cast() [2/2]

template<typename Type >

Type& entt::meta_any::cast ( )

inline

Tries to cast an instance to a given type.

The type of the instance must be such that the cast is possible.

Warning: Attempting to perform a cast that isn't viable results in undefined behavior.
An assertion will abort the execution at runtime in debug mode in case the cast is not feasible.

Template Parameters

Type	Type to which to cast the instance.

Returns: A reference to the contained instance.

◆ convert() [1/2]

template<typename Type >

meta_any entt::meta_any::convert ( ) const

inline

Tries to convert an instance to a given type and returns it.

Template Parameters

Type	Type to which to convert the instance.

Returns: A valid meta any object if the conversion is possible, an invalid one otherwise.

◆ convert() [2/2]

template<typename Type >

bool entt::meta_any::convert ( )

inline

Tries to convert an instance to a given type.

Template Parameters

Type	Type to which to convert the instance.

Returns: True if the conversion is possible, false otherwise.

◆ data() [1/2]

const void* entt::meta_any::data ( ) const

inline

Returns an opaque pointer to the contained instance.

Returns: An opaque pointer the contained instance, if any.

◆ data() [2/2]

void* entt::meta_any::data ( )

inline

Returns an opaque pointer to the contained instance.

Returns: An opaque pointer the contained instance, if any.

◆ emplace()

template<typename Type , typename... Args>

void entt::meta_any::emplace ( Args &&... args )

inline

Replaces the contained object by initializing a new instance directly.

Template Parameters

Type	Type of object to use to initialize the container.
Args	Types of arguments to use to construct the new instance.

Parameters

args	Parameters to use to construct the instance.

◆ operator bool()

entt::meta_any::operator bool ( ) const

inlineexplicit

Returns false if a container is empty, true otherwise.

Returns: False if the container is empty, true otherwise.

◆ operator=() [1/3]

template<typename Type , typename = std::enable_if_t<!std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, meta_any>>>

meta_any& entt::meta_any::operator= ( Type && type )

inline

Assignment operator.

Template Parameters

Type	Type of object to use to initialize the container.

Parameters

type	An instance of an object to use to initialize the container.

Returns: This meta any object.

◆ operator=() [2/3]

meta_any& entt::meta_any::operator= ( const meta_any & other )

inline

Copy assignment operator.

Parameters

other The instance to assign.

Returns: This meta any object.

◆ operator=() [3/3]

meta_any& entt::meta_any::operator= ( meta_any && other )

inline

Move assignment operator.

Parameters

other The instance to assign.

Returns: This meta any object.

◆ operator==()

bool entt::meta_any::operator== ( const meta_any & other ) const

inline

Checks if two containers differ in their content.

Parameters

other Container with which to compare.

Returns: False if the two containers differ in their content, true otherwise.

◆ try_cast() [1/2]

template<typename Type >

const Type* entt::meta_any::try_cast ( ) const

inline

Tries to cast an instance to a given type.

Template Parameters

Type	Type to which to cast the instance.

Returns: A (possibly null) pointer to the contained instance.

◆ try_cast() [2/2]

template<typename Type >

Type* entt::meta_any::try_cast ( )

inline

Tries to cast an instance to a given type.

Template Parameters

Type	Type to which to cast the instance.

Returns: A (possibly null) pointer to the contained instance.

◆ type()

meta_type entt::meta_any::type ( ) const

inline

Returns the meta type of the underlying object.

Returns: The meta type of the underlying object, if any.

Friends And Related Function Documentation

◆ meta_handle

friend class meta_handle

friend

A meta handle is allowed to inherit from a meta any.

◆ swap

void swap	(	meta_any &	lhs,
		meta_any &	rhs
	)

friend

Swaps two meta any objects.

Parameters

lhs	A valid meta any object.
rhs	A valid meta any object.

The documentation for this class was generated from the following file:

D:/CadworkJobs/Softwareprojekte/Lexocad/V27.0/lexocad/Base/include/Base/entt.hpp

Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ meta_any() [1/7]

◆ meta_any() [2/7]

◆ meta_any() [3/7]

◆ meta_any() [4/7]

◆ meta_any() [5/7]

◆ meta_any() [6/7]

◆ meta_any() [7/7]

◆ ~meta_any()

Member Function Documentation

◆ cast() [1/2]

◆ cast() [2/2]

◆ convert() [1/2]

◆ convert() [2/2]

◆ data() [1/2]

◆ data() [2/2]

◆ emplace()

◆ operator bool()

◆ operator=() [1/3]

◆ operator=() [2/3]

◆ operator=() [3/3]

◆ operator==()

◆ try_cast() [1/2]

◆ try_cast() [2/2]

◆ type()

Friends And Related Function Documentation

◆ meta_handle

◆ swap