meta::handle Class Reference

Meta handle object. More...

#include <meta.hpp>

Public Member Functions
	handle () noexcept
	Default constructor.
	handle (any &any) noexcept
	Constructs a meta handle from a meta any object. More...
template<typename Type , typename = std::enable_if_t<!std::is_same_v<std::remove_cv_t<std::remove_reference_t<Type>>, handle>>>
	handle (Type &obj) noexcept
	Constructs a meta handle from a given instance. More...
meta::type	type () const noexcept
	Returns the meta type of the underlying object. More...
const void *	data () const noexcept
	Returns an opaque pointer to the contained instance. More...
void *	data () noexcept
	Returns an opaque pointer to the contained instance. More...
	operator bool () const noexcept
	Returns false if a handle is empty, true otherwise. More...

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

Detailed Description

Meta handle object.

A meta handle is an opaque pointer to an instance of any type.

A handle doesn't perform copies and isn't responsible for the contained object. It doesn't prolong the lifetime of the pointed instance. Users are responsible for ensuring that the target object remains alive for the entire interval of use of the handle.

Definition at line 675 of file meta.hpp.

Constructor & Destructor Documentation

handle() [1/2]

meta::handle::handle ( any &  any )

inlinenoexcept

Constructs a meta handle from a meta any object.

Parameters

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

Definition at line 690 of file meta.hpp.

handle() [2/2]

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

meta::handle::handle ( Type &  obj )

inlinenoexcept

Constructs a meta handle from a given instance.

Template Parameters

Type	Type of object to use to initialize the handle.

Parameters

obj	A reference to an object to use to initialize the handle.

Definition at line 701 of file meta.hpp.

Member Function Documentation

data() [1/2]

const void* meta::handle::data ( ) const

inlinenoexcept

Returns an opaque pointer to the contained instance.

Returns

An opaque pointer the contained instance, if any.

Definition at line 716 of file meta.hpp.

data() [2/2]

void* meta::handle::data ( )

inlinenoexcept

Returns an opaque pointer to the contained instance.

Returns

An opaque pointer the contained instance, if any.

Definition at line 721 of file meta.hpp.

operator bool()

meta::handle::operator bool ( ) const

inlineexplicitnoexcept

Returns false if a handle is empty, true otherwise.

Returns

False if the handle is empty, true otherwise.

Definition at line 729 of file meta.hpp.

type()

meta::type meta::handle::type ( ) const

inlinenoexcept

Returns the meta type of the underlying object.

Returns

The meta type of the underlying object, if any.

Definition at line 1955 of file meta.hpp.

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

• src/meta/meta.hpp