Duck-typed objects. More...

#include <cc/MetaObject>

Inheritance diagram for MetaObject:

Classes
struct	State
	Internal state. More...

Public Member Functions
	MetaObject ()=default
	Create a null meta-object.

	MetaObject (const String &className)
	Create meta-object of class className.

String	className () const
	Class name

List< MetaObject > &	children ()
	List of children

const List< MetaObject > &	children () const
	Constant list of children

Map< String, Variant > &	members ()
	Key-value map of object properties

const Map< String, Variant > &	members () const
	Constant key-value map of object properties

bool	insert (const String &name, const Variant &value)
	Convenience method to add a new member.

void	establish (const String &name, const Variant &value)
	Convenience method to establish a new member.

bool	contains (const String &name) const
	Convenience method to check if a member of name exists.

bool	lookup (const String &name, Out< Variant > value) const
	Convenience method to lookup the value of member name.

Variant	operator() (const String &name) const
	Convenience method to get the value of member name

Variant &	operator() (const String &name)
	Convenience method to get/set the value of member name

long	count () const
	Convenience method to get the number of children

const MetaObject &	operator[] (long index) const
	Convenience method to get the child at index

MetaObject &	operator[] (long index)
	Convenience method to get the child at index

MetaObject	produce () const
	Produce a meta-object using this meta-object as blueprint

void	autocomplete (InOut< MetaObject > target) const
	Add all members of this meta-object to target, which are missing in target and also append all children of this meta-object to target

MetaObject	clone () const
	Create clone of this meta-object.

void	realize ()
	Realize a new object after deserialization.

bool	operator== (const MetaObject &other) const
	Compare for equality with other.

Public Member Functions inherited from Object
	Object ()=default
	Create a null object.

	operator bool () const
	Check if this is a non-null object.

bool	isNull () const
	Check if this is a null object.

template<class T >
bool	is () const
	Check if this object is of type T.

template<class T >
T	as () const
	Cast this object to type T.

bool	isWeak () const
	Check if the underlying object reference is weak.

bool	operator== (const Object &other) const
	Equality operator.

std::strong_ordering	operator<=> (const Object &other) const
	Ordering operator.

long	useCount () const
	Reference count.

Protected Member Functions
	MetaObject (State *newState)
	Initialize internal state.

State &	me ()

const State &	me () const

Protected Member Functions inherited from Object
template<class T >
T	weak () const

template<class T >
void	initOnce ()
	Create the object state when called the first time.

template<class T >
void	initOncePerThread ()
	Create a distinct object state for each thread when called the first time in that thread.

	Object (State *newState)
	Initialize object with newState.

	Object (State *state, Alias)

	Object (State *state, Weak)

Object &	operator= (std::nullptr_t)

Additional Inherited Members
Static Protected Member Functions inherited from Object
template<class T >
static T	alias (const State *state)
	Create an alias object for the given state.

template<class T >
static T	weak (const State *state)

Protected Attributes inherited from Object
Handle< State >	me
	Internal object state

Detailed Description

Duck-typed objects.

Constructor & Destructor Documentation

◆ MetaObject() [1/3]

MetaObject ( )

default

Create a null meta-object.

◆ MetaObject() [2/3]

MetaObject ( const String & className )

explicit

Create meta-object of class className.

◆ MetaObject() [3/3]

MetaObject ( State * newState )

explicitprotected

Initialize internal state.

Member Function Documentation

◆ className()

String className ( ) const

Class name

◆ children() [1/2]

List< MetaObject > & children ( )

List of children

◆ children() [2/2]

const List< MetaObject > & children ( ) const

Constant list of children

◆ members() [1/2]

Map< String, Variant > & members ( )

Key-value map of object properties

◆ members() [2/2]

const Map< String, Variant > & members ( ) const

Constant key-value map of object properties

◆ insert()

bool insert	(	const String &	name,
		const Variant &	value )

Convenience method to add a new member.

◆ establish()

void establish	(	const String &	name,
		const Variant &	value )

Convenience method to establish a new member.

◆ contains()

bool contains ( const String & name ) const

Convenience method to check if a member of name exists.

◆ lookup()

bool lookup	(	const String &	name,
		Out< Variant >	value ) const

Convenience method to lookup the value of member name.

◆ operator()() [1/2]

Variant operator() ( const String & name ) const

Convenience method to get the value of member name

◆ operator()() [2/2]

Variant & operator() ( const String & name )

Convenience method to get/set the value of member name

◆ count()

long count ( ) const

Convenience method to get the number of children

◆ operator[]() [1/2]

const MetaObject & operator[] ( long index ) const

Convenience method to get the child at index

◆ operator[]() [2/2]

MetaObject & operator[] ( long index )

Convenience method to get the child at index

◆ produce()

MetaObject produce ( ) const

Produce a meta-object using this meta-object as blueprint

◆ autocomplete()

void autocomplete ( InOut< MetaObject > target ) const

Add all members of this meta-object to target, which are missing in target and also append all children of this meta-object to target

◆ clone()

MetaObject clone ( ) const

Create clone of this meta-object.

◆ realize()

void realize ( )

Realize a new object after deserialization.

Exceptions

MetaError

◆ operator==()

bool operator== ( const MetaObject & other ) const

Compare for equality with other.

Classes

Public Member Functions

Protected Member Functions

Additional Inherited Members