Wizt::VTypedValueBase< Type > Class Template Reference

Base class for values with type. More...

#include <ocean/plankton/VValue.hpp>

Inheritance diagram for Wizt::VTypedValueBase< Type >:

Public Member Functions
RefPtr< ChunkBase >	getChunk (size_t N) const override
	Create an array of type instances filled with values of the given count.
const type_info &	getType () const override
	Implement the type information function.
virtual bool	getValue (Type &Variable) const =0
	Abstract interface to set the value of a variable from the type stored here.
bool	isDifferentFrom (const WeakPtr< VValueBase, VValueBase > &V) const override
	Implement the comparison function from the VValueBase class utilizing the VValueCompareTrait type trait class.
	VTypedValueBase ()
	Default Constructor.
	VTypedValueBase (const Ageable &A, const VTypedValueBase &V)
	Copy constructor, takes care of exported members.
Public Member Functions inherited from Wizt::VValueBase
virtual const Ageable &	age () const =0
	Constant read-only version to the age.
virtual Ageable &	age ()=0
	Return the age of this value, i.e.
VValueBasePtr_t	component (const string &name) const
	Retrieve a certain component from a compound value.
virtual VValueBasePtr_t	copy () const =0
	Create a copy by value of this data variable.
int	copyComponents (const VValueBase &ValueSource)
	Copy the components from another VValueBase.
virtual WeakPtr< InterfaceBase >	getInterface () const
	In case this value refers to the interface of some VObject, then this function may return such.
virtual WeakPtr< VValueCreator >	getValueCreator () const =0
	Return the associated value creator.
virtual bool	getValueFrom (const WeakVValueBasePtr_t &V)=0
	Copy or cast a value from a possibly compatible type.
int	iterate (ComponentIterator &CI) const
	Find out which components are contained in the certain compound type.
size_t	nComponents () const
	How many components are available here?
bool	operator!= (const VValueBase &V) const
	Test for inequality.
bool	operator!= (const WeakPtr< VValueBase, VValueBase > &V) const
	Compare for equality with a value.
bool	operator== (const VValueBase &V) const
	Test for equality.
virtual bool	setSource (const WeakPtr< VManagedObject > &Owner)
	For special values which refer to the interface of another object, this function may allow to set another source for referencing such an interface.
virtual bool	setValueFromText (const string &s)=0
	Generic interface to set a value from a text.
virtual RefPtr< VManagedObject >	source ()=0
	This value might be related to some other object and for instance be part of a structure instead of a variable by its own.
virtual string	Text () const =0
	Convert the value into some text, which is interpretable via setValueFromText().
	VValueBase ()
	Default Constructor.
	VValueBase (const VValueBase &)
	Copy Constructor.
	~VValueBase ()
	Destructor.
Public Member Functions inherited from MemCore::ReferenceBase< VValueBase >
auto	getObjectCountID () const noexcept
	Get a unique ID for this object in the given domain.
bool	isIdentical (const WeakPtr< VValueBase, VValueBase > &PossibleSelf) const noexcept
	Check if this object is identical to the one used by the given pointer.
void	mkAutoDestructive ()
	Marks this object as being automatically destructed, e.g.
refcount_t	refcount () const noexcept
	The strong reference count.
	ReferenceBase (VValueBase *that) noexcept
	Constructor, initializes reference counter to zero.
const auto &	self () const
	Return weak pointer to the object self.
refcount_t	wrefcount () const noexcept
	The weak reference count.

Additional Inherited Members
Public Types inherited from MemCore::ReferenceBase< VValueBase >
using	reference_domain_t = VValueBase
	The type of the base class.
using	SelfPtr_t = WeakPtr< VValueBase, VValueBase >
	Type for a pointer to this object itself.
Protected Member Functions inherited from MemCore::ReferenceBase< VValueBase >
virtual void	extremeUnction ()
	A virtual function that will be called just before the object is destroyed.
ReferenceBase &	operator= (const ReferenceBase &R)
	Protected assignment operator (should not be called).
void	suicide ()
	Delete this.
virtual	~ReferenceBase ()
	Virtual destructor.

Detailed Description

template<class Type>
class Wizt::VTypedValueBase< Type >

Base class for values with type.

It does not yet specify a storage place but allows reading and setting a typed value. Procedural value types may be derived from this base class. For storing a specific type, use child class VValue<Type>.

Todo:

Consider whether this shouldn't better be an interface. Then, a certain type may implement multiple type conversions, e.g. from float to int.