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Public Types | Public Member Functions | List of all members
juce::ReferenceCountedObjectPtr< ObjectType > Class Template Reference

A smart-pointer class which points to a reference-counted object. More...

#include "juce_ReferenceCountedObject.h"

Public Types

using ReferencedType = ObjectType
 The class being referenced by this pointer.
 

Public Member Functions

 ReferenceCountedObjectPtr ()=default
 Creates a pointer to a null object.
 
 ReferenceCountedObjectPtr (decltype(nullptr)) noexcept
 Creates a pointer to a null object.
 
 ReferenceCountedObjectPtr (ReferencedType *refCountedObject) noexcept
 Creates a pointer to an object.
 
 ReferenceCountedObjectPtr (ReferencedType &refCountedObject) noexcept
 Creates a pointer to an object.
 
 ReferenceCountedObjectPtr (const ReferenceCountedObjectPtr &other) noexcept
 Copies another pointer.
 
 ReferenceCountedObjectPtr (ReferenceCountedObjectPtr &&other) noexcept
 Takes-over the object from another pointer.
 
template<typename Convertible >
 ReferenceCountedObjectPtr (const ReferenceCountedObjectPtr< Convertible > &other) noexcept
 Copies another pointer.
 
ReferenceCountedObjectPtroperator= (const ReferenceCountedObjectPtr &other)
 Changes this pointer to point at a different object.
 
template<typename Convertible >
ReferenceCountedObjectPtroperator= (const ReferenceCountedObjectPtr< Convertible > &other)
 Changes this pointer to point at a different object.
 
ReferenceCountedObjectPtroperator= (ReferencedType *newObject)
 Changes this pointer to point at a different object.
 
ReferenceCountedObjectPtroperator= (ReferencedType &newObject)
 Changes this pointer to point at a different object.
 
ReferenceCountedObjectPtroperator= (decltype(nullptr))
 Resets this pointer to a null pointer.
 
ReferenceCountedObjectPtroperator= (ReferenceCountedObjectPtr &&other) noexcept
 Takes-over the object from another pointer.
 
 ~ReferenceCountedObjectPtr ()
 Destructor.
 
ReferencedTypeget () const noexcept
 Returns the object that this pointer references.
 
void reset () noexcept
 Resets this object to a null pointer.
 
ReferencedTypeoperator-> () const noexcept
 
ReferencedTypeoperator* () const noexcept
 Dereferences the object that this pointer references.
 
bool operator== (decltype(nullptr)) const noexcept
 Checks whether this pointer is null.
 
bool operator!= (decltype(nullptr)) const noexcept
 Checks whether this pointer is null.
 
bool operator== (const ObjectType *other) const noexcept
 Compares two ReferenceCountedObjectPtrs.
 
bool operator== (const ReferenceCountedObjectPtr &other) const noexcept
 Compares two ReferenceCountedObjectPtrs.
 
bool operator!= (const ObjectType *other) const noexcept
 Compares two ReferenceCountedObjectPtrs.
 
bool operator!= (const ReferenceCountedObjectPtr &other) const noexcept
 Compares two ReferenceCountedObjectPtrs.
 
 operator ReferencedType * () const noexcept
 Returns the object that this pointer references.
 

Detailed Description

template<class ObjectType>
class juce::ReferenceCountedObjectPtr< ObjectType >

A smart-pointer class which points to a reference-counted object.

The template parameter specifies the class of the object you want to point to - the easiest way to make a class reference-countable is to simply make it inherit from ReferenceCountedObject or SingleThreadedReferenceCountedObject, but if you need to, you can roll your own reference-countable class by implementing a set of methods called incReferenceCount(), decReferenceCount(), and decReferenceCountWithoutDeleting(). See ReferenceCountedObject for examples of how these methods should behave.

When using this class, you'll probably want to create a typedef to abbreviate the full templated name - e.g.

{
...
}
A smart-pointer class which points to a reference-counted object.
A base class which provides methods for reference-counting.
Type unalignedPointerCast(void *ptr) noexcept
Casts a pointer to another type via void*, which suppresses the cast-align warning which sometimes ar...
Definition juce_Memory.h:88
See also
ReferenceCountedObject, ReferenceCountedObjectArray

@tags{Core}

Definition at line 246 of file juce_ReferenceCountedObject.h.

Member Typedef Documentation

◆ ReferencedType

The class being referenced by this pointer.

Definition at line 250 of file juce_ReferenceCountedObject.h.

Constructor & Destructor Documentation

◆ ReferenceCountedObjectPtr() [1/6]

template<class ObjectType >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( decltype(nullptr )
noexcept

Creates a pointer to a null object.

Definition at line 257 of file juce_ReferenceCountedObject.h.

◆ ReferenceCountedObjectPtr() [2/6]

template<class ObjectType >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( ReferencedType refCountedObject)
noexcept

Creates a pointer to an object.

This will increment the object's reference-count.

Definition at line 262 of file juce_ReferenceCountedObject.h.

◆ ReferenceCountedObjectPtr() [3/6]

template<class ObjectType >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( ReferencedType refCountedObject)
noexcept

Creates a pointer to an object.

This will increment the object's reference-count.

Definition at line 271 of file juce_ReferenceCountedObject.h.

◆ ReferenceCountedObjectPtr() [4/6]

template<class ObjectType >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( const ReferenceCountedObjectPtr< ObjectType > &  other)
noexcept

Copies another pointer.

This will increment the object's reference-count.

Definition at line 280 of file juce_ReferenceCountedObject.h.

◆ ReferenceCountedObjectPtr() [5/6]

template<class ObjectType >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( ReferenceCountedObjectPtr< ObjectType > &&  other)
noexcept

Takes-over the object from another pointer.

Definition at line 287 of file juce_ReferenceCountedObject.h.

◆ ReferenceCountedObjectPtr() [6/6]

template<class ObjectType >
template<typename Convertible >
juce::ReferenceCountedObjectPtr< ObjectType >::ReferenceCountedObjectPtr ( const ReferenceCountedObjectPtr< Convertible > &  other)
noexcept

Copies another pointer.

This will increment the object's reference-count (if it is non-null).

Definition at line 297 of file juce_ReferenceCountedObject.h.

◆ ~ReferenceCountedObjectPtr()

Destructor.

This will decrement the object's reference-count, which will cause the object to be deleted when the ref-count hits zero.

Definition at line 372 of file juce_ReferenceCountedObject.h.

Member Function Documentation

◆ get()

Returns the object that this pointer references.

The pointer returned may be null, of course.

Definition at line 381 of file juce_ReferenceCountedObject.h.

◆ operator ReferencedType *()

Returns the object that this pointer references.

The pointer returned may be null, of course. Note that this methods allows the compiler to be very lenient with what it allows you to do with the pointer, it's safer to disable this by setting JUCE_STRICT_REFCOUNTEDPOINTER=1, which increased type safety and can prevent some common slip-ups.

Definition at line 428 of file juce_ReferenceCountedObject.h.

◆ operator!=() [1/3]

template<class ObjectType >
bool juce::ReferenceCountedObjectPtr< ObjectType >::operator!= ( const ObjectType other) const
noexcept

Compares two ReferenceCountedObjectPtrs.

Definition at line 413 of file juce_ReferenceCountedObject.h.

◆ operator!=() [2/3]

Compares two ReferenceCountedObjectPtrs.

Definition at line 415 of file juce_ReferenceCountedObject.h.

◆ operator!=() [3/3]

template<class ObjectType >
bool juce::ReferenceCountedObjectPtr< ObjectType >::operator!= ( decltype(nullptr ) const
noexcept

Checks whether this pointer is null.

Definition at line 406 of file juce_ReferenceCountedObject.h.

◆ operator*()

Dereferences the object that this pointer references.

The pointer returned may be null, of course.

Definition at line 401 of file juce_ReferenceCountedObject.h.

◆ operator->()

Definition at line 392 of file juce_ReferenceCountedObject.h.

◆ operator=() [1/6]

Changes this pointer to point at a different object.

The reference count of the old object is decremented, and it might be deleted if it hits zero. The new object's count is incremented.

Definition at line 307 of file juce_ReferenceCountedObject.h.

◆ operator=() [2/6]

Changes this pointer to point at a different object.

The reference count of the old object is decremented, and it might be deleted if it hits zero. The new object's count is incremented.

Definition at line 317 of file juce_ReferenceCountedObject.h.

◆ operator=() [3/6]

Resets this pointer to a null pointer.

Definition at line 355 of file juce_ReferenceCountedObject.h.

◆ operator=() [4/6]

Takes-over the object from another pointer.

Definition at line 362 of file juce_ReferenceCountedObject.h.

◆ operator=() [5/6]

Changes this pointer to point at a different object.

The reference count of the old object is decremented, and it might be deleted if it hits zero. The new object's count is incremented.

Definition at line 341 of file juce_ReferenceCountedObject.h.

◆ operator=() [6/6]

Changes this pointer to point at a different object.

The reference count of the old object is decremented, and it might be deleted if it hits zero. The new object's count is incremented.

Definition at line 327 of file juce_ReferenceCountedObject.h.

◆ operator==() [1/3]

Compares two ReferenceCountedObjectPtrs.

Definition at line 409 of file juce_ReferenceCountedObject.h.

◆ operator==() [2/3]

Compares two ReferenceCountedObjectPtrs.

Definition at line 411 of file juce_ReferenceCountedObject.h.

◆ operator==() [3/3]

Checks whether this pointer is null.

Definition at line 404 of file juce_ReferenceCountedObject.h.

◆ reset()

template<class ObjectType >
void juce::ReferenceCountedObjectPtr< ObjectType >::reset ( )
noexcept

Resets this object to a null pointer.

Definition at line 384 of file juce_ReferenceCountedObject.h.


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