CodePorting.Translator.Cs2Cpp.Framework
System::WeakReference< T > Class Template Reference

Represents a weak reference, which references an object while still allowing that object to be deleted. More...

#include <weak_reference.h>

Inherits System::Object.

Public Member Functions

 WeakReference ()
 Default constructor. More...
 
 WeakReference (std::nullptr_t)
 Constructor from nullptr. More...
 
 WeakReference (const SmartPtr< T > &data)
 Initializes a new instance of the WeakReference class, referencing the specified object. More...
 
 WeakReference (const SmartPtr< T > &data, bool trackResurrection)
 Initializes a new instance of the WeakReference class, referencing the specified object. More...
 
bool TryGetTarget (const SmartPtr< T > &data) const
 Gets the object (the target) referenced by the current WeakReference object. More...
 
void SetTarget (const SmartPtr< T > &data)
 Sets the object (the target) referenced by the current WeakReference object. More...
 
void reset ()
 
bool operator== (std::nullptr_t) const
 Checks if referenced object is null. More...
 
bool operator!= (std::nullptr_t) const
 Checks if referenced object is not null. More...
 
bool operator== (const WeakReference< T > &other) const
 Compares referenced object to another instance WeakReference class. More...
 
bool operator!= (const WeakReference< T > &other) const
 Compares referenced object to another instance WeakReference class. More...
 
- Public Member Functions inherited from System::Object
 Object ()
 Creates object. Initializes all internal data structures. More...
 
virtual ~Object ()
 Destroys object. Frees all internal data structures. More...
 
 Object (Object const &x)
 Copy constructor. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
Objectoperator= (Object const &x)
 Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
ObjectSharedRefAdded ()
 Increments shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int SharedRefRemovedSafe ()
 Decrements and returns shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int RemovedSharedRefs (int count)
 Decreases shared reference count by specified value. More...
 
Detail::SmartPtrCounter * WeakRefAdded ()
 Increments weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
void WeakRefRemoved ()
 Decrements weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
Detail::SmartPtrCounter * GetCounter ()
 Gets reference counter data structure associated with the object. More...
 
int SharedCount () const
 Gets current value of shared reference counter. More...
 
void Lock ()
 Implements C# lock() statement locking. Call directly or use LockContext sentry object. More...
 
void Unlock ()
 Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. More...
 
virtual bool Equals (ptr obj)
 Compares objects using C# Object.Equals semantics. More...
 
virtual int32_t GetHashCode () const
 Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. More...
 
virtual String ToString () const
 Analog of C# Object.ToString() method. Enables converting custom objects to string. More...
 
virtual ptr MemberwiseClone () const
 Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. More...
 
virtual const TypeInfoGetType () const
 Gets actual type of object. Analog of C# System.Object.GetType() call. More...
 
virtual bool Is (const TypeInfo &targetType) const
 Check if object represents an instance of type described by targetType. Analog of C# 'is' operator. More...
 
virtual void SetTemplateWeakPtr (uint32_t argument)
 Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. More...
 
virtual bool FastCast (const Details::FastRttiBase &helper, void **out_ptr) const
 For internal purposes only. More...
 
template<>
bool ReferenceEquals (String const &str, std::nullptr_t)
 Specialization of Object::ReferenceEquals for case of string and nullptr. More...
 
template<>
bool ReferenceEquals (String const &str1, String const &str2)
 Specialization of Object::ReferenceEquals for case of strings. More...
 

Protected Attributes

WeakPtr< T > wptr
 

Additional Inherited Members

- Public Types inherited from System::Object
typedef SmartPtr< Objectptr
 Alias for smart pointer type. More...
 
- Static Public Member Functions inherited from System::Object
static bool ReferenceEquals (ptr const &objA, ptr const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, T const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, std::nullptr_t)
 Reference-compares value type object with nullptr. More...
 
template<typename T1 , typename T2 >
static std::enable_if< IsSmartPtr< T1 >::value &&IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares reference type objects in C# style. More...
 
template<typename T1 , typename T2 >
static std::enable_if<!IsSmartPtr< T1 >::value &&!IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares value type objects in C# style. More...
 
static const TypeInfoType ()
 Implements C# typeof(System.Object) construct. More...
 
template<>
bool Equals (float const &objA, float const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 
template<>
bool Equals (double const &objA, double const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 

Detailed Description

template<typename T>
class System::WeakReference< T >

Represents a weak reference, which references an object while still allowing that object to be deleted.

Template Parameters
TType of a referenced object.

Constructor & Destructor Documentation

◆ WeakReference() [1/4]

template<typename T >
System::WeakReference< T >::WeakReference ( )
inline

Default constructor.

◆ WeakReference() [2/4]

template<typename T >
System::WeakReference< T >::WeakReference ( std::nullptr_t  )
inline

Constructor from nullptr.

◆ WeakReference() [3/4]

template<typename T >
System::WeakReference< T >::WeakReference ( const SmartPtr< T > &  data)
inline

Initializes a new instance of the WeakReference class, referencing the specified object.

Parameters
dataObject to store.

◆ WeakReference() [4/4]

template<typename T >
System::WeakReference< T >::WeakReference ( const SmartPtr< T > &  data,
bool  trackResurrection 
)
inline

Initializes a new instance of the WeakReference class, referencing the specified object.

Parameters
dataObject to store.
trackResurrectionIgnored.

Member Function Documentation

◆ operator!=() [1/2]

template<typename T >
bool System::WeakReference< T >::operator!= ( const WeakReference< T > &  other) const
inline

Compares referenced object to another instance WeakReference class.

Parameters
otherObject compare to.
Returns
True if compared objects reference different objects, false if objects are same.

◆ operator!=() [2/2]

template<typename T >
bool System::WeakReference< T >::operator!= ( std::nullptr_t  ) const
inline

Checks if referenced object is not null.

Returns
True if referenced object is not null, false otherwise.

◆ operator==() [1/2]

template<typename T >
bool System::WeakReference< T >::operator== ( const WeakReference< T > &  other) const
inline

Compares referenced object to another instance WeakReference class.

Parameters
otherObject compare to.
Returns
True if compared objects reference the same object, false otherwise.

◆ operator==() [2/2]

template<typename T >
bool System::WeakReference< T >::operator== ( std::nullptr_t  ) const
inline

Checks if referenced object is null.

Returns
True if referenced object is null, false otherwise.

◆ reset()

template<typename T >
void System::WeakReference< T >::reset ( )
inline

◆ SetTarget()

template<typename T >
void System::WeakReference< T >::SetTarget ( const SmartPtr< T > &  data)
inline

Sets the object (the target) referenced by the current WeakReference object.

Parameters
dataObject to set.

◆ TryGetTarget()

template<typename T >
bool System::WeakReference< T >::TryGetTarget ( const SmartPtr< T > &  data) const
inline

Gets the object (the target) referenced by the current WeakReference object.

Parameters
dataObject referenced by the current WeakReference object.
Returns
True if an operation succeded, false otherwise.

Member Data Documentation

◆ wptr

template<typename T >
WeakPtr<T> System::WeakReference< T >::wptr
protected