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System::Collections::Generic::ReverseEnumerator< Container, Element > Class Template Reference

Enumerator that reverse-iterates through container. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument. More...

Inherits System::Collections::Generic::IEnumerator< typename Container::value_type >.

Public Member Functions

 ReverseEnumerator (Object::ptr owner, Container &cont)
 Initializes iterator. More...
 
virtual ~ReverseEnumerator ()
 Destructor. More...
 
bool IsValid () const
 Checks whether MoveNext() was called and end was not reached. More...
 
bool MoveNext () override
 Enumerator-style increment. More...
 
virtual MakeConstRef_t< Element > get_Current () const override
 Gets 'current' element. More...
 
void Reset () override
 Resets enumerator to allow re-enumerating elements. More...
 
- Public Member Functions inherited from System::Collections::Generic::IEnumerator< typename Container::value_type >
 IEnumerator ()
 
virtual ~IEnumerator ()
 
virtual MakeConstRef_t< typename Container::value_type > Current () const
 Gets current element. More...
 
void InitializeIterator () override
 Does the first MoveNext() call and prepares the enumerator object to be used by VirtualizedIterator. More...
 
void IncrementIterator () override
 Moves the iterator step forward. More...
 
System::Details::VirtualizedIteratorBase< typename Container::value_type > * CloneIterator () const override
 Clones current iterator. More...
 
IEnumeratorAsVirtualizedIterator ()
 Prepares the iterator to be used by the VirtualizedIterator class. More...
 
void MarkOwnedByVirtualizedIterator ()
 Marks the enumerator owned by virtualized iterator. More...
 
- Public Member Functions inherited from System::IDisposable
virtual void Dispose ()
 Does nothing. 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

Object::ptr m_owner
 Pointer to owner container object to make sure it is not deleted before enumerator is. More...
 
Container & m_data
 Container inner data structure reference. More...
 
Container::reverse_iterator m_it
 Actual STL iterator. More...
 
bool m_inited
 Whether MoveNext() was ever called. More...
 
- Protected Attributes inherited from System::Collections::Generic::IEnumerator< typename Container::value_type >
bool m_owned_by_virtualized_iterator
 Whether is owned by VirtualizedIterator. More...
 

Additional Inherited Members

- Public Types inherited from System::Collections::Generic::IEnumerator< typename Container::value_type >
typedef typename Container::value_type ValueType
 Value type. More...
 
- 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...
 
- Protected Member Functions inherited from System::Collections::Generic::IEnumerator< typename Container::value_type >
 IEnumerator (const IEnumerator &other)
 Copy constructor. More...
 

Detailed Description

template<typename Container, typename Element = typename Container::value_type>
class System::Collections::Generic::ReverseEnumerator< Container, Element >

Enumerator that reverse-iterates through container. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.

Template Parameters
ContainerContainer to iterate through.
ElementElement type.

Constructor & Destructor Documentation

◆ ReverseEnumerator()

template<typename Container , typename Element = typename Container::value_type>
System::Collections::Generic::ReverseEnumerator< Container, Element >::ReverseEnumerator ( Object::ptr  owner,
Container &  cont 
)
inline

Initializes iterator.

Parameters
ownerPointer to owner container.
contActual container implementation reference.

◆ ~ReverseEnumerator()

template<typename Container , typename Element = typename Container::value_type>
virtual System::Collections::Generic::ReverseEnumerator< Container, Element >::~ReverseEnumerator ( )
inlinevirtual

Destructor.

Member Function Documentation

◆ get_Current()

template<typename Container , typename Element = typename Container::value_type>
virtual MakeConstRef_t<Element> System::Collections::Generic::ReverseEnumerator< Container, Element >::get_Current ( ) const
inlineoverridevirtual

Gets 'current' element.

Returns
Current element (if any) or default-constructed item otherwise.

Implements System::Collections::Generic::IEnumerator< typename Container::value_type >.

◆ IsValid()

template<typename Container , typename Element = typename Container::value_type>
bool System::Collections::Generic::ReverseEnumerator< Container, Element >::IsValid ( ) const
inline

Checks whether MoveNext() was called and end was not reached.

Returns
false if MoveNext() was not called at all or container end is hit; true otherwise.

◆ MoveNext()

template<typename Container , typename Element = typename Container::value_type>
bool System::Collections::Generic::ReverseEnumerator< Container, Element >::MoveNext ( )
inlineoverridevirtual

Enumerator-style increment.

Returns
true if enumerator points to valid element, false if container end is hit.

Implements System::Collections::Generic::IEnumerator< typename Container::value_type >.

◆ Reset()

template<typename Container , typename Element = typename Container::value_type>
void System::Collections::Generic::ReverseEnumerator< Container, Element >::Reset ( )
inlineoverridevirtual

Resets enumerator to allow re-enumerating elements.

Reimplemented from System::Collections::Generic::IEnumerator< typename Container::value_type >.

Member Data Documentation

◆ m_data

template<typename Container , typename Element = typename Container::value_type>
Container& System::Collections::Generic::ReverseEnumerator< Container, Element >::m_data
protected

Container inner data structure reference.

◆ m_inited

template<typename Container , typename Element = typename Container::value_type>
bool System::Collections::Generic::ReverseEnumerator< Container, Element >::m_inited
protected

Whether MoveNext() was ever called.

◆ m_it

template<typename Container , typename Element = typename Container::value_type>
Container::reverse_iterator System::Collections::Generic::ReverseEnumerator< Container, Element >::m_it
protected

Actual STL iterator.

◆ m_owner

template<typename Container , typename Element = typename Container::value_type>
Object::ptr System::Collections::Generic::ReverseEnumerator< Container, Element >::m_owner
protected

Pointer to owner container object to make sure it is not deleted before enumerator is.