DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType > Class Template Reference

This class adapts any lvalue iterator so that operator* returns a member on the element pointed to by the iterator, instead the element itself. More...

#include <DGtal/base/IteratorAdapter.h>

Inheritance diagram for DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >:

Public Types
typedef IteratorAdapter< TIterator, TFunctor, TReturnType >	Self
typedef boost::transform_iterator< TFunctor, TIterator, TReturnType &, TReturnType >	Parent

Public Member Functions
	IteratorAdapter ()
	IteratorAdapter (const TIterator &iter, TFunctor func)
	IteratorAdapter (const Self &other)
	IteratorAdapter (const Parent &other)
Self &	operator= (const Self &other)
Self &	operator= (const Parent &other)
	~IteratorAdapter ()

Private Member Functions
	BOOST_CONCEPT_ASSERT ((boost_concepts::LvalueIteratorConcept< TIterator >))

Detailed Description

template<typename TIterator, typename TFunctor, typename TReturnType = typename TFunctor::Value>
class DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >

This class adapts any lvalue iterator so that operator* returns a member on the element pointed to by the iterator, instead the element itself.

Description of template class 'IteratorAdapter'

Template Parameters

TIterator

the type of the iterator to adapt

To achieve this goal, the adapter is based on a functor f given at construction so that operator* calls f(*it), instead of calling directly operator* of the underlying iterator it. This operation returns a reference (or constant reference) on a member of the element pointed to by the iterator, which can be read as well as assigned (if the member is not constant).

Template Parameters

TFunctor	the type of functor that transforms the pointed element into another one
TReturnType	the type of the element returned by the underlying functor

Definition at line 76 of file IteratorAdapter.h.

Member Typedef Documentation

Parent

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

typedef boost::transform_iterator< TFunctor, TIterator, TReturnType&, TReturnType > DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::Parent

parent class

Definition at line 87 of file IteratorAdapter.h.

Self

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

typedef IteratorAdapter< TIterator, TFunctor, TReturnType > DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::Self

this class

Definition at line 85 of file IteratorAdapter.h.

Constructor & Destructor Documentation

IteratorAdapter() [1/4]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::IteratorAdapter ( )

inline

Default constructor

Definition at line 92 of file IteratorAdapter.h.

: Parent() {}

IteratorAdapter() [2/4]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::IteratorAdapter ( const TIterator &  iter, TFunctor  func  )

inline

Constructor from an iterator and a functor

Parameters

iter	any iterator
func	any functor

Definition at line 99 of file IteratorAdapter.h.

: Parent(iter,func) {}

IteratorAdapter() [3/4]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::IteratorAdapter ( const Self &  other )

inline

Copy operator

Parameters

other

the object of type Self to copy.

Definition at line 105 of file IteratorAdapter.h.

: Parent( static_cast<const Parent&>(other) ) {}

IteratorAdapter() [4/4]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::IteratorAdapter ( const Parent &  other )

inline

Copy operator

Parameters

other

the object of type Parent to copy.

Definition at line 111 of file IteratorAdapter.h.

: Parent(other) {}

~IteratorAdapter()

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::~IteratorAdapter ( )

inline

Destructor.

Definition at line 140 of file IteratorAdapter.h.

{}

Member Function Documentation

BOOST_CONCEPT_ASSERT()

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::BOOST_CONCEPT_ASSERT ( (boost_concepts::LvalueIteratorConcept< TIterator >)  )

private

operator=() [1/2]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

Self& DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::operator= ( const Parent &  other )

inline

Assignement operator

Parameters

other

the object of type Parent to copy.

Returns

this

Definition at line 130 of file IteratorAdapter.h.

    {
      if (this != &other)
          Parent::operator=(other); 
      return *this; 
    }

operator=() [2/2]

template<typename TIterator , typename TFunctor , typename TReturnType = typename TFunctor::Value>

Self& DGtal::IteratorAdapter< TIterator, TFunctor, TReturnType >::operator= ( const Self &  other )

inline

Assignement operator

Parameters

other

the object of type Self to copy.

Returns

this

Definition at line 118 of file IteratorAdapter.h.

    {
      if (this != &other)
        Parent::operator=( static_cast<const Parent&>(other) ); 
      return *this; 
    } 

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

• IteratorAdapter.h