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Teuchos_ConstNonconstObjectContainer.hpp
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41 
42 #ifndef TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP
43 #define TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP
44 
45 #include "Teuchos_RCP.hpp"
46 
47 
48 namespace Teuchos {
49 
50 
274 template<class ObjType>
276 public:
279  :constObj_(null),isConst_(true) {}
282  { initialize(obj); }
285  { initialize(obj); }
288  void initialize( const RCP<ObjType> &obj )
289  {
291  constObj_ = obj;
292  isConst_ = false;
293  }
296  void initialize( const RCP<const ObjType> &obj )
297  {
299  constObj_ = obj;
300  isConst_ = true;
301  }
304  { constObj_=null; isConst_=true; }
307  { uninitialize(); return *this; }
309  bool isConst() const
310  { return isConst_; }
326  {
329  "Error, the object of reference type \""<<TypeNameTraits<ObjType>::name()
330  <<"\" was given as a const-only object and non-const access is not allowed."
331  );
332  return rcp_const_cast<ObjType>(constObj_);
333  }
340  { return constObj_; }
343  { return getConstObj(); }
350  const ObjType* operator->() const
351  { return &*getConstObj(); } // Does assert also!
358  const ObjType& operator*() const
359  { return *getConstObj(); }
361  operator RCP<const ObjType>() const
362  { return getConstObj(); }
364  int count() const
365  { return constObj_.count(); }
366 
367 private:
369  bool isConst_;
370 };
371 
372 
377 template<class T>
379 { return is_null(p.getConstObj()); }
380 
381 
386 template<class T>
388 { return nonnull(p.getConstObj()); }
389 
390 
391 } // namespace Teuchos
392 
393 
394 #endif // TEUCHOS_CONST_NONCONST_OBJECT_CONTAINER_HPP
Null reference error exception class.
bool nonnull(const std::shared_ptr< T > &p)
Returns true if p.get()!=NULL.
bool is_null(const std::shared_ptr< T > &p)
Returns true if p.get()==NULL.
void initialize(const RCP< ObjType > &obj)
. Initialize using a non-const object. Allows both const and non-const access to the contained object...
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
Macro for throwing an exception with breakpointing to ease debugging.
ConstNonconstObjectContainer(const RCP< ObjType > &obj)
. Calls initialize() with a non-const object.
bool isConst() const
Returns true if const-only access to the object is allowed.
T * get() const
Get the raw C++ pointer to the underlying object.
ENull
Used to initialize a RCP object to NULL using an implicit conversion!
TEUCHOS_DEPRECATED int count() const
Returns strong_count() [deprecated].
ConstNonconstObjectContainer(const RCP< const ObjType > &obj)
. Calls initialize() with a const object.
RCP< const ObjType > getConstObj() const
Get an RCP to the const contained object.
void initialize(const RCP< const ObjType > &obj)
. Initialize using a const object. Allows only const access enforced with a runtime check...
const ObjType * operator->() const
Pointer (-&gt;) access to underlying const object.
ConstNonconstObjectContainer< ObjType > & operator=(ENull)
bool nonnull(const ConstNonconstObjectContainer< T > &p)
Returns true if p.get()!=NULL.
bool is_null(const ConstNonconstObjectContainer< T > &p)
Returns true if p.get()==NULL.
Simple class supporting the &quot;runtime protection of const&quot; idiom.
Smart reference counting pointer class for automatic garbage collection.
RCP< ObjType > getNonconstObj() const
Get an RCP to the non-const contained object.
RCP< const ObjType > operator()() const
Perform shorthand for getConstObj().
Reference-counted pointer class and non-member templated function implementations.
const ObjType & operator*() const
Dereference the underlying object.
Null reference error exception class.