add vcglib
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#ifndef GLW_BOOKKEEPING_H
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#define GLW_BOOKKEEPING_H
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#include "./common.h"
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namespace glw
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{
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namespace detail
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{
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struct NoType { };
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template <typename T> struct DefaultDeleter { void operator () (T * t) { delete t; } };
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template <typename T> struct BaseOf { typedef NoType Type; };
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template <typename T, typename B> struct RootOfType { typedef typename RootOfType<B, typename BaseOf<B>::Type>::Type Type; };
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template <typename T> struct RootOfType<T, NoType> { typedef T Type; };
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template <typename T> struct RootOf { typedef typename RootOfType<T, typename BaseOf<T>::Type>::Type Type; };
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template <typename T, typename B> struct DeleterOfType { typedef typename DeleterOfType<B, typename BaseOf<B>::Type>::Type Type; };
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template <typename T> struct DeleterOfType<T, NoType> { typedef DefaultDeleter<T> Type; };
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template <typename T> struct DeleterOf { typedef typename DeleterOfType<T, typename BaseOf<T>::Type>::Type Type; };
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template <typename TObject, typename TDeleter, typename TBaseObject>
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class RefCountedObject : public RefCountedObject<TBaseObject, TDeleter, typename BaseOf<TBaseObject>::Type>
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{
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public:
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typedef RefCountedObject<TBaseObject, TDeleter, typename BaseOf<TBaseObject>::Type> BaseType;
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typedef RefCountedObject<TObject, TDeleter, TBaseObject> ThisType;
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typedef TObject ObjectType;
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typedef TDeleter DeleterType;
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typedef TBaseObject BaseObjectType;
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RefCountedObject(ObjectType * object, const DeleterType & deleter)
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: BaseType(object, deleter)
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{
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;
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}
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const ObjectType * object(void) const
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{
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return static_cast<const ObjectType *>(BaseType::object());
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}
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ObjectType * object(void)
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{
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return static_cast<ObjectType *>(BaseType::object());
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}
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};
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template <typename TObject, typename TDeleter>
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class RefCountedObject<TObject, TDeleter, NoType>
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{
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public:
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typedef void BaseType;
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typedef RefCountedObject<TObject, TDeleter, NoType> ThisType;
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typedef TObject ObjectType;
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typedef TDeleter DeleterType;
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typedef NoType BaseObjectType;
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RefCountedObject(ObjectType * object, const DeleterType & deleter)
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: m_object (object)
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, m_refCount (0)
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, m_deleter (deleter)
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{
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GLW_ASSERT(this->m_object != 0);
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}
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~RefCountedObject(void)
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{
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this->destroyObject();
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}
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bool isNull(void) const
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{
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return (this->m_object == 0);
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}
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void setNull(bool deleteObject)
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{
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if (deleteObject)
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{
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this->destroyObject();
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}
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this->m_object = 0;
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}
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const ObjectType * object(void) const
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{
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return this->m_object;
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}
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ObjectType * object(void)
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{
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return this->m_object;
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}
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const DeleterType & deleter(void) const
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{
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return this->m_deleter;
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}
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DeleterType & deleter(void)
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{
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return this->m_deleter;
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}
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void ref(void)
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{
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this->m_refCount++;
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}
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void unref(void)
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{
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GLW_ASSERT(this->m_refCount > 0);
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this->m_refCount--;
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if (this->m_refCount == 0)
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{
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delete this;
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}
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}
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int refCount(void) const
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{
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return this->m_refCount;
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}
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private:
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ObjectType * m_object;
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int m_refCount;
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DeleterType m_deleter;
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RefCountedObject(const ThisType & other);
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ThisType & operator = (const ThisType & other);
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void destroyObject(void)
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{
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if (this->m_object == 0) return;
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this->m_deleter(this->m_object);
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this->m_object = 0;
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}
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};
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template <typename T> struct RefCountedObjectTraits { typedef RefCountedObject<T, typename DeleterOf<T>::Type, typename BaseOf<T>::Type> Type; };
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template <typename TObject, typename TDeleter, typename TBaseObject>
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class ObjectSharedPointer : public ObjectSharedPointer<TBaseObject, TDeleter, typename BaseOf<TBaseObject>::Type>
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{
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public:
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typedef ObjectSharedPointer<TBaseObject, TDeleter, typename BaseOf<TBaseObject>::Type> BaseType;
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typedef ObjectSharedPointer<TObject, TDeleter, TBaseObject> ThisType;
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typedef TObject ObjectType;
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typedef TDeleter DeleterType;
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typedef TBaseObject BaseObjectType;
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typedef RefCountedObject<ObjectType, DeleterType, BaseObjectType> RefCountedObjectType;
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ObjectSharedPointer(void)
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: BaseType()
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{
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;
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}
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ObjectSharedPointer(const ThisType & other)
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: BaseType(other)
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{
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;
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}
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ObjectSharedPointer(RefCountedObjectType * refObject)
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: BaseType(refObject)
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{
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;
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}
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const ObjectType & operator * (void) const
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{
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return (*(this->object()));
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}
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ObjectType & operator * (void)
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{
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return (*(this->object()));
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}
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const ObjectType * operator -> (void) const
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{
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return this->object();
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}
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ObjectType * operator -> (void)
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{
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return this->object();
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}
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protected:
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const ObjectType * object(void) const
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{
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return static_cast<const ObjectType *>(BaseType::object());
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}
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ObjectType * object(void)
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{
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return static_cast<ObjectType *>(BaseType::object());
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}
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RefCountedObjectType * refObject(void) const
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{
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return static_cast<RefCountedObjectType *>(BaseType::refObject());
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}
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};
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template <typename TObject, typename TDeleter>
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class ObjectSharedPointer<TObject, TDeleter, NoType>
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{
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public:
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typedef void BaseType;
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typedef ObjectSharedPointer<TObject, TDeleter, NoType> ThisType;
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typedef TObject ObjectType;
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typedef TDeleter DeleterType;
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typedef NoType BaseObjectType;
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typedef RefCountedObject<ObjectType, DeleterType, NoType> RefCountedObjectType;
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ObjectSharedPointer(void)
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: m_refObject(0)
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{
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;
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}
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ObjectSharedPointer(const ThisType & other)
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: m_refObject(0)
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{
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this->attach(other.refObject());
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}
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ObjectSharedPointer(RefCountedObjectType * refObject)
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: m_refObject(0)
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{
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this->attach(refObject);
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}
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~ObjectSharedPointer(void)
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{
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this->detach();
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}
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bool isNull(void) const
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{
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if (this->m_refObject == 0) return true;
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return this->m_refObject->isNull();
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}
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void setNull(void)
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{
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this->detach();
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}
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const ObjectType & operator * (void) const
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{
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return (*(this->object()));
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}
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ObjectType & operator * (void)
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{
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return (*(this->object()));
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}
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const ObjectType * operator -> (void) const
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{
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return this->object();
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}
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ObjectType * operator -> (void)
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{
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return this->object();
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}
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operator bool (void) const
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{
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return (!this->isNull());
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}
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ThisType & operator = (const ThisType & other)
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{
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this->attach(other.refObject());
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return (*this);
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}
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protected:
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const ObjectType * object(void) const
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{
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GLW_ASSERT(!this->isNull());
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return this->m_refObject->object();
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}
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ObjectType * object(void)
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{
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GLW_ASSERT(!this->isNull());
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return this->m_refObject->object();
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}
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RefCountedObjectType * refObject(void) const
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{
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return this->m_refObject;
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}
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private:
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RefCountedObjectType * m_refObject;
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void attach(RefCountedObjectType * reObject)
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{
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this->detach();
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this->m_refObject = reObject;
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if (this->m_refObject != 0)
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{
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this->m_refObject->ref();
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}
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}
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void detach(void)
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{
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if (this->m_refObject == 0) return;
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this->m_refObject->unref();
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this->m_refObject = 0;
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}
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};
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template <typename T> struct ObjectSharedPointerTraits { typedef ObjectSharedPointer<T, typename DeleterOf<typename RootOf<T>::Type>::Type, typename BaseOf<T>::Type> Type; };
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};
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};
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#endif // GLW_BOOKKEEPING_H
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