298 lines
7.4 KiB
C++
298 lines
7.4 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2008 INRIA
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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#ifndef NS_POINTER_H
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#define NS_POINTER_H
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#include "attribute.h"
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#include "object.h"
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namespace ns3 {
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class Pointer
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{
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public:
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Pointer ();
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Pointer (Ptr<Object> object);
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void SetObject (Ptr<Object> object);
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Ptr<Object> GetObject (void) const;
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template <typename T>
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Pointer (const Ptr<T> &object);
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template <typename T>
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void Set (const Ptr<T> &object);
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template <typename T>
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Ptr<T> Get (void) const;
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template <typename T>
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operator Ptr<T> () const;
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ATTRIBUTE_CONVERTER_DEFINE (Pointer);
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private:
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Ptr<Object> m_value;
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};
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std::ostream & operator << (std::ostream &os, const Pointer &pointer);
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std::istream & operator >> (std::istream &is, Pointer &pointer);
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ATTRIBUTE_VALUE_DEFINE (Pointer);
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> T::*memberVariable);
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (void (T::*setter) (Ptr<U>));
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> (T::*getter) (void) const);
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (void (T::*setter) (Ptr<U>),
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Ptr<U> (T::*getter) (void) const);
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> (T::*getter) (void) const,
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void (T::*setter) (Ptr<U>));
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class PointerChecker : public AttributeChecker {};
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template <typename T>
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Ptr<AttributeChecker> MakePointerChecker (void);
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} // namespace ns3
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namespace ns3 {
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namespace internal {
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template <typename T>
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class APointerChecker : public PtrChecker
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{
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virtual bool Check (Attribute val) const {
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const PointerValue *value = val.DynCast<const PointerValue *> ();
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if (value == 0)
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{
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return false;
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}
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if (value->Get ().GetObject () == 0)
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{
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return true;
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}
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T *ptr = dynamic_cast<T*> (PeekPointer (value->Get ().GetObject ()));
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if (ptr == 0)
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{
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return false;
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}
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return true;
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}
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virtual std::string GetType (void) const {
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// XXX: we should be able to return better information
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TypeId tid = T::GetTypeId ();
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return "Ptr<" + tid.GetName () + ">";
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}
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virtual bool HasTypeConstraints (void) const {
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return false;
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}
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virtual std::string GetTypeConstraints (void) const {
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return "";
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}
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virtual Attribute Create (void) const {
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return Attribute::Create<PointerValue> ();
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}
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};
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/********************************************************
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* The Accessor associated to
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* PointerValue
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********************************************************/
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template <typename T, typename U>
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class PointerAccessor : public AttributeAccessor
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{
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public:
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virtual ~PointerAccessor () {}
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virtual bool Set (ObjectBase * object, Attribute val) const {
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T *obj = dynamic_cast<T *> (object);
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if (obj == 0)
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{
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return false;
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}
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const PointerValue *value = val.DynCast<const PointerValue *> ();
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if (value == 0)
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{
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return false;
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}
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Ptr<U> ptr = dynamic_cast<U*> (PeekPointer (value->Get ().GetObject ()));
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if (ptr == 0)
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{
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return false;
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}
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DoSet (obj, ptr);
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return true;
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}
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virtual bool Get (const ObjectBase * object, Attribute val) const {
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const T *obj = dynamic_cast<const T *> (object);
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if (obj == 0)
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{
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return false;
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}
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PointerValue *value = val.DynCast<PointerValue *> ();
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if (value == 0)
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{
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return false;
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}
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value->Set (Pointer (DoGet (obj)));
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return true;
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}
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private:
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virtual void DoSet (T *object, Ptr<U> value) const = 0;
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virtual Ptr<U> DoGet (const T *object) const = 0;
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};
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} // namespace internal
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template <typename T>
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Pointer::Pointer (const Ptr<T> &object)
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{
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m_value = object;
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}
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template <typename T>
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void
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Pointer::Set (const Ptr<T> &object)
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{
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m_value = object;
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}
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template <typename T>
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Ptr<T>
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Pointer::Get (void) const
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{
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T *v = dynamic_cast<T *> (PeekPointer (m_value));
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return v;
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}
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template <typename T>
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Pointer::operator Ptr<T> () const
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{
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return Get<T> ();
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}
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> T::*memberVariable)
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{
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struct MemberVariable : public internal::PointerAccessor<T,U>
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{
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Ptr<U> T::*m_memberVariable;
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virtual void DoSet (T *object, Ptr<U> value) const {
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(object->*m_memberVariable) = value;
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return object->*m_memberVariable;
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}
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} *spec = new MemberVariable ();
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spec->m_memberVariable = memberVariable;
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return Ptr<const AttributeAccessor> (spec, false);
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}
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (void (T::*setter) (Ptr<U>))
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{
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struct MemberMethod : public internal::PointerAccessor<T,U>
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{
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void (T::*m_setter) (Ptr<U>);
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virtual void DoSet (T *object, Ptr<U> value) const {
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(object->*m_setter) (value);
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return 0;
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//return (object->*m_getter) ();
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}
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} *spec = new MemberMethod ();
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spec->m_setter = setter;
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return Ptr<const AttributeAccessor> (spec, false);
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}
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> (T::*getter) (void) const)
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{
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struct MemberMethod : public internal::PointerAccessor<T,U>
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{
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Ptr<U> (T::*m_getter) (void) const;
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virtual void DoSet (T *object, Ptr<U> value) const {
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//(object->*m_setter) (value);
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return (object->*m_getter) ();
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}
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} *spec = new MemberMethod ();
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spec->m_getter = getter;
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return Ptr<const AttributeAccessor> (spec, false);
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}
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (void (T::*setter) (Ptr<U>),
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Ptr<U> (T::*getter) (void) const)
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{
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return MakePointerAccessor (getter, setter);
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}
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template <typename T, typename U>
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Ptr<const AttributeAccessor>
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MakePointerAccessor (Ptr<U> (T::*getter) (void) const,
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void (T::*setter) (Ptr<U>))
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{
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struct MemberMethod : public internal::PointerAccessor<T,U>
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{
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void (T::*m_setter) (Ptr<U>);
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Ptr<U> (T::*m_getter) (void) const;
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virtual void DoSet (T *object, Ptr<U> value) const {
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(object->*m_setter) (value);
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return (object->*m_getter) ();
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}
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} *spec = new MemberMethod ();
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spec->m_setter = setter;
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spec->m_getter = getter;
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return Ptr<const AttributeAccessor> (spec, false);
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}
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template <typename T>
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Ptr<AttributeChecker>
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MakePointerChecker (void)
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{
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return Create<internal::APointerChecker<T> > ();
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}
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} // namespace ns3
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#endif /* NS_POINTER_H */
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