From 6f0567242e23759b26b7f1403f48082528f439e6 Mon Sep 17 00:00:00 2001
From: Shon Ferguson <shonferg@users.sourceforge.net>
Date: Sun, 28 May 2006 03:31:14 +0000
Subject: [PATCH] Implemented Ref member functions.

---
 obj/NiObject.cpp | 34 ++-------------------------
 obj/NiObject.h   | 34 ++-------------------------
 obj/Ref.cpp      | 60 ++++++++++++++++++++++++++++++++++++++++--------
 3 files changed, 54 insertions(+), 74 deletions(-)

diff --git a/obj/NiObject.cpp b/obj/NiObject.cpp
index 10d5dc56..be59a607 100644
--- a/obj/NiObject.cpp
+++ b/obj/NiObject.cpp
@@ -1,35 +1,5 @@
-/* Copyright (c) 2005, NIF File Format Library and Tools
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-
-   * Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-
-   * Redistributions in binary form must reproduce the above
-     copyright notice, this list of conditions and the following
-     disclaimer in the documentation and/or other materials provided
-     with the distribution.
-
-   * Neither the name of the NIF File Format Library and Tools
-     project nor the names of its contributors may be used to endorse
-     or promote products derived from this software without specific
-     prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE. */
+/* Copyright (c) 2006, NIF File Format Library and Tools
+All rights reserved.  Please see niflib.h for licence. */
 
 #include "NiObject.h"
 
diff --git a/obj/NiObject.h b/obj/NiObject.h
index 678b47ea..f46dd623 100644
--- a/obj/NiObject.h
+++ b/obj/NiObject.h
@@ -1,35 +1,5 @@
-/* Copyright (c) 2005, NIF File Format Library and Tools
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-
-   * Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-
-   * Redistributions in binary form must reproduce the above
-     copyright notice, this list of conditions and the following
-     disclaimer in the documentation and/or other materials provided
-     with the distribution.
-
-   * Neither the name of the NIF File Format Library and Tools
-     project nor the names of its contributors may be used to endorse
-     or promote products derived from this software without specific
-     prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE. */
+/* Copyright (c) 2006, NIF File Format Library and Tools
+All rights reserved.  Please see niflib.h for licence. */
 
 #ifndef _NIOBJECT_H_
 #define _NIOBJECT_H_
diff --git a/obj/Ref.cpp b/obj/Ref.cpp
index 348b9431..add4863c 100644
--- a/obj/Ref.cpp
+++ b/obj/Ref.cpp
@@ -8,32 +8,68 @@ Ref<T>::Ref( T * object = NULL ) : _object(object) {}
 
 template <class T>
 Ref<T>::Ref(const Ref & ref_to_copy ) {
-
+	_object = ref_to_copy._object;
+	//If object isn't null, increment reference count
+	if ( _object != NULL ) {
+		_object->AddRef();
+	}
 }
 
 template <class T>
 Ref<T>::operator T*() const {
-
+	return _object;
 }
 
 template <class T>
 T& Ref<T>::operator*() const {
-
+	return _object;
 }
 
 template <class T>
 T* Ref<T>::operator->() const {
-
+	return _object;
 }
 
 template <class T>
 Ref<T> & Ref<T>::operator=( T * object ) {
-
+	//Check if referenced objects are already the same
+	if ( _object == object ) {
+		return this; //Do nothing
+	}
+
+	//Decriment reference count on previously referenced object, if any
+	if ( _object != NULL ) {
+		_object->SubtractRef();
+	}
+
+	//Change reference to new object
+	_object = object;
+
+	//Increment reerence count on new object if it is not NULL
+	if ( _object != NULL ) {
+		_object->AddRef();
+	}
 }
 
 template <class T>
 Ref<T> & Ref<T>::operator=( const Ref & ref ) {
-
+	//Check if referenced objects are already the same
+	if ( _object == ref._object ) {
+		return this; //Do nothing
+	}
+
+	//Decriment reference count on previously referenced object, if any
+	if ( _object != NULL ) {
+		_object->SubtractRef();
+	}
+
+	//Change reference to new object
+	_object = ref._object;
+
+	//Increment reerence count on new object if it is not NULL
+	if ( _object != NULL ) {
+		_object->AddRef();
+	}
 }
 
 template <class T>
@@ -43,20 +79,24 @@ bool Ref<T>::operator<(const Ref & ref) const {
 
 template <class T>
 bool Ref<T>::operator==(T * object) const {
-
+	//Compare pointer values of referenced objects
+	return ( _object == object );
 }
 
 template <class T>
 bool Ref<T>::operator!=(T * object) const {
-
+	//Compare pointer values of referenced objects
+	return ( _object != object );
 }
 
 template <class T>
 bool Ref<T>::operator==(const Ref & ref) const {
-
+	//Compare pointer values of referenced objects
+	return ( _object == ref._object );
 }
 
 template <class T>
 bool Ref<T>::operator!=(const Ref & ref) const {
-
+	//Compare pointer values of referenced objects
+	return ( _object != ref._object );
 }
-- 
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