xercesc/util/CountedPointer.hpp

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *      http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 /*
0019  * $Id$
0020  */
0021
0022 #if !defined(XERCESC_INCLUDE_GUARD_COUNTEDPOINTERTO_HPP)
0023 #define XERCESC_INCLUDE_GUARD_COUNTEDPOINTERTO_HPP
0024
0025 #include <xercesc/util/NullPointerException.hpp>
0026
0027 XERCES_CPP_NAMESPACE_BEGIN
0028
0029 template <class T> class CountedPointerTo : public XMemory
0030 {
0031 public:
0032     // -----------------------------------------------------------------------
0033     //  Constructors and Destructor
0034     // -----------------------------------------------------------------------
0035     CountedPointerTo(const CountedPointerTo<T>& toCopy);
0036     CountedPointerTo(T* p = 0);
0037     ~CountedPointerTo();
0038
0039
0040     // -----------------------------------------------------------------------
0041     //  Operators
0042     // -----------------------------------------------------------------------
0043     CountedPointerTo<T>& operator=(const CountedPointerTo<T>& other);
0044     operator T*();
0045     const T* operator->() const;
0046     T* operator->();
0047     const T& operator*() const;
0048     T& operator*();
0049
0050
0051 private:
0052     // -----------------------------------------------------------------------
0053     //  Data members
0054     //
0055     //  fPtr
0056     //      The pointer that we are counting. The T type must implement the
0057     //      addRef() and removeRef() APIs but it doesn't have to derive from
0058     //      any particular type.
0059     // -----------------------------------------------------------------------
0060     T*  fPtr;
0061 };
0062
0063 XERCES_CPP_NAMESPACE_END
0064
0065 #if !defined(XERCES_TMPLSINC)
0066 #include <xercesc/util/CountedPointer.c>
0067 #endif
0068
0069 #endif