Xerces-C++: StDOMNode.hpp Source File

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    00001 #ifndef DOMSPtr_HEADER_GUARD_
    00002 #define DOMSPtr_HEADER_GUARD_
    00003
    00004 /*
    00005  * Copyright 2001-2004 The Apache Software Foundation.
    00006  *
    00007  * Licensed under the Apache License, Version 2.0 (the "License");
    00008  * you may not use this file except in compliance with the License.
    00009  * You may obtain a copy of the License at
    00010  *
    00011  *      http://www.apache.org/licenses/LICENSE-2.0
    00012  *
    00013  * Unless required by applicable law or agreed to in writing, software
    00014  * distributed under the License is distributed on an "AS IS" BASIS,
    00015  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    00016  * See the License for the specific language governing permissions and
    00017  * limitations under the License.
    00018  */
    00019
    00020 /*
    00021  * $Id: StDOMNode.hpp 176026 2004-09-08 13:57:07Z peiyongz $
    00022  */
    00023
    00024 #include <xercesc/dom/DOMNode.hpp>
    00025 #include <xercesc/dom/DOMAttr.hpp>
    00026 #include <xercesc/dom/DOMElement.hpp>
    00027
    00028 XERCES_CPP_NAMESPACE_BEGIN
    00029
    00030 /* This class is a smart pointer implementation over DOMNode interface and
    00031 ** classes derived from it. It takes care of reference counting automatically.
    00032 ** Reference counting is optional so use of this class is experimental.
    00033 */
    00034 template <class T> class StDOMNode {
    00035     T* m_node;
    00036
    00037     static inline void INCREFCOUNT(T *x) { if (x != (T*)0) x->incRefCount(); }
    00038     static inline void DECREFCOUNT(T *x) { if (x != (T*)0) x->decRefCount(); }
    00039
    00040 public:
    00041     inline StDOMNode(T* node = (T*)0) : m_node(node) { INCREFCOUNT(m_node); }
    00042     inline StDOMNode(const StDOMNode& stNode) : m_node(stNode.m_node) { INCREFCOUNT(m_node); }
    00043     inline ~StDOMNode() { DECREFCOUNT(m_node); }
    00044
    00045     inline T* operator= (T *node)
    00046     {
    00047         if (m_node != node) {
    00048             DECREFCOUNT(m_node);
    00049             m_node = node;
    00050             INCREFCOUNT(m_node);
    00051         }
    00052         return (m_node);
    00053     }
    00054
    00055     inline bool operator!= (T* node) const { return (m_node != node); }
    00056     inline bool operator== (T* node) const { return (m_node == node); }
    00057
    00058     inline T& operator* () { return (*m_node); }
    00059     inline const T& operator* () const { return (*m_node); }
    00060     inline T* operator-> () const { return (m_node); }
    00061     inline operator T*() const { return (m_node); }
    00062     inline void ClearNode() { operator=((T*)(0)); }
    00063 };
    00064
    00065 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00066     typedef StDOMNode<DOMNode> DOMNodeSPtr;
    00067 #else
    00068     typedef DOMNode* DOMNodeSPtr;
    00069 #endif
    00070
    00071 /* StDOMNode is a smart pointer implementation over DOMNode interface and
    00072 ** classes derived from it. It takes care of reference counting automatically.
    00073 ** Reference counting is optional so use of this class is experimental.
    00074 */
    00075 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00076     typedef StDOMNode<DOMAttr> DOMAttrSPtr;
    00077 #else
    00078     typedef DOMAttr* DOMAttrSPtr;
    00079 #endif
    00080
    00081 /* StDOMNode is a smart pointer implementation over DOMNode interface and
    00082 ** classes derived from it. It takes care of reference counting automatically.
    00083 ** Reference counting is optional so use of this class is experimental.
    00084 */
    00085 #if defined(XML_DOMREFCOUNT_EXPERIMENTAL)
    00086     typedef StDOMNode<DOMElement> DOMElementSPtr;
    00087 #else
    00088     typedef DOMElement* DOMElementSPtr;
    00089 #endif
    00090
    00091 XERCES_CPP_NAMESPACE_END
    00092
    00093 #endif
    00094

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