Crazy Eddies GUI System 0.7.6
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00001 /************************************************************************ 00002 filename: CEGUIRefCounted.h 00003 created: Wed Mar 1 2006 00004 author: Paul D Turner <paul@cegui.org.uk> 00005 *************************************************************************/ 00006 /*************************************************************************** 00007 * Copyright (C) 2004 - 2006 Paul D Turner & The CEGUI Development Team 00008 * 00009 * Permission is hereby granted, free of charge, to any person obtaining 00010 * a copy of this software and associated documentation files (the 00011 * "Software"), to deal in the Software without restriction, including 00012 * without limitation the rights to use, copy, modify, merge, publish, 00013 * distribute, sublicense, and/or sell copies of the Software, and to 00014 * permit persons to whom the Software is furnished to do so, subject to 00015 * the following conditions: 00016 * 00017 * The above copyright notice and this permission notice shall be 00018 * included in all copies or substantial portions of the Software. 00019 * 00020 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00021 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00022 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 00023 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR 00024 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 00025 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 00026 * OTHER DEALINGS IN THE SOFTWARE. 00027 ***************************************************************************/ 00028 #ifndef _CEGUIRefCounted_h_ 00029 #define _CEGUIRefCounted_h_ 00030 00031 // Start of CEGUI namespace section 00032 namespace CEGUI 00033 { 00039 template<typename T> 00040 class RefCounted 00041 { 00042 public: 00047 RefCounted() : 00048 d_object(0), 00049 d_count(0) 00050 { 00051 } 00052 00057 RefCounted(T* ob) : 00058 d_object(ob), 00059 d_count((ob != 0) ? new unsigned int(1) : 0) 00060 { 00061 } 00062 00067 RefCounted(const RefCounted<T>& other) : 00068 d_object(other.d_object), 00069 d_count(other.d_count) 00070 { 00071 if (d_count) 00072 addRef(); 00073 } 00074 00080 ~RefCounted() 00081 { 00082 if (d_object) 00083 release(); 00084 } 00085 00092 RefCounted<T>& operator=(const RefCounted<T>& other) 00093 { 00094 if (*this != other) 00095 { 00096 if (d_object) 00097 release(); 00098 00099 d_object = other.d_object; 00100 d_count = d_object ? other.d_count : 0; 00101 00102 if (d_count) 00103 addRef(); 00104 } 00105 00106 return *this; 00107 } 00108 00114 bool operator==(const RefCounted<T>& other) const 00115 { 00116 return d_object == other.d_object; 00117 } 00118 00124 bool operator!=(const RefCounted<T>& other) const 00125 { 00126 return d_object != other.d_object; 00127 } 00128 00134 const T& operator*() const 00135 { 00136 return *d_object; 00137 } 00138 00139 T& operator*() 00140 { 00141 return *d_object; 00142 } 00143 00148 const T* operator->() const 00149 { 00150 return d_object; 00151 } 00152 00153 T* operator->() 00154 { 00155 return d_object; 00156 } 00157 00162 bool isValid() const 00163 { 00164 return d_object != 0; 00165 } 00166 00167 private: 00172 void addRef() 00173 { 00174 ++*d_count; 00175 } 00176 00182 void release() 00183 { 00184 if (!--*d_count) 00185 { 00186 delete d_object; 00187 delete d_count; 00188 d_object = 0; 00189 d_count = 0; 00190 } 00191 } 00192 00193 T* d_object; 00194 unsigned int* d_count; 00195 }; 00196 00197 } // End of CEGUI namespace section 00198 00199 #endif // end of guard _CEGUIRefCounted_h_