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<hr><h1>pointer.h</h1><a href="pointer_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// Copyright (C) 2001 Open Source Telecom Corporation.</font>
00002 <font class="comment">// </font>
00003 <font class="comment">// This program is free software; you can redistribute it and/or modify</font>
00004 <font class="comment">// it under the terms of the GNU General Public License as published by</font>
00005 <font class="comment">// the Free Software Foundation; either version 2 of the License, or</font>
00006 <font class="comment">// (at your option) any later version.</font>
00007 <font class="comment">// </font>
00008 <font class="comment">// This program is distributed in the hope that it will be useful,</font>
00009 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00010 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00011 <font class="comment">// GNU General Public License for more details.</font>
00012 <font class="comment">// </font>
00013 <font class="comment">// You should have received a copy of the GNU General Public License</font>
00014 <font class="comment">// along with this program; if not, write to the Free Software </font>
00015 <font class="comment">// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</font>
00016 <font class="comment">// </font>
00017 <font class="comment">// As a special exception to the GNU General Public License, permission is </font>
00018 <font class="comment">// granted for additional uses of the text contained in its release </font>
00019 <font class="comment">// of Common C++.</font>
00020 <font class="comment">// </font>
00021 <font class="comment">// The exception is that, if you link the Common C++ library with other</font>
00022 <font class="comment">// files to produce an executable, this does not by itself cause the</font>
00023 <font class="comment">// resulting executable to be covered by the GNU General Public License.</font>
00024 <font class="comment">// Your use of that executable is in no way restricted on account of</font>
00025 <font class="comment">// linking the Common C++ library code into it.</font>
00026 <font class="comment">// </font>
00027 <font class="comment">// This exception does not however invalidate any other reasons why</font>
00028 <font class="comment">// the executable file might be covered by the GNU General Public License.</font>
00029 <font class="comment">// </font>
00030 <font class="comment">// This exception applies only to the code released under the </font>
00031 <font class="comment">// name Common C++. If you copy code from other releases into a copy of</font>
00032 <font class="comment">// Common C++, as the General Public License permits, the exception does</font>
00033 <font class="comment">// not apply to the code that you add in this way. To avoid misleading</font>
00034 <font class="comment">// anyone as to the status of such modified files, you must delete</font>
00035 <font class="comment">// this exception notice from them.</font>
00036 <font class="comment">// </font>
00037 <font class="comment">// If you write modifications of your own for Common C++, it is your choice</font>
00038 <font class="comment">// whether to permit this exception to apply to your modifications.</font>
00039 <font class="comment">// If you do not wish that, delete this exception notice. </font>
00040
00041 <font class="keyword">namespace </font>ost {
00042
00043 template <class T>
<a name="l00044"></a><a class="code" href="classost_1_1_pointer.html">00044</a> <font class="keyword">class </font>Pointer
00045 {
00046 <font class="keyword">protected</font>:
<a name="l00047"></a><a class="code" href="classost_1_1_pointer.html#n0">00047</a> <font class="keywordtype">unsigned</font> *ptrCount;
<a name="l00048"></a><a class="code" href="classost_1_1_pointer.html#n1">00048</a> T *ptrObject;
00049
<a name="l00050"></a><a class="code" href="classost_1_1_pointer.html#b0">00050</a> <font class="keywordtype">void</font> <a class="code" href="classost_1_1_pointer.html#b0">ptrDetach</a>(<font class="keywordtype">void</font>)<font class="keyword"></font>
00051 <font class="keyword"> </font>{
00052 <font class="keywordflow">if</font>(ptrCount && --(*ptrCount)==0)
00053 {
00054 <font class="keyword">delete</font> ptrObject;
00055 <font class="keyword">delete</font> ptrCount;
00056 }
00057 ptrObject = NULL;
00058 ptrCount = NULL;
00059 }
00060
00061 <font class="keyword">public</font>:
<a name="l00062"></a><a class="code" href="classost_1_1_pointer.html#a0">00062</a> <font class="keyword">explicit</font> <a class="code" href="classost_1_1_pointer.html#a0">Pointer</a>(T* ptr = NULL) : ptrObject(ptr)
00063 {
00064 ptrCount = <font class="keyword">new</font> <font class="keywordtype">unsigned</font>;
00065 }
00066
<a name="l00067"></a><a class="code" href="classost_1_1_pointer.html#a1">00067</a> <a class="code" href="classost_1_1_pointer.html#a0">Pointer</a>(<font class="keyword">const</font> Pointer<T> &ref)<font class="keyword"></font>
00068 <font class="keyword"> </font>{
00069 ptrObject = ref.ptrObject;
00070 ptrCount = ref.ptrCount;
00071 ++(*ptrCount);
00072 }
00073
<a name="l00074"></a><a class="code" href="classost_1_1_pointer.html#a2">00074</a> <font class="keyword">inline</font> <font class="keyword">virtual</font> <a class="code" href="classost_1_1_pointer.html#a2">~Pointer</a>()<font class="keyword"></font>
00075 <font class="keyword"> </font>{
00076 <a class="code" href="classost_1_1_pointer.html#b0">ptrDetach</a>();
00077 }
00078
00079
<a name="l00080"></a><a class="code" href="classost_1_1_pointer.html#a3">00080</a> Pointer& <a class="code" href="classost_1_1_pointer.html#a3">operator=</a>(<font class="keyword">const</font> Pointer<T> &ref)<font class="keyword"></font>
00081 <font class="keyword"> </font>{
00082 <font class="keywordflow">if</font>(<font class="keyword">this</font> != &ref)
00083 {
00084 <a class="code" href="classost_1_1_pointer.html#b0">ptrDetach</a>();
00085 ptrObject = ref.ptrObject;
00086 ptrCount = ref.ptrCount;
00087 ++(*ptrCount);
00088 }
00089 <font class="keywordflow">return</font> *<font class="keyword">this</font>;
00090 }
00091
<a name="l00092"></a><a class="code" href="classost_1_1_pointer.html#a4">00092</a> <font class="keyword">inline</font> T& <a class="code" href="classost_1_1_pointer.html#a4">operator*</a>()<font class="keyword"> const</font>
00093 <font class="keyword"> </font>{<font class="keywordflow">return</font> *ptrObject;};
00094
<a name="l00095"></a><a class="code" href="classost_1_1_pointer.html#a5">00095</a> <font class="keyword">inline</font> T* <a class="code" href="classost_1_1_pointer.html#a5">getObject</a>()<font class="keyword"> const</font>
00096 <font class="keyword"> </font>{<font class="keywordflow">return</font> ptrObject;};
00097
<a name="l00098"></a><a class="code" href="classost_1_1_pointer.html#a6">00098</a> <font class="keyword">inline</font> T* <a class="code" href="classost_1_1_pointer.html#a6">operator-></a>()<font class="keyword"> const</font>
00099 <font class="keyword"> </font>{<font class="keywordflow">return</font> ptrObject;};
00100
<a name="l00101"></a><a class="code" href="classost_1_1_pointer.html#a7">00101</a> <font class="keyword">inline</font> <font class="keywordtype">bool</font> <a class="code" href="classost_1_1_pointer.html#a7">operator!</a>()<font class="keyword"> const</font>
00102 <font class="keyword"> </font>{<font class="keywordflow">return</font> (*ptrCount == 1);};
00103
<a name="l00104"></a><a class="code" href="classost_1_1_pointer.html#a8">00104</a> <font class="keyword">inline</font> <font class="keywordtype">int</font> <a class="code" href="classost_1_1_pointer.html#a8">operator++</a>()<font class="keyword"> const</font>
00105 <font class="keyword"> </font>{<font class="keywordflow">return</font> ++(*ptrCount);};
00106
<a name="l00107"></a><a class="code" href="classost_1_1_pointer.html#a9">00107</a> <font class="keywordtype">int</font> <a class="code" href="classost_1_1_pointer.html#a9">operator--</a>()<font class="keyword"> const</font>
00108 <font class="keyword"> </font>{
00109 <font class="keywordflow">if</font>(*ptrCount == 1)
00110 {
00111 <font class="keyword">delete</font> <font class="keyword">this</font>;
00112 <font class="keywordflow">return</font> 0;
00113 }
00114 <font class="keywordflow">return</font> --(*ptrCount);
00115 }
00116 };
00117
00118 };
</pre></div><hr><address><small>Generated at Fri Jan 4 18:51:45 2002 for CommonC++ by
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