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<h1>antlr/RefCount.hpp</h1> </div>
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<a href="RefCount_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef INC_RefCount_hpp__</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define INC_RefCount_hpp__</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span><span class="comment">/* ANTLR Translator Generator</span>
<a name="l00004"></a>00004 <span class="comment"> * Project led by Terence Parr at http://www.jGuru.com</span>
<a name="l00005"></a>00005 <span class="comment"> * Software rights: http://www.antlr.org/license.html</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/RefCount.hpp#2 $</span>
<a name="l00008"></a>00008 <span class="comment"> */</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="preprocessor">#include <antlr/config.hpp></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="keyword">namespace </span>antlr {
<a name="l00014"></a>00014 <span class="preprocessor">#endif</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span>
<a name="l00016"></a>00016 <span class="keyword">template</span><<span class="keyword">class</span> T>
<a name="l00017"></a><a class="code" href="classRefCount.html">00017</a> <span class="keyword">class </span><a class="code" href="config_8hpp.html#ad583892c7af76867441115e41aa1ce52">ANTLR_API</a> <a class="code" href="classRefCount.html">RefCount</a> {
<a name="l00018"></a>00018 <span class="keyword">private</span>:
<a name="l00019"></a><a class="code" href="structRefCount_1_1Ref.html">00019</a> <span class="keyword">struct </span><a class="code" href="structRefCount_1_1Ref.html">Ref</a> {
<a name="l00020"></a><a class="code" href="structRefCount_1_1Ref.html#a8ed9e8c8eca2aeea850ecaeda1a44dd1">00020</a> T* <span class="keyword">const</span> <a class="code" href="structRefCount_1_1Ref.html#a8ed9e8c8eca2aeea850ecaeda1a44dd1">ptr</a>;
<a name="l00021"></a><a class="code" href="structRefCount_1_1Ref.html#affcdecb36765a7db8581a9eb48304309">00021</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRefCount_1_1Ref.html#affcdecb36765a7db8581a9eb48304309">count</a>;
<a name="l00022"></a>00022
<a name="l00023"></a><a class="code" href="structRefCount_1_1Ref.html#a58c7c24c79a0db432566f3c486026260">00023</a> <a class="code" href="structRefCount_1_1Ref.html#a58c7c24c79a0db432566f3c486026260">Ref</a>(T* p) : ptr(p), count(1) {}
<a name="l00024"></a><a class="code" href="structRefCount_1_1Ref.html#ae516cef4f1b6e08acac4761236a37ea4">00024</a> <a class="code" href="structRefCount_1_1Ref.html#ae516cef4f1b6e08acac4761236a37ea4">~Ref</a>() {<span class="keyword">delete</span> ptr;}
<a name="l00025"></a><a class="code" href="structRefCount_1_1Ref.html#a947b951a5eb3700ad6dba80bb15023f0">00025</a> <a class="code" href="structRefCount_1_1Ref.html">Ref</a>* <a class="code" href="structRefCount_1_1Ref.html#a947b951a5eb3700ad6dba80bb15023f0">increment</a>() {++count;<span class="keywordflow">return</span> <span class="keyword">this</span>;}
<a name="l00026"></a><a class="code" href="structRefCount_1_1Ref.html#a044324d768414b17a05734c8009a3dcf">00026</a> <span class="keywordtype">bool</span> <a class="code" href="structRefCount_1_1Ref.html#a044324d768414b17a05734c8009a3dcf">decrement</a>() {<span class="keywordflow">return</span> (--count==0);}
<a name="l00027"></a>00027 <span class="keyword">private</span>:
<a name="l00028"></a>00028 <a class="code" href="structRefCount_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="structRefCount_1_1Ref.html">Ref</a>&);
<a name="l00029"></a>00029 <a class="code" href="structRefCount_1_1Ref.html">Ref</a>& operator=(<span class="keyword">const</span> <a class="code" href="structRefCount_1_1Ref.html">Ref</a>&);
<a name="l00030"></a>00030 }* ref;
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keyword">public</span>:
<a name="l00033"></a><a class="code" href="classRefCount.html#a8e4037fdb1dec53d29483fd05d3eb1c4">00033</a> <span class="keyword">explicit</span> <a class="code" href="classRefCount.html">RefCount</a>(T* p = 0)
<a name="l00034"></a>00034 : ref(p ? new Ref(p) : 0)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 }
<a name="l00037"></a><a class="code" href="classRefCount.html#aac006bd43845d3cf17d233969c682147">00037</a> <a class="code" href="classRefCount.html">RefCount</a>(<span class="keyword">const</span> <a class="code" href="classRefCount.html">RefCount<T></a>& other)
<a name="l00038"></a>00038 : ref(other.ref ? other.ref->increment() : 0)
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 }
<a name="l00041"></a><a class="code" href="classRefCount.html#a618e4f3916ee73360fac3e5be868181e">00041</a> ~<a class="code" href="classRefCount.html">RefCount</a>()
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="keywordflow">if</span> (ref && ref->decrement())
<a name="l00044"></a>00044 <span class="keyword">delete</span> ref;
<a name="l00045"></a>00045 }
<a name="l00046"></a><a class="code" href="classRefCount.html#aab7d875c17c495c869852badd9a40a99">00046</a> <a class="code" href="classRefCount.html">RefCount<T></a>& operator=(<span class="keyword">const</span> <a class="code" href="classRefCount.html">RefCount<T></a>& other)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 Ref* tmp = other.<a class="code" href="classRefCount.html#a59cc2119a88fbf051b61f0c384b00133">ref</a> ? other.<a class="code" href="classRefCount.html#a59cc2119a88fbf051b61f0c384b00133">ref</a>-><a class="code" href="structRefCount_1_1Ref.html#a947b951a5eb3700ad6dba80bb15023f0">increment</a>() : 0;
<a name="l00049"></a>00049 <span class="keywordflow">if</span> (ref && ref->decrement())
<a name="l00050"></a>00050 <span class="keyword">delete</span> ref;
<a name="l00051"></a>00051 ref = tmp;
<a name="l00052"></a>00052 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054
<a name="l00055"></a><a class="code" href="classRefCount.html#a277037cbb9a0674930632b9e4ecbf3fd">00055</a> operator T* ()<span class="keyword"> const</span>
<a name="l00056"></a>00056 <span class="keyword"> </span>{
<a name="l00057"></a>00057 <span class="keywordflow">return</span> ref ? ref->ptr : 0;
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00060"></a><a class="code" href="classRefCount.html#ab761242b0270144e81fa5beb2bbf6221">00060</a> T* operator->()<span class="keyword"> const</span>
<a name="l00061"></a>00061 <span class="keyword"> </span>{
<a name="l00062"></a>00062 <span class="keywordflow">return</span> ref ? ref->ptr : 0;
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a><a class="code" href="classRefCount.html#a12eb72f8226f4d86dc3f3f6b23b33886">00065</a> T* <span class="keyword">get</span>() <span class="keyword">const</span>
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="keywordflow">return</span> ref ? ref->ptr : 0;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069
<a name="l00070"></a><a class="code" href="classRefCount.html#afe0f767c6c1d7648902be9c134f1ddb0">00070</a> <span class="keyword">template</span><<span class="keyword">class</span> newType> operator RefCount<newType>()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keywordflow">return</span> <a class="code" href="classRefCount.html">RefCount<newType></a>(ref);
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="preprocessor">#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span>}
<a name="l00078"></a>00078 <span class="preprocessor">#endif</span>
<a name="l00079"></a>00079 <span class="preprocessor"></span>
<a name="l00080"></a>00080 <span class="preprocessor">#endif //INC_RefCount_hpp__</span>
</pre></div></div>
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