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<h1>dox/Common/vtkSmartPointer.h</h1><a href="a02127.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*=========================================================================</span>
<a name="l00002"></a>00002 <span class="comment"></span>
<a name="l00003"></a>00003 <span class="comment">  Program:   Visualization Toolkit</span>
<a name="l00004"></a>00004 <span class="comment">  Module:    $RCSfile: vtkSmartPointer.h,v $</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen</span>
<a name="l00007"></a>00007 <span class="comment">  All rights reserved.</span>
<a name="l00008"></a>00008 <span class="comment">  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment">     This software is distributed WITHOUT ANY WARRANTY; without even</span>
<a name="l00011"></a>00011 <span class="comment">     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR</span>
<a name="l00012"></a>00012 <span class="comment">     PURPOSE.  See the above copyright notice for more information.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">=========================================================================*/</span>
<a name="l00025"></a>00025 <span class="preprocessor">#ifndef __vtkSmartPointer_h</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#define __vtkSmartPointer_h</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="a02128.html">vtkSmartPointerBase.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &lt;vtksys/Configure.hxx&gt;</span> <span class="comment">// need check for member template support</span>
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00032"></a><a class="code" href="a01562.html">00032</a> <span class="keyword">class </span><a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer</a>: <span class="keyword">public</span> <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034   <span class="keyword">static</span> T* CheckType(T* t) { <span class="keywordflow">return</span> t; }
<a name="l00035"></a>00035 <span class="keyword">public</span>:
<a name="l00037"></a><a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">00037</a>   <a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">vtkSmartPointer</a>() {}
<a name="l00038"></a>00038 
<a name="l00040"></a><a class="code" href="a01562.html#1d3f6c522727dfce8b137ef630adf3e0">00040</a>   <a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">vtkSmartPointer</a>(T* r): <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>(r) {}
<a name="l00041"></a>00041 
<a name="l00043"></a>00043 
<a name="l00045"></a>00045 <span class="preprocessor">#ifdef vtksys_CXX_HAS_MEMBER_TEMPLATES</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span>  <span class="keyword">template</span> &lt;<span class="keyword">class</span> U&gt;
<a name="l00047"></a>00047   <a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">vtkSmartPointer</a>(<span class="keyword">const</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;U&gt;</a>&amp; r):
<a name="l00048"></a>00048     <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>(CheckType(r.<a class="code" href="a01562.html#864ded1a8d272f26b1f49c78f8348459">GetPointer</a>())) {}
<a name="l00050"></a>00050 <span class="preprocessor">#else</span>
<a name="l00051"></a><a class="code" href="a01562.html#c07baa13b1bb7d025253aa01541278ff">00051</a> <span class="preprocessor"></span>  <a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">vtkSmartPointer</a>(<span class="keyword">const</span> <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>&amp; r): <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>(r) {}
<a name="l00052"></a>00052 <span class="preprocessor">#endif</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span>
<a name="l00055"></a>00055 
<a name="l00057"></a><a class="code" href="a01562.html#7a8b363f6f604735f5368d9c5577fda2">00057</a>   <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer</a>&amp; <a class="code" href="a01562.html#7a8b363f6f604735f5368d9c5577fda2">operator=</a>(T* r)
<a name="l00058"></a>00058     {
<a name="l00059"></a>00059     this-&gt;<a class="code" href="a01563.html#985bd12c359582817630a86ce65dc710">vtkSmartPointerBase::operator=</a>(r);
<a name="l00060"></a>00060     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00061"></a>00061     }
<a name="l00063"></a>00063 
<a name="l00065"></a>00065 
<a name="l00067"></a>00067 <span class="preprocessor">#ifdef vtksys_CXX_HAS_MEMBER_TEMPLATES</span>
<a name="l00068"></a>00068 <span class="preprocessor"></span>  <span class="keyword">template</span> &lt;<span class="keyword">class</span> U&gt;
<a name="l00069"></a>00069   <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer</a>&amp; <a class="code" href="a01562.html#7a8b363f6f604735f5368d9c5577fda2">operator=</a>(<span class="keyword">const</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;U&gt;</a>&amp; r)
<a name="l00070"></a>00070     {
<a name="l00071"></a>00071     this-&gt;<a class="code" href="a01563.html#985bd12c359582817630a86ce65dc710">vtkSmartPointerBase::operator=</a>(CheckType(r.<a class="code" href="a01562.html#864ded1a8d272f26b1f49c78f8348459">GetPointer</a>()));
<a name="l00072"></a>00072     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00073"></a>00073     }
<a name="l00075"></a>00075 <span class="preprocessor">#else</span>
<a name="l00076"></a><a class="code" href="a01562.html#1bab291a880c4873c84f4b4c3381fe62">00076</a> <span class="preprocessor"></span>  <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer</a>&amp; <a class="code" href="a01562.html#7a8b363f6f604735f5368d9c5577fda2">operator=</a>(<span class="keyword">const</span> <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>&amp; r)
<a name="l00077"></a>00077     {
<a name="l00078"></a>00078     this-&gt;<a class="code" href="a01563.html#985bd12c359582817630a86ce65dc710">vtkSmartPointerBase::operator=</a>(r);
<a name="l00079"></a>00079     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00080"></a>00080     }
<a name="l00081"></a>00081 <span class="preprocessor">#endif</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span>
<a name="l00084"></a>00084 
<a name="l00085"></a><a class="code" href="a01562.html#864ded1a8d272f26b1f49c78f8348459">00085</a>   T* <a class="code" href="a01562.html#864ded1a8d272f26b1f49c78f8348459">GetPointer</a>()<span class="keyword"> const</span>
<a name="l00086"></a>00086 <span class="keyword">    </span>{
<a name="l00087"></a>00087     <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>T*<span class="keyword">&gt;</span>(this-&gt;<a class="code" href="a01563.html#c3dbd2e5f2b15677caa8a764c1fa8aa5">Object</a>);
<a name="l00088"></a>00088     }
<a name="l00090"></a>00090 
<a name="l00092"></a>00092 
<a name="l00093"></a><a class="code" href="a01562.html#d7d0447552c8af0d71d9e9a04b4071fb">00093</a>   <a class="code" href="a01562.html#d7d0447552c8af0d71d9e9a04b4071fb">operator T* </a>()<span class="keyword"> const</span>
<a name="l00094"></a>00094 <span class="keyword">    </span>{
<a name="l00095"></a>00095     <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>T*<span class="keyword">&gt;</span>(this-&gt;<a class="code" href="a01563.html#c3dbd2e5f2b15677caa8a764c1fa8aa5">Object</a>);
<a name="l00096"></a>00096     }
<a name="l00098"></a>00098 
<a name="l00100"></a>00100 
<a name="l00102"></a><a class="code" href="a01562.html#eaa927cbc974a06387fc22b8ee42506d">00102</a>   T&amp; <a class="code" href="a01562.html#eaa927cbc974a06387fc22b8ee42506d">operator*</a>()<span class="keyword"> const</span>
<a name="l00103"></a>00103 <span class="keyword">    </span>{
<a name="l00104"></a>00104     <span class="keywordflow">return</span> *<span class="keyword">static_cast&lt;</span>T*<span class="keyword">&gt;</span>(this-&gt;<a class="code" href="a01563.html#c3dbd2e5f2b15677caa8a764c1fa8aa5">Object</a>);
<a name="l00105"></a>00105     }
<a name="l00107"></a>00107 
<a name="l00109"></a>00109 
<a name="l00110"></a><a class="code" href="a01562.html#b63c859a05247ebee3ba9f743df90013">00110</a>   T* <a class="code" href="a01562.html#b63c859a05247ebee3ba9f743df90013">operator-&gt;</a>()<span class="keyword"> const</span>
<a name="l00111"></a>00111 <span class="keyword">    </span>{
<a name="l00112"></a>00112     <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>T*<span class="keyword">&gt;</span>(this-&gt;<a class="code" href="a01563.html#c3dbd2e5f2b15677caa8a764c1fa8aa5">Object</a>);
<a name="l00113"></a>00113     }
<a name="l00115"></a>00115 
<a name="l00117"></a>00117 
<a name="l00124"></a><a class="code" href="a01562.html#2d62985395d352803fe2c60173732eb7">00124</a>   <span class="keywordtype">void</span> <a class="code" href="a01562.html#2d62985395d352803fe2c60173732eb7">TakeReference</a>(T* t)
<a name="l00125"></a>00125     {
<a name="l00126"></a>00126     *<span class="keyword">this</span> = <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a>(t, <a class="code" href="a01564.html">NoReference</a>());
<a name="l00127"></a>00127     }
<a name="l00129"></a>00129 
<a name="l00131"></a>00131 
<a name="l00132"></a><a class="code" href="a01562.html#4a83739df5e7ea185a855a55c085b79f">00132</a>   <span class="keyword">static</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a> <a class="code" href="a01562.html#4a83739df5e7ea185a855a55c085b79f">New</a>()
<a name="l00133"></a>00133     {
<a name="l00134"></a>00134     <span class="keywordflow">return</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a>(T::New(), <a class="code" href="a01564.html">NoReference</a>());
<a name="l00135"></a>00135     }
<a name="l00137"></a>00137 
<a name="l00139"></a>00139 
<a name="l00140"></a><a class="code" href="a01562.html#167a7c6d9ec9a70233628b6a1d30166f">00140</a>   <span class="keyword">static</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a> <a class="code" href="a01562.html#167a7c6d9ec9a70233628b6a1d30166f">NewInstance</a>(T* t)
<a name="l00141"></a>00141     {
<a name="l00142"></a>00142     <span class="keywordflow">return</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a>(t-&gt;NewInstance(), <a class="code" href="a01564.html">NoReference</a>());
<a name="l00143"></a>00143     }
<a name="l00145"></a>00145 
<a name="l00147"></a>00147 
<a name="l00155"></a><a class="code" href="a01562.html#d8fa0b8ab5e3b8ef486d4ef1d2ba9322">00155</a>   <span class="keyword">static</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a> <a class="code" href="a01562.html#d8fa0b8ab5e3b8ef486d4ef1d2ba9322">Take</a>(T* t)
<a name="l00156"></a>00156     {
<a name="l00157"></a>00157     <span class="keywordflow">return</span> <a class="code" href="a01562.html" title="Hold a reference to a vtkObjectBase instance.">vtkSmartPointer&lt;T&gt;</a>(t, <a class="code" href="a01564.html">NoReference</a>());
<a name="l00158"></a>00158     }
<a name="l00160"></a>00160 
<a name="l00161"></a>00161   <span class="comment">// Work-around for HP and IBM overload resolution bug.  Since</span>
<a name="l00162"></a>00162   <span class="comment">// NullPointerOnly is a private type the only pointer value that can</span>
<a name="l00163"></a>00163   <span class="comment">// be passed by user code is a null pointer.  This operator will be</span>
<a name="l00164"></a>00164   <span class="comment">// chosen by the compiler when comparing against null explicitly and</span>
<a name="l00165"></a>00165   <span class="comment">// avoid the bogus ambiguous overload error.</span>
<a name="l00166"></a>00166 <span class="preprocessor">#if defined(__HP_aCC) || defined(__IBMCPP__)</span>
<a name="l00167"></a>00167 <span class="preprocessor"></span><span class="preprocessor"># define VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(op) \</span>
<a name="l00168"></a>00168 <span class="preprocessor">  vtkstd_bool operator op (NullPointerOnly*) const        \</span>
<a name="l00169"></a>00169 <span class="preprocessor">    {                                                     \</span>
<a name="l00170"></a>00170 <span class="preprocessor">    return ::operator op (*this, 0);                      \</span>
<a name="l00171"></a>00171 <span class="preprocessor">    }</span>
<a name="l00172"></a>00172 <span class="preprocessor"></span><span class="keyword">private</span>:
<a name="l00173"></a>00173   <span class="keyword">class </span>NullPointerOnly {};
<a name="l00174"></a>00174 <span class="keyword">public</span>:
<a name="l00175"></a>00175   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(==)
<a name="l00176"></a>00176   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(!=)
<a name="l00177"></a>00177   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(&lt;)
<a name="l00178"></a>00178   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(&lt;=)
<a name="l00179"></a>00179   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(&gt;)
<a name="l00180"></a>00180   VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND(&gt;=)
<a name="l00181"></a>00181 <span class="preprocessor"># undef VTK_SMART_POINTER_DEFINE_OPERATOR_WORKAROUND</span>
<a name="l00182"></a>00182 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00183"></a>00183 <span class="preprocessor"></span><span class="keyword">protected</span>:
<a name="l00184"></a><a class="code" href="a01562.html#d65526881cde44760b1b3e4ae187fbf4">00184</a>   <a class="code" href="a01562.html#16a387bc7d47e3b1b5eb33272524b319">vtkSmartPointer</a>(T* r, <span class="keyword">const</span> <a class="code" href="a01564.html">NoReference</a>&amp; n): <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>(r, n) {}
<a name="l00185"></a>00185 <span class="keyword">private</span>:
<a name="l00186"></a>00186   <span class="comment">// These are purposely not implemented to prevent callers from</span>
<a name="l00187"></a>00187   <span class="comment">// trying to take references from other smart pointers.</span>
<a name="l00188"></a>00188   <span class="keywordtype">void</span> <a class="code" href="a01562.html#2d62985395d352803fe2c60173732eb7">TakeReference</a>(<span class="keyword">const</span> <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>&amp;);  <span class="comment">// Not implemented.</span>
<a name="l00189"></a>00189   <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="a01562.html#d8fa0b8ab5e3b8ef486d4ef1d2ba9322">Take</a>(<span class="keyword">const</span> <a class="code" href="a01563.html" title="Non-templated superclass for vtkSmartPointer.">vtkSmartPointerBase</a>&amp;);  <span class="comment">// Not implemented.</span>
<a name="l00190"></a>00190 };
<a name="l00191"></a>00191 
<a name="l00192"></a><a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">00192</a> <span class="preprocessor">#define VTK_SMART_POINTER_DEFINE_OPERATOR(op) \</span>
<a name="l00193"></a>00193 <span class="preprocessor">  template &lt;class T&gt; \</span>
<a name="l00194"></a>00194 <span class="preprocessor">  inline vtkstd_bool \</span>
<a name="l00195"></a>00195 <span class="preprocessor">  operator op (const vtkSmartPointer&lt;T&gt;&amp; l, const vtkSmartPointer&lt;T&gt;&amp; r) \</span>
<a name="l00196"></a>00196 <span class="preprocessor">    { \</span>
<a name="l00197"></a>00197 <span class="preprocessor">    return (l.GetPointer() op r.GetPointer()); \</span>
<a name="l00198"></a>00198 <span class="preprocessor">    } \</span>
<a name="l00199"></a>00199 <span class="preprocessor">  template &lt;class T&gt; \</span>
<a name="l00200"></a>00200 <span class="preprocessor">  inline vtkstd_bool operator op (T* l, const vtkSmartPointer&lt;T&gt;&amp; r) \</span>
<a name="l00201"></a>00201 <span class="preprocessor">    { \</span>
<a name="l00202"></a>00202 <span class="preprocessor">    return (l op r.GetPointer()); \</span>
<a name="l00203"></a>00203 <span class="preprocessor">    } \</span>
<a name="l00204"></a>00204 <span class="preprocessor">  template &lt;class T&gt; \</span>
<a name="l00205"></a>00205 <span class="preprocessor">  inline vtkstd_bool operator op (const vtkSmartPointer&lt;T&gt;&amp; l, T* r) \</span>
<a name="l00206"></a>00206 <span class="preprocessor">    { \</span>
<a name="l00207"></a>00207 <span class="preprocessor">    return (l.GetPointer() op r); \</span>
<a name="l00208"></a>00208 <span class="preprocessor">    }</span>
<a name="l00209"></a>00209 <span class="preprocessor"></span>
<a name="l00210"></a>00210 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(==)
<a name="l00211"></a>00211 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(!=)
<a name="l00212"></a>00212 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(&lt;)
<a name="l00213"></a>00213 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(&lt;=)
<a name="l00214"></a>00214 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(&gt;)
<a name="l00215"></a>00215 <a class="code" href="a02127.html#a4c1a47a190f2f0b755dcf526b9b6025">VTK_SMART_POINTER_DEFINE_OPERATOR</a>(&gt;=)
<a name="l00216"></a>00216 
<a name="l00217"></a>00217 <span class="preprocessor">#undef VTK_SMART_POINTER_DEFINE_OPERATOR</span>
<a name="l00218"></a>00218 <span class="preprocessor"></span>
<a name="l00220"></a>00220 
<a name="l00221"></a>00221 <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00222"></a><a class="code" href="a02127.html#bf8f84843979741090cee412c9a4c33a">00222</a> <span class="keyword">inline</span> ostream&amp; operator &lt;&lt; (ostream&amp; os, const vtkSmartPointer&lt;T&gt;&amp; p)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225   <span class="keywordflow">return</span> os &lt;&lt; static_cast&lt;const vtkSmartPointerBase&amp;&gt;(p);
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 
<a name="l00228"></a>00228 <span class="preprocessor">#endif</span>
</pre></div></div>
<hr size="1"><address style="text-align: right;"><small>Generated on Wed Jun 3 18:35:12 2009 for VTK by&nbsp;
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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