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<h1>identity.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
<a name="l00002"></a>00002 <span class="comment">// identity.h --- definition of the Identity class</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// Author: Curtis Janssen &lt;cljanss@limitpt.com&gt;</span>
<a name="l00007"></a>00007 <span class="comment">// Maintainer: LPS</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// This file is part of the SC Toolkit.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</span>
<a name="l00012"></a>00012 <span class="comment">// it under the terms of the GNU Library General Public License as published by</span>
<a name="l00013"></a>00013 <span class="comment">// the Free Software Foundation; either version 2, or (at your option)</span>
<a name="l00014"></a>00014 <span class="comment">// any later version.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016 <span class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</span>
<a name="l00017"></a>00017 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00018"></a>00018 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00019"></a>00019 <span class="comment">// GNU Library General Public License for more details.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// You should have received a copy of the GNU Library General Public License</span>
<a name="l00022"></a>00022 <span class="comment">// along with the SC Toolkit; see the file COPYING.LIB.  If not, write to</span>
<a name="l00023"></a>00023 <span class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00024"></a>00024 <span class="comment">//</span>
<a name="l00025"></a>00025 <span class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</span>
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="preprocessor">#ifndef _util_ref_identity_h</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define _util_ref_identity_h</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#ifdef __GNUG__</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#pragma interface</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include &lt;iostream&gt;</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#include &lt;scconfig.h&gt;</span>
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="keyword">namespace </span>sc {
<a name="l00040"></a>00040 
<a name="l00041"></a>00041 <span class="keyword">class </span>Identity;
<a name="l00042"></a>00042 
<a name="l00050"></a><a class="code" href="classsc_1_1Identifier.html">00050</a> <span class="keyword">class </span><a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a> {
<a name="l00051"></a>00051   <span class="keyword">private</span>:
<a name="l00052"></a>00052     <span class="keyword">const</span> <span class="keywordtype">void</span>* id;
<a name="l00053"></a>00053   <span class="keyword">public</span>:
<a name="l00055"></a><a class="code" href="classsc_1_1Identifier.html#f2b3b24afbaa5801495ced3ff2d8ea9b">00055</a>     <a class="code" href="classsc_1_1Identifier.html#f2b3b24afbaa5801495ced3ff2d8ea9b" title="Create an Identifier for a null object.">Identifier</a>(): id(0) {}
<a name="l00057"></a><a class="code" href="classsc_1_1Identifier.html#f50527e694476ac8ec0b751c23c920cb">00057</a>     <a class="code" href="classsc_1_1Identifier.html#f50527e694476ac8ec0b751c23c920cb" title="Create an Identifier for the given object.">Identifier</a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identity.html" title="Identity gives objects a unique identity and ordering relationship relative to all...">Identity</a>* i): id((void*)i) {}
<a name="l00059"></a><a class="code" href="classsc_1_1Identifier.html#7bb723401444bfd3947606782776ee0b">00059</a>     <a class="code" href="classsc_1_1Identifier.html#7bb723401444bfd3947606782776ee0b" title="Create an Identifier for the given object.">Identifier</a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp; i): id(i.id) {}
<a name="l00061"></a><a class="code" href="classsc_1_1Identifier.html#1c45128d7b811037b1145a102aa1f8f6">00061</a>     <a class="code" href="classsc_1_1Identifier.html#1c45128d7b811037b1145a102aa1f8f6" title="The destructor does nothing.">~Identifier</a>() {}
<a name="l00062"></a>00062 
<a name="l00064"></a><a class="code" href="classsc_1_1Identifier.html#f9d65e026af7a650813cce39d73d379c">00064</a>     <span class="keywordtype">void</span> <a class="code" href="classsc_1_1Identifier.html#f9d65e026af7a650813cce39d73d379c" title="Assign to the given Identifier.">operator = </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp; i) { <span class="keywordtype">id</span> = i.id; }
<a name="l00065"></a>00065 
<a name="l00067"></a><a class="code" href="classsc_1_1Identifier.html#b53b3eafd4c1f4aae0b93b7677e162ab">00067</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#b53b3eafd4c1f4aae0b93b7677e162ab" title="Less than.">operator &lt; </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> &lt; i.id; }
<a name="l00069"></a><a class="code" href="classsc_1_1Identifier.html#4cfbd508ae7b4bd2229a7153af9757b4">00069</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#4cfbd508ae7b4bd2229a7153af9757b4" title="Greater than.">operator &gt; </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> &gt; i.id; }
<a name="l00071"></a><a class="code" href="classsc_1_1Identifier.html#fb9b336cea5ac85fc1b9fe45af6a8b5f">00071</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#fb9b336cea5ac85fc1b9fe45af6a8b5f" title="Equal.">operator == </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> == i.id; }
<a name="l00073"></a><a class="code" href="classsc_1_1Identifier.html#91670858d963ea4d4fb4d0873591189a">00073</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#91670858d963ea4d4fb4d0873591189a" title="Less than or equal.">operator &lt;= </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> &lt;= i.id; }
<a name="l00075"></a><a class="code" href="classsc_1_1Identifier.html#2f2a6327a13714fc5347f644347e210e">00075</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#2f2a6327a13714fc5347f644347e210e" title="Greater than or equal.">operator &gt;= </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> &gt;= i.id; }
<a name="l00077"></a><a class="code" href="classsc_1_1Identifier.html#b948141499869558e4de6206709d60b1">00077</a>     <span class="keywordtype">int</span> <a class="code" href="classsc_1_1Identifier.html#b948141499869558e4de6206709d60b1" title="Not equal.">operator != </a>(<span class="keyword">const</span> <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a>&amp;i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keywordtype">id</span> != i.id; }
<a name="l00078"></a>00078 
<a name="l00079"></a>00079     <span class="keywordtype">void</span> print(std::ostream&amp;) <span class="keyword">const</span>;
<a name="l00080"></a>00080 };
<a name="l00081"></a>00081 
<a name="l00082"></a>00082 std::ostream &amp; operator &lt;&lt; (std::ostream &amp;o, <span class="keyword">const</span> Identifier &amp;i);
<a name="l00083"></a>00083 
<a name="l00089"></a><a class="code" href="classsc_1_1Identity.html">00089</a> <span class="keyword">class </span><a class="code" href="classsc_1_1Identity.html" title="Identity gives objects a unique identity and ordering relationship relative to all...">Identity</a> {
<a name="l00090"></a>00090   <span class="keyword">public</span>:
<a name="l00091"></a>00091     <span class="keyword">virtual</span> ~<a class="code" href="classsc_1_1Identity.html" title="Identity gives objects a unique identity and ordering relationship relative to all...">Identity</a>();
<a name="l00094"></a><a class="code" href="classsc_1_1Identity.html#077335fa5900cf01495cb3fe485382a7">00094</a>     <a class="code" href="classsc_1_1Identifier.html" title="Identifier&amp;#39;s are used to distinguish and order objects.">Identifier</a> <a class="code" href="classsc_1_1Identity.html#077335fa5900cf01495cb3fe485382a7" title="Return the Identifier for this argument.">identifier</a>() { <span class="keywordflow">return</span> <span class="keyword">this</span>; }
<a name="l00095"></a>00095 };
<a name="l00097"></a>00097 <span class="keyword">inline</span> <span class="keywordtype">int</span> lt(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i &lt; j; }
<a name="l00099"></a>00099 <span class="keyword">inline</span> <span class="keywordtype">int</span> gt(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i &gt; j; }
<a name="l00101"></a>00101 <span class="keyword">inline</span> <span class="keywordtype">int</span> le(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i &lt;= j; }
<a name="l00103"></a>00103 <span class="keyword">inline</span> <span class="keywordtype">int</span> ge(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i &gt;= j; }
<a name="l00105"></a>00105 <span class="keyword">inline</span> <span class="keywordtype">int</span> eq(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i == j; }
<a name="l00107"></a>00107 <span class="keyword">inline</span> <span class="keywordtype">int</span> ne(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j) { <span class="keywordflow">return</span> i != j; }
<a name="l00110"></a>00110 <span class="keyword">inline</span> <span class="keywordtype">int</span> cmp(<span class="keyword">const</span> Identity*i, <span class="keyword">const</span> Identity*j)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112   <span class="keywordflow">return</span> (i==j)?0:((i&lt;j)?-1:1);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 
<a name="l00117"></a>00117 <span class="preprocessor">#endif</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span>
<a name="l00119"></a>00119 <span class="comment">// Local Variables:</span>
<a name="l00120"></a>00120 <span class="comment">// mode: c++</span>
<a name="l00121"></a>00121 <span class="comment">// c-file-style: "CLJ"</span>
<a name="l00122"></a>00122 <span class="comment">// End:</span>
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