<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en_US" xml:lang="en_US"> <head> <title>kjs: identifier.cpp Source File (kjs)</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="pics-label" content='(pics-1.1 "http://www.icra.org/ratingsv02.html" comment "ICRAonline DE v2.0" l gen true for "http://www.kde.org" r (nz 1 vz 1 lz 1 oz 1 cb 1) "http://www.rsac.org/ratingsv01.html" l gen true for "http://www.kde.org" r (n 0 s 0 v 0 l 0))' /> <meta name="trademark" content="KDE e.V." /> <meta name="description" content="K Desktop Environment Homepage, KDE.org" /> <meta name="MSSmartTagsPreventParsing" content="true" /> <meta name="robots" content="all" /> <link rel="shortcut icon" href="../../favicon.ico" /> <link rel="stylesheet" media="screen" type="text/css" title="APIDOX" href="doxygen.css" /> </head> <body> <div id="nav_header_top" align="right"> <a href="#content" class="doNotDisplay" accesskey="2">Skip to main content ::</a> <a href="../.."><img id="nav_header_logo" alt="Home" align="left" src="../../kde_gear_64.png" border="0" /></a> <span class="doNotDisplay">::</span> <div id="nav_header_title" align="left">KDE API Reference</div> </div> <div id="nav_header_bottom" align="right"> <span class="doNotDisplay">:: <a href="#navigation" accesskey="5">Skip to Link Menu</a><br/></span> <div id="nav_header_bottom_right" style="text-align: left;"> / <a href="../..">API Reference</a> / <a href=".">kjs</a> </div> </div> <table id="main" border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="top" class="menuheader" height="0"></td> <td id="contentcolumn" valign="top" rowspan="2" > <div id="content" style="padding-top: 0px;"><div style="width:100%; margin: 0px; padding: 0px;"> <a name="content"></a> <!-- Generated by Doxygen 1.4.7 --> <h1>identifier.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> <a name="l00002"></a>00002 <span class="comment"> * This file is part of the KDE libraries</span> <a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2003 Apple Computer, Inc</span> <a name="l00004"></a>00004 <span class="comment"> *</span> <a name="l00005"></a>00005 <span class="comment"> * This library is free software; you can redistribute it and/or</span> <a name="l00006"></a>00006 <span class="comment"> * modify it under the terms of the GNU Library General Public</span> <a name="l00007"></a>00007 <span class="comment"> * License as published by the Free Software Foundation; either</span> <a name="l00008"></a>00008 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span> <a name="l00009"></a>00009 <span class="comment"> *</span> <a name="l00010"></a>00010 <span class="comment"> * This library is distributed in the hope that it will be useful,</span> <a name="l00011"></a>00011 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00012"></a>00012 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span> <a name="l00013"></a>00013 <span class="comment"> * Library General Public License for more details.</span> <a name="l00014"></a>00014 <span class="comment"> *</span> <a name="l00015"></a>00015 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span> <a name="l00016"></a>00016 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span> <a name="l00017"></a>00017 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span> <a name="l00018"></a>00018 <span class="comment"> * Boston, MA 02110-1301, USA.</span> <a name="l00019"></a>00019 <span class="comment"> *</span> <a name="l00020"></a>00020 <span class="comment"> */</span> <a name="l00021"></a>00021 <a name="l00022"></a>00022 <span class="preprocessor">#include "identifier.h"</span> <a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="preprocessor">#include <stdio.h></span> <a name="l00025"></a>00025 <span class="preprocessor">#include <stdlib.h></span> <a name="l00026"></a>00026 <span class="preprocessor">#include <string.h></span> <a name="l00027"></a>00027 <a name="l00028"></a>00028 <span class="preprocessor">#define DUMP_STATISTICS 0</span> <a name="l00029"></a>00029 <span class="preprocessor"></span> <a name="l00030"></a>00030 <span class="keyword">namespace </span>KJS { <a name="l00031"></a>00031 <a name="l00032"></a>00032 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00033"></a>00033 <span class="preprocessor"></span> <a name="l00034"></a>00034 <span class="keyword">static</span> <span class="keywordtype">int</span> numProbes; <a name="l00035"></a>00035 <span class="keyword">static</span> <span class="keywordtype">int</span> numCollisions; <a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="keyword">struct </span>IdentifierStatisticsExitLogger { ~IdentifierStatisticsExitLogger(); }; <a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="keyword">static</span> IdentifierStatisticsExitLogger logger; <a name="l00040"></a>00040 <a name="l00041"></a>00041 IdentifierStatisticsExitLogger::~IdentifierStatisticsExitLogger() <a name="l00042"></a>00042 { <a name="l00043"></a>00043 printf(<span class="stringliteral">"\nKJS::Identifier statistics\n\n"</span>); <a name="l00044"></a>00044 printf(<span class="stringliteral">"%d probes\n"</span>, numProbes); <a name="l00045"></a>00045 printf(<span class="stringliteral">"%d collisions (%.1f%%)\n"</span>, numCollisions, 100.0 * numCollisions / numProbes); <a name="l00046"></a>00046 } <a name="l00047"></a>00047 <a name="l00048"></a>00048 <span class="preprocessor">#endif</span> <a name="l00049"></a>00049 <span class="preprocessor"></span> <a name="l00050"></a>00050 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier argumentsPropertyName(<span class="stringliteral">"arguments"</span>); <a name="l00051"></a>00051 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier calleePropertyName(<span class="stringliteral">"callee"</span>); <a name="l00052"></a>00052 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier constructorPropertyName(<span class="stringliteral">"constructor"</span>); <a name="l00053"></a>00053 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier lengthPropertyName(<span class="stringliteral">"length"</span>); <a name="l00054"></a>00054 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier messagePropertyName(<span class="stringliteral">"message"</span>); <a name="l00055"></a>00055 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier namePropertyName(<span class="stringliteral">"name"</span>); <a name="l00056"></a>00056 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier prototypePropertyName(<span class="stringliteral">"prototype"</span>); <a name="l00057"></a>00057 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier specialPrototypePropertyName(<span class="stringliteral">"__proto__"</span>); <a name="l00058"></a>00058 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier toLocaleStringPropertyName(<span class="stringliteral">"toLocaleString"</span>); <a name="l00059"></a>00059 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier toStringPropertyName(<span class="stringliteral">"toString"</span>); <a name="l00060"></a>00060 <span class="keyword">extern</span> <span class="keyword">const</span> Identifier valueOfPropertyName(<span class="stringliteral">"valueOf"</span>); <a name="l00061"></a>00061 <a name="l00062"></a><a class="code" href="namespaceKJS.html#d2f671aa13fb743ee889c43d4899eebd">00062</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="namespaceKJS.html#d2f671aa13fb743ee889c43d4899eebd">_minTableSize</a> = 64; <a name="l00063"></a>00063 <a name="l00064"></a>00064 UString::Rep **Identifier::_table; <a name="l00065"></a>00065 <span class="keywordtype">int</span> Identifier::_tableSize; <a name="l00066"></a>00066 <span class="keywordtype">int</span> Identifier::_tableSizeMask; <a name="l00067"></a>00067 <span class="keywordtype">int</span> Identifier::_keyCount; <a name="l00068"></a>00068 <a name="l00069"></a>00069 <span class="keywordtype">bool</span> Identifier::equal(UString::Rep *r, <span class="keyword">const</span> <span class="keywordtype">char</span> *s) <a name="l00070"></a>00070 { <a name="l00071"></a>00071 <span class="keywordtype">int</span> length = r->len; <a name="l00072"></a>00072 <span class="keyword">const</span> <a class="code" href="structKJS_1_1UChar.html">UChar</a> *d = r->data(); <a name="l00073"></a>00073 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i != length; ++i) <a name="l00074"></a>00074 <span class="keywordflow">if</span> (d[i].uc != (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)s[i]) <a name="l00075"></a>00075 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00076"></a>00076 <span class="keywordflow">return</span> s[length] == 0; <a name="l00077"></a>00077 } <a name="l00078"></a>00078 <a name="l00079"></a>00079 <span class="keywordtype">bool</span> Identifier::equal(UString::Rep *r, <span class="keyword">const</span> UChar *s, <span class="keywordtype">int</span> length) <a name="l00080"></a>00080 { <a name="l00081"></a>00081 <span class="keywordflow">if</span> (r->len != length) <a name="l00082"></a>00082 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00083"></a>00083 <span class="keyword">const</span> UChar *d = r->data(); <a name="l00084"></a>00084 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i != length; ++i) <a name="l00085"></a>00085 <span class="keywordflow">if</span> (d[i].uc != s[i].uc) <a name="l00086"></a>00086 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00087"></a>00087 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00088"></a>00088 } <a name="l00089"></a>00089 <a name="l00090"></a>00090 <span class="keywordtype">bool</span> Identifier::equal(UString::Rep *r, UString::Rep *b) <a name="l00091"></a>00091 { <a name="l00092"></a>00092 <span class="keywordtype">int</span> length = r->len; <a name="l00093"></a>00093 <span class="keywordflow">if</span> (length != b->len) <a name="l00094"></a>00094 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00095"></a>00095 <span class="keyword">const</span> UChar *d = r->data(); <a name="l00096"></a>00096 <span class="keyword">const</span> UChar *s = b->data(); <a name="l00097"></a>00097 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i != length; ++i) <a name="l00098"></a>00098 <span class="keywordflow">if</span> (d[i].uc != s[i].uc) <a name="l00099"></a>00099 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00100"></a>00100 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00101"></a>00101 } <a name="l00102"></a>00102 <a name="l00103"></a>00103 UString::Rep *Identifier::add(<span class="keyword">const</span> <span class="keywordtype">char</span> *c) <a name="l00104"></a>00104 { <a name="l00105"></a>00105 <span class="keywordflow">if</span> (!c) <a name="l00106"></a>00106 <span class="keywordflow">return</span> &UString::Rep::null; <a name="l00107"></a>00107 <span class="keywordtype">int</span> length = strlen(c); <a name="l00108"></a>00108 <span class="keywordflow">if</span> (length == 0) <a name="l00109"></a>00109 <span class="keywordflow">return</span> &UString::Rep::empty; <a name="l00110"></a>00110 <a name="l00111"></a>00111 <span class="keywordflow">if</span> (!_table) <a name="l00112"></a>00112 expand(); <a name="l00113"></a>00113 <a name="l00114"></a>00114 <span class="keywordtype">unsigned</span> hash = UString::Rep::computeHash(c); <a name="l00115"></a>00115 <a name="l00116"></a>00116 <span class="keywordtype">int</span> i = hash & _tableSizeMask; <a name="l00117"></a>00117 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00118"></a>00118 <span class="preprocessor"></span> ++numProbes; <a name="l00119"></a>00119 numCollisions += _table[i] && !<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(_table[i], c); <a name="l00120"></a>00120 <span class="preprocessor">#endif</span> <a name="l00121"></a>00121 <span class="preprocessor"></span> <span class="keywordflow">while</span> (UString::Rep *key = _table[i]) { <a name="l00122"></a>00122 <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(key, c)) <a name="l00123"></a>00123 <span class="keywordflow">return</span> key; <a name="l00124"></a>00124 i = (i + 1) & _tableSizeMask; <a name="l00125"></a>00125 } <a name="l00126"></a>00126 <a name="l00127"></a>00127 UChar *d = <span class="keyword">new</span> UChar[length]; <a name="l00128"></a>00128 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j != length; j++) <a name="l00129"></a>00129 d[j] = c[j]; <a name="l00130"></a>00130 <a name="l00131"></a>00131 UString::Rep *r = <span class="keyword">new</span> UString::Rep; <a name="l00132"></a>00132 r->dat = d; <a name="l00133"></a>00133 r->len = length; <a name="l00134"></a>00134 r->capacity = UString::Rep::capacityForIdentifier; <a name="l00135"></a>00135 r->rc = 0; <a name="l00136"></a>00136 r->_hash = hash; <a name="l00137"></a>00137 <a name="l00138"></a>00138 _table[i] = r; <a name="l00139"></a>00139 ++_keyCount; <a name="l00140"></a>00140 <a name="l00141"></a>00141 <span class="keywordflow">if</span> (_keyCount * 2 >= _tableSize) <a name="l00142"></a>00142 expand(); <a name="l00143"></a>00143 <a name="l00144"></a>00144 <span class="keywordflow">return</span> r; <a name="l00145"></a>00145 } <a name="l00146"></a>00146 <a name="l00147"></a>00147 UString::Rep *Identifier::add(<span class="keyword">const</span> UChar *s, <span class="keywordtype">int</span> length) <a name="l00148"></a>00148 { <a name="l00149"></a>00149 <span class="keywordflow">if</span> (length == 0) <a name="l00150"></a>00150 <span class="keywordflow">return</span> &UString::Rep::empty; <a name="l00151"></a>00151 <a name="l00152"></a>00152 <span class="keywordflow">if</span> (!_table) <a name="l00153"></a>00153 expand(); <a name="l00154"></a>00154 <a name="l00155"></a>00155 <span class="keywordtype">unsigned</span> hash = UString::Rep::computeHash(s, length); <a name="l00156"></a>00156 <a name="l00157"></a>00157 <span class="keywordtype">int</span> i = hash & _tableSizeMask; <a name="l00158"></a>00158 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00159"></a>00159 <span class="preprocessor"></span> ++numProbes; <a name="l00160"></a>00160 numCollisions += _table[i] && !<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(_table[i], s, length); <a name="l00161"></a>00161 <span class="preprocessor">#endif</span> <a name="l00162"></a>00162 <span class="preprocessor"></span> <span class="keywordflow">while</span> (UString::Rep *key = _table[i]) { <a name="l00163"></a>00163 <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(key, s, length)) <a name="l00164"></a>00164 <span class="keywordflow">return</span> key; <a name="l00165"></a>00165 i = (i + 1) & _tableSizeMask; <a name="l00166"></a>00166 } <a name="l00167"></a>00167 <a name="l00168"></a>00168 UChar *d = <span class="keyword">new</span> UChar[length]; <a name="l00169"></a>00169 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j != length; j++) <a name="l00170"></a>00170 d[j] = s[j]; <a name="l00171"></a>00171 <a name="l00172"></a>00172 UString::Rep *r = <span class="keyword">new</span> UString::Rep; <a name="l00173"></a>00173 r->dat = d; <a name="l00174"></a>00174 r->len = length; <a name="l00175"></a>00175 r->capacity = UString::Rep::capacityForIdentifier; <a name="l00176"></a>00176 r->rc = 0; <a name="l00177"></a>00177 r->_hash = hash; <a name="l00178"></a>00178 <a name="l00179"></a>00179 _table[i] = r; <a name="l00180"></a>00180 ++_keyCount; <a name="l00181"></a>00181 <a name="l00182"></a>00182 <span class="keywordflow">if</span> (_keyCount * 2 >= _tableSize) <a name="l00183"></a>00183 expand(); <a name="l00184"></a>00184 <a name="l00185"></a>00185 <span class="keywordflow">return</span> r; <a name="l00186"></a>00186 } <a name="l00187"></a>00187 <a name="l00188"></a>00188 UString::Rep *Identifier::add(UString::Rep *r) <a name="l00189"></a>00189 { <a name="l00190"></a>00190 <span class="keywordflow">if</span> (r->capacity == UString::Rep::capacityForIdentifier) <a name="l00191"></a>00191 <span class="keywordflow">return</span> r; <a name="l00192"></a>00192 <span class="keywordflow">if</span> (r->len == 0) <a name="l00193"></a>00193 <span class="keywordflow">return</span> &UString::Rep::empty; <a name="l00194"></a>00194 <a name="l00195"></a>00195 <span class="keywordflow">if</span> (!_table) <a name="l00196"></a>00196 expand(); <a name="l00197"></a>00197 <a name="l00198"></a>00198 <span class="keywordtype">unsigned</span> hash = r->hash(); <a name="l00199"></a>00199 <a name="l00200"></a>00200 <span class="keywordtype">int</span> i = hash & _tableSizeMask; <a name="l00201"></a>00201 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00202"></a>00202 <span class="preprocessor"></span> ++numProbes; <a name="l00203"></a>00203 numCollisions += _table[i] && !<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(_table[i], r); <a name="l00204"></a>00204 <span class="preprocessor">#endif</span> <a name="l00205"></a>00205 <span class="preprocessor"></span> <span class="keywordflow">while</span> (UString::Rep *key = _table[i]) { <a name="l00206"></a>00206 <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#acee2102ee6c09f41b5d78c3f71b8ecd">equal</a>(key, r)) <a name="l00207"></a>00207 <span class="keywordflow">return</span> key; <a name="l00208"></a>00208 i = (i + 1) & _tableSizeMask; <a name="l00209"></a>00209 } <a name="l00210"></a>00210 <a name="l00211"></a>00211 r->capacity = UString::Rep::capacityForIdentifier; <a name="l00212"></a>00212 <a name="l00213"></a>00213 _table[i] = r; <a name="l00214"></a>00214 ++_keyCount; <a name="l00215"></a>00215 <a name="l00216"></a>00216 <span class="keywordflow">if</span> (_keyCount * 2 >= _tableSize) <a name="l00217"></a>00217 expand(); <a name="l00218"></a>00218 <a name="l00219"></a>00219 <span class="keywordflow">return</span> r; <a name="l00220"></a>00220 } <a name="l00221"></a>00221 <a name="l00222"></a>00222 <span class="keyword">inline</span> <span class="keywordtype">void</span> Identifier::insert(UString::Rep *key) <a name="l00223"></a>00223 { <a name="l00224"></a>00224 <span class="keywordtype">unsigned</span> hash = key->hash(); <a name="l00225"></a>00225 <a name="l00226"></a>00226 <span class="keywordtype">int</span> i = hash & _tableSizeMask; <a name="l00227"></a>00227 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00228"></a>00228 <span class="preprocessor"></span> ++numProbes; <a name="l00229"></a>00229 numCollisions += _table[i] != 0; <a name="l00230"></a>00230 <span class="preprocessor">#endif</span> <a name="l00231"></a>00231 <span class="preprocessor"></span> <span class="keywordflow">while</span> (_table[i]) <a name="l00232"></a>00232 i = (i + 1) & _tableSizeMask; <a name="l00233"></a>00233 <a name="l00234"></a>00234 _table[i] = key; <a name="l00235"></a>00235 } <a name="l00236"></a>00236 <a name="l00237"></a><a class="code" href="classKJS_1_1Identifier.html#cb6c377fbb2db7f57ebb154eb2865438">00237</a> <span class="keywordtype">void</span> Identifier::remove(UString::Rep *r) <a name="l00238"></a>00238 { <a name="l00239"></a>00239 <span class="keywordtype">unsigned</span> hash = r->hash(); <a name="l00240"></a>00240 <a name="l00241"></a>00241 UString::Rep *key; <a name="l00242"></a>00242 <a name="l00243"></a>00243 <span class="keywordtype">int</span> i = hash & _tableSizeMask; <a name="l00244"></a>00244 <span class="preprocessor">#if DUMP_STATISTICS</span> <a name="l00245"></a>00245 <span class="preprocessor"></span> ++numProbes; <a name="l00246"></a>00246 numCollisions += _table[i] && equal(_table[i], r); <a name="l00247"></a>00247 <span class="preprocessor">#endif</span> <a name="l00248"></a>00248 <span class="preprocessor"></span> <span class="keywordflow">while</span> ((key = _table[i])) { <a name="l00249"></a>00249 <span class="keywordflow">if</span> (equal(key, r)) <a name="l00250"></a>00250 <span class="keywordflow">break</span>; <a name="l00251"></a>00251 i = (i + 1) & _tableSizeMask; <a name="l00252"></a>00252 } <a name="l00253"></a>00253 <span class="keywordflow">if</span> (!key) <a name="l00254"></a>00254 <span class="keywordflow">return</span>; <a name="l00255"></a>00255 <a name="l00256"></a>00256 _table[i] = 0; <a name="l00257"></a>00257 --_keyCount; <a name="l00258"></a>00258 <a name="l00259"></a>00259 <span class="keywordflow">if</span> (_keyCount * 6 < _tableSize && _tableSize > <a class="code" href="namespaceKJS.html#d2f671aa13fb743ee889c43d4899eebd">_minTableSize</a>) { <a name="l00260"></a>00260 shrink(); <a name="l00261"></a>00261 <span class="keywordflow">return</span>; <a name="l00262"></a>00262 } <a name="l00263"></a>00263 <a name="l00264"></a>00264 <span class="comment">// Reinsert all the items to the right in the same cluster.</span> <a name="l00265"></a>00265 <span class="keywordflow">while</span> (1) { <a name="l00266"></a>00266 i = (i + 1) & _tableSizeMask; <a name="l00267"></a>00267 key = _table[i]; <a name="l00268"></a>00268 <span class="keywordflow">if</span> (!key) <a name="l00269"></a>00269 <span class="keywordflow">break</span>; <a name="l00270"></a>00270 _table[i] = 0; <a name="l00271"></a>00271 insert(key); <a name="l00272"></a>00272 } <a name="l00273"></a>00273 } <a name="l00274"></a>00274 <a name="l00275"></a>00275 <span class="keywordtype">void</span> Identifier::expand() <a name="l00276"></a>00276 { <a name="l00277"></a>00277 rehash(_tableSize == 0 ? <a class="code" href="namespaceKJS.html#d2f671aa13fb743ee889c43d4899eebd">_minTableSize</a> : _tableSize * 2); <a name="l00278"></a>00278 } <a name="l00279"></a>00279 <a name="l00280"></a>00280 <span class="keywordtype">void</span> Identifier::shrink() <a name="l00281"></a>00281 { <a name="l00282"></a>00282 rehash(_tableSize / 2); <a name="l00283"></a>00283 } <a name="l00284"></a>00284 <a name="l00285"></a>00285 <span class="keywordtype">void</span> Identifier::rehash(<span class="keywordtype">int</span> newTableSize) <a name="l00286"></a>00286 { <a name="l00287"></a>00287 <span class="keywordtype">int</span> oldTableSize = _tableSize; <a name="l00288"></a>00288 UString::Rep **oldTable = _table; <a name="l00289"></a>00289 <a name="l00290"></a>00290 _tableSize = newTableSize; <a name="l00291"></a>00291 _tableSizeMask = newTableSize - 1; <a name="l00292"></a>00292 _table = (UString::Rep **)calloc(newTableSize, <span class="keyword">sizeof</span>(UString::Rep *)); <a name="l00293"></a>00293 <a name="l00294"></a>00294 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i != oldTableSize; ++i) <a name="l00295"></a>00295 <span class="keywordflow">if</span> (UString::Rep *key = oldTable[i]) <a name="l00296"></a>00296 insert(key); <a name="l00297"></a>00297 <a name="l00298"></a>00298 free(oldTable); <a name="l00299"></a>00299 } <a name="l00300"></a>00300 <a name="l00301"></a><a class="code" href="classKJS_1_1Identifier.html#0c11c80ccfb32ebe3ef21445d308765f">00301</a> <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html">Identifier</a> &<a class="code" href="classKJS_1_1Identifier.html#0c11c80ccfb32ebe3ef21445d308765f">Identifier::null</a>() <a name="l00302"></a>00302 { <a name="l00303"></a>00303 <span class="keyword">static</span> <a class="code" href="classKJS_1_1Identifier.html">Identifier</a> <a class="code" href="classKJS_1_1Identifier.html#0c11c80ccfb32ebe3ef21445d308765f">null</a>; <a name="l00304"></a>00304 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Identifier.html#0c11c80ccfb32ebe3ef21445d308765f">null</a>; <a name="l00305"></a>00305 } <a name="l00306"></a>00306 <a name="l00307"></a>00307 } <span class="comment">// namespace KJS</span> </pre></div> </div></div> </td> </tr> <tr> <td valign="top" id="leftmenu" width="25%"> <a name="navigation"></a> <div class="menu_box"><h2>kjs</h2> <div 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