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<div class="title">operations.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- c-basic-offset: 2 -*-</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * This file is part of the KDE libraries</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Library General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> * Library General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span>
<a name="l00018"></a>00018 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="l00019"></a>00019 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00020"></a>00020 <span class="comment"> *</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#include "config.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#endif</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#ifndef HAVE_FLOAT_H </span><span class="comment">/* just for !Windows */</span>
<a name="l00027"></a>00027 <span class="preprocessor">#define HAVE_FLOAT_H 0</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define HAVE_FUNC__FINITE 0</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <stdio.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <assert.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <math.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// For declaration of isinf on Sun C++</span>
<a name="l00037"></a>00037 <span class="preprocessor">#ifdef __SUNPRO_CC</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#include <sunmath.h></span>
<a name="l00039"></a>00039 <span class="preprocessor">#endif</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span>
<a name="l00041"></a>00041 <span class="preprocessor">#ifndef HAVE_FUNC_ISINF</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#ifdef HAVE_IEEEFP_H</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#include <ieeefp.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#endif</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* HAVE_FUNC_ISINF */</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="preprocessor">#if HAVE_FLOAT_H</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#include <float.h></span>
<a name="l00049"></a>00049 <span class="preprocessor">#endif</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00051"></a>00051 <span class="preprocessor">#include "operations.h"</span>
<a name="l00052"></a>00052 <span class="preprocessor">#include "object.h"</span>
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">using namespace </span>KJS;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keywordtype">bool</span> KJS::isNaN(<span class="keywordtype">double</span> d)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <span class="preprocessor">#ifdef HAVE_FUNC_ISNAN</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span> <span class="keywordflow">return</span> isnan(d);
<a name="l00060"></a>00060 <span class="preprocessor">#elif defined HAVE_FLOAT_H</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span> <span class="keywordflow">return</span> _isnan(d) != 0;
<a name="l00062"></a>00062 <span class="preprocessor">#else</span>
<a name="l00063"></a>00063 <span class="preprocessor"></span> <span class="keywordflow">return</span> !(d == d);
<a name="l00064"></a>00064 <span class="preprocessor">#endif</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span>}
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keywordtype">bool</span> KJS::isInf(<span class="keywordtype">double</span> d)
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 <span class="preprocessor">#if defined(HAVE_FUNC_ISINF)</span>
<a name="l00070"></a>00070 <span class="preprocessor"></span> <span class="keywordflow">return</span> isinf(d);
<a name="l00071"></a>00071 <span class="preprocessor">#elif HAVE_FUNC_FINITE</span>
<a name="l00072"></a>00072 <span class="preprocessor"></span> <span class="keywordflow">return</span> finite(d) == 0 && d == d;
<a name="l00073"></a>00073 <span class="preprocessor">#elif HAVE_FUNC__FINITE</span>
<a name="l00074"></a>00074 <span class="preprocessor"></span> <span class="keywordflow">return</span> _finite(d) == 0 && d == d;
<a name="l00075"></a>00075 <span class="preprocessor">#else</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span> <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00077"></a>00077 <span class="preprocessor">#endif</span>
<a name="l00078"></a>00078 <span class="preprocessor"></span>}
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keywordtype">bool</span> KJS::isPosInf(<span class="keywordtype">double</span> d)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="preprocessor">#if defined(HAVE_FUNC_ISINF)</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span> <span class="keywordflow">return</span> (isinf(d) == 1);
<a name="l00084"></a>00084 <span class="preprocessor">#elif HAVE_FUNC_FINITE</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span> <span class="keywordflow">return</span> finite(d) == 0 && d == d; <span class="comment">// ### can we distinguish between + and - ?</span>
<a name="l00086"></a>00086 <span class="preprocessor">#elif HAVE_FUNC__FINITE</span>
<a name="l00087"></a>00087 <span class="preprocessor"></span> <span class="keywordflow">return</span> _finite(d) == 0 && d == d; <span class="comment">// ###</span>
<a name="l00088"></a>00088 <span class="preprocessor">#else</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span> <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00090"></a>00090 <span class="preprocessor">#endif</span>
<a name="l00091"></a>00091 <span class="preprocessor"></span>}
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordtype">bool</span> KJS::isNegInf(<span class="keywordtype">double</span> d)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 <span class="preprocessor">#if defined(HAVE_FUNC_ISINF)</span>
<a name="l00096"></a>00096 <span class="preprocessor"></span> <span class="keywordflow">return</span> (isinf(d) == -1);
<a name="l00097"></a>00097 <span class="preprocessor">#elif HAVE_FUNC_FINITE</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span> <span class="keywordflow">return</span> finite(d) == 0 && d == d; <span class="comment">// ###</span>
<a name="l00099"></a>00099 <span class="preprocessor">#elif HAVE_FUNC__FINITE</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span> <span class="keywordflow">return</span> _finite(d) == 0 && d == d; <span class="comment">// ###</span>
<a name="l00101"></a>00101 <span class="preprocessor">#else</span>
<a name="l00102"></a>00102 <span class="preprocessor"></span> <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00103"></a>00103 <span class="preprocessor">#endif</span>
<a name="l00104"></a>00104 <span class="preprocessor"></span>}
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">// ECMA 11.9.3</span>
<a name="l00107"></a>00107 <span class="keywordtype">bool</span> KJS::equal(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a>& v1, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a>& v2)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 Type t1 = v1.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>();
<a name="l00110"></a>00110 Type t2 = v2.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>();
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">if</span> (t1 == t2) {
<a name="l00113"></a>00113 <span class="keywordflow">if</span> (t1 == UndefinedType || t1 == NullType)
<a name="l00114"></a>00114 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (t1 == NumberType)
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 <span class="keywordtype">double</span> d1 = v1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00118"></a>00118 <span class="keywordtype">double</span> d2 = v2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00119"></a>00119 <span class="keywordflow">if</span> ( isNaN( d1 ) || isNaN( d2 ) )
<a name="l00120"></a>00120 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00121"></a>00121 <span class="keywordflow">return</span> ( d1 == d2 ); <span class="comment">/* TODO: +0, -0 ? */</span>
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (t1 == StringType)
<a name="l00124"></a>00124 <span class="keywordflow">return</span> (v1.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec) == v2.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec));
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (t1 == BooleanType)
<a name="l00126"></a>00126 <span class="keywordflow">return</span> (v1.<a class="code" href="classKJS_1_1Value.html#abdcb3fc1afee9326af85eec35592f0b8" title="Performs the ToBoolean type conversion operation on this value (ECMA 9.2)">toBoolean</a>(exec) == v2.<a class="code" href="classKJS_1_1Value.html#abdcb3fc1afee9326af85eec35592f0b8" title="Performs the ToBoolean type conversion operation on this value (ECMA 9.2)">toBoolean</a>(exec));
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">// types are Object</span>
<a name="l00129"></a>00129 <span class="keywordflow">return</span> (v1.imp() == v2.imp());
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">// different types</span>
<a name="l00133"></a>00133 <span class="keywordflow">if</span> ((t1 == NullType && t2 == UndefinedType) || (t1 == UndefinedType && t2 == NullType))
<a name="l00134"></a>00134 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (t1 == NumberType && t2 == StringType) {
<a name="l00136"></a>00136 <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a> n2 = v2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00137"></a>00137 <span class="keywordflow">return</span> equal(exec,v1, n2);
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 <span class="keywordflow">if</span> ((t1 == StringType && t2 == NumberType) || t1 == BooleanType) {
<a name="l00140"></a>00140 <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a> n1 = v1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00141"></a>00141 <span class="keywordflow">return</span> equal(exec,n1, v2);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (t2 == BooleanType) {
<a name="l00144"></a>00144 <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a> n2 = v2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00145"></a>00145 <span class="keywordflow">return</span> equal(exec,v1, n2);
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147 <span class="keywordflow">if</span> ((t1 == StringType || t1 == NumberType) && t2 >= ObjectType) {
<a name="l00148"></a>00148 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p2 = v2.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec);
<a name="l00149"></a>00149 <span class="keywordflow">return</span> equal(exec,v1, p2);
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (t1 >= ObjectType && (t2 == StringType || t2 == NumberType)) {
<a name="l00152"></a>00152 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p1 = v1.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec);
<a name="l00153"></a>00153 <span class="keywordflow">return</span> equal(exec,p1, v2);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keywordtype">bool</span> KJS::strictEqual(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v1, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v2)
<a name="l00160"></a>00160 {
<a name="l00161"></a>00161 Type t1 = v1.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>();
<a name="l00162"></a>00162 Type t2 = v2.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>();
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="keywordflow">if</span> (t1 != t2)
<a name="l00165"></a>00165 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00166"></a>00166 <span class="keywordflow">if</span> (t1 == UndefinedType || t1 == NullType)
<a name="l00167"></a>00167 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (t1 == NumberType) {
<a name="l00169"></a>00169 <span class="keywordtype">double</span> n1 = v1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00170"></a>00170 <span class="keywordtype">double</span> n2 = v2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (isNaN(n1) || isNaN(n2))
<a name="l00172"></a>00172 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00173"></a>00173 <span class="keywordflow">if</span> (n1 == n2)
<a name="l00174"></a>00174 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00175"></a>00175 <span class="comment">/* TODO: +0 and -0 */</span>
<a name="l00176"></a>00176 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00177"></a>00177 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (t1 == StringType) {
<a name="l00178"></a>00178 <span class="keywordflow">return</span> v1.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec) == v2.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec);
<a name="l00179"></a>00179 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (t2 == BooleanType) {
<a name="l00180"></a>00180 <span class="keywordflow">return</span> v1.<a class="code" href="classKJS_1_1Value.html#abdcb3fc1afee9326af85eec35592f0b8" title="Performs the ToBoolean type conversion operation on this value (ECMA 9.2)">toBoolean</a>(exec) == v2.<a class="code" href="classKJS_1_1Value.html#abdcb3fc1afee9326af85eec35592f0b8" title="Performs the ToBoolean type conversion operation on this value (ECMA 9.2)">toBoolean</a>(exec);
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 <span class="keywordflow">if</span> (v1.imp() == v2.imp())
<a name="l00183"></a>00183 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00184"></a>00184 <span class="comment">/* TODO: joined objects */</span>
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="keywordtype">int</span> KJS::relation(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a>& v1, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a>& v2)
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p1 = v1.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec,NumberType);
<a name="l00192"></a>00192 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p2 = v2.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec,NumberType);
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordflow">if</span> (p1.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == StringType && p2.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == StringType)
<a name="l00195"></a>00195 <span class="keywordflow">return</span> p1.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec) < p2.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec) ? 1 : 0;
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordtype">double</span> n1 = p1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00198"></a>00198 <span class="keywordtype">double</span> n2 = p2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00199"></a>00199 <span class="keywordflow">if</span> ( isNaN( n1 ) || isNaN( n2 ) )
<a name="l00200"></a>00200 <span class="keywordflow">return</span> -1; <span class="comment">// means undefined</span>
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (n1 == n2)
<a name="l00202"></a>00202 <span class="keywordflow">return</span> 0;
<a name="l00203"></a>00203 <span class="comment">/* TODO: +0, -0 */</span>
<a name="l00204"></a>00204 <span class="keywordflow">if</span> ( isPosInf( n1 ) )
<a name="l00205"></a>00205 <span class="keywordflow">return</span> 0;
<a name="l00206"></a>00206 <span class="keywordflow">if</span> ( isPosInf( n2 ) )
<a name="l00207"></a>00207 <span class="keywordflow">return</span> 1;
<a name="l00208"></a>00208 <span class="keywordflow">if</span> ( isNegInf( n2 ) )
<a name="l00209"></a>00209 <span class="keywordflow">return</span> 0;
<a name="l00210"></a>00210 <span class="keywordflow">if</span> ( isNegInf( n1 ) )
<a name="l00211"></a>00211 <span class="keywordflow">return</span> 1;
<a name="l00212"></a>00212 <span class="keywordflow">return</span> (n1 < n2) ? 1 : 0;
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="keywordtype">int</span> KJS::maxInt(<span class="keywordtype">int</span> d1, <span class="keywordtype">int</span> d2)
<a name="l00216"></a>00216 {
<a name="l00217"></a>00217 <span class="keywordflow">return</span> (d1 > d2) ? d1 : d2;
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keywordtype">int</span> KJS::minInt(<span class="keywordtype">int</span> d1, <span class="keywordtype">int</span> d2)
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 <span class="keywordflow">return</span> (d1 < d2) ? d1 : d2;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <span class="comment">// ECMA 11.6</span>
<a name="l00226"></a>00226 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> KJS::add(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v1, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v2, <span class="keywordtype">char</span> oper)
<a name="l00227"></a>00227 {
<a name="l00228"></a>00228 <span class="comment">// exception for the Date exception in defaultValue()</span>
<a name="l00229"></a>00229 Type preferred = oper == <span class="charliteral">'+'</span> ? UnspecifiedType : NumberType;
<a name="l00230"></a>00230 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p1 = v1.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec, preferred);
<a name="l00231"></a>00231 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> p2 = v2.<a class="code" href="classKJS_1_1Value.html#a6a2cd9a2183172e1166cf1799961383b" title="Performs the ToPrimitive type conversion operation on this value (ECMA 9.1)">toPrimitive</a>(exec, preferred);
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="keywordflow">if</span> ((p1.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == StringType || p2.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == StringType) && oper == <span class="charliteral">'+'</span>) {
<a name="l00234"></a>00234 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> s1 = p1.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec);
<a name="l00235"></a>00235 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> s2 = p2.<a class="code" href="classKJS_1_1Value.html#a8611b80d868cebf8dd4af2f966810874" title="Performs the ToString type conversion operation on this value (ECMA 9.8)">toString</a>(exec);
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(s1 + s2);
<a name="l00238"></a>00238 }
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="keywordtype">double</span> n1 = p1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00241"></a>00241 <span class="keywordtype">double</span> n2 = p2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (oper == <span class="charliteral">'+'</span>)
<a name="l00244"></a>00244 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(n1 + n2);
<a name="l00245"></a>00245 <span class="keywordflow">else</span>
<a name="l00246"></a>00246 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(n1 - n2);
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <span class="comment">// ECMA 11.5</span>
<a name="l00250"></a>00250 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> KJS::mult(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v1, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> &v2, <span class="keywordtype">char</span> oper)
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 <span class="keywordtype">double</span> n1 = v1.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00253"></a>00253 <span class="keywordtype">double</span> n2 = v2.<a class="code" href="classKJS_1_1Value.html#abc006ad65a05568bbebe2c63604766b8" title="Performs the ToNumber type conversion operation on this value (ECMA 9.3)">toNumber</a>(exec);
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="keywordtype">double</span> result;
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordflow">if</span> (oper == <span class="charliteral">'*'</span>)
<a name="l00258"></a>00258 result = n1 * n2;
<a name="l00259"></a>00259 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (oper == <span class="charliteral">'/'</span>)
<a name="l00260"></a>00260 result = n1 / n2;
<a name="l00261"></a>00261 <span class="keywordflow">else</span>
<a name="l00262"></a>00262 result = fmod(n1, n2);
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(result);
<a name="l00265"></a>00265 }
</pre></div></div>
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