<?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: value.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 1.7.4 --> <div class="header"> <div class="headertitle"> <div class="title">value.cpp</div> </div> </div> <div class="contents"> <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) 1999-2001 Harri Porten (porten@kde.org)</span> <a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2001 Peter Kelly (pmk@post.com)</span> <a name="l00006"></a>00006 <span class="comment"> * Copyright (C) 2003 Apple Computer, Inc.</span> <a name="l00007"></a>00007 <span class="comment"> *</span> <a name="l00008"></a>00008 <span class="comment"> * This library is free software; you can redistribute it and/or</span> <a name="l00009"></a>00009 <span class="comment"> * modify it under the terms of the GNU Library General Public</span> <a name="l00010"></a>00010 <span class="comment"> * License as published by the Free Software Foundation; either</span> <a name="l00011"></a>00011 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span> <a name="l00012"></a>00012 <span class="comment"> *</span> <a name="l00013"></a>00013 <span class="comment"> * This library is distributed in the hope that it will be useful,</span> <a name="l00014"></a>00014 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00015"></a>00015 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span> <a name="l00016"></a>00016 <span class="comment"> * Library General Public License for more details.</span> <a name="l00017"></a>00017 <span class="comment"> *</span> <a name="l00018"></a>00018 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span> <a name="l00019"></a>00019 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span> <a name="l00020"></a>00020 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span> <a name="l00021"></a>00021 <span class="comment"> * Boston, MA 02110-1301, USA.</span> <a name="l00022"></a>00022 <span class="comment"> *</span> <a name="l00023"></a>00023 <span class="comment"> */</span> <a name="l00024"></a>00024 <a name="l00025"></a>00025 <span class="preprocessor">#include "value.h"</span> <a name="l00026"></a>00026 <span class="preprocessor">#include "object.h"</span> <a name="l00027"></a>00027 <span class="preprocessor">#include "types.h"</span> <a name="l00028"></a>00028 <span class="preprocessor">#include "interpreter.h"</span> <a name="l00029"></a>00029 <a name="l00030"></a>00030 <span class="preprocessor">#include <assert.h></span> <a name="l00031"></a>00031 <span class="preprocessor">#include <math.h></span> <a name="l00032"></a>00032 <span class="preprocessor">#include <stdio.h></span> <a name="l00033"></a>00033 <span class="preprocessor">#include <string.h></span> <a name="l00034"></a>00034 <span class="preprocessor">#include <limits.h></span> <a name="l00035"></a>00035 <a name="l00036"></a>00036 <span class="preprocessor">#include "internal.h"</span> <a name="l00037"></a>00037 <span class="preprocessor">#include "collector.h"</span> <a name="l00038"></a>00038 <span class="preprocessor">#include "operations.h"</span> <a name="l00039"></a>00039 <span class="preprocessor">#include "error_object.h"</span> <a name="l00040"></a>00040 <span class="preprocessor">#include "nodes.h"</span> <a name="l00041"></a>00041 <span class="preprocessor">#include "simple_number.h"</span> <a name="l00042"></a>00042 <a name="l00043"></a>00043 <span class="keyword">using namespace </span>KJS; <a name="l00044"></a>00044 <a name="l00045"></a>00045 <span class="comment">// ----------------------------- ValueImp -------------------------------------</span> <a name="l00046"></a>00046 <a name="l00047"></a>00047 ValueImp::ValueImp() : <a name="l00048"></a>00048 refcount(0), <a name="l00049"></a>00049 <span class="comment">// Tell the garbage collector that this memory block corresponds to a real object now</span> <a name="l00050"></a>00050 _flags(VI_CREATED) <a name="l00051"></a>00051 { <a name="l00052"></a>00052 <span class="comment">//fprintf(stderr,"ValueImp::ValueImp %p\n",(void*)this);</span> <a name="l00053"></a>00053 } <a name="l00054"></a>00054 <a name="l00055"></a>00055 ValueImp::~ValueImp() <a name="l00056"></a>00056 { <a name="l00057"></a>00057 <span class="comment">//fprintf(stderr,"ValueImp::~ValueImp %p\n",(void*)this);</span> <a name="l00058"></a>00058 _flags |= VI_DESTRUCTED; <a name="l00059"></a>00059 } <a name="l00060"></a>00060 <a name="l00061"></a>00061 <span class="keywordtype">void</span> ValueImp::mark() <a name="l00062"></a>00062 { <a name="l00063"></a>00063 <span class="comment">//fprintf(stderr,"ValueImp::mark %p\n",(void*)this);</span> <a name="l00064"></a>00064 _flags |= VI_MARKED; <a name="l00065"></a>00065 } <a name="l00066"></a>00066 <a name="l00067"></a>00067 <span class="keywordtype">bool</span> ValueImp::marked()<span class="keyword"> const</span> <a name="l00068"></a>00068 <span class="keyword"></span>{ <a name="l00069"></a>00069 <span class="comment">// Simple numbers are always considered marked.</span> <a name="l00070"></a>00070 <span class="keywordflow">return</span> SimpleNumber::is(<span class="keyword">this</span>) || (_flags & VI_MARKED); <a name="l00071"></a>00071 } <a name="l00072"></a>00072 <a name="l00073"></a>00073 <span class="keywordtype">void</span> ValueImp::setGcAllowed() <a name="l00074"></a>00074 { <a name="l00075"></a>00075 <span class="comment">//fprintf(stderr,"ValueImp::setGcAllowed %p\n",(void*)this);</span> <a name="l00076"></a>00076 <span class="comment">// simple numbers are never seen by the collector so setting this</span> <a name="l00077"></a>00077 <span class="comment">// flag is irrelevant</span> <a name="l00078"></a>00078 <span class="keywordflow">if</span> (!SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00079"></a>00079 _flags |= VI_GCALLOWED; <a name="l00080"></a>00080 } <a name="l00081"></a>00081 <a name="l00082"></a>00082 <span class="keywordtype">void</span>* ValueImp::operator new(<span class="keywordtype">size_t</span> s) <a name="l00083"></a>00083 { <a name="l00084"></a>00084 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Collector.html#a82ab0f2a4b1a30d51d152432d92b00d4" title="Register an object with the collector.">Collector::allocate</a>(s); <a name="l00085"></a>00085 } <a name="l00086"></a>00086 <a name="l00087"></a>00087 <span class="keywordtype">void</span> ValueImp::operator delete(<span class="keywordtype">void</span>*) <a name="l00088"></a>00088 { <a name="l00089"></a>00089 <span class="comment">// Do nothing. So far.</span> <a name="l00090"></a>00090 } <a name="l00091"></a>00091 <a name="l00092"></a>00092 <span class="keywordtype">bool</span> ValueImp::toUInt32(<span class="keywordtype">unsigned</span>&)<span class="keyword"> const</span> <a name="l00093"></a>00093 <span class="keyword"></span>{ <a name="l00094"></a>00094 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00095"></a>00095 } <a name="l00096"></a>00096 <a name="l00097"></a>00097 <span class="comment">// ECMA 9.4</span> <a name="l00098"></a>00098 <span class="keywordtype">int</span> ValueImp::toInteger(<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 name="l00099"></a>00099 <span class="keyword"></span>{ <a name="l00100"></a>00100 <span class="keywordtype">unsigned</span> i; <a name="l00101"></a>00101 <span class="keywordflow">if</span> (dispatchToUInt32(i)) <a name="l00102"></a>00102 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(i); <a name="l00103"></a>00103 <span class="keywordtype">double</span> d = roundValue(exec, <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>(const_cast<ValueImp*>(<span class="keyword">this</span>))); <a name="l00104"></a>00104 <span class="keywordflow">if</span> (isInf(d)) <a name="l00105"></a>00105 <span class="keywordflow">return</span> INT_MAX; <a name="l00106"></a>00106 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(d); <a name="l00107"></a>00107 } <a name="l00108"></a>00108 <a name="l00109"></a>00109 <span class="keywordtype">int</span> ValueImp::toInt32(<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 name="l00110"></a>00110 <span class="keyword"></span>{ <a name="l00111"></a>00111 <span class="keywordtype">unsigned</span> i; <a name="l00112"></a>00112 <span class="keywordflow">if</span> (dispatchToUInt32(i)) <a name="l00113"></a>00113 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)i; <a name="l00114"></a>00114 <a name="l00115"></a>00115 <span class="keywordtype">double</span> d = roundValue(exec, <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>(const_cast<ValueImp*>(<span class="keyword">this</span>))); <a name="l00116"></a>00116 <span class="keywordflow">if</span> (isNaN(d) || isInf(d) || d == 0.0) <a name="l00117"></a>00117 <span class="keywordflow">return</span> 0; <a name="l00118"></a>00118 <span class="keywordtype">double</span> d32 = fmod(d, D32); <a name="l00119"></a>00119 <a name="l00120"></a>00120 <span class="comment">//Make sure we use the positive remainder. This matters since this may be</span> <a name="l00121"></a>00121 <span class="comment">//less than MIN_INT (but still < 2^32), and we don't want the cast to clamp.</span> <a name="l00122"></a>00122 <span class="keywordflow">if</span> (d32 < 0) <a name="l00123"></a>00123 d32 += D32; <a name="l00124"></a>00124 <a name="l00125"></a>00125 <span class="keywordflow">if</span> (d32 >= D32 / 2.0) <a name="l00126"></a>00126 d32 -= D32; <a name="l00127"></a>00127 <a name="l00128"></a>00128 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(d32); <a name="l00129"></a>00129 } <a name="l00130"></a>00130 <a name="l00131"></a>00131 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ValueImp::toUInt32(<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 name="l00132"></a>00132 <span class="keyword"></span>{ <a name="l00133"></a>00133 <span class="keywordtype">unsigned</span> i; <a name="l00134"></a>00134 <span class="keywordflow">if</span> (dispatchToUInt32(i)) <a name="l00135"></a>00135 <span class="keywordflow">return</span> i; <a name="l00136"></a>00136 <a name="l00137"></a>00137 <span class="keywordtype">double</span> d = roundValue(exec, <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>(const_cast<ValueImp*>(<span class="keyword">this</span>))); <a name="l00138"></a>00138 <span class="keywordflow">if</span> (isNaN(d) || isInf(d) || d == 0.0) <a name="l00139"></a>00139 <span class="keywordflow">return</span> 0; <a name="l00140"></a>00140 <span class="keywordtype">double</span> d32 = fmod(d, D32); <a name="l00141"></a>00141 <a name="l00142"></a>00142 <span class="keywordflow">if</span> (d32 < 0) <a name="l00143"></a>00143 d32 += D32; <a name="l00144"></a>00144 <a name="l00145"></a>00145 <span class="comment">//6.3.1.4 Real floating and integer</span> <a name="l00146"></a>00146 <span class="comment">// 50) The remaindering operation performed when a value of integer type is</span> <a name="l00147"></a>00147 <span class="comment">// converted to unsigned type need not be performed when a value of real</span> <a name="l00148"></a>00148 <span class="comment">// floating type is converted to unsigned type. Thus, the range of</span> <a name="l00149"></a>00149 <span class="comment">// portable real floating values is (-1, Utype_MAX+1).</span> <a name="l00150"></a>00150 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">int</span><span class="keyword">></span>(d32); <a name="l00151"></a>00151 } <a name="l00152"></a>00152 <a name="l00153"></a>00153 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> ValueImp::toUInt16(<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 name="l00154"></a>00154 <span class="keyword"></span>{ <a name="l00155"></a>00155 <span class="keywordtype">unsigned</span> i; <a name="l00156"></a>00156 <span class="keywordflow">if</span> (dispatchToUInt32(i)) <a name="l00157"></a>00157 <span class="keywordflow">return</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>)i; <a name="l00158"></a>00158 <a name="l00159"></a>00159 <span class="keywordtype">double</span> d = roundValue(exec, <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>(const_cast<ValueImp*>(<span class="keyword">this</span>))); <a name="l00160"></a>00160 <span class="keywordtype">double</span> d16 = fmod(d, D16); <a name="l00161"></a>00161 <a name="l00162"></a>00162 <span class="comment">// look at toUInt32 to see why this is necesary</span> <a name="l00163"></a>00163 <span class="keywordtype">int</span> t_int = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(d16); <a name="l00164"></a>00164 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span> <span class="keywordtype">short</span><span class="keyword">></span>(t_int); <a name="l00165"></a>00165 } <a name="l00166"></a>00166 <a name="l00167"></a>00167 <span class="comment">// Dispatchers for virtual functions, to special-case simple numbers which</span> <a name="l00168"></a>00168 <span class="comment">// won't be real pointers.</span> <a name="l00169"></a>00169 <a name="l00170"></a>00170 Type ValueImp::dispatchType()<span class="keyword"> const</span> <a name="l00171"></a>00171 <span class="keyword"></span>{ <a name="l00172"></a>00172 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00173"></a>00173 <span class="keywordflow">return</span> NumberType; <a name="l00174"></a>00174 <span class="keywordflow">return</span> type(); <a name="l00175"></a>00175 } <a name="l00176"></a>00176 <a name="l00177"></a>00177 <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> ValueImp::dispatchToPrimitive(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, Type preferredType)<span class="keyword"> const</span> <a name="l00178"></a>00178 <span class="keyword"></span>{ <a name="l00179"></a>00179 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00180"></a>00180 <span class="keywordflow">return</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>(const_cast<ValueImp *>(<span class="keyword">this</span>)); <a name="l00181"></a>00181 <span class="keywordflow">return</span> toPrimitive(exec, preferredType); <a name="l00182"></a>00182 } <a name="l00183"></a>00183 <a name="l00184"></a>00184 <span class="keywordtype">bool</span> ValueImp::dispatchToBoolean(<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 name="l00185"></a>00185 <span class="keyword"></span>{ <a name="l00186"></a>00186 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00187"></a>00187 <span class="keywordflow">return</span> SimpleNumber::value(<span class="keyword">this</span>); <a name="l00188"></a>00188 <span class="keywordflow">return</span> toBoolean(exec); <a name="l00189"></a>00189 } <a name="l00190"></a>00190 <a name="l00191"></a>00191 <span class="keywordtype">double</span> ValueImp::dispatchToNumber(<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 name="l00192"></a>00192 <span class="keyword"></span>{ <a name="l00193"></a>00193 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00194"></a>00194 <span class="keywordflow">return</span> SimpleNumber::value(<span class="keyword">this</span>); <a name="l00195"></a>00195 <span class="keywordflow">return</span> toNumber(exec); <a name="l00196"></a>00196 } <a name="l00197"></a>00197 <a name="l00198"></a>00198 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> ValueImp::dispatchToString(<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 name="l00199"></a>00199 <span class="keyword"></span>{ <a name="l00200"></a>00200 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00201"></a>00201 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1UString.html#afa4fb189e0a0a6094b54516833eb0257" title="Constructs a string from an int.">UString::from</a>(SimpleNumber::value(<span class="keyword">this</span>)); <a name="l00202"></a>00202 <span class="keywordflow">return</span> toString(exec); <a name="l00203"></a>00203 } <a name="l00204"></a>00204 <a name="l00205"></a>00205 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> ValueImp::dispatchToObject(<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 name="l00206"></a>00206 <span class="keyword"></span>{ <a name="l00207"></a>00207 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) <a name="l00208"></a>00208 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keyword">const </span>NumberImp *<span class="keyword">></span>(<span class="keyword">this</span>)->NumberImp::toObject(exec); <a name="l00209"></a>00209 <span class="keywordflow">return</span> toObject(exec); <a name="l00210"></a>00210 } <a name="l00211"></a>00211 <a name="l00212"></a>00212 <span class="keywordtype">bool</span> ValueImp::dispatchToUInt32(<span class="keywordtype">unsigned</span>& result)<span class="keyword"> const</span> <a name="l00213"></a>00213 <span class="keyword"></span>{ <a name="l00214"></a>00214 <span class="keywordflow">if</span> (SimpleNumber::is(<span class="keyword">this</span>)) { <a name="l00215"></a>00215 <span class="keywordtype">long</span> i = SimpleNumber::value(<span class="keyword">this</span>); <a name="l00216"></a>00216 <span class="keywordflow">if</span> (i < 0) <a name="l00217"></a>00217 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00218"></a>00218 result = (unsigned)i; <a name="l00219"></a>00219 <span class="keywordflow">return</span> <span class="keyword">true</span>; <a name="l00220"></a>00220 } <a name="l00221"></a>00221 <span class="keywordflow">return</span> toUInt32(result); <a name="l00222"></a>00222 } <a name="l00223"></a>00223 <a name="l00224"></a>00224 <span class="comment">// ------------------------------ Value ----------------------------------------</span> <a name="l00225"></a>00225 <a name="l00226"></a>00226 Value::Value(<a class="code" href="classKJS_1_1ValueImp.html" title="ValueImp is the base type for all primitives (Undefined, Null, Boolean, String, Number) and objects i...">ValueImp</a> *v) <a name="l00227"></a>00227 { <a name="l00228"></a>00228 rep = v; <a name="l00229"></a>00229 <span class="preprocessor">#ifdef DEBUG_COLLECTOR</span> <a name="l00230"></a>00230 <span class="preprocessor"></span> assert (!(rep && !SimpleNumber::is(rep) && *((uint32_t *)rep) == 0 )); <a name="l00231"></a>00231 assert (!(rep && !SimpleNumber::is(rep) && rep->_flags & ValueImp::VI_MARKED)); <a name="l00232"></a>00232 <span class="preprocessor">#endif</span> <a name="l00233"></a>00233 <span class="preprocessor"></span> <span class="keywordflow">if</span> (v) <a name="l00234"></a>00234 { <a name="l00235"></a>00235 v->ref(); <a name="l00236"></a>00236 <span class="comment">//fprintf(stderr, "Value::Value(%p) imp=%p ref=%d\n", this, rep, rep->refcount);</span> <a name="l00237"></a>00237 v->setGcAllowed(); <a name="l00238"></a>00238 } <a name="l00239"></a>00239 } <a name="l00240"></a>00240 <a name="l00241"></a>00241 Value::Value(<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> &v) <a name="l00242"></a>00242 { <a name="l00243"></a>00243 rep = v.imp(); <a name="l00244"></a>00244 <span class="preprocessor">#ifdef DEBUG_COLLECTOR</span> <a name="l00245"></a>00245 <span class="preprocessor"></span> assert (!(rep && !SimpleNumber::is(rep) && *((uint32_t *)rep) == 0 )); <a name="l00246"></a>00246 assert (!(rep && !SimpleNumber::is(rep) && rep->_flags & ValueImp::VI_MARKED)); <a name="l00247"></a>00247 <span class="preprocessor">#endif</span> <a name="l00248"></a>00248 <span class="preprocessor"></span> <span class="keywordflow">if</span> (rep) <a name="l00249"></a>00249 { <a name="l00250"></a>00250 rep->ref(); <a name="l00251"></a>00251 <span class="comment">//fprintf(stderr, "Value::Value(%p)(copying %p) imp=%p ref=%d\n", this, &v, rep, rep->refcount);</span> <a name="l00252"></a>00252 } <a name="l00253"></a>00253 } <a name="l00254"></a>00254 <a name="l00255"></a>00255 Value::~Value() <a name="l00256"></a>00256 { <a name="l00257"></a>00257 <span class="keywordflow">if</span> (rep) <a name="l00258"></a>00258 { <a name="l00259"></a>00259 rep->deref(); <a name="l00260"></a>00260 <span class="comment">//fprintf(stderr, "Value::~Value(%p) imp=%p ref=%d\n", this, rep, rep->refcount);</span> <a name="l00261"></a>00261 } <a name="l00262"></a>00262 } <a name="l00263"></a>00263 <a name="l00264"></a>00264 <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>& Value::operator=(<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> &v) <a name="l00265"></a>00265 { <a name="l00266"></a>00266 <a class="code" href="classKJS_1_1ValueImp.html" title="ValueImp is the base type for all primitives (Undefined, Null, Boolean, String, Number) and objects i...">ValueImp</a> *tmpRep = v.imp(); <a name="l00267"></a>00267 <a name="l00268"></a>00268 <span class="comment">//Avoid the destruction of the object underneath us by</span> <a name="l00269"></a>00269 <span class="comment">//incrementing the reference on it first</span> <a name="l00270"></a>00270 <span class="keywordflow">if</span> (tmpRep) { <a name="l00271"></a>00271 tmpRep->ref(); <a name="l00272"></a>00272 <span class="comment">//fprintf(stderr, "Value::operator=(%p)(copying %p) imp=%p ref=%d\n", this, &v, tmpRep, tmpRep->refcount);</span> <a name="l00273"></a>00273 } <a name="l00274"></a>00274 <a name="l00275"></a>00275 <span class="keywordflow">if</span> (rep) { <a name="l00276"></a>00276 rep->deref(); <a name="l00277"></a>00277 <span class="comment">//fprintf(stderr, "Value::operator=(%p)(copying %p) old imp=%p ref=%d\n", this, &v, rep, rep->refcount);</span> <a name="l00278"></a>00278 } <a name="l00279"></a>00279 rep = tmpRep; <a name="l00280"></a>00280 <a name="l00281"></a>00281 <span class="keywordflow">return</span> *<span class="keyword">this</span>; <a name="l00282"></a>00282 } <a name="l00283"></a>00283 <a name="l00284"></a>00284 <span class="comment">// ------------------------------ Undefined ------------------------------------</span> <a name="l00285"></a>00285 <a name="l00286"></a>00286 Undefined::Undefined() : <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>(UndefinedImp::staticUndefined) <a name="l00287"></a>00287 { <a name="l00288"></a>00288 } <a name="l00289"></a>00289 <a name="l00290"></a><a class="code" href="classKJS_1_1Undefined.html#a2f8a1c7556b12c35c66945af335e663d">00290</a> <a class="code" href="classKJS_1_1Undefined.html" title="Represents an primitive Undefined value.">Undefined</a> <a class="code" href="classKJS_1_1Undefined.html#a2f8a1c7556b12c35c66945af335e663d" title="Converts a Value into an Undefined.">Undefined::dynamicCast</a>(<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> &v) <a name="l00291"></a>00291 { <a name="l00292"></a>00292 <span class="keywordflow">if</span> (!v.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || v.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() != UndefinedType) <a name="l00293"></a>00293 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Undefined.html" title="Represents an primitive Undefined value.">Undefined</a>(0); <a name="l00294"></a>00294 <a name="l00295"></a>00295 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Undefined.html" title="Represents an primitive Undefined value.">Undefined</a>(); <a name="l00296"></a>00296 } <a name="l00297"></a>00297 <a name="l00298"></a>00298 <span class="comment">// ------------------------------ Null -----------------------------------------</span> <a name="l00299"></a>00299 <a name="l00300"></a>00300 Null::Null() : <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>(NullImp::staticNull) <a name="l00301"></a>00301 { <a name="l00302"></a>00302 } <a name="l00303"></a>00303 <a name="l00304"></a><a class="code" href="classKJS_1_1Null.html#ac55086549993e5b9ec82888d1fbad4a2">00304</a> <a class="code" href="classKJS_1_1Null.html" title="Represents an primitive Null value.">Null</a> <a class="code" href="classKJS_1_1Null.html#ac55086549993e5b9ec82888d1fbad4a2" title="Converts a Value into an Null.">Null::dynamicCast</a>(<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> &v) <a name="l00305"></a>00305 { <a name="l00306"></a>00306 <span class="keywordflow">if</span> (!v.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || v.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() != NullType) <a name="l00307"></a>00307 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Null.html" title="Represents an primitive Null value.">Null</a>(0); <a name="l00308"></a>00308 <a name="l00309"></a>00309 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Null.html" title="Represents an primitive Null value.">Null</a>(); <a name="l00310"></a>00310 } <a name="l00311"></a>00311 <a name="l00312"></a>00312 <span class="comment">// ------------------------------ Boolean --------------------------------------</span> <a name="l00313"></a>00313 <a name="l00314"></a>00314 Boolean::Boolean(<span class="keywordtype">bool</span> b) <a name="l00315"></a>00315 : <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>(b ? BooleanImp::staticTrue : BooleanImp::staticFalse) <a name="l00316"></a>00316 { <a name="l00317"></a>00317 } <a name="l00318"></a>00318 <a name="l00319"></a>00319 <span class="keywordtype">bool</span> Boolean::value()<span class="keyword"> const</span> <a name="l00320"></a>00320 <span class="keyword"></span>{ <a name="l00321"></a>00321 assert(rep); <a name="l00322"></a>00322 <span class="keywordflow">return</span> ((BooleanImp*)rep)->value(); <a name="l00323"></a>00323 } <a name="l00324"></a>00324 <a name="l00325"></a><a class="code" href="classKJS_1_1Boolean.html#a96f5bc36ab27fd2c6616bafc74dc953c">00325</a> <a class="code" href="classKJS_1_1Boolean.html" title="Represents an primitive Boolean value.">Boolean</a> <a class="code" href="classKJS_1_1Boolean.html#a96f5bc36ab27fd2c6616bafc74dc953c" title="Converts a Value into an Boolean.">Boolean::dynamicCast</a>(<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> &v) <a name="l00326"></a>00326 { <a name="l00327"></a>00327 <span class="keywordflow">if</span> (!v.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || v.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() != BooleanType) <a name="l00328"></a>00328 <span class="keywordflow">return</span> static_cast<BooleanImp*>(0); <a name="l00329"></a>00329 <a name="l00330"></a>00330 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>BooleanImp*<span class="keyword">></span>(v.imp()); <a name="l00331"></a>00331 } <a name="l00332"></a>00332 <a name="l00333"></a>00333 <span class="comment">// ------------------------------ String ---------------------------------------</span> <a name="l00334"></a>00334 <a name="l00335"></a>00335 String::String(<span class="keyword">const</span> <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> &s) : <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>(new StringImp(s)) <a name="l00336"></a>00336 { <a name="l00337"></a>00337 <span class="preprocessor">#ifndef NDEBUG</span> <a name="l00338"></a>00338 <span class="preprocessor"></span> <span class="keywordflow">if</span> (s.<a class="code" href="classKJS_1_1UString.html#a13c9d3fb7c7f081736b28ee2d76471d4">isNull</a>()) <a name="l00339"></a>00339 fprintf(stderr, <span class="stringliteral">"WARNING: KJS::String constructed from null string\n"</span>); <a name="l00340"></a>00340 <span class="preprocessor">#endif</span> <a name="l00341"></a>00341 <span class="preprocessor"></span>} <a name="l00342"></a>00342 <a name="l00343"></a>00343 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> String::value()<span class="keyword"> const</span> <a name="l00344"></a>00344 <span class="keyword"></span>{ <a name="l00345"></a>00345 assert(rep); <a name="l00346"></a>00346 <span class="keywordflow">return</span> ((StringImp*)rep)->value(); <a name="l00347"></a>00347 } <a name="l00348"></a>00348 <a name="l00349"></a><a class="code" href="classKJS_1_1String.html#a9934613ec4bb9e634b21d1cb5642ed1f">00349</a> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a> <a class="code" href="classKJS_1_1String.html#a9934613ec4bb9e634b21d1cb5642ed1f" title="Converts a Value into an String.">String::dynamicCast</a>(<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> &v) <a name="l00350"></a>00350 { <a name="l00351"></a>00351 <span class="keywordflow">if</span> (!v.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || v.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() != StringType) <a name="l00352"></a>00352 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(0); <a name="l00353"></a>00353 <a name="l00354"></a>00354 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(static_cast<StringImp*>(v.imp())); <a name="l00355"></a>00355 } <a name="l00356"></a>00356 <a name="l00357"></a>00357 <span class="comment">// ------------------------------ Number ---------------------------------------</span> <a name="l00358"></a>00358 <a name="l00359"></a>00359 Number::Number(<span class="keywordtype">int</span> i) <a name="l00360"></a>00360 : <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>(SimpleNumber::fits(i) ? SimpleNumber::make(i) : new NumberImp(static_cast<double>(i))) { } <a name="l00361"></a>00361 <a name="l00362"></a>00362 Number::Number(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> u) <a name="l00363"></a>00363 : <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>(SimpleNumber::fits(u) ? SimpleNumber::make(u) : new NumberImp(static_cast<double>(u))) { } <a name="l00364"></a>00364 <a name="l00365"></a>00365 Number::Number(<span class="keywordtype">double</span> d) <a name="l00366"></a>00366 <span class="preprocessor">#if defined(__alpha) && !defined(_IEEE_FP)</span> <a name="l00367"></a>00367 <span class="preprocessor"></span> <span class="comment">// check for NaN first if we werent't compiled with -mieee on Alpha</span> <a name="l00368"></a>00368 : <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::isNaN(d) ? NumberImp::staticNaN : (SimpleNumber::fits(d) ? SimpleNumber::make((<span class="keywordtype">long</span>)d) : <span class="keyword">new</span> NumberImp(d))) { } <a name="l00369"></a>00369 <span class="preprocessor">#else</span> <a name="l00370"></a>00370 <span class="preprocessor"></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>(SimpleNumber::fits(d) ? SimpleNumber::make((<span class="keywordtype">long</span>)d) : (KJS::isNaN(d) ? NumberImp::staticNaN : <span class="keyword">new</span> NumberImp(d))) { } <a name="l00371"></a>00371 <span class="preprocessor">#endif</span> <a name="l00372"></a>00372 <span class="preprocessor"></span> <a name="l00373"></a>00373 Number::Number(<span class="keywordtype">long</span> <span class="keywordtype">int</span> l) <a name="l00374"></a>00374 : <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>(SimpleNumber::fits(l) ? SimpleNumber::make(l) : new NumberImp(static_cast<double>(l))) { } <a name="l00375"></a>00375 <a name="l00376"></a>00376 Number::Number(<span class="keywordtype">long</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> l) <a name="l00377"></a>00377 : <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>(SimpleNumber::fits(l) ? SimpleNumber::make(l) : new NumberImp(static_cast<double>(l))) { } <a name="l00378"></a>00378 <a name="l00379"></a><a class="code" href="classKJS_1_1Number.html#a574a744ace39612446d1f8fc59c48bc2">00379</a> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a> <a class="code" href="classKJS_1_1Number.html#a574a744ace39612446d1f8fc59c48bc2" title="Converts a Value into an Number.">Number::dynamicCast</a>(<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> &v) <a name="l00380"></a>00380 { <a name="l00381"></a>00381 <span class="keywordflow">if</span> (!v.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || v.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() != NumberType) <a name="l00382"></a>00382 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>((NumberImp*)0); <a name="l00383"></a>00383 <a name="l00384"></a>00384 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(static_cast<NumberImp*>(v.imp())); <a name="l00385"></a>00385 } <a name="l00386"></a>00386 <a name="l00387"></a>00387 <span class="keywordtype">double</span> Number::value()<span class="keyword"> const</span> <a name="l00388"></a>00388 <span class="keyword"></span>{ <a name="l00389"></a>00389 <span class="keywordflow">if</span> (SimpleNumber::is(rep)) <a name="l00390"></a>00390 <span class="keywordflow">return</span> (<span class="keywordtype">double</span>)SimpleNumber::value(rep); <a name="l00391"></a>00391 assert(rep); <a name="l00392"></a>00392 <span class="keywordflow">return</span> ((NumberImp*)rep)->value(); <a name="l00393"></a>00393 } <a name="l00394"></a>00394 <a name="l00395"></a>00395 <span class="keywordtype">int</span> Number::intValue()<span class="keyword"> const</span> <a name="l00396"></a>00396 <span class="keyword"></span>{ <a name="l00397"></a>00397 <span class="keywordflow">if</span> (SimpleNumber::is(rep)) <a name="l00398"></a>00398 <span class="keywordflow">return</span> SimpleNumber::value(rep); <a name="l00399"></a>00399 <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)((NumberImp*)rep)->value(); <a name="l00400"></a>00400 } <a name="l00401"></a>00401 <a name="l00402"></a>00402 <span class="keywordtype">bool</span> Number::isNaN()<span class="keyword"> const</span> <a name="l00403"></a>00403 <span class="keyword"></span>{ <a name="l00404"></a>00404 <span class="keywordflow">return</span> rep == NumberImp::staticNaN; <a name="l00405"></a>00405 } <a name="l00406"></a>00406 <a name="l00407"></a>00407 <span class="keywordtype">bool</span> Number::isInf()<span class="keyword"> const</span> <a name="l00408"></a>00408 <span class="keyword"></span>{ <a name="l00409"></a>00409 <span class="keywordflow">if</span> (SimpleNumber::is(rep)) <a name="l00410"></a>00410 <span class="keywordflow">return</span> <span class="keyword">false</span>; <a name="l00411"></a>00411 <span class="keywordflow">return</span> KJS::isInf(((NumberImp*)rep)->value()); <a name="l00412"></a>00412 } </pre></div></div> </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 class="nav_list"> <ul><li><a href="index.html">Main Page</a></li><li><a href="hierarchy.html">Class Hierarchy</a></li><li><a href="classes.html">Alphabetical List</a></li><li><a href="annotated.html">Class List</a></li><li><a href="files.html">File List</a></li><li><a href="functions.html">Class Members</a></li><li><a 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