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<div class="title">object_object.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 Lesser 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"> * Lesser 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 Lesser General Public</span>
<a name="l00017"></a>00017 <span class="comment"> * License along with this library; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, 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 "value.h"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "object.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "types.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "interpreter.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "operations.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "object_object.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "function_object.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "lookup.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <stdio.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <assert.h></span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="keyword">using namespace </span>KJS;
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="comment">// ------------------------------ ObjectPrototypeImp --------------------------------</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 ObjectPrototypeImp::ObjectPrototypeImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec,
<a name="l00038"></a>00038 <a class="code" href="classKJS_1_1FunctionPrototypeImp.html" title="The initial value of Function.prototype (and thus all objects created with the Function constructor)...">FunctionPrototypeImp</a> *funcProto)
<a name="l00039"></a>00039 : ObjectImp() <span class="comment">// [[Prototype]] is Null()</span>
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 <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> protect(<span class="keyword">this</span>);
<a name="l00042"></a>00042 putDirect(toStringPropertyName, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::ToString,
<a name="l00043"></a>00043 0, toStringPropertyName), DontEnum);
<a name="l00044"></a>00044 putDirect(toLocaleStringPropertyName, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::ToLocaleString,
<a name="l00045"></a>00045 0, toLocaleStringPropertyName), DontEnum);
<a name="l00046"></a>00046 putDirect(valueOfPropertyName, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::ValueOf,
<a name="l00047"></a>00047 0, valueOfPropertyName), DontEnum);
<a name="l00048"></a>00048 putDirect(<span class="stringliteral">"hasOwnProperty"</span>, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::HasOwnProperty,
<a name="l00049"></a>00049 1,<span class="stringliteral">"hasOwnProperty"</span>),DontEnum);
<a name="l00050"></a>00050 putDirect(<span class="stringliteral">"isPrototypeOf"</span>, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::IsPrototypeOf,
<a name="l00051"></a>00051 1,<span class="stringliteral">"isPrototypeOf"</span>),DontEnum);
<a name="l00052"></a>00052 putDirect(<span class="stringliteral">"propertyIsEnumerable"</span>, <span class="keyword">new</span> ObjectProtoFuncImp(exec,funcProto,ObjectProtoFuncImp::PropertyIsEnumerable,
<a name="l00053"></a>00053 1,<span class="stringliteral">"propertyIsEnumerable"</span>),DontEnum);
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="preprocessor">#ifndef KJS_PURE_ECMA // standard compliance location is the Global object</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span> <span class="comment">// see http://www.devguru.com/Technologies/ecmascript/quickref/object.html</span>
<a name="l00057"></a>00057 <a class="code" href="classKJS_1_1Object.html#aa67ec5ebaa19921db0fec1688378da2e" title="Sets the specified property.">put</a>(exec, <span class="stringliteral">"eval"</span>,
<a name="l00058"></a>00058 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a>(<span class="keyword">new</span> GlobalFuncImp(exec, funcProto,GlobalFuncImp::Eval, 1, <span class="stringliteral">"eval"</span>)),
<a name="l00059"></a>00059 DontEnum);
<a name="l00060"></a>00060 <span class="preprocessor">#endif</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>}
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// ------------------------------ ObjectProtoFuncImp --------------------------------</span>
<a name="l00064"></a>00064
<a name="l00065"></a>00065 ObjectProtoFuncImp::ObjectProtoFuncImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> * <span class="comment">/*exec*/</span>,
<a name="l00066"></a>00066 <a class="code" href="classKJS_1_1FunctionPrototypeImp.html" title="The initial value of Function.prototype (and thus all objects created with the Function constructor)...">FunctionPrototypeImp</a> *funcProto,
<a name="l00067"></a>00067 <span class="keywordtype">int</span> i, <span class="keywordtype">int</span> len, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> &_ident)
<a name="l00068"></a>00068 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>(funcProto), id(i)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <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> protect(<span class="keyword">this</span>);
<a name="l00071"></a>00071 putDirect(lengthPropertyName, len, DontDelete|ReadOnly|DontEnum);
<a name="l00072"></a>00072 ident = _ident;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keywordtype">bool</span> ObjectProtoFuncImp::implementsCall()<span class="keyword"> const</span>
<a name="l00077"></a>00077 <span class="keyword"></span>{
<a name="l00078"></a>00078 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="comment">// ECMA 15.2.4.2 + 15.2.4.3</span>
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <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> ObjectProtoFuncImp::call(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> &thisObj, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> &args)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="keywordflow">switch</span> (<span class="keywordtype">id</span>) {
<a name="l00086"></a>00086 <span class="keywordflow">case</span> ToString:
<a name="l00087"></a>00087 <span class="comment">// fall through</span>
<a name="l00088"></a>00088 <span class="keywordflow">case</span> ToLocaleString:
<a name="l00089"></a>00089 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(<span class="stringliteral">"[object "</span>+thisObj.<a class="code" href="classKJS_1_1Object.html#a17276492a78bac1b2a6f777d6dc819a3" title="Returns the class name of the object.">className</a>()+<span class="stringliteral">"]"</span>);
<a name="l00090"></a>00090 <span class="keywordflow">case</span> ValueOf:
<a name="l00091"></a>00091 <span class="keywordflow">return</span> thisObj;
<a name="l00092"></a>00092 <span class="keywordflow">case</span> HasOwnProperty: {
<a name="l00093"></a>00093 <span class="comment">// Same as hasProperty() but without checking the prototype</span>
<a name="l00094"></a>00094 <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> propertyName(args[0].toString(exec));
<a name="l00095"></a>00095 <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> tempProto(thisObj.imp()->prototype());
<a name="l00096"></a>00096 thisObj.imp()->setPrototype(<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>());
<a name="l00097"></a>00097 <span class="keywordtype">bool</span> exists = thisObj.<a class="code" href="classKJS_1_1Object.html#a8c0f1def86d09e32d8df1e27c3201922" title="Checks to see whether the object (or any object in it's prototype chain) has a property with the spec...">hasProperty</a>(exec,propertyName);
<a name="l00098"></a>00098 thisObj.imp()->setPrototype(tempProto);
<a name="l00099"></a>00099 <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>(exists ? BooleanImp::staticTrue : BooleanImp::staticFalse);
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <span class="keywordflow">case</span> IsPrototypeOf: {
<a name="l00102"></a>00102 <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 = args[0];
<a name="l00103"></a>00103 <span class="keywordflow">for</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#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(ObjectType); v = <a class="code" href="classKJS_1_1Object.html#ab12ea86cb49e21ea6c5547507f8d128e" title="Converts a Value into an Object.">Object::dynamicCast</a>(v).<a class="code" href="classKJS_1_1Object.html#a2cff3f0240090b1e18bb1fe0160ae7cd" title="Returns the prototype of this object.">prototype</a>()) {
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (v.imp() == thisObj.imp())
<a name="l00105"></a>00105 <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>(BooleanImp::staticTrue);
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 <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>(BooleanImp::staticFalse);
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 <span class="keywordflow">case</span> PropertyIsEnumerable: {
<a name="l00110"></a>00110 <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> propertyName(args[0].toString(exec));
<a name="l00111"></a>00111 ObjectImp *obj = <span class="keyword">static_cast<</span>ObjectImp*<span class="keyword">></span>(thisObj.imp());
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordtype">int</span> attributes;
<a name="l00114"></a>00114 <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 = obj->_prop.get(propertyName,attributes);
<a name="l00115"></a>00115 <span class="keywordflow">if</span> (v)
<a name="l00116"></a>00116 <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>((attributes & DontEnum) ?
<a name="l00117"></a>00117 BooleanImp::staticFalse : BooleanImp::staticTrue);
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keywordflow">if</span> (propertyName == specialPrototypePropertyName)
<a name="l00120"></a>00120 <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>(BooleanImp::staticFalse);
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keyword">const</span> <a class="code" href="structKJS_1_1HashEntry.html" title="An entry in a hash table.">HashEntry</a> *entry = obj->findPropertyHashEntry(propertyName);
<a name="l00123"></a>00123 <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>((entry && !(entry-><a class="code" href="structKJS_1_1HashEntry.html#a12c2b8d0dc49b3f26695c10a5a1a4781" title="attr is a set for flags (e.g.">attr</a> & DontEnum)) ?
<a name="l00124"></a>00124 BooleanImp::staticTrue : BooleanImp::staticFalse);
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Undefined.html" title="Represents an primitive Undefined value.">Undefined</a>();
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// ------------------------------ ObjectObjectImp --------------------------------</span>
<a name="l00132"></a>00132
<a name="l00133"></a>00133 ObjectObjectImp::ObjectObjectImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> * <span class="comment">/*exec*/</span>,
<a name="l00134"></a>00134 ObjectPrototypeImp *objProto,
<a name="l00135"></a>00135 <a class="code" href="classKJS_1_1FunctionPrototypeImp.html" title="The initial value of Function.prototype (and thus all objects created with the Function constructor)...">FunctionPrototypeImp</a> *funcProto)
<a name="l00136"></a>00136 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>(funcProto)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <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> protect(<span class="keyword">this</span>);
<a name="l00139"></a>00139 <span class="comment">// ECMA 15.2.3.1</span>
<a name="l00140"></a>00140 putDirect(prototypePropertyName, objProto, DontEnum|DontDelete|ReadOnly);
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// no. of arguments for constructor</span>
<a name="l00143"></a>00143 putDirect(lengthPropertyName, NumberImp::one(), ReadOnly|DontDelete|DontEnum);
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="keywordtype">bool</span> ObjectObjectImp::implementsConstruct()<span class="keyword"> const</span>
<a name="l00148"></a>00148 <span class="keyword"></span>{
<a name="l00149"></a>00149 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="comment">// ECMA 15.2.2</span>
<a name="l00153"></a>00153 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> ObjectObjectImp::construct(<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_1List.html" title="Native list type.">List</a> &args)
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 <span class="comment">// if no arguments have been passed ...</span>
<a name="l00156"></a>00156 <span class="keywordflow">if</span> (args.<a class="code" href="classKJS_1_1List.html#a6356629da9e2c8cff0e0cbe9f7f61bac">isEmpty</a>()) {
<a name="l00157"></a>00157 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> proto = exec-><a class="code" href="classKJS_1_1ExecState.html#af210e5fad440d91a939e71ccb2bf6be7" title="Returns the interpreter associated with the current scope's global object.">lexicalInterpreter</a>()-><a class="code" href="classKJS_1_1Interpreter.html#ac3b61de9e5220f2322c28c8c06bbb7a5" title="Returns the builtin "Object.prototype" object.">builtinObjectPrototype</a>();
<a name="l00158"></a>00158 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> result(<span class="keyword">new</span> ObjectImp(proto));
<a name="l00159"></a>00159 <span class="keywordflow">return</span> result;
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <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> arg = *(args.<a class="code" href="classKJS_1_1List.html#a28eebc11fbb2305edecf29f25a06f77e">begin</a>());
<a name="l00163"></a>00163 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> obj = <a class="code" href="classKJS_1_1Object.html#ab12ea86cb49e21ea6c5547507f8d128e" title="Converts a Value into an Object.">Object::dynamicCast</a>(arg);
<a name="l00164"></a>00164 <span class="keywordflow">if</span> (obj.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>())
<a name="l00165"></a>00165 <span class="keywordflow">return</span> obj;
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keywordflow">switch</span> (arg.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>()) {
<a name="l00168"></a>00168 <span class="keywordflow">case</span> StringType:
<a name="l00169"></a>00169 <span class="keywordflow">case</span> BooleanType:
<a name="l00170"></a>00170 <span class="keywordflow">case</span> NumberType:
<a name="l00171"></a>00171 <span class="keywordflow">return</span> arg.<a class="code" href="classKJS_1_1Value.html#a072d956ce72fd1387bacb27dc466239d" title="Performs the ToObject type conversion operation on this value (ECMA 9.9)">toObject</a>(exec);
<a name="l00172"></a>00172 <span class="keywordflow">default</span>:
<a name="l00173"></a>00173 assert(!<span class="stringliteral">"unhandled switch case in ObjectConstructor"</span>);
<a name="l00174"></a>00174 <span class="keywordflow">case</span> NullType:
<a name="l00175"></a>00175 <span class="keywordflow">case</span> UndefinedType:
<a name="l00176"></a>00176 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> proto = exec-><a class="code" href="classKJS_1_1ExecState.html#af210e5fad440d91a939e71ccb2bf6be7" title="Returns the interpreter associated with the current scope's global object.">lexicalInterpreter</a>()-><a class="code" href="classKJS_1_1Interpreter.html#ac3b61de9e5220f2322c28c8c06bbb7a5" title="Returns the builtin "Object.prototype" object.">builtinObjectPrototype</a>();
<a name="l00177"></a>00177 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a>(<span class="keyword">new</span> ObjectImp(proto));
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="keywordtype">bool</span> ObjectObjectImp::implementsCall()<span class="keyword"> const</span>
<a name="l00182"></a>00182 <span class="keyword"></span>{
<a name="l00183"></a>00183 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <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> ObjectObjectImp::call(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> &<span class="comment">/*thisObj*/</span>, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> &args)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 <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> result;
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> argList;
<a name="l00191"></a>00191 <span class="comment">// Construct a new Object</span>
<a name="l00192"></a>00192 <span class="keywordflow">if</span> (args.<a class="code" href="classKJS_1_1List.html#a6356629da9e2c8cff0e0cbe9f7f61bac">isEmpty</a>()) {
<a name="l00193"></a>00193 result = construct(exec,argList);
<a name="l00194"></a>00194 } <span class="keywordflow">else</span> {
<a name="l00195"></a>00195 <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> arg = args[0];
<a name="l00196"></a>00196 <span class="keywordflow">if</span> (arg.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == NullType || arg.<a class="code" href="classKJS_1_1Value.html#ae452f07da93d3888448158e634d71657" title="Returns the type of value.">type</a>() == UndefinedType) {
<a name="l00197"></a>00197 argList.<a class="code" href="classKJS_1_1List.html#a0754cb5a81b130c65ab13a4e9cff5c52" title="Append an object to the end of the list.">append</a>(arg);
<a name="l00198"></a>00198 result = construct(exec,argList);
<a name="l00199"></a>00199 } <span class="keywordflow">else</span>
<a name="l00200"></a>00200 result = arg.<a class="code" href="classKJS_1_1Value.html#a072d956ce72fd1387bacb27dc466239d" title="Performs the ToObject type conversion operation on this value (ECMA 9.9)">toObject</a>(exec);
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202 <span class="keywordflow">return</span> result;
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
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