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<div class="title">function_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) 1999-2001 Harri Porten (porten@kde.org)</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2003 Apple Computer, Inc.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00008"></a>00008 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00009"></a>00009 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00010"></a>00010 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00015"></a>00015 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> * License along with this library; if not, write to the Free Software</span>
<a name="l00019"></a>00019 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, 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">#include "function_object.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "internal.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "function.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "array_object.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "nodes.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "lexer.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "debugger.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "object.h"</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="preprocessor">#include <assert.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <stdio.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <string.h></span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">using namespace </span>KJS;
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">// ------------------------------ FunctionPrototypeImp -------------------------</span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 FunctionPrototypeImp::FunctionPrototypeImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec)
<a name="l00041"></a>00041 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>((<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>*)0)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <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="l00044"></a>00044 putDirect(toStringPropertyName,
<a name="l00045"></a>00045 <span class="keyword">new</span> FunctionProtoFuncImp(exec, <span class="keyword">this</span>, FunctionProtoFuncImp::ToString, 0, toStringPropertyName),
<a name="l00046"></a>00046 DontEnum);
<a name="l00047"></a>00047 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> applyPropertyName(<span class="stringliteral">"apply"</span>);
<a name="l00048"></a>00048 putDirect(applyPropertyName,
<a name="l00049"></a>00049 <span class="keyword">new</span> FunctionProtoFuncImp(exec, <span class="keyword">this</span>, FunctionProtoFuncImp::Apply, 2, applyPropertyName),
<a name="l00050"></a>00050 DontEnum);
<a name="l00051"></a>00051 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> callPropertyName(<span class="stringliteral">"call"</span>);
<a name="l00052"></a>00052 putDirect(callPropertyName,
<a name="l00053"></a>00053 <span class="keyword">new</span> FunctionProtoFuncImp(exec, <span class="keyword">this</span>, FunctionProtoFuncImp::Call, 1, callPropertyName),
<a name="l00054"></a>00054 DontEnum);
<a name="l00055"></a>00055 putDirect(lengthPropertyName, 0, DontDelete|ReadOnly|DontEnum);
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057
<a name="l00058"></a>00058 FunctionPrototypeImp::~FunctionPrototypeImp()
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordtype">bool</span> FunctionPrototypeImp::implementsCall()<span class="keyword"> const</span>
<a name="l00063"></a>00063 <span class="keyword"></span>{
<a name="l00064"></a>00064 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="comment">// ECMA 15.3.4</span>
<a name="l00068"></a>00068 <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> FunctionPrototypeImp::call(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a>* <span class="comment">/*exec*/</span>, <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> &<span class="comment">/*args*/</span>)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Undefined.html" title="Represents an primitive Undefined value.">Undefined</a>();
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// ------------------------------ FunctionProtoFuncImp -------------------------</span>
<a name="l00074"></a>00074
<a name="l00075"></a>00075 FunctionProtoFuncImp::FunctionProtoFuncImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a>* <span class="comment">/*exec*/</span>, <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="l00076"></a>00076 <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="l00077"></a>00077 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>(funcProto), id(i)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <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="l00080"></a>00080 putDirect(lengthPropertyName, len, DontDelete|ReadOnly|DontEnum);
<a name="l00081"></a>00081 ident = _ident;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordtype">bool</span> FunctionProtoFuncImp::implementsCall()<span class="keyword"> const</span>
<a name="l00086"></a>00086 <span class="keyword"></span>{
<a name="l00087"></a>00087 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <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> FunctionProtoFuncImp::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="l00091"></a>00091 {
<a name="l00092"></a>00092 <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="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordflow">switch</span> (<span class="keywordtype">id</span>) {
<a name="l00095"></a>00095 <span class="keywordflow">case</span> ToString: {
<a name="l00096"></a>00096 <span class="comment">// ### also make this work for internal functions</span>
<a name="l00097"></a>00097 <span class="keywordflow">if</span> (!thisObj.<a class="code" href="classKJS_1_1Value.html#acd8509ab6b7622c16fdf021803fdd2cb" title="Returns whether or not this is a valid value.">isValid</a>() || !thisObj.inherits(&InternalFunctionImp::info)) {
<a name="l00098"></a>00098 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span> fprintf(stderr,<span class="stringliteral">"attempted toString() call on null or non-function object\n"</span>);
<a name="l00100"></a>00100 <span class="preprocessor">#endif</span>
<a name="l00101"></a>00101 <span class="preprocessor"></span> <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,TypeError);
<a name="l00102"></a>00102 exec->setException(err);
<a name="l00103"></a>00103 <span class="keywordflow">return</span> err;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordflow">if</span> (thisObj.inherits(&DeclaredFunctionImp::info)) {
<a name="l00107"></a>00107 DeclaredFunctionImp *fi = <span class="keyword">static_cast<</span>DeclaredFunctionImp*<span class="keyword">></span>
<a name="l00108"></a>00108 (thisObj.imp());
<a name="l00109"></a>00109 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(<span class="stringliteral">"function "</span> + fi->name().ustring() + <span class="stringliteral">"("</span> +
<a name="l00110"></a>00110 fi->parameterString() + <span class="stringliteral">") "</span> + fi->body->toCode());
<a name="l00111"></a>00111 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (thisObj.inherits(&InternalFunctionImp::info) &&
<a name="l00112"></a>00112 !<span class="keyword">static_cast<</span><a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>*<span class="keyword">></span>(thisObj.imp())-><a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/namespaceKStdAccel.html#a737bc2466b1f000625fe8ebddffbb09d">name</a>().<a class="codeRef" href="qstring.html#isNull">isNull</a>()) {
<a name="l00113"></a>00113 result = <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(<span class="stringliteral">"\nfunction "</span> + static_cast<InternalFunctionImp*>(thisObj.imp())-><a class="codeRef" doxygen="kdecore.tag:../../kdecore/html/" href="../../kdecore/html/namespaceKStdAccel.html#a737bc2466b1f000625fe8ebddffbb09d">name</a>().ustring() + <span class="stringliteral">"() {\n"</span>
<a name="l00114"></a>00114 <span class="stringliteral">" [native code]\n}\n"</span>);
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 <span class="keywordflow">else</span> {
<a name="l00117"></a>00117 result = <a class="code" href="classKJS_1_1String.html" title="Represents an primitive String value.">String</a>(<span class="stringliteral">"[function]"</span>);
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 <span class="keywordflow">break</span>;
<a name="l00121"></a>00121 <span class="keywordflow">case</span> Apply: {
<a name="l00122"></a>00122 <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> thisArg = args[0];
<a name="l00123"></a>00123 <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> argArray = args[1];
<a name="l00124"></a>00124 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> func = thisObj;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keywordflow">if</span> (!func.<a class="code" href="classKJS_1_1Object.html#a7c08a913629973d9eddf5b7f53ef5200" title="Whether or not the object implements the call() method.">implementsCall</a>()) {
<a name="l00127"></a>00127 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,TypeError);
<a name="l00128"></a>00128 exec->setException(err);
<a name="l00129"></a>00129 <span class="keywordflow">return</span> err;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> applyThis;
<a name="l00133"></a>00133 <span class="keywordflow">if</span> (thisArg.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(NullType) || thisArg.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(UndefinedType))
<a name="l00134"></a>00134 applyThis = exec-><a class="code" href="classKJS_1_1ExecState.html#a3b3a2b4b312b33a64beeb974c948201c" title="Returns the interpreter associated with this execution state.">dynamicInterpreter</a>()-><a class="code" href="classKJS_1_1Interpreter.html#a6d4867616475f8bca54549e910ae1344" title="Returns the object that is used as the global object during all script execution performed by this in...">globalObject</a>();
<a name="l00135"></a>00135 <span class="keywordflow">else</span>
<a name="l00136"></a>00136 applyThis = thisArg.<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="l00137"></a>00137
<a name="l00138"></a>00138 <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> applyArgs;
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (!argArray.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(NullType) && !argArray.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(UndefinedType)) {
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (argArray.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(ObjectType) &&
<a name="l00141"></a>00141 (<a class="code" href="classKJS_1_1Object.html#ab12ea86cb49e21ea6c5547507f8d128e" title="Converts a Value into an Object.">Object::dynamicCast</a>(argArray).inherits(&ArrayInstanceImp::info) ||
<a name="l00142"></a>00142 <a class="code" href="classKJS_1_1Object.html#ab12ea86cb49e21ea6c5547507f8d128e" title="Converts a Value into an Object.">Object::dynamicCast</a>(argArray).inherits(&ArgumentsImp::info))) {
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> argArrayObj = <a class="code" href="classKJS_1_1Object.html#ab12ea86cb49e21ea6c5547507f8d128e" title="Converts a Value into an Object.">Object::dynamicCast</a>(argArray);
<a name="l00145"></a>00145 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length = argArrayObj.<a class="code" href="classKJS_1_1Object.html#a394b5e197af70d97568c5e17fe61b19f" title="Retrieves the specified property from the object.">get</a>(exec,lengthPropertyName).<a class="code" href="classKJS_1_1Value.html#a6aee2e9f36bd37afdfb2f0678f8cf69e" title="Performs the ToUInt32 type conversion operation on this value (ECMA 9.6)">toUInt32</a>(exec);
<a name="l00146"></a>00146 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < length; i++)
<a name="l00147"></a>00147 applyArgs.<a class="code" href="classKJS_1_1List.html#a0754cb5a81b130c65ab13a4e9cff5c52" title="Append an object to the end of the list.">append</a>(argArrayObj.<a class="code" href="classKJS_1_1Object.html#a394b5e197af70d97568c5e17fe61b19f" title="Retrieves the specified property from the object.">get</a>(exec,i));
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 <span class="keywordflow">else</span> {
<a name="l00150"></a>00150 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,TypeError);
<a name="l00151"></a>00151 exec->setException(err);
<a name="l00152"></a>00152 <span class="keywordflow">return</span> err;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 result = func.<a class="code" href="classKJS_1_1Object.html#ab07be3e90ba2ba8352a9609cc4ac703c" title="Calls this object as if it is a function.">call</a>(exec,applyThis,applyArgs);
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 <span class="keywordflow">break</span>;
<a name="l00158"></a>00158 <span class="keywordflow">case</span> Call: {
<a name="l00159"></a>00159 <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> thisArg = args[0];
<a name="l00160"></a>00160 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> func = thisObj;
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="keywordflow">if</span> (!func.<a class="code" href="classKJS_1_1Object.html#a7c08a913629973d9eddf5b7f53ef5200" title="Whether or not the object implements the call() method.">implementsCall</a>()) {
<a name="l00163"></a>00163 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,TypeError);
<a name="l00164"></a>00164 exec->setException(err);
<a name="l00165"></a>00165 <span class="keywordflow">return</span> err;
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> callThis;
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (thisArg.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(NullType) || thisArg.<a class="code" href="classKJS_1_1Value.html#a1704785fc8140c274b0e7ec03eb0dfe2" title="Checks whether or not the value is of a particular tpye.">isA</a>(UndefinedType))
<a name="l00170"></a>00170 callThis = exec-><a class="code" href="classKJS_1_1ExecState.html#a3b3a2b4b312b33a64beeb974c948201c" title="Returns the interpreter associated with this execution state.">dynamicInterpreter</a>()-><a class="code" href="classKJS_1_1Interpreter.html#a6d4867616475f8bca54549e910ae1344" title="Returns the object that is used as the global object during all script execution performed by this in...">globalObject</a>();
<a name="l00171"></a>00171 <span class="keywordflow">else</span>
<a name="l00172"></a>00172 callThis = thisArg.<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="l00173"></a>00173
<a name="l00174"></a>00174 result = func.<a class="code" href="classKJS_1_1Object.html#ab07be3e90ba2ba8352a9609cc4ac703c" title="Calls this object as if it is a function.">call</a>(exec,callThis,args.<a class="code" href="classKJS_1_1List.html#ad89e83022dc90d4ca73e602887a31468" title="Make a copy of the list, omitting the first element.">copyTail</a>());
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 <span class="keywordflow">break</span>;
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">return</span> result;
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="comment">// ------------------------------ FunctionObjectImp ----------------------------</span>
<a name="l00183"></a>00183
<a name="l00184"></a>00184 FunctionObjectImp::FunctionObjectImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a>* <span class="comment">/*exec*/</span>, <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="l00185"></a>00185 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>(funcProto)
<a name="l00186"></a>00186 {
<a name="l00187"></a>00187 <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="l00188"></a>00188 putDirect(prototypePropertyName, funcProto, DontEnum|DontDelete|ReadOnly);
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="comment">// no. of arguments for constructor</span>
<a name="l00191"></a>00191 putDirect(lengthPropertyName, NumberImp::one(), ReadOnly|DontDelete|DontEnum);
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194 FunctionObjectImp::~FunctionObjectImp()
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keywordtype">bool</span> FunctionObjectImp::implementsConstruct()<span class="keyword"> const</span>
<a name="l00199"></a>00199 <span class="keyword"></span>{
<a name="l00200"></a>00200 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="comment">// ECMA 15.3.2 The Function Constructor</span>
<a name="l00204"></a>00204 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> FunctionObjectImp::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="l00205"></a>00205 {
<a name="l00206"></a>00206 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> p(<span class="stringliteral">""</span>);
<a name="l00207"></a>00207 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> body;
<a name="l00208"></a>00208 <span class="keywordtype">int</span> argsSize = args.<a class="code" href="classKJS_1_1List.html#a69835b1e6671235343b0a17923b92c43">size</a>();
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (argsSize == 0) {
<a name="l00210"></a>00210 body = <span class="stringliteral">""</span>;
<a name="l00211"></a>00211 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (argsSize == 1) {
<a name="l00212"></a>00212 body = args[0].toString(exec);
<a name="l00213"></a>00213 } <span class="keywordflow">else</span> {
<a name="l00214"></a>00214 p = args[0].toString(exec);
<a name="l00215"></a>00215 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> k = 1; k < argsSize - 1; k++)
<a name="l00216"></a>00216 p += <span class="stringliteral">","</span> + args[k].toString(exec);
<a name="l00217"></a>00217 body = args[argsSize-1].toString(exec);
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="comment">// parse the source code</span>
<a name="l00221"></a>00221 SourceCode *source;
<a name="l00222"></a>00222 <span class="keywordtype">int</span> errLine;
<a name="l00223"></a>00223 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> errMsg;
<a name="l00224"></a>00224 FunctionBodyNode *progNode = Parser::parse(body.<a class="code" href="classKJS_1_1UString.html#a7dd595aa3385b55938014b32a0e88d0e">data</a>(),body.<a class="code" href="classKJS_1_1UString.html#a43b493879fd9d2d8e13039d1610cb3b9">size</a>(),&source,&errLine,&errMsg);
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">// notify debugger that source has been parsed</span>
<a name="l00227"></a>00227 Debugger *dbg = exec-><a class="code" href="classKJS_1_1ExecState.html#a3b3a2b4b312b33a64beeb974c948201c" title="Returns the interpreter associated with this execution state.">dynamicInterpreter</a>()->imp()->debugger();
<a name="l00228"></a>00228 <span class="keywordflow">if</span> (dbg) {
<a name="l00229"></a>00229 <span class="keywordtype">bool</span> cont = dbg->sourceParsed(exec,source->sid,body,errLine);
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (!cont) {
<a name="l00231"></a>00231 source->deref();
<a name="l00232"></a>00232 dbg->imp()->abort();
<a name="l00233"></a>00233 <span class="keywordflow">if</span> (progNode)
<a name="l00234"></a>00234 <span class="keyword">delete</span> progNode;
<a name="l00235"></a>00235 <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());
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 exec->interpreter()->imp()->addSourceCode(source);
<a name="l00240"></a>00240
<a name="l00241"></a>00241 <span class="comment">// no program node == syntax error - throw a syntax error</span>
<a name="l00242"></a>00242 <span class="keywordflow">if</span> (!progNode) {
<a name="l00243"></a>00243 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,SyntaxError,errMsg.<a class="code" href="classKJS_1_1UString.html#a2ac3d2b62d65d075f2d99bf7ed2ec366" title="Convert the Unicode string to plain ASCII chars chopping of any higher bytes.">ascii</a>(),errLine);
<a name="l00244"></a>00244 <span class="comment">// we can't return a Completion(Throw) here, so just set the exception</span>
<a name="l00245"></a>00245 <span class="comment">// and return it</span>
<a name="l00246"></a>00246 exec->setException(err);
<a name="l00247"></a>00247 source->deref();
<a name="l00248"></a>00248 <span class="keywordflow">return</span> err;
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 source->deref();
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <a class="code" href="classKJS_1_1ScopeChain.html" title="A scope chain object.">ScopeChain</a> scopeChain;
<a name="l00253"></a>00253 scopeChain.push(exec-><a class="code" href="classKJS_1_1ExecState.html#a3b3a2b4b312b33a64beeb974c948201c" title="Returns the interpreter associated with this execution state.">dynamicInterpreter</a>()-><a class="code" href="classKJS_1_1Interpreter.html#a6d4867616475f8bca54549e910ae1344" title="Returns the object that is used as the global object during all script execution performed by this in...">globalObject</a>().imp());
<a name="l00254"></a>00254 FunctionBodyNode *bodyNode = progNode;
<a name="l00255"></a>00255
<a name="l00256"></a>00256 <a class="code" href="classKJS_1_1FunctionImp.html" title="Implementation class for functions implemented in JS.">FunctionImp</a> *fimp = <span class="keyword">new</span> DeclaredFunctionImp(exec, <a class="code" href="classKJS_1_1Identifier.html#a0c11c80ccfb32ebe3ef21445d308765f" title="Creates an empty Identifier.">Identifier::null</a>(), bodyNode,
<a name="l00257"></a>00257 scopeChain);
<a name="l00258"></a>00258 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> ret(fimp); <span class="comment">// protect from GC</span>
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="comment">// parse parameter list. throw syntax error on illegal identifiers</span>
<a name="l00261"></a>00261 <span class="keywordtype">int</span> len = p.size();
<a name="l00262"></a>00262 <span class="keyword">const</span> <a class="code" href="structKJS_1_1UChar.html" title="Unicode character.">UChar</a> *c = p.data();
<a name="l00263"></a>00263 <span class="keywordtype">int</span> i = 0, params = 0;
<a name="l00264"></a>00264 <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a> param;
<a name="l00265"></a>00265 <span class="keywordflow">while</span> (i < len) {
<a name="l00266"></a>00266 <span class="keywordflow">while</span> (*c == <span class="charliteral">' '</span> && i < len)
<a name="l00267"></a>00267 c++, i++;
<a name="l00268"></a>00268 <span class="keywordflow">if</span> (Lexer::isIdentLetter(c->uc)) { <span class="comment">// else error</span>
<a name="l00269"></a>00269 param = <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a>(c, 1);
<a name="l00270"></a>00270 c++, i++;
<a name="l00271"></a>00271 <span class="keywordflow">while</span> (i < len && (Lexer::isIdentLetter(c->uc) ||
<a name="l00272"></a>00272 Lexer::isDecimalDigit(c->uc))) {
<a name="l00273"></a>00273 param += <a class="code" href="classKJS_1_1UString.html" title="Unicode string class.">UString</a>(c, 1);
<a name="l00274"></a>00274 c++, i++;
<a name="l00275"></a>00275 }
<a name="l00276"></a>00276 <span class="keywordflow">while</span> (i < len && *c == <span class="charliteral">' '</span>)
<a name="l00277"></a>00277 c++, i++;
<a name="l00278"></a>00278 <span class="keywordflow">if</span> (i == len) {
<a name="l00279"></a>00279 fimp->addParameter(<a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a>(param));
<a name="l00280"></a>00280 params++;
<a name="l00281"></a>00281 <span class="keywordflow">break</span>;
<a name="l00282"></a>00282 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*c == <span class="charliteral">','</span>) {
<a name="l00283"></a>00283 fimp->addParameter(<a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a>(param));
<a name="l00284"></a>00284 params++;
<a name="l00285"></a>00285 c++, i++;
<a name="l00286"></a>00286 <span class="keywordflow">continue</span>;
<a name="l00287"></a>00287 } <span class="comment">// else error</span>
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> err = <a class="code" href="classKJS_1_1Error.html#ad90381467b6e9fbae92c0975852048f2" title="Factory method for error objects.">Error::create</a>(exec,SyntaxError,
<a name="l00290"></a>00290 I18N_NOOP(<span class="stringliteral">"Syntax error in parameter list"</span>),
<a name="l00291"></a>00291 -1);
<a name="l00292"></a>00292 exec->setException(err);
<a name="l00293"></a>00293 <span class="keywordflow">return</span> err;
<a name="l00294"></a>00294 }
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> consArgs;
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> objCons = 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#ad467d009a322544d50af535549c9a18d" title="Returns the builtin "Object" object.">builtinObject</a>();
<a name="l00299"></a>00299 <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> prototype = objCons.<a class="code" href="classKJS_1_1Object.html#a85a7d585cbaeaef5bff34676bb748cc7" title="Creates a new object based on this object.">construct</a>(exec,<a class="code" href="classKJS_1_1List.html#ad30b847844813d118f8208dbfb6b5ad2" title="Returns a pointer to a static instance of an empty list.">List::empty</a>());
<a name="l00300"></a>00300 prototype.<a class="code" href="classKJS_1_1Object.html#aa67ec5ebaa19921db0fec1688378da2e" title="Sets the specified property.">put</a>(exec, constructorPropertyName, <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>(fimp), DontEnum|DontDelete|ReadOnly);
<a name="l00301"></a>00301 fimp->put(exec, prototypePropertyName, prototype, DontEnum|DontDelete|ReadOnly);
<a name="l00302"></a>00302 <span class="keywordflow">return</span> ret;
<a name="l00303"></a>00303 }
<a name="l00304"></a>00304
<a name="l00305"></a>00305 <span class="keywordtype">bool</span> FunctionObjectImp::implementsCall()<span class="keyword"> const</span>
<a name="l00306"></a>00306 <span class="keyword"></span>{
<a name="l00307"></a>00307 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00308"></a>00308 }
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="comment">// ECMA 15.3.1 The Function Constructor Called as a Function</span>
<a name="l00311"></a>00311 <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> FunctionObjectImp::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="l00312"></a>00312 {
<a name="l00313"></a>00313 <span class="keywordflow">return</span> construct(exec,args);
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315
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