V8 Binding: Introduce toNativeWithTypeCheck

Source/bindings/scripts/code_generator_v8.pm

 # Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 # Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
 # Copyright (C) 2006 Apple Computer, Inc.
 # Copyright (C) 2007, 2008, 2009, 2012 Google Inc.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
 # Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 # Copyright (C) 2012 Ericsson AB. All rights reserved.
@@ skipping 746 matching lines @@
     $header{class}->addHeader("class $v8ClassName {");
     $header{class}->addFooter("};");
 
     $header{classPublic}->add(<<END);
     static bool hasInstance(v8::Handle<v8::Value>, v8::Isolate*);
     static v8::Handle<v8::FunctionTemplate> domTemplate(v8::Isolate*, WrapperWorldType);
     static ${nativeType}* toNative(v8::Handle<v8::Object> object)
     {
         return fromInternalPointer(object->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex));
     }
+    static ${nativeType}* toNativeWithTypeCheck(v8::Isolate*, v8::Handle<v8::Value>);
     static const WrapperTypeInfo wrapperTypeInfo;
 END
 
     $header{classPublic}->add("    static void derefObject(void*);\n");
 
     if (NeedsVisitDOMWrapper($interface)) {
         $header{classPublic}->add("    static void visitDOMWrapper(void*, const v8::Persistent<v8::Object>&, v8::Isolate*);\n");
     }
 
     if (InheritsExtendedAttribute($interface, "ActiveDOMObject")) {
@@ skipping 3985 matching lines @@
     data->templateMap(currentWorldType).add(&wrapperTypeInfo, UnsafePersistent<v8::FunctionTemplate>(isolate, templ));
     return handleScope.Escape(templ);
 }
 
 bool ${v8ClassName}::hasInstance(v8::Handle<v8::Value> jsValue, v8::Isolate* isolate)
 {
     return V8PerIsolateData::from(isolate)->hasInstanceInMainWorld(&wrapperTypeInfo, jsValue)
         || V8PerIsolateData::from(isolate)->hasInstanceInNonMainWorld(&wrapperTypeInfo, jsValue);
 }
 
+${nativeType}* ${v8ClassName}::toNativeWithTypeCheck(v8::Isolate* isolate, v8::Handle<v8::Value> value)
+{
+    return hasInstance(value, isolate) ? fromInternalPointer(v8::Handle<v8::Object>::Cast(value)->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)) : 0;
+}
+
 END
 
     if (@perContextEnabledAttributes) {
         my $code = "";
         $code .= <<END;
 void ${v8ClassName}::installPerContextEnabledProperties(v8::Handle<v8::Object> instanceTemplate, ${nativeType}* impl, v8::Isolate* isolate)
 {
     v8::Local<v8::Object> prototypeTemplate = v8::Local<v8::Object>::Cast(instanceTemplate->GetPrototype());
 END
 
@@ skipping 848 matching lines @@
         if (IsRefPtrType($arrayOrSequenceType)) {
             AddToImplIncludes("V8${arrayOrSequenceType}.h");
             return "(toRefPtrNativeArray<${arrayOrSequenceType}, V8${arrayOrSequenceType}>($value, $argIndexOrZero, $getIsolate))";
         }
         return "toNativeArray<" . GetNativeType($arrayOrSequenceType) . ">($value, $argIndexOrZero, $getIsolate)";
     }
 
     AddIncludesForType($type);
 
     AddToImplIncludes("V8${type}.h");
-    return "V8${type}::hasInstance($value, $getIsolate) ? V8${type}::toNative(v8::Handle<v8::Object>::Cast($value)) : 0";
+    return "V8${type}::toNativeWithTypeCheck(info.GetIsolate(), $value)";
 }
 
 sub IsUnionType
 {
     my $type = shift; # string or UnionType
     if(ref($type) eq "UnionType") {
         die "Currently only 2 values of non-union type is supported as union type.\n" unless @{$type->unionMemberTypes} == 2;
         return 1;
     }
     return 0;
@@ skipping 829 matching lines @@
         if ($parameter->type eq "SerializedScriptValue") {
             return 1;
         } elsif (IsIntegerType($parameter->type)) {
             return 1;
         }
     }
     return 0;
 }
 
 1;