void CSTypeHelper::GenNativeFunctionParameterSignature(JSBFunction* function, String& sig)
{
    JSBClass* klass = function->GetClass();

    const Vector<JSBFunctionType*>& parameters = function->GetParameters();

    Vector<String> args;

    if (!function->IsConstructor() && !function->IsStatic())
    {
        args.Push(ToString("%s* self", klass->GetNativeName().CString()));
    }

    if (parameters.Size())
    {
        for (unsigned int i = 0; i < parameters.Size(); i++)
        {
            JSBFunctionType* ptype = parameters.At(i);

            // ignore "Context" parameters
            if (ptype->type_->asClassType())
            {
                JSBClassType* classType = ptype->type_->asClassType();
                JSBClass* klass = classType->class_;
                if (klass->GetName() == "Context")
                {
                    continue;
                }

                args.Push(ToString("%s* %s", klass->GetNativeName().CString(), ptype->name_.CString()));
            }
            else
            {
                args.Push(CSTypeHelper::GetNativeTypeString(ptype) + " " + ptype->name_);
            }

        }
    }

    if (function->GetReturnClass() && function->GetReturnClass()->IsNumberArray())
    {
        args.Push(ToString("%s* returnValue", function->GetReturnClass()->GetNativeName().CString()));
    }

    if (function->GetReturnType())
    {
        JSBVectorType* vtype = function->GetReturnType()->type_->asVectorType();

        if (vtype)
        {
            args.Push("ScriptVector* returnValue");
        }
    }

    sig.Join(args, ", ");

}
String CSTypeHelper::GetNativeFunctionSignature(JSBFunction* function, String& returnType)
{

    if (function->Skip())
        return String::EMPTY;

    if (function->IsDestructor())
        return String::EMPTY;

    if (OmitFunction(function))
        return String::EMPTY;

    JSBClass* klass = function->GetClass();
    JSBPackage* package = klass->GetPackage();
    String fname = function->IsConstructor() ? "Constructor" : function->GetName();

    returnType = "void";

    if (function->IsConstructor())
    {
        returnType = "RefCounted*";
    }
    else if (function->GetReturnType())
    {
        if (function->IsConstructor())
        {
            returnType = ToString("%s*", klass->GetNativeName().CString());
        }
        else if (function->GetReturnClass())
        {
            if (!function->GetReturnClass()->IsNumberArray())
            {
                returnType = ToString("const %s*", function->GetReturnClass()->GetNativeName().CString());
            }
        }
        else if (function->GetReturnType()->type_->asStringHashType())
        {
            returnType = "unsigned";
        }
        else
        {
            returnType = ToString("%s", CSTypeHelper::GetNativeTypeString(function->GetReturnType()).CString());

            // ScriptVector is handled by a out parameter
            if (returnType.Contains("ScriptVector"))
                returnType = "void";
        }
    }


    String sig;
    GenNativeFunctionParameterSignature(function, sig);

    String functionSig = ToString("csb_%s_%s_%s_%u(%s)",
                package->GetName().CString(), klass->GetName().CString(),
                fname.CString(), function->GetID(), sig.CString());

    return functionSig;
}
void JSBModuleWriter::WriteClassDeclaration(String& source)
{
    Vector<SharedPtr<JSBClass>> classes = module_->classes_.Values();

    source += "static void jsb_declare_classes(JSVM* vm)\n{\n";

    source += "duk_context* ctx = vm->GetJSContext();\n";

    String packageName = module_->GetPackage()->GetName();

    for (unsigned i = 0; i < classes.Size(); i++)
    {
        JSBClass* klass = classes.At(i);

        if (klass->IsNumberArray())
            continue;

        source.AppendWithFormat("   js_class_declare<%s>(vm, \"%s\", \"%s\", jsb_constructor_%s);\n", klass->GetNativeName().CString(), packageName.CString(), klass->GetName().CString(), klass->GetName().CString());

        if (klass->HasProperties())
        {
            source.AppendWithFormat("js_class_push_propertyobject(vm, \"%s\", \"%s\");\n", packageName.CString(), klass->GetName().CString());

            Vector<String> pnames;
            klass->GetPropertyNames(pnames);

            for (unsigned j = 0; j < pnames.Size(); j++)
            {
                JSBProperty* prop = klass->GetProperty(pnames[j]);

                source.Append("duk_push_object(ctx);\n");

                if (prop->getter_ && !prop->getter_->Skip())
                {
                    source.AppendWithFormat("duk_push_c_function(ctx, jsb_class_%s_%s, 0);\n",
                                            klass->GetName().CString(), prop->getter_->GetName().CString());
                    source.Append("duk_put_prop_string(ctx, -2, \"get\");\n");
                }
                if (prop->setter_ && !prop->setter_->Skip())
                {
                    source.AppendWithFormat("duk_push_c_function(ctx, jsb_class_%s_%s, 1);\n",
                                            klass->GetName().CString(), prop->setter_->GetName().CString());
                    source.Append("duk_put_prop_string(ctx, -2, \"set\");\n");
                }

                String propertyName = prop->GetCasePropertyName();
                source.AppendWithFormat("duk_put_prop_string(ctx, -2, \"%s\");\n", propertyName.CString());

            }

            source.Append("duk_pop(ctx);\n");

        }
    }

    source += "\n}\n\n";

}
void CSFunctionWriter::WriteNativeFunction(String& source)
{
    JSBClass* klass = function_->GetClass();
    JSBPackage* package = klass->GetPackage();
    String fname = function_->IsConstructor() ? "Constructor" : function_->GetName();

    String returnType;
    String functionSig = CSTypeHelper::GetNativeFunctionSignature(function_, returnType);

    String line;

    line = ToString("ATOMIC_EXPORT_API %s %s\n",
                    returnType.CString(), functionSig.CString());

    source += IndentLine(line);

    source += IndentLine("{\n");

    Indent();


    source += "\n";

    bool returnValue = false;
    bool sharedPtrReturn = false;

    String returnStatement;

    if (returnType == "const char*")
    {
        returnValue = true;
        source += IndentLine("static String returnValue;\n");
        returnStatement = "returnValue = ";
    }
    else if (function_->GetReturnClass() && function_->GetReturnClass()->IsNumberArray())
    {
        returnStatement = "*returnValue = ";
    }
    else if (function_->GetReturnClass() && function_->GetReturnType()->isSharedPtr_)
    {
        returnStatement = ToString("SharedPtr<%s> returnValue = ", function_->GetReturnClass()->GetNativeName().CString());
        sharedPtrReturn = true;
    }
    else
    {
        if (returnType != "void")
        {
            returnStatement = "return ";
        }
    }

    String callSig;
    GenNativeCallParameters(callSig);
    if (!function_->isConstructor_)
    {
        if (function_->IsStatic())
        {
            line = ToString("%s%s::%s(%s);\n", returnStatement.CString(), klass->GetNativeName().CString(), function_->GetName().CString(), callSig.CString());
        }
        else
        {
            line = ToString("%sself->%s(%s);\n", returnStatement.CString(), function_->GetName().CString(), callSig.CString());
        }

    }
    else
    {
        if (klass->IsAbstract())
        {
            line = "return 0; // Abstract Class\n";
        }
        else if (klass->IsObject())
        {
            if (callSig.Length())
                line = ToString("return new %s(NETCore::GetContext(), %s);\n", klass->GetNativeName().CString(), callSig.CString());
            else
                line = ToString("return new %s(NETCore::GetContext());\n", klass->GetNativeName().CString());
        }
        else
        {
            line = ToString("return new %s(%s);\n", klass->GetNativeName().CString(), callSig.CString());
        }
    }

    source += IndentLine(line);

    if (sharedPtrReturn)
    {
        source += IndentLine("returnValue->AddRef();\n");
        source += IndentLine("return returnValue;\n");
    }
    else if (returnType == "const char*")
    {
        source += IndentLine("return returnValue.CString();\n");
    }

    Dedent();

    source += IndentLine("}\n");

    source += "\n";

}
void JSFunctionWriter::WriteParameterMarshal(String& source)
{
    // generate args
    const Vector<JSBFunctionType*>& parameters = function_->GetParameters();

    int cparam = 0;
    if (parameters.Size())
    {
        for (unsigned int i = 0; i < parameters.Size(); i++, cparam++)
        {
            JSBFunctionType * ptype = parameters.At(i);

            // ignore "Context" parameters
            if (ptype->type_->asClassType())
            {
                JSBClassType* classType = ptype->type_->asClassType();
                JSBClass* klass = classType->class_;
                if (klass->GetName() == "Context")
                {
                    cparam--;
                    continue;
                }

            }

            String pstring = ptype->ToArgString(cparam);
            const String& init = ptype->initializer_;

            if (ptype->type_->asClassType())
            {
                JSBClassType* classType = ptype->type_->asClassType();

                JSBClass* klass = classType->class_;

                if (!klass->IsNumberArray())
                {
                    if (init.Length())
                    {
                        source.AppendWithFormat("%s = duk_get_top(ctx) >= %i ? js_to_class_instance<%s>(ctx, %i, 0) : %s;\n",
                                                pstring.CString(), cparam + 1, klass->GetNativeName().CString(), cparam, init.CString());
                    }
                    else
                    {
                        source.AppendWithFormat("%s = js_to_class_instance<%s>(ctx, %i, 0);\n",
                                                pstring.CString(), klass->GetNativeName().CString(), cparam);
                    }
                }
                else
                {
                    int elements = klass->GetNumberArrayElements();
                    String elementType = klass->GetArrayElementType();
                    source.AppendWithFormat("%s arrayData%i[%i];\n", elementType.CString(), cparam, elements);

                    if (init.Length())
                    {
                        source.AppendWithFormat("const %s& defaultArg%i = %s;\n", klass->GetNativeName().CString(), cparam,  init.CString());
                        source.AppendWithFormat("if (duk_get_top(ctx) >= %i) {\n", cparam + 1);
                    }

                    for (int j = 0; j < elements; j++)
                    {
                        source.AppendWithFormat("duk_get_prop_index(ctx, %i, %i);\n", cparam, j);
                        source.AppendWithFormat("arrayData%i[%i] = (%s) duk_to_number(ctx, -1);\n", cparam, j, elementType.CString());
                    }

                    source.AppendWithFormat("duk_pop_n(ctx, %i);\n", elements);

                    if (init.Length())
                    {
                        source.Append("}\n");

                        source.AppendWithFormat("%s __arg%i(duk_get_top(ctx) >= %i ? (const %s *) arrayData%i : defaultArg%i.Data());\n",
                                                klass->GetNativeName().CString(), cparam, cparam + 1, elementType.CString(), cparam, cparam);
                    }
                    else
                    {
                        source.AppendWithFormat("%s __arg%i(arrayData%i);\n", klass->GetNativeName().CString(), cparam, cparam);
                    }

                }

            }
            else if (ptype->type_->asStringType() || ptype->type_->asStringHashType())
            {
                if (init.Length())
                {
                    source.AppendWithFormat("%s = duk_get_top(ctx) >= %i ? duk_to_string(ctx, %i) : %s;\n", pstring.CString(), cparam + 1, cparam, init.CString());
                }
                else
                {
                    source.AppendWithFormat("%s = duk_to_string(ctx, %i);\n", pstring.CString(),  cparam);

                }
            }
            else if (ptype->type_->asHeapPtrType())
            {
                if (init.Length())
                {
                    source.AppendWithFormat("%s = duk_get_top(ctx) >= %i ? duk_get_heapptr(ctx, %i) : %s;\n", pstring.CString(), cparam + 1, cparam, init.CString());
                }
                else
                {
                    source.AppendWithFormat("%s = duk_get_heapptr(ctx, %i);\n", pstring.CString(),  cparam);

                }
            }
            else if (ptype->type_->asPrimitiveType())
            {
                JSBPrimitiveType* prtype = ptype->type_->asPrimitiveType();

                if (prtype->kind_ == JSBPrimitiveType::Bool)
                {
                    if (init.Length())
                    {
                        source.AppendWithFormat("bool __arg%i = duk_get_top(ctx) >= %i ? (duk_to_boolean(ctx, %i) ? true : false) : %s;\n",
                                                cparam,  cparam + 1,   cparam, init.CString());
                    }
                    else
                    {
                        source.AppendWithFormat("bool __arg%i = duk_to_boolean(ctx, %i) ? true : false;\n",  cparam,  cparam);
                    }
                }
                else
                {
                    if (init.Length())
                    {
                        source.AppendWithFormat("double __arg%i = duk_get_top(ctx) >= %i ? (duk_to_number(ctx, %i)) : %s;\n",
                                                cparam,  cparam + 1,   cparam, init.CString());

                    }
                    else
                    {
                        source.AppendWithFormat("double __arg%i = duk_to_number(ctx, %i);\n",  cparam,  cparam);
                    }
                }

            }
            else if (ptype->type_->asEnumType())
            {
                JSBEnumType* etype = ptype->type_->asEnumType();

                if (init.Length())
                {
                    source.AppendWithFormat("%s __arg%i = duk_get_top(ctx) >= %i ? ((%s) ((int) duk_to_number(ctx, %i))) : %s;\n", etype->enum_->GetName().CString(),
                                            cparam,  cparam + 1, etype->enum_->GetName().CString(),  cparam, init.CString());

                }
                else
                {
                    source.AppendWithFormat("%s __arg%i = (%s) ((int)duk_to_number(ctx, %i));\n", etype->enum_->GetName().CString(),
                                            cparam, etype->enum_->GetName().CString(),  cparam);

                }

            }
            else if (ptype->type_->asVectorType())
            {
                JSBVectorType* vtype = ptype->type_->asVectorType();

                if (vtype->isVariantVector_)
                {
                    // variant vector arguments
                    source.AppendWithFormat("VariantVector __arg%i;\nScriptVector* __scriptVectorArg%i = js_to_class_instance<ScriptVector>(ctx, %i, 0);\n", cparam, cparam, cparam);
                    if (!function_->HasMutatedReturn())
                        source.AppendWithFormat("__scriptVectorArg%i->AdaptToVector(__arg%i);\n", cparam, cparam);
                }
                else if (ptype->isConst_)
                {                    
                    // JS/TS side needs work for vector parameters, right now we support const (read only)
                    // Vector of String/StringHash

                    source.AppendWithFormat("%s __arg%i;\n", vtype->ToString().CString(), cparam);

                    source.AppendWithFormat("if (duk_get_top(ctx) >= %i)\n{\n", cparam + 1);
                    source.AppendWithFormat("duk_require_object_coercible(ctx, %i);\n", cparam);
                    source.AppendWithFormat("unsigned sz = duk_get_length(ctx, %i);\n", cparam);
                    source.AppendWithFormat("for (unsigned i = 0; i < sz; i++)\n{\n");

                    source.AppendWithFormat("duk_get_prop_index(ctx, 2, i);\n");

                    if (vtype->vectorType_->asStringType() || vtype->vectorType_->asStringHashType() )
                    {
                        source.AppendWithFormat("__arg%i.Push(duk_get_string(ctx, -1));\n", cparam);
                    }

                    source.AppendWithFormat("duk_pop(ctx);\n");

                    source.AppendWithFormat("\n}\n");

                    source.AppendWithFormat("\n}\n");

                }
            }
        }
    }
}
void JSFunctionWriter::WriteFunction(String& source)
{
    JSBClass* klass = function_->class_;

    source.AppendWithFormat("static int jsb_class_%s_%s(duk_context* ctx)\n{\n", klass->GetName().CString(), function_->name_.CString());

    WriteParameterMarshal(source);

    if (!function_->IsStatic())
    {
        source.Append("duk_push_this(ctx);\n");
        source.AppendWithFormat("%s* native = js_to_class_instance<%s>(ctx, -1, 0);\n", klass->GetNativeName().CString(), klass->GetNativeName().CString());
    }

    // declare return value;
    bool returnDeclared = false;

    JSBFunctionType* returnType = function_->returnType_;

    if (returnType)
    {
        if (returnType->type_->asStringType())
        {
            returnDeclared = true;
            source.Append("const String& retValue = ");
        }
        else if (returnType->type_->asPrimitiveType())
        {
            returnDeclared = true;

            JSBPrimitiveType* prtype = returnType->type_->asPrimitiveType();

            if (prtype->kind_ == JSBPrimitiveType::Bool)
            {
                source.Append("bool retValue = ");
            }
            else
            {
                source.Append("double retValue = ");
            }

        }
        else if (returnType->type_->asClassType())
        {
            JSBClassType* klassType = returnType->type_->asClassType();

            if (returnType->isTemplate_)
            {
                returnDeclared = true;
                source.AppendWithFormat("SharedPtr<%s> object = ", klassType->class_->GetNativeName().CString());
            }
            else if (klassType->class_->IsObject())
            {
                returnDeclared = true;
                source.Append("const Object* object = ");
            }
            else if (klassType->class_->IsNumberArray())
            {
                returnDeclared = true;
                if (returnType->isReference_)
                    source.AppendWithFormat("const %s& retValue = ", klassType->class_->GetName().CString());
                else
                    source.AppendWithFormat(" %s retValue = ", klassType->class_->GetName().CString());
            }
            else
            {
                returnDeclared = true;
                source.Append("const RefCounted* object = ");
            }
        }
        else if (returnType->type_->asEnumType())
        {
            JSBEnumType* enumType = returnType->type_->asEnumType();
            returnDeclared = true;
            source.AppendWithFormat("%s retValue = ", enumType->enum_->GetName().CString());
        }
        else if (returnType->type_->asVectorType())
        {
            returnDeclared = true;
            JSBVectorType* vtype = returnType->type_->asVectorType();
            source.AppendWithFormat("const %s& retValue = ", vtype->ToString().CString());
        }

    }

    const Vector<JSBFunctionType*>& parameters = function_->GetParameters();

    if (function_->IsStatic())
    {
        source.AppendWithFormat("%s::%s(", klass->GetNativeName().CString(), function_->name_.CString());
    }
    else
    {
        if (function_->HasMutatedReturn())
        {
            source.AppendWithFormat("__arg%i = native->%s(", parameters.Size() - 1, function_->name_.CString());
        }
        else
        {
            source.AppendWithFormat("native->%s(", function_->name_.CString());
        }

    }    

    unsigned numParams = parameters.Size();
    if (numParams && function_->HasMutatedReturn())
        numParams--;

    for (unsigned int i = 0; i < numParams; i++)
    {
        source.AppendWithFormat("__arg%i",  i);

        if (i != numParams - 1)
        {
            source += ", ";
        }
    }

    source += ");\n";

    if (!returnDeclared)
    {
        if (function_->HasMutatedReturn())
        {
            // this handles the VariantVector case currently, can be expanded
            source.AppendWithFormat("__scriptVectorArg%i->AdaptFromVector(__arg%i);\n", parameters.Size() - 1,  parameters.Size() - 1);
        }

        source += "return 0;\n";
    }
    else
    {
        if (returnType->type_->asStringType())
        {
            source.Append("duk_push_string(ctx, retValue.CString());\n");
        }
        else if (returnType->type_->asPrimitiveType())
        {
            JSBPrimitiveType* prtype = returnType->type_->asPrimitiveType();

            if (prtype->kind_ == JSBPrimitiveType::Bool)
            {
                source.Append("duk_push_boolean(ctx, retValue ? 1 : 0);\n");
            }
            else
            {
                source.Append("duk_push_number(ctx, retValue);\n");
            }

        }
        else if (returnType->type_->asClassType())
        {
            JSBClassType* klassType = returnType->type_->asClassType();

            if (klassType->class_->IsObject())
            {
                returnDeclared = true;
                source.Append("js_push_class_object_instance(ctx, object);\n");
            }
            else if (klassType->class_->IsNumberArray())
            {
                returnDeclared = true;
                String elementType = klassType->class_->GetArrayElementType();
                source.AppendWithFormat("const %s* arrayData = retValue.Data();\n", elementType.CString());
                source.Append("duk_push_array(ctx);\n");
                for (int i = 0; i < klassType->class_->GetNumberArrayElements(); i++)
                {
                    source.AppendWithFormat("duk_push_number(ctx, arrayData[%i]);\n", i);
                    source.AppendWithFormat("duk_put_prop_index(ctx, -2, %i);\n", i);
                }
            }
            else
            {
                returnDeclared = true;
                source.AppendWithFormat("js_push_class_object_instance(ctx, object, \"%s\");\n", klassType->class_->GetName().CString());
            }
        }
        else if (returnType->type_->asEnumType())
        {
            returnDeclared = true;
            source.Append("duk_push_number(ctx, (double) retValue);\n");
        }
        else if (returnType->type_->asVectorType())
        {
            JSBType* vectorType = returnType->type_->asVectorType()->vectorType_;

            source.Append("duk_push_array(ctx);\n");
            source.Append("for (unsigned i = 0; i < retValue.Size(); i++)\n{\n");

            if (vectorType->asClassType())
            {
                source.AppendWithFormat("js_push_class_object_instance(ctx, retValue[i], \"%s\");\n", vectorType->asClassType()->class_->GetName().CString());
            }
            else
            {
                source.Append("duk_push_string(ctx, retValue[i].CString());\n");
            }

            source.Append("duk_put_prop_index(ctx, -2, i);\n}\n");
        }



        source += "return 1;\n";
    }

    source.Append("}\n");
}
void JSFunctionWriter::WriteConstructor(String& source)
{

    // TODO: refactor this

    if (function_->name_ == "RefCounted")
    {
        source.Append("// finalizer may be called more than once\n" \
                      "static int jsb_finalizer_RefCounted(duk_context *ctx)\n" \
                      "{\n" \
                      "JSVM* vm =  JSVM::GetJSVM(ctx);\n" \
                      \
                      "duk_get_prop_index(ctx, 0, JS_INSTANCE_INDEX_FINALIZED);\n" \
                      \
                      "if (!duk_is_boolean(ctx, -1))\n" \
                      "{\n" \
                      "RefCounted* ref = vm->GetObjectPtr(duk_get_heapptr(ctx, 0));\n" \
                      "vm->RemoveObject(ref);\n" \
                      "ref->ReleaseRef();\n" \
                      "duk_push_boolean(ctx, 1);\n" \
                      "duk_put_prop_index(ctx, 0, JS_INSTANCE_INDEX_FINALIZED);\n" \
                      "}\n" \
                      \
                      "return 0;\n" \
                      "}\n");
    }

    JSBClass* klass = function_->class_;
    JSBClass* base = klass->GetBaseClass();


    // Constructor
    source.AppendWithFormat("duk_ret_t jsb_constructor_%s(duk_context* ctx)\n{\n", klass->GetName().CString());

    source.Append( "\nJSVM* vm = JSVM::GetJSVM(ctx);\n" \
                   "duk_push_this(ctx);\n" \
                   "void *ptr = duk_get_heapptr(ctx, -1);\n" \
                   "duk_pop(ctx);\n\n");

    source.Append("   if (!vm->GetObjectPtr(ptr, true))\n   {\n");

    if (!klass->IsAbstract() && !klass->IsNumberArray())
    {

        String marshal;
        WriteParameterMarshal(marshal);

        String sparams;
        int cparam = 0;

        const Vector<JSBFunctionType*>& parameters = function_->GetParameters();

        for (unsigned i = 0; i < parameters.Size(); i++, cparam++)
        {
            JSBFunctionType * ptype = parameters.At(i);

            String sarg;

            if (ptype->type_->asClassType())
            {
                JSBClassType* classType = ptype->type_->asClassType();
                JSBClass* klass = classType->class_;
                if (klass->GetName() == "Context")
                {
                    sarg = "vm->GetContext()";
                    cparam--;
                }

            }

            if (!sarg.Length())
            {
                sarg.AppendWithFormat("__arg%i", cparam);
            }

            sparams += sarg;

            if (i + 1 < parameters.Size())
                sparams += ", ";

        }

        source.AppendWithFormat("if (!duk_get_top(ctx) || !duk_is_pointer(ctx, 0))\n"\
            "{\n"\
            "%s\n"\
            "%s* native = new %s(%s);\n" \
            "vm->AddObject(ptr, native, INSTANTIATION_JAVASCRIPT);\n"\
            "}\n" \
            "else if (duk_is_pointer(ctx, 0))\n" \
            "{\n" \
            "RefCounted* rc = (RefCounted*) duk_get_pointer(ctx, 0);\n" \
            "vm->AddObject(ptr, rc, rc->GetInstantiationType());\n" \
            "}\n", marshal.CString(), klass->GetNativeName().CString(), klass->GetNativeName().CString(), sparams.CString());
    }
    else
    {
        if (klass->IsAbstract())
            source.Append("assert(0); // abstract class new'd\n");

        if (klass->IsNumberArray())
            source.Append("assert(0); // number array class new'd\n");

    }
    source.Append("   }\n");

    if (base)
    {
        String basePackage = base->GetModule()->GetPackage()->GetName();
        source.AppendWithFormat("   js_constructor_basecall(ctx, \"%s\", \"%s\");\n", basePackage.CString(), base->GetName().CString());
    }

    if (function_->name_ == "RefCounted")
    {
        source.Append("duk_push_this(ctx);\n "\
                      "duk_push_c_function(ctx, jsb_finalizer_RefCounted, 1);\n "\
                      "duk_set_finalizer(ctx, -2);\n "\
                      "duk_pop(ctx);\n");
    }

    source += "   return 0;";
    source += "\n}\n";

}
void CSFunctionWriter::WriteNativeFunction(String& source)
{
    JSBClass* klass = function_->GetClass();
    JSBPackage* package = klass->GetPackage();
    String fname = function_->IsConstructor() ? "Constructor" : function_->GetName();

    String returnType;
    String functionSig = CSTypeHelper::GetNativeFunctionSignature(function_, returnType);

    String line;

    line = ToString("ATOMIC_EXPORT_API %s %s\n",
                    returnType.CString(), functionSig.CString());

    source += IndentLine(line);

    source += IndentLine("{\n");

    Indent();

    source += "\n";

    // vector marshal

    bool hasVectorMarshal = false;
    const Vector<JSBFunctionType*>& fparams = function_->GetParameters();

    for (unsigned i = 0; i < fparams.Size(); i++)
    {
        JSBFunctionType* ftype = fparams[i];

        // Interface        
        JSBClass* interface = 0;
        if (ftype->type_->asClassType() && ftype->type_->asClassType()->class_->IsInterface())
        {
            // We need to downcast to the interface 
            // TODO: this assumes Object* is in hierarchy, how do we validate this?
            interface = ftype->type_->asClassType()->class_;
            line = ToString("%s = dynamic_cast<%s*>((Object*)%s);\n", ftype->name_.CString(), interface->GetNativeName().CString(), ftype->name_.CString());
            source += IndentLine(line);
        }

        // Vector
        JSBVectorType* vtype = ftype->type_->asVectorType();

        if (!vtype)
            continue;

        JSBClassType* classType = vtype->vectorType_->asClassType();

        if (!classType)
            continue;

        String className = classType->class_->GetName();

        String vectorMarshal;

        hasVectorMarshal = true;

        if (vtype->isPODVector_)
        {
            const String& pname = ftype->name_;
            source += IndentLine(ToString("PODVector<%s*> %s__vector;\n", className.CString(), pname.CString()));
            source += IndentLine(ToString("if (%s) %s->AdaptToVector<%s*>(%s__vector);\n", pname.CString(), pname.CString(), className.CString(), pname.CString()));
        }
        else
        {
            // vectorMarshal = ToString("PODVector<%s*> %s__vector", className.CString(), ftype->name_.CString());
        }

        if (vectorMarshal.Length())
        {
            source += IndentLine(vectorMarshal);
            vectorMarshal = String::EMPTY;
        }
    }


    bool returnValue = false;
    bool sharedPtrReturn = false;

    String returnStatement;

    if (returnType == "const char*")
    {
        returnValue = true;
        source += IndentLine("static String returnValue;\n");
        returnStatement = "returnValue = ";
    }
    else if (function_->GetReturnClass() && function_->GetReturnClass()->IsNumberArray())
    {
        returnStatement = "*returnValue = ";
    }
    else if (function_->GetReturnClass() && function_->GetReturnType()->isSharedPtr_)
    {
        returnStatement = ToString("SharedPtr<%s> returnValue = ", function_->GetReturnClass()->GetNativeName().CString());
        sharedPtrReturn = true;
    }
    else if (function_->GetReturnType() && function_->GetReturnType()->type_->asVectorType())
    {
        // we have an out parameter
        JSBVectorType* vtype = function_->GetReturnType()->type_->asVectorType();

        if (!vtype->vectorTypeIsSharedPtr_ && !vtype->vectorTypeIsWeakPtr_)
        {
            returnStatement = ToString("%sVector<%s*> returnValue__vector = ", vtype->isPODVector_ ? "POD" : "", vtype->vectorType_->asClassType()->class_->GetName().CString());
        }
        else
        {
            returnStatement = ToString("%sVector<%s<%s>> returnValue__vector = ",  vtype->isPODVector_ ? "POD" : "", vtype->vectorTypeIsSharedPtr_ ? "SharedPtr" : "WeakPtr", vtype->vectorType_->asClassType()->class_->GetName().CString());
        }
    }
    else
    {
        if (returnType != "void" && !hasVectorMarshal)
        {
            returnStatement = "return ";
        }
        else if (returnType != "void")
        {
            returnStatement = ToString("%s returnValue = ", returnType.CString());
        }
    }

    String callSig;
    GenNativeCallParameters(callSig);
    if (!function_->isConstructor_)
    {
        if (function_->IsStatic())
        {
            line = ToString("%s%s::%s(%s);\n", returnStatement.CString(), klass->GetNativeName().CString(), function_->GetName().CString(), callSig.CString());
        }
        else
        {
            line = ToString("%sself->%s(%s);\n", returnStatement.CString(), function_->GetName().CString(), callSig.CString());
        }

    }
    else
    {
        if (klass->IsAbstract())
        {
            line = "return 0; // Abstract Class\n";
        }
        else if (klass->IsObject())
        {
            if (callSig.Length())
                line = ToString("return new %s(NETCore::GetContext(), %s);\n", klass->GetNativeName().CString(), callSig.CString());
            else
                line = ToString("return new %s(NETCore::GetContext());\n", klass->GetNativeName().CString());
        }
        else
        {
            line = ToString("return new %s(%s);\n", klass->GetNativeName().CString(), callSig.CString());
        }
    }

    source += IndentLine(line);

    // Vector marshaling

    for (unsigned i = 0; i < fparams.Size(); i++)
    {
        JSBFunctionType* ftype = fparams[i];

        JSBVectorType* vtype = ftype->type_->asVectorType();

        if (!vtype)
            continue;

        JSBClassType* classType = vtype->vectorType_->asClassType();

        if (!classType)
            continue;

        String className = classType->class_->GetName();

        String vectorMarshal;

        if (vtype->isPODVector_)
        {
            const String& pname = ftype->name_;
            source += IndentLine(ToString("if (%s) %s->AdaptFromVector<%s*>(%s__vector);\n", pname.CString(), pname.CString(), className.CString(), pname.CString()));
        }
        else
        {
            // vectorMarshal = ToString("PODVector<%s*> %s__vector", className.CString(), ftype->name_.CString());
        }

        if (vectorMarshal.Length())
        {
            source += IndentLine(vectorMarshal);
            vectorMarshal = String::EMPTY;
        }
    }


    if (sharedPtrReturn)
    {
        source += IndentLine("if (returnValue.NotNull()) returnValue->AddRef();\n");
        source += IndentLine("return returnValue;\n");
    }
    else if (returnType == "const char*")
    {
        source += IndentLine("return returnValue.CString();\n");
    }
    else if (function_->GetReturnType() && function_->GetReturnType()->type_->asVectorType())
    {
        // we have an out parameter
        JSBVectorType* vtype = function_->GetReturnType()->type_->asVectorType();
        source += IndentLine("if (returnValue) returnValue->AdaptFromVector(returnValue__vector);\n");

    }
    else if (returnType != "void" && hasVectorMarshal)
    {
        source += IndentLine("return returnValue;\n");
    }

    Dedent();

    source += IndentLine("}\n");

    source += "\n";

}