IDL: Drop value conversion (V8 -> C++) macros from generated code

Source/bindings/tests/results/core/V8TestInterface.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #if ENABLE(CONDITION)
 #include "V8TestInterface.h"
 
@@ skipping 91 matching lines @@
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::doubleAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void doubleAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "doubleAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(double, cppValue, toRestrictedDouble(v8Value, exceptionState), exceptionState);
+    double cppValue = toRestrictedDouble(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setDoubleAttribute(cppValue);
 }
 
 static void doubleAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::doubleAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void floatAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValue(info, impl->floatAttribute());
 }
 
 static void floatAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::floatAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void floatAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "floatAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(float, cppValue, toRestrictedFloat(v8Value, exceptionState), exceptionState);
+    float cppValue = toRestrictedFloat(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setFloatAttribute(cppValue);
 }
 
 static void floatAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::floatAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void unrestrictedDoubleAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValue(info, impl->unrestrictedDoubleAttribute());
 }
 
 static void unrestrictedDoubleAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::unrestrictedDoubleAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void unrestrictedDoubleAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "unrestrictedDoubleAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(double, cppValue, toDouble(v8Value, exceptionState), exceptionState);
+    double cppValue = toDouble(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setUnrestrictedDoubleAttribute(cppValue);
 }
 
 static void unrestrictedDoubleAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::unrestrictedDoubleAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void unrestrictedFloatAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValue(info, impl->unrestrictedFloatAttribute());
 }
 
 static void unrestrictedFloatAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::unrestrictedFloatAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void unrestrictedFloatAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "unrestrictedFloatAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(float, cppValue, toFloat(v8Value, exceptionState), exceptionState);
+    float cppValue = toFloat(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setUnrestrictedFloatAttribute(cppValue);
 }
 
 static void unrestrictedFloatAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::unrestrictedFloatAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void testEnumAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueString(info, impl->testEnumAttribute(), info.GetIsolate());
 }
 
 static void testEnumAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::testEnumAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void testEnumAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     String string = cppValue;
     if (!(string == "" || string == "EnumValue1" || string == "EnumValue2" || string == "EnumValue3"))
         return;
     impl->setTestEnumAttribute(cppValue);
 }
 
 static void testEnumAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::testEnumAttributeAttributeSetter(v8Value, info);
@@ skipping 13 matching lines @@
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::stringOrDoubleAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void stringOrDoubleAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "stringOrDoubleAttribute", "TestInterface", holder, info.GetIsolate());
+    TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     StringOrDouble cppValue;
-    TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE_ARGINTERNAL(V8StringOrDouble::toImpl(info.GetIsolate(), v8Value, cppValue, exceptionState), exceptionState);
+    V8StringOrDouble::toImpl(info.GetIsolate(), v8Value, cppValue, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setStringOrDoubleAttribute(cppValue);
 }
 
 static void stringOrDoubleAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::stringOrDoubleAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void staticStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8SetReturnValueString(info, TestInterfaceImplementation::staticStringAttribute(), info.GetIsolate());
 }
 
 static void staticStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::staticStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void staticStringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestInterfaceImplementation::setStaticStringAttribute(cppValue);
 }
 
 static void staticStringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::staticStringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void alwaysExposedAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueInt(info, impl->alwaysExposedAttribute());
 }
 
 static void alwaysExposedAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::alwaysExposedAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void alwaysExposedAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "alwaysExposedAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setAlwaysExposedAttribute(cppValue);
 }
 
 static void alwaysExposedAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::alwaysExposedAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void workerExposedAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueInt(info, impl->workerExposedAttribute());
 }
 
 static void workerExposedAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::workerExposedAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void workerExposedAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "workerExposedAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setWorkerExposedAttribute(cppValue);
 }
 
 static void workerExposedAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::workerExposedAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void windowExposedAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueInt(info, impl->windowExposedAttribute());
 }
 
 static void windowExposedAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::windowExposedAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void windowExposedAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "windowExposedAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     impl->setWindowExposedAttribute(cppValue);
 }
 
 static void windowExposedAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::windowExposedAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
@@ skipping 51 matching lines @@
 
 static void implementsStaticStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implementsStaticStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implementsStaticStringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestInterfaceImplementation::setImplementsStaticStringAttribute(cppValue);
 }
 
 static void implementsStaticStringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implementsStaticStringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
@@ skipping 22 matching lines @@
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implementsStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implementsStringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     impl->setImplementsStringAttribute(cppValue);
 }
 
 static void implementsStringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implementsStringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
@@ skipping 139 matching lines @@
 
 static void implements2StaticStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implements2StaticStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements2StaticStringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestImplements2::setImplements2StaticStringAttribute(cppValue);
 }
 
 static void implements2StaticStringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implements2StaticStringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements2StringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueString(info, TestImplements2::implements2StringAttribute(*impl), info.GetIsolate());
 }
 
 static void implements2StringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implements2StringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements2StringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestImplements2::setImplements2StringAttribute(*impl, cppValue);
 }
 
 static void implements2StringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implements2StringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements3StringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
     v8SetReturnValueString(info, TestImplements3Implementation::implements3StringAttribute(*impl), info.GetIsolate());
 }
 
 static void implements3StringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implements3StringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements3StringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestImplements3Implementation::setImplements3StringAttribute(*impl, cppValue);
 }
 
 static void implements3StringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implements3StringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements3StaticStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8SetReturnValueString(info, TestImplements3Implementation::implements3StaticStringAttribute(), info.GetIsolate());
 }
 
 static void implements3StaticStringAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::implements3StaticStringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void implements3StaticStringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     TestImplements3Implementation::setImplements3StaticStringAttribute(cppValue);
 }
 
 static void implements3StaticStringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::implements3StaticStringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
@@ skipping 14 matching lines @@
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialLongAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "partialLongAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     TestPartialInterface::setPartialLongAttribute(*impl, cppValue);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialLongAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::partialLongAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
@@ skipping 13 matching lines @@
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::partialStaticLongAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialStaticLongAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     ExceptionState exceptionState(ExceptionState::SetterContext, "partialStaticLongAttribute", "TestInterface", holder, info.GetIsolate());
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     TestPartialInterface::setPartialStaticLongAttribute(cppValue);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialStaticLongAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::partialStaticLongAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
@@ skipping 18 matching lines @@
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialCallWithExecutionContextLongAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "partialCallWithExecutionContextLongAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     ExecutionContext* executionContext = currentExecutionContext(info.GetIsolate());
     TestPartialInterface::setPartialCallWithExecutionContextLongAttribute(executionContext, *impl, cppValue);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialCallWithExecutionContextLongAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::partialCallWithExecutionContextLongAttributeAttributeSetter(v8Value, info);
@@ skipping 17 matching lines @@
     TestInterfaceImplementationV8Internal::partialPartialEnumTypeAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialPartialEnumTypeAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     String string = cppValue;
     if (!(string == "foo" || string == "bar"))
         return;
     TestPartialInterface::setPartialPartialEnumTypeAttribute(*impl, cppValue);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialPartialEnumTypeAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
@@ skipping 22 matching lines @@
     TestInterfaceImplementationV8Internal::stringAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void stringAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TOSTRING_VOID(V8StringResource<>, cppValue, v8Value);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return;
     V8TestInterface::PrivateScript::stringAttributeAttributeSetter(toLocalFrame(toFrameIfNotDetached(info.GetIsolate()->GetCurrentContext())), impl, cppValue);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void stringAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::stringAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
@@ skipping 12 matching lines @@
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::partial2LongAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void partial2LongAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     v8::Local<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "partial2LongAttribute", "TestInterface", holder, info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(holder);
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     TestPartialInterfaceImplementation::setPartial2LongAttribute(*impl, cppValue);
 }
 
 static void partial2LongAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::partial2LongAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void partial2StaticLongAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8SetReturnValueInt(info, TestPartialInterfaceImplementation::partial2StaticLongAttribute());
 }
 
 static void partial2StaticLongAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMGetter");
     TestInterfaceImplementationV8Internal::partial2StaticLongAttributeAttributeGetter(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void partial2StaticLongAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     ExceptionState exceptionState(ExceptionState::SetterContext, "partial2StaticLongAttribute", "TestInterface", holder, info.GetIsolate());
-    TONATIVE_VOID_EXCEPTIONSTATE(int, cppValue, toInt32(v8Value, exceptionState), exceptionState);
+    int cppValue = toInt32(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return;
     TestPartialInterfaceImplementation::setPartial2StaticLongAttribute(cppValue);
 }
 
 static void partial2StaticLongAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMSetter");
     TestInterfaceImplementationV8Internal::partial2StaticLongAttributeAttributeSetter(v8Value, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
@@ skipping 48 matching lines @@
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "voidMethodDoubleArgFloatArg", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         setMinimumArityTypeError(exceptionState, 2, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     double doubleArg;
     float floatArg;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(doubleArg, toRestrictedDouble(info[0], exceptionState), exceptionState);
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(floatArg, toRestrictedFloat(info[1], exceptionState), exceptionState);
+        doubleArg = toRestrictedDouble(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
+        floatArg = toRestrictedFloat(info[1], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     impl->voidMethodDoubleArgFloatArg(doubleArg, floatArg);
 }
 
 static void voidMethodDoubleArgFloatArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::voidMethodDoubleArgFloatArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "voidMethodUnrestrictedDoubleArgUnrestrictedFloatArg", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         setMinimumArityTypeError(exceptionState, 2, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     double unrestrictedDoubleArg;
     float unrestrictedFloatArg;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(unrestrictedDoubleArg, toDouble(info[0], exceptionState), exceptionState);
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(unrestrictedFloatArg, toFloat(info[1], exceptionState), exceptionState);
+        unrestrictedDoubleArg = toDouble(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
+        unrestrictedFloatArg = toFloat(info[1], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     impl->voidMethodUnrestrictedDoubleArgUnrestrictedFloatArg(unrestrictedDoubleArg, unrestrictedFloatArg);
 }
 
 static void voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::voidMethodUnrestrictedDoubleArgUnrestrictedFloatArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void voidMethodTestEnumArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 1)) {
         V8ThrowException::throwException(createMinimumArityTypeErrorForMethod(info.GetIsolate(), "voidMethodTestEnumArg", "TestInterface", 1, info.Length()), info.GetIsolate());
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     V8StringResource<> testEnumArg;
     {
-        TOSTRING_VOID_INTERNAL(testEnumArg, info[0]);
+        testEnumArg = info[0];
+        if (!testEnumArg.prepare())
+            return;
         String string = testEnumArg;
         if (!(string == "" || string == "EnumValue1" || string == "EnumValue2" || string == "EnumValue3")) {
             V8ThrowException::throwTypeError(info.GetIsolate(), ExceptionMessages::failedToExecute("voidMethodTestEnumArg", "TestInterface", "parameter 1 ('" + string + "') is not a valid enum value."));
             return;
         }
     }
     impl->voidMethodTestEnumArg(testEnumArg);
 }
 
 static void voidMethodTestEnumArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 116 matching lines @@
     TestInterfaceImplementationV8Internal::methodWithExposedAndRuntimeEnabledFlagMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void overloadMethodWithExposedAndRuntimeEnabledFlag1Method(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "overloadMethodWithExposedAndRuntimeEnabledFlag", "TestInterface", info.Holder(), info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     int longArg;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(longArg, toInt32(info[0], exceptionState), exceptionState);
+        longArg = toInt32(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     impl->overloadMethodWithExposedAndRuntimeEnabledFlag(longArg);
 }
 
 static void overloadMethodWithExposedAndRuntimeEnabledFlag2Method(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     V8StringResource<> string;
     {
-        TOSTRING_VOID_INTERNAL(string, info[0]);
+        string = info[0];
+        if (!string.prepare())
+            return;
     }
     impl->overloadMethodWithExposedAndRuntimeEnabledFlag(string);
 }
 
 static void overloadMethodWithExposedAndRuntimeEnabledFlag3Method(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     DOMWindow* window;
     {
         window = toDOMWindow(info.GetIsolate(), info[0]);
@@ skipping 34 matching lines @@
     default:
         break;
     }
     if (info.Length() < 1) {
         exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length()));
         exceptionState.throwIfNeeded();
         return;
     }
     exceptionState.throwTypeError("No function was found that matched the signature provided.");
     exceptionState.throwIfNeeded();
+    return;
 }
 
 static void overloadMethodWithExposedAndRuntimeEnabledFlagMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::overloadMethodWithExposedAndRuntimeEnabledFlagMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void methodWithExposedHavingRuntimeEnabldFlagMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 27 matching lines @@
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     impl->voidMethodPartialOverload();
 }
 
 static void voidMethodPartialOverload2Method(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "voidMethodPartialOverload", "TestInterface", info.Holder(), info.GetIsolate());
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     double doubleArg;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(doubleArg, toRestrictedDouble(info[0], exceptionState), exceptionState);
+        doubleArg = toRestrictedDouble(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     impl->voidMethodPartialOverload(doubleArg);
 }
 
 static void staticVoidMethodPartialOverload1Method(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation::staticVoidMethodPartialOverload();
 }
 
 static void promiseMethodPartialOverload1Method(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 39 matching lines @@
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "implementsComplexMethod", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 2)) {
         setMinimumArityTypeError(exceptionState, 2, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     V8StringResource<> strArg;
     TestInterfaceEmpty* testInterfaceEmptyArg;
     {
-        TOSTRING_VOID_INTERNAL(strArg, info[0]);
+        strArg = info[0];
+        if (!strArg.prepare())
+            return;
         testInterfaceEmptyArg = V8TestInterfaceEmpty::toImplWithTypeCheck(info.GetIsolate(), info[1]);
         if (!testInterfaceEmptyArg) {
             exceptionState.throwTypeError("parameter 2 is not of type 'TestInterfaceEmpty'.");
             exceptionState.throwIfNeeded();
             return;
         }
     }
     ExecutionContext* executionContext = currentExecutionContext(info.GetIsolate());
     RefPtr<TestInterfaceEmpty> result = impl->implementsComplexMethod(executionContext, strArg, testInterfaceEmptyArg, exceptionState);
     if (exceptionState.hadException()) {
@@ skipping 105 matching lines @@
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "partialVoidMethodLongArg", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
         setMinimumArityTypeError(exceptionState, 1, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     int longArg;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(longArg, toInt32(info[0], exceptionState), exceptionState);
+        longArg = toInt32(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     TestPartialInterface::partialVoidMethodLongArg(*impl, longArg);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void partialVoidMethodLongArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceImplementationV8Internal::partialVoidMethodLongArgMethod(info);
@@ skipping 58 matching lines @@
 {
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "shortMethodWithShortArgumentImplementedInPrivateScript", "TestInterface", info.Holder(), info.GetIsolate());
     if (UNLIKELY(info.Length() < 1)) {
         setMinimumArityTypeError(exceptionState, 1, info.Length());
         exceptionState.throwIfNeeded();
         return;
     }
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
     int value;
     {
-        TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(value, toInt16(info[0], exceptionState), exceptionState);
+        value = toInt16(info[0], exceptionState);
+        if (exceptionState.throwIfNeeded())
+            return;
     }
     int result = 0;
     if (!V8TestInterface::PrivateScript::shortMethodWithShortArgumentImplementedInPrivateScriptMethod(toLocalFrame(toFrameIfNotDetached(info.GetIsolate()->GetCurrentContext())), impl, value, &result))
         return;
     v8SetReturnValueInt(info, result);
 }
 #endif // ENABLE(PARTIAL_CONDITION)
 
 #if ENABLE(PARTIAL_CONDITION)
 static void shortMethodWithShortArgumentImplementedInPrivateScriptMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 216 matching lines @@
 static void indexedPropertyGetterCallback(uint32_t index, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMIndexedProperty");
     TestInterfaceImplementationV8Internal::indexedPropertyGetter(index, info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void indexedPropertySetter(uint32_t index, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
-    TOSTRING_VOID(V8StringResource<>, propertyValue, v8Value);
+    V8StringResource<> propertyValue = v8Value;
+    if (!propertyValue.prepare())
+        return;
     bool result = impl->anonymousIndexedSetter(index, propertyValue);
     if (!result)
         return;
     v8SetReturnValue(info, v8Value);
 }
 
 static void indexedPropertySetterCallback(uint32_t index, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMIndexedProperty");
     TestInterfaceImplementationV8Internal::indexedPropertySetter(index, v8Value, info);
@@ skipping 44 matching lines @@
 {
     if (!name->IsString())
         return;
     auto nameString = name.As<v8::String>();
     if (info.Holder()->HasRealNamedProperty(nameString))
         return;
     if (!info.Holder()->GetRealNamedPropertyInPrototypeChain(nameString).IsEmpty())
         return;
 
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
-    TOSTRING_VOID(V8StringResource<>, propertyName, nameString);
-    TOSTRING_VOID(V8StringResource<>, propertyValue, v8Value);
+    V8StringResource<> propertyName(nameString);
+    if (!propertyName.prepare())
+        return;
+    V8StringResource<> propertyValue = v8Value;
+    if (!propertyValue.prepare())
+        return;
     bool result = impl->anonymousNamedSetter(propertyName, propertyValue);
     if (!result)
         return;
     v8SetReturnValue(info, v8Value);
 }
 
 static void namedPropertySetterCallback(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMNamedProperty");
     TestInterfaceImplementationV8Internal::namedPropertySetter(name, v8Value, info);
@@ skipping 416 matching lines @@
 
     ScriptState::Scope scope(scriptState);
     v8::Local<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
 
     v8::Local<v8::Value> valueHandle = v8::Integer::New(scriptState->isolate(), value);
     v8::Local<v8::Value> argv[] = { valueHandle };
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "shortMethodWithShortArgumentImplementedInPrivateScript", "TestInterfaceImplementation", scriptState->context()->Global(), scriptState->isolate());
     v8::Local<v8::Value> v8Value = PrivateScriptRunner::runDOMMethod(scriptState, scriptStateInUserScript, "TestInterfaceImplementation", "shortMethodWithShortArgumentImplementedInPrivateScript", holder, 1, argv);
     if (v8Value.IsEmpty())
         return false;
-    TONATIVE_DEFAULT_EXCEPTIONSTATE(int, cppValue, toInt16(v8Value, exceptionState), exceptionState, false);
+    int cppValue = toInt16(v8Value, exceptionState);
+    if (exceptionState.throwIfNeeded())
+        return false;
     *result = cppValue;
     RELEASE_ASSERT(!exceptionState.hadException());
     return true;
 }
 
 bool V8TestInterface::PrivateScript::stringAttributeAttributeGetter(LocalFrame* frame, TestInterfaceImplementation* holderImpl, String* result)
 {
     if (!frame)
         return false;
     v8::HandleScope handleScope(toIsolate(frame));
     ScriptForbiddenScope::AllowUserAgentScript script;
     v8::Local<v8::Context> contextInPrivateScript = toV8Context(frame, DOMWrapperWorld::privateScriptIsolatedWorld());
     if (contextInPrivateScript.IsEmpty())
         return false;
     ScriptState* scriptState = ScriptState::from(contextInPrivateScript);
     ScriptState* scriptStateInUserScript = ScriptState::forMainWorld(frame);
     if (!scriptState->executionContext())
         return false;
 
     ScriptState::Scope scope(scriptState);
     v8::Local<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
 
     ExceptionState exceptionState(ExceptionState::GetterContext, "stringAttribute", "TestInterfaceImplementation", scriptState->context()->Global(), scriptState->isolate());
     v8::Local<v8::Value> v8Value = PrivateScriptRunner::runDOMAttributeGetter(scriptState, scriptStateInUserScript, "TestInterfaceImplementation", "stringAttribute", holder);
     if (v8Value.IsEmpty())
         return false;
-    TOSTRING_DEFAULT(V8StringResource<>, cppValue, v8Value, false);
+    V8StringResource<> cppValue = v8Value;
+    if (!cppValue.prepare())
+        return false;
     RELEASE_ASSERT(!exceptionState.hadException());
     *result = cppValue;
     return true;
 }
 
 bool V8TestInterface::PrivateScript::stringAttributeAttributeSetter(LocalFrame* frame, TestInterfaceImplementation* holderImpl, String cppValue)
 {
     if (!frame)
         return false;
     v8::HandleScope handleScope(toIsolate(frame));
@@ skipping 41 matching lines @@
 void V8TestInterface::registerPartial2VoidMethodMethodForPartialInterface(void (*method)(const v8::FunctionCallbackInfo<v8::Value>&))
 {
     TestInterfaceImplementationV8Internal::partial2VoidMethodMethodForPartialInterface = method;
 }
 void V8TestInterface::registerPartial2StaticVoidMethodMethodForPartialInterface(void (*method)(const v8::FunctionCallbackInfo<v8::Value>&))
 {
     TestInterfaceImplementationV8Internal::partial2StaticVoidMethodMethodForPartialInterface = method;
 }
 } // namespace blink
 #endif // ENABLE(CONDITION)