IDL: make optional arguments (without default) explicit sometimes

Source/bindings/tests/results/V8TestTypedefs.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"
 #include "V8TestTypedefs.h"
 
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/Optional.h"
 #include "bindings/core/v8/V8DOMConfiguration.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8ObjectConstructor.h"
 #include "bindings/tests/v8/V8TestCallbackInterface.h"
 #include "bindings/tests/v8/V8TestInterface.h"
 #include "bindings/tests/v8/V8TestInterfaceEmpty.h"
 #include "core/dom/ContextFeatures.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ skipping 73 matching lines @@
 
 static void TestTypedefsForceSetAttributeOnThisCallback(v8::Local<v8::String> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
 {
     TestTypedefsV8Internal::TestTypedefsForceSetAttributeOnThis(name, v8Value, info);
 }
 
 static void voidMethodArrayOfLongsArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestTypedefs* impl = V8TestTypedefs::toNative(info.Holder());
     Vector<int> arrayOfLongsArg;
+    bool arrayOfLongsArgMissing = false;
     {
         v8::TryCatch block;
         V8RethrowTryCatchScope rethrow(block);
-        if (UNLIKELY(info.Length() <= 0)) {
-            impl->voidMethodArrayOfLongsArg();
-            return;
+        if (!info[0]->IsUndefined()) {
+            TONATIVE_VOID_INTERNAL(arrayOfLongsArg, toNativeArray<int>(info[0], 1, info.GetIsolate()));
+        } else {
+            arrayOfLongsArgMissing = true;
         }
-        TONATIVE_VOID_INTERNAL(arrayOfLongsArg, toNativeArray<int>(info[0], 1, info.GetIsolate()));
     }
-    impl->voidMethodArrayOfLongsArg(arrayOfLongsArg);
+    impl->voidMethodArrayOfLongsArg(Optional<Vector<int> >(arrayOfLongsArg, arrayOfLongsArgMissing));
 }
 
 static void voidMethodArrayOfLongsArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestTypedefsV8Internal::voidMethodArrayOfLongsArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void voidMethodFloatArgStringArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 284 matching lines @@
     fromInternalPointer(internalPointer)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestTypedefs* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink