IDL: make optional arguments (without default) explicit sometimes

Source/bindings/tests/results/V8TestInterfaceNode.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 "V8TestInterfaceNode.h"
 
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/Optional.h"
 #include "bindings/core/v8/V8AbstractEventListener.h"
 #include "bindings/core/v8/V8DOMConfiguration.h"
 #include "bindings/core/v8/V8EventListenerList.h"
 #include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8ObjectConstructor.h"
 #include "bindings/tests/v8/V8TestInterfaceEmpty.h"
 #include "core/HTMLNames.h"
 #include "core/dom/ContextFeatures.h"
 #include "core/dom/Document.h"
 #include "core/dom/custom/CustomElementCallbackDispatcher.h"
@@ skipping 221 matching lines @@
 static void perWorldBindingsTestInterfaceEmptyMethodMethodCallbackForMainWorld(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceNodeV8Internal::perWorldBindingsTestInterfaceEmptyMethodMethodForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceNode* impl = V8TestInterfaceNode::toNative(info.Holder());
-    bool optionalBooleanArgument;
+    bool optionalBooleanArgument = false;
+    bool optionalBooleanArgumentMissing = false;
     {
         v8::TryCatch block;
         V8RethrowTryCatchScope rethrow(block);
-        if (UNLIKELY(info.Length() <= 0)) {
-            v8SetReturnValueFast(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg()), impl);
-            return;
+        if (!info[0]->IsUndefined()) {
+            TONATIVE_VOID_INTERNAL(optionalBooleanArgument, info[0]->BooleanValue());
+        } else {
+            optionalBooleanArgumentMissing = true;
         }
-        TONATIVE_VOID_INTERNAL(optionalBooleanArgument, info[0]->BooleanValue());
     }
-    v8SetReturnValueFast(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg(optionalBooleanArgument)), impl);
+    v8SetReturnValueFast(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg(Optional<bool>(optionalBooleanArgument, optionalBooleanArgumentMissing))), impl);
 }
 
 static void perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceNodeV8Internal::perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethod(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 static void perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethodForMainWorld(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceNode* impl = V8TestInterfaceNode::toNative(info.Holder());
-    bool optionalBooleanArgument;
+    bool optionalBooleanArgument = false;
+    bool optionalBooleanArgumentMissing = false;
     {
         v8::TryCatch block;
         V8RethrowTryCatchScope rethrow(block);
-        if (UNLIKELY(info.Length() <= 0)) {
-            v8SetReturnValueForMainWorld(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg()));
-            return;
+        if (!info[0]->IsUndefined()) {
+            TONATIVE_VOID_INTERNAL(optionalBooleanArgument, info[0]->BooleanValue());
+        } else {
+            optionalBooleanArgumentMissing = true;
         }
-        TONATIVE_VOID_INTERNAL(optionalBooleanArgument, info[0]->BooleanValue());
     }
-    v8SetReturnValueForMainWorld(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg(optionalBooleanArgument)));
+    v8SetReturnValueForMainWorld(info, WTF::getPtr(impl->perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArg(Optional<bool>(optionalBooleanArgument, optionalBooleanArgumentMissing))));
 }
 
 static void perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethodCallbackForMainWorld(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
     TestInterfaceNodeV8Internal::perWorldBindingsTestInterfaceEmptyMethodOptionalBooleanArgMethodForMainWorld(info);
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
 } // namespace TestInterfaceNodeV8Internal
@@ skipping 89 matching lines @@
 #endif // !ENABLE(OILPAN)
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceNode* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink