Polish Maybe API a bit, removing useless creativity and fixing some signatures.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 6943 matching lines @@
 }
 
 
 Maybe<bool> JSReceiver::HasProperty(Handle<JSReceiver> object,
                                     Handle<Name> name) {
   if (object->IsJSProxy()) {
     Handle<JSProxy> proxy = Handle<JSProxy>::cast(object);
     return JSProxy::HasPropertyWithHandler(proxy, name);
   }
   Maybe<PropertyAttributes> result = GetPropertyAttributes(object, name);
-  if (!result.has_value) return Maybe<bool>();
-  return maybe(result.value != ABSENT);
+  return result.has_value ? Just(result.value != ABSENT) : Nothing<bool>();
 }
 
 
 Maybe<bool> JSReceiver::HasOwnProperty(Handle<JSReceiver> object,
                                        Handle<Name> name) {
   if (object->IsJSProxy()) {
     Handle<JSProxy> proxy = Handle<JSProxy>::cast(object);
     return JSProxy::HasPropertyWithHandler(proxy, name);
   }
   Maybe<PropertyAttributes> result = GetOwnPropertyAttributes(object, name);
-  if (!result.has_value) return Maybe<bool>();
-  return maybe(result.value != ABSENT);
+  return result.has_value ? Just(result.value != ABSENT) : Nothing<bool>();
 }
 
 
 Maybe<PropertyAttributes> JSReceiver::GetPropertyAttributes(
     Handle<JSReceiver> object, Handle<Name> key) {
   uint32_t index;
   if (object->IsJSObject() && key->AsArrayIndex(&index)) {
     return GetElementAttribute(object, index);
   }
   LookupIterator it(object, key);
@@ skipping 38 matching lines @@
 }
 
 
 Maybe<bool> JSReceiver::HasElement(Handle<JSReceiver> object, uint32_t index) {
   if (object->IsJSProxy()) {
     Handle<JSProxy> proxy = Handle<JSProxy>::cast(object);
     return JSProxy::HasElementWithHandler(proxy, index);
   }
   Maybe<PropertyAttributes> result = JSObject::GetElementAttributeWithReceiver(
       Handle<JSObject>::cast(object), object, index, true);
-  if (!result.has_value) return Maybe<bool>();
-  return maybe(result.value != ABSENT);
+  return result.has_value ? Just(result.value != ABSENT) : Nothing<bool>();
 }
 
 
 Maybe<bool> JSReceiver::HasOwnElement(Handle<JSReceiver> object,
                                       uint32_t index) {
   if (object->IsJSProxy()) {
     Handle<JSProxy> proxy = Handle<JSProxy>::cast(object);
     return JSProxy::HasElementWithHandler(proxy, index);
   }
   Maybe<PropertyAttributes> result = JSObject::GetElementAttributeWithReceiver(
       Handle<JSObject>::cast(object), object, index, false);
-  if (!result.has_value) return Maybe<bool>();
-  return maybe(result.value != ABSENT);
+  return result.has_value ? Just(result.value != ABSENT) : Nothing<bool>();
 }
 
 
 Maybe<PropertyAttributes> JSReceiver::GetOwnElementAttribute(
     Handle<JSReceiver> object, uint32_t index) {
   if (object->IsJSProxy()) {
     return JSProxy::GetElementAttributeWithHandler(
         Handle<JSProxy>::cast(object), object, index);
   }
   return JSObject::GetElementAttributeWithReceiver(
@@ skipping 573 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_