Return MaybeHandle from GetProperty.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1518 matching lines @@
 
   void Lookup(Name* name, LookupResult* result);
 
   // Property access.
   MUST_USE_RESULT inline MaybeObject* GetProperty(Name* key);
   MUST_USE_RESULT inline MaybeObject* GetProperty(
       Name* key,
       PropertyAttributes* attributes);
 
   // TODO(yangguo): this should eventually replace the non-handlified version.
-  static Handle<Object> GetPropertyWithReceiver(Handle<Object> object,
-                                                Handle<Object> receiver,
-                                                Handle<Name> name,
-                                                PropertyAttributes* attributes);
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithReceiver(
+      Handle<Object> object,
+      Handle<Object> receiver,
+      Handle<Name> name,
+      PropertyAttributes* attributes);
   MUST_USE_RESULT MaybeObject* GetPropertyWithReceiver(
       Object* receiver,
       Name* key,
       PropertyAttributes* attributes);
 
   static Handle<Object> GetPropertyOrElement(Handle<Object> object,
                                              Handle<Name> key);
 
   static Handle<Object> GetProperty(Handle<Object> object,
                                     Handle<Name> key);
-  static Handle<Object> GetProperty(Handle<Object> object,
-                                    Handle<Object> receiver,
-                                    LookupResult* result,
-                                    Handle<Name> key,
-                                    PropertyAttributes* attributes);
+  MUST_USE_RESULT static MaybeHandle<Object> GetProperty(
+      Handle<Object> object,
+      Handle<Object> receiver,
+      LookupResult* result,
+      Handle<Name> key,
+      PropertyAttributes* attributes);
 
   MUST_USE_RESULT MaybeObject* GetProperty(Object* receiver,
                                            LookupResult* result,
                                            Name* key,
                                            PropertyAttributes* attributes);
 
   MUST_USE_RESULT MaybeObject* GetPropertyWithDefinedGetter(Object* receiver,
                                                             JSReceiver* getter);
 
   static inline Handle<Object> GetElement(Isolate* isolate,
@@ skipping 672 matching lines @@
   // Undefined values are placed after non-undefined values.
   // Returns the number of non-undefined values.
   static Handle<Object> PrepareElementsForSort(Handle<JSObject> object,
                                                uint32_t limit);
   // As PrepareElementsForSort, but only on objects where elements is
   // a dictionary, and it will stay a dictionary.
   static Handle<Object> PrepareSlowElementsForSort(Handle<JSObject> object,
                                                    uint32_t limit);
   MUST_USE_RESULT MaybeObject* PrepareSlowElementsForSort(uint32_t limit);
 
-  static Handle<Object> GetPropertyWithCallback(Handle<JSObject> object,
-                                                Handle<Object> receiver,
-                                                Handle<Object> structure,
-                                                Handle<Name> name);
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithCallback(
+      Handle<JSObject> object,
+      Handle<Object> receiver,
+      Handle<Object> structure,
+      Handle<Name> name);
 
   static Handle<Object> SetPropertyWithCallback(
       Handle<JSObject> object,
       Handle<Object> structure,
       Handle<Name> name,
       Handle<Object> value,
       Handle<JSObject> holder,
       StrictMode strict_mode);
 
   static Handle<Object> SetPropertyWithInterceptor(
@@ skipping 99 matching lines @@
                              Handle<Name> name,
                              Handle<Object> getter,
                              Handle<Object> setter,
                              PropertyAttributes attributes,
                              v8::AccessControl access_control = v8::DEFAULT);
 
   // Defines an AccessorInfo property on the given object.
   static Handle<Object> SetAccessor(Handle<JSObject> object,
                                     Handle<AccessorInfo> info);
 
-  static Handle<Object> GetPropertyWithInterceptor(
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithInterceptor(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Name> name,
       PropertyAttributes* attributes);
-  static Handle<Object> GetPropertyPostInterceptor(
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyPostInterceptor(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Name> name,
       PropertyAttributes* attributes);
   MUST_USE_RESULT MaybeObject* GetLocalPropertyPostInterceptor(
       Object* receiver,
       Name* name,
       PropertyAttributes* attributes);
 
   // Returns true if this is an instance of an api function and has
@@ skipping 377 matching lines @@
 
  private:
   friend class DictionaryElementsAccessor;
   friend class JSReceiver;
   friend class Object;
 
   static void UpdateAllocationSite(Handle<JSObject> object,
                                    ElementsKind to_kind);
 
   // Used from Object::GetProperty().
-  static Handle<Object> GetPropertyWithFailedAccessCheck(
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithFailedAccessCheck(
       Handle<JSObject> object,
       Handle<Object> receiver,
       LookupResult* result,
       Handle<Name> name,
       PropertyAttributes* attributes);
 
   MUST_USE_RESULT MaybeObject* GetElementWithCallback(Object* receiver,
                                                       Object* structure,
                                                       uint32_t index,
                                                       Object* holder);
@@ skipping 8032 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_