Object::GetElements() and friends maybehandlification.

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 1529 matching lines @@
   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);
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyOrElement(
+      Handle<Object> object,
+      Handle<Name> key);
 
   static Handle<Object> GetProperty(Handle<Object> object,
                                     Handle<Name> key);
   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);
+  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithDefinedGetter(
+      Handle<Object> object,
+      Handle<Object> receiver,
+      Handle<JSReceiver> getter);
 
-  static inline Handle<Object> GetElement(Isolate* isolate,
-                                          Handle<Object> object,
-                                          uint32_t index);
+  MUST_USE_RESULT static inline MaybeHandle<Object> GetElement(
+      Isolate* isolate,
+      Handle<Object> object,
+      uint32_t index);
 
   // For use when we know that no exception can be thrown.
   static inline Handle<Object> GetElementNoExceptionThrown(
       Isolate* isolate,
       Handle<Object> object,
       uint32_t index);
 
-  static Handle<Object> GetElementWithReceiver(Isolate* isolate,
-                                               Handle<Object> object,
-                                               Handle<Object> receiver,
-                                               uint32_t index);
+  MUST_USE_RESULT static MaybeHandle<Object> GetElementWithReceiver(
+      Isolate* isolate,
+      Handle<Object> object,
+      Handle<Object> receiver,
+      uint32_t index);
 
   // Return the object's prototype (might be Heap::null_value()).
   Object* GetPrototype(Isolate* isolate);
   Map* GetMarkerMap(Isolate* isolate);
 
   // Returns the permanent hash code associated with this object. May return
   // undefined if not yet created.
   Object* GetHash();
 
   // Returns the permanent hash code associated with this object depending on
@@ skipping 897 matching lines @@
       Handle<JSObject> object,
       uint32_t index,
       Handle<Object> value,
       PropertyAttributes attributes,
       StrictMode strict_mode,
       bool check_prototype = true,
       SetPropertyMode set_mode = SET_PROPERTY);
 
   // Returns the index'th element.
   // The undefined object if index is out of bounds.
-  static Handle<Object> GetElementWithInterceptor(Handle<JSObject> object,
-                                                  Handle<Object> receiver,
-                                                  uint32_t index);
+  MUST_USE_RESULT static MaybeHandle<Object> GetElementWithInterceptor(
+      Handle<JSObject> object,
+      Handle<Object> receiver,
+      uint32_t index);
 
   enum SetFastElementsCapacitySmiMode {
     kAllowSmiElements,
     kForceSmiElements,
     kDontAllowSmiElements
   };
 
   // Replace the elements' backing store with fast elements of the given
   // capacity.  Update the length for JSArrays.  Returns the new backing
   // store.
@@ skipping 267 matching lines @@
                                    ElementsKind to_kind);
 
   // Used from Object::GetProperty().
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithFailedAccessCheck(
       Handle<JSObject> object,
       Handle<Object> receiver,
       LookupResult* result,
       Handle<Name> name,
       PropertyAttributes* attributes);
 
-  MUST_USE_RESULT static Handle<Object> GetElementWithCallback(
+  MUST_USE_RESULT static MaybeHandle<Object> GetElementWithCallback(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Object> structure,
       uint32_t index,
       Handle<Object> holder);
 
-  MUST_USE_RESULT MaybeObject* GetElementWithCallback(Object* receiver,
-                                                      Object* structure,
-                                                      uint32_t index,
-                                                      Object* holder);
   static PropertyAttributes GetElementAttributeWithInterceptor(
       Handle<JSObject> object,
       Handle<JSReceiver> receiver,
       uint32_t index,
       bool continue_search);
   static PropertyAttributes GetElementAttributeWithoutInterceptor(
       Handle<JSObject> object,
       Handle<JSReceiver> receiver,
       uint32_t index,
       bool continue_search);
@@ skipping 257 matching lines @@
 
   // Shrink length and insert filler objects.
   void Shrink(int length);
 
   // Copy operations.
   MUST_USE_RESULT inline MaybeObject* Copy();
   MUST_USE_RESULT MaybeObject* CopySize(int new_length,
                                         PretenureFlag pretenure = NOT_TENURED);
 
   // Add the elements of a JSArray to this FixedArray.
-  static Handle<FixedArray> AddKeysFromJSArray(Handle<FixedArray> content,
-                                               Handle<JSArray> array);
+  MUST_USE_RESULT static MaybeHandle<FixedArray> AddKeysFromJSArray(
+      Handle<FixedArray> content,
+      Handle<JSArray> array);
 
   // Computes the union of keys and return the result.
   // Used for implementing "for (n in object) { }"
-  static Handle<FixedArray> UnionOfKeys(Handle<FixedArray> first,
-                                        Handle<FixedArray> second);
+  MUST_USE_RESULT static MaybeHandle<FixedArray> UnionOfKeys(
+      Handle<FixedArray> first,
+      Handle<FixedArray> second);
 
   // Copy a sub array from the receiver to dest.
   void CopyTo(int pos, FixedArray* dest, int dest_pos, int len);
 
   // Garbage collection support.
   static int SizeFor(int length) { return kHeaderSize + length * kPointerSize; }
 
   // Code Generation support.
   static int OffsetOfElementAt(int index) { return SizeFor(index); }
 
@@ skipping 7915 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_