Return Object* instead of MaybeObject* from runtime calls.

src/isolate.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 118 matching lines @@
 #define RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, value)  \
   do {                                                      \
     if ((call).is_null()) {                                 \
       ASSERT((isolate)->has_pending_exception());           \
       return (value);                                       \
     }                                                       \
   } while (false)
 
 // TODO(yangguo): Remove after we completely changed to MaybeHandles.
 #define RETURN_IF_EMPTY_HANDLE(isolate, call)  \
-  RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, Failure::Exception())
+  RETURN_IF_EMPTY_HANDLE_VALUE(isolate, call, isolate->heap()->exception())
 
 
 // Macros for MaybeHandle.
 
 #define RETURN_EXCEPTION_IF_SCHEDULED_EXCEPTION(isolate, T)  \
   do {                                                       \
     Isolate* __isolate__ = (isolate);                        \
     if (__isolate__->has_scheduled_exception()) {            \
       __isolate__->PromoteScheduledException();              \
       return MaybeHandle<T>();                               \
     }                                                        \
   } while (false)
 
 #define ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate, dst, call, value)  \
   do {                                                               \
     if (!(call).ToHandle(&dst)) {                                    \
       ASSERT((isolate)->has_pending_exception());                    \
       return value;                                                  \
     }                                                                \
   } while (false)
 
 #define ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, dst, call)  \
-  ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate, dst, call, Failure::Exception())
+  ASSIGN_RETURN_ON_EXCEPTION_VALUE(                             \
+      isolate, dst, call, isolate->heap()->exception())
 
 #define ASSIGN_RETURN_ON_EXCEPTION(isolate, dst, call, T)  \
   ASSIGN_RETURN_ON_EXCEPTION_VALUE(isolate, dst, call, MaybeHandle<T>())
 
 #define RETURN_ON_EXCEPTION_VALUE(isolate, call, value)            \
   do {                                                             \
     if ((call).is_null()) {                                        \
       ASSERT((isolate)->has_pending_exception());                  \
       return value;                                                \
     }                                                              \
   } while (false)
 
 #define RETURN_FAILURE_ON_EXCEPTION(isolate, call)  \
-  RETURN_ON_EXCEPTION_VALUE(isolate, call, Failure::Exception())
+  RETURN_ON_EXCEPTION_VALUE(isolate, call, isolate->heap()->exception())
 
 #define RETURN_ON_EXCEPTION(isolate, call, T)  \
   RETURN_ON_EXCEPTION_VALUE(isolate, call, MaybeHandle<T>())
 
 
 #define FOR_EACH_ISOLATE_ADDRESS_NAME(C)                \
   C(Handler, handler)                                   \
   C(CEntryFP, c_entry_fp)                               \
   C(Context, context)                                   \
   C(PendingException, pending_exception)                \
@@ skipping 574 matching lines @@
                       v8::AccessType type);
   bool MayIndexedAccess(Handle<JSObject> receiver,
                         uint32_t index,
                         v8::AccessType type);
 
   void SetFailedAccessCheckCallback(v8::FailedAccessCheckCallback callback);
   void ReportFailedAccessCheck(Handle<JSObject> receiver, v8::AccessType type);
 
   // Exception throwing support. The caller should use the result
   // of Throw() as its return value.
-  Failure* Throw(Object* exception, MessageLocation* location = NULL);
+  Object* Throw(Object* exception, MessageLocation* location = NULL);
 
   template <typename T>
   MUST_USE_RESULT MaybeHandle<T> Throw(Handle<Object> exception,
                                        MessageLocation* location = NULL) {
     Throw(*exception, location);
     return MaybeHandle<T>();
   }
 
   // Re-throw an exception.  This involves no error reporting since
   // error reporting was handled when the exception was thrown
   // originally.
-  Failure* ReThrow(Object* exception);
+  Object* ReThrow(Object* exception);
   void ScheduleThrow(Object* exception);
   // Re-set pending message, script and positions reported to the TryCatch
   // back to the TLS for re-use when rethrowing.
   void RestorePendingMessageFromTryCatch(v8::TryCatch* handler);
   void ReportPendingMessages();
   // Return pending location if any or unfilled structure.
   MessageLocation GetMessageLocation();
-  Failure* ThrowIllegalOperation();
-  Failure* ThrowInvalidStringLength();
+  Object* ThrowIllegalOperation();
+  Object* ThrowInvalidStringLength();
 
   // Promote a scheduled exception to pending. Asserts has_scheduled_exception.
-  Failure* PromoteScheduledException();
+  Object* PromoteScheduledException();
   void DoThrow(Object* exception, MessageLocation* location);
   // Checks if exception should be reported and finds out if it's
   // caught externally.
   bool ShouldReportException(bool* can_be_caught_externally,
                              bool catchable_by_javascript);
 
   // Attempts to compute the current source location, storing the
   // result in the target out parameter.
   void ComputeLocation(MessageLocation* target);
 
   // Out of resource exception helpers.
-  Failure* StackOverflow();
-  Failure* TerminateExecution();
+  Object* StackOverflow();
+  Object* TerminateExecution();
   void CancelTerminateExecution();
 
   // Administration
   void Iterate(ObjectVisitor* v);
   void Iterate(ObjectVisitor* v, ThreadLocalTop* t);
   char* Iterate(ObjectVisitor* v, char* t);
   void IterateThread(ThreadVisitor* v, char* t);
 
 
   // Returns the current native and global context.
@@ skipping 718 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_