Reland "Prevent liveedit on or under generators with open activations"

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 5700 matching lines @@
 SMI_ACCESSORS(JSGeneratorObject, continuation, kContinuationOffset)
 ACCESSORS(JSGeneratorObject, operand_stack, FixedArray, kOperandStackOffset)
 SMI_ACCESSORS(JSGeneratorObject, stack_handler_index, kStackHandlerIndexOffset)
 
 bool JSGeneratorObject::is_suspended() {
   ASSERT_LT(kGeneratorExecuting, kGeneratorClosed);
   ASSERT_EQ(kGeneratorClosed, 0);
   return continuation() > 0;
 }
 
+bool JSGeneratorObject::is_closed() {
+  return continuation() == kGeneratorClosed;
+}
+
+bool JSGeneratorObject::is_executing() {
+  return continuation() == kGeneratorExecuting;
+}
+
 JSGeneratorObject* JSGeneratorObject::cast(Object* obj) {
   ASSERT(obj->IsJSGeneratorObject());
   ASSERT(HeapObject::cast(obj)->Size() == JSGeneratorObject::kSize);
   return reinterpret_cast<JSGeneratorObject*>(obj);
 }
 
 
 ACCESSORS(JSModule, context, Object, kContextOffset)
 ACCESSORS(JSModule, scope_info, ScopeInfo, kScopeInfoOffset)
 
@@ skipping 1125 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_