Flatten property_kind into state. Add UNKNOWN as a state for dict-mode receivers

src/accessors.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/compiler.h"
 #include "src/contexts.h"
@@ skipping 163 matching lines @@
     v8::Local<v8::Name> name, v8::Local<v8::Value> val,
     const v8::PropertyCallbackInfo<void>& info) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
   HandleScope scope(isolate);
   Handle<JSObject> object = Utils::OpenHandle(*info.This());
   Handle<Object> value = Utils::OpenHandle(*val);
 
   if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) return;
 
   LookupIterator it(object, Utils::OpenHandle(*name));
-  CHECK(it.HasProperty());
+  CHECK_EQ(LookupIterator::ACCESSOR, it.state());
   DCHECK(it.HolderIsReceiverOrHiddenPrototype());
   Object::SetDataProperty(&it, value);
 }
 
 
 Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo(
     Isolate* isolate, PropertyAttributes attributes) {
   Handle<Name> name(isolate->native_context()->iterator_symbol(), isolate);
   return MakeAccessor(isolate, name, &ArgumentsIteratorGetter,
                       &ArgumentsIteratorSetter, attributes);
@@ skipping 1218 matching lines @@
   info->set_data(Smi::FromInt(index));
   Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport);
   Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport);
   info->set_getter(*getter);
   if (!(attributes & ReadOnly)) info->set_setter(*setter);
   return info;
 }
 
 
 } }  // namespace v8::internal