- Register canonical names for internal VM classes and get rid of the method GetSingletonClassName

vm/snapshot.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
 #include "vm/exceptions.h"
@@ skipping 563 matching lines @@
 
 RawObject* SnapshotReader::ReadVMIsolateObject(intptr_t header_value) {
   intptr_t object_id = GetVMIsolateObjectId(header_value);
   if (object_id == kNullObject) {
     // This is a singleton null object, return it.
     return Object::null();
   }
   if (object_id == kSentinelObject) {
     return Object::sentinel();
   }
+  if (object_id == kEmptyArrayObject) {
+    return Object::empty_array();
+  }
   intptr_t class_id = ClassIdFromObjectId(object_id);
   if (IsSingletonClassId(class_id)) {
     return isolate()->class_table()->At(class_id);  // get singleton class.
   } else {
     ASSERT(Symbols::IsVMSymbolId(object_id));
     return Symbols::GetVMSymbol(object_id);  // return VM symbol.
   }
   UNREACHABLE();
   return Object::null();
 }
@@ skipping 108 matching lines @@
     WriteVMIsolateObject(kNullObject);
     return;
   }
 
   // Check if it is a singleton sentinel object.
   if (rawobj == Object::sentinel()) {
     WriteVMIsolateObject(kSentinelObject);
     return;
   }
 
+  // Check if it is a singleton empty array object.
+  if (rawobj == Object::empty_array()) {
+    WriteVMIsolateObject(kEmptyArrayObject);
+    return;
+  }
+
   // Check if it is a singleton class object which is shared by
   // all isolates.
   intptr_t id = rawobj->GetClassId();
   if (id == kClassCid) {
     RawClass* raw_class = reinterpret_cast<RawClass*>(rawobj);
     intptr_t class_id = raw_class->ptr()->id_;
     if (IsSingletonClassId(class_id)) {
       intptr_t object_id = ObjectIdFromClassId(class_id);
       WriteVMIsolateObject(object_id);
       return;
@@ skipping 384 matching lines @@
     RawObject* raw_obj = *current;
     if (as_references_) {
       writer_->WriteObjectRef(raw_obj);
     } else {
       writer_->WriteObjectImpl(raw_obj);
     }
   }
 }
 
 }  // namespace dart