- Make Boolean 'true' and 'false' singleton VM isolate objects.

vm/dart_api_state.h

 // 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.
 
 #ifndef VM_DART_API_STATE_H_
 #define VM_DART_API_STATE_H_
 
 #include "include/dart_api.h"
 
 #include "platform/thread.h"
@@ skipping 592 matching lines @@
       Object& null_object = Object::Handle();
       null_ = persistent_handles().AllocateHandle();
       null_->set_raw(null_object);
     }
     return null_;
   }
   PersistentHandle* True() {
     if (true_ == NULL) {
       DARTSCOPE(Isolate::Current());
 
-      const Object& true_object = Object::Handle(Bool::True());
       true_ = persistent_handles().AllocateHandle();
-      true_->set_raw(true_object);
+      true_->set_raw(Bool::True());
     }
     return true_;
   }
   PersistentHandle* False() {
     if (false_ == NULL) {
       DARTSCOPE(Isolate::Current());
 
-      const Object& false_object = Object::Handle(Bool::False());
       false_ = persistent_handles().AllocateHandle();
-      false_->set_raw(false_object);
+      false_->set_raw(Bool::False());
     }
     return false_;
   }
 
   void DelayWeakReferenceSet(WeakReferenceSet* reference_set) {
     WeakReferenceSet::Push(reference_set, &delayed_weak_reference_sets_);
   }
 
  private:
   PersistentHandles persistent_handles_;
@@ skipping 50 matching lines @@
           ApiNativeScope::Current()->zone()) {}
   ApiGrowableArray()
       : BaseGrowableArray<T, ValueObject>(
           ApiNativeScope::Current()->zone()) {}
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DART_API_STATE_H_