Access ConstantSystem through ClosedWorld.

pkg/compiler/lib/src/world.dart

 // 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.
 
 library dart2js.world;
 
 import 'cache_strategy.dart';
 import 'closure.dart' show SynthesizedCallMethodElementX;
 import 'common/backend_api.dart' show BackendClasses;
 import 'common.dart';
+import 'constants/constant_system.dart';
 import 'core_types.dart' show CoreTypes, CoreClasses, CommonElements;
 import 'dart_types.dart';
 import 'elements/elements.dart'
     show
         ClassElement,
         Element,
         FunctionElement,
         MixinApplicationElement,
         TypedefElement,
         FieldElement;
@@ skipping 25 matching lines @@
 
   /// Access to core classes used in the Dart language.
   CoreClasses get coreClasses;
 
   CoreTypes get coreTypes;
 
   CommonElements get commonElements;
 
   CommonMasks get commonMasks;
 
+  ConstantSystem get constantSystem;
+
   /// Returns `true` if [cls] is either directly or indirectly instantiated.
   bool isInstantiated(ClassElement cls);
 
   /// Returns `true` if [cls] is directly instantiated. This means that at
   /// runtime instances of exactly [cls] are assumed to exist.
   bool isDirectlyInstantiated(ClassElement cls);
 
   /// Returns `true` if [cls] is abstractly instantiated. This means that at
   /// runtime instances of [cls] or unknown subclasses of [cls] are assumed to
   /// exist.
@@ skipping 835 matching lines @@
 
   FunctionSet get allFunctions => _allFunctions;
 
   CommonMasks get commonMasks {
     assert(isClosed);
     return _commonMasks;
   }
 
   CoreClasses get coreClasses => commonElements;
 
+  ConstantSystem get constantSystem => _backend.constantSystem;
+
   /// Called to add [cls] to the set of known classes.
   ///
   /// This ensures that class hierarchy queries can be performed on [cls] and
   /// classes that extend or implement it.
   void registerClass(ClassElement cls) => _registerClass(cls);
 
   void registerClosureClass(ClassElement cls) {
     _registerClass(cls, isDirectlyInstantiated: true);
   }
 
@@ skipping 306 matching lines @@
   /// Only the class itself is included.
   EXACT,
 
   /// The class and all subclasses (transitively) are included.
   SUBCLASS,
 
   /// The class and all classes that implement or subclass it (transitively)
   /// are included.
   SUBTYPE,
 }