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pkg/compiler/lib/src/common_elements.dart

 // Copyright (c) 2014, 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.
 
 // TODO(sigmund): rename and move to common/elements.dart
 library dart2js.type_system;
 
 import 'common/names.dart' show Identifiers, Uris;
 import 'constants/values.dart';
 import 'elements/entities.dart';
@@ skipping 1135 matching lines @@
   }
 
   ClassEntity get expectAssumeDynamicClass {
     _ensureExpectAnnotations();
     return _expectAssumeDynamicClass;
   }
 }
 
 /// Interface for accessing libraries, classes and members.
 ///
-/// The _env makes private and injected members directly available and
-/// should therefore not be used to determine scopes.
+/// The element environment makes private and injected members directly
+/// available and should therefore not be used to determine scopes.
+///
+/// The properties exposed are Dart-centric and should therefore, long-term, not
+/// be used during codegen, expect for mirrors.
 // TODO(johnniwinther): Split this into an element environment and a type query
 // interface, the first should only be used during resolution and the latter in
 // both resolution and codegen.
 abstract class ElementEnvironment {
   /// Returns the main library for the compilation.
   LibraryEntity get mainLibrary;
 
   /// Returns the main method for the compilation.
   FunctionEntity get mainFunction;
 
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   /// where all types arguments are `dynamic`.
   InterfaceType getRawType(ClassEntity cls);
 
   /// Returns the 'this type' of [cls]. That is, the instantiation of [cls]
   /// where the type arguments are the type variables of [cls].
   InterfaceType getThisType(ClassEntity cls);
 
   /// Returns `true` if [cls] is generic.
   bool isGenericClass(ClassEntity cls);
 
+  /// Returns `true` if [cls] is an unnamed mixin application.
+  bool isUnnamedMixinApplication(ClassEntity cls);
+
   /// The upper bound on the [typeVariable]. If not explicitly declared, this is
   /// `Object`.
   DartType getTypeVariableBound(TypeVariableEntity typeVariable);
 
   /// Returns the type if [function].
   FunctionType getFunctionType(FunctionEntity function);
 
   /// Returns the type of the [local] function.
   FunctionType getLocalFunctionType(Local local);
 
   /// Returns the unaliased type of [type].
   ///
   /// Use this during resolution to ensure that the alias has been computed.
   // TODO(johnniwinther): Remove this when the resolver is removed.
   DartType getUnaliasedType(DartType type);
 
   /// Returns `true` if [member] a the synthetic getter `loadLibrary` injected
   /// on deferred libraries.
   bool isDeferredLoadLibraryGetter(MemberEntity member);
 
   /// Returns the metadata constants declared on [member].
   Iterable<ConstantValue> getMemberMetadata(MemberEntity member);
 }