Support runtime check of function types.

sdk/lib/_internal/compiler/implementation/universe/universe.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 universe;
 
 import '../closure.dart';
 import '../elements/elements.dart';
 import '../dart2jslib.dart';
 import '../dart_types.dart';
@@ skipping 32 matching lines @@
    * getter and only registers an invoked getter.
    */
   final Set<Element> fieldGetters;
 
   /**
    * Fields set. See comment in [fieldGetters].
    */
   final Set<Element> fieldSetters;
   final Set<DartType> isChecks;
 
+  /**
+   * Set of [:call:] methods in instantiated classes that use type variables
+   * in their signature.
+   */
+  final Set<Element> genericCallMethods;
+
+  /**
+   * Set of methods in instantiated classes that use type variables in their
+   * signature and have potentially been closurized.
+   */
+  final Set<Element> closurizedGenericMembers;
+
   bool usingFactoryWithTypeArguments = false;
 
   Universe() : instantiatedClasses = new Set<ClassElement>(),
                instantiatedTypes = new Set<DartType>(),
                staticFunctionsNeedingGetter = new Set<FunctionElement>(),
                invokedNames = new Map<SourceString, Set<Selector>>(),
                invokedGetters = new Map<SourceString, Set<Selector>>(),
                invokedSetters = new Map<SourceString, Set<Selector>>(),
                fieldGetters = new Set<Element>(),
                fieldSetters = new Set<Element>(),
-               isChecks = new Set<DartType>();
+               isChecks = new Set<DartType>(),
+               genericCallMethods = new Set<Element>(),
+               closurizedGenericMembers = new Set<Element>();
 
   bool hasMatchingSelector(Set<Selector> selectors,
                            Element member,
                            Compiler compiler) {
     if (selectors == null) return false;
     for (Selector selector in selectors) {
       if (selector.appliesUnnamed(member, compiler)) return true;
     }
     return false;
   }
@@ skipping 373 matching lines @@
     //   bar() => foo(); // The call to 'foo' is a typed selector.
     // }
     if (element.getEnclosingClass().isClosure()) {
       return appliesUntyped(element, compiler);
     }
 
     if (!mask.canHit(element, this, compiler)) return false;
     return appliesUntyped(element, compiler);
   }
 }