Support runtime check of function types.

sdk/lib/_internal/compiler/implementation/compiler.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.
 
 part of dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 108 matching lines @@
 
   void onResolutionComplete() {}
 
   // TODO(ahe,karlklose): rename this?
   void dumpInferredTypes() {}
 
   ItemCompilationContext createItemCompilationContext() {
     return new ItemCompilationContext();
   }
 
-  bool needsRti(ClassElement cls);
+  bool classNeedsRti(ClassElement cls);
+  bool methodNeedsRti(FunctionElement function);
 
   // The following methods are hooks for the backend to register its
   // helper methods.
   void registerInstantiatedClass(ClassElement cls,
                                  Enqueuer enqueuer,
                                  TreeElements elements) {}
   void registerStringInterpolation(TreeElements elements) {}
   void registerCatchStatement(Enqueuer enqueuer,
                               TreeElements elements) {}
   void registerWrapException(TreeElements elements) {}
   void registerThrowExpression(TreeElements elements) {}
   void registerLazyField(TreeElements elements) {}
   void registerTypeVariableExpression(TreeElements elements) {}
   void registerTypeLiteral(TreeElements elements) {}
   void registerStackTraceInCatch(TreeElements elements) {}
   void registerIsCheck(DartType type,
                        Enqueuer enqueuer,
                        TreeElements elements) {}
   void registerAsCheck(DartType type, TreeElements elements) {}
   void registerThrowNoSuchMethod(TreeElements elements) {}
   void registerThrowRuntimeError(TreeElements elements) {}
   void registerAbstractClassInstantiation(TreeElements elements) {}
   void registerFallThroughError(TreeElements elements) {}
   void registerSuperNoSuchMethod(TreeElements elements) {}
   void registerConstantMap(TreeElements elements) {}
-  void registerRuntimeType(TreeElements elements) {}
+  /**
+   * Call this to register that an instantiated generic class has a call
+   * method.
+   */
+  void registerGenericCallMethod(Element callMethod,
+                                 Enqueuer enqueuer,
+                                 TreeElements elements) {}
+  /**
+   * Call this to register that a getter exists for a function on an
+   * instantiated generic class.
+   */
+  void registerGenericClosure(Element closure,
+                              Enqueuer enqueuer,
+                              TreeElements elements) {}
+  /**
+   * Call this to register that the [:runtimeType:] property has been accessed.
+   */
+  void registerRuntimeType(Enqueuer enqueuer, TreeElements elements) {}
 
   void registerRequiredType(DartType type, Element enclosingElement) {}
   void registerClassUsingVariableExpression(ClassElement cls) {}
 
   bool isNullImplementation(ClassElement cls) {
     return cls == compiler.nullClass;
   }
   ClassElement get intImplementation => compiler.intClass;
   ClassElement get doubleImplementation => compiler.doubleClass;
   ClassElement get numImplementation => compiler.numClass;
@@ skipping 1248 matching lines @@
 
   void close() {}
 
   toString() => name;
 
   /// Convenience method for getting an [api.CompilerOutputProvider].
   static NullSink outputProvider(String name, String extension) {
     return new NullSink('$name.$extension');
   }
 }