Introduce "CommonElements"

pkg/compiler/lib/src/resolution/class_members.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.resolution.compute_members;
 
 import '../common.dart';
 import '../common/names.dart' show Identifiers, Names;
 import '../common/resolution.dart' show Resolution;
 import '../dart_types.dart';
@@ skipping 292 matching lines @@
     // TODO(johnniwinther): If [cls] is not abstract, check that for all
     // interface members, there is a class member whose type is a subtype of
     // the interface member.
   }
 
   /// Checks that [cls], if it implements Function, has defined call().
   void checkImplementsFunctionWithCall() {
     assert(!cls.isAbstract);
 
     ClassElement functionClass = resolution.coreClasses.functionClass;
+    functionClass.ensureResolved(resolution);
     if (cls.asInstanceOf(functionClass) == null) return;
     if (cls.lookupMember(Identifiers.call) != null) return;
     // TODO(johnniwinther): Make separate methods for backend exceptions.
     // Avoid warnings on backend implementation classes for closures.
     if (resolution.target.isTargetSpecificLibrary(cls.library)) return;
 
     reportMessage(functionClass, MessageKind.UNIMPLEMENTED_METHOD, () {
       reporter.reportWarningMessage(cls, MessageKind.UNIMPLEMENTED_METHOD_ONE, {
         'class': cls.name,
         'name': Identifiers.call,
@@ skipping 358 matching lines @@
         if (!declared.isStatic) {
           interfaceMembers[name] = declared;
         }
       } else if (inheritedMembers.length == 1) {
         interfaceMembers[name] = inheritedMembers.single;
       } else {
         bool someAreGetters = false;
         bool allAreGetters = true;
         Map<DartType, Setlet<Member>> subtypesOfAllInherited =
             new Map<DartType, Setlet<Member>>();
-        outer:
-        for (Member inherited in inheritedMembers) {
+        outer: for (Member inherited in inheritedMembers) {
           if (inherited.isGetter) {
             someAreGetters = true;
             if (!allAreGetters) break outer;
           } else {
             allAreGetters = false;
             if (someAreGetters) break outer;
           }
           for (MemberSignature other in inheritedMembers) {
             if (!resolution.types
                 .isSubtype(inherited.functionType, other.functionType)) {
@@ skipping 251 matching lines @@
         message: "Members have not been fully computed for $this."));
     if (interfaceMembersAreClassMembers) {
       classMembers.forEach((_, member) {
         if (!member.isStatic) f(member);
       });
     } else {
       interfaceMembers.forEach((_, member) => f(member));
     }
   }
 }