Introduce ClassLike, MemberLike, FieldLike and FunctionLike

pkg/compiler/lib/src/js_backend/namer.dart

 // Copyright (c) 2011, 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 js_backend.namer;
 
 import 'dart:collection' show HashMap;
 
 import 'package:js_runtime/shared/embedded_names.dart' show JsGetName;
 
@@ skipping 649 matching lines @@
     return '$name\$${suffix.join(r'$')}';
   }
 
   /// Name for a constructor body.
   jsAst.Name constructorBodyName(FunctionElement ctor) {
     return _disambiguateInternalMember(
         ctor, () => _proposeNameForConstructorBody(ctor));
   }
 
   /// Annotated name for [method] encoding arity and named parameters.
-  jsAst.Name instanceMethodName(FunctionElement method) {
+  jsAst.Name instanceMethodName(MethodElement method) {
     if (method.isGenerativeConstructorBody) {
       return constructorBodyName(method);
     }
     return invocationName(new Selector.fromElement(method));
   }
 
   String _jsNameHelper(Element e) {
     String jsInteropName = backend.nativeData.getJsInteropName(e);
     if (jsInteropName != null && jsInteropName.isNotEmpty) return jsInteropName;
     return e.isLibrary
@@ skipping 562 matching lines @@
     // However, as names from the same libary should have the same library
     // name part, we disambiguate the library name here.
     String disambiguated = name;
     for (int c = 0; libraryLongNames.containsValue(disambiguated); c++) {
       disambiguated = "$name$c";
     }
     libraryLongNames[library] = disambiguated;
     return disambiguated;
   }
 
-  String suffixForGetInterceptor(Iterable<ClassElement> classes) {
+  String suffixForGetInterceptor(Iterable<ClassLike> classes) {
     String abbreviate(ClassElement cls) {
       if (cls == coreClasses.objectClass) return "o";
       if (cls == helpers.jsStringClass) return "s";
       if (cls == helpers.jsArrayClass) return "a";
       if (cls == helpers.jsDoubleClass) return "d";
       if (cls == helpers.jsIntClass) return "i";
       if (cls == helpers.jsNumberClass) return "n";
       if (cls == helpers.jsNullClass) return "u";
       if (cls == helpers.jsBoolClass) return "b";
       if (cls == helpers.jsInterceptorClass) return "I";
       return cls.name;
     }
 
     List<String> names = classes
         .where((cls) => !backend.isNativeOrExtendsNative(cls))
         .map(abbreviate)
         .toList();
     // There is one dispatch mechanism for all native classes.
     if (classes.any((cls) => backend.isNativeOrExtendsNative(cls))) {
       names.add("x");
     }
     // Sort the names of the classes after abbreviating them to ensure
     // the suffix is stable and predictable for the suggested names.
     names.sort();
     return names.join();
   }
 
   /// Property name used for `getInterceptor` or one of its specializations.
-  jsAst.Name nameForGetInterceptor(Iterable<ClassElement> classes) {
+  jsAst.Name nameForGetInterceptor(Iterable<ClassLike> classes) {
     FunctionElement getInterceptor = helpers.getInterceptorMethod;
     if (classes.contains(helpers.jsInterceptorClass)) {
       // If the base Interceptor class is in the set of intercepted classes, we
       // need to go through the generic getInterceptorMethod, since any subclass
       // of the base Interceptor could match.
       // The unspecialized getInterceptor method can also be accessed through
       // its element, so we treat this as a user-space global instead of an
       // internal global.
       return _disambiguateGlobal(getInterceptor);
     }
@@ skipping 807 matching lines @@
   void addSuggestion(String original, String suggestion) {
     assert(!_suggestedNames.containsKey(original));
     _suggestedNames[original] = suggestion;
   }
 
   bool hasSuggestion(String original) => _suggestedNames.containsKey(original);
   bool isSuggestion(String candidate) {
     return _suggestedNames.containsValue(candidate);
   }
 }