Start new design for interceptors and implement String.charCodeAt with it.

sdk/lib/_internal/compiler/implementation/enqueue.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;
 
 class EnqueueTask extends CompilerTask {
   final Enqueuer codegen;
   final Enqueuer resolution;
 
@@ skipping 11 matching lines @@
 }
 
 class Enqueuer {
   final String name;
   final Compiler compiler; // TODO(ahe): Remove this dependency.
   final Function itemCompilationContextCreator;
   final Map<String, Link<Element>> instanceMembersByName;
   final Set<ClassElement> seenClasses;
   final Universe universe;
   final Queue<WorkItem> queue;
+  final Map<SourceString, List<Element>> interceptedElements;

[ahe, 2012/11/12 13:24:11]

Backend specific?

[ngeoffray, 2012/11/13 11:45:16]

Done.

 
   /**
    * Map from declaration elements to the [TreeElements] object holding the
    * resolution mapping for the element implementation.
    *
    * Invariant: Key elements are declaration elements.
    */
   final Map<Element, TreeElements> resolvedElements;
 
   bool queueIsClosed = false;
   EnqueueTask task;
 
   Enqueuer(this.name, this.compiler,
            ItemCompilationContext itemCompilationContextCreator())
     : this.itemCompilationContextCreator = itemCompilationContextCreator,
       instanceMembersByName = new Map<String, Link<Element>>(),
       seenClasses = new Set<ClassElement>(),
       universe = new Universe(),
       queue = new Queue<WorkItem>(),
+      interceptedElements = new Map<SourceString, List<Element>>(),
       resolvedElements = new Map<Element, TreeElements>();
 
   bool get isResolutionQueue => identical(compiler.enqueuer.resolution, this);
 
   TreeElements getCachedElements(Element element) {
     // TODO(ngeoffray): Get rid of this check.
     if (element.enclosingElement.isClosure()) {
       closureMapping.ClosureClassElement cls = element.enclosingElement;
       element = cls.methodElement;
     }
@@ skipping 73 matching lines @@
     if (cls.isInterface()) {
       compiler.internalErrorOnElement(
           // Use the current element, as this is where cls is referenced from.
           compiler.currentElement,
           'Expected a class, but $cls is an interface.');
     }
     universe.instantiatedClasses.add(cls);
     onRegisterInstantiatedClass(cls);
   }
 
+  void registerSpecialInstantiatedClass(ClassElement cls) {
+    registerInstantiatedClass(cls);
+    cls.forEachMember((_, Element member) {
+      List<Element> list = interceptedElements.putIfAbsent(
+          member.name, () => new List<Element>());
+      list.add(member);
+    });
+  }
+
   bool checkNoEnqueuedInvokedInstanceMethods() {
     task.measure(() {
       // Run through the classes and see if we need to compile methods.
       for (ClassElement classElement in universe.instantiatedClasses) {
         for (ClassElement currentClass = classElement;
              currentClass != null;
              currentClass = currentClass.superclass) {
           processInstantiatedClass(currentClass);
         }
       }
@@ skipping 212 matching lines @@
 
   String toString() => 'Enqueuer($name)';
 
   registerUsedSelector(Selector selector) {
     Element interceptor = compiler.backend.getInterceptor(selector);
     if (interceptor != null) {
       registerStaticUse(interceptor);
     }
   }
 }