Add JSNumber, JSInt and JSDouble for the new interceptor scheme.

sdk/lib/_internal/compiler/implementation/js_backend/backend.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 js_backend;
 
 typedef void Recompile(Element element);
 
 class ReturnInfo {
   HType returnType;
@@ skipping 630 matching lines @@
 }
 
 class JavaScriptBackend extends Backend {
   SsaBuilderTask builder;
   SsaOptimizerTask optimizer;
   SsaCodeGeneratorTask generator;
   CodeEmitterTask emitter;
 
   ClassElement jsStringClass;
   ClassElement jsArrayClass;
+  ClassElement jsNumberClass;
+  ClassElement jsIntClass;
+  ClassElement jsDoubleClass;
   ClassElement objectInterceptorClass;
   Element getInterceptorMethod;
+  bool _interceptorsAreInitialized = false;
 
   final Namer namer;
 
   /**
    * Interface used to determine if an object has the JavaScript
    * indexing behavior. The interface is only visible to specific
    * libraries.
    */
   ClassElement jsIndexingBehaviorInterface;
 
@@ skipping 47 matching lines @@
   }
 
   static Namer determineNamer(Compiler compiler) {
     return compiler.enableMinification ?
         new MinifyNamer(compiler) :
         new Namer(compiler);
   }
 
   bool isInterceptorClass(Element element) {
     if (element == null) return false;
-    return element == jsStringClass || element == jsArrayClass;
+    return element == jsStringClass
+        || element == jsArrayClass
+        || element == jsIntClass
+        || element == jsDoubleClass
+        || element == jsNumberClass;
   }
 
   void addInterceptedSelector(Selector selector) {
     usedInterceptors.add(selector);
   }
 
   bool shouldInterceptSelector(Selector selector) {
     List<Element> intercepted = interceptedElements[selector.name];
     if (intercepted == null) return false;
     for (Element element in intercepted) {
       if (selector.applies(element, compiler)) return true;
     }
     return false;
   }
 
   void initializeInterceptorElements() {
     objectInterceptorClass =
         compiler.findInterceptor(const SourceString('ObjectInterceptor'));
     getInterceptorMethod =
         compiler.findInterceptor(const SourceString('getInterceptor'));
+    jsStringClass =
+        compiler.findInterceptor(const SourceString('JSString'));
+    jsArrayClass =
+        compiler.findInterceptor(const SourceString('JSArray'));
+    jsNumberClass =
+        compiler.findInterceptor(const SourceString('JSNumber'));
+    jsIntClass =
+        compiler.findInterceptor(const SourceString('JSInt'));
+    jsDoubleClass =
+        compiler.findInterceptor(const SourceString('JSDouble'));
   }
 
+  void addInterceptors(ClassElement cls) {
+    cls.ensureResolved(compiler);
+    cls.forEachMember((ClassElement classElement, Element member) {
+      // TODO(ngeoffray): Support interceptors on Object methods.
+      if (classElement == compiler.objectClass) return;
+      List<Element> list = interceptedElements.putIfAbsent(
+          member.name, () => new List<Element>());
+      list.add(member);
+    }, includeSuperMembers: true);
+  }
 
   void registerInstantiatedClass(ClassElement cls, Enqueuer enqueuer) {
     ClassElement result = null;
+    if (!_interceptorsAreInitialized) {
+      initializeInterceptorElements();
+      _interceptorsAreInitialized = true;
+    }
     if (cls == compiler.stringClass) {
-      if (jsStringClass == null) {
-        jsStringClass =
-            compiler.findInterceptor(const SourceString('JSString'));
-        initializeInterceptorElements();
-      }
       result = jsStringClass;
     } else if (cls == compiler.listClass) {
-      if (jsArrayClass == null) {
-        jsArrayClass =
-            compiler.findInterceptor(const SourceString('JSArray'));
-        initializeInterceptorElements();
-      }
       result = jsArrayClass;
+    } else if (cls == compiler.intClass) {
+      result = jsIntClass;
+    } else if (cls == compiler.doubleClass) {
+      result = jsDoubleClass;
     }
 
     if (result == null) return;
-
-    result.forEachMember((_, Element member) {
-      List<Element> list = interceptedElements.putIfAbsent(
-          member.name, () => new List<Element>());
-      list.add(member);
-    });
-
+    if (enqueuer.isResolutionQueue) addInterceptors(result);
     enqueuer.registerInstantiatedClass(result);
   }
 
   Element get cyclicThrowHelper {
     return compiler.findHelper(const SourceString("throwCyclicInit"));
   }
 
   JavaScriptItemCompilationContext createItemCompilationContext() {
     return new JavaScriptItemCompilationContext();
   }
@@ skipping 256 matching lines @@
     print("Inferred return types:");
     print("----------------------");
     dumpReturnTypes();
     print("");
     print("Inferred field types:");
     print("------------------------");
     fieldTypes.dump();
     print("");
   }
 }