Store and serialize NativeBehavior in TreeElements.

pkg/compiler/lib/src/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;
 
 const VERBOSE_OPTIMIZER_HINTS = false;
 
 class JavaScriptItemCompilationContext extends ItemCompilationContext {
   final Set<HInstruction> boundsChecked = new Set<HInstruction>();
@@ skipping 1276 matching lines @@
     // Also register the types of the arguments passed to this method.
     enqueueClass(
         compiler.enqueuer.resolution, coreClasses.stringClass, registry);
   }
 
   void registerNoSuchMethod(FunctionElement noSuchMethod) {
     noSuchMethodRegistry.registerNoSuchMethod(noSuchMethod);
   }
 
   /// Called when resolving a call to a foreign function.
-  void registerForeignCall(Send node, Element element,
+  native.NativeBehavior resolveForeignCall(Send node, Element element,
       CallStructure callStructure, ForeignResolver resolver) {
     native.NativeResolutionEnqueuer nativeEnqueuer =
         compiler.enqueuer.resolution.nativeEnqueuer;
     if (element.name == 'JS') {
-      nativeEnqueuer.registerJsCall(node, resolver);
+      return nativeEnqueuer.resolveJsCall(node, resolver);
     } else if (element.name == 'JS_EMBEDDED_GLOBAL') {
-      nativeEnqueuer.registerJsEmbeddedGlobalCall(node, resolver);
+      return nativeEnqueuer.resolveJsEmbeddedGlobalCall(node, resolver);
     } else if (element.name == 'JS_BUILTIN') {
-      nativeEnqueuer.registerJsBuiltinCall(node, resolver);
+      return nativeEnqueuer.resolveJsBuiltinCall(node, resolver);
     } else if (element.name == 'JS_INTERCEPTOR_CONSTANT') {
       // The type constant that is an argument to JS_INTERCEPTOR_CONSTANT names
       // a class that will be instantiated outside the program by attaching a
       // native class dispatch record referencing the interceptor.
       if (!node.argumentsNode.isEmpty) {
         Node argument = node.argumentsNode.nodes.head;
         ConstantExpression constant = resolver.getConstant(argument);
         if (constant != null && constant.kind == ConstantExpressionKind.TYPE) {
           TypeConstantExpression typeConstant = constant;
           if (typeConstant.type is InterfaceType) {
             resolver.registerInstantiatedType(typeConstant.type);
-            return;
+            // No native behavior for this call.
+            return null;
           }
         }
       }
       reporter.reportErrorMessage(
           node, MessageKind.WRONG_ARGUMENT_FOR_JS_INTERCEPTOR_CONSTANT);
     }
+    // No native behavior for this call.
+    return null;
   }
 
   void enableNoSuchMethod(Enqueuer world) {
     enqueue(world, helpers.createInvocationMirror, compiler.globalDependencies);
     world.registerDynamicUse(new DynamicUse(Selectors.noSuchMethod_, null));
   }
 
   void enableIsolateSupport(Enqueuer enqueuer) {
     // TODO(floitsch): We should also ensure that the class IsolateMessage is
     // instantiated. Currently, just enabling isolate support works.
@@ skipping 1670 matching lines @@
 
   @override
   void onImpactUsed(ImpactUseCase impactUse) {
     if (impactUse == DeferredLoadTask.IMPACT_USE && !supportSerialization) {
       // TODO(johnniwinther): Allow emptying when serialization has been
       // performed.
       resolution.emptyCache();
     }
   }
 }