Refactor resolution of foreign calls.

pkg/compiler/lib/src/resolution/registry.dart

 // Copyright (c) 2014, 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.registry;
 
 import '../common/backend_api.dart' show
-    Backend;
+    Backend,
+    ForeignResolver;
 import '../common/registry.dart' show
     Registry;
 import '../compiler.dart' show
     Compiler;
 import '../constants/expressions.dart';
 import '../dart_types.dart';
 import '../diagnostics/invariant.dart' show
     invariant;
 import '../enqueue.dart' show
     ResolutionEnqueuer,
     WorldImpact;
 import '../elements/elements.dart';
 import '../tree/tree.dart';
 import '../util/util.dart' show
     Setlet;
+import '../universe/call_structure.dart' show
+    CallStructure;
 import '../universe/selector.dart' show
     Selector;
 import '../universe/universe.dart' show
     UniverseSelector;
 import '../world.dart' show World;
 
 import 'send_structure.dart';
 
 import 'members.dart' show
     ResolverVisitor;
@@ skipping 439 matching lines @@
     mapping.setType(node, type);
     backend.resolutionCallbacks.onTypeLiteral(type, this);
     backend.registerInstantiatedType(compiler.coreTypes.typeType, world, this);
   }
 
   void registerMapLiteral(Node node, DartType type, bool isConstant) {
     setType(node, type);
     backend.resolutionCallbacks.onMapLiteral(this, type, isConstant);
   }
 
-  // TODO(johnniwinther): Remove the [ResolverVisitor] dependency. Its only
-  // needed to lookup types in the current scope.
-  void registerJsCall(Node node, ResolverVisitor visitor) {
-    world.registerJsCall(node, visitor);
-  }
-
-  // TODO(johnniwinther): Remove the [ResolverVisitor] dependency. Its only
-  // needed to lookup types in the current scope.
-  void registerJsEmbeddedGlobalCall(Node node, ResolverVisitor visitor) {
-    world.registerJsEmbeddedGlobalCall(node, visitor);
-  }
-
-  // TODO(johnniwinther): Remove the [ResolverVisitor] dependency. Its only
-  // needed to lookup types in the current scope.
-  void registerJsBuiltinCall(Node node, ResolverVisitor visitor) {
-    world.registerJsBuiltinCall(node, visitor);
+  void registerForeignCall(Node node,
+                           Element element,
+                           CallStructure callStructure,
+                           ResolverVisitor visitor) {
+    backend.registerForeignCall(
+        node, element, callStructure,
+        new ForeignResolutionResolver(visitor, this));
   }
 
   void registerGetOfStaticFunction(FunctionElement element) {
     worldImpact.registerClosurizedFunction(element);
   }
 
   void registerDynamicGetter(UniverseSelector selector) {
     assert(selector.selector.isGetter);
     worldImpact.registerDynamicGetter(selector);
   }
@@ skipping 103 matching lines @@
   }
 
   void registerIncDecOperation() {
     backend.resolutionCallbacks.onIncDecOperation(this);
   }
 
   void registerTryStatement() {
     mapping.containsTryStatement = true;
   }
 }
+
+class ForeignResolutionResolver implements ForeignResolver {
+  final ResolverVisitor visitor;
+  final ResolutionRegistry registry;
+
+  ForeignResolutionResolver(this.visitor, this.registry);
+
+  @override
+  ConstantExpression getConstant(Node node) {
+    return registry.getConstant(node);
+  }
+
+  @override
+  void registerInstantiatedType(InterfaceType type) {
+    registry.registerInstantiatedType(type);
+  }
+
+  @override
+  DartType resolveTypeFromString(Node node, String typeName) {
+    return visitor.resolveTypeFromString(node, typeName);
+  }
+}