Compute ResolutionImpact directly from kernel, part 1 of ?

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.dart';
 import '../common/backend_api.dart'
     show Backend, ForeignResolver, NativeRegistry;
 import '../common/registry.dart' show Registry;
 import '../common/resolution.dart' show ResolutionImpact, Target;
 import '../constants/expressions.dart';
 import '../dart_types.dart';
 import '../diagnostics/source_span.dart';
 import '../elements/elements.dart';
 import '../tree/tree.dart';
 import '../universe/call_structure.dart' show CallStructure;
 import '../universe/feature.dart';
 import '../universe/selector.dart' show Selector;
 import '../universe/use.dart' show DynamicUse, StaticUse, TypeUse;
 import '../universe/world_impact.dart' show WorldImpact, WorldImpactBuilder;
 import '../util/enumset.dart' show EnumSet;
 import '../util/util.dart' show Setlet;
 import 'members.dart' show ResolverVisitor;
 import 'send_structure.dart';
 import 'tree_elements.dart' show TreeElementMapping;
 
-class _ResolutionWorldImpact extends ResolutionImpact
+class ResolutionWorldImpactBuilder extends ResolutionImpact
     with WorldImpactBuilder
     implements NativeRegistry {
   final String name;
   EnumSet<Feature> _features;
   Setlet<MapLiteralUse> _mapLiterals;
   Setlet<ListLiteralUse> _listLiterals;
   Setlet<String> _constSymbolNames;
   Setlet<ConstantExpression> _constantLiterals;
   Setlet<dynamic> _nativeData;
 
-  _ResolutionWorldImpact(this.name);
+  ResolutionWorldImpactBuilder(this.name);
 
   void registerMapLiteral(MapLiteralUse mapLiteralUse) {
     assert(mapLiteralUse != null);
     if (_mapLiterals == null) {
       _mapLiterals = new Setlet<MapLiteralUse>();
     }
     _mapLiterals.add(mapLiteralUse);
   }
 
   @override
@@ skipping 101 matching lines @@
   }
 }
 
 /// [ResolutionRegistry] collects all resolution information. It stores node
 /// related information in a [TreeElements] mapping and registers calls with
 /// [Backend], [World] and [Enqueuer].
 // TODO(johnniwinther): Split this into an interface and implementation class.
 class ResolutionRegistry extends Registry {
   final Target target;
   final TreeElementMapping mapping;
-  final _ResolutionWorldImpact worldImpact;
+  final ResolutionWorldImpactBuilder impactBuilder;
 
   ResolutionRegistry(this.target, TreeElementMapping mapping)
       : this.mapping = mapping,
-        this.worldImpact =
-            new _ResolutionWorldImpact(mapping.analyzedElement.toString());
+        this.impactBuilder = new ResolutionWorldImpactBuilder(
+            mapping.analyzedElement.toString());
 
   bool get isForResolution => true;
 
   String toString() => 'ResolutionRegistry for ${mapping.analyzedElement}';
 
   //////////////////////////////////////////////////////////////////////////////
   //  Node-to-Element mapping functionality.
   //////////////////////////////////////////////////////////////////////////////
 
   /// Register [node] as the declaration of [element].
@@ skipping 140 matching lines @@
   void registerPotentialMutationIn(
       Node contextNode, VariableElement element, Node mutationNode) {
     mapping.registerPotentialMutationIn(contextNode, element, mutationNode);
   }
 
   //////////////////////////////////////////////////////////////////////////////
   //  Various Backend/Enqueuer/World registration.
   //////////////////////////////////////////////////////////////////////////////
 
   void registerStaticUse(StaticUse staticUse) {
-    worldImpact.registerStaticUse(staticUse);
+    impactBuilder.registerStaticUse(staticUse);
   }
 
   /// Register the use of a type.
   void registerTypeUse(TypeUse typeUse) {
-    worldImpact.registerTypeUse(typeUse);
+    impactBuilder.registerTypeUse(typeUse);
   }
 
   void registerSuperUse(SourceSpan span) {
     mapping.addSuperUse(span);
   }
 
   void registerTypeLiteral(Send node, DartType type) {
     mapping.setType(node, type);
-    worldImpact.registerTypeUse(new TypeUse.typeLiteral(type));
+    impactBuilder.registerTypeUse(new TypeUse.typeLiteral(type));
   }
 
   void registerLiteralList(Node node, InterfaceType type,
       {bool isConstant, bool isEmpty}) {
     setType(node, type);
-    worldImpact.registerListLiteral(
+    impactBuilder.registerListLiteral(
         new ListLiteralUse(type, isConstant: isConstant, isEmpty: isEmpty));
   }
 
   void registerMapLiteral(Node node, InterfaceType type,
       {bool isConstant, bool isEmpty}) {
     setType(node, type);
-    worldImpact.registerMapLiteral(
+    impactBuilder.registerMapLiteral(
         new MapLiteralUse(type, isConstant: isConstant, isEmpty: isEmpty));
   }
 
   void registerForeignCall(Node node, Element element,
       CallStructure callStructure, ResolverVisitor visitor) {
     var nativeData = target.resolveForeignCall(node, element, callStructure,
         new ForeignResolutionResolver(visitor, this));
     if (nativeData != null) {
       // Split impact from resolution result.
       mapping.registerNativeData(node, nativeData);
-      worldImpact.registerNativeData(nativeData);
+      impactBuilder.registerNativeData(nativeData);
     }
   }
 
   void registerDynamicUse(DynamicUse dynamicUse) {
-    worldImpact.registerDynamicUse(dynamicUse);
+    impactBuilder.registerDynamicUse(dynamicUse);
   }
 
   void registerFeature(Feature feature) {
-    worldImpact.registerFeature(feature);
+    impactBuilder.registerFeature(feature);
   }
 
   void registerConstSymbol(String name) {
-    worldImpact.registerConstSymbolName(name);
+    impactBuilder.registerConstSymbolName(name);
   }
 
   void registerConstantLiteral(ConstantExpression constant) {
-    worldImpact.registerConstantLiteral(constant);
+    impactBuilder.registerConstantLiteral(constant);
   }
 
   ClassElement defaultSuperclass(ClassElement element) {
     return target.defaultSuperclass(element);
   }
 
   void registerInstantiation(InterfaceType type) {
-    worldImpact.registerTypeUse(new TypeUse.instantiation(type));
+    impactBuilder.registerTypeUse(new TypeUse.instantiation(type));
   }
 
   void registerSendStructure(Send node, SendStructure sendStructure) {
     mapping.setSendStructure(node, sendStructure);
   }
 
   void registerNewStructure(NewExpression node, NewStructure newStructure) {
     mapping.setNewStructure(node, newStructure);
   }
 
@@ skipping 22 matching lines @@
   @override
   void registerInstantiatedType(InterfaceType type) {
     registry.registerInstantiation(type);
   }
 
   @override
   DartType resolveTypeFromString(Node node, String typeName) {
     return visitor.resolveTypeFromString(node, typeName);
   }
 }