Support deserialization of ResolutionImpact for members of unnamed mixin applications

tests/compiler/dart2js/serialization_helper.dart

 // Copyright (c) 2016, 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.serialization_helper;
 
 import 'dart:io';
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
@@ skipping 10 matching lines @@
 import 'package:compiler/src/scanner/scanner.dart';
 import 'package:compiler/src/serialization/element_serialization.dart';
 import 'package:compiler/src/serialization/impact_serialization.dart';
 import 'package:compiler/src/serialization/json_serializer.dart';
 import 'package:compiler/src/serialization/resolved_ast_serialization.dart';
 import 'package:compiler/src/serialization/serialization.dart';
 import 'package:compiler/src/serialization/modelz.dart';
 import 'package:compiler/src/serialization/task.dart';
 import 'package:compiler/src/tokens/token.dart';
 import 'package:compiler/src/script.dart';
+import 'package:compiler/src/universe/call_structure.dart';
+import 'package:compiler/src/universe/use.dart';
 import 'package:compiler/src/universe/world_impact.dart';
 import 'memory_compiler.dart';
 
 class Arguments {
   final String filename;
   final bool loadSerializedData;
   final bool saveSerializedData;
   final String serializedDataFileName;
   final bool verbose;
 
@@ skipping 98 matching lines @@
 class ResolutionImpactSerializer extends SerializerPlugin {
   final Resolution resolution;
 
   ResolutionImpactSerializer(this.resolution);
 
   @override
   void onElement(Element element, ObjectEncoder createEncoder(String tag)) {
     if (resolution.hasBeenResolved(element)) {
       ResolutionImpact impact = resolution.getResolutionImpact(element);
       ObjectEncoder encoder = createEncoder(WORLD_IMPACT_TAG);
-      new ImpactSerializer(encoder).serialize(impact);
+      new ImpactSerializer(element, encoder).serialize(impact);
     }
   }
 }
 
 class ResolutionImpactDeserializer extends DeserializerPlugin {
   Map<Element, ResolutionImpact> impactMap = <Element, ResolutionImpact>{};
 
   @override
   void onElement(Element element, ObjectDecoder getDecoder(String tag)) {
     ObjectDecoder decoder = getDecoder(WORLD_IMPACT_TAG);
     if (decoder != null) {
-      impactMap[element] = ImpactDeserializer.deserializeImpact(decoder);
+      impactMap[element] =
+          ImpactDeserializer.deserializeImpact(element, decoder);
     }
   }
 }
 
 class _DeserializerSystem extends DeserializerSystem {
   final Compiler _compiler;
   final Deserializer _deserializer;
   final List<LibraryElement> deserializedLibraries = <LibraryElement>[];
   final ResolutionImpactDeserializer _resolutionImpactDeserializer =
       new ResolutionImpactDeserializer();
@@ skipping 46 matching lines @@
 
   @override
   ResolvedAst getResolvedAst(Element element) {
     if (_resolvedAstDeserializer != null) {
       return _resolvedAstDeserializer.getResolvedAst(element);
     }
     return null;
   }
 
   @override
+  bool hasResolutionImpact(Element element) {
+    if (element.isConstructor &&
+            element.enclosingClass.isUnnamedMixinApplication) {
+      return true;
+    }
+    return _resolutionImpactDeserializer.impactMap.containsKey(element);
+  }
+
+  @override
   ResolutionImpact getResolutionImpact(Element element) {
+    if (element.isConstructor &&
+        element.enclosingClass.isUnnamedMixinApplication) {
+      ClassElement superclass =  element.enclosingClass.superclass;
+      ConstructorElement superclassConstructor =
+          superclass.lookupConstructor(element.name);
+      assert(invariant(element, superclassConstructor != null,
+          message: "Superclass constructor '${element.name}' called from "
+                   "${element} not found in ${superclass}."));
+      // TODO(johnniwinther): Compute callStructure. Currently not used.
+      CallStructure callStructure;
+      return _resolutionImpactDeserializer.impactMap.putIfAbsent(element, () {
+        return new DeserializedResolutionImpact(
+            staticUses: <StaticUse>[new StaticUse.superConstructorInvoke(
+                superclassConstructor, callStructure)]);
+      });
+    }
     return _resolutionImpactDeserializer.impactMap[element];
   }
 
   @override
   WorldImpact computeWorldImpact(Element element) {
     ResolutionImpact resolutionImpact = getResolutionImpact(element);
     assert(invariant(element, resolutionImpact != null,
         message: 'No impact found for $element (${element.library})'));
     return _impactTransformer.transformResolutionImpact(resolutionImpact);
   }
@@ skipping 68 matching lines @@
 
   @override
   void onElement(Element element, ObjectDecoder getDecoder(String tag)) {
     ObjectDecoder decoder = getDecoder(RESOLVED_AST_TAG);
     if (decoder != null) {
       _decoderMap[element] = decoder;
     }
   }
 }