Summarize constructor initializers.

pkg/analyzer/lib/src/summary/summarize_elements.dart

 // Copyright (c) 2015, 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 serialization.elements;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ skipping 325 matching lines @@
 
   /**
    * Serialize annotations from the given [element].  If [element] has no
    * annotations, the empty list is returned.
    */
   List<UnlinkedConstBuilder> serializeAnnotations(Element element) {
     if (element.metadata.isEmpty) {
       return const <UnlinkedConstBuilder>[];
     }
     return element.metadata.map((ElementAnnotationImpl a) {
-      _ConstExprSerializer serializer = new _ConstExprSerializer(this);
+      _ConstExprSerializer serializer = new _ConstExprSerializer(this, null);
       serializer.serializeAnnotation(a.annotationAst);
       return serializer.toBuilder();
     }).toList();
   }
 
   /**
    * Serialize the given [classElement], creating an [UnlinkedClass].
    */
   UnlinkedClassBuilder serializeClass(ClassElement classElement) {
     UnlinkedClassBuilder b = new UnlinkedClassBuilder();
@@ skipping 91 matching lines @@
       b.shows = combinator.shownNames;
     } else if (combinator is HideElementCombinator) {
       b.hides = combinator.hiddenNames;
     }
     return b;
   }
 
   /**
    * Serialize the given [expression], creating an [UnlinkedConstBuilder].
    */
-  UnlinkedConstBuilder serializeConstExpr(Expression expression) {
-    _ConstExprSerializer serializer = new _ConstExprSerializer(this);
+  UnlinkedConstBuilder serializeConstExpr(Expression expression,
+      [Set<String> constructorParameterNames]) {
+    _ConstExprSerializer serializer =
+        new _ConstExprSerializer(this, constructorParameterNames);
     serializer.serialize(expression);
     return serializer.toBuilder();
   }
 
   /**
    * Serialize documentation from the given [element], creating an
    * [UnlinkedDocumentationComment].
    *
    * If [element] has no documentation, `null` is returned.
    */
@@ skipping 49 matching lines @@
     b.typeParameters =
         executableElement.typeParameters.map(serializeTypeParam).toList();
     b.parameters =
         executableElement.type.parameters.map(serializeParam).toList();
     if (executableElement is PropertyAccessorElement) {
       if (executableElement.isGetter) {
         b.kind = UnlinkedExecutableKind.getter;
       } else {
         b.kind = UnlinkedExecutableKind.setter;
       }
-    } else if (executableElement is ConstructorElement) {
+    } else if (executableElement is ConstructorElementImpl) {
       b.kind = UnlinkedExecutableKind.constructor;
       b.isConst = executableElement.isConst;
       b.isFactory = executableElement.isFactory;
+      if (executableElement.isConst &&
+          executableElement.constantInitializers != null) {
+        Set<String> constructorParameterNames =
+            executableElement.parameters.map((p) => p.name).toSet();
+        b.constantInitializers = executableElement.constantInitializers
+            .map((ConstructorInitializer initializer) =>
+                serializeConstructorInitializer(
+                    initializer,
+                    (expr) =>
+                        serializeConstExpr(expr, constructorParameterNames)))
+            .toList();
+      }
     } else {
       b.kind = UnlinkedExecutableKind.functionOrMethod;
     }
     b.isAbstract = executableElement.isAbstract;
     b.isStatic = executableElement.isStatic &&
         executableElement.enclosingElement is ClassElement;
     b.isExternal = executableElement.isExternal;
     b.documentationComment = serializeDocumentation(executableElement);
     b.annotations = serializeAnnotations(executableElement);
     return b;
@@ skipping 393 matching lines @@
   }
 }
 
 /**
  * Instances of this class keep track of intermediate state during
  * serialization of a single constant [Expression].
  */
 class _ConstExprSerializer extends AbstractConstExprSerializer {
   final _CompilationUnitSerializer serializer;
 
-  _ConstExprSerializer(this.serializer);
+  /**
+   * If a constructor initializer expression is being serialized, the names of
+   * the constructor parameters.  Otherwise `null`.
+   */
+  final Set<String> constructorParameterNames;
+
+  _ConstExprSerializer(this.serializer, this.constructorParameterNames);
 
   @override
   void serializeAnnotation(Annotation annotation) {
     if (annotation.arguments == null) {
       assert(annotation.constructorName == null);
       serialize(annotation.name);
     } else {
       Identifier name = annotation.name;
       Element nameElement = name.staticElement;
       EntityRefBuilder constructor;
@@ skipping 67 matching lines @@
     }
     return new EntityRefBuilder(
         reference: serializer._getElementReferenceId(element));
   }
 
   @override
   EntityRefBuilder serializeType(TypeName typeName) {
     DartType type = typeName != null ? typeName.type : DynamicTypeImpl.instance;
     return serializer.serializeTypeRef(type, null);
   }
+
+  @override
+  bool isConstructorParameterName(String name) {
+    return constructorParameterNames?.contains(name) ?? false;
+  }
 }
 
 /**
  * Instances of this class keep track of intermediate state during
  * serialization of a single library.
  */
 class _LibrarySerializer {
   /**
    * The library to be serialized.
    */
@@ skipping 172 matching lines @@
       exportNames.add(new LinkedExportNameBuilder(
           name: name,
           dependency: serializeDependency(dependentLibrary),
           unit: unit,
           kind: kind));
     }
     pb.exportNames = exportNames;
     return pb;
   }
 }