Summarize constructor initializers.

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

Index: pkg/analyzer/lib/src/summary/summarize_elements.dart
diff --git a/pkg/analyzer/lib/src/summary/summarize_elements.dart b/pkg/analyzer/lib/src/summary/summarize_elements.dart
index 92ea9a44179c19662ff5e392f8bd7ce2fe52b55f..2cdd111e3cd5c42f6c38da91458f9e5e64296484 100644
--- a/pkg/analyzer/lib/src/summary/summarize_elements.dart
+++ b/pkg/analyzer/lib/src/summary/summarize_elements.dart
@@ -436,8 +436,10 @@ class _CompilationUnitSerializer {
   /**
    * 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();
   }
@@ -506,10 +508,22 @@ class _CompilationUnitSerializer {
       } 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;
     }
@@ -916,7 +930,13 @@ class _CompilationUnitSerializer {
 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
   EntityRefBuilder serializeConstructorName(ConstructorName constructor) {
@@ -931,8 +951,7 @@ class _ConstExprSerializer extends AbstractConstExprSerializer {
           name: constructor.name.name, prefixReference: typeId));
       int refId = serializer.linkedReferences.length;
       serializer.linkedReferences.add(new LinkedReferenceBuilder(
-          kind: ReferenceKind.constructor,
-          unit: typeLinkedRef.unit));
+          kind: ReferenceKind.constructor, unit: typeLinkedRef.unit));
       return new EntityRefBuilder(
           reference: refId, typeArguments: typeRef.typeArguments);
     }
@@ -979,6 +998,11 @@ class _ConstExprSerializer extends AbstractConstExprSerializer {
     DartType type = typeName != null ? typeName.type : DynamicTypeImpl.instance;
     return serializer.serializeTypeRef(type, null);
   }
+
+  @override
+  bool isConstructorParameterName(String name) {
+    return constructorParameterNames?.contains(name) ?? false;
+  }
 }
 
 /**