Field references in field format parameter declarations and initializers mean writing.

pkg/analysis_server/lib/src/services/index/index_contributor.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 services.src.index.index_contributor;
 
 import 'dart:collection' show Queue;
 
 import 'package:analysis_server/src/services/correction/namespace.dart';
 import 'package:analysis_server/src/services/index/index.dart';
@@ skipping 211 matching lines @@
     ConstructorElement element = node.element;
     enterScope(element);
     try {
       return super.visitConstructorDeclaration(node);
     } finally {
       _exitScope();
     }
   }
 
   @override
+  visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+    SimpleIdentifier fieldName = node.fieldName;
+    Expression expression = node.expression;
+    // field reference is write here
+    if (fieldName != null) {
+      Element element = fieldName.staticElement;
+      Location location = _createLocationForNode(fieldName);
+      _store.recordRelationship(element, IndexConstants.IS_WRITTEN_BY, location);
+    }
+    // index expression
+    if (expression != null) {
+      expression.accept(this);
+    }
+  }
+
+  @override
   Object visitConstructorName(ConstructorName node) {
     ConstructorElement element = node.staticElement;
     // in 'class B = A;' actually A constructors are invoked
     if (element != null &&
         element.isSynthetic &&
         element.redirectedConstructor != null) {
       element = element.redirectedConstructor;
     }
     // prepare location
     Location location;
@@ skipping 208 matching lines @@
             location);
       } else if (inSetterContext) {
         _store.recordRelationship(
             nameElement,
             IndexConstants.IS_WRITTEN_BY,
             location);
       }
     }
     // this.field parameter
     if (element is FieldFormalParameterElement) {
-      element = (element as FieldFormalParameterElement).field;
+      Relationship relationship = peekElement() == element ?
+          IndexConstants.IS_WRITTEN_BY :
+          IndexConstants.IS_REFERENCED_BY;
+      _store.recordRelationship(element.field, relationship, location);
+      return null;
     }
     // record specific relations
     if (element is ClassElement ||
         element is FunctionElement ||
         element is FunctionTypeAliasElement ||
         element is LabelElement ||
         element is MethodElement ||
         element is PropertyAccessorElement ||
         element is PropertyInducingElement ||
         element is TypeParameterElement) {
@@ skipping 328 matching lines @@
   }
 
   /**
    * @return `true` if given "node" is part of [PrefixedIdentifier] "prefix.node".
    */
   static bool _isIdentifierInPrefixedIdentifier(SimpleIdentifier node) {
     AstNode parent = node.parent;
     return parent is PrefixedIdentifier && parent.identifier == node;
   }
 }