Issue 4383. Calling field without setter should generate problem

compiler/java/com/google/dart/compiler/resolver/Elements.java

 // Copyright (c) 2012, 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.
 
 package com.google.dart.compiler.resolver;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Objects;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
@@ skipping 729 matching lines @@
   public static boolean isArtificialAssertMethod(Element element) {
     if (element instanceof MethodElement) {
       MethodElement methodElement = (MethodElement) element;
       return Objects.equal(methodElement.getName(), "assert")
           && methodElement.getEnclosingElement() instanceof LibraryElement
           && methodElement.getEnclosingElement().getName().equals("dart://core/core_runtime.dart");
     }
     return false;
   }
 
+  /**
+   * @return <code>true</code> if normal field or abstract field with getter.
+   */
+  public static boolean isFieldWithGetter(FieldElement fieldElement) {
+    if (fieldElement.getModifiers().isAbstractField()) {
+      return fieldElement.getGetter() != null;
+    }
+    return true;
+  }
+  
+  public static boolean isAbstractFieldWithoutGetter(Element element) {
+    if (element instanceof FieldElement) {
+      FieldElement fieldElement = (FieldElement) element;
+      return fieldElement.getModifiers().isAbstractField() && fieldElement.getGetter() == null;
+    }
+    return false;
+  }
+  
 }