Rename specialTreatmentFor, improve handling of constants as constructor parameters.

pkg/serialization/lib/src/mirrors_helpers.dart

 // 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.
 
 /**
  * Provides some additional convenience methods on top of the basic mirrors
  */
 library mirrors_helpers;
 
 // Import and re-export mirrors here to minimize both dependence on mirrors
@@ skipping 10 matching lines @@
   var mine = mirror.variables.values.filter(
       (x) => !(x.isPrivate || x.isStatic));
   var mySuperclass = mirror.superclass;
   if (mySuperclass != mirror) {
     return append(publicFields(mirror.superclass), mine);
   } else {
     return mine;
   }
 }
 
+/** Return true if the class has a field named [name]. Note that this
+ * includes private fields, but excludes statics. */
+bool hasField(String name, ClassMirror mirror) {
+  var field = mirror.variables[name];
+  if (field != null && !field.isStatic) return true;
+  var superclass = mirror.superclass;
+  if (superclass == mirror) return false;
+  return hasField(name, superclass);
+}
+
 /**
- * Return a list of all the public getters of a class, including inherited
- * getters.
+ * Return a list of all the getters of a class, including inherited
+ * getters. Note that this allows private getters, but excludes statics.
  */
 List<MethodMirror> publicGetters(ClassMirror mirror) {
   var mine = mirror.getters.values.filter((x) => !(x.isPrivate || x.isStatic));
   var mySuperclass = mirror.superclass;
   if (mySuperclass != mirror) {
     return append(publicGetters(mirror.superclass), mine);
   } else {
     return mine;
   }
 }
 
+/** Return true if the class has a getter named [name] */
+bool hasGetter(String name, ClassMirror mirror) {
+  var getter = mirror.getters[name];
+  if (getter != null && !getter.isStatic) return true;
+  var superclass = mirror.superclass;
+  if (superclass == mirror) return false;
+  return hasField(name, superclass);
+}
+
 /**
  * Return a list of all the public getters of a class which have corresponding
  * setters.
  */
 List<MethodMirror> publicGettersWithMatchingSetters(ClassMirror mirror) {
   var setters = mirror.setters;
   return publicGetters(mirror).filter((each) =>
     setters["${each.simpleName}="] != null);
 }
 
 /**
  * A particularly bad case of polyfill, because we cannot yet use type names
  * as literals, so we have to be passed an instance and then extract a
  * ClassMirror from that. Given a horrible name as an extra reminder to fix it.
  */
 ClassMirror turnInstanceIntoSomethingWeCanUse(x) => reflect(x).type;