Fix errors and warnings

pkg/analyzer/lib/src/generated/utilities_collection.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 analyzer.src.generated.utilities_collection;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 32 matching lines @@
    */
   static bool get(int array, int index) {
     _checkIndex(index);
     return (array & (1 << index)) > 0;
   }
 
   /**
    * Return the value of the element at the given index.
    */
   @deprecated
-  static bool getEnum(int array, Enum index) => get(array, index.ordinal);
+  static bool getEnum<E extends Enum<E>>(int array, Enum<E> index) => get(
+      array, index.ordinal);
 
   /**
    * Set the value of the element of the given [array] at the given [index] to
    * the given [value].
    */
   static int set(int array, int index, bool value) {
     _checkIndex(index);
     if (value) {
       return array | (1 << index);
     } else {
       return array & ~(1 << index);
     }
   }
 
   /**
    * Set the value of the element at the given index to the given value.
    */
   @deprecated
-  static int setEnum(int array, Enum index, bool value) =>
+  static int setEnum<E extends Enum<E>>(int array, Enum<E> index, bool value) =>
       set(array, index.ordinal, value);
 
   /**
    * Throw an exception if the index is not within the bounds allowed for an
    * integer-encoded array of boolean values.
    */
   static void _checkIndex(int index) {
     if (index < 0 || index > 30) {
       throw new RangeError("Index not between 0 and 30: $index");
     }
@@ skipping 634 matching lines @@
   /**
    * Map the key to the value.
    *
    * @param key the token being mapped to the value
    * @param value the token to which the key will be mapped
    */
   void put(Token key, Token value) {
     _map[key] = value;
   }
 }