Remove dart2jslib.dart

pkg/compiler/lib/src/util/util.dart

 // Copyright (c) 2011, 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 dart2js.util;
 
 import 'util_implementation.dart';
 import 'characters.dart';
 
 export 'setlet.dart';
@@ skipping 45 matching lines @@
   static int mapHash(Map map, [int existing = 0]) {
     int h = existing;
     for (var key in map.keys) {
       h = mixHashCodeBits(h, key.hashCode);
       h = mixHashCodeBits(h, map[key].hashCode);
     }
     return h;
   }
 }
 
-/**
- * Tagging interface for classes from which source spans can be generated.
- */
-// TODO(johnniwinther): Find a better name.
-// TODO(ahe): How about "Bolt"?
-abstract class Spannable {}
-
-class _SpannableSentinel implements Spannable {
-  final String name;
-
-  const _SpannableSentinel(this.name);
-
-  String toString() => name;
-}
-
-/// Sentinel spannable used to mark that diagnostics should point to the
-/// current element. Note that the diagnostic reporting will fail if the current
-/// element is `null`.
-const Spannable CURRENT_ELEMENT_SPANNABLE =
-    const _SpannableSentinel("Current element");
-
-/// Sentinel spannable used to mark that there might be no location for the
-/// diagnostic. Use this only when it is not an error not to have a current
-/// element.
-const Spannable NO_LOCATION_SPANNABLE =
-    const _SpannableSentinel("No location");
-
-class SpannableAssertionFailure {
-  final Spannable node;
-  final String message;
-  SpannableAssertionFailure(this.node, this.message);
-
-  String toString() => 'Assertion failure'
-                       '${message != null ? ': $message' : ''}';
-}
-
 bool equalElements(List a, List b) {
   if (a.length != b.length) return false;
   for (int index = 0; index < a.length; index++) {
     if (a[index] != b[index]) {
       return false;
     }
   }
   return true;
 }
 
@@ skipping 141 matching lines @@
   if (usedNames.contains(suggestedName)) {
     int counter = 0;
     while (usedNames.contains(result)) {
       counter++;
       result = "$suggestedName$counter";
     }
   }
   usedNames.add(result);
   return result;
 }