Hide VM-only coreimpl List implementation types. These should not be

runtime/lib/string_base.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.
 
 /**
  * [StringBase] contains common methods used by concrete String implementations,
  * e.g., OneByteString.
  */
 class StringBase {
 
   factory StringBase._uninstantiable() {
     throw const UnsupportedOperationException(
         "StringBase can't be instaniated");
   }
 
   int hashCode() native "String_hashCode";
 
   /**
    *  Create the most efficient string representation for specified
    *  [codePoints].
    */
   static String createFromCharCodes(List<int> charCodes) {
-    ObjectArray objectArray;
-    if (charCodes is ObjectArray) {
+    _ObjectArray objectArray;
+    if (charCodes is _ObjectArray) {
       objectArray = charCodes;
     } else {
       int len = charCodes.length;
-      objectArray = new ObjectArray(len);
+      objectArray = new _ObjectArray(len);
       for (int i = 0; i < len; i++) {
         objectArray[i] = charCodes[i];
       }
     }
     return _createFromCodePoints(objectArray);
   }
 
-  static String _createFromCodePoints(ObjectArray<int> codePoints)
+  static String _createFromCodePoints(_ObjectArray<int> codePoints)
       native "StringBase_createFromCodePoints";
 
   String operator [](int index) native "String_charAt";
 
   int charCodeAt(int index) native "String_charCodeAt";
 
   int get length native "String_getLength";
 
   bool isEmpty() {
     return this.length === 0;
@@ skipping 178 matching lines @@
     }
     return buffer.add(this.substring(startIndex)).toString();
   }
 
   /**
    * Convert all objects in [values] to strings and concat them
    * into a result string.
    */
   static String _interpolate(List values) {
     int numValues = values.length;
-    var stringList = new ObjectArray(numValues);
+    var stringList = new _ObjectArray(numValues);
     for (int i = 0; i < numValues; i++) {
       stringList[i] = values[i].toString();
     }
     return _concatAll(stringList);
   }
 
   Iterable<Match> allMatches(String str) {
     List<Match> result = new List<Match>();
     int length = str.length;
     int patternLength = this.length;
@@ skipping 83 matching lines @@
       int j = 1;
       for (int i = 1; i < length; i++) {
         stringsList[j++] = separator;
         stringsList[j++] = strings[i];
       }
     }
     return concatAll(stringsList);
   }
 
   static String concatAll(List<String> strings) {
-    ObjectArray stringsArray;
-    if (strings is ObjectArray) {
+    _ObjectArray stringsArray;
+    if (strings is _ObjectArray) {
       stringsArray = strings;
     } else {
       int len = strings.length;
-      stringsArray = new ObjectArray(len);
+      stringsArray = new _ObjectArray(len);
       for (int i = 0; i < len; i++) {
         stringsArray[i] = strings[i];
       }
     }
     return _concatAll(stringsArray);
   }
 
-  static String _concatAll(ObjectArray<String> strings)
+  static String _concatAll(_ObjectArray<String> strings)
       native "Strings_concatAll";
 }
 
 
 class OneByteString extends StringBase implements String {
   factory OneByteString._uninstantiable() {
     throw const UnsupportedOperationException(
         "OneByteString can only be allocated by the VM");
   }
 
@@ skipping 116 matching lines @@
     for (int g in groups) {
       result.add(group(g));
     }
     return result;
   }
 
   final int _start;
   final String str;
   final String pattern;
 }