Add VM internal Dart class 'ClassID' used to manage class-ids of known classes. Next CL: add consta…

runtime/lib/typed_data.dart

 // Copyright (c) 2013, 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.
 
 // patch classes for Int8List ..... Float64List and ByteData implementations.
 
 import "dart:_internal";
 import 'dart:math' show Random;
 
 patch class Int8List {
@@ skipping 543 matching lines @@
     if (from is _TypedListBase) {
       if (this.elementSizeInBytes == from.elementSizeInBytes) {
         if ((count < 10) && (from.buffer != this.buffer)) {
           Lists.copy(from, skipCount, this, start, count);
           return;
         } else if (this.buffer._data._setRange(
               start * elementSizeInBytes + this.offsetInBytes,
               count * elementSizeInBytes,
               from.buffer._data,
               skipCount * elementSizeInBytes + from.offsetInBytes,
-              this._cid, from._cid)) {
+              ClassID.getID(this), ClassID.getID(from))) {
           return;
         }
       } else if (from.buffer == this.buffer) {
         // Different element sizes, but same buffer means that we need
         // an intermediate structure.
         // TODO(srdjan): Optimize to skip copying if the range does not overlap.
         final temp_buffer = new List(count);
         for (int i = 0; i < count; i++) {
           temp_buffer[i] = from[skipCount + i];
         }
@@ skipping 26 matching lines @@
 
   // Returns true if operation succeeds.
   // 'fromCid' and 'toCid' may be cid-s of the views and therefore may not
   // match the cids of 'this' and 'from'.
   // Uses toCid and fromCid to decide if clamping is necessary.
   // Element size of toCid and fromCid must match (test at caller).
   bool _setRange(int startInBytes, int lengthInBytes,
                  _TypedListBase from, int startFromInBytes,
                  int toCid, int fromCid)
       native "TypedData_setRange";
-
-  int get _cid native "Object_cid";
 }
 
 
 class _ByteBuffer implements ByteBuffer {
   final _TypedList _data;
 
   _ByteBuffer(this._data);
 
   // Forward calls to _data.
   int get lengthInBytes => _data.lengthInBytes;
@@ skipping 3023 matching lines @@
     return value;
   }
   return object;
 }
 
 
 void _throwRangeError(int index, int length) {
   String message = "$index must be in the range [0..$length)";
   throw new RangeError(message);
 }