blob: 38aae2c38a180ed6451f6d6c7faa4bef2788d26d [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#pragma once
namespace syncable {
// For the most part, the sync engine treats version numbers as opaque values.
// However, there are parts of our code base that break this abstraction, and
// depend on the following two invariants:
// 1. CHANGES_VERSION is less than 0.
// 2. The server only issues positive version numbers.
// Breaking these abstractions makes some operations 10 times
// faster. If either of these invariants change, then those queries
// must be revisited.
enum {
} // namespace syncable