chrome/browser/sync_file_system/drive_backend/tracker_id_set.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/sync_file_system/drive_backend/tracker_id_set.h"
   6
   7 #include "base/logging.h"
   8 #include "base/stl_util.h"
   9 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h"
  10
  11 namespace sync_file_system {
  12 namespace drive_backend {
  13
  14 TrackerIDSet::TrackerIDSet() : active_tracker_(0) {}
  15
  16 TrackerIDSet::~TrackerIDSet() {}
  17
  18 void TrackerIDSet::Insert(const FileTracker& tracker) {
  19   if (tracker.active())
  20     InsertActiveTracker(tracker.tracker_id());
  21   else
  22     InsertInactiveTracker(tracker.tracker_id());
  23 }
  24
  25 void TrackerIDSet::InsertActiveTracker(int64 tracker_id) {
  26   DCHECK(tracker_id);
  27   DCHECK(!active_tracker_);
  28
  29   active_tracker_ = tracker_id;
  30   tracker_ids_.insert(tracker_id);
  31 }
  32
  33 void TrackerIDSet::InsertInactiveTracker(int64 tracker_id) {
  34   DCHECK(tracker_id);
  35   DCHECK_NE(active_tracker_, tracker_id);
  36
  37   tracker_ids_.insert(tracker_id);
  38 }
  39
  40 void TrackerIDSet::Erase(int64 tracker_id) {
  41   DCHECK(ContainsKey(tracker_ids_, tracker_id));
  42
  43   if (active_tracker_ == tracker_id)
  44     active_tracker_ = 0;
  45   tracker_ids_.erase(tracker_id);
  46 }
  47
  48 void TrackerIDSet::Activate(int64 tracker_id) {
  49   DCHECK(!active_tracker_);
  50   DCHECK(ContainsKey(tracker_ids_, tracker_id));
  51   active_tracker_ = tracker_id;
  52 }
  53
  54 void TrackerIDSet::Deactivate(int64 tracker_id) {
  55   DCHECK_EQ(active_tracker_, tracker_id);
  56   DCHECK(ContainsKey(tracker_ids_, tracker_id));
  57   active_tracker_ = 0;
  58 }
  59
  60 }  // namespace drive_backend
  61 }  // namespace sync_file_system