components/invalidation/public/invalidation_util.h

   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 // Various utilities for dealing with invalidation data types.
   6
   7 #ifndef COMPONENTS_INVALIDATION_PUBLIC_INVALIDATION_UTIL_H_
   8 #define COMPONENTS_INVALIDATION_PUBLIC_INVALIDATION_UTIL_H_
   9
  10 #include <map>
  11 #include <set>
  12 #include <string>
  13
  14 #include "base/memory/scoped_ptr.h"
  15 #include "components/invalidation/public/invalidation_export.h"
  16
  17 namespace base {
  18 class DictionaryValue;
  19 }  // namespace
  20
  21 namespace invalidation {
  22 class Invalidation;
  23 class ObjectId;
  24 }  // namespace invalidation
  25
  26 namespace syncer {
  27
  28 class Invalidation;
  29
  30 struct INVALIDATION_EXPORT ObjectIdLessThan {
  31   bool operator()(const invalidation::ObjectId& lhs,
  32                   const invalidation::ObjectId& rhs) const;
  33 };
  34
  35 struct INVALIDATION_EXPORT InvalidationVersionLessThan {
  36   bool operator()(const syncer::Invalidation& a,
  37                   const syncer::Invalidation& b) const;
  38 };
  39
  40 typedef std::set<invalidation::ObjectId, ObjectIdLessThan> ObjectIdSet;
  41
  42 typedef std::map<invalidation::ObjectId, int, ObjectIdLessThan>
  43     ObjectIdCountMap;
  44
  45 // Caller owns the returned DictionaryValue.
  46 scoped_ptr<base::DictionaryValue> ObjectIdToValue(
  47     const invalidation::ObjectId& object_id);
  48
  49 bool ObjectIdFromValue(const base::DictionaryValue& value,
  50                        invalidation::ObjectId* out);
  51
  52 INVALIDATION_EXPORT std::string ObjectIdToString(
  53     const invalidation::ObjectId& object_id);
  54
  55 }  // namespace syncer
  56
  57 #endif  // COMPONENTS_INVALIDATION_PUBLIC_INVALIDATION_UTIL_H_