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Unified Diff: sync/notifier/single_object_invalidation_set.h

Issue 23441042: Refactor common invalidation framework types (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Move DEPS rule Created 7 years, 2 months ago
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Index: sync/notifier/single_object_invalidation_set.h
diff --git a/sync/notifier/single_object_invalidation_set.h b/sync/notifier/single_object_invalidation_set.h
new file mode 100644
index 0000000000000000000000000000000000000000..c4dd051b65972083e75b589943856a4e00fbea35
--- /dev/null
+++ b/sync/notifier/single_object_invalidation_set.h
@@ -0,0 +1,66 @@
+// Copyright 2013 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.
+
+#ifndef SYNC_NOTIFIER_SINGLE_OBJECT_INVALIDATION_SET_H_
+#define SYNC_NOTIFIER_SINGLE_OBJECT_INVALIDATION_SET_H_
+
+#include <set>
+
+#include "base/memory/scoped_ptr.h"
+#include "sync/base/sync_export.h"
+#include "sync/internal_api/public/base/invalidation.h"
+
+namespace base {
+class ListValue;
+} // namespace base
+
+namespace syncer {
+
+struct InvalidationVersionLessThan {
+ bool operator()(const Invalidation& a, const Invalidation& b);
+};
+
+// Holds a list of invalidations that all share the same Object ID.
+//
+// The list is kept sorted by version to make it easier to perform common
+// operations, like checking for an unknown version invalidation or fetching the
+// highest invalidation with the highest version number.
+class SYNC_EXPORT SingleObjectInvalidationSet {
+ public:
+ typedef std::set<Invalidation, InvalidationVersionLessThan> InvalidationsSet;
+ typedef InvalidationsSet::const_iterator const_iterator;
+ typedef InvalidationsSet::const_reverse_iterator const_reverse_iterator;
+
+ SingleObjectInvalidationSet();
+ ~SingleObjectInvalidationSet();
+
+ void Insert(const Invalidation& invalidation);
+ void InsertAll(const SingleObjectInvalidationSet& other);
+ void Clear();
+
+ // Returns true if this list contains an unknown version.
+ //
+ // Unknown version invalidations always end up at the start of the list,
+ // because they have the lowest possible value in the sort ordering.
+ bool StartsWithUnknownVersion() const;
+ size_t GetSize() const;
+ bool IsEmpty() const;
+ bool operator==(const SingleObjectInvalidationSet& other) const;
+
+ const_iterator begin() const;
+ const_iterator end() const;
+ const_reverse_iterator rbegin() const;
+ const_reverse_iterator rend() const;
+ const Invalidation& back() const;
+
+ scoped_ptr<base::ListValue> ToValue() const;
+ bool ResetFromValue(const base::ListValue& list);
+
+ private:
+ InvalidationsSet invalidations_;
+};
+
+} // syncer
+
+#endif // SYNC_NOTIFIER_SINGLE_OBJECT_INVALIDATION_SET_H_
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