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+/**
+ * Copyright (C) 2023-present MongoDB, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the Server Side Public License, version 1,
+ * as published by MongoDB, Inc.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * Server Side Public License for more details.
+ *
+ * You should have received a copy of the Server Side Public License
+ * along with this program. If not, see
+ * <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ * As a special exception, the copyright holders give permission to link the
+ * code of portions of this program with the OpenSSL library under certain
+ * conditions as described in each individual source file and distribute
+ * linked combinations including the program with the OpenSSL library. You
+ * must comply with the Server Side Public License in all respects for
+ * all of the code used other than as permitted herein. If you modify file(s)
+ * with this exception, you may extend this exception to your version of the
+ * file(s), but you are not obligated to do so. If you do not wish to do so,
+ * delete this exception statement from your version. If you delete this
+ * exception statement from all source files in the program, then also delete
+ * it in the license file.
+ */
+
+#pragma once
+
+
+#include <boost/optional.hpp>
+
+#include "mongo/bson/bsonobj.h"
+#include "mongo/db/query/record_id_bound.h"
+
+namespace mongo {
+
+class RecordIdRange {
+public:
+ /**
+ * If the provided value @p newMin is greater than the existing min,
+ * update the lower bound to equal @p newMin
+ *
+ * @return true if range was adjusted
+ */
+ void maybeNarrowMin(const BSONObj& newMin, bool inclusive);
+ void maybeNarrowMin(const RecordIdBound& newMin, bool inclusive);
+
+ /**
+ * If the provided value @p newMax is less than the existing max,
+ * update the upper bound to equal @p newMax
+ *
+ * @return true if range was adjusted
+ */
+ void maybeNarrowMax(const BSONObj& newMax, bool inclusive);
+ void maybeNarrowMax(const RecordIdBound& newMax, bool inclusive);
+
+ /**
+ * Update this range to the intersection of this range
+ * and @p other. This may update both, one of, or neither of
+ * min and max.
+ *
+ * Results in a range which is either unchanged, or made
+ * narrower (possibly becoming an empty range).
+ */
+ void intersectRange(const RecordIdRange& other);
+ /**
+ * Overload of intersectRange taking the components of a RecordIdRange,
+ * for convenience when the other range is not handled as a RecordIdRange.
+ */
+ void intersectRange(const boost::optional<RecordIdBound>& min,
+ const boost::optional<RecordIdBound>& max,
+ bool minInclusive = true,
+ bool maxInclusive = true);
+
+ bool isEmpty() const;
+
+
+ const auto& getMin() const {
+ return _min;
+ }
+
+ const auto& getMax() const {
+ return _max;
+ }
+
+ bool isMinInclusive() const {
+ return _minInclusive;
+ }
+
+ bool isMaxInclusive() const {
+ return _maxInclusive;
+ }
+
+
+private:
+ // If present, this parameter sets the start point of a forward scan or the end point of a
+ // reverse scan.
+ boost::optional<RecordIdBound> _min;
+
+ // If present, this parameter sets the start point of a reverse scan or the end point of a
+ // forward scan.
+ boost::optional<RecordIdBound> _max;
+
+ // TODO: investigate folding this into RecordIdBound; many other usages pair RecordIdBound
+ // with ScanBoundInclusion to convey this information
+ // If min is present, this indicates whether the range is inclusive or exclusive of the
+ // set min value
+ bool _minInclusive = true;
+ // If max is present, this indicates whether the range is inclusive or exclusive of the
+ // set max value
+ bool _maxInclusive = true;
+};
+
+} // namespace mongo