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Diffstat (limited to 'qpid/cpp/src/qpid/framing/IsInSequenceSet.h')
-rw-r--r-- | qpid/cpp/src/qpid/framing/IsInSequenceSet.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/framing/IsInSequenceSet.h b/qpid/cpp/src/qpid/framing/IsInSequenceSet.h new file mode 100644 index 0000000000..fe10c1b9fa --- /dev/null +++ b/qpid/cpp/src/qpid/framing/IsInSequenceSet.h @@ -0,0 +1,51 @@ +#ifndef QPID_FRAMING_ISINSEQUENCESET_H +#define QPID_FRAMING_ISINSEQUENCESET_H + +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ + +#include "qpid/framing/SequenceSet.h" + +namespace qpid { +namespace framing { +/** + * Functor to test whether values are in a sequence set. This is a + * stateful functor that requires the values to be supplied in order + * and takes advantage of that ordering to avoid multiple scans. + */ +class IsInSequenceSet +{ + public: + IsInSequenceSet(const SequenceSet& s) : set(s), i(set.rangesBegin()) {} + + bool operator()(const SequenceNumber& n) { + while (i != set.rangesEnd() && i->end() <= n) ++i; + return i != set.rangesEnd() && i->begin() <= n; + } + + private: + const SequenceSet& set; + SequenceSet::RangeIterator i; +}; + +}} // namespace qpid::framing + +#endif /*!QPID_FRAMING_ISINSEQUENCESET_H*/ |