summaryrefslogtreecommitdiff
path: root/qpid/cpp/src/qpid/framing/IsInSequenceSet.h
diff options
context:
space:
mode:
Diffstat (limited to 'qpid/cpp/src/qpid/framing/IsInSequenceSet.h')
-rw-r--r--qpid/cpp/src/qpid/framing/IsInSequenceSet.h51
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*/