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/*
*
* 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.
*
*/
#ifndef _framing_SequenceSet_h
#define _framing_SequenceSet_h
#include "amqp_types.h"
#include "Buffer.h"
#include "SequenceNumber.h"
#include "qpid/framing/reply_exceptions.h"
#include <ostream>
#include <list>
namespace qpid {
namespace framing {
class SequenceSet {
struct Range {
SequenceNumber start;
SequenceNumber end;
Range(SequenceNumber s=0, SequenceNumber e=0);
bool contains(SequenceNumber i) const;
bool intersects(const Range& r) const;
bool merge(const Range& r);
bool mergeable(const SequenceNumber& r) const;
void encode(Buffer& buffer) const;
template <class S> void serialize(S& s) { s(start)(end); }
};
typedef std::list<Range> Ranges;
Ranges ranges;
public:
SequenceSet() {}
explicit SequenceSet(const SequenceNumber& s) { add(s); }
void encode(Buffer& buffer) const;
void decode(Buffer& buffer);
uint32_t size() const;
bool contains(const SequenceNumber& s) const;
void add(const SequenceNumber& s);
void add(const SequenceNumber& start, const SequenceNumber& end);
void add(const SequenceSet& set);
void remove(const SequenceNumber& s);
void remove(const SequenceNumber& start, const SequenceNumber& end);
void remove(const SequenceSet& set);
void clear();
bool empty() const;
template <class T>
T for_each(T& t) const
{
for (Ranges::const_iterator i = ranges.begin(); i != ranges.end(); i++) {
t(i->start, i->end);
}
return t;
}
template <class S> void serialize(S& s) { s.split(*this); s(ranges.begin(), ranges.end()); }
template <class S> void encode(S& s) const { s(uint16_t(ranges.size()*sizeof(Range))); }
template <class S> void decode(S& s) { uint16_t sz; s(sz); ranges.resize(sz/sizeof(Range)); }
friend std::ostream& operator<<(std::ostream&, const SequenceSet&);
};
}} // namespace qpid::framing
#endif
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