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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2017 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 GNU Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "strategy-choice.hpp"
#include "encoding/tlv-nfd.hpp"
#include "encoding/block-helpers.hpp"
#include "util/concepts.hpp"
namespace ndn {
namespace nfd {
BOOST_CONCEPT_ASSERT((boost::EqualityComparable<StrategyChoice>));
BOOST_CONCEPT_ASSERT((WireEncodable<StrategyChoice>));
BOOST_CONCEPT_ASSERT((WireEncodableWithEncodingBuffer<StrategyChoice>));
BOOST_CONCEPT_ASSERT((WireDecodable<StrategyChoice>));
static_assert(std::is_base_of<tlv::Error, StrategyChoice::Error>::value,
"StrategyChoice::Error must inherit from tlv::Error");
StrategyChoice::StrategyChoice() = default;
StrategyChoice::StrategyChoice(const Block& payload)
{
this->wireDecode(payload);
}
template<encoding::Tag TAG>
size_t
StrategyChoice::wireEncode(EncodingImpl<TAG>& encoder) const
{
size_t totalLength = 0;
totalLength += prependNestedBlock(encoder, tlv::nfd::Strategy, m_strategy);
totalLength += m_name.wireEncode(encoder);
totalLength += encoder.prependVarNumber(totalLength);
totalLength += encoder.prependVarNumber(tlv::nfd::StrategyChoice);
return totalLength;
}
template size_t
StrategyChoice::wireEncode<encoding::EncoderTag>(EncodingImpl<encoding::EncoderTag>&) const;
template size_t
StrategyChoice::wireEncode<encoding::EstimatorTag>(EncodingImpl<encoding::EstimatorTag>&) const;
const Block&
StrategyChoice::wireEncode() const
{
if (m_wire.hasWire())
return m_wire;
EncodingEstimator estimator;
size_t estimatedSize = wireEncode(estimator);
EncodingBuffer buffer(estimatedSize, 0);
wireEncode(buffer);
m_wire = buffer.block();
return m_wire;
}
void
StrategyChoice::wireDecode(const Block& block)
{
if (block.type() != tlv::nfd::StrategyChoice) {
BOOST_THROW_EXCEPTION(Error("expecting StrategyChoice block"));
}
m_wire = block;
m_wire.parse();
Block::element_const_iterator val = m_wire.elements_begin();
if (val != m_wire.elements_end() && val->type() == tlv::Name) {
m_name.wireDecode(*val);
++val;
}
else {
BOOST_THROW_EXCEPTION(Error("missing required Name field"));
}
if (val != m_wire.elements_end() && val->type() == tlv::nfd::Strategy) {
val->parse();
if (val->elements().empty()) {
BOOST_THROW_EXCEPTION(Error("expecting Strategy/Name"));
}
else {
m_strategy.wireDecode(*val->elements_begin());
}
++val;
}
else {
BOOST_THROW_EXCEPTION(Error("missing required Strategy field"));
}
}
StrategyChoice&
StrategyChoice::setName(const Name& name)
{
m_wire.reset();
m_name = name;
return *this;
}
StrategyChoice&
StrategyChoice::setStrategy(const Name& strategy)
{
m_wire.reset();
m_strategy = strategy;
return *this;
}
bool
operator==(const StrategyChoice& a, const StrategyChoice& b)
{
return a.getName() == b.getName() && a.getStrategy() == b.getStrategy();
}
std::ostream&
operator<<(std::ostream& os, const StrategyChoice& sc)
{
return os << "StrategyChoice("
<< "Name: " << sc.getName() << ", "
<< "Strategy: " << sc.getStrategy()
<< ")";
}
} // namespace nfd
} // namespace ndn