pit-iterator.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "pit-iterator.hpp"

#include <boost/concept/assert.hpp>
#include <boost/concept_check.hpp>
#include <type_traits>

namespace nfd {
namespace pit {

BOOST_CONCEPT_ASSERT((boost::ForwardIterator<Iterator>));
static_assert(std::is_default_constructible<Iterator>::value,
              "Iterator must be default-constructible");

Iterator::Iterator(const NameTree::const_iterator& ntIt, size_t iPitEntry)
  : m_ntIt(ntIt)
  , m_iPitEntry(iPitEntry)
{
}

Iterator&
Iterator::operator++()
{
  BOOST_ASSERT(m_ntIt != NameTree::const_iterator());
  BOOST_ASSERT(m_iPitEntry < m_ntIt->getPitEntries().size());

  if (++m_iPitEntry >= m_ntIt->getPitEntries().size()) {
    ++m_ntIt;
    m_iPitEntry = 0;
    BOOST_ASSERT(m_ntIt == NameTree::const_iterator() || m_ntIt->hasPitEntries());
  }

  return *this;
}

Iterator
Iterator::operator++(int)
{
  Iterator copy = *this;
  this->operator++();
  return copy;
}

} // namespace pit
} // namespace nfd