search/lazy_centers_table.cpp - master - githubmirror/omim

search/lazy_centers_table.cpp

64 строки1 KB

Mikhail Gorbushin

[indexer] Add const to MwmValue *

24 окт 2019, 19:32

24 окт 2019, 19:32aabae24

#include "search/lazy_centers_table.hpp"

#include "indexer/mwm_set.hpp"

#include "platform/mwm_traits.hpp"

#include "defines.hpp"

namespace search
{
LazyCentersTable::LazyCentersTable(MwmValue const & value)
  : m_value(value), m_state(STATE_NOT_LOADED), m_reader(std::unique_ptr<ModelReader>())
{
}

void LazyCentersTable::EnsureTableLoaded()
{
  if (m_state != STATE_NOT_LOADED)
    return;

  if (!m_value.m_cont.IsExist(CENTERS_FILE_TAG))
  {
    m_state = STATE_FAILED;
    return;
  }

  m_reader = m_value.m_cont.GetReader(CENTERS_FILE_TAG);
  if (!m_reader.GetPtr())
  {
    m_state = STATE_FAILED;
    return;
  }

  version::MwmTraits traits(m_value.GetMwmVersion());
  auto const format = traits.GetCentersTableFormat();

  if (format == version::MwmTraits::CentersTableFormat::PlainEliasFanoMap)
  {
    m_table =
        CentersTable::LoadV0(*m_reader.GetPtr(), m_value.GetHeader().GetDefGeometryCodingParams());
  }
  else if (format == version::MwmTraits::CentersTableFormat::EliasFanoMapWithHeader)
  {
    m_table = CentersTable::LoadV1(*m_reader.GetPtr());
  }
  else
  {
    CHECK(false, ("Unknown centers table format."));
  }

  if (m_table)
    m_state = STATE_LOADED;
  else
    m_state = STATE_FAILED;
}

bool LazyCentersTable::Get(uint32_t id, m2::PointD & center)
{
  EnsureTableLoaded();
  if (m_state != STATE_LOADED)
    return false;
  return m_table->Get(id, center);
}
}  // namespace search