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#include "indexer/data_source.hpp"
#include "base/logging.hpp"
#include <algorithm>
#include <limits>
using platform::CountryFile;
using platform::LocalCountryFile;
using namespace std;
namespace
{
class ReadMWMFunctor
{
public:
using Fn = function<void(uint32_t, FeatureSource & src)>;
ReadMWMFunctor(FeatureSourceFactory const & factory, Fn const & fn) : m_factory(factory), m_fn(fn)
{
m_stop = []() { return false; };
}
ReadMWMFunctor(FeatureSourceFactory const & factory, Fn const & fn,
DataSource::StopSearchCallback const & stop)
: m_factory(factory), m_fn(fn), m_stop(stop)
{
}
// Reads features visible at |scale| covered by |cov| from mwm and applies |m_fn| to them.
// Feature reading process consists of two steps: untouched (original) features reading and
// touched (created, edited etc.) features reading.
void operator()(MwmSet::MwmHandle const & handle, covering::CoveringGetter & cov, int scale) const
{
auto src = m_factory(handle);
MwmValue const * mwmValue = handle.GetValue<MwmValue>();
if (mwmValue)
{
// Untouched (original) features reading. Applies covering |cov| to geometry index, gets
// feature ids from it, gets untouched features by ids from |src| and applies |m_fn| by
// ProcessElement.
feature::DataHeader const & header = mwmValue->GetHeader();
CheckUniqueIndexes checkUnique(header.GetFormat() >= version::Format::v5);
// In case of WorldCoasts we should pass correct scale in ForEachInIntervalAndScale.
auto const lastScale = header.GetLastScale();
if (scale > lastScale)
scale = lastScale;
// Use last coding scale for covering (see index_builder.cpp).
covering::Intervals const & intervals = cov.Get<RectId::DEPTH_LEVELS>(lastScale);
ScaleIndex<ModelReaderPtr> index(mwmValue->m_cont.GetReader(INDEX_FILE_TAG), mwmValue->m_factory);
// iterate through intervals
for (auto const & i : intervals)
{
index.ForEachInIntervalAndScale(i.first, i.second, scale, [&](uint32_t index) {
if (!checkUnique(index))
return;
m_fn(index, *src);
});
if (m_stop())
break;
}
}
// Check created features container.
// Need to do it on a per-mwm basis, because Drape relies on features in a sorted order.
// Touched (created, edited) features reading.
auto f = [&](uint32_t i) { m_fn(i, *src); };
src->ForEachAdditionalFeature(cov.GetRect(), scale, f);
}
private:
FeatureSourceFactory const & m_factory;
Fn m_fn;
DataSource::StopSearchCallback m_stop;
};
void ReadFeatureType(function<void(FeatureType &)> const & fn, FeatureSource & src, uint32_t index)
{
FeatureType feature;
switch (src.GetFeatureStatus(index))
{
case FeatureStatus::Deleted:
case FeatureStatus::Obsolete: return;
case FeatureStatus::Created:
case FeatureStatus::Modified:
{
VERIFY(src.GetModifiedFeature(index, feature), ());
break;
}
case FeatureStatus::Untouched:
{
src.GetOriginalFeature(index, feature);
break;
}
}
fn(feature);
}
} // namespace
// FeaturesLoaderGuard ---------------------------------------------------------------------
string FeaturesLoaderGuard::GetCountryFileName() const
{
if (!m_handle.IsAlive())
return string();
return m_handle.GetValue<MwmValue>()->GetCountryFileName();
}
bool FeaturesLoaderGuard::IsWorld() const
{
if (!m_handle.IsAlive())
return false;
return m_handle.GetValue<MwmValue>()->GetHeader().GetType() == feature::DataHeader::world;
}
unique_ptr<FeatureType> FeaturesLoaderGuard::GetOriginalFeatureByIndex(uint32_t index) const
{
auto feature = make_unique<FeatureType>();
if (GetOriginalFeatureByIndex(index, *feature))
return feature;
return {};
}
unique_ptr<FeatureType> FeaturesLoaderGuard::GetOriginalOrEditedFeatureByIndex(uint32_t index) const
{
auto feature = make_unique<FeatureType>();
if (!m_handle.IsAlive())
return {};
ASSERT_NOT_EQUAL(m_source->GetFeatureStatus(index), FeatureStatus::Created, ());
if (GetFeatureByIndex(index, *feature))
return feature;
return {};
}
WARN_UNUSED_RESULT bool FeaturesLoaderGuard::GetFeatureByIndex(uint32_t index,
FeatureType & ft) const
{
if (!m_handle.IsAlive())
return false;
ASSERT_NOT_EQUAL(FeatureStatus::Deleted, m_source->GetFeatureStatus(index),
("Deleted feature was cached. It should not be here. Please review your code."));
if (m_source->GetModifiedFeature(index, ft))
return true;
return GetOriginalFeatureByIndex(index, ft);
}
WARN_UNUSED_RESULT bool FeaturesLoaderGuard::GetOriginalFeatureByIndex(uint32_t index,
FeatureType & ft) const
{
return m_handle.IsAlive() ? m_source->GetOriginalFeature(index, ft) : false;
}
// DataSource ----------------------------------------------------------------------------------
unique_ptr<MwmInfo> DataSource::CreateInfo(platform::LocalCountryFile const & localFile) const
{
MwmValue value(localFile);
feature::DataHeader const & h = value.GetHeader();
if (!h.IsMWMSuitable())
return nullptr;
auto info = make_unique<MwmInfoEx>();
info->m_bordersRect = h.GetBounds();
pair<int, int> const scaleR = h.GetScaleRange();
info->m_minScale = static_cast<uint8_t>(scaleR.first);
info->m_maxScale = static_cast<uint8_t>(scaleR.second);
info->m_version = value.GetMwmVersion();
// Copying to drop the const qualifier.
feature::RegionData regionData(value.GetRegionData());
info->m_data = regionData;
return unique_ptr<MwmInfo>(move(info));
}
unique_ptr<MwmSet::MwmValueBase> DataSource::CreateValue(MwmInfo & info) const
{
// Create a section with rank table if it does not exist.
platform::LocalCountryFile const & localFile = info.GetLocalFile();
unique_ptr<MwmValue> p(new MwmValue(localFile));
p->SetTable(dynamic_cast<MwmInfoEx &>(info));
ASSERT(p->GetHeader().IsMWMSuitable(), ());
return unique_ptr<MwmSet::MwmValueBase>(move(p));
}
pair<MwmSet::MwmId, MwmSet::RegResult> DataSource::RegisterMap(LocalCountryFile const & localFile)
{
return Register(localFile);
}
bool DataSource::DeregisterMap(CountryFile const & countryFile) { return Deregister(countryFile); }
void DataSource::ForEachInIntervals(ReaderCallback const & fn, covering::CoveringMode mode,
m2::RectD const & rect, int scale) const
{
vector<shared_ptr<MwmInfo>> mwms;
GetMwmsInfo(mwms);
covering::CoveringGetter cov(rect, mode);
MwmId worldID[2];
for (shared_ptr<MwmInfo> const & info : mwms)
{
if (info->m_minScale <= scale && scale <= info->m_maxScale &&
rect.IsIntersect(info->m_bordersRect))
{
MwmId const mwmId(info);
switch (info->GetType())
{
case MwmInfo::COUNTRY: fn(GetMwmHandleById(mwmId), cov, scale); break;
case MwmInfo::COASTS: worldID[0] = mwmId; break;
case MwmInfo::WORLD: worldID[1] = mwmId; break;
}
}
}
if (worldID[0].IsAlive())
fn(GetMwmHandleById(worldID[0]), cov, scale);
if (worldID[1].IsAlive())
fn(GetMwmHandleById(worldID[1]), cov, scale);
}
void DataSource::ForEachFeatureIDInRect(FeatureIdCallback const & f, m2::RectD const & rect,
int scale) const
{
auto readFeatureId = [&f](uint32_t index, FeatureSource & src) {
if (src.GetFeatureStatus(index) != FeatureStatus::Deleted)
f(src.GetFeatureId(index));
};
ReadMWMFunctor readFunctor(*m_factory, readFeatureId);
ForEachInIntervals(readFunctor, covering::LowLevelsOnly, rect, scale);
}
void DataSource::ForEachInRect(FeatureCallback const & f, m2::RectD const & rect, int scale) const
{
auto readFeatureType = [&f](uint32_t index, FeatureSource & src) {
ReadFeatureType(f, src, index);
};
ReadMWMFunctor readFunctor(*m_factory, readFeatureType);
ForEachInIntervals(readFunctor, covering::ViewportWithLowLevels, rect, scale);
}
void DataSource::ForClosestToPoint(FeatureCallback const & f, StopSearchCallback const & stop,
m2::PointD const & center, double sizeM, int scale) const
{
auto const rect = MercatorBounds::RectByCenterXYAndSizeInMeters(center, sizeM);
auto readFeatureType = [&f](uint32_t index, FeatureSource & src) {
ReadFeatureType(f, src, index);
};
ReadMWMFunctor readFunctor(*m_factory, readFeatureType, stop);
ForEachInIntervals(readFunctor, covering::CoveringMode::Spiral, rect, scale);
}
void DataSource::ForEachInScale(FeatureCallback const & f, int scale) const
{
auto readFeatureType = [&f](uint32_t index, FeatureSource & src) {
ReadFeatureType(f, src, index);
};
ReadMWMFunctor readFunctor(*m_factory, readFeatureType);
ForEachInIntervals(readFunctor, covering::FullCover, m2::RectD::GetInfiniteRect(), scale);
}
void DataSource::ForEachInRectForMWM(FeatureCallback const & f, m2::RectD const & rect, int scale,
MwmId const & id) const
{
MwmHandle const handle = GetMwmHandleById(id);
if (handle.IsAlive())
{
covering::CoveringGetter cov(rect, covering::ViewportWithLowLevels);
auto readFeatureType = [&f](uint32_t index, FeatureSource & src) {
ReadFeatureType(f, src, index);
};
ReadMWMFunctor readFunctor(*m_factory, readFeatureType);
readFunctor(handle, cov, scale);
}
}
void DataSource::ReadFeatures(FeatureCallback const & fn, vector<FeatureID> const & features) const
{
ASSERT(is_sorted(features.begin(), features.end()), ());
auto fidIter = features.begin();
auto const endIter = features.end();
while (fidIter != endIter)
{
MwmId const & id = fidIter->m_mwmId;
MwmHandle const handle = GetMwmHandleById(id);
if (handle.IsAlive())
{
// Prepare features reading.
auto src = (*m_factory)(handle);
do
{
auto const fts = src->GetFeatureStatus(fidIter->m_index);
ASSERT_NOT_EQUAL(
FeatureStatus::Deleted, fts,
("Deleted feature was cached. It should not be here. Please review your code."));
FeatureType featureType;
if (fts == FeatureStatus::Modified || fts == FeatureStatus::Created)
VERIFY(src->GetModifiedFeature(fidIter->m_index, featureType), ());
else
src->GetOriginalFeature(fidIter->m_index, featureType);
fn(featureType);
} while (++fidIter != endIter && id == fidIter->m_mwmId);
}
else
{
// Skip unregistered mwm files.
while (++fidIter != endIter && id == fidIter->m_mwmId)
;
}
}
}
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