New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/search/mwm_context.cpp

@@ -0,0 +1,74 @@
+#include "search/mwm_context.hpp"
+#include "search/house_to_street_table.hpp"
+
+#include "indexer/cell_id.hpp"
+#include "indexer/fake_feature_ids.hpp"
+#include "indexer/feature_source.hpp"
+
+
+namespace search
+{
+void CoverRect(m2::RectD const & rect, int scale, covering::Intervals & result)
+{
+  covering::CoveringGetter covering(rect, covering::ViewportWithLowLevels);
+  auto const & intervals = covering.Get<RectId::DEPTH_LEVELS>(scale);
+  result.insert(result.end(), intervals.begin(), intervals.end());
+}
+
+MwmContext::MwmContext(MwmSet::MwmHandle handle)
+  : m_handle(std::move(handle))
+  , m_value(*m_handle.GetValue())
+  , m_vector(m_value.m_cont, m_value.GetHeader(), m_value.m_table.get(), m_value.m_metaDeserializer.get())
+  , m_index(m_value.m_cont.GetReader(INDEX_FILE_TAG), m_value.m_factory)
+  , m_centers(m_value)
+  , m_editableSource(m_handle)
+{
+}
+
+MwmContext::MwmContext(MwmSet::MwmHandle handle, MwmType type)
+  : MwmContext(std::move(handle))
+{
+  m_type = type;
+}
+
+std::unique_ptr<FeatureType> MwmContext::GetFeature(uint32_t index) const
+{
+  std::unique_ptr<FeatureType> ft;
+  switch (GetEditedStatus(index))
+  {
+  case FeatureStatus::Deleted:
+  case FeatureStatus::Obsolete:
+    return ft;
+  case FeatureStatus::Modified:
+  case FeatureStatus::Created:
+    ft = m_editableSource.GetModifiedFeature(index);
+    CHECK(ft, ());
+    return ft;
+  case FeatureStatus::Untouched:
+    auto ft = m_vector.GetByIndex(index);
+    CHECK(ft, ());
+    ft->SetID(FeatureID(GetId(), index));
+    return ft;
+  }
+  UNREACHABLE();
+}
+
+std::optional<uint32_t> MwmContext::GetStreet(uint32_t index) const
+{
+  /// @todo Should store and fetch parent street id in Editor (now it has only name).
+  if (feature::FakeFeatureIds::IsEditorCreatedFeature(index))
+    return {};
+
+  if (!m_value.m_house2street)
+    m_value.m_house2street = LoadHouseToStreetTable(m_value);
+
+  auto const res = m_value.m_house2street->Get(index);
+  if (res)
+  {
+    ASSERT(res->m_type == HouseToStreetTable::StreetIdType::FeatureId, ());
+    return res->m_streetId;
+  }
+  return {};
+}
+
+}  // namespace search