New cpp folder structure

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

libs/search/features_layer.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "search/cbv.hpp"
+#include "search/model.hpp"
+#include "search/token_range.hpp"
+
+#include "base/string_utils.hpp"
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+namespace search
+{
+// This structure represents a part of search query interpretation -
+// when to a substring of tokens [m_startToken, m_endToken) is matched
+// with a set of m_features of the same m_type.
+struct FeaturesLayer
+{
+  FeaturesLayer();
+
+  void Clear();
+
+  // Non-owning ptr to a sorted vector of features.
+  std::vector<uint32_t> const * m_sortedFeatures = nullptr;
+  // Fetch vector of Features, described by this layer (used for CITY, SUBURB).
+  std::function<CBV ()> m_getFeatures;
+
+  strings::UniString m_subQuery;
+  TokenRange m_tokenRange;
+  Model::Type m_type;
+
+  // Meaningful only when m_type equals to BUILDING.
+  // When true, m_sortedFeatures contains only features retrieved from
+  // search index by m_subQuery, and it's necessary for Geocoder to
+  // perform additional work to retrieve features matching by house number.
+  bool m_hasDelayedFeatures;
+
+  bool m_lastTokenIsPrefix;
+};
+
+std::string DebugPrint(FeaturesLayer const & layer);
+}  // namespace search