Adapts Hint encoding and decoding to new fixed data facade

src/engine/hint.cpp

@@ -1,5 +1,6 @@
 #include "engine/hint.hpp"
 #include "engine/object_encoder.hpp"
+#include "engine/datafacade/datafacade_base.hpp"
 
 #include <boost/assert.hpp>
 
@@ -7,14 +8,23 @@ namespace osrm
 {
 namespace engine
 {
+
+bool Hint::IsValid(const util::Coordinate new_input_coordinates,
+                   const datafacade::BaseDataFacade &facade) const
+{
+    auto is_same_input_coordinate = new_input_coordinates.lon == phantom.input_location.lon &&
+                                    new_input_coordinates.lat == phantom.input_location.lat;
+    return is_same_input_coordinate && phantom.IsValid(facade.GetNumberOfNodes()) &&
+           facade.GetCheckSum() == data_checksum;
+}
+
 std::string Hint::ToBase64() const { return encodeBase64(*this); }
 
 Hint Hint::FromBase64(const std::string &base64Hint)
 {
     BOOST_ASSERT_MSG(base64Hint.size() == ENCODED_HINT_SIZE, "Hint has invalid size");
 
-    auto decoded = decodeBase64<Hint>(base64Hint);
-    return decoded;
+    return decodeBase64<Hint>(base64Hint);
 }
 }
 }