Event/RecEvent/include/Event/ProtoParticle.h

@@ -186,6 +186,13 @@ namespace LHCb {
           10000 // The last official flag value. Private user variables should use flags greater than this value
     };
 
+    // functions necessary for AdditionalInfo to work with Gaudi::Property
+    friend std::string   toString( additionalInfo e );
+    friend std::ostream& toStream( additionalInfo e, std::ostream& os ) {
+      return os << std::quoted( toString( e ), '\'' );
+    }
+    friend StatusCode parse( additionalInfo& bt, std::string in );
+
     /// Copy constructor. Creates a new ProtoParticle with the same physics information
     ProtoParticle( const LHCb::ProtoParticle& proto )
         : KeyedObject<int>()

Event/RecEvent/src/ProtoParticle.cpp

@@ -20,6 +20,25 @@
 
 //-----------------------------------------------------------------------------
 
+namespace LHCb {
+  std::string toString( ProtoParticle::additionalInfo e ) {
+    const auto& table = ProtoParticle::s_additionalInfoTypMap();
+    auto        i = std::find_if( table.begin(), table.end(), [&]( const auto& entry ) { return entry.second == e; } );
+    if ( i == table.end() ) throw std::invalid_argument{"invalid value for ProtoParticle::addtionalInfo"};
+    return i->first;
+  }
+  StatusCode parse( ProtoParticle::additionalInfo& ai, std::string in ) {
+    if ( in.size() > 1 && in.front() == in.back() && ( in.front() == '\'' || in.front() == '\"' ) ) {
+      in = in.substr( 1, in.size() - 2 );
+    }
+    const auto& table = ProtoParticle::s_additionalInfoTypMap();
+    auto        iter  = table.find( in );
+    if ( iter == table.end() ) return StatusCode::FAILURE;
+    ai = iter->second;
+    return StatusCode::SUCCESS;
+  }
+} // namespace LHCb
+
 // Fillstream method
 std::ostream& LHCb::ProtoParticle::fillStream( std::ostream& s ) const {
   s << "{"