Symbols.h

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* (c) Copyright 1998-2024 CERN for the benefit of the LHCb and ATLAS collaborations *
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* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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#pragma once
 
#include <Gaudi/Decays/Nodes.h>
#include <GaudiKernel/Kernel.h>
#include <GaudiKernel/VectorMap.h>
#include <map>
#include <string>
#include <vector>
 
namespace Gaudi {
  class IParticlePropertySvc;
}

namespace Gaudi::Decays {
  class GAUDI_API Symbols {
  public:
    enum { InvalidService = 400, InvalidSymbol, NoParticles, NoSymbols };

    typedef std::vector<std::string>           Names;
    typedef std::map<std::string, std::string> CCMap;

    const CCMap& cc() const;

    bool valid( std::string sym ) const;
    const std::string& symbol( std::string sym ) const;
    StatusCode symbol( std::string sym, Decays::Node& node ) const;

    size_t symbols( Names& names ) const;
    StatusCode particles( const Gaudi::Interfaces::IParticlePropertySvc* svc, Names& parts ) const;

    bool addSymbol( std::string sym, const Decays::iNode& node, const std::string& help,
                    const std::string& ccsym = "" );

    void addCC( std::string sym, std::string ccsym = "" );

    static Symbols& instance();
 
  protected:
    Symbols();
    virtual ~Symbols() = default;
 
  private:
    Symbols( const Symbols& );
    Symbols& operator=( const Symbols& );
 
    typedef GaudiUtils::VectorMap<std::string, Decays::Nodes::_Node> NodeMap;
    typedef std::map<std::string, std::string>                       HelpMap;

    NodeMap m_nodes;
    HelpMap m_help;
    CCMap m_cc;
  };
} // namespace Gaudi::Decays