ConfigurationTable.h

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#ifndef fhicl_Utilities_ConfigurationTable_h
#define fhicl_Utilities_ConfigurationTable_h

#include "cetlib/exempt_ptr.h"
#include "fhiclcpp/types/Table.h"

namespace fhicl {

  class ParameterSet;
  namespace detail {
    class ParameterBase;
  }

  class ConfigurationTable {
  public:
    virtual ~ConfigurationTable() = default;

    cet::exempt_ptr<fhicl::detail::ParameterBase const>
    parameter_base() const
    {
      return get_parameter_base();
    }

  private:
    virtual cet::exempt_ptr<fhicl::detail::ParameterBase const>
    get_parameter_base() const = 0;
  };

  template <typename T, typename KeysToIgnore = void>
  class WrappedTable : public ConfigurationTable {
  public:
    WrappedTable(fhicl::Name&& name) : table_{std::move(name)} {}
    WrappedTable(fhicl::ParameterSet const& pset) : table_{pset} {}
    auto const&
    operator()() const
    {
      return table_();
    }
    auto const&
    get_PSet() const
    {
      return table_.get_PSet();
    }

  private:
    fhicl::Table<T, KeysToIgnore> table_;
    cet::exempt_ptr<fhicl::detail::ParameterBase const>
    get_parameter_base() const override
    {
      return &table_;
    }
  };
}

// Local variables:
// mode: c++
// End:
#endif /* fhicl_Utilities_ConfigurationTable_h */