ValidateThenSet.h

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#ifndef fhiclcpp_types_detail_ValidateThenSet_h
#define fhiclcpp_types_detail_ValidateThenSet_h

#include "cetlib/exempt_ptr.h"
#include "fhiclcpp/ParameterSet.h"
#include "fhiclcpp/types/detail/ParameterBase.h"
#include "fhiclcpp/types/detail/ParameterWalker.h"

#include <set>
#include <string>
#include <vector>

namespace fhicl {
  namespace detail {

    class ValidateThenSet
      : public ParameterWalker<tt::const_flavor::require_non_const> {
    public:
      ValidateThenSet(fhicl::ParameterSet const& pset,
                      std::set<std::string> const& keysToIgnore)
        : pset_{pset}
        , ignorableKeys_{keysToIgnore}
        , userKeys_{pset.get_all_keys()}
        , missingParameters_{}
      {
        cet::sort_all(userKeys_);
      }

      void check_keys();

    private:
      bool before_action(ParameterBase& p) override;
      void after_action(ParameterBase& p) override;
      void enter_sequence(SequenceBase& p) override;
      void delegated_parameter(DelegateBase&) override;

      void
      enter_table(TableBase&) override
      {}
      void
      atom(AtomBase&) override
      {}

      ParameterSet const& pset_;
      std::set<std::string> ignorableKeys_;
      std::vector<std::string> userKeys_;
      std::vector<cet::exempt_ptr<ParameterBase>> missingParameters_;
    };
  }
}

#endif /* fhiclcpp_types_detail_ValidateThenSet_h */

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