OptionalAtom.icc

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#include "fhiclcpp/detail/printing_helpers.h"
#include "fhiclcpp/types/detail/strip_containing_names.h"

namespace fhicl {

  template <typename T>
  OptionalAtom<T>::OptionalAtom(Name&& name)
    : OptionalAtom<T>::OptionalAtom(std::move(name), Comment(""))
  {}

  template <typename T>
  OptionalAtom<T>::OptionalAtom(Name&& name,
                                Comment&& comment )
    : AtomBase{std::move(name), std::move(comment), par_style::OPTIONAL, detail::AlwaysUse()}
    , RegisterIfTableMember{this}
  {
    NameStackRegistry::end_of_ctor();
  }

  template <typename T>
  OptionalAtom<T>::OptionalAtom(Name&& name,
                                Comment&& comment,
                                std::function<bool()> maybeUse)
    : AtomBase{std::move(name), std::move(comment), par_style::OPTIONAL_CONDITIONAL, maybeUse}
    , RegisterIfTableMember{this}
  {
    NameStackRegistry::end_of_ctor();
  }

  template <typename T>
  std::string
  OptionalAtom<T>::get_stringified_value() const
  {
    std::stringstream oss;
    if (has_value_) {
      using namespace detail::yes_defaults;
      oss << maybe_quotes<T>(value_) ;
    }
    else {
      using namespace detail::no_defaults;
      oss << expected_types<T>();
    }
    return oss.str();
  }

  template <typename T>
  void
  OptionalAtom<T>::do_set_value(fhicl::ParameterSet const& pset, bool const trimParent)
  {
    std::string const& rkey = key();
    std::string const& key = trimParent ? detail::strip_first_containing_name(rkey) : rkey;
    has_value_ = pset.get_if_present<T>(key, value_);
  }

}

// Local variables:
// mode: c++
// End: