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// named_object.h: Rcpp R/C++ interface class library -- named SEXP
//
// Copyright (C) 2010 - 2020 Dirk Eddelbuettel and Romain Francois
// Copyright (C) 2021 - 2025 Dirk Eddelbuettel, Romain Francois and Iñaki Ucar
//
// This file is part of Rcpp.
//
// Rcpp is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Rcpp is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
#ifndef Rcpp__traits__named_object__h
#define Rcpp__traits__named_object__h
#include <type_traits>
namespace Rcpp{
class Argument ;
namespace traits{
template <typename T> struct needs_protection : false_type{} ;
template <> struct needs_protection<SEXP> : true_type{} ;
template <typename T> class named_object {
public:
named_object( const std::string& name_, const T& o_) :
name(name_), object(o_){}
const std::string& name;
const T& object;
};
template <> class named_object<SEXP> {
public: // #nocov start
named_object( const std::string& name_, const SEXP& o_):
name(name_), object(o_), token(R_NilValue) {
token = Rcpp_PreciousPreserve(object);
}
named_object( const named_object<SEXP>& other ) :
name(other.name), object(other.object), token(other.token) {
token = Rcpp_PreciousPreserve(object);
}
~named_object() {
Rcpp_PreciousRelease(token);
} // #nocov end
const std::string& name;
SEXP object;
private:
SEXP token;
};
template <typename T> struct is_named : public false_type{};
template <typename T> struct is_named< named_object<T> > : public true_type {};
template <> struct is_named< Rcpp::Argument > : public true_type {};
template <typename... T> struct is_any_named : public false_type {};
template <typename T> struct is_any_named<T> : public is_named<T>::type {};
template <typename T, typename... TArgs>
struct is_any_named<T, TArgs...>
: public std::conditional<
is_any_named<T>::value,
std::true_type,
is_any_named<TArgs...>>::type {};
} // namespace traits
} // namespace Rcpp
#endif
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