Rcpp/inst/include/Rcpp/clone.h at master · RcppCore/Rcpp

41 lines (35 loc) · 1.22 KB

// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-

// clone.h: Rcpp R/C++ interface class library -- clone RObject's

// 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_clone_h

#define Rcpp_clone_h

#include <RcppCommon.h>

namespace Rcpp{

/* cloning type T is possible if :

- T can be converted to SEXP

- T has a SEXP constructor

template <typename T> T clone(const T& object) {

Shield<SEXP> x(const_cast<T&>(object));

Shield<SEXP> copy(Rf_duplicate(x));

return T((SEXP)copy);

}

} // namespace Rcpp

#endif

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