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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// S4.h: Rcpp R/C++ interface class library -- S4 objects
//
// Copyright (C) 2010 - 2013 Dirk Eddelbuettel and Romain Francois
//
// 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_S4_h
#define Rcpp_S4_h
namespace Rcpp{
/**
* S4 object
*/
RCPP_API_CLASS(S4_Impl) {
public:
RCPP_GENERATE_CTOR_ASSIGN(S4_Impl)
S4_Impl(){} ;
/**
* checks that x is an S4 object and wrap it.
*
* @param x must be an S4 object
*/
S4_Impl(SEXP x) {
if( ! ::Rf_isS4(x) ) throw not_s4() ;
Storage::set__(x) ;
}
S4_Impl& operator=( SEXP other ){
Storage::set__( other ) ;
return *this ;
}
/**
* Creates an S4 object of the requested class.
*
* @param klass name of the target S4 class
* @throw S4_creation_error if klass does not map to a known S4 class
*/
S4_Impl( const std::string& klass ){
Shield<SEXP> x( R_do_new_object(R_do_MAKE_CLASS(klass.c_str())) );
if (!Rf_inherits(x, klass.c_str()))
throw S4_creation_error( klass ) ;
Storage::set__(x) ;
}
/**
* Indicates if this object is an instance of the given S4 class
*/
bool is( const std::string& clazz) const ;
/**
* @throw not_s4 if x is not an S4 class
*/
void update(SEXP x){
if( ! ::Rf_isS4(x) ) throw not_s4() ;
}
} ;
typedef S4_Impl<PreserveStorage> S4 ;
} // namespace Rcpp
#endif
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