WeakReference.cpp

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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// WeakReference.cpp: Rcpp R/C++ interface class library -- weak references
//
// Copyright (C) 2009 - 2011    Romain Francois and Dirk Eddelbuettel
//
// 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/>.

#include <Rcpp/WeakReference.h>
#include <Rcpp/RObject.h>

namespace Rcpp{
        
    WeakReference::WeakReference( SEXP x) : RObject(){
        if( TYPEOF(x) == WEAKREFSXP ){
            setSEXP(x) ; 
        } else{
            throw not_compatible( "not a weak reference" ) ;
        }
    }
        
    SEXP WeakReference::key() {
        return R_WeakRefKey(m_sexp) ;
    }
        
    SEXP WeakReference::value() {
        return R_WeakRefValue(m_sexp);
    }
        
    WeakReference::WeakReference( const WeakReference& other ) : RObject( other.asSexp() ){}
        
    WeakReference& WeakReference::operator=(const WeakReference& other){
        setSEXP( other.asSexp() );
        return *this;
    }
        
}
// namesapce