DottedPair.cpp

Go to the documentation of this file.

// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// DottedPair.cpp: Rcpp R/C++ interface class library -- dotted pair lists
// base class of Language and Pairlist
//
// Copyright (C) 2010 - 2011 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/>.

#include <Rcpp/DottedPair.h>

namespace Rcpp {

    DottedPair::~DottedPair(){}
    DottedPair::DottedPair() : RObject(){}
        
    DottedPair& DottedPair::operator=(const DottedPair& other){
        setSEXP( other.asSexp() ) ;
        return *this ;
    }
        
    void DottedPair::remove( const size_t& index ) {
        if( static_cast<R_len_t>(index) >= Rf_length(m_sexp) ) throw index_out_of_bounds() ;
        if( index == 0 ){
            setSEXP( CDR( m_sexp) ) ;
        } else{
            SEXP x = m_sexp ;
            size_t i=1;
            while( i<index ){ x = CDR(x) ; i++; }
            SETCDR( x, CDDR(x) ) ;
        }
    }
        
    DottedPair::Proxy::Proxy( DottedPair& v, const size_t& index_ ) : node(){
        if( static_cast<R_len_t>(index_) >= v.length() ) throw index_out_of_bounds() ;
        SEXP x = v ; /* implicit conversion */
        size_t i = 0 ;
        while( i<index_) {
            x = CDR(x) ;
            ++i ;
        }
        node = x ;
    }
        
    DottedPair::Proxy& DottedPair::Proxy::operator=(const Proxy& rhs){
        SEXP y = rhs ; /* implicit conversion */
        SETCAR( node, y ) ;
        return *this ;
    }
        
    DottedPair::Proxy& DottedPair::Proxy::operator=(SEXP rhs){
        SETCAR( node, rhs) ;
        return *this ;
    }
        
    const DottedPair::Proxy DottedPair::operator[]( int i ) const {
        return Proxy( const_cast<DottedPair&>(*this), i) ;
    }
    DottedPair::Proxy DottedPair::operator[]( int i ) {
        return Proxy( *this, i );
    }
        
        
} // namespace Rcpp