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// Copyright (C) 2013 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_DottedPairProxy_h
#define Rcpp_DottedPairProxy_h
namespace Rcpp{
template <typename CLASS>
class DottedPairProxyPolicy {
public:
class DottedPairProxy : public GenericProxy<DottedPairProxy> {
public:
DottedPairProxy( CLASS& v, int index_ ): node(R_NilValue){
if( index_ >= v.length() ) {
const char* fmt = "Dotted Pair index is out of bounds: "
"[index=%i; extent=%i].";
throw index_out_of_bounds(fmt, index_, v.length());
}
SEXP x = v ; /* implicit conversion */
for( int i = 0; i<index_; i++, x = CDR(x) ) ;
node = x ;
}
DottedPairProxy& operator=(const DottedPairProxy& rhs) {
return set(rhs.get());
}
DottedPairProxy& operator=(SEXP rhs) {
return set(rhs) ;
}
template <typename T>
DottedPairProxy& operator=(const T& rhs);
template <typename T>
DottedPairProxy& operator=(const traits::named_object<T>& rhs);
template <typename T> operator T() const;
inline SEXP get() const {
return CAR(node);
}
inline operator SEXP() const {
return get() ;
}
inline DottedPairProxy& set(SEXP x){
SETCAR( node, x ) ;
return *this ;
}
inline DottedPairProxy& set(SEXP x, const char* name){
SETCAR( node, x ) ;
SEXP rhsNameSym = ::Rf_install( name );
SET_TAG( node, rhsNameSym ) ;
return *this ;
}
private:
SEXP node ;
} ;
class const_DottedPairProxy : public GenericProxy<const_DottedPairProxy>{
public:
const_DottedPairProxy( const CLASS& v, int index_ ): node(R_NilValue){
if( index_ >= v.length() ) {
const char* fmt = "Dotted Pair index is out of bounds: "
"[index=%i; extent=%i].";
throw index_out_of_bounds(fmt, index_, v.length());
}
SEXP x = v ; /* implicit conversion */
for( int i = 0; i<index_; i++, x = CDR(x) ) ;
node = x ;
}
template <typename T> operator T() const;
inline SEXP get() const {
return CAR(node);
}
inline operator SEXP() const {
return get() ;
}
private:
SEXP node ;
} ;
DottedPairProxy operator[]( int i){
return DottedPairProxy( static_cast<CLASS&>(*this), i ) ;
}
const_DottedPairProxy operator[](int i) const{
return const_DottedPairProxy( static_cast<const CLASS&>(*this), i ) ;
}
} ;
}
#endif
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