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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 4 -*-
//
// nona.h: Rcpp R/C++ interface class library -- noNA handling
//
// 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/>.
#ifndef RCPP_SUGAR_NONA_NONA_H
#define RCPP_SUGAR_NONA_NONA_H
namespace Rcpp{
namespace sugar {
template <int RTYPE, bool NA, typename VECTOR>
class Nona : public Rcpp::VectorBase<RTYPE,false, Nona<RTYPE,NA,VECTOR> > {
public:
typedef typename Rcpp::VectorBase<RTYPE,NA,VECTOR> SUGAR_TYPE ;
typedef typename Rcpp::traits::storage_type<RTYPE>::type STORAGE ;
Nona( const SUGAR_TYPE& expr) : data(expr.get_ref()){}
inline R_xlen_t size() const { return data.size() ; }
inline STORAGE operator[](R_xlen_t i) const { return data[i] ; }
private:
const VECTOR& data ;
} ;
// specialization when the expression is actually a vector expression
template <int RTYPE, bool NA>
class Nona< RTYPE,NA,Rcpp::Vector<RTYPE> > : public Rcpp::VectorBase<RTYPE,false, Nona<RTYPE,NA,Rcpp::Vector<RTYPE> > > {
public:
typedef typename Rcpp::VectorBase<RTYPE,NA, Rcpp::Vector<RTYPE> > SUGAR_TYPE ;
typedef typename Rcpp::traits::storage_type<RTYPE>::type STORAGE ;
typedef typename Rcpp::Vector<RTYPE>::const_iterator iterator ;
Nona( const SUGAR_TYPE& expr) : data(expr.get_ref().begin()), n(expr.size()){}
inline R_xlen_t size() const { return n ; }
inline STORAGE operator[](R_xlen_t i) const { return data[i] ; }
private:
iterator data ;
R_xlen_t n ;
} ;
template <typename T>
class NonaPrimitive {
public:
NonaPrimitive( T t) : x(t){}
inline operator T(){ return x ; }
private:
T x ;
} ;
}
template <int RTYPE, bool NA, typename VECTOR>
inline sugar::Nona<RTYPE,NA,VECTOR> noNA( const Rcpp::VectorBase<RTYPE,NA,VECTOR>& vec ){
return sugar::Nona<RTYPE,NA,VECTOR>( vec ) ;
}
inline sugar::NonaPrimitive<double> noNA( double x ){
return sugar::NonaPrimitive<double>( x ) ;
}
inline sugar::NonaPrimitive<int> noNA( int x ){
return sugar::NonaPrimitive<int>( x ) ;
}
}
#endif
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