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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
//
// converter.h: Rcpp R/C++ interface class library -- converters
//
// 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__vector__converters_h
#define Rcpp__vector__converters_h
namespace Rcpp{
namespace internal {
template <int RTYPE>
class element_converter{
public:
typedef typename ::Rcpp::traits::storage_type<RTYPE>::type target ;
template <typename T>
static target get( const T& input ){
return caster<T,target>(input) ;
}
static target get( const target& input ){
return input ;
}
} ;
template <int RTYPE>
class string_element_converter {
public:
typedef SEXP target ;
template <typename T>
static SEXP get( const T& input){
std::string out(input) ;
RCPP_DEBUG_1( "string_element_converter::get< T = %s >()", DEMANGLE(T) )
return Rf_mkChar( out.c_str() ) ;
}
static SEXP get(const std::string& input){
RCPP_DEBUG( "string_element_converter::get< std::string >()" )
return Rf_mkChar( input.c_str() ) ;
}
static SEXP get( const Rcpp::String& input) ;
static SEXP get(const char& input){
RCPP_DEBUG( "string_element_converter::get< char >()" )
return Rf_mkCharLen( &input, 1 ) ;
}
// assuming a CHARSXP
static SEXP get(SEXP x){
RCPP_DEBUG( "string_element_converter::get< SEXP >()" )
return x;
}
} ;
template <int RTYPE>
class generic_element_converter {
public:
typedef SEXP target ;
template <typename T>
static SEXP get( const T& input){
return ::Rcpp::wrap( input ) ;
}
static SEXP get( const char* input){
return ::Rcpp::wrap( input );
}
static SEXP get(SEXP input){
return input ;
}
} ;
}
namespace traits{
template <int RTYPE> struct r_vector_element_converter{
typedef typename ::Rcpp::internal::element_converter<RTYPE> type ;
} ;
template<> struct r_vector_element_converter<STRSXP>{
typedef ::Rcpp::internal::string_element_converter<STRSXP> type ;
} ;
template<> struct r_vector_element_converter<VECSXP>{
typedef ::Rcpp::internal::generic_element_converter<VECSXP> type ;
} ;
template<> struct r_vector_element_converter<EXPRSXP>{
typedef ::Rcpp::internal::generic_element_converter<EXPRSXP> type ;
} ;
}
}
#endif
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