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Named.h
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68 lines (57 loc) · 1.77 KB
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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
//
// Named.h: Rcpp R/C++ interface class library -- named object
//
// 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_Named_h
#define Rcpp_Named_h
namespace Rcpp{
class Argument {
public:
Argument() : name(){} ;
Argument( const std::string& name_) : name(name_){}
template<typename T>
inline traits::named_object<T> operator=( const T& t){
return traits::named_object<T>( name, t ) ;
}
std::string name ;
} ;
inline Argument Named( const std::string& name){
return Argument( name );
}
template <typename T>
inline traits::named_object<T> Named( const std::string& name, const T& o){
return traits::named_object<T>( name, o );
}
namespace internal{
class NamedPlaceHolder {
public:
NamedPlaceHolder(){}
~NamedPlaceHolder(){}
Argument operator[]( const std::string& arg) const {
return Argument( arg ) ;
}
Argument operator()(const std::string& arg) const {
return Argument( arg ) ;
}
operator SEXP() const { return R_MissingArg ; }
} ;
} // internal
static internal::NamedPlaceHolder _ ;
} // namespace Rcpp
#endif