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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_STREAMOPERATORS_HH
#define DUNE_STREAMOPERATORS_HH
/** \file
\brief Implementation of stream operators for std::array and std::tuple
*/
#include <array>
#include <tuple>
#include <utility>
#include <dune/common/hybridutilities.hh>
namespace Dune
{
/** @addtogroup Common
@{
*/
//! Print a std::tuple
template<typename... Ts>
inline std::ostream& operator<<(std::ostream& stream, const std::tuple<Ts...>& t)
{
stream<<"[";
if(sizeof...(Ts)>0)
{
Hybrid::forEach(std::make_index_sequence<sizeof...(Ts)-1>{},
[&](auto i){stream<<std::get<i>(t)<<",";});
stream<<std::get<sizeof...(Ts)-1>(t);
}
stream<<"]";
return stream;
}
//! Read a std::tuple
template<typename... Ts>
inline std::istream& operator>>(std::istream& stream, std::tuple<Ts...>& t)
{
Hybrid::forEach(std::make_index_sequence<sizeof...(Ts)>{},
[&](auto i){stream>>std::get<i>(t);});
return stream;
}
//! Print a std::array
template<typename T, std::size_t N>
inline std::ostream& operator<<(std::ostream& stream, const std::array<T,N>& a)
{
stream<<"[";
if(N>0)
{
for(std::size_t i=0; i<N-1; ++i)
stream<<a[i]<<",";
stream<<a[N-1];
}
stream<<"]";
return stream;
}
/** @} */
} // end namespace Dune
#endif
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