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//======================================================================================================================
//
// This file is part of waLBerla. waLBerla 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 3 of
// the License, or (at your option) any later version.
//
// waLBerla 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 waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
//
//! \file STLIO.h
//! \ingroup core
//! \author Michael Kuron <mkuron@icp.uni-stuttgart.de>
//
//======================================================================================================================
#pragma once
#include <vector>
#include <iostream>
namespace walberla {
template<typename T>
class ParameterList: public std::vector<T> {
public:
ParameterList(): std::vector<T>() {};
template<typename C> ParameterList(C v): std::vector<T>(v.begin(), v.end()) {}
template<typename C> operator C() { return C(std::vector<T>::begin(), std::vector<T>::end()); }
};
//**********************************************************************************************************************
/*!\fn std::ostream& operator<<( std::ostream& os, const vector<Type>& v )
// \brief Global output operator for vectors.
//
// \param os Reference to the output stream.
// \param v Reference to a constant vector object.
// \return Reference to the output stream.
*/
template< typename Type >
std::ostream& operator<<( std::ostream& os, const ParameterList<Type>& v )
{
os << "<";
for (auto it = v.begin(); it != v.end(); ++it)
{
os << *it;
if (it != v.end()-1)
os << ",";
}
os << ">";
return os;
}
//**********************************************************************************************************************
//**********************************************************************************************************************
/*! RAII Object to read an STL container (e.g. vector or list) from a stream
*/
//**********************************************************************************************************************
template< typename Container >
class ContainerStreamReader
{
public:
ContainerStreamReader( std::istream& is ) : is_( is ), success_(false)
{
}
~ContainerStreamReader()
{
if (!success_)
setFailed();
restoreFlags();
}
void read( Container & v )
{
if( !is_ )
return;
storeState();
is_ >> std::skipws;
char character;
if( !( is_ >> character ) || character != '<' )
return;
typename Container::value_type x;
do {
if( !( is_ >> x ) )
return;
v.push_back( x );
if( !( is_ >> character ) )
return;
} while( character == ',' );
if( character != '>' )
return;
success_ = true;
}
private:
void storeState()
{
oldPos_ = is_.tellg();
oldFlags_ = is_.flags();
}
void restoreFlags()
{
is_.flags( oldFlags_ );
}
void setFailed()
{
is_.clear();
is_.seekg( oldPos_ );
is_.setstate( std::istream::failbit );
}
std::istream& is_;
std::istream::pos_type oldPos_;
std::istream::fmtflags oldFlags_;
bool success_;
};
//**********************************************************************************************************************
/*!\fn std::istream& operator>>( std::istream& is, vector<Type>& v )
// \brief Global input operator for vectors.
//
// \param is Reference to the input stream.
// \param v Reference to a vector object.
// \return The input stream.
*/
template< typename Type >
std::istream& operator>>( std::istream& is, ParameterList<Type>& v )
{
ContainerStreamReader< ParameterList<Type> > reader( is );
reader.read( v );
return is;
}
//**********************************************************************************************************************
}