configuration_config.tpp

/*---------------------------------------------------------------------------*\
*
*  bitpit
*
*  Copyright (C) 2015-2021 OPTIMAD engineering Srl
*
*  -------------------------------------------------------------------------
*  License
*  This file is part of bitpit.
*
*  bitpit is free software: you can redistribute it and/or modify it
*  under the terms of the GNU Lesser General Public License v3 (LGPL)
*  as published by the Free Software Foundation.
*
*  bitpit 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 Lesser General Public
*  License for more details.
*
*  You should have received a copy of the GNU Lesser General Public License
*  along with bitpit. If not, see <http://www.gnu.org/licenses/>.
*
\*---------------------------------------------------------------------------*/
#ifndef __BITPIT_CONFIGURATION_TPP__
#define __BITPIT_CONFIGURATION_TPP__
 
#include <sstream>
#include <stdexcept>
 
namespace bitpit {

template<typename T>
T Config::get(const std::string &key) const
{
    T value;
    if (std::istringstream(get(key)) >> value) {
        return value;
    } else {
        throw std::runtime_error("Unable to convert the option \"" + key + "\"");
    }
}

template<typename T>
T Config::get(const std::string &key, const T &fallback) const
{
    if (hasOption(key)) {
        return get<T>(key);
    } else {
        return fallback;
    }
}

template<typename T>
void Config::set(const std::string &key, const T &value)
{
    std::ostringstream valueStream;
    if (valueStream << value) {
        set(key, valueStream.str());
    } else {
        throw std::runtime_error("Unable to convert the option \"" + key + "\"");
    }
}
 
}
 
#endif