Parameter.hpp

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//===========================================================================
//
// File: Parameter.hpp
//
// Created: Tue Jun  2 16:00:21 2009
//
// Author(s): Bård Skaflestad     <bard.skaflestad@sintef.no>
//            Atgeirr F Rasmussen <atgeirr@sintef.no>
//
// $Date$
//
// $Revision$
//
//===========================================================================

/*
  Copyright 2009, 2010 SINTEF ICT, Applied Mathematics.
  Copyright 2009, 2010 Statoil ASA.

  This file is part of the Open Porous Media project (OPM).

  OPM 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.

  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef OPM_PARAMETER_HEADER
#define OPM_PARAMETER_HEADER

#include <string>
#include <sstream>

#include <opm/core/utility/parameters/ParameterMapItem.hpp>
#include <opm/core/utility/parameters/ParameterStrings.hpp>

namespace Opm {
    namespace parameter {
    class Parameter : public ParameterMapItem {
    public:
        virtual ~Parameter() {}
        virtual std::string getTag() const {return ID_xmltag__param;}
        Parameter(const std::string& value, const std::string& type)
                : value_(value), type_(type) {}
        std::string getValue() const {return value_;}
        std::string getType() const {return type_;}
    private:
        std::string value_;
        std::string type_;
    };

    std::string correct_parameter_tag(const ParameterMapItem& item);
    std::string correct_type(const Parameter& parameter,
                                 const std::string& type);

    template<>
    struct ParameterMapItemTrait<int> {
        static int convert(const ParameterMapItem& item,
                               std::string& conversion_error,
                               const bool)
            {
        conversion_error = correct_parameter_tag(item);
        if (conversion_error != "") {
            return 0;
        }
        const Parameter& parameter = dynamic_cast<const Parameter&>(item);
        conversion_error = correct_type(parameter, ID_param_type__int);
        if (conversion_error != "") {
            return 0;
        }
        std::stringstream stream;
        stream << parameter.getValue();
        int value;
        stream >> value;
        if (stream.fail()) {
            conversion_error = "Conversion to '" +
                                       ID_param_type__int +
                                       "' failed. Data was '" +
                                       parameter.getValue() + "'.\n";
            return 0;
        }
        return value;
        }
        static std::string type() {return ID_param_type__int;}
    };

    template<>
    struct ParameterMapItemTrait<double> {
        static double convert(const ParameterMapItem& item,
                                  std::string& conversion_error,
                                  const bool)
            {
        conversion_error = correct_parameter_tag(item);
        if (conversion_error != "") {
            return 0.0;
        }
        const Parameter& parameter = dynamic_cast<const Parameter&>(item);
        conversion_error = correct_type(parameter, ID_param_type__float);
        if (conversion_error != "") {
            return 0.0;
        }
        std::stringstream stream;
        stream << parameter.getValue();
        double value;
        stream >> value;
        if (stream.fail()) {
            conversion_error = "Conversion to '" +
                                       ID_param_type__float +
                                       "' failed. Data was '" +
                                       parameter.getValue() + "'.\n";
            return 0.0;
        }
        return value;
        }
        static std::string type() {return ID_param_type__float;}
    };

    template<>
    struct ParameterMapItemTrait<bool> {
        static bool convert(const ParameterMapItem& item,
                                std::string& conversion_error,
                                const bool)
            {
        conversion_error = correct_parameter_tag(item);
        if (conversion_error != "") {
            return false;
        }
        const Parameter& parameter = dynamic_cast<const Parameter&>(item);
        conversion_error = correct_type(parameter, ID_param_type__bool);
        if (conversion_error != "") {
            return false;
        }
        if (parameter.getValue() == ID_true) {
            return true;
        } else if (parameter.getValue() == ID_false) {
            return false;
        } else {
            conversion_error = "Conversion failed. Data was '" +
                                       parameter.getValue() +
                                       "', but should be one of '" +
                                       ID_true + "' or '" + ID_false + "'.\n";
            return false;
        }
        }
        static std::string type() {return ID_param_type__bool;}
    };

    template<>
    struct ParameterMapItemTrait<std::string> {
        static std::string convert(const ParameterMapItem& item,
                                       std::string& conversion_error,
                                       const bool)
            {
        conversion_error = correct_parameter_tag(item);
        if (conversion_error != "") {
            return "";
        }
        const Parameter& parameter = dynamic_cast<const Parameter&>(item);
        conversion_error = correct_type(parameter, ID_param_type__string);
        if (conversion_error != "") {
            return "";
        }
        return parameter.getValue();
        }
        static std::string type() {return ID_param_type__string;}
    };
    } // namespace parameter
} // namespace Opm
#endif  // OPM_PARAMETER_HPP