Parameter.cpp

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/*  This file is part of Charon.

 Charon is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 Charon 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 Charon.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <charon-core/ParameterFile.hxx>
#include <charon-core/Parameter.hxx>

// ====================   class AbstractParameter   =========================

AbstractParameter::AbstractParameter() :
    _parent(0) {
}

void AbstractParameter::init(ParameteredObject* parent,
        const std::string& name) {
    if(_parent)
        throw std::runtime_error(std::string("Parameter \"") + name + "\" already assigned");
    if(!parent)
        throw std::runtime_error("Setting invalid parent object!");
    if(!name.length())
        throw std::runtime_error("Invalid name: length 0");

    _parent = parent;
    _name   = name;
}

AbstractParameter::~AbstractParameter() {
}

ParameteredObject& AbstractParameter::getParent() {
    return *_parent;
}

const ParameteredObject& AbstractParameter::getParent() const {
    return *_parent;
}

std::string AbstractParameter::getName() const {
    return _name;
}

std::ostream & operator<<(
        std::ostream& os, const AbstractParameter& parameter) {
    parameter.intoStream(os);
    return os;
}

std::string AbstractParameter::_followLink(
        const ParameterFile& pf, const std::string paramName) const {
    if (pf.isSet(paramName)) {
        std::string refName = pf.get<std::string>(paramName);
        if(refName.size() > 0 && refName.substr(0,1) == "@") {
            refName = refName.erase(0,1);
            return refName;
        }
    }
    return paramName;
}