Properties.cpp

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/* ============================================================
 *
 * This file is part of the RSC project
 *
 * Copyright (C) 2010, 2011 Jan Moringen
 *
 * This file may be licensed under the terms of the
 * GNU Lesser General Public License Version 3 (the ``LGPL''),
 * or (at your option) any later version.
 *
 * Software distributed under the License is distributed
 * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
 * express or implied. See the LGPL for the specific language
 * governing rights and limitations.
 *
 * You should have received a copy of the LGPL along with this
 * program. If not, go to http://www.gnu.org/licenses/lgpl.html
 * or write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The development of this software was supported by:
 *   CoR-Lab, Research Institute for Cognition and Robotics
 *     Bielefeld University
 *
 * ============================================================ */

#include "Properties.h"

namespace rsc {
namespace runtime {

// Properties implementation

template <typename T>
bool anyEqual(boost::any lhs, boost::any rhs) {
    return boost::any_cast<T>(lhs) == boost::any_cast<T>(rhs);
}

bool Properties::operator==(const Properties& other) const {
    if (this->size() != other.size())
    return false;

    for (Properties::const_iterator it = other.begin();
     it != other.end(); ++it) {
    Properties::const_iterator it_ = this->find(it->first);
    if (it_ == this->end())
        return false;

    boost::any myValue    = it_->second;
    boost::any otherValue = it->second;

    if (myValue.type() != otherValue.type())
        return false;

    if (myValue.type() == typeid(std::string)) {
        if (!anyEqual<std::string>(myValue, otherValue))
        return false;
    } else if (myValue.type() == typeid(bool)) {
        if (!anyEqual<bool>(myValue, otherValue))
        return false;
    } else if (myValue.type() == typeid(int)) {
        if (!anyEqual<int>(myValue, otherValue))
        return false;
    } else if (myValue.type() == typeid(unsigned int)) {
        if (!anyEqual<unsigned int>(myValue, otherValue))
        return false;
    } else if (myValue.type() == typeid(double)) {
        if (!anyEqual<double>(myValue, otherValue))
        return false;
    } else {
        throw std::runtime_error(boost::str(boost::format("Cannot compare values of type %1%")
                        % typeName(myValue.type())));
    }
    }
    return true;
}

Properties&
Properties::operator<<=(const Properties& other) {
    for (Properties::const_iterator it = other.begin();
         it != other.end(); ++it) {
    (*this)[it->first] = it->second;
    }

    return *this;
}

bool
Properties::has(const std::string& name) const throw () {
    return find(name) != end();
}

// Free functions.

Properties operator<<(const Properties& Properties1,
        const Properties& Properties2) {
    Properties result;
    for (Properties::const_iterator it = Properties1.begin();
            it != Properties1.end(); ++it) {
        result[it->first] = it->second;
    }
    for (Properties::const_iterator it = Properties2.begin();
            it != Properties2.end(); ++it) {
        result[it->first] = it->second;
    }
    return result;
}

} }