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TypeInfo.hpp

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/*******************************************************************************
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 16, D-52074 Aachen, Germany
 * phone: ++49-241-80-27910,
 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS 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 this program.  If not, see <http://www.gnu.org/licenses/>.
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#ifndef WNS_TYPEINFO_HPP
#define WNS_TYPEINFO_HPP

#include <WNS/IOutputStreamable.hpp>
#include <WNS/demangle.hpp>

#include <typeinfo>
#include <string>

namespace wns {
    class NullType
    {};


    class TypeInfo :
        virtual public wns::IOutputStreamable
    {
    public:
        explicit
        TypeInfo(const std::type_info& type) :
            IOutputStreamable(),
            type_(&type)
        {}

        TypeInfo(const TypeInfo& other) :
            IOutputStreamable(other),
            type_(other.type_)
        {
        }

        TypeInfo&
        operator=(const TypeInfo& other)
        {
            type_ = other.type_;
            return *this;
        }


        // Default d'tor is ok

        bool
        before(const TypeInfo& other) const
        {
            return type_->before(*(other.type_));
        }

        const char*
        name() const
        {
            return type_->name();
        }

        bool
        operator==(const TypeInfo& other) const
        {
            return (*type_ == *(other.type_));
        }

        bool
        operator!=(const TypeInfo& other) const
        {
            return (*type_ != *(other.type_));
        }

        bool
        operator<(const TypeInfo& other) const
        {
            return before(other);
        }

        bool
        operator<=(const TypeInfo& other) const
        {
            return ((*this < other) || (*this == other));
        }

        bool
        operator>(const TypeInfo& other) const
        {
            return !((*this < other) || (*this == other));
        }

        bool
        operator>=(const TypeInfo& other) const
        {
            return !(*this < other);
        }


        template <typename T>
        static TypeInfo
        create()
        {
            return TypeInfo(typeid(T));
        }

        template <typename T>
        static TypeInfo
        create(const T& t)
        {
            return TypeInfo(typeid(t));
        }

    private:
        virtual std::string
        doToString() const
        {
            return wns::demangle(name());
        }

        const std::type_info* type_;

        TypeInfo();
    };
}

#endif // NOT defined WNS_TYPEINFO_HPP

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