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Exception.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
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 * 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
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#ifndef WNS_EXCEPTION_HPP
#define WNS_EXCEPTION_HPP

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

#include <sstream>
#include <exception>

namespace wns {
    class Exception :
        virtual public wns::IOutputStreamable,
        virtual public std::exception
    {
    public:
        Exception();

        explicit
        Exception(const std::string& s);

        // Default c'tor is ok

        virtual
        ~Exception() throw();

        virtual const char*
        what() const throw();

        const Backtrace&
        getBacktrace() const;

        template <typename T>
        friend Exception&
        operator <<(Exception& e, const T& t)
        {
            std::stringstream ss;
            ss << t;
            e.reason_.append(ss.str());
            return e;
        }

    protected:
        virtual std::string
        doToString() const;

    private:
        std::string reason_;

        Backtrace backtrace_;
    };
}
#endif  // NOT defined WNS_EXCEPTION_HPP

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