exception.hxx

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/*
 *   xyzzy
 *   Copyright (C) 2007    Karl W. Pfalzer
 *
 *   This program 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 2
 *   of the License, or (at your option) any later version.
 *
 *   This program 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 this program; if not, write to the
 *   Free Software Foundation, Inc.
 *   51 Franklin Street, Fifth Floor
 *   Boston, MA  02110-1301, USA.
 */

#if !defined(_xyzzy_exception_hxx_)
#    define  _xyzzy_exception_hxx_

namespace xyzzy
{
    class TException;

    class TException
    {
    public:
        explicit TException()
        :   m_reason(stNoReason)
        {}

        explicit TException(const char* reason)
        :   m_reason(reason)
        {}
        
        const char* getReason() const
        {
            return m_reason;
        }
        
        void print() const;

        virtual ~TException();

    protected:
        const char* m_reason;
        
    private:
        static const char* const stNoReason;
    };

    void invariant(bool cond) throw(TException);

    class TNullPointerException : public TException
    {
    public:
        explicit TNullPointerException();
    };

    class TDynamicCastException : public TException
    {
    public:
        explicit TDynamicCastException();
    };
};

#endif  //_xyzzy_exception_hxx_

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