mapnik/include/mapnik/value_error.hpp

57 lines
1.5 KiB
C++

/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef MAPNIK_VALUE_ERROR_HPP
#define MAPNIK_VALUE_ERROR_HPP
#include <iostream>
#include <sstream>
namespace mapnik {
class value_error : public std::exception
{
public:
value_error() {}
value_error( const std::string & what ) :
what_( what )
{
}
virtual ~value_error() throw() {};
virtual const char * what() const throw()
{
return what_.c_str();
}
void append_context(const std::string & ctx) const
{
what_ += " " + ctx;
}
protected:
mutable std::string what_;
};
}
#endif // MAPNIK_VALUE_ERROR_HPP