/*************************************************************************
** PSFilter.hpp                                                         **
**                                                                      **
** This file is part of dvisvgm -- a fast DVI to SVG converter          **
** Copyright (C) 2005-2018 Martin Gieseking <martin.gieseking@uos.de>   **
**                                                                      **
** 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 3 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/

#ifndef PSFILTER_HPP
#define PSFILTER_HPP

class PSInterpreter;

class PSFilter
{
	public:
		explicit PSFilter (PSInterpreter &psi) : _psi(psi) {}
		virtual ~PSFilter () =default;
		virtual void execute (const char *code, size_t len) =0;
		virtual bool active () const =0;

	protected:
		PSInterpreter& psInterpreter () {return _psi;}

	private:
		PSInterpreter &_psi;
};

#endif
