/*
    Copyright (C) 2012 Bartosz Broda, Jacek Bochenek, Łukasz Biłeńkij, 
    Damian Jaworski, Wojciech Mazur, Dominik Piasecki, Maciej Piasecki, 
    Radosław Ramocki
    
    This program 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 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 LICENSE and COPYING files for more details.
*/

#ifndef LEXICALUNITS_LEXICALUNIT_TYPE_H
#define LEXICALUNITS_LEXICALUNIT_TYPE_H
#include "lex_headers.h"
	
namespace LexicalUnits
{
	/**
	Singelton class acting as an extended enum describing lexical units.
	*/
	class LexicalUnitType
	{
	public:
		enum TYPES{SIMPLE_WORD, FIX, FLEX, FIXGAP, FLEXGAP};

		static std::string ToString(TYPES type);

		static bool IsKnown(TYPES type);

		/**
		\return actual representation of TYPE, in case s is unknown then std::string is thrown.
		\todo Change type of exception thrown.
		*/
		static TYPES FromString(const std::string &s);

	private:
		/// no implementation
		LexicalUnitType();

	};//class LexicalUnitType
}//namespace LexicalUnits

std::ostream&  operator << (std::ostream& out, LexicalUnits::LexicalUnitType::TYPES type);

#endif //LEXICALUNITS_LEXICALUNIT_TYPE_H

