#ifndef __EXEC_TRAIL_HPP__
#define __EXEC_TRAIL_HPP__

/* "Species" - a CoreWars evolver.  Copyright (C) 2004 'Varfar' 
 *
 * 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 1, 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.,
 * 675 Mass Ave, Cambridge, MA 02139, USA. 
 */
 
#include "exhaust.hpp"

#include <string>
 
class COpcodeMap {
	public:
		COpcodeMap();
		unsigned opmap(field_t field) const;
		unsigned segments() const { return 10; } // arb
		unsigned optypes() const { return MAX_OPTYPES; }
		unsigned segsize() const { return 80000/segments(); }
	private:
		enum OPTYPE {
			SPLIT,
			MOVI,
			MATH,
			BRANCH,
			OTHER,
			MAX_OPTYPES
		} _opmap[MAX_OPCODES];
		void mapop(OPCODE op,OPTYPE type);
		void mapop(OPCODE op,MODIFIER mod,OPTYPE type);
		void makeopmap();
};

class CExecTrail {
	public:
		typedef unsigned long long dist_t;
		CExecTrail(COpcodeMap *map);
		~CExecTrail();
		void clear();
		bool load_from_file(const char *filename); // returns success
		std::string filename() const { return _filename; }
		void set(unsigned const segment,dist_t table[MAX_OPCODES]); // table[SEGMENTS][MAX_OPCODES]
		dist_t distance_squared(CExecTrail const *other) const;
		dist_t max_distance_from() const;
	private:
		std::string _filename;
		static const dist_t ZERO = 0ull;
		static const dist_t BLOODY_MASSIVE = 0xFFFFFFFFFFFFFFFFull;
		COpcodeMap *_map;
		dist_t **_exec_count;
};
 
#endif // __EXEC_TRAIL_HPP__