/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.
 *
 */

#include "engines/glk/tads/tads2/data.h"
#include "engines/glk/tads/tads2/types.h"
#include "engines/glk/tads/tads2/vocabulary.h"
#include "common/algorithm.h"

namespace Glk {
namespace TADS {
namespace TADS2 {

Data::Data(DataType type) : _type(type) {
}

size_t Data::size() const {
	switch (_type) {
	case DAT_NUMBER:
		return 4;		// numbers are in 4-byte lsb-first format

	case DAT_OBJECT:
		return 2;      // object numbers are in 2-byte lsb-first format

	case DAT_SSTRING:
	case DAT_DSTRING:
	case DAT_LIST:
		return osrp2(_ptr);

	case DAT_NIL:
	case DAT_TRUE:
		return 0;

	case DAT_PROPNUM:
	case DAT_SYN:
	case DAT_FNADDR:
	case DAT_REDIR:
		return 2;

	case DAT_TPL:
		// template is counted array of 10-byte entries, plus length byte */
		return 1 + ((*(uchar *)_ptr) * VOCTPLSIZ);

	case DAT_TPL2:
		return 1 + ((*(uchar *)_ptr) * VOCTPL2SIZ);

	default:
		return 0;
	}
}

} // End of namespace TADS2
} // End of namespace TADS
} // End of namespace Glk