/***************************************************************************

	gbc_read_common.h

	(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>

	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, 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.

***************************************************************************/

#ifndef __GBC_READ_COMMON_H
#define __GBC_READ_COMMON_H

typedef
	uint PATTERN;

enum {
	RT_END = 0,
	RT_NEWLINE = 1,
	RT_RESERVED = 2,
	RT_IDENTIFIER = 3,
	RT_NUMBER = 4,
	RT_STRING = 5,
	RT_TSTRING = 6,
	RT_PARAM = 7,
	RT_SUBR = 8,
	RT_CLASS = 9,
	RT_COMMENT = 10, /* Used by Eval() */
	RT_OPERATOR = 11, /* Used by Eval() */
	RT_COMMAND = 12,
	RT_OUTPUT = 0x20,
	RT_POINT = 0x40,
	RT_FIRST = 0x80
	};
	
enum {
	RC_SECTION = 1
	};

#define NULL_PATTERN ((PATTERN)0L)

#define PATTERN_make(type, index) ((PATTERN)((type) | ((index) << 8)))

#define PATTERN_flag(pattern)   ((pattern) & 0xF0)
#define PATTERN_type(pattern)   ((pattern) & 0xF)
#define PATTERN_index(pattern)  ((pattern) >> 8)

#define PATTERN_is(pattern, res) (pattern == PATTERN_make(RT_RESERVED, res))

#define PATTERN_is_null(pattern) (pattern == NULL_PATTERN)

#define PATTERN_is_end(pattern)         (PATTERN_type(pattern) == RT_END)
#define PATTERN_is_reserved(pattern)    (PATTERN_type(pattern) == RT_RESERVED)

#define PATTERN_is_identifier(pattern)  (PATTERN_type(pattern) == RT_IDENTIFIER)
#define PATTERN_is_class(pattern)       (PATTERN_type(pattern) == RT_CLASS)
#define PATTERN_is_newline(pattern)     (PATTERN_type(pattern) == RT_NEWLINE)
#define PATTERN_is_param(pattern)       (PATTERN_type(pattern) == RT_PARAM)
#define PATTERN_is_subr(pattern)        (PATTERN_type(pattern) == RT_SUBR)
#define PATTERN_is_number(pattern)      (PATTERN_type(pattern) == RT_NUMBER)
#define PATTERN_is_string(pattern)      (PATTERN_type(pattern) == RT_STRING)
#define PATTERN_is_tstring(pattern)     (PATTERN_type(pattern) == RT_TSTRING)
#define PATTERN_is_command(pattern)     (PATTERN_type(pattern) == RT_COMMAND)
#define PATTERN_is_comment(pattern)     (PATTERN_type(pattern) == RT_COMMENT)

#define PATTERN_is_newline_end(pattern) (PATTERN_is_newline(pattern) || PATTERN_is_end(pattern))

#define PATTERN_is_first(pattern)       (((pattern) & RT_FIRST) != 0)
#define PATTERN_is_point(pattern)       (((pattern) & RT_POINT) != 0)
#define PATTERN_is_output(pattern)      (((pattern) & RT_OUTPUT) != 0)

#define PATTERN_set_flag(pattern, flag)    ((pattern) | flag)
#define PATTERN_unset_flag(pattern, flag)    ((pattern) & ~flag)

#define PATTERN_is_operand(pattern)   (PATTERN_is_reserved(pattern) && RES_is_operand(PATTERN_index(pattern)))
#define PATTERN_is_type(pattern)      (PATTERN_is_reserved(pattern) && RES_is_type(PATTERN_index(pattern)))

#define VOID_STRING 0xFFFFFF

#endif