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[sgk-go] / patterns / dfa.h
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1/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
2 * This is GNU Go, a Go program. Contact gnugo@gnu.org, or see *
3 * http://www.gnu.org/software/gnugo/ for more information. *
4 * *
5 * Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, *
6 * 2008 and 2009 by the Free Software Foundation. *
7 * *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of the GNU General Public License as *
10 * published by the Free Software Foundation - version 3 or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License in file COPYING for more details. *
17 * *
18 * You should have received a copy of the GNU General Public *
19 * License along with this program; if not, write to the Free *
20 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
21 * Boston, MA 02111, USA. *
22\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
23
24#ifndef _DFA_H_
25#define _DFA_H_
26
27#if MAX_BOARD > 11
28#define DFA_MAX_BOARD MAX_BOARD
29#else
30#define DFA_MAX_BOARD 11
31#endif
32#define DFA_MAX_ORDER ((2 * DFA_MAX_BOARD - 1) \
33 * (2 * DFA_MAX_BOARD - 1))
34#define DFA_BASE (3 * DFA_MAX_BOARD)
35#define DFA_POS(i, j) (((i) + DFA_MAX_BOARD) * DFA_BASE \
36 + ((j) + DFA_MAX_BOARD))
37
38#ifndef EMPTY
39#define EMPTY 0 /* . */
40#define WHITE 1 /* O */
41#define BLACK 2 /* X */
42#endif
43#define OUT_BOARD 3 /* # */
44
45
46/* Maximum pattern matched at one positions. */
47#define DFA_MAX_MATCHED (8 * 24)
48
49
50/* DFA spiral order. */
51extern int spiral[DFA_MAX_ORDER][8];
52
53void build_spiral_order(void);
54
55
56/* The run-time data structures declared here are different from those
57 * used internally to build the DFA. */
58
59/* Attribute list. */
60typedef struct attrib_rt
61{
62 short val;
63 short next;
64} attrib_rt_t;
65
66/* DFA state. */
67typedef struct state_rt
68{
69 short next[4];
70 short att;
71} state_rt_t;
72
73typedef struct dfa_rt
74{
75 /* File header. */
76 const char name[80];
77
78 /* Transition graph. */
79 const state_rt_t *states;
80
81 /* Attributes sets. */
82 const attrib_rt_t *indexes;
83} dfa_rt_t;
84
85
86
87#endif /* _DFA_H_ */
88
89
90/*
91 * Local Variables:
92 * tab-width: 8
93 * c-basic-offset: 2
94 * End:
95 */