aboutsummaryrefslogtreecommitdiff
path: root/engines/glk/alan2/rules.cpp
blob: d00d1f39551c569d1f2a26425dd7fb8541762f70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
/* 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 "glk/alan2/types.h"
#include "glk/alan2/main.h"
#include "glk/alan2/inter.h"
#include "glk/alan2/debug.h"
#include "glk/alan2/exe.h"
#include "glk/alan2/stack.h"

#include "glk/alan2/rules.h"

#ifdef GLK
#include "glk/alan2/glkio.h"
#endif

namespace Glk {
namespace Alan2 {

#ifdef _PROTOTYPES_
void rules(void)
#else
void rules()
#endif
{
  Boolean change = TRUE;
  int i;
  
  for (i = 1; !endOfTable(&ruls[i-1]); i++)
    ruls[i-1].run = FALSE;
  
  while (change) {
    change = FALSE;
    for (i = 1; !endOfTable(&ruls[i-1]); i++) 
      if (!ruls[i-1].run) {
	if (trcflg) {
	  printf("\n<RULE %d (at ", i);
	  debugsay(cur.loc);
	  if (!stpflg)
	    printf("), Evaluating");
	  else
	    printf("), Evaluating:>\n");
	}
	interpret(ruls[i-1].exp);
	if (pop()) {
	  change = TRUE;
	  ruls[i-1].run = TRUE;
	  if (trcflg)
	    if (!stpflg)
	      printf(", Executing:>\n");
	    else {
	      printf("\nRULE %d (at ", i);
	      debugsay(cur.loc);
	      printf("), Executing:>\n");
	    }
	  interpret(ruls[i-1].stms);
	} else if (trcflg && !stpflg)
	  printf(":>\n");
      }
  }
}

} // End of namespace Alan2
} // End of namespace Glk