1/*
2 * Header file for dc routines
3 *
4 * Copyright (C) 1994, 1997, 1998 Free Software Foundation, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, you can either send email to this
18 * program's author (see below) or write to:
19 *
20 *    The Free Software Foundation, Inc.
21 *    59 Temple Place, Suite 330
22 *    Boston, MA 02111 USA
23 */
24
25#ifndef DC_DEFS_H
26#define DC_DEFS_H
27
28/* 'I' is a command, and bases 17 and 18 are quite
29 * unusual, so we limit ourselves to bases 2 to 16
30 */
31#define DC_IBASE_MAX	16
32
33#define DC_SUCCESS		0
34#define DC_DOMAIN_ERROR	1
35#define DC_FAIL			2	/* generic failure */
36
37
38#ifndef __STDC__
39# define DC_PROTO(x)			()
40# define DC_DECLVOID()			()
41# define DC_DECLARG(arglist)	arglist
42# define DC_DECLSEP				;
43# define DC_DECLEND				;
44#else /* __STDC__ */
45# define DC_PROTO(x)			x
46# define DC_DECLVOID()			(void)
47# define DC_DECLARG(arglist)	(
48# define DC_DECLSEP				,
49# define DC_DECLEND				)
50#endif /* __STDC__ */
51
52
53typedef enum {DC_TOSS, DC_KEEP}   dc_discard;
54typedef enum {DC_NONL, DC_WITHNL} dc_newline;
55
56
57/* type discriminant for dc_data */
58typedef enum {DC_UNINITIALIZED, DC_NUMBER, DC_STRING} dc_value_type;
59
60/* only numeric.c knows what dc_num's *really* look like */
61typedef struct dc_number *dc_num;
62
63/* only string.c knows what dc_str's *really* look like */
64typedef struct dc_string *dc_str;
65
66
67/* except for the two implementation-specific modules, all
68 * dc functions only know of this one generic type of object
69 */
70typedef struct {
71	dc_value_type dc_type;	/* discriminant for union */
72	union {
73		dc_num number;
74		dc_str string;
75	} v;
76} dc_data;
77
78
79/* This is dc's only global variable: */
80extern const char *progname;	/* basename of program invocation */
81
82#endif /* not DC_DEFS_H */
83