config/mkdepend/ifparser.h

/*
 * $Xorg: ifparser.h,v 1.3 2000/08/17 19:41:51 cpqbld Exp $
 *
 * Copyright 1992 Network Computing Devices, Inc.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Network Computing Devices may not be
 * used in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  Network Computing Devices makes
 * no representations about the suitability of this software for any purpose.
 * It is provided ``as is'' without express or implied warranty.
 * 
 * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
 * IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 * 
 * Author:  Jim Fulton
 *          Network Computing Devices, Inc.
 * 
 * Simple if statement processor
 *
 * This module can be used to evaluate string representations of C language
 * if constructs.  It accepts the following grammar:
 * 
 *     EXPRESSION       :=      VALUE
 *                       |      VALUE  BINOP    EXPRESSION
 *                       |      VALUE   '?'     EXPRESSION ':'  EXPRESSION
 * 
 *     VALUE            :=      '('  EXPRESSION  ')'
 *                       |      '!'  VALUE
 *                       |      '-'  VALUE
 *                       |      '~'  VALUE
 *                       |      'defined'  '('  variable  ')'
 *                       |      variable
 *                       |      number
 * 
 *     BINOP            :=      '*'     |  '/'  |  '%'
 *                       |      '+'     |  '-'
 *                       |      '<<'    |  '>>'
 *                       |      '<'     |  '>'  |  '<='  |  '>='
 *                       |      '=='    |  '!='
 *                       |      '&'     |  '^'  |  '|'
 *                       |      '&&'    |  '||'
 * 
 * The normal C order of precedence is supported.
 * 
 * 
 * External Entry Points:
 * 
 *     ParseIfExpression                parse a string for #if
 */

/* $XFree86: xc/config/makedepend/ifparser.h,v 3.5 2001/07/25 15:04:40 dawes Exp $ */

#include <stdio.h>

typedef int Bool;
#define False 0
#define True 1

typedef struct _if_parser {
    struct {                            /* functions */
        const char *(*handle_error) (struct _if_parser *, const char *,
                                     const char *);
        long (*eval_variable) (struct _if_parser *, const char *, int);
        int (*eval_defined) (struct _if_parser *, const char *, int);
    } funcs;
    char *data;
} IfParser;

const char *ParseIfExpression (
    IfParser *, 
    const char *, 
    long *
);

1	/*
2	* $Xorg: ifparser.h,v 1.3 2000/08/17 19:41:51 cpqbld Exp $
3	*
4	* Copyright 1992 Network Computing Devices, Inc.
5	*
6	* Permission to use, copy, modify, and distribute this software and its
7	* documentation for any purpose and without fee is hereby granted, provided
8	* that the above copyright notice appear in all copies and that both that
9	* copyright notice and this permission notice appear in supporting
10	* documentation, and that the name of Network Computing Devices may not be
11	* used in advertising or publicity pertaining to distribution of the software
12	* without specific, written prior permission. Network Computing Devices makes
13	* no representations about the suitability of this software for any purpose.
14	* It is provided ``as is'' without express or implied warranty.
15	*
16	* NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
17	* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
18	* IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
19	* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
20	* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
21	* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
22	* PERFORMANCE OF THIS SOFTWARE.
23	*
24	* Author: Jim Fulton
25	* Network Computing Devices, Inc.
26	*
27	* Simple if statement processor
28	*
29	* This module can be used to evaluate string representations of C language
30	* if constructs. It accepts the following grammar:
31	*
32	* EXPRESSION := VALUE
33	* \| VALUE BINOP EXPRESSION
34	* \| VALUE '?' EXPRESSION ':' EXPRESSION
35	*
36	* VALUE := '(' EXPRESSION ')'
37	* \| '!' VALUE
38	* \| '-' VALUE
39	* \| '~' VALUE
40	* \| 'defined' '(' variable ')'
41	* \| variable
42	* \| number
43	*
44	* BINOP := '*' \| '/' \| '%'
45	* \| '+' \| '-'
46	* \| '<<' \| '>>'
47	* \| '<' \| '>' \| '<=' \| '>='
48	* \| '==' \| '!='
49	* \| '&' \| '^' \| '\|'
50	* \| '&&' \| '\|\|'
51	*
52	* The normal C order of precedence is supported.
53	*
54	*
55	* External Entry Points:
56	*
57	* ParseIfExpression parse a string for #if
58	*/
59
60	/* $XFree86: xc/config/makedepend/ifparser.h,v 3.5 2001/07/25 15:04:40 dawes Exp $ */
61
62	#include <stdio.h>
63
64	typedef int Bool;
65	#define False 0
66	#define True 1
67
68	typedef struct _if_parser {
69	struct { /* functions */
70	const char (handle_error) (struct _if_parser , const char ,
71	const char *);
72	long (eval_variable) (struct _if_parser , const char *, int);
73	int (eval_defined) (struct _if_parser , const char *, int);
74	} funcs;
75	char *data;
76	} IfParser;
77
78	const char *ParseIfExpression (
79	IfParser *,
80	const char *,
81	long *
82	);
83