1/*	$NetBSD: syntax.h,v 1.2 2004/01/17 17:38:12 dsl Exp $	*/
2
3/*-
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Kenneth Almquist.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#include <ctype.h>
37
38/* Syntax classes */
39#define CWORD 0			/* character is nothing special */
40#define CNL 1			/* newline character */
41#define CBACK 2			/* a backslash character */
42#define CSQUOTE 3		/* single quote */
43#define CDQUOTE 4		/* double quote */
44#define CBQUOTE 5		/* backwards single quote */
45#define CVAR 6			/* a dollar sign */
46#define CENDVAR 7		/* a '}' character */
47#define CLP 8			/* a left paren in arithmetic */
48#define CRP 9			/* a right paren in arithmetic */
49#define CEOF 10			/* end of file */
50#define CCTL 11			/* like CWORD, except it must be escaped */
51#define CSPCL 12		/* these terminate a word */
52
53/* Syntax classes for is_ functions */
54#define ISDIGIT 01		/* a digit */
55#define ISUPPER 02		/* an upper case letter */
56#define ISLOWER 04		/* a lower case letter */
57#define ISUNDER 010		/* an underscore */
58#define ISSPECL 020		/* the name of a special parameter */
59
60#define PEOF (CHAR_MIN - 1)
61#define SYNBASE (-PEOF)
62/* XXX UPEOF is CHAR_MAX, so is a valid 'char' value... */
63#define UPEOF ((char)PEOF)
64
65
66#define BASESYNTAX (basesyntax + SYNBASE)
67#define DQSYNTAX (dqsyntax + SYNBASE)
68#define SQSYNTAX (sqsyntax + SYNBASE)
69#define ARISYNTAX (arisyntax + SYNBASE)
70
71/* These defines assume that the digits are contiguous */
72#define is_digit(c)	((unsigned)((c) - '0') <= 9)
73#define is_alpha(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && isalpha((unsigned char)(c)))
74#define is_name(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalpha((unsigned char)(c))))
75#define is_in_name(c)	(((char)(c)) != UPEOF && ((c) < CTL_FIRST || (c) > CTL_LAST) && ((c) == '_' || isalnum((unsigned char)(c))))
76#define is_special(c)	((is_type+SYNBASE)[c] & (ISSPECL|ISDIGIT))
77#define digit_val(c)	((c) - '0')
78
79extern const char basesyntax[];
80extern const char dqsyntax[];
81extern const char sqsyntax[];
82extern const char arisyntax[];
83extern const char is_type[];
84