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