| 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 <ctype.h>
|
|---|
| 36 | #include <limits.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 CSHEOF 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 |
|
|---|
| 79 | #ifdef _MSC_VER
|
|---|
| 80 | extern char basesyntax[];
|
|---|
| 81 | extern char dqsyntax[];
|
|---|
| 82 | extern char sqsyntax[];
|
|---|
| 83 | extern char arisyntax[];
|
|---|
| 84 | extern char is_type[];
|
|---|
| 85 | #else
|
|---|
| 86 | extern const char basesyntax[];
|
|---|
| 87 | extern const char dqsyntax[];
|
|---|
| 88 | extern const char sqsyntax[];
|
|---|
| 89 | extern const char arisyntax[];
|
|---|
| 90 | extern const char is_type[];
|
|---|
| 91 | #endif
|
|---|
