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