| The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 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 | |
| 79 | extern const char basesyntax[]; |
| 80 | extern const char dqsyntax[]; |
| 81 | extern const char sqsyntax[]; |
| 82 | extern const char arisyntax[]; |
| 83 | extern const char is_type[]; |