1 %{ 2 /* $NetBSD: tokenizer.l,v 1.6 2012/03/20 20:34:58 matt Exp $ */ 3 /* $OpenBSD: tokenizer.l,v 1.6 2008/08/21 21:00:14 espie Exp $ */ 4 /* 5 * Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 #if HAVE_NBTOOL_CONFIG_H 20 #include "nbtool_config.h" 21 #endif 22 #include "parser.h" 23 __RCSID("$NetBSD: tokenizer.l,v 1.6 2012/03/20 20:34:58 matt Exp $"); 24 #include <stdlib.h> 25 #include <errno.h> 26 #include <stdint.h> 27 #include <limits.h> 28 29 extern int mimic_gnu; 30 extern int32_t yylval; 31 extern int yylex(void); 32 extern int yywrap(void); 33 34 int32_t number(void); 35 int32_t parse_radix(void); 36 37 %} 38 39 %option nounput 40 %option noinput 41 42 delim [ \t\n] 43 ws {delim}+ 44 hex 0[xX][0-9a-fA-F]+ 45 oct 0[0-7]* 46 dec [1-9][0-9]* 47 radix 0[rR][0-9]+:[0-9a-zA-Z]+ 48 49 %% 50 {ws} {/* just skip it */} 51 {hex}|{oct}|{dec} { yylval = number(); return(NUMBER); } 52 {radix} { if (mimic_gnu) { 53 yylval = parse_radix(); return(NUMBER); 54 } else { 55 return(ERROR); 56 } 57 } 58 "<=" { return(LE); } 59 ">=" { return(GE); } 60 "<<" { return(LSHIFT); } 61 ">>" { return(RSHIFT); } 62 "==" { return(EQ); } 63 "!=" { return(NE); } 64 "&&" { return(LAND); } 65 "||" { return(LOR); } 66 . { return yytext[0]; } 67 %% 68 69 int32_t 70 number(void) 71 { 72 long l; 73 74 errno = 0; 75 l = strtol(yytext, NULL, 0); 76 if (((l == LONG_MAX || l == LONG_MIN) && errno == ERANGE) || 77 l > INT32_MAX || l < INT32_MIN) { 78 fprintf(stderr, "m4: numeric overflow in expr: %s\n", yytext); 79 } 80 return l; 81 } 82 83 int32_t 84 parse_radix(void) 85 { 86 long base; 87 char *next; 88 long l; 89 90 l = 0; 91 base = strtol(yytext+2, &next, 0); 92 if (base > 36 || next == NULL) { 93 fprintf(stderr, "m4: error in number %s\n", yytext); 94 } else { 95 next++; 96 while (*next != 0) { 97 if (*next >= '0' && *next <= '9') 98 l = base * l + *next - '0'; 99 else if (*next >= 'a' && *next <= 'z') 100 l = base * l + *next - 'a' + 10; 101 else if (*next >= 'A' && *next <= 'Z') 102 l = base * l + *next - 'A' + 10; 103 next++; 104 } 105 } 106 return l; 107 } 108 109