1 /* $FreeBSD$ */ 2 /* $NetBSD: lex.l,v 1.3 2006/02/09 22:03:15 dogcow Exp $ */ 3 4 %{ 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause 7 * 8 * Copyright (c)2003 Citrus Project, 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #include <sys/endian.h> 35 #include <sys/queue.h> 36 #include <sys/types.h> 37 38 #include <assert.h> 39 #include <errno.h> 40 #include <limits.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 45 #include "ldef.h" 46 #include "yacc.h" 47 48 #define YY_DECL int yylex(void) 49 50 int linenumber = 1; 51 %} 52 %option noinput 53 %option nounput 54 55 %x COMMENT 56 57 %% 58 59 [ \t]+ { } 60 #.*[\n]|"//".*[\n]|[\n] { linenumber++; return (R_LN); } 61 62 "/*" { BEGIN COMMENT; } 63 <COMMENT>"*/" { BEGIN 0; } 64 <COMMENT>[\n] { linenumber++; } 65 <COMMENT>. { } 66 <COMMENT><<EOF>> { 67 yyerror("unexpected file end (unterminated comment)\n"); 68 exit(1); 69 } 70 71 ([1-9][0-9]*)|(0[0-9]*)|(0[xX][0-9A-Fa-f]+) { 72 yylval.i_value = strtoul(yytext, NULL, 0); 73 return (L_IMM); 74 } 75 76 "NAME" { return (R_NAME); } 77 "ENCODING" { return (R_ENCODING); } 78 "VARIABLE" { return (R_VARIABLE); } 79 "DEFCSID" { return (R_DEFCSID); } 80 "INVALID" { return (R_INVALID); } 81 82 \"([^\"\n]*(\\\")?)*\"|\'([^\'\n]*(\\\')?)*\' { 83 size_t len; 84 85 len = strlen(yytext); 86 yylval.s_value = malloc(len - 1); 87 strlcpy(yylval.s_value, yytext + 1, len - 1); 88 return (L_STRING); 89 } 90 [^ =/\-0-9\t\n][^ \t\n]* { 91 yylval.s_value = strdup(yytext); 92 return (L_STRING); 93 } 94 95 %% 96 97 #ifndef yywrap 98 int 99 yywrap(void) 100 { 101 102 return (1); 103 } 104 #endif 105