1 /* $NetBSD: lex.l,v 1.3 2006/02/09 22:03:15 dogcow Exp $ */ 2 3 %{ 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause 6 * 7 * Copyright (c)2003 Citrus Project, 8 * All rights reserved. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/endian.h> 34 #include <sys/queue.h> 35 #include <sys/types.h> 36 37 #include <assert.h> 38 #include <errno.h> 39 #include <limits.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include "ldef.h" 45 #include "yacc.h" 46 47 #define YY_DECL int yylex(void) 48 49 int linenumber = 1; 50 %} 51 %option noinput 52 %option nounput 53 54 %x COMMENT 55 56 %% 57 58 [ \t]+ { } 59 #.*[\n]|"//".*[\n]|[\n] { linenumber++; return (R_LN); } 60 61 "/*" { BEGIN COMMENT; } 62 <COMMENT>"*/" { BEGIN 0; } 63 <COMMENT>[\n] { linenumber++; } 64 <COMMENT>. { } 65 <COMMENT><<EOF>> { 66 yyerror("unexpected file end (unterminated comment)\n"); 67 exit(1); 68 } 69 70 ([1-9][0-9]*)|(0[0-9]*)|(0[xX][0-9A-Fa-f]+) { 71 yylval.i_value = strtoul(yytext, NULL, 0); 72 return (L_IMM); 73 } 74 75 "NAME" { return (R_NAME); } 76 "ENCODING" { return (R_ENCODING); } 77 "VARIABLE" { return (R_VARIABLE); } 78 "DEFCSID" { return (R_DEFCSID); } 79 "INVALID" { return (R_INVALID); } 80 81 \"([^\"\n]*(\\\")?)*\"|\'([^\'\n]*(\\\')?)*\' { 82 size_t len; 83 84 len = strlen(yytext); 85 yylval.s_value = malloc(len - 1); 86 strlcpy(yylval.s_value, yytext + 1, len - 1); 87 return (L_STRING); 88 } 89 [^ =/\-0-9\t\n][^ \t\n]* { 90 yylval.s_value = strdup(yytext); 91 return (L_STRING); 92 } 93 94 %% 95 96 #ifndef yywrap 97 int 98 yywrap(void) 99 { 100 101 return (1); 102 } 103 #endif 104