1 %{ 2 /* 3 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan 4 * (Royal Institute of Technology, Stockholm, Sweden). 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 /* $Id: lex.l,v 1.16 2001/04/18 13:08:47 joda Exp $ */ 36 37 #ifdef HAVE_CONFIG_H 38 #include <config.h> 39 #endif 40 #include <stdio.h> 41 #include <stdarg.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #ifdef HAVE_UNISTD_H 45 #include <unistd.h> 46 #endif 47 #include "symbol.h" 48 #include "parse.h" 49 #include "lex.h" 50 #include "gen_locl.h" 51 52 static unsigned lineno = 1; 53 54 #define YY_NO_UNPUT 55 56 #undef ECHO 57 58 %} 59 60 61 %% 62 INTEGER { return INTEGER; } 63 IMPORTS { return IMPORTS; } 64 FROM { return FROM; } 65 SEQUENCE { return SEQUENCE; } 66 OF { return OF; } 67 OCTET { return OCTET; } 68 STRING { return STRING; } 69 GeneralizedTime { return GeneralizedTime; } 70 GeneralString { return GeneralString; } 71 BIT { return BIT; } 72 APPLICATION { return APPLICATION; } 73 OPTIONAL { return OPTIONAL; } 74 BEGIN { return TBEGIN; } 75 END { return END; } 76 DEFINITIONS { return DEFINITIONS; } 77 EXTERNAL { return EXTERNAL; } 78 [,;{}()|] { return *yytext; } 79 "[" { return *yytext; } 80 "]" { return *yytext; } 81 ::= { return EEQUAL; } 82 --[^\n]*\n { ++lineno; } 83 -?(0x)?[0-9]+ { char *e; yylval.constant = strtol(yytext, &e, 0); 84 if(e == yytext) 85 error_message("malformed constant (%s)", yytext); 86 else return CONSTANT; } 87 [A-Za-z][-A-Za-z0-9_]* { yylval.name = strdup (yytext); return IDENTIFIER; } 88 [ \t] ; 89 \n { ++lineno; } 90 \.\. { return DOTDOT; } 91 . { error_message("Ignoring char(%c)\n", *yytext); } 92 %% 93 94 #ifndef yywrap /* XXX */ 95 int 96 yywrap () 97 { 98 return 1; 99 } 100 #endif 101 102 void 103 error_message (const char *format, ...) 104 { 105 va_list args; 106 107 va_start (args, format); 108 fprintf (stderr, "%s:%d: ", filename(), lineno); 109 vfprintf (stderr, format, args); 110 va_end (args); 111 } 112