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 1.19 2001/09/25 23:28:03 assar 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 #undef ECHO 48 #include "symbol.h" 49 #include "parse.h" 50 #include "lex.h" 51 #include "gen_locl.h" 52 53 static unsigned lineno = 1; 54 55 #define YY_NO_UNPUT 56 57 #undef ECHO 58 59 %} 60 61 62 %% 63 INTEGER { return INTEGER; } 64 IMPORTS { return IMPORTS; } 65 FROM { return FROM; } 66 SEQUENCE { return SEQUENCE; } 67 OF { return OF; } 68 OCTET { return OCTET; } 69 STRING { return STRING; } 70 GeneralizedTime { return GeneralizedTime; } 71 GeneralString { return GeneralString; } 72 BIT { return BIT; } 73 APPLICATION { return APPLICATION; } 74 OPTIONAL { return OPTIONAL; } 75 BEGIN { return TBEGIN; } 76 END { return END; } 77 DEFINITIONS { return DEFINITIONS; } 78 ENUMERATED { return ENUMERATED; } 79 EXTERNAL { return EXTERNAL; } 80 OBJECT { return OBJECT; } 81 IDENTIFIER { return IDENTIFIER; } 82 [,;{}()|] { return *yytext; } 83 "[" { return *yytext; } 84 "]" { return *yytext; } 85 ::= { return EEQUAL; } 86 --[^\n]*\n { ++lineno; } 87 -?(0x)?[0-9]+ { char *e, *y = yytext; 88 yylval.constant = strtol((const char *)yytext, 89 &e, 0); 90 if(e == y) 91 error_message("malformed constant (%s)", yytext); 92 else 93 return CONSTANT; 94 } 95 [A-Za-z][-A-Za-z0-9_]* { 96 yylval.name = strdup ((const char *)yytext); 97 return IDENT; 98 } 99 [ \t] ; 100 \n { ++lineno; } 101 \.\. { return DOTDOT; } 102 . { error_message("Ignoring char(%c)\n", *yytext); } 103 %% 104 105 #ifndef yywrap /* XXX */ 106 int 107 yywrap () 108 { 109 return 1; 110 } 111 #endif 112 113 void 114 error_message (const char *format, ...) 115 { 116 va_list args; 117 118 va_start (args, format); 119 fprintf (stderr, "%s:%d: ", filename(), lineno); 120 vfprintf (stderr, format, args); 121 va_end (args); 122 } 123