1 %{ 2 /* 3 * Copyright (c) 1998 - 2000 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 /* $FreeBSD$ */ 35 36 #include "compile_et.h" 37 #include "lex.h" 38 #if 0 39 RCSID("$Id: parse.y 15426 2005-06-16 19:21:42Z lha $"); 40 #endif 41 42 void yyerror (char *s); 43 static long name2number(const char *str); 44 45 extern char *yytext; 46 47 /* This is for bison */ 48 49 #if !defined(alloca) && !defined(HAVE_ALLOCA) 50 #define alloca(x) malloc(x) 51 #endif 52 53 %} 54 55 %union { 56 char *string; 57 int number; 58 } 59 60 %token ET INDEX PREFIX EC ID END 61 %token <string> STRING 62 %token <number> NUMBER 63 64 %% 65 66 file : /* */ 67 | header statements 68 ; 69 70 header : id et 71 | et 72 ; 73 74 id : ID STRING 75 { 76 id_str = $2; 77 } 78 ; 79 80 et : ET STRING 81 { 82 base_id = name2number($2); 83 strlcpy(name, $2, sizeof(name)); 84 free($2); 85 } 86 | ET STRING STRING 87 { 88 base_id = name2number($2); 89 strlcpy(name, $3, sizeof(name)); 90 free($2); 91 free($3); 92 } 93 ; 94 95 statements : statement 96 | statements statement 97 ; 98 99 statement : INDEX NUMBER 100 { 101 number = $2; 102 } 103 | PREFIX STRING 104 { 105 free(prefix); 106 asprintf (&prefix, "%s_", $2); 107 if (prefix == NULL) 108 errx(1, "malloc"); 109 free($2); 110 } 111 | PREFIX 112 { 113 prefix = realloc(prefix, 1); 114 if (prefix == NULL) 115 errx(1, "malloc"); 116 *prefix = '\0'; 117 } 118 | EC STRING ',' STRING 119 { 120 struct error_code *ec = malloc(sizeof(*ec)); 121 122 if (ec == NULL) 123 errx(1, "malloc"); 124 125 ec->next = NULL; 126 ec->number = number; 127 if(prefix && *prefix != '\0') { 128 asprintf (&ec->name, "%s%s", prefix, $2); 129 if (ec->name == NULL) 130 errx(1, "malloc"); 131 free($2); 132 } else 133 ec->name = $2; 134 ec->string = $4; 135 APPEND(codes, ec); 136 number++; 137 } 138 | END 139 { 140 YYACCEPT; 141 } 142 ; 143 144 %% 145 146 static long 147 name2number(const char *str) 148 { 149 const char *p; 150 long num = 0; 151 const char *x = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" 152 "abcdefghijklmnopqrstuvwxyz0123456789_"; 153 if(strlen(str) > 4) { 154 yyerror("table name too long"); 155 return 0; 156 } 157 for(p = str; *p; p++){ 158 char *q = strchr(x, *p); 159 if(q == NULL) { 160 yyerror("invalid character in table name"); 161 return 0; 162 } 163 num = (num << 6) + (q - x) + 1; 164 } 165 num <<= 8; 166 if(num > 0x7fffffff) 167 num = -(0xffffffff - num + 1); 168 return num; 169 } 170 171 void 172 yyerror (char *s) 173 { 174 error_message ("%s\n", s); 175 } 176