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