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