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 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#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 CFPREFIX EC ID END 60%token <string> STRING 61%token <number> NUMBER 62 63%% 64 65file : /* */ 66 | header statements 67 ; 68 69header : id et 70 | et 71 ; 72 73id : ID STRING 74 { 75 id_str = $2; 76 } 77 ; 78 79et : 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 94statements : statement 95 | statements statement 96 ; 97 98statement : INDEX NUMBER 99 { 100 number = $2; 101 } 102 | CFPREFIX STRING 103 { 104 prefix = $2; 105 } 106 | PREFIX STRING 107 { 108 free(prefix); 109 asprintf (&prefix, "%s_", $2); 110 if (prefix == NULL) 111 errx(1, "malloc"); 112 free($2); 113 } 114 | PREFIX 115 { 116 prefix = realloc(prefix, 1); 117 if (prefix == NULL) 118 errx(1, "malloc"); 119 *prefix = '\0'; 120 } 121 | EC STRING ',' STRING 122 { 123 struct error_code *ec = malloc(sizeof(*ec)); 124 125 if (ec == NULL) 126 errx(1, "malloc"); 127 128 ec->next = NULL; 129 ec->number = number; 130 if(prefix && *prefix != '\0') { 131 asprintf (&ec->name, "%s%s", prefix, $2); 132 if (ec->name == NULL) 133 errx(1, "malloc"); 134 free($2); 135 } else 136 ec->name = $2; 137 ec->string = $4; 138 APPEND(codes, ec); 139 number++; 140 } 141 | END 142 { 143 YYACCEPT; 144 } 145 ; 146 147%% 148 149static long 150name2number(const char *str) 151{ 152 const char *p; 153 long num = 0; 154 const char *x = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" 155 "abcdefghijklmnopqrstuvwxyz0123456789_"; 156 if(strlen(str) > 4) { 157 yyerror("table name too long"); 158 return 0; 159 } 160 for(p = str; *p; p++){ 161 char *q = strchr(x, *p); 162 if(q == NULL) { 163 yyerror("invalid character in table name"); 164 return 0; 165 } 166 num = (num << 6) + (q - x) + 1; 167 } 168 num <<= 8; 169 if(num > 0x7fffffff) 170 num = -(0xffffffff - num + 1); 171 return num; 172} 173 174void 175yyerror (char *s) 176{ 177 _lex_error_message ("%s\n", s); 178} 179