Annotation of src/usr.bin/compile_et/error_table.y, Revision 1.3
1.1 downsj 1: %{
1.3 ! hin 2: /*
! 3: * Copyright (c) 1998, 1999 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. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by Kungliga Tekniska
! 21: * Högskolan and its contributors.
! 22: *
! 23: * 4. Neither the name of the Institute nor the names of its contributors
! 24: * may be used to endorse or promote products derived from this software
! 25: * without specific prior written permission.
1.1 downsj 26: *
1.3 ! hin 27: * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
! 28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 30: * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
! 31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 37: * SUCH DAMAGE.
1.1 downsj 38: */
39:
1.3 ! hin 40: #include "compile_et.h"
! 41: /* RCSID("$KTH: parse.y,v 1.9 1999/07/04 14:54:58 assar Exp $"); */
1.1 downsj 42:
1.3 ! hin 43: void yyerror (char *s);
! 44: long name2number(const char *str);
! 45: void error_message(char *, ...);
1.1 downsj 46:
1.3 ! hin 47: extern char *yytext;
1.1 downsj 48:
1.3 ! hin 49: /* This is for bison */
1.1 downsj 50:
1.3 ! hin 51: #if !defined(alloca) && !defined(HAVE_ALLOCA)
! 52: #define alloca(x) malloc(x)
1.1 downsj 53: #endif
54:
1.3 ! hin 55: %}
1.1 downsj 56:
1.3 ! hin 57: %union {
! 58: char *string;
! 59: int number;
1.1 downsj 60: }
61:
1.3 ! hin 62: %token ET INDEX PREFIX EC ID END
! 63: %token <string> STRING
! 64: %token <number> NUMBER
1.1 downsj 65:
1.3 ! hin 66: %%
1.1 downsj 67:
1.3 ! hin 68: file : /* */
! 69: | header statements
! 70: ;
1.1 downsj 71:
1.3 ! hin 72: header : id et
! 73: | et
! 74: ;
1.1 downsj 75:
1.3 ! hin 76: id : ID STRING
! 77: {
! 78: id_str = $2;
! 79: }
! 80: ;
! 81:
! 82: et : ET STRING
! 83: {
! 84: base = name2number($2);
! 85: strncpy(name, $2, sizeof(name));
! 86: name[sizeof(name) - 1] = '\0';
! 87: free($2);
! 88: }
! 89: | ET STRING STRING
! 90: {
! 91: base = name2number($2);
! 92: strncpy(name, $3, sizeof(name));
! 93: name[sizeof(name) - 1] = '\0';
! 94: free($2);
! 95: free($3);
! 96: }
! 97: ;
! 98:
! 99: statements : statement
! 100: | statements statement
! 101: ;
! 102:
! 103: statement : INDEX NUMBER
! 104: {
! 105: number = $2;
! 106: }
! 107: | PREFIX STRING
! 108: {
! 109: prefix = realloc(prefix, strlen($2) + 2);
! 110: strcpy(prefix, $2);
! 111: strcat(prefix, "_");
! 112: free($2);
! 113: }
! 114: | PREFIX
! 115: {
! 116: prefix = realloc(prefix, 1);
! 117: *prefix = '\0';
! 118: }
! 119: | EC STRING ',' STRING
! 120: {
! 121: struct error_code *ec = malloc(sizeof(*ec));
! 122:
! 123: ec->next = NULL;
! 124: ec->number = number;
! 125: if(prefix && *prefix != '\0') {
! 126: asprintf (&ec->name, "%s%s", prefix, $2);
! 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: ;
1.1 downsj 139:
1.3 ! hin 140: %%
1.1 downsj 141:
1.3 ! hin 142: long
! 143: name2number(const char *str)
1.1 downsj 144: {
1.3 ! hin 145: const char *p;
! 146: long base = 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: base = (base << 6) + (q - x) + 1;
! 160: }
! 161: base <<= 8;
! 162: if(base > 0x7fffffff)
! 163: base = -(0xffffffff - base + 1);
! 164: return base;
1.1 downsj 165: }
166:
1.2 art 167: void
1.3 ! hin 168: yyerror (char *s)
1.1 downsj 169: {
1.3 ! hin 170: error_message ("%s\n", s);
1.1 downsj 171: }
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