Annotation of src/usr.bin/compile_et/error_table.y, Revision 1.6
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;
1.5 deraadt 48: int yyparse(void);
1.1 downsj 49:
1.3 hin 50: /* This is for bison */
1.1 downsj 51:
1.3 hin 52: #if !defined(alloca) && !defined(HAVE_ALLOCA)
53: #define alloca(x) malloc(x)
1.1 downsj 54: #endif
55:
1.3 hin 56: %}
1.1 downsj 57:
1.3 hin 58: %union {
59: char *string;
60: int number;
1.1 downsj 61: }
62:
1.3 hin 63: %token ET INDEX PREFIX EC ID END
64: %token <string> STRING
65: %token <number> NUMBER
1.1 downsj 66:
1.3 hin 67: %%
1.1 downsj 68:
1.3 hin 69: file : /* */
70: | header statements
71: ;
1.1 downsj 72:
1.3 hin 73: header : id et
74: | et
75: ;
1.1 downsj 76:
1.3 hin 77: id : ID STRING
78: {
79: id_str = $2;
80: }
81: ;
82:
83: et : ET STRING
84: {
85: base = name2number($2);
1.6 ! jaredy 86: strlcpy(name, $2, sizeof(name));
1.3 hin 87: free($2);
88: }
89: | ET STRING STRING
90: {
91: base = name2number($2);
1.6 ! jaredy 92: strlcpy(name, $3, sizeof(name));
1.3 hin 93: free($2);
94: free($3);
95: }
96: ;
97:
98: statements : statement
99: | statements statement
100: ;
101:
102: statement : INDEX NUMBER
103: {
104: number = $2;
105: }
106: | PREFIX STRING
107: {
1.4 deraadt 108: size_t len = strlen($2) + 2;
1.6 ! jaredy 109:
! 110: if ((prefix = realloc(prefix, len)) == NULL) {
! 111: yyerror(strerror(errno));
! 112: exit(1);
! 113: }
1.4 deraadt 114: strlcpy(prefix, $2, len);
115: strlcat(prefix, "_", len);
1.3 hin 116: free($2);
117: }
118: | PREFIX
119: {
1.6 ! jaredy 120: if ((prefix = realloc(prefix, 1)) == NULL) {
! 121: yyerror(strerror(errno));
! 122: exit(1);
! 123: }
1.3 hin 124: *prefix = '\0';
125: }
126: | EC STRING ',' STRING
127: {
128: struct error_code *ec = malloc(sizeof(*ec));
1.6 ! jaredy 129:
! 130: if (ec == NULL) {
! 131: yyerror(strerror(errno));
! 132: exit(1);
! 133: }
1.3 hin 134: ec->next = NULL;
135: ec->number = number;
136: if(prefix && *prefix != '\0') {
1.6 ! jaredy 137: if (asprintf (&ec->name, "%s%s", prefix, $2) == -1) {
! 138: yyerror(strerror(errno));
! 139: exit(1);
! 140: }
1.3 hin 141: free($2);
142: } else
143: ec->name = $2;
144: ec->string = $4;
145: APPEND(codes, ec);
146: number++;
147: }
148: | END
149: {
150: YYACCEPT;
151: }
152: ;
1.1 downsj 153:
1.3 hin 154: %%
1.1 downsj 155:
1.3 hin 156: long
157: name2number(const char *str)
1.1 downsj 158: {
1.3 hin 159: const char *p;
160: long base = 0;
161: const char *x = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
162: "abcdefghijklmnopqrstuvwxyz0123456789_";
163: if(strlen(str) > 4) {
164: yyerror("table name too long");
165: return 0;
166: }
167: for(p = str; *p; p++){
168: char *q = strchr(x, *p);
169: if(q == NULL) {
170: yyerror("invalid character in table name");
171: return 0;
172: }
173: base = (base << 6) + (q - x) + 1;
174: }
175: base <<= 8;
176: if(base > 0x7fffffff)
177: base = -(0xffffffff - base + 1);
178: return base;
1.1 downsj 179: }
180:
1.2 art 181: void
1.3 hin 182: yyerror (char *s)
1.1 downsj 183: {
1.3 hin 184: error_message ("%s\n", s);
1.1 downsj 185: }
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