170 lines
3.7 KiB
Plaintext
170 lines
3.7 KiB
Plaintext
%{
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/*
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* Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#include "compile_et.h"
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#include "lex.h"
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#if 0
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RCSID("$Id: parse.y,v 1.11 2000/06/22 00:42:52 assar Exp $");
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#endif
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void yyerror (char *s);
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static long name2number(const char *str);
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extern char *yytext;
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/* This is for bison */
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#if !defined(alloca) && !defined(HAVE_ALLOCA)
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#define alloca(x) malloc(x)
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#endif
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%}
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%union {
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char *string;
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int number;
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}
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%token ET INDEX PREFIX EC ID END
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%token <string> STRING
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%token <number> NUMBER
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%%
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file : /* */
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| header statements
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;
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header : id et
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| et
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;
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id : ID STRING
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{
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id_str = $2;
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}
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;
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et : ET STRING
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{
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base = name2number($2);
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strncpy(name, $2, sizeof(name));
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name[sizeof(name) - 1] = '\0';
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free($2);
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}
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| ET STRING STRING
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{
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base = name2number($2);
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strncpy(name, $3, sizeof(name));
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name[sizeof(name) - 1] = '\0';
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free($2);
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free($3);
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}
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;
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statements : statement
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| statements statement
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;
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statement : INDEX NUMBER
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{
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number = $2;
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}
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| PREFIX STRING
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{
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prefix = realloc(prefix, strlen($2) + 2);
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strcpy(prefix, $2);
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strcat(prefix, "_");
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free($2);
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}
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| PREFIX
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{
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prefix = realloc(prefix, 1);
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*prefix = '\0';
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}
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| EC STRING ',' STRING
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{
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struct error_code *ec = malloc(sizeof(*ec));
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ec->next = NULL;
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ec->number = number;
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if(prefix && *prefix != '\0') {
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asprintf (&ec->name, "%s%s", prefix, $2);
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free($2);
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} else
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ec->name = $2;
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ec->string = $4;
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APPEND(codes, ec);
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number++;
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}
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| END
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{
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YYACCEPT;
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}
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;
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%%
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static long
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name2number(const char *str)
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{
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const char *p;
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long base = 0;
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const char *x = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz0123456789_";
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if(strlen(str) > 4) {
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yyerror("table name too long");
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return 0;
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}
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for(p = str; *p; p++){
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char *q = strchr(x, *p);
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if(q == NULL) {
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yyerror("invalid character in table name");
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return 0;
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}
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base = (base << 6) + (q - x) + 1;
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}
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base <<= 8;
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if(base > 0x7fffffff)
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base = -(0xffffffff - base + 1);
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return base;
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}
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void
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yyerror (char *s)
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{
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error_message ("%s\n", s);
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}
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