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%{
#include <stdio.h>
char *str_concat(), *ds(), *quote();
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
char *current_token = (char *)NULL;
extern char *table_name;
%}
%union {
char *dynstr;
}
%token ERROR_TABLE ERROR_CODE_ENTRY END
%token <dynstr> STRING QUOTED_STRING
%type <dynstr> ec_name description table_id
%{
%}
%start error_table
%%
error_table : ERROR_TABLE table_id error_codes END
{ table_name = ds($2);
current_token = table_name;
put_ecs(); }
;
table_id : STRING
{ current_token = $1;
set_table_num($1);
$$ = $1; }
;
error_codes : error_codes ec_entry
| ec_entry
;
ec_entry : ERROR_CODE_ENTRY ec_name ',' description
{ add_ec($2, $4);
free($2);
free($4); }
| ERROR_CODE_ENTRY ec_name '=' STRING ',' description
{ add_ec_val($2, $4, $6);
free($2);
free($4);
free($6);
}
;
ec_name : STRING
{ $$ = ds($1);
current_token = $$; }
;
description : QUOTED_STRING
{ $$ = ds($1);
current_token = $$; }
;
%%
/*
*
* Copyright 1986, 1987 by the MIT Student Information Processing Board
*
* For copyright info, see mit-sipb-copyright.h.
*/
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/time.h>
#include "internal.h"
#include "error_table.h"
#include "mit-sipb-copyright.h"
extern FILE *hfile, *cfile;
static long gensym_n = 0;
char *
gensym(x)
char const *x;
{
char *symbol;
if (!gensym_n) {
struct timeval tv;
struct timezone tzp;
gettimeofday(&tv, &tzp);
gensym_n = (tv.tv_sec%10000)*100 + tv.tv_usec/10000;
}
symbol = malloc(32 * sizeof(char));
gensym_n++;
sprintf(symbol, "et%ld", gensym_n);
return(symbol);
}
char *
ds(string)
char const *string;
{
char *rv;
rv = malloc(strlen(string)+1);
strcpy(rv, string);
return(rv);
}
char *
quote(string)
char const *string;
{
char *rv;
rv = malloc(strlen(string)+3);
strcpy(rv, "\"");
strcat(rv, string);
strcat(rv, "\"");
return(rv);
}
long table_number;
int current = 0;
char **error_codes = (char **)NULL;
add_ec(name, description)
char const *name, *description;
{
fprintf(cfile, "\t\"%s\",\n", description);
if (error_codes == (char **)NULL) {
error_codes = (char **)malloc(sizeof(char *));
*error_codes = (char *)NULL;
}
error_codes = (char **)realloc((char *)error_codes,
(current + 2)*sizeof(char *));
error_codes[current++] = ds(name);
error_codes[current] = (char *)NULL;
}
add_ec_val(name, val, description)
char const *name, *val, *description;
{
const int ncurrent = atoi(val);
if (ncurrent < current) {
printf("Error code %s (%d) out of order", name,
current);
return;
}
while (ncurrent > current)
fputs("\t(char *)NULL,\n", cfile), current++;
fprintf(cfile, "\t\"%s\",\n", description);
if (error_codes == (char **)NULL) {
error_codes = (char **)malloc(sizeof(char *));
*error_codes = (char *)NULL;
}
error_codes = (char **)realloc((char *)error_codes,
(current + 2)*sizeof(char *));
error_codes[current++] = ds(name);
error_codes[current] = (char *)NULL;
}
put_ecs()
{
int i;
for (i = 0; i < current; i++) {
if (error_codes[i] != (char *)NULL)
fprintf(hfile, "#define %-40s (%ldL)\n",
error_codes[i], table_number + i);
}
}
/*
* char_to_num -- maps letters and numbers into a small numbering space
* uppercase -> 1-26
* lowercase -> 27-52
* digits -> 53-62
* underscore-> 63
*/
static const char char_set[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
int char_to_num(c)
char c;
{
const char *where;
int diff;
where = strchr (char_set, c);
if (where) {
diff = where - char_set + 1;
assert (diff < (1 << ERRCODE_RANGE));
return diff;
}
else if (isprint (c))
fprintf (stderr,
"Illegal character `%c' in error table name\n",
c);
else
fprintf (stderr,
"Illegal character %03o in error table name\n",
c);
exit (1);
}
set_table_num(string)
char *string;
{
if (char_to_num (string[0]) > char_to_num ('z')) {
fprintf (stderr, "%s%s%s%s",
"First character of error table name must be ",
"a letter; name ``",
string, "'' rejected\n");
exit (1);
}
if (strlen(string) > 4) {
fprintf(stderr, "Table name %s too long, truncated ",
string);
string[4] = '\0';
fprintf(stderr, "to %s\n", string);
}
while (*string != '\0') {
table_number = (table_number << BITS_PER_CHAR)
+ char_to_num(*string);
string++;
}
table_number = table_number << ERRCODE_RANGE;
}
#include "et_lex.lex.c"
|
