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|
%{
#include <stdio.h>
char *str_concat(), *ds(), *quote(), *malloc(), *realloc();
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 Copyright.SIPB.
*/
#include <stdlib.h>
#include <strings.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/time.h>
#include "error_table.h"
extern FILE *hfile, *cfile;
static long gensym_n = 0;
char *
gensym(x)
char *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 *string;
{
char *rv;
rv = malloc(strlen(string)+1);
strcpy(rv, string);
return(rv);
}
char *
quote(string)
char *string;
{
char *rv;
rv = malloc(strlen(string)+3);
strcpy(rv, "\"");
strcat(rv, string);
strcat(rv, "\"");
return(rv);
}
int table_number;
int current = 0;
char **error_codes = (char **)NULL;
add_ec(name, description)
char *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 *name, *val, *description;
{
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 ((%s)%d)\n",
error_codes[i], ERROR_CODE, 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
*/
int
char_to_num(c)
char c;
{
if (isupper(c))
return(c-'A'+1);
else if (islower(c))
return(c-'a'+27);
else if (isdigit(c))
return(c-'0'+53);
else {
fprintf(stderr, "Illegal character in name: %c\n", c);
exit(1);
/*NOTREACHED*/
}
}
set_table_num(string)
char *string;
{
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"
|
