/* gen-protos.c - massages a list of prototypes, for use by fixproto.
- Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994, 1995, 1996, 1998,
+ 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#include <stdio.h>
-#include <ctype.h>
#include "hconfig.h"
+#include "system.h"
#include "scan.h"
-#include "cpplib.h"
-#include "cpphash.h"
+#undef abort
int verbose = 0;
-char *progname;
+const char *progname;
-/* Table of prototypes that override sys-protos.h. */
-static char *overrides[] =
-{
-#ifdef SYS_PROTO_OVERRIDES
- SYS_PROTO_OVERRIDES
-#endif
- 0
-};
+static void add_hash PARAMS ((const char *));
+static int parse_fn_proto PARAMS ((char *, char *, struct fn_decl *));
#define HASH_SIZE 2503 /* a prime */
int hash_tab[HASH_SIZE];
int next_index;
-
-static int
-hashf (name, len, hashsize)
- register U_CHAR *name;
- register int len;
- int hashsize;
-{
- register int r = 0;
-
- while (len--)
- r = HASHSTEP (r, *name++);
-
- return MAKE_POS (r) % hashsize;
-}
+int collisions;
static void
add_hash (fname)
- char *fname;
+ const char *fname;
{
int i, i0;
/* NOTE: If you edit this, also edit lookup_std_proto in fix-header.c !! */
- i = hashf (fname, strlen (fname), HASH_SIZE);
+ i = hashstr (fname, strlen (fname)) % HASH_SIZE;
i0 = i;
if (hash_tab[i] != 0)
{
+ collisions++;
for (;;)
{
i = (i+1) % HASH_SIZE;
char *start, *end;
struct fn_decl *fn;
{
- register char *ptr;
+ char *ptr;
int param_nesting = 1;
char *param_start, *param_end, *decl_start, *name_start, *name_end;
ptr--;
while (*ptr == ' ' || *ptr == '\t') ptr--;
- if (!isalnum (*ptr))
+ if (!ISALNUM ((unsigned char)*ptr))
{
if (verbose)
fprintf (stderr, "%s: Can't handle this complex prototype: %s\n",
}
name_end = ptr+1;
- while (isalnum (*ptr) || *ptr == '_') --ptr;
+ while (ISIDNUM (*ptr))
+ --ptr;
name_start = ptr+1;
while (*ptr == ' ' || *ptr == '\t') ptr--;
ptr[1] = 0;
return 1;
}
+extern int main PARAMS ((int, char **));
+
int
main (argc, argv)
- int argc;
+ int argc ATTRIBUTE_UNUSED;
char **argv;
{
FILE *inf = stdin;
FILE *outf = stdout;
int i;
sstring linebuf;
- char **optr;
struct fn_decl fn_decl;
i = strlen (argv[0]);
fprintf (outf, "struct fn_decl std_protos[] = {\n");
/* A hash table entry of 0 means "unused" so reserve it. */
- fprintf (outf, " {\"\", \"\", \"\"},\n");
+ fprintf (outf, " {\"\", \"\", \"\", 0},\n");
next_index = 1;
- /* Output the overriding prototypes first so fix-header will use them
- in preference to the default ones. */
- /* ??? Two copies of the prototype are output. This doesn't cause any
- problems, but one might wish to avoid outputting the second one. */
-
- for (optr = overrides; *optr; ++optr)
- {
- /* Using sstring's here may be overkill but parse_fn_proto modifies
- the input string. */
- linebuf.ptr = linebuf.base;
- make_sstring_space (&linebuf, strlen (*optr) + 1);
- strcpy (linebuf.base, *optr);
- linebuf.ptr = linebuf.base + strlen (*optr);
-
- if (! parse_fn_proto (linebuf.base, linebuf.ptr, &fn_decl))
- continue;
-
- add_hash (fn_decl.fname);
-
- fprintf (outf, " {\"%s\", \"%s\", \"%s\"},\n",
- fn_decl.fname, fn_decl.rtype, fn_decl.params);
- }
-
for (;;)
{
int c = skip_spaces (inf, ' ');
add_hash (fn_decl.fname);
- fprintf (outf, " {\"%s\", \"%s\", \"%s\"},\n",
+ fprintf (outf, " {\"%s\", \"%s\", \"%s\", 0},\n",
fn_decl.fname, fn_decl.rtype, fn_decl.params);
if (c == EOF)
break;
}
- fprintf (outf, " {0, 0, 0}\n};\n");
+ fprintf (outf, " {0, 0, 0, 0}\n};\n");
fprintf (outf, "#define HASH_SIZE %d\n", HASH_SIZE);
fprintf (outf, " %d,\n", hash_tab[i]);
fprintf (outf, "};\n");
+ fprintf (stderr, "gen-protos: %d entries %d collisions\n",
+ next_index, collisions);
+
return 0;
}
-
-/* Avoid error if config defines abort as fancy_abort.
- It's not worth "really" implementing this because ordinary
- compiler users never run fix-header. */
-
-void
-fancy_abort ()
-{
- abort ();
-}
-
-void
-fatal (s)
- char *s;
-{
- fprintf (stderr, "%s: %s\n", "gen-protos", s);
- exit (FATAL_EXIT_CODE);
-}