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- /* gen-protos.c - massages a list of prototypes, for use by fixproto.
- Copyright (C) 1993, 1994 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
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <stdio.h>
- #include <ctype.h>
- #include "hconfig.h"
- #include "scan.h"
-
- #define HASH_SIZE 2503 /* a prime */
-
- int hash_tab[HASH_SIZE];
- int verbose = 0;
-
- sstring linebuf;
-
- /* 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 ();
- }
-
- int
- main (argc, argv)
- int argc;
- char** argv;
- {
- FILE *inf = stdin;
- FILE *outf = stdout;
- int next_index = 0;
- int i, i0;
-
- fprintf (outf, "struct fn_decl std_protos[] = {\n");
-
- for (;;)
- {
- int c = skip_spaces (inf, ' ');
- int param_nesting = 1;
- char *param_start, *param_end, *decl_start,
- *name_start, *name_end;
- register char *ptr;
- if (c == EOF)
- break;
- linebuf.ptr = linebuf.base;
- ungetc (c, inf);
- c = read_upto (inf, &linebuf, '\n');
- if (linebuf.base[0] == '#') /* skip cpp command */
- continue;
- if (linebuf.base[0] == '\0') /* skip empty line */
- continue;
-
- ptr = linebuf.ptr - 1;
- while (*ptr == ' ' || *ptr == '\t') ptr--;
- if (*ptr-- != ';')
- {
- fprintf (stderr, "Funny input line: %s\n", linebuf.base);
- continue;
- }
- while (*ptr == ' ' || *ptr == '\t') ptr--;
- if (*ptr != ')')
- {
- fprintf (stderr, "Funny input line: %s\n", linebuf.base);
- continue;
- }
- param_end = ptr;
- for (;;)
- {
- int c = *--ptr;
- if (c == '(' && --param_nesting == 0)
- break;
- else if (c == ')')
- param_nesting++;
- }
- param_start = ptr+1;
-
- ptr--;
- while (*ptr == ' ' || *ptr == '\t') ptr--;
-
- if (!isalnum (*ptr))
- {
- if (verbose)
- fprintf (stderr, "%s: Can't handle this complex prototype: %s\n",
- argv[0], linebuf.base);
- continue;
- }
- name_end = ptr+1;
-
- while (isalnum (*ptr) || *ptr == '_') --ptr;
- name_start = ptr+1;
- while (*ptr == ' ' || *ptr == '\t') ptr--;
- ptr[1] = 0;
- *name_end = 0;
- *param_end = 0;
- *name_end = 0;
-
- decl_start = linebuf.base;
- if (strncmp (decl_start, "typedef ", 8) == 0)
- continue;
- if (strncmp (decl_start, "extern ", 7) == 0)
- decl_start += 7;
-
-
- /* NOTE: If you edit this,
- also edit lookup_std_proto in fix-header.c !! */
- i = hash (name_start) % HASH_SIZE;
- i0 = i;
- if (hash_tab[i] != 0)
- {
- for (;;)
- {
- i = (i+1) % HASH_SIZE;
- if (i == i0)
- abort ();
- if (hash_tab[i] == 0)
- break;
- }
- }
- hash_tab[i] = next_index;
-
- fprintf (outf, " {\"%s\", \"%s\", \"%s\" },\n",
- name_start, decl_start, param_start);
-
- next_index++;
-
- if (c == EOF)
- break;
- }
- fprintf (outf, "{0, 0, 0}\n};\n");
-
-
- fprintf (outf, "#define HASH_SIZE %d\n", HASH_SIZE);
- fprintf (outf, "short hash_tab[HASH_SIZE] = {\n");
- for (i = 0; i < HASH_SIZE; i++)
- fprintf (outf, " %d,\n", hash_tab[i]);
- fprintf (outf, "};\n");
-
- return 0;
- }
-