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- /* Fast lookup table abstraction implemented as a Guilmette Array
- Copyright (C) 1989 Free Software Foundation, Inc.
- written by Douglas C. Schmidt (schmidt@ics.uci.edu)
-
- This file is part of GNU GPERF.
-
- GNU GPERF 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 1, or (at your option)
- any later version.
-
- GNU GPERF 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 GNU GPERF; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <stdio.h>
- #include "boolarray.h"
- #include "options.h"
-
- /* Locally visible BOOL_ARRAY object. */
-
- static BOOL_ARRAY bool_array;
-
- /* Prints out debugging diagnostics. */
-
- void
- bool_array_destroy ()
- {
- if (OPTION_ENABLED (option, DEBUG))
- fprintf (stderr, "\ndumping boolean array information\niteration number = %d\nend of array dump\n",
- bool_array.iteration_number);
- free ((char *) bool_array.storage_array);
- }
-
- void
- bool_array_init (size)
- int size;
- {
- STORAGE_TYPE *xmalloc ();
- bool_array.iteration_number = 1;
- bool_array.size = size;
- bool_array.storage_array = xmalloc (size * sizeof *bool_array.storage_array);
- bzero (bool_array.storage_array, size * sizeof *bool_array.storage_array);
- if (OPTION_ENABLED (option, DEBUG))
- fprintf (stderr, "\nbool array size = %d, total bytes = %d\n",
- bool_array.size, bool_array.size * sizeof *bool_array.storage_array);
- }
-
- bool
- lookup (index)
- int index;
- {
- if (bool_array.storage_array[index] == bool_array.iteration_number)
- return 1;
- else
- {
- bool_array.storage_array[index] = bool_array.iteration_number;
- return 0;
- }
- }
-
- /* Simple enough to reset, eh?! */
-
- void
- bool_array_reset ()
- {
- /* If we wrap around it's time to zero things out again! */
-
-
- if (++bool_array.iteration_number == 0)
- {
- if (OPTION_ENABLED (option, DEBUG))
- {
- fprintf (stderr, "(re-initializing bool_array)...");
- fflush (stderr);
- }
- bool_array.iteration_number = 1;
- bzero (bool_array.storage_array, bool_array.size * sizeof *bool_array.storage_array);
- if (OPTION_ENABLED (option, DEBUG))
- {
- fprintf (stderr, "done\n");
- fflush (stderr);
- }
- }
- }
-