#ifndef SCM_HASHTAB_H
#define SCM_HASHTAB_H
-/* Copyright (C) 1995,1996,1999,2000,2001, 2003, 2004, 2006, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1999,2000,2001, 2003, 2004, 2006, 2008, 2009, 2011 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
\f
#include "libguile/__scm.h"
-#include "weaks.h"
-
\f
-#define SCM_HASHTABLEF_WEAK_CAR SCM_WVECTF_WEAK_KEY
-#define SCM_HASHTABLEF_WEAK_CDR SCM_WVECTF_WEAK_VALUE
-
-SCM_API scm_t_bits scm_tc16_hashtable;
-
-#define SCM_HASHTABLE_P(x) SCM_SMOB_PREDICATE (scm_tc16_hashtable, x)
+#define SCM_HASHTABLE_P(x) (SCM_HAS_TYP7 (x, scm_tc7_hashtable))
#define SCM_VALIDATE_HASHTABLE(pos, arg) \
SCM_MAKE_VALIDATE_MSG (pos, arg, HASHTABLE_P, "hash-table")
-#define SCM_HASHTABLE_VECTOR(h) SCM_SMOB_OBJECT (h)
-#define SCM_SET_HASHTABLE_VECTOR(x, v) SCM_SET_SMOB_OBJECT ((x), (v))
-#define SCM_HASHTABLE(x) ((scm_t_hashtable *) SCM_SMOB_DATA_2 (x))
-#define SCM_HASHTABLE_FLAGS(x) (SCM_HASHTABLE (x)->flags)
-#define SCM_HASHTABLE_WEAK_KEY_P(x) \
- (SCM_HASHTABLE_FLAGS (x) & SCM_HASHTABLEF_WEAK_CAR)
-#define SCM_HASHTABLE_WEAK_VALUE_P(x) \
- (SCM_HASHTABLE_FLAGS (x) & SCM_HASHTABLEF_WEAK_CDR)
-#define SCM_HASHTABLE_DOUBLY_WEAK_P(x) \
- ((SCM_HASHTABLE_FLAGS (x) \
- & (SCM_HASHTABLEF_WEAK_CAR | SCM_HASHTABLEF_WEAK_CDR)) \
- == (SCM_HASHTABLEF_WEAK_CAR | SCM_HASHTABLEF_WEAK_CDR))
-#define SCM_HASHTABLE_WEAK_P(x) SCM_HASHTABLE_FLAGS (x)
+#define SCM_HASHTABLE_VECTOR(h) SCM_CELL_OBJECT_1 (h)
+#define SCM_SET_HASHTABLE_VECTOR(x, v) SCM_SET_CELL_OBJECT_1 ((x), (v))
+#define SCM_HASHTABLE(x) ((scm_t_hashtable *) SCM_CELL_WORD_2 (x))
#define SCM_HASHTABLE_N_ITEMS(x) (SCM_HASHTABLE (x)->n_items)
#define SCM_SET_HASHTABLE_N_ITEMS(x, n) (SCM_HASHTABLE (x)->n_items = n)
#define SCM_HASHTABLE_INCREMENT(x) (SCM_HASHTABLE_N_ITEMS(x)++)
#define SCM_SET_HASHTABLE_BUCKET(h, i, x) \
SCM_SIMPLE_VECTOR_SET (SCM_HASHTABLE_VECTOR (h), i, x)
+/* Function that computes a hash of OBJ modulo MAX. */
+typedef unsigned long (*scm_t_hash_fn) (SCM obj, unsigned long max,
+ void *closure);
+
+/* Function that returns the value associated with OBJ in ALIST according to
+ some equality predicate. */
+typedef SCM (*scm_t_assoc_fn) (SCM obj, SCM alist, void *closure);
+
+/* Function to fold over the entries of a hash table. */
+typedef SCM (*scm_t_hash_fold_fn) (void *closure, SCM key, SCM value,
+ SCM result);
+
+/* Function to iterate over the handles (key-value pairs) of a hash
+ table. */
+typedef SCM (*scm_t_hash_handle_fn) (void *closure, SCM handle);
+
typedef struct scm_t_hashtable {
- int flags; /* properties of table */
unsigned long n_items; /* number of items in table */
unsigned long lower; /* when to shrink */
unsigned long upper; /* when to grow */
int size_index; /* index into hashtable_size */
int min_size_index; /* minimum size_index */
- unsigned long (*hash_fn) (); /* for rehashing after a GC. */
+ scm_t_hash_fn hash_fn; /* for rehashing after a GC. */
} scm_t_hashtable;
\f
-#if 0
-typedef unsigned int scm_t_hash_fn (SCM obj, unsigned int d, void *closure);
-typedef SCM scm_t_assoc_fn (SCM key, SCM alist, void *closure);
-typedef SCM scm_t_delete_fn (SCM elt, SCM list);
-#endif
-
SCM_API SCM scm_vector_to_hash_table (SCM vector);
SCM_API SCM scm_c_make_hash_table (unsigned long k);
SCM_API SCM scm_make_hash_table (SCM n);
-SCM_API SCM scm_make_weak_key_hash_table (SCM k);
-SCM_API SCM scm_make_weak_value_hash_table (SCM k);
-SCM_API SCM scm_make_doubly_weak_hash_table (SCM k);
SCM_API SCM scm_hash_table_p (SCM h);
-SCM_API SCM scm_weak_key_hash_table_p (SCM h);
-SCM_API SCM scm_weak_value_hash_table_p (SCM h);
-SCM_API SCM scm_doubly_weak_hash_table_p (SCM h);
-SCM_INTERNAL void scm_i_rehash (SCM table, unsigned long (*hash_fn)(),
+SCM_INTERNAL void scm_i_rehash (SCM table, scm_t_hash_fn hash_fn,
void *closure, const char *func_name);
-SCM_API SCM scm_hash_fn_get_handle (SCM table, SCM obj, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
-SCM_API SCM scm_hash_fn_create_handle_x (SCM table, SCM obj, SCM init, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
-SCM_API SCM scm_hash_fn_ref (SCM table, SCM obj, SCM dflt, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
-SCM_API SCM scm_hash_fn_set_x (SCM table, SCM obj, SCM val, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
-SCM_API SCM scm_hash_fn_remove_x (SCM table, SCM obj, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
-SCM_API SCM scm_internal_hash_fold (SCM (*fn) (), void *closure, SCM init, SCM table);
-SCM_API void scm_internal_hash_for_each_handle (SCM (*fn) (), void *closure, SCM table);
+
+SCM_API SCM scm_hash_fn_get_handle (SCM table, SCM obj,
+ scm_t_hash_fn hash_fn,
+ scm_t_assoc_fn assoc_fn,
+ void *closure);
+SCM_API SCM scm_hash_fn_create_handle_x (SCM table, SCM obj, SCM init,
+ scm_t_hash_fn hash_fn,
+ scm_t_assoc_fn assoc_fn,
+ void *closure);
+SCM_API SCM scm_hash_fn_ref (SCM table, SCM obj, SCM dflt,
+ scm_t_hash_fn hash_fn,
+ scm_t_assoc_fn assoc_fn,
+ void *closure);
+SCM_API SCM scm_hash_fn_set_x (SCM table, SCM obj, SCM val,
+ scm_t_hash_fn hash_fn,
+ scm_t_assoc_fn assoc_fn,
+ void *closure);
+SCM_API SCM scm_hash_fn_remove_x (SCM table, SCM obj,
+ scm_t_hash_fn hash_fn,
+ scm_t_assoc_fn assoc_fn,
+ void *closure);
+SCM_API SCM scm_internal_hash_fold (scm_t_hash_fold_fn fn, void *closure,
+ SCM init, SCM table);
+SCM_API void scm_internal_hash_for_each_handle (scm_t_hash_handle_fn fn,
+ void *closure, SCM table);
SCM_API SCM scm_hash_clear_x (SCM table);
SCM_API SCM scm_hashq_get_handle (SCM table, SCM obj);
SCM_API SCM scm_hash_for_each (SCM proc, SCM hash);
SCM_API SCM scm_hash_for_each_handle (SCM proc, SCM hash);
SCM_API SCM scm_hash_map_to_list (SCM proc, SCM hash);
-SCM_INTERNAL void scm_hashtab_prehistory (void);
+SCM_API SCM scm_hash_count (SCM hash, SCM pred);
+SCM_INTERNAL void scm_i_hashtable_print (SCM exp, SCM port, scm_print_state *pstate);
SCM_INTERNAL void scm_init_hashtab (void);
#endif /* SCM_HASHTAB_H */
HCoop / bpt / guile.git / blobdiff