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guile/libguile/hashtab.c
Mikael Djurfeldt 78a0461a6f * __scm.h, backtrace.c, backtrace.h, debug.c, debug.h, dynl-dld.c,
dynwind.c, dynwind.h, eval.h, evalext.c, evalext.h, feature.c,
feature.h, hashtab.c, hashtab.h, objects.c, objects.h, print.c,
procs.c, procs.h, smob.c, smob.h, srcprop.c, strorder.c, struct.c,
struct.h: Updated copyrigth notices.
1999-09-12 11:16:13 +00:00

579 lines
13 KiB
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/* Copyright (C) 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 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#include <stdio.h>
#include "_scm.h"
#include "alist.h"
#include "hash.h"
#include "eval.h"
#include "hashtab.h"
SCM
scm_hash_fn_get_handle (table, obj, hash_fn, assoc_fn, closure)
SCM table;
SCM obj;
unsigned int (*hash_fn)();
SCM (*assoc_fn)();
void * closure;
{
unsigned int k;
SCM h;
SCM_ASSERT (SCM_NIMP (table) && SCM_VECTORP (table), table, SCM_ARG1, "hash_fn_get_handle");
if (SCM_LENGTH (table) == 0)
return SCM_EOL;
k = hash_fn (obj, SCM_LENGTH (table), closure);
SCM_ASSERT ((0 <= k) && (k < SCM_LENGTH (table)),
scm_ulong2num (k),
SCM_OUTOFRANGE,
"hash_fn_get_handle");
h = assoc_fn (obj, SCM_VELTS (table)[k], closure);
return h;
}
SCM
scm_hash_fn_create_handle_x (table, obj, init, hash_fn, assoc_fn, closure)
SCM table;
SCM obj;
SCM init;
unsigned int (*hash_fn)();
SCM (*assoc_fn)();
void * closure;
{
unsigned int k;
SCM it;
SCM_ASSERT (SCM_NIMP (table) && SCM_VECTORP (table), table, SCM_ARG1, "hash_fn_create_handle_x");
if (SCM_LENGTH (table) == 0)
return SCM_EOL;
k = hash_fn (obj, SCM_LENGTH (table), closure);
SCM_ASSERT ((0 <= k) && (k < SCM_LENGTH (table)),
scm_ulong2num (k),
SCM_OUTOFRANGE,
"hash_fn_create_handle_x");
SCM_REDEFER_INTS;
it = assoc_fn (obj, SCM_VELTS (table)[k], closure);
if (SCM_NIMP (it))
{
return it;
}
{
SCM new_bucket;
SCM old_bucket;
old_bucket = SCM_VELTS (table)[k];
new_bucket = scm_acons (obj, init, old_bucket);
SCM_VELTS(table)[k] = new_bucket;
SCM_REALLOW_INTS;
return SCM_CAR (new_bucket);
}
}
SCM
scm_hash_fn_ref (table, obj, dflt, hash_fn, assoc_fn, closure)
SCM table;
SCM obj;
SCM dflt;
unsigned int (*hash_fn)();
SCM (*assoc_fn)();
void * closure;
{
SCM it;
it = scm_hash_fn_get_handle (table, obj, hash_fn, assoc_fn, closure);
if (SCM_IMP (it))
return dflt;
else
return SCM_CDR (it);
}
SCM
scm_hash_fn_set_x (table, obj, val, hash_fn, assoc_fn, closure)
SCM table;
SCM obj;
SCM val;
unsigned int (*hash_fn)();
SCM (*assoc_fn)();
void * closure;
{
SCM it;
it = scm_hash_fn_create_handle_x (table, obj, SCM_BOOL_F, hash_fn, assoc_fn, closure);
SCM_SETCDR (it, val);
return val;
}
SCM
scm_hash_fn_remove_x (table, obj, hash_fn, assoc_fn, delete_fn, closure)
SCM table;
SCM obj;
unsigned int (*hash_fn)();
SCM (*assoc_fn)();
SCM (*delete_fn)();
void * closure;
{
unsigned int k;
SCM h;
SCM_ASSERT (SCM_NIMP (table) && SCM_VECTORP (table), table, SCM_ARG1, "hash_fn_remove_x");
if (SCM_LENGTH (table) == 0)
return SCM_EOL;
k = hash_fn (obj, SCM_LENGTH (table), closure);
SCM_ASSERT ((0 <= k) && (k < SCM_LENGTH (table)),
scm_ulong2num (k),
SCM_OUTOFRANGE,
"hash_fn_remove_x");
h = assoc_fn (obj, SCM_VELTS (table)[k], closure);
SCM_VELTS(table)[k] = delete_fn (h, SCM_VELTS(table)[k]);
return h;
}
SCM_PROC (s_hashq_get_handle, "hashq-get-handle", 2, 0, 0, scm_hashq_get_handle);
SCM
scm_hashq_get_handle (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_get_handle (table, obj, scm_ihashq, scm_sloppy_assq, 0);
}
SCM_PROC (s_hashq_create_handle_x, "hashq-create-handle!", 3, 0, 0, scm_hashq_create_handle_x);
SCM
scm_hashq_create_handle_x (table, obj, init)
SCM table;
SCM obj;
SCM init;
{
return scm_hash_fn_create_handle_x (table, obj, init, scm_ihashq, scm_sloppy_assq, 0);
}
SCM_PROC (s_hashq_ref, "hashq-ref", 2, 1, 0, scm_hashq_ref);
SCM
scm_hashq_ref (table, obj, dflt)
SCM table;
SCM obj;
SCM dflt;
{
if (dflt == SCM_UNDEFINED)
dflt = SCM_BOOL_F;
return scm_hash_fn_ref (table, obj, dflt, scm_ihashq, scm_sloppy_assq, 0);
}
SCM_PROC (s_hashq_set_x, "hashq-set!", 3, 0, 0, scm_hashq_set_x);
SCM
scm_hashq_set_x (table, obj, val)
SCM table;
SCM obj;
SCM val;
{
return scm_hash_fn_set_x (table, obj, val, scm_ihashq, scm_sloppy_assq, 0);
}
SCM_PROC (s_hashq_remove_x, "hashq-remove!", 2, 0, 0, scm_hashq_remove_x);
SCM
scm_hashq_remove_x (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_remove_x (table, obj, scm_ihashq, scm_sloppy_assq, scm_delq_x, 0);
}
SCM_PROC (s_hashv_get_handle, "hashv-get-handle", 2, 0, 0, scm_hashv_get_handle);
SCM
scm_hashv_get_handle (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_get_handle (table, obj, scm_ihashv, scm_sloppy_assv, 0);
}
SCM_PROC (s_hashv_create_handle_x, "hashv-create-handle!", 3, 0, 0, scm_hashv_create_handle_x);
SCM
scm_hashv_create_handle_x (table, obj, init)
SCM table;
SCM obj;
SCM init;
{
return scm_hash_fn_create_handle_x (table, obj, init, scm_ihashv, scm_sloppy_assv, 0);
}
SCM_PROC (s_hashv_ref, "hashv-ref", 2, 1, 0, scm_hashv_ref);
SCM
scm_hashv_ref (table, obj, dflt)
SCM table;
SCM obj;
SCM dflt;
{
if (dflt == SCM_UNDEFINED)
dflt = SCM_BOOL_F;
return scm_hash_fn_ref (table, obj, dflt, scm_ihashv, scm_sloppy_assv, 0);
}
SCM_PROC (s_hashv_set_x, "hashv-set!", 3, 0, 0, scm_hashv_set_x);
SCM
scm_hashv_set_x (table, obj, val)
SCM table;
SCM obj;
SCM val;
{
return scm_hash_fn_set_x (table, obj, val, scm_ihashv, scm_sloppy_assv, 0);
}
SCM_PROC (s_hashv_remove_x, "hashv-remove!", 2, 0, 0, scm_hashv_remove_x);
SCM
scm_hashv_remove_x (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_remove_x (table, obj, scm_ihashv, scm_sloppy_assv, scm_delv_x, 0);
}
SCM_PROC (s_hash_get_handle, "hash-get-handle", 2, 0, 0, scm_hash_get_handle);
SCM
scm_hash_get_handle (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_get_handle (table, obj, scm_ihash, scm_sloppy_assoc, 0);
}
SCM_PROC (s_hash_create_handle_x, "hash-create-handle!", 3, 0, 0, scm_hash_create_handle_x);
SCM
scm_hash_create_handle_x (table, obj, init)
SCM table;
SCM obj;
SCM init;
{
return scm_hash_fn_create_handle_x (table, obj, init, scm_ihash, scm_sloppy_assoc, 0);
}
SCM_PROC (s_hash_ref, "hash-ref", 2, 1, 0, scm_hash_ref);
SCM
scm_hash_ref (table, obj, dflt)
SCM table;
SCM obj;
SCM dflt;
{
if (dflt == SCM_UNDEFINED)
dflt = SCM_BOOL_F;
return scm_hash_fn_ref (table, obj, dflt, scm_ihash, scm_sloppy_assoc, 0);
}
SCM_PROC (s_hash_set_x, "hash-set!", 3, 0, 0, scm_hash_set_x);
SCM
scm_hash_set_x (table, obj, val)
SCM table;
SCM obj;
SCM val;
{
return scm_hash_fn_set_x (table, obj, val, scm_ihash, scm_sloppy_assoc, 0);
}
SCM_PROC (s_hash_remove_x, "hash-remove!", 2, 0, 0, scm_hash_remove_x);
SCM
scm_hash_remove_x (table, obj)
SCM table;
SCM obj;
{
return scm_hash_fn_remove_x (table, obj, scm_ihash, scm_sloppy_assoc, scm_delete_x, 0);
}
struct scm_ihashx_closure
{
SCM hash;
SCM assoc;
SCM delete;
};
static unsigned int scm_ihashx SCM_P ((SCM obj, unsigned int n, struct scm_ihashx_closure * closure));
static unsigned int
scm_ihashx (obj, n, closure)
SCM obj;
unsigned int n;
struct scm_ihashx_closure * closure;
{
SCM answer;
SCM_ALLOW_INTS;
answer = scm_apply (closure->hash,
scm_listify (obj, scm_ulong2num ((unsigned long)n), SCM_UNDEFINED),
SCM_EOL);
SCM_DEFER_INTS;
return SCM_INUM (answer);
}
static SCM scm_sloppy_assx SCM_P ((SCM obj, SCM alist, struct scm_ihashx_closure * closure));
static SCM
scm_sloppy_assx (obj, alist, closure)
SCM obj;
SCM alist;
struct scm_ihashx_closure * closure;
{
SCM answer;
SCM_ALLOW_INTS;
answer = scm_apply (closure->assoc,
scm_listify (obj, alist, SCM_UNDEFINED),
SCM_EOL);
SCM_DEFER_INTS;
return answer;
}
static SCM scm_delx_x SCM_P ((SCM obj, SCM alist, struct scm_ihashx_closure * closure));
static SCM
scm_delx_x (obj, alist, closure)
SCM obj;
SCM alist;
struct scm_ihashx_closure * closure;
{
SCM answer;
SCM_ALLOW_INTS;
answer = scm_apply (closure->delete,
scm_listify (obj, alist, SCM_UNDEFINED),
SCM_EOL);
SCM_DEFER_INTS;
return answer;
}
SCM_PROC (s_hashx_get_handle, "hashx-get-handle", 4, 0, 0, scm_hashx_get_handle);
SCM
scm_hashx_get_handle (hash, assoc, table, obj)
SCM hash;
SCM assoc;
SCM table;
SCM obj;
{
struct scm_ihashx_closure closure;
closure.hash = hash;
closure.assoc = assoc;
return scm_hash_fn_get_handle (table, obj, scm_ihashx, scm_sloppy_assx, (void *)&closure);
}
SCM_PROC (s_hashx_create_handle_x, "hashx-create-handle!", 5, 0, 0, scm_hashx_create_handle_x);
SCM
scm_hashx_create_handle_x (hash, assoc, table, obj, init)
SCM hash;
SCM assoc;
SCM table;
SCM obj;
SCM init;
{
struct scm_ihashx_closure closure;
closure.hash = hash;
closure.assoc = assoc;
return scm_hash_fn_create_handle_x (table, obj, init, scm_ihashx, scm_sloppy_assx, (void *)&closure);
}
SCM_PROC (s_hashx_ref, "hashx-ref", 4, 1, 0, scm_hashx_ref);
SCM
scm_hashx_ref (hash, assoc, table, obj, dflt)
SCM hash;
SCM assoc;
SCM table;
SCM obj;
SCM dflt;
{
struct scm_ihashx_closure closure;
if (dflt == SCM_UNDEFINED)
dflt = SCM_BOOL_F;
closure.hash = hash;
closure.assoc = assoc;
return scm_hash_fn_ref (table, obj, dflt, scm_ihashx, scm_sloppy_assx, (void *)&closure);
}
SCM_PROC (s_hashx_set_x, "hashx-set!", 5, 0, 0, scm_hashx_set_x);
SCM
scm_hashx_set_x (hash, assoc, table, obj, val)
SCM hash;
SCM assoc;
SCM table;
SCM obj;
SCM val;
{
struct scm_ihashx_closure closure;
closure.hash = hash;
closure.assoc = assoc;
return scm_hash_fn_set_x (table, obj, val, scm_ihashx, scm_sloppy_assx, (void *)&closure);
}
SCM
scm_hashx_remove_x (hash, assoc, delete, table, obj)
SCM hash;
SCM assoc;
SCM delete;
SCM table;
SCM obj;
{
struct scm_ihashx_closure closure;
closure.hash = hash;
closure.assoc = assoc;
closure.delete = delete;
return scm_hash_fn_remove_x (table, obj, scm_ihashx, scm_sloppy_assx, scm_delx_x, 0);
}
static SCM
fold_proc (void *proc, SCM key, SCM data, SCM value)
{
return scm_apply ((SCM) proc, SCM_LIST3 (key, data, value), SCM_EOL);
}
SCM_PROC (s_hash_fold, "hash-fold", 3, 0, 0, scm_hash_fold);
SCM
scm_hash_fold (SCM proc, SCM init, SCM table)
{
SCM_ASSERT (SCM_NIMP (table) && SCM_VECTORP (table),
table, SCM_ARG1, s_hash_fold);
SCM_ASSERT (SCM_NIMP (proc) && SCM_NFALSEP (scm_procedure_p (proc)),
proc, SCM_ARG2, s_hash_fold);
return scm_internal_hash_fold (fold_proc, (void *) proc, init, table);
}
SCM
scm_internal_hash_fold (SCM (*fn) (), void *closure, SCM init, SCM table)
{
int i, n = SCM_LENGTH (table);
SCM result = init;
for (i = 0; i < n; ++i)
{
SCM ls = SCM_VELTS (table)[i], handle;
while (SCM_NNULLP (ls))
{
SCM_ASSERT (SCM_NIMP (ls) && SCM_CONSP (ls),
table, SCM_ARG1, s_hash_fold);
handle = SCM_CAR (ls);
SCM_ASSERT (SCM_NIMP (handle) && SCM_CONSP (handle),
table, SCM_ARG1, s_hash_fold);
result = fn (closure, SCM_CAR (handle), SCM_CDR (handle), result);
ls = SCM_CDR (ls);
}
}
return result;
}
void
scm_init_hashtab ()
{
#include "hashtab.x"
}