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/* Copyright (C) 1995,1996,1998 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, Free Software Foundation gives permission
* for additional uses of the text contained in its release of this library.
*
* The exception is that, if you link this 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 this 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
* Free Software Foundation as part of this library. If you copy
* code from other releases distributed under the terms of the GPL into a copy of
* this library, 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 such code.
*
* If you write modifications of your own for this library, 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 "weaks.h"
/* {Weak Vectors}
*/
SCM_PROC(s_make_weak_vector, "make-weak-vector", 1, 1, 0, scm_make_weak_vector);
SCM
scm_make_weak_vector (k, fill)
SCM k;
SCM fill;
{
SCM v;
v = scm_make_vector (scm_sum (k, SCM_MAKINUM (1)), fill);
SCM_DEFER_INTS;
SCM_SETLENGTH(v, SCM_INUM (k), scm_tc7_wvect);
SCM_VELTS(v)[0] = (SCM)0;
SCM_SETVELTS(v, SCM_VELTS(v) + 1);
SCM_ALLOW_INTS;
return v;
}
SCM_PROC(s_weak_vector, "weak-vector", 0, 0, 1, scm_weak_vector);
SCM_PROC(s_list_to_weak_vector, "list->weak-vector", 1, 0, 0, scm_weak_vector);
SCM
scm_weak_vector (l)
SCM l;
{
SCM res;
register SCM *data;
long i;
i = scm_ilength (l);
SCM_ASSERT (i >= 0, l, SCM_ARG1, s_weak_vector);
res = scm_make_weak_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED);
data = SCM_VELTS (res);
for (;
i && SCM_NIMP (l) && SCM_CONSP (l);
--i, l = SCM_CDR (l))
*data++ = SCM_CAR (l);
return res;
}
SCM_PROC(s_weak_vector_p, "weak-vector?", 1, 0, 0, scm_weak_vector_p);
SCM
scm_weak_vector_p (x)
SCM x;
{
return ((SCM_NIMP (x) && SCM_WVECTP (x) && !SCM_IS_WHVEC (x))
? SCM_BOOL_T
: SCM_BOOL_F);
}
SCM_PROC(s_make_weak_key_hash_table, "make-weak-key-hash-table", 1, 0, 0, scm_make_weak_key_hash_table);
SCM
scm_make_weak_key_hash_table (k)
SCM k;
{
SCM v;
SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_key_hash_table);
v = scm_make_weak_vector (k, SCM_EOL);
SCM_ALLOW_INTS;
SCM_VELTS (v)[-1] = 1;
SCM_ALLOW_INTS;
return v;
}
SCM_PROC (s_make_weak_value_hash_table, "make-weak-value-hash-table", 1, 0, 0, scm_make_weak_value_hash_table);
SCM
scm_make_weak_value_hash_table (k)
SCM k;
{
SCM v;
SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_value_hash_table);
v = scm_make_weak_vector (k, SCM_EOL);
SCM_ALLOW_INTS;
SCM_VELTS (v)[-1] = 2;
SCM_ALLOW_INTS;
return v;
}
SCM_PROC (s_make_doubly_weak_hash_table, "make-doubly-weak-hash-table", 1, 0, 0, scm_make_doubly_weak_hash_table);
SCM
scm_make_doubly_weak_hash_table (k)
SCM k;
{
SCM v;
SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_doubly_weak_hash_table);
v = scm_make_weak_vector (k, SCM_EOL);
SCM_ALLOW_INTS;
SCM_VELTS (v)[-1] = 3;
SCM_ALLOW_INTS;
return v;
}
SCM_PROC(s_weak_key_hash_table_p, "weak-key-hash-table?", 1, 0, 0, scm_weak_key_hash_table_p);
SCM
scm_weak_key_hash_table_p (x)
SCM x;
{
return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC(x))
? SCM_BOOL_T
: SCM_BOOL_F);
}
SCM_PROC (s_weak_value_hash_table_p, "weak-value-hash-table?", 1, 0, 0, scm_weak_value_hash_table_p);
SCM
scm_weak_value_hash_table_p (x)
SCM x;
{
return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_V(x))
? SCM_BOOL_T
: SCM_BOOL_F);
}
SCM_PROC (s_doubly_weak_hash_table_p, "doubly-weak-hash-table?", 1, 0, 0, scm_doubly_weak_hash_table_p);
SCM
scm_doubly_weak_hash_table_p (x)
SCM x;
{
return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_B (x))
? SCM_BOOL_T
: SCM_BOOL_F);
}
void
scm_init_weaks ()
{
#include "weaks.x"
}
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