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/* Copyright (C) 1995,1996 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, 675 Mass Ave, Cambridge, MA 02139, 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"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
/* scm_smobs scm_numsmob
* implement a dynamicly resized array of smob records.
* Indexes into this table are used when generating type
* tags for smobjects (if you know a tag you can get an index and conversely).
*/
scm_sizet scm_numsmob;
scm_smobfuns *scm_smobs;
#ifdef __STDC__
long
scm_newsmob (scm_smobfuns *smob)
#else
long
scm_newsmob (smob)
scm_smobfuns *smob;
#endif
{
char *tmp;
if (255 <= scm_numsmob)
goto smoberr;
SCM_DEFER_INTS;
SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_smobs, (1 + scm_numsmob) * sizeof (scm_smobfuns)));
if (tmp)
{
scm_smobs = (scm_smobfuns *) tmp;
scm_smobs[scm_numsmob].mark = smob->mark;
scm_smobs[scm_numsmob].free = smob->free;
scm_smobs[scm_numsmob].print = smob->print;
scm_smobs[scm_numsmob].equalp = smob->equalp;
scm_numsmob++;
}
SCM_ALLOW_INTS;
if (!tmp)
smoberr:scm_wta (SCM_MAKINUM ((long) scm_numsmob), (char *) SCM_NALLOC, "newsmob");
return scm_tc7_smob + (scm_numsmob - 1) * 256;
}
/* {Initialization for i/o types, float, bignum, the type of free cells}
*/
static scm_smobfuns freecell =
{
scm_mark0,
scm_free0,
0,
0
};
static scm_smobfuns flob =
{
scm_mark0,
/*flofree*/ 0,
scm_floprint,
scm_floequal
};
static scm_smobfuns bigob =
{
scm_mark0,
/*bigfree*/ 0,
scm_bigprint,
scm_bigequal
};
#ifdef __STDC__
void
scm_smob_prehistory (void)
#else
void
scm_smob_prehistory ()
#endif
{
scm_numsmob = 0;
scm_smobs = (scm_smobfuns *) malloc (7 * sizeof (scm_smobfuns));
/* WARNING: These scm_newsmob calls must be done in this order */
scm_newsmob (&freecell);
scm_newsmob (&flob);
scm_newsmob (&bigob);
scm_newsmob (&bigob); /* n.b.: two smobs, one smobfuns */
}
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