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129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include <stdio.h>
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#include "_scm.h"
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#include "smob.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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/* scm_smobs scm_numsmob
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* implement a dynamicly resized array of smob records.
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* Indexes into this table are used when generating type
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* tags for smobjects (if you know a tag you can get an index and conversely).
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*/
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scm_sizet scm_numsmob;
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scm_smobfuns *scm_smobs;
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long
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scm_newsmob (smob)
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scm_smobfuns *smob;
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{
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char *tmp;
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if (255 <= scm_numsmob)
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goto smoberr;
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SCM_DEFER_INTS;
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SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_smobs, (1 + scm_numsmob) * sizeof (scm_smobfuns)));
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if (tmp)
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{
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scm_smobs = (scm_smobfuns *) tmp;
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scm_smobs[scm_numsmob].mark = smob->mark;
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scm_smobs[scm_numsmob].free = smob->free;
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scm_smobs[scm_numsmob].print = smob->print;
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scm_smobs[scm_numsmob].equalp = smob->equalp;
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scm_numsmob++;
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}
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SCM_ALLOW_INTS;
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if (!tmp)
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smoberr:scm_wta (SCM_MAKINUM ((long) scm_numsmob), (char *) SCM_NALLOC, "newsmob");
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return scm_tc7_smob + (scm_numsmob - 1) * 256;
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}
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/* {Initialization for i/o types, float, bignum, the type of free cells}
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*/
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static scm_smobfuns freecell =
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{
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scm_mark0,
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scm_free0,
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0,
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0
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};
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static scm_smobfuns flob =
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{
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scm_mark0,
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/*flofree*/ 0,
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scm_floprint,
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scm_floequal
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};
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static scm_smobfuns bigob =
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{
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scm_mark0,
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/*bigfree*/ 0,
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scm_bigprint,
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scm_bigequal
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};
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void
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scm_smob_prehistory ()
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{
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scm_numsmob = 0;
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scm_smobs = (scm_smobfuns *) malloc (7 * sizeof (scm_smobfuns));
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/* WARNING: These scm_newsmob calls must be done in this order */
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scm_newsmob (&freecell);
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scm_newsmob (&flob);
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scm_newsmob (&bigob);
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scm_newsmob (&bigob); /* n.b.: two smobs, one smobfuns */
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}
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