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34d19ef643
* *.c: add space after commas everywhere. * *.c: use SCM_VECTOR_SET everywhere, where a vector is written. Document cases where SCM_WRITABLE_VELTS() is used. * vectors.h (SCM_VELTS): prepare for write barrier, and let SCM_VELTS() return a const pointer (SCM_VECTOR_SET): add macro. * autogen.sh (mscripts): find and check version number of autoconf. Complain if 2.53 is not found.
528 lines
13 KiB
C
528 lines
13 KiB
C
/* Copyright (C) 1995,1996,1998,1999,2000,2001 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 <errno.h>
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#include "libguile/_scm.h"
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#include "libguile/objects.h"
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#include "libguile/ports.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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#include "libguile/smob.h"
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/* scm_smobs scm_numsmob
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* implement a fixed sized 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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#define MAX_SMOB_COUNT 256
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long scm_numsmob;
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scm_smob_descriptor scm_smobs[MAX_SMOB_COUNT];
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/* {Mark}
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*/
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/* This function is vestigial. It used to be the mark function's
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responsibility to set the mark bit on the smob or port, but now the
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generic marking routine in gc.c takes care of that, and a zero
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pointer for a mark function means "don't bother". So you never
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need scm_mark0.
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However, we leave it here because it's harmless to call it, and
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people out there have smob code that uses it, and there's no reason
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to make their links fail. */
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SCM
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scm_mark0 (SCM ptr SCM_UNUSED)
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{
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return SCM_BOOL_F;
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}
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SCM
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/* Dirk::FIXME: The name markcdr is misleading, since the term cdr should only
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be used for real pairs. */
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scm_markcdr (SCM ptr)
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{
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return SCM_CELL_OBJECT_1 (ptr);
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}
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/* {Free}
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*/
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size_t
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scm_free0 (SCM ptr SCM_UNUSED)
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{
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return 0;
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}
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size_t
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scm_smob_free (SCM obj)
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{
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long n = SCM_SMOBNUM (obj);
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if (scm_smobs[n].size > 0)
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scm_gc_free ((void *) SCM_CELL_WORD_1 (obj),
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scm_smobs[n].size, SCM_SMOBNAME (n));
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return 0;
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}
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/* {Print}
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*/
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int
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scm_smob_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
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{
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long n = SCM_SMOBNUM (exp);
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scm_puts ("#<", port);
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scm_puts (SCM_SMOBNAME (n) ? SCM_SMOBNAME (n) : "smob", port);
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scm_putc (' ', port);
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if (scm_smobs[n].size)
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scm_intprint (SCM_CELL_WORD_1 (exp), 16, port);
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else
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scm_intprint (SCM_UNPACK (exp), 16, port);
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scm_putc ('>', port);
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return 1;
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}
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/* {Apply}
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*/
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#define SCM_SMOB_APPLY0(SMOB) \
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SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB)
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#define SCM_SMOB_APPLY1(SMOB, A1) \
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SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1)
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#define SCM_SMOB_APPLY2(SMOB, A1, A2) \
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SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1, A2)
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#define SCM_SMOB_APPLY3(SMOB, A1, A2, A3) \
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SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1, A2, A3)
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static SCM
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scm_smob_apply_0_010 (SCM smob)
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{
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return SCM_SMOB_APPLY1 (smob, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_0_020 (SCM smob)
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{
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return SCM_SMOB_APPLY2 (smob, SCM_UNDEFINED, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_0_030 (SCM smob)
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{
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return SCM_SMOB_APPLY3 (smob, SCM_UNDEFINED, SCM_UNDEFINED, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_0_001 (SCM smob)
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{
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return SCM_SMOB_APPLY1 (smob, SCM_EOL);
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}
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static SCM
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scm_smob_apply_0_011 (SCM smob)
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{
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return SCM_SMOB_APPLY2 (smob, SCM_UNDEFINED, SCM_EOL);
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}
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static SCM
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scm_smob_apply_0_021 (SCM smob)
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{
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return SCM_SMOB_APPLY3 (smob, SCM_UNDEFINED, SCM_UNDEFINED, SCM_EOL);
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}
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static SCM
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scm_smob_apply_0_error (SCM smob)
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{
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scm_wrong_num_args (smob);
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}
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static SCM
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scm_smob_apply_1_020 (SCM smob, SCM a1)
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{
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return SCM_SMOB_APPLY2 (smob, a1, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_1_030 (SCM smob, SCM a1)
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{
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return SCM_SMOB_APPLY3 (smob, a1, SCM_UNDEFINED, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_1_001 (SCM smob, SCM a1)
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{
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return SCM_SMOB_APPLY1 (smob, scm_list_1 (a1));
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}
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static SCM
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scm_smob_apply_1_011 (SCM smob, SCM a1)
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{
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return SCM_SMOB_APPLY2 (smob, a1, SCM_EOL);
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}
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static SCM
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scm_smob_apply_1_021 (SCM smob, SCM a1)
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{
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return SCM_SMOB_APPLY3 (smob, a1, SCM_UNDEFINED, SCM_EOL);
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}
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static SCM
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scm_smob_apply_1_error (SCM smob, SCM a1 SCM_UNUSED)
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{
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scm_wrong_num_args (smob);
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}
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static SCM
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scm_smob_apply_2_030 (SCM smob, SCM a1, SCM a2)
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{
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return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_UNDEFINED);
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}
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static SCM
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scm_smob_apply_2_001 (SCM smob, SCM a1, SCM a2)
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{
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return SCM_SMOB_APPLY1 (smob, scm_list_2 (a1, a2));
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}
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static SCM
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scm_smob_apply_2_011 (SCM smob, SCM a1, SCM a2)
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{
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return SCM_SMOB_APPLY2 (smob, a1, scm_list_1 (a2));
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}
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static SCM
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scm_smob_apply_2_021 (SCM smob, SCM a1, SCM a2)
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{
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return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_EOL);
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}
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static SCM
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scm_smob_apply_2_error (SCM smob, SCM a1 SCM_UNUSED, SCM a2 SCM_UNUSED)
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{
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scm_wrong_num_args (smob);
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}
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static SCM
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scm_smob_apply_3_030 (SCM smob, SCM a1, SCM a2, SCM rst)
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{
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if (!SCM_NULLP (SCM_CDR (rst)))
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scm_wrong_num_args (smob);
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return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_CAR (rst));
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}
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static SCM
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scm_smob_apply_3_001 (SCM smob, SCM a1, SCM a2, SCM rst)
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{
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return SCM_SMOB_APPLY1 (smob, scm_cons2 (a1, a2, rst));
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}
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static SCM
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scm_smob_apply_3_011 (SCM smob, SCM a1, SCM a2, SCM rst)
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{
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return SCM_SMOB_APPLY2 (smob, a1, scm_cons (a2, rst));
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}
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static SCM
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scm_smob_apply_3_021 (SCM smob, SCM a1, SCM a2, SCM rst)
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{
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return SCM_SMOB_APPLY3 (smob, a1, a2, rst);
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}
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static SCM
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scm_smob_apply_3_error (SCM smob,
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SCM a1 SCM_UNUSED,
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SCM a2 SCM_UNUSED,
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SCM rst SCM_UNUSED)
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{
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scm_wrong_num_args (smob);
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}
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scm_t_bits
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scm_make_smob_type (char *name, size_t size)
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#define FUNC_NAME "scm_make_smob_type"
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{
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long new_smob;
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SCM_ENTER_A_SECTION; /* scm_numsmob */
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new_smob = scm_numsmob;
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if (scm_numsmob != MAX_SMOB_COUNT)
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++scm_numsmob;
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SCM_EXIT_A_SECTION;
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if (new_smob == MAX_SMOB_COUNT)
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scm_misc_error (FUNC_NAME, "maximum number of smobs exceeded", SCM_EOL);
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scm_smobs[new_smob].name = name;
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if (size != 0)
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{
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scm_smobs[new_smob].size = size;
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scm_smobs[new_smob].free = scm_smob_free;
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}
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/* Make a class object if Goops is present. */
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if (scm_smob_class)
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scm_smob_class[new_smob] = scm_make_extended_class (name);
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return scm_tc7_smob + new_smob * 256;
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}
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#undef FUNC_NAME
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void
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scm_set_smob_mark (scm_t_bits tc, SCM (*mark) (SCM))
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{
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scm_smobs[SCM_TC2SMOBNUM (tc)].mark = mark;
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}
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void
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scm_set_smob_free (scm_t_bits tc, size_t (*free) (SCM))
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{
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scm_smobs[SCM_TC2SMOBNUM (tc)].free = free;
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}
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void
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scm_set_smob_print (scm_t_bits tc, int (*print) (SCM, SCM, scm_print_state*))
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{
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scm_smobs[SCM_TC2SMOBNUM (tc)].print = print;
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}
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void
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scm_set_smob_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM))
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{
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scm_smobs[SCM_TC2SMOBNUM (tc)].equalp = equalp;
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}
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void
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scm_set_smob_apply (scm_t_bits tc, SCM (*apply) (),
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unsigned int req, unsigned int opt, unsigned int rst)
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{
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SCM (*apply_0) (SCM);
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SCM (*apply_1) (SCM, SCM);
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SCM (*apply_2) (SCM, SCM, SCM);
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SCM (*apply_3) (SCM, SCM, SCM, SCM);
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int type = SCM_GSUBR_MAKTYPE (req, opt, rst);
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if (rst > 1 || req + opt + rst > 3)
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{
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puts ("Unsupported smob application type");
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abort ();
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}
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switch (type)
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{
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case SCM_GSUBR_MAKTYPE (0, 0, 0):
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apply_0 = apply; break;
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case SCM_GSUBR_MAKTYPE (0, 1, 0):
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apply_0 = scm_smob_apply_0_010; break;
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case SCM_GSUBR_MAKTYPE (0, 2, 0):
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apply_0 = scm_smob_apply_0_020; break;
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case SCM_GSUBR_MAKTYPE (0, 3, 0):
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apply_0 = scm_smob_apply_0_030; break;
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case SCM_GSUBR_MAKTYPE (0, 0, 1):
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apply_0 = scm_smob_apply_0_001; break;
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case SCM_GSUBR_MAKTYPE (0, 1, 1):
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apply_0 = scm_smob_apply_0_011; break;
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case SCM_GSUBR_MAKTYPE (0, 2, 1):
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apply_0 = scm_smob_apply_0_021; break;
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default:
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apply_0 = scm_smob_apply_0_error; break;
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}
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switch (type)
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{
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case SCM_GSUBR_MAKTYPE (1, 0, 0):
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case SCM_GSUBR_MAKTYPE (0, 1, 0):
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apply_1 = apply; break;
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case SCM_GSUBR_MAKTYPE (1, 1, 0):
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case SCM_GSUBR_MAKTYPE (0, 2, 0):
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apply_1 = scm_smob_apply_1_020; break;
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case SCM_GSUBR_MAKTYPE (1, 2, 0):
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case SCM_GSUBR_MAKTYPE (0, 3, 0):
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apply_1 = scm_smob_apply_1_030; break;
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case SCM_GSUBR_MAKTYPE (0, 0, 1):
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apply_1 = scm_smob_apply_1_001; break;
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case SCM_GSUBR_MAKTYPE (1, 0, 1):
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case SCM_GSUBR_MAKTYPE (0, 1, 1):
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apply_1 = scm_smob_apply_1_011; break;
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case SCM_GSUBR_MAKTYPE (1, 1, 1):
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case SCM_GSUBR_MAKTYPE (0, 2, 1):
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apply_1 = scm_smob_apply_1_021; break;
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default:
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apply_1 = scm_smob_apply_1_error; break;
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}
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switch (type)
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{
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case SCM_GSUBR_MAKTYPE (2, 0, 0):
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case SCM_GSUBR_MAKTYPE (1, 1, 0):
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case SCM_GSUBR_MAKTYPE (0, 2, 0):
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apply_2 = apply; break;
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case SCM_GSUBR_MAKTYPE (2, 1, 0):
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case SCM_GSUBR_MAKTYPE (1, 2, 0):
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case SCM_GSUBR_MAKTYPE (0, 3, 0):
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apply_2 = scm_smob_apply_2_030; break;
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case SCM_GSUBR_MAKTYPE (0, 0, 1):
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apply_2 = scm_smob_apply_2_001; break;
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case SCM_GSUBR_MAKTYPE (1, 0, 1):
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case SCM_GSUBR_MAKTYPE (0, 1, 1):
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apply_2 = scm_smob_apply_2_011; break;
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case SCM_GSUBR_MAKTYPE (2, 0, 1):
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case SCM_GSUBR_MAKTYPE (1, 1, 1):
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case SCM_GSUBR_MAKTYPE (0, 2, 1):
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apply_2 = scm_smob_apply_2_021; break;
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default:
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apply_2 = scm_smob_apply_2_error; break;
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}
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switch (type)
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{
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case SCM_GSUBR_MAKTYPE (3, 0, 0):
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case SCM_GSUBR_MAKTYPE (2, 1, 0):
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case SCM_GSUBR_MAKTYPE (1, 2, 0):
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case SCM_GSUBR_MAKTYPE (0, 3, 0):
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apply_3 = scm_smob_apply_3_030; break;
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case SCM_GSUBR_MAKTYPE (0, 0, 1):
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apply_3 = scm_smob_apply_3_001; break;
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case SCM_GSUBR_MAKTYPE (1, 0, 1):
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case SCM_GSUBR_MAKTYPE (0, 1, 1):
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apply_3 = scm_smob_apply_3_011; break;
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case SCM_GSUBR_MAKTYPE (2, 0, 1):
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case SCM_GSUBR_MAKTYPE (1, 1, 1):
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case SCM_GSUBR_MAKTYPE (0, 2, 1):
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apply_3 = scm_smob_apply_3_021; break;
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default:
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apply_3 = scm_smob_apply_3_error; break;
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}
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scm_smobs[SCM_TC2SMOBNUM (tc)].apply = apply;
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scm_smobs[SCM_TC2SMOBNUM (tc)].apply_0 = apply_0;
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scm_smobs[SCM_TC2SMOBNUM (tc)].apply_1 = apply_1;
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].apply_2 = apply_2;
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].apply_3 = apply_3;
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].gsubr_type = type;
|
||
}
|
||
|
||
SCM
|
||
scm_make_smob (scm_t_bits tc)
|
||
{
|
||
long n = SCM_TC2SMOBNUM (tc);
|
||
size_t size = scm_smobs[n].size;
|
||
scm_t_bits data = (size > 0
|
||
? (scm_t_bits) scm_gc_malloc (size, SCM_SMOBNAME (n))
|
||
: 0);
|
||
return scm_cell (tc, data);
|
||
}
|
||
|
||
|
||
/* {Initialization for i/o types, float, bignum, the type of free cells}
|
||
*/
|
||
|
||
static int
|
||
free_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
|
||
{
|
||
char buf[100];
|
||
|
||
sprintf (buf, "#<freed cell %p; GC missed a reference>",
|
||
(void *) SCM_UNPACK (exp));
|
||
scm_puts (buf, port);
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
scm_smob_prehistory ()
|
||
{
|
||
long i;
|
||
scm_t_bits tc;
|
||
|
||
scm_numsmob = 0;
|
||
for (i = 0; i < MAX_SMOB_COUNT; ++i)
|
||
{
|
||
scm_smobs[i].name = 0;
|
||
scm_smobs[i].size = 0;
|
||
scm_smobs[i].mark = 0;
|
||
scm_smobs[i].free = 0;
|
||
scm_smobs[i].print = scm_smob_print;
|
||
scm_smobs[i].equalp = 0;
|
||
scm_smobs[i].apply = 0;
|
||
scm_smobs[i].apply_0 = 0;
|
||
scm_smobs[i].apply_1 = 0;
|
||
scm_smobs[i].apply_2 = 0;
|
||
scm_smobs[i].apply_3 = 0;
|
||
scm_smobs[i].gsubr_type = 0;
|
||
}
|
||
|
||
/* WARNING: These scm_make_smob_type calls must be done in this order */
|
||
tc = scm_make_smob_type ("free", 0);
|
||
scm_set_smob_print (tc, free_print);
|
||
|
||
tc = scm_make_smob_type ("big", 0); /* freed in gc */
|
||
scm_set_smob_print (tc, scm_bigprint);
|
||
scm_set_smob_equalp (tc, scm_bigequal);
|
||
|
||
tc = scm_make_smob_type ("real", 0); /* freed in gc */
|
||
scm_set_smob_print (tc, scm_print_real);
|
||
scm_set_smob_equalp (tc, scm_real_equalp);
|
||
|
||
tc = scm_make_smob_type ("complex", 0); /* freed in gc */
|
||
scm_set_smob_print (tc, scm_print_complex);
|
||
scm_set_smob_equalp (tc, scm_complex_equalp);
|
||
}
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|