mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 11:50:28 +02:00
552 lines
14 KiB
C
552 lines
14 KiB
C
/* Copyright (C) 1995, 1996, 1998, 1999, 2000 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. */
|
||
|
||
/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
|
||
gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
|
||
|
||
|
||
|
||
#include <stdio.h>
|
||
#include "libguile/_scm.h"
|
||
|
||
#include "libguile/objects.h"
|
||
#include "libguile/ports.h"
|
||
|
||
#ifdef HAVE_MALLOC_H
|
||
#include <malloc.h>
|
||
#endif
|
||
|
||
#include "libguile/smob.h"
|
||
|
||
|
||
|
||
/* 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).
|
||
*/
|
||
int scm_numsmob;
|
||
scm_smob_descriptor *scm_smobs;
|
||
|
||
/* {Mark}
|
||
*/
|
||
|
||
/* This function is vestigial. It used to be the mark function's
|
||
responsibility to set the mark bit on the smob or port, but now the
|
||
generic marking routine in gc.c takes care of that, and a zero
|
||
pointer for a mark function means "don't bother". So you never
|
||
need scm_mark0.
|
||
|
||
However, we leave it here because it's harmless to call it, and
|
||
people out there have smob code that uses it, and there's no reason
|
||
to make their links fail. */
|
||
|
||
SCM
|
||
scm_mark0 (SCM ptr)
|
||
{
|
||
return SCM_BOOL_F;
|
||
}
|
||
|
||
SCM
|
||
scm_markcdr (SCM ptr)
|
||
{
|
||
return SCM_CDR (ptr);
|
||
}
|
||
|
||
/* {Free}
|
||
*/
|
||
|
||
scm_sizet
|
||
scm_free0 (SCM ptr)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
scm_sizet
|
||
scm_smob_free (SCM obj)
|
||
{
|
||
scm_must_free ((char *) SCM_CELL_WORD_1 (obj));
|
||
return scm_smobs[SCM_SMOBNUM (obj)].size;
|
||
}
|
||
|
||
/* {Print}
|
||
*/
|
||
|
||
int
|
||
scm_smob_print (SCM exp, SCM port, scm_print_state *pstate)
|
||
{
|
||
int n = SCM_SMOBNUM (exp);
|
||
scm_puts ("#<", port);
|
||
scm_puts (SCM_SMOBNAME (n) ? SCM_SMOBNAME (n) : "smob", port);
|
||
scm_putc (' ', port);
|
||
scm_intprint (SCM_UNPACK (scm_smobs[n].size ? SCM_CDR (exp) : exp), 16, port);
|
||
scm_putc ('>', port);
|
||
return 1;
|
||
}
|
||
|
||
/* {Apply}
|
||
*/
|
||
|
||
#define SCM_SMOB_APPLY0(SMOB) \
|
||
SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB)
|
||
#define SCM_SMOB_APPLY1(SMOB,A1) \
|
||
SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1)
|
||
#define SCM_SMOB_APPLY2(SMOB,A1,A2) \
|
||
SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1, A2)
|
||
#define SCM_SMOB_APPLY3(SMOB,A1,A2,A3) \
|
||
SCM_SMOB_DESCRIPTOR (SMOB).apply (SMOB, A1, A2, A3)
|
||
|
||
static SCM
|
||
scm_smob_apply_0_010 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY1 (smob, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_020 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, SCM_UNDEFINED, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_030 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, SCM_UNDEFINED, SCM_UNDEFINED, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_001 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY1 (smob, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_011 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, SCM_UNDEFINED, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_021 (SCM smob)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, SCM_UNDEFINED, SCM_UNDEFINED, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_0_error (SCM smob)
|
||
{
|
||
scm_wrong_num_args (smob);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_020 (SCM smob, SCM a1)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, a1, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_030 (SCM smob, SCM a1)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, a1, SCM_UNDEFINED, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_001 (SCM smob, SCM a1)
|
||
{
|
||
return SCM_SMOB_APPLY1 (smob, SCM_LIST1 (a1));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_011 (SCM smob, SCM a1)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, a1, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_021 (SCM smob, SCM a1)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, a1, SCM_UNDEFINED, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_1_error (SCM smob, SCM a1)
|
||
{
|
||
scm_wrong_num_args (smob);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_2_030 (SCM smob, SCM a1, SCM a2)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_UNDEFINED);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_2_001 (SCM smob, SCM a1, SCM a2)
|
||
{
|
||
return SCM_SMOB_APPLY1 (smob, SCM_LIST2 (a1, a2));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_2_011 (SCM smob, SCM a1, SCM a2)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, a1, SCM_LIST1 (a2));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_2_021 (SCM smob, SCM a1, SCM a2)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_EOL);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_2_error (SCM smob, SCM a1, SCM a2)
|
||
{
|
||
scm_wrong_num_args (smob);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_3_030 (SCM smob, SCM a1, SCM a2, SCM rst)
|
||
{
|
||
if (!SCM_NULLP (SCM_CDR (rst)))
|
||
scm_wrong_num_args (smob);
|
||
return SCM_SMOB_APPLY3 (smob, a1, a2, SCM_CAR (rst));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_3_001 (SCM smob, SCM a1, SCM a2, SCM rst)
|
||
{
|
||
return SCM_SMOB_APPLY1 (smob, scm_cons2 (a1, a2, rst));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_3_011 (SCM smob, SCM a1, SCM a2, SCM rst)
|
||
{
|
||
return SCM_SMOB_APPLY2 (smob, a1, scm_cons (a2, rst));
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_3_021 (SCM smob, SCM a1, SCM a2, SCM rst)
|
||
{
|
||
return SCM_SMOB_APPLY3 (smob, a1, a2, rst);
|
||
}
|
||
|
||
static SCM
|
||
scm_smob_apply_3_error (SCM smob, SCM a1, SCM a2, SCM rst)
|
||
{
|
||
scm_wrong_num_args (smob);
|
||
}
|
||
|
||
|
||
long
|
||
scm_make_smob_type (char *name, scm_sizet size)
|
||
{
|
||
char *tmp;
|
||
if (255 <= scm_numsmob)
|
||
goto smoberr;
|
||
SCM_DEFER_INTS;
|
||
SCM_SYSCALL (tmp = (char *) realloc ((char *) scm_smobs,
|
||
(1 + scm_numsmob)
|
||
* sizeof (scm_smob_descriptor)));
|
||
if (tmp)
|
||
{
|
||
scm_smobs = (scm_smob_descriptor *) tmp;
|
||
scm_smobs[scm_numsmob].name = name;
|
||
scm_smobs[scm_numsmob].size = size;
|
||
scm_smobs[scm_numsmob].mark = 0;
|
||
scm_smobs[scm_numsmob].free = (size == 0 ? scm_free0 : scm_smob_free);
|
||
scm_smobs[scm_numsmob].print = scm_smob_print;
|
||
scm_smobs[scm_numsmob].equalp = 0;
|
||
scm_smobs[scm_numsmob].apply = 0;
|
||
scm_smobs[scm_numsmob].apply_0 = 0;
|
||
scm_smobs[scm_numsmob].apply_1 = 0;
|
||
scm_smobs[scm_numsmob].apply_2 = 0;
|
||
scm_smobs[scm_numsmob].apply_3 = 0;
|
||
scm_smobs[scm_numsmob].gsubr_type = 0;
|
||
scm_numsmob++;
|
||
}
|
||
SCM_ALLOW_INTS;
|
||
if (!tmp)
|
||
{
|
||
smoberr:
|
||
scm_memory_error ("scm_make_smob_type");
|
||
}
|
||
/* Make a class object if Goops is present. */
|
||
if (scm_smob_class)
|
||
scm_smob_class[scm_numsmob - 1]
|
||
= scm_make_extended_class (SCM_SMOBNAME (scm_numsmob - 1));
|
||
return scm_tc7_smob + (scm_numsmob - 1) * 256;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_mark (long tc, SCM (*mark) (SCM))
|
||
{
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].mark = mark;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_free (long tc, scm_sizet (*free) (SCM))
|
||
{
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].free = free;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_print (long tc, int (*print) (SCM, SCM, scm_print_state*))
|
||
{
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].print = print;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_equalp (long tc, SCM (*equalp) (SCM, SCM))
|
||
{
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].equalp = equalp;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_apply (long tc, SCM (*apply) (),
|
||
unsigned int req, unsigned int opt, unsigned int rst)
|
||
{
|
||
SCM (*apply_0) (SCM);
|
||
SCM (*apply_1) (SCM, SCM);
|
||
SCM (*apply_2) (SCM, SCM, SCM);
|
||
SCM (*apply_3) (SCM, SCM, SCM, SCM);
|
||
int type = SCM_GSUBR_MAKTYPE (req, opt, rst);
|
||
|
||
if (rst > 1 || req + opt + rst > 3)
|
||
{
|
||
puts ("Unsupported smob application type");
|
||
abort ();
|
||
}
|
||
|
||
switch (type)
|
||
{
|
||
case SCM_GSUBR_MAKTYPE (0, 0, 0):
|
||
apply_0 = apply; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 0):
|
||
apply_0 = scm_smob_apply_0_010; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 0):
|
||
apply_0 = scm_smob_apply_0_020; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 3, 0):
|
||
apply_0 = scm_smob_apply_0_030; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 0, 1):
|
||
apply_0 = scm_smob_apply_0_001; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 1):
|
||
apply_0 = scm_smob_apply_0_011; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 1):
|
||
apply_0 = scm_smob_apply_0_021; break;
|
||
default:
|
||
apply_0 = scm_smob_apply_0_error; break;
|
||
}
|
||
|
||
switch (type)
|
||
{
|
||
case SCM_GSUBR_MAKTYPE (1, 0, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 0):
|
||
apply_1 = apply; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 1, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 0):
|
||
apply_1 = scm_smob_apply_1_020; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 2, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 3, 0):
|
||
apply_1 = scm_smob_apply_1_030; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 0, 1):
|
||
apply_1 = scm_smob_apply_1_001; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 0, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 1):
|
||
apply_1 = scm_smob_apply_1_011; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 1, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 1):
|
||
apply_1 = scm_smob_apply_1_021; break;
|
||
default:
|
||
apply_1 = scm_smob_apply_1_error; break;
|
||
}
|
||
|
||
switch (type)
|
||
{
|
||
case SCM_GSUBR_MAKTYPE (2, 0, 0):
|
||
case SCM_GSUBR_MAKTYPE (1, 1, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 0):
|
||
apply_2 = apply; break;
|
||
case SCM_GSUBR_MAKTYPE (2, 1, 0):
|
||
case SCM_GSUBR_MAKTYPE (1, 2, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 3, 0):
|
||
apply_2 = scm_smob_apply_2_030; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 0, 1):
|
||
apply_2 = scm_smob_apply_2_001; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 0, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 1):
|
||
apply_2 = scm_smob_apply_2_011; break;
|
||
case SCM_GSUBR_MAKTYPE (2, 0, 1):
|
||
case SCM_GSUBR_MAKTYPE (1, 1, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 1):
|
||
apply_2 = scm_smob_apply_2_021; break;
|
||
default:
|
||
apply_2 = scm_smob_apply_2_error; break;
|
||
}
|
||
|
||
switch (type)
|
||
{
|
||
case SCM_GSUBR_MAKTYPE (3, 0, 0):
|
||
case SCM_GSUBR_MAKTYPE (2, 1, 0):
|
||
case SCM_GSUBR_MAKTYPE (1, 2, 0):
|
||
case SCM_GSUBR_MAKTYPE (0, 3, 0):
|
||
apply_3 = scm_smob_apply_3_030; break;
|
||
case SCM_GSUBR_MAKTYPE (0, 0, 1):
|
||
apply_3 = scm_smob_apply_3_001; break;
|
||
case SCM_GSUBR_MAKTYPE (1, 0, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 1, 1):
|
||
apply_3 = scm_smob_apply_3_011; break;
|
||
case SCM_GSUBR_MAKTYPE (2, 0, 1):
|
||
case SCM_GSUBR_MAKTYPE (1, 1, 1):
|
||
case SCM_GSUBR_MAKTYPE (0, 2, 1):
|
||
apply_3 = scm_smob_apply_3_021; break;
|
||
default:
|
||
apply_3 = scm_smob_apply_3_error; break;
|
||
}
|
||
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].apply = apply;
|
||
scm_smobs[SCM_TC2SMOBNUM (tc)].apply_0 = apply_0;
|
||
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 (long tc)
|
||
{
|
||
int n = SCM_TC2SMOBNUM (tc);
|
||
scm_sizet size = scm_smobs[n].size;
|
||
SCM z;
|
||
SCM_NEWCELL (z);
|
||
if (size != 0)
|
||
{
|
||
#if 0
|
||
SCM_ASSERT (scm_smobs[n].mark == 0,
|
||
0,
|
||
"forbidden operation for smobs with GC data, use SCM_NEWSMOB",
|
||
SCM_SMOBNAME (n));
|
||
#endif
|
||
SCM_SET_SMOB_DATA (z, scm_must_malloc (size, SCM_SMOBNAME (n)));
|
||
}
|
||
SCM_SET_CELL_TYPE (z, tc);
|
||
return z;
|
||
}
|
||
|
||
|
||
/* {Deprecated stuff}
|
||
*/
|
||
|
||
#if (SCM_DEBUG_DEPRECATED == 0)
|
||
|
||
long
|
||
scm_make_smob_type_mfpe (char *name, scm_sizet size,
|
||
SCM (*mark) (SCM),
|
||
scm_sizet (*free) (SCM),
|
||
int (*print) (SCM, SCM, scm_print_state *),
|
||
SCM (*equalp) (SCM, SCM))
|
||
{
|
||
long answer = scm_make_smob_type (name, size);
|
||
scm_set_smob_mfpe (answer, mark, free, print, equalp);
|
||
return answer;
|
||
}
|
||
|
||
void
|
||
scm_set_smob_mfpe (long tc,
|
||
SCM (*mark) (SCM),
|
||
scm_sizet (*free) (SCM),
|
||
int (*print) (SCM, SCM, scm_print_state *),
|
||
SCM (*equalp) (SCM, SCM))
|
||
{
|
||
if (mark) scm_set_smob_mark (tc, mark);
|
||
if (free) scm_set_smob_free (tc, free);
|
||
if (print) scm_set_smob_print (tc, print);
|
||
if (equalp) scm_set_smob_equalp (tc, equalp);
|
||
}
|
||
|
||
#endif /* SCM_DEBUG_DEPRECATED == 0 */
|
||
|
||
|
||
/* {Initialization for i/o types, float, bignum, the type of free cells}
|
||
*/
|
||
|
||
static int
|
||
free_print (SCM exp, SCM port, scm_print_state *pstate)
|
||
{
|
||
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 ()
|
||
{
|
||
scm_bits_t tc;
|
||
|
||
scm_numsmob = 0;
|
||
scm_smobs = ((scm_smob_descriptor *)
|
||
malloc (7 * sizeof (scm_smob_descriptor)));
|
||
|
||
/* 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:
|
||
*/
|