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/* classes: h_files */
#ifndef SCM_SMOB_H
#define SCM_SMOB_H
/* Copyright (C) 1995,1996,1998,1999,2000,2001 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. */
#include "libguile/__scm.h"
#include "libguile/print.h"
/* This is the internal representation of a smob type */
typedef struct scm_smob_descriptor
{
char *name;
size_t size;
SCM (*mark) (SCM);
size_t (*free) (SCM);
int (*print) (SCM exp, SCM port, scm_print_state *pstate);
SCM (*equalp) (SCM, SCM);
SCM (*apply) ();
SCM (*apply_0) (SCM);
SCM (*apply_1) (SCM, SCM);
SCM (*apply_2) (SCM, SCM, SCM);
SCM (*apply_3) (SCM, SCM, SCM, SCM);
int gsubr_type; /* Used in procprop.c */
} scm_smob_descriptor;
#define SCM_NEWSMOB(z, tc, data) \
do { \
SCM_NEWCELL (z); \
SCM_SET_CELL_WORD_1 ((z), (data)); \
SCM_SET_CELL_TYPE ((z), (tc)); \
} while (0)
#define SCM_RETURN_NEWSMOB(tc, data) \
do { SCM __SCM_smob_answer; \
SCM_NEWSMOB (__SCM_smob_answer, (tc), (data)); \
return __SCM_smob_answer; \
} while (0)
#define SCM_NEWSMOB2(z, tc, data1, data2) \
do { \
SCM_NEWCELL2 (z); \
SCM_SET_CELL_WORD_1 ((z), (data1)); \
SCM_SET_CELL_WORD_2 ((z), (data2)); \
SCM_SET_CELL_TYPE ((z), (tc)); \
} while (0)
#define SCM_RETURN_NEWSMOB2(tc, data1, data2) \
do { SCM __SCM_smob_answer; \
SCM_NEWSMOB2 (__SCM_smob_answer, (tc), (data1), (data2)); \
return __SCM_smob_answer; \
} while (0)
#define SCM_NEWSMOB3(z, tc, data1, data2, data3) \
do { \
SCM_NEWCELL2 (z); \
SCM_SET_CELL_WORD_1 ((z), (data1)); \
SCM_SET_CELL_WORD_2 ((z), (data2)); \
SCM_SET_CELL_WORD_3 ((z), (data3)); \
SCM_SET_CELL_TYPE ((z), (tc)); \
} while (0)
#define SCM_RETURN_NEWSMOB3(tc, data1, data2, data3) \
do { SCM __SCM_smob_answer; \
SCM_NEWSMOB3 (__SCM_smob_answer, (tc), (data1), (data2), (data3)); \
return __SCM_smob_answer; \
} while (0)
#define SCM_SMOB_DATA(x) (SCM_CELL_WORD_1 (x))
#define SCM_SET_SMOB_DATA(x, data) (SCM_SET_CELL_WORD_1 ((x), (data)))
#define SCM_TC2SMOBNUM(x) (0x0ff & ((x) >> 8))
#define SCM_SMOBNUM(x) (SCM_TC2SMOBNUM (SCM_CELL_TYPE (x)))
/* SCM_SMOBNAME can be 0 if name is missing */
#define SCM_SMOBNAME(smobnum) (scm_smobs[smobnum].name)
#define SCM_SMOB_PREDICATE(tag, obj) SCM_TYP16_PREDICATE (tag, obj)
#define SCM_SMOB_DESCRIPTOR(x) (scm_smobs[SCM_SMOBNUM (x)])
#define SCM_SMOB_APPLICABLE_P(x) (SCM_SMOB_DESCRIPTOR (x).apply)
#define SCM_SMOB_APPLY_0(x) (SCM_SMOB_DESCRIPTOR (x).apply_0 (x))
#define SCM_SMOB_APPLY_1(x,a1) (SCM_SMOB_DESCRIPTOR (x).apply_1 (x, (a1)))
#define SCM_SMOB_APPLY_2(x,a1,a2) (SCM_SMOB_DESCRIPTOR (x).apply_2 (x, (a1), (a2)))
#define SCM_SMOB_APPLY_3(x,a1,a2,rst) (SCM_SMOB_DESCRIPTOR (x).apply_3 (x, (a1), (a2), (rst)))
extern long scm_numsmob;
extern scm_smob_descriptor scm_smobs[];
extern SCM scm_mark0 (SCM ptr);
extern SCM scm_markcdr (SCM ptr);
extern size_t scm_free0 (SCM ptr);
extern size_t scm_smob_free (SCM obj);
extern int scm_smob_print (SCM exp, SCM port, scm_print_state *pstate);
/* The following set of functions is the standard way to create new
* SMOB types.
*
* Create a type tag using `scm_make_smob_type', accept default values
* for mark, free, print and/or equalp functions, or set your own
* values using `scm_set_smob_xxx'.
*/
extern scm_t_bits scm_make_smob_type (char *name, size_t size);
extern void scm_set_smob_mark (scm_t_bits tc, SCM (*mark) (SCM));
extern void scm_set_smob_free (scm_t_bits tc, size_t (*free) (SCM));
extern void scm_set_smob_print (scm_t_bits tc,
int (*print) (SCM, SCM, scm_print_state*));
extern void scm_set_smob_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM));
extern void scm_set_smob_apply (scm_t_bits tc,
SCM (*apply) (),
unsigned int req,
unsigned int opt,
unsigned int rst);
/* Function for creating smobs */
extern SCM scm_make_smob (scm_t_bits tc);
extern void scm_smob_prehistory (void);
#if (SCM_DEBUG_DEPRECATED == 0)
extern long scm_make_smob_type_mfpe (char *name, size_t size,
SCM (*mark) (SCM),
size_t (*free) (SCM),
int (*print) (SCM, SCM, scm_print_state*),
SCM (*equalp) (SCM, SCM));
extern void scm_set_smob_mfpe (long tc,
SCM (*mark) (SCM),
size_t (*free) (SCM),
int (*print) (SCM, SCM, scm_print_state*),
SCM (*equalp) (SCM, SCM));
#endif /* SCM_DEBUG_DEPRECATED == 0 */
#endif /* SCM_SMOB_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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