/* classes: h_files */
-#ifndef SMOBH
-#define SMOBH
-/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
- *
+#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, 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
*
* 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.
- */
+ * If you do not wish that, delete this exception notice. */
+
\f
+
#include "libguile/__scm.h"
+#include "libguile/print.h"
\f
-typedef struct scm_smobfuns
+/* This is the internal representation of a smob type */
+
+typedef struct scm_smob_descriptor
{
- SCM (*mark) SCM_P ((SCM));
- scm_sizet (*free) SCM_P ((SCM));
- int (*print) SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
- SCM (*equalp) SCM_P ((SCM, SCM));
-} scm_smobfuns;
+ 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;
\f
-#define SCM_SMOBNUM(x) (0x0ff & (SCM_CAR(x)>>8));
-#define SCM_PTOBNUM(x) (0x0ff & (SCM_CAR(x)>>8));
+#define SCM_NEWSMOB(z, tc, data) \
+do { \
+ z = scm_cell ((tc), (scm_t_bits) (data)); \
+} while (0)
-extern scm_sizet scm_numsmob;
-extern scm_smobfuns *scm_smobs;
+#define SCM_RETURN_NEWSMOB(tc, data) \
+ do { SCM __SCM_smob_answer; \
+ SCM_NEWSMOB (__SCM_smob_answer, (tc), (data)); \
+ return __SCM_smob_answer; \
+ } while (0)
-\f
+#define SCM_NEWSMOB2(z, tc, data1, data2) \
+do { \
+ z = scm_double_cell ((tc), (scm_t_bits)(data1), (scm_t_bits)(data2), 0); \
+} 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 { \
+ z = scm_double_cell ((tc), (scm_t_bits)(data1), \
+ (scm_t_bits)(data2), (scm_t_bits)(data3)); \
+} while (0)
-/* Everyone who uses smobs needs to print. */
-#include "libguile/ports.h"
-#include "libguile/genio.h"
+#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)
-/* ... and they all need to GC. */
-#include "libguile/markers.h"
+
+#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)))
+
+SCM_API long scm_numsmob;
+SCM_API scm_smob_descriptor scm_smobs[];
\f
-extern long scm_newsmob SCM_P ((scm_smobfuns *smob));
-extern void scm_smob_prehistory SCM_P ((void));
-#endif /* SMOBH */
+SCM_API SCM scm_mark0 (SCM ptr);
+SCM_API SCM scm_markcdr (SCM ptr);
+SCM_API size_t scm_free0 (SCM ptr);
+SCM_API size_t scm_smob_free (SCM obj);
+SCM_API 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'.
+ */
+
+SCM_API scm_t_bits scm_make_smob_type (char *name, size_t size);
+
+SCM_API void scm_set_smob_mark (scm_t_bits tc, SCM (*mark) (SCM));
+SCM_API void scm_set_smob_free (scm_t_bits tc, size_t (*free) (SCM));
+SCM_API void scm_set_smob_print (scm_t_bits tc,
+ int (*print) (SCM, SCM, scm_print_state*));
+SCM_API void scm_set_smob_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM));
+SCM_API void scm_set_smob_apply (scm_t_bits tc,
+ SCM (*apply) (),
+ unsigned int req,
+ unsigned int opt,
+ unsigned int rst);
+
+/* Function for creating smobs */
+
+SCM_API SCM scm_make_smob (scm_t_bits tc);
+SCM_API void scm_smob_prehistory (void);
+
+#endif /* SCM_SMOB_H */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff