1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* 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 scm_bits_t 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_bits_t scm_make_smob_type (char *name, size_t size);
extern void scm_set_smob_mark (scm_bits_t tc, SCM (*mark) (SCM));
extern void scm_set_smob_free (scm_bits_t tc, size_t (*free) (SCM));
extern void scm_set_smob_print (scm_bits_t tc,
int (*print) (SCM, SCM, scm_print_state*));
extern void scm_set_smob_equalp (scm_bits_t tc, SCM (*equalp) (SCM, SCM));
extern void scm_set_smob_apply (scm_bits_t tc,
SCM (*apply) (),
unsigned int req,
unsigned int opt,
unsigned int rst);
/* Function for creating smobs */
extern SCM scm_make_smob (scm_bits_t 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:
*/
|
