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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
#ifndef SCM_SMOB_H
#define SCM_SMOB_H
/* Copyright 1995-1996,1998-2001,2004,2006,2009-2012,2015,2018
Free Software Foundation, Inc.
This file is part of Guile.
Guile is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Guile 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include <libguile/error.h>
#include <libguile/gc.h>
#include "libguile/inline.h"
#include "libguile/print.h"
#include <libguile/snarf.h>
/* This is the internal representation of a smob type */
typedef struct scm_smob_descriptor
{
char const *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_t_subr apply;
SCM apply_trampoline;
} scm_smob_descriptor;
#define SCM_SMOB_TYPE_MASK 0xffff
#define SCM_SMOB_TYPE_BITS(tc) (tc)
#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_HAS_TYP16 (obj, tag)
#define SCM_SMOB_DESCRIPTOR(x) (scm_smobs[SCM_SMOBNUM (x)])
#define SCM_SMOB_APPLICABLE_P(x) (SCM_SMOB_DESCRIPTOR (x).apply)
#define SCM_VALIDATE_SMOB(pos, obj, type) \
do { \
SCM_ASSERT (SCM_SMOB_PREDICATE (scm_tc16_ ## type, obj), \
obj, pos, FUNC_NAME); \
} while (0)
/* Maximum number of SMOB types. */
#define SCM_I_MAX_SMOB_TYPE_COUNT 256
SCM_API long scm_numsmob;
SCM_API scm_smob_descriptor scm_smobs[];
#define SCM_SMOB(tag, scheme_name, size) \
SCM_SNARF_HERE(static scm_t_bits tag) \
SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
#define SCM_GLOBAL_SMOB(tag, scheme_name, size) \
SCM_SNARF_HERE(scm_t_bits tag) \
SCM_SNARF_INIT((tag)=scm_make_smob_type((scheme_name), (size));)
#define SCM_SMOB_MARK(tag, c_name, arg) \
SCM_SNARF_HERE(static SCM c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
#define SCM_GLOBAL_SMOB_MARK(tag, c_name, arg) \
SCM_SNARF_HERE(SCM c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_mark((tag), (c_name));)
#define SCM_SMOB_FREE(tag, c_name, arg) \
SCM_SNARF_HERE(static size_t c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
#define SCM_GLOBAL_SMOB_FREE(tag, c_name, arg) \
SCM_SNARF_HERE(size_t c_name(SCM arg)) \
SCM_SNARF_INIT(scm_set_smob_free((tag), (c_name));)
#define SCM_SMOB_PRINT(tag, c_name, obj, port, pstate) \
SCM_SNARF_HERE(static int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
#define SCM_GLOBAL_SMOB_PRINT(tag, c_name, obj, port, pstate) \
SCM_SNARF_HERE(int c_name(SCM obj, SCM port, scm_print_state* pstate)) \
SCM_SNARF_INIT(scm_set_smob_print((tag), (c_name));)
#define SCM_SMOB_EQUALP(tag, c_name, obj1, obj2) \
SCM_SNARF_HERE(static SCM c_name(SCM obj1, SCM obj2)) \
SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
#define SCM_GLOBAL_SMOB_EQUALP(tag, c_name, obj1, obj2) \
SCM_SNARF_HERE(SCM c_name(SCM obj1, SCM obj2)) \
SCM_SNARF_INIT(scm_set_smob_equalp((tag), (c_name));)
#define SCM_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
SCM_SNARF_HERE(static SCM c_name arglist) \
SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
#define SCM_GLOBAL_SMOB_APPLY(tag, c_name, req, opt, rest, arglist) \
SCM_SNARF_HERE(SCM c_name arglist) \
SCM_SNARF_INIT(scm_set_smob_apply((tag), (c_name), (req), (opt), (rest));)
SCM_API SCM scm_i_new_smob (scm_t_bits tc, scm_t_bits);
SCM_API SCM scm_i_new_double_smob (scm_t_bits tc, scm_t_bits,
scm_t_bits, scm_t_bits);
SCM_INLINE SCM scm_new_smob (scm_t_bits tc, scm_t_bits);
SCM_INLINE SCM scm_new_double_smob (scm_t_bits tc, scm_t_bits,
scm_t_bits, scm_t_bits);
#if SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES
SCM_INLINE_IMPLEMENTATION SCM
scm_new_smob (scm_t_bits tc, scm_t_bits data)
{
scm_t_bits smobnum = SCM_TC2SMOBNUM (tc);
if (SCM_UNLIKELY (scm_smobs[smobnum].mark || scm_smobs[smobnum].free))
return scm_i_new_smob (tc, data);
else
return scm_cell (tc, data);
}
SCM_INLINE_IMPLEMENTATION SCM
scm_new_double_smob (scm_t_bits tc, scm_t_bits data1,
scm_t_bits data2, scm_t_bits data3)
{
scm_t_bits smobnum = SCM_TC2SMOBNUM (tc);
if (SCM_UNLIKELY (scm_smobs[smobnum].mark || scm_smobs[smobnum].free))
return scm_i_new_double_smob (tc, data1, data2, data3);
else
return scm_double_cell (tc, data1, data2, data3);
}
#endif
#define SCM_NEWSMOB(z, tc, data) \
z = scm_new_smob ((tc), (scm_t_bits)(data))
#define SCM_RETURN_NEWSMOB(tc, data) \
return scm_new_smob ((tc), (scm_t_bits)(data))
#define SCM_NEWSMOB2(z, tc, data1, data2) \
z = scm_new_double_smob ((tc), (scm_t_bits)(data1), \
(scm_t_bits)(data2), 0)
#define SCM_RETURN_NEWSMOB2(tc, data1, data2) \
return scm_new_double_smob ((tc), (scm_t_bits)(data1), \
(scm_t_bits)(data2), 0)
#define SCM_NEWSMOB3(z, tc, data1, data2, data3) \
z = scm_new_double_smob ((tc), (scm_t_bits)(data1), \
(scm_t_bits)(data2), (scm_t_bits)(data3))
#define SCM_RETURN_NEWSMOB3(tc, data1, data2, data3) \
return scm_new_double_smob ((tc), (scm_t_bits)(data1), \
(scm_t_bits)(data2), (scm_t_bits)(data3))
#define SCM_SMOB_DATA_N(x, n) (SCM_CELL_WORD ((x), (n)))
#define SCM_SET_SMOB_DATA_N(x, n, data) (SCM_SET_CELL_WORD ((x), (n), (data)))
#define SCM_SMOB_DATA_0(x) (SCM_SMOB_DATA_N ((x), 0))
#define SCM_SMOB_DATA_1(x) (SCM_SMOB_DATA_N ((x), 1))
#define SCM_SMOB_DATA_2(x) (SCM_SMOB_DATA_N ((x), 2))
#define SCM_SMOB_DATA_3(x) (SCM_SMOB_DATA_N ((x), 3))
#define SCM_SET_SMOB_DATA_0(x, data) (SCM_SET_SMOB_DATA_N ((x), 0, (data)))
#define SCM_SET_SMOB_DATA_1(x, data) (SCM_SET_SMOB_DATA_N ((x), 1, (data)))
#define SCM_SET_SMOB_DATA_2(x, data) (SCM_SET_SMOB_DATA_N ((x), 2, (data)))
#define SCM_SET_SMOB_DATA_3(x, data) (SCM_SET_SMOB_DATA_N ((x), 3, (data)))
#define SCM_SMOB_FLAGS(x) (SCM_SMOB_DATA_0 (x) >> 16)
#define SCM_SMOB_DATA(x) (SCM_SMOB_DATA_1 (x))
#define SCM_SET_SMOB_FLAGS(x, data) (SCM_SET_SMOB_DATA_0 ((x), (SCM_CELL_TYPE (x)&0xffff)|((data)<<16)))
#define SCM_SET_SMOB_DATA(x, data) (SCM_SET_SMOB_DATA_1 ((x), (data)))
#define SCM_SMOB_OBJECT_N(x,n) (SCM_CELL_OBJECT ((x), (n)))
#define SCM_SET_SMOB_OBJECT_N(x,n,obj) (SCM_SET_CELL_OBJECT ((x), (n), (obj)))
#define SCM_SMOB_OBJECT_N_LOC(x,n) (SCM_CELL_OBJECT_LOC ((x), (n)))
/*#define SCM_SMOB_OBJECT_0(x) (SCM_SMOB_OBJECT_N ((x), 0))*/
#define SCM_SMOB_OBJECT_1(x) (SCM_SMOB_OBJECT_N ((x), 1))
#define SCM_SMOB_OBJECT_2(x) (SCM_SMOB_OBJECT_N ((x), 2))
#define SCM_SMOB_OBJECT_3(x) (SCM_SMOB_OBJECT_N ((x), 3))
/*#define SCM_SET_SMOB_OBJECT_0(x,obj) (SCM_SET_SMOB_OBJECT_N ((x), 0, (obj)))*/
#define SCM_SET_SMOB_OBJECT_1(x,obj) (SCM_SET_SMOB_OBJECT_N ((x), 1, (obj)))
#define SCM_SET_SMOB_OBJECT_2(x,obj) (SCM_SET_SMOB_OBJECT_N ((x), 2, (obj)))
#define SCM_SET_SMOB_OBJECT_3(x,obj) (SCM_SET_SMOB_OBJECT_N ((x), 3, (obj)))
#define SCM_SMOB_OBJECT_0_LOC(x) (SCM_SMOB_OBJECT_N_LOC ((x), 0))
#define SCM_SMOB_OBJECT_1_LOC(x) (SCM_SMOB_OBJECT_N_LOC ((x), 1))
#define SCM_SMOB_OBJECT_2_LOC(x) (SCM_SMOB_OBJECT_N_LOC ((x), 2))
#define SCM_SMOB_OBJECT_3_LOC(x) (SCM_SMOB_OBJECT_N_LOC ((x), 3))
#define SCM_SMOB_OBJECT(x) (SCM_SMOB_OBJECT_1 (x))
#define SCM_SET_SMOB_OBJECT(x,obj) (SCM_SET_SMOB_OBJECT_1 ((x), (obj)))
#define SCM_SMOB_OBJECT_LOC(x) (SCM_SMOB_OBJECT_1_LOC (x))
#define SCM_SMOB_APPLY_0(x) (scm_call_0 (x))
#define SCM_SMOB_APPLY_1(x, a1) (scm_call_1 (x, a1))
#define SCM_SMOB_APPLY_2(x, a1, a2) (scm_call_2 (x, a1, a2))
#define SCM_SMOB_APPLY_3(x, a1, a2, rst) (scm_call_3 (x, a1, a2, a3))
SCM_API SCM scm_mark0 (SCM ptr);
SCM_API SCM scm_markcdr (SCM ptr);
SCM_API size_t scm_free0 (SCM ptr);
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 const *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_t_subr apply,
unsigned int req,
unsigned int opt,
unsigned int rst);
SCM_API SCM scm_smob_type_class (scm_t_bits tc);
SCM_API void scm_assert_smob_type (scm_t_bits tag, SCM val);
/* 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 */
|
