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
|
/* classes: h_files */
#ifndef SCM_SMOB_H
#define SCM_SMOB_H
/* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2004, 2006, 2009,
* 2010, 2011, 2012, 2015 Free Software Foundation, Inc.
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "libguile/__scm.h"
#include "libguile/print.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)
/* 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[];
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 */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
|
