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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
7a7f7c53 DH |
3 | #ifndef SCM_SMOB_H |
4 | #define SCM_SMOB_H | |
dee01b01 | 5 | |
197b0573 | 6 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004 Free Software Foundation, Inc. |
dee01b01 | 7 | * |
73be1d9e MV |
8 | * This library is free software; you can redistribute it and/or |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
dee01b01 | 12 | * |
73be1d9e | 13 | * This library is distributed in the hope that it will be useful, |
0f2d19dd | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | * Lesser General Public License for more details. | |
dee01b01 | 17 | * |
73be1d9e MV |
18 | * You should have received a copy of the GNU Lesser General Public |
19 | * License along with this library; if not, write to the Free Software | |
92205699 | 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 21 | */ |
dee01b01 | 22 | |
0f2d19dd | 23 | \f |
dee01b01 | 24 | |
b4309c3c | 25 | #include "libguile/__scm.h" |
b08323d1 | 26 | #include "libguile/print.h" |
0f2d19dd JB |
27 | |
28 | \f | |
9dd5943c MD |
29 | /* This is the internal representation of a smob type */ |
30 | ||
31 | typedef struct scm_smob_descriptor | |
32 | { | |
da0e6c2b | 33 | char const *name; |
1be6b49c | 34 | size_t size; |
7866a09b | 35 | SCM (*mark) (SCM); |
1be6b49c | 36 | size_t (*free) (SCM); |
7866a09b GB |
37 | int (*print) (SCM exp, SCM port, scm_print_state *pstate); |
38 | SCM (*equalp) (SCM, SCM); | |
cb1c46c5 KN |
39 | SCM (*apply) (); |
40 | SCM (*apply_0) (SCM); | |
41 | SCM (*apply_1) (SCM, SCM); | |
42 | SCM (*apply_2) (SCM, SCM, SCM); | |
43 | SCM (*apply_3) (SCM, SCM, SCM, SCM); | |
68b06924 | 44 | int gsubr_type; /* Used in procprop.c */ |
9dd5943c MD |
45 | } scm_smob_descriptor; |
46 | ||
0f2d19dd JB |
47 | \f |
48 | ||
9dd5943c | 49 | #define SCM_NEWSMOB(z, tc, data) \ |
23a62151 | 50 | do { \ |
228a24ef | 51 | z = scm_cell ((tc), (scm_t_bits) (data)); \ |
23a62151 MD |
52 | } while (0) |
53 | ||
54 | #define SCM_RETURN_NEWSMOB(tc, data) \ | |
55 | do { SCM __SCM_smob_answer; \ | |
94113249 | 56 | SCM_NEWSMOB (__SCM_smob_answer, (tc), (data)); \ |
23a62151 MD |
57 | return __SCM_smob_answer; \ |
58 | } while (0) | |
59 | ||
87621a14 MD |
60 | #define SCM_NEWSMOB2(z, tc, data1, data2) \ |
61 | do { \ | |
228a24ef | 62 | z = scm_double_cell ((tc), (scm_t_bits)(data1), (scm_t_bits)(data2), 0); \ |
87621a14 MD |
63 | } while (0) |
64 | ||
65 | #define SCM_RETURN_NEWSMOB2(tc, data1, data2) \ | |
66 | do { SCM __SCM_smob_answer; \ | |
94113249 | 67 | SCM_NEWSMOB2 (__SCM_smob_answer, (tc), (data1), (data2)); \ |
87621a14 MD |
68 | return __SCM_smob_answer; \ |
69 | } while (0) | |
70 | ||
71 | #define SCM_NEWSMOB3(z, tc, data1, data2, data3) \ | |
72 | do { \ | |
228a24ef DH |
73 | z = scm_double_cell ((tc), (scm_t_bits)(data1), \ |
74 | (scm_t_bits)(data2), (scm_t_bits)(data3)); \ | |
87621a14 MD |
75 | } while (0) |
76 | ||
77 | #define SCM_RETURN_NEWSMOB3(tc, data1, data2, data3) \ | |
78 | do { SCM __SCM_smob_answer; \ | |
94113249 | 79 | SCM_NEWSMOB3 (__SCM_smob_answer, (tc), (data1), (data2), (data3)); \ |
87621a14 MD |
80 | return __SCM_smob_answer; \ |
81 | } while (0) | |
82 | ||
9dd5943c | 83 | |
37fc18ae | 84 | #define SCM_SMOB_FLAGS(x) (SCM_CELL_WORD_0 (x) >> 16) |
94113249 | 85 | #define SCM_SMOB_DATA(x) (SCM_CELL_WORD_1 (x)) |
37fc18ae MV |
86 | #define SCM_SMOB_DATA_2(x) (SCM_CELL_WORD_2 (x)) |
87 | #define SCM_SMOB_DATA_3(x) (SCM_CELL_WORD_3 (x)) | |
94113249 | 88 | #define SCM_SET_SMOB_DATA(x, data) (SCM_SET_CELL_WORD_1 ((x), (data))) |
37fc18ae MV |
89 | #define SCM_SET_SMOB_DATA_2(x, data) (SCM_SET_CELL_WORD_2 ((x), (data))) |
90 | #define SCM_SET_SMOB_DATA_3(x, data) (SCM_SET_CELL_WORD_3 ((x), (data))) | |
91 | #define SCM_SET_SMOB_FLAGS(x, data) (scm_i_set_smob_flags((x),(data)<<16)) | |
92 | ||
93 | #define SCM_SMOB_OBJECT(x) (SCM_CELL_OBJECT_1 (x)) | |
94 | #define SCM_SMOB_OBJECT_2(x) (SCM_CELL_OBJECT_2 (x)) | |
95 | #define SCM_SMOB_OBJECT_3(x) (SCM_CELL_OBJECT_3 (x)) | |
96 | #define SCM_SET_SMOB_OBJECT(x,obj) (SCM_SET_CELL_OBJECT_1 ((x), (obj))) | |
97 | #define SCM_SET_SMOB_OBJECT_2(x,obj) (SCM_SET_CELL_OBJECT_2 ((x), (obj))) | |
98 | #define SCM_SET_SMOB_OBJECT_3(x,obj) (SCM_SET_CELL_OBJECT_3 ((x), (obj))) | |
99 | #define SCM_SMOB_OBJECT_LOC(x) (SCM_CELL_OBJECT_LOC ((x), 1)) | |
100 | #define SCM_SMOB_OBJECT_2_LOC(x) (SCM_CELL_OBJECT_LOC ((x), 2)) | |
101 | #define SCM_SMOB_OBJECT_3_LOC(x) (SCM_CELL_OBJECT_LOC ((x), 3)) | |
102 | ||
94113249 DH |
103 | #define SCM_TC2SMOBNUM(x) (0x0ff & ((x) >> 8)) |
104 | #define SCM_SMOBNUM(x) (SCM_TC2SMOBNUM (SCM_CELL_TYPE (x))) | |
2c16a78a | 105 | /* SCM_SMOBNAME can be 0 if name is missing */ |
94113249 | 106 | #define SCM_SMOBNAME(smobnum) (scm_smobs[smobnum].name) |
e841c3e0 | 107 | #define SCM_SMOB_PREDICATE(tag, obj) SCM_TYP16_PREDICATE (tag, obj) |
0717dfd8 | 108 | #define SCM_SMOB_DESCRIPTOR(x) (scm_smobs[SCM_SMOBNUM (x)]) |
68b06924 KN |
109 | #define SCM_SMOB_APPLICABLE_P(x) (SCM_SMOB_DESCRIPTOR (x).apply) |
110 | #define SCM_SMOB_APPLY_0(x) (SCM_SMOB_DESCRIPTOR (x).apply_0 (x)) | |
34d19ef6 HWN |
111 | #define SCM_SMOB_APPLY_1(x, a1) (SCM_SMOB_DESCRIPTOR (x).apply_1 (x, (a1))) |
112 | #define SCM_SMOB_APPLY_2(x, a1, a2) (SCM_SMOB_DESCRIPTOR (x).apply_2 (x, (a1), (a2))) | |
113 | #define SCM_SMOB_APPLY_3(x, a1, a2, rst) (SCM_SMOB_DESCRIPTOR (x).apply_3 (x, (a1), (a2), (rst))) | |
0f2d19dd | 114 | |
33b001fd MV |
115 | SCM_API long scm_numsmob; |
116 | SCM_API scm_smob_descriptor scm_smobs[]; | |
0f2d19dd | 117 | |
37fc18ae MV |
118 | SCM_API void scm_i_set_smob_flags (SCM x, scm_t_bits data); |
119 | ||
0f2d19dd | 120 | \f |
0f2d19dd | 121 | |
33b001fd MV |
122 | SCM_API SCM scm_mark0 (SCM ptr); |
123 | SCM_API SCM scm_markcdr (SCM ptr); | |
124 | SCM_API size_t scm_free0 (SCM ptr); | |
125 | SCM_API size_t scm_smob_free (SCM obj); | |
126 | SCM_API int scm_smob_print (SCM exp, SCM port, scm_print_state *pstate); | |
23a62151 | 127 | |
c72baaaa MD |
128 | /* The following set of functions is the standard way to create new |
129 | * SMOB types. | |
130 | * | |
131 | * Create a type tag using `scm_make_smob_type', accept default values | |
132 | * for mark, free, print and/or equalp functions, or set your own | |
133 | * values using `scm_set_smob_xxx'. | |
134 | */ | |
23a62151 | 135 | |
df5af69a | 136 | SCM_API scm_t_bits scm_make_smob_type (char const *name, size_t size); |
23a62151 | 137 | |
33b001fd MV |
138 | SCM_API void scm_set_smob_mark (scm_t_bits tc, SCM (*mark) (SCM)); |
139 | SCM_API void scm_set_smob_free (scm_t_bits tc, size_t (*free) (SCM)); | |
140 | SCM_API void scm_set_smob_print (scm_t_bits tc, | |
141 | int (*print) (SCM, SCM, scm_print_state*)); | |
142 | SCM_API void scm_set_smob_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM)); | |
143 | SCM_API void scm_set_smob_apply (scm_t_bits tc, | |
144 | SCM (*apply) (), | |
145 | unsigned int req, | |
146 | unsigned int opt, | |
147 | unsigned int rst); | |
c72baaaa | 148 | |
197b0573 MV |
149 | SCM_API void scm_assert_smob_type (scm_t_bits tag, SCM val); |
150 | ||
7c58e21b | 151 | /* Function for creating smobs */ |
c72baaaa | 152 | |
33b001fd | 153 | SCM_API SCM scm_make_smob (scm_t_bits tc); |
197b0573 | 154 | |
33b001fd | 155 | SCM_API void scm_smob_prehistory (void); |
7c58e21b | 156 | |
7a7f7c53 | 157 | #endif /* SCM_SMOB_H */ |
89e00824 ML |
158 | |
159 | /* | |
160 | Local Variables: | |
161 | c-file-style: "gnu" | |
162 | End: | |
163 | */ |