Commit | Line | Data |
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e2fafeb9 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012,2013,2014,2015 |
366ecaec | 2 | * Free Software Foundation, Inc. |
6d77c894 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
6d77c894 | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
6d77c894 | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
80662eda MD |
19 | \f |
20 | ||
21 | /* This software is a derivative work of other copyrighted softwares; the | |
22 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
23 | * | |
24 | * This file is based upon stklos.c from the STk distribution by | |
25 | * Erick Gallesio <eg@unice.fr>. | |
26 | */ | |
27 | ||
dbb605f5 LC |
28 | #ifdef HAVE_CONFIG_H |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
80662eda | 32 | #include "libguile/_scm.h" |
4e047c3e | 33 | #include "libguile/async.h" |
539d5410 | 34 | #include "libguile/chars.h" |
80662eda MD |
35 | #include "libguile/dynwind.h" |
36 | #include "libguile/eval.h" | |
9fdf9fd3 | 37 | #include "libguile/gsubr.h" |
80662eda MD |
38 | #include "libguile/hashtab.h" |
39 | #include "libguile/keywords.h" | |
40 | #include "libguile/macros.h" | |
41 | #include "libguile/modules.h" | |
80662eda MD |
42 | #include "libguile/ports.h" |
43 | #include "libguile/procprop.h" | |
efcebb5b | 44 | #include "libguile/programs.h" |
80662eda MD |
45 | #include "libguile/smob.h" |
46 | #include "libguile/strings.h" | |
47 | #include "libguile/strports.h" | |
48 | #include "libguile/vectors.h" | |
80662eda | 49 | |
ca83b028 | 50 | #include "libguile/validate.h" |
80662eda MD |
51 | #include "libguile/goops.h" |
52 | ||
efcebb5b AW |
53 | /* Port classes */ |
54 | #define SCM_IN_PCLASS_INDEX 0 | |
55 | #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT | |
56 | #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT) | |
57 | ||
f6088819 AW |
58 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND |
59 | #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND)) | |
60 | ||
51fd1cd6 AW |
61 | /* Objects have identity, so references to classes and instances are by |
62 | value, not by reference. Redefinition of a class or modification of | |
63 | an instance causes in-place update; you can think of GOOPS as | |
64 | building in its own indirection, and for that reason referring to | |
65 | GOOPS values by variable reference is unnecessary. | |
bef95911 | 66 | |
51fd1cd6 AW |
67 | References to ordinary procedures is by reference (by variable), |
68 | though, as in the rest of Guile. */ | |
69 | ||
f6088819 AW |
70 | static int goops_loaded_p = 0; |
71 | ||
51fd1cd6 | 72 | static SCM var_make_standard_class = SCM_BOOL_F; |
bef95911 | 73 | static SCM var_change_class = SCM_BOOL_F; |
e0590e7c | 74 | static SCM var_make = SCM_BOOL_F; |
70dd6000 AW |
75 | static SCM var_class_name = SCM_BOOL_F; |
76 | static SCM var_class_direct_supers = SCM_BOOL_F; | |
77 | static SCM var_class_direct_slots = SCM_BOOL_F; | |
78 | static SCM var_class_direct_subclasses = SCM_BOOL_F; | |
79 | static SCM var_class_direct_methods = SCM_BOOL_F; | |
80 | static SCM var_class_precedence_list = SCM_BOOL_F; | |
81 | static SCM var_class_slots = SCM_BOOL_F; | |
bef95911 | 82 | |
48c981c9 AW |
83 | static SCM var_generic_function_methods = SCM_BOOL_F; |
84 | static SCM var_method_generic_function = SCM_BOOL_F; | |
85 | static SCM var_method_specializers = SCM_BOOL_F; | |
86 | static SCM var_method_procedure = SCM_BOOL_F; | |
87 | ||
ade4cf4c AW |
88 | static SCM var_slot_ref_using_class = SCM_BOOL_F; |
89 | static SCM var_slot_set_using_class_x = SCM_BOOL_F; | |
90 | static SCM var_slot_bound_using_class_p = SCM_BOOL_F; | |
91 | static SCM var_slot_exists_using_class_p = SCM_BOOL_F; | |
92 | ||
93 | static SCM var_slot_ref = SCM_BOOL_F; | |
94 | static SCM var_slot_set_x = SCM_BOOL_F; | |
95 | static SCM var_slot_bound_p = SCM_BOOL_F; | |
96 | static SCM var_slot_exists_p = SCM_BOOL_F; | |
97 | ||
539d5410 | 98 | /* These variables are filled in by the object system when loaded. */ |
57898597 AW |
99 | static SCM class_boolean, class_char, class_pair; |
100 | static SCM class_procedure, class_string, class_symbol; | |
101 | static SCM class_primitive_generic; | |
102 | static SCM class_vector, class_null; | |
103 | static SCM class_integer, class_real, class_complex, class_fraction; | |
104 | static SCM class_unknown; | |
105 | static SCM class_top, class_object, class_class; | |
106 | static SCM class_applicable; | |
107 | static SCM class_applicable_struct, class_applicable_struct_with_setter; | |
108 | static SCM class_generic, class_generic_with_setter; | |
109 | static SCM class_accessor; | |
110 | static SCM class_extended_generic, class_extended_generic_with_setter; | |
111 | static SCM class_extended_accessor; | |
112 | static SCM class_method; | |
113 | static SCM class_accessor_method; | |
114 | static SCM class_procedure_class; | |
115 | static SCM class_applicable_struct_class; | |
116 | static SCM class_applicable_struct_with_setter_class; | |
117 | static SCM class_number, class_list; | |
118 | static SCM class_keyword; | |
119 | static SCM class_port, class_input_output_port; | |
120 | static SCM class_input_port, class_output_port; | |
121 | static SCM class_foreign_slot; | |
122 | static SCM class_self, class_protected; | |
123 | static SCM class_hidden, class_opaque, class_read_only; | |
124 | static SCM class_protected_hidden, class_protected_opaque, class_protected_read_only; | |
125 | static SCM class_scm; | |
126 | static SCM class_int, class_float, class_double; | |
80662eda | 127 | |
e2c2a699 | 128 | static SCM class_foreign; |
9ea31741 AW |
129 | static SCM class_hashtable; |
130 | static SCM class_fluid; | |
131 | static SCM class_dynamic_state; | |
6f3b0cc2 | 132 | static SCM class_frame; |
6f3b0cc2 | 133 | static SCM class_vm_cont; |
f826a886 AW |
134 | static SCM class_bytevector; |
135 | static SCM class_uvec; | |
b2637c98 | 136 | static SCM class_array; |
ff1feca9 | 137 | static SCM class_bitvector; |
9ea31741 | 138 | |
f3c6a02c AW |
139 | static SCM vtable_class_map = SCM_BOOL_F; |
140 | ||
63385df2 LC |
141 | /* Port classes. Allocate 3 times the maximum number of port types so that |
142 | input ports, output ports, and in/out ports can be stored at different | |
143 | offsets. See `SCM_IN_PCLASS_INDEX' et al. */ | |
57898597 | 144 | SCM scm_i_port_class[3 * SCM_I_MAX_PORT_TYPE_COUNT]; |
63385df2 LC |
145 | |
146 | /* SMOB classes. */ | |
57898597 | 147 | SCM scm_i_smob_class[SCM_I_MAX_SMOB_TYPE_COUNT]; |
539d5410 | 148 | |
80662eda MD |
149 | static SCM scm_make_unbound (void); |
150 | static SCM scm_unbound_p (SCM obj); | |
70dd6000 | 151 | static SCM scm_class_p (SCM obj); |
6c7dd9eb AW |
152 | static SCM scm_sys_bless_applicable_struct_vtables_x (SCM applicable, |
153 | SCM setter); | |
4702cbeb | 154 | static SCM scm_sys_make_root_class (SCM layout); |
51fd1cd6 | 155 | static SCM scm_sys_init_layout_x (SCM class, SCM layout); |
82ab5090 | 156 | static SCM scm_sys_goops_early_init (void); |
398d8ee1 | 157 | static SCM scm_sys_goops_loaded (void); |
80662eda | 158 | |
f3c6a02c | 159 | |
539d5410 MV |
160 | /* This function is used for efficient type dispatch. */ |
161 | SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0, | |
162 | (SCM x), | |
163 | "Return the class of @var{x}.") | |
164 | #define FUNC_NAME s_scm_class_of | |
165 | { | |
166 | switch (SCM_ITAG3 (x)) | |
167 | { | |
168 | case scm_tc3_int_1: | |
169 | case scm_tc3_int_2: | |
57898597 | 170 | return class_integer; |
539d5410 MV |
171 | |
172 | case scm_tc3_imm24: | |
173 | if (SCM_CHARP (x)) | |
57898597 | 174 | return class_char; |
539d5410 | 175 | else if (scm_is_bool (x)) |
57898597 | 176 | return class_boolean; |
539d5410 | 177 | else if (scm_is_null (x)) |
57898597 | 178 | return class_null; |
539d5410 | 179 | else |
57898597 | 180 | return class_unknown; |
539d5410 MV |
181 | |
182 | case scm_tc3_cons: | |
183 | switch (SCM_TYP7 (x)) | |
184 | { | |
185 | case scm_tcs_cons_nimcar: | |
57898597 | 186 | return class_pair; |
539d5410 | 187 | case scm_tc7_symbol: |
57898597 | 188 | return class_symbol; |
539d5410 MV |
189 | case scm_tc7_vector: |
190 | case scm_tc7_wvect: | |
57898597 | 191 | return class_vector; |
5b46a8c2 | 192 | case scm_tc7_pointer: |
e2c2a699 | 193 | return class_foreign; |
c99de5aa | 194 | case scm_tc7_hashtable: |
9ea31741 AW |
195 | return class_hashtable; |
196 | case scm_tc7_fluid: | |
197 | return class_fluid; | |
198 | case scm_tc7_dynamic_state: | |
199 | return class_dynamic_state; | |
6f3b0cc2 AW |
200 | case scm_tc7_frame: |
201 | return class_frame; | |
e2fafeb9 | 202 | case scm_tc7_keyword: |
57898597 | 203 | return class_keyword; |
6f3b0cc2 AW |
204 | case scm_tc7_vm_cont: |
205 | return class_vm_cont; | |
f826a886 AW |
206 | case scm_tc7_bytevector: |
207 | if (SCM_BYTEVECTOR_ELEMENT_TYPE (x) == SCM_ARRAY_ELEMENT_TYPE_VU8) | |
208 | return class_bytevector; | |
209 | else | |
210 | return class_uvec; | |
b2637c98 AW |
211 | case scm_tc7_array: |
212 | return class_array; | |
ff1feca9 AW |
213 | case scm_tc7_bitvector: |
214 | return class_bitvector; | |
539d5410 | 215 | case scm_tc7_string: |
57898597 | 216 | return class_string; |
539d5410 MV |
217 | case scm_tc7_number: |
218 | switch SCM_TYP16 (x) { | |
219 | case scm_tc16_big: | |
57898597 | 220 | return class_integer; |
539d5410 | 221 | case scm_tc16_real: |
57898597 | 222 | return class_real; |
539d5410 | 223 | case scm_tc16_complex: |
57898597 | 224 | return class_complex; |
539d5410 | 225 | case scm_tc16_fraction: |
57898597 | 226 | return class_fraction; |
539d5410 | 227 | } |
e0755cd1 | 228 | case scm_tc7_program: |
b2b33168 AW |
229 | if (SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x) |
230 | && SCM_UNPACK (*SCM_SUBR_GENERIC (x))) | |
57898597 | 231 | return class_primitive_generic; |
fd12a19a | 232 | else |
57898597 | 233 | return class_procedure; |
539d5410 MV |
234 | |
235 | case scm_tc7_smob: | |
236 | { | |
237 | scm_t_bits type = SCM_TYP16 (x); | |
238 | if (type != scm_tc16_port_with_ps) | |
57898597 | 239 | return scm_i_smob_class[SCM_TC2SMOBNUM (type)]; |
539d5410 MV |
240 | x = SCM_PORT_WITH_PS_PORT (x); |
241 | /* fall through to ports */ | |
242 | } | |
243 | case scm_tc7_port: | |
57898597 AW |
244 | return scm_i_port_class[(SCM_WRTNG & SCM_CELL_WORD_0 (x) |
245 | ? (SCM_RDNG & SCM_CELL_WORD_0 (x) | |
246 | ? SCM_INOUT_PCLASS_INDEX | SCM_PTOBNUM (x) | |
247 | : SCM_OUT_PCLASS_INDEX | SCM_PTOBNUM (x)) | |
248 | : SCM_IN_PCLASS_INDEX | SCM_PTOBNUM (x))]; | |
539d5410 MV |
249 | case scm_tcs_struct: |
250 | if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS_VALID) | |
251 | return SCM_CLASS_OF (x); | |
252 | else if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS) | |
253 | { | |
254 | /* Goops object */ | |
255 | if (! scm_is_false (SCM_OBJ_CLASS_REDEF (x))) | |
256 | scm_change_object_class (x, | |
257 | SCM_CLASS_OF (x), /* old */ | |
258 | SCM_OBJ_CLASS_REDEF (x)); /* new */ | |
259 | return SCM_CLASS_OF (x); | |
260 | } | |
261 | else | |
f3c6a02c | 262 | return scm_i_define_class_for_vtable (SCM_CLASS_OF (x)); |
539d5410 MV |
263 | default: |
264 | if (scm_is_pair (x)) | |
57898597 | 265 | return class_pair; |
539d5410 | 266 | else |
57898597 | 267 | return class_unknown; |
539d5410 MV |
268 | } |
269 | ||
270 | case scm_tc3_struct: | |
271 | case scm_tc3_tc7_1: | |
272 | case scm_tc3_tc7_2: | |
314b8716 | 273 | /* case scm_tc3_unused: */ |
539d5410 MV |
274 | /* Never reached */ |
275 | break; | |
276 | } | |
57898597 | 277 | return class_unknown; |
539d5410 MV |
278 | } |
279 | #undef FUNC_NAME | |
280 | ||
51fd1cd6 AW |
281 | SCM_DEFINE (scm_sys_init_layout_x, "%init-layout!", 2, 0, 0, |
282 | (SCM class, SCM layout), | |
398d8ee1 | 283 | "") |
51fd1cd6 | 284 | #define FUNC_NAME s_scm_sys_init_layout_x |
80662eda | 285 | { |
398d8ee1 | 286 | SCM_VALIDATE_INSTANCE (1, class); |
51fd1cd6 AW |
287 | SCM_ASSERT (!scm_is_symbol (SCM_VTABLE_LAYOUT (class)), class, 1, FUNC_NAME); |
288 | SCM_VALIDATE_STRING (2, layout); | |
289 | ||
290 | SCM_SET_VTABLE_LAYOUT (class, scm_make_struct_layout (layout)); | |
80662eda MD |
291 | return SCM_UNSPECIFIED; |
292 | } | |
398d8ee1 | 293 | #undef FUNC_NAME |
80662eda | 294 | |
398d8ee1 KN |
295 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
296 | (SCM class, SCM dsupers), | |
297 | "") | |
298 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda | 299 | { |
398d8ee1 | 300 | SCM_VALIDATE_INSTANCE (1, class); |
51f66c91 AW |
301 | scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class); |
302 | SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID); | |
80662eda | 303 | |
80662eda MD |
304 | return SCM_UNSPECIFIED; |
305 | } | |
398d8ee1 | 306 | #undef FUNC_NAME |
80662eda | 307 | |
80662eda MD |
308 | /******************************************************************************/ |
309 | ||
80662eda | 310 | SCM |
28b818d3 | 311 | scm_make_standard_class (SCM meta, SCM name, SCM dsupers, SCM dslots) |
80662eda | 312 | { |
51fd1cd6 | 313 | return scm_call_4 (scm_variable_ref (var_make_standard_class), |
28b818d3 | 314 | meta, name, dsupers, dslots); |
80662eda MD |
315 | } |
316 | ||
317 | /******************************************************************************/ | |
318 | ||
4702cbeb AW |
319 | SCM_DEFINE (scm_sys_make_root_class, "%make-root-class", 1, 0, 0, |
320 | (SCM layout), | |
51fd1cd6 AW |
321 | "") |
322 | #define FUNC_NAME s_scm_sys_make_root_class | |
80662eda | 323 | { |
4702cbeb AW |
324 | SCM z; |
325 | ||
326 | z = scm_i_make_vtable_vtable (layout); | |
327 | SCM_SET_CLASS_FLAGS (z, (SCM_CLASSF_GOOPS_OR_VALID | SCM_CLASSF_METACLASS)); | |
80662eda | 328 | |
51fd1cd6 | 329 | return z; |
80662eda | 330 | } |
51fd1cd6 | 331 | #undef FUNC_NAME |
80662eda MD |
332 | |
333 | /******************************************************************************/ | |
334 | ||
398d8ee1 KN |
335 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
336 | (SCM obj), | |
6bcefd15 | 337 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 338 | #define FUNC_NAME s_scm_instance_p |
80662eda | 339 | { |
7888309b | 340 | return scm_from_bool (SCM_INSTANCEP (obj)); |
80662eda | 341 | } |
398d8ee1 | 342 | #undef FUNC_NAME |
80662eda | 343 | |
70dd6000 AW |
344 | SCM_DEFINE (scm_class_p, "class?", 1, 0, 0, |
345 | (SCM obj), | |
346 | "Return @code{#t} if @var{obj} is a class.") | |
347 | #define FUNC_NAME s_scm_class_p | |
348 | { | |
349 | return scm_from_bool (SCM_CLASSP (obj)); | |
350 | } | |
351 | #undef FUNC_NAME | |
352 | ||
57898597 AW |
353 | int |
354 | scm_is_generic (SCM x) | |
355 | { | |
356 | return SCM_INSTANCEP (x) && SCM_SUBCLASSP (SCM_CLASS_OF (x), class_generic); | |
357 | } | |
358 | ||
359 | int | |
360 | scm_is_method (SCM x) | |
361 | { | |
362 | return SCM_INSTANCEP (x) && SCM_SUBCLASSP (SCM_CLASS_OF (x), class_method); | |
363 | } | |
80662eda MD |
364 | |
365 | /****************************************************************************** | |
6d77c894 | 366 | * |
80662eda MD |
367 | * Meta object accessors |
368 | * | |
369 | ******************************************************************************/ | |
51fd1cd6 | 370 | |
70dd6000 AW |
371 | SCM |
372 | scm_class_name (SCM obj) | |
80662eda | 373 | { |
70dd6000 | 374 | return scm_call_1 (scm_variable_ref (var_class_name), obj); |
80662eda MD |
375 | } |
376 | ||
70dd6000 AW |
377 | SCM |
378 | scm_class_direct_supers (SCM obj) | |
80662eda | 379 | { |
70dd6000 | 380 | return scm_call_1 (scm_variable_ref (var_class_direct_supers), obj); |
80662eda MD |
381 | } |
382 | ||
70dd6000 AW |
383 | SCM |
384 | scm_class_direct_slots (SCM obj) | |
80662eda | 385 | { |
70dd6000 | 386 | return scm_call_1 (scm_variable_ref (var_class_direct_slots), obj); |
80662eda MD |
387 | } |
388 | ||
70dd6000 AW |
389 | SCM |
390 | scm_class_direct_subclasses (SCM obj) | |
80662eda | 391 | { |
70dd6000 | 392 | return scm_call_1 (scm_variable_ref (var_class_direct_subclasses), obj); |
80662eda MD |
393 | } |
394 | ||
70dd6000 AW |
395 | SCM |
396 | scm_class_direct_methods (SCM obj) | |
80662eda | 397 | { |
70dd6000 | 398 | return scm_call_1 (scm_variable_ref (var_class_direct_methods), obj); |
80662eda MD |
399 | } |
400 | ||
70dd6000 AW |
401 | SCM |
402 | scm_class_precedence_list (SCM obj) | |
80662eda | 403 | { |
70dd6000 | 404 | return scm_call_1 (scm_variable_ref (var_class_precedence_list), obj); |
80662eda MD |
405 | } |
406 | ||
70dd6000 AW |
407 | SCM |
408 | scm_class_slots (SCM obj) | |
80662eda | 409 | { |
70dd6000 | 410 | return scm_call_1 (scm_variable_ref (var_class_slots), obj); |
80662eda MD |
411 | } |
412 | ||
398d8ee1 | 413 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
70dd6000 | 414 | (SCM obj), |
6bcefd15 | 415 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 416 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 417 | { |
398d8ee1 | 418 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
419 | return scm_procedure_property (obj, scm_sym_name); |
420 | } | |
398d8ee1 | 421 | #undef FUNC_NAME |
80662eda | 422 | |
48c981c9 AW |
423 | SCM |
424 | scm_generic_function_methods (SCM obj) | |
80662eda | 425 | { |
48c981c9 | 426 | return scm_call_1 (scm_variable_ref (var_generic_function_methods), obj); |
80662eda MD |
427 | } |
428 | ||
48c981c9 AW |
429 | SCM |
430 | scm_method_generic_function (SCM obj) | |
80662eda | 431 | { |
48c981c9 | 432 | return scm_call_1 (scm_variable_ref (var_method_generic_function), obj); |
80662eda MD |
433 | } |
434 | ||
48c981c9 AW |
435 | SCM |
436 | scm_method_specializers (SCM obj) | |
80662eda | 437 | { |
48c981c9 | 438 | return scm_call_1 (scm_variable_ref (var_method_specializers), obj); |
80662eda MD |
439 | } |
440 | ||
48c981c9 AW |
441 | SCM |
442 | scm_method_procedure (SCM obj) | |
80662eda | 443 | { |
48c981c9 | 444 | return scm_call_1 (scm_variable_ref (var_method_procedure), obj); |
80662eda MD |
445 | } |
446 | ||
80662eda MD |
447 | /****************************************************************************** |
448 | * | |
449 | * S l o t a c c e s s | |
450 | * | |
451 | ******************************************************************************/ | |
452 | ||
398d8ee1 KN |
453 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
454 | (), | |
6bcefd15 | 455 | "Return the unbound value.") |
398d8ee1 | 456 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
457 | { |
458 | return SCM_GOOPS_UNBOUND; | |
459 | } | |
398d8ee1 | 460 | #undef FUNC_NAME |
80662eda | 461 | |
398d8ee1 KN |
462 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
463 | (SCM obj), | |
6bcefd15 | 464 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 465 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
466 | { |
467 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
468 | } | |
398d8ee1 | 469 | #undef FUNC_NAME |
80662eda | 470 | |
80662eda | 471 | |
4d0949ea | 472 | \f |
80662eda | 473 | |
ade4cf4c AW |
474 | SCM |
475 | scm_slot_ref_using_class (SCM class, SCM obj, SCM slot_name) | |
80662eda | 476 | { |
ade4cf4c AW |
477 | return scm_call_3 (scm_variable_ref (var_slot_ref_using_class), |
478 | class, obj, slot_name); | |
80662eda | 479 | } |
80662eda | 480 | |
ade4cf4c AW |
481 | SCM |
482 | scm_slot_set_using_class_x (SCM class, SCM obj, SCM slot_name, SCM value) | |
80662eda | 483 | { |
ade4cf4c AW |
484 | return scm_call_4 (scm_variable_ref (var_slot_set_using_class_x), |
485 | class, obj, slot_name, value); | |
80662eda | 486 | } |
23437298 | 487 | |
ade4cf4c AW |
488 | SCM |
489 | scm_slot_bound_using_class_p (SCM class, SCM obj, SCM slot_name) | |
80662eda | 490 | { |
ade4cf4c AW |
491 | return scm_call_3 (scm_variable_ref (var_slot_bound_using_class_p), |
492 | class, obj, slot_name); | |
80662eda MD |
493 | } |
494 | ||
ade4cf4c AW |
495 | SCM |
496 | scm_slot_exists_using_class_p (SCM class, SCM obj, SCM slot_name) | |
398d8ee1 | 497 | { |
ade4cf4c AW |
498 | return scm_call_3 (scm_variable_ref (var_slot_exists_using_class_p), |
499 | class, obj, slot_name); | |
80662eda | 500 | } |
80662eda | 501 | |
ade4cf4c AW |
502 | SCM |
503 | scm_slot_ref (SCM obj, SCM slot_name) | |
80662eda | 504 | { |
ade4cf4c | 505 | return scm_call_2 (scm_variable_ref (var_slot_ref), obj, slot_name); |
80662eda MD |
506 | } |
507 | ||
ade4cf4c AW |
508 | SCM |
509 | scm_slot_set_x (SCM obj, SCM slot_name, SCM value) | |
80662eda | 510 | { |
ade4cf4c | 511 | return scm_call_3 (scm_variable_ref (var_slot_set_x), obj, slot_name, value); |
80662eda MD |
512 | } |
513 | ||
ade4cf4c AW |
514 | SCM |
515 | scm_slot_bound_p (SCM obj, SCM slot_name) | |
80662eda | 516 | { |
ade4cf4c | 517 | return scm_call_2 (scm_variable_ref (var_slot_bound_p), obj, slot_name); |
80662eda MD |
518 | } |
519 | ||
ade4cf4c AW |
520 | SCM |
521 | scm_slot_exists_p (SCM obj, SCM slot_name) | |
80662eda | 522 | { |
ade4cf4c | 523 | return scm_call_2 (scm_variable_ref (var_slot_exists_p), obj, slot_name); |
80662eda MD |
524 | } |
525 | ||
526 | ||
527 | /****************************************************************************** | |
528 | * | |
529 | * %allocate-instance (the low level instance allocation primitive) | |
530 | * | |
531 | ******************************************************************************/ | |
532 | ||
398d8ee1 KN |
533 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
534 | (SCM class, SCM initargs), | |
6bcefd15 MG |
535 | "Create a new instance of class @var{class} and initialize it\n" |
536 | "from the arguments @var{initargs}.") | |
398d8ee1 | 537 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda | 538 | { |
b6cf4d02 | 539 | SCM obj; |
e25f3727 | 540 | scm_t_signed_bits n, i; |
b6cf4d02 | 541 | SCM layout; |
80662eda | 542 | |
398d8ee1 | 543 | SCM_VALIDATE_CLASS (1, class); |
80662eda | 544 | |
b6cf4d02 | 545 | /* FIXME: duplicates some of scm_make_struct. */ |
80662eda | 546 | |
92928b86 | 547 | n = SCM_STRUCT_DATA_REF (class, scm_vtable_index_size); |
96a44c1c | 548 | obj = scm_i_alloc_struct (SCM_STRUCT_DATA (class), n); |
6d77c894 | 549 | |
b6cf4d02 AW |
550 | layout = SCM_VTABLE_LAYOUT (class); |
551 | ||
552 | /* Set all SCM-holding slots to unbound */ | |
553 | for (i = 0; i < n; i++) | |
71fc6438 AW |
554 | { |
555 | scm_t_wchar c = scm_i_symbol_ref (layout, i*2); | |
b6cf4d02 AW |
556 | if (c == 'p') |
557 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (SCM_GOOPS_UNBOUND); | |
558 | else if (c == 's') | |
559 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (obj); | |
560 | else | |
561 | SCM_STRUCT_DATA (obj)[i] = 0; | |
80662eda | 562 | } |
6d77c894 | 563 | |
b6cf4d02 | 564 | return obj; |
80662eda | 565 | } |
398d8ee1 | 566 | #undef FUNC_NAME |
80662eda | 567 | |
80662eda MD |
568 | /****************************************************************************** |
569 | * | |
570 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 571 | * |
80662eda MD |
572 | ******************************************************************************/ |
573 | ||
398d8ee1 KN |
574 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
575 | (SCM old, SCM new), | |
576 | "") | |
577 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 578 | { |
398d8ee1 KN |
579 | SCM_VALIDATE_INSTANCE (1, old); |
580 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 581 | |
6d77c894 | 582 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
583 | * scratch the old value with new to be correct with GC. |
584 | * See "Class redefinition protocol above". | |
585 | */ | |
9de87eea | 586 | SCM_CRITICAL_SECTION_START; |
80662eda | 587 | { |
32b12f40 KR |
588 | scm_t_bits word0, word1; |
589 | word0 = SCM_CELL_WORD_0 (old); | |
590 | word1 = SCM_CELL_WORD_1 (old); | |
591 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
592 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
593 | SCM_SET_CELL_WORD_0 (new, word0); | |
594 | SCM_SET_CELL_WORD_1 (new, word1); | |
80662eda | 595 | } |
9de87eea | 596 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
597 | return SCM_UNSPECIFIED; |
598 | } | |
398d8ee1 | 599 | #undef FUNC_NAME |
80662eda | 600 | |
398d8ee1 KN |
601 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
602 | (SCM old, SCM new), | |
603 | "") | |
604 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 605 | { |
398d8ee1 KN |
606 | SCM_VALIDATE_CLASS (1, old); |
607 | SCM_VALIDATE_CLASS (2, new); | |
80662eda | 608 | |
9de87eea | 609 | SCM_CRITICAL_SECTION_START; |
80662eda | 610 | { |
32b12f40 KR |
611 | scm_t_bits word0, word1; |
612 | word0 = SCM_CELL_WORD_0 (old); | |
613 | word1 = SCM_CELL_WORD_1 (old); | |
614 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
615 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
b6cf4d02 | 616 | SCM_STRUCT_DATA (old)[scm_vtable_index_self] = SCM_UNPACK (old); |
32b12f40 KR |
617 | SCM_SET_CELL_WORD_0 (new, word0); |
618 | SCM_SET_CELL_WORD_1 (new, word1); | |
b6cf4d02 | 619 | SCM_STRUCT_DATA (new)[scm_vtable_index_self] = SCM_UNPACK (new); |
80662eda | 620 | } |
9de87eea | 621 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
622 | return SCM_UNSPECIFIED; |
623 | } | |
398d8ee1 | 624 | #undef FUNC_NAME |
80662eda | 625 | |
398d8ee1 KN |
626 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
627 | (SCM class), | |
628 | "") | |
629 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 630 | { |
398d8ee1 | 631 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
632 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
633 | return SCM_UNSPECIFIED; | |
634 | } | |
398d8ee1 | 635 | #undef FUNC_NAME |
80662eda MD |
636 | |
637 | /* When instances change class, they finally get a new body, but | |
638 | * before that, they go through purgatory in hell. Odd as it may | |
639 | * seem, this data structure saves us from eternal suffering in | |
640 | * infinite recursions. | |
641 | */ | |
642 | ||
92c2555f | 643 | static scm_t_bits **hell; |
c014a02e ML |
644 | static long n_hell = 1; /* one place for the evil one himself */ |
645 | static long hell_size = 4; | |
2132f0d2 | 646 | static SCM hell_mutex; |
80662eda | 647 | |
c014a02e | 648 | static long |
80662eda MD |
649 | burnin (SCM o) |
650 | { | |
c014a02e | 651 | long i; |
80662eda | 652 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 653 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
654 | return i; |
655 | return 0; | |
656 | } | |
657 | ||
658 | static void | |
659 | go_to_hell (void *o) | |
660 | { | |
b5df9cda | 661 | SCM obj = *(SCM*)o; |
2132f0d2 | 662 | scm_lock_mutex (hell_mutex); |
51ef99f7 | 663 | if (n_hell >= hell_size) |
80662eda | 664 | { |
51ef99f7 | 665 | hell_size *= 2; |
408bcd99 | 666 | hell = scm_realloc (hell, hell_size * sizeof(*hell)); |
80662eda | 667 | } |
6b80d352 | 668 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 669 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
670 | } |
671 | ||
672 | static void | |
673 | go_to_heaven (void *o) | |
674 | { | |
b5df9cda | 675 | SCM obj = *(SCM*)o; |
2132f0d2 | 676 | scm_lock_mutex (hell_mutex); |
b5df9cda | 677 | hell[burnin (obj)] = hell[--n_hell]; |
2132f0d2 | 678 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
679 | } |
680 | ||
6b80d352 | 681 | |
80662eda | 682 | static SCM |
b5df9cda | 683 | purgatory (SCM obj, SCM new_class) |
80662eda | 684 | { |
b5df9cda | 685 | return scm_call_2 (SCM_VARIABLE_REF (var_change_class), obj, new_class); |
80662eda MD |
686 | } |
687 | ||
38d8927c MD |
688 | /* This function calls the generic function change-class for all |
689 | * instances which aren't currently undergoing class change. | |
690 | */ | |
691 | ||
80662eda | 692 | void |
e81d98ec | 693 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
694 | { |
695 | if (!burnin (obj)) | |
b5df9cda AW |
696 | { |
697 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
698 | scm_dynwind_rewind_handler (go_to_hell, &obj, SCM_F_WIND_EXPLICITLY); | |
699 | scm_dynwind_unwind_handler (go_to_heaven, &obj, SCM_F_WIND_EXPLICITLY); | |
700 | purgatory (obj, new_class); | |
701 | scm_dynwind_end (); | |
702 | } | |
80662eda MD |
703 | } |
704 | ||
705 | /****************************************************************************** | |
706 | * | |
6d77c894 TTN |
707 | * GGGG FFFFF |
708 | * G F | |
709 | * G GG FFF | |
710 | * G G F | |
80662eda MD |
711 | * GGG E N E R I C F U N C T I O N S |
712 | * | |
713 | * This implementation provides | |
714 | * - generic functions (with class specializers) | |
715 | * - multi-methods | |
6d77c894 | 716 | * - next-method |
80662eda MD |
717 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
718 | * | |
719 | ******************************************************************************/ | |
720 | ||
721 | SCM_KEYWORD (k_name, "name"); | |
63c1872f | 722 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 723 | |
398d8ee1 KN |
724 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
725 | (SCM proc), | |
726 | "") | |
727 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 728 | { |
7888309b | 729 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
398d8ee1 | 730 | proc, SCM_ARG1, FUNC_NAME); |
9fdf9fd3 | 731 | return (SCM_PRIMITIVE_GENERIC_P (proc) ? SCM_BOOL_T : SCM_BOOL_F); |
80662eda | 732 | } |
398d8ee1 | 733 | #undef FUNC_NAME |
80662eda | 734 | |
398d8ee1 KN |
735 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
736 | (SCM subrs), | |
737 | "") | |
738 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 739 | { |
6b80d352 | 740 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
d2e53ed6 | 741 | while (!scm_is_null (subrs)) |
80662eda MD |
742 | { |
743 | SCM subr = SCM_CAR (subrs); | |
9fdf9fd3 | 744 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARGn, FUNC_NAME); |
52fd9639 | 745 | SCM_SET_SUBR_GENERIC (subr, |
57898597 | 746 | scm_make (scm_list_3 (class_generic, |
52fd9639 AW |
747 | k_name, |
748 | SCM_SUBR_NAME (subr)))); | |
80662eda MD |
749 | subrs = SCM_CDR (subrs); |
750 | } | |
751 | return SCM_UNSPECIFIED; | |
752 | } | |
398d8ee1 | 753 | #undef FUNC_NAME |
80662eda | 754 | |
9f63ce02 AW |
755 | SCM_DEFINE (scm_set_primitive_generic_x, "set-primitive-generic!", 2, 0, 0, |
756 | (SCM subr, SCM generic), | |
757 | "") | |
758 | #define FUNC_NAME s_scm_set_primitive_generic_x | |
759 | { | |
9fdf9fd3 | 760 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARG1, FUNC_NAME); |
2b7692bc | 761 | SCM_ASSERT (SCM_GENERICP (generic), generic, SCM_ARG2, FUNC_NAME); |
52fd9639 | 762 | SCM_SET_SUBR_GENERIC (subr, generic); |
9f63ce02 AW |
763 | return SCM_UNSPECIFIED; |
764 | } | |
765 | #undef FUNC_NAME | |
766 | ||
398d8ee1 KN |
767 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
768 | (SCM subr), | |
769 | "") | |
770 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda | 771 | { |
9fdf9fd3 | 772 | if (SCM_PRIMITIVE_GENERIC_P (subr)) |
80662eda | 773 | { |
b2b33168 | 774 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr))) |
a48d60b1 MD |
775 | scm_enable_primitive_generic_x (scm_list_1 (subr)); |
776 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 777 | } |
db4b4ca6 | 778 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 779 | } |
398d8ee1 | 780 | #undef FUNC_NAME |
80662eda | 781 | |
fa075d40 AW |
782 | /* Dirk:FIXME:: In all of these scm_wta_dispatch_* routines it is |
783 | * assumed that 'gf' is zero if uninitialized. It would be cleaner if | |
784 | * some valid SCM value like SCM_BOOL_F or SCM_UNDEFINED were chosen. | |
785 | */ | |
786 | ||
787 | SCM | |
788 | scm_wta_dispatch_0 (SCM gf, const char *subr) | |
789 | { | |
790 | if (!SCM_UNPACK (gf)) | |
791 | scm_error_num_args_subr (subr); | |
792 | ||
793 | return scm_call_0 (gf); | |
794 | } | |
795 | ||
796 | SCM | |
797 | scm_wta_dispatch_1 (SCM gf, SCM a1, int pos, const char *subr) | |
798 | { | |
799 | if (!SCM_UNPACK (gf)) | |
800 | scm_wrong_type_arg (subr, pos, a1); | |
801 | ||
802 | return scm_call_1 (gf, a1); | |
803 | } | |
804 | ||
805 | SCM | |
806 | scm_wta_dispatch_2 (SCM gf, SCM a1, SCM a2, int pos, const char *subr) | |
807 | { | |
808 | if (!SCM_UNPACK (gf)) | |
809 | scm_wrong_type_arg (subr, pos, (pos == SCM_ARG1) ? a1 : a2); | |
810 | ||
811 | return scm_call_2 (gf, a1, a2); | |
812 | } | |
813 | ||
814 | SCM | |
815 | scm_wta_dispatch_n (SCM gf, SCM args, int pos, const char *subr) | |
816 | { | |
817 | if (!SCM_UNPACK (gf)) | |
818 | scm_wrong_type_arg (subr, pos, scm_list_ref (args, scm_from_int (pos))); | |
819 | ||
820 | return scm_apply_0 (gf, args); | |
821 | } | |
822 | ||
80662eda | 823 | /****************************************************************************** |
6d77c894 | 824 | * |
80662eda | 825 | * Protocol for calling a generic fumction |
6d77c894 | 826 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
827 | * for efficiency reasons): |
828 | * | |
829 | * + apply-generic (gf args) | |
830 | * + compute-applicable-methods (gf args ...) | |
831 | * + sort-applicable-methods (methods args) | |
832 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
833 | * |
834 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
835 | * method. Applying a next-method will call apply-next-method which in |
836 | * turn will call apply again to call effectively the following method. | |
837 | * | |
838 | ******************************************************************************/ | |
839 | ||
398d8ee1 KN |
840 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
841 | (SCM args), | |
27c37006 | 842 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 843 | "all necessary initialization information.") |
398d8ee1 | 844 | #define FUNC_NAME s_scm_make |
80662eda | 845 | { |
e0590e7c | 846 | return scm_apply_0 (scm_variable_ref (var_make), args); |
80662eda | 847 | } |
398d8ee1 | 848 | #undef FUNC_NAME |
80662eda | 849 | |
80662eda | 850 | |
80662eda MD |
851 | /********************************************************************** |
852 | * | |
853 | * Smob classes | |
854 | * | |
855 | **********************************************************************/ | |
856 | ||
857 | static SCM | |
2e0b6934 | 858 | make_class_name (const char *prefix, const char *type_name, const char *suffix) |
80662eda | 859 | { |
2e0b6934 AW |
860 | if (!type_name) |
861 | type_name = ""; | |
862 | return scm_string_to_symbol (scm_string_append | |
863 | (scm_list_3 (scm_from_utf8_string (prefix), | |
864 | scm_from_utf8_string (type_name), | |
865 | scm_from_utf8_string (suffix)))); | |
80662eda MD |
866 | } |
867 | ||
868 | SCM | |
da0e6c2b | 869 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda | 870 | { |
2e0b6934 AW |
871 | SCM name, meta, supers; |
872 | ||
873 | name = make_class_name ("<", type_name, ">"); | |
874 | meta = class_class; | |
875 | ||
876 | if (applicablep) | |
877 | supers = scm_list_1 (class_applicable); | |
878 | else | |
879 | supers = scm_list_1 (class_top); | |
880 | ||
881 | return scm_make_standard_class (meta, name, supers, SCM_EOL); | |
74b6d6e4 MD |
882 | } |
883 | ||
884 | void | |
885 | scm_i_inherit_applicable (SCM c) | |
886 | { | |
57898597 | 887 | if (!SCM_SUBCLASSP (c, class_applicable)) |
74b6d6e4 MD |
888 | { |
889 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
890 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
57898597 AW |
891 | /* patch class_applicable into direct-supers */ |
892 | SCM top = scm_c_memq (class_top, dsupers); | |
7888309b | 893 | if (scm_is_false (top)) |
74b6d6e4 | 894 | dsupers = scm_append (scm_list_2 (dsupers, |
57898597 | 895 | scm_list_1 (class_applicable))); |
74b6d6e4 MD |
896 | else |
897 | { | |
57898597 AW |
898 | SCM_SETCAR (top, class_applicable); |
899 | SCM_SETCDR (top, scm_cons (class_top, SCM_CDR (top))); | |
74b6d6e4 MD |
900 | } |
901 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
57898597 AW |
902 | /* patch class_applicable into cpl */ |
903 | top = scm_c_memq (class_top, cpl); | |
7888309b | 904 | if (scm_is_false (top)) |
74b6d6e4 MD |
905 | abort (); |
906 | else | |
907 | { | |
57898597 AW |
908 | SCM_SETCAR (top, class_applicable); |
909 | SCM_SETCDR (top, scm_cons (class_top, SCM_CDR (top))); | |
74b6d6e4 | 910 | } |
57898597 AW |
911 | /* add class to direct-subclasses of class_applicable */ |
912 | SCM_SET_SLOT (class_applicable, | |
74b6d6e4 | 913 | scm_si_direct_subclasses, |
57898597 | 914 | scm_cons (c, SCM_SLOT (class_applicable, |
74b6d6e4 MD |
915 | scm_si_direct_subclasses))); |
916 | } | |
80662eda MD |
917 | } |
918 | ||
919 | static void | |
920 | create_smob_classes (void) | |
921 | { | |
c014a02e | 922 | long i; |
80662eda | 923 | |
c891a40e | 924 | for (i = 0; i < SCM_I_MAX_SMOB_TYPE_COUNT; ++i) |
57898597 | 925 | scm_i_smob_class[i] = SCM_BOOL_F; |
80662eda | 926 | |
80662eda | 927 | for (i = 0; i < scm_numsmob; ++i) |
57898597 AW |
928 | if (scm_is_false (scm_i_smob_class[i])) |
929 | scm_i_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), | |
930 | scm_smobs[i].apply != 0); | |
80662eda MD |
931 | } |
932 | ||
933 | void | |
c014a02e | 934 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda | 935 | { |
2e0b6934 AW |
936 | SCM name, meta, super, supers; |
937 | ||
938 | meta = class_class; | |
939 | ||
940 | name = make_class_name ("<", type_name, "-port>"); | |
941 | supers = scm_list_1 (class_port); | |
942 | super = scm_make_standard_class (meta, name, supers, SCM_EOL); | |
943 | ||
944 | name = make_class_name ("<", type_name, "-input-port>"); | |
945 | supers = scm_list_2 (super, class_input_port); | |
57898597 | 946 | scm_i_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2e0b6934 AW |
947 | = scm_make_standard_class (meta, name, supers, SCM_EOL); |
948 | ||
949 | name = make_class_name ("<", type_name, "-output-port>"); | |
950 | supers = scm_list_2 (super, class_output_port); | |
57898597 | 951 | scm_i_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2e0b6934 AW |
952 | = scm_make_standard_class (meta, name, supers, SCM_EOL); |
953 | ||
954 | name = make_class_name ("<", type_name, "-input-output-port>"); | |
955 | supers = scm_list_2 (super, class_input_output_port); | |
57898597 | 956 | scm_i_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2e0b6934 | 957 | = scm_make_standard_class (meta, name, supers, SCM_EOL); |
80662eda MD |
958 | } |
959 | ||
960 | static void | |
961 | create_port_classes (void) | |
962 | { | |
c014a02e | 963 | long i; |
80662eda | 964 | |
62bd5d66 | 965 | for (i = scm_c_num_port_types () - 1; i >= 0; i--) |
80662eda MD |
966 | scm_make_port_classes (i, SCM_PTOBNAME (i)); |
967 | } | |
968 | ||
6c7dd9eb AW |
969 | SCM |
970 | scm_i_define_class_for_vtable (SCM vtable) | |
971 | { | |
972 | SCM class; | |
973 | ||
974 | scm_i_pthread_mutex_lock (&scm_i_misc_mutex); | |
975 | if (scm_is_false (vtable_class_map)) | |
976 | vtable_class_map = scm_c_make_weak_table (0, SCM_WEAK_TABLE_KIND_KEY); | |
977 | scm_i_pthread_mutex_unlock (&scm_i_misc_mutex); | |
978 | ||
979 | if (scm_is_false (scm_struct_vtable_p (vtable))) | |
980 | abort (); | |
981 | ||
982 | class = scm_weak_table_refq (vtable_class_map, vtable, SCM_BOOL_F); | |
983 | ||
984 | if (scm_is_false (class)) | |
985 | { | |
57898597 | 986 | if (SCM_UNPACK (class_class)) |
6c7dd9eb AW |
987 | { |
988 | SCM name, meta, supers; | |
989 | ||
990 | name = SCM_VTABLE_NAME (vtable); | |
991 | if (scm_is_symbol (name)) | |
992 | name = scm_string_to_symbol | |
993 | (scm_string_append | |
994 | (scm_list_3 (scm_from_latin1_string ("<"), | |
995 | scm_symbol_to_string (name), | |
996 | scm_from_latin1_string (">")))); | |
997 | else | |
998 | name = scm_from_latin1_symbol ("<>"); | |
999 | ||
1000 | if (SCM_STRUCT_VTABLE_FLAG_IS_SET (vtable, SCM_VTABLE_FLAG_SETTER)) | |
1001 | { | |
57898597 AW |
1002 | meta = class_applicable_struct_with_setter_class; |
1003 | supers = scm_list_1 (class_applicable_struct_with_setter); | |
6c7dd9eb AW |
1004 | } |
1005 | else if (SCM_STRUCT_VTABLE_FLAG_IS_SET (vtable, | |
1006 | SCM_VTABLE_FLAG_APPLICABLE)) | |
1007 | { | |
57898597 AW |
1008 | meta = class_applicable_struct_class; |
1009 | supers = scm_list_1 (class_applicable_struct); | |
6c7dd9eb AW |
1010 | } |
1011 | else | |
1012 | { | |
57898597 AW |
1013 | meta = class_class; |
1014 | supers = scm_list_1 (class_top); | |
6c7dd9eb AW |
1015 | } |
1016 | ||
1017 | return scm_make_standard_class (meta, name, supers, SCM_EOL); | |
1018 | } | |
1019 | else | |
1020 | /* `create_struct_classes' will fill this in later. */ | |
1021 | class = SCM_BOOL_F; | |
1022 | ||
1023 | /* Don't worry about races. This only happens when creating a | |
1024 | vtable, which happens by definition in one thread. */ | |
1025 | scm_weak_table_putq_x (vtable_class_map, vtable, class); | |
1026 | } | |
1027 | ||
1028 | return class; | |
1029 | } | |
1030 | ||
80662eda | 1031 | static SCM |
74b6d6e4 MD |
1032 | make_struct_class (void *closure SCM_UNUSED, |
1033 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 1034 | { |
f3c6a02c AW |
1035 | if (scm_is_false (data)) |
1036 | scm_i_define_class_for_vtable (vtable); | |
80662eda MD |
1037 | return SCM_UNSPECIFIED; |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | create_struct_classes (void) | |
1042 | { | |
ea742d29 | 1043 | /* FIXME: take the vtable_class_map while initializing goops? */ |
f3c6a02c AW |
1044 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, |
1045 | vtable_class_map); | |
80662eda MD |
1046 | } |
1047 | ||
1048 | /********************************************************************** | |
1049 | * | |
1050 | * C interface | |
1051 | * | |
1052 | **********************************************************************/ | |
1053 | ||
1054 | void | |
1055 | scm_load_goops () | |
1056 | { | |
1057 | if (!goops_loaded_p) | |
abd28220 | 1058 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
1059 | } |
1060 | ||
e11208ca | 1061 | |
e0590e7c AW |
1062 | SCM_KEYWORD (k_setter, "setter"); |
1063 | ||
80662eda MD |
1064 | SCM |
1065 | scm_ensure_accessor (SCM name) | |
1066 | { | |
3f48638c AW |
1067 | SCM var, gf; |
1068 | ||
1069 | var = scm_module_variable (scm_current_module (), name); | |
1070 | if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var))) | |
1071 | gf = SCM_VARIABLE_REF (var); | |
1072 | else | |
1073 | gf = SCM_BOOL_F; | |
1074 | ||
57898597 | 1075 | if (!SCM_IS_A_P (gf, class_accessor)) |
80662eda | 1076 | { |
57898597 AW |
1077 | gf = scm_make (scm_list_3 (class_generic, k_name, name)); |
1078 | gf = scm_make (scm_list_5 (class_accessor, | |
1afff620 | 1079 | k_name, name, k_setter, gf)); |
80662eda | 1080 | } |
3f48638c | 1081 | |
80662eda MD |
1082 | return gf; |
1083 | } | |
1084 | ||
80662eda MD |
1085 | /* |
1086 | * Initialization | |
1087 | */ | |
1088 | ||
6c7dd9eb AW |
1089 | SCM_DEFINE (scm_sys_bless_applicable_struct_vtables_x, "%bless-applicable-struct-vtables!", 2, 0, 0, |
1090 | (SCM applicable, SCM setter), | |
51fd1cd6 | 1091 | "") |
6c7dd9eb | 1092 | #define FUNC_NAME s_scm_sys_bless_applicable_struct_vtables_x |
51fd1cd6 | 1093 | { |
6c7dd9eb AW |
1094 | SCM_VALIDATE_CLASS (1, applicable); |
1095 | SCM_VALIDATE_CLASS (2, setter); | |
1096 | SCM_SET_VTABLE_FLAGS (applicable, SCM_VTABLE_FLAG_APPLICABLE_VTABLE); | |
1097 | SCM_SET_VTABLE_FLAGS (setter, SCM_VTABLE_FLAG_SETTER_VTABLE); | |
51fd1cd6 AW |
1098 | return SCM_UNSPECIFIED; |
1099 | } | |
1100 | #undef FUNC_NAME | |
1101 | ||
82ab5090 AW |
1102 | SCM_DEFINE (scm_sys_goops_early_init, "%goops-early-init", 0, 0, 0, |
1103 | (), | |
1104 | "") | |
1105 | #define FUNC_NAME s_scm_sys_goops_early_init | |
1106 | { | |
51fd1cd6 | 1107 | var_make_standard_class = scm_c_lookup ("make-standard-class"); |
e0590e7c | 1108 | var_make = scm_c_lookup ("make"); |
51fd1cd6 | 1109 | |
ade4cf4c AW |
1110 | var_slot_ref_using_class = scm_c_lookup ("slot-ref-using-class"); |
1111 | var_slot_set_using_class_x = scm_c_lookup ("slot-set-using-class!"); | |
1112 | var_slot_bound_using_class_p = scm_c_lookup ("slot-bound-using-class?"); | |
1113 | var_slot_exists_using_class_p = scm_c_lookup ("slot-exists-using-class?"); | |
1114 | ||
1115 | var_slot_ref = scm_c_lookup ("slot-ref"); | |
1116 | var_slot_set_x = scm_c_lookup ("slot-set!"); | |
1117 | var_slot_bound_p = scm_c_lookup ("slot-bound?"); | |
1118 | var_slot_exists_p = scm_c_lookup ("slot-exists?"); | |
1119 | ||
57898597 AW |
1120 | class_class = scm_variable_ref (scm_c_lookup ("<class>")); |
1121 | class_top = scm_variable_ref (scm_c_lookup ("<top>")); | |
1122 | class_object = scm_variable_ref (scm_c_lookup ("<object>")); | |
1123 | ||
1124 | class_foreign_slot = scm_variable_ref (scm_c_lookup ("<foreign-slot>")); | |
1125 | class_protected = scm_variable_ref (scm_c_lookup ("<protected-slot>")); | |
1126 | class_hidden = scm_variable_ref (scm_c_lookup ("<hidden-slot>")); | |
1127 | class_opaque = scm_variable_ref (scm_c_lookup ("<opaque-slot>")); | |
1128 | class_read_only = scm_variable_ref (scm_c_lookup ("<read-only-slot>")); | |
1129 | class_self = scm_variable_ref (scm_c_lookup ("<self-slot>")); | |
1130 | class_protected_opaque = scm_variable_ref (scm_c_lookup ("<protected-opaque-slot>")); | |
1131 | class_protected_hidden = scm_variable_ref (scm_c_lookup ("<protected-hidden-slot>")); | |
1132 | class_protected_read_only = scm_variable_ref (scm_c_lookup ("<protected-read-only-slot>")); | |
1133 | class_scm = scm_variable_ref (scm_c_lookup ("<scm-slot>")); | |
1134 | class_int = scm_variable_ref (scm_c_lookup ("<int-slot>")); | |
1135 | class_float = scm_variable_ref (scm_c_lookup ("<float-slot>")); | |
1136 | class_double = scm_variable_ref (scm_c_lookup ("<double-slot>")); | |
1137 | ||
1138 | /* Applicables */ | |
1139 | class_procedure_class = scm_variable_ref (scm_c_lookup ("<procedure-class>")); | |
1140 | class_applicable_struct_class = scm_variable_ref (scm_c_lookup ("<applicable-struct-class>")); | |
1141 | class_applicable_struct_with_setter_class = | |
6c7dd9eb | 1142 | scm_variable_ref (scm_c_lookup ("<applicable-struct-with-setter-class>")); |
51fd1cd6 | 1143 | |
57898597 AW |
1144 | class_method = scm_variable_ref (scm_c_lookup ("<method>")); |
1145 | class_accessor_method = scm_variable_ref (scm_c_lookup ("<accessor-method>")); | |
1146 | class_applicable = scm_variable_ref (scm_c_lookup ("<applicable>")); | |
1147 | class_applicable_struct = scm_variable_ref (scm_c_lookup ("<applicable-struct>")); | |
1148 | class_applicable_struct_with_setter = scm_variable_ref (scm_c_lookup ("<applicable-struct-with-setter>")); | |
1149 | class_generic = scm_variable_ref (scm_c_lookup ("<generic>")); | |
1150 | class_extended_generic = scm_variable_ref (scm_c_lookup ("<extended-generic>")); | |
1151 | class_generic_with_setter = scm_variable_ref (scm_c_lookup ("<generic-with-setter>")); | |
1152 | class_accessor = scm_variable_ref (scm_c_lookup ("<accessor>")); | |
1153 | class_extended_generic_with_setter = scm_variable_ref (scm_c_lookup ("<extended-generic-with-setter>")); | |
1154 | class_extended_accessor = scm_variable_ref (scm_c_lookup ("<extended-accessor>")); | |
51fd1cd6 AW |
1155 | |
1156 | /* Primitive types classes */ | |
57898597 AW |
1157 | class_boolean = scm_variable_ref (scm_c_lookup ("<boolean>")); |
1158 | class_char = scm_variable_ref (scm_c_lookup ("<char>")); | |
1159 | class_list = scm_variable_ref (scm_c_lookup ("<list>")); | |
1160 | class_pair = scm_variable_ref (scm_c_lookup ("<pair>")); | |
1161 | class_null = scm_variable_ref (scm_c_lookup ("<null>")); | |
1162 | class_string = scm_variable_ref (scm_c_lookup ("<string>")); | |
1163 | class_symbol = scm_variable_ref (scm_c_lookup ("<symbol>")); | |
1164 | class_vector = scm_variable_ref (scm_c_lookup ("<vector>")); | |
51fd1cd6 AW |
1165 | class_foreign = scm_variable_ref (scm_c_lookup ("<foreign>")); |
1166 | class_hashtable = scm_variable_ref (scm_c_lookup ("<hashtable>")); | |
1167 | class_fluid = scm_variable_ref (scm_c_lookup ("<fluid>")); | |
1168 | class_dynamic_state = scm_variable_ref (scm_c_lookup ("<dynamic-state>")); | |
1169 | class_frame = scm_variable_ref (scm_c_lookup ("<frame>")); | |
1170 | class_vm_cont = scm_variable_ref (scm_c_lookup ("<vm-continuation>")); | |
1171 | class_bytevector = scm_variable_ref (scm_c_lookup ("<bytevector>")); | |
1172 | class_uvec = scm_variable_ref (scm_c_lookup ("<uvec>")); | |
1173 | class_array = scm_variable_ref (scm_c_lookup ("<array>")); | |
1174 | class_bitvector = scm_variable_ref (scm_c_lookup ("<bitvector>")); | |
57898597 AW |
1175 | class_number = scm_variable_ref (scm_c_lookup ("<number>")); |
1176 | class_complex = scm_variable_ref (scm_c_lookup ("<complex>")); | |
1177 | class_real = scm_variable_ref (scm_c_lookup ("<real>")); | |
1178 | class_integer = scm_variable_ref (scm_c_lookup ("<integer>")); | |
1179 | class_fraction = scm_variable_ref (scm_c_lookup ("<fraction>")); | |
1180 | class_keyword = scm_variable_ref (scm_c_lookup ("<keyword>")); | |
1181 | class_unknown = scm_variable_ref (scm_c_lookup ("<unknown>")); | |
1182 | class_procedure = scm_variable_ref (scm_c_lookup ("<procedure>")); | |
1183 | class_primitive_generic = scm_variable_ref (scm_c_lookup ("<primitive-generic>")); | |
1184 | class_port = scm_variable_ref (scm_c_lookup ("<port>")); | |
1185 | class_input_port = scm_variable_ref (scm_c_lookup ("<input-port>")); | |
1186 | class_output_port = scm_variable_ref (scm_c_lookup ("<output-port>")); | |
1187 | class_input_output_port = scm_variable_ref (scm_c_lookup ("<input-output-port>")); | |
51fd1cd6 | 1188 | |
82ab5090 AW |
1189 | create_smob_classes (); |
1190 | create_struct_classes (); | |
1191 | create_port_classes (); | |
1192 | ||
82ab5090 AW |
1193 | return SCM_UNSPECIFIED; |
1194 | } | |
1195 | #undef FUNC_NAME | |
1196 | ||
398d8ee1 KN |
1197 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
1198 | (), | |
6bcefd15 MG |
1199 | "Announce that GOOPS is loaded and perform initialization\n" |
1200 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 1201 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
1202 | { |
1203 | goops_loaded_p = 1; | |
48c981c9 AW |
1204 | var_class_name = scm_c_lookup ("class-name"); |
1205 | var_class_direct_supers = scm_c_lookup ("class-direct-supers"); | |
1206 | var_class_direct_slots = scm_c_lookup ("class-direct-slots"); | |
1207 | var_class_direct_subclasses = scm_c_lookup ("class-direct-subclasses"); | |
1208 | var_class_direct_methods = scm_c_lookup ("class-direct-methods"); | |
1209 | var_class_precedence_list = scm_c_lookup ("class-precedence-list"); | |
1210 | var_class_slots = scm_c_lookup ("class-slots"); | |
1211 | ||
1212 | var_generic_function_methods = scm_c_lookup ("generic-function-methods"); | |
1213 | var_method_generic_function = scm_c_lookup ("method-generic-function"); | |
1214 | var_method_specializers = scm_c_lookup ("method-specializers"); | |
1215 | var_method_procedure = scm_c_lookup ("method-procedure"); | |
1216 | ||
5a6165db | 1217 | var_change_class = scm_c_lookup ("change-class"); |
623559f3 AW |
1218 | |
1219 | #if (SCM_ENABLE_DEPRECATED == 1) | |
1220 | scm_init_deprecated_goops (); | |
1221 | #endif | |
1222 | ||
80662eda MD |
1223 | return SCM_UNSPECIFIED; |
1224 | } | |
398d8ee1 | 1225 | #undef FUNC_NAME |
80662eda MD |
1226 | |
1227 | SCM scm_module_goops; | |
1228 | ||
6ab19396 AW |
1229 | static void |
1230 | scm_init_goops_builtins (void *unused) | |
80662eda | 1231 | { |
abd28220 | 1232 | scm_module_goops = scm_current_module (); |
80662eda | 1233 | |
bb764c0e | 1234 | hell = scm_calloc (hell_size * sizeof (*hell)); |
f39448c5 | 1235 | hell_mutex = scm_make_mutex (); |
80662eda | 1236 | |
82ab5090 | 1237 | #include "libguile/goops.x" |
80662eda MD |
1238 | } |
1239 | ||
1240 | void | |
abd28220 | 1241 | scm_init_goops () |
80662eda | 1242 | { |
6ab19396 AW |
1243 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
1244 | "scm_init_goops_builtins", scm_init_goops_builtins, | |
1245 | NULL); | |
80662eda | 1246 | } |
23437298 DH |
1247 | |
1248 | /* | |
1249 | Local Variables: | |
1250 | c-file-style: "gnu" | |
1251 | End: | |
1252 | */ |