Commit | Line | Data |
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3f48638c | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012 |
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 MD |
32 | #include <stdio.h> |
33 | ||
34 | #include "libguile/_scm.h" | |
35 | #include "libguile/alist.h" | |
4e047c3e | 36 | #include "libguile/async.h" |
539d5410 | 37 | #include "libguile/chars.h" |
80662eda MD |
38 | #include "libguile/debug.h" |
39 | #include "libguile/dynl.h" | |
40 | #include "libguile/dynwind.h" | |
41 | #include "libguile/eval.h" | |
9fdf9fd3 | 42 | #include "libguile/gsubr.h" |
80662eda MD |
43 | #include "libguile/hashtab.h" |
44 | #include "libguile/keywords.h" | |
45 | #include "libguile/macros.h" | |
46 | #include "libguile/modules.h" | |
80662eda MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/procprop.h" | |
efcebb5b | 49 | #include "libguile/programs.h" |
80662eda | 50 | #include "libguile/random.h" |
fdc28395 | 51 | #include "libguile/root.h" |
80662eda MD |
52 | #include "libguile/smob.h" |
53 | #include "libguile/strings.h" | |
54 | #include "libguile/strports.h" | |
55 | #include "libguile/vectors.h" | |
56 | #include "libguile/weaks.h" | |
efcebb5b | 57 | #include "libguile/vm.h" |
80662eda | 58 | |
ca83b028 | 59 | #include "libguile/validate.h" |
80662eda MD |
60 | #include "libguile/goops.h" |
61 | ||
80662eda MD |
62 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
63 | ||
efcebb5b AW |
64 | /* Port classes */ |
65 | #define SCM_IN_PCLASS_INDEX 0 | |
66 | #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT | |
67 | #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT) | |
68 | ||
bef95911 AW |
69 | /* this file is a mess. in theory, though, we shouldn't have many SCM references |
70 | -- most of the references should be to vars. */ | |
71 | ||
72 | static SCM var_slot_unbound = SCM_BOOL_F; | |
73 | static SCM var_slot_missing = SCM_BOOL_F; | |
74 | static SCM var_compute_cpl = SCM_BOOL_F; | |
75 | static SCM var_no_applicable_method = SCM_BOOL_F; | |
bef95911 AW |
76 | static SCM var_change_class = SCM_BOOL_F; |
77 | ||
78 | SCM_SYMBOL (sym_slot_unbound, "slot-unbound"); | |
79 | SCM_SYMBOL (sym_slot_missing, "slot-missing"); | |
80 | SCM_SYMBOL (sym_compute_cpl, "compute-cpl"); | |
81 | SCM_SYMBOL (sym_no_applicable_method, "no-applicable-method"); | |
82 | SCM_SYMBOL (sym_memoize_method_x, "memoize-method!"); | |
83 | SCM_SYMBOL (sym_change_class, "change-class"); | |
84 | ||
85 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
86 | ||
87 | ||
88 | /* FIXME, exports should come from the scm file only */ | |
89 | #define DEFVAR(v, val) \ | |
90 | { scm_module_define (scm_module_goops, (v), (val)); \ | |
91 | scm_module_export (scm_module_goops, scm_list_1 ((v))); \ | |
92 | } | |
93 | ||
80662eda MD |
94 | |
95 | /* Class redefinition protocol: | |
96 | ||
97 | A class is represented by a heap header h1 which points to a | |
98 | malloc:ed memory block m1. | |
99 | ||
100 | When a new version of a class is created, a new header h2 and | |
101 | memory block m2 are allocated. The headers h1 and h2 then switch | |
102 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
103 | bound to h1 will point to the new class at the same time as h2 will | |
7346de61 | 104 | be a handle which the GC will use to free m1. |
80662eda MD |
105 | |
106 | The `redefined' slot of m1 will be set to point to h1. An old | |
7346de61 | 107 | instance will have its class pointer (the CAR of the heap header) |
80662eda MD |
108 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates |
109 | the class modification and the new class pointer can be found via | |
110 | h1. | |
111 | */ | |
112 | ||
0fd7dcd3 MD |
113 | #define TEST_CHANGE_CLASS(obj, class) \ |
114 | { \ | |
115 | class = SCM_CLASS_OF (obj); \ | |
7888309b | 116 | if (scm_is_true (SCM_OBJ_CLASS_REDEF (obj))) \ |
0fd7dcd3 MD |
117 | { \ |
118 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\ | |
119 | class = SCM_CLASS_OF (obj); \ | |
120 | } \ | |
80662eda MD |
121 | } |
122 | ||
123 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
124 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
125 | ||
126 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
d223c3fc | 127 | #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND)) |
80662eda MD |
128 | |
129 | static int goops_loaded_p = 0; | |
92c2555f | 130 | static scm_t_rstate *goops_rstate; |
80662eda | 131 | |
539d5410 MV |
132 | /* These variables are filled in by the object system when loaded. */ |
133 | SCM scm_class_boolean, scm_class_char, scm_class_pair; | |
134 | SCM scm_class_procedure, scm_class_string, scm_class_symbol; | |
ea68d342 | 135 | SCM scm_class_primitive_generic; |
9ea31741 | 136 | SCM scm_class_vector, scm_class_null; |
539d5410 MV |
137 | SCM scm_class_integer, scm_class_real, scm_class_complex, scm_class_fraction; |
138 | SCM scm_class_unknown; | |
80662eda | 139 | SCM scm_class_top, scm_class_object, scm_class_class; |
74b6d6e4 | 140 | SCM scm_class_applicable; |
51f66c91 | 141 | SCM scm_class_applicable_struct, scm_class_applicable_struct_with_setter; |
bbf8d523 | 142 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 143 | SCM scm_class_accessor; |
bbf8d523 | 144 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 145 | SCM scm_class_extended_accessor; |
bbf8d523 | 146 | SCM scm_class_method; |
51f66c91 | 147 | SCM scm_class_accessor_method; |
80662eda | 148 | SCM scm_class_procedure_class; |
51f66c91 | 149 | SCM scm_class_applicable_struct_class; |
80662eda MD |
150 | SCM scm_class_number, scm_class_list; |
151 | SCM scm_class_keyword; | |
152 | SCM scm_class_port, scm_class_input_output_port; | |
153 | SCM scm_class_input_port, scm_class_output_port; | |
80662eda MD |
154 | SCM scm_class_foreign_slot; |
155 | SCM scm_class_self, scm_class_protected; | |
b6cf4d02 AW |
156 | SCM scm_class_hidden, scm_class_opaque, scm_class_read_only; |
157 | SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_read_only; | |
80662eda MD |
158 | SCM scm_class_scm; |
159 | SCM scm_class_int, scm_class_float, scm_class_double; | |
160 | ||
e2c2a699 | 161 | static SCM class_foreign; |
9ea31741 AW |
162 | static SCM class_hashtable; |
163 | static SCM class_fluid; | |
164 | static SCM class_dynamic_state; | |
6f3b0cc2 AW |
165 | static SCM class_frame; |
166 | static SCM class_objcode; | |
167 | static SCM class_vm; | |
168 | static SCM class_vm_cont; | |
f826a886 AW |
169 | static SCM class_bytevector; |
170 | static SCM class_uvec; | |
b2637c98 | 171 | static SCM class_array; |
ff1feca9 | 172 | static SCM class_bitvector; |
9ea31741 | 173 | |
f3c6a02c | 174 | static SCM vtable_class_map = SCM_BOOL_F; |
ea742d29 | 175 | static scm_i_pthread_mutex_t vtable_class_map_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
f3c6a02c | 176 | |
63385df2 LC |
177 | /* Port classes. Allocate 3 times the maximum number of port types so that |
178 | input ports, output ports, and in/out ports can be stored at different | |
179 | offsets. See `SCM_IN_PCLASS_INDEX' et al. */ | |
180 | SCM scm_port_class[3 * SCM_I_MAX_PORT_TYPE_COUNT]; | |
181 | ||
182 | /* SMOB classes. */ | |
47455469 | 183 | SCM scm_smob_class[SCM_I_MAX_SMOB_TYPE_COUNT]; |
539d5410 MV |
184 | |
185 | SCM scm_no_applicable_method; | |
186 | ||
80662eda MD |
187 | SCM_SYMBOL (scm_sym_define_public, "define-public"); |
188 | ||
189 | static SCM scm_make_unbound (void); | |
190 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
191 | static SCM scm_assert_bound (SCM value, SCM obj); |
192 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
193 | static SCM scm_sys_goops_loaded (void); | |
9db8cf16 MG |
194 | static SCM scm_make_extended_class_from_symbol (SCM type_name_sym, |
195 | int applicablep); | |
80662eda | 196 | |
f3c6a02c AW |
197 | |
198 | SCM | |
199 | scm_i_define_class_for_vtable (SCM vtable) | |
200 | { | |
201 | SCM class; | |
202 | ||
ea742d29 AW |
203 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); |
204 | ||
f3c6a02c AW |
205 | if (scm_is_false (vtable_class_map)) |
206 | vtable_class_map = scm_make_weak_key_hash_table (SCM_UNDEFINED); | |
207 | ||
208 | if (scm_is_false (scm_struct_vtable_p (vtable))) | |
209 | abort (); | |
210 | ||
211 | class = scm_hashq_ref (vtable_class_map, vtable, SCM_BOOL_F); | |
212 | ||
ea742d29 AW |
213 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
214 | ||
f3c6a02c AW |
215 | if (scm_is_false (class)) |
216 | { | |
217 | if (SCM_UNPACK (scm_class_class)) | |
218 | { | |
219 | SCM name = SCM_VTABLE_NAME (vtable); | |
220 | if (!scm_is_symbol (name)) | |
221 | name = scm_string_to_symbol (scm_nullstr); | |
222 | ||
223 | class = scm_make_extended_class_from_symbol | |
224 | (name, SCM_VTABLE_FLAG_IS_SET (vtable, SCM_VTABLE_FLAG_APPLICABLE)); | |
225 | } | |
226 | else | |
227 | /* `create_struct_classes' will fill this in later. */ | |
228 | class = SCM_BOOL_F; | |
ea742d29 AW |
229 | |
230 | /* Don't worry about races. This only happens when creating a | |
231 | vtable, which happens by definition in one thread. */ | |
232 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); | |
f3c6a02c | 233 | scm_hashq_set_x (vtable_class_map, vtable, class); |
ea742d29 | 234 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
f3c6a02c AW |
235 | } |
236 | ||
237 | return class; | |
238 | } | |
239 | ||
539d5410 MV |
240 | /* This function is used for efficient type dispatch. */ |
241 | SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0, | |
242 | (SCM x), | |
243 | "Return the class of @var{x}.") | |
244 | #define FUNC_NAME s_scm_class_of | |
245 | { | |
246 | switch (SCM_ITAG3 (x)) | |
247 | { | |
248 | case scm_tc3_int_1: | |
249 | case scm_tc3_int_2: | |
250 | return scm_class_integer; | |
251 | ||
252 | case scm_tc3_imm24: | |
253 | if (SCM_CHARP (x)) | |
254 | return scm_class_char; | |
255 | else if (scm_is_bool (x)) | |
256 | return scm_class_boolean; | |
257 | else if (scm_is_null (x)) | |
258 | return scm_class_null; | |
259 | else | |
260 | return scm_class_unknown; | |
261 | ||
262 | case scm_tc3_cons: | |
263 | switch (SCM_TYP7 (x)) | |
264 | { | |
265 | case scm_tcs_cons_nimcar: | |
266 | return scm_class_pair; | |
539d5410 MV |
267 | case scm_tc7_symbol: |
268 | return scm_class_symbol; | |
269 | case scm_tc7_vector: | |
270 | case scm_tc7_wvect: | |
271 | return scm_class_vector; | |
5b46a8c2 | 272 | case scm_tc7_pointer: |
e2c2a699 | 273 | return class_foreign; |
c99de5aa | 274 | case scm_tc7_hashtable: |
9ea31741 AW |
275 | return class_hashtable; |
276 | case scm_tc7_fluid: | |
277 | return class_fluid; | |
278 | case scm_tc7_dynamic_state: | |
279 | return class_dynamic_state; | |
6f3b0cc2 AW |
280 | case scm_tc7_frame: |
281 | return class_frame; | |
282 | case scm_tc7_objcode: | |
283 | return class_objcode; | |
284 | case scm_tc7_vm: | |
285 | return class_vm; | |
286 | case scm_tc7_vm_cont: | |
287 | return class_vm_cont; | |
f826a886 AW |
288 | case scm_tc7_bytevector: |
289 | if (SCM_BYTEVECTOR_ELEMENT_TYPE (x) == SCM_ARRAY_ELEMENT_TYPE_VU8) | |
290 | return class_bytevector; | |
291 | else | |
292 | return class_uvec; | |
b2637c98 AW |
293 | case scm_tc7_array: |
294 | return class_array; | |
ff1feca9 AW |
295 | case scm_tc7_bitvector: |
296 | return class_bitvector; | |
539d5410 MV |
297 | case scm_tc7_string: |
298 | return scm_class_string; | |
299 | case scm_tc7_number: | |
300 | switch SCM_TYP16 (x) { | |
301 | case scm_tc16_big: | |
302 | return scm_class_integer; | |
303 | case scm_tc16_real: | |
304 | return scm_class_real; | |
305 | case scm_tc16_complex: | |
306 | return scm_class_complex; | |
307 | case scm_tc16_fraction: | |
308 | return scm_class_fraction; | |
309 | } | |
2fb924f6 | 310 | case scm_tc7_program: |
b2b33168 AW |
311 | if (SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x) |
312 | && SCM_UNPACK (*SCM_SUBR_GENERIC (x))) | |
fd12a19a AW |
313 | return scm_class_primitive_generic; |
314 | else | |
315 | return scm_class_procedure; | |
539d5410 MV |
316 | |
317 | case scm_tc7_smob: | |
318 | { | |
319 | scm_t_bits type = SCM_TYP16 (x); | |
320 | if (type != scm_tc16_port_with_ps) | |
321 | return scm_smob_class[SCM_TC2SMOBNUM (type)]; | |
322 | x = SCM_PORT_WITH_PS_PORT (x); | |
323 | /* fall through to ports */ | |
324 | } | |
325 | case scm_tc7_port: | |
326 | return scm_port_class[(SCM_WRTNG & SCM_CELL_WORD_0 (x) | |
327 | ? (SCM_RDNG & SCM_CELL_WORD_0 (x) | |
328 | ? SCM_INOUT_PCLASS_INDEX | SCM_PTOBNUM (x) | |
329 | : SCM_OUT_PCLASS_INDEX | SCM_PTOBNUM (x)) | |
330 | : SCM_IN_PCLASS_INDEX | SCM_PTOBNUM (x))]; | |
331 | case scm_tcs_struct: | |
332 | if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS_VALID) | |
333 | return SCM_CLASS_OF (x); | |
334 | else if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS) | |
335 | { | |
336 | /* Goops object */ | |
337 | if (! scm_is_false (SCM_OBJ_CLASS_REDEF (x))) | |
338 | scm_change_object_class (x, | |
339 | SCM_CLASS_OF (x), /* old */ | |
340 | SCM_OBJ_CLASS_REDEF (x)); /* new */ | |
341 | return SCM_CLASS_OF (x); | |
342 | } | |
343 | else | |
f3c6a02c | 344 | return scm_i_define_class_for_vtable (SCM_CLASS_OF (x)); |
539d5410 MV |
345 | default: |
346 | if (scm_is_pair (x)) | |
347 | return scm_class_pair; | |
348 | else | |
349 | return scm_class_unknown; | |
350 | } | |
351 | ||
352 | case scm_tc3_struct: | |
353 | case scm_tc3_tc7_1: | |
354 | case scm_tc3_tc7_2: | |
314b8716 | 355 | /* case scm_tc3_unused: */ |
539d5410 MV |
356 | /* Never reached */ |
357 | break; | |
358 | } | |
359 | return scm_class_unknown; | |
360 | } | |
361 | #undef FUNC_NAME | |
362 | ||
80662eda MD |
363 | /****************************************************************************** |
364 | * | |
365 | * Compute-cpl | |
366 | * | |
bbf8d523 MD |
367 | * This version doesn't fully handle multiple-inheritance. It serves |
368 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
369 | * |
370 | ******************************************************************************/ | |
371 | ||
80662eda MD |
372 | static SCM |
373 | map (SCM (*proc) (SCM), SCM ls) | |
374 | { | |
d2e53ed6 | 375 | if (scm_is_null (ls)) |
80662eda | 376 | return ls; |
6b80d352 DH |
377 | else |
378 | { | |
379 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
380 | SCM h = res; | |
381 | ls = SCM_CDR (ls); | |
13d807b7 | 382 | while (scm_is_pair (ls)) |
6b80d352 DH |
383 | { |
384 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
385 | h = SCM_CDR (h); | |
386 | ls = SCM_CDR (ls); | |
387 | } | |
388 | return res; | |
389 | } | |
80662eda MD |
390 | } |
391 | ||
392 | static SCM | |
393 | filter_cpl (SCM ls) | |
394 | { | |
395 | SCM res = SCM_EOL; | |
13d807b7 | 396 | while (scm_is_pair (ls)) |
80662eda MD |
397 | { |
398 | SCM el = SCM_CAR (ls); | |
7888309b | 399 | if (scm_is_false (scm_c_memq (el, res))) |
80662eda MD |
400 | res = scm_cons (el, res); |
401 | ls = SCM_CDR (ls); | |
402 | } | |
403 | return res; | |
404 | } | |
405 | ||
406 | static SCM | |
407 | compute_cpl (SCM class) | |
408 | { | |
409 | if (goops_loaded_p) | |
bef95911 | 410 | return scm_call_1 (SCM_VARIABLE_REF (var_compute_cpl), class); |
80662eda MD |
411 | else |
412 | { | |
413 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
414 | SCM ls = scm_append (scm_acons (class, supers, | |
415 | map (compute_cpl, supers))); | |
416 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
417 | } | |
418 | } | |
419 | ||
420 | /****************************************************************************** | |
421 | * | |
422 | * compute-slots | |
423 | * | |
424 | ******************************************************************************/ | |
425 | ||
426 | static SCM | |
427 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
428 | { | |
429 | SCM tmp; | |
430 | ||
13d807b7 | 431 | if (!scm_is_pair (l)) |
80662eda MD |
432 | return res; |
433 | ||
434 | tmp = SCM_CAAR (l); | |
cc95e00a | 435 | if (!scm_is_symbol (tmp)) |
1afff620 | 436 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 437 | |
7888309b | 438 | if (scm_is_false (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
439 | res = scm_cons (SCM_CAR (l), res); |
440 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
441 | } | |
6d77c894 | 442 | |
80662eda MD |
443 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
444 | } | |
445 | ||
13d807b7 AW |
446 | static void |
447 | check_cpl (SCM slots, SCM bslots) | |
448 | { | |
449 | for (; scm_is_pair (bslots); bslots = SCM_CDR (bslots)) | |
450 | if (scm_is_true (scm_assq (SCM_CAAR (bslots), slots))) | |
451 | scm_misc_error ("init-object", "a predefined <class> inherited " | |
452 | "field cannot be redefined", SCM_EOL); | |
453 | } | |
454 | ||
455 | static SCM | |
456 | build_class_class_slots (void); | |
457 | ||
80662eda MD |
458 | static SCM |
459 | build_slots_list (SCM dslots, SCM cpl) | |
460 | { | |
13d807b7 AW |
461 | SCM bslots, class_slots; |
462 | int classp; | |
463 | SCM res = dslots; | |
464 | ||
465 | class_slots = SCM_EOL; | |
466 | classp = scm_is_true (scm_memq (scm_class_class, cpl)); | |
467 | ||
468 | if (classp) | |
469 | { | |
470 | bslots = build_class_class_slots (); | |
471 | check_cpl (res, bslots); | |
472 | } | |
473 | else | |
474 | bslots = SCM_EOL; | |
475 | ||
476 | if (scm_is_pair (cpl)) | |
477 | { | |
478 | for (cpl = SCM_CDR (cpl); scm_is_pair (cpl); cpl = SCM_CDR (cpl)) | |
479 | { | |
480 | SCM new_slots = SCM_SLOT (SCM_CAR (cpl), | |
481 | scm_si_direct_slots); | |
482 | if (classp) | |
483 | { | |
484 | if (!scm_is_eq (SCM_CAR (cpl), scm_class_class)) | |
485 | check_cpl (new_slots, bslots); | |
486 | else | |
487 | { | |
488 | /* Move class slots to the head of the list. */ | |
489 | class_slots = new_slots; | |
490 | continue; | |
491 | } | |
492 | } | |
493 | res = scm_append (scm_list_2 (new_slots, res)); | |
494 | } | |
495 | } | |
496 | else | |
497 | scm_misc_error ("%compute-slots", "malformed cpl argument in " | |
498 | "build_slots_list", SCM_EOL); | |
80662eda | 499 | |
13d807b7 AW |
500 | /* make sure to add the <class> slots to the head of the list */ |
501 | if (classp) | |
502 | res = scm_append (scm_list_2 (class_slots, res)); | |
80662eda MD |
503 | |
504 | /* res contains a list of slots. Remove slots which appears more than once */ | |
505 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
506 | } | |
507 | ||
508 | static SCM | |
509 | maplist (SCM ls) | |
510 | { | |
511 | SCM orig = ls; | |
d2e53ed6 | 512 | while (!scm_is_null (ls)) |
80662eda | 513 | { |
13d807b7 AW |
514 | if (!scm_is_pair (ls)) |
515 | scm_misc_error ("%compute-slots", "malformed ls argument in " | |
516 | "maplist", SCM_EOL); | |
d2e53ed6 | 517 | if (!scm_is_pair (SCM_CAR (ls))) |
13d807b7 | 518 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
80662eda MD |
519 | ls = SCM_CDR (ls); |
520 | } | |
521 | return orig; | |
522 | } | |
523 | ||
80662eda | 524 | |
23437298 DH |
525 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
526 | (SCM class), | |
5352393c MG |
527 | "Return a list consisting of the names of all slots belonging to\n" |
528 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 529 | "its superclasses.") |
23437298 | 530 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 531 | { |
398d8ee1 | 532 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
533 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
534 | SCM_SLOT (class, scm_si_cpl)); | |
535 | } | |
23437298 DH |
536 | #undef FUNC_NAME |
537 | ||
80662eda MD |
538 | |
539 | /****************************************************************************** | |
540 | * | |
541 | * compute-getters-n-setters | |
6d77c894 TTN |
542 | * |
543 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 544 | * classes and will be overloaded in Scheme. |
80662eda MD |
545 | * |
546 | ******************************************************************************/ | |
547 | ||
548 | SCM_KEYWORD (k_init_value, "init-value"); | |
549 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
550 | ||
551 | static SCM | |
552 | compute_getters_n_setters (SCM slots) | |
553 | { | |
554 | SCM res = SCM_EOL; | |
555 | SCM *cdrloc = &res; | |
c014a02e | 556 | long i = 0; |
80662eda | 557 | |
d2e53ed6 | 558 | for ( ; !scm_is_null (slots); slots = SCM_CDR (slots)) |
80662eda MD |
559 | { |
560 | SCM init = SCM_BOOL_F; | |
561 | SCM options = SCM_CDAR (slots); | |
d2e53ed6 | 562 | if (!scm_is_null (options)) |
80662eda | 563 | { |
b2b33168 AW |
564 | init = scm_get_keyword (k_init_value, options, SCM_PACK (0)); |
565 | if (SCM_UNPACK (init)) | |
366ecaec | 566 | { |
9d019f9b AW |
567 | init = scm_primitive_eval (scm_list_3 (scm_sym_lambda, |
568 | SCM_EOL, | |
569 | scm_list_2 (scm_sym_quote, | |
570 | init))); | |
366ecaec | 571 | } |
80662eda MD |
572 | else |
573 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
574 | } | |
575 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
576 | scm_cons (init, | |
e11e83f3 | 577 | scm_from_int (i++))), |
80662eda MD |
578 | SCM_EOL); |
579 | cdrloc = SCM_CDRLOC (*cdrloc); | |
580 | } | |
581 | return res; | |
582 | } | |
583 | ||
584 | /****************************************************************************** | |
585 | * | |
586 | * initialize-object | |
587 | * | |
588 | ******************************************************************************/ | |
589 | ||
590 | /*fixme* Manufacture keywords in advance */ | |
591 | SCM | |
c014a02e | 592 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 593 | { |
c014a02e | 594 | long i; |
23437298 DH |
595 | |
596 | for (i = 0; i != len; i += 2) | |
80662eda | 597 | { |
23437298 DH |
598 | SCM obj = SCM_CAR (l); |
599 | ||
c598539a | 600 | if (!scm_is_keyword (obj)) |
1afff620 | 601 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
bc36d050 | 602 | else if (scm_is_eq (obj, key)) |
80662eda | 603 | return SCM_CADR (l); |
23437298 DH |
604 | else |
605 | l = SCM_CDDR (l); | |
80662eda | 606 | } |
23437298 | 607 | |
80662eda MD |
608 | return default_value; |
609 | } | |
610 | ||
80662eda | 611 | |
23437298 DH |
612 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
613 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
614 | "Determine an associated value for the keyword @var{key} from\n" |
615 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
616 | "number of elements, where, starting with the first, every\n" | |
617 | "second element is a keyword, followed by its associated value.\n" | |
618 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
619 | "@var{default_value} is returned.") | |
23437298 | 620 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 621 | { |
c014a02e | 622 | long len; |
23437298 | 623 | |
c598539a | 624 | SCM_ASSERT (scm_is_keyword (key), key, SCM_ARG1, FUNC_NAME); |
80662eda | 625 | len = scm_ilength (l); |
b6311c08 | 626 | if (len < 0 || len % 2 == 1) |
1afff620 | 627 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
628 | |
629 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 630 | } |
23437298 DH |
631 | #undef FUNC_NAME |
632 | ||
80662eda | 633 | |
80662eda MD |
634 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
635 | ||
636 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
637 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
638 | ||
398d8ee1 KN |
639 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
640 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
641 | "Initialize the object @var{obj} with the given arguments\n" |
642 | "@var{initargs}.") | |
398d8ee1 | 643 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
644 | { |
645 | SCM tmp, get_n_set, slots; | |
646 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 647 | long n_initargs; |
80662eda | 648 | |
398d8ee1 | 649 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 650 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 651 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 652 | |
80662eda MD |
653 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
654 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 655 | |
80662eda MD |
656 | /* See for each slot how it must be initialized */ |
657 | for (; | |
d2e53ed6 | 658 | !scm_is_null (slots); |
80662eda MD |
659 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
660 | { | |
661 | SCM slot_name = SCM_CAR (slots); | |
b2b33168 | 662 | SCM slot_value = SCM_PACK (0); |
6d77c894 | 663 | |
d2e53ed6 | 664 | if (!scm_is_null (SCM_CDR (slot_name))) |
80662eda MD |
665 | { |
666 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 667 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 668 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 669 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 670 | scm_list_1 (slot_name)); |
80662eda MD |
671 | tmp = scm_i_get_keyword (k_init_keyword, |
672 | SCM_CDR (slot_name), | |
673 | n, | |
b2b33168 | 674 | SCM_PACK (0), |
398d8ee1 | 675 | FUNC_NAME); |
80662eda | 676 | slot_name = SCM_CAR (slot_name); |
b2b33168 | 677 | if (SCM_UNPACK (tmp)) |
80662eda MD |
678 | { |
679 | /* an initarg was provided for this slot */ | |
c598539a | 680 | if (!scm_is_keyword (tmp)) |
398d8ee1 | 681 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 682 | scm_list_1 (tmp)); |
80662eda MD |
683 | slot_value = scm_i_get_keyword (tmp, |
684 | initargs, | |
685 | n_initargs, | |
b2b33168 | 686 | SCM_PACK (0), |
398d8ee1 | 687 | FUNC_NAME); |
80662eda MD |
688 | } |
689 | } | |
690 | ||
b2b33168 | 691 | if (SCM_UNPACK (slot_value)) |
80662eda MD |
692 | /* set slot to provided value */ |
693 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
694 | else | |
695 | { | |
696 | /* set slot to its :init-form if it exists */ | |
697 | tmp = SCM_CADAR (get_n_set); | |
7888309b | 698 | if (scm_is_true (tmp)) |
80662eda MD |
699 | { |
700 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
701 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
fd7ac322 AW |
702 | set_slot_value (class, |
703 | obj, | |
704 | SCM_CAR (get_n_set), | |
705 | scm_call_0 (tmp)); | |
80662eda MD |
706 | } |
707 | } | |
708 | } | |
6d77c894 | 709 | |
80662eda MD |
710 | return obj; |
711 | } | |
398d8ee1 | 712 | #undef FUNC_NAME |
80662eda | 713 | |
21ab2aeb MD |
714 | /* NOTE: The following macros are interdependent with code |
715 | * in goops.scm:compute-getters-n-setters | |
716 | */ | |
717 | #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \ | |
e11e83f3 | 718 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
d2e53ed6 MV |
719 | || (scm_is_pair (SCM_CDDR (gns)) \ |
720 | && scm_is_pair (SCM_CDDDR (gns)) \ | |
721 | && scm_is_pair (SCM_CDDDDR (gns)))) | |
21ab2aeb | 722 | #define SCM_GNS_INDEX(gns) \ |
e11e83f3 MV |
723 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
724 | ? SCM_I_INUM (SCM_CDDR (gns)) \ | |
725 | : scm_to_long (SCM_CAR (SCM_CDDDDR (gns)))) | |
21ab2aeb | 726 | #define SCM_GNS_SIZE(gns) \ |
e11e83f3 | 727 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
21ab2aeb | 728 | ? 1 \ |
e11e83f3 | 729 | : scm_to_long (SCM_CADR (SCM_CDDDDR (gns)))) |
80662eda MD |
730 | |
731 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
732 | SCM_KEYWORD (k_allocation, "allocation"); |
733 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 734 | |
398d8ee1 KN |
735 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
736 | (SCM class), | |
737 | "") | |
738 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 739 | { |
21ab2aeb | 740 | SCM slots, getters_n_setters, nfields; |
6b80d352 DH |
741 | unsigned long int n, i; |
742 | char *s; | |
cc95e00a | 743 | SCM layout; |
80662eda | 744 | |
398d8ee1 | 745 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda | 746 | slots = SCM_SLOT (class, scm_si_slots); |
21ab2aeb | 747 | getters_n_setters = SCM_SLOT (class, scm_si_getters_n_setters); |
80662eda | 748 | nfields = SCM_SLOT (class, scm_si_nfields); |
e11e83f3 | 749 | if (!SCM_I_INUMP (nfields) || SCM_I_INUM (nfields) < 0) |
398d8ee1 | 750 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 751 | scm_list_1 (nfields)); |
e11e83f3 | 752 | n = 2 * SCM_I_INUM (nfields); |
80662eda MD |
753 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 |
754 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 755 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 756 | scm_list_1 (nfields)); |
6d77c894 | 757 | |
190d4b0d | 758 | layout = scm_i_make_string (n, &s, 0); |
21ab2aeb | 759 | i = 0; |
d2e53ed6 | 760 | while (scm_is_pair (getters_n_setters)) |
80662eda | 761 | { |
21ab2aeb | 762 | if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters))) |
b46fae00 | 763 | { |
21ab2aeb MD |
764 | SCM type; |
765 | int len, index, size; | |
766 | char p, a; | |
767 | ||
d2e53ed6 | 768 | if (i >= n || !scm_is_pair (slots)) |
21ab2aeb MD |
769 | goto inconsistent; |
770 | ||
771 | /* extract slot type */ | |
b46fae00 | 772 | len = scm_ilength (SCM_CDAR (slots)); |
21ab2aeb MD |
773 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), |
774 | len, SCM_BOOL_F, FUNC_NAME); | |
775 | /* determine slot GC protection and access mode */ | |
7888309b | 776 | if (scm_is_false (type)) |
6b80d352 | 777 | { |
21ab2aeb MD |
778 | p = 'p'; |
779 | a = 'w'; | |
6b80d352 DH |
780 | } |
781 | else | |
782 | { | |
21ab2aeb | 783 | if (!SCM_CLASSP (type)) |
cc95e00a | 784 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); |
21ab2aeb MD |
785 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) |
786 | { | |
787 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
788 | p = 's'; | |
789 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
790 | p = 'p'; | |
791 | else | |
792 | p = 'u'; | |
793 | ||
794 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
795 | a = 'o'; | |
796 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
797 | a = 'r'; | |
b6cf4d02 AW |
798 | else if (SCM_SUBCLASSP (type, scm_class_hidden)) |
799 | a = 'h'; | |
21ab2aeb MD |
800 | else |
801 | a = 'w'; | |
802 | } | |
803 | else | |
804 | { | |
805 | p = 'p'; | |
806 | a = 'w'; | |
807 | } | |
808 | } | |
809 | ||
810 | index = SCM_GNS_INDEX (SCM_CAR (getters_n_setters)); | |
811 | if (index != (i >> 1)) | |
812 | goto inconsistent; | |
813 | size = SCM_GNS_SIZE (SCM_CAR (getters_n_setters)); | |
814 | while (size) | |
815 | { | |
816 | s[i++] = p; | |
817 | s[i++] = a; | |
818 | --size; | |
6b80d352 | 819 | } |
80662eda | 820 | } |
80662eda | 821 | slots = SCM_CDR (slots); |
21ab2aeb MD |
822 | getters_n_setters = SCM_CDR (getters_n_setters); |
823 | } | |
d2e53ed6 | 824 | if (!scm_is_null (slots)) |
21ab2aeb MD |
825 | { |
826 | inconsistent: | |
21ab2aeb | 827 | SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL); |
80662eda | 828 | } |
b6cf4d02 | 829 | SCM_SET_VTABLE_LAYOUT (class, scm_string_to_symbol (layout)); |
80662eda MD |
830 | return SCM_UNSPECIFIED; |
831 | } | |
398d8ee1 | 832 | #undef FUNC_NAME |
80662eda MD |
833 | |
834 | static void prep_hashsets (SCM); | |
835 | ||
398d8ee1 KN |
836 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
837 | (SCM class, SCM dsupers), | |
838 | "") | |
839 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda | 840 | { |
398d8ee1 | 841 | SCM_VALIDATE_INSTANCE (1, class); |
51f66c91 AW |
842 | scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class); |
843 | SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID); | |
80662eda MD |
844 | |
845 | prep_hashsets (class); | |
6d77c894 | 846 | |
80662eda MD |
847 | return SCM_UNSPECIFIED; |
848 | } | |
398d8ee1 | 849 | #undef FUNC_NAME |
80662eda | 850 | |
63c1872f | 851 | static void |
80662eda MD |
852 | prep_hashsets (SCM class) |
853 | { | |
dcb410ec | 854 | unsigned int i; |
80662eda | 855 | |
e161c9f8 | 856 | for (i = 0; i < 8; ++i) |
dcb410ec | 857 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
858 | } |
859 | ||
860 | /******************************************************************************/ | |
861 | ||
862 | SCM | |
863 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
864 | { | |
865 | SCM z, cpl, slots, nfields, g_n_s; | |
866 | ||
867 | /* Allocate one instance */ | |
868 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
869 | ||
870 | /* Initialize its slots */ | |
dcb410ec | 871 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
872 | cpl = compute_cpl (z); |
873 | slots = build_slots_list (maplist (dslots), cpl); | |
e11e83f3 | 874 | nfields = scm_from_int (scm_ilength (slots)); |
80662eda MD |
875 | g_n_s = compute_getters_n_setters (slots); |
876 | ||
b6cf4d02 | 877 | SCM_SET_SLOT (z, scm_vtable_index_name, name); |
dcb410ec DH |
878 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); |
879 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
880 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
881 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
882 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
883 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
884 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
885 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
886 | |
887 | /* Add this class in the direct-subclasses slot of dsupers */ | |
888 | { | |
889 | SCM tmp; | |
d2e53ed6 | 890 | for (tmp = dsupers; !scm_is_null (tmp); tmp = SCM_CDR (tmp)) |
dcb410ec DH |
891 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, |
892 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
893 | scm_si_direct_subclasses))); | |
80662eda MD |
894 | } |
895 | ||
80662eda MD |
896 | return z; |
897 | } | |
898 | ||
899 | SCM | |
900 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
901 | { | |
902 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
80662eda | 903 | scm_sys_prep_layout_x (z); |
51f66c91 | 904 | scm_sys_inherit_magic_x (z, dsupers); |
80662eda MD |
905 | return z; |
906 | } | |
907 | ||
908 | /******************************************************************************/ | |
909 | ||
6b80d352 | 910 | SCM_SYMBOL (sym_layout, "layout"); |
b6cf4d02 AW |
911 | SCM_SYMBOL (sym_flags, "flags"); |
912 | SCM_SYMBOL (sym_self, "%self"); | |
913 | SCM_SYMBOL (sym_instance_finalizer, "instance-finalizer"); | |
914 | SCM_SYMBOL (sym_reserved_0, "%reserved-0"); | |
915 | SCM_SYMBOL (sym_reserved_1, "%reserved-1"); | |
6b80d352 DH |
916 | SCM_SYMBOL (sym_print, "print"); |
917 | SCM_SYMBOL (sym_procedure, "procedure"); | |
918 | SCM_SYMBOL (sym_setter, "setter"); | |
919 | SCM_SYMBOL (sym_redefined, "redefined"); | |
920 | SCM_SYMBOL (sym_h0, "h0"); | |
921 | SCM_SYMBOL (sym_h1, "h1"); | |
922 | SCM_SYMBOL (sym_h2, "h2"); | |
923 | SCM_SYMBOL (sym_h3, "h3"); | |
924 | SCM_SYMBOL (sym_h4, "h4"); | |
925 | SCM_SYMBOL (sym_h5, "h5"); | |
926 | SCM_SYMBOL (sym_h6, "h6"); | |
927 | SCM_SYMBOL (sym_h7, "h7"); | |
928 | SCM_SYMBOL (sym_name, "name"); | |
929 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
930 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
931 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
932 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
933 | SCM_SYMBOL (sym_cpl, "cpl"); | |
934 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
935 | SCM_SYMBOL (sym_slots, "slots"); | |
936 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
937 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
938 | SCM_SYMBOL (sym_nfields, "nfields"); | |
6b80d352 DH |
939 | |
940 | ||
80662eda | 941 | static SCM |
13d807b7 | 942 | build_class_class_slots (void) |
80662eda | 943 | { |
b6cf4d02 AW |
944 | /* has to be kept in sync with SCM_VTABLE_BASE_LAYOUT and |
945 | SCM_CLASS_CLASS_LAYOUT */ | |
6b80d352 DH |
946 | return scm_list_n ( |
947 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
b6cf4d02 AW |
948 | scm_list_3 (sym_flags, k_class, scm_class_hidden), |
949 | scm_list_3 (sym_self, k_class, scm_class_self), | |
950 | scm_list_3 (sym_instance_finalizer, k_class, scm_class_hidden), | |
6b80d352 | 951 | scm_list_1 (sym_print), |
b6cf4d02 AW |
952 | scm_list_3 (sym_name, k_class, scm_class_protected_hidden), |
953 | scm_list_3 (sym_reserved_0, k_class, scm_class_hidden), | |
954 | scm_list_3 (sym_reserved_1, k_class, scm_class_hidden), | |
6b80d352 DH |
955 | scm_list_1 (sym_redefined), |
956 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
957 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
958 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
959 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
960 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
961 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
962 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
963 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
6b80d352 DH |
964 | scm_list_1 (sym_direct_supers), |
965 | scm_list_1 (sym_direct_slots), | |
966 | scm_list_1 (sym_direct_subclasses), | |
967 | scm_list_1 (sym_direct_methods), | |
968 | scm_list_1 (sym_cpl), | |
969 | scm_list_1 (sym_default_slot_definition_class), | |
970 | scm_list_1 (sym_slots), | |
971 | scm_list_1 (sym_getters_n_setters), | |
972 | scm_list_1 (sym_keyword_access), | |
973 | scm_list_1 (sym_nfields), | |
6b80d352 | 974 | SCM_UNDEFINED); |
80662eda MD |
975 | } |
976 | ||
977 | static void | |
978 | create_basic_classes (void) | |
979 | { | |
980 | /* SCM slots_of_class = build_class_class_slots (); */ | |
981 | ||
b6cf4d02 AW |
982 | /**** <class> ****/ |
983 | SCM cs = scm_from_locale_string (SCM_CLASS_CLASS_LAYOUT); | |
4a655e50 | 984 | SCM name = scm_from_latin1_symbol ("<class>"); |
6d46f1e4 | 985 | scm_class_class = scm_i_make_vtable_vtable (cs); |
80662eda MD |
986 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID |
987 | | SCM_CLASSF_METACLASS)); | |
988 | ||
b6cf4d02 | 989 | SCM_SET_SLOT (scm_class_class, scm_vtable_index_name, name); |
dcb410ec DH |
990 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ |
991 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
992 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 993 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
994 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
995 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
e11e83f3 | 996 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, scm_from_int (SCM_N_CLASS_SLOTS)); |
dcb410ec DH |
997 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, |
998 | compute_getters_n_setters (slots_of_class)); */ | |
999 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
1000 | |
1001 | prep_hashsets (scm_class_class); | |
1002 | ||
1003 | DEFVAR(name, scm_class_class); | |
1004 | ||
51f66c91 | 1005 | /**** <top> ****/ |
4a655e50 | 1006 | name = scm_from_latin1_symbol ("<top>"); |
f39448c5 AW |
1007 | scm_class_top = scm_basic_make_class (scm_class_class, name, |
1008 | SCM_EOL, SCM_EOL); | |
80662eda MD |
1009 | |
1010 | DEFVAR(name, scm_class_top); | |
6d77c894 | 1011 | |
51f66c91 | 1012 | /**** <object> ****/ |
4a655e50 | 1013 | name = scm_from_latin1_symbol ("<object>"); |
f39448c5 AW |
1014 | scm_class_object = scm_basic_make_class (scm_class_class, name, |
1015 | scm_list_1 (scm_class_top), SCM_EOL); | |
80662eda MD |
1016 | |
1017 | DEFVAR (name, scm_class_object); | |
1018 | ||
1019 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 1020 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 1021 | |
1afff620 KN |
1022 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
1023 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
1024 | } |
1025 | ||
1026 | /******************************************************************************/ | |
1027 | ||
398d8ee1 KN |
1028 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
1029 | (SCM obj), | |
6bcefd15 | 1030 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 1031 | #define FUNC_NAME s_scm_instance_p |
80662eda | 1032 | { |
7888309b | 1033 | return scm_from_bool (SCM_INSTANCEP (obj)); |
80662eda | 1034 | } |
398d8ee1 | 1035 | #undef FUNC_NAME |
80662eda | 1036 | |
80662eda MD |
1037 | |
1038 | /****************************************************************************** | |
6d77c894 | 1039 | * |
80662eda MD |
1040 | * Meta object accessors |
1041 | * | |
1042 | ******************************************************************************/ | |
398d8ee1 KN |
1043 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
1044 | (SCM obj), | |
6bcefd15 | 1045 | "Return the class name of @var{obj}.") |
398d8ee1 | 1046 | #define FUNC_NAME s_scm_class_name |
80662eda | 1047 | { |
398d8ee1 | 1048 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1049 | return scm_slot_ref (obj, sym_name); |
80662eda | 1050 | } |
398d8ee1 | 1051 | #undef FUNC_NAME |
80662eda | 1052 | |
398d8ee1 KN |
1053 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
1054 | (SCM obj), | |
6bcefd15 | 1055 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 1056 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 1057 | { |
398d8ee1 | 1058 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1059 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 1060 | } |
398d8ee1 | 1061 | #undef FUNC_NAME |
80662eda | 1062 | |
398d8ee1 KN |
1063 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
1064 | (SCM obj), | |
6bcefd15 | 1065 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 1066 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 1067 | { |
398d8ee1 | 1068 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1069 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 1070 | } |
398d8ee1 | 1071 | #undef FUNC_NAME |
80662eda | 1072 | |
398d8ee1 KN |
1073 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
1074 | (SCM obj), | |
6bcefd15 | 1075 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 1076 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 1077 | { |
398d8ee1 | 1078 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1079 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 1080 | } |
398d8ee1 | 1081 | #undef FUNC_NAME |
80662eda | 1082 | |
398d8ee1 KN |
1083 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
1084 | (SCM obj), | |
6bcefd15 | 1085 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 1086 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 1087 | { |
398d8ee1 | 1088 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1089 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 1090 | } |
398d8ee1 | 1091 | #undef FUNC_NAME |
80662eda | 1092 | |
398d8ee1 KN |
1093 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
1094 | (SCM obj), | |
6bcefd15 | 1095 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 1096 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 1097 | { |
398d8ee1 | 1098 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1099 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 1100 | } |
398d8ee1 | 1101 | #undef FUNC_NAME |
80662eda | 1102 | |
398d8ee1 KN |
1103 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
1104 | (SCM obj), | |
6bcefd15 | 1105 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 1106 | #define FUNC_NAME s_scm_class_slots |
80662eda | 1107 | { |
398d8ee1 | 1108 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1109 | return scm_slot_ref (obj, sym_slots); |
80662eda | 1110 | } |
398d8ee1 | 1111 | #undef FUNC_NAME |
80662eda | 1112 | |
398d8ee1 KN |
1113 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
1114 | (SCM obj), | |
6bcefd15 | 1115 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 1116 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 1117 | { |
398d8ee1 | 1118 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
1119 | return scm_procedure_property (obj, scm_sym_name); |
1120 | } | |
398d8ee1 | 1121 | #undef FUNC_NAME |
80662eda | 1122 | |
bbf8d523 MD |
1123 | SCM_SYMBOL (sym_methods, "methods"); |
1124 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
1125 | SCM_SYMBOL (sym_extends, "extends"); | |
1126 | ||
1127 | static | |
1128 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
1129 | { | |
1130 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
1131 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
d2e53ed6 | 1132 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1133 | { |
1134 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
1135 | gfs = SCM_CDR (gfs); | |
1136 | } | |
1137 | return method_lists; | |
1138 | } | |
1139 | ||
1140 | static | |
1141 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
1142 | { | |
1143 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
1144 | { | |
1145 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
d2e53ed6 | 1146 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1147 | { |
1148 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
1149 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
1150 | method_lists), | |
1151 | SCM_CAR (gfs)); | |
1152 | gfs = SCM_CDR (gfs); | |
1153 | } | |
1154 | } | |
1155 | return method_lists; | |
1156 | } | |
1157 | ||
398d8ee1 KN |
1158 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
1159 | (SCM obj), | |
6bcefd15 | 1160 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 1161 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 1162 | { |
bbf8d523 | 1163 | SCM methods; |
398d8ee1 | 1164 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
1165 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
1166 | methods = fold_downward_gf_methods (methods, obj); | |
1167 | return scm_append (methods); | |
80662eda | 1168 | } |
398d8ee1 | 1169 | #undef FUNC_NAME |
80662eda | 1170 | |
398d8ee1 KN |
1171 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
1172 | (SCM obj), | |
bb2c02f2 | 1173 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 1174 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 1175 | { |
398d8ee1 | 1176 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1177 | return scm_slot_ref (obj, scm_from_latin1_symbol ("generic-function")); |
80662eda | 1178 | } |
398d8ee1 | 1179 | #undef FUNC_NAME |
80662eda | 1180 | |
398d8ee1 KN |
1181 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
1182 | (SCM obj), | |
6bcefd15 | 1183 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 1184 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 1185 | { |
398d8ee1 | 1186 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1187 | return scm_slot_ref (obj, scm_from_latin1_symbol ("specializers")); |
80662eda | 1188 | } |
398d8ee1 | 1189 | #undef FUNC_NAME |
80662eda | 1190 | |
398d8ee1 KN |
1191 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
1192 | (SCM obj), | |
6bcefd15 | 1193 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 1194 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 1195 | { |
398d8ee1 | 1196 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 1197 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 1198 | } |
398d8ee1 | 1199 | #undef FUNC_NAME |
80662eda | 1200 | |
80662eda MD |
1201 | /****************************************************************************** |
1202 | * | |
1203 | * S l o t a c c e s s | |
1204 | * | |
1205 | ******************************************************************************/ | |
1206 | ||
398d8ee1 KN |
1207 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1208 | (), | |
6bcefd15 | 1209 | "Return the unbound value.") |
398d8ee1 | 1210 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1211 | { |
1212 | return SCM_GOOPS_UNBOUND; | |
1213 | } | |
398d8ee1 | 1214 | #undef FUNC_NAME |
80662eda | 1215 | |
398d8ee1 KN |
1216 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1217 | (SCM obj), | |
6bcefd15 | 1218 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1219 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1220 | { |
1221 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1222 | } | |
398d8ee1 | 1223 | #undef FUNC_NAME |
80662eda | 1224 | |
398d8ee1 KN |
1225 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1226 | (SCM value, SCM obj), | |
6bcefd15 MG |
1227 | "Return @var{value} if it is bound, and invoke the\n" |
1228 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1229 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1230 | { |
1231 | if (SCM_GOOPS_UNBOUNDP (value)) | |
bef95911 | 1232 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1233 | return value; |
1234 | } | |
398d8ee1 | 1235 | #undef FUNC_NAME |
80662eda | 1236 | |
398d8ee1 KN |
1237 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1238 | (SCM obj, SCM index), | |
6bcefd15 MG |
1239 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1240 | "the value from @var{obj}.") | |
398d8ee1 | 1241 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda | 1242 | { |
e11e83f3 | 1243 | SCM value = SCM_SLOT (obj, scm_to_int (index)); |
80662eda | 1244 | if (SCM_GOOPS_UNBOUNDP (value)) |
bef95911 | 1245 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1246 | return value; |
1247 | } | |
398d8ee1 | 1248 | #undef FUNC_NAME |
80662eda | 1249 | |
398d8ee1 KN |
1250 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1251 | (SCM obj, SCM index), | |
6bcefd15 | 1252 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1253 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1254 | { |
e25f3727 | 1255 | scm_t_bits i; |
80662eda | 1256 | |
398d8ee1 | 1257 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1258 | i = scm_to_unsigned_integer (index, 0, |
1259 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1260 | scm_si_nfields)) | |
1261 | - 1); | |
58241edc | 1262 | return SCM_SLOT (obj, i); |
80662eda | 1263 | } |
ca83b028 DH |
1264 | #undef FUNC_NAME |
1265 | ||
398d8ee1 KN |
1266 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1267 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1268 | "Set the slot with index @var{index} in @var{obj} to\n" |
1269 | "@var{value}.") | |
398d8ee1 | 1270 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1271 | { |
e25f3727 | 1272 | scm_t_bits i; |
80662eda | 1273 | |
398d8ee1 | 1274 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1275 | i = scm_to_unsigned_integer (index, 0, |
1276 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1277 | scm_si_nfields)) | |
1278 | - 1); | |
6b80d352 | 1279 | |
dcb410ec | 1280 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1281 | |
80662eda MD |
1282 | return SCM_UNSPECIFIED; |
1283 | } | |
ca83b028 DH |
1284 | #undef FUNC_NAME |
1285 | ||
80662eda | 1286 | |
4d0949ea | 1287 | \f |
80662eda MD |
1288 | /** Utilities **/ |
1289 | ||
1290 | /* In the future, this function will return the effective slot | |
1291 | * definition associated with SLOT_NAME. Now it just returns some of | |
1292 | * the information which will be stored in the effective slot | |
1293 | * definition. | |
1294 | */ | |
1295 | ||
1296 | static SCM | |
1297 | slot_definition_using_name (SCM class, SCM slot_name) | |
1298 | { | |
1299 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
d2e53ed6 | 1300 | for (; !scm_is_null (slots); slots = SCM_CDR (slots)) |
d223c3fc | 1301 | if (scm_is_eq (SCM_CAAR (slots), slot_name)) |
80662eda MD |
1302 | return SCM_CAR (slots); |
1303 | return SCM_BOOL_F; | |
1304 | } | |
1305 | ||
1306 | static SCM | |
e81d98ec | 1307 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
54ee7cdf | 1308 | #define FUNC_NAME "%get-slot-value" |
80662eda MD |
1309 | { |
1310 | SCM access = SCM_CDDR (slotdef); | |
1311 | /* Two cases here: | |
1312 | * - access is an integer (the offset of this slot in the slots vector) | |
1313 | * - otherwise (car access) is the getter function to apply | |
e11e83f3 MV |
1314 | * |
1315 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1316 | * we can just assume fixnums here. | |
23437298 | 1317 | */ |
e11e83f3 | 1318 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1319 | /* Don't poke at the slots directly, because scm_struct_ref handles the |
1320 | access bits for us. */ | |
1321 | return scm_struct_ref (obj, access); | |
80662eda | 1322 | else |
9d019f9b | 1323 | return scm_call_1 (SCM_CAR (access), obj); |
80662eda | 1324 | } |
54ee7cdf | 1325 | #undef FUNC_NAME |
80662eda MD |
1326 | |
1327 | static SCM | |
1328 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1329 | { | |
1330 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1331 | if (scm_is_true (slotdef)) |
80662eda MD |
1332 | return get_slot_value (class, obj, slotdef); |
1333 | else | |
bef95911 | 1334 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name); |
80662eda MD |
1335 | } |
1336 | ||
1337 | static SCM | |
e81d98ec | 1338 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
54ee7cdf | 1339 | #define FUNC_NAME "%set-slot-value" |
80662eda MD |
1340 | { |
1341 | SCM access = SCM_CDDR (slotdef); | |
1342 | /* Two cases here: | |
1343 | * - access is an integer (the offset of this slot in the slots vector) | |
1344 | * - otherwise (cadr access) is the setter function to apply | |
e11e83f3 MV |
1345 | * |
1346 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1347 | * we can just assume fixnums here. | |
80662eda | 1348 | */ |
e11e83f3 | 1349 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1350 | /* obey permissions bits via going through struct-set! */ |
1351 | scm_struct_set_x (obj, access, value); | |
80662eda | 1352 | else |
9d019f9b AW |
1353 | /* ((cadr l) obj value) */ |
1354 | scm_call_2 (SCM_CADR (access), obj, value); | |
80662eda MD |
1355 | return SCM_UNSPECIFIED; |
1356 | } | |
54ee7cdf | 1357 | #undef FUNC_NAME |
80662eda MD |
1358 | |
1359 | static SCM | |
1360 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1361 | { | |
1362 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1363 | if (scm_is_true (slotdef)) |
80662eda MD |
1364 | return set_slot_value (class, obj, slotdef, value); |
1365 | else | |
bef95911 | 1366 | return scm_call_4 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name, value); |
80662eda MD |
1367 | } |
1368 | ||
1369 | static SCM | |
e81d98ec | 1370 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1371 | { |
1372 | register SCM l; | |
1373 | ||
d2e53ed6 | 1374 | for (l = SCM_ACCESSORS_OF (obj); !scm_is_null (l); l = SCM_CDR (l)) |
bc36d050 | 1375 | if (scm_is_eq (SCM_CAAR (l), slot_name)) |
80662eda MD |
1376 | return SCM_BOOL_T; |
1377 | ||
1378 | return SCM_BOOL_F; | |
1379 | } | |
1380 | ||
80662eda MD |
1381 | /* ======================================== */ |
1382 | ||
23437298 DH |
1383 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1384 | (SCM class, SCM obj, SCM slot_name), | |
1385 | "") | |
1386 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1387 | { |
1388 | SCM res; | |
1389 | ||
398d8ee1 KN |
1390 | SCM_VALIDATE_CLASS (1, class); |
1391 | SCM_VALIDATE_INSTANCE (2, obj); | |
1392 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1393 | |
1394 | res = get_slot_value_using_name (class, obj, slot_name); | |
1395 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1396 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1397 | return res; |
1398 | } | |
23437298 | 1399 | #undef FUNC_NAME |
80662eda | 1400 | |
23437298 DH |
1401 | |
1402 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1403 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1404 | "") | |
1405 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1406 | { |
398d8ee1 KN |
1407 | SCM_VALIDATE_CLASS (1, class); |
1408 | SCM_VALIDATE_INSTANCE (2, obj); | |
1409 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1410 | |
80662eda MD |
1411 | return set_slot_value_using_name (class, obj, slot_name, value); |
1412 | } | |
23437298 DH |
1413 | #undef FUNC_NAME |
1414 | ||
80662eda | 1415 | |
398d8ee1 KN |
1416 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1417 | (SCM class, SCM obj, SCM slot_name), | |
1418 | "") | |
1419 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1420 | { |
398d8ee1 KN |
1421 | SCM_VALIDATE_CLASS (1, class); |
1422 | SCM_VALIDATE_INSTANCE (2, obj); | |
1423 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1424 | |
1425 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1426 | ? SCM_BOOL_F | |
1427 | : SCM_BOOL_T); | |
1428 | } | |
398d8ee1 | 1429 | #undef FUNC_NAME |
80662eda | 1430 | |
398d8ee1 KN |
1431 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1432 | (SCM class, SCM obj, SCM slot_name), | |
1433 | "") | |
1434 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1435 | { | |
1436 | SCM_VALIDATE_CLASS (1, class); | |
1437 | SCM_VALIDATE_INSTANCE (2, obj); | |
1438 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1439 | return test_slot_existence (class, obj, slot_name); |
1440 | } | |
398d8ee1 | 1441 | #undef FUNC_NAME |
80662eda MD |
1442 | |
1443 | ||
1444 | /* ======================================== */ | |
1445 | ||
398d8ee1 KN |
1446 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1447 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1448 | "Return the value from @var{obj}'s slot with the name\n" |
1449 | "@var{slot_name}.") | |
398d8ee1 | 1450 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1451 | { |
1452 | SCM res, class; | |
1453 | ||
398d8ee1 | 1454 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1455 | TEST_CHANGE_CLASS (obj, class); |
1456 | ||
1457 | res = get_slot_value_using_name (class, obj, slot_name); | |
1458 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1459 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1460 | return res; |
1461 | } | |
398d8ee1 | 1462 | #undef FUNC_NAME |
80662eda | 1463 | |
398d8ee1 KN |
1464 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1465 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1466 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1467 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1468 | { |
1469 | SCM class; | |
1470 | ||
398d8ee1 | 1471 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1472 | TEST_CHANGE_CLASS(obj, class); |
1473 | ||
1474 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1475 | } | |
398d8ee1 | 1476 | #undef FUNC_NAME |
80662eda | 1477 | |
398d8ee1 | 1478 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1479 | |
398d8ee1 KN |
1480 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1481 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1482 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1483 | "is bound.") | |
398d8ee1 | 1484 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1485 | { |
1486 | SCM class; | |
1487 | ||
398d8ee1 | 1488 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1489 | TEST_CHANGE_CLASS(obj, class); |
1490 | ||
1491 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1492 | obj, | |
1493 | slot_name)) | |
1494 | ? SCM_BOOL_F | |
1495 | : SCM_BOOL_T); | |
1496 | } | |
398d8ee1 | 1497 | #undef FUNC_NAME |
80662eda | 1498 | |
6d77c894 | 1499 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1500 | (SCM obj, SCM slot_name), |
6bcefd15 | 1501 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1502 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1503 | { |
1504 | SCM class; | |
1505 | ||
398d8ee1 KN |
1506 | SCM_VALIDATE_INSTANCE (1, obj); |
1507 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1508 | TEST_CHANGE_CLASS (obj, class); |
1509 | ||
1510 | return test_slot_existence (class, obj, slot_name); | |
1511 | } | |
398d8ee1 | 1512 | #undef FUNC_NAME |
80662eda MD |
1513 | |
1514 | ||
1515 | /****************************************************************************** | |
1516 | * | |
1517 | * %allocate-instance (the low level instance allocation primitive) | |
1518 | * | |
1519 | ******************************************************************************/ | |
1520 | ||
1521 | static void clear_method_cache (SCM); | |
1522 | ||
398d8ee1 KN |
1523 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1524 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1525 | "Create a new instance of class @var{class} and initialize it\n" |
1526 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1527 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda | 1528 | { |
b6cf4d02 | 1529 | SCM obj; |
e25f3727 | 1530 | scm_t_signed_bits n, i; |
b6cf4d02 | 1531 | SCM layout; |
80662eda | 1532 | |
398d8ee1 | 1533 | SCM_VALIDATE_CLASS (1, class); |
80662eda | 1534 | |
b6cf4d02 | 1535 | /* FIXME: duplicates some of scm_make_struct. */ |
80662eda | 1536 | |
e11e83f3 | 1537 | n = SCM_I_INUM (SCM_SLOT (class, scm_si_nfields)); |
96a44c1c | 1538 | obj = scm_i_alloc_struct (SCM_STRUCT_DATA (class), n); |
6d77c894 | 1539 | |
b6cf4d02 AW |
1540 | layout = SCM_VTABLE_LAYOUT (class); |
1541 | ||
1542 | /* Set all SCM-holding slots to unbound */ | |
1543 | for (i = 0; i < n; i++) | |
71fc6438 AW |
1544 | { |
1545 | scm_t_wchar c = scm_i_symbol_ref (layout, i*2); | |
b6cf4d02 AW |
1546 | if (c == 'p') |
1547 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (SCM_GOOPS_UNBOUND); | |
1548 | else if (c == 's') | |
1549 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (obj); | |
1550 | else | |
1551 | SCM_STRUCT_DATA (obj)[i] = 0; | |
80662eda | 1552 | } |
6d77c894 | 1553 | |
b6cf4d02 AW |
1554 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) |
1555 | clear_method_cache (obj); | |
80662eda | 1556 | |
b6cf4d02 | 1557 | return obj; |
80662eda | 1558 | } |
398d8ee1 | 1559 | #undef FUNC_NAME |
80662eda | 1560 | |
398d8ee1 KN |
1561 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1562 | (SCM obj, SCM setter), | |
1563 | "") | |
1564 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1565 | { |
11561496 AW |
1566 | SCM_ASSERT (SCM_STRUCTP (obj) |
1567 | && (SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC), | |
80662eda MD |
1568 | obj, |
1569 | SCM_ARG1, | |
398d8ee1 | 1570 | FUNC_NAME); |
11561496 | 1571 | SCM_SET_GENERIC_SETTER (obj, setter); |
80662eda MD |
1572 | return SCM_UNSPECIFIED; |
1573 | } | |
398d8ee1 | 1574 | #undef FUNC_NAME |
80662eda MD |
1575 | |
1576 | /****************************************************************************** | |
1577 | * | |
1578 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1579 | * |
80662eda MD |
1580 | ******************************************************************************/ |
1581 | ||
398d8ee1 KN |
1582 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1583 | (SCM old, SCM new), | |
1584 | "") | |
1585 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1586 | { |
398d8ee1 KN |
1587 | SCM_VALIDATE_INSTANCE (1, old); |
1588 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1589 | |
6d77c894 | 1590 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1591 | * scratch the old value with new to be correct with GC. |
1592 | * See "Class redefinition protocol above". | |
1593 | */ | |
9de87eea | 1594 | SCM_CRITICAL_SECTION_START; |
80662eda | 1595 | { |
32b12f40 KR |
1596 | scm_t_bits word0, word1; |
1597 | word0 = SCM_CELL_WORD_0 (old); | |
1598 | word1 = SCM_CELL_WORD_1 (old); | |
1599 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1600 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
1601 | SCM_SET_CELL_WORD_0 (new, word0); | |
1602 | SCM_SET_CELL_WORD_1 (new, word1); | |
80662eda | 1603 | } |
9de87eea | 1604 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1605 | return SCM_UNSPECIFIED; |
1606 | } | |
398d8ee1 | 1607 | #undef FUNC_NAME |
80662eda | 1608 | |
398d8ee1 KN |
1609 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1610 | (SCM old, SCM new), | |
1611 | "") | |
1612 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1613 | { |
398d8ee1 KN |
1614 | SCM_VALIDATE_CLASS (1, old); |
1615 | SCM_VALIDATE_CLASS (2, new); | |
80662eda | 1616 | |
9de87eea | 1617 | SCM_CRITICAL_SECTION_START; |
80662eda | 1618 | { |
32b12f40 KR |
1619 | scm_t_bits word0, word1; |
1620 | word0 = SCM_CELL_WORD_0 (old); | |
1621 | word1 = SCM_CELL_WORD_1 (old); | |
1622 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1623 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
b6cf4d02 | 1624 | SCM_STRUCT_DATA (old)[scm_vtable_index_self] = SCM_UNPACK (old); |
32b12f40 KR |
1625 | SCM_SET_CELL_WORD_0 (new, word0); |
1626 | SCM_SET_CELL_WORD_1 (new, word1); | |
b6cf4d02 | 1627 | SCM_STRUCT_DATA (new)[scm_vtable_index_self] = SCM_UNPACK (new); |
80662eda | 1628 | } |
9de87eea | 1629 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1630 | return SCM_UNSPECIFIED; |
1631 | } | |
398d8ee1 | 1632 | #undef FUNC_NAME |
80662eda | 1633 | |
398d8ee1 KN |
1634 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1635 | (SCM class), | |
1636 | "") | |
1637 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1638 | { |
398d8ee1 | 1639 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1640 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1641 | return SCM_UNSPECIFIED; | |
1642 | } | |
398d8ee1 | 1643 | #undef FUNC_NAME |
80662eda MD |
1644 | |
1645 | /* When instances change class, they finally get a new body, but | |
1646 | * before that, they go through purgatory in hell. Odd as it may | |
1647 | * seem, this data structure saves us from eternal suffering in | |
1648 | * infinite recursions. | |
1649 | */ | |
1650 | ||
92c2555f | 1651 | static scm_t_bits **hell; |
c014a02e ML |
1652 | static long n_hell = 1; /* one place for the evil one himself */ |
1653 | static long hell_size = 4; | |
2132f0d2 | 1654 | static SCM hell_mutex; |
80662eda | 1655 | |
c014a02e | 1656 | static long |
80662eda MD |
1657 | burnin (SCM o) |
1658 | { | |
c014a02e | 1659 | long i; |
80662eda | 1660 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1661 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1662 | return i; |
1663 | return 0; | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | go_to_hell (void *o) | |
1668 | { | |
b5df9cda | 1669 | SCM obj = *(SCM*)o; |
2132f0d2 | 1670 | scm_lock_mutex (hell_mutex); |
51ef99f7 | 1671 | if (n_hell >= hell_size) |
80662eda | 1672 | { |
51ef99f7 | 1673 | hell_size *= 2; |
408bcd99 | 1674 | hell = scm_realloc (hell, hell_size * sizeof(*hell)); |
80662eda | 1675 | } |
6b80d352 | 1676 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1677 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1678 | } |
1679 | ||
1680 | static void | |
1681 | go_to_heaven (void *o) | |
1682 | { | |
b5df9cda | 1683 | SCM obj = *(SCM*)o; |
2132f0d2 | 1684 | scm_lock_mutex (hell_mutex); |
b5df9cda | 1685 | hell[burnin (obj)] = hell[--n_hell]; |
2132f0d2 | 1686 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1687 | } |
1688 | ||
6b80d352 DH |
1689 | |
1690 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1691 | ||
80662eda | 1692 | static SCM |
b5df9cda | 1693 | purgatory (SCM obj, SCM new_class) |
80662eda | 1694 | { |
b5df9cda | 1695 | return scm_call_2 (SCM_VARIABLE_REF (var_change_class), obj, new_class); |
80662eda MD |
1696 | } |
1697 | ||
38d8927c MD |
1698 | /* This function calls the generic function change-class for all |
1699 | * instances which aren't currently undergoing class change. | |
1700 | */ | |
1701 | ||
80662eda | 1702 | void |
e81d98ec | 1703 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1704 | { |
1705 | if (!burnin (obj)) | |
b5df9cda AW |
1706 | { |
1707 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
1708 | scm_dynwind_rewind_handler (go_to_hell, &obj, SCM_F_WIND_EXPLICITLY); | |
1709 | scm_dynwind_unwind_handler (go_to_heaven, &obj, SCM_F_WIND_EXPLICITLY); | |
1710 | purgatory (obj, new_class); | |
1711 | scm_dynwind_end (); | |
1712 | } | |
80662eda MD |
1713 | } |
1714 | ||
1715 | /****************************************************************************** | |
1716 | * | |
6d77c894 TTN |
1717 | * GGGG FFFFF |
1718 | * G F | |
1719 | * G GG FFF | |
1720 | * G G F | |
80662eda MD |
1721 | * GGG E N E R I C F U N C T I O N S |
1722 | * | |
1723 | * This implementation provides | |
1724 | * - generic functions (with class specializers) | |
1725 | * - multi-methods | |
6d77c894 | 1726 | * - next-method |
80662eda MD |
1727 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1728 | * | |
1729 | ******************************************************************************/ | |
1730 | ||
1731 | SCM_KEYWORD (k_name, "name"); | |
1732 | ||
63c1872f | 1733 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 1734 | |
a4aa2134 | 1735 | |
efcebb5b AW |
1736 | SCM |
1737 | scm_apply_generic (SCM gf, SCM args) | |
1738 | { | |
2f652c68 | 1739 | return scm_apply (SCM_STRUCT_PROCEDURE (gf), args, SCM_EOL); |
efcebb5b AW |
1740 | } |
1741 | ||
1742 | SCM | |
1743 | scm_call_generic_0 (SCM gf) | |
1744 | { | |
2f652c68 | 1745 | return scm_call_0 (SCM_STRUCT_PROCEDURE (gf)); |
efcebb5b AW |
1746 | } |
1747 | ||
1748 | SCM | |
1749 | scm_call_generic_1 (SCM gf, SCM a1) | |
1750 | { | |
2f652c68 | 1751 | return scm_call_1 (SCM_STRUCT_PROCEDURE (gf), a1); |
efcebb5b AW |
1752 | } |
1753 | ||
1754 | SCM | |
1755 | scm_call_generic_2 (SCM gf, SCM a1, SCM a2) | |
1756 | { | |
2f652c68 | 1757 | return scm_call_2 (SCM_STRUCT_PROCEDURE (gf), a1, a2); |
efcebb5b AW |
1758 | } |
1759 | ||
1760 | SCM | |
1761 | scm_call_generic_3 (SCM gf, SCM a1, SCM a2, SCM a3) | |
1762 | { | |
2f652c68 | 1763 | return scm_call_3 (SCM_STRUCT_PROCEDURE (gf), a1, a2, a3); |
efcebb5b AW |
1764 | } |
1765 | ||
e29db33c AW |
1766 | SCM_SYMBOL (sym_delayed_compile, "delayed-compile"); |
1767 | static SCM | |
1768 | make_dispatch_procedure (SCM gf) | |
1769 | { | |
1770 | static SCM var = SCM_BOOL_F; | |
393baa8a | 1771 | if (scm_is_false (var)) |
e29db33c AW |
1772 | var = scm_module_variable (scm_c_resolve_module ("oop goops dispatch"), |
1773 | sym_delayed_compile); | |
1774 | return scm_call_1 (SCM_VARIABLE_REF (var), gf); | |
1775 | } | |
1776 | ||
80662eda MD |
1777 | static void |
1778 | clear_method_cache (SCM gf) | |
1779 | { | |
e29db33c | 1780 | SCM_SET_GENERIC_DISPATCH_PROCEDURE (gf, make_dispatch_procedure (gf)); |
a9a90a88 | 1781 | SCM_CLEAR_GENERIC_EFFECTIVE_METHODS (gf); |
80662eda MD |
1782 | } |
1783 | ||
398d8ee1 KN |
1784 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1785 | (SCM gf), | |
1786 | "") | |
1787 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda | 1788 | { |
25ba37df | 1789 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
6d33e90f | 1790 | clear_method_cache (gf); |
80662eda MD |
1791 | return SCM_UNSPECIFIED; |
1792 | } | |
398d8ee1 | 1793 | #undef FUNC_NAME |
80662eda | 1794 | |
398d8ee1 KN |
1795 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1796 | (SCM proc), | |
1797 | "") | |
1798 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1799 | { |
7888309b | 1800 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
398d8ee1 | 1801 | proc, SCM_ARG1, FUNC_NAME); |
9fdf9fd3 | 1802 | return (SCM_PRIMITIVE_GENERIC_P (proc) ? SCM_BOOL_T : SCM_BOOL_F); |
80662eda | 1803 | } |
398d8ee1 | 1804 | #undef FUNC_NAME |
80662eda | 1805 | |
398d8ee1 KN |
1806 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1807 | (SCM subrs), | |
1808 | "") | |
1809 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1810 | { |
6b80d352 | 1811 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
d2e53ed6 | 1812 | while (!scm_is_null (subrs)) |
80662eda MD |
1813 | { |
1814 | SCM subr = SCM_CAR (subrs); | |
9fdf9fd3 | 1815 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARGn, FUNC_NAME); |
52fd9639 AW |
1816 | SCM_SET_SUBR_GENERIC (subr, |
1817 | scm_make (scm_list_3 (scm_class_generic, | |
1818 | k_name, | |
1819 | SCM_SUBR_NAME (subr)))); | |
80662eda MD |
1820 | subrs = SCM_CDR (subrs); |
1821 | } | |
1822 | return SCM_UNSPECIFIED; | |
1823 | } | |
398d8ee1 | 1824 | #undef FUNC_NAME |
80662eda | 1825 | |
9f63ce02 AW |
1826 | SCM_DEFINE (scm_set_primitive_generic_x, "set-primitive-generic!", 2, 0, 0, |
1827 | (SCM subr, SCM generic), | |
1828 | "") | |
1829 | #define FUNC_NAME s_scm_set_primitive_generic_x | |
1830 | { | |
9fdf9fd3 | 1831 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARG1, FUNC_NAME); |
9f63ce02 | 1832 | SCM_ASSERT (SCM_PUREGENERICP (generic), generic, SCM_ARG2, FUNC_NAME); |
52fd9639 | 1833 | SCM_SET_SUBR_GENERIC (subr, generic); |
9f63ce02 AW |
1834 | return SCM_UNSPECIFIED; |
1835 | } | |
1836 | #undef FUNC_NAME | |
1837 | ||
398d8ee1 KN |
1838 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1839 | (SCM subr), | |
1840 | "") | |
1841 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda | 1842 | { |
9fdf9fd3 | 1843 | if (SCM_PRIMITIVE_GENERIC_P (subr)) |
80662eda | 1844 | { |
b2b33168 | 1845 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr))) |
a48d60b1 MD |
1846 | scm_enable_primitive_generic_x (scm_list_1 (subr)); |
1847 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1848 | } |
db4b4ca6 | 1849 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1850 | } |
398d8ee1 | 1851 | #undef FUNC_NAME |
80662eda | 1852 | |
a48d60b1 MD |
1853 | typedef struct t_extension { |
1854 | struct t_extension *next; | |
1855 | SCM extended; | |
1856 | SCM extension; | |
1857 | } t_extension; | |
1858 | ||
d0cad249 LC |
1859 | |
1860 | /* Hint for `scm_gc_malloc ()' et al. when allocating `t_extension' | |
1861 | objects. */ | |
1862 | static const char extension_gc_hint[] = "GOOPS extension"; | |
1863 | ||
a48d60b1 MD |
1864 | static t_extension *extensions = 0; |
1865 | ||
a48d60b1 MD |
1866 | void |
1867 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1868 | { | |
1869 | if (goops_loaded_p) | |
1870 | { | |
1871 | SCM gf, gext; | |
b2b33168 | 1872 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (extended))) |
a48d60b1 MD |
1873 | scm_enable_primitive_generic_x (scm_list_1 (extended)); |
1874 | gf = *SCM_SUBR_GENERIC (extended); | |
1875 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1876 | gf, | |
ce471ab8 | 1877 | SCM_SUBR_NAME (extension)); |
feccd2d3 | 1878 | SCM_SET_SUBR_GENERIC (extension, gext); |
a48d60b1 MD |
1879 | } |
1880 | else | |
1881 | { | |
d0cad249 LC |
1882 | t_extension *e = scm_gc_malloc (sizeof (t_extension), |
1883 | extension_gc_hint); | |
a48d60b1 MD |
1884 | t_extension **loc = &extensions; |
1885 | /* Make sure that extensions are placed before their own | |
1886 | * extensions in the extensions list. O(N^2) algorithm, but | |
1887 | * extensions of primitive generics are rare. | |
1888 | */ | |
d223c3fc | 1889 | while (*loc && !scm_is_eq (extension, (*loc)->extended)) |
a48d60b1 MD |
1890 | loc = &(*loc)->next; |
1891 | e->next = *loc; | |
1892 | e->extended = extended; | |
1893 | e->extension = extension; | |
1894 | *loc = e; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | static void | |
1899 | setup_extended_primitive_generics () | |
1900 | { | |
1901 | while (extensions) | |
1902 | { | |
1903 | t_extension *e = extensions; | |
1904 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1905 | extensions = e->next; | |
a48d60b1 MD |
1906 | } |
1907 | } | |
1908 | ||
80662eda | 1909 | /****************************************************************************** |
6d77c894 | 1910 | * |
80662eda | 1911 | * Protocol for calling a generic fumction |
6d77c894 | 1912 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1913 | * for efficiency reasons): |
1914 | * | |
1915 | * + apply-generic (gf args) | |
1916 | * + compute-applicable-methods (gf args ...) | |
1917 | * + sort-applicable-methods (methods args) | |
1918 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1919 | * |
1920 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1921 | * method. Applying a next-method will call apply-next-method which in |
1922 | * turn will call apply again to call effectively the following method. | |
1923 | * | |
1924 | ******************************************************************************/ | |
1925 | ||
1926 | static int | |
1927 | applicablep (SCM actual, SCM formal) | |
1928 | { | |
79a3dafe | 1929 | /* We already know that the cpl is well formed. */ |
7888309b | 1930 | return scm_is_true (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); |
80662eda MD |
1931 | } |
1932 | ||
1933 | static int | |
34d19ef6 | 1934 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1935 | { |
1936 | register SCM s1, s2; | |
c014a02e | 1937 | register long i; |
6d77c894 TTN |
1938 | /* |
1939 | * Note: | |
1940 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1941 | * other when we have a dotted parameter list). For instance, with the call |
1942 | * (M 1) | |
1943 | * with | |
1944 | * (define-method M (a . l) ....) | |
6d77c894 | 1945 | * (define-method M (a) ....) |
80662eda MD |
1946 | * |
1947 | * we consider that the second method is more specific. | |
1948 | * | |
1949 | * BTW, targs is an array of types. We don't need it's size since | |
1950 | * we already know that m1 and m2 are applicable (no risk to go past | |
1951 | * the end of this array). | |
1952 | * | |
1953 | */ | |
34d19ef6 | 1954 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
d2e53ed6 MV |
1955 | if (scm_is_null(s1)) return 1; |
1956 | if (scm_is_null(s2)) return 0; | |
d223c3fc | 1957 | if (!scm_is_eq (SCM_CAR(s1), SCM_CAR(s2))) { |
80662eda | 1958 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); |
6d77c894 | 1959 | |
dcb410ec | 1960 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
d223c3fc | 1961 | if (scm_is_eq (cs1, SCM_CAR (l))) |
80662eda | 1962 | return 1; |
d223c3fc | 1963 | if (scm_is_eq (cs2, SCM_CAR (l))) |
80662eda MD |
1964 | return 0; |
1965 | } | |
1966 | return 0;/* should not occur! */ | |
1967 | } | |
1968 | } | |
1969 | return 0; /* should not occur! */ | |
1970 | } | |
1971 | ||
1972 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1973 | ||
1974 | static SCM | |
c014a02e | 1975 | scm_i_vector2list (SCM l, long len) |
80662eda | 1976 | { |
c014a02e | 1977 | long j; |
00ffa0e7 | 1978 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1979 | |
80662eda | 1980 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
4057a3e0 | 1981 | SCM_SIMPLE_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1982 | } |
1983 | return z; | |
1984 | } | |
1985 | ||
1986 | static SCM | |
34d19ef6 | 1987 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1988 | { |
c014a02e | 1989 | long i, j, incr; |
80662eda MD |
1990 | SCM *v, vector = SCM_EOL; |
1991 | SCM buffer[BUFFSIZE]; | |
1992 | SCM save = method_list; | |
4057a3e0 | 1993 | scm_t_array_handle handle; |
80662eda MD |
1994 | |
1995 | /* For reasonably sized method_lists we can try to avoid all the | |
1996 | * consing and reorder the list in place... | |
1997 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1998 | */ | |
1999 | if (size <= BUFFSIZE) | |
2000 | { | |
2001 | for (i = 0; i < size; i++) | |
2002 | { | |
2003 | buffer[i] = SCM_CAR (method_list); | |
2004 | method_list = SCM_CDR (method_list); | |
2005 | } | |
2006 | v = buffer; | |
6d77c894 | 2007 | } |
80662eda MD |
2008 | else |
2009 | { | |
2010 | /* Too many elements in method_list to keep everything locally */ | |
2011 | vector = scm_i_vector2list (save, size); | |
4057a3e0 | 2012 | v = scm_vector_writable_elements (vector, &handle, NULL, NULL); |
80662eda MD |
2013 | } |
2014 | ||
6d77c894 | 2015 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
2016 | * small vectors (which is probably mostly the case when we have to |
2017 | * sort a list of applicable methods). | |
2018 | */ | |
2019 | for (incr = size / 2; incr; incr /= 2) | |
2020 | { | |
2021 | for (i = incr; i < size; i++) | |
2022 | { | |
2023 | for (j = i - incr; j >= 0; j -= incr) | |
2024 | { | |
2025 | if (more_specificp (v[j], v[j+incr], targs)) | |
2026 | break; | |
2027 | else | |
2028 | { | |
2029 | SCM tmp = v[j + incr]; | |
2030 | v[j + incr] = v[j]; | |
2031 | v[j] = tmp; | |
2032 | } | |
2033 | } | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | if (size <= BUFFSIZE) | |
2038 | { | |
2039 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
2040 | for (i = 0, method_list = save; i < size; i++, v++) | |
2041 | { | |
2042 | SCM_SETCAR (method_list, *v); | |
2043 | method_list = SCM_CDR (method_list); | |
2044 | } | |
2045 | return save; | |
2046 | } | |
4057a3e0 | 2047 | |
6d77c894 | 2048 | /* If we are here, that's that we did it the hard way... */ |
c8857a4d | 2049 | scm_array_handle_release (&handle); |
80662eda MD |
2050 | return scm_vector_to_list (vector); |
2051 | } | |
2052 | ||
2053 | SCM | |
c014a02e | 2054 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 2055 | { |
c014a02e ML |
2056 | register long i; |
2057 | long count = 0; | |
80662eda MD |
2058 | SCM l, fl, applicable = SCM_EOL; |
2059 | SCM save = args; | |
34d19ef6 HWN |
2060 | SCM buffer[BUFFSIZE]; |
2061 | SCM const *types; | |
2062 | SCM *p; | |
2063 | SCM tmp = SCM_EOL; | |
4057a3e0 | 2064 | scm_t_array_handle handle; |
6d77c894 | 2065 | |
80662eda | 2066 | /* Build the list of arguments types */ |
4057a3e0 MV |
2067 | if (len >= BUFFSIZE) |
2068 | { | |
2069 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); | |
2070 | types = p = scm_vector_writable_elements (tmp, &handle, NULL, NULL); | |
34d19ef6 HWN |
2071 | |
2072 | /* | |
2073 | note that we don't have to work to reset the generation | |
2074 | count. TMP is a new vector anyway, and it is found | |
2075 | conservatively. | |
2076 | */ | |
4057a3e0 | 2077 | } |
80662eda MD |
2078 | else |
2079 | types = p = buffer; | |
6d77c894 | 2080 | |
d2e53ed6 | 2081 | for ( ; !scm_is_null (args); args = SCM_CDR (args)) |
80662eda | 2082 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 2083 | |
80662eda | 2084 | /* Build a list of all applicable methods */ |
d2e53ed6 | 2085 | for (l = scm_generic_function_methods (gf); !scm_is_null (l); l = SCM_CDR (l)) |
80662eda MD |
2086 | { |
2087 | fl = SPEC_OF (SCM_CAR (l)); | |
80662eda MD |
2088 | for (i = 0; ; i++, fl = SCM_CDR (fl)) |
2089 | { | |
c312aca7 | 2090 | if (SCM_INSTANCEP (fl) |
80662eda | 2091 | /* We have a dotted argument list */ |
d2e53ed6 | 2092 | || (i >= len && scm_is_null (fl))) |
80662eda MD |
2093 | { /* both list exhausted */ |
2094 | applicable = scm_cons (SCM_CAR (l), applicable); | |
2095 | count += 1; | |
2096 | break; | |
2097 | } | |
2098 | if (i >= len | |
d2e53ed6 | 2099 | || scm_is_null (fl) |
80662eda MD |
2100 | || !applicablep (types[i], SCM_CAR (fl))) |
2101 | break; | |
2102 | } | |
2103 | } | |
2104 | ||
c8857a4d MV |
2105 | if (len >= BUFFSIZE) |
2106 | scm_array_handle_release (&handle); | |
2107 | ||
80662eda MD |
2108 | if (count == 0) |
2109 | { | |
2110 | if (find_method_p) | |
2111 | return SCM_BOOL_F; | |
bef95911 | 2112 | scm_call_2 (SCM_VARIABLE_REF (var_no_applicable_method), gf, save); |
80662eda MD |
2113 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ |
2114 | return SCM_BOOL_F; | |
2115 | } | |
34d19ef6 | 2116 | |
80662eda MD |
2117 | return (count == 1 |
2118 | ? applicable | |
2119 | : sort_applicable_methods (applicable, count, types)); | |
2120 | } | |
2121 | ||
2122 | #if 0 | |
2123 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
2124 | #endif | |
2125 | ||
2126 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
2127 | ||
2128 | SCM | |
2129 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 2130 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 2131 | { |
c014a02e | 2132 | long n; |
398d8ee1 | 2133 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2134 | n = scm_ilength (args); |
398d8ee1 | 2135 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
2136 | return scm_compute_applicable_methods (gf, args, n, 1); |
2137 | } | |
398d8ee1 | 2138 | #undef FUNC_NAME |
80662eda | 2139 | |
86d31dfe | 2140 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
cc7005bc AW |
2141 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", |
2142 | scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, | |
2143 | scm_sys_compute_applicable_methods)); | |
80662eda | 2144 | |
80662eda MD |
2145 | /****************************************************************************** |
2146 | * | |
2147 | * A simple make (which will be redefined later in Scheme) | |
2148 | * This version handles only creation of gf, methods and classes (no instances) | |
2149 | * | |
6d77c894 | 2150 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2151 | * no precaution is taken to be efficient. |
2152 | * | |
2153 | ******************************************************************************/ | |
2154 | ||
2155 | SCM_KEYWORD (k_setter, "setter"); | |
2156 | SCM_KEYWORD (k_specializers, "specializers"); | |
2157 | SCM_KEYWORD (k_procedure, "procedure"); | |
5487977b AW |
2158 | SCM_KEYWORD (k_formals, "formals"); |
2159 | SCM_KEYWORD (k_body, "body"); | |
e177058b | 2160 | SCM_KEYWORD (k_make_procedure, "make-procedure"); |
80662eda MD |
2161 | SCM_KEYWORD (k_dsupers, "dsupers"); |
2162 | SCM_KEYWORD (k_slots, "slots"); | |
2163 | SCM_KEYWORD (k_gf, "generic-function"); | |
2164 | ||
398d8ee1 KN |
2165 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2166 | (SCM args), | |
27c37006 | 2167 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2168 | "all necessary initialization information.") |
398d8ee1 | 2169 | #define FUNC_NAME s_scm_make |
80662eda MD |
2170 | { |
2171 | SCM class, z; | |
c014a02e | 2172 | long len = scm_ilength (args); |
80662eda MD |
2173 | |
2174 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2175 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2176 | |
2177 | class = SCM_CAR(args); | |
2178 | args = SCM_CDR(args); | |
2179 | ||
d223c3fc AW |
2180 | if (scm_is_eq (class, scm_class_generic) |
2181 | || scm_is_eq (class, scm_class_accessor)) | |
80662eda | 2182 | { |
80662eda | 2183 | z = scm_make_struct (class, SCM_INUM0, |
72d2e7e6 | 2184 | scm_list_4 (SCM_BOOL_F, |
51f66c91 | 2185 | SCM_EOL, |
1afff620 | 2186 | SCM_INUM0, |
bbf8d523 | 2187 | SCM_EOL)); |
80662eda MD |
2188 | scm_set_procedure_property_x (z, scm_sym_name, |
2189 | scm_get_keyword (k_name, | |
2190 | args, | |
2191 | SCM_BOOL_F)); | |
2192 | clear_method_cache (z); | |
d223c3fc | 2193 | if (scm_is_eq (class, scm_class_accessor)) |
80662eda MD |
2194 | { |
2195 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
7888309b | 2196 | if (scm_is_true (setter)) |
80662eda MD |
2197 | scm_sys_set_object_setter_x (z, setter); |
2198 | } | |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | z = scm_sys_allocate_instance (class, args); | |
2203 | ||
d223c3fc AW |
2204 | if (scm_is_eq (class, scm_class_method) |
2205 | || scm_is_eq (class, scm_class_accessor_method)) | |
80662eda | 2206 | { |
6d77c894 | 2207 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2208 | scm_i_get_keyword (k_gf, |
2209 | args, | |
2210 | len - 1, | |
2211 | SCM_BOOL_F, | |
dcb410ec | 2212 | FUNC_NAME)); |
6d77c894 | 2213 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2214 | scm_i_get_keyword (k_specializers, |
2215 | args, | |
2216 | len - 1, | |
2217 | SCM_EOL, | |
dcb410ec | 2218 | FUNC_NAME)); |
6d77c894 | 2219 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2220 | scm_i_get_keyword (k_procedure, |
2221 | args, | |
2222 | len - 1, | |
e177058b | 2223 | SCM_BOOL_F, |
dcb410ec | 2224 | FUNC_NAME)); |
5487977b AW |
2225 | SCM_SET_SLOT (z, scm_si_formals, |
2226 | scm_i_get_keyword (k_formals, | |
2227 | args, | |
2228 | len - 1, | |
2229 | SCM_EOL, | |
2230 | FUNC_NAME)); | |
2231 | SCM_SET_SLOT (z, scm_si_body, | |
2232 | scm_i_get_keyword (k_body, | |
2233 | args, | |
2234 | len - 1, | |
2235 | SCM_EOL, | |
2236 | FUNC_NAME)); | |
e177058b AW |
2237 | SCM_SET_SLOT (z, scm_si_make_procedure, |
2238 | scm_i_get_keyword (k_make_procedure, | |
5487977b AW |
2239 | args, |
2240 | len - 1, | |
2241 | SCM_BOOL_F, | |
2242 | FUNC_NAME)); | |
80662eda MD |
2243 | } |
2244 | else | |
2245 | { | |
2246 | /* In all the others case, make a new class .... No instance here */ | |
b6cf4d02 | 2247 | SCM_SET_SLOT (z, scm_vtable_index_name, |
80662eda MD |
2248 | scm_i_get_keyword (k_name, |
2249 | args, | |
2250 | len - 1, | |
4a655e50 | 2251 | scm_from_latin1_symbol ("???"), |
dcb410ec | 2252 | FUNC_NAME)); |
6d77c894 | 2253 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2254 | scm_i_get_keyword (k_dsupers, |
2255 | args, | |
2256 | len - 1, | |
2257 | SCM_EOL, | |
dcb410ec | 2258 | FUNC_NAME)); |
6d77c894 | 2259 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2260 | scm_i_get_keyword (k_slots, |
2261 | args, | |
2262 | len - 1, | |
2263 | SCM_EOL, | |
dcb410ec | 2264 | FUNC_NAME)); |
80662eda MD |
2265 | } |
2266 | } | |
2267 | return z; | |
2268 | } | |
398d8ee1 | 2269 | #undef FUNC_NAME |
80662eda | 2270 | |
398d8ee1 KN |
2271 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2272 | (SCM l), | |
2273 | "") | |
2274 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2275 | { |
2276 | SCM gf; | |
c014a02e | 2277 | long len = scm_ilength (l); |
80662eda MD |
2278 | |
2279 | if (len == 0) | |
398d8ee1 | 2280 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2281 | |
2282 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2283 | SCM_VALIDATE_GENERIC (1, gf); |
d2e53ed6 | 2284 | if (scm_is_null (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2285 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2286 | |
2287 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2288 | } | |
398d8ee1 | 2289 | #undef FUNC_NAME |
80662eda | 2290 | |
398d8ee1 KN |
2291 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2292 | (SCM m1, SCM m2, SCM targs), | |
b1f57ea4 LC |
2293 | "Return true if method @var{m1} is more specific than @var{m2} " |
2294 | "given the argument types (classes) listed in @var{targs}.") | |
398d8ee1 | 2295 | #define FUNC_NAME s_scm_sys_method_more_specific_p |
80662eda | 2296 | { |
4057a3e0 MV |
2297 | SCM l, v, result; |
2298 | SCM *v_elts; | |
b1f57ea4 | 2299 | long i, len, m1_specs, m2_specs; |
4057a3e0 | 2300 | scm_t_array_handle handle; |
80662eda | 2301 | |
398d8ee1 KN |
2302 | SCM_VALIDATE_METHOD (1, m1); |
2303 | SCM_VALIDATE_METHOD (2, m2); | |
80662eda | 2304 | |
b1f57ea4 LC |
2305 | len = scm_ilength (targs); |
2306 | m1_specs = scm_ilength (SPEC_OF (m1)); | |
2307 | m2_specs = scm_ilength (SPEC_OF (m2)); | |
2308 | SCM_ASSERT ((len >= m1_specs) || (len >= m2_specs), | |
2309 | targs, SCM_ARG3, FUNC_NAME); | |
2310 | ||
2311 | /* Verify that all the arguments of TARGS are classes and place them | |
2312 | in a vector. */ | |
4057a3e0 | 2313 | |
00ffa0e7 | 2314 | v = scm_c_make_vector (len, SCM_EOL); |
4057a3e0 | 2315 | v_elts = scm_vector_writable_elements (v, &handle, NULL, NULL); |
80662eda | 2316 | |
b1f57ea4 LC |
2317 | for (i = 0, l = targs; |
2318 | i < len && scm_is_pair (l); | |
2319 | i++, l = SCM_CDR (l)) | |
4057a3e0 MV |
2320 | { |
2321 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); | |
b1f57ea4 | 2322 | v_elts[i] = SCM_CAR (l); |
4057a3e0 | 2323 | } |
4057a3e0 | 2324 | result = more_specificp (m1, m2, v_elts) ? SCM_BOOL_T: SCM_BOOL_F; |
c8857a4d MV |
2325 | |
2326 | scm_array_handle_release (&handle); | |
2327 | ||
4057a3e0 | 2328 | return result; |
80662eda | 2329 | } |
398d8ee1 | 2330 | #undef FUNC_NAME |
6d77c894 TTN |
2331 | |
2332 | ||
80662eda MD |
2333 | |
2334 | /****************************************************************************** | |
2335 | * | |
6d77c894 | 2336 | * Initializations |
80662eda MD |
2337 | * |
2338 | ******************************************************************************/ | |
2339 | ||
ae88d9bc AW |
2340 | /* Munge the CPL of C in place such that BEFORE appears before AFTER, |
2341 | assuming that currently the reverse is true. Recalculate slots and | |
2342 | associated getters-n-setters. */ | |
74b6d6e4 MD |
2343 | static void |
2344 | fix_cpl (SCM c, SCM before, SCM after) | |
2345 | { | |
2346 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2347 | SCM ls = scm_c_memq (after, cpl); | |
ae88d9bc AW |
2348 | SCM tail; |
2349 | ||
7888309b | 2350 | if (scm_is_false (ls)) |
74b6d6e4 MD |
2351 | /* if this condition occurs, fix_cpl should not be applied this way */ |
2352 | abort (); | |
ae88d9bc AW |
2353 | |
2354 | tail = scm_delq1_x (before, SCM_CDR (ls)); | |
74b6d6e4 MD |
2355 | SCM_SETCAR (ls, before); |
2356 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2357 | { | |
2358 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2359 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2360 | SCM g_n_s = compute_getters_n_setters (slots); | |
2361 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2362 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2363 | } | |
2364 | } | |
2365 | ||
80662eda MD |
2366 | |
2367 | static void | |
2368 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2369 | { | |
cc95e00a | 2370 | SCM tmp = scm_from_locale_symbol (name); |
6d77c894 | 2371 | |
f39448c5 AW |
2372 | *var = scm_basic_make_class (meta, tmp, |
2373 | scm_is_pair (super) ? super : scm_list_1 (super), | |
2374 | slots); | |
80662eda MD |
2375 | DEFVAR(tmp, *var); |
2376 | } | |
2377 | ||
2378 | ||
2379 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2380 | ||
2381 | static void | |
2382 | create_standard_classes (void) | |
2383 | { | |
2384 | SCM slots; | |
4a655e50 AW |
2385 | SCM method_slots = scm_list_n (scm_from_latin1_symbol ("generic-function"), |
2386 | scm_from_latin1_symbol ("specializers"), | |
6b80d352 | 2387 | sym_procedure, |
4a655e50 AW |
2388 | scm_from_latin1_symbol ("formals"), |
2389 | scm_from_latin1_symbol ("body"), | |
2390 | scm_from_latin1_symbol ("make-procedure"), | |
21497600 | 2391 | SCM_UNDEFINED); |
4a655e50 | 2392 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("slot-definition"), |
1afff620 KN |
2393 | k_init_keyword, |
2394 | k_slot_definition)); | |
4a655e50 AW |
2395 | SCM gf_slots = scm_list_4 (scm_from_latin1_symbol ("methods"), |
2396 | scm_list_3 (scm_from_latin1_symbol ("n-specialized"), | |
1afff620 KN |
2397 | k_init_value, |
2398 | SCM_INUM0), | |
4a655e50 | 2399 | scm_list_3 (scm_from_latin1_symbol ("extended-by"), |
bbf8d523 | 2400 | k_init_value, |
b6cf4d02 | 2401 | SCM_EOL), |
4a655e50 | 2402 | scm_from_latin1_symbol ("effective-methods")); |
a9a90a88 | 2403 | SCM setter_slots = scm_list_1 (sym_setter); |
4a655e50 | 2404 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("extends"), |
bbf8d523 MD |
2405 | k_init_value, |
2406 | SCM_EOL)); | |
80662eda MD |
2407 | /* Foreign class slot classes */ |
2408 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2409 | scm_class_class, scm_class_top, SCM_EOL); | |
2410 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2411 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
b6cf4d02 AW |
2412 | make_stdcls (&scm_class_hidden, "<hidden-slot>", |
2413 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
80662eda MD |
2414 | make_stdcls (&scm_class_opaque, "<opaque-slot>", |
2415 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2416 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2417 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2418 | make_stdcls (&scm_class_self, "<self-slot>", | |
b6cf4d02 | 2419 | scm_class_class, scm_class_read_only, SCM_EOL); |
80662eda MD |
2420 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", |
2421 | scm_class_class, | |
1afff620 | 2422 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda | 2423 | SCM_EOL); |
b6cf4d02 AW |
2424 | make_stdcls (&scm_class_protected_hidden, "<protected-hidden-slot>", |
2425 | scm_class_class, | |
2426 | scm_list_2 (scm_class_protected, scm_class_hidden), | |
2427 | SCM_EOL); | |
80662eda MD |
2428 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", |
2429 | scm_class_class, | |
1afff620 | 2430 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2431 | SCM_EOL); |
2432 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2433 | scm_class_class, scm_class_protected, SCM_EOL); | |
2434 | make_stdcls (&scm_class_int, "<int-slot>", | |
2435 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2436 | make_stdcls (&scm_class_float, "<float-slot>", | |
2437 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2438 | make_stdcls (&scm_class_double, "<double-slot>", | |
2439 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2440 | ||
2441 | /* Continue initialization of class <class> */ | |
6d77c894 | 2442 | |
80662eda | 2443 | slots = build_class_class_slots (); |
dcb410ec DH |
2444 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2445 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2446 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2447 | compute_getters_n_setters (slots)); | |
6d77c894 | 2448 | |
80662eda MD |
2449 | /* scm_class_generic functions classes */ |
2450 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2451 | scm_class_class, scm_class_class, SCM_EOL); | |
51f66c91 | 2452 | make_stdcls (&scm_class_applicable_struct_class, "<applicable-struct-class>", |
80662eda | 2453 | scm_class_class, scm_class_procedure_class, SCM_EOL); |
2f652c68 | 2454 | SCM_SET_VTABLE_FLAGS (scm_class_applicable_struct_class, SCM_VTABLE_FLAG_APPLICABLE_VTABLE); |
80662eda MD |
2455 | make_stdcls (&scm_class_method, "<method>", |
2456 | scm_class_class, scm_class_object, method_slots); | |
f8af5c6d | 2457 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
51f66c91 | 2458 | scm_class_class, scm_class_method, amethod_slots); |
74b6d6e4 MD |
2459 | make_stdcls (&scm_class_applicable, "<applicable>", |
2460 | scm_class_class, scm_class_top, SCM_EOL); | |
51f66c91 AW |
2461 | make_stdcls (&scm_class_applicable_struct, "<applicable-struct>", |
2462 | scm_class_applicable_struct_class, | |
74b6d6e4 | 2463 | scm_list_2 (scm_class_object, scm_class_applicable), |
51f66c91 | 2464 | scm_list_1 (sym_procedure)); |
80662eda | 2465 | make_stdcls (&scm_class_generic, "<generic>", |
51f66c91 | 2466 | scm_class_applicable_struct_class, scm_class_applicable_struct, gf_slots); |
80662eda | 2467 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 | 2468 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
51f66c91 | 2469 | scm_class_applicable_struct_class, scm_class_generic, egf_slots); |
bbf8d523 | 2470 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda | 2471 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
51f66c91 | 2472 | scm_class_applicable_struct_class, scm_class_generic, setter_slots); |
80662eda | 2473 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d | 2474 | make_stdcls (&scm_class_accessor, "<accessor>", |
51f66c91 | 2475 | scm_class_applicable_struct_class, scm_class_generic_with_setter, SCM_EOL); |
f8af5c6d | 2476 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 MD |
2477 | make_stdcls (&scm_class_extended_generic_with_setter, |
2478 | "<extended-generic-with-setter>", | |
51f66c91 | 2479 | scm_class_applicable_struct_class, |
ae88d9bc AW |
2480 | scm_list_2 (scm_class_extended_generic, |
2481 | scm_class_generic_with_setter), | |
bbf8d523 MD |
2482 | SCM_EOL); |
2483 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2484 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 | 2485 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
51f66c91 | 2486 | scm_class_applicable_struct_class, |
74b6d6e4 MD |
2487 | scm_list_2 (scm_class_accessor, |
2488 | scm_class_extended_generic_with_setter), | |
2489 | SCM_EOL); | |
ae88d9bc | 2490 | /* <extended-generic> is misplaced. */ |
74b6d6e4 | 2491 | fix_cpl (scm_class_extended_accessor, |
ae88d9bc | 2492 | scm_class_extended_generic, scm_class_generic_with_setter); |
74b6d6e4 | 2493 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2494 | |
2495 | /* Primitive types classes */ | |
2496 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2497 | scm_class_class, scm_class_top, SCM_EOL); | |
2498 | make_stdcls (&scm_class_char, "<char>", | |
2499 | scm_class_class, scm_class_top, SCM_EOL); | |
2500 | make_stdcls (&scm_class_list, "<list>", | |
2501 | scm_class_class, scm_class_top, SCM_EOL); | |
2502 | make_stdcls (&scm_class_pair, "<pair>", | |
2503 | scm_class_class, scm_class_list, SCM_EOL); | |
2504 | make_stdcls (&scm_class_null, "<null>", | |
2505 | scm_class_class, scm_class_list, SCM_EOL); | |
2506 | make_stdcls (&scm_class_string, "<string>", | |
2507 | scm_class_class, scm_class_top, SCM_EOL); | |
2508 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2509 | scm_class_class, scm_class_top, SCM_EOL); | |
2510 | make_stdcls (&scm_class_vector, "<vector>", | |
2511 | scm_class_class, scm_class_top, SCM_EOL); | |
e2c2a699 AW |
2512 | make_stdcls (&class_foreign, "<foreign>", |
2513 | scm_class_class, scm_class_top, SCM_EOL); | |
9ea31741 AW |
2514 | make_stdcls (&class_hashtable, "<hashtable>", |
2515 | scm_class_class, scm_class_top, SCM_EOL); | |
2516 | make_stdcls (&class_fluid, "<fluid>", | |
2517 | scm_class_class, scm_class_top, SCM_EOL); | |
2518 | make_stdcls (&class_dynamic_state, "<dynamic-state>", | |
c99de5aa | 2519 | scm_class_class, scm_class_top, SCM_EOL); |
6f3b0cc2 AW |
2520 | make_stdcls (&class_frame, "<frame>", |
2521 | scm_class_class, scm_class_top, SCM_EOL); | |
2522 | make_stdcls (&class_objcode, "<objcode>", | |
2523 | scm_class_class, scm_class_top, SCM_EOL); | |
2524 | make_stdcls (&class_vm, "<vm>", | |
2525 | scm_class_class, scm_class_top, SCM_EOL); | |
2526 | make_stdcls (&class_vm_cont, "<vm-continuation>", | |
2527 | scm_class_class, scm_class_top, SCM_EOL); | |
f826a886 AW |
2528 | make_stdcls (&class_bytevector, "<bytevector>", |
2529 | scm_class_class, scm_class_top, SCM_EOL); | |
2530 | make_stdcls (&class_uvec, "<uvec>", | |
2531 | scm_class_class, class_bytevector, SCM_EOL); | |
b2637c98 AW |
2532 | make_stdcls (&class_array, "<array>", |
2533 | scm_class_class, scm_class_top, SCM_EOL); | |
ff1feca9 AW |
2534 | make_stdcls (&class_bitvector, "<bitvector>", |
2535 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda MD |
2536 | make_stdcls (&scm_class_number, "<number>", |
2537 | scm_class_class, scm_class_top, SCM_EOL); | |
2538 | make_stdcls (&scm_class_complex, "<complex>", | |
2539 | scm_class_class, scm_class_number, SCM_EOL); | |
2540 | make_stdcls (&scm_class_real, "<real>", | |
2541 | scm_class_class, scm_class_complex, SCM_EOL); | |
2542 | make_stdcls (&scm_class_integer, "<integer>", | |
2543 | scm_class_class, scm_class_real, SCM_EOL); | |
f92e85f7 MV |
2544 | make_stdcls (&scm_class_fraction, "<fraction>", |
2545 | scm_class_class, scm_class_real, SCM_EOL); | |
80662eda MD |
2546 | make_stdcls (&scm_class_keyword, "<keyword>", |
2547 | scm_class_class, scm_class_top, SCM_EOL); | |
2548 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2549 | scm_class_class, scm_class_top, SCM_EOL); | |
2550 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2551 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2552 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", |
2553 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2554 | make_stdcls (&scm_class_port, "<port>", | |
2555 | scm_class_class, scm_class_top, SCM_EOL); | |
2556 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2557 | scm_class_class, scm_class_port, SCM_EOL); | |
2558 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2559 | scm_class_class, scm_class_port, SCM_EOL); | |
2560 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2561 | scm_class_class, | |
1afff620 | 2562 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2563 | SCM_EOL); |
2564 | } | |
2565 | ||
2566 | /********************************************************************** | |
2567 | * | |
2568 | * Smob classes | |
2569 | * | |
2570 | **********************************************************************/ | |
2571 | ||
2572 | static SCM | |
da0e6c2b | 2573 | make_class_from_template (char const *template, char const *type_name, SCM supers, int applicablep) |
80662eda MD |
2574 | { |
2575 | SCM class, name; | |
2576 | if (type_name) | |
2577 | { | |
2578 | char buffer[100]; | |
2579 | sprintf (buffer, template, type_name); | |
cc95e00a | 2580 | name = scm_from_locale_symbol (buffer); |
80662eda MD |
2581 | } |
2582 | else | |
2583 | name = SCM_GOOPS_UNBOUND; | |
2584 | ||
f39448c5 AW |
2585 | class = scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2586 | name, supers, SCM_EOL); | |
80662eda MD |
2587 | |
2588 | /* Only define name if doesn't already exist. */ | |
2589 | if (!SCM_GOOPS_UNBOUNDP (name) | |
bef95911 | 2590 | && scm_is_false (scm_module_variable (scm_module_goops, name))) |
0ba8a0a5 | 2591 | DEFVAR (name, class); |
80662eda MD |
2592 | return class; |
2593 | } | |
2594 | ||
9db8cf16 MG |
2595 | static SCM |
2596 | make_class_from_symbol (SCM type_name_sym, SCM supers, int applicablep) | |
2597 | { | |
2598 | SCM class, name; | |
393baa8a | 2599 | if (scm_is_true (type_name_sym)) |
9db8cf16 MG |
2600 | { |
2601 | name = scm_string_append (scm_list_3 (scm_from_locale_string ("<"), | |
2602 | scm_symbol_to_string (type_name_sym), | |
2603 | scm_from_locale_string (">"))); | |
2604 | name = scm_string_to_symbol (name); | |
2605 | } | |
2606 | else | |
2607 | name = SCM_GOOPS_UNBOUND; | |
2608 | ||
f39448c5 AW |
2609 | class = scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2610 | name, supers, SCM_EOL); | |
9db8cf16 MG |
2611 | |
2612 | /* Only define name if doesn't already exist. */ | |
2613 | if (!SCM_GOOPS_UNBOUNDP (name) | |
2614 | && scm_is_false (scm_module_variable (scm_module_goops, name))) | |
2615 | DEFVAR (name, class); | |
2616 | return class; | |
2617 | } | |
2618 | ||
80662eda | 2619 | SCM |
da0e6c2b | 2620 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda MD |
2621 | { |
2622 | return make_class_from_template ("<%s>", | |
2623 | type_name, | |
74b6d6e4 MD |
2624 | scm_list_1 (applicablep |
2625 | ? scm_class_applicable | |
2626 | : scm_class_top), | |
2627 | applicablep); | |
2628 | } | |
2629 | ||
9db8cf16 MG |
2630 | static SCM |
2631 | scm_make_extended_class_from_symbol (SCM type_name_sym, int applicablep) | |
2632 | { | |
2633 | return make_class_from_symbol (type_name_sym, | |
2634 | scm_list_1 (applicablep | |
2635 | ? scm_class_applicable | |
2636 | : scm_class_top), | |
2637 | applicablep); | |
2638 | } | |
2639 | ||
74b6d6e4 MD |
2640 | void |
2641 | scm_i_inherit_applicable (SCM c) | |
2642 | { | |
2643 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2644 | { | |
2645 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2646 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2647 | /* patch scm_class_applicable into direct-supers */ | |
2648 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
7888309b | 2649 | if (scm_is_false (top)) |
74b6d6e4 MD |
2650 | dsupers = scm_append (scm_list_2 (dsupers, |
2651 | scm_list_1 (scm_class_applicable))); | |
2652 | else | |
2653 | { | |
2654 | SCM_SETCAR (top, scm_class_applicable); | |
2655 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2656 | } | |
2657 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2658 | /* patch scm_class_applicable into cpl */ | |
2659 | top = scm_c_memq (scm_class_top, cpl); | |
7888309b | 2660 | if (scm_is_false (top)) |
74b6d6e4 MD |
2661 | abort (); |
2662 | else | |
2663 | { | |
2664 | SCM_SETCAR (top, scm_class_applicable); | |
2665 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2666 | } | |
2667 | /* add class to direct-subclasses of scm_class_applicable */ | |
2668 | SCM_SET_SLOT (scm_class_applicable, | |
2669 | scm_si_direct_subclasses, | |
2670 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2671 | scm_si_direct_subclasses))); | |
2672 | } | |
80662eda MD |
2673 | } |
2674 | ||
2675 | static void | |
2676 | create_smob_classes (void) | |
2677 | { | |
c014a02e | 2678 | long i; |
80662eda | 2679 | |
c891a40e | 2680 | for (i = 0; i < SCM_I_MAX_SMOB_TYPE_COUNT; ++i) |
393baa8a | 2681 | scm_smob_class[i] = SCM_BOOL_F; |
80662eda | 2682 | |
80662eda | 2683 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; |
6d77c894 | 2684 | |
80662eda | 2685 | for (i = 0; i < scm_numsmob; ++i) |
393baa8a | 2686 | if (scm_is_false (scm_smob_class[i])) |
74b6d6e4 MD |
2687 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2688 | scm_smobs[i].apply != 0); | |
80662eda MD |
2689 | } |
2690 | ||
2691 | void | |
c014a02e | 2692 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2693 | { |
2694 | SCM c, class = make_class_from_template ("<%s-port>", | |
2695 | type_name, | |
74b6d6e4 MD |
2696 | scm_list_1 (scm_class_port), |
2697 | 0); | |
80662eda MD |
2698 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2699 | = make_class_from_template ("<%s-input-port>", | |
2700 | type_name, | |
74b6d6e4 MD |
2701 | scm_list_2 (class, scm_class_input_port), |
2702 | 0); | |
80662eda MD |
2703 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2704 | = make_class_from_template ("<%s-output-port>", | |
2705 | type_name, | |
74b6d6e4 MD |
2706 | scm_list_2 (class, scm_class_output_port), |
2707 | 0); | |
80662eda MD |
2708 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2709 | = c | |
2710 | = make_class_from_template ("<%s-input-output-port>", | |
2711 | type_name, | |
74b6d6e4 MD |
2712 | scm_list_2 (class, scm_class_input_output_port), |
2713 | 0); | |
80662eda | 2714 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2715 | SCM_SET_SLOT (c, scm_si_cpl, |
2716 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2717 | } |
2718 | ||
2719 | static void | |
2720 | create_port_classes (void) | |
2721 | { | |
c014a02e | 2722 | long i; |
80662eda | 2723 | |
80662eda MD |
2724 | for (i = 0; i < scm_numptob; ++i) |
2725 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2726 | } | |
2727 | ||
2728 | static SCM | |
74b6d6e4 MD |
2729 | make_struct_class (void *closure SCM_UNUSED, |
2730 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2731 | { |
f3c6a02c AW |
2732 | if (scm_is_false (data)) |
2733 | scm_i_define_class_for_vtable (vtable); | |
80662eda MD |
2734 | return SCM_UNSPECIFIED; |
2735 | } | |
2736 | ||
2737 | static void | |
2738 | create_struct_classes (void) | |
2739 | { | |
ea742d29 | 2740 | /* FIXME: take the vtable_class_map while initializing goops? */ |
f3c6a02c AW |
2741 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, |
2742 | vtable_class_map); | |
80662eda MD |
2743 | } |
2744 | ||
2745 | /********************************************************************** | |
2746 | * | |
2747 | * C interface | |
2748 | * | |
2749 | **********************************************************************/ | |
2750 | ||
2751 | void | |
2752 | scm_load_goops () | |
2753 | { | |
2754 | if (!goops_loaded_p) | |
abd28220 | 2755 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2756 | } |
2757 | ||
e11208ca | 2758 | |
80662eda MD |
2759 | SCM_SYMBOL (sym_o, "o"); |
2760 | SCM_SYMBOL (sym_x, "x"); | |
2761 | ||
2762 | SCM_KEYWORD (k_accessor, "accessor"); | |
2763 | SCM_KEYWORD (k_getter, "getter"); | |
2764 | ||
80662eda MD |
2765 | SCM |
2766 | scm_ensure_accessor (SCM name) | |
2767 | { | |
3f48638c AW |
2768 | SCM var, gf; |
2769 | ||
2770 | var = scm_module_variable (scm_current_module (), name); | |
2771 | if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var))) | |
2772 | gf = SCM_VARIABLE_REF (var); | |
2773 | else | |
2774 | gf = SCM_BOOL_F; | |
2775 | ||
f8af5c6d | 2776 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2777 | { |
1afff620 | 2778 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2779 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2780 | k_name, name, k_setter, gf)); |
80662eda | 2781 | } |
3f48638c | 2782 | |
80662eda MD |
2783 | return gf; |
2784 | } | |
2785 | ||
80662eda MD |
2786 | #ifdef GUILE_DEBUG |
2787 | /* | |
2788 | * Debugging utilities | |
2789 | */ | |
2790 | ||
398d8ee1 KN |
2791 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2792 | (SCM obj), | |
6bcefd15 | 2793 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2794 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2795 | { |
7888309b | 2796 | return scm_from_bool (SCM_PUREGENERICP (obj)); |
80662eda | 2797 | } |
398d8ee1 | 2798 | #undef FUNC_NAME |
80662eda MD |
2799 | |
2800 | #endif /* GUILE_DEBUG */ | |
2801 | ||
2802 | /* | |
2803 | * Initialization | |
2804 | */ | |
2805 | ||
398d8ee1 KN |
2806 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2807 | (), | |
6bcefd15 MG |
2808 | "Announce that GOOPS is loaded and perform initialization\n" |
2809 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2810 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2811 | { |
2812 | goops_loaded_p = 1; | |
86d31dfe | 2813 | var_compute_applicable_methods = |
f39448c5 | 2814 | scm_module_variable (scm_module_goops, sym_compute_applicable_methods); |
bef95911 | 2815 | var_slot_unbound = |
f39448c5 | 2816 | scm_module_variable (scm_module_goops, sym_slot_unbound); |
bef95911 | 2817 | var_slot_missing = |
f39448c5 | 2818 | scm_module_variable (scm_module_goops, sym_slot_missing); |
bef95911 | 2819 | var_compute_cpl = |
f39448c5 | 2820 | scm_module_variable (scm_module_goops, sym_compute_cpl); |
bef95911 | 2821 | var_no_applicable_method = |
f39448c5 | 2822 | scm_module_variable (scm_module_goops, sym_no_applicable_method); |
bef95911 | 2823 | var_change_class = |
f39448c5 | 2824 | scm_module_variable (scm_module_goops, sym_change_class); |
a48d60b1 | 2825 | setup_extended_primitive_generics (); |
80662eda MD |
2826 | return SCM_UNSPECIFIED; |
2827 | } | |
398d8ee1 | 2828 | #undef FUNC_NAME |
80662eda MD |
2829 | |
2830 | SCM scm_module_goops; | |
2831 | ||
abd28220 MV |
2832 | SCM |
2833 | scm_init_goops_builtins (void) | |
80662eda | 2834 | { |
abd28220 | 2835 | scm_module_goops = scm_current_module (); |
80662eda | 2836 | |
80662eda MD |
2837 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); |
2838 | ||
2839 | #include "libguile/goops.x" | |
2840 | ||
bb764c0e | 2841 | hell = scm_calloc (hell_size * sizeof (*hell)); |
f39448c5 | 2842 | hell_mutex = scm_make_mutex (); |
80662eda MD |
2843 | |
2844 | create_basic_classes (); | |
2845 | create_standard_classes (); | |
2846 | create_smob_classes (); | |
2847 | create_struct_classes (); | |
2848 | create_port_classes (); | |
2849 | ||
2850 | { | |
4a655e50 | 2851 | SCM name = scm_from_latin1_symbol ("no-applicable-method"); |
f39448c5 AW |
2852 | scm_no_applicable_method = |
2853 | scm_make (scm_list_3 (scm_class_generic, k_name, name)); | |
80662eda MD |
2854 | DEFVAR (name, scm_no_applicable_method); |
2855 | } | |
abd28220 MV |
2856 | |
2857 | return SCM_UNSPECIFIED; | |
80662eda MD |
2858 | } |
2859 | ||
2860 | void | |
abd28220 | 2861 | scm_init_goops () |
80662eda | 2862 | { |
9a441ddb MV |
2863 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2864 | scm_init_goops_builtins); | |
80662eda | 2865 | } |
23437298 DH |
2866 | |
2867 | /* | |
2868 | Local Variables: | |
2869 | c-file-style: "gnu" | |
2870 | End: | |
2871 | */ |