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726d810a | 1 | /* Copyright (C) 1998,1999,2000,2001 Free Software Foundation, Inc. |
80662eda MD |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
41 | \f | |
42 | ||
43 | /* This software is a derivative work of other copyrighted softwares; the | |
44 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
45 | * | |
46 | * This file is based upon stklos.c from the STk distribution by | |
47 | * Erick Gallesio <eg@unice.fr>. | |
48 | */ | |
49 | ||
50 | #include <stdio.h> | |
51 | ||
52 | #include "libguile/_scm.h" | |
53 | #include "libguile/alist.h" | |
54 | #include "libguile/debug.h" | |
55 | #include "libguile/dynl.h" | |
56 | #include "libguile/dynwind.h" | |
57 | #include "libguile/eval.h" | |
58 | #include "libguile/hashtab.h" | |
59 | #include "libguile/keywords.h" | |
60 | #include "libguile/macros.h" | |
61 | #include "libguile/modules.h" | |
62 | #include "libguile/objects.h" | |
63 | #include "libguile/ports.h" | |
64 | #include "libguile/procprop.h" | |
65 | #include "libguile/random.h" | |
fdc28395 | 66 | #include "libguile/root.h" |
80662eda MD |
67 | #include "libguile/smob.h" |
68 | #include "libguile/strings.h" | |
69 | #include "libguile/strports.h" | |
70 | #include "libguile/vectors.h" | |
71 | #include "libguile/weaks.h" | |
72 | ||
ca83b028 | 73 | #include "libguile/validate.h" |
80662eda MD |
74 | #include "libguile/goops.h" |
75 | ||
80662eda MD |
76 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
77 | ||
80662eda | 78 | #define DEFVAR(v,val) \ |
1afff620 KN |
79 | { scm_eval (scm_list_3 (scm_sym_define_public, (v), (val)), \ |
80 | scm_module_goops); } | |
80662eda MD |
81 | /* Temporary hack until we get the new module system */ |
82 | /*fixme* Should optimize by keeping track of the variable object itself */ | |
fdc28395 KN |
83 | #define GETVAR(v) (SCM_VARIABLE_REF (scm_call_2 (scm_goops_lookup_closure, \ |
84 | (v), SCM_BOOL_F))) | |
80662eda MD |
85 | |
86 | /* Fixme: Should use already interned symbols */ | |
1afff620 KN |
87 | #define CALL_GF1(name,a) (scm_call_1 (GETVAR (scm_str2symbol (name)), \ |
88 | a)) | |
89 | #define CALL_GF2(name,a,b) (scm_call_2 (GETVAR (scm_str2symbol (name)), \ | |
90 | a, b)) | |
91 | #define CALL_GF3(name,a,b,c) (scm_call_3 (GETVAR (scm_str2symbol (name)), \ | |
92 | a, b, c)) | |
93 | #define CALL_GF4(name,a,b,c,d) (scm_call_4 (GETVAR (scm_str2symbol (name)), \ | |
94 | a, b, c, d)) | |
80662eda MD |
95 | |
96 | /* Class redefinition protocol: | |
97 | ||
98 | A class is represented by a heap header h1 which points to a | |
99 | malloc:ed memory block m1. | |
100 | ||
101 | When a new version of a class is created, a new header h2 and | |
102 | memory block m2 are allocated. The headers h1 and h2 then switch | |
103 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
104 | bound to h1 will point to the new class at the same time as h2 will | |
105 | be a handle which the GC will us to free m1. | |
106 | ||
107 | The `redefined' slot of m1 will be set to point to h1. An old | |
108 | instance will have it's class pointer (the CAR of the heap header) | |
109 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates | |
110 | the class modification and the new class pointer can be found via | |
111 | h1. | |
112 | */ | |
113 | ||
80662eda MD |
114 | /* The following definition is located in libguile/objects.h: |
115 | #define SCM_OBJ_CLASS_REDEF(x) (SCM_STRUCT_VTABLE_DATA(x)[scm_si_redefined]) | |
116 | */ | |
117 | ||
118 | #define TEST_CHANGE_CLASS(obj, class) \ | |
119 | { \ | |
120 | class = SCM_CLASS_OF (obj); \ | |
121 | if (SCM_OBJ_CLASS_REDEF (obj) != SCM_BOOL_F) \ | |
122 | CALL_GF3 ("change-object-class", \ | |
123 | obj, class, SCM_OBJ_CLASS_REDEF (obj)); \ | |
124 | } | |
125 | ||
126 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
127 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
128 | ||
129 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
130 | #define SCM_GOOPS_UNBOUNDP(x) ((x) == SCM_GOOPS_UNBOUND) | |
131 | ||
132 | static int goops_loaded_p = 0; | |
92c2555f | 133 | static scm_t_rstate *goops_rstate; |
80662eda MD |
134 | |
135 | static SCM scm_goops_lookup_closure; | |
136 | ||
137 | /* Some classes are defined in libguile/objects.c. */ | |
138 | SCM scm_class_top, scm_class_object, scm_class_class; | |
139 | SCM scm_class_entity, scm_class_entity_with_setter; | |
140 | SCM scm_class_generic, scm_class_generic_with_setter, scm_class_method; | |
141 | SCM scm_class_simple_method, scm_class_accessor; | |
142 | SCM scm_class_procedure_class; | |
143 | SCM scm_class_operator_class, scm_class_operator_with_setter_class; | |
144 | SCM scm_class_entity_class; | |
145 | SCM scm_class_number, scm_class_list; | |
146 | SCM scm_class_keyword; | |
147 | SCM scm_class_port, scm_class_input_output_port; | |
148 | SCM scm_class_input_port, scm_class_output_port; | |
149 | SCM scm_class_foreign_class, scm_class_foreign_object; | |
150 | SCM scm_class_foreign_slot; | |
151 | SCM scm_class_self, scm_class_protected; | |
152 | SCM scm_class_opaque, scm_class_read_only; | |
153 | SCM scm_class_protected_opaque, scm_class_protected_read_only; | |
154 | SCM scm_class_scm; | |
155 | SCM scm_class_int, scm_class_float, scm_class_double; | |
156 | ||
157 | SCM_SYMBOL (scm_sym_define_public, "define-public"); | |
158 | ||
159 | static SCM scm_make_unbound (void); | |
160 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
161 | static SCM scm_assert_bound (SCM value, SCM obj); |
162 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
163 | static SCM scm_sys_goops_loaded (void); | |
80662eda MD |
164 | |
165 | /****************************************************************************** | |
166 | * | |
167 | * Compute-cpl | |
168 | * | |
169 | * This version doesn't handle multiple-inheritance. It serves only for | |
dcb410ec | 170 | * booting classes and will be overloaded in Scheme |
80662eda MD |
171 | * |
172 | ******************************************************************************/ | |
173 | ||
174 | #if 0 | |
175 | static SCM | |
176 | compute_cpl (SCM supers, SCM res) | |
177 | { | |
178 | return (SCM_NULLP (supers) | |
179 | ? scm_reverse (res) | |
180 | : compute_cpl (SCM_SLOT (SCM_CAR (supers), scm_si_direct_supers), | |
181 | scm_cons (SCM_CAR (supers), res))); | |
182 | } | |
183 | #endif | |
184 | ||
185 | static SCM | |
186 | map (SCM (*proc) (SCM), SCM ls) | |
187 | { | |
188 | if (SCM_IMP (ls)) | |
189 | return ls; | |
190 | { | |
191 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
192 | SCM h = res; | |
193 | ls = SCM_CDR (ls); | |
194 | while (SCM_NIMP (ls)) | |
195 | { | |
196 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
197 | h = SCM_CDR (h); | |
198 | ls = SCM_CDR (ls); | |
199 | } | |
200 | return res; | |
201 | } | |
202 | } | |
203 | ||
204 | static SCM | |
205 | filter_cpl (SCM ls) | |
206 | { | |
207 | SCM res = SCM_EOL; | |
208 | while (SCM_NIMP (ls)) | |
209 | { | |
210 | SCM el = SCM_CAR (ls); | |
79a3dafe | 211 | if (SCM_FALSEP (scm_c_memq (el, res))) |
80662eda MD |
212 | res = scm_cons (el, res); |
213 | ls = SCM_CDR (ls); | |
214 | } | |
215 | return res; | |
216 | } | |
217 | ||
218 | static SCM | |
219 | compute_cpl (SCM class) | |
220 | { | |
221 | if (goops_loaded_p) | |
222 | return CALL_GF1 ("compute-cpl", class); | |
223 | else | |
224 | { | |
225 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
226 | SCM ls = scm_append (scm_acons (class, supers, | |
227 | map (compute_cpl, supers))); | |
228 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
229 | } | |
230 | } | |
231 | ||
232 | /****************************************************************************** | |
233 | * | |
234 | * compute-slots | |
235 | * | |
236 | ******************************************************************************/ | |
237 | ||
238 | static SCM | |
239 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
240 | { | |
241 | SCM tmp; | |
242 | ||
243 | if (SCM_NULLP (l)) | |
244 | return res; | |
245 | ||
246 | tmp = SCM_CAAR (l); | |
c312aca7 | 247 | if (!SCM_SYMBOLP (tmp)) |
1afff620 | 248 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
80662eda | 249 | |
79a3dafe | 250 | if (SCM_FALSEP (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
251 | res = scm_cons (SCM_CAR (l), res); |
252 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
253 | } | |
254 | ||
255 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); | |
256 | } | |
257 | ||
258 | static SCM | |
259 | build_slots_list (SCM dslots, SCM cpl) | |
260 | { | |
261 | register SCM res = dslots; | |
262 | ||
263 | for (cpl = SCM_CDR(cpl); SCM_NNULLP(cpl); cpl = SCM_CDR(cpl)) | |
1afff620 KN |
264 | res = scm_append (scm_list_2 (SCM_SLOT (SCM_CAR (cpl), |
265 | scm_si_direct_slots), | |
266 | res)); | |
80662eda MD |
267 | |
268 | /* res contains a list of slots. Remove slots which appears more than once */ | |
269 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
270 | } | |
271 | ||
272 | static SCM | |
273 | maplist (SCM ls) | |
274 | { | |
275 | SCM orig = ls; | |
276 | while (SCM_NIMP (ls)) | |
277 | { | |
c312aca7 | 278 | if (!SCM_CONSP (SCM_CAR (ls))) |
80662eda MD |
279 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
280 | ls = SCM_CDR (ls); | |
281 | } | |
282 | return orig; | |
283 | } | |
284 | ||
80662eda | 285 | |
23437298 DH |
286 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
287 | (SCM class), | |
5352393c MG |
288 | "Return a list consisting of the names of all slots belonging to\n" |
289 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
290 | "its superclasses.") | |
23437298 | 291 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 292 | { |
398d8ee1 | 293 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
294 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
295 | SCM_SLOT (class, scm_si_cpl)); | |
296 | } | |
23437298 DH |
297 | #undef FUNC_NAME |
298 | ||
80662eda MD |
299 | |
300 | /****************************************************************************** | |
301 | * | |
302 | * compute-getters-n-setters | |
303 | * | |
304 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 305 | * classes and will be overloaded in Scheme. |
80662eda MD |
306 | * |
307 | ******************************************************************************/ | |
308 | ||
309 | SCM_KEYWORD (k_init_value, "init-value"); | |
310 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
311 | ||
312 | static SCM | |
313 | compute_getters_n_setters (SCM slots) | |
314 | { | |
315 | SCM res = SCM_EOL; | |
316 | SCM *cdrloc = &res; | |
c014a02e | 317 | long i = 0; |
80662eda MD |
318 | |
319 | for ( ; SCM_NNULLP(slots); slots = SCM_CDR(slots)) | |
320 | { | |
321 | SCM init = SCM_BOOL_F; | |
322 | SCM options = SCM_CDAR (slots); | |
323 | if (SCM_NNULLP (options)) | |
324 | { | |
325 | init = scm_get_keyword (k_init_value, options, 0); | |
326 | if (init) | |
1afff620 | 327 | init = scm_closure (scm_list_2 (SCM_EOL, init), SCM_EOL); |
80662eda MD |
328 | else |
329 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
330 | } | |
331 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
332 | scm_cons (init, | |
333 | SCM_MAKINUM (i++))), | |
334 | SCM_EOL); | |
335 | cdrloc = SCM_CDRLOC (*cdrloc); | |
336 | } | |
337 | return res; | |
338 | } | |
339 | ||
340 | /****************************************************************************** | |
341 | * | |
342 | * initialize-object | |
343 | * | |
344 | ******************************************************************************/ | |
345 | ||
346 | /*fixme* Manufacture keywords in advance */ | |
347 | SCM | |
c014a02e | 348 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 349 | { |
c014a02e | 350 | long i; |
23437298 DH |
351 | |
352 | for (i = 0; i != len; i += 2) | |
80662eda | 353 | { |
23437298 DH |
354 | SCM obj = SCM_CAR (l); |
355 | ||
356 | if (!SCM_KEYWORDP (obj)) | |
1afff620 | 357 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
23437298 | 358 | else if (SCM_EQ_P (obj, key)) |
80662eda | 359 | return SCM_CADR (l); |
23437298 DH |
360 | else |
361 | l = SCM_CDDR (l); | |
80662eda | 362 | } |
23437298 | 363 | |
80662eda MD |
364 | return default_value; |
365 | } | |
366 | ||
80662eda | 367 | |
23437298 DH |
368 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
369 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
370 | "Determine an associated value for the keyword @var{key} from\n" |
371 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
372 | "number of elements, where, starting with the first, every\n" | |
373 | "second element is a keyword, followed by its associated value.\n" | |
374 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
375 | "@var{default_value} is returned.") | |
23437298 | 376 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 377 | { |
c014a02e | 378 | long len; |
23437298 DH |
379 | |
380 | SCM_ASSERT (SCM_KEYWORDP (key), key, SCM_ARG1, FUNC_NAME); | |
80662eda | 381 | len = scm_ilength (l); |
b6311c08 | 382 | if (len < 0 || len % 2 == 1) |
1afff620 | 383 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
384 | |
385 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 386 | } |
23437298 DH |
387 | #undef FUNC_NAME |
388 | ||
80662eda | 389 | |
80662eda MD |
390 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
391 | ||
392 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
393 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
394 | ||
398d8ee1 KN |
395 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
396 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
397 | "Initialize the object @var{obj} with the given arguments\n" |
398 | "@var{initargs}.") | |
398d8ee1 | 399 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
400 | { |
401 | SCM tmp, get_n_set, slots; | |
402 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 403 | long n_initargs; |
80662eda | 404 | |
398d8ee1 | 405 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 406 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 407 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
80662eda MD |
408 | |
409 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); | |
410 | slots = SCM_SLOT (class, scm_si_slots); | |
411 | ||
412 | /* See for each slot how it must be initialized */ | |
413 | for (; | |
414 | SCM_NNULLP (slots); | |
415 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) | |
416 | { | |
417 | SCM slot_name = SCM_CAR (slots); | |
418 | SCM slot_value = 0; | |
419 | ||
420 | if (SCM_NIMP (SCM_CDR (slot_name))) | |
421 | { | |
422 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 423 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 424 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 425 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 426 | scm_list_1 (slot_name)); |
80662eda MD |
427 | tmp = scm_i_get_keyword (k_init_keyword, |
428 | SCM_CDR (slot_name), | |
429 | n, | |
430 | 0, | |
398d8ee1 | 431 | FUNC_NAME); |
80662eda MD |
432 | slot_name = SCM_CAR (slot_name); |
433 | if (tmp) | |
434 | { | |
435 | /* an initarg was provided for this slot */ | |
c312aca7 | 436 | if (!SCM_KEYWORDP (tmp)) |
398d8ee1 | 437 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 438 | scm_list_1 (tmp)); |
80662eda MD |
439 | slot_value = scm_i_get_keyword (tmp, |
440 | initargs, | |
441 | n_initargs, | |
442 | 0, | |
398d8ee1 | 443 | FUNC_NAME); |
80662eda MD |
444 | } |
445 | } | |
446 | ||
447 | if (slot_value) | |
448 | /* set slot to provided value */ | |
449 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
450 | else | |
451 | { | |
452 | /* set slot to its :init-form if it exists */ | |
453 | tmp = SCM_CADAR (get_n_set); | |
454 | if (tmp != SCM_BOOL_F) | |
455 | { | |
456 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
457 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
458 | { | |
459 | SCM env = SCM_EXTEND_ENV (SCM_EOL, SCM_EOL, SCM_ENV (tmp)); | |
460 | set_slot_value (class, | |
461 | obj, | |
462 | SCM_CAR (get_n_set), | |
463 | scm_eval_body (SCM_CDR (SCM_CODE (tmp)), | |
464 | env)); | |
465 | } | |
466 | } | |
467 | } | |
468 | } | |
469 | ||
470 | return obj; | |
471 | } | |
398d8ee1 | 472 | #undef FUNC_NAME |
80662eda MD |
473 | |
474 | ||
475 | SCM_KEYWORD (k_class, "class"); | |
476 | ||
398d8ee1 KN |
477 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
478 | (SCM class), | |
479 | "") | |
480 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 481 | { |
c014a02e | 482 | long i, n, len; |
80662eda MD |
483 | char *s, p, a; |
484 | SCM nfields, slots, type; | |
485 | ||
398d8ee1 | 486 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda MD |
487 | slots = SCM_SLOT (class, scm_si_slots); |
488 | nfields = SCM_SLOT (class, scm_si_nfields); | |
489 | if (!SCM_INUMP (nfields) || SCM_INUM (nfields) < 0) | |
398d8ee1 | 490 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 491 | scm_list_1 (nfields)); |
80662eda MD |
492 | n = 2 * SCM_INUM (nfields); |
493 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 | |
494 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 495 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 496 | scm_list_1 (nfields)); |
80662eda | 497 | |
398d8ee1 | 498 | s = n > 0 ? scm_must_malloc (n, FUNC_NAME) : 0; |
80662eda MD |
499 | for (i = 0; i < n; i += 2) |
500 | { | |
c312aca7 | 501 | if (!SCM_CONSP (slots)) |
398d8ee1 | 502 | SCM_MISC_ERROR ("to few slot definitions", SCM_EOL); |
80662eda MD |
503 | len = scm_ilength (SCM_CDAR (slots)); |
504 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), len, SCM_BOOL_F, | |
398d8ee1 | 505 | FUNC_NAME); |
80662eda MD |
506 | if (SCM_NIMP (type) && SCM_SUBCLASSP (type, scm_class_foreign_slot)) |
507 | { | |
508 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
509 | p = 's'; | |
510 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
511 | p = 'p'; | |
512 | else | |
513 | p = 'u'; | |
514 | ||
515 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
516 | a = 'o'; | |
517 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
518 | a = 'r'; | |
519 | else | |
520 | a = 'w'; | |
521 | } | |
522 | else | |
523 | { | |
524 | p = 'p'; | |
525 | a = 'w'; | |
526 | } | |
527 | s[i] = p; | |
528 | s[i + 1] = a; | |
529 | slots = SCM_CDR (slots); | |
530 | } | |
dcb410ec | 531 | SCM_SET_SLOT (class, scm_si_layout, scm_mem2symbol (s, n)); |
80662eda MD |
532 | if (s) |
533 | scm_must_free (s); | |
534 | return SCM_UNSPECIFIED; | |
535 | } | |
398d8ee1 | 536 | #undef FUNC_NAME |
80662eda MD |
537 | |
538 | static void prep_hashsets (SCM); | |
539 | ||
398d8ee1 KN |
540 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
541 | (SCM class, SCM dsupers), | |
542 | "") | |
543 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda MD |
544 | { |
545 | SCM ls = dsupers; | |
c014a02e | 546 | long flags = 0; |
398d8ee1 | 547 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda MD |
548 | while (SCM_NNULLP (ls)) |
549 | { | |
c312aca7 | 550 | SCM_ASSERT (SCM_CONSP (ls) |
80662eda MD |
551 | && SCM_INSTANCEP (SCM_CAR (ls)), |
552 | dsupers, | |
553 | SCM_ARG2, | |
398d8ee1 | 554 | FUNC_NAME); |
80662eda MD |
555 | flags |= SCM_CLASS_FLAGS (SCM_CAR (ls)); |
556 | ls = SCM_CDR (ls); | |
557 | } | |
558 | flags &= SCM_CLASSF_INHERIT; | |
559 | if (flags & SCM_CLASSF_ENTITY) | |
560 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_entity); | |
561 | else | |
562 | { | |
c014a02e | 563 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda MD |
564 | #if 0 |
565 | /* | |
566 | * We could avoid calling scm_must_malloc in the allocation code | |
567 | * (in which case the following two lines are needed). Instead | |
568 | * we make 0-slot instances non-light, so that the light case | |
569 | * can be handled without special cases. | |
570 | */ | |
571 | if (n == 0) | |
572 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_0); | |
573 | #endif | |
574 | if (n > 0 && !(flags & SCM_CLASSF_METACLASS)) | |
575 | { | |
576 | /* NOTE: The following depends on scm_struct_i_size. */ | |
577 | flags |= SCM_STRUCTF_LIGHT + n * sizeof (SCM); /* use light representation */ | |
578 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
579 | } | |
580 | } | |
581 | SCM_SET_CLASS_FLAGS (class, flags); | |
582 | ||
583 | prep_hashsets (class); | |
584 | ||
585 | return SCM_UNSPECIFIED; | |
586 | } | |
398d8ee1 | 587 | #undef FUNC_NAME |
80662eda MD |
588 | |
589 | void | |
590 | prep_hashsets (SCM class) | |
591 | { | |
dcb410ec | 592 | unsigned int i; |
80662eda MD |
593 | |
594 | for (i = 0; i < 7; ++i) | |
dcb410ec | 595 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
596 | } |
597 | ||
598 | /******************************************************************************/ | |
599 | ||
600 | SCM | |
601 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
602 | { | |
603 | SCM z, cpl, slots, nfields, g_n_s; | |
604 | ||
605 | /* Allocate one instance */ | |
606 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
607 | ||
608 | /* Initialize its slots */ | |
609 | #if 0 | |
1afff620 | 610 | cpl = compute_cpl (dsupers, scm_list_1 (z)); |
80662eda | 611 | #endif |
dcb410ec | 612 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
613 | cpl = compute_cpl (z); |
614 | slots = build_slots_list (maplist (dslots), cpl); | |
615 | nfields = SCM_MAKINUM (scm_ilength (slots)); | |
616 | g_n_s = compute_getters_n_setters (slots); | |
617 | ||
dcb410ec DH |
618 | SCM_SET_SLOT (z, scm_si_name, name); |
619 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); | |
620 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
621 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
622 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
623 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
624 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
625 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
626 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
627 | SCM_SET_SLOT (z, scm_si_environment, | |
628 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
629 | |
630 | /* Add this class in the direct-subclasses slot of dsupers */ | |
631 | { | |
632 | SCM tmp; | |
dcb410ec DH |
633 | for (tmp = dsupers; !SCM_NULLP (tmp); tmp = SCM_CDR (tmp)) |
634 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, | |
635 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
636 | scm_si_direct_subclasses))); | |
80662eda MD |
637 | } |
638 | ||
639 | /* Support for the underlying structs: */ | |
640 | SCM_SET_CLASS_FLAGS (z, (class == scm_class_entity_class | |
641 | ? (SCM_CLASSF_GOOPS_OR_VALID | |
642 | | SCM_CLASSF_OPERATOR | |
643 | | SCM_CLASSF_ENTITY) | |
644 | : class == scm_class_operator_class | |
645 | ? SCM_CLASSF_GOOPS_OR_VALID | SCM_CLASSF_OPERATOR | |
646 | : SCM_CLASSF_GOOPS_OR_VALID)); | |
647 | return z; | |
648 | } | |
649 | ||
650 | SCM | |
651 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
652 | { | |
653 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
654 | scm_sys_inherit_magic_x (z, dsupers); | |
655 | scm_sys_prep_layout_x (z); | |
656 | return z; | |
657 | } | |
658 | ||
659 | /******************************************************************************/ | |
660 | ||
661 | static SCM | |
662 | build_class_class_slots () | |
663 | { | |
664 | return maplist ( | |
1afff620 KN |
665 | scm_cons (scm_list_3 (scm_str2symbol ("layout"), |
666 | k_class, | |
667 | scm_class_protected_read_only), | |
668 | scm_cons (scm_list_3 (scm_str2symbol ("vcell"), | |
669 | k_class, | |
670 | scm_class_opaque), | |
671 | scm_cons (scm_list_3 (scm_str2symbol ("vtable"), | |
672 | k_class, | |
673 | scm_class_self), | |
38ae064c | 674 | scm_cons (scm_str2symbol ("print"), |
1afff620 KN |
675 | scm_cons (scm_list_3 (scm_str2symbol ("procedure"), |
676 | k_class, | |
677 | scm_class_protected_opaque), | |
678 | scm_cons (scm_list_3 (scm_str2symbol ("setter"), | |
679 | k_class, | |
680 | scm_class_protected_opaque), | |
38ae064c | 681 | scm_cons (scm_str2symbol ("redefined"), |
1afff620 KN |
682 | scm_cons (scm_list_3 (scm_str2symbol ("h0"), |
683 | k_class, | |
684 | scm_class_int), | |
685 | scm_cons (scm_list_3 (scm_str2symbol ("h1"), | |
686 | k_class, | |
687 | scm_class_int), | |
688 | scm_cons (scm_list_3 (scm_str2symbol ("h2"), | |
689 | k_class, | |
690 | scm_class_int), | |
691 | scm_cons (scm_list_3 (scm_str2symbol ("h3"), | |
692 | k_class, | |
693 | scm_class_int), | |
694 | scm_cons (scm_list_3 (scm_str2symbol ("h4"), | |
695 | k_class, | |
696 | scm_class_int), | |
697 | scm_cons (scm_list_3 (scm_str2symbol ("h5"), | |
698 | k_class, | |
699 | scm_class_int), | |
700 | scm_cons (scm_list_3 (scm_str2symbol ("h6"), | |
701 | k_class, | |
702 | scm_class_int), | |
703 | scm_cons (scm_list_3 (scm_str2symbol ("h7"), | |
704 | k_class, | |
705 | scm_class_int), | |
38ae064c DH |
706 | scm_cons (scm_str2symbol ("name"), |
707 | scm_cons (scm_str2symbol ("direct-supers"), | |
708 | scm_cons (scm_str2symbol ("direct-slots"), | |
709 | scm_cons (scm_str2symbol ("direct-subclasses"), | |
710 | scm_cons (scm_str2symbol ("direct-methods"), | |
711 | scm_cons (scm_str2symbol ("cpl"), | |
712 | scm_cons (scm_str2symbol ("default-slot-definition-class"), | |
713 | scm_cons (scm_str2symbol ("slots"), | |
714 | scm_cons (scm_str2symbol ("getters-n-setters"), /* name-access */ | |
715 | scm_cons (scm_str2symbol ("keyword-access"), | |
716 | scm_cons (scm_str2symbol ("nfields"), | |
717 | scm_cons (scm_str2symbol ("environment"), | |
80662eda MD |
718 | SCM_EOL)))))))))))))))))))))))))))); |
719 | } | |
720 | ||
721 | static void | |
722 | create_basic_classes (void) | |
723 | { | |
724 | /* SCM slots_of_class = build_class_class_slots (); */ | |
725 | ||
726 | /**** <scm_class_class> ****/ | |
727 | SCM cs = scm_makfrom0str (SCM_CLASS_CLASS_LAYOUT | |
728 | + 2 * scm_vtable_offset_user); | |
38ae064c | 729 | SCM name = scm_str2symbol ("<class>"); |
80662eda MD |
730 | scm_class_class = scm_permanent_object (scm_make_vtable_vtable (cs, |
731 | SCM_INUM0, | |
732 | SCM_EOL)); | |
733 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID | |
734 | | SCM_CLASSF_METACLASS)); | |
735 | ||
dcb410ec DH |
736 | SCM_SET_SLOT (scm_class_class, scm_si_name, name); |
737 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ | |
738 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
739 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
740 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); | |
741 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ | |
742 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
743 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, SCM_MAKINUM (SCM_N_CLASS_SLOTS)); | |
744 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
745 | compute_getters_n_setters (slots_of_class)); */ | |
746 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
747 | SCM_SET_SLOT (scm_class_class, scm_si_environment, | |
748 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
749 | |
750 | prep_hashsets (scm_class_class); | |
751 | ||
752 | DEFVAR(name, scm_class_class); | |
753 | ||
754 | /**** <scm_class_top> ****/ | |
38ae064c | 755 | name = scm_str2symbol ("<top>"); |
80662eda MD |
756 | scm_class_top = scm_permanent_object (scm_basic_make_class (scm_class_class, |
757 | name, | |
758 | SCM_EOL, | |
759 | SCM_EOL)); | |
760 | ||
761 | DEFVAR(name, scm_class_top); | |
762 | ||
763 | /**** <scm_class_object> ****/ | |
38ae064c | 764 | name = scm_str2symbol ("<object>"); |
80662eda MD |
765 | scm_class_object = scm_permanent_object (scm_basic_make_class (scm_class_class, |
766 | name, | |
1afff620 | 767 | scm_list_1 (scm_class_top), |
80662eda MD |
768 | SCM_EOL)); |
769 | ||
770 | DEFVAR (name, scm_class_object); | |
771 | ||
772 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 773 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 774 | |
1afff620 KN |
775 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
776 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
777 | } |
778 | ||
779 | /******************************************************************************/ | |
780 | ||
398d8ee1 KN |
781 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
782 | (SCM obj), | |
6bcefd15 | 783 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 784 | #define FUNC_NAME s_scm_instance_p |
80662eda | 785 | { |
c312aca7 | 786 | return SCM_BOOL (SCM_INSTANCEP (obj)); |
80662eda | 787 | } |
398d8ee1 | 788 | #undef FUNC_NAME |
80662eda | 789 | |
80662eda MD |
790 | |
791 | /****************************************************************************** | |
792 | * | |
793 | * Meta object accessors | |
794 | * | |
795 | ******************************************************************************/ | |
398d8ee1 KN |
796 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
797 | (SCM obj), | |
6bcefd15 | 798 | "Return the class name of @var{obj}.") |
398d8ee1 | 799 | #define FUNC_NAME s_scm_class_name |
80662eda | 800 | { |
398d8ee1 | 801 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 802 | return scm_slot_ref (obj, scm_str2symbol ("name")); |
80662eda | 803 | } |
398d8ee1 | 804 | #undef FUNC_NAME |
80662eda | 805 | |
398d8ee1 KN |
806 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
807 | (SCM obj), | |
6bcefd15 | 808 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 809 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 810 | { |
398d8ee1 | 811 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 812 | return scm_slot_ref (obj, scm_str2symbol ("direct-supers")); |
80662eda | 813 | } |
398d8ee1 | 814 | #undef FUNC_NAME |
80662eda | 815 | |
398d8ee1 KN |
816 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
817 | (SCM obj), | |
6bcefd15 | 818 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 819 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 820 | { |
398d8ee1 | 821 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 822 | return scm_slot_ref (obj, scm_str2symbol ("direct-slots")); |
80662eda | 823 | } |
398d8ee1 | 824 | #undef FUNC_NAME |
80662eda | 825 | |
398d8ee1 KN |
826 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
827 | (SCM obj), | |
6bcefd15 | 828 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 829 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 830 | { |
398d8ee1 | 831 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 832 | return scm_slot_ref(obj, scm_str2symbol ("direct-subclasses")); |
80662eda | 833 | } |
398d8ee1 | 834 | #undef FUNC_NAME |
80662eda | 835 | |
398d8ee1 KN |
836 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
837 | (SCM obj), | |
6bcefd15 | 838 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 839 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 840 | { |
398d8ee1 | 841 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 842 | return scm_slot_ref (obj, scm_str2symbol ("direct-methods")); |
80662eda | 843 | } |
398d8ee1 | 844 | #undef FUNC_NAME |
80662eda | 845 | |
398d8ee1 KN |
846 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
847 | (SCM obj), | |
6bcefd15 | 848 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 849 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 850 | { |
398d8ee1 | 851 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 852 | return scm_slot_ref (obj, scm_str2symbol ("cpl")); |
80662eda | 853 | } |
398d8ee1 | 854 | #undef FUNC_NAME |
80662eda | 855 | |
398d8ee1 KN |
856 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
857 | (SCM obj), | |
6bcefd15 | 858 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 859 | #define FUNC_NAME s_scm_class_slots |
80662eda | 860 | { |
398d8ee1 | 861 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 862 | return scm_slot_ref (obj, scm_str2symbol ("slots")); |
80662eda | 863 | } |
398d8ee1 | 864 | #undef FUNC_NAME |
80662eda | 865 | |
398d8ee1 KN |
866 | SCM_DEFINE (scm_class_environment, "class-environment", 1, 0, 0, |
867 | (SCM obj), | |
6bcefd15 | 868 | "Return the environment of the class @var{obj}.") |
398d8ee1 | 869 | #define FUNC_NAME s_scm_class_environment |
80662eda | 870 | { |
398d8ee1 | 871 | SCM_VALIDATE_CLASS (1, obj); |
38ae064c | 872 | return scm_slot_ref(obj, scm_str2symbol ("environment")); |
80662eda | 873 | } |
398d8ee1 | 874 | #undef FUNC_NAME |
80662eda MD |
875 | |
876 | ||
398d8ee1 KN |
877 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
878 | (SCM obj), | |
6bcefd15 | 879 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 880 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 881 | { |
398d8ee1 | 882 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
883 | return scm_procedure_property (obj, scm_sym_name); |
884 | } | |
398d8ee1 | 885 | #undef FUNC_NAME |
80662eda | 886 | |
398d8ee1 KN |
887 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
888 | (SCM obj), | |
6bcefd15 | 889 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 890 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 891 | { |
398d8ee1 | 892 | SCM_VALIDATE_GENERIC (1, obj); |
38ae064c | 893 | return scm_slot_ref (obj, scm_str2symbol ("methods")); |
80662eda | 894 | } |
398d8ee1 | 895 | #undef FUNC_NAME |
80662eda MD |
896 | |
897 | ||
398d8ee1 KN |
898 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
899 | (SCM obj), | |
6bcefd15 | 900 | "Return the generic function fot the method @var{obj}.") |
398d8ee1 | 901 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 902 | { |
398d8ee1 | 903 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 904 | return scm_slot_ref (obj, scm_str2symbol ("generic-function")); |
80662eda | 905 | } |
398d8ee1 | 906 | #undef FUNC_NAME |
80662eda | 907 | |
398d8ee1 KN |
908 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
909 | (SCM obj), | |
6bcefd15 | 910 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 911 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 912 | { |
398d8ee1 | 913 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 914 | return scm_slot_ref (obj, scm_str2symbol ("specializers")); |
80662eda | 915 | } |
398d8ee1 | 916 | #undef FUNC_NAME |
80662eda | 917 | |
398d8ee1 KN |
918 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
919 | (SCM obj), | |
6bcefd15 | 920 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 921 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 922 | { |
398d8ee1 | 923 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 924 | return scm_slot_ref (obj, scm_str2symbol ("procedure")); |
80662eda | 925 | } |
398d8ee1 | 926 | #undef FUNC_NAME |
80662eda | 927 | |
398d8ee1 KN |
928 | SCM_DEFINE (scm_accessor_method_slot_definition, "accessor-method-slot-definition", 1, 0, 0, |
929 | (SCM obj), | |
6bcefd15 | 930 | "Return the slot definition of the accessor @var{obj}.") |
398d8ee1 | 931 | #define FUNC_NAME s_scm_accessor_method_slot_definition |
80662eda | 932 | { |
398d8ee1 | 933 | SCM_VALIDATE_ACCESSOR (1, obj); |
38ae064c | 934 | return scm_slot_ref (obj, scm_str2symbol ("slot-definition")); |
398d8ee1 KN |
935 | } |
936 | #undef FUNC_NAME | |
80662eda | 937 | |
5e03762c MD |
938 | SCM_DEFINE (scm_sys_tag_body, "%tag-body", 1, 0, 0, |
939 | (SCM body), | |
87e7741d | 940 | "Internal GOOPS magic---don't use this function!") |
5e03762c MD |
941 | #define FUNC_NAME s_scm_sys_tag_body |
942 | { | |
943 | return scm_cons (SCM_IM_LAMBDA, body); | |
87e7741d MD |
944 | } |
945 | #undef FUNC_NAME | |
80662eda MD |
946 | |
947 | /****************************************************************************** | |
948 | * | |
949 | * S l o t a c c e s s | |
950 | * | |
951 | ******************************************************************************/ | |
952 | ||
398d8ee1 KN |
953 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
954 | (), | |
6bcefd15 | 955 | "Return the unbound value.") |
398d8ee1 | 956 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
957 | { |
958 | return SCM_GOOPS_UNBOUND; | |
959 | } | |
398d8ee1 | 960 | #undef FUNC_NAME |
80662eda | 961 | |
398d8ee1 KN |
962 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
963 | (SCM obj), | |
6bcefd15 | 964 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 965 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
966 | { |
967 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
968 | } | |
398d8ee1 | 969 | #undef FUNC_NAME |
80662eda | 970 | |
398d8ee1 KN |
971 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
972 | (SCM value, SCM obj), | |
6bcefd15 MG |
973 | "Return @var{value} if it is bound, and invoke the\n" |
974 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 975 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
976 | { |
977 | if (SCM_GOOPS_UNBOUNDP (value)) | |
978 | return CALL_GF1 ("slot-unbound", obj); | |
979 | return value; | |
980 | } | |
398d8ee1 | 981 | #undef FUNC_NAME |
80662eda | 982 | |
398d8ee1 KN |
983 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
984 | (SCM obj, SCM index), | |
6bcefd15 MG |
985 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
986 | "the value from @var{obj}.") | |
398d8ee1 | 987 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda MD |
988 | { |
989 | SCM value = SCM_SLOT (obj, SCM_INUM (index)); | |
990 | if (SCM_GOOPS_UNBOUNDP (value)) | |
991 | return CALL_GF1 ("slot-unbound", obj); | |
992 | return value; | |
993 | } | |
398d8ee1 | 994 | #undef FUNC_NAME |
80662eda | 995 | |
398d8ee1 KN |
996 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
997 | (SCM obj, SCM index), | |
6bcefd15 | 998 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 999 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1000 | { |
c014a02e | 1001 | register long i; |
80662eda | 1002 | |
398d8ee1 KN |
1003 | SCM_VALIDATE_INSTANCE (1, obj); |
1004 | SCM_VALIDATE_INUM (2, index); | |
80662eda | 1005 | i = SCM_INUM (index); |
ca83b028 DH |
1006 | |
1007 | SCM_ASSERT_RANGE (2, index, i >= 0 && i < SCM_NUMBER_OF_SLOTS (obj)); | |
80662eda MD |
1008 | return scm_at_assert_bound_ref (obj, index); |
1009 | } | |
ca83b028 DH |
1010 | #undef FUNC_NAME |
1011 | ||
398d8ee1 KN |
1012 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1013 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1014 | "Set the slot with index @var{index} in @var{obj} to\n" |
1015 | "@var{value}.") | |
398d8ee1 | 1016 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1017 | { |
c014a02e | 1018 | register long i; |
80662eda | 1019 | |
398d8ee1 KN |
1020 | SCM_VALIDATE_INSTANCE (1, obj); |
1021 | SCM_VALIDATE_INUM (2, index); | |
80662eda | 1022 | i = SCM_INUM (index); |
ca83b028 | 1023 | SCM_ASSERT_RANGE (2, index, i >= 0 && i < SCM_NUMBER_OF_SLOTS (obj)); |
dcb410ec | 1024 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1025 | |
80662eda MD |
1026 | return SCM_UNSPECIFIED; |
1027 | } | |
ca83b028 DH |
1028 | #undef FUNC_NAME |
1029 | ||
80662eda MD |
1030 | |
1031 | /** Utilities **/ | |
1032 | ||
1033 | /* In the future, this function will return the effective slot | |
1034 | * definition associated with SLOT_NAME. Now it just returns some of | |
1035 | * the information which will be stored in the effective slot | |
1036 | * definition. | |
1037 | */ | |
1038 | ||
1039 | static SCM | |
1040 | slot_definition_using_name (SCM class, SCM slot_name) | |
1041 | { | |
1042 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
1043 | for (; SCM_NIMP (slots); slots = SCM_CDR (slots)) | |
1044 | if (SCM_CAAR (slots) == slot_name) | |
1045 | return SCM_CAR (slots); | |
1046 | return SCM_BOOL_F; | |
1047 | } | |
1048 | ||
1049 | static SCM | |
e81d98ec | 1050 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
80662eda MD |
1051 | { |
1052 | SCM access = SCM_CDDR (slotdef); | |
1053 | /* Two cases here: | |
1054 | * - access is an integer (the offset of this slot in the slots vector) | |
1055 | * - otherwise (car access) is the getter function to apply | |
23437298 | 1056 | */ |
80662eda MD |
1057 | if (SCM_INUMP (access)) |
1058 | return SCM_SLOT (obj, SCM_INUM (access)); | |
1059 | else | |
1060 | { | |
1061 | /* We must evaluate (apply (car access) (list obj)) | |
1062 | * where (car access) is known to be a closure of arity 1 */ | |
1063 | register SCM code, env; | |
1064 | ||
1065 | code = SCM_CAR (access); | |
1066 | if (!SCM_CLOSUREP (code)) | |
1067 | return SCM_SUBRF (code) (obj); | |
726d810a | 1068 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1069 | scm_list_1 (obj), |
80662eda MD |
1070 | SCM_ENV (code)); |
1071 | /* Evaluate the closure body */ | |
1072 | return scm_eval_body (SCM_CDR (SCM_CODE (code)), env); | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | static SCM | |
1077 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1078 | { | |
1079 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
1080 | if (SCM_NFALSEP (slotdef)) | |
1081 | return get_slot_value (class, obj, slotdef); | |
1082 | else | |
1083 | return CALL_GF3 ("slot-missing", class, obj, slot_name); | |
1084 | } | |
1085 | ||
1086 | static SCM | |
e81d98ec | 1087 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
80662eda MD |
1088 | { |
1089 | SCM access = SCM_CDDR (slotdef); | |
1090 | /* Two cases here: | |
1091 | * - access is an integer (the offset of this slot in the slots vector) | |
1092 | * - otherwise (cadr access) is the setter function to apply | |
1093 | */ | |
1094 | if (SCM_INUMP (access)) | |
dcb410ec | 1095 | SCM_SET_SLOT (obj, SCM_INUM (access), value); |
80662eda MD |
1096 | else |
1097 | { | |
1098 | /* We must evaluate (apply (cadr l) (list obj value)) | |
1099 | * where (cadr l) is known to be a closure of arity 2 */ | |
1100 | register SCM code, env; | |
1101 | ||
1102 | code = SCM_CADR (access); | |
1103 | if (!SCM_CLOSUREP (code)) | |
1104 | SCM_SUBRF (code) (obj, value); | |
1105 | else | |
1106 | { | |
726d810a | 1107 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1108 | scm_list_2 (obj, value), |
80662eda MD |
1109 | SCM_ENV (code)); |
1110 | /* Evaluate the closure body */ | |
1111 | scm_eval_body (SCM_CDR (SCM_CODE (code)), env); | |
1112 | } | |
1113 | } | |
1114 | return SCM_UNSPECIFIED; | |
1115 | } | |
1116 | ||
1117 | static SCM | |
1118 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1119 | { | |
1120 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
1121 | if (SCM_NFALSEP (slotdef)) | |
1122 | return set_slot_value (class, obj, slotdef, value); | |
1123 | else | |
1124 | return CALL_GF4 ("slot-missing", class, obj, slot_name, value); | |
1125 | } | |
1126 | ||
1127 | static SCM | |
e81d98ec | 1128 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1129 | { |
1130 | register SCM l; | |
1131 | ||
729dbac3 DH |
1132 | for (l = SCM_ACCESSORS_OF (obj); !SCM_NULLP (l); l = SCM_CDR (l)) |
1133 | if (SCM_EQ_P (SCM_CAAR (l), slot_name)) | |
80662eda MD |
1134 | return SCM_BOOL_T; |
1135 | ||
1136 | return SCM_BOOL_F; | |
1137 | } | |
1138 | ||
80662eda MD |
1139 | /* ======================================== */ |
1140 | ||
23437298 DH |
1141 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1142 | (SCM class, SCM obj, SCM slot_name), | |
1143 | "") | |
1144 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1145 | { |
1146 | SCM res; | |
1147 | ||
398d8ee1 KN |
1148 | SCM_VALIDATE_CLASS (1, class); |
1149 | SCM_VALIDATE_INSTANCE (2, obj); | |
1150 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1151 | |
1152 | res = get_slot_value_using_name (class, obj, slot_name); | |
1153 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1154 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1155 | return res; | |
1156 | } | |
23437298 | 1157 | #undef FUNC_NAME |
80662eda | 1158 | |
23437298 DH |
1159 | |
1160 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1161 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1162 | "") | |
1163 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1164 | { |
398d8ee1 KN |
1165 | SCM_VALIDATE_CLASS (1, class); |
1166 | SCM_VALIDATE_INSTANCE (2, obj); | |
1167 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1168 | |
80662eda MD |
1169 | return set_slot_value_using_name (class, obj, slot_name, value); |
1170 | } | |
23437298 DH |
1171 | #undef FUNC_NAME |
1172 | ||
80662eda | 1173 | |
398d8ee1 KN |
1174 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1175 | (SCM class, SCM obj, SCM slot_name), | |
1176 | "") | |
1177 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1178 | { |
398d8ee1 KN |
1179 | SCM_VALIDATE_CLASS (1, class); |
1180 | SCM_VALIDATE_INSTANCE (2, obj); | |
1181 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1182 | |
1183 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1184 | ? SCM_BOOL_F | |
1185 | : SCM_BOOL_T); | |
1186 | } | |
398d8ee1 | 1187 | #undef FUNC_NAME |
80662eda | 1188 | |
398d8ee1 KN |
1189 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1190 | (SCM class, SCM obj, SCM slot_name), | |
1191 | "") | |
1192 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1193 | { | |
1194 | SCM_VALIDATE_CLASS (1, class); | |
1195 | SCM_VALIDATE_INSTANCE (2, obj); | |
1196 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1197 | return test_slot_existence (class, obj, slot_name); |
1198 | } | |
398d8ee1 | 1199 | #undef FUNC_NAME |
80662eda MD |
1200 | |
1201 | ||
1202 | /* ======================================== */ | |
1203 | ||
398d8ee1 KN |
1204 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1205 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1206 | "Return the value from @var{obj}'s slot with the name\n" |
1207 | "@var{slot_name}.") | |
398d8ee1 | 1208 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1209 | { |
1210 | SCM res, class; | |
1211 | ||
398d8ee1 | 1212 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1213 | TEST_CHANGE_CLASS (obj, class); |
1214 | ||
1215 | res = get_slot_value_using_name (class, obj, slot_name); | |
1216 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1217 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1218 | return res; | |
1219 | } | |
398d8ee1 | 1220 | #undef FUNC_NAME |
80662eda | 1221 | |
398d8ee1 KN |
1222 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1223 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1224 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1225 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1226 | { |
1227 | SCM class; | |
1228 | ||
398d8ee1 | 1229 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1230 | TEST_CHANGE_CLASS(obj, class); |
1231 | ||
1232 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1233 | } | |
398d8ee1 | 1234 | #undef FUNC_NAME |
80662eda | 1235 | |
398d8ee1 | 1236 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1237 | |
398d8ee1 KN |
1238 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1239 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1240 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1241 | "is bound.") | |
398d8ee1 | 1242 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1243 | { |
1244 | SCM class; | |
1245 | ||
398d8ee1 | 1246 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1247 | TEST_CHANGE_CLASS(obj, class); |
1248 | ||
1249 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1250 | obj, | |
1251 | slot_name)) | |
1252 | ? SCM_BOOL_F | |
1253 | : SCM_BOOL_T); | |
1254 | } | |
398d8ee1 | 1255 | #undef FUNC_NAME |
80662eda | 1256 | |
398d8ee1 KN |
1257 | SCM_DEFINE (scm_slots_exists_p, "slot-exists?", 2, 0, 0, |
1258 | (SCM obj, SCM slot_name), | |
6bcefd15 | 1259 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
398d8ee1 | 1260 | #define FUNC_NAME s_scm_slots_exists_p |
80662eda MD |
1261 | { |
1262 | SCM class; | |
1263 | ||
398d8ee1 KN |
1264 | SCM_VALIDATE_INSTANCE (1, obj); |
1265 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1266 | TEST_CHANGE_CLASS (obj, class); |
1267 | ||
1268 | return test_slot_existence (class, obj, slot_name); | |
1269 | } | |
398d8ee1 | 1270 | #undef FUNC_NAME |
80662eda MD |
1271 | |
1272 | ||
1273 | /****************************************************************************** | |
1274 | * | |
1275 | * %allocate-instance (the low level instance allocation primitive) | |
1276 | * | |
1277 | ******************************************************************************/ | |
1278 | ||
1279 | static void clear_method_cache (SCM); | |
1280 | ||
1281 | static SCM | |
c014a02e | 1282 | wrap_init (SCM class, SCM *m, long n) |
80662eda MD |
1283 | { |
1284 | SCM z; | |
c014a02e | 1285 | long i; |
80662eda MD |
1286 | |
1287 | /* Set all slots to unbound */ | |
1288 | for (i = 0; i < n; i++) | |
1289 | m[i] = SCM_GOOPS_UNBOUND; | |
1290 | ||
1291 | SCM_NEWCELL2 (z); | |
80662eda | 1292 | SCM_SET_STRUCT_GC_CHAIN (z, 0); |
729dbac3 | 1293 | SCM_SET_CELL_WORD_1 (z, m); |
92c2555f | 1294 | SCM_SET_CELL_WORD_0 (z, (scm_t_bits) SCM_STRUCT_DATA (class) |
729dbac3 | 1295 | | scm_tc3_cons_gloc); |
80662eda MD |
1296 | |
1297 | return z; | |
1298 | } | |
1299 | ||
398d8ee1 KN |
1300 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1301 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1302 | "Create a new instance of class @var{class} and initialize it\n" |
1303 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1304 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda MD |
1305 | { |
1306 | SCM *m; | |
c014a02e | 1307 | long n; |
80662eda | 1308 | |
398d8ee1 | 1309 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1310 | |
1311 | /* Most instances */ | |
1312 | if (SCM_CLASS_FLAGS (class) & SCM_STRUCTF_LIGHT) | |
1313 | { | |
1314 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
1315 | m = (SCM *) scm_must_malloc (n * sizeof (SCM), "instance"); | |
1316 | return wrap_init (class, m, n); | |
1317 | } | |
1318 | ||
1319 | /* Foreign objects */ | |
1320 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_FOREIGN) | |
1321 | return scm_make_foreign_object (class, initargs); | |
1322 | ||
1323 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
1324 | ||
1325 | /* Entities */ | |
1326 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_ENTITY) | |
1327 | { | |
1328 | m = (SCM *) scm_alloc_struct (n, | |
1329 | scm_struct_entity_n_extra_words, | |
1330 | "entity"); | |
1331 | m[scm_struct_i_setter] = SCM_BOOL_F; | |
1332 | m[scm_struct_i_procedure] = SCM_BOOL_F; | |
1333 | /* Generic functions */ | |
1334 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) | |
1335 | { | |
1336 | SCM gf = wrap_init (class, m, n); | |
1337 | clear_method_cache (gf); | |
1338 | return gf; | |
1339 | } | |
1340 | else | |
1341 | return wrap_init (class, m, n); | |
1342 | } | |
1343 | ||
1344 | /* Class objects */ | |
1345 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_METACLASS) | |
1346 | { | |
c014a02e | 1347 | long i; |
80662eda MD |
1348 | |
1349 | /* allocate class object */ | |
1350 | SCM z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
1351 | ||
dcb410ec | 1352 | SCM_SET_SLOT (z, scm_si_print, SCM_GOOPS_UNBOUND); |
80662eda | 1353 | for (i = scm_si_goops_fields; i < n; i++) |
dcb410ec | 1354 | SCM_SET_SLOT (z, i, SCM_GOOPS_UNBOUND); |
80662eda MD |
1355 | |
1356 | if (SCM_SUBCLASSP (class, scm_class_entity_class)) | |
1357 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY); | |
1358 | else if (SCM_SUBCLASSP (class, scm_class_operator_class)) | |
1359 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR); | |
1360 | ||
1361 | return z; | |
1362 | } | |
1363 | ||
1364 | /* Non-light instances */ | |
1365 | { | |
1366 | m = (SCM *) scm_alloc_struct (n, | |
1367 | scm_struct_n_extra_words, | |
1368 | "heavy instance"); | |
1369 | return wrap_init (class, m, n); | |
1370 | } | |
1371 | } | |
398d8ee1 | 1372 | #undef FUNC_NAME |
80662eda | 1373 | |
398d8ee1 KN |
1374 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1375 | (SCM obj, SCM setter), | |
1376 | "") | |
1377 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1378 | { |
c312aca7 | 1379 | SCM_ASSERT (SCM_STRUCTP (obj) |
80662eda MD |
1380 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
1381 | || SCM_I_ENTITYP (obj)), | |
1382 | obj, | |
1383 | SCM_ARG1, | |
398d8ee1 | 1384 | FUNC_NAME); |
80662eda | 1385 | if (SCM_I_ENTITYP (obj)) |
322ec19d | 1386 | SCM_SET_ENTITY_SETTER (obj, setter); |
80662eda MD |
1387 | else |
1388 | SCM_OPERATOR_CLASS (obj)->setter = setter; | |
1389 | return SCM_UNSPECIFIED; | |
1390 | } | |
398d8ee1 | 1391 | #undef FUNC_NAME |
80662eda MD |
1392 | |
1393 | /****************************************************************************** | |
1394 | * | |
1395 | * %modify-instance (used by change-class to modify in place) | |
1396 | * | |
1397 | ******************************************************************************/ | |
1398 | ||
398d8ee1 KN |
1399 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1400 | (SCM old, SCM new), | |
1401 | "") | |
1402 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1403 | { |
398d8ee1 KN |
1404 | SCM_VALIDATE_INSTANCE (1, old); |
1405 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda MD |
1406 | |
1407 | /* Exchange the data contained in old and new. We exchange rather than | |
1408 | * scratch the old value with new to be correct with GC. | |
1409 | * See "Class redefinition protocol above". | |
1410 | */ | |
1411 | SCM_REDEFER_INTS; | |
1412 | { | |
1413 | SCM car = SCM_CAR (old); | |
1414 | SCM cdr = SCM_CDR (old); | |
1415 | SCM_SETCAR (old, SCM_CAR (new)); | |
1416 | SCM_SETCDR (old, SCM_CDR (new)); | |
1417 | SCM_SETCAR (new, car); | |
1418 | SCM_SETCDR (new, cdr); | |
1419 | } | |
1420 | SCM_REALLOW_INTS; | |
1421 | return SCM_UNSPECIFIED; | |
1422 | } | |
398d8ee1 | 1423 | #undef FUNC_NAME |
80662eda | 1424 | |
398d8ee1 KN |
1425 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1426 | (SCM old, SCM new), | |
1427 | "") | |
1428 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1429 | { |
398d8ee1 KN |
1430 | SCM_VALIDATE_CLASS (1, old); |
1431 | SCM_VALIDATE_CLASS (2, new); | |
80662eda MD |
1432 | |
1433 | SCM_REDEFER_INTS; | |
1434 | { | |
1435 | SCM car = SCM_CAR (old); | |
1436 | SCM cdr = SCM_CDR (old); | |
1437 | SCM_SETCAR (old, SCM_CAR (new)); | |
1438 | SCM_SETCDR (old, SCM_CDR (new)); | |
729dbac3 | 1439 | SCM_STRUCT_DATA (old)[scm_vtable_index_vtable] = SCM_UNPACK (old); |
80662eda MD |
1440 | SCM_SETCAR (new, car); |
1441 | SCM_SETCDR (new, cdr); | |
729dbac3 | 1442 | SCM_STRUCT_DATA (new)[scm_vtable_index_vtable] = SCM_UNPACK (new); |
80662eda MD |
1443 | } |
1444 | SCM_REALLOW_INTS; | |
1445 | return SCM_UNSPECIFIED; | |
1446 | } | |
398d8ee1 | 1447 | #undef FUNC_NAME |
80662eda | 1448 | |
398d8ee1 KN |
1449 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1450 | (SCM class), | |
1451 | "") | |
1452 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1453 | { |
398d8ee1 | 1454 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1455 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1456 | return SCM_UNSPECIFIED; | |
1457 | } | |
398d8ee1 | 1458 | #undef FUNC_NAME |
80662eda MD |
1459 | |
1460 | /* When instances change class, they finally get a new body, but | |
1461 | * before that, they go through purgatory in hell. Odd as it may | |
1462 | * seem, this data structure saves us from eternal suffering in | |
1463 | * infinite recursions. | |
1464 | */ | |
1465 | ||
92c2555f | 1466 | static scm_t_bits **hell; |
c014a02e ML |
1467 | static long n_hell = 1; /* one place for the evil one himself */ |
1468 | static long hell_size = 4; | |
80662eda | 1469 | #ifdef USE_THREADS |
92c2555f | 1470 | static scm_t_mutex hell_mutex; |
80662eda MD |
1471 | #endif |
1472 | ||
c014a02e | 1473 | static long |
80662eda MD |
1474 | burnin (SCM o) |
1475 | { | |
c014a02e | 1476 | long i; |
80662eda MD |
1477 | for (i = 1; i < n_hell; ++i) |
1478 | if (SCM_INST (o) == hell[i]) | |
1479 | return i; | |
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | static void | |
1484 | go_to_hell (void *o) | |
1485 | { | |
1486 | SCM obj = (SCM) o; | |
1487 | #ifdef USE_THREADS | |
1488 | scm_mutex_lock (&hell_mutex); | |
1489 | #endif | |
1490 | if (n_hell == hell_size) | |
1491 | { | |
c014a02e | 1492 | long new_size = 2 * hell_size; |
80662eda MD |
1493 | hell = scm_must_realloc (hell, hell_size, new_size, "hell"); |
1494 | hell_size = new_size; | |
1495 | } | |
1496 | hell[n_hell++] = SCM_INST (obj); | |
1497 | #ifdef USE_THREADS | |
1498 | scm_mutex_unlock (&hell_mutex); | |
1499 | #endif | |
1500 | } | |
1501 | ||
1502 | static void | |
1503 | go_to_heaven (void *o) | |
1504 | { | |
1505 | #ifdef USE_THREADS | |
1506 | scm_mutex_lock (&hell_mutex); | |
1507 | #endif | |
1508 | hell[burnin ((SCM) o)] = hell[--n_hell]; | |
1509 | #ifdef USE_THREADS | |
1510 | scm_mutex_unlock (&hell_mutex); | |
1511 | #endif | |
1512 | } | |
1513 | ||
1514 | static SCM | |
1515 | purgatory (void *args) | |
1516 | { | |
fdc28395 | 1517 | return scm_apply_0 (GETVAR (scm_str2symbol ("change-class")), (SCM) args); |
80662eda MD |
1518 | } |
1519 | ||
1520 | void | |
e81d98ec | 1521 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1522 | { |
1523 | if (!burnin (obj)) | |
1524 | scm_internal_dynamic_wind (go_to_hell, purgatory, go_to_heaven, | |
1afff620 | 1525 | (void *) scm_list_2 (obj, new_class), |
80662eda MD |
1526 | (void *) obj); |
1527 | } | |
1528 | ||
1529 | /****************************************************************************** | |
1530 | * | |
1531 | * GGGG FFFFF | |
1532 | * G F | |
1533 | * G GG FFF | |
1534 | * G G F | |
1535 | * GGG E N E R I C F U N C T I O N S | |
1536 | * | |
1537 | * This implementation provides | |
1538 | * - generic functions (with class specializers) | |
1539 | * - multi-methods | |
1540 | * - next-method | |
1541 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf | |
1542 | * | |
1543 | ******************************************************************************/ | |
1544 | ||
1545 | SCM_KEYWORD (k_name, "name"); | |
1546 | ||
1547 | SCM_SYMBOL (sym_no_method, "no-method"); | |
1548 | ||
1549 | static SCM list_of_no_method; | |
1550 | ||
1551 | SCM_SYMBOL (scm_sym_args, "args"); | |
1552 | ||
1553 | SCM | |
1554 | scm_make_method_cache (SCM gf) | |
1555 | { | |
1afff620 KN |
1556 | return scm_list_5 (SCM_IM_DISPATCH, |
1557 | scm_sym_args, | |
1558 | SCM_MAKINUM (1), | |
1559 | scm_c_make_vector (SCM_INITIAL_MCACHE_SIZE, | |
1560 | list_of_no_method), | |
1561 | gf); | |
80662eda MD |
1562 | } |
1563 | ||
1564 | static void | |
1565 | clear_method_cache (SCM gf) | |
1566 | { | |
322ec19d ML |
1567 | SCM cache = scm_make_method_cache (gf); |
1568 | SCM_SET_ENTITY_PROCEDURE (gf, cache); | |
dcb410ec | 1569 | SCM_SET_SLOT (gf, scm_si_used_by, SCM_BOOL_F); |
80662eda MD |
1570 | } |
1571 | ||
398d8ee1 KN |
1572 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1573 | (SCM gf), | |
1574 | "") | |
1575 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda MD |
1576 | { |
1577 | SCM used_by; | |
25ba37df | 1578 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
80662eda MD |
1579 | used_by = SCM_SLOT (gf, scm_si_used_by); |
1580 | if (SCM_NFALSEP (used_by)) | |
1581 | { | |
1582 | SCM methods = SCM_SLOT (gf, scm_si_methods); | |
c312aca7 | 1583 | for (; SCM_CONSP (used_by); used_by = SCM_CDR (used_by)) |
80662eda MD |
1584 | scm_sys_invalidate_method_cache_x (SCM_CAR (used_by)); |
1585 | clear_method_cache (gf); | |
c312aca7 | 1586 | for (; SCM_CONSP (methods); methods = SCM_CDR (methods)) |
dcb410ec | 1587 | SCM_SET_SLOT (SCM_CAR (methods), scm_si_code_table, SCM_EOL); |
80662eda MD |
1588 | } |
1589 | { | |
55c4a132 | 1590 | SCM n = SCM_SLOT (gf, scm_si_n_specialized); |
80662eda | 1591 | /* The sign of n is a flag indicating rest args. */ |
55c4a132 | 1592 | SCM_SET_MCACHE_N_SPECIALIZED (SCM_ENTITY_PROCEDURE (gf), n); |
80662eda MD |
1593 | } |
1594 | return SCM_UNSPECIFIED; | |
1595 | } | |
398d8ee1 | 1596 | #undef FUNC_NAME |
80662eda | 1597 | |
398d8ee1 KN |
1598 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1599 | (SCM proc), | |
1600 | "") | |
1601 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda MD |
1602 | { |
1603 | SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (proc)), | |
398d8ee1 | 1604 | proc, SCM_ARG1, FUNC_NAME); |
80662eda MD |
1605 | return (scm_subr_p (proc) && SCM_SUBR_GENERIC (proc) |
1606 | ? SCM_BOOL_T | |
1607 | : SCM_BOOL_F); | |
1608 | } | |
398d8ee1 | 1609 | #undef FUNC_NAME |
80662eda | 1610 | |
398d8ee1 KN |
1611 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1612 | (SCM subrs), | |
1613 | "") | |
1614 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda MD |
1615 | { |
1616 | while (SCM_NIMP (subrs)) | |
1617 | { | |
1618 | SCM subr = SCM_CAR (subrs); | |
1619 | SCM_ASSERT (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr), | |
398d8ee1 | 1620 | subr, SCM_ARGn, FUNC_NAME); |
80662eda | 1621 | *SCM_SUBR_GENERIC (subr) |
1afff620 KN |
1622 | = scm_make (scm_list_3 (scm_class_generic, |
1623 | k_name, | |
1624 | SCM_SNAME (subr))); | |
80662eda MD |
1625 | subrs = SCM_CDR (subrs); |
1626 | } | |
1627 | return SCM_UNSPECIFIED; | |
1628 | } | |
398d8ee1 | 1629 | #undef FUNC_NAME |
80662eda | 1630 | |
398d8ee1 KN |
1631 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1632 | (SCM subr), | |
1633 | "") | |
1634 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda MD |
1635 | { |
1636 | if (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr)) | |
1637 | { | |
1638 | SCM gf = *SCM_SUBR_GENERIC (subr); | |
1639 | if (gf) | |
1640 | return gf; | |
1641 | } | |
db4b4ca6 | 1642 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1643 | } |
398d8ee1 | 1644 | #undef FUNC_NAME |
80662eda MD |
1645 | |
1646 | /****************************************************************************** | |
1647 | * | |
1648 | * Protocol for calling a generic fumction | |
1649 | * This protocol is roughly equivalent to (parameter are a little bit different | |
1650 | * for efficiency reasons): | |
1651 | * | |
1652 | * + apply-generic (gf args) | |
1653 | * + compute-applicable-methods (gf args ...) | |
1654 | * + sort-applicable-methods (methods args) | |
1655 | * + apply-methods (gf methods args) | |
1656 | * | |
1657 | * apply-methods calls make-next-method to build the "continuation" of a a | |
1658 | * method. Applying a next-method will call apply-next-method which in | |
1659 | * turn will call apply again to call effectively the following method. | |
1660 | * | |
1661 | ******************************************************************************/ | |
1662 | ||
1663 | static int | |
1664 | applicablep (SCM actual, SCM formal) | |
1665 | { | |
79a3dafe DH |
1666 | /* We already know that the cpl is well formed. */ |
1667 | return !SCM_FALSEP (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); | |
80662eda MD |
1668 | } |
1669 | ||
1670 | static int | |
1671 | more_specificp (SCM m1, SCM m2, SCM *targs) | |
1672 | { | |
1673 | register SCM s1, s2; | |
c014a02e | 1674 | register long i; |
80662eda MD |
1675 | /* |
1676 | * Note: | |
1677 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
1678 | * other when we have a dotted parameter list). For instance, with the call | |
1679 | * (M 1) | |
1680 | * with | |
1681 | * (define-method M (a . l) ....) | |
1682 | * (define-method M (a) ....) | |
1683 | * | |
1684 | * we consider that the second method is more specific. | |
1685 | * | |
1686 | * BTW, targs is an array of types. We don't need it's size since | |
1687 | * we already know that m1 and m2 are applicable (no risk to go past | |
1688 | * the end of this array). | |
1689 | * | |
1690 | */ | |
1691 | for (i=0,s1=SPEC_OF(m1),s2=SPEC_OF(m2); ; i++,s1=SCM_CDR(s1),s2=SCM_CDR(s2)) { | |
1692 | if (SCM_NULLP(s1)) return 1; | |
1693 | if (SCM_NULLP(s2)) return 0; | |
1694 | if (SCM_CAR(s1) != SCM_CAR(s2)) { | |
1695 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); | |
1696 | ||
dcb410ec | 1697 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
80662eda MD |
1698 | if (cs1 == SCM_CAR(l)) |
1699 | return 1; | |
1700 | if (cs2 == SCM_CAR(l)) | |
1701 | return 0; | |
1702 | } | |
1703 | return 0;/* should not occur! */ | |
1704 | } | |
1705 | } | |
1706 | return 0; /* should not occur! */ | |
1707 | } | |
1708 | ||
1709 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1710 | ||
1711 | static SCM | |
c014a02e | 1712 | scm_i_vector2list (SCM l, long len) |
80662eda | 1713 | { |
c014a02e | 1714 | long j; |
00ffa0e7 | 1715 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
80662eda MD |
1716 | |
1717 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { | |
1718 | SCM_VELTS (z)[j] = SCM_CAR (l); | |
1719 | } | |
1720 | return z; | |
1721 | } | |
1722 | ||
1723 | static SCM | |
c014a02e | 1724 | sort_applicable_methods (SCM method_list, long size, SCM *targs) |
80662eda | 1725 | { |
c014a02e | 1726 | long i, j, incr; |
80662eda MD |
1727 | SCM *v, vector = SCM_EOL; |
1728 | SCM buffer[BUFFSIZE]; | |
1729 | SCM save = method_list; | |
1730 | ||
1731 | /* For reasonably sized method_lists we can try to avoid all the | |
1732 | * consing and reorder the list in place... | |
1733 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1734 | */ | |
1735 | if (size <= BUFFSIZE) | |
1736 | { | |
1737 | for (i = 0; i < size; i++) | |
1738 | { | |
1739 | buffer[i] = SCM_CAR (method_list); | |
1740 | method_list = SCM_CDR (method_list); | |
1741 | } | |
1742 | v = buffer; | |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | /* Too many elements in method_list to keep everything locally */ | |
1747 | vector = scm_i_vector2list (save, size); | |
1748 | v = SCM_VELTS (vector); | |
1749 | } | |
1750 | ||
1751 | /* Use a simple shell sort since it is generally faster than qsort on | |
1752 | * small vectors (which is probably mostly the case when we have to | |
1753 | * sort a list of applicable methods). | |
1754 | */ | |
1755 | for (incr = size / 2; incr; incr /= 2) | |
1756 | { | |
1757 | for (i = incr; i < size; i++) | |
1758 | { | |
1759 | for (j = i - incr; j >= 0; j -= incr) | |
1760 | { | |
1761 | if (more_specificp (v[j], v[j+incr], targs)) | |
1762 | break; | |
1763 | else | |
1764 | { | |
1765 | SCM tmp = v[j + incr]; | |
1766 | v[j + incr] = v[j]; | |
1767 | v[j] = tmp; | |
1768 | } | |
1769 | } | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | if (size <= BUFFSIZE) | |
1774 | { | |
1775 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
1776 | for (i = 0, method_list = save; i < size; i++, v++) | |
1777 | { | |
1778 | SCM_SETCAR (method_list, *v); | |
1779 | method_list = SCM_CDR (method_list); | |
1780 | } | |
1781 | return save; | |
1782 | } | |
1783 | /* If we are here, that's that we did it the hard way... */ | |
1784 | return scm_vector_to_list (vector); | |
1785 | } | |
1786 | ||
1787 | SCM | |
c014a02e | 1788 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 1789 | { |
c014a02e ML |
1790 | register long i; |
1791 | long count = 0; | |
80662eda MD |
1792 | SCM l, fl, applicable = SCM_EOL; |
1793 | SCM save = args; | |
1794 | SCM buffer[BUFFSIZE], *types, *p; | |
1795 | SCM tmp; | |
1796 | ||
1797 | /* Build the list of arguments types */ | |
1798 | if (len >= BUFFSIZE) { | |
00ffa0e7 | 1799 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); |
80662eda MD |
1800 | /* NOTE: Using pointers to malloced memory won't work if we |
1801 | 1. have preemtive threading, and, | |
1802 | 2. have a GC which moves objects. */ | |
1803 | types = p = SCM_VELTS(tmp); | |
1804 | } | |
1805 | else | |
1806 | types = p = buffer; | |
1807 | ||
1808 | for ( ; SCM_NNULLP (args); args = SCM_CDR (args)) | |
1809 | *p++ = scm_class_of (SCM_CAR (args)); | |
1810 | ||
1811 | /* Build a list of all applicable methods */ | |
1812 | for (l = SCM_SLOT (gf, scm_si_methods); SCM_NNULLP (l); l = SCM_CDR (l)) | |
1813 | { | |
1814 | fl = SPEC_OF (SCM_CAR (l)); | |
1815 | /* Only accept accessors which match exactly in first arg. */ | |
1816 | if (SCM_ACCESSORP (SCM_CAR (l)) | |
1817 | && (SCM_IMP (fl) || types[0] != SCM_CAR (fl))) | |
1818 | continue; | |
1819 | for (i = 0; ; i++, fl = SCM_CDR (fl)) | |
1820 | { | |
c312aca7 | 1821 | if (SCM_INSTANCEP (fl) |
80662eda MD |
1822 | /* We have a dotted argument list */ |
1823 | || (i >= len && SCM_NULLP (fl))) | |
1824 | { /* both list exhausted */ | |
1825 | applicable = scm_cons (SCM_CAR (l), applicable); | |
1826 | count += 1; | |
1827 | break; | |
1828 | } | |
1829 | if (i >= len | |
1830 | || SCM_NULLP (fl) | |
1831 | || !applicablep (types[i], SCM_CAR (fl))) | |
1832 | break; | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | if (count == 0) | |
1837 | { | |
1838 | if (find_method_p) | |
1839 | return SCM_BOOL_F; | |
1840 | CALL_GF2 ("no-applicable-method", gf, save); | |
1841 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ | |
1842 | return SCM_BOOL_F; | |
1843 | } | |
1844 | return (count == 1 | |
1845 | ? applicable | |
1846 | : sort_applicable_methods (applicable, count, types)); | |
1847 | } | |
1848 | ||
1849 | #if 0 | |
1850 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
1851 | #endif | |
1852 | ||
1853 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
1854 | ||
1855 | SCM | |
1856 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 1857 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 1858 | { |
c014a02e | 1859 | long n; |
398d8ee1 | 1860 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 1861 | n = scm_ilength (args); |
398d8ee1 | 1862 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
1863 | return scm_compute_applicable_methods (gf, args, n, 1); |
1864 | } | |
398d8ee1 | 1865 | #undef FUNC_NAME |
80662eda | 1866 | |
86d31dfe | 1867 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
9a441ddb | 1868 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, scm_sys_compute_applicable_methods)); |
80662eda MD |
1869 | |
1870 | SCM_SYNTAX (s_atslot_ref, "@slot-ref", scm_makmmacro, scm_m_atslot_ref); | |
1871 | ||
1872 | SCM | |
e81d98ec | 1873 | scm_m_atslot_ref (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 1874 | #define FUNC_NAME s_atslot_ref |
80662eda MD |
1875 | { |
1876 | SCM x = SCM_CDR (xorig); | |
160bb34a | 1877 | SCM_ASSYNT (scm_ilength (x) == 2, scm_s_expression, FUNC_NAME); |
e11208ca | 1878 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
1879 | return scm_cons (SCM_IM_SLOT_REF, x); |
1880 | } | |
e11208ca DH |
1881 | #undef FUNC_NAME |
1882 | ||
80662eda MD |
1883 | |
1884 | SCM_SYNTAX (s_atslot_set_x, "@slot-set!", scm_makmmacro, scm_m_atslot_set_x); | |
1885 | ||
1886 | SCM | |
e81d98ec | 1887 | scm_m_atslot_set_x (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 1888 | #define FUNC_NAME s_atslot_set_x |
80662eda MD |
1889 | { |
1890 | SCM x = SCM_CDR (xorig); | |
160bb34a | 1891 | SCM_ASSYNT (scm_ilength (x) == 3, scm_s_expression, FUNC_NAME); |
e11208ca | 1892 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
1893 | return scm_cons (SCM_IM_SLOT_SET_X, x); |
1894 | } | |
e11208ca DH |
1895 | #undef FUNC_NAME |
1896 | ||
80662eda MD |
1897 | |
1898 | SCM_SYNTAX (s_atdispatch, "@dispatch", scm_makmmacro, scm_m_atdispatch); | |
1899 | ||
1900 | SCM_SYMBOL (sym_atdispatch, s_atdispatch); | |
1901 | ||
1902 | SCM | |
1903 | scm_m_atdispatch (SCM xorig, SCM env) | |
ca83b028 | 1904 | #define FUNC_NAME s_atdispatch |
80662eda MD |
1905 | { |
1906 | SCM args, n, v, gf, x = SCM_CDR (xorig); | |
160bb34a | 1907 | SCM_ASSYNT (scm_ilength (x) == 4, scm_s_expression, FUNC_NAME); |
80662eda | 1908 | args = SCM_CAR (x); |
e11208ca DH |
1909 | if (!SCM_CONSP (args) && !SCM_SYMBOLP (args)) |
1910 | SCM_WRONG_TYPE_ARG (SCM_ARG1, args); | |
80662eda MD |
1911 | x = SCM_CDR (x); |
1912 | n = SCM_XEVALCAR (x, env); | |
e11208ca | 1913 | SCM_VALIDATE_INUM (SCM_ARG2, n); |
ca83b028 | 1914 | SCM_ASSERT_RANGE (0, n, SCM_INUM (n) >= 1); |
80662eda MD |
1915 | x = SCM_CDR (x); |
1916 | v = SCM_XEVALCAR (x, env); | |
e11208ca | 1917 | SCM_VALIDATE_VECTOR (SCM_ARG3, v); |
80662eda MD |
1918 | x = SCM_CDR (x); |
1919 | gf = SCM_XEVALCAR (x, env); | |
e11208ca | 1920 | SCM_VALIDATE_PUREGENERIC (SCM_ARG4, gf); |
1afff620 | 1921 | return scm_list_5 (SCM_IM_DISPATCH, args, n, v, gf); |
80662eda | 1922 | } |
ca83b028 DH |
1923 | #undef FUNC_NAME |
1924 | ||
80662eda MD |
1925 | |
1926 | #ifdef USE_THREADS | |
1927 | static void | |
1928 | lock_cache_mutex (void *m) | |
1929 | { | |
1930 | SCM mutex = (SCM) m; | |
1931 | scm_lock_mutex (mutex); | |
1932 | } | |
1933 | ||
1934 | static void | |
1935 | unlock_cache_mutex (void *m) | |
1936 | { | |
1937 | SCM mutex = (SCM) m; | |
1938 | scm_unlock_mutex (mutex); | |
1939 | } | |
1940 | #endif | |
1941 | ||
1942 | static SCM | |
1943 | call_memoize_method (void *a) | |
1944 | { | |
1945 | SCM args = (SCM) a; | |
1946 | SCM gf = SCM_CAR (args); | |
1947 | SCM x = SCM_CADR (args); | |
1948 | /* First check if another thread has inserted a method between | |
1949 | * the cache miss and locking the mutex. | |
1950 | */ | |
1951 | SCM cmethod = scm_mcache_lookup_cmethod (x, SCM_CDDR (args)); | |
1952 | if (SCM_NIMP (cmethod)) | |
1953 | return cmethod; | |
1954 | /*fixme* Use scm_apply */ | |
1955 | return CALL_GF3 ("memoize-method!", gf, SCM_CDDR (args), x); | |
1956 | } | |
1957 | ||
1958 | SCM | |
1959 | scm_memoize_method (SCM x, SCM args) | |
1960 | { | |
1961 | SCM gf = SCM_CAR (scm_last_pair (x)); | |
1962 | #ifdef USE_THREADS | |
1963 | return scm_internal_dynamic_wind (lock_cache_mutex, | |
1964 | call_memoize_method, | |
1965 | unlock_cache_mutex, | |
1966 | (void *) scm_cons2 (gf, x, args), | |
1967 | (void *) SCM_SLOT (gf, scm_si_cache_mutex)); | |
1968 | #else | |
1969 | return call_memoize_method ((void *) scm_cons2 (gf, x, args)); | |
1970 | #endif | |
1971 | } | |
1972 | ||
1973 | /****************************************************************************** | |
1974 | * | |
1975 | * A simple make (which will be redefined later in Scheme) | |
1976 | * This version handles only creation of gf, methods and classes (no instances) | |
1977 | * | |
1978 | * Since this code will disappear when Goops will be fully booted, | |
1979 | * no precaution is taken to be efficient. | |
1980 | * | |
1981 | ******************************************************************************/ | |
1982 | ||
1983 | SCM_KEYWORD (k_setter, "setter"); | |
1984 | SCM_KEYWORD (k_specializers, "specializers"); | |
1985 | SCM_KEYWORD (k_procedure, "procedure"); | |
1986 | SCM_KEYWORD (k_dsupers, "dsupers"); | |
1987 | SCM_KEYWORD (k_slots, "slots"); | |
1988 | SCM_KEYWORD (k_gf, "generic-function"); | |
1989 | ||
398d8ee1 KN |
1990 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
1991 | (SCM args), | |
27c37006 | 1992 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 1993 | "all necessary initialization information.") |
398d8ee1 | 1994 | #define FUNC_NAME s_scm_make |
80662eda MD |
1995 | { |
1996 | SCM class, z; | |
c014a02e | 1997 | long len = scm_ilength (args); |
80662eda MD |
1998 | |
1999 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2000 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2001 | |
2002 | class = SCM_CAR(args); | |
2003 | args = SCM_CDR(args); | |
2004 | ||
2005 | if (class == scm_class_generic || class == scm_class_generic_with_setter) | |
2006 | { | |
2007 | #ifdef USE_THREADS | |
2008 | z = scm_make_struct (class, SCM_INUM0, | |
1afff620 KN |
2009 | scm_list_4 (SCM_EOL, |
2010 | SCM_INUM0, | |
2011 | SCM_BOOL_F, | |
2012 | scm_make_mutex ())); | |
80662eda MD |
2013 | #else |
2014 | z = scm_make_struct (class, SCM_INUM0, | |
1afff620 | 2015 | scm_list_3 (SCM_EOL, SCM_INUM0, SCM_BOOL_F)); |
80662eda MD |
2016 | #endif |
2017 | scm_set_procedure_property_x (z, scm_sym_name, | |
2018 | scm_get_keyword (k_name, | |
2019 | args, | |
2020 | SCM_BOOL_F)); | |
2021 | clear_method_cache (z); | |
2022 | if (class == scm_class_generic_with_setter) | |
2023 | { | |
2024 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
2025 | if (SCM_NIMP (setter)) | |
2026 | scm_sys_set_object_setter_x (z, setter); | |
2027 | } | |
2028 | } | |
2029 | else | |
2030 | { | |
2031 | z = scm_sys_allocate_instance (class, args); | |
2032 | ||
2033 | if (class == scm_class_method | |
2034 | || class == scm_class_simple_method | |
2035 | || class == scm_class_accessor) | |
2036 | { | |
dcb410ec | 2037 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2038 | scm_i_get_keyword (k_gf, |
2039 | args, | |
2040 | len - 1, | |
2041 | SCM_BOOL_F, | |
dcb410ec DH |
2042 | FUNC_NAME)); |
2043 | SCM_SET_SLOT (z, scm_si_specializers, | |
80662eda MD |
2044 | scm_i_get_keyword (k_specializers, |
2045 | args, | |
2046 | len - 1, | |
2047 | SCM_EOL, | |
dcb410ec DH |
2048 | FUNC_NAME)); |
2049 | SCM_SET_SLOT (z, scm_si_procedure, | |
80662eda MD |
2050 | scm_i_get_keyword (k_procedure, |
2051 | args, | |
2052 | len - 1, | |
2053 | SCM_EOL, | |
dcb410ec DH |
2054 | FUNC_NAME)); |
2055 | SCM_SET_SLOT (z, scm_si_code_table, SCM_EOL); | |
80662eda MD |
2056 | } |
2057 | else | |
2058 | { | |
2059 | /* In all the others case, make a new class .... No instance here */ | |
dcb410ec | 2060 | SCM_SET_SLOT (z, scm_si_name, |
80662eda MD |
2061 | scm_i_get_keyword (k_name, |
2062 | args, | |
2063 | len - 1, | |
38ae064c | 2064 | scm_str2symbol ("???"), |
dcb410ec DH |
2065 | FUNC_NAME)); |
2066 | SCM_SET_SLOT (z, scm_si_direct_supers, | |
80662eda MD |
2067 | scm_i_get_keyword (k_dsupers, |
2068 | args, | |
2069 | len - 1, | |
2070 | SCM_EOL, | |
dcb410ec DH |
2071 | FUNC_NAME)); |
2072 | SCM_SET_SLOT (z, scm_si_direct_slots, | |
80662eda MD |
2073 | scm_i_get_keyword (k_slots, |
2074 | args, | |
2075 | len - 1, | |
2076 | SCM_EOL, | |
dcb410ec | 2077 | FUNC_NAME)); |
80662eda MD |
2078 | } |
2079 | } | |
2080 | return z; | |
2081 | } | |
398d8ee1 | 2082 | #undef FUNC_NAME |
80662eda | 2083 | |
398d8ee1 KN |
2084 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2085 | (SCM l), | |
2086 | "") | |
2087 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2088 | { |
2089 | SCM gf; | |
c014a02e | 2090 | long len = scm_ilength (l); |
80662eda MD |
2091 | |
2092 | if (len == 0) | |
398d8ee1 | 2093 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2094 | |
2095 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2096 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2097 | if (SCM_NULLP (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2098 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2099 | |
2100 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2101 | } | |
398d8ee1 | 2102 | #undef FUNC_NAME |
80662eda | 2103 | |
398d8ee1 KN |
2104 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2105 | (SCM m1, SCM m2, SCM targs), | |
2106 | "") | |
2107 | #define FUNC_NAME s_scm_sys_method_more_specific_p | |
80662eda MD |
2108 | { |
2109 | SCM l, v; | |
c014a02e | 2110 | long i, len; |
80662eda | 2111 | |
398d8ee1 KN |
2112 | SCM_VALIDATE_METHOD (1, m1); |
2113 | SCM_VALIDATE_METHOD (2, m2); | |
2114 | SCM_ASSERT ((len = scm_ilength (targs)) != -1, targs, SCM_ARG3, FUNC_NAME); | |
80662eda MD |
2115 | |
2116 | /* Verify that all the arguments of targs are classes and place them in a vector*/ | |
00ffa0e7 | 2117 | v = scm_c_make_vector (len, SCM_EOL); |
80662eda MD |
2118 | |
2119 | for (i=0, l=targs; SCM_NNULLP(l); i++, l=SCM_CDR(l)) { | |
398d8ee1 | 2120 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); |
80662eda MD |
2121 | SCM_VELTS(v)[i] = SCM_CAR(l); |
2122 | } | |
2123 | return more_specificp (m1, m2, SCM_VELTS(v)) ? SCM_BOOL_T: SCM_BOOL_F; | |
2124 | } | |
398d8ee1 | 2125 | #undef FUNC_NAME |
80662eda MD |
2126 | |
2127 | ||
2128 | ||
2129 | /****************************************************************************** | |
2130 | * | |
2131 | * Initializations | |
2132 | * | |
2133 | ******************************************************************************/ | |
2134 | ||
2135 | ||
2136 | static void | |
2137 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2138 | { | |
38ae064c | 2139 | SCM tmp = scm_str2symbol (name); |
80662eda MD |
2140 | |
2141 | *var = scm_permanent_object (scm_basic_make_class (meta, | |
2142 | tmp, | |
2143 | SCM_CONSP (super) | |
2144 | ? super | |
1afff620 | 2145 | : scm_list_1 (super), |
80662eda MD |
2146 | slots)); |
2147 | DEFVAR(tmp, *var); | |
2148 | } | |
2149 | ||
2150 | ||
2151 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2152 | ||
2153 | static void | |
2154 | create_standard_classes (void) | |
2155 | { | |
2156 | SCM slots; | |
1afff620 KN |
2157 | SCM method_slots = scm_list_4 (scm_str2symbol ("generic-function"), |
2158 | scm_str2symbol ("specializers"), | |
2159 | scm_str2symbol ("procedure"), | |
2160 | scm_str2symbol ("code-table")); | |
2161 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("slot-definition"), | |
2162 | k_init_keyword, | |
2163 | k_slot_definition)); | |
80662eda | 2164 | #ifdef USE_THREADS |
1afff620 | 2165 | SCM mutex_slot = scm_list_1 (scm_str2symbol ("make-mutex")); |
80662eda MD |
2166 | #else |
2167 | SCM mutex_slot = SCM_BOOL_F; | |
2168 | #endif | |
1afff620 KN |
2169 | SCM gf_slots = scm_list_4 (scm_str2symbol ("methods"), |
2170 | scm_list_3 (scm_str2symbol ("n-specialized"), | |
2171 | k_init_value, | |
2172 | SCM_INUM0), | |
2173 | scm_list_3 (scm_str2symbol ("used-by"), | |
2174 | k_init_value, | |
2175 | SCM_BOOL_F), | |
2176 | scm_list_3 (scm_str2symbol ("cache-mutex"), | |
2177 | k_init_thunk, | |
2178 | scm_closure (scm_list_2 (SCM_EOL, | |
2179 | mutex_slot), | |
2180 | SCM_EOL))); | |
80662eda MD |
2181 | |
2182 | /* Foreign class slot classes */ | |
2183 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2184 | scm_class_class, scm_class_top, SCM_EOL); | |
2185 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2186 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2187 | make_stdcls (&scm_class_opaque, "<opaque-slot>", | |
2188 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2189 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2190 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2191 | make_stdcls (&scm_class_self, "<self-slot>", | |
2192 | scm_class_class, | |
1afff620 | 2193 | scm_list_2 (scm_class_foreign_slot, scm_class_read_only), |
80662eda MD |
2194 | SCM_EOL); |
2195 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", | |
2196 | scm_class_class, | |
1afff620 | 2197 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda MD |
2198 | SCM_EOL); |
2199 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", | |
2200 | scm_class_class, | |
1afff620 | 2201 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2202 | SCM_EOL); |
2203 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2204 | scm_class_class, scm_class_protected, SCM_EOL); | |
2205 | make_stdcls (&scm_class_int, "<int-slot>", | |
2206 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2207 | make_stdcls (&scm_class_float, "<float-slot>", | |
2208 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2209 | make_stdcls (&scm_class_double, "<double-slot>", | |
2210 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2211 | ||
2212 | /* Continue initialization of class <class> */ | |
2213 | ||
2214 | slots = build_class_class_slots (); | |
dcb410ec DH |
2215 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2216 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2217 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2218 | compute_getters_n_setters (slots)); | |
80662eda MD |
2219 | |
2220 | make_stdcls (&scm_class_foreign_class, "<foreign-class>", | |
2221 | scm_class_class, scm_class_class, | |
1afff620 KN |
2222 | scm_list_2 (scm_list_3 (scm_str2symbol ("constructor"), |
2223 | k_class, | |
2224 | scm_class_opaque), | |
2225 | scm_list_3 (scm_str2symbol ("destructor"), | |
2226 | k_class, | |
2227 | scm_class_opaque))); | |
80662eda MD |
2228 | make_stdcls (&scm_class_foreign_object, "<foreign-object>", |
2229 | scm_class_foreign_class, scm_class_object, SCM_EOL); | |
2230 | SCM_SET_CLASS_FLAGS (scm_class_foreign_object, SCM_CLASSF_FOREIGN); | |
2231 | ||
2232 | /* scm_class_generic functions classes */ | |
2233 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2234 | scm_class_class, scm_class_class, SCM_EOL); | |
2235 | make_stdcls (&scm_class_entity_class, "<entity-class>", | |
2236 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2237 | make_stdcls (&scm_class_operator_class, "<operator-class>", | |
2238 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2239 | make_stdcls (&scm_class_operator_with_setter_class, | |
2240 | "<operator-with-setter-class>", | |
2241 | scm_class_class, scm_class_operator_class, SCM_EOL); | |
2242 | make_stdcls (&scm_class_method, "<method>", | |
2243 | scm_class_class, scm_class_object, method_slots); | |
2244 | make_stdcls (&scm_class_simple_method, "<simple-method>", | |
2245 | scm_class_class, scm_class_method, SCM_EOL); | |
2246 | SCM_SET_CLASS_FLAGS (scm_class_simple_method, SCM_CLASSF_SIMPLE_METHOD); | |
2247 | make_stdcls (&scm_class_accessor, "<accessor-method>", | |
2248 | scm_class_class, scm_class_simple_method, amethod_slots); | |
2249 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_ACCESSOR_METHOD); | |
2250 | make_stdcls (&scm_class_entity, "<entity>", | |
2251 | scm_class_entity_class, scm_class_object, SCM_EOL); | |
2252 | make_stdcls (&scm_class_entity_with_setter, "<entity-with-setter>", | |
2253 | scm_class_entity_class, scm_class_entity, SCM_EOL); | |
2254 | make_stdcls (&scm_class_generic, "<generic>", | |
2255 | scm_class_entity_class, scm_class_entity, gf_slots); | |
2256 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); | |
2257 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", | |
2258 | scm_class_entity_class, | |
1afff620 | 2259 | scm_list_2 (scm_class_generic, scm_class_entity_with_setter), |
80662eda MD |
2260 | SCM_EOL); |
2261 | #if 0 | |
2262 | /* Patch cpl since compute_cpl doesn't support multiple inheritance. */ | |
dcb410ec | 2263 | SCM_SET_SLOT (scm_class_generic_with_setter, scm_si_cpl, |
1afff620 KN |
2264 | scm_append (scm_list_3 (scm_list_2 (scm_class_generic_with_setter, |
2265 | scm_class_generic), | |
2266 | SCM_SLOT (scm_class_entity_with_setter, | |
2267 | scm_si_cpl), | |
2268 | SCM_EOL))); | |
80662eda MD |
2269 | #endif |
2270 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); | |
2271 | ||
2272 | /* Primitive types classes */ | |
2273 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2274 | scm_class_class, scm_class_top, SCM_EOL); | |
2275 | make_stdcls (&scm_class_char, "<char>", | |
2276 | scm_class_class, scm_class_top, SCM_EOL); | |
2277 | make_stdcls (&scm_class_list, "<list>", | |
2278 | scm_class_class, scm_class_top, SCM_EOL); | |
2279 | make_stdcls (&scm_class_pair, "<pair>", | |
2280 | scm_class_class, scm_class_list, SCM_EOL); | |
2281 | make_stdcls (&scm_class_null, "<null>", | |
2282 | scm_class_class, scm_class_list, SCM_EOL); | |
2283 | make_stdcls (&scm_class_string, "<string>", | |
2284 | scm_class_class, scm_class_top, SCM_EOL); | |
2285 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2286 | scm_class_class, scm_class_top, SCM_EOL); | |
2287 | make_stdcls (&scm_class_vector, "<vector>", | |
2288 | scm_class_class, scm_class_top, SCM_EOL); | |
2289 | make_stdcls (&scm_class_number, "<number>", | |
2290 | scm_class_class, scm_class_top, SCM_EOL); | |
2291 | make_stdcls (&scm_class_complex, "<complex>", | |
2292 | scm_class_class, scm_class_number, SCM_EOL); | |
2293 | make_stdcls (&scm_class_real, "<real>", | |
2294 | scm_class_class, scm_class_complex, SCM_EOL); | |
2295 | make_stdcls (&scm_class_integer, "<integer>", | |
2296 | scm_class_class, scm_class_real, SCM_EOL); | |
2297 | make_stdcls (&scm_class_keyword, "<keyword>", | |
2298 | scm_class_class, scm_class_top, SCM_EOL); | |
2299 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2300 | scm_class_class, scm_class_top, SCM_EOL); | |
2301 | make_stdcls (&scm_class_procedure, "<procedure>", | |
2302 | scm_class_procedure_class, scm_class_top, SCM_EOL); | |
2303 | make_stdcls (&scm_class_procedure_with_setter, "<procedure-with-setter>", | |
2304 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2305 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", | |
2306 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2307 | make_stdcls (&scm_class_port, "<port>", | |
2308 | scm_class_class, scm_class_top, SCM_EOL); | |
2309 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2310 | scm_class_class, scm_class_port, SCM_EOL); | |
2311 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2312 | scm_class_class, scm_class_port, SCM_EOL); | |
2313 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2314 | scm_class_class, | |
1afff620 | 2315 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2316 | SCM_EOL); |
2317 | } | |
2318 | ||
2319 | /********************************************************************** | |
2320 | * | |
2321 | * Smob classes | |
2322 | * | |
2323 | **********************************************************************/ | |
2324 | ||
2325 | static SCM | |
2326 | make_class_from_template (char *template, char *type_name, SCM supers) | |
2327 | { | |
2328 | SCM class, name; | |
2329 | if (type_name) | |
2330 | { | |
2331 | char buffer[100]; | |
2332 | sprintf (buffer, template, type_name); | |
38ae064c | 2333 | name = scm_str2symbol (buffer); |
80662eda MD |
2334 | } |
2335 | else | |
2336 | name = SCM_GOOPS_UNBOUND; | |
2337 | ||
2338 | class = scm_permanent_object (scm_basic_make_class (scm_class_class, | |
2339 | name, | |
2340 | supers, | |
2341 | SCM_EOL)); | |
2342 | ||
2343 | /* Only define name if doesn't already exist. */ | |
2344 | if (!SCM_GOOPS_UNBOUNDP (name) | |
fdc28395 | 2345 | && SCM_FALSEP (scm_call_2 (scm_goops_lookup_closure, name, SCM_BOOL_F))) |
0ba8a0a5 | 2346 | DEFVAR (name, class); |
80662eda MD |
2347 | return class; |
2348 | } | |
2349 | ||
2350 | SCM | |
2351 | scm_make_extended_class (char *type_name) | |
2352 | { | |
2353 | return make_class_from_template ("<%s>", | |
2354 | type_name, | |
1afff620 | 2355 | scm_list_1 (scm_class_top)); |
80662eda MD |
2356 | } |
2357 | ||
2358 | static void | |
2359 | create_smob_classes (void) | |
2360 | { | |
c014a02e | 2361 | long i; |
80662eda MD |
2362 | |
2363 | scm_smob_class = (SCM *) malloc (255 * sizeof (SCM)); | |
2364 | for (i = 0; i < 255; ++i) | |
2365 | scm_smob_class[i] = 0; | |
2366 | ||
2367 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_big)] = scm_class_integer; | |
2368 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_real)] = scm_class_real; | |
2369 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_complex)] = scm_class_complex; | |
2370 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; | |
2371 | ||
2372 | for (i = 0; i < scm_numsmob; ++i) | |
2373 | if (!scm_smob_class[i]) | |
2374 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i)); | |
2375 | } | |
2376 | ||
2377 | void | |
c014a02e | 2378 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2379 | { |
2380 | SCM c, class = make_class_from_template ("<%s-port>", | |
2381 | type_name, | |
1afff620 | 2382 | scm_list_1 (scm_class_port)); |
80662eda MD |
2383 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2384 | = make_class_from_template ("<%s-input-port>", | |
2385 | type_name, | |
1afff620 | 2386 | scm_list_2 (class, scm_class_input_port)); |
80662eda MD |
2387 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2388 | = make_class_from_template ("<%s-output-port>", | |
2389 | type_name, | |
1afff620 | 2390 | scm_list_2 (class, scm_class_output_port)); |
80662eda MD |
2391 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2392 | = c | |
2393 | = make_class_from_template ("<%s-input-output-port>", | |
2394 | type_name, | |
1afff620 | 2395 | scm_list_2 (class, scm_class_input_output_port)); |
80662eda | 2396 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2397 | SCM_SET_SLOT (c, scm_si_cpl, |
2398 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2399 | } |
2400 | ||
2401 | static void | |
2402 | create_port_classes (void) | |
2403 | { | |
c014a02e | 2404 | long i; |
80662eda MD |
2405 | |
2406 | scm_port_class = (SCM *) malloc (3 * 256 * sizeof (SCM)); | |
2407 | for (i = 0; i < 3 * 256; ++i) | |
2408 | scm_port_class[i] = 0; | |
2409 | ||
2410 | for (i = 0; i < scm_numptob; ++i) | |
2411 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2412 | } | |
2413 | ||
2414 | static SCM | |
e81d98ec DH |
2415 | make_struct_class (void *closure SCM_UNUSED, SCM key SCM_UNUSED, |
2416 | SCM data, SCM prev SCM_UNUSED) | |
80662eda MD |
2417 | { |
2418 | if (SCM_NFALSEP (SCM_STRUCT_TABLE_NAME (data))) | |
2419 | SCM_SET_STRUCT_TABLE_CLASS (data, | |
2420 | scm_make_extended_class | |
b24b5e13 | 2421 | (SCM_SYMBOL_CHARS (SCM_STRUCT_TABLE_NAME (data)))); |
80662eda MD |
2422 | return SCM_UNSPECIFIED; |
2423 | } | |
2424 | ||
2425 | static void | |
2426 | create_struct_classes (void) | |
2427 | { | |
2428 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, scm_struct_table); | |
2429 | } | |
2430 | ||
2431 | /********************************************************************** | |
2432 | * | |
2433 | * C interface | |
2434 | * | |
2435 | **********************************************************************/ | |
2436 | ||
2437 | void | |
2438 | scm_load_goops () | |
2439 | { | |
2440 | if (!goops_loaded_p) | |
abd28220 | 2441 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2442 | } |
2443 | ||
e11208ca | 2444 | |
80662eda MD |
2445 | SCM |
2446 | scm_make_foreign_object (SCM class, SCM initargs) | |
e11208ca | 2447 | #define FUNC_NAME s_scm_make |
80662eda MD |
2448 | { |
2449 | void * (*constructor) (SCM) | |
2450 | = (void * (*) (SCM)) SCM_SLOT (class, scm_si_constructor); | |
e11208ca | 2451 | if (constructor == 0) |
1afff620 | 2452 | SCM_MISC_ERROR ("Can't make instances of class ~S", scm_list_1 (class)); |
80662eda MD |
2453 | return scm_wrap_object (class, constructor (initargs)); |
2454 | } | |
e11208ca DH |
2455 | #undef FUNC_NAME |
2456 | ||
80662eda MD |
2457 | |
2458 | static size_t | |
2459 | scm_free_foreign_object (SCM *class, SCM *data) | |
2460 | { | |
2461 | size_t (*destructor) (void *) | |
2462 | = (size_t (*) (void *)) class[scm_si_destructor]; | |
2463 | return destructor (data); | |
2464 | } | |
2465 | ||
2466 | SCM | |
2467 | scm_make_class (SCM meta, char *s_name, SCM supers, size_t size, | |
2468 | void * (*constructor) (SCM initargs), | |
2469 | size_t (*destructor) (void *)) | |
2470 | { | |
2471 | SCM name, class; | |
38ae064c | 2472 | name = scm_str2symbol (s_name); |
80662eda | 2473 | if (SCM_IMP (supers)) |
1afff620 | 2474 | supers = scm_list_1 (scm_class_foreign_object); |
80662eda MD |
2475 | class = scm_basic_basic_make_class (meta, name, supers, SCM_EOL); |
2476 | scm_sys_inherit_magic_x (class, supers); | |
2477 | ||
2478 | if (destructor != 0) | |
2479 | { | |
dcb410ec | 2480 | SCM_SET_SLOT (class, scm_si_destructor, (SCM) destructor); |
80662eda MD |
2481 | SCM_SET_CLASS_DESTRUCTOR (class, scm_free_foreign_object); |
2482 | } | |
2483 | else if (size > 0) | |
2484 | { | |
2485 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
2486 | SCM_SET_CLASS_INSTANCE_SIZE (class, size); | |
2487 | } | |
2488 | ||
dcb410ec DH |
2489 | SCM_SET_SLOT (class, scm_si_layout, scm_str2symbol ("")); |
2490 | SCM_SET_SLOT (class, scm_si_constructor, (SCM) constructor); | |
80662eda MD |
2491 | |
2492 | return class; | |
2493 | } | |
2494 | ||
2495 | SCM_SYMBOL (sym_o, "o"); | |
2496 | SCM_SYMBOL (sym_x, "x"); | |
2497 | ||
2498 | SCM_KEYWORD (k_accessor, "accessor"); | |
2499 | SCM_KEYWORD (k_getter, "getter"); | |
2500 | ||
2501 | static SCM | |
e81d98ec | 2502 | default_setter (SCM obj SCM_UNUSED, SCM c SCM_UNUSED) |
80662eda MD |
2503 | { |
2504 | scm_misc_error ("slot-set!", "read-only slot", SCM_EOL); | |
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | void | |
2509 | scm_add_slot (SCM class, char *slot_name, SCM slot_class, | |
2510 | SCM (*getter) (SCM obj), | |
2511 | SCM (*setter) (SCM obj, SCM x), | |
2512 | char *accessor_name) | |
2513 | { | |
2514 | { | |
9a441ddb MV |
2515 | SCM get = scm_c_make_subr ("goops:get", scm_tc7_subr_1, getter); |
2516 | SCM set = scm_c_make_subr ("goops:set", scm_tc7_subr_2, | |
2517 | setter ? setter : default_setter); | |
1afff620 KN |
2518 | SCM getm = scm_closure (scm_list_2 (scm_list_1 (sym_o), |
2519 | scm_list_2 (get, sym_o)), | |
80662eda | 2520 | SCM_EOL); |
1afff620 KN |
2521 | SCM setm = scm_closure (scm_list_2 (scm_list_2 (sym_o, sym_x), |
2522 | scm_list_3 (set, sym_o, sym_x)), | |
80662eda MD |
2523 | SCM_EOL); |
2524 | { | |
38ae064c DH |
2525 | SCM name = scm_str2symbol (slot_name); |
2526 | SCM aname = scm_str2symbol (accessor_name); | |
80662eda | 2527 | SCM gf = scm_ensure_accessor (aname); |
1afff620 KN |
2528 | SCM slot = scm_list_5 (name, |
2529 | k_class, | |
2530 | slot_class, | |
2531 | setter ? k_accessor : k_getter, | |
2532 | gf); | |
2533 | SCM gns = scm_list_4 (name, SCM_BOOL_F, get, set); | |
2534 | ||
2535 | scm_add_method (gf, scm_make (scm_list_5 (scm_class_accessor, | |
2536 | k_specializers, | |
2537 | scm_list_1 (class), | |
2538 | k_procedure, | |
2539 | getm))); | |
80662eda | 2540 | scm_add_method (scm_setter (gf), |
1afff620 KN |
2541 | scm_make (scm_list_5 (scm_class_accessor, |
2542 | k_specializers, | |
2543 | scm_list_2 (class, scm_class_top), | |
2544 | k_procedure, | |
2545 | setm))); | |
80662eda MD |
2546 | DEFVAR (aname, gf); |
2547 | ||
dcb410ec | 2548 | SCM_SET_SLOT (class, scm_si_slots, |
1afff620 KN |
2549 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_slots), |
2550 | scm_list_1 (slot)))); | |
dcb410ec | 2551 | SCM_SET_SLOT (class, scm_si_getters_n_setters, |
1afff620 KN |
2552 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_getters_n_setters), |
2553 | scm_list_1 (gns)))); | |
80662eda MD |
2554 | } |
2555 | } | |
2556 | { | |
c014a02e | 2557 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda | 2558 | |
dcb410ec | 2559 | SCM_SET_SLOT (class, scm_si_nfields, SCM_MAKINUM (n + 1)); |
80662eda MD |
2560 | } |
2561 | } | |
2562 | ||
2563 | SCM | |
2564 | scm_wrap_object (SCM class, void *data) | |
2565 | { | |
2566 | SCM z; | |
2567 | SCM_NEWCELL2 (z); | |
2568 | SCM_SETCDR (z, (SCM) data); | |
2569 | SCM_SET_STRUCT_GC_CHAIN (z, 0); | |
2570 | SCM_SETCAR (z, SCM_UNPACK (SCM_CDR (class)) | scm_tc3_cons_gloc); | |
2571 | return z; | |
2572 | } | |
2573 | ||
2574 | SCM scm_components; | |
2575 | ||
2576 | SCM | |
2577 | scm_wrap_component (SCM class, SCM container, void *data) | |
2578 | { | |
2579 | SCM obj = scm_wrap_object (class, data); | |
2580 | SCM handle = scm_hash_fn_create_handle_x (scm_components, | |
2581 | obj, | |
2582 | SCM_BOOL_F, | |
2583 | scm_struct_ihashq, | |
2584 | scm_sloppy_assq, | |
2585 | 0); | |
2586 | SCM_SETCDR (handle, container); | |
2587 | return obj; | |
2588 | } | |
2589 | ||
2590 | SCM | |
2591 | scm_ensure_accessor (SCM name) | |
2592 | { | |
fdc28395 | 2593 | SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); |
80662eda MD |
2594 | if (!SCM_IS_A_P (gf, scm_class_generic_with_setter)) |
2595 | { | |
1afff620 KN |
2596 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
2597 | gf = scm_make (scm_list_5 (scm_class_generic_with_setter, | |
2598 | k_name, name, k_setter, gf)); | |
80662eda MD |
2599 | } |
2600 | return gf; | |
2601 | } | |
2602 | ||
2603 | SCM_SYMBOL (sym_internal_add_method_x, "internal-add-method!"); | |
2604 | ||
2605 | void | |
2606 | scm_add_method (SCM gf, SCM m) | |
2607 | { | |
1afff620 | 2608 | scm_eval (scm_list_3 (sym_internal_add_method_x, gf, m), scm_module_goops); |
80662eda MD |
2609 | } |
2610 | ||
2611 | #ifdef GUILE_DEBUG | |
2612 | /* | |
2613 | * Debugging utilities | |
2614 | */ | |
2615 | ||
398d8ee1 KN |
2616 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2617 | (SCM obj), | |
6bcefd15 | 2618 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2619 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2620 | { |
25ba37df | 2621 | return SCM_BOOL (SCM_PUREGENERICP (obj)); |
80662eda | 2622 | } |
398d8ee1 | 2623 | #undef FUNC_NAME |
80662eda MD |
2624 | |
2625 | #endif /* GUILE_DEBUG */ | |
2626 | ||
2627 | /* | |
2628 | * Initialization | |
2629 | */ | |
2630 | ||
398d8ee1 KN |
2631 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2632 | (), | |
6bcefd15 MG |
2633 | "Announce that GOOPS is loaded and perform initialization\n" |
2634 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2635 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2636 | { |
2637 | goops_loaded_p = 1; | |
86d31dfe MV |
2638 | var_compute_applicable_methods = |
2639 | scm_sym2var (sym_compute_applicable_methods, scm_goops_lookup_closure, | |
2640 | SCM_BOOL_F); | |
80662eda MD |
2641 | return SCM_UNSPECIFIED; |
2642 | } | |
398d8ee1 | 2643 | #undef FUNC_NAME |
80662eda MD |
2644 | |
2645 | SCM scm_module_goops; | |
2646 | ||
abd28220 MV |
2647 | SCM |
2648 | scm_init_goops_builtins (void) | |
80662eda | 2649 | { |
abd28220 | 2650 | scm_module_goops = scm_current_module (); |
80662eda MD |
2651 | scm_goops_lookup_closure = scm_module_lookup_closure (scm_module_goops); |
2652 | ||
0ba8a0a5 MV |
2653 | /* Not really necessary right now, but who knows... |
2654 | */ | |
2655 | scm_permanent_object (scm_module_goops); | |
2656 | scm_permanent_object (scm_goops_lookup_closure); | |
2657 | ||
80662eda MD |
2658 | scm_components = scm_permanent_object (scm_make_weak_key_hash_table |
2659 | (SCM_MAKINUM (37))); | |
2660 | ||
2661 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); | |
2662 | ||
8dc9439f | 2663 | #ifndef SCM_MAGIC_SNARFER |
80662eda | 2664 | #include "libguile/goops.x" |
8dc9439f | 2665 | #endif |
80662eda | 2666 | |
1afff620 | 2667 | list_of_no_method = scm_permanent_object (scm_list_1 (sym_no_method)); |
80662eda MD |
2668 | |
2669 | hell = scm_must_malloc (hell_size, "hell"); | |
2670 | #ifdef USE_THREADS | |
2671 | scm_mutex_init (&hell_mutex); | |
2672 | #endif | |
2673 | ||
2674 | create_basic_classes (); | |
2675 | create_standard_classes (); | |
2676 | create_smob_classes (); | |
2677 | create_struct_classes (); | |
2678 | create_port_classes (); | |
2679 | ||
2680 | { | |
38ae064c | 2681 | SCM name = scm_str2symbol ("no-applicable-method"); |
80662eda | 2682 | scm_no_applicable_method |
1afff620 KN |
2683 | = scm_permanent_object (scm_make (scm_list_3 (scm_class_generic, |
2684 | k_name, | |
2685 | name))); | |
80662eda MD |
2686 | DEFVAR (name, scm_no_applicable_method); |
2687 | } | |
abd28220 MV |
2688 | |
2689 | return SCM_UNSPECIFIED; | |
80662eda MD |
2690 | } |
2691 | ||
2692 | void | |
abd28220 | 2693 | scm_init_goops () |
80662eda | 2694 | { |
9a441ddb MV |
2695 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2696 | scm_init_goops_builtins); | |
80662eda | 2697 | } |
23437298 DH |
2698 | |
2699 | /* | |
2700 | Local Variables: | |
2701 | c-file-style: "gnu" | |
2702 | End: | |
2703 | */ |