Commit | Line | Data |
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a4aa2134 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc. |
6d77c894 | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
6d77c894 | 7 | * |
73be1d9e | 8 | * This library is distributed in the hope that it will be useful, |
80662eda | 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
6d77c894 | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
80662eda MD |
17 | \f |
18 | ||
19 | /* This software is a derivative work of other copyrighted softwares; the | |
20 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
21 | * | |
22 | * This file is based upon stklos.c from the STk distribution by | |
23 | * Erick Gallesio <eg@unice.fr>. | |
24 | */ | |
25 | ||
26 | #include <stdio.h> | |
27 | ||
28 | #include "libguile/_scm.h" | |
29 | #include "libguile/alist.h" | |
30 | #include "libguile/debug.h" | |
31 | #include "libguile/dynl.h" | |
32 | #include "libguile/dynwind.h" | |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/hashtab.h" | |
35 | #include "libguile/keywords.h" | |
36 | #include "libguile/macros.h" | |
37 | #include "libguile/modules.h" | |
38 | #include "libguile/objects.h" | |
39 | #include "libguile/ports.h" | |
40 | #include "libguile/procprop.h" | |
41 | #include "libguile/random.h" | |
fdc28395 | 42 | #include "libguile/root.h" |
80662eda MD |
43 | #include "libguile/smob.h" |
44 | #include "libguile/strings.h" | |
45 | #include "libguile/strports.h" | |
46 | #include "libguile/vectors.h" | |
47 | #include "libguile/weaks.h" | |
48 | ||
ca83b028 | 49 | #include "libguile/validate.h" |
80662eda MD |
50 | #include "libguile/goops.h" |
51 | ||
80662eda MD |
52 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
53 | ||
34d19ef6 | 54 | #define DEFVAR(v, val) \ |
1afff620 KN |
55 | { scm_eval (scm_list_3 (scm_sym_define_public, (v), (val)), \ |
56 | scm_module_goops); } | |
80662eda MD |
57 | /* Temporary hack until we get the new module system */ |
58 | /*fixme* Should optimize by keeping track of the variable object itself */ | |
fdc28395 KN |
59 | #define GETVAR(v) (SCM_VARIABLE_REF (scm_call_2 (scm_goops_lookup_closure, \ |
60 | (v), SCM_BOOL_F))) | |
80662eda MD |
61 | |
62 | /* Fixme: Should use already interned symbols */ | |
34d19ef6 | 63 | #define CALL_GF1(name, a) (scm_call_1 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 64 | a)) |
34d19ef6 | 65 | #define CALL_GF2(name, a, b) (scm_call_2 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 66 | a, b)) |
34d19ef6 | 67 | #define CALL_GF3(name, a, b, c) (scm_call_3 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 68 | a, b, c)) |
34d19ef6 | 69 | #define CALL_GF4(name, a, b, c, d) (scm_call_4 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 70 | a, b, c, d)) |
80662eda MD |
71 | |
72 | /* Class redefinition protocol: | |
73 | ||
74 | A class is represented by a heap header h1 which points to a | |
75 | malloc:ed memory block m1. | |
76 | ||
77 | When a new version of a class is created, a new header h2 and | |
78 | memory block m2 are allocated. The headers h1 and h2 then switch | |
79 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
80 | bound to h1 will point to the new class at the same time as h2 will | |
81 | be a handle which the GC will us to free m1. | |
82 | ||
83 | The `redefined' slot of m1 will be set to point to h1. An old | |
84 | instance will have it's class pointer (the CAR of the heap header) | |
85 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates | |
86 | the class modification and the new class pointer can be found via | |
87 | h1. | |
88 | */ | |
89 | ||
80662eda MD |
90 | /* The following definition is located in libguile/objects.h: |
91 | #define SCM_OBJ_CLASS_REDEF(x) (SCM_STRUCT_VTABLE_DATA(x)[scm_si_redefined]) | |
92 | */ | |
93 | ||
0fd7dcd3 MD |
94 | #define TEST_CHANGE_CLASS(obj, class) \ |
95 | { \ | |
96 | class = SCM_CLASS_OF (obj); \ | |
0c88d7df | 97 | if (!SCM_FALSEP (SCM_OBJ_CLASS_REDEF (obj))) \ |
0fd7dcd3 MD |
98 | { \ |
99 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\ | |
100 | class = SCM_CLASS_OF (obj); \ | |
101 | } \ | |
80662eda MD |
102 | } |
103 | ||
104 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
105 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
106 | ||
107 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
108 | #define SCM_GOOPS_UNBOUNDP(x) ((x) == SCM_GOOPS_UNBOUND) | |
109 | ||
110 | static int goops_loaded_p = 0; | |
92c2555f | 111 | static scm_t_rstate *goops_rstate; |
80662eda MD |
112 | |
113 | static SCM scm_goops_lookup_closure; | |
114 | ||
115 | /* Some classes are defined in libguile/objects.c. */ | |
116 | SCM scm_class_top, scm_class_object, scm_class_class; | |
74b6d6e4 | 117 | SCM scm_class_applicable; |
80662eda | 118 | SCM scm_class_entity, scm_class_entity_with_setter; |
bbf8d523 | 119 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 120 | SCM scm_class_accessor; |
bbf8d523 | 121 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 122 | SCM scm_class_extended_accessor; |
bbf8d523 | 123 | SCM scm_class_method; |
f8af5c6d | 124 | SCM scm_class_simple_method, scm_class_accessor_method; |
80662eda MD |
125 | SCM scm_class_procedure_class; |
126 | SCM scm_class_operator_class, scm_class_operator_with_setter_class; | |
127 | SCM scm_class_entity_class; | |
128 | SCM scm_class_number, scm_class_list; | |
129 | SCM scm_class_keyword; | |
130 | SCM scm_class_port, scm_class_input_output_port; | |
131 | SCM scm_class_input_port, scm_class_output_port; | |
132 | SCM scm_class_foreign_class, scm_class_foreign_object; | |
133 | SCM scm_class_foreign_slot; | |
134 | SCM scm_class_self, scm_class_protected; | |
135 | SCM scm_class_opaque, scm_class_read_only; | |
136 | SCM scm_class_protected_opaque, scm_class_protected_read_only; | |
137 | SCM scm_class_scm; | |
138 | SCM scm_class_int, scm_class_float, scm_class_double; | |
139 | ||
140 | SCM_SYMBOL (scm_sym_define_public, "define-public"); | |
141 | ||
142 | static SCM scm_make_unbound (void); | |
143 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
144 | static SCM scm_assert_bound (SCM value, SCM obj); |
145 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
146 | static SCM scm_sys_goops_loaded (void); | |
80662eda MD |
147 | |
148 | /****************************************************************************** | |
149 | * | |
150 | * Compute-cpl | |
151 | * | |
bbf8d523 MD |
152 | * This version doesn't fully handle multiple-inheritance. It serves |
153 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
154 | * |
155 | ******************************************************************************/ | |
156 | ||
80662eda MD |
157 | static SCM |
158 | map (SCM (*proc) (SCM), SCM ls) | |
159 | { | |
6b80d352 | 160 | if (SCM_NULLP (ls)) |
80662eda | 161 | return ls; |
6b80d352 DH |
162 | else |
163 | { | |
164 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
165 | SCM h = res; | |
166 | ls = SCM_CDR (ls); | |
167 | while (!SCM_NULLP (ls)) | |
168 | { | |
169 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
170 | h = SCM_CDR (h); | |
171 | ls = SCM_CDR (ls); | |
172 | } | |
173 | return res; | |
174 | } | |
80662eda MD |
175 | } |
176 | ||
177 | static SCM | |
178 | filter_cpl (SCM ls) | |
179 | { | |
180 | SCM res = SCM_EOL; | |
6b80d352 | 181 | while (!SCM_NULLP (ls)) |
80662eda MD |
182 | { |
183 | SCM el = SCM_CAR (ls); | |
79a3dafe | 184 | if (SCM_FALSEP (scm_c_memq (el, res))) |
80662eda MD |
185 | res = scm_cons (el, res); |
186 | ls = SCM_CDR (ls); | |
187 | } | |
188 | return res; | |
189 | } | |
190 | ||
191 | static SCM | |
192 | compute_cpl (SCM class) | |
193 | { | |
194 | if (goops_loaded_p) | |
195 | return CALL_GF1 ("compute-cpl", class); | |
196 | else | |
197 | { | |
198 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
199 | SCM ls = scm_append (scm_acons (class, supers, | |
200 | map (compute_cpl, supers))); | |
201 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
202 | } | |
203 | } | |
204 | ||
205 | /****************************************************************************** | |
206 | * | |
207 | * compute-slots | |
208 | * | |
209 | ******************************************************************************/ | |
210 | ||
211 | static SCM | |
212 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
213 | { | |
214 | SCM tmp; | |
215 | ||
216 | if (SCM_NULLP (l)) | |
217 | return res; | |
218 | ||
219 | tmp = SCM_CAAR (l); | |
c312aca7 | 220 | if (!SCM_SYMBOLP (tmp)) |
1afff620 | 221 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 222 | |
79a3dafe | 223 | if (SCM_FALSEP (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
224 | res = scm_cons (SCM_CAR (l), res); |
225 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
226 | } | |
6d77c894 | 227 | |
80662eda MD |
228 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
229 | } | |
230 | ||
231 | static SCM | |
232 | build_slots_list (SCM dslots, SCM cpl) | |
233 | { | |
234 | register SCM res = dslots; | |
235 | ||
6b80d352 | 236 | for (cpl = SCM_CDR (cpl); !SCM_NULLP (cpl); cpl = SCM_CDR (cpl)) |
1afff620 KN |
237 | res = scm_append (scm_list_2 (SCM_SLOT (SCM_CAR (cpl), |
238 | scm_si_direct_slots), | |
239 | res)); | |
80662eda MD |
240 | |
241 | /* res contains a list of slots. Remove slots which appears more than once */ | |
242 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
243 | } | |
244 | ||
245 | static SCM | |
246 | maplist (SCM ls) | |
247 | { | |
248 | SCM orig = ls; | |
6b80d352 | 249 | while (!SCM_NULLP (ls)) |
80662eda | 250 | { |
c312aca7 | 251 | if (!SCM_CONSP (SCM_CAR (ls))) |
80662eda MD |
252 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
253 | ls = SCM_CDR (ls); | |
254 | } | |
255 | return orig; | |
256 | } | |
257 | ||
80662eda | 258 | |
23437298 DH |
259 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
260 | (SCM class), | |
5352393c MG |
261 | "Return a list consisting of the names of all slots belonging to\n" |
262 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 263 | "its superclasses.") |
23437298 | 264 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 265 | { |
398d8ee1 | 266 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
267 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
268 | SCM_SLOT (class, scm_si_cpl)); | |
269 | } | |
23437298 DH |
270 | #undef FUNC_NAME |
271 | ||
80662eda MD |
272 | |
273 | /****************************************************************************** | |
274 | * | |
275 | * compute-getters-n-setters | |
6d77c894 TTN |
276 | * |
277 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 278 | * classes and will be overloaded in Scheme. |
80662eda MD |
279 | * |
280 | ******************************************************************************/ | |
281 | ||
282 | SCM_KEYWORD (k_init_value, "init-value"); | |
283 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
284 | ||
285 | static SCM | |
286 | compute_getters_n_setters (SCM slots) | |
287 | { | |
288 | SCM res = SCM_EOL; | |
289 | SCM *cdrloc = &res; | |
c014a02e | 290 | long i = 0; |
80662eda | 291 | |
6b80d352 | 292 | for ( ; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
293 | { |
294 | SCM init = SCM_BOOL_F; | |
295 | SCM options = SCM_CDAR (slots); | |
6b80d352 | 296 | if (!SCM_NULLP (options)) |
80662eda MD |
297 | { |
298 | init = scm_get_keyword (k_init_value, options, 0); | |
299 | if (init) | |
bbf8d523 MD |
300 | init = scm_closure (scm_list_2 (SCM_EOL, |
301 | scm_list_2 (scm_sym_quote, init)), | |
302 | SCM_EOL); | |
80662eda MD |
303 | else |
304 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
305 | } | |
306 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
307 | scm_cons (init, | |
308 | SCM_MAKINUM (i++))), | |
309 | SCM_EOL); | |
310 | cdrloc = SCM_CDRLOC (*cdrloc); | |
311 | } | |
312 | return res; | |
313 | } | |
314 | ||
315 | /****************************************************************************** | |
316 | * | |
317 | * initialize-object | |
318 | * | |
319 | ******************************************************************************/ | |
320 | ||
321 | /*fixme* Manufacture keywords in advance */ | |
322 | SCM | |
c014a02e | 323 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 324 | { |
c014a02e | 325 | long i; |
23437298 DH |
326 | |
327 | for (i = 0; i != len; i += 2) | |
80662eda | 328 | { |
23437298 DH |
329 | SCM obj = SCM_CAR (l); |
330 | ||
331 | if (!SCM_KEYWORDP (obj)) | |
1afff620 | 332 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
23437298 | 333 | else if (SCM_EQ_P (obj, key)) |
80662eda | 334 | return SCM_CADR (l); |
23437298 DH |
335 | else |
336 | l = SCM_CDDR (l); | |
80662eda | 337 | } |
23437298 | 338 | |
80662eda MD |
339 | return default_value; |
340 | } | |
341 | ||
80662eda | 342 | |
23437298 DH |
343 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
344 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
345 | "Determine an associated value for the keyword @var{key} from\n" |
346 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
347 | "number of elements, where, starting with the first, every\n" | |
348 | "second element is a keyword, followed by its associated value.\n" | |
349 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
350 | "@var{default_value} is returned.") | |
23437298 | 351 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 352 | { |
c014a02e | 353 | long len; |
23437298 DH |
354 | |
355 | SCM_ASSERT (SCM_KEYWORDP (key), key, SCM_ARG1, FUNC_NAME); | |
80662eda | 356 | len = scm_ilength (l); |
b6311c08 | 357 | if (len < 0 || len % 2 == 1) |
1afff620 | 358 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
359 | |
360 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 361 | } |
23437298 DH |
362 | #undef FUNC_NAME |
363 | ||
80662eda | 364 | |
80662eda MD |
365 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
366 | ||
367 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
368 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
369 | ||
398d8ee1 KN |
370 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
371 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
372 | "Initialize the object @var{obj} with the given arguments\n" |
373 | "@var{initargs}.") | |
398d8ee1 | 374 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
375 | { |
376 | SCM tmp, get_n_set, slots; | |
377 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 378 | long n_initargs; |
80662eda | 379 | |
398d8ee1 | 380 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 381 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 382 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 383 | |
80662eda MD |
384 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
385 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 386 | |
80662eda MD |
387 | /* See for each slot how it must be initialized */ |
388 | for (; | |
6b80d352 | 389 | !SCM_NULLP (slots); |
80662eda MD |
390 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
391 | { | |
392 | SCM slot_name = SCM_CAR (slots); | |
393 | SCM slot_value = 0; | |
6d77c894 | 394 | |
6b80d352 | 395 | if (!SCM_NULLP (SCM_CDR (slot_name))) |
80662eda MD |
396 | { |
397 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 398 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 399 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 400 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 401 | scm_list_1 (slot_name)); |
80662eda MD |
402 | tmp = scm_i_get_keyword (k_init_keyword, |
403 | SCM_CDR (slot_name), | |
404 | n, | |
405 | 0, | |
398d8ee1 | 406 | FUNC_NAME); |
80662eda MD |
407 | slot_name = SCM_CAR (slot_name); |
408 | if (tmp) | |
409 | { | |
410 | /* an initarg was provided for this slot */ | |
c312aca7 | 411 | if (!SCM_KEYWORDP (tmp)) |
398d8ee1 | 412 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 413 | scm_list_1 (tmp)); |
80662eda MD |
414 | slot_value = scm_i_get_keyword (tmp, |
415 | initargs, | |
416 | n_initargs, | |
417 | 0, | |
398d8ee1 | 418 | FUNC_NAME); |
80662eda MD |
419 | } |
420 | } | |
421 | ||
422 | if (slot_value) | |
423 | /* set slot to provided value */ | |
424 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
425 | else | |
426 | { | |
427 | /* set slot to its :init-form if it exists */ | |
428 | tmp = SCM_CADAR (get_n_set); | |
0c88d7df | 429 | if (!SCM_FALSEP (tmp)) |
80662eda MD |
430 | { |
431 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
432 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
433 | { | |
434 | SCM env = SCM_EXTEND_ENV (SCM_EOL, SCM_EOL, SCM_ENV (tmp)); | |
435 | set_slot_value (class, | |
436 | obj, | |
437 | SCM_CAR (get_n_set), | |
f9450cdb | 438 | scm_eval_body (SCM_CLOSURE_BODY (tmp), env)); |
80662eda MD |
439 | } |
440 | } | |
441 | } | |
442 | } | |
6d77c894 | 443 | |
80662eda MD |
444 | return obj; |
445 | } | |
398d8ee1 | 446 | #undef FUNC_NAME |
80662eda | 447 | |
21ab2aeb MD |
448 | /* NOTE: The following macros are interdependent with code |
449 | * in goops.scm:compute-getters-n-setters | |
450 | */ | |
451 | #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \ | |
452 | (SCM_INUMP (SCM_CDDR (gns)) \ | |
453 | || (SCM_CONSP (SCM_CDDR (gns)) \ | |
454 | && SCM_CONSP (SCM_CDDDR (gns)) \ | |
455 | && SCM_CONSP (SCM_CDDDDR (gns)))) | |
456 | #define SCM_GNS_INDEX(gns) \ | |
457 | (SCM_INUMP (SCM_CDDR (gns)) \ | |
458 | ? SCM_INUM (SCM_CDDR (gns)) \ | |
459 | : SCM_INUM (SCM_CAR (SCM_CDDDDR (gns)))) | |
460 | #define SCM_GNS_SIZE(gns) \ | |
461 | (SCM_INUMP (SCM_CDDR (gns)) \ | |
462 | ? 1 \ | |
463 | : SCM_INUM (SCM_CADR (SCM_CDDDDR (gns)))) | |
80662eda MD |
464 | |
465 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
466 | SCM_KEYWORD (k_allocation, "allocation"); |
467 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 468 | |
398d8ee1 KN |
469 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
470 | (SCM class), | |
471 | "") | |
472 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 473 | { |
21ab2aeb | 474 | SCM slots, getters_n_setters, nfields; |
6b80d352 DH |
475 | unsigned long int n, i; |
476 | char *s; | |
80662eda | 477 | |
398d8ee1 | 478 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda | 479 | slots = SCM_SLOT (class, scm_si_slots); |
21ab2aeb | 480 | getters_n_setters = SCM_SLOT (class, scm_si_getters_n_setters); |
80662eda MD |
481 | nfields = SCM_SLOT (class, scm_si_nfields); |
482 | if (!SCM_INUMP (nfields) || SCM_INUM (nfields) < 0) | |
398d8ee1 | 483 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 484 | scm_list_1 (nfields)); |
80662eda MD |
485 | n = 2 * SCM_INUM (nfields); |
486 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 | |
487 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 488 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 489 | scm_list_1 (nfields)); |
6d77c894 | 490 | |
4c9419ac | 491 | s = n > 0 ? scm_malloc (n) : 0; |
21ab2aeb MD |
492 | i = 0; |
493 | while (SCM_CONSP (getters_n_setters)) | |
80662eda | 494 | { |
21ab2aeb | 495 | if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters))) |
b46fae00 | 496 | { |
21ab2aeb MD |
497 | SCM type; |
498 | int len, index, size; | |
499 | char p, a; | |
500 | ||
501 | if (i >= n || !SCM_CONSP (slots)) | |
502 | goto inconsistent; | |
503 | ||
504 | /* extract slot type */ | |
b46fae00 | 505 | len = scm_ilength (SCM_CDAR (slots)); |
21ab2aeb MD |
506 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), |
507 | len, SCM_BOOL_F, FUNC_NAME); | |
508 | /* determine slot GC protection and access mode */ | |
509 | if (SCM_FALSEP (type)) | |
6b80d352 | 510 | { |
21ab2aeb MD |
511 | p = 'p'; |
512 | a = 'w'; | |
6b80d352 DH |
513 | } |
514 | else | |
515 | { | |
21ab2aeb MD |
516 | if (!SCM_CLASSP (type)) |
517 | { | |
518 | if (s) | |
519 | free (s); | |
520 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); | |
521 | } | |
522 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) | |
523 | { | |
524 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
525 | p = 's'; | |
526 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
527 | p = 'p'; | |
528 | else | |
529 | p = 'u'; | |
530 | ||
531 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
532 | a = 'o'; | |
533 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
534 | a = 'r'; | |
535 | else | |
536 | a = 'w'; | |
537 | } | |
538 | else | |
539 | { | |
540 | p = 'p'; | |
541 | a = 'w'; | |
542 | } | |
543 | } | |
544 | ||
545 | index = SCM_GNS_INDEX (SCM_CAR (getters_n_setters)); | |
546 | if (index != (i >> 1)) | |
547 | goto inconsistent; | |
548 | size = SCM_GNS_SIZE (SCM_CAR (getters_n_setters)); | |
549 | while (size) | |
550 | { | |
551 | s[i++] = p; | |
552 | s[i++] = a; | |
553 | --size; | |
6b80d352 | 554 | } |
80662eda | 555 | } |
80662eda | 556 | slots = SCM_CDR (slots); |
21ab2aeb MD |
557 | getters_n_setters = SCM_CDR (getters_n_setters); |
558 | } | |
559 | if (!SCM_NULLP (slots)) | |
560 | { | |
561 | inconsistent: | |
562 | if (s) | |
563 | free (s); | |
564 | SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL); | |
80662eda | 565 | } |
dcb410ec | 566 | SCM_SET_SLOT (class, scm_si_layout, scm_mem2symbol (s, n)); |
80662eda | 567 | if (s) |
4c9419ac | 568 | free (s); |
80662eda MD |
569 | return SCM_UNSPECIFIED; |
570 | } | |
398d8ee1 | 571 | #undef FUNC_NAME |
80662eda MD |
572 | |
573 | static void prep_hashsets (SCM); | |
574 | ||
398d8ee1 KN |
575 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
576 | (SCM class, SCM dsupers), | |
577 | "") | |
578 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda MD |
579 | { |
580 | SCM ls = dsupers; | |
c014a02e | 581 | long flags = 0; |
398d8ee1 | 582 | SCM_VALIDATE_INSTANCE (1, class); |
6b80d352 | 583 | while (!SCM_NULLP (ls)) |
80662eda | 584 | { |
c312aca7 | 585 | SCM_ASSERT (SCM_CONSP (ls) |
80662eda MD |
586 | && SCM_INSTANCEP (SCM_CAR (ls)), |
587 | dsupers, | |
588 | SCM_ARG2, | |
398d8ee1 | 589 | FUNC_NAME); |
80662eda MD |
590 | flags |= SCM_CLASS_FLAGS (SCM_CAR (ls)); |
591 | ls = SCM_CDR (ls); | |
592 | } | |
593 | flags &= SCM_CLASSF_INHERIT; | |
594 | if (flags & SCM_CLASSF_ENTITY) | |
595 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_entity); | |
596 | else | |
597 | { | |
c014a02e | 598 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda MD |
599 | #if 0 |
600 | /* | |
4c9419ac | 601 | * We could avoid calling scm_gc_malloc in the allocation code |
80662eda MD |
602 | * (in which case the following two lines are needed). Instead |
603 | * we make 0-slot instances non-light, so that the light case | |
604 | * can be handled without special cases. | |
605 | */ | |
606 | if (n == 0) | |
607 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_0); | |
608 | #endif | |
609 | if (n > 0 && !(flags & SCM_CLASSF_METACLASS)) | |
610 | { | |
611 | /* NOTE: The following depends on scm_struct_i_size. */ | |
612 | flags |= SCM_STRUCTF_LIGHT + n * sizeof (SCM); /* use light representation */ | |
613 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
614 | } | |
615 | } | |
616 | SCM_SET_CLASS_FLAGS (class, flags); | |
617 | ||
618 | prep_hashsets (class); | |
6d77c894 | 619 | |
80662eda MD |
620 | return SCM_UNSPECIFIED; |
621 | } | |
398d8ee1 | 622 | #undef FUNC_NAME |
80662eda | 623 | |
63c1872f | 624 | static void |
80662eda MD |
625 | prep_hashsets (SCM class) |
626 | { | |
dcb410ec | 627 | unsigned int i; |
80662eda MD |
628 | |
629 | for (i = 0; i < 7; ++i) | |
dcb410ec | 630 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
631 | } |
632 | ||
633 | /******************************************************************************/ | |
634 | ||
635 | SCM | |
636 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
637 | { | |
638 | SCM z, cpl, slots, nfields, g_n_s; | |
639 | ||
640 | /* Allocate one instance */ | |
641 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
642 | ||
643 | /* Initialize its slots */ | |
dcb410ec | 644 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
645 | cpl = compute_cpl (z); |
646 | slots = build_slots_list (maplist (dslots), cpl); | |
647 | nfields = SCM_MAKINUM (scm_ilength (slots)); | |
648 | g_n_s = compute_getters_n_setters (slots); | |
649 | ||
dcb410ec DH |
650 | SCM_SET_SLOT (z, scm_si_name, name); |
651 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); | |
652 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
653 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
654 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
655 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
656 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
657 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
658 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
659 | SCM_SET_SLOT (z, scm_si_environment, | |
660 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
661 | |
662 | /* Add this class in the direct-subclasses slot of dsupers */ | |
663 | { | |
664 | SCM tmp; | |
dcb410ec DH |
665 | for (tmp = dsupers; !SCM_NULLP (tmp); tmp = SCM_CDR (tmp)) |
666 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, | |
667 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
668 | scm_si_direct_subclasses))); | |
80662eda MD |
669 | } |
670 | ||
671 | /* Support for the underlying structs: */ | |
672 | SCM_SET_CLASS_FLAGS (z, (class == scm_class_entity_class | |
673 | ? (SCM_CLASSF_GOOPS_OR_VALID | |
674 | | SCM_CLASSF_OPERATOR | |
675 | | SCM_CLASSF_ENTITY) | |
676 | : class == scm_class_operator_class | |
677 | ? SCM_CLASSF_GOOPS_OR_VALID | SCM_CLASSF_OPERATOR | |
678 | : SCM_CLASSF_GOOPS_OR_VALID)); | |
679 | return z; | |
680 | } | |
681 | ||
682 | SCM | |
683 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
684 | { | |
685 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
686 | scm_sys_inherit_magic_x (z, dsupers); | |
687 | scm_sys_prep_layout_x (z); | |
688 | return z; | |
689 | } | |
690 | ||
691 | /******************************************************************************/ | |
692 | ||
6b80d352 DH |
693 | SCM_SYMBOL (sym_layout, "layout"); |
694 | SCM_SYMBOL (sym_vcell, "vcell"); | |
695 | SCM_SYMBOL (sym_vtable, "vtable"); | |
696 | SCM_SYMBOL (sym_print, "print"); | |
697 | SCM_SYMBOL (sym_procedure, "procedure"); | |
698 | SCM_SYMBOL (sym_setter, "setter"); | |
699 | SCM_SYMBOL (sym_redefined, "redefined"); | |
700 | SCM_SYMBOL (sym_h0, "h0"); | |
701 | SCM_SYMBOL (sym_h1, "h1"); | |
702 | SCM_SYMBOL (sym_h2, "h2"); | |
703 | SCM_SYMBOL (sym_h3, "h3"); | |
704 | SCM_SYMBOL (sym_h4, "h4"); | |
705 | SCM_SYMBOL (sym_h5, "h5"); | |
706 | SCM_SYMBOL (sym_h6, "h6"); | |
707 | SCM_SYMBOL (sym_h7, "h7"); | |
708 | SCM_SYMBOL (sym_name, "name"); | |
709 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
710 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
711 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
712 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
713 | SCM_SYMBOL (sym_cpl, "cpl"); | |
714 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
715 | SCM_SYMBOL (sym_slots, "slots"); | |
716 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
717 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
718 | SCM_SYMBOL (sym_nfields, "nfields"); | |
719 | SCM_SYMBOL (sym_environment, "environment"); | |
720 | ||
721 | ||
80662eda MD |
722 | static SCM |
723 | build_class_class_slots () | |
724 | { | |
6b80d352 DH |
725 | return scm_list_n ( |
726 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
6b80d352 DH |
727 | scm_list_3 (sym_vtable, k_class, scm_class_self), |
728 | scm_list_1 (sym_print), | |
729 | scm_list_3 (sym_procedure, k_class, scm_class_protected_opaque), | |
730 | scm_list_3 (sym_setter, k_class, scm_class_protected_opaque), | |
731 | scm_list_1 (sym_redefined), | |
732 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
733 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
734 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
735 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
736 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
737 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
738 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
739 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
740 | scm_list_1 (sym_name), | |
741 | scm_list_1 (sym_direct_supers), | |
742 | scm_list_1 (sym_direct_slots), | |
743 | scm_list_1 (sym_direct_subclasses), | |
744 | scm_list_1 (sym_direct_methods), | |
745 | scm_list_1 (sym_cpl), | |
746 | scm_list_1 (sym_default_slot_definition_class), | |
747 | scm_list_1 (sym_slots), | |
748 | scm_list_1 (sym_getters_n_setters), | |
749 | scm_list_1 (sym_keyword_access), | |
750 | scm_list_1 (sym_nfields), | |
751 | scm_list_1 (sym_environment), | |
752 | SCM_UNDEFINED); | |
80662eda MD |
753 | } |
754 | ||
755 | static void | |
756 | create_basic_classes (void) | |
757 | { | |
758 | /* SCM slots_of_class = build_class_class_slots (); */ | |
759 | ||
760 | /**** <scm_class_class> ****/ | |
761 | SCM cs = scm_makfrom0str (SCM_CLASS_CLASS_LAYOUT | |
762 | + 2 * scm_vtable_offset_user); | |
38ae064c | 763 | SCM name = scm_str2symbol ("<class>"); |
80662eda MD |
764 | scm_class_class = scm_permanent_object (scm_make_vtable_vtable (cs, |
765 | SCM_INUM0, | |
766 | SCM_EOL)); | |
767 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID | |
768 | | SCM_CLASSF_METACLASS)); | |
769 | ||
dcb410ec DH |
770 | SCM_SET_SLOT (scm_class_class, scm_si_name, name); |
771 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ | |
772 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
773 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 774 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
775 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
776 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
777 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, SCM_MAKINUM (SCM_N_CLASS_SLOTS)); | |
778 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
779 | compute_getters_n_setters (slots_of_class)); */ | |
780 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
781 | SCM_SET_SLOT (scm_class_class, scm_si_environment, | |
782 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
783 | |
784 | prep_hashsets (scm_class_class); | |
785 | ||
786 | DEFVAR(name, scm_class_class); | |
787 | ||
788 | /**** <scm_class_top> ****/ | |
38ae064c | 789 | name = scm_str2symbol ("<top>"); |
80662eda MD |
790 | scm_class_top = scm_permanent_object (scm_basic_make_class (scm_class_class, |
791 | name, | |
792 | SCM_EOL, | |
793 | SCM_EOL)); | |
794 | ||
795 | DEFVAR(name, scm_class_top); | |
6d77c894 | 796 | |
80662eda | 797 | /**** <scm_class_object> ****/ |
38ae064c | 798 | name = scm_str2symbol ("<object>"); |
80662eda MD |
799 | scm_class_object = scm_permanent_object (scm_basic_make_class (scm_class_class, |
800 | name, | |
1afff620 | 801 | scm_list_1 (scm_class_top), |
80662eda MD |
802 | SCM_EOL)); |
803 | ||
804 | DEFVAR (name, scm_class_object); | |
805 | ||
806 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 807 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 808 | |
1afff620 KN |
809 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
810 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
811 | } |
812 | ||
813 | /******************************************************************************/ | |
814 | ||
398d8ee1 KN |
815 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
816 | (SCM obj), | |
6bcefd15 | 817 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 818 | #define FUNC_NAME s_scm_instance_p |
80662eda | 819 | { |
c312aca7 | 820 | return SCM_BOOL (SCM_INSTANCEP (obj)); |
80662eda | 821 | } |
398d8ee1 | 822 | #undef FUNC_NAME |
80662eda | 823 | |
80662eda MD |
824 | |
825 | /****************************************************************************** | |
6d77c894 | 826 | * |
80662eda MD |
827 | * Meta object accessors |
828 | * | |
829 | ******************************************************************************/ | |
398d8ee1 KN |
830 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
831 | (SCM obj), | |
6bcefd15 | 832 | "Return the class name of @var{obj}.") |
398d8ee1 | 833 | #define FUNC_NAME s_scm_class_name |
80662eda | 834 | { |
398d8ee1 | 835 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 836 | return scm_slot_ref (obj, sym_name); |
80662eda | 837 | } |
398d8ee1 | 838 | #undef FUNC_NAME |
80662eda | 839 | |
398d8ee1 KN |
840 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
841 | (SCM obj), | |
6bcefd15 | 842 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 843 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 844 | { |
398d8ee1 | 845 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 846 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 847 | } |
398d8ee1 | 848 | #undef FUNC_NAME |
80662eda | 849 | |
398d8ee1 KN |
850 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
851 | (SCM obj), | |
6bcefd15 | 852 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 853 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 854 | { |
398d8ee1 | 855 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 856 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 857 | } |
398d8ee1 | 858 | #undef FUNC_NAME |
80662eda | 859 | |
398d8ee1 KN |
860 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
861 | (SCM obj), | |
6bcefd15 | 862 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 863 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 864 | { |
398d8ee1 | 865 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 866 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 867 | } |
398d8ee1 | 868 | #undef FUNC_NAME |
80662eda | 869 | |
398d8ee1 KN |
870 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
871 | (SCM obj), | |
6bcefd15 | 872 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 873 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 874 | { |
398d8ee1 | 875 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 876 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 877 | } |
398d8ee1 | 878 | #undef FUNC_NAME |
80662eda | 879 | |
398d8ee1 KN |
880 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
881 | (SCM obj), | |
6bcefd15 | 882 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 883 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 884 | { |
398d8ee1 | 885 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 886 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 887 | } |
398d8ee1 | 888 | #undef FUNC_NAME |
80662eda | 889 | |
398d8ee1 KN |
890 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
891 | (SCM obj), | |
6bcefd15 | 892 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 893 | #define FUNC_NAME s_scm_class_slots |
80662eda | 894 | { |
398d8ee1 | 895 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 896 | return scm_slot_ref (obj, sym_slots); |
80662eda | 897 | } |
398d8ee1 | 898 | #undef FUNC_NAME |
80662eda | 899 | |
398d8ee1 KN |
900 | SCM_DEFINE (scm_class_environment, "class-environment", 1, 0, 0, |
901 | (SCM obj), | |
6bcefd15 | 902 | "Return the environment of the class @var{obj}.") |
398d8ee1 | 903 | #define FUNC_NAME s_scm_class_environment |
80662eda | 904 | { |
398d8ee1 | 905 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 906 | return scm_slot_ref(obj, sym_environment); |
80662eda | 907 | } |
398d8ee1 | 908 | #undef FUNC_NAME |
80662eda MD |
909 | |
910 | ||
398d8ee1 KN |
911 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
912 | (SCM obj), | |
6bcefd15 | 913 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 914 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 915 | { |
398d8ee1 | 916 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
917 | return scm_procedure_property (obj, scm_sym_name); |
918 | } | |
398d8ee1 | 919 | #undef FUNC_NAME |
80662eda | 920 | |
bbf8d523 MD |
921 | SCM_SYMBOL (sym_methods, "methods"); |
922 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
923 | SCM_SYMBOL (sym_extends, "extends"); | |
924 | ||
925 | static | |
926 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
927 | { | |
928 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
929 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
930 | while (!SCM_NULLP (gfs)) | |
931 | { | |
932 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
933 | gfs = SCM_CDR (gfs); | |
934 | } | |
935 | return method_lists; | |
936 | } | |
937 | ||
938 | static | |
939 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
940 | { | |
941 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
942 | { | |
943 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
944 | while (!SCM_NULLP (gfs)) | |
945 | { | |
946 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
947 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
948 | method_lists), | |
949 | SCM_CAR (gfs)); | |
950 | gfs = SCM_CDR (gfs); | |
951 | } | |
952 | } | |
953 | return method_lists; | |
954 | } | |
955 | ||
398d8ee1 KN |
956 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
957 | (SCM obj), | |
6bcefd15 | 958 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 959 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 960 | { |
bbf8d523 | 961 | SCM methods; |
398d8ee1 | 962 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
963 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
964 | methods = fold_downward_gf_methods (methods, obj); | |
965 | return scm_append (methods); | |
80662eda | 966 | } |
398d8ee1 | 967 | #undef FUNC_NAME |
80662eda | 968 | |
398d8ee1 KN |
969 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
970 | (SCM obj), | |
bb2c02f2 | 971 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 972 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 973 | { |
398d8ee1 | 974 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 975 | return scm_slot_ref (obj, scm_str2symbol ("generic-function")); |
80662eda | 976 | } |
398d8ee1 | 977 | #undef FUNC_NAME |
80662eda | 978 | |
398d8ee1 KN |
979 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
980 | (SCM obj), | |
6bcefd15 | 981 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 982 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 983 | { |
398d8ee1 | 984 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 985 | return scm_slot_ref (obj, scm_str2symbol ("specializers")); |
80662eda | 986 | } |
398d8ee1 | 987 | #undef FUNC_NAME |
80662eda | 988 | |
398d8ee1 KN |
989 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
990 | (SCM obj), | |
6bcefd15 | 991 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 992 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 993 | { |
398d8ee1 | 994 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 995 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 996 | } |
398d8ee1 | 997 | #undef FUNC_NAME |
80662eda | 998 | |
398d8ee1 KN |
999 | SCM_DEFINE (scm_accessor_method_slot_definition, "accessor-method-slot-definition", 1, 0, 0, |
1000 | (SCM obj), | |
6bcefd15 | 1001 | "Return the slot definition of the accessor @var{obj}.") |
398d8ee1 | 1002 | #define FUNC_NAME s_scm_accessor_method_slot_definition |
80662eda | 1003 | { |
398d8ee1 | 1004 | SCM_VALIDATE_ACCESSOR (1, obj); |
38ae064c | 1005 | return scm_slot_ref (obj, scm_str2symbol ("slot-definition")); |
398d8ee1 KN |
1006 | } |
1007 | #undef FUNC_NAME | |
80662eda | 1008 | |
5e03762c MD |
1009 | SCM_DEFINE (scm_sys_tag_body, "%tag-body", 1, 0, 0, |
1010 | (SCM body), | |
87e7741d | 1011 | "Internal GOOPS magic---don't use this function!") |
5e03762c MD |
1012 | #define FUNC_NAME s_scm_sys_tag_body |
1013 | { | |
1014 | return scm_cons (SCM_IM_LAMBDA, body); | |
87e7741d MD |
1015 | } |
1016 | #undef FUNC_NAME | |
80662eda MD |
1017 | |
1018 | /****************************************************************************** | |
1019 | * | |
1020 | * S l o t a c c e s s | |
1021 | * | |
1022 | ******************************************************************************/ | |
1023 | ||
398d8ee1 KN |
1024 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1025 | (), | |
6bcefd15 | 1026 | "Return the unbound value.") |
398d8ee1 | 1027 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1028 | { |
1029 | return SCM_GOOPS_UNBOUND; | |
1030 | } | |
398d8ee1 | 1031 | #undef FUNC_NAME |
80662eda | 1032 | |
398d8ee1 KN |
1033 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1034 | (SCM obj), | |
6bcefd15 | 1035 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1036 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1037 | { |
1038 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1039 | } | |
398d8ee1 | 1040 | #undef FUNC_NAME |
80662eda | 1041 | |
398d8ee1 KN |
1042 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1043 | (SCM value, SCM obj), | |
6bcefd15 MG |
1044 | "Return @var{value} if it is bound, and invoke the\n" |
1045 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1046 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1047 | { |
1048 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1049 | return CALL_GF1 ("slot-unbound", obj); | |
1050 | return value; | |
1051 | } | |
398d8ee1 | 1052 | #undef FUNC_NAME |
80662eda | 1053 | |
398d8ee1 KN |
1054 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1055 | (SCM obj, SCM index), | |
6bcefd15 MG |
1056 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1057 | "the value from @var{obj}.") | |
398d8ee1 | 1058 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda MD |
1059 | { |
1060 | SCM value = SCM_SLOT (obj, SCM_INUM (index)); | |
1061 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1062 | return CALL_GF1 ("slot-unbound", obj); | |
1063 | return value; | |
1064 | } | |
398d8ee1 | 1065 | #undef FUNC_NAME |
80662eda | 1066 | |
398d8ee1 KN |
1067 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1068 | (SCM obj, SCM index), | |
6bcefd15 | 1069 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1070 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1071 | { |
6b80d352 | 1072 | unsigned long int i; |
80662eda | 1073 | |
398d8ee1 KN |
1074 | SCM_VALIDATE_INSTANCE (1, obj); |
1075 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1076 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1077 | i = SCM_INUM (index); |
6b80d352 DH |
1078 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1079 | ||
58241edc | 1080 | return SCM_SLOT (obj, i); |
80662eda | 1081 | } |
ca83b028 DH |
1082 | #undef FUNC_NAME |
1083 | ||
398d8ee1 KN |
1084 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1085 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1086 | "Set the slot with index @var{index} in @var{obj} to\n" |
1087 | "@var{value}.") | |
398d8ee1 | 1088 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1089 | { |
6b80d352 | 1090 | unsigned long int i; |
80662eda | 1091 | |
398d8ee1 KN |
1092 | SCM_VALIDATE_INSTANCE (1, obj); |
1093 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1094 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1095 | i = SCM_INUM (index); |
6b80d352 DH |
1096 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1097 | ||
dcb410ec | 1098 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1099 | |
80662eda MD |
1100 | return SCM_UNSPECIFIED; |
1101 | } | |
ca83b028 DH |
1102 | #undef FUNC_NAME |
1103 | ||
80662eda | 1104 | |
3b88ed2a DH |
1105 | SCM_SYNTAX (s_atslot_ref, "@slot-ref", scm_i_makbimacro, scm_m_atslot_ref); |
1106 | SCM_SYNTAX (s_atslot_set_x, "@slot-set!", scm_i_makbimacro, scm_m_atslot_set_x); | |
a4aa2134 DH |
1107 | |
1108 | ||
80662eda MD |
1109 | /** Utilities **/ |
1110 | ||
1111 | /* In the future, this function will return the effective slot | |
1112 | * definition associated with SLOT_NAME. Now it just returns some of | |
1113 | * the information which will be stored in the effective slot | |
1114 | * definition. | |
1115 | */ | |
1116 | ||
1117 | static SCM | |
1118 | slot_definition_using_name (SCM class, SCM slot_name) | |
1119 | { | |
1120 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
6b80d352 | 1121 | for (; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
1122 | if (SCM_CAAR (slots) == slot_name) |
1123 | return SCM_CAR (slots); | |
1124 | return SCM_BOOL_F; | |
1125 | } | |
1126 | ||
1127 | static SCM | |
e81d98ec | 1128 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
80662eda MD |
1129 | { |
1130 | SCM access = SCM_CDDR (slotdef); | |
1131 | /* Two cases here: | |
1132 | * - access is an integer (the offset of this slot in the slots vector) | |
1133 | * - otherwise (car access) is the getter function to apply | |
23437298 | 1134 | */ |
80662eda MD |
1135 | if (SCM_INUMP (access)) |
1136 | return SCM_SLOT (obj, SCM_INUM (access)); | |
1137 | else | |
1138 | { | |
6d77c894 | 1139 | /* We must evaluate (apply (car access) (list obj)) |
80662eda MD |
1140 | * where (car access) is known to be a closure of arity 1 */ |
1141 | register SCM code, env; | |
1142 | ||
1143 | code = SCM_CAR (access); | |
1144 | if (!SCM_CLOSUREP (code)) | |
1145 | return SCM_SUBRF (code) (obj); | |
726d810a | 1146 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1147 | scm_list_1 (obj), |
80662eda MD |
1148 | SCM_ENV (code)); |
1149 | /* Evaluate the closure body */ | |
f9450cdb | 1150 | return scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1151 | } |
1152 | } | |
1153 | ||
1154 | static SCM | |
1155 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1156 | { | |
1157 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1158 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1159 | return get_slot_value (class, obj, slotdef); |
1160 | else | |
1161 | return CALL_GF3 ("slot-missing", class, obj, slot_name); | |
1162 | } | |
1163 | ||
1164 | static SCM | |
e81d98ec | 1165 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
80662eda MD |
1166 | { |
1167 | SCM access = SCM_CDDR (slotdef); | |
1168 | /* Two cases here: | |
1169 | * - access is an integer (the offset of this slot in the slots vector) | |
1170 | * - otherwise (cadr access) is the setter function to apply | |
1171 | */ | |
1172 | if (SCM_INUMP (access)) | |
dcb410ec | 1173 | SCM_SET_SLOT (obj, SCM_INUM (access), value); |
80662eda MD |
1174 | else |
1175 | { | |
1176 | /* We must evaluate (apply (cadr l) (list obj value)) | |
1177 | * where (cadr l) is known to be a closure of arity 2 */ | |
1178 | register SCM code, env; | |
1179 | ||
1180 | code = SCM_CADR (access); | |
1181 | if (!SCM_CLOSUREP (code)) | |
1182 | SCM_SUBRF (code) (obj, value); | |
1183 | else | |
1184 | { | |
726d810a | 1185 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1186 | scm_list_2 (obj, value), |
80662eda MD |
1187 | SCM_ENV (code)); |
1188 | /* Evaluate the closure body */ | |
f9450cdb | 1189 | scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1190 | } |
1191 | } | |
1192 | return SCM_UNSPECIFIED; | |
1193 | } | |
1194 | ||
1195 | static SCM | |
1196 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1197 | { | |
1198 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1199 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1200 | return set_slot_value (class, obj, slotdef, value); |
1201 | else | |
1202 | return CALL_GF4 ("slot-missing", class, obj, slot_name, value); | |
1203 | } | |
1204 | ||
1205 | static SCM | |
e81d98ec | 1206 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1207 | { |
1208 | register SCM l; | |
1209 | ||
729dbac3 DH |
1210 | for (l = SCM_ACCESSORS_OF (obj); !SCM_NULLP (l); l = SCM_CDR (l)) |
1211 | if (SCM_EQ_P (SCM_CAAR (l), slot_name)) | |
80662eda MD |
1212 | return SCM_BOOL_T; |
1213 | ||
1214 | return SCM_BOOL_F; | |
1215 | } | |
1216 | ||
80662eda MD |
1217 | /* ======================================== */ |
1218 | ||
23437298 DH |
1219 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1220 | (SCM class, SCM obj, SCM slot_name), | |
1221 | "") | |
1222 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1223 | { |
1224 | SCM res; | |
1225 | ||
398d8ee1 KN |
1226 | SCM_VALIDATE_CLASS (1, class); |
1227 | SCM_VALIDATE_INSTANCE (2, obj); | |
1228 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1229 | |
1230 | res = get_slot_value_using_name (class, obj, slot_name); | |
1231 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1232 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1233 | return res; | |
1234 | } | |
23437298 | 1235 | #undef FUNC_NAME |
80662eda | 1236 | |
23437298 DH |
1237 | |
1238 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1239 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1240 | "") | |
1241 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1242 | { |
398d8ee1 KN |
1243 | SCM_VALIDATE_CLASS (1, class); |
1244 | SCM_VALIDATE_INSTANCE (2, obj); | |
1245 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1246 | |
80662eda MD |
1247 | return set_slot_value_using_name (class, obj, slot_name, value); |
1248 | } | |
23437298 DH |
1249 | #undef FUNC_NAME |
1250 | ||
80662eda | 1251 | |
398d8ee1 KN |
1252 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1253 | (SCM class, SCM obj, SCM slot_name), | |
1254 | "") | |
1255 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1256 | { |
398d8ee1 KN |
1257 | SCM_VALIDATE_CLASS (1, class); |
1258 | SCM_VALIDATE_INSTANCE (2, obj); | |
1259 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1260 | |
1261 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1262 | ? SCM_BOOL_F | |
1263 | : SCM_BOOL_T); | |
1264 | } | |
398d8ee1 | 1265 | #undef FUNC_NAME |
80662eda | 1266 | |
398d8ee1 KN |
1267 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1268 | (SCM class, SCM obj, SCM slot_name), | |
1269 | "") | |
1270 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1271 | { | |
1272 | SCM_VALIDATE_CLASS (1, class); | |
1273 | SCM_VALIDATE_INSTANCE (2, obj); | |
1274 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1275 | return test_slot_existence (class, obj, slot_name); |
1276 | } | |
398d8ee1 | 1277 | #undef FUNC_NAME |
80662eda MD |
1278 | |
1279 | ||
1280 | /* ======================================== */ | |
1281 | ||
398d8ee1 KN |
1282 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1283 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1284 | "Return the value from @var{obj}'s slot with the name\n" |
1285 | "@var{slot_name}.") | |
398d8ee1 | 1286 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1287 | { |
1288 | SCM res, class; | |
1289 | ||
398d8ee1 | 1290 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1291 | TEST_CHANGE_CLASS (obj, class); |
1292 | ||
1293 | res = get_slot_value_using_name (class, obj, slot_name); | |
1294 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1295 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1296 | return res; | |
1297 | } | |
398d8ee1 | 1298 | #undef FUNC_NAME |
80662eda | 1299 | |
398d8ee1 KN |
1300 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1301 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1302 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1303 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1304 | { |
1305 | SCM class; | |
1306 | ||
398d8ee1 | 1307 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1308 | TEST_CHANGE_CLASS(obj, class); |
1309 | ||
1310 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1311 | } | |
398d8ee1 | 1312 | #undef FUNC_NAME |
80662eda | 1313 | |
398d8ee1 | 1314 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1315 | |
398d8ee1 KN |
1316 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1317 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1318 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1319 | "is bound.") | |
398d8ee1 | 1320 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1321 | { |
1322 | SCM class; | |
1323 | ||
398d8ee1 | 1324 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1325 | TEST_CHANGE_CLASS(obj, class); |
1326 | ||
1327 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1328 | obj, | |
1329 | slot_name)) | |
1330 | ? SCM_BOOL_F | |
1331 | : SCM_BOOL_T); | |
1332 | } | |
398d8ee1 | 1333 | #undef FUNC_NAME |
80662eda | 1334 | |
6d77c894 | 1335 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1336 | (SCM obj, SCM slot_name), |
6bcefd15 | 1337 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1338 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1339 | { |
1340 | SCM class; | |
1341 | ||
398d8ee1 KN |
1342 | SCM_VALIDATE_INSTANCE (1, obj); |
1343 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1344 | TEST_CHANGE_CLASS (obj, class); |
1345 | ||
1346 | return test_slot_existence (class, obj, slot_name); | |
1347 | } | |
398d8ee1 | 1348 | #undef FUNC_NAME |
80662eda MD |
1349 | |
1350 | ||
1351 | /****************************************************************************** | |
1352 | * | |
1353 | * %allocate-instance (the low level instance allocation primitive) | |
1354 | * | |
1355 | ******************************************************************************/ | |
1356 | ||
1357 | static void clear_method_cache (SCM); | |
1358 | ||
1359 | static SCM | |
c014a02e | 1360 | wrap_init (SCM class, SCM *m, long n) |
80662eda | 1361 | { |
c014a02e | 1362 | long i; |
6d77c894 | 1363 | |
80662eda MD |
1364 | /* Set all slots to unbound */ |
1365 | for (i = 0; i < n; i++) | |
1366 | m[i] = SCM_GOOPS_UNBOUND; | |
1367 | ||
228a24ef DH |
1368 | return scm_double_cell ((((scm_t_bits) SCM_STRUCT_DATA (class)) |
1369 | | scm_tc3_struct), | |
1370 | (scm_t_bits) m, 0, 0); | |
80662eda MD |
1371 | } |
1372 | ||
398d8ee1 KN |
1373 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1374 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1375 | "Create a new instance of class @var{class} and initialize it\n" |
1376 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1377 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda MD |
1378 | { |
1379 | SCM *m; | |
c014a02e | 1380 | long n; |
80662eda | 1381 | |
398d8ee1 | 1382 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1383 | |
1384 | /* Most instances */ | |
1385 | if (SCM_CLASS_FLAGS (class) & SCM_STRUCTF_LIGHT) | |
1386 | { | |
1387 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
4c9419ac | 1388 | m = (SCM *) scm_gc_malloc (n * sizeof (SCM), "struct"); |
80662eda MD |
1389 | return wrap_init (class, m, n); |
1390 | } | |
6d77c894 | 1391 | |
80662eda MD |
1392 | /* Foreign objects */ |
1393 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_FOREIGN) | |
1394 | return scm_make_foreign_object (class, initargs); | |
1395 | ||
1396 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
6d77c894 | 1397 | |
80662eda MD |
1398 | /* Entities */ |
1399 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_ENTITY) | |
1400 | { | |
4c9419ac MV |
1401 | m = (SCM *) scm_alloc_struct (n, scm_struct_entity_n_extra_words, |
1402 | "entity struct"); | |
80662eda MD |
1403 | m[scm_struct_i_setter] = SCM_BOOL_F; |
1404 | m[scm_struct_i_procedure] = SCM_BOOL_F; | |
1405 | /* Generic functions */ | |
1406 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) | |
1407 | { | |
1408 | SCM gf = wrap_init (class, m, n); | |
1409 | clear_method_cache (gf); | |
1410 | return gf; | |
1411 | } | |
1412 | else | |
1413 | return wrap_init (class, m, n); | |
1414 | } | |
6d77c894 | 1415 | |
80662eda MD |
1416 | /* Class objects */ |
1417 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_METACLASS) | |
1418 | { | |
c014a02e | 1419 | long i; |
80662eda MD |
1420 | |
1421 | /* allocate class object */ | |
1422 | SCM z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
1423 | ||
dcb410ec | 1424 | SCM_SET_SLOT (z, scm_si_print, SCM_GOOPS_UNBOUND); |
80662eda | 1425 | for (i = scm_si_goops_fields; i < n; i++) |
dcb410ec | 1426 | SCM_SET_SLOT (z, i, SCM_GOOPS_UNBOUND); |
80662eda MD |
1427 | |
1428 | if (SCM_SUBCLASSP (class, scm_class_entity_class)) | |
1429 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY); | |
1430 | else if (SCM_SUBCLASSP (class, scm_class_operator_class)) | |
1431 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR); | |
1432 | ||
1433 | return z; | |
1434 | } | |
6d77c894 | 1435 | |
80662eda MD |
1436 | /* Non-light instances */ |
1437 | { | |
4c9419ac | 1438 | m = (SCM *) scm_alloc_struct (n, scm_struct_n_extra_words, "heavy struct"); |
80662eda MD |
1439 | return wrap_init (class, m, n); |
1440 | } | |
1441 | } | |
398d8ee1 | 1442 | #undef FUNC_NAME |
80662eda | 1443 | |
398d8ee1 KN |
1444 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1445 | (SCM obj, SCM setter), | |
1446 | "") | |
1447 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1448 | { |
c312aca7 | 1449 | SCM_ASSERT (SCM_STRUCTP (obj) |
80662eda MD |
1450 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
1451 | || SCM_I_ENTITYP (obj)), | |
1452 | obj, | |
1453 | SCM_ARG1, | |
398d8ee1 | 1454 | FUNC_NAME); |
80662eda | 1455 | if (SCM_I_ENTITYP (obj)) |
322ec19d | 1456 | SCM_SET_ENTITY_SETTER (obj, setter); |
80662eda MD |
1457 | else |
1458 | SCM_OPERATOR_CLASS (obj)->setter = setter; | |
1459 | return SCM_UNSPECIFIED; | |
1460 | } | |
398d8ee1 | 1461 | #undef FUNC_NAME |
80662eda MD |
1462 | |
1463 | /****************************************************************************** | |
1464 | * | |
1465 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1466 | * |
80662eda MD |
1467 | ******************************************************************************/ |
1468 | ||
398d8ee1 KN |
1469 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1470 | (SCM old, SCM new), | |
1471 | "") | |
1472 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1473 | { |
398d8ee1 KN |
1474 | SCM_VALIDATE_INSTANCE (1, old); |
1475 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1476 | |
6d77c894 | 1477 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1478 | * scratch the old value with new to be correct with GC. |
1479 | * See "Class redefinition protocol above". | |
1480 | */ | |
1481 | SCM_REDEFER_INTS; | |
1482 | { | |
1483 | SCM car = SCM_CAR (old); | |
1484 | SCM cdr = SCM_CDR (old); | |
1485 | SCM_SETCAR (old, SCM_CAR (new)); | |
1486 | SCM_SETCDR (old, SCM_CDR (new)); | |
1487 | SCM_SETCAR (new, car); | |
1488 | SCM_SETCDR (new, cdr); | |
1489 | } | |
1490 | SCM_REALLOW_INTS; | |
1491 | return SCM_UNSPECIFIED; | |
1492 | } | |
398d8ee1 | 1493 | #undef FUNC_NAME |
80662eda | 1494 | |
398d8ee1 KN |
1495 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1496 | (SCM old, SCM new), | |
1497 | "") | |
1498 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1499 | { |
398d8ee1 KN |
1500 | SCM_VALIDATE_CLASS (1, old); |
1501 | SCM_VALIDATE_CLASS (2, new); | |
80662eda MD |
1502 | |
1503 | SCM_REDEFER_INTS; | |
1504 | { | |
1505 | SCM car = SCM_CAR (old); | |
1506 | SCM cdr = SCM_CDR (old); | |
1507 | SCM_SETCAR (old, SCM_CAR (new)); | |
1508 | SCM_SETCDR (old, SCM_CDR (new)); | |
729dbac3 | 1509 | SCM_STRUCT_DATA (old)[scm_vtable_index_vtable] = SCM_UNPACK (old); |
80662eda MD |
1510 | SCM_SETCAR (new, car); |
1511 | SCM_SETCDR (new, cdr); | |
729dbac3 | 1512 | SCM_STRUCT_DATA (new)[scm_vtable_index_vtable] = SCM_UNPACK (new); |
80662eda MD |
1513 | } |
1514 | SCM_REALLOW_INTS; | |
1515 | return SCM_UNSPECIFIED; | |
1516 | } | |
398d8ee1 | 1517 | #undef FUNC_NAME |
80662eda | 1518 | |
398d8ee1 KN |
1519 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1520 | (SCM class), | |
1521 | "") | |
1522 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1523 | { |
398d8ee1 | 1524 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1525 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1526 | return SCM_UNSPECIFIED; | |
1527 | } | |
398d8ee1 | 1528 | #undef FUNC_NAME |
80662eda MD |
1529 | |
1530 | /* When instances change class, they finally get a new body, but | |
1531 | * before that, they go through purgatory in hell. Odd as it may | |
1532 | * seem, this data structure saves us from eternal suffering in | |
1533 | * infinite recursions. | |
1534 | */ | |
1535 | ||
92c2555f | 1536 | static scm_t_bits **hell; |
c014a02e ML |
1537 | static long n_hell = 1; /* one place for the evil one himself */ |
1538 | static long hell_size = 4; | |
2132f0d2 | 1539 | static SCM hell_mutex; |
80662eda | 1540 | |
c014a02e | 1541 | static long |
80662eda MD |
1542 | burnin (SCM o) |
1543 | { | |
c014a02e | 1544 | long i; |
80662eda | 1545 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1546 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1547 | return i; |
1548 | return 0; | |
1549 | } | |
1550 | ||
1551 | static void | |
1552 | go_to_hell (void *o) | |
1553 | { | |
6b80d352 | 1554 | SCM obj = SCM_PACK ((scm_t_bits) o); |
2132f0d2 | 1555 | scm_lock_mutex (hell_mutex); |
80662eda MD |
1556 | if (n_hell == hell_size) |
1557 | { | |
c014a02e | 1558 | long new_size = 2 * hell_size; |
4c9419ac | 1559 | hell = scm_realloc (hell, new_size); |
80662eda MD |
1560 | hell_size = new_size; |
1561 | } | |
6b80d352 | 1562 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1563 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1564 | } |
1565 | ||
1566 | static void | |
1567 | go_to_heaven (void *o) | |
1568 | { | |
2132f0d2 | 1569 | scm_lock_mutex (hell_mutex); |
6b80d352 | 1570 | hell[burnin (SCM_PACK ((scm_t_bits) o))] = hell[--n_hell]; |
2132f0d2 | 1571 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1572 | } |
1573 | ||
6b80d352 DH |
1574 | |
1575 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1576 | ||
80662eda MD |
1577 | static SCM |
1578 | purgatory (void *args) | |
1579 | { | |
6d77c894 | 1580 | return scm_apply_0 (GETVAR (scm_sym_change_class), |
6b80d352 | 1581 | SCM_PACK ((scm_t_bits) args)); |
80662eda MD |
1582 | } |
1583 | ||
38d8927c MD |
1584 | /* This function calls the generic function change-class for all |
1585 | * instances which aren't currently undergoing class change. | |
1586 | */ | |
1587 | ||
80662eda | 1588 | void |
e81d98ec | 1589 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1590 | { |
1591 | if (!burnin (obj)) | |
1592 | scm_internal_dynamic_wind (go_to_hell, purgatory, go_to_heaven, | |
6b80d352 DH |
1593 | (void *) SCM_UNPACK (scm_list_2 (obj, new_class)), |
1594 | (void *) SCM_UNPACK (obj)); | |
80662eda MD |
1595 | } |
1596 | ||
1597 | /****************************************************************************** | |
1598 | * | |
6d77c894 TTN |
1599 | * GGGG FFFFF |
1600 | * G F | |
1601 | * G GG FFF | |
1602 | * G G F | |
80662eda MD |
1603 | * GGG E N E R I C F U N C T I O N S |
1604 | * | |
1605 | * This implementation provides | |
1606 | * - generic functions (with class specializers) | |
1607 | * - multi-methods | |
6d77c894 | 1608 | * - next-method |
80662eda MD |
1609 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1610 | * | |
1611 | ******************************************************************************/ | |
1612 | ||
1613 | SCM_KEYWORD (k_name, "name"); | |
1614 | ||
1615 | SCM_SYMBOL (sym_no_method, "no-method"); | |
1616 | ||
1617 | static SCM list_of_no_method; | |
1618 | ||
63c1872f | 1619 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 1620 | |
a4aa2134 | 1621 | |
80662eda MD |
1622 | SCM |
1623 | scm_make_method_cache (SCM gf) | |
1624 | { | |
1afff620 KN |
1625 | return scm_list_5 (SCM_IM_DISPATCH, |
1626 | scm_sym_args, | |
1627 | SCM_MAKINUM (1), | |
1628 | scm_c_make_vector (SCM_INITIAL_MCACHE_SIZE, | |
1629 | list_of_no_method), | |
1630 | gf); | |
80662eda MD |
1631 | } |
1632 | ||
1633 | static void | |
1634 | clear_method_cache (SCM gf) | |
1635 | { | |
322ec19d ML |
1636 | SCM cache = scm_make_method_cache (gf); |
1637 | SCM_SET_ENTITY_PROCEDURE (gf, cache); | |
dcb410ec | 1638 | SCM_SET_SLOT (gf, scm_si_used_by, SCM_BOOL_F); |
80662eda MD |
1639 | } |
1640 | ||
398d8ee1 KN |
1641 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1642 | (SCM gf), | |
1643 | "") | |
1644 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda MD |
1645 | { |
1646 | SCM used_by; | |
25ba37df | 1647 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
80662eda | 1648 | used_by = SCM_SLOT (gf, scm_si_used_by); |
6b80d352 | 1649 | if (!SCM_FALSEP (used_by)) |
80662eda MD |
1650 | { |
1651 | SCM methods = SCM_SLOT (gf, scm_si_methods); | |
c312aca7 | 1652 | for (; SCM_CONSP (used_by); used_by = SCM_CDR (used_by)) |
80662eda MD |
1653 | scm_sys_invalidate_method_cache_x (SCM_CAR (used_by)); |
1654 | clear_method_cache (gf); | |
c312aca7 | 1655 | for (; SCM_CONSP (methods); methods = SCM_CDR (methods)) |
dcb410ec | 1656 | SCM_SET_SLOT (SCM_CAR (methods), scm_si_code_table, SCM_EOL); |
80662eda MD |
1657 | } |
1658 | { | |
55c4a132 | 1659 | SCM n = SCM_SLOT (gf, scm_si_n_specialized); |
80662eda | 1660 | /* The sign of n is a flag indicating rest args. */ |
55c4a132 | 1661 | SCM_SET_MCACHE_N_SPECIALIZED (SCM_ENTITY_PROCEDURE (gf), n); |
80662eda MD |
1662 | } |
1663 | return SCM_UNSPECIFIED; | |
1664 | } | |
398d8ee1 | 1665 | #undef FUNC_NAME |
80662eda | 1666 | |
398d8ee1 KN |
1667 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1668 | (SCM proc), | |
1669 | "") | |
1670 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1671 | { |
6b80d352 | 1672 | SCM_ASSERT (!SCM_FALSEP (scm_procedure_p (proc)), |
398d8ee1 | 1673 | proc, SCM_ARG1, FUNC_NAME); |
80662eda MD |
1674 | return (scm_subr_p (proc) && SCM_SUBR_GENERIC (proc) |
1675 | ? SCM_BOOL_T | |
1676 | : SCM_BOOL_F); | |
1677 | } | |
398d8ee1 | 1678 | #undef FUNC_NAME |
80662eda | 1679 | |
398d8ee1 KN |
1680 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1681 | (SCM subrs), | |
1682 | "") | |
1683 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1684 | { |
6b80d352 DH |
1685 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
1686 | while (!SCM_NULLP (subrs)) | |
80662eda MD |
1687 | { |
1688 | SCM subr = SCM_CAR (subrs); | |
1689 | SCM_ASSERT (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr), | |
398d8ee1 | 1690 | subr, SCM_ARGn, FUNC_NAME); |
80662eda | 1691 | *SCM_SUBR_GENERIC (subr) |
1afff620 KN |
1692 | = scm_make (scm_list_3 (scm_class_generic, |
1693 | k_name, | |
1694 | SCM_SNAME (subr))); | |
80662eda MD |
1695 | subrs = SCM_CDR (subrs); |
1696 | } | |
1697 | return SCM_UNSPECIFIED; | |
1698 | } | |
398d8ee1 | 1699 | #undef FUNC_NAME |
80662eda | 1700 | |
398d8ee1 KN |
1701 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1702 | (SCM subr), | |
1703 | "") | |
1704 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda MD |
1705 | { |
1706 | if (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr)) | |
1707 | { | |
a48d60b1 MD |
1708 | if (!*SCM_SUBR_GENERIC (subr)) |
1709 | scm_enable_primitive_generic_x (scm_list_1 (subr)); | |
1710 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1711 | } |
db4b4ca6 | 1712 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1713 | } |
398d8ee1 | 1714 | #undef FUNC_NAME |
80662eda | 1715 | |
a48d60b1 MD |
1716 | typedef struct t_extension { |
1717 | struct t_extension *next; | |
1718 | SCM extended; | |
1719 | SCM extension; | |
1720 | } t_extension; | |
1721 | ||
1722 | static t_extension *extensions = 0; | |
1723 | ||
1724 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
1725 | ||
1726 | void | |
1727 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1728 | { | |
1729 | if (goops_loaded_p) | |
1730 | { | |
1731 | SCM gf, gext; | |
1732 | if (!*SCM_SUBR_GENERIC (extended)) | |
1733 | scm_enable_primitive_generic_x (scm_list_1 (extended)); | |
1734 | gf = *SCM_SUBR_GENERIC (extended); | |
1735 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1736 | gf, | |
1737 | SCM_SNAME (extension)); | |
1738 | *SCM_SUBR_GENERIC (extension) = gext; | |
1739 | } | |
1740 | else | |
1741 | { | |
1742 | t_extension *e = scm_malloc (sizeof (t_extension)); | |
1743 | t_extension **loc = &extensions; | |
1744 | /* Make sure that extensions are placed before their own | |
1745 | * extensions in the extensions list. O(N^2) algorithm, but | |
1746 | * extensions of primitive generics are rare. | |
1747 | */ | |
1748 | while (*loc && extension != (*loc)->extended) | |
1749 | loc = &(*loc)->next; | |
1750 | e->next = *loc; | |
1751 | e->extended = extended; | |
1752 | e->extension = extension; | |
1753 | *loc = e; | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | static void | |
1758 | setup_extended_primitive_generics () | |
1759 | { | |
1760 | while (extensions) | |
1761 | { | |
1762 | t_extension *e = extensions; | |
1763 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1764 | extensions = e->next; | |
1765 | free (e); | |
1766 | } | |
1767 | } | |
1768 | ||
80662eda | 1769 | /****************************************************************************** |
6d77c894 | 1770 | * |
80662eda | 1771 | * Protocol for calling a generic fumction |
6d77c894 | 1772 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1773 | * for efficiency reasons): |
1774 | * | |
1775 | * + apply-generic (gf args) | |
1776 | * + compute-applicable-methods (gf args ...) | |
1777 | * + sort-applicable-methods (methods args) | |
1778 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1779 | * |
1780 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1781 | * method. Applying a next-method will call apply-next-method which in |
1782 | * turn will call apply again to call effectively the following method. | |
1783 | * | |
1784 | ******************************************************************************/ | |
1785 | ||
1786 | static int | |
1787 | applicablep (SCM actual, SCM formal) | |
1788 | { | |
79a3dafe DH |
1789 | /* We already know that the cpl is well formed. */ |
1790 | return !SCM_FALSEP (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); | |
80662eda MD |
1791 | } |
1792 | ||
1793 | static int | |
34d19ef6 | 1794 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1795 | { |
1796 | register SCM s1, s2; | |
c014a02e | 1797 | register long i; |
6d77c894 TTN |
1798 | /* |
1799 | * Note: | |
1800 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1801 | * other when we have a dotted parameter list). For instance, with the call |
1802 | * (M 1) | |
1803 | * with | |
1804 | * (define-method M (a . l) ....) | |
6d77c894 | 1805 | * (define-method M (a) ....) |
80662eda MD |
1806 | * |
1807 | * we consider that the second method is more specific. | |
1808 | * | |
1809 | * BTW, targs is an array of types. We don't need it's size since | |
1810 | * we already know that m1 and m2 are applicable (no risk to go past | |
1811 | * the end of this array). | |
1812 | * | |
1813 | */ | |
34d19ef6 | 1814 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
80662eda MD |
1815 | if (SCM_NULLP(s1)) return 1; |
1816 | if (SCM_NULLP(s2)) return 0; | |
1817 | if (SCM_CAR(s1) != SCM_CAR(s2)) { | |
1818 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); | |
6d77c894 | 1819 | |
dcb410ec | 1820 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
80662eda MD |
1821 | if (cs1 == SCM_CAR(l)) |
1822 | return 1; | |
1823 | if (cs2 == SCM_CAR(l)) | |
1824 | return 0; | |
1825 | } | |
1826 | return 0;/* should not occur! */ | |
1827 | } | |
1828 | } | |
1829 | return 0; /* should not occur! */ | |
1830 | } | |
1831 | ||
1832 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1833 | ||
1834 | static SCM | |
c014a02e | 1835 | scm_i_vector2list (SCM l, long len) |
80662eda | 1836 | { |
c014a02e | 1837 | long j; |
00ffa0e7 | 1838 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1839 | |
80662eda | 1840 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
34d19ef6 | 1841 | SCM_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1842 | } |
1843 | return z; | |
1844 | } | |
1845 | ||
1846 | static SCM | |
34d19ef6 | 1847 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1848 | { |
c014a02e | 1849 | long i, j, incr; |
80662eda MD |
1850 | SCM *v, vector = SCM_EOL; |
1851 | SCM buffer[BUFFSIZE]; | |
1852 | SCM save = method_list; | |
1853 | ||
1854 | /* For reasonably sized method_lists we can try to avoid all the | |
1855 | * consing and reorder the list in place... | |
1856 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1857 | */ | |
1858 | if (size <= BUFFSIZE) | |
1859 | { | |
1860 | for (i = 0; i < size; i++) | |
1861 | { | |
1862 | buffer[i] = SCM_CAR (method_list); | |
1863 | method_list = SCM_CDR (method_list); | |
1864 | } | |
1865 | v = buffer; | |
6d77c894 | 1866 | } |
80662eda MD |
1867 | else |
1868 | { | |
1869 | /* Too many elements in method_list to keep everything locally */ | |
1870 | vector = scm_i_vector2list (save, size); | |
34d19ef6 HWN |
1871 | |
1872 | /* | |
1873 | This is a new vector. Don't worry about the write barrier. | |
1874 | We're not allocating elements in this routine, so this should | |
1875 | pose no problem. | |
1876 | */ | |
bbf8d523 | 1877 | v = SCM_WRITABLE_VELTS (vector); |
80662eda MD |
1878 | } |
1879 | ||
6d77c894 | 1880 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
1881 | * small vectors (which is probably mostly the case when we have to |
1882 | * sort a list of applicable methods). | |
1883 | */ | |
1884 | for (incr = size / 2; incr; incr /= 2) | |
1885 | { | |
1886 | for (i = incr; i < size; i++) | |
1887 | { | |
1888 | for (j = i - incr; j >= 0; j -= incr) | |
1889 | { | |
1890 | if (more_specificp (v[j], v[j+incr], targs)) | |
1891 | break; | |
1892 | else | |
1893 | { | |
1894 | SCM tmp = v[j + incr]; | |
1895 | v[j + incr] = v[j]; | |
1896 | v[j] = tmp; | |
1897 | } | |
1898 | } | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | if (size <= BUFFSIZE) | |
1903 | { | |
1904 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
1905 | for (i = 0, method_list = save; i < size; i++, v++) | |
1906 | { | |
1907 | SCM_SETCAR (method_list, *v); | |
1908 | method_list = SCM_CDR (method_list); | |
1909 | } | |
1910 | return save; | |
1911 | } | |
6d77c894 | 1912 | /* If we are here, that's that we did it the hard way... */ |
80662eda MD |
1913 | return scm_vector_to_list (vector); |
1914 | } | |
1915 | ||
1916 | SCM | |
c014a02e | 1917 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 1918 | { |
c014a02e ML |
1919 | register long i; |
1920 | long count = 0; | |
80662eda MD |
1921 | SCM l, fl, applicable = SCM_EOL; |
1922 | SCM save = args; | |
34d19ef6 HWN |
1923 | SCM buffer[BUFFSIZE]; |
1924 | SCM const *types; | |
1925 | SCM *p; | |
1926 | SCM tmp = SCM_EOL; | |
6d77c894 | 1927 | |
80662eda MD |
1928 | /* Build the list of arguments types */ |
1929 | if (len >= BUFFSIZE) { | |
00ffa0e7 | 1930 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); |
80662eda MD |
1931 | /* NOTE: Using pointers to malloced memory won't work if we |
1932 | 1. have preemtive threading, and, | |
1933 | 2. have a GC which moves objects. */ | |
34d19ef6 HWN |
1934 | types = p = SCM_WRITABLE_VELTS(tmp); |
1935 | ||
1936 | /* | |
1937 | note that we don't have to work to reset the generation | |
1938 | count. TMP is a new vector anyway, and it is found | |
1939 | conservatively. | |
1940 | */ | |
80662eda MD |
1941 | } |
1942 | else | |
1943 | types = p = buffer; | |
6d77c894 TTN |
1944 | |
1945 | for ( ; !SCM_NULLP (args); args = SCM_CDR (args)) | |
80662eda | 1946 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 1947 | |
80662eda | 1948 | /* Build a list of all applicable methods */ |
bbf8d523 | 1949 | for (l = scm_generic_function_methods (gf); !SCM_NULLP (l); l = SCM_CDR (l)) |
80662eda MD |
1950 | { |
1951 | fl = SPEC_OF (SCM_CAR (l)); | |
1952 | /* Only accept accessors which match exactly in first arg. */ | |
1953 | if (SCM_ACCESSORP (SCM_CAR (l)) | |
6b80d352 | 1954 | && (SCM_NULLP (fl) || types[0] != SCM_CAR (fl))) |
80662eda MD |
1955 | continue; |
1956 | for (i = 0; ; i++, fl = SCM_CDR (fl)) | |
1957 | { | |
c312aca7 | 1958 | if (SCM_INSTANCEP (fl) |
80662eda MD |
1959 | /* We have a dotted argument list */ |
1960 | || (i >= len && SCM_NULLP (fl))) | |
1961 | { /* both list exhausted */ | |
1962 | applicable = scm_cons (SCM_CAR (l), applicable); | |
1963 | count += 1; | |
1964 | break; | |
1965 | } | |
1966 | if (i >= len | |
1967 | || SCM_NULLP (fl) | |
1968 | || !applicablep (types[i], SCM_CAR (fl))) | |
1969 | break; | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | if (count == 0) | |
1974 | { | |
1975 | if (find_method_p) | |
1976 | return SCM_BOOL_F; | |
1977 | CALL_GF2 ("no-applicable-method", gf, save); | |
1978 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ | |
1979 | return SCM_BOOL_F; | |
1980 | } | |
34d19ef6 | 1981 | |
afc8e572 | 1982 | scm_remember_upto_here_1 (tmp); |
80662eda MD |
1983 | return (count == 1 |
1984 | ? applicable | |
1985 | : sort_applicable_methods (applicable, count, types)); | |
1986 | } | |
1987 | ||
1988 | #if 0 | |
1989 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
1990 | #endif | |
1991 | ||
1992 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
1993 | ||
1994 | SCM | |
1995 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 1996 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 1997 | { |
c014a02e | 1998 | long n; |
398d8ee1 | 1999 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2000 | n = scm_ilength (args); |
398d8ee1 | 2001 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
2002 | return scm_compute_applicable_methods (gf, args, n, 1); |
2003 | } | |
398d8ee1 | 2004 | #undef FUNC_NAME |
80662eda | 2005 | |
86d31dfe | 2006 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
9a441ddb | 2007 | 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 | 2008 | |
80662eda MD |
2009 | static void |
2010 | lock_cache_mutex (void *m) | |
2011 | { | |
6b80d352 | 2012 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2013 | scm_lock_mutex (mutex); |
2014 | } | |
2015 | ||
2016 | static void | |
2017 | unlock_cache_mutex (void *m) | |
2018 | { | |
6b80d352 | 2019 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2020 | scm_unlock_mutex (mutex); |
2021 | } | |
80662eda MD |
2022 | |
2023 | static SCM | |
2024 | call_memoize_method (void *a) | |
2025 | { | |
6b80d352 | 2026 | SCM args = SCM_PACK ((scm_t_bits) a); |
80662eda MD |
2027 | SCM gf = SCM_CAR (args); |
2028 | SCM x = SCM_CADR (args); | |
2029 | /* First check if another thread has inserted a method between | |
2030 | * the cache miss and locking the mutex. | |
2031 | */ | |
2032 | SCM cmethod = scm_mcache_lookup_cmethod (x, SCM_CDDR (args)); | |
6b80d352 | 2033 | if (!SCM_FALSEP (cmethod)) |
80662eda MD |
2034 | return cmethod; |
2035 | /*fixme* Use scm_apply */ | |
2036 | return CALL_GF3 ("memoize-method!", gf, SCM_CDDR (args), x); | |
2037 | } | |
2038 | ||
2039 | SCM | |
2040 | scm_memoize_method (SCM x, SCM args) | |
2041 | { | |
2042 | SCM gf = SCM_CAR (scm_last_pair (x)); | |
6b80d352 DH |
2043 | return scm_internal_dynamic_wind ( |
2044 | lock_cache_mutex, | |
2045 | call_memoize_method, | |
2046 | unlock_cache_mutex, | |
2047 | (void *) SCM_UNPACK (scm_cons2 (gf, x, args)), | |
2048 | (void *) SCM_UNPACK (SCM_SLOT (gf, scm_si_cache_mutex))); | |
80662eda MD |
2049 | } |
2050 | ||
2051 | /****************************************************************************** | |
2052 | * | |
2053 | * A simple make (which will be redefined later in Scheme) | |
2054 | * This version handles only creation of gf, methods and classes (no instances) | |
2055 | * | |
6d77c894 | 2056 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2057 | * no precaution is taken to be efficient. |
2058 | * | |
2059 | ******************************************************************************/ | |
2060 | ||
2061 | SCM_KEYWORD (k_setter, "setter"); | |
2062 | SCM_KEYWORD (k_specializers, "specializers"); | |
2063 | SCM_KEYWORD (k_procedure, "procedure"); | |
2064 | SCM_KEYWORD (k_dsupers, "dsupers"); | |
2065 | SCM_KEYWORD (k_slots, "slots"); | |
2066 | SCM_KEYWORD (k_gf, "generic-function"); | |
2067 | ||
398d8ee1 KN |
2068 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2069 | (SCM args), | |
27c37006 | 2070 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2071 | "all necessary initialization information.") |
398d8ee1 | 2072 | #define FUNC_NAME s_scm_make |
80662eda MD |
2073 | { |
2074 | SCM class, z; | |
c014a02e | 2075 | long len = scm_ilength (args); |
80662eda MD |
2076 | |
2077 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2078 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2079 | |
2080 | class = SCM_CAR(args); | |
2081 | args = SCM_CDR(args); | |
2082 | ||
f8af5c6d | 2083 | if (class == scm_class_generic || class == scm_class_accessor) |
80662eda | 2084 | { |
80662eda | 2085 | z = scm_make_struct (class, SCM_INUM0, |
bbf8d523 | 2086 | scm_list_5 (SCM_EOL, |
1afff620 KN |
2087 | SCM_INUM0, |
2088 | SCM_BOOL_F, | |
bbf8d523 MD |
2089 | scm_make_mutex (), |
2090 | SCM_EOL)); | |
80662eda MD |
2091 | scm_set_procedure_property_x (z, scm_sym_name, |
2092 | scm_get_keyword (k_name, | |
2093 | args, | |
2094 | SCM_BOOL_F)); | |
2095 | clear_method_cache (z); | |
f8af5c6d | 2096 | if (class == scm_class_accessor) |
80662eda MD |
2097 | { |
2098 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
6b80d352 | 2099 | if (!SCM_FALSEP (setter)) |
80662eda MD |
2100 | scm_sys_set_object_setter_x (z, setter); |
2101 | } | |
2102 | } | |
2103 | else | |
2104 | { | |
2105 | z = scm_sys_allocate_instance (class, args); | |
2106 | ||
2107 | if (class == scm_class_method | |
2108 | || class == scm_class_simple_method | |
f8af5c6d | 2109 | || class == scm_class_accessor_method) |
80662eda | 2110 | { |
6d77c894 | 2111 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2112 | scm_i_get_keyword (k_gf, |
2113 | args, | |
2114 | len - 1, | |
2115 | SCM_BOOL_F, | |
dcb410ec | 2116 | FUNC_NAME)); |
6d77c894 | 2117 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2118 | scm_i_get_keyword (k_specializers, |
2119 | args, | |
2120 | len - 1, | |
2121 | SCM_EOL, | |
dcb410ec | 2122 | FUNC_NAME)); |
6d77c894 | 2123 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2124 | scm_i_get_keyword (k_procedure, |
2125 | args, | |
2126 | len - 1, | |
2127 | SCM_EOL, | |
dcb410ec DH |
2128 | FUNC_NAME)); |
2129 | SCM_SET_SLOT (z, scm_si_code_table, SCM_EOL); | |
80662eda MD |
2130 | } |
2131 | else | |
2132 | { | |
2133 | /* In all the others case, make a new class .... No instance here */ | |
6d77c894 | 2134 | SCM_SET_SLOT (z, scm_si_name, |
80662eda MD |
2135 | scm_i_get_keyword (k_name, |
2136 | args, | |
2137 | len - 1, | |
38ae064c | 2138 | scm_str2symbol ("???"), |
dcb410ec | 2139 | FUNC_NAME)); |
6d77c894 | 2140 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2141 | scm_i_get_keyword (k_dsupers, |
2142 | args, | |
2143 | len - 1, | |
2144 | SCM_EOL, | |
dcb410ec | 2145 | FUNC_NAME)); |
6d77c894 | 2146 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2147 | scm_i_get_keyword (k_slots, |
2148 | args, | |
2149 | len - 1, | |
2150 | SCM_EOL, | |
dcb410ec | 2151 | FUNC_NAME)); |
80662eda MD |
2152 | } |
2153 | } | |
2154 | return z; | |
2155 | } | |
398d8ee1 | 2156 | #undef FUNC_NAME |
80662eda | 2157 | |
398d8ee1 KN |
2158 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2159 | (SCM l), | |
2160 | "") | |
2161 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2162 | { |
2163 | SCM gf; | |
c014a02e | 2164 | long len = scm_ilength (l); |
80662eda MD |
2165 | |
2166 | if (len == 0) | |
398d8ee1 | 2167 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2168 | |
2169 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2170 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2171 | if (SCM_NULLP (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2172 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2173 | |
2174 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2175 | } | |
398d8ee1 | 2176 | #undef FUNC_NAME |
80662eda | 2177 | |
398d8ee1 KN |
2178 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2179 | (SCM m1, SCM m2, SCM targs), | |
2180 | "") | |
2181 | #define FUNC_NAME s_scm_sys_method_more_specific_p | |
80662eda MD |
2182 | { |
2183 | SCM l, v; | |
c014a02e | 2184 | long i, len; |
80662eda | 2185 | |
398d8ee1 KN |
2186 | SCM_VALIDATE_METHOD (1, m1); |
2187 | SCM_VALIDATE_METHOD (2, m2); | |
2188 | SCM_ASSERT ((len = scm_ilength (targs)) != -1, targs, SCM_ARG3, FUNC_NAME); | |
80662eda MD |
2189 | |
2190 | /* Verify that all the arguments of targs are classes and place them in a vector*/ | |
00ffa0e7 | 2191 | v = scm_c_make_vector (len, SCM_EOL); |
80662eda | 2192 | |
6b80d352 | 2193 | for (i = 0, l = targs; !SCM_NULLP (l); i++, l = SCM_CDR (l)) { |
398d8ee1 | 2194 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); |
34d19ef6 | 2195 | SCM_VECTOR_SET (v, i, SCM_CAR(l)); |
80662eda MD |
2196 | } |
2197 | return more_specificp (m1, m2, SCM_VELTS(v)) ? SCM_BOOL_T: SCM_BOOL_F; | |
2198 | } | |
398d8ee1 | 2199 | #undef FUNC_NAME |
6d77c894 TTN |
2200 | |
2201 | ||
80662eda MD |
2202 | |
2203 | /****************************************************************************** | |
2204 | * | |
6d77c894 | 2205 | * Initializations |
80662eda MD |
2206 | * |
2207 | ******************************************************************************/ | |
2208 | ||
74b6d6e4 MD |
2209 | static void |
2210 | fix_cpl (SCM c, SCM before, SCM after) | |
2211 | { | |
2212 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2213 | SCM ls = scm_c_memq (after, cpl); | |
2214 | SCM tail = scm_delq1_x (before, SCM_CDR (ls)); | |
2215 | if (SCM_FALSEP (ls)) | |
2216 | /* if this condition occurs, fix_cpl should not be applied this way */ | |
2217 | abort (); | |
2218 | SCM_SETCAR (ls, before); | |
2219 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2220 | { | |
2221 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2222 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2223 | SCM g_n_s = compute_getters_n_setters (slots); | |
2224 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2225 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2226 | } | |
2227 | } | |
2228 | ||
80662eda MD |
2229 | |
2230 | static void | |
2231 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2232 | { | |
38ae064c | 2233 | SCM tmp = scm_str2symbol (name); |
6d77c894 | 2234 | |
80662eda MD |
2235 | *var = scm_permanent_object (scm_basic_make_class (meta, |
2236 | tmp, | |
2237 | SCM_CONSP (super) | |
2238 | ? super | |
1afff620 | 2239 | : scm_list_1 (super), |
80662eda MD |
2240 | slots)); |
2241 | DEFVAR(tmp, *var); | |
2242 | } | |
2243 | ||
2244 | ||
2245 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2246 | ||
2247 | static void | |
2248 | create_standard_classes (void) | |
2249 | { | |
2250 | SCM slots; | |
6d77c894 TTN |
2251 | SCM method_slots = scm_list_4 (scm_str2symbol ("generic-function"), |
2252 | scm_str2symbol ("specializers"), | |
6b80d352 | 2253 | sym_procedure, |
1afff620 KN |
2254 | scm_str2symbol ("code-table")); |
2255 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("slot-definition"), | |
2256 | k_init_keyword, | |
2257 | k_slot_definition)); | |
1afff620 | 2258 | SCM mutex_slot = scm_list_1 (scm_str2symbol ("make-mutex")); |
bbf8d523 | 2259 | SCM gf_slots = scm_list_5 (scm_str2symbol ("methods"), |
1afff620 KN |
2260 | scm_list_3 (scm_str2symbol ("n-specialized"), |
2261 | k_init_value, | |
2262 | SCM_INUM0), | |
2263 | scm_list_3 (scm_str2symbol ("used-by"), | |
2264 | k_init_value, | |
2265 | SCM_BOOL_F), | |
2266 | scm_list_3 (scm_str2symbol ("cache-mutex"), | |
2267 | k_init_thunk, | |
2268 | scm_closure (scm_list_2 (SCM_EOL, | |
2269 | mutex_slot), | |
bbf8d523 MD |
2270 | SCM_EOL)), |
2271 | scm_list_3 (scm_str2symbol ("extended-by"), | |
2272 | k_init_value, | |
2273 | SCM_EOL)); | |
2274 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("extends"), | |
2275 | k_init_value, | |
2276 | SCM_EOL)); | |
80662eda MD |
2277 | /* Foreign class slot classes */ |
2278 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2279 | scm_class_class, scm_class_top, SCM_EOL); | |
2280 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2281 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2282 | make_stdcls (&scm_class_opaque, "<opaque-slot>", | |
2283 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2284 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2285 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2286 | make_stdcls (&scm_class_self, "<self-slot>", | |
2287 | scm_class_class, | |
74b6d6e4 | 2288 | scm_class_read_only, |
80662eda MD |
2289 | SCM_EOL); |
2290 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", | |
2291 | scm_class_class, | |
1afff620 | 2292 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda MD |
2293 | SCM_EOL); |
2294 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", | |
2295 | scm_class_class, | |
1afff620 | 2296 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2297 | SCM_EOL); |
2298 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2299 | scm_class_class, scm_class_protected, SCM_EOL); | |
2300 | make_stdcls (&scm_class_int, "<int-slot>", | |
2301 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2302 | make_stdcls (&scm_class_float, "<float-slot>", | |
2303 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2304 | make_stdcls (&scm_class_double, "<double-slot>", | |
2305 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2306 | ||
2307 | /* Continue initialization of class <class> */ | |
6d77c894 | 2308 | |
80662eda | 2309 | slots = build_class_class_slots (); |
dcb410ec DH |
2310 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2311 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2312 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2313 | compute_getters_n_setters (slots)); | |
6d77c894 | 2314 | |
80662eda MD |
2315 | make_stdcls (&scm_class_foreign_class, "<foreign-class>", |
2316 | scm_class_class, scm_class_class, | |
1afff620 KN |
2317 | scm_list_2 (scm_list_3 (scm_str2symbol ("constructor"), |
2318 | k_class, | |
2319 | scm_class_opaque), | |
2320 | scm_list_3 (scm_str2symbol ("destructor"), | |
2321 | k_class, | |
2322 | scm_class_opaque))); | |
80662eda MD |
2323 | make_stdcls (&scm_class_foreign_object, "<foreign-object>", |
2324 | scm_class_foreign_class, scm_class_object, SCM_EOL); | |
2325 | SCM_SET_CLASS_FLAGS (scm_class_foreign_object, SCM_CLASSF_FOREIGN); | |
2326 | ||
2327 | /* scm_class_generic functions classes */ | |
2328 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2329 | scm_class_class, scm_class_class, SCM_EOL); | |
2330 | make_stdcls (&scm_class_entity_class, "<entity-class>", | |
2331 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2332 | make_stdcls (&scm_class_operator_class, "<operator-class>", | |
2333 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2334 | make_stdcls (&scm_class_operator_with_setter_class, | |
2335 | "<operator-with-setter-class>", | |
2336 | scm_class_class, scm_class_operator_class, SCM_EOL); | |
2337 | make_stdcls (&scm_class_method, "<method>", | |
2338 | scm_class_class, scm_class_object, method_slots); | |
2339 | make_stdcls (&scm_class_simple_method, "<simple-method>", | |
2340 | scm_class_class, scm_class_method, SCM_EOL); | |
2341 | SCM_SET_CLASS_FLAGS (scm_class_simple_method, SCM_CLASSF_SIMPLE_METHOD); | |
f8af5c6d | 2342 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
80662eda | 2343 | scm_class_class, scm_class_simple_method, amethod_slots); |
f8af5c6d | 2344 | SCM_SET_CLASS_FLAGS (scm_class_accessor_method, SCM_CLASSF_ACCESSOR_METHOD); |
74b6d6e4 MD |
2345 | make_stdcls (&scm_class_applicable, "<applicable>", |
2346 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda | 2347 | make_stdcls (&scm_class_entity, "<entity>", |
74b6d6e4 MD |
2348 | scm_class_entity_class, |
2349 | scm_list_2 (scm_class_object, scm_class_applicable), | |
2350 | SCM_EOL); | |
80662eda MD |
2351 | make_stdcls (&scm_class_entity_with_setter, "<entity-with-setter>", |
2352 | scm_class_entity_class, scm_class_entity, SCM_EOL); | |
2353 | make_stdcls (&scm_class_generic, "<generic>", | |
2354 | scm_class_entity_class, scm_class_entity, gf_slots); | |
2355 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 | 2356 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
f8af5c6d | 2357 | scm_class_entity_class, scm_class_generic, egf_slots); |
bbf8d523 | 2358 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2359 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
2360 | scm_class_entity_class, | |
1afff620 | 2361 | scm_list_2 (scm_class_generic, scm_class_entity_with_setter), |
80662eda | 2362 | SCM_EOL); |
80662eda | 2363 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d MD |
2364 | make_stdcls (&scm_class_accessor, "<accessor>", |
2365 | scm_class_entity_class, scm_class_generic_with_setter, SCM_EOL); | |
2366 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 MD |
2367 | make_stdcls (&scm_class_extended_generic_with_setter, |
2368 | "<extended-generic-with-setter>", | |
2369 | scm_class_entity_class, | |
74b6d6e4 MD |
2370 | scm_list_2 (scm_class_generic_with_setter, |
2371 | scm_class_extended_generic), | |
bbf8d523 MD |
2372 | SCM_EOL); |
2373 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2374 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 MD |
2375 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
2376 | scm_class_entity_class, | |
2377 | scm_list_2 (scm_class_accessor, | |
2378 | scm_class_extended_generic_with_setter), | |
2379 | SCM_EOL); | |
2380 | fix_cpl (scm_class_extended_accessor, | |
2381 | scm_class_extended_generic, scm_class_generic); | |
2382 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); | |
80662eda MD |
2383 | |
2384 | /* Primitive types classes */ | |
2385 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2386 | scm_class_class, scm_class_top, SCM_EOL); | |
2387 | make_stdcls (&scm_class_char, "<char>", | |
2388 | scm_class_class, scm_class_top, SCM_EOL); | |
2389 | make_stdcls (&scm_class_list, "<list>", | |
2390 | scm_class_class, scm_class_top, SCM_EOL); | |
2391 | make_stdcls (&scm_class_pair, "<pair>", | |
2392 | scm_class_class, scm_class_list, SCM_EOL); | |
2393 | make_stdcls (&scm_class_null, "<null>", | |
2394 | scm_class_class, scm_class_list, SCM_EOL); | |
2395 | make_stdcls (&scm_class_string, "<string>", | |
2396 | scm_class_class, scm_class_top, SCM_EOL); | |
2397 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2398 | scm_class_class, scm_class_top, SCM_EOL); | |
2399 | make_stdcls (&scm_class_vector, "<vector>", | |
2400 | scm_class_class, scm_class_top, SCM_EOL); | |
2401 | make_stdcls (&scm_class_number, "<number>", | |
2402 | scm_class_class, scm_class_top, SCM_EOL); | |
2403 | make_stdcls (&scm_class_complex, "<complex>", | |
2404 | scm_class_class, scm_class_number, SCM_EOL); | |
2405 | make_stdcls (&scm_class_real, "<real>", | |
2406 | scm_class_class, scm_class_complex, SCM_EOL); | |
2407 | make_stdcls (&scm_class_integer, "<integer>", | |
2408 | scm_class_class, scm_class_real, SCM_EOL); | |
2409 | make_stdcls (&scm_class_keyword, "<keyword>", | |
2410 | scm_class_class, scm_class_top, SCM_EOL); | |
2411 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2412 | scm_class_class, scm_class_top, SCM_EOL); | |
2413 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2414 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2415 | make_stdcls (&scm_class_procedure_with_setter, "<procedure-with-setter>", |
2416 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2417 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", | |
2418 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2419 | make_stdcls (&scm_class_port, "<port>", | |
2420 | scm_class_class, scm_class_top, SCM_EOL); | |
2421 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2422 | scm_class_class, scm_class_port, SCM_EOL); | |
2423 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2424 | scm_class_class, scm_class_port, SCM_EOL); | |
2425 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2426 | scm_class_class, | |
1afff620 | 2427 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2428 | SCM_EOL); |
2429 | } | |
2430 | ||
2431 | /********************************************************************** | |
2432 | * | |
2433 | * Smob classes | |
2434 | * | |
2435 | **********************************************************************/ | |
2436 | ||
2437 | static SCM | |
da0e6c2b | 2438 | make_class_from_template (char const *template, char const *type_name, SCM supers, int applicablep) |
80662eda MD |
2439 | { |
2440 | SCM class, name; | |
2441 | if (type_name) | |
2442 | { | |
2443 | char buffer[100]; | |
2444 | sprintf (buffer, template, type_name); | |
38ae064c | 2445 | name = scm_str2symbol (buffer); |
80662eda MD |
2446 | } |
2447 | else | |
2448 | name = SCM_GOOPS_UNBOUND; | |
2449 | ||
74b6d6e4 MD |
2450 | class = scm_permanent_object (scm_basic_make_class (applicablep |
2451 | ? scm_class_procedure_class | |
2452 | : scm_class_class, | |
80662eda MD |
2453 | name, |
2454 | supers, | |
2455 | SCM_EOL)); | |
2456 | ||
2457 | /* Only define name if doesn't already exist. */ | |
2458 | if (!SCM_GOOPS_UNBOUNDP (name) | |
fdc28395 | 2459 | && SCM_FALSEP (scm_call_2 (scm_goops_lookup_closure, name, SCM_BOOL_F))) |
0ba8a0a5 | 2460 | DEFVAR (name, class); |
80662eda MD |
2461 | return class; |
2462 | } | |
2463 | ||
2464 | SCM | |
da0e6c2b | 2465 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda MD |
2466 | { |
2467 | return make_class_from_template ("<%s>", | |
2468 | type_name, | |
74b6d6e4 MD |
2469 | scm_list_1 (applicablep |
2470 | ? scm_class_applicable | |
2471 | : scm_class_top), | |
2472 | applicablep); | |
2473 | } | |
2474 | ||
2475 | void | |
2476 | scm_i_inherit_applicable (SCM c) | |
2477 | { | |
2478 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2479 | { | |
2480 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2481 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2482 | /* patch scm_class_applicable into direct-supers */ | |
2483 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
2484 | if (SCM_FALSEP (top)) | |
2485 | dsupers = scm_append (scm_list_2 (dsupers, | |
2486 | scm_list_1 (scm_class_applicable))); | |
2487 | else | |
2488 | { | |
2489 | SCM_SETCAR (top, scm_class_applicable); | |
2490 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2491 | } | |
2492 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2493 | /* patch scm_class_applicable into cpl */ | |
2494 | top = scm_c_memq (scm_class_top, cpl); | |
2495 | if (SCM_FALSEP (top)) | |
2496 | abort (); | |
2497 | else | |
2498 | { | |
2499 | SCM_SETCAR (top, scm_class_applicable); | |
2500 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2501 | } | |
2502 | /* add class to direct-subclasses of scm_class_applicable */ | |
2503 | SCM_SET_SLOT (scm_class_applicable, | |
2504 | scm_si_direct_subclasses, | |
2505 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2506 | scm_si_direct_subclasses))); | |
2507 | } | |
80662eda MD |
2508 | } |
2509 | ||
2510 | static void | |
2511 | create_smob_classes (void) | |
2512 | { | |
c014a02e | 2513 | long i; |
80662eda | 2514 | |
67329a9e | 2515 | scm_smob_class = (SCM *) scm_malloc (255 * sizeof (SCM)); |
80662eda MD |
2516 | for (i = 0; i < 255; ++i) |
2517 | scm_smob_class[i] = 0; | |
2518 | ||
80662eda | 2519 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; |
6d77c894 | 2520 | |
80662eda MD |
2521 | for (i = 0; i < scm_numsmob; ++i) |
2522 | if (!scm_smob_class[i]) | |
74b6d6e4 MD |
2523 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2524 | scm_smobs[i].apply != 0); | |
80662eda MD |
2525 | } |
2526 | ||
2527 | void | |
c014a02e | 2528 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2529 | { |
2530 | SCM c, class = make_class_from_template ("<%s-port>", | |
2531 | type_name, | |
74b6d6e4 MD |
2532 | scm_list_1 (scm_class_port), |
2533 | 0); | |
80662eda MD |
2534 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2535 | = make_class_from_template ("<%s-input-port>", | |
2536 | type_name, | |
74b6d6e4 MD |
2537 | scm_list_2 (class, scm_class_input_port), |
2538 | 0); | |
80662eda MD |
2539 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2540 | = make_class_from_template ("<%s-output-port>", | |
2541 | type_name, | |
74b6d6e4 MD |
2542 | scm_list_2 (class, scm_class_output_port), |
2543 | 0); | |
80662eda MD |
2544 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2545 | = c | |
2546 | = make_class_from_template ("<%s-input-output-port>", | |
2547 | type_name, | |
74b6d6e4 MD |
2548 | scm_list_2 (class, scm_class_input_output_port), |
2549 | 0); | |
80662eda | 2550 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2551 | SCM_SET_SLOT (c, scm_si_cpl, |
2552 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2553 | } |
2554 | ||
2555 | static void | |
2556 | create_port_classes (void) | |
2557 | { | |
c014a02e | 2558 | long i; |
80662eda | 2559 | |
67329a9e | 2560 | scm_port_class = (SCM *) scm_malloc (3 * 256 * sizeof (SCM)); |
80662eda MD |
2561 | for (i = 0; i < 3 * 256; ++i) |
2562 | scm_port_class[i] = 0; | |
2563 | ||
2564 | for (i = 0; i < scm_numptob; ++i) | |
2565 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2566 | } | |
2567 | ||
2568 | static SCM | |
74b6d6e4 MD |
2569 | make_struct_class (void *closure SCM_UNUSED, |
2570 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2571 | { |
6b80d352 | 2572 | if (!SCM_FALSEP (SCM_STRUCT_TABLE_NAME (data))) |
80662eda MD |
2573 | SCM_SET_STRUCT_TABLE_CLASS (data, |
2574 | scm_make_extended_class | |
74b6d6e4 MD |
2575 | (SCM_SYMBOL_CHARS (SCM_STRUCT_TABLE_NAME (data)), |
2576 | SCM_CLASS_FLAGS (vtable) & SCM_CLASSF_OPERATOR)); | |
80662eda MD |
2577 | return SCM_UNSPECIFIED; |
2578 | } | |
2579 | ||
2580 | static void | |
2581 | create_struct_classes (void) | |
2582 | { | |
2583 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, scm_struct_table); | |
2584 | } | |
2585 | ||
2586 | /********************************************************************** | |
2587 | * | |
2588 | * C interface | |
2589 | * | |
2590 | **********************************************************************/ | |
2591 | ||
2592 | void | |
2593 | scm_load_goops () | |
2594 | { | |
2595 | if (!goops_loaded_p) | |
abd28220 | 2596 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2597 | } |
2598 | ||
e11208ca | 2599 | |
80662eda MD |
2600 | SCM |
2601 | scm_make_foreign_object (SCM class, SCM initargs) | |
e11208ca | 2602 | #define FUNC_NAME s_scm_make |
80662eda MD |
2603 | { |
2604 | void * (*constructor) (SCM) | |
2605 | = (void * (*) (SCM)) SCM_SLOT (class, scm_si_constructor); | |
e11208ca | 2606 | if (constructor == 0) |
1afff620 | 2607 | SCM_MISC_ERROR ("Can't make instances of class ~S", scm_list_1 (class)); |
80662eda MD |
2608 | return scm_wrap_object (class, constructor (initargs)); |
2609 | } | |
e11208ca DH |
2610 | #undef FUNC_NAME |
2611 | ||
80662eda MD |
2612 | |
2613 | static size_t | |
2614 | scm_free_foreign_object (SCM *class, SCM *data) | |
2615 | { | |
2616 | size_t (*destructor) (void *) | |
2617 | = (size_t (*) (void *)) class[scm_si_destructor]; | |
2618 | return destructor (data); | |
2619 | } | |
2620 | ||
2621 | SCM | |
2622 | scm_make_class (SCM meta, char *s_name, SCM supers, size_t size, | |
2623 | void * (*constructor) (SCM initargs), | |
2624 | size_t (*destructor) (void *)) | |
2625 | { | |
2626 | SCM name, class; | |
38ae064c | 2627 | name = scm_str2symbol (s_name); |
6b80d352 | 2628 | if (SCM_NULLP (supers)) |
1afff620 | 2629 | supers = scm_list_1 (scm_class_foreign_object); |
80662eda MD |
2630 | class = scm_basic_basic_make_class (meta, name, supers, SCM_EOL); |
2631 | scm_sys_inherit_magic_x (class, supers); | |
2632 | ||
2633 | if (destructor != 0) | |
2634 | { | |
dcb410ec | 2635 | SCM_SET_SLOT (class, scm_si_destructor, (SCM) destructor); |
80662eda MD |
2636 | SCM_SET_CLASS_DESTRUCTOR (class, scm_free_foreign_object); |
2637 | } | |
2638 | else if (size > 0) | |
2639 | { | |
2640 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
2641 | SCM_SET_CLASS_INSTANCE_SIZE (class, size); | |
2642 | } | |
6d77c894 | 2643 | |
dcb410ec DH |
2644 | SCM_SET_SLOT (class, scm_si_layout, scm_str2symbol ("")); |
2645 | SCM_SET_SLOT (class, scm_si_constructor, (SCM) constructor); | |
80662eda MD |
2646 | |
2647 | return class; | |
2648 | } | |
2649 | ||
2650 | SCM_SYMBOL (sym_o, "o"); | |
2651 | SCM_SYMBOL (sym_x, "x"); | |
2652 | ||
2653 | SCM_KEYWORD (k_accessor, "accessor"); | |
2654 | SCM_KEYWORD (k_getter, "getter"); | |
2655 | ||
2656 | static SCM | |
e81d98ec | 2657 | default_setter (SCM obj SCM_UNUSED, SCM c SCM_UNUSED) |
80662eda MD |
2658 | { |
2659 | scm_misc_error ("slot-set!", "read-only slot", SCM_EOL); | |
2660 | return 0; | |
2661 | } | |
2662 | ||
2663 | void | |
2664 | scm_add_slot (SCM class, char *slot_name, SCM slot_class, | |
2665 | SCM (*getter) (SCM obj), | |
2666 | SCM (*setter) (SCM obj, SCM x), | |
2667 | char *accessor_name) | |
2668 | { | |
2669 | { | |
9a441ddb MV |
2670 | SCM get = scm_c_make_subr ("goops:get", scm_tc7_subr_1, getter); |
2671 | SCM set = scm_c_make_subr ("goops:set", scm_tc7_subr_2, | |
2672 | setter ? setter : default_setter); | |
1afff620 KN |
2673 | SCM getm = scm_closure (scm_list_2 (scm_list_1 (sym_o), |
2674 | scm_list_2 (get, sym_o)), | |
80662eda | 2675 | SCM_EOL); |
1afff620 KN |
2676 | SCM setm = scm_closure (scm_list_2 (scm_list_2 (sym_o, sym_x), |
2677 | scm_list_3 (set, sym_o, sym_x)), | |
80662eda MD |
2678 | SCM_EOL); |
2679 | { | |
38ae064c DH |
2680 | SCM name = scm_str2symbol (slot_name); |
2681 | SCM aname = scm_str2symbol (accessor_name); | |
80662eda | 2682 | SCM gf = scm_ensure_accessor (aname); |
1afff620 KN |
2683 | SCM slot = scm_list_5 (name, |
2684 | k_class, | |
2685 | slot_class, | |
2686 | setter ? k_accessor : k_getter, | |
2687 | gf); | |
f8af5c6d | 2688 | scm_add_method (gf, scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2689 | k_specializers, |
2690 | scm_list_1 (class), | |
2691 | k_procedure, | |
2692 | getm))); | |
80662eda | 2693 | scm_add_method (scm_setter (gf), |
f8af5c6d | 2694 | scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2695 | k_specializers, |
2696 | scm_list_2 (class, scm_class_top), | |
2697 | k_procedure, | |
2698 | setm))); | |
80662eda | 2699 | DEFVAR (aname, gf); |
6d77c894 | 2700 | |
dcb410ec | 2701 | SCM_SET_SLOT (class, scm_si_slots, |
1afff620 KN |
2702 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_slots), |
2703 | scm_list_1 (slot)))); | |
21ab2aeb MD |
2704 | { |
2705 | SCM n = SCM_SLOT (class, scm_si_nfields); | |
2706 | SCM gns = scm_list_n (name, SCM_BOOL_F, get, set, n, SCM_MAKINUM (1)); | |
2707 | SCM_SET_SLOT (class, scm_si_getters_n_setters, | |
2708 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_getters_n_setters), | |
2709 | scm_list_1 (gns)))); | |
2710 | SCM_SET_SLOT (class, scm_si_nfields, SCM_MAKINUM (SCM_INUM (n) + 1)); | |
2711 | } | |
80662eda MD |
2712 | } |
2713 | } | |
80662eda MD |
2714 | } |
2715 | ||
2716 | SCM | |
2717 | scm_wrap_object (SCM class, void *data) | |
2718 | { | |
228a24ef DH |
2719 | return scm_double_cell (SCM_UNPACK (SCM_CDR (class)) | scm_tc3_struct, |
2720 | (scm_t_bits) data, | |
2721 | 0, 0); | |
80662eda MD |
2722 | } |
2723 | ||
2724 | SCM scm_components; | |
2725 | ||
2726 | SCM | |
2727 | scm_wrap_component (SCM class, SCM container, void *data) | |
2728 | { | |
2729 | SCM obj = scm_wrap_object (class, data); | |
2730 | SCM handle = scm_hash_fn_create_handle_x (scm_components, | |
2731 | obj, | |
2732 | SCM_BOOL_F, | |
2733 | scm_struct_ihashq, | |
2734 | scm_sloppy_assq, | |
2735 | 0); | |
2736 | SCM_SETCDR (handle, container); | |
2737 | return obj; | |
2738 | } | |
2739 | ||
2740 | SCM | |
2741 | scm_ensure_accessor (SCM name) | |
2742 | { | |
fdc28395 | 2743 | SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); |
f8af5c6d | 2744 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2745 | { |
1afff620 | 2746 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2747 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2748 | k_name, name, k_setter, gf)); |
80662eda MD |
2749 | } |
2750 | return gf; | |
2751 | } | |
2752 | ||
2753 | SCM_SYMBOL (sym_internal_add_method_x, "internal-add-method!"); | |
2754 | ||
2755 | void | |
2756 | scm_add_method (SCM gf, SCM m) | |
2757 | { | |
1afff620 | 2758 | scm_eval (scm_list_3 (sym_internal_add_method_x, gf, m), scm_module_goops); |
80662eda MD |
2759 | } |
2760 | ||
2761 | #ifdef GUILE_DEBUG | |
2762 | /* | |
2763 | * Debugging utilities | |
2764 | */ | |
2765 | ||
398d8ee1 KN |
2766 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2767 | (SCM obj), | |
6bcefd15 | 2768 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2769 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2770 | { |
25ba37df | 2771 | return SCM_BOOL (SCM_PUREGENERICP (obj)); |
80662eda | 2772 | } |
398d8ee1 | 2773 | #undef FUNC_NAME |
80662eda MD |
2774 | |
2775 | #endif /* GUILE_DEBUG */ | |
2776 | ||
2777 | /* | |
2778 | * Initialization | |
2779 | */ | |
2780 | ||
398d8ee1 KN |
2781 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2782 | (), | |
6bcefd15 MG |
2783 | "Announce that GOOPS is loaded and perform initialization\n" |
2784 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2785 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2786 | { |
2787 | goops_loaded_p = 1; | |
86d31dfe MV |
2788 | var_compute_applicable_methods = |
2789 | scm_sym2var (sym_compute_applicable_methods, scm_goops_lookup_closure, | |
2790 | SCM_BOOL_F); | |
a48d60b1 | 2791 | setup_extended_primitive_generics (); |
80662eda MD |
2792 | return SCM_UNSPECIFIED; |
2793 | } | |
398d8ee1 | 2794 | #undef FUNC_NAME |
80662eda MD |
2795 | |
2796 | SCM scm_module_goops; | |
2797 | ||
abd28220 MV |
2798 | SCM |
2799 | scm_init_goops_builtins (void) | |
80662eda | 2800 | { |
abd28220 | 2801 | scm_module_goops = scm_current_module (); |
80662eda MD |
2802 | scm_goops_lookup_closure = scm_module_lookup_closure (scm_module_goops); |
2803 | ||
6d77c894 | 2804 | /* Not really necessary right now, but who knows... |
0ba8a0a5 MV |
2805 | */ |
2806 | scm_permanent_object (scm_module_goops); | |
2807 | scm_permanent_object (scm_goops_lookup_closure); | |
2808 | ||
80662eda MD |
2809 | scm_components = scm_permanent_object (scm_make_weak_key_hash_table |
2810 | (SCM_MAKINUM (37))); | |
2811 | ||
2812 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); | |
2813 | ||
2814 | #include "libguile/goops.x" | |
2815 | ||
1afff620 | 2816 | list_of_no_method = scm_permanent_object (scm_list_1 (sym_no_method)); |
80662eda | 2817 | |
4c9419ac | 2818 | hell = scm_malloc (hell_size); |
2132f0d2 | 2819 | hell_mutex = scm_permanent_object (scm_make_mutex ()); |
80662eda MD |
2820 | |
2821 | create_basic_classes (); | |
2822 | create_standard_classes (); | |
2823 | create_smob_classes (); | |
2824 | create_struct_classes (); | |
2825 | create_port_classes (); | |
2826 | ||
2827 | { | |
38ae064c | 2828 | SCM name = scm_str2symbol ("no-applicable-method"); |
80662eda | 2829 | scm_no_applicable_method |
1afff620 KN |
2830 | = scm_permanent_object (scm_make (scm_list_3 (scm_class_generic, |
2831 | k_name, | |
2832 | name))); | |
80662eda MD |
2833 | DEFVAR (name, scm_no_applicable_method); |
2834 | } | |
abd28220 MV |
2835 | |
2836 | return SCM_UNSPECIFIED; | |
80662eda MD |
2837 | } |
2838 | ||
2839 | void | |
abd28220 | 2840 | scm_init_goops () |
80662eda | 2841 | { |
9a441ddb MV |
2842 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2843 | scm_init_goops_builtins); | |
80662eda | 2844 | } |
23437298 DH |
2845 | |
2846 | /* | |
2847 | Local Variables: | |
2848 | c-file-style: "gnu" | |
2849 | End: | |
2850 | */ |