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bbf8d523 | 1 | /* Copyright (C) 1998,1999,2000,2001, 2002, 2003 Free Software Foundation, Inc. |
6d77c894 | 2 | * |
80662eda MD |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
6d77c894 | 7 | * |
80662eda MD |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
6d77c894 | 12 | * |
80662eda MD |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
41 | \f | |
42 | ||
43 | /* This software is a derivative work of other copyrighted softwares; the | |
44 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
45 | * | |
46 | * This file is based upon stklos.c from the STk distribution by | |
47 | * Erick Gallesio <eg@unice.fr>. | |
48 | */ | |
49 | ||
50 | #include <stdio.h> | |
51 | ||
52 | #include "libguile/_scm.h" | |
53 | #include "libguile/alist.h" | |
54 | #include "libguile/debug.h" | |
55 | #include "libguile/dynl.h" | |
56 | #include "libguile/dynwind.h" | |
57 | #include "libguile/eval.h" | |
58 | #include "libguile/hashtab.h" | |
59 | #include "libguile/keywords.h" | |
60 | #include "libguile/macros.h" | |
61 | #include "libguile/modules.h" | |
62 | #include "libguile/objects.h" | |
63 | #include "libguile/ports.h" | |
64 | #include "libguile/procprop.h" | |
65 | #include "libguile/random.h" | |
fdc28395 | 66 | #include "libguile/root.h" |
80662eda MD |
67 | #include "libguile/smob.h" |
68 | #include "libguile/strings.h" | |
69 | #include "libguile/strports.h" | |
70 | #include "libguile/vectors.h" | |
71 | #include "libguile/weaks.h" | |
72 | ||
ca83b028 | 73 | #include "libguile/validate.h" |
80662eda MD |
74 | #include "libguile/goops.h" |
75 | ||
80662eda MD |
76 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
77 | ||
34d19ef6 | 78 | #define DEFVAR(v, val) \ |
1afff620 KN |
79 | { scm_eval (scm_list_3 (scm_sym_define_public, (v), (val)), \ |
80 | scm_module_goops); } | |
80662eda MD |
81 | /* Temporary hack until we get the new module system */ |
82 | /*fixme* Should optimize by keeping track of the variable object itself */ | |
fdc28395 KN |
83 | #define GETVAR(v) (SCM_VARIABLE_REF (scm_call_2 (scm_goops_lookup_closure, \ |
84 | (v), SCM_BOOL_F))) | |
80662eda MD |
85 | |
86 | /* Fixme: Should use already interned symbols */ | |
34d19ef6 | 87 | #define CALL_GF1(name, a) (scm_call_1 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 88 | a)) |
34d19ef6 | 89 | #define CALL_GF2(name, a, b) (scm_call_2 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 90 | a, b)) |
34d19ef6 | 91 | #define CALL_GF3(name, a, b, c) (scm_call_3 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 92 | a, b, c)) |
34d19ef6 | 93 | #define CALL_GF4(name, a, b, c, d) (scm_call_4 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 94 | a, b, c, d)) |
80662eda MD |
95 | |
96 | /* Class redefinition protocol: | |
97 | ||
98 | A class is represented by a heap header h1 which points to a | |
99 | malloc:ed memory block m1. | |
100 | ||
101 | When a new version of a class is created, a new header h2 and | |
102 | memory block m2 are allocated. The headers h1 and h2 then switch | |
103 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
104 | bound to h1 will point to the new class at the same time as h2 will | |
105 | be a handle which the GC will us to free m1. | |
106 | ||
107 | The `redefined' slot of m1 will be set to point to h1. An old | |
108 | instance will have it's class pointer (the CAR of the heap header) | |
109 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates | |
110 | the class modification and the new class pointer can be found via | |
111 | h1. | |
112 | */ | |
113 | ||
80662eda MD |
114 | /* The following definition is located in libguile/objects.h: |
115 | #define SCM_OBJ_CLASS_REDEF(x) (SCM_STRUCT_VTABLE_DATA(x)[scm_si_redefined]) | |
116 | */ | |
117 | ||
118 | #define TEST_CHANGE_CLASS(obj, class) \ | |
119 | { \ | |
120 | class = SCM_CLASS_OF (obj); \ | |
121 | if (SCM_OBJ_CLASS_REDEF (obj) != SCM_BOOL_F) \ | |
38d8927c | 122 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj)); \ |
80662eda MD |
123 | } |
124 | ||
125 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
126 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
127 | ||
128 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
129 | #define SCM_GOOPS_UNBOUNDP(x) ((x) == SCM_GOOPS_UNBOUND) | |
130 | ||
131 | static int goops_loaded_p = 0; | |
92c2555f | 132 | static scm_t_rstate *goops_rstate; |
80662eda MD |
133 | |
134 | static SCM scm_goops_lookup_closure; | |
135 | ||
136 | /* Some classes are defined in libguile/objects.c. */ | |
137 | SCM scm_class_top, scm_class_object, scm_class_class; | |
74b6d6e4 | 138 | SCM scm_class_applicable; |
80662eda | 139 | SCM scm_class_entity, scm_class_entity_with_setter; |
bbf8d523 | 140 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 141 | SCM scm_class_accessor; |
bbf8d523 | 142 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 143 | SCM scm_class_extended_accessor; |
bbf8d523 | 144 | SCM scm_class_method; |
f8af5c6d | 145 | SCM scm_class_simple_method, scm_class_accessor_method; |
80662eda MD |
146 | SCM scm_class_procedure_class; |
147 | SCM scm_class_operator_class, scm_class_operator_with_setter_class; | |
148 | SCM scm_class_entity_class; | |
149 | SCM scm_class_number, scm_class_list; | |
150 | SCM scm_class_keyword; | |
151 | SCM scm_class_port, scm_class_input_output_port; | |
152 | SCM scm_class_input_port, scm_class_output_port; | |
153 | SCM scm_class_foreign_class, scm_class_foreign_object; | |
154 | SCM scm_class_foreign_slot; | |
155 | SCM scm_class_self, scm_class_protected; | |
156 | SCM scm_class_opaque, scm_class_read_only; | |
157 | SCM scm_class_protected_opaque, scm_class_protected_read_only; | |
158 | SCM scm_class_scm; | |
159 | SCM scm_class_int, scm_class_float, scm_class_double; | |
160 | ||
161 | SCM_SYMBOL (scm_sym_define_public, "define-public"); | |
162 | ||
163 | static SCM scm_make_unbound (void); | |
164 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
165 | static SCM scm_assert_bound (SCM value, SCM obj); |
166 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
167 | static SCM scm_sys_goops_loaded (void); | |
80662eda MD |
168 | |
169 | /****************************************************************************** | |
170 | * | |
171 | * Compute-cpl | |
172 | * | |
bbf8d523 MD |
173 | * This version doesn't fully handle multiple-inheritance. It serves |
174 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
175 | * |
176 | ******************************************************************************/ | |
177 | ||
80662eda MD |
178 | static SCM |
179 | map (SCM (*proc) (SCM), SCM ls) | |
180 | { | |
6b80d352 | 181 | if (SCM_NULLP (ls)) |
80662eda | 182 | return ls; |
6b80d352 DH |
183 | else |
184 | { | |
185 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
186 | SCM h = res; | |
187 | ls = SCM_CDR (ls); | |
188 | while (!SCM_NULLP (ls)) | |
189 | { | |
190 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
191 | h = SCM_CDR (h); | |
192 | ls = SCM_CDR (ls); | |
193 | } | |
194 | return res; | |
195 | } | |
80662eda MD |
196 | } |
197 | ||
198 | static SCM | |
199 | filter_cpl (SCM ls) | |
200 | { | |
201 | SCM res = SCM_EOL; | |
6b80d352 | 202 | while (!SCM_NULLP (ls)) |
80662eda MD |
203 | { |
204 | SCM el = SCM_CAR (ls); | |
79a3dafe | 205 | if (SCM_FALSEP (scm_c_memq (el, res))) |
80662eda MD |
206 | res = scm_cons (el, res); |
207 | ls = SCM_CDR (ls); | |
208 | } | |
209 | return res; | |
210 | } | |
211 | ||
212 | static SCM | |
213 | compute_cpl (SCM class) | |
214 | { | |
215 | if (goops_loaded_p) | |
216 | return CALL_GF1 ("compute-cpl", class); | |
217 | else | |
218 | { | |
219 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
220 | SCM ls = scm_append (scm_acons (class, supers, | |
221 | map (compute_cpl, supers))); | |
222 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
223 | } | |
224 | } | |
225 | ||
226 | /****************************************************************************** | |
227 | * | |
228 | * compute-slots | |
229 | * | |
230 | ******************************************************************************/ | |
231 | ||
232 | static SCM | |
233 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
234 | { | |
235 | SCM tmp; | |
236 | ||
237 | if (SCM_NULLP (l)) | |
238 | return res; | |
239 | ||
240 | tmp = SCM_CAAR (l); | |
c312aca7 | 241 | if (!SCM_SYMBOLP (tmp)) |
1afff620 | 242 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 243 | |
79a3dafe | 244 | if (SCM_FALSEP (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
245 | res = scm_cons (SCM_CAR (l), res); |
246 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
247 | } | |
6d77c894 | 248 | |
80662eda MD |
249 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
250 | } | |
251 | ||
252 | static SCM | |
253 | build_slots_list (SCM dslots, SCM cpl) | |
254 | { | |
255 | register SCM res = dslots; | |
256 | ||
6b80d352 | 257 | for (cpl = SCM_CDR (cpl); !SCM_NULLP (cpl); cpl = SCM_CDR (cpl)) |
1afff620 KN |
258 | res = scm_append (scm_list_2 (SCM_SLOT (SCM_CAR (cpl), |
259 | scm_si_direct_slots), | |
260 | res)); | |
80662eda MD |
261 | |
262 | /* res contains a list of slots. Remove slots which appears more than once */ | |
263 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
264 | } | |
265 | ||
266 | static SCM | |
267 | maplist (SCM ls) | |
268 | { | |
269 | SCM orig = ls; | |
6b80d352 | 270 | while (!SCM_NULLP (ls)) |
80662eda | 271 | { |
c312aca7 | 272 | if (!SCM_CONSP (SCM_CAR (ls))) |
80662eda MD |
273 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
274 | ls = SCM_CDR (ls); | |
275 | } | |
276 | return orig; | |
277 | } | |
278 | ||
80662eda | 279 | |
23437298 DH |
280 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
281 | (SCM class), | |
5352393c MG |
282 | "Return a list consisting of the names of all slots belonging to\n" |
283 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 284 | "its superclasses.") |
23437298 | 285 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 286 | { |
398d8ee1 | 287 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
288 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
289 | SCM_SLOT (class, scm_si_cpl)); | |
290 | } | |
23437298 DH |
291 | #undef FUNC_NAME |
292 | ||
80662eda MD |
293 | |
294 | /****************************************************************************** | |
295 | * | |
296 | * compute-getters-n-setters | |
6d77c894 TTN |
297 | * |
298 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 299 | * classes and will be overloaded in Scheme. |
80662eda MD |
300 | * |
301 | ******************************************************************************/ | |
302 | ||
303 | SCM_KEYWORD (k_init_value, "init-value"); | |
304 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
305 | ||
306 | static SCM | |
307 | compute_getters_n_setters (SCM slots) | |
308 | { | |
309 | SCM res = SCM_EOL; | |
310 | SCM *cdrloc = &res; | |
c014a02e | 311 | long i = 0; |
80662eda | 312 | |
6b80d352 | 313 | for ( ; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
314 | { |
315 | SCM init = SCM_BOOL_F; | |
316 | SCM options = SCM_CDAR (slots); | |
6b80d352 | 317 | if (!SCM_NULLP (options)) |
80662eda MD |
318 | { |
319 | init = scm_get_keyword (k_init_value, options, 0); | |
320 | if (init) | |
bbf8d523 MD |
321 | init = scm_closure (scm_list_2 (SCM_EOL, |
322 | scm_list_2 (scm_sym_quote, init)), | |
323 | SCM_EOL); | |
80662eda MD |
324 | else |
325 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
326 | } | |
327 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
328 | scm_cons (init, | |
329 | SCM_MAKINUM (i++))), | |
330 | SCM_EOL); | |
331 | cdrloc = SCM_CDRLOC (*cdrloc); | |
332 | } | |
333 | return res; | |
334 | } | |
335 | ||
336 | /****************************************************************************** | |
337 | * | |
338 | * initialize-object | |
339 | * | |
340 | ******************************************************************************/ | |
341 | ||
342 | /*fixme* Manufacture keywords in advance */ | |
343 | SCM | |
c014a02e | 344 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 345 | { |
c014a02e | 346 | long i; |
23437298 DH |
347 | |
348 | for (i = 0; i != len; i += 2) | |
80662eda | 349 | { |
23437298 DH |
350 | SCM obj = SCM_CAR (l); |
351 | ||
352 | if (!SCM_KEYWORDP (obj)) | |
1afff620 | 353 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
23437298 | 354 | else if (SCM_EQ_P (obj, key)) |
80662eda | 355 | return SCM_CADR (l); |
23437298 DH |
356 | else |
357 | l = SCM_CDDR (l); | |
80662eda | 358 | } |
23437298 | 359 | |
80662eda MD |
360 | return default_value; |
361 | } | |
362 | ||
80662eda | 363 | |
23437298 DH |
364 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
365 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
366 | "Determine an associated value for the keyword @var{key} from\n" |
367 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
368 | "number of elements, where, starting with the first, every\n" | |
369 | "second element is a keyword, followed by its associated value.\n" | |
370 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
371 | "@var{default_value} is returned.") | |
23437298 | 372 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 373 | { |
c014a02e | 374 | long len; |
23437298 DH |
375 | |
376 | SCM_ASSERT (SCM_KEYWORDP (key), key, SCM_ARG1, FUNC_NAME); | |
80662eda | 377 | len = scm_ilength (l); |
b6311c08 | 378 | if (len < 0 || len % 2 == 1) |
1afff620 | 379 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
380 | |
381 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 382 | } |
23437298 DH |
383 | #undef FUNC_NAME |
384 | ||
80662eda | 385 | |
80662eda MD |
386 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
387 | ||
388 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
389 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
390 | ||
398d8ee1 KN |
391 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
392 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
393 | "Initialize the object @var{obj} with the given arguments\n" |
394 | "@var{initargs}.") | |
398d8ee1 | 395 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
396 | { |
397 | SCM tmp, get_n_set, slots; | |
398 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 399 | long n_initargs; |
80662eda | 400 | |
398d8ee1 | 401 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 402 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 403 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 404 | |
80662eda MD |
405 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
406 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 407 | |
80662eda MD |
408 | /* See for each slot how it must be initialized */ |
409 | for (; | |
6b80d352 | 410 | !SCM_NULLP (slots); |
80662eda MD |
411 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
412 | { | |
413 | SCM slot_name = SCM_CAR (slots); | |
414 | SCM slot_value = 0; | |
6d77c894 | 415 | |
6b80d352 | 416 | if (!SCM_NULLP (SCM_CDR (slot_name))) |
80662eda MD |
417 | { |
418 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 419 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 420 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 421 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 422 | scm_list_1 (slot_name)); |
80662eda MD |
423 | tmp = scm_i_get_keyword (k_init_keyword, |
424 | SCM_CDR (slot_name), | |
425 | n, | |
426 | 0, | |
398d8ee1 | 427 | FUNC_NAME); |
80662eda MD |
428 | slot_name = SCM_CAR (slot_name); |
429 | if (tmp) | |
430 | { | |
431 | /* an initarg was provided for this slot */ | |
c312aca7 | 432 | if (!SCM_KEYWORDP (tmp)) |
398d8ee1 | 433 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 434 | scm_list_1 (tmp)); |
80662eda MD |
435 | slot_value = scm_i_get_keyword (tmp, |
436 | initargs, | |
437 | n_initargs, | |
438 | 0, | |
398d8ee1 | 439 | FUNC_NAME); |
80662eda MD |
440 | } |
441 | } | |
442 | ||
443 | if (slot_value) | |
444 | /* set slot to provided value */ | |
445 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
446 | else | |
447 | { | |
448 | /* set slot to its :init-form if it exists */ | |
449 | tmp = SCM_CADAR (get_n_set); | |
450 | if (tmp != SCM_BOOL_F) | |
451 | { | |
452 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
453 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
454 | { | |
455 | SCM env = SCM_EXTEND_ENV (SCM_EOL, SCM_EOL, SCM_ENV (tmp)); | |
456 | set_slot_value (class, | |
457 | obj, | |
458 | SCM_CAR (get_n_set), | |
f9450cdb | 459 | scm_eval_body (SCM_CLOSURE_BODY (tmp), env)); |
80662eda MD |
460 | } |
461 | } | |
462 | } | |
463 | } | |
6d77c894 | 464 | |
80662eda MD |
465 | return obj; |
466 | } | |
398d8ee1 | 467 | #undef FUNC_NAME |
80662eda MD |
468 | |
469 | ||
470 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
471 | SCM_KEYWORD (k_allocation, "allocation"); |
472 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 473 | |
398d8ee1 KN |
474 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
475 | (SCM class), | |
476 | "") | |
477 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 478 | { |
6b80d352 DH |
479 | SCM slots, nfields; |
480 | unsigned long int n, i; | |
481 | char *s; | |
80662eda | 482 | |
398d8ee1 | 483 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda MD |
484 | slots = SCM_SLOT (class, scm_si_slots); |
485 | nfields = SCM_SLOT (class, scm_si_nfields); | |
486 | if (!SCM_INUMP (nfields) || SCM_INUM (nfields) < 0) | |
398d8ee1 | 487 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 488 | scm_list_1 (nfields)); |
80662eda MD |
489 | n = 2 * SCM_INUM (nfields); |
490 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 | |
491 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 492 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 493 | scm_list_1 (nfields)); |
6d77c894 | 494 | |
4c9419ac | 495 | s = n > 0 ? scm_malloc (n) : 0; |
80662eda MD |
496 | for (i = 0; i < n; i += 2) |
497 | { | |
6b80d352 | 498 | long len; |
b46fae00 | 499 | SCM type, allocation; |
6b80d352 DH |
500 | char p, a; |
501 | ||
c312aca7 | 502 | if (!SCM_CONSP (slots)) |
6b80d352 | 503 | SCM_MISC_ERROR ("too few slot definitions", SCM_EOL); |
80662eda | 504 | len = scm_ilength (SCM_CDAR (slots)); |
b46fae00 MD |
505 | allocation = scm_i_get_keyword (k_allocation, SCM_CDAR (slots), |
506 | len, k_instance, FUNC_NAME); | |
507 | while (!SCM_EQ_P (allocation, k_instance)) | |
508 | { | |
509 | slots = SCM_CDR (slots); | |
510 | len = scm_ilength (SCM_CDAR (slots)); | |
511 | allocation = scm_i_get_keyword (k_allocation, SCM_CDAR (slots), | |
512 | len, k_instance, FUNC_NAME); | |
513 | } | |
514 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), | |
515 | len, SCM_BOOL_F, FUNC_NAME); | |
6b80d352 | 516 | if (SCM_FALSEP (type)) |
80662eda | 517 | { |
6b80d352 DH |
518 | p = 'p'; |
519 | a = 'w'; | |
80662eda MD |
520 | } |
521 | else | |
522 | { | |
6b80d352 DH |
523 | if (!SCM_CLASSP (type)) |
524 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); | |
525 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) | |
526 | { | |
527 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
528 | p = 's'; | |
529 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
530 | p = 'p'; | |
531 | else | |
532 | p = 'u'; | |
533 | ||
534 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
535 | a = 'o'; | |
536 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
537 | a = 'r'; | |
538 | else | |
539 | a = 'w'; | |
540 | } | |
541 | else | |
542 | { | |
543 | p = 'p'; | |
544 | a = 'w'; | |
545 | } | |
80662eda MD |
546 | } |
547 | s[i] = p; | |
548 | s[i + 1] = a; | |
549 | slots = SCM_CDR (slots); | |
550 | } | |
dcb410ec | 551 | SCM_SET_SLOT (class, scm_si_layout, scm_mem2symbol (s, n)); |
80662eda | 552 | if (s) |
4c9419ac | 553 | free (s); |
80662eda MD |
554 | return SCM_UNSPECIFIED; |
555 | } | |
398d8ee1 | 556 | #undef FUNC_NAME |
80662eda MD |
557 | |
558 | static void prep_hashsets (SCM); | |
559 | ||
398d8ee1 KN |
560 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
561 | (SCM class, SCM dsupers), | |
562 | "") | |
563 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda MD |
564 | { |
565 | SCM ls = dsupers; | |
c014a02e | 566 | long flags = 0; |
398d8ee1 | 567 | SCM_VALIDATE_INSTANCE (1, class); |
6b80d352 | 568 | while (!SCM_NULLP (ls)) |
80662eda | 569 | { |
c312aca7 | 570 | SCM_ASSERT (SCM_CONSP (ls) |
80662eda MD |
571 | && SCM_INSTANCEP (SCM_CAR (ls)), |
572 | dsupers, | |
573 | SCM_ARG2, | |
398d8ee1 | 574 | FUNC_NAME); |
80662eda MD |
575 | flags |= SCM_CLASS_FLAGS (SCM_CAR (ls)); |
576 | ls = SCM_CDR (ls); | |
577 | } | |
578 | flags &= SCM_CLASSF_INHERIT; | |
579 | if (flags & SCM_CLASSF_ENTITY) | |
580 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_entity); | |
581 | else | |
582 | { | |
c014a02e | 583 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda MD |
584 | #if 0 |
585 | /* | |
4c9419ac | 586 | * We could avoid calling scm_gc_malloc in the allocation code |
80662eda MD |
587 | * (in which case the following two lines are needed). Instead |
588 | * we make 0-slot instances non-light, so that the light case | |
589 | * can be handled without special cases. | |
590 | */ | |
591 | if (n == 0) | |
592 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_0); | |
593 | #endif | |
594 | if (n > 0 && !(flags & SCM_CLASSF_METACLASS)) | |
595 | { | |
596 | /* NOTE: The following depends on scm_struct_i_size. */ | |
597 | flags |= SCM_STRUCTF_LIGHT + n * sizeof (SCM); /* use light representation */ | |
598 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
599 | } | |
600 | } | |
601 | SCM_SET_CLASS_FLAGS (class, flags); | |
602 | ||
603 | prep_hashsets (class); | |
6d77c894 | 604 | |
80662eda MD |
605 | return SCM_UNSPECIFIED; |
606 | } | |
398d8ee1 | 607 | #undef FUNC_NAME |
80662eda MD |
608 | |
609 | void | |
610 | prep_hashsets (SCM class) | |
611 | { | |
dcb410ec | 612 | unsigned int i; |
80662eda MD |
613 | |
614 | for (i = 0; i < 7; ++i) | |
dcb410ec | 615 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
616 | } |
617 | ||
618 | /******************************************************************************/ | |
619 | ||
620 | SCM | |
621 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
622 | { | |
623 | SCM z, cpl, slots, nfields, g_n_s; | |
624 | ||
625 | /* Allocate one instance */ | |
626 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
627 | ||
628 | /* Initialize its slots */ | |
dcb410ec | 629 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
630 | cpl = compute_cpl (z); |
631 | slots = build_slots_list (maplist (dslots), cpl); | |
632 | nfields = SCM_MAKINUM (scm_ilength (slots)); | |
633 | g_n_s = compute_getters_n_setters (slots); | |
634 | ||
dcb410ec DH |
635 | SCM_SET_SLOT (z, scm_si_name, name); |
636 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); | |
637 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
638 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
639 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
640 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
641 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
642 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
643 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
644 | SCM_SET_SLOT (z, scm_si_environment, | |
645 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
646 | |
647 | /* Add this class in the direct-subclasses slot of dsupers */ | |
648 | { | |
649 | SCM tmp; | |
dcb410ec DH |
650 | for (tmp = dsupers; !SCM_NULLP (tmp); tmp = SCM_CDR (tmp)) |
651 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, | |
652 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
653 | scm_si_direct_subclasses))); | |
80662eda MD |
654 | } |
655 | ||
656 | /* Support for the underlying structs: */ | |
657 | SCM_SET_CLASS_FLAGS (z, (class == scm_class_entity_class | |
658 | ? (SCM_CLASSF_GOOPS_OR_VALID | |
659 | | SCM_CLASSF_OPERATOR | |
660 | | SCM_CLASSF_ENTITY) | |
661 | : class == scm_class_operator_class | |
662 | ? SCM_CLASSF_GOOPS_OR_VALID | SCM_CLASSF_OPERATOR | |
663 | : SCM_CLASSF_GOOPS_OR_VALID)); | |
664 | return z; | |
665 | } | |
666 | ||
667 | SCM | |
668 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
669 | { | |
670 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
671 | scm_sys_inherit_magic_x (z, dsupers); | |
672 | scm_sys_prep_layout_x (z); | |
673 | return z; | |
674 | } | |
675 | ||
676 | /******************************************************************************/ | |
677 | ||
6b80d352 DH |
678 | SCM_SYMBOL (sym_layout, "layout"); |
679 | SCM_SYMBOL (sym_vcell, "vcell"); | |
680 | SCM_SYMBOL (sym_vtable, "vtable"); | |
681 | SCM_SYMBOL (sym_print, "print"); | |
682 | SCM_SYMBOL (sym_procedure, "procedure"); | |
683 | SCM_SYMBOL (sym_setter, "setter"); | |
684 | SCM_SYMBOL (sym_redefined, "redefined"); | |
685 | SCM_SYMBOL (sym_h0, "h0"); | |
686 | SCM_SYMBOL (sym_h1, "h1"); | |
687 | SCM_SYMBOL (sym_h2, "h2"); | |
688 | SCM_SYMBOL (sym_h3, "h3"); | |
689 | SCM_SYMBOL (sym_h4, "h4"); | |
690 | SCM_SYMBOL (sym_h5, "h5"); | |
691 | SCM_SYMBOL (sym_h6, "h6"); | |
692 | SCM_SYMBOL (sym_h7, "h7"); | |
693 | SCM_SYMBOL (sym_name, "name"); | |
694 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
695 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
696 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
697 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
698 | SCM_SYMBOL (sym_cpl, "cpl"); | |
699 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
700 | SCM_SYMBOL (sym_slots, "slots"); | |
701 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
702 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
703 | SCM_SYMBOL (sym_nfields, "nfields"); | |
704 | SCM_SYMBOL (sym_environment, "environment"); | |
705 | ||
706 | ||
80662eda MD |
707 | static SCM |
708 | build_class_class_slots () | |
709 | { | |
6b80d352 DH |
710 | return scm_list_n ( |
711 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
6b80d352 DH |
712 | scm_list_3 (sym_vtable, k_class, scm_class_self), |
713 | scm_list_1 (sym_print), | |
714 | scm_list_3 (sym_procedure, k_class, scm_class_protected_opaque), | |
715 | scm_list_3 (sym_setter, k_class, scm_class_protected_opaque), | |
716 | scm_list_1 (sym_redefined), | |
717 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
718 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
719 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
720 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
721 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
722 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
723 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
724 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
725 | scm_list_1 (sym_name), | |
726 | scm_list_1 (sym_direct_supers), | |
727 | scm_list_1 (sym_direct_slots), | |
728 | scm_list_1 (sym_direct_subclasses), | |
729 | scm_list_1 (sym_direct_methods), | |
730 | scm_list_1 (sym_cpl), | |
731 | scm_list_1 (sym_default_slot_definition_class), | |
732 | scm_list_1 (sym_slots), | |
733 | scm_list_1 (sym_getters_n_setters), | |
734 | scm_list_1 (sym_keyword_access), | |
735 | scm_list_1 (sym_nfields), | |
736 | scm_list_1 (sym_environment), | |
737 | SCM_UNDEFINED); | |
80662eda MD |
738 | } |
739 | ||
740 | static void | |
741 | create_basic_classes (void) | |
742 | { | |
743 | /* SCM slots_of_class = build_class_class_slots (); */ | |
744 | ||
745 | /**** <scm_class_class> ****/ | |
746 | SCM cs = scm_makfrom0str (SCM_CLASS_CLASS_LAYOUT | |
747 | + 2 * scm_vtable_offset_user); | |
38ae064c | 748 | SCM name = scm_str2symbol ("<class>"); |
80662eda MD |
749 | scm_class_class = scm_permanent_object (scm_make_vtable_vtable (cs, |
750 | SCM_INUM0, | |
751 | SCM_EOL)); | |
752 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID | |
753 | | SCM_CLASSF_METACLASS)); | |
754 | ||
dcb410ec DH |
755 | SCM_SET_SLOT (scm_class_class, scm_si_name, name); |
756 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ | |
757 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
758 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 759 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
760 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
761 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
762 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, SCM_MAKINUM (SCM_N_CLASS_SLOTS)); | |
763 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
764 | compute_getters_n_setters (slots_of_class)); */ | |
765 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
766 | SCM_SET_SLOT (scm_class_class, scm_si_environment, | |
767 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
768 | |
769 | prep_hashsets (scm_class_class); | |
770 | ||
771 | DEFVAR(name, scm_class_class); | |
772 | ||
773 | /**** <scm_class_top> ****/ | |
38ae064c | 774 | name = scm_str2symbol ("<top>"); |
80662eda MD |
775 | scm_class_top = scm_permanent_object (scm_basic_make_class (scm_class_class, |
776 | name, | |
777 | SCM_EOL, | |
778 | SCM_EOL)); | |
779 | ||
780 | DEFVAR(name, scm_class_top); | |
6d77c894 | 781 | |
80662eda | 782 | /**** <scm_class_object> ****/ |
38ae064c | 783 | name = scm_str2symbol ("<object>"); |
80662eda MD |
784 | scm_class_object = scm_permanent_object (scm_basic_make_class (scm_class_class, |
785 | name, | |
1afff620 | 786 | scm_list_1 (scm_class_top), |
80662eda MD |
787 | SCM_EOL)); |
788 | ||
789 | DEFVAR (name, scm_class_object); | |
790 | ||
791 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 792 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 793 | |
1afff620 KN |
794 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
795 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
796 | } |
797 | ||
798 | /******************************************************************************/ | |
799 | ||
398d8ee1 KN |
800 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
801 | (SCM obj), | |
6bcefd15 | 802 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 803 | #define FUNC_NAME s_scm_instance_p |
80662eda | 804 | { |
c312aca7 | 805 | return SCM_BOOL (SCM_INSTANCEP (obj)); |
80662eda | 806 | } |
398d8ee1 | 807 | #undef FUNC_NAME |
80662eda | 808 | |
80662eda MD |
809 | |
810 | /****************************************************************************** | |
6d77c894 | 811 | * |
80662eda MD |
812 | * Meta object accessors |
813 | * | |
814 | ******************************************************************************/ | |
398d8ee1 KN |
815 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
816 | (SCM obj), | |
6bcefd15 | 817 | "Return the class name of @var{obj}.") |
398d8ee1 | 818 | #define FUNC_NAME s_scm_class_name |
80662eda | 819 | { |
398d8ee1 | 820 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 821 | return scm_slot_ref (obj, sym_name); |
80662eda | 822 | } |
398d8ee1 | 823 | #undef FUNC_NAME |
80662eda | 824 | |
398d8ee1 KN |
825 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
826 | (SCM obj), | |
6bcefd15 | 827 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 828 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 829 | { |
398d8ee1 | 830 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 831 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 832 | } |
398d8ee1 | 833 | #undef FUNC_NAME |
80662eda | 834 | |
398d8ee1 KN |
835 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
836 | (SCM obj), | |
6bcefd15 | 837 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 838 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 839 | { |
398d8ee1 | 840 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 841 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 842 | } |
398d8ee1 | 843 | #undef FUNC_NAME |
80662eda | 844 | |
398d8ee1 KN |
845 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
846 | (SCM obj), | |
6bcefd15 | 847 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 848 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 849 | { |
398d8ee1 | 850 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 851 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 852 | } |
398d8ee1 | 853 | #undef FUNC_NAME |
80662eda | 854 | |
398d8ee1 KN |
855 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
856 | (SCM obj), | |
6bcefd15 | 857 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 858 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 859 | { |
398d8ee1 | 860 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 861 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 862 | } |
398d8ee1 | 863 | #undef FUNC_NAME |
80662eda | 864 | |
398d8ee1 KN |
865 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
866 | (SCM obj), | |
6bcefd15 | 867 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 868 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 869 | { |
398d8ee1 | 870 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 871 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 872 | } |
398d8ee1 | 873 | #undef FUNC_NAME |
80662eda | 874 | |
398d8ee1 KN |
875 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
876 | (SCM obj), | |
6bcefd15 | 877 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 878 | #define FUNC_NAME s_scm_class_slots |
80662eda | 879 | { |
398d8ee1 | 880 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 881 | return scm_slot_ref (obj, sym_slots); |
80662eda | 882 | } |
398d8ee1 | 883 | #undef FUNC_NAME |
80662eda | 884 | |
398d8ee1 KN |
885 | SCM_DEFINE (scm_class_environment, "class-environment", 1, 0, 0, |
886 | (SCM obj), | |
6bcefd15 | 887 | "Return the environment of the class @var{obj}.") |
398d8ee1 | 888 | #define FUNC_NAME s_scm_class_environment |
80662eda | 889 | { |
398d8ee1 | 890 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 891 | return scm_slot_ref(obj, sym_environment); |
80662eda | 892 | } |
398d8ee1 | 893 | #undef FUNC_NAME |
80662eda MD |
894 | |
895 | ||
398d8ee1 KN |
896 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
897 | (SCM obj), | |
6bcefd15 | 898 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 899 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 900 | { |
398d8ee1 | 901 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
902 | return scm_procedure_property (obj, scm_sym_name); |
903 | } | |
398d8ee1 | 904 | #undef FUNC_NAME |
80662eda | 905 | |
bbf8d523 MD |
906 | SCM_SYMBOL (sym_methods, "methods"); |
907 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
908 | SCM_SYMBOL (sym_extends, "extends"); | |
909 | ||
910 | static | |
911 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
912 | { | |
913 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
914 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
915 | while (!SCM_NULLP (gfs)) | |
916 | { | |
917 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
918 | gfs = SCM_CDR (gfs); | |
919 | } | |
920 | return method_lists; | |
921 | } | |
922 | ||
923 | static | |
924 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
925 | { | |
926 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
927 | { | |
928 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
929 | while (!SCM_NULLP (gfs)) | |
930 | { | |
931 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
932 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
933 | method_lists), | |
934 | SCM_CAR (gfs)); | |
935 | gfs = SCM_CDR (gfs); | |
936 | } | |
937 | } | |
938 | return method_lists; | |
939 | } | |
940 | ||
398d8ee1 KN |
941 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
942 | (SCM obj), | |
6bcefd15 | 943 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 944 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 945 | { |
bbf8d523 | 946 | SCM methods; |
398d8ee1 | 947 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
948 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
949 | methods = fold_downward_gf_methods (methods, obj); | |
950 | return scm_append (methods); | |
80662eda | 951 | } |
398d8ee1 | 952 | #undef FUNC_NAME |
80662eda | 953 | |
398d8ee1 KN |
954 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
955 | (SCM obj), | |
bb2c02f2 | 956 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 957 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 958 | { |
398d8ee1 | 959 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 960 | return scm_slot_ref (obj, scm_str2symbol ("generic-function")); |
80662eda | 961 | } |
398d8ee1 | 962 | #undef FUNC_NAME |
80662eda | 963 | |
398d8ee1 KN |
964 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
965 | (SCM obj), | |
6bcefd15 | 966 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 967 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 968 | { |
398d8ee1 | 969 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 970 | return scm_slot_ref (obj, scm_str2symbol ("specializers")); |
80662eda | 971 | } |
398d8ee1 | 972 | #undef FUNC_NAME |
80662eda | 973 | |
398d8ee1 KN |
974 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
975 | (SCM obj), | |
6bcefd15 | 976 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 977 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 978 | { |
398d8ee1 | 979 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 980 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 981 | } |
398d8ee1 | 982 | #undef FUNC_NAME |
80662eda | 983 | |
398d8ee1 KN |
984 | SCM_DEFINE (scm_accessor_method_slot_definition, "accessor-method-slot-definition", 1, 0, 0, |
985 | (SCM obj), | |
6bcefd15 | 986 | "Return the slot definition of the accessor @var{obj}.") |
398d8ee1 | 987 | #define FUNC_NAME s_scm_accessor_method_slot_definition |
80662eda | 988 | { |
398d8ee1 | 989 | SCM_VALIDATE_ACCESSOR (1, obj); |
38ae064c | 990 | return scm_slot_ref (obj, scm_str2symbol ("slot-definition")); |
398d8ee1 KN |
991 | } |
992 | #undef FUNC_NAME | |
80662eda | 993 | |
5e03762c MD |
994 | SCM_DEFINE (scm_sys_tag_body, "%tag-body", 1, 0, 0, |
995 | (SCM body), | |
87e7741d | 996 | "Internal GOOPS magic---don't use this function!") |
5e03762c MD |
997 | #define FUNC_NAME s_scm_sys_tag_body |
998 | { | |
999 | return scm_cons (SCM_IM_LAMBDA, body); | |
87e7741d MD |
1000 | } |
1001 | #undef FUNC_NAME | |
80662eda MD |
1002 | |
1003 | /****************************************************************************** | |
1004 | * | |
1005 | * S l o t a c c e s s | |
1006 | * | |
1007 | ******************************************************************************/ | |
1008 | ||
398d8ee1 KN |
1009 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1010 | (), | |
6bcefd15 | 1011 | "Return the unbound value.") |
398d8ee1 | 1012 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1013 | { |
1014 | return SCM_GOOPS_UNBOUND; | |
1015 | } | |
398d8ee1 | 1016 | #undef FUNC_NAME |
80662eda | 1017 | |
398d8ee1 KN |
1018 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1019 | (SCM obj), | |
6bcefd15 | 1020 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1021 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1022 | { |
1023 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1024 | } | |
398d8ee1 | 1025 | #undef FUNC_NAME |
80662eda | 1026 | |
398d8ee1 KN |
1027 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1028 | (SCM value, SCM obj), | |
6bcefd15 MG |
1029 | "Return @var{value} if it is bound, and invoke the\n" |
1030 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1031 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1032 | { |
1033 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1034 | return CALL_GF1 ("slot-unbound", obj); | |
1035 | return value; | |
1036 | } | |
398d8ee1 | 1037 | #undef FUNC_NAME |
80662eda | 1038 | |
398d8ee1 KN |
1039 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1040 | (SCM obj, SCM index), | |
6bcefd15 MG |
1041 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1042 | "the value from @var{obj}.") | |
398d8ee1 | 1043 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda MD |
1044 | { |
1045 | SCM value = SCM_SLOT (obj, SCM_INUM (index)); | |
1046 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1047 | return CALL_GF1 ("slot-unbound", obj); | |
1048 | return value; | |
1049 | } | |
398d8ee1 | 1050 | #undef FUNC_NAME |
80662eda | 1051 | |
398d8ee1 KN |
1052 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1053 | (SCM obj, SCM index), | |
6bcefd15 | 1054 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1055 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1056 | { |
6b80d352 | 1057 | unsigned long int i; |
80662eda | 1058 | |
398d8ee1 KN |
1059 | SCM_VALIDATE_INSTANCE (1, obj); |
1060 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1061 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1062 | i = SCM_INUM (index); |
6b80d352 DH |
1063 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1064 | ||
80662eda MD |
1065 | return scm_at_assert_bound_ref (obj, index); |
1066 | } | |
ca83b028 DH |
1067 | #undef FUNC_NAME |
1068 | ||
398d8ee1 KN |
1069 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1070 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1071 | "Set the slot with index @var{index} in @var{obj} to\n" |
1072 | "@var{value}.") | |
398d8ee1 | 1073 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1074 | { |
6b80d352 | 1075 | unsigned long int i; |
80662eda | 1076 | |
398d8ee1 KN |
1077 | SCM_VALIDATE_INSTANCE (1, obj); |
1078 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1079 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1080 | i = SCM_INUM (index); |
6b80d352 DH |
1081 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1082 | ||
dcb410ec | 1083 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1084 | |
80662eda MD |
1085 | return SCM_UNSPECIFIED; |
1086 | } | |
ca83b028 DH |
1087 | #undef FUNC_NAME |
1088 | ||
80662eda MD |
1089 | |
1090 | /** Utilities **/ | |
1091 | ||
1092 | /* In the future, this function will return the effective slot | |
1093 | * definition associated with SLOT_NAME. Now it just returns some of | |
1094 | * the information which will be stored in the effective slot | |
1095 | * definition. | |
1096 | */ | |
1097 | ||
1098 | static SCM | |
1099 | slot_definition_using_name (SCM class, SCM slot_name) | |
1100 | { | |
1101 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
6b80d352 | 1102 | for (; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
1103 | if (SCM_CAAR (slots) == slot_name) |
1104 | return SCM_CAR (slots); | |
1105 | return SCM_BOOL_F; | |
1106 | } | |
1107 | ||
1108 | static SCM | |
e81d98ec | 1109 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
80662eda MD |
1110 | { |
1111 | SCM access = SCM_CDDR (slotdef); | |
1112 | /* Two cases here: | |
1113 | * - access is an integer (the offset of this slot in the slots vector) | |
1114 | * - otherwise (car access) is the getter function to apply | |
23437298 | 1115 | */ |
80662eda MD |
1116 | if (SCM_INUMP (access)) |
1117 | return SCM_SLOT (obj, SCM_INUM (access)); | |
1118 | else | |
1119 | { | |
6d77c894 | 1120 | /* We must evaluate (apply (car access) (list obj)) |
80662eda MD |
1121 | * where (car access) is known to be a closure of arity 1 */ |
1122 | register SCM code, env; | |
1123 | ||
1124 | code = SCM_CAR (access); | |
1125 | if (!SCM_CLOSUREP (code)) | |
1126 | return SCM_SUBRF (code) (obj); | |
726d810a | 1127 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1128 | scm_list_1 (obj), |
80662eda MD |
1129 | SCM_ENV (code)); |
1130 | /* Evaluate the closure body */ | |
f9450cdb | 1131 | return scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1132 | } |
1133 | } | |
1134 | ||
1135 | static SCM | |
1136 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1137 | { | |
1138 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1139 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1140 | return get_slot_value (class, obj, slotdef); |
1141 | else | |
1142 | return CALL_GF3 ("slot-missing", class, obj, slot_name); | |
1143 | } | |
1144 | ||
1145 | static SCM | |
e81d98ec | 1146 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
80662eda MD |
1147 | { |
1148 | SCM access = SCM_CDDR (slotdef); | |
1149 | /* Two cases here: | |
1150 | * - access is an integer (the offset of this slot in the slots vector) | |
1151 | * - otherwise (cadr access) is the setter function to apply | |
1152 | */ | |
1153 | if (SCM_INUMP (access)) | |
dcb410ec | 1154 | SCM_SET_SLOT (obj, SCM_INUM (access), value); |
80662eda MD |
1155 | else |
1156 | { | |
1157 | /* We must evaluate (apply (cadr l) (list obj value)) | |
1158 | * where (cadr l) is known to be a closure of arity 2 */ | |
1159 | register SCM code, env; | |
1160 | ||
1161 | code = SCM_CADR (access); | |
1162 | if (!SCM_CLOSUREP (code)) | |
1163 | SCM_SUBRF (code) (obj, value); | |
1164 | else | |
1165 | { | |
726d810a | 1166 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1167 | scm_list_2 (obj, value), |
80662eda MD |
1168 | SCM_ENV (code)); |
1169 | /* Evaluate the closure body */ | |
f9450cdb | 1170 | scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1171 | } |
1172 | } | |
1173 | return SCM_UNSPECIFIED; | |
1174 | } | |
1175 | ||
1176 | static SCM | |
1177 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1178 | { | |
1179 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1180 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1181 | return set_slot_value (class, obj, slotdef, value); |
1182 | else | |
1183 | return CALL_GF4 ("slot-missing", class, obj, slot_name, value); | |
1184 | } | |
1185 | ||
1186 | static SCM | |
e81d98ec | 1187 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1188 | { |
1189 | register SCM l; | |
1190 | ||
729dbac3 DH |
1191 | for (l = SCM_ACCESSORS_OF (obj); !SCM_NULLP (l); l = SCM_CDR (l)) |
1192 | if (SCM_EQ_P (SCM_CAAR (l), slot_name)) | |
80662eda MD |
1193 | return SCM_BOOL_T; |
1194 | ||
1195 | return SCM_BOOL_F; | |
1196 | } | |
1197 | ||
80662eda MD |
1198 | /* ======================================== */ |
1199 | ||
23437298 DH |
1200 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1201 | (SCM class, SCM obj, SCM slot_name), | |
1202 | "") | |
1203 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1204 | { |
1205 | SCM res; | |
1206 | ||
398d8ee1 KN |
1207 | SCM_VALIDATE_CLASS (1, class); |
1208 | SCM_VALIDATE_INSTANCE (2, obj); | |
1209 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1210 | |
1211 | res = get_slot_value_using_name (class, obj, slot_name); | |
1212 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1213 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1214 | return res; | |
1215 | } | |
23437298 | 1216 | #undef FUNC_NAME |
80662eda | 1217 | |
23437298 DH |
1218 | |
1219 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1220 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1221 | "") | |
1222 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1223 | { |
398d8ee1 KN |
1224 | SCM_VALIDATE_CLASS (1, class); |
1225 | SCM_VALIDATE_INSTANCE (2, obj); | |
1226 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1227 | |
80662eda MD |
1228 | return set_slot_value_using_name (class, obj, slot_name, value); |
1229 | } | |
23437298 DH |
1230 | #undef FUNC_NAME |
1231 | ||
80662eda | 1232 | |
398d8ee1 KN |
1233 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1234 | (SCM class, SCM obj, SCM slot_name), | |
1235 | "") | |
1236 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1237 | { |
398d8ee1 KN |
1238 | SCM_VALIDATE_CLASS (1, class); |
1239 | SCM_VALIDATE_INSTANCE (2, obj); | |
1240 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1241 | |
1242 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1243 | ? SCM_BOOL_F | |
1244 | : SCM_BOOL_T); | |
1245 | } | |
398d8ee1 | 1246 | #undef FUNC_NAME |
80662eda | 1247 | |
398d8ee1 KN |
1248 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1249 | (SCM class, SCM obj, SCM slot_name), | |
1250 | "") | |
1251 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1252 | { | |
1253 | SCM_VALIDATE_CLASS (1, class); | |
1254 | SCM_VALIDATE_INSTANCE (2, obj); | |
1255 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1256 | return test_slot_existence (class, obj, slot_name); |
1257 | } | |
398d8ee1 | 1258 | #undef FUNC_NAME |
80662eda MD |
1259 | |
1260 | ||
1261 | /* ======================================== */ | |
1262 | ||
398d8ee1 KN |
1263 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1264 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1265 | "Return the value from @var{obj}'s slot with the name\n" |
1266 | "@var{slot_name}.") | |
398d8ee1 | 1267 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1268 | { |
1269 | SCM res, class; | |
1270 | ||
398d8ee1 | 1271 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1272 | TEST_CHANGE_CLASS (obj, class); |
1273 | ||
1274 | res = get_slot_value_using_name (class, obj, slot_name); | |
1275 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1276 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1277 | return res; | |
1278 | } | |
398d8ee1 | 1279 | #undef FUNC_NAME |
80662eda | 1280 | |
398d8ee1 KN |
1281 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1282 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1283 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1284 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1285 | { |
1286 | SCM class; | |
1287 | ||
398d8ee1 | 1288 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1289 | TEST_CHANGE_CLASS(obj, class); |
1290 | ||
1291 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1292 | } | |
398d8ee1 | 1293 | #undef FUNC_NAME |
80662eda | 1294 | |
398d8ee1 | 1295 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1296 | |
398d8ee1 KN |
1297 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1298 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1299 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1300 | "is bound.") | |
398d8ee1 | 1301 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1302 | { |
1303 | SCM class; | |
1304 | ||
398d8ee1 | 1305 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1306 | TEST_CHANGE_CLASS(obj, class); |
1307 | ||
1308 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1309 | obj, | |
1310 | slot_name)) | |
1311 | ? SCM_BOOL_F | |
1312 | : SCM_BOOL_T); | |
1313 | } | |
398d8ee1 | 1314 | #undef FUNC_NAME |
80662eda | 1315 | |
6d77c894 | 1316 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1317 | (SCM obj, SCM slot_name), |
6bcefd15 | 1318 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1319 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1320 | { |
1321 | SCM class; | |
1322 | ||
398d8ee1 KN |
1323 | SCM_VALIDATE_INSTANCE (1, obj); |
1324 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1325 | TEST_CHANGE_CLASS (obj, class); |
1326 | ||
1327 | return test_slot_existence (class, obj, slot_name); | |
1328 | } | |
398d8ee1 | 1329 | #undef FUNC_NAME |
80662eda MD |
1330 | |
1331 | ||
1332 | /****************************************************************************** | |
1333 | * | |
1334 | * %allocate-instance (the low level instance allocation primitive) | |
1335 | * | |
1336 | ******************************************************************************/ | |
1337 | ||
1338 | static void clear_method_cache (SCM); | |
1339 | ||
1340 | static SCM | |
c014a02e | 1341 | wrap_init (SCM class, SCM *m, long n) |
80662eda | 1342 | { |
c014a02e | 1343 | long i; |
6d77c894 | 1344 | |
80662eda MD |
1345 | /* Set all slots to unbound */ |
1346 | for (i = 0; i < n; i++) | |
1347 | m[i] = SCM_GOOPS_UNBOUND; | |
1348 | ||
228a24ef DH |
1349 | return scm_double_cell ((((scm_t_bits) SCM_STRUCT_DATA (class)) |
1350 | | scm_tc3_struct), | |
1351 | (scm_t_bits) m, 0, 0); | |
80662eda MD |
1352 | } |
1353 | ||
398d8ee1 KN |
1354 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1355 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1356 | "Create a new instance of class @var{class} and initialize it\n" |
1357 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1358 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda MD |
1359 | { |
1360 | SCM *m; | |
c014a02e | 1361 | long n; |
80662eda | 1362 | |
398d8ee1 | 1363 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1364 | |
1365 | /* Most instances */ | |
1366 | if (SCM_CLASS_FLAGS (class) & SCM_STRUCTF_LIGHT) | |
1367 | { | |
1368 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
4c9419ac | 1369 | m = (SCM *) scm_gc_malloc (n * sizeof (SCM), "struct"); |
80662eda MD |
1370 | return wrap_init (class, m, n); |
1371 | } | |
6d77c894 | 1372 | |
80662eda MD |
1373 | /* Foreign objects */ |
1374 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_FOREIGN) | |
1375 | return scm_make_foreign_object (class, initargs); | |
1376 | ||
1377 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
6d77c894 | 1378 | |
80662eda MD |
1379 | /* Entities */ |
1380 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_ENTITY) | |
1381 | { | |
4c9419ac MV |
1382 | m = (SCM *) scm_alloc_struct (n, scm_struct_entity_n_extra_words, |
1383 | "entity struct"); | |
80662eda MD |
1384 | m[scm_struct_i_setter] = SCM_BOOL_F; |
1385 | m[scm_struct_i_procedure] = SCM_BOOL_F; | |
1386 | /* Generic functions */ | |
1387 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) | |
1388 | { | |
1389 | SCM gf = wrap_init (class, m, n); | |
1390 | clear_method_cache (gf); | |
1391 | return gf; | |
1392 | } | |
1393 | else | |
1394 | return wrap_init (class, m, n); | |
1395 | } | |
6d77c894 | 1396 | |
80662eda MD |
1397 | /* Class objects */ |
1398 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_METACLASS) | |
1399 | { | |
c014a02e | 1400 | long i; |
80662eda MD |
1401 | |
1402 | /* allocate class object */ | |
1403 | SCM z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
1404 | ||
dcb410ec | 1405 | SCM_SET_SLOT (z, scm_si_print, SCM_GOOPS_UNBOUND); |
80662eda | 1406 | for (i = scm_si_goops_fields; i < n; i++) |
dcb410ec | 1407 | SCM_SET_SLOT (z, i, SCM_GOOPS_UNBOUND); |
80662eda MD |
1408 | |
1409 | if (SCM_SUBCLASSP (class, scm_class_entity_class)) | |
1410 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY); | |
1411 | else if (SCM_SUBCLASSP (class, scm_class_operator_class)) | |
1412 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR); | |
1413 | ||
1414 | return z; | |
1415 | } | |
6d77c894 | 1416 | |
80662eda MD |
1417 | /* Non-light instances */ |
1418 | { | |
4c9419ac | 1419 | m = (SCM *) scm_alloc_struct (n, scm_struct_n_extra_words, "heavy struct"); |
80662eda MD |
1420 | return wrap_init (class, m, n); |
1421 | } | |
1422 | } | |
398d8ee1 | 1423 | #undef FUNC_NAME |
80662eda | 1424 | |
398d8ee1 KN |
1425 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1426 | (SCM obj, SCM setter), | |
1427 | "") | |
1428 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1429 | { |
c312aca7 | 1430 | SCM_ASSERT (SCM_STRUCTP (obj) |
80662eda MD |
1431 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
1432 | || SCM_I_ENTITYP (obj)), | |
1433 | obj, | |
1434 | SCM_ARG1, | |
398d8ee1 | 1435 | FUNC_NAME); |
80662eda | 1436 | if (SCM_I_ENTITYP (obj)) |
322ec19d | 1437 | SCM_SET_ENTITY_SETTER (obj, setter); |
80662eda MD |
1438 | else |
1439 | SCM_OPERATOR_CLASS (obj)->setter = setter; | |
1440 | return SCM_UNSPECIFIED; | |
1441 | } | |
398d8ee1 | 1442 | #undef FUNC_NAME |
80662eda MD |
1443 | |
1444 | /****************************************************************************** | |
1445 | * | |
1446 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1447 | * |
80662eda MD |
1448 | ******************************************************************************/ |
1449 | ||
398d8ee1 KN |
1450 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1451 | (SCM old, SCM new), | |
1452 | "") | |
1453 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1454 | { |
398d8ee1 KN |
1455 | SCM_VALIDATE_INSTANCE (1, old); |
1456 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1457 | |
6d77c894 | 1458 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1459 | * scratch the old value with new to be correct with GC. |
1460 | * See "Class redefinition protocol above". | |
1461 | */ | |
1462 | SCM_REDEFER_INTS; | |
1463 | { | |
1464 | SCM car = SCM_CAR (old); | |
1465 | SCM cdr = SCM_CDR (old); | |
1466 | SCM_SETCAR (old, SCM_CAR (new)); | |
1467 | SCM_SETCDR (old, SCM_CDR (new)); | |
1468 | SCM_SETCAR (new, car); | |
1469 | SCM_SETCDR (new, cdr); | |
1470 | } | |
1471 | SCM_REALLOW_INTS; | |
1472 | return SCM_UNSPECIFIED; | |
1473 | } | |
398d8ee1 | 1474 | #undef FUNC_NAME |
80662eda | 1475 | |
398d8ee1 KN |
1476 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1477 | (SCM old, SCM new), | |
1478 | "") | |
1479 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1480 | { |
398d8ee1 KN |
1481 | SCM_VALIDATE_CLASS (1, old); |
1482 | SCM_VALIDATE_CLASS (2, new); | |
80662eda MD |
1483 | |
1484 | SCM_REDEFER_INTS; | |
1485 | { | |
1486 | SCM car = SCM_CAR (old); | |
1487 | SCM cdr = SCM_CDR (old); | |
1488 | SCM_SETCAR (old, SCM_CAR (new)); | |
1489 | SCM_SETCDR (old, SCM_CDR (new)); | |
729dbac3 | 1490 | SCM_STRUCT_DATA (old)[scm_vtable_index_vtable] = SCM_UNPACK (old); |
80662eda MD |
1491 | SCM_SETCAR (new, car); |
1492 | SCM_SETCDR (new, cdr); | |
729dbac3 | 1493 | SCM_STRUCT_DATA (new)[scm_vtable_index_vtable] = SCM_UNPACK (new); |
80662eda MD |
1494 | } |
1495 | SCM_REALLOW_INTS; | |
1496 | return SCM_UNSPECIFIED; | |
1497 | } | |
398d8ee1 | 1498 | #undef FUNC_NAME |
80662eda | 1499 | |
398d8ee1 KN |
1500 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1501 | (SCM class), | |
1502 | "") | |
1503 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1504 | { |
398d8ee1 | 1505 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1506 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1507 | return SCM_UNSPECIFIED; | |
1508 | } | |
398d8ee1 | 1509 | #undef FUNC_NAME |
80662eda MD |
1510 | |
1511 | /* When instances change class, they finally get a new body, but | |
1512 | * before that, they go through purgatory in hell. Odd as it may | |
1513 | * seem, this data structure saves us from eternal suffering in | |
1514 | * infinite recursions. | |
1515 | */ | |
1516 | ||
92c2555f | 1517 | static scm_t_bits **hell; |
c014a02e ML |
1518 | static long n_hell = 1; /* one place for the evil one himself */ |
1519 | static long hell_size = 4; | |
2132f0d2 | 1520 | static SCM hell_mutex; |
80662eda | 1521 | |
c014a02e | 1522 | static long |
80662eda MD |
1523 | burnin (SCM o) |
1524 | { | |
c014a02e | 1525 | long i; |
80662eda | 1526 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1527 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1528 | return i; |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static void | |
1533 | go_to_hell (void *o) | |
1534 | { | |
6b80d352 | 1535 | SCM obj = SCM_PACK ((scm_t_bits) o); |
2132f0d2 | 1536 | scm_lock_mutex (hell_mutex); |
80662eda MD |
1537 | if (n_hell == hell_size) |
1538 | { | |
c014a02e | 1539 | long new_size = 2 * hell_size; |
4c9419ac | 1540 | hell = scm_realloc (hell, new_size); |
80662eda MD |
1541 | hell_size = new_size; |
1542 | } | |
6b80d352 | 1543 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1544 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1545 | } |
1546 | ||
1547 | static void | |
1548 | go_to_heaven (void *o) | |
1549 | { | |
2132f0d2 | 1550 | scm_lock_mutex (hell_mutex); |
6b80d352 | 1551 | hell[burnin (SCM_PACK ((scm_t_bits) o))] = hell[--n_hell]; |
2132f0d2 | 1552 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1553 | } |
1554 | ||
6b80d352 DH |
1555 | |
1556 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1557 | ||
80662eda MD |
1558 | static SCM |
1559 | purgatory (void *args) | |
1560 | { | |
6d77c894 | 1561 | return scm_apply_0 (GETVAR (scm_sym_change_class), |
6b80d352 | 1562 | SCM_PACK ((scm_t_bits) args)); |
80662eda MD |
1563 | } |
1564 | ||
38d8927c MD |
1565 | /* This function calls the generic function change-class for all |
1566 | * instances which aren't currently undergoing class change. | |
1567 | */ | |
1568 | ||
80662eda | 1569 | void |
e81d98ec | 1570 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1571 | { |
1572 | if (!burnin (obj)) | |
1573 | scm_internal_dynamic_wind (go_to_hell, purgatory, go_to_heaven, | |
6b80d352 DH |
1574 | (void *) SCM_UNPACK (scm_list_2 (obj, new_class)), |
1575 | (void *) SCM_UNPACK (obj)); | |
80662eda MD |
1576 | } |
1577 | ||
1578 | /****************************************************************************** | |
1579 | * | |
6d77c894 TTN |
1580 | * GGGG FFFFF |
1581 | * G F | |
1582 | * G GG FFF | |
1583 | * G G F | |
80662eda MD |
1584 | * GGG E N E R I C F U N C T I O N S |
1585 | * | |
1586 | * This implementation provides | |
1587 | * - generic functions (with class specializers) | |
1588 | * - multi-methods | |
6d77c894 | 1589 | * - next-method |
80662eda MD |
1590 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1591 | * | |
1592 | ******************************************************************************/ | |
1593 | ||
1594 | SCM_KEYWORD (k_name, "name"); | |
1595 | ||
1596 | SCM_SYMBOL (sym_no_method, "no-method"); | |
1597 | ||
1598 | static SCM list_of_no_method; | |
1599 | ||
1600 | SCM_SYMBOL (scm_sym_args, "args"); | |
1601 | ||
1602 | SCM | |
1603 | scm_make_method_cache (SCM gf) | |
1604 | { | |
1afff620 KN |
1605 | return scm_list_5 (SCM_IM_DISPATCH, |
1606 | scm_sym_args, | |
1607 | SCM_MAKINUM (1), | |
1608 | scm_c_make_vector (SCM_INITIAL_MCACHE_SIZE, | |
1609 | list_of_no_method), | |
1610 | gf); | |
80662eda MD |
1611 | } |
1612 | ||
1613 | static void | |
1614 | clear_method_cache (SCM gf) | |
1615 | { | |
322ec19d ML |
1616 | SCM cache = scm_make_method_cache (gf); |
1617 | SCM_SET_ENTITY_PROCEDURE (gf, cache); | |
dcb410ec | 1618 | SCM_SET_SLOT (gf, scm_si_used_by, SCM_BOOL_F); |
80662eda MD |
1619 | } |
1620 | ||
398d8ee1 KN |
1621 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1622 | (SCM gf), | |
1623 | "") | |
1624 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda MD |
1625 | { |
1626 | SCM used_by; | |
25ba37df | 1627 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
80662eda | 1628 | used_by = SCM_SLOT (gf, scm_si_used_by); |
6b80d352 | 1629 | if (!SCM_FALSEP (used_by)) |
80662eda MD |
1630 | { |
1631 | SCM methods = SCM_SLOT (gf, scm_si_methods); | |
c312aca7 | 1632 | for (; SCM_CONSP (used_by); used_by = SCM_CDR (used_by)) |
80662eda MD |
1633 | scm_sys_invalidate_method_cache_x (SCM_CAR (used_by)); |
1634 | clear_method_cache (gf); | |
c312aca7 | 1635 | for (; SCM_CONSP (methods); methods = SCM_CDR (methods)) |
dcb410ec | 1636 | SCM_SET_SLOT (SCM_CAR (methods), scm_si_code_table, SCM_EOL); |
80662eda MD |
1637 | } |
1638 | { | |
55c4a132 | 1639 | SCM n = SCM_SLOT (gf, scm_si_n_specialized); |
80662eda | 1640 | /* The sign of n is a flag indicating rest args. */ |
55c4a132 | 1641 | SCM_SET_MCACHE_N_SPECIALIZED (SCM_ENTITY_PROCEDURE (gf), n); |
80662eda MD |
1642 | } |
1643 | return SCM_UNSPECIFIED; | |
1644 | } | |
398d8ee1 | 1645 | #undef FUNC_NAME |
80662eda | 1646 | |
398d8ee1 KN |
1647 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1648 | (SCM proc), | |
1649 | "") | |
1650 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1651 | { |
6b80d352 | 1652 | SCM_ASSERT (!SCM_FALSEP (scm_procedure_p (proc)), |
398d8ee1 | 1653 | proc, SCM_ARG1, FUNC_NAME); |
80662eda MD |
1654 | return (scm_subr_p (proc) && SCM_SUBR_GENERIC (proc) |
1655 | ? SCM_BOOL_T | |
1656 | : SCM_BOOL_F); | |
1657 | } | |
398d8ee1 | 1658 | #undef FUNC_NAME |
80662eda | 1659 | |
398d8ee1 KN |
1660 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1661 | (SCM subrs), | |
1662 | "") | |
1663 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1664 | { |
6b80d352 DH |
1665 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
1666 | while (!SCM_NULLP (subrs)) | |
80662eda MD |
1667 | { |
1668 | SCM subr = SCM_CAR (subrs); | |
1669 | SCM_ASSERT (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr), | |
398d8ee1 | 1670 | subr, SCM_ARGn, FUNC_NAME); |
80662eda | 1671 | *SCM_SUBR_GENERIC (subr) |
1afff620 KN |
1672 | = scm_make (scm_list_3 (scm_class_generic, |
1673 | k_name, | |
1674 | SCM_SNAME (subr))); | |
80662eda MD |
1675 | subrs = SCM_CDR (subrs); |
1676 | } | |
1677 | return SCM_UNSPECIFIED; | |
1678 | } | |
398d8ee1 | 1679 | #undef FUNC_NAME |
80662eda | 1680 | |
398d8ee1 KN |
1681 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1682 | (SCM subr), | |
1683 | "") | |
1684 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda MD |
1685 | { |
1686 | if (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr)) | |
1687 | { | |
a48d60b1 MD |
1688 | if (!*SCM_SUBR_GENERIC (subr)) |
1689 | scm_enable_primitive_generic_x (scm_list_1 (subr)); | |
1690 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1691 | } |
db4b4ca6 | 1692 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1693 | } |
398d8ee1 | 1694 | #undef FUNC_NAME |
80662eda | 1695 | |
a48d60b1 MD |
1696 | typedef struct t_extension { |
1697 | struct t_extension *next; | |
1698 | SCM extended; | |
1699 | SCM extension; | |
1700 | } t_extension; | |
1701 | ||
1702 | static t_extension *extensions = 0; | |
1703 | ||
1704 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
1705 | ||
1706 | void | |
1707 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1708 | { | |
1709 | if (goops_loaded_p) | |
1710 | { | |
1711 | SCM gf, gext; | |
1712 | if (!*SCM_SUBR_GENERIC (extended)) | |
1713 | scm_enable_primitive_generic_x (scm_list_1 (extended)); | |
1714 | gf = *SCM_SUBR_GENERIC (extended); | |
1715 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1716 | gf, | |
1717 | SCM_SNAME (extension)); | |
1718 | *SCM_SUBR_GENERIC (extension) = gext; | |
1719 | } | |
1720 | else | |
1721 | { | |
1722 | t_extension *e = scm_malloc (sizeof (t_extension)); | |
1723 | t_extension **loc = &extensions; | |
1724 | /* Make sure that extensions are placed before their own | |
1725 | * extensions in the extensions list. O(N^2) algorithm, but | |
1726 | * extensions of primitive generics are rare. | |
1727 | */ | |
1728 | while (*loc && extension != (*loc)->extended) | |
1729 | loc = &(*loc)->next; | |
1730 | e->next = *loc; | |
1731 | e->extended = extended; | |
1732 | e->extension = extension; | |
1733 | *loc = e; | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | static void | |
1738 | setup_extended_primitive_generics () | |
1739 | { | |
1740 | while (extensions) | |
1741 | { | |
1742 | t_extension *e = extensions; | |
1743 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1744 | extensions = e->next; | |
1745 | free (e); | |
1746 | } | |
1747 | } | |
1748 | ||
80662eda | 1749 | /****************************************************************************** |
6d77c894 | 1750 | * |
80662eda | 1751 | * Protocol for calling a generic fumction |
6d77c894 | 1752 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1753 | * for efficiency reasons): |
1754 | * | |
1755 | * + apply-generic (gf args) | |
1756 | * + compute-applicable-methods (gf args ...) | |
1757 | * + sort-applicable-methods (methods args) | |
1758 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1759 | * |
1760 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1761 | * method. Applying a next-method will call apply-next-method which in |
1762 | * turn will call apply again to call effectively the following method. | |
1763 | * | |
1764 | ******************************************************************************/ | |
1765 | ||
1766 | static int | |
1767 | applicablep (SCM actual, SCM formal) | |
1768 | { | |
79a3dafe DH |
1769 | /* We already know that the cpl is well formed. */ |
1770 | return !SCM_FALSEP (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); | |
80662eda MD |
1771 | } |
1772 | ||
1773 | static int | |
34d19ef6 | 1774 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1775 | { |
1776 | register SCM s1, s2; | |
c014a02e | 1777 | register long i; |
6d77c894 TTN |
1778 | /* |
1779 | * Note: | |
1780 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1781 | * other when we have a dotted parameter list). For instance, with the call |
1782 | * (M 1) | |
1783 | * with | |
1784 | * (define-method M (a . l) ....) | |
6d77c894 | 1785 | * (define-method M (a) ....) |
80662eda MD |
1786 | * |
1787 | * we consider that the second method is more specific. | |
1788 | * | |
1789 | * BTW, targs is an array of types. We don't need it's size since | |
1790 | * we already know that m1 and m2 are applicable (no risk to go past | |
1791 | * the end of this array). | |
1792 | * | |
1793 | */ | |
34d19ef6 | 1794 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
80662eda MD |
1795 | if (SCM_NULLP(s1)) return 1; |
1796 | if (SCM_NULLP(s2)) return 0; | |
1797 | if (SCM_CAR(s1) != SCM_CAR(s2)) { | |
1798 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); | |
6d77c894 | 1799 | |
dcb410ec | 1800 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
80662eda MD |
1801 | if (cs1 == SCM_CAR(l)) |
1802 | return 1; | |
1803 | if (cs2 == SCM_CAR(l)) | |
1804 | return 0; | |
1805 | } | |
1806 | return 0;/* should not occur! */ | |
1807 | } | |
1808 | } | |
1809 | return 0; /* should not occur! */ | |
1810 | } | |
1811 | ||
1812 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1813 | ||
1814 | static SCM | |
c014a02e | 1815 | scm_i_vector2list (SCM l, long len) |
80662eda | 1816 | { |
c014a02e | 1817 | long j; |
00ffa0e7 | 1818 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1819 | |
80662eda | 1820 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
34d19ef6 | 1821 | SCM_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1822 | } |
1823 | return z; | |
1824 | } | |
1825 | ||
1826 | static SCM | |
34d19ef6 | 1827 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1828 | { |
c014a02e | 1829 | long i, j, incr; |
80662eda MD |
1830 | SCM *v, vector = SCM_EOL; |
1831 | SCM buffer[BUFFSIZE]; | |
1832 | SCM save = method_list; | |
1833 | ||
1834 | /* For reasonably sized method_lists we can try to avoid all the | |
1835 | * consing and reorder the list in place... | |
1836 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1837 | */ | |
1838 | if (size <= BUFFSIZE) | |
1839 | { | |
1840 | for (i = 0; i < size; i++) | |
1841 | { | |
1842 | buffer[i] = SCM_CAR (method_list); | |
1843 | method_list = SCM_CDR (method_list); | |
1844 | } | |
1845 | v = buffer; | |
6d77c894 | 1846 | } |
80662eda MD |
1847 | else |
1848 | { | |
1849 | /* Too many elements in method_list to keep everything locally */ | |
1850 | vector = scm_i_vector2list (save, size); | |
34d19ef6 HWN |
1851 | |
1852 | /* | |
1853 | This is a new vector. Don't worry about the write barrier. | |
1854 | We're not allocating elements in this routine, so this should | |
1855 | pose no problem. | |
1856 | */ | |
bbf8d523 | 1857 | v = SCM_WRITABLE_VELTS (vector); |
80662eda MD |
1858 | } |
1859 | ||
6d77c894 | 1860 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
1861 | * small vectors (which is probably mostly the case when we have to |
1862 | * sort a list of applicable methods). | |
1863 | */ | |
1864 | for (incr = size / 2; incr; incr /= 2) | |
1865 | { | |
1866 | for (i = incr; i < size; i++) | |
1867 | { | |
1868 | for (j = i - incr; j >= 0; j -= incr) | |
1869 | { | |
1870 | if (more_specificp (v[j], v[j+incr], targs)) | |
1871 | break; | |
1872 | else | |
1873 | { | |
1874 | SCM tmp = v[j + incr]; | |
1875 | v[j + incr] = v[j]; | |
1876 | v[j] = tmp; | |
1877 | } | |
1878 | } | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | if (size <= BUFFSIZE) | |
1883 | { | |
1884 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
1885 | for (i = 0, method_list = save; i < size; i++, v++) | |
1886 | { | |
1887 | SCM_SETCAR (method_list, *v); | |
1888 | method_list = SCM_CDR (method_list); | |
1889 | } | |
1890 | return save; | |
1891 | } | |
6d77c894 | 1892 | /* If we are here, that's that we did it the hard way... */ |
80662eda MD |
1893 | return scm_vector_to_list (vector); |
1894 | } | |
1895 | ||
1896 | SCM | |
c014a02e | 1897 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 1898 | { |
c014a02e ML |
1899 | register long i; |
1900 | long count = 0; | |
80662eda MD |
1901 | SCM l, fl, applicable = SCM_EOL; |
1902 | SCM save = args; | |
34d19ef6 HWN |
1903 | SCM buffer[BUFFSIZE]; |
1904 | SCM const *types; | |
1905 | SCM *p; | |
1906 | SCM tmp = SCM_EOL; | |
6d77c894 | 1907 | |
80662eda MD |
1908 | /* Build the list of arguments types */ |
1909 | if (len >= BUFFSIZE) { | |
00ffa0e7 | 1910 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); |
80662eda MD |
1911 | /* NOTE: Using pointers to malloced memory won't work if we |
1912 | 1. have preemtive threading, and, | |
1913 | 2. have a GC which moves objects. */ | |
34d19ef6 HWN |
1914 | types = p = SCM_WRITABLE_VELTS(tmp); |
1915 | ||
1916 | /* | |
1917 | note that we don't have to work to reset the generation | |
1918 | count. TMP is a new vector anyway, and it is found | |
1919 | conservatively. | |
1920 | */ | |
80662eda MD |
1921 | } |
1922 | else | |
1923 | types = p = buffer; | |
6d77c894 TTN |
1924 | |
1925 | for ( ; !SCM_NULLP (args); args = SCM_CDR (args)) | |
80662eda | 1926 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 1927 | |
80662eda | 1928 | /* Build a list of all applicable methods */ |
bbf8d523 | 1929 | for (l = scm_generic_function_methods (gf); !SCM_NULLP (l); l = SCM_CDR (l)) |
80662eda MD |
1930 | { |
1931 | fl = SPEC_OF (SCM_CAR (l)); | |
1932 | /* Only accept accessors which match exactly in first arg. */ | |
1933 | if (SCM_ACCESSORP (SCM_CAR (l)) | |
6b80d352 | 1934 | && (SCM_NULLP (fl) || types[0] != SCM_CAR (fl))) |
80662eda MD |
1935 | continue; |
1936 | for (i = 0; ; i++, fl = SCM_CDR (fl)) | |
1937 | { | |
c312aca7 | 1938 | if (SCM_INSTANCEP (fl) |
80662eda MD |
1939 | /* We have a dotted argument list */ |
1940 | || (i >= len && SCM_NULLP (fl))) | |
1941 | { /* both list exhausted */ | |
1942 | applicable = scm_cons (SCM_CAR (l), applicable); | |
1943 | count += 1; | |
1944 | break; | |
1945 | } | |
1946 | if (i >= len | |
1947 | || SCM_NULLP (fl) | |
1948 | || !applicablep (types[i], SCM_CAR (fl))) | |
1949 | break; | |
1950 | } | |
1951 | } | |
1952 | ||
1953 | if (count == 0) | |
1954 | { | |
1955 | if (find_method_p) | |
1956 | return SCM_BOOL_F; | |
1957 | CALL_GF2 ("no-applicable-method", gf, save); | |
1958 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ | |
1959 | return SCM_BOOL_F; | |
1960 | } | |
34d19ef6 | 1961 | |
afc8e572 | 1962 | scm_remember_upto_here_1 (tmp); |
80662eda MD |
1963 | return (count == 1 |
1964 | ? applicable | |
1965 | : sort_applicable_methods (applicable, count, types)); | |
1966 | } | |
1967 | ||
1968 | #if 0 | |
1969 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
1970 | #endif | |
1971 | ||
1972 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
1973 | ||
1974 | SCM | |
1975 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 1976 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 1977 | { |
c014a02e | 1978 | long n; |
398d8ee1 | 1979 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 1980 | n = scm_ilength (args); |
398d8ee1 | 1981 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
1982 | return scm_compute_applicable_methods (gf, args, n, 1); |
1983 | } | |
398d8ee1 | 1984 | #undef FUNC_NAME |
80662eda | 1985 | |
86d31dfe | 1986 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
9a441ddb | 1987 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, scm_sys_compute_applicable_methods)); |
80662eda MD |
1988 | |
1989 | SCM_SYNTAX (s_atslot_ref, "@slot-ref", scm_makmmacro, scm_m_atslot_ref); | |
1990 | ||
1991 | SCM | |
e81d98ec | 1992 | scm_m_atslot_ref (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 1993 | #define FUNC_NAME s_atslot_ref |
80662eda MD |
1994 | { |
1995 | SCM x = SCM_CDR (xorig); | |
160bb34a | 1996 | SCM_ASSYNT (scm_ilength (x) == 2, scm_s_expression, FUNC_NAME); |
e11208ca | 1997 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
1998 | return scm_cons (SCM_IM_SLOT_REF, x); |
1999 | } | |
e11208ca DH |
2000 | #undef FUNC_NAME |
2001 | ||
80662eda MD |
2002 | |
2003 | SCM_SYNTAX (s_atslot_set_x, "@slot-set!", scm_makmmacro, scm_m_atslot_set_x); | |
2004 | ||
2005 | SCM | |
e81d98ec | 2006 | scm_m_atslot_set_x (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 2007 | #define FUNC_NAME s_atslot_set_x |
80662eda MD |
2008 | { |
2009 | SCM x = SCM_CDR (xorig); | |
160bb34a | 2010 | SCM_ASSYNT (scm_ilength (x) == 3, scm_s_expression, FUNC_NAME); |
e11208ca | 2011 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
2012 | return scm_cons (SCM_IM_SLOT_SET_X, x); |
2013 | } | |
e11208ca DH |
2014 | #undef FUNC_NAME |
2015 | ||
80662eda MD |
2016 | |
2017 | SCM_SYNTAX (s_atdispatch, "@dispatch", scm_makmmacro, scm_m_atdispatch); | |
2018 | ||
2019 | SCM_SYMBOL (sym_atdispatch, s_atdispatch); | |
2020 | ||
2021 | SCM | |
2022 | scm_m_atdispatch (SCM xorig, SCM env) | |
ca83b028 | 2023 | #define FUNC_NAME s_atdispatch |
80662eda MD |
2024 | { |
2025 | SCM args, n, v, gf, x = SCM_CDR (xorig); | |
160bb34a | 2026 | SCM_ASSYNT (scm_ilength (x) == 4, scm_s_expression, FUNC_NAME); |
80662eda | 2027 | args = SCM_CAR (x); |
e11208ca DH |
2028 | if (!SCM_CONSP (args) && !SCM_SYMBOLP (args)) |
2029 | SCM_WRONG_TYPE_ARG (SCM_ARG1, args); | |
80662eda MD |
2030 | x = SCM_CDR (x); |
2031 | n = SCM_XEVALCAR (x, env); | |
e11208ca | 2032 | SCM_VALIDATE_INUM (SCM_ARG2, n); |
ca83b028 | 2033 | SCM_ASSERT_RANGE (0, n, SCM_INUM (n) >= 1); |
80662eda MD |
2034 | x = SCM_CDR (x); |
2035 | v = SCM_XEVALCAR (x, env); | |
e11208ca | 2036 | SCM_VALIDATE_VECTOR (SCM_ARG3, v); |
80662eda MD |
2037 | x = SCM_CDR (x); |
2038 | gf = SCM_XEVALCAR (x, env); | |
e11208ca | 2039 | SCM_VALIDATE_PUREGENERIC (SCM_ARG4, gf); |
1afff620 | 2040 | return scm_list_5 (SCM_IM_DISPATCH, args, n, v, gf); |
80662eda | 2041 | } |
ca83b028 DH |
2042 | #undef FUNC_NAME |
2043 | ||
80662eda | 2044 | |
80662eda MD |
2045 | static void |
2046 | lock_cache_mutex (void *m) | |
2047 | { | |
6b80d352 | 2048 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2049 | scm_lock_mutex (mutex); |
2050 | } | |
2051 | ||
2052 | static void | |
2053 | unlock_cache_mutex (void *m) | |
2054 | { | |
6b80d352 | 2055 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2056 | scm_unlock_mutex (mutex); |
2057 | } | |
80662eda MD |
2058 | |
2059 | static SCM | |
2060 | call_memoize_method (void *a) | |
2061 | { | |
6b80d352 | 2062 | SCM args = SCM_PACK ((scm_t_bits) a); |
80662eda MD |
2063 | SCM gf = SCM_CAR (args); |
2064 | SCM x = SCM_CADR (args); | |
2065 | /* First check if another thread has inserted a method between | |
2066 | * the cache miss and locking the mutex. | |
2067 | */ | |
2068 | SCM cmethod = scm_mcache_lookup_cmethod (x, SCM_CDDR (args)); | |
6b80d352 | 2069 | if (!SCM_FALSEP (cmethod)) |
80662eda MD |
2070 | return cmethod; |
2071 | /*fixme* Use scm_apply */ | |
2072 | return CALL_GF3 ("memoize-method!", gf, SCM_CDDR (args), x); | |
2073 | } | |
2074 | ||
2075 | SCM | |
2076 | scm_memoize_method (SCM x, SCM args) | |
2077 | { | |
2078 | SCM gf = SCM_CAR (scm_last_pair (x)); | |
6b80d352 DH |
2079 | return scm_internal_dynamic_wind ( |
2080 | lock_cache_mutex, | |
2081 | call_memoize_method, | |
2082 | unlock_cache_mutex, | |
2083 | (void *) SCM_UNPACK (scm_cons2 (gf, x, args)), | |
2084 | (void *) SCM_UNPACK (SCM_SLOT (gf, scm_si_cache_mutex))); | |
80662eda MD |
2085 | } |
2086 | ||
2087 | /****************************************************************************** | |
2088 | * | |
2089 | * A simple make (which will be redefined later in Scheme) | |
2090 | * This version handles only creation of gf, methods and classes (no instances) | |
2091 | * | |
6d77c894 | 2092 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2093 | * no precaution is taken to be efficient. |
2094 | * | |
2095 | ******************************************************************************/ | |
2096 | ||
2097 | SCM_KEYWORD (k_setter, "setter"); | |
2098 | SCM_KEYWORD (k_specializers, "specializers"); | |
2099 | SCM_KEYWORD (k_procedure, "procedure"); | |
2100 | SCM_KEYWORD (k_dsupers, "dsupers"); | |
2101 | SCM_KEYWORD (k_slots, "slots"); | |
2102 | SCM_KEYWORD (k_gf, "generic-function"); | |
2103 | ||
398d8ee1 KN |
2104 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2105 | (SCM args), | |
27c37006 | 2106 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2107 | "all necessary initialization information.") |
398d8ee1 | 2108 | #define FUNC_NAME s_scm_make |
80662eda MD |
2109 | { |
2110 | SCM class, z; | |
c014a02e | 2111 | long len = scm_ilength (args); |
80662eda MD |
2112 | |
2113 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2114 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2115 | |
2116 | class = SCM_CAR(args); | |
2117 | args = SCM_CDR(args); | |
2118 | ||
f8af5c6d | 2119 | if (class == scm_class_generic || class == scm_class_accessor) |
80662eda | 2120 | { |
80662eda | 2121 | z = scm_make_struct (class, SCM_INUM0, |
bbf8d523 | 2122 | scm_list_5 (SCM_EOL, |
1afff620 KN |
2123 | SCM_INUM0, |
2124 | SCM_BOOL_F, | |
bbf8d523 MD |
2125 | scm_make_mutex (), |
2126 | SCM_EOL)); | |
80662eda MD |
2127 | scm_set_procedure_property_x (z, scm_sym_name, |
2128 | scm_get_keyword (k_name, | |
2129 | args, | |
2130 | SCM_BOOL_F)); | |
2131 | clear_method_cache (z); | |
f8af5c6d | 2132 | if (class == scm_class_accessor) |
80662eda MD |
2133 | { |
2134 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
6b80d352 | 2135 | if (!SCM_FALSEP (setter)) |
80662eda MD |
2136 | scm_sys_set_object_setter_x (z, setter); |
2137 | } | |
2138 | } | |
2139 | else | |
2140 | { | |
2141 | z = scm_sys_allocate_instance (class, args); | |
2142 | ||
2143 | if (class == scm_class_method | |
2144 | || class == scm_class_simple_method | |
f8af5c6d | 2145 | || class == scm_class_accessor_method) |
80662eda | 2146 | { |
6d77c894 | 2147 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2148 | scm_i_get_keyword (k_gf, |
2149 | args, | |
2150 | len - 1, | |
2151 | SCM_BOOL_F, | |
dcb410ec | 2152 | FUNC_NAME)); |
6d77c894 | 2153 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2154 | scm_i_get_keyword (k_specializers, |
2155 | args, | |
2156 | len - 1, | |
2157 | SCM_EOL, | |
dcb410ec | 2158 | FUNC_NAME)); |
6d77c894 | 2159 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2160 | scm_i_get_keyword (k_procedure, |
2161 | args, | |
2162 | len - 1, | |
2163 | SCM_EOL, | |
dcb410ec DH |
2164 | FUNC_NAME)); |
2165 | SCM_SET_SLOT (z, scm_si_code_table, SCM_EOL); | |
80662eda MD |
2166 | } |
2167 | else | |
2168 | { | |
2169 | /* In all the others case, make a new class .... No instance here */ | |
6d77c894 | 2170 | SCM_SET_SLOT (z, scm_si_name, |
80662eda MD |
2171 | scm_i_get_keyword (k_name, |
2172 | args, | |
2173 | len - 1, | |
38ae064c | 2174 | scm_str2symbol ("???"), |
dcb410ec | 2175 | FUNC_NAME)); |
6d77c894 | 2176 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2177 | scm_i_get_keyword (k_dsupers, |
2178 | args, | |
2179 | len - 1, | |
2180 | SCM_EOL, | |
dcb410ec | 2181 | FUNC_NAME)); |
6d77c894 | 2182 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2183 | scm_i_get_keyword (k_slots, |
2184 | args, | |
2185 | len - 1, | |
2186 | SCM_EOL, | |
dcb410ec | 2187 | FUNC_NAME)); |
80662eda MD |
2188 | } |
2189 | } | |
2190 | return z; | |
2191 | } | |
398d8ee1 | 2192 | #undef FUNC_NAME |
80662eda | 2193 | |
398d8ee1 KN |
2194 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2195 | (SCM l), | |
2196 | "") | |
2197 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2198 | { |
2199 | SCM gf; | |
c014a02e | 2200 | long len = scm_ilength (l); |
80662eda MD |
2201 | |
2202 | if (len == 0) | |
398d8ee1 | 2203 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2204 | |
2205 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2206 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2207 | if (SCM_NULLP (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2208 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2209 | |
2210 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2211 | } | |
398d8ee1 | 2212 | #undef FUNC_NAME |
80662eda | 2213 | |
398d8ee1 KN |
2214 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2215 | (SCM m1, SCM m2, SCM targs), | |
2216 | "") | |
2217 | #define FUNC_NAME s_scm_sys_method_more_specific_p | |
80662eda MD |
2218 | { |
2219 | SCM l, v; | |
c014a02e | 2220 | long i, len; |
80662eda | 2221 | |
398d8ee1 KN |
2222 | SCM_VALIDATE_METHOD (1, m1); |
2223 | SCM_VALIDATE_METHOD (2, m2); | |
2224 | SCM_ASSERT ((len = scm_ilength (targs)) != -1, targs, SCM_ARG3, FUNC_NAME); | |
80662eda MD |
2225 | |
2226 | /* Verify that all the arguments of targs are classes and place them in a vector*/ | |
00ffa0e7 | 2227 | v = scm_c_make_vector (len, SCM_EOL); |
80662eda | 2228 | |
6b80d352 | 2229 | for (i = 0, l = targs; !SCM_NULLP (l); i++, l = SCM_CDR (l)) { |
398d8ee1 | 2230 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); |
34d19ef6 | 2231 | SCM_VECTOR_SET (v, i, SCM_CAR(l)); |
80662eda MD |
2232 | } |
2233 | return more_specificp (m1, m2, SCM_VELTS(v)) ? SCM_BOOL_T: SCM_BOOL_F; | |
2234 | } | |
398d8ee1 | 2235 | #undef FUNC_NAME |
6d77c894 TTN |
2236 | |
2237 | ||
80662eda MD |
2238 | |
2239 | /****************************************************************************** | |
2240 | * | |
6d77c894 | 2241 | * Initializations |
80662eda MD |
2242 | * |
2243 | ******************************************************************************/ | |
2244 | ||
74b6d6e4 MD |
2245 | static void |
2246 | fix_cpl (SCM c, SCM before, SCM after) | |
2247 | { | |
2248 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2249 | SCM ls = scm_c_memq (after, cpl); | |
2250 | SCM tail = scm_delq1_x (before, SCM_CDR (ls)); | |
2251 | if (SCM_FALSEP (ls)) | |
2252 | /* if this condition occurs, fix_cpl should not be applied this way */ | |
2253 | abort (); | |
2254 | SCM_SETCAR (ls, before); | |
2255 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2256 | { | |
2257 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2258 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2259 | SCM g_n_s = compute_getters_n_setters (slots); | |
2260 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2261 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2262 | } | |
2263 | } | |
2264 | ||
80662eda MD |
2265 | |
2266 | static void | |
2267 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2268 | { | |
38ae064c | 2269 | SCM tmp = scm_str2symbol (name); |
6d77c894 | 2270 | |
80662eda MD |
2271 | *var = scm_permanent_object (scm_basic_make_class (meta, |
2272 | tmp, | |
2273 | SCM_CONSP (super) | |
2274 | ? super | |
1afff620 | 2275 | : scm_list_1 (super), |
80662eda MD |
2276 | slots)); |
2277 | DEFVAR(tmp, *var); | |
2278 | } | |
2279 | ||
2280 | ||
2281 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2282 | ||
2283 | static void | |
2284 | create_standard_classes (void) | |
2285 | { | |
2286 | SCM slots; | |
6d77c894 TTN |
2287 | SCM method_slots = scm_list_4 (scm_str2symbol ("generic-function"), |
2288 | scm_str2symbol ("specializers"), | |
6b80d352 | 2289 | sym_procedure, |
1afff620 KN |
2290 | scm_str2symbol ("code-table")); |
2291 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("slot-definition"), | |
2292 | k_init_keyword, | |
2293 | k_slot_definition)); | |
1afff620 | 2294 | SCM mutex_slot = scm_list_1 (scm_str2symbol ("make-mutex")); |
bbf8d523 | 2295 | SCM gf_slots = scm_list_5 (scm_str2symbol ("methods"), |
1afff620 KN |
2296 | scm_list_3 (scm_str2symbol ("n-specialized"), |
2297 | k_init_value, | |
2298 | SCM_INUM0), | |
2299 | scm_list_3 (scm_str2symbol ("used-by"), | |
2300 | k_init_value, | |
2301 | SCM_BOOL_F), | |
2302 | scm_list_3 (scm_str2symbol ("cache-mutex"), | |
2303 | k_init_thunk, | |
2304 | scm_closure (scm_list_2 (SCM_EOL, | |
2305 | mutex_slot), | |
bbf8d523 MD |
2306 | SCM_EOL)), |
2307 | scm_list_3 (scm_str2symbol ("extended-by"), | |
2308 | k_init_value, | |
2309 | SCM_EOL)); | |
2310 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("extends"), | |
2311 | k_init_value, | |
2312 | SCM_EOL)); | |
80662eda MD |
2313 | /* Foreign class slot classes */ |
2314 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2315 | scm_class_class, scm_class_top, SCM_EOL); | |
2316 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2317 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2318 | make_stdcls (&scm_class_opaque, "<opaque-slot>", | |
2319 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2320 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2321 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2322 | make_stdcls (&scm_class_self, "<self-slot>", | |
2323 | scm_class_class, | |
74b6d6e4 | 2324 | scm_class_read_only, |
80662eda MD |
2325 | SCM_EOL); |
2326 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", | |
2327 | scm_class_class, | |
1afff620 | 2328 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda MD |
2329 | SCM_EOL); |
2330 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", | |
2331 | scm_class_class, | |
1afff620 | 2332 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2333 | SCM_EOL); |
2334 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2335 | scm_class_class, scm_class_protected, SCM_EOL); | |
2336 | make_stdcls (&scm_class_int, "<int-slot>", | |
2337 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2338 | make_stdcls (&scm_class_float, "<float-slot>", | |
2339 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2340 | make_stdcls (&scm_class_double, "<double-slot>", | |
2341 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2342 | ||
2343 | /* Continue initialization of class <class> */ | |
6d77c894 | 2344 | |
80662eda | 2345 | slots = build_class_class_slots (); |
dcb410ec DH |
2346 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2347 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2348 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2349 | compute_getters_n_setters (slots)); | |
6d77c894 | 2350 | |
80662eda MD |
2351 | make_stdcls (&scm_class_foreign_class, "<foreign-class>", |
2352 | scm_class_class, scm_class_class, | |
1afff620 KN |
2353 | scm_list_2 (scm_list_3 (scm_str2symbol ("constructor"), |
2354 | k_class, | |
2355 | scm_class_opaque), | |
2356 | scm_list_3 (scm_str2symbol ("destructor"), | |
2357 | k_class, | |
2358 | scm_class_opaque))); | |
80662eda MD |
2359 | make_stdcls (&scm_class_foreign_object, "<foreign-object>", |
2360 | scm_class_foreign_class, scm_class_object, SCM_EOL); | |
2361 | SCM_SET_CLASS_FLAGS (scm_class_foreign_object, SCM_CLASSF_FOREIGN); | |
2362 | ||
2363 | /* scm_class_generic functions classes */ | |
2364 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2365 | scm_class_class, scm_class_class, SCM_EOL); | |
2366 | make_stdcls (&scm_class_entity_class, "<entity-class>", | |
2367 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2368 | make_stdcls (&scm_class_operator_class, "<operator-class>", | |
2369 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2370 | make_stdcls (&scm_class_operator_with_setter_class, | |
2371 | "<operator-with-setter-class>", | |
2372 | scm_class_class, scm_class_operator_class, SCM_EOL); | |
2373 | make_stdcls (&scm_class_method, "<method>", | |
2374 | scm_class_class, scm_class_object, method_slots); | |
2375 | make_stdcls (&scm_class_simple_method, "<simple-method>", | |
2376 | scm_class_class, scm_class_method, SCM_EOL); | |
2377 | SCM_SET_CLASS_FLAGS (scm_class_simple_method, SCM_CLASSF_SIMPLE_METHOD); | |
f8af5c6d | 2378 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
80662eda | 2379 | scm_class_class, scm_class_simple_method, amethod_slots); |
f8af5c6d | 2380 | SCM_SET_CLASS_FLAGS (scm_class_accessor_method, SCM_CLASSF_ACCESSOR_METHOD); |
74b6d6e4 MD |
2381 | make_stdcls (&scm_class_applicable, "<applicable>", |
2382 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda | 2383 | make_stdcls (&scm_class_entity, "<entity>", |
74b6d6e4 MD |
2384 | scm_class_entity_class, |
2385 | scm_list_2 (scm_class_object, scm_class_applicable), | |
2386 | SCM_EOL); | |
80662eda MD |
2387 | make_stdcls (&scm_class_entity_with_setter, "<entity-with-setter>", |
2388 | scm_class_entity_class, scm_class_entity, SCM_EOL); | |
2389 | make_stdcls (&scm_class_generic, "<generic>", | |
2390 | scm_class_entity_class, scm_class_entity, gf_slots); | |
2391 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 | 2392 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
f8af5c6d | 2393 | scm_class_entity_class, scm_class_generic, egf_slots); |
bbf8d523 | 2394 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2395 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
2396 | scm_class_entity_class, | |
1afff620 | 2397 | scm_list_2 (scm_class_generic, scm_class_entity_with_setter), |
80662eda | 2398 | SCM_EOL); |
80662eda | 2399 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d MD |
2400 | make_stdcls (&scm_class_accessor, "<accessor>", |
2401 | scm_class_entity_class, scm_class_generic_with_setter, SCM_EOL); | |
2402 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 MD |
2403 | make_stdcls (&scm_class_extended_generic_with_setter, |
2404 | "<extended-generic-with-setter>", | |
2405 | scm_class_entity_class, | |
74b6d6e4 MD |
2406 | scm_list_2 (scm_class_generic_with_setter, |
2407 | scm_class_extended_generic), | |
bbf8d523 MD |
2408 | SCM_EOL); |
2409 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2410 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 MD |
2411 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
2412 | scm_class_entity_class, | |
2413 | scm_list_2 (scm_class_accessor, | |
2414 | scm_class_extended_generic_with_setter), | |
2415 | SCM_EOL); | |
2416 | fix_cpl (scm_class_extended_accessor, | |
2417 | scm_class_extended_generic, scm_class_generic); | |
2418 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); | |
80662eda MD |
2419 | |
2420 | /* Primitive types classes */ | |
2421 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2422 | scm_class_class, scm_class_top, SCM_EOL); | |
2423 | make_stdcls (&scm_class_char, "<char>", | |
2424 | scm_class_class, scm_class_top, SCM_EOL); | |
2425 | make_stdcls (&scm_class_list, "<list>", | |
2426 | scm_class_class, scm_class_top, SCM_EOL); | |
2427 | make_stdcls (&scm_class_pair, "<pair>", | |
2428 | scm_class_class, scm_class_list, SCM_EOL); | |
2429 | make_stdcls (&scm_class_null, "<null>", | |
2430 | scm_class_class, scm_class_list, SCM_EOL); | |
2431 | make_stdcls (&scm_class_string, "<string>", | |
2432 | scm_class_class, scm_class_top, SCM_EOL); | |
2433 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2434 | scm_class_class, scm_class_top, SCM_EOL); | |
2435 | make_stdcls (&scm_class_vector, "<vector>", | |
2436 | scm_class_class, scm_class_top, SCM_EOL); | |
2437 | make_stdcls (&scm_class_number, "<number>", | |
2438 | scm_class_class, scm_class_top, SCM_EOL); | |
2439 | make_stdcls (&scm_class_complex, "<complex>", | |
2440 | scm_class_class, scm_class_number, SCM_EOL); | |
2441 | make_stdcls (&scm_class_real, "<real>", | |
2442 | scm_class_class, scm_class_complex, SCM_EOL); | |
2443 | make_stdcls (&scm_class_integer, "<integer>", | |
2444 | scm_class_class, scm_class_real, SCM_EOL); | |
2445 | make_stdcls (&scm_class_keyword, "<keyword>", | |
2446 | scm_class_class, scm_class_top, SCM_EOL); | |
2447 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2448 | scm_class_class, scm_class_top, SCM_EOL); | |
2449 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2450 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2451 | make_stdcls (&scm_class_procedure_with_setter, "<procedure-with-setter>", |
2452 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2453 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", | |
2454 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2455 | make_stdcls (&scm_class_port, "<port>", | |
2456 | scm_class_class, scm_class_top, SCM_EOL); | |
2457 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2458 | scm_class_class, scm_class_port, SCM_EOL); | |
2459 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2460 | scm_class_class, scm_class_port, SCM_EOL); | |
2461 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2462 | scm_class_class, | |
1afff620 | 2463 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2464 | SCM_EOL); |
2465 | } | |
2466 | ||
2467 | /********************************************************************** | |
2468 | * | |
2469 | * Smob classes | |
2470 | * | |
2471 | **********************************************************************/ | |
2472 | ||
2473 | static SCM | |
74b6d6e4 | 2474 | make_class_from_template (char *template, char *type_name, SCM supers, int applicablep) |
80662eda MD |
2475 | { |
2476 | SCM class, name; | |
2477 | if (type_name) | |
2478 | { | |
2479 | char buffer[100]; | |
2480 | sprintf (buffer, template, type_name); | |
38ae064c | 2481 | name = scm_str2symbol (buffer); |
80662eda MD |
2482 | } |
2483 | else | |
2484 | name = SCM_GOOPS_UNBOUND; | |
2485 | ||
74b6d6e4 MD |
2486 | class = scm_permanent_object (scm_basic_make_class (applicablep |
2487 | ? scm_class_procedure_class | |
2488 | : scm_class_class, | |
80662eda MD |
2489 | name, |
2490 | supers, | |
2491 | SCM_EOL)); | |
2492 | ||
2493 | /* Only define name if doesn't already exist. */ | |
2494 | if (!SCM_GOOPS_UNBOUNDP (name) | |
fdc28395 | 2495 | && SCM_FALSEP (scm_call_2 (scm_goops_lookup_closure, name, SCM_BOOL_F))) |
0ba8a0a5 | 2496 | DEFVAR (name, class); |
80662eda MD |
2497 | return class; |
2498 | } | |
2499 | ||
2500 | SCM | |
74b6d6e4 | 2501 | scm_make_extended_class (char *type_name, int applicablep) |
80662eda MD |
2502 | { |
2503 | return make_class_from_template ("<%s>", | |
2504 | type_name, | |
74b6d6e4 MD |
2505 | scm_list_1 (applicablep |
2506 | ? scm_class_applicable | |
2507 | : scm_class_top), | |
2508 | applicablep); | |
2509 | } | |
2510 | ||
2511 | void | |
2512 | scm_i_inherit_applicable (SCM c) | |
2513 | { | |
2514 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2515 | { | |
2516 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2517 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2518 | /* patch scm_class_applicable into direct-supers */ | |
2519 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
2520 | if (SCM_FALSEP (top)) | |
2521 | dsupers = scm_append (scm_list_2 (dsupers, | |
2522 | scm_list_1 (scm_class_applicable))); | |
2523 | else | |
2524 | { | |
2525 | SCM_SETCAR (top, scm_class_applicable); | |
2526 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2527 | } | |
2528 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2529 | /* patch scm_class_applicable into cpl */ | |
2530 | top = scm_c_memq (scm_class_top, cpl); | |
2531 | if (SCM_FALSEP (top)) | |
2532 | abort (); | |
2533 | else | |
2534 | { | |
2535 | SCM_SETCAR (top, scm_class_applicable); | |
2536 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2537 | } | |
2538 | /* add class to direct-subclasses of scm_class_applicable */ | |
2539 | SCM_SET_SLOT (scm_class_applicable, | |
2540 | scm_si_direct_subclasses, | |
2541 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2542 | scm_si_direct_subclasses))); | |
2543 | } | |
80662eda MD |
2544 | } |
2545 | ||
2546 | static void | |
2547 | create_smob_classes (void) | |
2548 | { | |
c014a02e | 2549 | long i; |
80662eda | 2550 | |
67329a9e | 2551 | scm_smob_class = (SCM *) scm_malloc (255 * sizeof (SCM)); |
80662eda MD |
2552 | for (i = 0; i < 255; ++i) |
2553 | scm_smob_class[i] = 0; | |
2554 | ||
2555 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_big)] = scm_class_integer; | |
2556 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_real)] = scm_class_real; | |
2557 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_complex)] = scm_class_complex; | |
2558 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; | |
6d77c894 | 2559 | |
80662eda MD |
2560 | for (i = 0; i < scm_numsmob; ++i) |
2561 | if (!scm_smob_class[i]) | |
74b6d6e4 MD |
2562 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2563 | scm_smobs[i].apply != 0); | |
80662eda MD |
2564 | } |
2565 | ||
2566 | void | |
c014a02e | 2567 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2568 | { |
2569 | SCM c, class = make_class_from_template ("<%s-port>", | |
2570 | type_name, | |
74b6d6e4 MD |
2571 | scm_list_1 (scm_class_port), |
2572 | 0); | |
80662eda MD |
2573 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2574 | = make_class_from_template ("<%s-input-port>", | |
2575 | type_name, | |
74b6d6e4 MD |
2576 | scm_list_2 (class, scm_class_input_port), |
2577 | 0); | |
80662eda MD |
2578 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2579 | = make_class_from_template ("<%s-output-port>", | |
2580 | type_name, | |
74b6d6e4 MD |
2581 | scm_list_2 (class, scm_class_output_port), |
2582 | 0); | |
80662eda MD |
2583 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2584 | = c | |
2585 | = make_class_from_template ("<%s-input-output-port>", | |
2586 | type_name, | |
74b6d6e4 MD |
2587 | scm_list_2 (class, scm_class_input_output_port), |
2588 | 0); | |
80662eda | 2589 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2590 | SCM_SET_SLOT (c, scm_si_cpl, |
2591 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2592 | } |
2593 | ||
2594 | static void | |
2595 | create_port_classes (void) | |
2596 | { | |
c014a02e | 2597 | long i; |
80662eda | 2598 | |
67329a9e | 2599 | scm_port_class = (SCM *) scm_malloc (3 * 256 * sizeof (SCM)); |
80662eda MD |
2600 | for (i = 0; i < 3 * 256; ++i) |
2601 | scm_port_class[i] = 0; | |
2602 | ||
2603 | for (i = 0; i < scm_numptob; ++i) | |
2604 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2605 | } | |
2606 | ||
2607 | static SCM | |
74b6d6e4 MD |
2608 | make_struct_class (void *closure SCM_UNUSED, |
2609 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2610 | { |
6b80d352 | 2611 | if (!SCM_FALSEP (SCM_STRUCT_TABLE_NAME (data))) |
80662eda MD |
2612 | SCM_SET_STRUCT_TABLE_CLASS (data, |
2613 | scm_make_extended_class | |
74b6d6e4 MD |
2614 | (SCM_SYMBOL_CHARS (SCM_STRUCT_TABLE_NAME (data)), |
2615 | SCM_CLASS_FLAGS (vtable) & SCM_CLASSF_OPERATOR)); | |
80662eda MD |
2616 | return SCM_UNSPECIFIED; |
2617 | } | |
2618 | ||
2619 | static void | |
2620 | create_struct_classes (void) | |
2621 | { | |
2622 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, scm_struct_table); | |
2623 | } | |
2624 | ||
2625 | /********************************************************************** | |
2626 | * | |
2627 | * C interface | |
2628 | * | |
2629 | **********************************************************************/ | |
2630 | ||
2631 | void | |
2632 | scm_load_goops () | |
2633 | { | |
2634 | if (!goops_loaded_p) | |
abd28220 | 2635 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2636 | } |
2637 | ||
e11208ca | 2638 | |
80662eda MD |
2639 | SCM |
2640 | scm_make_foreign_object (SCM class, SCM initargs) | |
e11208ca | 2641 | #define FUNC_NAME s_scm_make |
80662eda MD |
2642 | { |
2643 | void * (*constructor) (SCM) | |
2644 | = (void * (*) (SCM)) SCM_SLOT (class, scm_si_constructor); | |
e11208ca | 2645 | if (constructor == 0) |
1afff620 | 2646 | SCM_MISC_ERROR ("Can't make instances of class ~S", scm_list_1 (class)); |
80662eda MD |
2647 | return scm_wrap_object (class, constructor (initargs)); |
2648 | } | |
e11208ca DH |
2649 | #undef FUNC_NAME |
2650 | ||
80662eda MD |
2651 | |
2652 | static size_t | |
2653 | scm_free_foreign_object (SCM *class, SCM *data) | |
2654 | { | |
2655 | size_t (*destructor) (void *) | |
2656 | = (size_t (*) (void *)) class[scm_si_destructor]; | |
2657 | return destructor (data); | |
2658 | } | |
2659 | ||
2660 | SCM | |
2661 | scm_make_class (SCM meta, char *s_name, SCM supers, size_t size, | |
2662 | void * (*constructor) (SCM initargs), | |
2663 | size_t (*destructor) (void *)) | |
2664 | { | |
2665 | SCM name, class; | |
38ae064c | 2666 | name = scm_str2symbol (s_name); |
6b80d352 | 2667 | if (SCM_NULLP (supers)) |
1afff620 | 2668 | supers = scm_list_1 (scm_class_foreign_object); |
80662eda MD |
2669 | class = scm_basic_basic_make_class (meta, name, supers, SCM_EOL); |
2670 | scm_sys_inherit_magic_x (class, supers); | |
2671 | ||
2672 | if (destructor != 0) | |
2673 | { | |
dcb410ec | 2674 | SCM_SET_SLOT (class, scm_si_destructor, (SCM) destructor); |
80662eda MD |
2675 | SCM_SET_CLASS_DESTRUCTOR (class, scm_free_foreign_object); |
2676 | } | |
2677 | else if (size > 0) | |
2678 | { | |
2679 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
2680 | SCM_SET_CLASS_INSTANCE_SIZE (class, size); | |
2681 | } | |
6d77c894 | 2682 | |
dcb410ec DH |
2683 | SCM_SET_SLOT (class, scm_si_layout, scm_str2symbol ("")); |
2684 | SCM_SET_SLOT (class, scm_si_constructor, (SCM) constructor); | |
80662eda MD |
2685 | |
2686 | return class; | |
2687 | } | |
2688 | ||
2689 | SCM_SYMBOL (sym_o, "o"); | |
2690 | SCM_SYMBOL (sym_x, "x"); | |
2691 | ||
2692 | SCM_KEYWORD (k_accessor, "accessor"); | |
2693 | SCM_KEYWORD (k_getter, "getter"); | |
2694 | ||
2695 | static SCM | |
e81d98ec | 2696 | default_setter (SCM obj SCM_UNUSED, SCM c SCM_UNUSED) |
80662eda MD |
2697 | { |
2698 | scm_misc_error ("slot-set!", "read-only slot", SCM_EOL); | |
2699 | return 0; | |
2700 | } | |
2701 | ||
2702 | void | |
2703 | scm_add_slot (SCM class, char *slot_name, SCM slot_class, | |
2704 | SCM (*getter) (SCM obj), | |
2705 | SCM (*setter) (SCM obj, SCM x), | |
2706 | char *accessor_name) | |
2707 | { | |
2708 | { | |
9a441ddb MV |
2709 | SCM get = scm_c_make_subr ("goops:get", scm_tc7_subr_1, getter); |
2710 | SCM set = scm_c_make_subr ("goops:set", scm_tc7_subr_2, | |
2711 | setter ? setter : default_setter); | |
1afff620 KN |
2712 | SCM getm = scm_closure (scm_list_2 (scm_list_1 (sym_o), |
2713 | scm_list_2 (get, sym_o)), | |
80662eda | 2714 | SCM_EOL); |
1afff620 KN |
2715 | SCM setm = scm_closure (scm_list_2 (scm_list_2 (sym_o, sym_x), |
2716 | scm_list_3 (set, sym_o, sym_x)), | |
80662eda MD |
2717 | SCM_EOL); |
2718 | { | |
38ae064c DH |
2719 | SCM name = scm_str2symbol (slot_name); |
2720 | SCM aname = scm_str2symbol (accessor_name); | |
80662eda | 2721 | SCM gf = scm_ensure_accessor (aname); |
1afff620 KN |
2722 | SCM slot = scm_list_5 (name, |
2723 | k_class, | |
2724 | slot_class, | |
2725 | setter ? k_accessor : k_getter, | |
2726 | gf); | |
2727 | SCM gns = scm_list_4 (name, SCM_BOOL_F, get, set); | |
2728 | ||
f8af5c6d | 2729 | scm_add_method (gf, scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2730 | k_specializers, |
2731 | scm_list_1 (class), | |
2732 | k_procedure, | |
2733 | getm))); | |
80662eda | 2734 | scm_add_method (scm_setter (gf), |
f8af5c6d | 2735 | scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2736 | k_specializers, |
2737 | scm_list_2 (class, scm_class_top), | |
2738 | k_procedure, | |
2739 | setm))); | |
80662eda | 2740 | DEFVAR (aname, gf); |
6d77c894 | 2741 | |
dcb410ec | 2742 | SCM_SET_SLOT (class, scm_si_slots, |
1afff620 KN |
2743 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_slots), |
2744 | scm_list_1 (slot)))); | |
dcb410ec | 2745 | SCM_SET_SLOT (class, scm_si_getters_n_setters, |
1afff620 KN |
2746 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_getters_n_setters), |
2747 | scm_list_1 (gns)))); | |
80662eda MD |
2748 | } |
2749 | } | |
6d77c894 | 2750 | { |
c014a02e | 2751 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda | 2752 | |
dcb410ec | 2753 | SCM_SET_SLOT (class, scm_si_nfields, SCM_MAKINUM (n + 1)); |
80662eda MD |
2754 | } |
2755 | } | |
2756 | ||
2757 | SCM | |
2758 | scm_wrap_object (SCM class, void *data) | |
2759 | { | |
228a24ef DH |
2760 | return scm_double_cell (SCM_UNPACK (SCM_CDR (class)) | scm_tc3_struct, |
2761 | (scm_t_bits) data, | |
2762 | 0, 0); | |
80662eda MD |
2763 | } |
2764 | ||
2765 | SCM scm_components; | |
2766 | ||
2767 | SCM | |
2768 | scm_wrap_component (SCM class, SCM container, void *data) | |
2769 | { | |
2770 | SCM obj = scm_wrap_object (class, data); | |
2771 | SCM handle = scm_hash_fn_create_handle_x (scm_components, | |
2772 | obj, | |
2773 | SCM_BOOL_F, | |
2774 | scm_struct_ihashq, | |
2775 | scm_sloppy_assq, | |
2776 | 0); | |
2777 | SCM_SETCDR (handle, container); | |
2778 | return obj; | |
2779 | } | |
2780 | ||
2781 | SCM | |
2782 | scm_ensure_accessor (SCM name) | |
2783 | { | |
fdc28395 | 2784 | SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); |
f8af5c6d | 2785 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2786 | { |
1afff620 | 2787 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2788 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2789 | k_name, name, k_setter, gf)); |
80662eda MD |
2790 | } |
2791 | return gf; | |
2792 | } | |
2793 | ||
2794 | SCM_SYMBOL (sym_internal_add_method_x, "internal-add-method!"); | |
2795 | ||
2796 | void | |
2797 | scm_add_method (SCM gf, SCM m) | |
2798 | { | |
1afff620 | 2799 | scm_eval (scm_list_3 (sym_internal_add_method_x, gf, m), scm_module_goops); |
80662eda MD |
2800 | } |
2801 | ||
2802 | #ifdef GUILE_DEBUG | |
2803 | /* | |
2804 | * Debugging utilities | |
2805 | */ | |
2806 | ||
398d8ee1 KN |
2807 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2808 | (SCM obj), | |
6bcefd15 | 2809 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2810 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2811 | { |
25ba37df | 2812 | return SCM_BOOL (SCM_PUREGENERICP (obj)); |
80662eda | 2813 | } |
398d8ee1 | 2814 | #undef FUNC_NAME |
80662eda MD |
2815 | |
2816 | #endif /* GUILE_DEBUG */ | |
2817 | ||
2818 | /* | |
2819 | * Initialization | |
2820 | */ | |
2821 | ||
398d8ee1 KN |
2822 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2823 | (), | |
6bcefd15 MG |
2824 | "Announce that GOOPS is loaded and perform initialization\n" |
2825 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2826 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2827 | { |
2828 | goops_loaded_p = 1; | |
86d31dfe MV |
2829 | var_compute_applicable_methods = |
2830 | scm_sym2var (sym_compute_applicable_methods, scm_goops_lookup_closure, | |
2831 | SCM_BOOL_F); | |
a48d60b1 | 2832 | setup_extended_primitive_generics (); |
80662eda MD |
2833 | return SCM_UNSPECIFIED; |
2834 | } | |
398d8ee1 | 2835 | #undef FUNC_NAME |
80662eda MD |
2836 | |
2837 | SCM scm_module_goops; | |
2838 | ||
abd28220 MV |
2839 | SCM |
2840 | scm_init_goops_builtins (void) | |
80662eda | 2841 | { |
abd28220 | 2842 | scm_module_goops = scm_current_module (); |
80662eda MD |
2843 | scm_goops_lookup_closure = scm_module_lookup_closure (scm_module_goops); |
2844 | ||
6d77c894 | 2845 | /* Not really necessary right now, but who knows... |
0ba8a0a5 MV |
2846 | */ |
2847 | scm_permanent_object (scm_module_goops); | |
2848 | scm_permanent_object (scm_goops_lookup_closure); | |
2849 | ||
80662eda MD |
2850 | scm_components = scm_permanent_object (scm_make_weak_key_hash_table |
2851 | (SCM_MAKINUM (37))); | |
2852 | ||
2853 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); | |
2854 | ||
2855 | #include "libguile/goops.x" | |
2856 | ||
1afff620 | 2857 | list_of_no_method = scm_permanent_object (scm_list_1 (sym_no_method)); |
80662eda | 2858 | |
4c9419ac | 2859 | hell = scm_malloc (hell_size); |
2132f0d2 | 2860 | hell_mutex = scm_permanent_object (scm_make_mutex ()); |
80662eda MD |
2861 | |
2862 | create_basic_classes (); | |
2863 | create_standard_classes (); | |
2864 | create_smob_classes (); | |
2865 | create_struct_classes (); | |
2866 | create_port_classes (); | |
2867 | ||
2868 | { | |
38ae064c | 2869 | SCM name = scm_str2symbol ("no-applicable-method"); |
80662eda | 2870 | scm_no_applicable_method |
1afff620 KN |
2871 | = scm_permanent_object (scm_make (scm_list_3 (scm_class_generic, |
2872 | k_name, | |
2873 | name))); | |
80662eda MD |
2874 | DEFVAR (name, scm_no_applicable_method); |
2875 | } | |
abd28220 MV |
2876 | |
2877 | return SCM_UNSPECIFIED; | |
80662eda MD |
2878 | } |
2879 | ||
2880 | void | |
abd28220 | 2881 | scm_init_goops () |
80662eda | 2882 | { |
9a441ddb MV |
2883 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2884 | scm_init_goops_builtins); | |
80662eda | 2885 | } |
23437298 DH |
2886 | |
2887 | /* | |
2888 | Local Variables: | |
2889 | c-file-style: "gnu" | |
2890 | End: | |
2891 | */ |