Commit | Line | Data |
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bbf8d523 | 1 | /* Copyright (C) 1998,1999,2000,2001, 2002, 2003 Free Software Foundation, Inc. |
6d77c894 | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
6d77c894 | 7 | * |
73be1d9e | 8 | * This library is distributed in the hope that it will be useful, |
80662eda | 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
6d77c894 | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
80662eda MD |
17 | \f |
18 | ||
19 | /* This software is a derivative work of other copyrighted softwares; the | |
20 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
21 | * | |
22 | * This file is based upon stklos.c from the STk distribution by | |
23 | * Erick Gallesio <eg@unice.fr>. | |
24 | */ | |
25 | ||
26 | #include <stdio.h> | |
27 | ||
28 | #include "libguile/_scm.h" | |
29 | #include "libguile/alist.h" | |
30 | #include "libguile/debug.h" | |
31 | #include "libguile/dynl.h" | |
32 | #include "libguile/dynwind.h" | |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/hashtab.h" | |
35 | #include "libguile/keywords.h" | |
36 | #include "libguile/macros.h" | |
37 | #include "libguile/modules.h" | |
38 | #include "libguile/objects.h" | |
39 | #include "libguile/ports.h" | |
40 | #include "libguile/procprop.h" | |
41 | #include "libguile/random.h" | |
fdc28395 | 42 | #include "libguile/root.h" |
80662eda MD |
43 | #include "libguile/smob.h" |
44 | #include "libguile/strings.h" | |
45 | #include "libguile/strports.h" | |
46 | #include "libguile/vectors.h" | |
47 | #include "libguile/weaks.h" | |
48 | ||
ca83b028 | 49 | #include "libguile/validate.h" |
80662eda MD |
50 | #include "libguile/goops.h" |
51 | ||
80662eda MD |
52 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
53 | ||
34d19ef6 | 54 | #define DEFVAR(v, val) \ |
1afff620 KN |
55 | { scm_eval (scm_list_3 (scm_sym_define_public, (v), (val)), \ |
56 | scm_module_goops); } | |
80662eda MD |
57 | /* Temporary hack until we get the new module system */ |
58 | /*fixme* Should optimize by keeping track of the variable object itself */ | |
fdc28395 KN |
59 | #define GETVAR(v) (SCM_VARIABLE_REF (scm_call_2 (scm_goops_lookup_closure, \ |
60 | (v), SCM_BOOL_F))) | |
80662eda MD |
61 | |
62 | /* Fixme: Should use already interned symbols */ | |
34d19ef6 | 63 | #define CALL_GF1(name, a) (scm_call_1 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 64 | a)) |
34d19ef6 | 65 | #define CALL_GF2(name, a, b) (scm_call_2 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 66 | a, b)) |
34d19ef6 | 67 | #define CALL_GF3(name, a, b, c) (scm_call_3 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 68 | a, b, c)) |
34d19ef6 | 69 | #define CALL_GF4(name, a, b, c, d) (scm_call_4 (GETVAR (scm_str2symbol (name)), \ |
1afff620 | 70 | a, b, c, d)) |
80662eda MD |
71 | |
72 | /* Class redefinition protocol: | |
73 | ||
74 | A class is represented by a heap header h1 which points to a | |
75 | malloc:ed memory block m1. | |
76 | ||
77 | When a new version of a class is created, a new header h2 and | |
78 | memory block m2 are allocated. The headers h1 and h2 then switch | |
79 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
80 | bound to h1 will point to the new class at the same time as h2 will | |
81 | be a handle which the GC will us to free m1. | |
82 | ||
83 | The `redefined' slot of m1 will be set to point to h1. An old | |
84 | instance will have it's class pointer (the CAR of the heap header) | |
85 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates | |
86 | the class modification and the new class pointer can be found via | |
87 | h1. | |
88 | */ | |
89 | ||
80662eda MD |
90 | /* The following definition is located in libguile/objects.h: |
91 | #define SCM_OBJ_CLASS_REDEF(x) (SCM_STRUCT_VTABLE_DATA(x)[scm_si_redefined]) | |
92 | */ | |
93 | ||
94 | #define TEST_CHANGE_CLASS(obj, class) \ | |
95 | { \ | |
96 | class = SCM_CLASS_OF (obj); \ | |
97 | if (SCM_OBJ_CLASS_REDEF (obj) != SCM_BOOL_F) \ | |
38d8927c | 98 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj)); \ |
80662eda MD |
99 | } |
100 | ||
101 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
102 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
103 | ||
104 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
105 | #define SCM_GOOPS_UNBOUNDP(x) ((x) == SCM_GOOPS_UNBOUND) | |
106 | ||
107 | static int goops_loaded_p = 0; | |
92c2555f | 108 | static scm_t_rstate *goops_rstate; |
80662eda MD |
109 | |
110 | static SCM scm_goops_lookup_closure; | |
111 | ||
112 | /* Some classes are defined in libguile/objects.c. */ | |
113 | SCM scm_class_top, scm_class_object, scm_class_class; | |
74b6d6e4 | 114 | SCM scm_class_applicable; |
80662eda | 115 | SCM scm_class_entity, scm_class_entity_with_setter; |
bbf8d523 | 116 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 117 | SCM scm_class_accessor; |
bbf8d523 | 118 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 119 | SCM scm_class_extended_accessor; |
bbf8d523 | 120 | SCM scm_class_method; |
f8af5c6d | 121 | SCM scm_class_simple_method, scm_class_accessor_method; |
80662eda MD |
122 | SCM scm_class_procedure_class; |
123 | SCM scm_class_operator_class, scm_class_operator_with_setter_class; | |
124 | SCM scm_class_entity_class; | |
125 | SCM scm_class_number, scm_class_list; | |
126 | SCM scm_class_keyword; | |
127 | SCM scm_class_port, scm_class_input_output_port; | |
128 | SCM scm_class_input_port, scm_class_output_port; | |
129 | SCM scm_class_foreign_class, scm_class_foreign_object; | |
130 | SCM scm_class_foreign_slot; | |
131 | SCM scm_class_self, scm_class_protected; | |
132 | SCM scm_class_opaque, scm_class_read_only; | |
133 | SCM scm_class_protected_opaque, scm_class_protected_read_only; | |
134 | SCM scm_class_scm; | |
135 | SCM scm_class_int, scm_class_float, scm_class_double; | |
136 | ||
137 | SCM_SYMBOL (scm_sym_define_public, "define-public"); | |
138 | ||
139 | static SCM scm_make_unbound (void); | |
140 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
141 | static SCM scm_assert_bound (SCM value, SCM obj); |
142 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
143 | static SCM scm_sys_goops_loaded (void); | |
80662eda MD |
144 | |
145 | /****************************************************************************** | |
146 | * | |
147 | * Compute-cpl | |
148 | * | |
bbf8d523 MD |
149 | * This version doesn't fully handle multiple-inheritance. It serves |
150 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
151 | * |
152 | ******************************************************************************/ | |
153 | ||
80662eda MD |
154 | static SCM |
155 | map (SCM (*proc) (SCM), SCM ls) | |
156 | { | |
6b80d352 | 157 | if (SCM_NULLP (ls)) |
80662eda | 158 | return ls; |
6b80d352 DH |
159 | else |
160 | { | |
161 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
162 | SCM h = res; | |
163 | ls = SCM_CDR (ls); | |
164 | while (!SCM_NULLP (ls)) | |
165 | { | |
166 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
167 | h = SCM_CDR (h); | |
168 | ls = SCM_CDR (ls); | |
169 | } | |
170 | return res; | |
171 | } | |
80662eda MD |
172 | } |
173 | ||
174 | static SCM | |
175 | filter_cpl (SCM ls) | |
176 | { | |
177 | SCM res = SCM_EOL; | |
6b80d352 | 178 | while (!SCM_NULLP (ls)) |
80662eda MD |
179 | { |
180 | SCM el = SCM_CAR (ls); | |
79a3dafe | 181 | if (SCM_FALSEP (scm_c_memq (el, res))) |
80662eda MD |
182 | res = scm_cons (el, res); |
183 | ls = SCM_CDR (ls); | |
184 | } | |
185 | return res; | |
186 | } | |
187 | ||
188 | static SCM | |
189 | compute_cpl (SCM class) | |
190 | { | |
191 | if (goops_loaded_p) | |
192 | return CALL_GF1 ("compute-cpl", class); | |
193 | else | |
194 | { | |
195 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
196 | SCM ls = scm_append (scm_acons (class, supers, | |
197 | map (compute_cpl, supers))); | |
198 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
199 | } | |
200 | } | |
201 | ||
202 | /****************************************************************************** | |
203 | * | |
204 | * compute-slots | |
205 | * | |
206 | ******************************************************************************/ | |
207 | ||
208 | static SCM | |
209 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
210 | { | |
211 | SCM tmp; | |
212 | ||
213 | if (SCM_NULLP (l)) | |
214 | return res; | |
215 | ||
216 | tmp = SCM_CAAR (l); | |
c312aca7 | 217 | if (!SCM_SYMBOLP (tmp)) |
1afff620 | 218 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 219 | |
79a3dafe | 220 | if (SCM_FALSEP (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
221 | res = scm_cons (SCM_CAR (l), res); |
222 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
223 | } | |
6d77c894 | 224 | |
80662eda MD |
225 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
226 | } | |
227 | ||
228 | static SCM | |
229 | build_slots_list (SCM dslots, SCM cpl) | |
230 | { | |
231 | register SCM res = dslots; | |
232 | ||
6b80d352 | 233 | for (cpl = SCM_CDR (cpl); !SCM_NULLP (cpl); cpl = SCM_CDR (cpl)) |
1afff620 KN |
234 | res = scm_append (scm_list_2 (SCM_SLOT (SCM_CAR (cpl), |
235 | scm_si_direct_slots), | |
236 | res)); | |
80662eda MD |
237 | |
238 | /* res contains a list of slots. Remove slots which appears more than once */ | |
239 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
240 | } | |
241 | ||
242 | static SCM | |
243 | maplist (SCM ls) | |
244 | { | |
245 | SCM orig = ls; | |
6b80d352 | 246 | while (!SCM_NULLP (ls)) |
80662eda | 247 | { |
c312aca7 | 248 | if (!SCM_CONSP (SCM_CAR (ls))) |
80662eda MD |
249 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
250 | ls = SCM_CDR (ls); | |
251 | } | |
252 | return orig; | |
253 | } | |
254 | ||
80662eda | 255 | |
23437298 DH |
256 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
257 | (SCM class), | |
5352393c MG |
258 | "Return a list consisting of the names of all slots belonging to\n" |
259 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 260 | "its superclasses.") |
23437298 | 261 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 262 | { |
398d8ee1 | 263 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
264 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
265 | SCM_SLOT (class, scm_si_cpl)); | |
266 | } | |
23437298 DH |
267 | #undef FUNC_NAME |
268 | ||
80662eda MD |
269 | |
270 | /****************************************************************************** | |
271 | * | |
272 | * compute-getters-n-setters | |
6d77c894 TTN |
273 | * |
274 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 275 | * classes and will be overloaded in Scheme. |
80662eda MD |
276 | * |
277 | ******************************************************************************/ | |
278 | ||
279 | SCM_KEYWORD (k_init_value, "init-value"); | |
280 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
281 | ||
282 | static SCM | |
283 | compute_getters_n_setters (SCM slots) | |
284 | { | |
285 | SCM res = SCM_EOL; | |
286 | SCM *cdrloc = &res; | |
c014a02e | 287 | long i = 0; |
80662eda | 288 | |
6b80d352 | 289 | for ( ; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
290 | { |
291 | SCM init = SCM_BOOL_F; | |
292 | SCM options = SCM_CDAR (slots); | |
6b80d352 | 293 | if (!SCM_NULLP (options)) |
80662eda MD |
294 | { |
295 | init = scm_get_keyword (k_init_value, options, 0); | |
296 | if (init) | |
bbf8d523 MD |
297 | init = scm_closure (scm_list_2 (SCM_EOL, |
298 | scm_list_2 (scm_sym_quote, init)), | |
299 | SCM_EOL); | |
80662eda MD |
300 | else |
301 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
302 | } | |
303 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
304 | scm_cons (init, | |
305 | SCM_MAKINUM (i++))), | |
306 | SCM_EOL); | |
307 | cdrloc = SCM_CDRLOC (*cdrloc); | |
308 | } | |
309 | return res; | |
310 | } | |
311 | ||
312 | /****************************************************************************** | |
313 | * | |
314 | * initialize-object | |
315 | * | |
316 | ******************************************************************************/ | |
317 | ||
318 | /*fixme* Manufacture keywords in advance */ | |
319 | SCM | |
c014a02e | 320 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 321 | { |
c014a02e | 322 | long i; |
23437298 DH |
323 | |
324 | for (i = 0; i != len; i += 2) | |
80662eda | 325 | { |
23437298 DH |
326 | SCM obj = SCM_CAR (l); |
327 | ||
328 | if (!SCM_KEYWORDP (obj)) | |
1afff620 | 329 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
23437298 | 330 | else if (SCM_EQ_P (obj, key)) |
80662eda | 331 | return SCM_CADR (l); |
23437298 DH |
332 | else |
333 | l = SCM_CDDR (l); | |
80662eda | 334 | } |
23437298 | 335 | |
80662eda MD |
336 | return default_value; |
337 | } | |
338 | ||
80662eda | 339 | |
23437298 DH |
340 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
341 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
342 | "Determine an associated value for the keyword @var{key} from\n" |
343 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
344 | "number of elements, where, starting with the first, every\n" | |
345 | "second element is a keyword, followed by its associated value.\n" | |
346 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
347 | "@var{default_value} is returned.") | |
23437298 | 348 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 349 | { |
c014a02e | 350 | long len; |
23437298 DH |
351 | |
352 | SCM_ASSERT (SCM_KEYWORDP (key), key, SCM_ARG1, FUNC_NAME); | |
80662eda | 353 | len = scm_ilength (l); |
b6311c08 | 354 | if (len < 0 || len % 2 == 1) |
1afff620 | 355 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
356 | |
357 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 358 | } |
23437298 DH |
359 | #undef FUNC_NAME |
360 | ||
80662eda | 361 | |
80662eda MD |
362 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
363 | ||
364 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
365 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
366 | ||
398d8ee1 KN |
367 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
368 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
369 | "Initialize the object @var{obj} with the given arguments\n" |
370 | "@var{initargs}.") | |
398d8ee1 | 371 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
372 | { |
373 | SCM tmp, get_n_set, slots; | |
374 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 375 | long n_initargs; |
80662eda | 376 | |
398d8ee1 | 377 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 378 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 379 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 380 | |
80662eda MD |
381 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
382 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 383 | |
80662eda MD |
384 | /* See for each slot how it must be initialized */ |
385 | for (; | |
6b80d352 | 386 | !SCM_NULLP (slots); |
80662eda MD |
387 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
388 | { | |
389 | SCM slot_name = SCM_CAR (slots); | |
390 | SCM slot_value = 0; | |
6d77c894 | 391 | |
6b80d352 | 392 | if (!SCM_NULLP (SCM_CDR (slot_name))) |
80662eda MD |
393 | { |
394 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 395 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 396 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 397 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 398 | scm_list_1 (slot_name)); |
80662eda MD |
399 | tmp = scm_i_get_keyword (k_init_keyword, |
400 | SCM_CDR (slot_name), | |
401 | n, | |
402 | 0, | |
398d8ee1 | 403 | FUNC_NAME); |
80662eda MD |
404 | slot_name = SCM_CAR (slot_name); |
405 | if (tmp) | |
406 | { | |
407 | /* an initarg was provided for this slot */ | |
c312aca7 | 408 | if (!SCM_KEYWORDP (tmp)) |
398d8ee1 | 409 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 410 | scm_list_1 (tmp)); |
80662eda MD |
411 | slot_value = scm_i_get_keyword (tmp, |
412 | initargs, | |
413 | n_initargs, | |
414 | 0, | |
398d8ee1 | 415 | FUNC_NAME); |
80662eda MD |
416 | } |
417 | } | |
418 | ||
419 | if (slot_value) | |
420 | /* set slot to provided value */ | |
421 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
422 | else | |
423 | { | |
424 | /* set slot to its :init-form if it exists */ | |
425 | tmp = SCM_CADAR (get_n_set); | |
426 | if (tmp != SCM_BOOL_F) | |
427 | { | |
428 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
429 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
430 | { | |
431 | SCM env = SCM_EXTEND_ENV (SCM_EOL, SCM_EOL, SCM_ENV (tmp)); | |
432 | set_slot_value (class, | |
433 | obj, | |
434 | SCM_CAR (get_n_set), | |
f9450cdb | 435 | scm_eval_body (SCM_CLOSURE_BODY (tmp), env)); |
80662eda MD |
436 | } |
437 | } | |
438 | } | |
439 | } | |
6d77c894 | 440 | |
80662eda MD |
441 | return obj; |
442 | } | |
398d8ee1 | 443 | #undef FUNC_NAME |
80662eda MD |
444 | |
445 | ||
446 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
447 | SCM_KEYWORD (k_allocation, "allocation"); |
448 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 449 | |
398d8ee1 KN |
450 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
451 | (SCM class), | |
452 | "") | |
453 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 454 | { |
6b80d352 DH |
455 | SCM slots, nfields; |
456 | unsigned long int n, i; | |
457 | char *s; | |
80662eda | 458 | |
398d8ee1 | 459 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda MD |
460 | slots = SCM_SLOT (class, scm_si_slots); |
461 | nfields = SCM_SLOT (class, scm_si_nfields); | |
462 | if (!SCM_INUMP (nfields) || SCM_INUM (nfields) < 0) | |
398d8ee1 | 463 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 464 | scm_list_1 (nfields)); |
80662eda MD |
465 | n = 2 * SCM_INUM (nfields); |
466 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 | |
467 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 468 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 469 | scm_list_1 (nfields)); |
6d77c894 | 470 | |
4c9419ac | 471 | s = n > 0 ? scm_malloc (n) : 0; |
80662eda MD |
472 | for (i = 0; i < n; i += 2) |
473 | { | |
6b80d352 | 474 | long len; |
b46fae00 | 475 | SCM type, allocation; |
6b80d352 DH |
476 | char p, a; |
477 | ||
c312aca7 | 478 | if (!SCM_CONSP (slots)) |
6b80d352 | 479 | SCM_MISC_ERROR ("too few slot definitions", SCM_EOL); |
80662eda | 480 | len = scm_ilength (SCM_CDAR (slots)); |
b46fae00 MD |
481 | allocation = scm_i_get_keyword (k_allocation, SCM_CDAR (slots), |
482 | len, k_instance, FUNC_NAME); | |
483 | while (!SCM_EQ_P (allocation, k_instance)) | |
484 | { | |
485 | slots = SCM_CDR (slots); | |
486 | len = scm_ilength (SCM_CDAR (slots)); | |
487 | allocation = scm_i_get_keyword (k_allocation, SCM_CDAR (slots), | |
488 | len, k_instance, FUNC_NAME); | |
489 | } | |
490 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), | |
491 | len, SCM_BOOL_F, FUNC_NAME); | |
6b80d352 | 492 | if (SCM_FALSEP (type)) |
80662eda | 493 | { |
6b80d352 DH |
494 | p = 'p'; |
495 | a = 'w'; | |
80662eda MD |
496 | } |
497 | else | |
498 | { | |
6b80d352 DH |
499 | if (!SCM_CLASSP (type)) |
500 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); | |
501 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) | |
502 | { | |
503 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
504 | p = 's'; | |
505 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
506 | p = 'p'; | |
507 | else | |
508 | p = 'u'; | |
509 | ||
510 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
511 | a = 'o'; | |
512 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
513 | a = 'r'; | |
514 | else | |
515 | a = 'w'; | |
516 | } | |
517 | else | |
518 | { | |
519 | p = 'p'; | |
520 | a = 'w'; | |
521 | } | |
80662eda MD |
522 | } |
523 | s[i] = p; | |
524 | s[i + 1] = a; | |
525 | slots = SCM_CDR (slots); | |
526 | } | |
dcb410ec | 527 | SCM_SET_SLOT (class, scm_si_layout, scm_mem2symbol (s, n)); |
80662eda | 528 | if (s) |
4c9419ac | 529 | free (s); |
80662eda MD |
530 | return SCM_UNSPECIFIED; |
531 | } | |
398d8ee1 | 532 | #undef FUNC_NAME |
80662eda MD |
533 | |
534 | static void prep_hashsets (SCM); | |
535 | ||
398d8ee1 KN |
536 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
537 | (SCM class, SCM dsupers), | |
538 | "") | |
539 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda MD |
540 | { |
541 | SCM ls = dsupers; | |
c014a02e | 542 | long flags = 0; |
398d8ee1 | 543 | SCM_VALIDATE_INSTANCE (1, class); |
6b80d352 | 544 | while (!SCM_NULLP (ls)) |
80662eda | 545 | { |
c312aca7 | 546 | SCM_ASSERT (SCM_CONSP (ls) |
80662eda MD |
547 | && SCM_INSTANCEP (SCM_CAR (ls)), |
548 | dsupers, | |
549 | SCM_ARG2, | |
398d8ee1 | 550 | FUNC_NAME); |
80662eda MD |
551 | flags |= SCM_CLASS_FLAGS (SCM_CAR (ls)); |
552 | ls = SCM_CDR (ls); | |
553 | } | |
554 | flags &= SCM_CLASSF_INHERIT; | |
555 | if (flags & SCM_CLASSF_ENTITY) | |
556 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_entity); | |
557 | else | |
558 | { | |
c014a02e | 559 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda MD |
560 | #if 0 |
561 | /* | |
4c9419ac | 562 | * We could avoid calling scm_gc_malloc in the allocation code |
80662eda MD |
563 | * (in which case the following two lines are needed). Instead |
564 | * we make 0-slot instances non-light, so that the light case | |
565 | * can be handled without special cases. | |
566 | */ | |
567 | if (n == 0) | |
568 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_0); | |
569 | #endif | |
570 | if (n > 0 && !(flags & SCM_CLASSF_METACLASS)) | |
571 | { | |
572 | /* NOTE: The following depends on scm_struct_i_size. */ | |
573 | flags |= SCM_STRUCTF_LIGHT + n * sizeof (SCM); /* use light representation */ | |
574 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
575 | } | |
576 | } | |
577 | SCM_SET_CLASS_FLAGS (class, flags); | |
578 | ||
579 | prep_hashsets (class); | |
6d77c894 | 580 | |
80662eda MD |
581 | return SCM_UNSPECIFIED; |
582 | } | |
398d8ee1 | 583 | #undef FUNC_NAME |
80662eda MD |
584 | |
585 | void | |
586 | prep_hashsets (SCM class) | |
587 | { | |
dcb410ec | 588 | unsigned int i; |
80662eda MD |
589 | |
590 | for (i = 0; i < 7; ++i) | |
dcb410ec | 591 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
592 | } |
593 | ||
594 | /******************************************************************************/ | |
595 | ||
596 | SCM | |
597 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
598 | { | |
599 | SCM z, cpl, slots, nfields, g_n_s; | |
600 | ||
601 | /* Allocate one instance */ | |
602 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
603 | ||
604 | /* Initialize its slots */ | |
dcb410ec | 605 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
606 | cpl = compute_cpl (z); |
607 | slots = build_slots_list (maplist (dslots), cpl); | |
608 | nfields = SCM_MAKINUM (scm_ilength (slots)); | |
609 | g_n_s = compute_getters_n_setters (slots); | |
610 | ||
dcb410ec DH |
611 | SCM_SET_SLOT (z, scm_si_name, name); |
612 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); | |
613 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
614 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
615 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
616 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
617 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
618 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
619 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
620 | SCM_SET_SLOT (z, scm_si_environment, | |
621 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
622 | |
623 | /* Add this class in the direct-subclasses slot of dsupers */ | |
624 | { | |
625 | SCM tmp; | |
dcb410ec DH |
626 | for (tmp = dsupers; !SCM_NULLP (tmp); tmp = SCM_CDR (tmp)) |
627 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, | |
628 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
629 | scm_si_direct_subclasses))); | |
80662eda MD |
630 | } |
631 | ||
632 | /* Support for the underlying structs: */ | |
633 | SCM_SET_CLASS_FLAGS (z, (class == scm_class_entity_class | |
634 | ? (SCM_CLASSF_GOOPS_OR_VALID | |
635 | | SCM_CLASSF_OPERATOR | |
636 | | SCM_CLASSF_ENTITY) | |
637 | : class == scm_class_operator_class | |
638 | ? SCM_CLASSF_GOOPS_OR_VALID | SCM_CLASSF_OPERATOR | |
639 | : SCM_CLASSF_GOOPS_OR_VALID)); | |
640 | return z; | |
641 | } | |
642 | ||
643 | SCM | |
644 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
645 | { | |
646 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
647 | scm_sys_inherit_magic_x (z, dsupers); | |
648 | scm_sys_prep_layout_x (z); | |
649 | return z; | |
650 | } | |
651 | ||
652 | /******************************************************************************/ | |
653 | ||
6b80d352 DH |
654 | SCM_SYMBOL (sym_layout, "layout"); |
655 | SCM_SYMBOL (sym_vcell, "vcell"); | |
656 | SCM_SYMBOL (sym_vtable, "vtable"); | |
657 | SCM_SYMBOL (sym_print, "print"); | |
658 | SCM_SYMBOL (sym_procedure, "procedure"); | |
659 | SCM_SYMBOL (sym_setter, "setter"); | |
660 | SCM_SYMBOL (sym_redefined, "redefined"); | |
661 | SCM_SYMBOL (sym_h0, "h0"); | |
662 | SCM_SYMBOL (sym_h1, "h1"); | |
663 | SCM_SYMBOL (sym_h2, "h2"); | |
664 | SCM_SYMBOL (sym_h3, "h3"); | |
665 | SCM_SYMBOL (sym_h4, "h4"); | |
666 | SCM_SYMBOL (sym_h5, "h5"); | |
667 | SCM_SYMBOL (sym_h6, "h6"); | |
668 | SCM_SYMBOL (sym_h7, "h7"); | |
669 | SCM_SYMBOL (sym_name, "name"); | |
670 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
671 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
672 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
673 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
674 | SCM_SYMBOL (sym_cpl, "cpl"); | |
675 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
676 | SCM_SYMBOL (sym_slots, "slots"); | |
677 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
678 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
679 | SCM_SYMBOL (sym_nfields, "nfields"); | |
680 | SCM_SYMBOL (sym_environment, "environment"); | |
681 | ||
682 | ||
80662eda MD |
683 | static SCM |
684 | build_class_class_slots () | |
685 | { | |
6b80d352 DH |
686 | return scm_list_n ( |
687 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
6b80d352 DH |
688 | scm_list_3 (sym_vtable, k_class, scm_class_self), |
689 | scm_list_1 (sym_print), | |
690 | scm_list_3 (sym_procedure, k_class, scm_class_protected_opaque), | |
691 | scm_list_3 (sym_setter, k_class, scm_class_protected_opaque), | |
692 | scm_list_1 (sym_redefined), | |
693 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
694 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
695 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
696 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
697 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
698 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
699 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
700 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
701 | scm_list_1 (sym_name), | |
702 | scm_list_1 (sym_direct_supers), | |
703 | scm_list_1 (sym_direct_slots), | |
704 | scm_list_1 (sym_direct_subclasses), | |
705 | scm_list_1 (sym_direct_methods), | |
706 | scm_list_1 (sym_cpl), | |
707 | scm_list_1 (sym_default_slot_definition_class), | |
708 | scm_list_1 (sym_slots), | |
709 | scm_list_1 (sym_getters_n_setters), | |
710 | scm_list_1 (sym_keyword_access), | |
711 | scm_list_1 (sym_nfields), | |
712 | scm_list_1 (sym_environment), | |
713 | SCM_UNDEFINED); | |
80662eda MD |
714 | } |
715 | ||
716 | static void | |
717 | create_basic_classes (void) | |
718 | { | |
719 | /* SCM slots_of_class = build_class_class_slots (); */ | |
720 | ||
721 | /**** <scm_class_class> ****/ | |
722 | SCM cs = scm_makfrom0str (SCM_CLASS_CLASS_LAYOUT | |
723 | + 2 * scm_vtable_offset_user); | |
38ae064c | 724 | SCM name = scm_str2symbol ("<class>"); |
80662eda MD |
725 | scm_class_class = scm_permanent_object (scm_make_vtable_vtable (cs, |
726 | SCM_INUM0, | |
727 | SCM_EOL)); | |
728 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID | |
729 | | SCM_CLASSF_METACLASS)); | |
730 | ||
dcb410ec DH |
731 | SCM_SET_SLOT (scm_class_class, scm_si_name, name); |
732 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ | |
733 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
734 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 735 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
736 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
737 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
738 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, SCM_MAKINUM (SCM_N_CLASS_SLOTS)); | |
739 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
740 | compute_getters_n_setters (slots_of_class)); */ | |
741 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
742 | SCM_SET_SLOT (scm_class_class, scm_si_environment, | |
743 | scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE)); | |
80662eda MD |
744 | |
745 | prep_hashsets (scm_class_class); | |
746 | ||
747 | DEFVAR(name, scm_class_class); | |
748 | ||
749 | /**** <scm_class_top> ****/ | |
38ae064c | 750 | name = scm_str2symbol ("<top>"); |
80662eda MD |
751 | scm_class_top = scm_permanent_object (scm_basic_make_class (scm_class_class, |
752 | name, | |
753 | SCM_EOL, | |
754 | SCM_EOL)); | |
755 | ||
756 | DEFVAR(name, scm_class_top); | |
6d77c894 | 757 | |
80662eda | 758 | /**** <scm_class_object> ****/ |
38ae064c | 759 | name = scm_str2symbol ("<object>"); |
80662eda MD |
760 | scm_class_object = scm_permanent_object (scm_basic_make_class (scm_class_class, |
761 | name, | |
1afff620 | 762 | scm_list_1 (scm_class_top), |
80662eda MD |
763 | SCM_EOL)); |
764 | ||
765 | DEFVAR (name, scm_class_object); | |
766 | ||
767 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 768 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 769 | |
1afff620 KN |
770 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
771 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
772 | } |
773 | ||
774 | /******************************************************************************/ | |
775 | ||
398d8ee1 KN |
776 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
777 | (SCM obj), | |
6bcefd15 | 778 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 779 | #define FUNC_NAME s_scm_instance_p |
80662eda | 780 | { |
c312aca7 | 781 | return SCM_BOOL (SCM_INSTANCEP (obj)); |
80662eda | 782 | } |
398d8ee1 | 783 | #undef FUNC_NAME |
80662eda | 784 | |
80662eda MD |
785 | |
786 | /****************************************************************************** | |
6d77c894 | 787 | * |
80662eda MD |
788 | * Meta object accessors |
789 | * | |
790 | ******************************************************************************/ | |
398d8ee1 KN |
791 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
792 | (SCM obj), | |
6bcefd15 | 793 | "Return the class name of @var{obj}.") |
398d8ee1 | 794 | #define FUNC_NAME s_scm_class_name |
80662eda | 795 | { |
398d8ee1 | 796 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 797 | return scm_slot_ref (obj, sym_name); |
80662eda | 798 | } |
398d8ee1 | 799 | #undef FUNC_NAME |
80662eda | 800 | |
398d8ee1 KN |
801 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
802 | (SCM obj), | |
6bcefd15 | 803 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 804 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 805 | { |
398d8ee1 | 806 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 807 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 808 | } |
398d8ee1 | 809 | #undef FUNC_NAME |
80662eda | 810 | |
398d8ee1 KN |
811 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
812 | (SCM obj), | |
6bcefd15 | 813 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 814 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 815 | { |
398d8ee1 | 816 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 817 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 818 | } |
398d8ee1 | 819 | #undef FUNC_NAME |
80662eda | 820 | |
398d8ee1 KN |
821 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
822 | (SCM obj), | |
6bcefd15 | 823 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 824 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 825 | { |
398d8ee1 | 826 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 827 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 828 | } |
398d8ee1 | 829 | #undef FUNC_NAME |
80662eda | 830 | |
398d8ee1 KN |
831 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
832 | (SCM obj), | |
6bcefd15 | 833 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 834 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 835 | { |
398d8ee1 | 836 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 837 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 838 | } |
398d8ee1 | 839 | #undef FUNC_NAME |
80662eda | 840 | |
398d8ee1 KN |
841 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
842 | (SCM obj), | |
6bcefd15 | 843 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 844 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 845 | { |
398d8ee1 | 846 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 847 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 848 | } |
398d8ee1 | 849 | #undef FUNC_NAME |
80662eda | 850 | |
398d8ee1 KN |
851 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
852 | (SCM obj), | |
6bcefd15 | 853 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 854 | #define FUNC_NAME s_scm_class_slots |
80662eda | 855 | { |
398d8ee1 | 856 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 857 | return scm_slot_ref (obj, sym_slots); |
80662eda | 858 | } |
398d8ee1 | 859 | #undef FUNC_NAME |
80662eda | 860 | |
398d8ee1 KN |
861 | SCM_DEFINE (scm_class_environment, "class-environment", 1, 0, 0, |
862 | (SCM obj), | |
6bcefd15 | 863 | "Return the environment of the class @var{obj}.") |
398d8ee1 | 864 | #define FUNC_NAME s_scm_class_environment |
80662eda | 865 | { |
398d8ee1 | 866 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 867 | return scm_slot_ref(obj, sym_environment); |
80662eda | 868 | } |
398d8ee1 | 869 | #undef FUNC_NAME |
80662eda MD |
870 | |
871 | ||
398d8ee1 KN |
872 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
873 | (SCM obj), | |
6bcefd15 | 874 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 875 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 876 | { |
398d8ee1 | 877 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
878 | return scm_procedure_property (obj, scm_sym_name); |
879 | } | |
398d8ee1 | 880 | #undef FUNC_NAME |
80662eda | 881 | |
bbf8d523 MD |
882 | SCM_SYMBOL (sym_methods, "methods"); |
883 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
884 | SCM_SYMBOL (sym_extends, "extends"); | |
885 | ||
886 | static | |
887 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
888 | { | |
889 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
890 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
891 | while (!SCM_NULLP (gfs)) | |
892 | { | |
893 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
894 | gfs = SCM_CDR (gfs); | |
895 | } | |
896 | return method_lists; | |
897 | } | |
898 | ||
899 | static | |
900 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
901 | { | |
902 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
903 | { | |
904 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
905 | while (!SCM_NULLP (gfs)) | |
906 | { | |
907 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
908 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
909 | method_lists), | |
910 | SCM_CAR (gfs)); | |
911 | gfs = SCM_CDR (gfs); | |
912 | } | |
913 | } | |
914 | return method_lists; | |
915 | } | |
916 | ||
398d8ee1 KN |
917 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
918 | (SCM obj), | |
6bcefd15 | 919 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 920 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 921 | { |
bbf8d523 | 922 | SCM methods; |
398d8ee1 | 923 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
924 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
925 | methods = fold_downward_gf_methods (methods, obj); | |
926 | return scm_append (methods); | |
80662eda | 927 | } |
398d8ee1 | 928 | #undef FUNC_NAME |
80662eda | 929 | |
398d8ee1 KN |
930 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
931 | (SCM obj), | |
bb2c02f2 | 932 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 933 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 934 | { |
398d8ee1 | 935 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 936 | return scm_slot_ref (obj, scm_str2symbol ("generic-function")); |
80662eda | 937 | } |
398d8ee1 | 938 | #undef FUNC_NAME |
80662eda | 939 | |
398d8ee1 KN |
940 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
941 | (SCM obj), | |
6bcefd15 | 942 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 943 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 944 | { |
398d8ee1 | 945 | SCM_VALIDATE_METHOD (1, obj); |
38ae064c | 946 | return scm_slot_ref (obj, scm_str2symbol ("specializers")); |
80662eda | 947 | } |
398d8ee1 | 948 | #undef FUNC_NAME |
80662eda | 949 | |
398d8ee1 KN |
950 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
951 | (SCM obj), | |
6bcefd15 | 952 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 953 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 954 | { |
398d8ee1 | 955 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 956 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 957 | } |
398d8ee1 | 958 | #undef FUNC_NAME |
80662eda | 959 | |
398d8ee1 KN |
960 | SCM_DEFINE (scm_accessor_method_slot_definition, "accessor-method-slot-definition", 1, 0, 0, |
961 | (SCM obj), | |
6bcefd15 | 962 | "Return the slot definition of the accessor @var{obj}.") |
398d8ee1 | 963 | #define FUNC_NAME s_scm_accessor_method_slot_definition |
80662eda | 964 | { |
398d8ee1 | 965 | SCM_VALIDATE_ACCESSOR (1, obj); |
38ae064c | 966 | return scm_slot_ref (obj, scm_str2symbol ("slot-definition")); |
398d8ee1 KN |
967 | } |
968 | #undef FUNC_NAME | |
80662eda | 969 | |
5e03762c MD |
970 | SCM_DEFINE (scm_sys_tag_body, "%tag-body", 1, 0, 0, |
971 | (SCM body), | |
87e7741d | 972 | "Internal GOOPS magic---don't use this function!") |
5e03762c MD |
973 | #define FUNC_NAME s_scm_sys_tag_body |
974 | { | |
975 | return scm_cons (SCM_IM_LAMBDA, body); | |
87e7741d MD |
976 | } |
977 | #undef FUNC_NAME | |
80662eda MD |
978 | |
979 | /****************************************************************************** | |
980 | * | |
981 | * S l o t a c c e s s | |
982 | * | |
983 | ******************************************************************************/ | |
984 | ||
398d8ee1 KN |
985 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
986 | (), | |
6bcefd15 | 987 | "Return the unbound value.") |
398d8ee1 | 988 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
989 | { |
990 | return SCM_GOOPS_UNBOUND; | |
991 | } | |
398d8ee1 | 992 | #undef FUNC_NAME |
80662eda | 993 | |
398d8ee1 KN |
994 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
995 | (SCM obj), | |
6bcefd15 | 996 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 997 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
998 | { |
999 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1000 | } | |
398d8ee1 | 1001 | #undef FUNC_NAME |
80662eda | 1002 | |
398d8ee1 KN |
1003 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1004 | (SCM value, SCM obj), | |
6bcefd15 MG |
1005 | "Return @var{value} if it is bound, and invoke the\n" |
1006 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1007 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1008 | { |
1009 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1010 | return CALL_GF1 ("slot-unbound", obj); | |
1011 | return value; | |
1012 | } | |
398d8ee1 | 1013 | #undef FUNC_NAME |
80662eda | 1014 | |
398d8ee1 KN |
1015 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1016 | (SCM obj, SCM index), | |
6bcefd15 MG |
1017 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1018 | "the value from @var{obj}.") | |
398d8ee1 | 1019 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda MD |
1020 | { |
1021 | SCM value = SCM_SLOT (obj, SCM_INUM (index)); | |
1022 | if (SCM_GOOPS_UNBOUNDP (value)) | |
1023 | return CALL_GF1 ("slot-unbound", obj); | |
1024 | return value; | |
1025 | } | |
398d8ee1 | 1026 | #undef FUNC_NAME |
80662eda | 1027 | |
398d8ee1 KN |
1028 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1029 | (SCM obj, SCM index), | |
6bcefd15 | 1030 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1031 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1032 | { |
6b80d352 | 1033 | unsigned long int i; |
80662eda | 1034 | |
398d8ee1 KN |
1035 | SCM_VALIDATE_INSTANCE (1, obj); |
1036 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1037 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1038 | i = SCM_INUM (index); |
6b80d352 DH |
1039 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1040 | ||
80662eda MD |
1041 | return scm_at_assert_bound_ref (obj, index); |
1042 | } | |
ca83b028 DH |
1043 | #undef FUNC_NAME |
1044 | ||
398d8ee1 KN |
1045 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1046 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1047 | "Set the slot with index @var{index} in @var{obj} to\n" |
1048 | "@var{value}.") | |
398d8ee1 | 1049 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1050 | { |
6b80d352 | 1051 | unsigned long int i; |
80662eda | 1052 | |
398d8ee1 KN |
1053 | SCM_VALIDATE_INSTANCE (1, obj); |
1054 | SCM_VALIDATE_INUM (2, index); | |
6b80d352 | 1055 | SCM_ASSERT_RANGE (2, index, SCM_INUM (index) >= 0); |
80662eda | 1056 | i = SCM_INUM (index); |
6b80d352 DH |
1057 | SCM_ASSERT_RANGE (2, index, i < SCM_NUMBER_OF_SLOTS (obj)); |
1058 | ||
dcb410ec | 1059 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1060 | |
80662eda MD |
1061 | return SCM_UNSPECIFIED; |
1062 | } | |
ca83b028 DH |
1063 | #undef FUNC_NAME |
1064 | ||
80662eda MD |
1065 | |
1066 | /** Utilities **/ | |
1067 | ||
1068 | /* In the future, this function will return the effective slot | |
1069 | * definition associated with SLOT_NAME. Now it just returns some of | |
1070 | * the information which will be stored in the effective slot | |
1071 | * definition. | |
1072 | */ | |
1073 | ||
1074 | static SCM | |
1075 | slot_definition_using_name (SCM class, SCM slot_name) | |
1076 | { | |
1077 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
6b80d352 | 1078 | for (; !SCM_NULLP (slots); slots = SCM_CDR (slots)) |
80662eda MD |
1079 | if (SCM_CAAR (slots) == slot_name) |
1080 | return SCM_CAR (slots); | |
1081 | return SCM_BOOL_F; | |
1082 | } | |
1083 | ||
1084 | static SCM | |
e81d98ec | 1085 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
80662eda MD |
1086 | { |
1087 | SCM access = SCM_CDDR (slotdef); | |
1088 | /* Two cases here: | |
1089 | * - access is an integer (the offset of this slot in the slots vector) | |
1090 | * - otherwise (car access) is the getter function to apply | |
23437298 | 1091 | */ |
80662eda MD |
1092 | if (SCM_INUMP (access)) |
1093 | return SCM_SLOT (obj, SCM_INUM (access)); | |
1094 | else | |
1095 | { | |
6d77c894 | 1096 | /* We must evaluate (apply (car access) (list obj)) |
80662eda MD |
1097 | * where (car access) is known to be a closure of arity 1 */ |
1098 | register SCM code, env; | |
1099 | ||
1100 | code = SCM_CAR (access); | |
1101 | if (!SCM_CLOSUREP (code)) | |
1102 | return SCM_SUBRF (code) (obj); | |
726d810a | 1103 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1104 | scm_list_1 (obj), |
80662eda MD |
1105 | SCM_ENV (code)); |
1106 | /* Evaluate the closure body */ | |
f9450cdb | 1107 | return scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1108 | } |
1109 | } | |
1110 | ||
1111 | static SCM | |
1112 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1113 | { | |
1114 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1115 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1116 | return get_slot_value (class, obj, slotdef); |
1117 | else | |
1118 | return CALL_GF3 ("slot-missing", class, obj, slot_name); | |
1119 | } | |
1120 | ||
1121 | static SCM | |
e81d98ec | 1122 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
80662eda MD |
1123 | { |
1124 | SCM access = SCM_CDDR (slotdef); | |
1125 | /* Two cases here: | |
1126 | * - access is an integer (the offset of this slot in the slots vector) | |
1127 | * - otherwise (cadr access) is the setter function to apply | |
1128 | */ | |
1129 | if (SCM_INUMP (access)) | |
dcb410ec | 1130 | SCM_SET_SLOT (obj, SCM_INUM (access), value); |
80662eda MD |
1131 | else |
1132 | { | |
1133 | /* We must evaluate (apply (cadr l) (list obj value)) | |
1134 | * where (cadr l) is known to be a closure of arity 2 */ | |
1135 | register SCM code, env; | |
1136 | ||
1137 | code = SCM_CADR (access); | |
1138 | if (!SCM_CLOSUREP (code)) | |
1139 | SCM_SUBRF (code) (obj, value); | |
1140 | else | |
1141 | { | |
726d810a | 1142 | env = SCM_EXTEND_ENV (SCM_CLOSURE_FORMALS (code), |
1afff620 | 1143 | scm_list_2 (obj, value), |
80662eda MD |
1144 | SCM_ENV (code)); |
1145 | /* Evaluate the closure body */ | |
f9450cdb | 1146 | scm_eval_body (SCM_CLOSURE_BODY (code), env); |
80662eda MD |
1147 | } |
1148 | } | |
1149 | return SCM_UNSPECIFIED; | |
1150 | } | |
1151 | ||
1152 | static SCM | |
1153 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1154 | { | |
1155 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
6b80d352 | 1156 | if (!SCM_FALSEP (slotdef)) |
80662eda MD |
1157 | return set_slot_value (class, obj, slotdef, value); |
1158 | else | |
1159 | return CALL_GF4 ("slot-missing", class, obj, slot_name, value); | |
1160 | } | |
1161 | ||
1162 | static SCM | |
e81d98ec | 1163 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1164 | { |
1165 | register SCM l; | |
1166 | ||
729dbac3 DH |
1167 | for (l = SCM_ACCESSORS_OF (obj); !SCM_NULLP (l); l = SCM_CDR (l)) |
1168 | if (SCM_EQ_P (SCM_CAAR (l), slot_name)) | |
80662eda MD |
1169 | return SCM_BOOL_T; |
1170 | ||
1171 | return SCM_BOOL_F; | |
1172 | } | |
1173 | ||
80662eda MD |
1174 | /* ======================================== */ |
1175 | ||
23437298 DH |
1176 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1177 | (SCM class, SCM obj, SCM slot_name), | |
1178 | "") | |
1179 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1180 | { |
1181 | SCM res; | |
1182 | ||
398d8ee1 KN |
1183 | SCM_VALIDATE_CLASS (1, class); |
1184 | SCM_VALIDATE_INSTANCE (2, obj); | |
1185 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1186 | |
1187 | res = get_slot_value_using_name (class, obj, slot_name); | |
1188 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1189 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1190 | return res; | |
1191 | } | |
23437298 | 1192 | #undef FUNC_NAME |
80662eda | 1193 | |
23437298 DH |
1194 | |
1195 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1196 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1197 | "") | |
1198 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1199 | { |
398d8ee1 KN |
1200 | SCM_VALIDATE_CLASS (1, class); |
1201 | SCM_VALIDATE_INSTANCE (2, obj); | |
1202 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1203 | |
80662eda MD |
1204 | return set_slot_value_using_name (class, obj, slot_name, value); |
1205 | } | |
23437298 DH |
1206 | #undef FUNC_NAME |
1207 | ||
80662eda | 1208 | |
398d8ee1 KN |
1209 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1210 | (SCM class, SCM obj, SCM slot_name), | |
1211 | "") | |
1212 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1213 | { |
398d8ee1 KN |
1214 | SCM_VALIDATE_CLASS (1, class); |
1215 | SCM_VALIDATE_INSTANCE (2, obj); | |
1216 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1217 | |
1218 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1219 | ? SCM_BOOL_F | |
1220 | : SCM_BOOL_T); | |
1221 | } | |
398d8ee1 | 1222 | #undef FUNC_NAME |
80662eda | 1223 | |
398d8ee1 KN |
1224 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1225 | (SCM class, SCM obj, SCM slot_name), | |
1226 | "") | |
1227 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1228 | { | |
1229 | SCM_VALIDATE_CLASS (1, class); | |
1230 | SCM_VALIDATE_INSTANCE (2, obj); | |
1231 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1232 | return test_slot_existence (class, obj, slot_name); |
1233 | } | |
398d8ee1 | 1234 | #undef FUNC_NAME |
80662eda MD |
1235 | |
1236 | ||
1237 | /* ======================================== */ | |
1238 | ||
398d8ee1 KN |
1239 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1240 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1241 | "Return the value from @var{obj}'s slot with the name\n" |
1242 | "@var{slot_name}.") | |
398d8ee1 | 1243 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1244 | { |
1245 | SCM res, class; | |
1246 | ||
398d8ee1 | 1247 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1248 | TEST_CHANGE_CLASS (obj, class); |
1249 | ||
1250 | res = get_slot_value_using_name (class, obj, slot_name); | |
1251 | if (SCM_GOOPS_UNBOUNDP (res)) | |
1252 | return CALL_GF3 ("slot-unbound", class, obj, slot_name); | |
1253 | return res; | |
1254 | } | |
398d8ee1 | 1255 | #undef FUNC_NAME |
80662eda | 1256 | |
398d8ee1 KN |
1257 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1258 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1259 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1260 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1261 | { |
1262 | SCM class; | |
1263 | ||
398d8ee1 | 1264 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1265 | TEST_CHANGE_CLASS(obj, class); |
1266 | ||
1267 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1268 | } | |
398d8ee1 | 1269 | #undef FUNC_NAME |
80662eda | 1270 | |
398d8ee1 | 1271 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1272 | |
398d8ee1 KN |
1273 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1274 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1275 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1276 | "is bound.") | |
398d8ee1 | 1277 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1278 | { |
1279 | SCM class; | |
1280 | ||
398d8ee1 | 1281 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1282 | TEST_CHANGE_CLASS(obj, class); |
1283 | ||
1284 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1285 | obj, | |
1286 | slot_name)) | |
1287 | ? SCM_BOOL_F | |
1288 | : SCM_BOOL_T); | |
1289 | } | |
398d8ee1 | 1290 | #undef FUNC_NAME |
80662eda | 1291 | |
6d77c894 | 1292 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1293 | (SCM obj, SCM slot_name), |
6bcefd15 | 1294 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1295 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1296 | { |
1297 | SCM class; | |
1298 | ||
398d8ee1 KN |
1299 | SCM_VALIDATE_INSTANCE (1, obj); |
1300 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1301 | TEST_CHANGE_CLASS (obj, class); |
1302 | ||
1303 | return test_slot_existence (class, obj, slot_name); | |
1304 | } | |
398d8ee1 | 1305 | #undef FUNC_NAME |
80662eda MD |
1306 | |
1307 | ||
1308 | /****************************************************************************** | |
1309 | * | |
1310 | * %allocate-instance (the low level instance allocation primitive) | |
1311 | * | |
1312 | ******************************************************************************/ | |
1313 | ||
1314 | static void clear_method_cache (SCM); | |
1315 | ||
1316 | static SCM | |
c014a02e | 1317 | wrap_init (SCM class, SCM *m, long n) |
80662eda | 1318 | { |
c014a02e | 1319 | long i; |
6d77c894 | 1320 | |
80662eda MD |
1321 | /* Set all slots to unbound */ |
1322 | for (i = 0; i < n; i++) | |
1323 | m[i] = SCM_GOOPS_UNBOUND; | |
1324 | ||
228a24ef DH |
1325 | return scm_double_cell ((((scm_t_bits) SCM_STRUCT_DATA (class)) |
1326 | | scm_tc3_struct), | |
1327 | (scm_t_bits) m, 0, 0); | |
80662eda MD |
1328 | } |
1329 | ||
398d8ee1 KN |
1330 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1331 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1332 | "Create a new instance of class @var{class} and initialize it\n" |
1333 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1334 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda MD |
1335 | { |
1336 | SCM *m; | |
c014a02e | 1337 | long n; |
80662eda | 1338 | |
398d8ee1 | 1339 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1340 | |
1341 | /* Most instances */ | |
1342 | if (SCM_CLASS_FLAGS (class) & SCM_STRUCTF_LIGHT) | |
1343 | { | |
1344 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
4c9419ac | 1345 | m = (SCM *) scm_gc_malloc (n * sizeof (SCM), "struct"); |
80662eda MD |
1346 | return wrap_init (class, m, n); |
1347 | } | |
6d77c894 | 1348 | |
80662eda MD |
1349 | /* Foreign objects */ |
1350 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_FOREIGN) | |
1351 | return scm_make_foreign_object (class, initargs); | |
1352 | ||
1353 | n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); | |
6d77c894 | 1354 | |
80662eda MD |
1355 | /* Entities */ |
1356 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_ENTITY) | |
1357 | { | |
4c9419ac MV |
1358 | m = (SCM *) scm_alloc_struct (n, scm_struct_entity_n_extra_words, |
1359 | "entity struct"); | |
80662eda MD |
1360 | m[scm_struct_i_setter] = SCM_BOOL_F; |
1361 | m[scm_struct_i_procedure] = SCM_BOOL_F; | |
1362 | /* Generic functions */ | |
1363 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) | |
1364 | { | |
1365 | SCM gf = wrap_init (class, m, n); | |
1366 | clear_method_cache (gf); | |
1367 | return gf; | |
1368 | } | |
1369 | else | |
1370 | return wrap_init (class, m, n); | |
1371 | } | |
6d77c894 | 1372 | |
80662eda MD |
1373 | /* Class objects */ |
1374 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_METACLASS) | |
1375 | { | |
c014a02e | 1376 | long i; |
80662eda MD |
1377 | |
1378 | /* allocate class object */ | |
1379 | SCM z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
1380 | ||
dcb410ec | 1381 | SCM_SET_SLOT (z, scm_si_print, SCM_GOOPS_UNBOUND); |
80662eda | 1382 | for (i = scm_si_goops_fields; i < n; i++) |
dcb410ec | 1383 | SCM_SET_SLOT (z, i, SCM_GOOPS_UNBOUND); |
80662eda MD |
1384 | |
1385 | if (SCM_SUBCLASSP (class, scm_class_entity_class)) | |
1386 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY); | |
1387 | else if (SCM_SUBCLASSP (class, scm_class_operator_class)) | |
1388 | SCM_SET_CLASS_FLAGS (z, SCM_CLASSF_OPERATOR); | |
1389 | ||
1390 | return z; | |
1391 | } | |
6d77c894 | 1392 | |
80662eda MD |
1393 | /* Non-light instances */ |
1394 | { | |
4c9419ac | 1395 | m = (SCM *) scm_alloc_struct (n, scm_struct_n_extra_words, "heavy struct"); |
80662eda MD |
1396 | return wrap_init (class, m, n); |
1397 | } | |
1398 | } | |
398d8ee1 | 1399 | #undef FUNC_NAME |
80662eda | 1400 | |
398d8ee1 KN |
1401 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1402 | (SCM obj, SCM setter), | |
1403 | "") | |
1404 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1405 | { |
c312aca7 | 1406 | SCM_ASSERT (SCM_STRUCTP (obj) |
80662eda MD |
1407 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
1408 | || SCM_I_ENTITYP (obj)), | |
1409 | obj, | |
1410 | SCM_ARG1, | |
398d8ee1 | 1411 | FUNC_NAME); |
80662eda | 1412 | if (SCM_I_ENTITYP (obj)) |
322ec19d | 1413 | SCM_SET_ENTITY_SETTER (obj, setter); |
80662eda MD |
1414 | else |
1415 | SCM_OPERATOR_CLASS (obj)->setter = setter; | |
1416 | return SCM_UNSPECIFIED; | |
1417 | } | |
398d8ee1 | 1418 | #undef FUNC_NAME |
80662eda MD |
1419 | |
1420 | /****************************************************************************** | |
1421 | * | |
1422 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1423 | * |
80662eda MD |
1424 | ******************************************************************************/ |
1425 | ||
398d8ee1 KN |
1426 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1427 | (SCM old, SCM new), | |
1428 | "") | |
1429 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1430 | { |
398d8ee1 KN |
1431 | SCM_VALIDATE_INSTANCE (1, old); |
1432 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1433 | |
6d77c894 | 1434 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1435 | * scratch the old value with new to be correct with GC. |
1436 | * See "Class redefinition protocol above". | |
1437 | */ | |
1438 | SCM_REDEFER_INTS; | |
1439 | { | |
1440 | SCM car = SCM_CAR (old); | |
1441 | SCM cdr = SCM_CDR (old); | |
1442 | SCM_SETCAR (old, SCM_CAR (new)); | |
1443 | SCM_SETCDR (old, SCM_CDR (new)); | |
1444 | SCM_SETCAR (new, car); | |
1445 | SCM_SETCDR (new, cdr); | |
1446 | } | |
1447 | SCM_REALLOW_INTS; | |
1448 | return SCM_UNSPECIFIED; | |
1449 | } | |
398d8ee1 | 1450 | #undef FUNC_NAME |
80662eda | 1451 | |
398d8ee1 KN |
1452 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1453 | (SCM old, SCM new), | |
1454 | "") | |
1455 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1456 | { |
398d8ee1 KN |
1457 | SCM_VALIDATE_CLASS (1, old); |
1458 | SCM_VALIDATE_CLASS (2, new); | |
80662eda MD |
1459 | |
1460 | SCM_REDEFER_INTS; | |
1461 | { | |
1462 | SCM car = SCM_CAR (old); | |
1463 | SCM cdr = SCM_CDR (old); | |
1464 | SCM_SETCAR (old, SCM_CAR (new)); | |
1465 | SCM_SETCDR (old, SCM_CDR (new)); | |
729dbac3 | 1466 | SCM_STRUCT_DATA (old)[scm_vtable_index_vtable] = SCM_UNPACK (old); |
80662eda MD |
1467 | SCM_SETCAR (new, car); |
1468 | SCM_SETCDR (new, cdr); | |
729dbac3 | 1469 | SCM_STRUCT_DATA (new)[scm_vtable_index_vtable] = SCM_UNPACK (new); |
80662eda MD |
1470 | } |
1471 | SCM_REALLOW_INTS; | |
1472 | return SCM_UNSPECIFIED; | |
1473 | } | |
398d8ee1 | 1474 | #undef FUNC_NAME |
80662eda | 1475 | |
398d8ee1 KN |
1476 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1477 | (SCM class), | |
1478 | "") | |
1479 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1480 | { |
398d8ee1 | 1481 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1482 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1483 | return SCM_UNSPECIFIED; | |
1484 | } | |
398d8ee1 | 1485 | #undef FUNC_NAME |
80662eda MD |
1486 | |
1487 | /* When instances change class, they finally get a new body, but | |
1488 | * before that, they go through purgatory in hell. Odd as it may | |
1489 | * seem, this data structure saves us from eternal suffering in | |
1490 | * infinite recursions. | |
1491 | */ | |
1492 | ||
92c2555f | 1493 | static scm_t_bits **hell; |
c014a02e ML |
1494 | static long n_hell = 1; /* one place for the evil one himself */ |
1495 | static long hell_size = 4; | |
2132f0d2 | 1496 | static SCM hell_mutex; |
80662eda | 1497 | |
c014a02e | 1498 | static long |
80662eda MD |
1499 | burnin (SCM o) |
1500 | { | |
c014a02e | 1501 | long i; |
80662eda | 1502 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1503 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1504 | return i; |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | static void | |
1509 | go_to_hell (void *o) | |
1510 | { | |
6b80d352 | 1511 | SCM obj = SCM_PACK ((scm_t_bits) o); |
2132f0d2 | 1512 | scm_lock_mutex (hell_mutex); |
80662eda MD |
1513 | if (n_hell == hell_size) |
1514 | { | |
c014a02e | 1515 | long new_size = 2 * hell_size; |
4c9419ac | 1516 | hell = scm_realloc (hell, new_size); |
80662eda MD |
1517 | hell_size = new_size; |
1518 | } | |
6b80d352 | 1519 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1520 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1521 | } |
1522 | ||
1523 | static void | |
1524 | go_to_heaven (void *o) | |
1525 | { | |
2132f0d2 | 1526 | scm_lock_mutex (hell_mutex); |
6b80d352 | 1527 | hell[burnin (SCM_PACK ((scm_t_bits) o))] = hell[--n_hell]; |
2132f0d2 | 1528 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1529 | } |
1530 | ||
6b80d352 DH |
1531 | |
1532 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1533 | ||
80662eda MD |
1534 | static SCM |
1535 | purgatory (void *args) | |
1536 | { | |
6d77c894 | 1537 | return scm_apply_0 (GETVAR (scm_sym_change_class), |
6b80d352 | 1538 | SCM_PACK ((scm_t_bits) args)); |
80662eda MD |
1539 | } |
1540 | ||
38d8927c MD |
1541 | /* This function calls the generic function change-class for all |
1542 | * instances which aren't currently undergoing class change. | |
1543 | */ | |
1544 | ||
80662eda | 1545 | void |
e81d98ec | 1546 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1547 | { |
1548 | if (!burnin (obj)) | |
1549 | scm_internal_dynamic_wind (go_to_hell, purgatory, go_to_heaven, | |
6b80d352 DH |
1550 | (void *) SCM_UNPACK (scm_list_2 (obj, new_class)), |
1551 | (void *) SCM_UNPACK (obj)); | |
80662eda MD |
1552 | } |
1553 | ||
1554 | /****************************************************************************** | |
1555 | * | |
6d77c894 TTN |
1556 | * GGGG FFFFF |
1557 | * G F | |
1558 | * G GG FFF | |
1559 | * G G F | |
80662eda MD |
1560 | * GGG E N E R I C F U N C T I O N S |
1561 | * | |
1562 | * This implementation provides | |
1563 | * - generic functions (with class specializers) | |
1564 | * - multi-methods | |
6d77c894 | 1565 | * - next-method |
80662eda MD |
1566 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1567 | * | |
1568 | ******************************************************************************/ | |
1569 | ||
1570 | SCM_KEYWORD (k_name, "name"); | |
1571 | ||
1572 | SCM_SYMBOL (sym_no_method, "no-method"); | |
1573 | ||
1574 | static SCM list_of_no_method; | |
1575 | ||
1576 | SCM_SYMBOL (scm_sym_args, "args"); | |
1577 | ||
1578 | SCM | |
1579 | scm_make_method_cache (SCM gf) | |
1580 | { | |
1afff620 KN |
1581 | return scm_list_5 (SCM_IM_DISPATCH, |
1582 | scm_sym_args, | |
1583 | SCM_MAKINUM (1), | |
1584 | scm_c_make_vector (SCM_INITIAL_MCACHE_SIZE, | |
1585 | list_of_no_method), | |
1586 | gf); | |
80662eda MD |
1587 | } |
1588 | ||
1589 | static void | |
1590 | clear_method_cache (SCM gf) | |
1591 | { | |
322ec19d ML |
1592 | SCM cache = scm_make_method_cache (gf); |
1593 | SCM_SET_ENTITY_PROCEDURE (gf, cache); | |
dcb410ec | 1594 | SCM_SET_SLOT (gf, scm_si_used_by, SCM_BOOL_F); |
80662eda MD |
1595 | } |
1596 | ||
398d8ee1 KN |
1597 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1598 | (SCM gf), | |
1599 | "") | |
1600 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda MD |
1601 | { |
1602 | SCM used_by; | |
25ba37df | 1603 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
80662eda | 1604 | used_by = SCM_SLOT (gf, scm_si_used_by); |
6b80d352 | 1605 | if (!SCM_FALSEP (used_by)) |
80662eda MD |
1606 | { |
1607 | SCM methods = SCM_SLOT (gf, scm_si_methods); | |
c312aca7 | 1608 | for (; SCM_CONSP (used_by); used_by = SCM_CDR (used_by)) |
80662eda MD |
1609 | scm_sys_invalidate_method_cache_x (SCM_CAR (used_by)); |
1610 | clear_method_cache (gf); | |
c312aca7 | 1611 | for (; SCM_CONSP (methods); methods = SCM_CDR (methods)) |
dcb410ec | 1612 | SCM_SET_SLOT (SCM_CAR (methods), scm_si_code_table, SCM_EOL); |
80662eda MD |
1613 | } |
1614 | { | |
55c4a132 | 1615 | SCM n = SCM_SLOT (gf, scm_si_n_specialized); |
80662eda | 1616 | /* The sign of n is a flag indicating rest args. */ |
55c4a132 | 1617 | SCM_SET_MCACHE_N_SPECIALIZED (SCM_ENTITY_PROCEDURE (gf), n); |
80662eda MD |
1618 | } |
1619 | return SCM_UNSPECIFIED; | |
1620 | } | |
398d8ee1 | 1621 | #undef FUNC_NAME |
80662eda | 1622 | |
398d8ee1 KN |
1623 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1624 | (SCM proc), | |
1625 | "") | |
1626 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1627 | { |
6b80d352 | 1628 | SCM_ASSERT (!SCM_FALSEP (scm_procedure_p (proc)), |
398d8ee1 | 1629 | proc, SCM_ARG1, FUNC_NAME); |
80662eda MD |
1630 | return (scm_subr_p (proc) && SCM_SUBR_GENERIC (proc) |
1631 | ? SCM_BOOL_T | |
1632 | : SCM_BOOL_F); | |
1633 | } | |
398d8ee1 | 1634 | #undef FUNC_NAME |
80662eda | 1635 | |
398d8ee1 KN |
1636 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1637 | (SCM subrs), | |
1638 | "") | |
1639 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1640 | { |
6b80d352 DH |
1641 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
1642 | while (!SCM_NULLP (subrs)) | |
80662eda MD |
1643 | { |
1644 | SCM subr = SCM_CAR (subrs); | |
1645 | SCM_ASSERT (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr), | |
398d8ee1 | 1646 | subr, SCM_ARGn, FUNC_NAME); |
80662eda | 1647 | *SCM_SUBR_GENERIC (subr) |
1afff620 KN |
1648 | = scm_make (scm_list_3 (scm_class_generic, |
1649 | k_name, | |
1650 | SCM_SNAME (subr))); | |
80662eda MD |
1651 | subrs = SCM_CDR (subrs); |
1652 | } | |
1653 | return SCM_UNSPECIFIED; | |
1654 | } | |
398d8ee1 | 1655 | #undef FUNC_NAME |
80662eda | 1656 | |
398d8ee1 KN |
1657 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1658 | (SCM subr), | |
1659 | "") | |
1660 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda MD |
1661 | { |
1662 | if (scm_subr_p (subr) && SCM_SUBR_GENERIC (subr)) | |
1663 | { | |
a48d60b1 MD |
1664 | if (!*SCM_SUBR_GENERIC (subr)) |
1665 | scm_enable_primitive_generic_x (scm_list_1 (subr)); | |
1666 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1667 | } |
db4b4ca6 | 1668 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1669 | } |
398d8ee1 | 1670 | #undef FUNC_NAME |
80662eda | 1671 | |
a48d60b1 MD |
1672 | typedef struct t_extension { |
1673 | struct t_extension *next; | |
1674 | SCM extended; | |
1675 | SCM extension; | |
1676 | } t_extension; | |
1677 | ||
1678 | static t_extension *extensions = 0; | |
1679 | ||
1680 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
1681 | ||
1682 | void | |
1683 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1684 | { | |
1685 | if (goops_loaded_p) | |
1686 | { | |
1687 | SCM gf, gext; | |
1688 | if (!*SCM_SUBR_GENERIC (extended)) | |
1689 | scm_enable_primitive_generic_x (scm_list_1 (extended)); | |
1690 | gf = *SCM_SUBR_GENERIC (extended); | |
1691 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1692 | gf, | |
1693 | SCM_SNAME (extension)); | |
1694 | *SCM_SUBR_GENERIC (extension) = gext; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | t_extension *e = scm_malloc (sizeof (t_extension)); | |
1699 | t_extension **loc = &extensions; | |
1700 | /* Make sure that extensions are placed before their own | |
1701 | * extensions in the extensions list. O(N^2) algorithm, but | |
1702 | * extensions of primitive generics are rare. | |
1703 | */ | |
1704 | while (*loc && extension != (*loc)->extended) | |
1705 | loc = &(*loc)->next; | |
1706 | e->next = *loc; | |
1707 | e->extended = extended; | |
1708 | e->extension = extension; | |
1709 | *loc = e; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | static void | |
1714 | setup_extended_primitive_generics () | |
1715 | { | |
1716 | while (extensions) | |
1717 | { | |
1718 | t_extension *e = extensions; | |
1719 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1720 | extensions = e->next; | |
1721 | free (e); | |
1722 | } | |
1723 | } | |
1724 | ||
80662eda | 1725 | /****************************************************************************** |
6d77c894 | 1726 | * |
80662eda | 1727 | * Protocol for calling a generic fumction |
6d77c894 | 1728 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1729 | * for efficiency reasons): |
1730 | * | |
1731 | * + apply-generic (gf args) | |
1732 | * + compute-applicable-methods (gf args ...) | |
1733 | * + sort-applicable-methods (methods args) | |
1734 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1735 | * |
1736 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1737 | * method. Applying a next-method will call apply-next-method which in |
1738 | * turn will call apply again to call effectively the following method. | |
1739 | * | |
1740 | ******************************************************************************/ | |
1741 | ||
1742 | static int | |
1743 | applicablep (SCM actual, SCM formal) | |
1744 | { | |
79a3dafe DH |
1745 | /* We already know that the cpl is well formed. */ |
1746 | return !SCM_FALSEP (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); | |
80662eda MD |
1747 | } |
1748 | ||
1749 | static int | |
34d19ef6 | 1750 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1751 | { |
1752 | register SCM s1, s2; | |
c014a02e | 1753 | register long i; |
6d77c894 TTN |
1754 | /* |
1755 | * Note: | |
1756 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1757 | * other when we have a dotted parameter list). For instance, with the call |
1758 | * (M 1) | |
1759 | * with | |
1760 | * (define-method M (a . l) ....) | |
6d77c894 | 1761 | * (define-method M (a) ....) |
80662eda MD |
1762 | * |
1763 | * we consider that the second method is more specific. | |
1764 | * | |
1765 | * BTW, targs is an array of types. We don't need it's size since | |
1766 | * we already know that m1 and m2 are applicable (no risk to go past | |
1767 | * the end of this array). | |
1768 | * | |
1769 | */ | |
34d19ef6 | 1770 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
80662eda MD |
1771 | if (SCM_NULLP(s1)) return 1; |
1772 | if (SCM_NULLP(s2)) return 0; | |
1773 | if (SCM_CAR(s1) != SCM_CAR(s2)) { | |
1774 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); | |
6d77c894 | 1775 | |
dcb410ec | 1776 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
80662eda MD |
1777 | if (cs1 == SCM_CAR(l)) |
1778 | return 1; | |
1779 | if (cs2 == SCM_CAR(l)) | |
1780 | return 0; | |
1781 | } | |
1782 | return 0;/* should not occur! */ | |
1783 | } | |
1784 | } | |
1785 | return 0; /* should not occur! */ | |
1786 | } | |
1787 | ||
1788 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1789 | ||
1790 | static SCM | |
c014a02e | 1791 | scm_i_vector2list (SCM l, long len) |
80662eda | 1792 | { |
c014a02e | 1793 | long j; |
00ffa0e7 | 1794 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1795 | |
80662eda | 1796 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
34d19ef6 | 1797 | SCM_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1798 | } |
1799 | return z; | |
1800 | } | |
1801 | ||
1802 | static SCM | |
34d19ef6 | 1803 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1804 | { |
c014a02e | 1805 | long i, j, incr; |
80662eda MD |
1806 | SCM *v, vector = SCM_EOL; |
1807 | SCM buffer[BUFFSIZE]; | |
1808 | SCM save = method_list; | |
1809 | ||
1810 | /* For reasonably sized method_lists we can try to avoid all the | |
1811 | * consing and reorder the list in place... | |
1812 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1813 | */ | |
1814 | if (size <= BUFFSIZE) | |
1815 | { | |
1816 | for (i = 0; i < size; i++) | |
1817 | { | |
1818 | buffer[i] = SCM_CAR (method_list); | |
1819 | method_list = SCM_CDR (method_list); | |
1820 | } | |
1821 | v = buffer; | |
6d77c894 | 1822 | } |
80662eda MD |
1823 | else |
1824 | { | |
1825 | /* Too many elements in method_list to keep everything locally */ | |
1826 | vector = scm_i_vector2list (save, size); | |
34d19ef6 HWN |
1827 | |
1828 | /* | |
1829 | This is a new vector. Don't worry about the write barrier. | |
1830 | We're not allocating elements in this routine, so this should | |
1831 | pose no problem. | |
1832 | */ | |
bbf8d523 | 1833 | v = SCM_WRITABLE_VELTS (vector); |
80662eda MD |
1834 | } |
1835 | ||
6d77c894 | 1836 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
1837 | * small vectors (which is probably mostly the case when we have to |
1838 | * sort a list of applicable methods). | |
1839 | */ | |
1840 | for (incr = size / 2; incr; incr /= 2) | |
1841 | { | |
1842 | for (i = incr; i < size; i++) | |
1843 | { | |
1844 | for (j = i - incr; j >= 0; j -= incr) | |
1845 | { | |
1846 | if (more_specificp (v[j], v[j+incr], targs)) | |
1847 | break; | |
1848 | else | |
1849 | { | |
1850 | SCM tmp = v[j + incr]; | |
1851 | v[j + incr] = v[j]; | |
1852 | v[j] = tmp; | |
1853 | } | |
1854 | } | |
1855 | } | |
1856 | } | |
1857 | ||
1858 | if (size <= BUFFSIZE) | |
1859 | { | |
1860 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
1861 | for (i = 0, method_list = save; i < size; i++, v++) | |
1862 | { | |
1863 | SCM_SETCAR (method_list, *v); | |
1864 | method_list = SCM_CDR (method_list); | |
1865 | } | |
1866 | return save; | |
1867 | } | |
6d77c894 | 1868 | /* If we are here, that's that we did it the hard way... */ |
80662eda MD |
1869 | return scm_vector_to_list (vector); |
1870 | } | |
1871 | ||
1872 | SCM | |
c014a02e | 1873 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 1874 | { |
c014a02e ML |
1875 | register long i; |
1876 | long count = 0; | |
80662eda MD |
1877 | SCM l, fl, applicable = SCM_EOL; |
1878 | SCM save = args; | |
34d19ef6 HWN |
1879 | SCM buffer[BUFFSIZE]; |
1880 | SCM const *types; | |
1881 | SCM *p; | |
1882 | SCM tmp = SCM_EOL; | |
6d77c894 | 1883 | |
80662eda MD |
1884 | /* Build the list of arguments types */ |
1885 | if (len >= BUFFSIZE) { | |
00ffa0e7 | 1886 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); |
80662eda MD |
1887 | /* NOTE: Using pointers to malloced memory won't work if we |
1888 | 1. have preemtive threading, and, | |
1889 | 2. have a GC which moves objects. */ | |
34d19ef6 HWN |
1890 | types = p = SCM_WRITABLE_VELTS(tmp); |
1891 | ||
1892 | /* | |
1893 | note that we don't have to work to reset the generation | |
1894 | count. TMP is a new vector anyway, and it is found | |
1895 | conservatively. | |
1896 | */ | |
80662eda MD |
1897 | } |
1898 | else | |
1899 | types = p = buffer; | |
6d77c894 TTN |
1900 | |
1901 | for ( ; !SCM_NULLP (args); args = SCM_CDR (args)) | |
80662eda | 1902 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 1903 | |
80662eda | 1904 | /* Build a list of all applicable methods */ |
bbf8d523 | 1905 | for (l = scm_generic_function_methods (gf); !SCM_NULLP (l); l = SCM_CDR (l)) |
80662eda MD |
1906 | { |
1907 | fl = SPEC_OF (SCM_CAR (l)); | |
1908 | /* Only accept accessors which match exactly in first arg. */ | |
1909 | if (SCM_ACCESSORP (SCM_CAR (l)) | |
6b80d352 | 1910 | && (SCM_NULLP (fl) || types[0] != SCM_CAR (fl))) |
80662eda MD |
1911 | continue; |
1912 | for (i = 0; ; i++, fl = SCM_CDR (fl)) | |
1913 | { | |
c312aca7 | 1914 | if (SCM_INSTANCEP (fl) |
80662eda MD |
1915 | /* We have a dotted argument list */ |
1916 | || (i >= len && SCM_NULLP (fl))) | |
1917 | { /* both list exhausted */ | |
1918 | applicable = scm_cons (SCM_CAR (l), applicable); | |
1919 | count += 1; | |
1920 | break; | |
1921 | } | |
1922 | if (i >= len | |
1923 | || SCM_NULLP (fl) | |
1924 | || !applicablep (types[i], SCM_CAR (fl))) | |
1925 | break; | |
1926 | } | |
1927 | } | |
1928 | ||
1929 | if (count == 0) | |
1930 | { | |
1931 | if (find_method_p) | |
1932 | return SCM_BOOL_F; | |
1933 | CALL_GF2 ("no-applicable-method", gf, save); | |
1934 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ | |
1935 | return SCM_BOOL_F; | |
1936 | } | |
34d19ef6 | 1937 | |
afc8e572 | 1938 | scm_remember_upto_here_1 (tmp); |
80662eda MD |
1939 | return (count == 1 |
1940 | ? applicable | |
1941 | : sort_applicable_methods (applicable, count, types)); | |
1942 | } | |
1943 | ||
1944 | #if 0 | |
1945 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
1946 | #endif | |
1947 | ||
1948 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
1949 | ||
1950 | SCM | |
1951 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 1952 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 1953 | { |
c014a02e | 1954 | long n; |
398d8ee1 | 1955 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 1956 | n = scm_ilength (args); |
398d8ee1 | 1957 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
1958 | return scm_compute_applicable_methods (gf, args, n, 1); |
1959 | } | |
398d8ee1 | 1960 | #undef FUNC_NAME |
80662eda | 1961 | |
86d31dfe | 1962 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
9a441ddb | 1963 | 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 |
1964 | |
1965 | SCM_SYNTAX (s_atslot_ref, "@slot-ref", scm_makmmacro, scm_m_atslot_ref); | |
1966 | ||
1967 | SCM | |
e81d98ec | 1968 | scm_m_atslot_ref (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 1969 | #define FUNC_NAME s_atslot_ref |
80662eda MD |
1970 | { |
1971 | SCM x = SCM_CDR (xorig); | |
160bb34a | 1972 | SCM_ASSYNT (scm_ilength (x) == 2, scm_s_expression, FUNC_NAME); |
e11208ca | 1973 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
1974 | return scm_cons (SCM_IM_SLOT_REF, x); |
1975 | } | |
e11208ca DH |
1976 | #undef FUNC_NAME |
1977 | ||
80662eda MD |
1978 | |
1979 | SCM_SYNTAX (s_atslot_set_x, "@slot-set!", scm_makmmacro, scm_m_atslot_set_x); | |
1980 | ||
1981 | SCM | |
e81d98ec | 1982 | scm_m_atslot_set_x (SCM xorig, SCM env SCM_UNUSED) |
e11208ca | 1983 | #define FUNC_NAME s_atslot_set_x |
80662eda MD |
1984 | { |
1985 | SCM x = SCM_CDR (xorig); | |
160bb34a | 1986 | SCM_ASSYNT (scm_ilength (x) == 3, scm_s_expression, FUNC_NAME); |
e11208ca | 1987 | SCM_VALIDATE_INUM (SCM_ARG2, SCM_CADR (x)); |
80662eda MD |
1988 | return scm_cons (SCM_IM_SLOT_SET_X, x); |
1989 | } | |
e11208ca DH |
1990 | #undef FUNC_NAME |
1991 | ||
80662eda MD |
1992 | |
1993 | SCM_SYNTAX (s_atdispatch, "@dispatch", scm_makmmacro, scm_m_atdispatch); | |
1994 | ||
1995 | SCM_SYMBOL (sym_atdispatch, s_atdispatch); | |
1996 | ||
1997 | SCM | |
1998 | scm_m_atdispatch (SCM xorig, SCM env) | |
ca83b028 | 1999 | #define FUNC_NAME s_atdispatch |
80662eda MD |
2000 | { |
2001 | SCM args, n, v, gf, x = SCM_CDR (xorig); | |
160bb34a | 2002 | SCM_ASSYNT (scm_ilength (x) == 4, scm_s_expression, FUNC_NAME); |
80662eda | 2003 | args = SCM_CAR (x); |
e11208ca DH |
2004 | if (!SCM_CONSP (args) && !SCM_SYMBOLP (args)) |
2005 | SCM_WRONG_TYPE_ARG (SCM_ARG1, args); | |
80662eda MD |
2006 | x = SCM_CDR (x); |
2007 | n = SCM_XEVALCAR (x, env); | |
e11208ca | 2008 | SCM_VALIDATE_INUM (SCM_ARG2, n); |
ca83b028 | 2009 | SCM_ASSERT_RANGE (0, n, SCM_INUM (n) >= 1); |
80662eda MD |
2010 | x = SCM_CDR (x); |
2011 | v = SCM_XEVALCAR (x, env); | |
e11208ca | 2012 | SCM_VALIDATE_VECTOR (SCM_ARG3, v); |
80662eda MD |
2013 | x = SCM_CDR (x); |
2014 | gf = SCM_XEVALCAR (x, env); | |
e11208ca | 2015 | SCM_VALIDATE_PUREGENERIC (SCM_ARG4, gf); |
1afff620 | 2016 | return scm_list_5 (SCM_IM_DISPATCH, args, n, v, gf); |
80662eda | 2017 | } |
ca83b028 DH |
2018 | #undef FUNC_NAME |
2019 | ||
80662eda | 2020 | |
80662eda MD |
2021 | static void |
2022 | lock_cache_mutex (void *m) | |
2023 | { | |
6b80d352 | 2024 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2025 | scm_lock_mutex (mutex); |
2026 | } | |
2027 | ||
2028 | static void | |
2029 | unlock_cache_mutex (void *m) | |
2030 | { | |
6b80d352 | 2031 | SCM mutex = SCM_PACK ((scm_t_bits) m); |
80662eda MD |
2032 | scm_unlock_mutex (mutex); |
2033 | } | |
80662eda MD |
2034 | |
2035 | static SCM | |
2036 | call_memoize_method (void *a) | |
2037 | { | |
6b80d352 | 2038 | SCM args = SCM_PACK ((scm_t_bits) a); |
80662eda MD |
2039 | SCM gf = SCM_CAR (args); |
2040 | SCM x = SCM_CADR (args); | |
2041 | /* First check if another thread has inserted a method between | |
2042 | * the cache miss and locking the mutex. | |
2043 | */ | |
2044 | SCM cmethod = scm_mcache_lookup_cmethod (x, SCM_CDDR (args)); | |
6b80d352 | 2045 | if (!SCM_FALSEP (cmethod)) |
80662eda MD |
2046 | return cmethod; |
2047 | /*fixme* Use scm_apply */ | |
2048 | return CALL_GF3 ("memoize-method!", gf, SCM_CDDR (args), x); | |
2049 | } | |
2050 | ||
2051 | SCM | |
2052 | scm_memoize_method (SCM x, SCM args) | |
2053 | { | |
2054 | SCM gf = SCM_CAR (scm_last_pair (x)); | |
6b80d352 DH |
2055 | return scm_internal_dynamic_wind ( |
2056 | lock_cache_mutex, | |
2057 | call_memoize_method, | |
2058 | unlock_cache_mutex, | |
2059 | (void *) SCM_UNPACK (scm_cons2 (gf, x, args)), | |
2060 | (void *) SCM_UNPACK (SCM_SLOT (gf, scm_si_cache_mutex))); | |
80662eda MD |
2061 | } |
2062 | ||
2063 | /****************************************************************************** | |
2064 | * | |
2065 | * A simple make (which will be redefined later in Scheme) | |
2066 | * This version handles only creation of gf, methods and classes (no instances) | |
2067 | * | |
6d77c894 | 2068 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2069 | * no precaution is taken to be efficient. |
2070 | * | |
2071 | ******************************************************************************/ | |
2072 | ||
2073 | SCM_KEYWORD (k_setter, "setter"); | |
2074 | SCM_KEYWORD (k_specializers, "specializers"); | |
2075 | SCM_KEYWORD (k_procedure, "procedure"); | |
2076 | SCM_KEYWORD (k_dsupers, "dsupers"); | |
2077 | SCM_KEYWORD (k_slots, "slots"); | |
2078 | SCM_KEYWORD (k_gf, "generic-function"); | |
2079 | ||
398d8ee1 KN |
2080 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2081 | (SCM args), | |
27c37006 | 2082 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2083 | "all necessary initialization information.") |
398d8ee1 | 2084 | #define FUNC_NAME s_scm_make |
80662eda MD |
2085 | { |
2086 | SCM class, z; | |
c014a02e | 2087 | long len = scm_ilength (args); |
80662eda MD |
2088 | |
2089 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2090 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2091 | |
2092 | class = SCM_CAR(args); | |
2093 | args = SCM_CDR(args); | |
2094 | ||
f8af5c6d | 2095 | if (class == scm_class_generic || class == scm_class_accessor) |
80662eda | 2096 | { |
80662eda | 2097 | z = scm_make_struct (class, SCM_INUM0, |
bbf8d523 | 2098 | scm_list_5 (SCM_EOL, |
1afff620 KN |
2099 | SCM_INUM0, |
2100 | SCM_BOOL_F, | |
bbf8d523 MD |
2101 | scm_make_mutex (), |
2102 | SCM_EOL)); | |
80662eda MD |
2103 | scm_set_procedure_property_x (z, scm_sym_name, |
2104 | scm_get_keyword (k_name, | |
2105 | args, | |
2106 | SCM_BOOL_F)); | |
2107 | clear_method_cache (z); | |
f8af5c6d | 2108 | if (class == scm_class_accessor) |
80662eda MD |
2109 | { |
2110 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
6b80d352 | 2111 | if (!SCM_FALSEP (setter)) |
80662eda MD |
2112 | scm_sys_set_object_setter_x (z, setter); |
2113 | } | |
2114 | } | |
2115 | else | |
2116 | { | |
2117 | z = scm_sys_allocate_instance (class, args); | |
2118 | ||
2119 | if (class == scm_class_method | |
2120 | || class == scm_class_simple_method | |
f8af5c6d | 2121 | || class == scm_class_accessor_method) |
80662eda | 2122 | { |
6d77c894 | 2123 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2124 | scm_i_get_keyword (k_gf, |
2125 | args, | |
2126 | len - 1, | |
2127 | SCM_BOOL_F, | |
dcb410ec | 2128 | FUNC_NAME)); |
6d77c894 | 2129 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2130 | scm_i_get_keyword (k_specializers, |
2131 | args, | |
2132 | len - 1, | |
2133 | SCM_EOL, | |
dcb410ec | 2134 | FUNC_NAME)); |
6d77c894 | 2135 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2136 | scm_i_get_keyword (k_procedure, |
2137 | args, | |
2138 | len - 1, | |
2139 | SCM_EOL, | |
dcb410ec DH |
2140 | FUNC_NAME)); |
2141 | SCM_SET_SLOT (z, scm_si_code_table, SCM_EOL); | |
80662eda MD |
2142 | } |
2143 | else | |
2144 | { | |
2145 | /* In all the others case, make a new class .... No instance here */ | |
6d77c894 | 2146 | SCM_SET_SLOT (z, scm_si_name, |
80662eda MD |
2147 | scm_i_get_keyword (k_name, |
2148 | args, | |
2149 | len - 1, | |
38ae064c | 2150 | scm_str2symbol ("???"), |
dcb410ec | 2151 | FUNC_NAME)); |
6d77c894 | 2152 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2153 | scm_i_get_keyword (k_dsupers, |
2154 | args, | |
2155 | len - 1, | |
2156 | SCM_EOL, | |
dcb410ec | 2157 | FUNC_NAME)); |
6d77c894 | 2158 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2159 | scm_i_get_keyword (k_slots, |
2160 | args, | |
2161 | len - 1, | |
2162 | SCM_EOL, | |
dcb410ec | 2163 | FUNC_NAME)); |
80662eda MD |
2164 | } |
2165 | } | |
2166 | return z; | |
2167 | } | |
398d8ee1 | 2168 | #undef FUNC_NAME |
80662eda | 2169 | |
398d8ee1 KN |
2170 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2171 | (SCM l), | |
2172 | "") | |
2173 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2174 | { |
2175 | SCM gf; | |
c014a02e | 2176 | long len = scm_ilength (l); |
80662eda MD |
2177 | |
2178 | if (len == 0) | |
398d8ee1 | 2179 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2180 | |
2181 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2182 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2183 | if (SCM_NULLP (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2184 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2185 | |
2186 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2187 | } | |
398d8ee1 | 2188 | #undef FUNC_NAME |
80662eda | 2189 | |
398d8ee1 KN |
2190 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2191 | (SCM m1, SCM m2, SCM targs), | |
2192 | "") | |
2193 | #define FUNC_NAME s_scm_sys_method_more_specific_p | |
80662eda MD |
2194 | { |
2195 | SCM l, v; | |
c014a02e | 2196 | long i, len; |
80662eda | 2197 | |
398d8ee1 KN |
2198 | SCM_VALIDATE_METHOD (1, m1); |
2199 | SCM_VALIDATE_METHOD (2, m2); | |
2200 | SCM_ASSERT ((len = scm_ilength (targs)) != -1, targs, SCM_ARG3, FUNC_NAME); | |
80662eda MD |
2201 | |
2202 | /* Verify that all the arguments of targs are classes and place them in a vector*/ | |
00ffa0e7 | 2203 | v = scm_c_make_vector (len, SCM_EOL); |
80662eda | 2204 | |
6b80d352 | 2205 | for (i = 0, l = targs; !SCM_NULLP (l); i++, l = SCM_CDR (l)) { |
398d8ee1 | 2206 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); |
34d19ef6 | 2207 | SCM_VECTOR_SET (v, i, SCM_CAR(l)); |
80662eda MD |
2208 | } |
2209 | return more_specificp (m1, m2, SCM_VELTS(v)) ? SCM_BOOL_T: SCM_BOOL_F; | |
2210 | } | |
398d8ee1 | 2211 | #undef FUNC_NAME |
6d77c894 TTN |
2212 | |
2213 | ||
80662eda MD |
2214 | |
2215 | /****************************************************************************** | |
2216 | * | |
6d77c894 | 2217 | * Initializations |
80662eda MD |
2218 | * |
2219 | ******************************************************************************/ | |
2220 | ||
74b6d6e4 MD |
2221 | static void |
2222 | fix_cpl (SCM c, SCM before, SCM after) | |
2223 | { | |
2224 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2225 | SCM ls = scm_c_memq (after, cpl); | |
2226 | SCM tail = scm_delq1_x (before, SCM_CDR (ls)); | |
2227 | if (SCM_FALSEP (ls)) | |
2228 | /* if this condition occurs, fix_cpl should not be applied this way */ | |
2229 | abort (); | |
2230 | SCM_SETCAR (ls, before); | |
2231 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2232 | { | |
2233 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2234 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2235 | SCM g_n_s = compute_getters_n_setters (slots); | |
2236 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2237 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2238 | } | |
2239 | } | |
2240 | ||
80662eda MD |
2241 | |
2242 | static void | |
2243 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2244 | { | |
38ae064c | 2245 | SCM tmp = scm_str2symbol (name); |
6d77c894 | 2246 | |
80662eda MD |
2247 | *var = scm_permanent_object (scm_basic_make_class (meta, |
2248 | tmp, | |
2249 | SCM_CONSP (super) | |
2250 | ? super | |
1afff620 | 2251 | : scm_list_1 (super), |
80662eda MD |
2252 | slots)); |
2253 | DEFVAR(tmp, *var); | |
2254 | } | |
2255 | ||
2256 | ||
2257 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2258 | ||
2259 | static void | |
2260 | create_standard_classes (void) | |
2261 | { | |
2262 | SCM slots; | |
6d77c894 TTN |
2263 | SCM method_slots = scm_list_4 (scm_str2symbol ("generic-function"), |
2264 | scm_str2symbol ("specializers"), | |
6b80d352 | 2265 | sym_procedure, |
1afff620 KN |
2266 | scm_str2symbol ("code-table")); |
2267 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("slot-definition"), | |
2268 | k_init_keyword, | |
2269 | k_slot_definition)); | |
1afff620 | 2270 | SCM mutex_slot = scm_list_1 (scm_str2symbol ("make-mutex")); |
bbf8d523 | 2271 | SCM gf_slots = scm_list_5 (scm_str2symbol ("methods"), |
1afff620 KN |
2272 | scm_list_3 (scm_str2symbol ("n-specialized"), |
2273 | k_init_value, | |
2274 | SCM_INUM0), | |
2275 | scm_list_3 (scm_str2symbol ("used-by"), | |
2276 | k_init_value, | |
2277 | SCM_BOOL_F), | |
2278 | scm_list_3 (scm_str2symbol ("cache-mutex"), | |
2279 | k_init_thunk, | |
2280 | scm_closure (scm_list_2 (SCM_EOL, | |
2281 | mutex_slot), | |
bbf8d523 MD |
2282 | SCM_EOL)), |
2283 | scm_list_3 (scm_str2symbol ("extended-by"), | |
2284 | k_init_value, | |
2285 | SCM_EOL)); | |
2286 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_str2symbol ("extends"), | |
2287 | k_init_value, | |
2288 | SCM_EOL)); | |
80662eda MD |
2289 | /* Foreign class slot classes */ |
2290 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2291 | scm_class_class, scm_class_top, SCM_EOL); | |
2292 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2293 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2294 | make_stdcls (&scm_class_opaque, "<opaque-slot>", | |
2295 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2296 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2297 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2298 | make_stdcls (&scm_class_self, "<self-slot>", | |
2299 | scm_class_class, | |
74b6d6e4 | 2300 | scm_class_read_only, |
80662eda MD |
2301 | SCM_EOL); |
2302 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", | |
2303 | scm_class_class, | |
1afff620 | 2304 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda MD |
2305 | SCM_EOL); |
2306 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", | |
2307 | scm_class_class, | |
1afff620 | 2308 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2309 | SCM_EOL); |
2310 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2311 | scm_class_class, scm_class_protected, SCM_EOL); | |
2312 | make_stdcls (&scm_class_int, "<int-slot>", | |
2313 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2314 | make_stdcls (&scm_class_float, "<float-slot>", | |
2315 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2316 | make_stdcls (&scm_class_double, "<double-slot>", | |
2317 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2318 | ||
2319 | /* Continue initialization of class <class> */ | |
6d77c894 | 2320 | |
80662eda | 2321 | slots = build_class_class_slots (); |
dcb410ec DH |
2322 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2323 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2324 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2325 | compute_getters_n_setters (slots)); | |
6d77c894 | 2326 | |
80662eda MD |
2327 | make_stdcls (&scm_class_foreign_class, "<foreign-class>", |
2328 | scm_class_class, scm_class_class, | |
1afff620 KN |
2329 | scm_list_2 (scm_list_3 (scm_str2symbol ("constructor"), |
2330 | k_class, | |
2331 | scm_class_opaque), | |
2332 | scm_list_3 (scm_str2symbol ("destructor"), | |
2333 | k_class, | |
2334 | scm_class_opaque))); | |
80662eda MD |
2335 | make_stdcls (&scm_class_foreign_object, "<foreign-object>", |
2336 | scm_class_foreign_class, scm_class_object, SCM_EOL); | |
2337 | SCM_SET_CLASS_FLAGS (scm_class_foreign_object, SCM_CLASSF_FOREIGN); | |
2338 | ||
2339 | /* scm_class_generic functions classes */ | |
2340 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2341 | scm_class_class, scm_class_class, SCM_EOL); | |
2342 | make_stdcls (&scm_class_entity_class, "<entity-class>", | |
2343 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2344 | make_stdcls (&scm_class_operator_class, "<operator-class>", | |
2345 | scm_class_class, scm_class_procedure_class, SCM_EOL); | |
2346 | make_stdcls (&scm_class_operator_with_setter_class, | |
2347 | "<operator-with-setter-class>", | |
2348 | scm_class_class, scm_class_operator_class, SCM_EOL); | |
2349 | make_stdcls (&scm_class_method, "<method>", | |
2350 | scm_class_class, scm_class_object, method_slots); | |
2351 | make_stdcls (&scm_class_simple_method, "<simple-method>", | |
2352 | scm_class_class, scm_class_method, SCM_EOL); | |
2353 | SCM_SET_CLASS_FLAGS (scm_class_simple_method, SCM_CLASSF_SIMPLE_METHOD); | |
f8af5c6d | 2354 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
80662eda | 2355 | scm_class_class, scm_class_simple_method, amethod_slots); |
f8af5c6d | 2356 | SCM_SET_CLASS_FLAGS (scm_class_accessor_method, SCM_CLASSF_ACCESSOR_METHOD); |
74b6d6e4 MD |
2357 | make_stdcls (&scm_class_applicable, "<applicable>", |
2358 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda | 2359 | make_stdcls (&scm_class_entity, "<entity>", |
74b6d6e4 MD |
2360 | scm_class_entity_class, |
2361 | scm_list_2 (scm_class_object, scm_class_applicable), | |
2362 | SCM_EOL); | |
80662eda MD |
2363 | make_stdcls (&scm_class_entity_with_setter, "<entity-with-setter>", |
2364 | scm_class_entity_class, scm_class_entity, SCM_EOL); | |
2365 | make_stdcls (&scm_class_generic, "<generic>", | |
2366 | scm_class_entity_class, scm_class_entity, gf_slots); | |
2367 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 | 2368 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
f8af5c6d | 2369 | scm_class_entity_class, scm_class_generic, egf_slots); |
bbf8d523 | 2370 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2371 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
2372 | scm_class_entity_class, | |
1afff620 | 2373 | scm_list_2 (scm_class_generic, scm_class_entity_with_setter), |
80662eda | 2374 | SCM_EOL); |
80662eda | 2375 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d MD |
2376 | make_stdcls (&scm_class_accessor, "<accessor>", |
2377 | scm_class_entity_class, scm_class_generic_with_setter, SCM_EOL); | |
2378 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); | |
bbf8d523 MD |
2379 | make_stdcls (&scm_class_extended_generic_with_setter, |
2380 | "<extended-generic-with-setter>", | |
2381 | scm_class_entity_class, | |
74b6d6e4 MD |
2382 | scm_list_2 (scm_class_generic_with_setter, |
2383 | scm_class_extended_generic), | |
bbf8d523 MD |
2384 | SCM_EOL); |
2385 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2386 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 MD |
2387 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
2388 | scm_class_entity_class, | |
2389 | scm_list_2 (scm_class_accessor, | |
2390 | scm_class_extended_generic_with_setter), | |
2391 | SCM_EOL); | |
2392 | fix_cpl (scm_class_extended_accessor, | |
2393 | scm_class_extended_generic, scm_class_generic); | |
2394 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); | |
80662eda MD |
2395 | |
2396 | /* Primitive types classes */ | |
2397 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2398 | scm_class_class, scm_class_top, SCM_EOL); | |
2399 | make_stdcls (&scm_class_char, "<char>", | |
2400 | scm_class_class, scm_class_top, SCM_EOL); | |
2401 | make_stdcls (&scm_class_list, "<list>", | |
2402 | scm_class_class, scm_class_top, SCM_EOL); | |
2403 | make_stdcls (&scm_class_pair, "<pair>", | |
2404 | scm_class_class, scm_class_list, SCM_EOL); | |
2405 | make_stdcls (&scm_class_null, "<null>", | |
2406 | scm_class_class, scm_class_list, SCM_EOL); | |
2407 | make_stdcls (&scm_class_string, "<string>", | |
2408 | scm_class_class, scm_class_top, SCM_EOL); | |
2409 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2410 | scm_class_class, scm_class_top, SCM_EOL); | |
2411 | make_stdcls (&scm_class_vector, "<vector>", | |
2412 | scm_class_class, scm_class_top, SCM_EOL); | |
2413 | make_stdcls (&scm_class_number, "<number>", | |
2414 | scm_class_class, scm_class_top, SCM_EOL); | |
2415 | make_stdcls (&scm_class_complex, "<complex>", | |
2416 | scm_class_class, scm_class_number, SCM_EOL); | |
2417 | make_stdcls (&scm_class_real, "<real>", | |
2418 | scm_class_class, scm_class_complex, SCM_EOL); | |
2419 | make_stdcls (&scm_class_integer, "<integer>", | |
2420 | scm_class_class, scm_class_real, SCM_EOL); | |
2421 | make_stdcls (&scm_class_keyword, "<keyword>", | |
2422 | scm_class_class, scm_class_top, SCM_EOL); | |
2423 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2424 | scm_class_class, scm_class_top, SCM_EOL); | |
2425 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2426 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2427 | make_stdcls (&scm_class_procedure_with_setter, "<procedure-with-setter>", |
2428 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2429 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", | |
2430 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2431 | make_stdcls (&scm_class_port, "<port>", | |
2432 | scm_class_class, scm_class_top, SCM_EOL); | |
2433 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2434 | scm_class_class, scm_class_port, SCM_EOL); | |
2435 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2436 | scm_class_class, scm_class_port, SCM_EOL); | |
2437 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2438 | scm_class_class, | |
1afff620 | 2439 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2440 | SCM_EOL); |
2441 | } | |
2442 | ||
2443 | /********************************************************************** | |
2444 | * | |
2445 | * Smob classes | |
2446 | * | |
2447 | **********************************************************************/ | |
2448 | ||
2449 | static SCM | |
74b6d6e4 | 2450 | make_class_from_template (char *template, char *type_name, SCM supers, int applicablep) |
80662eda MD |
2451 | { |
2452 | SCM class, name; | |
2453 | if (type_name) | |
2454 | { | |
2455 | char buffer[100]; | |
2456 | sprintf (buffer, template, type_name); | |
38ae064c | 2457 | name = scm_str2symbol (buffer); |
80662eda MD |
2458 | } |
2459 | else | |
2460 | name = SCM_GOOPS_UNBOUND; | |
2461 | ||
74b6d6e4 MD |
2462 | class = scm_permanent_object (scm_basic_make_class (applicablep |
2463 | ? scm_class_procedure_class | |
2464 | : scm_class_class, | |
80662eda MD |
2465 | name, |
2466 | supers, | |
2467 | SCM_EOL)); | |
2468 | ||
2469 | /* Only define name if doesn't already exist. */ | |
2470 | if (!SCM_GOOPS_UNBOUNDP (name) | |
fdc28395 | 2471 | && SCM_FALSEP (scm_call_2 (scm_goops_lookup_closure, name, SCM_BOOL_F))) |
0ba8a0a5 | 2472 | DEFVAR (name, class); |
80662eda MD |
2473 | return class; |
2474 | } | |
2475 | ||
2476 | SCM | |
74b6d6e4 | 2477 | scm_make_extended_class (char *type_name, int applicablep) |
80662eda MD |
2478 | { |
2479 | return make_class_from_template ("<%s>", | |
2480 | type_name, | |
74b6d6e4 MD |
2481 | scm_list_1 (applicablep |
2482 | ? scm_class_applicable | |
2483 | : scm_class_top), | |
2484 | applicablep); | |
2485 | } | |
2486 | ||
2487 | void | |
2488 | scm_i_inherit_applicable (SCM c) | |
2489 | { | |
2490 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2491 | { | |
2492 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2493 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2494 | /* patch scm_class_applicable into direct-supers */ | |
2495 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
2496 | if (SCM_FALSEP (top)) | |
2497 | dsupers = scm_append (scm_list_2 (dsupers, | |
2498 | scm_list_1 (scm_class_applicable))); | |
2499 | else | |
2500 | { | |
2501 | SCM_SETCAR (top, scm_class_applicable); | |
2502 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2503 | } | |
2504 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2505 | /* patch scm_class_applicable into cpl */ | |
2506 | top = scm_c_memq (scm_class_top, cpl); | |
2507 | if (SCM_FALSEP (top)) | |
2508 | abort (); | |
2509 | else | |
2510 | { | |
2511 | SCM_SETCAR (top, scm_class_applicable); | |
2512 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2513 | } | |
2514 | /* add class to direct-subclasses of scm_class_applicable */ | |
2515 | SCM_SET_SLOT (scm_class_applicable, | |
2516 | scm_si_direct_subclasses, | |
2517 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2518 | scm_si_direct_subclasses))); | |
2519 | } | |
80662eda MD |
2520 | } |
2521 | ||
2522 | static void | |
2523 | create_smob_classes (void) | |
2524 | { | |
c014a02e | 2525 | long i; |
80662eda | 2526 | |
67329a9e | 2527 | scm_smob_class = (SCM *) scm_malloc (255 * sizeof (SCM)); |
80662eda MD |
2528 | for (i = 0; i < 255; ++i) |
2529 | scm_smob_class[i] = 0; | |
2530 | ||
2531 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_big)] = scm_class_integer; | |
2532 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_real)] = scm_class_real; | |
2533 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_complex)] = scm_class_complex; | |
2534 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; | |
6d77c894 | 2535 | |
80662eda MD |
2536 | for (i = 0; i < scm_numsmob; ++i) |
2537 | if (!scm_smob_class[i]) | |
74b6d6e4 MD |
2538 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2539 | scm_smobs[i].apply != 0); | |
80662eda MD |
2540 | } |
2541 | ||
2542 | void | |
c014a02e | 2543 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2544 | { |
2545 | SCM c, class = make_class_from_template ("<%s-port>", | |
2546 | type_name, | |
74b6d6e4 MD |
2547 | scm_list_1 (scm_class_port), |
2548 | 0); | |
80662eda MD |
2549 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2550 | = make_class_from_template ("<%s-input-port>", | |
2551 | type_name, | |
74b6d6e4 MD |
2552 | scm_list_2 (class, scm_class_input_port), |
2553 | 0); | |
80662eda MD |
2554 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2555 | = make_class_from_template ("<%s-output-port>", | |
2556 | type_name, | |
74b6d6e4 MD |
2557 | scm_list_2 (class, scm_class_output_port), |
2558 | 0); | |
80662eda MD |
2559 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2560 | = c | |
2561 | = make_class_from_template ("<%s-input-output-port>", | |
2562 | type_name, | |
74b6d6e4 MD |
2563 | scm_list_2 (class, scm_class_input_output_port), |
2564 | 0); | |
80662eda | 2565 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2566 | SCM_SET_SLOT (c, scm_si_cpl, |
2567 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2568 | } |
2569 | ||
2570 | static void | |
2571 | create_port_classes (void) | |
2572 | { | |
c014a02e | 2573 | long i; |
80662eda | 2574 | |
67329a9e | 2575 | scm_port_class = (SCM *) scm_malloc (3 * 256 * sizeof (SCM)); |
80662eda MD |
2576 | for (i = 0; i < 3 * 256; ++i) |
2577 | scm_port_class[i] = 0; | |
2578 | ||
2579 | for (i = 0; i < scm_numptob; ++i) | |
2580 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2581 | } | |
2582 | ||
2583 | static SCM | |
74b6d6e4 MD |
2584 | make_struct_class (void *closure SCM_UNUSED, |
2585 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2586 | { |
6b80d352 | 2587 | if (!SCM_FALSEP (SCM_STRUCT_TABLE_NAME (data))) |
80662eda MD |
2588 | SCM_SET_STRUCT_TABLE_CLASS (data, |
2589 | scm_make_extended_class | |
74b6d6e4 MD |
2590 | (SCM_SYMBOL_CHARS (SCM_STRUCT_TABLE_NAME (data)), |
2591 | SCM_CLASS_FLAGS (vtable) & SCM_CLASSF_OPERATOR)); | |
80662eda MD |
2592 | return SCM_UNSPECIFIED; |
2593 | } | |
2594 | ||
2595 | static void | |
2596 | create_struct_classes (void) | |
2597 | { | |
2598 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, scm_struct_table); | |
2599 | } | |
2600 | ||
2601 | /********************************************************************** | |
2602 | * | |
2603 | * C interface | |
2604 | * | |
2605 | **********************************************************************/ | |
2606 | ||
2607 | void | |
2608 | scm_load_goops () | |
2609 | { | |
2610 | if (!goops_loaded_p) | |
abd28220 | 2611 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2612 | } |
2613 | ||
e11208ca | 2614 | |
80662eda MD |
2615 | SCM |
2616 | scm_make_foreign_object (SCM class, SCM initargs) | |
e11208ca | 2617 | #define FUNC_NAME s_scm_make |
80662eda MD |
2618 | { |
2619 | void * (*constructor) (SCM) | |
2620 | = (void * (*) (SCM)) SCM_SLOT (class, scm_si_constructor); | |
e11208ca | 2621 | if (constructor == 0) |
1afff620 | 2622 | SCM_MISC_ERROR ("Can't make instances of class ~S", scm_list_1 (class)); |
80662eda MD |
2623 | return scm_wrap_object (class, constructor (initargs)); |
2624 | } | |
e11208ca DH |
2625 | #undef FUNC_NAME |
2626 | ||
80662eda MD |
2627 | |
2628 | static size_t | |
2629 | scm_free_foreign_object (SCM *class, SCM *data) | |
2630 | { | |
2631 | size_t (*destructor) (void *) | |
2632 | = (size_t (*) (void *)) class[scm_si_destructor]; | |
2633 | return destructor (data); | |
2634 | } | |
2635 | ||
2636 | SCM | |
2637 | scm_make_class (SCM meta, char *s_name, SCM supers, size_t size, | |
2638 | void * (*constructor) (SCM initargs), | |
2639 | size_t (*destructor) (void *)) | |
2640 | { | |
2641 | SCM name, class; | |
38ae064c | 2642 | name = scm_str2symbol (s_name); |
6b80d352 | 2643 | if (SCM_NULLP (supers)) |
1afff620 | 2644 | supers = scm_list_1 (scm_class_foreign_object); |
80662eda MD |
2645 | class = scm_basic_basic_make_class (meta, name, supers, SCM_EOL); |
2646 | scm_sys_inherit_magic_x (class, supers); | |
2647 | ||
2648 | if (destructor != 0) | |
2649 | { | |
dcb410ec | 2650 | SCM_SET_SLOT (class, scm_si_destructor, (SCM) destructor); |
80662eda MD |
2651 | SCM_SET_CLASS_DESTRUCTOR (class, scm_free_foreign_object); |
2652 | } | |
2653 | else if (size > 0) | |
2654 | { | |
2655 | SCM_SET_CLASS_DESTRUCTOR (class, scm_struct_free_light); | |
2656 | SCM_SET_CLASS_INSTANCE_SIZE (class, size); | |
2657 | } | |
6d77c894 | 2658 | |
dcb410ec DH |
2659 | SCM_SET_SLOT (class, scm_si_layout, scm_str2symbol ("")); |
2660 | SCM_SET_SLOT (class, scm_si_constructor, (SCM) constructor); | |
80662eda MD |
2661 | |
2662 | return class; | |
2663 | } | |
2664 | ||
2665 | SCM_SYMBOL (sym_o, "o"); | |
2666 | SCM_SYMBOL (sym_x, "x"); | |
2667 | ||
2668 | SCM_KEYWORD (k_accessor, "accessor"); | |
2669 | SCM_KEYWORD (k_getter, "getter"); | |
2670 | ||
2671 | static SCM | |
e81d98ec | 2672 | default_setter (SCM obj SCM_UNUSED, SCM c SCM_UNUSED) |
80662eda MD |
2673 | { |
2674 | scm_misc_error ("slot-set!", "read-only slot", SCM_EOL); | |
2675 | return 0; | |
2676 | } | |
2677 | ||
2678 | void | |
2679 | scm_add_slot (SCM class, char *slot_name, SCM slot_class, | |
2680 | SCM (*getter) (SCM obj), | |
2681 | SCM (*setter) (SCM obj, SCM x), | |
2682 | char *accessor_name) | |
2683 | { | |
2684 | { | |
9a441ddb MV |
2685 | SCM get = scm_c_make_subr ("goops:get", scm_tc7_subr_1, getter); |
2686 | SCM set = scm_c_make_subr ("goops:set", scm_tc7_subr_2, | |
2687 | setter ? setter : default_setter); | |
1afff620 KN |
2688 | SCM getm = scm_closure (scm_list_2 (scm_list_1 (sym_o), |
2689 | scm_list_2 (get, sym_o)), | |
80662eda | 2690 | SCM_EOL); |
1afff620 KN |
2691 | SCM setm = scm_closure (scm_list_2 (scm_list_2 (sym_o, sym_x), |
2692 | scm_list_3 (set, sym_o, sym_x)), | |
80662eda MD |
2693 | SCM_EOL); |
2694 | { | |
38ae064c DH |
2695 | SCM name = scm_str2symbol (slot_name); |
2696 | SCM aname = scm_str2symbol (accessor_name); | |
80662eda | 2697 | SCM gf = scm_ensure_accessor (aname); |
1afff620 KN |
2698 | SCM slot = scm_list_5 (name, |
2699 | k_class, | |
2700 | slot_class, | |
2701 | setter ? k_accessor : k_getter, | |
2702 | gf); | |
2703 | SCM gns = scm_list_4 (name, SCM_BOOL_F, get, set); | |
2704 | ||
f8af5c6d | 2705 | scm_add_method (gf, scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2706 | k_specializers, |
2707 | scm_list_1 (class), | |
2708 | k_procedure, | |
2709 | getm))); | |
80662eda | 2710 | scm_add_method (scm_setter (gf), |
f8af5c6d | 2711 | scm_make (scm_list_5 (scm_class_accessor_method, |
1afff620 KN |
2712 | k_specializers, |
2713 | scm_list_2 (class, scm_class_top), | |
2714 | k_procedure, | |
2715 | setm))); | |
80662eda | 2716 | DEFVAR (aname, gf); |
6d77c894 | 2717 | |
dcb410ec | 2718 | SCM_SET_SLOT (class, scm_si_slots, |
1afff620 KN |
2719 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_slots), |
2720 | scm_list_1 (slot)))); | |
dcb410ec | 2721 | SCM_SET_SLOT (class, scm_si_getters_n_setters, |
1afff620 KN |
2722 | scm_append_x (scm_list_2 (SCM_SLOT (class, scm_si_getters_n_setters), |
2723 | scm_list_1 (gns)))); | |
80662eda MD |
2724 | } |
2725 | } | |
6d77c894 | 2726 | { |
c014a02e | 2727 | long n = SCM_INUM (SCM_SLOT (class, scm_si_nfields)); |
80662eda | 2728 | |
dcb410ec | 2729 | SCM_SET_SLOT (class, scm_si_nfields, SCM_MAKINUM (n + 1)); |
80662eda MD |
2730 | } |
2731 | } | |
2732 | ||
2733 | SCM | |
2734 | scm_wrap_object (SCM class, void *data) | |
2735 | { | |
228a24ef DH |
2736 | return scm_double_cell (SCM_UNPACK (SCM_CDR (class)) | scm_tc3_struct, |
2737 | (scm_t_bits) data, | |
2738 | 0, 0); | |
80662eda MD |
2739 | } |
2740 | ||
2741 | SCM scm_components; | |
2742 | ||
2743 | SCM | |
2744 | scm_wrap_component (SCM class, SCM container, void *data) | |
2745 | { | |
2746 | SCM obj = scm_wrap_object (class, data); | |
2747 | SCM handle = scm_hash_fn_create_handle_x (scm_components, | |
2748 | obj, | |
2749 | SCM_BOOL_F, | |
2750 | scm_struct_ihashq, | |
2751 | scm_sloppy_assq, | |
2752 | 0); | |
2753 | SCM_SETCDR (handle, container); | |
2754 | return obj; | |
2755 | } | |
2756 | ||
2757 | SCM | |
2758 | scm_ensure_accessor (SCM name) | |
2759 | { | |
fdc28395 | 2760 | SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); |
f8af5c6d | 2761 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2762 | { |
1afff620 | 2763 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2764 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2765 | k_name, name, k_setter, gf)); |
80662eda MD |
2766 | } |
2767 | return gf; | |
2768 | } | |
2769 | ||
2770 | SCM_SYMBOL (sym_internal_add_method_x, "internal-add-method!"); | |
2771 | ||
2772 | void | |
2773 | scm_add_method (SCM gf, SCM m) | |
2774 | { | |
1afff620 | 2775 | scm_eval (scm_list_3 (sym_internal_add_method_x, gf, m), scm_module_goops); |
80662eda MD |
2776 | } |
2777 | ||
2778 | #ifdef GUILE_DEBUG | |
2779 | /* | |
2780 | * Debugging utilities | |
2781 | */ | |
2782 | ||
398d8ee1 KN |
2783 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2784 | (SCM obj), | |
6bcefd15 | 2785 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2786 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2787 | { |
25ba37df | 2788 | return SCM_BOOL (SCM_PUREGENERICP (obj)); |
80662eda | 2789 | } |
398d8ee1 | 2790 | #undef FUNC_NAME |
80662eda MD |
2791 | |
2792 | #endif /* GUILE_DEBUG */ | |
2793 | ||
2794 | /* | |
2795 | * Initialization | |
2796 | */ | |
2797 | ||
398d8ee1 KN |
2798 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2799 | (), | |
6bcefd15 MG |
2800 | "Announce that GOOPS is loaded and perform initialization\n" |
2801 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2802 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2803 | { |
2804 | goops_loaded_p = 1; | |
86d31dfe MV |
2805 | var_compute_applicable_methods = |
2806 | scm_sym2var (sym_compute_applicable_methods, scm_goops_lookup_closure, | |
2807 | SCM_BOOL_F); | |
a48d60b1 | 2808 | setup_extended_primitive_generics (); |
80662eda MD |
2809 | return SCM_UNSPECIFIED; |
2810 | } | |
398d8ee1 | 2811 | #undef FUNC_NAME |
80662eda MD |
2812 | |
2813 | SCM scm_module_goops; | |
2814 | ||
abd28220 MV |
2815 | SCM |
2816 | scm_init_goops_builtins (void) | |
80662eda | 2817 | { |
abd28220 | 2818 | scm_module_goops = scm_current_module (); |
80662eda MD |
2819 | scm_goops_lookup_closure = scm_module_lookup_closure (scm_module_goops); |
2820 | ||
6d77c894 | 2821 | /* Not really necessary right now, but who knows... |
0ba8a0a5 MV |
2822 | */ |
2823 | scm_permanent_object (scm_module_goops); | |
2824 | scm_permanent_object (scm_goops_lookup_closure); | |
2825 | ||
80662eda MD |
2826 | scm_components = scm_permanent_object (scm_make_weak_key_hash_table |
2827 | (SCM_MAKINUM (37))); | |
2828 | ||
2829 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); | |
2830 | ||
2831 | #include "libguile/goops.x" | |
2832 | ||
1afff620 | 2833 | list_of_no_method = scm_permanent_object (scm_list_1 (sym_no_method)); |
80662eda | 2834 | |
4c9419ac | 2835 | hell = scm_malloc (hell_size); |
2132f0d2 | 2836 | hell_mutex = scm_permanent_object (scm_make_mutex ()); |
80662eda MD |
2837 | |
2838 | create_basic_classes (); | |
2839 | create_standard_classes (); | |
2840 | create_smob_classes (); | |
2841 | create_struct_classes (); | |
2842 | create_port_classes (); | |
2843 | ||
2844 | { | |
38ae064c | 2845 | SCM name = scm_str2symbol ("no-applicable-method"); |
80662eda | 2846 | scm_no_applicable_method |
1afff620 KN |
2847 | = scm_permanent_object (scm_make (scm_list_3 (scm_class_generic, |
2848 | k_name, | |
2849 | name))); | |
80662eda MD |
2850 | DEFVAR (name, scm_no_applicable_method); |
2851 | } | |
abd28220 MV |
2852 | |
2853 | return SCM_UNSPECIFIED; | |
80662eda MD |
2854 | } |
2855 | ||
2856 | void | |
abd28220 | 2857 | scm_init_goops () |
80662eda | 2858 | { |
9a441ddb MV |
2859 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2860 | scm_init_goops_builtins); | |
80662eda | 2861 | } |
23437298 DH |
2862 | |
2863 | /* | |
2864 | Local Variables: | |
2865 | c-file-style: "gnu" | |
2866 | End: | |
2867 | */ |