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950cc72b | 1 | /* Copyright (C) 1995, 1996, 1999, 2000 Free Software Foundation, Inc. |
1d9ee7c7 MD |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
1d9ee7c7 MD |
45 | \f |
46 | ||
da7f71d7 MD |
47 | /* This file and objects.h contains those minimal pieces of the Guile |
48 | * Object Oriented Programming System which need to be included in | |
49 | * libguile. See the comments in objects.h. | |
1d9ee7c7 MD |
50 | */ |
51 | ||
a0599745 MD |
52 | #include "libguile/_scm.h" |
53 | ||
54 | #include "libguile/struct.h" | |
55 | #include "libguile/procprop.h" | |
56 | #include "libguile/chars.h" | |
57 | #include "libguile/keywords.h" | |
58 | #include "libguile/smob.h" | |
59 | #include "libguile/eval.h" | |
60 | #include "libguile/alist.h" | |
61 | #include "libguile/ports.h" | |
62 | #include "libguile/strings.h" | |
63 | #include "libguile/vectors.h" | |
64 | ||
65 | #include "libguile/validate.h" | |
66 | #include "libguile/objects.h" | |
1d9ee7c7 MD |
67 | \f |
68 | ||
69 | SCM scm_metaclass_standard; | |
da7f71d7 | 70 | SCM scm_metaclass_operator; |
1d9ee7c7 | 71 | |
ab7288bc MD |
72 | /* These variables are filled in by the object system when loaded. */ |
73 | SCM scm_class_boolean, scm_class_char, scm_class_pair; | |
74 | SCM scm_class_procedure, scm_class_string, scm_class_symbol; | |
9de33deb | 75 | SCM scm_class_procedure_with_setter, scm_class_primitive_generic; |
ab7288bc | 76 | SCM scm_class_vector, scm_class_null; |
ed6e0c83 MD |
77 | SCM scm_class_integer, scm_class_real, scm_class_complex; |
78 | SCM scm_class_unknown; | |
ab7288bc | 79 | |
d0efbe61 | 80 | SCM *scm_port_class = 0; |
ed6e0c83 MD |
81 | SCM *scm_smob_class = 0; |
82 | ||
9de33deb MD |
83 | SCM scm_no_applicable_method; |
84 | ||
ed6e0c83 | 85 | SCM (*scm_make_extended_class) (char *type_name); |
c1636627 | 86 | void (*scm_make_port_classes) (int ptobnum, char *type_name); |
ab7288bc MD |
87 | void (*scm_change_object_class) (SCM, SCM, SCM); |
88 | ||
89 | /* This function is used for efficient type dispatch. */ | |
90 | SCM | |
91 | scm_class_of (SCM x) | |
92 | { | |
93 | switch (SCM_ITAG3 (x)) | |
94 | { | |
95 | case scm_tc3_int_1: | |
96 | case scm_tc3_int_2: | |
97 | return scm_class_integer; | |
98 | ||
99 | case scm_tc3_imm24: | |
7866a09b | 100 | if (SCM_CHARP (x)) |
ab7288bc MD |
101 | return scm_class_char; |
102 | else | |
103 | { | |
104 | switch (SCM_ISYMNUM (x)) | |
105 | { | |
106 | case SCM_ISYMNUM (SCM_BOOL_F): | |
107 | case SCM_ISYMNUM (SCM_BOOL_T): | |
108 | return scm_class_boolean; | |
109 | case SCM_ISYMNUM (SCM_EOL): | |
110 | return scm_class_null; | |
111 | default: | |
112 | return scm_class_unknown; | |
113 | } | |
114 | } | |
115 | ||
116 | case scm_tc3_cons: | |
117 | switch (SCM_TYP7 (x)) | |
118 | { | |
119 | case scm_tcs_cons_nimcar: | |
120 | return scm_class_pair; | |
121 | case scm_tcs_closures: | |
122 | return scm_class_procedure; | |
123 | case scm_tcs_symbols: | |
124 | return scm_class_symbol; | |
125 | case scm_tc7_vector: | |
126 | case scm_tc7_wvect: | |
afe5177e | 127 | #ifdef HAVE_ARRAYS |
ab7288bc MD |
128 | case scm_tc7_bvect: |
129 | case scm_tc7_byvect: | |
130 | case scm_tc7_svect: | |
131 | case scm_tc7_ivect: | |
132 | case scm_tc7_uvect: | |
133 | case scm_tc7_fvect: | |
134 | case scm_tc7_dvect: | |
135 | case scm_tc7_cvect: | |
afe5177e | 136 | #endif |
ab7288bc MD |
137 | return scm_class_vector; |
138 | case scm_tc7_string: | |
139 | case scm_tc7_substring: | |
140 | return scm_class_string; | |
141 | case scm_tc7_asubr: | |
142 | case scm_tc7_subr_0: | |
143 | case scm_tc7_subr_1: | |
144 | case scm_tc7_cxr: | |
145 | case scm_tc7_subr_3: | |
146 | case scm_tc7_subr_2: | |
147 | case scm_tc7_rpsubr: | |
148 | case scm_tc7_subr_1o: | |
149 | case scm_tc7_subr_2o: | |
150 | case scm_tc7_lsubr_2: | |
151 | case scm_tc7_lsubr: | |
9de33deb MD |
152 | if (SCM_SUBR_GENERIC (x) && *SCM_SUBR_GENERIC (x)) |
153 | return scm_class_primitive_generic; | |
154 | else | |
155 | return scm_class_procedure; | |
ed6e0c83 | 156 | case scm_tc7_cclo: |
ab7288bc MD |
157 | return scm_class_procedure; |
158 | case scm_tc7_pws: | |
159 | return scm_class_procedure_with_setter; | |
160 | ||
ab7288bc MD |
161 | case scm_tc7_smob: |
162 | { | |
c209c88e | 163 | long type = SCM_TYP16 (x); |
950cc72b | 164 | if (type != scm_tc16_port_with_ps) |
ed6e0c83 | 165 | return scm_smob_class[SCM_TC2SMOBNUM (type)]; |
55d54750 MD |
166 | x = SCM_PORT_WITH_PS_PORT (x); |
167 | /* fall through to ports */ | |
ab7288bc | 168 | } |
55d54750 | 169 | case scm_tc7_port: |
f1267706 MD |
170 | return scm_port_class[(SCM_WRTNG & SCM_UNPACK_CAR (x) |
171 | ? (SCM_RDNG & SCM_UNPACK_CAR (x) | |
55d54750 MD |
172 | ? SCM_INOUT_PCLASS_INDEX | SCM_PTOBNUM (x) |
173 | : SCM_OUT_PCLASS_INDEX | SCM_PTOBNUM (x)) | |
174 | : SCM_IN_PCLASS_INDEX | SCM_PTOBNUM (x))]; | |
ab7288bc MD |
175 | case scm_tcs_cons_gloc: |
176 | /* must be a struct */ | |
7151229d MD |
177 | if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS_VALID) |
178 | return SCM_CLASS_OF (x); | |
179 | else if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS) | |
ed6e0c83 MD |
180 | { |
181 | /* Goops object */ | |
54778cd3 | 182 | if (! SCM_FALSEP (SCM_OBJ_CLASS_REDEF (x))) |
ed6e0c83 MD |
183 | scm_change_object_class (x, |
184 | SCM_CLASS_OF (x), /* old */ | |
185 | SCM_OBJ_CLASS_REDEF (x)); /* new */ | |
186 | return SCM_CLASS_OF (x); | |
187 | } | |
188 | else | |
189 | { | |
190 | /* ordinary struct */ | |
191 | SCM handle = scm_struct_create_handle (SCM_STRUCT_VTABLE (x)); | |
192 | if (SCM_NFALSEP (SCM_STRUCT_TABLE_CLASS (SCM_CDR (handle)))) | |
193 | return SCM_STRUCT_TABLE_CLASS (SCM_CDR (handle)); | |
194 | else | |
195 | { | |
196 | SCM name = SCM_STRUCT_TABLE_NAME (SCM_CDR (handle)); | |
197 | SCM class = scm_make_extended_class (SCM_NFALSEP (name) | |
198 | ? SCM_ROCHARS (name) | |
199 | : 0); | |
11f2a643 | 200 | SCM_SET_STRUCT_TABLE_CLASS (SCM_CDR (handle), class); |
ed6e0c83 MD |
201 | return class; |
202 | } | |
203 | } | |
ab7288bc MD |
204 | default: |
205 | if (SCM_CONSP (x)) | |
206 | return scm_class_pair; | |
207 | else | |
208 | return scm_class_unknown; | |
209 | } | |
210 | ||
211 | case scm_tc3_cons_gloc: | |
212 | case scm_tc3_tc7_1: | |
213 | case scm_tc3_tc7_2: | |
214 | case scm_tc3_closure: | |
215 | /* Never reached */ | |
216 | break; | |
217 | } | |
218 | return scm_class_unknown; | |
219 | } | |
220 | ||
a12be546 MD |
221 | /* (SCM_IM_DISPATCH ARGS N-SPECIALIZED |
222 | * #((TYPE1 ... ENV FORMALS FORM ...) ...) | |
223 | * GF) | |
224 | * | |
225 | * (SCM_IM_HASH_DISPATCH ARGS N-SPECIALIZED HASHSET MASK | |
226 | * #((TYPE1 ... ENV FORMALS FORM ...) ...) | |
227 | * GF) | |
228 | * | |
229 | * ARGS is either a list of expressions, in which case they | |
230 | * are interpreted as the arguments of an application, or | |
231 | * a non-pair, which is interpreted as a single expression | |
232 | * yielding all arguments. | |
233 | * | |
234 | * SCM_IM_DISPATCH expressions in generic functions always | |
235 | * have ARGS = the symbol `args' or the iloc #@0-0. | |
236 | * | |
237 | * Need FORMALS in order to support varying arity. This | |
238 | * also avoids the need for renaming of bindings. | |
239 | * | |
240 | * We should probably not complicate this mechanism by | |
241 | * introducing "optimizations" for getters and setters or | |
242 | * primitive methods. Getters and setter will normally be | |
243 | * compiled into @slot-[ref|set!] or a procedure call. | |
244 | * They rely on the dispatch performed before executing | |
245 | * the code which contains them. | |
246 | * | |
247 | * We might want to use a more efficient representation of | |
248 | * this form in the future, perhaps after we have introduced | |
249 | * low-level support for syntax-case macros. | |
250 | */ | |
251 | ||
9de33deb MD |
252 | SCM |
253 | scm_mcache_lookup_cmethod (SCM cache, SCM args) | |
254 | { | |
255 | int i, n, end, mask; | |
256 | SCM ls, methods, z = SCM_CDDR (cache); | |
257 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
258 | methods = SCM_CADR (z); | |
259 | ||
260 | if (SCM_NIMP (methods)) | |
261 | { | |
262 | /* Prepare for linear search */ | |
263 | mask = -1; | |
264 | i = 0; | |
265 | end = SCM_LENGTH (methods); | |
266 | } | |
267 | else | |
268 | { | |
269 | /* Compute a hash value */ | |
270 | int hashset = SCM_INUM (methods); | |
271 | int j = n; | |
272 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
273 | methods = SCM_CADR (z); | |
274 | i = 0; | |
275 | ls = args; | |
a12be546 MD |
276 | if (SCM_NIMP (ls)) |
277 | do | |
278 | { | |
d8c40b9f DH |
279 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (ls))) |
280 | [scm_si_hashsets + hashset]; | |
a12be546 MD |
281 | ls = SCM_CDR (ls); |
282 | } | |
283 | while (--j && SCM_NIMP (ls)); | |
9de33deb MD |
284 | i &= mask; |
285 | end = i; | |
286 | } | |
287 | ||
288 | /* Search for match */ | |
289 | do | |
290 | { | |
291 | int j = n; | |
292 | z = SCM_VELTS (methods)[i]; | |
293 | ls = args; /* list of arguments */ | |
a12be546 MD |
294 | if (SCM_NIMP (ls)) |
295 | do | |
296 | { | |
297 | /* More arguments than specifiers => CLASS != ENV */ | |
54778cd3 | 298 | if (! SCM_EQ_P (scm_class_of (SCM_CAR (ls)), SCM_CAR (z))) |
a12be546 MD |
299 | goto next_method; |
300 | ls = SCM_CDR (ls); | |
301 | z = SCM_CDR (z); | |
302 | } | |
303 | while (--j && SCM_NIMP (ls)); | |
9de33deb | 304 | /* Fewer arguments than specifiers => CAR != ENV */ |
0824bbb3 | 305 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) |
9de33deb MD |
306 | goto next_method; |
307 | return z; | |
308 | next_method: | |
309 | i = (i + 1) & mask; | |
310 | } while (i != end); | |
311 | return SCM_BOOL_F; | |
312 | } | |
313 | ||
314 | SCM | |
a12be546 | 315 | scm_mcache_compute_cmethod (SCM cache, SCM args) |
9de33deb MD |
316 | { |
317 | SCM cmethod = scm_mcache_lookup_cmethod (cache, args); | |
318 | if (SCM_IMP (cmethod)) | |
319 | /* No match - memoize */ | |
320 | return scm_memoize_method (cache, args); | |
321 | return cmethod; | |
322 | } | |
323 | ||
324 | SCM | |
a12be546 | 325 | scm_apply_generic (SCM gf, SCM args) |
9de33deb | 326 | { |
a12be546 | 327 | SCM cmethod = scm_mcache_compute_cmethod (SCM_ENTITY_PROCEDURE (gf), args); |
9de33deb MD |
328 | return scm_eval_body (SCM_CDR (SCM_CMETHOD_CODE (cmethod)), |
329 | SCM_EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (cmethod)), | |
330 | args, | |
331 | SCM_CMETHOD_ENV (cmethod))); | |
332 | } | |
333 | ||
334 | SCM | |
a12be546 | 335 | scm_call_generic_0 (SCM gf) |
9de33deb | 336 | { |
a12be546 | 337 | return scm_apply_generic (gf, SCM_EOL); |
9de33deb MD |
338 | } |
339 | ||
340 | SCM | |
a12be546 | 341 | scm_call_generic_1 (SCM gf, SCM a1) |
9de33deb | 342 | { |
a12be546 | 343 | return scm_apply_generic (gf, SCM_LIST1 (a1)); |
9de33deb MD |
344 | } |
345 | ||
346 | SCM | |
a12be546 MD |
347 | scm_call_generic_2 (SCM gf, SCM a1, SCM a2) |
348 | { | |
349 | return scm_apply_generic (gf, SCM_LIST2 (a1, a2)); | |
350 | } | |
351 | ||
352 | SCM | |
353 | scm_call_generic_3 (SCM gf, SCM a1, SCM a2, SCM a3) | |
9de33deb | 354 | { |
a12be546 | 355 | return scm_apply_generic (gf, SCM_LIST3 (a1, a2, a3)); |
9de33deb MD |
356 | } |
357 | ||
a1ec6916 | 358 | SCM_DEFINE (scm_entity_p, "entity?", 1, 0, 0, |
1bbd0b84 | 359 | (SCM obj), |
717050c8 | 360 | "") |
1bbd0b84 | 361 | #define FUNC_NAME s_scm_entity_p |
19c0dec2 | 362 | { |
0c95b57d | 363 | return SCM_BOOL(SCM_STRUCTP (obj) && SCM_I_ENTITYP (obj)); |
19c0dec2 | 364 | } |
1bbd0b84 | 365 | #undef FUNC_NAME |
19c0dec2 | 366 | |
a1ec6916 | 367 | SCM_DEFINE (scm_operator_p, "operator?", 1, 0, 0, |
1bbd0b84 | 368 | (SCM obj), |
717050c8 | 369 | "") |
1bbd0b84 | 370 | #define FUNC_NAME s_scm_operator_p |
a43a8375 | 371 | { |
0b5f3f34 | 372 | return SCM_BOOL(SCM_STRUCTP (obj) |
1bbd0b84 GB |
373 | && SCM_I_OPERATORP (obj) |
374 | && !SCM_I_ENTITYP (obj)); | |
a43a8375 | 375 | } |
1bbd0b84 | 376 | #undef FUNC_NAME |
a43a8375 | 377 | |
a1ec6916 | 378 | SCM_DEFINE (scm_set_object_procedure_x, "set-object-procedure!", 2, 0, 0, |
1bbd0b84 | 379 | (SCM obj, SCM proc), |
717050c8 | 380 | "") |
1bbd0b84 | 381 | #define FUNC_NAME s_scm_set_object_procedure_x |
47b21050 | 382 | { |
0c95b57d | 383 | SCM_ASSERT (SCM_STRUCTP (obj) |
c1a6fd8f MD |
384 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
385 | || (SCM_I_ENTITYP (obj) | |
386 | && !(SCM_OBJ_CLASS_FLAGS (obj) | |
387 | & SCM_CLASSF_PURE_GENERIC))), | |
47b21050 MD |
388 | obj, |
389 | SCM_ARG1, | |
1bbd0b84 | 390 | FUNC_NAME); |
3b3b36dd | 391 | SCM_VALIDATE_PROC (2,proc); |
a12be546 | 392 | if (SCM_I_ENTITYP (obj)) |
d8c40b9f | 393 | SCM_SET_ENTITY_PROCEDURE (obj, proc); |
a12be546 MD |
394 | else |
395 | SCM_OPERATOR_CLASS (obj)->procedure = proc; | |
47b21050 MD |
396 | return SCM_UNSPECIFIED; |
397 | } | |
1bbd0b84 | 398 | #undef FUNC_NAME |
47b21050 | 399 | |
a43a8375 | 400 | #ifdef GUILE_DEBUG |
a1ec6916 | 401 | SCM_DEFINE (scm_object_procedure, "object-procedure", 1, 0, 0, |
1bbd0b84 | 402 | (SCM obj), |
717050c8 | 403 | "") |
1bbd0b84 | 404 | #define FUNC_NAME s_scm_object_procedure |
a43a8375 | 405 | { |
0c95b57d | 406 | SCM_ASSERT (SCM_STRUCTP (obj) |
a12be546 MD |
407 | && ((SCM_CLASS_FLAGS (obj) & SCM_CLASSF_OPERATOR) |
408 | || SCM_I_ENTITYP (obj)), | |
1bbd0b84 | 409 | obj, SCM_ARG1, FUNC_NAME); |
a43a8375 | 410 | return (SCM_I_ENTITYP (obj) |
a12be546 MD |
411 | ? SCM_ENTITY_PROCEDURE (obj) |
412 | : SCM_OPERATOR_CLASS (obj)->procedure); | |
a43a8375 | 413 | } |
1bbd0b84 | 414 | #undef FUNC_NAME |
a43a8375 MD |
415 | #endif /* GUILE_DEBUG */ |
416 | ||
ed6e0c83 MD |
417 | /* The following procedures are not a part of Goops but a minimal |
418 | * object system built upon structs. They are here for those who | |
419 | * want to implement their own object system. | |
420 | */ | |
421 | ||
036737fc MD |
422 | SCM |
423 | scm_i_make_class_object (SCM meta, | |
424 | SCM layout_string, | |
425 | unsigned long flags) | |
47b21050 MD |
426 | { |
427 | SCM c; | |
036737fc | 428 | SCM layout = scm_make_struct_layout (layout_string); |
47b21050 MD |
429 | c = scm_make_struct (meta, |
430 | SCM_INUM0, | |
431 | SCM_LIST4 (layout, SCM_BOOL_F, SCM_EOL, SCM_EOL)); | |
432 | SCM_SET_CLASS_FLAGS (c, flags); | |
433 | return c; | |
434 | } | |
435 | ||
a1ec6916 | 436 | SCM_DEFINE (scm_make_class_object, "make-class-object", 2, 0, 0, |
1bbd0b84 | 437 | (SCM metaclass, SCM layout), |
717050c8 | 438 | "") |
1bbd0b84 | 439 | #define FUNC_NAME s_scm_make_class_object |
47b21050 MD |
440 | { |
441 | unsigned long flags = 0; | |
3b3b36dd GB |
442 | SCM_VALIDATE_STRUCT (1,metaclass); |
443 | SCM_VALIDATE_STRING (2,layout); | |
54778cd3 | 444 | if (SCM_EQ_P (metaclass, scm_metaclass_operator)) |
47b21050 | 445 | flags = SCM_CLASSF_OPERATOR; |
036737fc | 446 | return scm_i_make_class_object (metaclass, layout, flags); |
47b21050 | 447 | } |
1bbd0b84 | 448 | #undef FUNC_NAME |
47b21050 | 449 | |
a1ec6916 | 450 | SCM_DEFINE (scm_make_subclass_object, "make-subclass-object", 2, 0, 0, |
1bbd0b84 | 451 | (SCM class, SCM layout), |
717050c8 | 452 | "") |
1bbd0b84 | 453 | #define FUNC_NAME s_scm_make_subclass_object |
47b21050 MD |
454 | { |
455 | SCM pl; | |
3b3b36dd GB |
456 | SCM_VALIDATE_STRUCT (1,class); |
457 | SCM_VALIDATE_STRING (2,layout); | |
d8c40b9f | 458 | pl = SCM_PACK (SCM_STRUCT_DATA (class) [scm_vtable_index_layout]); |
036737fc | 459 | /* Convert symbol->string */ |
47b21050 | 460 | pl = scm_makfromstr (SCM_CHARS (pl), (scm_sizet) SCM_LENGTH (pl), 0); |
036737fc MD |
461 | return scm_i_make_class_object (SCM_STRUCT_VTABLE (class), |
462 | scm_string_append (SCM_LIST2 (pl, layout)), | |
463 | SCM_CLASS_FLAGS (class)); | |
47b21050 | 464 | } |
1bbd0b84 | 465 | #undef FUNC_NAME |
47b21050 | 466 | |
1d9ee7c7 MD |
467 | void |
468 | scm_init_objects () | |
469 | { | |
470 | SCM ms = scm_makfrom0str (SCM_METACLASS_STANDARD_LAYOUT); | |
471 | SCM ml = scm_make_struct_layout (ms); | |
472 | SCM mt = scm_make_vtable_vtable (ml, SCM_INUM0, | |
473 | SCM_LIST3 (SCM_BOOL_F, SCM_EOL, SCM_EOL)); | |
474 | ||
da7f71d7 MD |
475 | SCM os = scm_makfrom0str (SCM_METACLASS_OPERATOR_LAYOUT); |
476 | SCM ol = scm_make_struct_layout (os); | |
477 | SCM ot = scm_make_vtable_vtable (ol, SCM_INUM0, | |
478 | SCM_LIST3 (SCM_BOOL_F, SCM_EOL, SCM_EOL)); | |
479 | ||
1d9ee7c7 MD |
480 | SCM es = scm_makfrom0str (SCM_ENTITY_LAYOUT); |
481 | SCM el = scm_make_struct_layout (es); | |
482 | SCM et = scm_make_struct (mt, SCM_INUM0, | |
483 | SCM_LIST4 (el, SCM_BOOL_F, SCM_EOL, SCM_EOL)); | |
484 | ||
19c0dec2 | 485 | scm_sysintern ("<class>", mt); |
1d9ee7c7 | 486 | scm_metaclass_standard = mt; |
af3645c5 | 487 | scm_sysintern ("<operator-class>", ot); |
da7f71d7 MD |
488 | scm_metaclass_operator = ot; |
489 | SCM_SET_CLASS_FLAGS (et, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY); | |
135e76f8 | 490 | SCM_SET_CLASS_DESTRUCTOR (et, scm_struct_free_entity); |
af3645c5 | 491 | scm_sysintern ("<entity>", et); |
47b21050 | 492 | |
a0599745 | 493 | #include "libguile/objects.x" |
1d9ee7c7 | 494 | } |
89e00824 ML |
495 | |
496 | /* | |
497 | Local Variables: | |
498 | c-file-style: "gnu" | |
499 | End: | |
500 | */ |