1 /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012,2013,2014,2015
2 * Free Software Foundation, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public License
6 * as published by the Free Software Foundation; either version 3 of
7 * the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 /* This software is a derivative work of other copyrighted softwares; the
22 * copyright notices of these softwares are placed in the file COPYRIGHTS
24 * This file is based upon stklos.c from the STk distribution by
25 * Erick Gallesio <eg@unice.fr>.
34 #include "libguile/_scm.h"
35 #include "libguile/alist.h"
36 #include "libguile/async.h"
37 #include "libguile/chars.h"
38 #include "libguile/debug.h"
39 #include "libguile/dynl.h"
40 #include "libguile/dynwind.h"
41 #include "libguile/eval.h"
42 #include "libguile/gsubr.h"
43 #include "libguile/hashtab.h"
44 #include "libguile/keywords.h"
45 #include "libguile/macros.h"
46 #include "libguile/modules.h"
47 #include "libguile/ports.h"
48 #include "libguile/procprop.h"
49 #include "libguile/programs.h"
50 #include "libguile/random.h"
51 #include "libguile/root.h"
52 #include "libguile/smob.h"
53 #include "libguile/strings.h"
54 #include "libguile/strports.h"
55 #include "libguile/vectors.h"
56 #include "libguile/vm.h"
58 #include "libguile/validate.h"
59 #include "libguile/goops.h"
61 #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers)
64 #define SCM_IN_PCLASS_INDEX 0
65 #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT
66 #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT)
68 /* this file is a mess. in theory, though, we shouldn't have many SCM references
69 -- most of the references should be to vars. */
71 static SCM var_slot_unbound
= SCM_BOOL_F
;
72 static SCM var_slot_missing
= SCM_BOOL_F
;
73 static SCM var_compute_cpl
= SCM_BOOL_F
;
74 static SCM var_no_applicable_method
= SCM_BOOL_F
;
75 static SCM var_change_class
= SCM_BOOL_F
;
77 SCM_SYMBOL (sym_slot_unbound
, "slot-unbound");
78 SCM_SYMBOL (sym_slot_missing
, "slot-missing");
79 SCM_SYMBOL (sym_compute_cpl
, "compute-cpl");
80 SCM_SYMBOL (sym_no_applicable_method
, "no-applicable-method");
81 SCM_SYMBOL (sym_memoize_method_x
, "memoize-method!");
82 SCM_SYMBOL (sym_change_class
, "change-class");
84 SCM_VARIABLE (scm_var_make_extended_generic
, "make-extended-generic");
87 /* Class redefinition protocol:
89 A class is represented by a heap header h1 which points to a
90 malloc:ed memory block m1.
92 When a new version of a class is created, a new header h2 and
93 memory block m2 are allocated. The headers h1 and h2 then switch
94 pointers so that h1 refers to m2 and h2 to m1. In this way, names
95 bound to h1 will point to the new class at the same time as h2 will
96 be a handle which the GC will use to free m1.
98 The `redefined' slot of m1 will be set to point to h1. An old
99 instance will have its class pointer (the CAR of the heap header)
100 pointing to m1. The non-immediate `redefined'-slot in m1 indicates
101 the class modification and the new class pointer can be found via
105 #define TEST_CHANGE_CLASS(obj, class) \
107 class = SCM_CLASS_OF (obj); \
108 if (scm_is_true (SCM_OBJ_CLASS_REDEF (obj))) \
110 scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\
111 class = SCM_CLASS_OF (obj); \
115 #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1])
116 #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2])
118 #define SCM_GOOPS_UNBOUND SCM_UNBOUND
119 #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND))
121 static int goops_loaded_p
= 0;
122 static scm_t_rstate
*goops_rstate
;
124 /* These variables are filled in by the object system when loaded. */
125 SCM scm_class_boolean
, scm_class_char
, scm_class_pair
;
126 SCM scm_class_procedure
, scm_class_string
, scm_class_symbol
;
127 SCM scm_class_primitive_generic
;
128 SCM scm_class_vector
, scm_class_null
;
129 SCM scm_class_integer
, scm_class_real
, scm_class_complex
, scm_class_fraction
;
130 SCM scm_class_unknown
;
131 SCM scm_class_top
, scm_class_object
, scm_class_class
;
132 SCM scm_class_applicable
;
133 SCM scm_class_applicable_struct
, scm_class_applicable_struct_with_setter
;
134 SCM scm_class_generic
, scm_class_generic_with_setter
;
135 SCM scm_class_accessor
;
136 SCM scm_class_extended_generic
, scm_class_extended_generic_with_setter
;
137 SCM scm_class_extended_accessor
;
138 SCM scm_class_method
;
139 SCM scm_class_accessor_method
;
140 SCM scm_class_procedure_class
;
141 SCM scm_class_applicable_struct_class
;
142 SCM scm_class_number
, scm_class_list
;
143 SCM scm_class_keyword
;
144 SCM scm_class_port
, scm_class_input_output_port
;
145 SCM scm_class_input_port
, scm_class_output_port
;
146 SCM scm_class_foreign_slot
;
147 SCM scm_class_self
, scm_class_protected
;
148 SCM scm_class_hidden
, scm_class_opaque
, scm_class_read_only
;
149 SCM scm_class_protected_hidden
, scm_class_protected_opaque
, scm_class_protected_read_only
;
151 SCM scm_class_int
, scm_class_float
, scm_class_double
;
153 static SCM class_foreign
;
154 static SCM class_hashtable
;
155 static SCM class_fluid
;
156 static SCM class_dynamic_state
;
157 static SCM class_frame
;
158 static SCM class_vm_cont
;
159 static SCM class_bytevector
;
160 static SCM class_uvec
;
161 static SCM class_array
;
162 static SCM class_bitvector
;
164 static SCM vtable_class_map
= SCM_BOOL_F
;
166 /* Port classes. Allocate 3 times the maximum number of port types so that
167 input ports, output ports, and in/out ports can be stored at different
168 offsets. See `SCM_IN_PCLASS_INDEX' et al. */
169 SCM scm_port_class
[3 * SCM_I_MAX_PORT_TYPE_COUNT
];
172 SCM scm_smob_class
[SCM_I_MAX_SMOB_TYPE_COUNT
];
174 SCM scm_no_applicable_method
;
176 SCM_SYMBOL (scm_sym_define_public
, "define-public");
178 static SCM
scm_make_unbound (void);
179 static SCM
scm_unbound_p (SCM obj
);
180 static SCM
scm_assert_bound (SCM value
, SCM obj
);
181 static SCM
scm_at_assert_bound_ref (SCM obj
, SCM index
);
182 static SCM
scm_sys_goops_loaded (void);
183 static SCM
scm_make_extended_class_from_symbol (SCM type_name_sym
,
188 scm_i_define_class_for_vtable (SCM vtable
)
192 scm_i_pthread_mutex_lock (&scm_i_misc_mutex
);
193 if (scm_is_false (vtable_class_map
))
194 vtable_class_map
= scm_c_make_weak_table (0, SCM_WEAK_TABLE_KIND_KEY
);
195 scm_i_pthread_mutex_unlock (&scm_i_misc_mutex
);
197 if (scm_is_false (scm_struct_vtable_p (vtable
)))
200 class = scm_weak_table_refq (vtable_class_map
, vtable
, SCM_BOOL_F
);
202 if (scm_is_false (class))
204 if (SCM_UNPACK (scm_class_class
))
206 SCM name
= SCM_VTABLE_NAME (vtable
);
207 if (!scm_is_symbol (name
))
208 name
= scm_string_to_symbol (scm_nullstr
);
210 class = scm_make_extended_class_from_symbol
211 (name
, SCM_VTABLE_FLAG_IS_SET (vtable
, SCM_VTABLE_FLAG_APPLICABLE
));
214 /* `create_struct_classes' will fill this in later. */
217 /* Don't worry about races. This only happens when creating a
218 vtable, which happens by definition in one thread. */
219 scm_weak_table_putq_x (vtable_class_map
, vtable
, class);
225 /* This function is used for efficient type dispatch. */
226 SCM_DEFINE (scm_class_of
, "class-of", 1, 0, 0,
228 "Return the class of @var{x}.")
229 #define FUNC_NAME s_scm_class_of
231 switch (SCM_ITAG3 (x
))
235 return scm_class_integer
;
239 return scm_class_char
;
240 else if (scm_is_bool (x
))
241 return scm_class_boolean
;
242 else if (scm_is_null (x
))
243 return scm_class_null
;
245 return scm_class_unknown
;
248 switch (SCM_TYP7 (x
))
250 case scm_tcs_cons_nimcar
:
251 return scm_class_pair
;
253 return scm_class_symbol
;
256 return scm_class_vector
;
257 case scm_tc7_pointer
:
258 return class_foreign
;
259 case scm_tc7_hashtable
:
260 return class_hashtable
;
263 case scm_tc7_dynamic_state
:
264 return class_dynamic_state
;
267 case scm_tc7_keyword
:
268 return scm_class_keyword
;
269 case scm_tc7_vm_cont
:
270 return class_vm_cont
;
271 case scm_tc7_bytevector
:
272 if (SCM_BYTEVECTOR_ELEMENT_TYPE (x
) == SCM_ARRAY_ELEMENT_TYPE_VU8
)
273 return class_bytevector
;
278 case scm_tc7_bitvector
:
279 return class_bitvector
;
281 return scm_class_string
;
283 switch SCM_TYP16 (x
) {
285 return scm_class_integer
;
287 return scm_class_real
;
288 case scm_tc16_complex
:
289 return scm_class_complex
;
290 case scm_tc16_fraction
:
291 return scm_class_fraction
;
293 case scm_tc7_program
:
294 if (SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x
)
295 && SCM_UNPACK (*SCM_SUBR_GENERIC (x
)))
296 return scm_class_primitive_generic
;
298 return scm_class_procedure
;
302 scm_t_bits type
= SCM_TYP16 (x
);
303 if (type
!= scm_tc16_port_with_ps
)
304 return scm_smob_class
[SCM_TC2SMOBNUM (type
)];
305 x
= SCM_PORT_WITH_PS_PORT (x
);
306 /* fall through to ports */
309 return scm_port_class
[(SCM_WRTNG
& SCM_CELL_WORD_0 (x
)
310 ? (SCM_RDNG
& SCM_CELL_WORD_0 (x
)
311 ? SCM_INOUT_PCLASS_INDEX
| SCM_PTOBNUM (x
)
312 : SCM_OUT_PCLASS_INDEX
| SCM_PTOBNUM (x
))
313 : SCM_IN_PCLASS_INDEX
| SCM_PTOBNUM (x
))];
315 if (SCM_OBJ_CLASS_FLAGS (x
) & SCM_CLASSF_GOOPS_VALID
)
316 return SCM_CLASS_OF (x
);
317 else if (SCM_OBJ_CLASS_FLAGS (x
) & SCM_CLASSF_GOOPS
)
320 if (! scm_is_false (SCM_OBJ_CLASS_REDEF (x
)))
321 scm_change_object_class (x
,
322 SCM_CLASS_OF (x
), /* old */
323 SCM_OBJ_CLASS_REDEF (x
)); /* new */
324 return SCM_CLASS_OF (x
);
327 return scm_i_define_class_for_vtable (SCM_CLASS_OF (x
));
330 return scm_class_pair
;
332 return scm_class_unknown
;
338 /* case scm_tc3_unused: */
342 return scm_class_unknown
;
346 /******************************************************************************
350 * This version doesn't fully handle multiple-inheritance. It serves
351 * only for booting classes and will be overloaded in Scheme
353 ******************************************************************************/
356 map (SCM (*proc
) (SCM
), SCM ls
)
358 if (scm_is_null (ls
))
362 SCM res
= scm_cons (proc (SCM_CAR (ls
)), SCM_EOL
);
365 while (scm_is_pair (ls
))
367 SCM_SETCDR (h
, scm_cons (proc (SCM_CAR (ls
)), SCM_EOL
));
379 while (scm_is_pair (ls
))
381 SCM el
= SCM_CAR (ls
);
382 if (scm_is_false (scm_c_memq (el
, res
)))
383 res
= scm_cons (el
, res
);
390 compute_cpl (SCM
class)
393 return scm_call_1 (SCM_VARIABLE_REF (var_compute_cpl
), class);
396 SCM supers
= SCM_SLOT (class, scm_si_direct_supers
);
397 SCM ls
= scm_append (scm_acons (class, supers
,
398 map (compute_cpl
, supers
)));
399 return scm_reverse_x (filter_cpl (ls
), SCM_EOL
);
403 /******************************************************************************
407 ******************************************************************************/
410 remove_duplicate_slots (SCM l
, SCM res
, SCM slots_already_seen
)
414 if (!scm_is_pair (l
))
418 if (!scm_is_symbol (tmp
))
419 scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp
));
421 if (scm_is_false (scm_c_memq (tmp
, slots_already_seen
))) {
422 res
= scm_cons (SCM_CAR (l
), res
);
423 slots_already_seen
= scm_cons (tmp
, slots_already_seen
);
426 return remove_duplicate_slots (SCM_CDR (l
), res
, slots_already_seen
);
430 check_cpl (SCM slots
, SCM bslots
)
432 for (; scm_is_pair (bslots
); bslots
= SCM_CDR (bslots
))
433 if (scm_is_true (scm_assq (SCM_CAAR (bslots
), slots
)))
434 scm_misc_error ("init-object", "a predefined <class> inherited "
435 "field cannot be redefined", SCM_EOL
);
439 build_class_class_slots (void);
442 build_slots_list (SCM dslots
, SCM cpl
)
444 SCM bslots
, class_slots
;
448 class_slots
= SCM_EOL
;
449 classp
= scm_is_true (scm_memq (scm_class_class
, cpl
));
453 bslots
= build_class_class_slots ();
454 check_cpl (res
, bslots
);
459 if (scm_is_pair (cpl
))
461 for (cpl
= SCM_CDR (cpl
); scm_is_pair (cpl
); cpl
= SCM_CDR (cpl
))
463 SCM new_slots
= SCM_SLOT (SCM_CAR (cpl
),
464 scm_si_direct_slots
);
467 if (!scm_is_eq (SCM_CAR (cpl
), scm_class_class
))
468 check_cpl (new_slots
, bslots
);
471 /* Move class slots to the head of the list. */
472 class_slots
= new_slots
;
476 res
= scm_append (scm_list_2 (new_slots
, res
));
480 scm_misc_error ("%compute-slots", "malformed cpl argument in "
481 "build_slots_list", SCM_EOL
);
483 /* make sure to add the <class> slots to the head of the list */
485 res
= scm_append (scm_list_2 (class_slots
, res
));
487 /* res contains a list of slots. Remove slots which appears more than once */
488 return remove_duplicate_slots (scm_reverse (res
), SCM_EOL
, SCM_EOL
);
495 while (!scm_is_null (ls
))
497 if (!scm_is_pair (ls
))
498 scm_misc_error ("%compute-slots", "malformed ls argument in "
500 if (!scm_is_pair (SCM_CAR (ls
)))
501 SCM_SETCAR (ls
, scm_cons (SCM_CAR (ls
), SCM_EOL
));
508 SCM_DEFINE (scm_sys_compute_slots
, "%compute-slots", 1, 0, 0,
510 "Return a list consisting of the names of all slots belonging to\n"
511 "class @var{class}, i. e. the slots of @var{class} and of all of\n"
513 #define FUNC_NAME s_scm_sys_compute_slots
515 SCM_VALIDATE_CLASS (1, class);
516 return build_slots_list (SCM_SLOT (class, scm_si_direct_slots
),
517 SCM_SLOT (class, scm_si_cpl
));
522 /******************************************************************************
524 * compute-getters-n-setters
526 * This version doesn't handle slot options. It serves only for booting
527 * classes and will be overloaded in Scheme.
529 ******************************************************************************/
531 SCM_KEYWORD (k_init_value
, "init-value");
532 SCM_KEYWORD (k_init_thunk
, "init-thunk");
535 compute_getters_n_setters (SCM slots
)
541 for ( ; !scm_is_null (slots
); slots
= SCM_CDR (slots
))
543 SCM init
= SCM_BOOL_F
;
544 SCM options
= SCM_CDAR (slots
);
545 if (!scm_is_null (options
))
547 init
= scm_get_keyword (k_init_value
, options
, SCM_PACK (0));
548 if (SCM_UNPACK (init
))
550 init
= scm_primitive_eval (scm_list_3 (scm_sym_lambda
,
552 scm_list_2 (scm_sym_quote
,
556 init
= scm_get_keyword (k_init_thunk
, options
, SCM_BOOL_F
);
558 *cdrloc
= scm_cons (scm_cons (SCM_CAAR (slots
),
560 scm_from_int (i
++))),
562 cdrloc
= SCM_CDRLOC (*cdrloc
);
567 /******************************************************************************
571 ******************************************************************************/
573 /*fixme* Manufacture keywords in advance */
575 scm_i_get_keyword (SCM key
, SCM l
, long len
, SCM default_value
, const char *subr
)
579 for (i
= 0; i
!= len
; i
+= 2)
581 SCM obj
= SCM_CAR (l
);
583 if (!scm_is_keyword (obj
))
584 scm_misc_error (subr
, "bad keyword: ~S", scm_list_1 (obj
));
585 else if (scm_is_eq (obj
, key
))
591 return default_value
;
595 SCM_DEFINE (scm_get_keyword
, "get-keyword", 3, 0, 0,
596 (SCM key
, SCM l
, SCM default_value
),
597 "Determine an associated value for the keyword @var{key} from\n"
598 "the list @var{l}. The list @var{l} has to consist of an even\n"
599 "number of elements, where, starting with the first, every\n"
600 "second element is a keyword, followed by its associated value.\n"
601 "If @var{l} does not hold a value for @var{key}, the value\n"
602 "@var{default_value} is returned.")
603 #define FUNC_NAME s_scm_get_keyword
607 SCM_ASSERT (scm_is_keyword (key
), key
, SCM_ARG1
, FUNC_NAME
);
608 len
= scm_ilength (l
);
609 if (len
< 0 || len
% 2 == 1)
610 scm_misc_error (FUNC_NAME
, "Bad keyword-value list: ~S", scm_list_1 (l
));
612 return scm_i_get_keyword (key
, l
, len
, default_value
, FUNC_NAME
);
617 SCM_KEYWORD (k_init_keyword
, "init-keyword");
619 static SCM
get_slot_value (SCM
class, SCM obj
, SCM slotdef
);
620 static SCM
set_slot_value (SCM
class, SCM obj
, SCM slotdef
, SCM value
);
622 SCM_DEFINE (scm_sys_initialize_object
, "%initialize-object", 2, 0, 0,
623 (SCM obj
, SCM initargs
),
624 "Initialize the object @var{obj} with the given arguments\n"
626 #define FUNC_NAME s_scm_sys_initialize_object
628 SCM tmp
, get_n_set
, slots
;
629 SCM
class = SCM_CLASS_OF (obj
);
632 SCM_VALIDATE_INSTANCE (1, obj
);
633 n_initargs
= scm_ilength (initargs
);
634 SCM_ASSERT ((n_initargs
& 1) == 0, initargs
, SCM_ARG2
, FUNC_NAME
);
636 get_n_set
= SCM_SLOT (class, scm_si_getters_n_setters
);
637 slots
= SCM_SLOT (class, scm_si_slots
);
639 /* See for each slot how it must be initialized */
641 !scm_is_null (slots
);
642 get_n_set
= SCM_CDR (get_n_set
), slots
= SCM_CDR (slots
))
644 SCM slot_name
= SCM_CAR (slots
);
645 SCM slot_value
= SCM_GOOPS_UNBOUND
;
647 if (!scm_is_null (SCM_CDR (slot_name
)))
649 /* This slot admits (perhaps) to be initialized at creation time */
650 long n
= scm_ilength (SCM_CDR (slot_name
));
651 if (n
& 1) /* odd or -1 */
652 SCM_MISC_ERROR ("class contains bogus slot definition: ~S",
653 scm_list_1 (slot_name
));
654 tmp
= scm_i_get_keyword (k_init_keyword
,
659 slot_name
= SCM_CAR (slot_name
);
660 if (SCM_UNPACK (tmp
))
662 /* an initarg was provided for this slot */
663 if (!scm_is_keyword (tmp
))
664 SCM_MISC_ERROR ("initarg must be a keyword. It was ~S",
666 slot_value
= scm_i_get_keyword (tmp
,
674 if (!SCM_GOOPS_UNBOUNDP (slot_value
))
675 /* set slot to provided value */
676 set_slot_value (class, obj
, SCM_CAR (get_n_set
), slot_value
);
679 /* set slot to its :init-form if it exists */
680 tmp
= SCM_CADAR (get_n_set
);
681 if (scm_is_true (tmp
))
682 set_slot_value (class,
693 /* NOTE: The following macros are interdependent with code
694 * in goops.scm:compute-getters-n-setters
696 #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \
697 (SCM_I_INUMP (SCM_CDDR (gns)) \
698 || (scm_is_pair (SCM_CDDR (gns)) \
699 && scm_is_pair (SCM_CDDDR (gns)) \
700 && scm_is_pair (SCM_CDDDDR (gns))))
701 #define SCM_GNS_INDEX(gns) \
702 (SCM_I_INUMP (SCM_CDDR (gns)) \
703 ? SCM_I_INUM (SCM_CDDR (gns)) \
704 : scm_to_long (SCM_CAR (SCM_CDDDDR (gns))))
705 #define SCM_GNS_SIZE(gns) \
706 (SCM_I_INUMP (SCM_CDDR (gns)) \
708 : scm_to_long (SCM_CADR (SCM_CDDDDR (gns))))
710 SCM_KEYWORD (k_class
, "class");
711 SCM_KEYWORD (k_allocation
, "allocation");
712 SCM_KEYWORD (k_instance
, "instance");
714 SCM_DEFINE (scm_sys_prep_layout_x
, "%prep-layout!", 1, 0, 0,
717 #define FUNC_NAME s_scm_sys_prep_layout_x
719 SCM slots
, getters_n_setters
, nfields
;
720 unsigned long int n
, i
;
724 SCM_VALIDATE_INSTANCE (1, class);
725 slots
= SCM_SLOT (class, scm_si_slots
);
726 getters_n_setters
= SCM_SLOT (class, scm_si_getters_n_setters
);
727 nfields
= SCM_SLOT (class, scm_si_nfields
);
728 if (!SCM_I_INUMP (nfields
) || SCM_I_INUM (nfields
) < 0)
729 SCM_MISC_ERROR ("bad value in nfields slot: ~S",
730 scm_list_1 (nfields
));
731 n
= 2 * SCM_I_INUM (nfields
);
732 if (n
< sizeof (SCM_CLASS_CLASS_LAYOUT
) - 1
733 && SCM_SUBCLASSP (class, scm_class_class
))
734 SCM_MISC_ERROR ("class object doesn't have enough fields: ~S",
735 scm_list_1 (nfields
));
737 layout
= scm_i_make_string (n
, &s
, 0);
739 while (scm_is_pair (getters_n_setters
))
741 if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters
)))
744 int len
, index
, size
;
747 if (i
>= n
|| !scm_is_pair (slots
))
750 /* extract slot type */
751 len
= scm_ilength (SCM_CDAR (slots
));
752 type
= scm_i_get_keyword (k_class
, SCM_CDAR (slots
),
753 len
, SCM_BOOL_F
, FUNC_NAME
);
754 /* determine slot GC protection and access mode */
755 if (scm_is_false (type
))
762 if (!SCM_CLASSP (type
))
763 SCM_MISC_ERROR ("bad slot class", SCM_EOL
);
764 else if (SCM_SUBCLASSP (type
, scm_class_foreign_slot
))
766 if (SCM_SUBCLASSP (type
, scm_class_self
))
768 else if (SCM_SUBCLASSP (type
, scm_class_protected
))
773 if (SCM_SUBCLASSP (type
, scm_class_opaque
))
775 else if (SCM_SUBCLASSP (type
, scm_class_read_only
))
777 else if (SCM_SUBCLASSP (type
, scm_class_hidden
))
789 index
= SCM_GNS_INDEX (SCM_CAR (getters_n_setters
));
790 if (index
!= (i
>> 1))
792 size
= SCM_GNS_SIZE (SCM_CAR (getters_n_setters
));
800 slots
= SCM_CDR (slots
);
801 getters_n_setters
= SCM_CDR (getters_n_setters
);
803 if (!scm_is_null (slots
))
806 SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL
);
808 SCM_SET_VTABLE_LAYOUT (class, scm_string_to_symbol (layout
));
809 return SCM_UNSPECIFIED
;
813 static void prep_hashsets (SCM
);
815 SCM_DEFINE (scm_sys_inherit_magic_x
, "%inherit-magic!", 2, 0, 0,
816 (SCM
class, SCM dsupers
),
818 #define FUNC_NAME s_scm_sys_inherit_magic_x
820 SCM_VALIDATE_INSTANCE (1, class);
821 scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class);
822 SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID
);
824 prep_hashsets (class);
826 return SCM_UNSPECIFIED
;
831 prep_hashsets (SCM
class)
835 for (i
= 0; i
< 8; ++i
)
836 SCM_SET_HASHSET (class, i
, scm_c_uniform32 (goops_rstate
));
839 /******************************************************************************/
842 scm_basic_basic_make_class (SCM
class, SCM name
, SCM dsupers
, SCM dslots
)
844 SCM z
, cpl
, slots
, nfields
, g_n_s
;
846 /* Allocate one instance */
847 z
= scm_make_struct (class, SCM_INUM0
, SCM_EOL
);
849 /* Initialize its slots */
850 SCM_SET_SLOT (z
, scm_si_direct_supers
, dsupers
);
851 cpl
= compute_cpl (z
);
852 slots
= build_slots_list (maplist (dslots
), cpl
);
853 nfields
= scm_from_int (scm_ilength (slots
));
854 g_n_s
= compute_getters_n_setters (slots
);
856 SCM_SET_SLOT (z
, scm_vtable_index_name
, name
);
857 SCM_SET_SLOT (z
, scm_si_direct_slots
, dslots
);
858 SCM_SET_SLOT (z
, scm_si_direct_subclasses
, SCM_EOL
);
859 SCM_SET_SLOT (z
, scm_si_direct_methods
, SCM_EOL
);
860 SCM_SET_SLOT (z
, scm_si_cpl
, cpl
);
861 SCM_SET_SLOT (z
, scm_si_slots
, slots
);
862 SCM_SET_SLOT (z
, scm_si_nfields
, nfields
);
863 SCM_SET_SLOT (z
, scm_si_getters_n_setters
, g_n_s
);
864 SCM_SET_SLOT (z
, scm_si_redefined
, SCM_BOOL_F
);
866 /* Add this class in the direct-subclasses slot of dsupers */
869 for (tmp
= dsupers
; !scm_is_null (tmp
); tmp
= SCM_CDR (tmp
))
870 SCM_SET_SLOT (SCM_CAR (tmp
), scm_si_direct_subclasses
,
871 scm_cons (z
, SCM_SLOT (SCM_CAR (tmp
),
872 scm_si_direct_subclasses
)));
879 scm_basic_make_class (SCM
class, SCM name
, SCM dsupers
, SCM dslots
)
881 SCM z
= scm_basic_basic_make_class (class, name
, dsupers
, dslots
);
882 scm_sys_prep_layout_x (z
);
883 scm_sys_inherit_magic_x (z
, dsupers
);
887 /******************************************************************************/
889 SCM_SYMBOL (sym_layout
, "layout");
890 SCM_SYMBOL (sym_flags
, "flags");
891 SCM_SYMBOL (sym_self
, "%self");
892 SCM_SYMBOL (sym_instance_finalizer
, "instance-finalizer");
893 SCM_SYMBOL (sym_reserved_0
, "%reserved-0");
894 SCM_SYMBOL (sym_reserved_1
, "%reserved-1");
895 SCM_SYMBOL (sym_print
, "print");
896 SCM_SYMBOL (sym_procedure
, "procedure");
897 SCM_SYMBOL (sym_setter
, "setter");
898 SCM_SYMBOL (sym_redefined
, "redefined");
899 SCM_SYMBOL (sym_h0
, "h0");
900 SCM_SYMBOL (sym_h1
, "h1");
901 SCM_SYMBOL (sym_h2
, "h2");
902 SCM_SYMBOL (sym_h3
, "h3");
903 SCM_SYMBOL (sym_h4
, "h4");
904 SCM_SYMBOL (sym_h5
, "h5");
905 SCM_SYMBOL (sym_h6
, "h6");
906 SCM_SYMBOL (sym_h7
, "h7");
907 SCM_SYMBOL (sym_name
, "name");
908 SCM_SYMBOL (sym_direct_supers
, "direct-supers");
909 SCM_SYMBOL (sym_direct_slots
, "direct-slots");
910 SCM_SYMBOL (sym_direct_subclasses
, "direct-subclasses");
911 SCM_SYMBOL (sym_direct_methods
, "direct-methods");
912 SCM_SYMBOL (sym_cpl
, "cpl");
913 SCM_SYMBOL (sym_default_slot_definition_class
, "default-slot-definition-class");
914 SCM_SYMBOL (sym_slots
, "slots");
915 SCM_SYMBOL (sym_getters_n_setters
, "getters-n-setters");
916 SCM_SYMBOL (sym_nfields
, "nfields");
920 build_class_class_slots (void)
922 /* has to be kept in sync with SCM_VTABLE_BASE_LAYOUT and
923 SCM_CLASS_CLASS_LAYOUT */
925 scm_list_3 (sym_layout
, k_class
, scm_class_protected_read_only
),
926 scm_list_3 (sym_flags
, k_class
, scm_class_hidden
),
927 scm_list_3 (sym_self
, k_class
, scm_class_self
),
928 scm_list_3 (sym_instance_finalizer
, k_class
, scm_class_hidden
),
929 scm_list_1 (sym_print
),
930 scm_list_3 (sym_name
, k_class
, scm_class_protected_hidden
),
931 scm_list_3 (sym_reserved_0
, k_class
, scm_class_hidden
),
932 scm_list_3 (sym_reserved_1
, k_class
, scm_class_hidden
),
933 scm_list_1 (sym_redefined
),
934 scm_list_3 (sym_h0
, k_class
, scm_class_int
),
935 scm_list_3 (sym_h1
, k_class
, scm_class_int
),
936 scm_list_3 (sym_h2
, k_class
, scm_class_int
),
937 scm_list_3 (sym_h3
, k_class
, scm_class_int
),
938 scm_list_3 (sym_h4
, k_class
, scm_class_int
),
939 scm_list_3 (sym_h5
, k_class
, scm_class_int
),
940 scm_list_3 (sym_h6
, k_class
, scm_class_int
),
941 scm_list_3 (sym_h7
, k_class
, scm_class_int
),
942 scm_list_1 (sym_direct_supers
),
943 scm_list_1 (sym_direct_slots
),
944 scm_list_1 (sym_direct_subclasses
),
945 scm_list_1 (sym_direct_methods
),
946 scm_list_1 (sym_cpl
),
947 scm_list_1 (sym_default_slot_definition_class
),
948 scm_list_1 (sym_slots
),
949 scm_list_1 (sym_getters_n_setters
),
950 scm_list_1 (sym_nfields
),
955 create_basic_classes (void)
957 /* SCM slots_of_class = build_class_class_slots (); */
960 SCM cs
= scm_from_locale_string (SCM_CLASS_CLASS_LAYOUT
);
961 SCM name
= scm_from_latin1_symbol ("<class>");
962 scm_class_class
= scm_i_make_vtable_vtable (cs
);
963 SCM_SET_CLASS_FLAGS (scm_class_class
, (SCM_CLASSF_GOOPS_OR_VALID
964 | SCM_CLASSF_METACLASS
));
966 SCM_SET_SLOT (scm_class_class
, scm_vtable_index_name
, name
);
967 SCM_SET_SLOT (scm_class_class
, scm_si_direct_supers
, SCM_EOL
); /* will be changed */
968 /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */
969 SCM_SET_SLOT (scm_class_class
, scm_si_direct_subclasses
, SCM_EOL
);
970 SCM_SET_SLOT (scm_class_class
, scm_si_direct_methods
, SCM_EOL
);
971 SCM_SET_SLOT (scm_class_class
, scm_si_cpl
, SCM_EOL
); /* will be changed */
972 /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */
973 SCM_SET_SLOT (scm_class_class
, scm_si_nfields
, scm_from_int (SCM_N_CLASS_SLOTS
));
974 /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters,
975 compute_getters_n_setters (slots_of_class)); */
976 SCM_SET_SLOT (scm_class_class
, scm_si_redefined
, SCM_BOOL_F
);
978 prep_hashsets (scm_class_class
);
980 scm_module_define (scm_module_goops
, name
, scm_class_class
);
983 name
= scm_from_latin1_symbol ("<top>");
984 scm_class_top
= scm_basic_make_class (scm_class_class
, name
,
987 scm_module_define (scm_module_goops
, name
, scm_class_top
);
990 name
= scm_from_latin1_symbol ("<object>");
991 scm_class_object
= scm_basic_make_class (scm_class_class
, name
,
992 scm_list_1 (scm_class_top
), SCM_EOL
);
994 scm_module_define (scm_module_goops
, name
, scm_class_object
);
996 /* <top> <object> and <class> were partially initialized. Correct them here */
997 SCM_SET_SLOT (scm_class_object
, scm_si_direct_subclasses
, scm_list_1 (scm_class_class
));
999 SCM_SET_SLOT (scm_class_class
, scm_si_direct_supers
, scm_list_1 (scm_class_object
));
1000 SCM_SET_SLOT (scm_class_class
, scm_si_cpl
, scm_list_3 (scm_class_class
, scm_class_object
, scm_class_top
));
1003 /******************************************************************************/
1005 SCM_DEFINE (scm_instance_p
, "instance?", 1, 0, 0,
1007 "Return @code{#t} if @var{obj} is an instance.")
1008 #define FUNC_NAME s_scm_instance_p
1010 return scm_from_bool (SCM_INSTANCEP (obj
));
1015 /******************************************************************************
1017 * Meta object accessors
1019 ******************************************************************************/
1020 SCM_DEFINE (scm_class_name
, "class-name", 1, 0, 0,
1022 "Return the class name of @var{obj}.")
1023 #define FUNC_NAME s_scm_class_name
1025 SCM_VALIDATE_CLASS (1, obj
);
1026 return scm_slot_ref (obj
, sym_name
);
1030 SCM_DEFINE (scm_class_direct_supers
, "class-direct-supers", 1, 0, 0,
1032 "Return the direct superclasses of the class @var{obj}.")
1033 #define FUNC_NAME s_scm_class_direct_supers
1035 SCM_VALIDATE_CLASS (1, obj
);
1036 return scm_slot_ref (obj
, sym_direct_supers
);
1040 SCM_DEFINE (scm_class_direct_slots
, "class-direct-slots", 1, 0, 0,
1042 "Return the direct slots of the class @var{obj}.")
1043 #define FUNC_NAME s_scm_class_direct_slots
1045 SCM_VALIDATE_CLASS (1, obj
);
1046 return scm_slot_ref (obj
, sym_direct_slots
);
1050 SCM_DEFINE (scm_class_direct_subclasses
, "class-direct-subclasses", 1, 0, 0,
1052 "Return the direct subclasses of the class @var{obj}.")
1053 #define FUNC_NAME s_scm_class_direct_subclasses
1055 SCM_VALIDATE_CLASS (1, obj
);
1056 return scm_slot_ref(obj
, sym_direct_subclasses
);
1060 SCM_DEFINE (scm_class_direct_methods
, "class-direct-methods", 1, 0, 0,
1062 "Return the direct methods of the class @var{obj}")
1063 #define FUNC_NAME s_scm_class_direct_methods
1065 SCM_VALIDATE_CLASS (1, obj
);
1066 return scm_slot_ref (obj
, sym_direct_methods
);
1070 SCM_DEFINE (scm_class_precedence_list
, "class-precedence-list", 1, 0, 0,
1072 "Return the class precedence list of the class @var{obj}.")
1073 #define FUNC_NAME s_scm_class_precedence_list
1075 SCM_VALIDATE_CLASS (1, obj
);
1076 return scm_slot_ref (obj
, sym_cpl
);
1080 SCM_DEFINE (scm_class_slots
, "class-slots", 1, 0, 0,
1082 "Return the slot list of the class @var{obj}.")
1083 #define FUNC_NAME s_scm_class_slots
1085 SCM_VALIDATE_CLASS (1, obj
);
1086 return scm_slot_ref (obj
, sym_slots
);
1090 SCM_DEFINE (scm_generic_function_name
, "generic-function-name", 1, 0, 0,
1092 "Return the name of the generic function @var{obj}.")
1093 #define FUNC_NAME s_scm_generic_function_name
1095 SCM_VALIDATE_GENERIC (1, obj
);
1096 return scm_procedure_property (obj
, scm_sym_name
);
1100 SCM_SYMBOL (sym_methods
, "methods");
1101 SCM_SYMBOL (sym_extended_by
, "extended-by");
1102 SCM_SYMBOL (sym_extends
, "extends");
1105 SCM
fold_downward_gf_methods (SCM method_lists
, SCM gf
)
1107 SCM gfs
= scm_slot_ref (gf
, sym_extended_by
);
1108 method_lists
= scm_cons (scm_slot_ref (gf
, sym_methods
), method_lists
);
1109 while (!scm_is_null (gfs
))
1111 method_lists
= fold_downward_gf_methods (method_lists
, SCM_CAR (gfs
));
1112 gfs
= SCM_CDR (gfs
);
1114 return method_lists
;
1118 SCM
fold_upward_gf_methods (SCM method_lists
, SCM gf
)
1120 if (SCM_IS_A_P (gf
, scm_class_extended_generic
))
1122 SCM gfs
= scm_slot_ref (gf
, sym_extends
);
1123 while (!scm_is_null (gfs
))
1125 SCM methods
= scm_slot_ref (SCM_CAR (gfs
), sym_methods
);
1126 method_lists
= fold_upward_gf_methods (scm_cons (methods
,
1129 gfs
= SCM_CDR (gfs
);
1132 return method_lists
;
1135 SCM_DEFINE (scm_generic_function_methods
, "generic-function-methods", 1, 0, 0,
1137 "Return the methods of the generic function @var{obj}.")
1138 #define FUNC_NAME s_scm_generic_function_methods
1141 SCM_VALIDATE_GENERIC (1, obj
);
1142 methods
= fold_upward_gf_methods (SCM_EOL
, obj
);
1143 methods
= fold_downward_gf_methods (methods
, obj
);
1144 return scm_append (methods
);
1148 SCM_DEFINE (scm_method_generic_function
, "method-generic-function", 1, 0, 0,
1150 "Return the generic function for the method @var{obj}.")
1151 #define FUNC_NAME s_scm_method_generic_function
1153 SCM_VALIDATE_METHOD (1, obj
);
1154 return scm_slot_ref (obj
, scm_from_latin1_symbol ("generic-function"));
1158 SCM_DEFINE (scm_method_specializers
, "method-specializers", 1, 0, 0,
1160 "Return specializers of the method @var{obj}.")
1161 #define FUNC_NAME s_scm_method_specializers
1163 SCM_VALIDATE_METHOD (1, obj
);
1164 return scm_slot_ref (obj
, scm_from_latin1_symbol ("specializers"));
1168 SCM_DEFINE (scm_method_procedure
, "method-procedure", 1, 0, 0,
1170 "Return the procedure of the method @var{obj}.")
1171 #define FUNC_NAME s_scm_method_procedure
1173 SCM_VALIDATE_METHOD (1, obj
);
1174 return scm_slot_ref (obj
, sym_procedure
);
1178 /******************************************************************************
1180 * S l o t a c c e s s
1182 ******************************************************************************/
1184 SCM_DEFINE (scm_make_unbound
, "make-unbound", 0, 0, 0,
1186 "Return the unbound value.")
1187 #define FUNC_NAME s_scm_make_unbound
1189 return SCM_GOOPS_UNBOUND
;
1193 SCM_DEFINE (scm_unbound_p
, "unbound?", 1, 0, 0,
1195 "Return @code{#t} if @var{obj} is unbound.")
1196 #define FUNC_NAME s_scm_unbound_p
1198 return SCM_GOOPS_UNBOUNDP (obj
) ? SCM_BOOL_T
: SCM_BOOL_F
;
1202 SCM_DEFINE (scm_assert_bound
, "assert-bound", 2, 0, 0,
1203 (SCM value
, SCM obj
),
1204 "Return @var{value} if it is bound, and invoke the\n"
1205 "@var{slot-unbound} method of @var{obj} if it is not.")
1206 #define FUNC_NAME s_scm_assert_bound
1208 if (SCM_GOOPS_UNBOUNDP (value
))
1209 return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound
), obj
);
1214 SCM_DEFINE (scm_at_assert_bound_ref
, "@assert-bound-ref", 2, 0, 0,
1215 (SCM obj
, SCM index
),
1216 "Like @code{assert-bound}, but use @var{index} for accessing\n"
1217 "the value from @var{obj}.")
1218 #define FUNC_NAME s_scm_at_assert_bound_ref
1220 SCM value
= SCM_SLOT (obj
, scm_to_int (index
));
1221 if (SCM_GOOPS_UNBOUNDP (value
))
1222 return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound
), obj
);
1227 SCM_DEFINE (scm_sys_fast_slot_ref
, "%fast-slot-ref", 2, 0, 0,
1228 (SCM obj
, SCM index
),
1229 "Return the slot value with index @var{index} from @var{obj}.")
1230 #define FUNC_NAME s_scm_sys_fast_slot_ref
1234 SCM_VALIDATE_INSTANCE (1, obj
);
1235 i
= scm_to_unsigned_integer (index
, 0,
1236 SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj
),
1239 return SCM_SLOT (obj
, i
);
1243 SCM_DEFINE (scm_sys_fast_slot_set_x
, "%fast-slot-set!", 3, 0, 0,
1244 (SCM obj
, SCM index
, SCM value
),
1245 "Set the slot with index @var{index} in @var{obj} to\n"
1247 #define FUNC_NAME s_scm_sys_fast_slot_set_x
1251 SCM_VALIDATE_INSTANCE (1, obj
);
1252 i
= scm_to_unsigned_integer (index
, 0,
1253 SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj
),
1257 SCM_SET_SLOT (obj
, i
, value
);
1259 return SCM_UNSPECIFIED
;
1267 /* In the future, this function will return the effective slot
1268 * definition associated with SLOT_NAME. Now it just returns some of
1269 * the information which will be stored in the effective slot
1274 slot_definition_using_name (SCM
class, SCM slot_name
)
1276 register SCM slots
= SCM_SLOT (class, scm_si_getters_n_setters
);
1277 for (; !scm_is_null (slots
); slots
= SCM_CDR (slots
))
1278 if (scm_is_eq (SCM_CAAR (slots
), slot_name
))
1279 return SCM_CAR (slots
);
1284 get_slot_value (SCM
class SCM_UNUSED
, SCM obj
, SCM slotdef
)
1285 #define FUNC_NAME "%get-slot-value"
1287 SCM access
= SCM_CDDR (slotdef
);
1289 * - access is an integer (the offset of this slot in the slots vector)
1290 * - otherwise (car access) is the getter function to apply
1292 * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so
1293 * we can just assume fixnums here.
1295 if (SCM_I_INUMP (access
))
1296 /* Don't poke at the slots directly, because scm_struct_ref handles the
1297 access bits for us. */
1298 return scm_struct_ref (obj
, access
);
1300 return scm_call_1 (SCM_CAR (access
), obj
);
1305 get_slot_value_using_name (SCM
class, SCM obj
, SCM slot_name
)
1307 SCM slotdef
= slot_definition_using_name (class, slot_name
);
1308 if (scm_is_true (slotdef
))
1309 return get_slot_value (class, obj
, slotdef
);
1311 return scm_call_3 (SCM_VARIABLE_REF (var_slot_missing
), class, obj
, slot_name
);
1315 set_slot_value (SCM
class SCM_UNUSED
, SCM obj
, SCM slotdef
, SCM value
)
1316 #define FUNC_NAME "%set-slot-value"
1318 SCM access
= SCM_CDDR (slotdef
);
1320 * - access is an integer (the offset of this slot in the slots vector)
1321 * - otherwise (cadr access) is the setter function to apply
1323 * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so
1324 * we can just assume fixnums here.
1326 if (SCM_I_INUMP (access
))
1327 /* obey permissions bits via going through struct-set! */
1328 scm_struct_set_x (obj
, access
, value
);
1330 /* ((cadr l) obj value) */
1331 scm_call_2 (SCM_CADR (access
), obj
, value
);
1332 return SCM_UNSPECIFIED
;
1337 set_slot_value_using_name (SCM
class, SCM obj
, SCM slot_name
, SCM value
)
1339 SCM slotdef
= slot_definition_using_name (class, slot_name
);
1340 if (scm_is_true (slotdef
))
1341 return set_slot_value (class, obj
, slotdef
, value
);
1343 return scm_call_4 (SCM_VARIABLE_REF (var_slot_missing
), class, obj
, slot_name
, value
);
1347 test_slot_existence (SCM
class SCM_UNUSED
, SCM obj
, SCM slot_name
)
1351 for (l
= SCM_ACCESSORS_OF (obj
); !scm_is_null (l
); l
= SCM_CDR (l
))
1352 if (scm_is_eq (SCM_CAAR (l
), slot_name
))
1358 /* ======================================== */
1360 SCM_DEFINE (scm_slot_ref_using_class
, "slot-ref-using-class", 3, 0, 0,
1361 (SCM
class, SCM obj
, SCM slot_name
),
1363 #define FUNC_NAME s_scm_slot_ref_using_class
1367 SCM_VALIDATE_CLASS (1, class);
1368 SCM_VALIDATE_INSTANCE (2, obj
);
1369 SCM_VALIDATE_SYMBOL (3, slot_name
);
1371 res
= get_slot_value_using_name (class, obj
, slot_name
);
1372 if (SCM_GOOPS_UNBOUNDP (res
))
1373 return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound
), class, obj
, slot_name
);
1379 SCM_DEFINE (scm_slot_set_using_class_x
, "slot-set-using-class!", 4, 0, 0,
1380 (SCM
class, SCM obj
, SCM slot_name
, SCM value
),
1382 #define FUNC_NAME s_scm_slot_set_using_class_x
1384 SCM_VALIDATE_CLASS (1, class);
1385 SCM_VALIDATE_INSTANCE (2, obj
);
1386 SCM_VALIDATE_SYMBOL (3, slot_name
);
1388 return set_slot_value_using_name (class, obj
, slot_name
, value
);
1393 SCM_DEFINE (scm_slot_bound_using_class_p
, "slot-bound-using-class?", 3, 0, 0,
1394 (SCM
class, SCM obj
, SCM slot_name
),
1396 #define FUNC_NAME s_scm_slot_bound_using_class_p
1398 SCM_VALIDATE_CLASS (1, class);
1399 SCM_VALIDATE_INSTANCE (2, obj
);
1400 SCM_VALIDATE_SYMBOL (3, slot_name
);
1402 return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj
, slot_name
))
1408 SCM_DEFINE (scm_slot_exists_using_class_p
, "slot-exists-using-class?", 3, 0, 0,
1409 (SCM
class, SCM obj
, SCM slot_name
),
1411 #define FUNC_NAME s_scm_slot_exists_using_class_p
1413 SCM_VALIDATE_CLASS (1, class);
1414 SCM_VALIDATE_INSTANCE (2, obj
);
1415 SCM_VALIDATE_SYMBOL (3, slot_name
);
1416 return test_slot_existence (class, obj
, slot_name
);
1421 /* ======================================== */
1423 SCM_DEFINE (scm_slot_ref
, "slot-ref", 2, 0, 0,
1424 (SCM obj
, SCM slot_name
),
1425 "Return the value from @var{obj}'s slot with the name\n"
1427 #define FUNC_NAME s_scm_slot_ref
1431 SCM_VALIDATE_INSTANCE (1, obj
);
1432 TEST_CHANGE_CLASS (obj
, class);
1434 res
= get_slot_value_using_name (class, obj
, slot_name
);
1435 if (SCM_GOOPS_UNBOUNDP (res
))
1436 return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound
), class, obj
, slot_name
);
1441 SCM_DEFINE (scm_slot_set_x
, "slot-set!", 3, 0, 0,
1442 (SCM obj
, SCM slot_name
, SCM value
),
1443 "Set the slot named @var{slot_name} of @var{obj} to @var{value}.")
1444 #define FUNC_NAME s_scm_slot_set_x
1448 SCM_VALIDATE_INSTANCE (1, obj
);
1449 TEST_CHANGE_CLASS(obj
, class);
1451 return set_slot_value_using_name (class, obj
, slot_name
, value
);
1455 const char *scm_s_slot_set_x
= s_scm_slot_set_x
;
1457 SCM_DEFINE (scm_slot_bound_p
, "slot-bound?", 2, 0, 0,
1458 (SCM obj
, SCM slot_name
),
1459 "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n"
1461 #define FUNC_NAME s_scm_slot_bound_p
1465 SCM_VALIDATE_INSTANCE (1, obj
);
1466 TEST_CHANGE_CLASS(obj
, class);
1468 return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class,
1476 SCM_DEFINE (scm_slot_exists_p
, "slot-exists?", 2, 0, 0,
1477 (SCM obj
, SCM slot_name
),
1478 "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.")
1479 #define FUNC_NAME s_scm_slot_exists_p
1483 SCM_VALIDATE_INSTANCE (1, obj
);
1484 SCM_VALIDATE_SYMBOL (2, slot_name
);
1485 TEST_CHANGE_CLASS (obj
, class);
1487 return test_slot_existence (class, obj
, slot_name
);
1492 /******************************************************************************
1494 * %allocate-instance (the low level instance allocation primitive)
1496 ******************************************************************************/
1498 static void clear_method_cache (SCM
);
1500 SCM_DEFINE (scm_sys_allocate_instance
, "%allocate-instance", 2, 0, 0,
1501 (SCM
class, SCM initargs
),
1502 "Create a new instance of class @var{class} and initialize it\n"
1503 "from the arguments @var{initargs}.")
1504 #define FUNC_NAME s_scm_sys_allocate_instance
1507 scm_t_signed_bits n
, i
;
1510 SCM_VALIDATE_CLASS (1, class);
1512 /* FIXME: duplicates some of scm_make_struct. */
1514 n
= SCM_I_INUM (SCM_SLOT (class, scm_si_nfields
));
1515 obj
= scm_i_alloc_struct (SCM_STRUCT_DATA (class), n
);
1517 layout
= SCM_VTABLE_LAYOUT (class);
1519 /* Set all SCM-holding slots to unbound */
1520 for (i
= 0; i
< n
; i
++)
1522 scm_t_wchar c
= scm_i_symbol_ref (layout
, i
*2);
1524 SCM_STRUCT_DATA (obj
)[i
] = SCM_UNPACK (SCM_GOOPS_UNBOUND
);
1526 SCM_STRUCT_DATA (obj
)[i
] = SCM_UNPACK (obj
);
1528 SCM_STRUCT_DATA (obj
)[i
] = 0;
1531 if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC
)
1532 clear_method_cache (obj
);
1538 SCM_DEFINE (scm_sys_set_object_setter_x
, "%set-object-setter!", 2, 0, 0,
1539 (SCM obj
, SCM setter
),
1541 #define FUNC_NAME s_scm_sys_set_object_setter_x
1543 SCM_ASSERT (SCM_STRUCTP (obj
)
1544 && (SCM_OBJ_CLASS_FLAGS (obj
) & SCM_CLASSF_PURE_GENERIC
),
1548 SCM_SET_GENERIC_SETTER (obj
, setter
);
1549 return SCM_UNSPECIFIED
;
1553 /******************************************************************************
1555 * %modify-instance (used by change-class to modify in place)
1557 ******************************************************************************/
1559 SCM_DEFINE (scm_sys_modify_instance
, "%modify-instance", 2, 0, 0,
1562 #define FUNC_NAME s_scm_sys_modify_instance
1564 SCM_VALIDATE_INSTANCE (1, old
);
1565 SCM_VALIDATE_INSTANCE (2, new);
1567 /* Exchange the data contained in old and new. We exchange rather than
1568 * scratch the old value with new to be correct with GC.
1569 * See "Class redefinition protocol above".
1571 SCM_CRITICAL_SECTION_START
;
1573 scm_t_bits word0
, word1
;
1574 word0
= SCM_CELL_WORD_0 (old
);
1575 word1
= SCM_CELL_WORD_1 (old
);
1576 SCM_SET_CELL_WORD_0 (old
, SCM_CELL_WORD_0 (new));
1577 SCM_SET_CELL_WORD_1 (old
, SCM_CELL_WORD_1 (new));
1578 SCM_SET_CELL_WORD_0 (new, word0
);
1579 SCM_SET_CELL_WORD_1 (new, word1
);
1581 SCM_CRITICAL_SECTION_END
;
1582 return SCM_UNSPECIFIED
;
1586 SCM_DEFINE (scm_sys_modify_class
, "%modify-class", 2, 0, 0,
1589 #define FUNC_NAME s_scm_sys_modify_class
1591 SCM_VALIDATE_CLASS (1, old
);
1592 SCM_VALIDATE_CLASS (2, new);
1594 SCM_CRITICAL_SECTION_START
;
1596 scm_t_bits word0
, word1
;
1597 word0
= SCM_CELL_WORD_0 (old
);
1598 word1
= SCM_CELL_WORD_1 (old
);
1599 SCM_SET_CELL_WORD_0 (old
, SCM_CELL_WORD_0 (new));
1600 SCM_SET_CELL_WORD_1 (old
, SCM_CELL_WORD_1 (new));
1601 SCM_STRUCT_DATA (old
)[scm_vtable_index_self
] = SCM_UNPACK (old
);
1602 SCM_SET_CELL_WORD_0 (new, word0
);
1603 SCM_SET_CELL_WORD_1 (new, word1
);
1604 SCM_STRUCT_DATA (new)[scm_vtable_index_self
] = SCM_UNPACK (new);
1606 SCM_CRITICAL_SECTION_END
;
1607 return SCM_UNSPECIFIED
;
1611 SCM_DEFINE (scm_sys_invalidate_class
, "%invalidate-class", 1, 0, 0,
1614 #define FUNC_NAME s_scm_sys_invalidate_class
1616 SCM_VALIDATE_CLASS (1, class);
1617 SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID
);
1618 return SCM_UNSPECIFIED
;
1622 /* When instances change class, they finally get a new body, but
1623 * before that, they go through purgatory in hell. Odd as it may
1624 * seem, this data structure saves us from eternal suffering in
1625 * infinite recursions.
1628 static scm_t_bits
**hell
;
1629 static long n_hell
= 1; /* one place for the evil one himself */
1630 static long hell_size
= 4;
1631 static SCM hell_mutex
;
1637 for (i
= 1; i
< n_hell
; ++i
)
1638 if (SCM_STRUCT_DATA (o
) == hell
[i
])
1644 go_to_hell (void *o
)
1647 scm_lock_mutex (hell_mutex
);
1648 if (n_hell
>= hell_size
)
1651 hell
= scm_realloc (hell
, hell_size
* sizeof(*hell
));
1653 hell
[n_hell
++] = SCM_STRUCT_DATA (obj
);
1654 scm_unlock_mutex (hell_mutex
);
1658 go_to_heaven (void *o
)
1661 scm_lock_mutex (hell_mutex
);
1662 hell
[burnin (obj
)] = hell
[--n_hell
];
1663 scm_unlock_mutex (hell_mutex
);
1667 SCM_SYMBOL (scm_sym_change_class
, "change-class");
1670 purgatory (SCM obj
, SCM new_class
)
1672 return scm_call_2 (SCM_VARIABLE_REF (var_change_class
), obj
, new_class
);
1675 /* This function calls the generic function change-class for all
1676 * instances which aren't currently undergoing class change.
1680 scm_change_object_class (SCM obj
, SCM old_class SCM_UNUSED
, SCM new_class
)
1684 scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE
);
1685 scm_dynwind_rewind_handler (go_to_hell
, &obj
, SCM_F_WIND_EXPLICITLY
);
1686 scm_dynwind_unwind_handler (go_to_heaven
, &obj
, SCM_F_WIND_EXPLICITLY
);
1687 purgatory (obj
, new_class
);
1692 /******************************************************************************
1698 * GGG E N E R I C F U N C T I O N S
1700 * This implementation provides
1701 * - generic functions (with class specializers)
1704 * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf
1706 ******************************************************************************/
1708 SCM_KEYWORD (k_name
, "name");
1710 SCM_GLOBAL_SYMBOL (scm_sym_args
, "args");
1712 SCM_SYMBOL (sym_delayed_compile
, "delayed-compile");
1714 static SCM delayed_compile_var
;
1717 init_delayed_compile_var (void)
1720 = scm_c_private_lookup ("oop goops dispatch", "delayed-compile");
1724 make_dispatch_procedure (SCM gf
)
1726 static scm_i_pthread_once_t once
= SCM_I_PTHREAD_ONCE_INIT
;
1727 scm_i_pthread_once (&once
, init_delayed_compile_var
);
1729 return scm_call_1 (scm_variable_ref (delayed_compile_var
), gf
);
1733 clear_method_cache (SCM gf
)
1735 SCM_SET_GENERIC_DISPATCH_PROCEDURE (gf
, make_dispatch_procedure (gf
));
1736 SCM_CLEAR_GENERIC_EFFECTIVE_METHODS (gf
);
1739 SCM_DEFINE (scm_sys_invalidate_method_cache_x
, "%invalidate-method-cache!", 1, 0, 0,
1742 #define FUNC_NAME s_scm_sys_invalidate_method_cache_x
1744 SCM_ASSERT (SCM_PUREGENERICP (gf
), gf
, SCM_ARG1
, FUNC_NAME
);
1745 clear_method_cache (gf
);
1746 return SCM_UNSPECIFIED
;
1750 SCM_DEFINE (scm_generic_capability_p
, "generic-capability?", 1, 0, 0,
1753 #define FUNC_NAME s_scm_generic_capability_p
1755 SCM_ASSERT (scm_is_true (scm_procedure_p (proc
)),
1756 proc
, SCM_ARG1
, FUNC_NAME
);
1757 return (SCM_PRIMITIVE_GENERIC_P (proc
) ? SCM_BOOL_T
: SCM_BOOL_F
);
1761 SCM_DEFINE (scm_enable_primitive_generic_x
, "enable-primitive-generic!", 0, 0, 1,
1764 #define FUNC_NAME s_scm_enable_primitive_generic_x
1766 SCM_VALIDATE_REST_ARGUMENT (subrs
);
1767 while (!scm_is_null (subrs
))
1769 SCM subr
= SCM_CAR (subrs
);
1770 SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr
), subr
, SCM_ARGn
, FUNC_NAME
);
1771 SCM_SET_SUBR_GENERIC (subr
,
1772 scm_make (scm_list_3 (scm_class_generic
,
1774 SCM_SUBR_NAME (subr
))));
1775 subrs
= SCM_CDR (subrs
);
1777 return SCM_UNSPECIFIED
;
1781 SCM_DEFINE (scm_set_primitive_generic_x
, "set-primitive-generic!", 2, 0, 0,
1782 (SCM subr
, SCM generic
),
1784 #define FUNC_NAME s_scm_set_primitive_generic_x
1786 SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr
), subr
, SCM_ARG1
, FUNC_NAME
);
1787 SCM_ASSERT (SCM_PUREGENERICP (generic
), generic
, SCM_ARG2
, FUNC_NAME
);
1788 SCM_SET_SUBR_GENERIC (subr
, generic
);
1789 return SCM_UNSPECIFIED
;
1793 SCM_DEFINE (scm_primitive_generic_generic
, "primitive-generic-generic", 1, 0, 0,
1796 #define FUNC_NAME s_scm_primitive_generic_generic
1798 if (SCM_PRIMITIVE_GENERIC_P (subr
))
1800 if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr
)))
1801 scm_enable_primitive_generic_x (scm_list_1 (subr
));
1802 return *SCM_SUBR_GENERIC (subr
);
1804 SCM_WRONG_TYPE_ARG (SCM_ARG1
, subr
);
1808 typedef struct t_extension
{
1809 struct t_extension
*next
;
1815 /* Hint for `scm_gc_malloc ()' et al. when allocating `t_extension'
1817 static const char extension_gc_hint
[] = "GOOPS extension";
1819 static t_extension
*extensions
= 0;
1822 scm_c_extend_primitive_generic (SCM extended
, SCM extension
)
1827 if (!SCM_UNPACK (*SCM_SUBR_GENERIC (extended
)))
1828 scm_enable_primitive_generic_x (scm_list_1 (extended
));
1829 gf
= *SCM_SUBR_GENERIC (extended
);
1830 gext
= scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic
),
1832 SCM_SUBR_NAME (extension
));
1833 SCM_SET_SUBR_GENERIC (extension
, gext
);
1837 t_extension
*e
= scm_gc_malloc (sizeof (t_extension
),
1839 t_extension
**loc
= &extensions
;
1840 /* Make sure that extensions are placed before their own
1841 * extensions in the extensions list. O(N^2) algorithm, but
1842 * extensions of primitive generics are rare.
1844 while (*loc
&& !scm_is_eq (extension
, (*loc
)->extended
))
1845 loc
= &(*loc
)->next
;
1847 e
->extended
= extended
;
1848 e
->extension
= extension
;
1854 setup_extended_primitive_generics ()
1858 t_extension
*e
= extensions
;
1859 scm_c_extend_primitive_generic (e
->extended
, e
->extension
);
1860 extensions
= e
->next
;
1864 /* Dirk:FIXME:: In all of these scm_wta_dispatch_* routines it is
1865 * assumed that 'gf' is zero if uninitialized. It would be cleaner if
1866 * some valid SCM value like SCM_BOOL_F or SCM_UNDEFINED were chosen.
1870 scm_wta_dispatch_0 (SCM gf
, const char *subr
)
1872 if (!SCM_UNPACK (gf
))
1873 scm_error_num_args_subr (subr
);
1875 return scm_call_0 (gf
);
1879 scm_wta_dispatch_1 (SCM gf
, SCM a1
, int pos
, const char *subr
)
1881 if (!SCM_UNPACK (gf
))
1882 scm_wrong_type_arg (subr
, pos
, a1
);
1884 return scm_call_1 (gf
, a1
);
1888 scm_wta_dispatch_2 (SCM gf
, SCM a1
, SCM a2
, int pos
, const char *subr
)
1890 if (!SCM_UNPACK (gf
))
1891 scm_wrong_type_arg (subr
, pos
, (pos
== SCM_ARG1
) ? a1
: a2
);
1893 return scm_call_2 (gf
, a1
, a2
);
1897 scm_wta_dispatch_n (SCM gf
, SCM args
, int pos
, const char *subr
)
1899 if (!SCM_UNPACK (gf
))
1900 scm_wrong_type_arg (subr
, pos
, scm_list_ref (args
, scm_from_int (pos
)));
1902 return scm_apply_0 (gf
, args
);
1905 /******************************************************************************
1907 * Protocol for calling a generic fumction
1908 * This protocol is roughly equivalent to (parameter are a little bit different
1909 * for efficiency reasons):
1911 * + apply-generic (gf args)
1912 * + compute-applicable-methods (gf args ...)
1913 * + sort-applicable-methods (methods args)
1914 * + apply-methods (gf methods args)
1916 * apply-methods calls make-next-method to build the "continuation" of a a
1917 * method. Applying a next-method will call apply-next-method which in
1918 * turn will call apply again to call effectively the following method.
1920 ******************************************************************************/
1923 applicablep (SCM actual
, SCM formal
)
1925 /* We already know that the cpl is well formed. */
1926 return scm_is_true (scm_c_memq (formal
, SCM_SLOT (actual
, scm_si_cpl
)));
1930 more_specificp (SCM m1
, SCM m2
, SCM
const *targs
)
1932 register SCM s1
, s2
;
1936 * m1 and m2 can have != length (i.e. one can be one element longer than the
1937 * other when we have a dotted parameter list). For instance, with the call
1940 * (define-method M (a . l) ....)
1941 * (define-method M (a) ....)
1943 * we consider that the second method is more specific.
1945 * BTW, targs is an array of types. We don't need it's size since
1946 * we already know that m1 and m2 are applicable (no risk to go past
1947 * the end of this array).
1950 for (i
=0, s1
=SPEC_OF(m1
), s2
=SPEC_OF(m2
); ; i
++, s1
=SCM_CDR(s1
), s2
=SCM_CDR(s2
)) {
1951 if (scm_is_null(s1
)) return 1;
1952 if (scm_is_null(s2
)) return 0;
1953 if (!scm_is_eq (SCM_CAR(s1
), SCM_CAR(s2
))) {
1954 register SCM l
, cs1
= SCM_CAR(s1
), cs2
= SCM_CAR(s2
);
1956 for (l
= SCM_SLOT (targs
[i
], scm_si_cpl
); ; l
= SCM_CDR(l
)) {
1957 if (scm_is_eq (cs1
, SCM_CAR (l
)))
1959 if (scm_is_eq (cs2
, SCM_CAR (l
)))
1962 return 0;/* should not occur! */
1965 return 0; /* should not occur! */
1968 #define BUFFSIZE 32 /* big enough for most uses */
1971 scm_i_vector2list (SCM l
, long len
)
1974 SCM z
= scm_c_make_vector (len
, SCM_UNDEFINED
);
1976 for (j
= 0; j
< len
; j
++, l
= SCM_CDR (l
)) {
1977 SCM_SIMPLE_VECTOR_SET (z
, j
, SCM_CAR (l
));
1983 sort_applicable_methods (SCM method_list
, long size
, SCM
const *targs
)
1986 SCM
*v
, vector
= SCM_EOL
;
1987 SCM buffer
[BUFFSIZE
];
1988 SCM save
= method_list
;
1989 scm_t_array_handle handle
;
1991 /* For reasonably sized method_lists we can try to avoid all the
1992 * consing and reorder the list in place...
1993 * This idea is due to David McClain <Dave_McClain@msn.com>
1995 if (size
<= BUFFSIZE
)
1997 for (i
= 0; i
< size
; i
++)
1999 buffer
[i
] = SCM_CAR (method_list
);
2000 method_list
= SCM_CDR (method_list
);
2006 /* Too many elements in method_list to keep everything locally */
2007 vector
= scm_i_vector2list (save
, size
);
2008 v
= scm_vector_writable_elements (vector
, &handle
, NULL
, NULL
);
2011 /* Use a simple shell sort since it is generally faster than qsort on
2012 * small vectors (which is probably mostly the case when we have to
2013 * sort a list of applicable methods).
2015 for (incr
= size
/ 2; incr
; incr
/= 2)
2017 for (i
= incr
; i
< size
; i
++)
2019 for (j
= i
- incr
; j
>= 0; j
-= incr
)
2021 if (more_specificp (v
[j
], v
[j
+incr
], targs
))
2025 SCM tmp
= v
[j
+ incr
];
2033 if (size
<= BUFFSIZE
)
2035 /* We did it in locally, so restore the original list (reordered) in-place */
2036 for (i
= 0, method_list
= save
; i
< size
; i
++, v
++)
2038 SCM_SETCAR (method_list
, *v
);
2039 method_list
= SCM_CDR (method_list
);
2044 /* If we are here, that's that we did it the hard way... */
2045 scm_array_handle_release (&handle
);
2046 return scm_vector_to_list (vector
);
2050 scm_compute_applicable_methods (SCM gf
, SCM args
, long len
, int find_method_p
)
2054 SCM l
, fl
, applicable
= SCM_EOL
;
2056 SCM buffer
[BUFFSIZE
];
2060 scm_t_array_handle handle
;
2062 /* Build the list of arguments types */
2063 if (len
>= BUFFSIZE
)
2065 tmp
= scm_c_make_vector (len
, SCM_UNDEFINED
);
2066 types
= p
= scm_vector_writable_elements (tmp
, &handle
, NULL
, NULL
);
2069 note that we don't have to work to reset the generation
2070 count. TMP is a new vector anyway, and it is found
2077 for ( ; !scm_is_null (args
); args
= SCM_CDR (args
))
2078 *p
++ = scm_class_of (SCM_CAR (args
));
2080 /* Build a list of all applicable methods */
2081 for (l
= scm_generic_function_methods (gf
); !scm_is_null (l
); l
= SCM_CDR (l
))
2083 fl
= SPEC_OF (SCM_CAR (l
));
2084 for (i
= 0; ; i
++, fl
= SCM_CDR (fl
))
2086 if (SCM_INSTANCEP (fl
)
2087 /* We have a dotted argument list */
2088 || (i
>= len
&& scm_is_null (fl
)))
2089 { /* both list exhausted */
2090 applicable
= scm_cons (SCM_CAR (l
), applicable
);
2096 || !applicablep (types
[i
], SCM_CAR (fl
)))
2101 if (len
>= BUFFSIZE
)
2102 scm_array_handle_release (&handle
);
2108 scm_call_2 (SCM_VARIABLE_REF (var_no_applicable_method
), gf
, save
);
2109 /* if we are here, it's because no-applicable-method hasn't signaled an error */
2115 : sort_applicable_methods (applicable
, count
, types
));
2119 SCM_PROC (s_sys_compute_applicable_methods
, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods
);
2122 static const char s_sys_compute_applicable_methods
[] = "%compute-applicable-methods";
2125 scm_sys_compute_applicable_methods (SCM gf
, SCM args
)
2126 #define FUNC_NAME s_sys_compute_applicable_methods
2129 SCM_VALIDATE_GENERIC (1, gf
);
2130 n
= scm_ilength (args
);
2131 SCM_ASSERT (n
>= 0, args
, SCM_ARG2
, FUNC_NAME
);
2132 return scm_compute_applicable_methods (gf
, args
, n
, 1);
2136 SCM_SYMBOL (sym_compute_applicable_methods
, "compute-applicable-methods");
2137 SCM_VARIABLE_INIT (var_compute_applicable_methods
, "compute-applicable-methods",
2138 scm_c_define_gsubr (s_sys_compute_applicable_methods
, 2, 0, 0,
2139 scm_sys_compute_applicable_methods
));
2141 /******************************************************************************
2143 * A simple make (which will be redefined later in Scheme)
2144 * This version handles only creation of gf, methods and classes (no instances)
2146 * Since this code will disappear when Goops will be fully booted,
2147 * no precaution is taken to be efficient.
2149 ******************************************************************************/
2151 SCM_KEYWORD (k_setter
, "setter");
2152 SCM_KEYWORD (k_specializers
, "specializers");
2153 SCM_KEYWORD (k_procedure
, "procedure");
2154 SCM_KEYWORD (k_formals
, "formals");
2155 SCM_KEYWORD (k_body
, "body");
2156 SCM_KEYWORD (k_make_procedure
, "make-procedure");
2157 SCM_KEYWORD (k_dsupers
, "dsupers");
2158 SCM_KEYWORD (k_slots
, "slots");
2159 SCM_KEYWORD (k_gf
, "generic-function");
2161 SCM_DEFINE (scm_make
, "make", 0, 0, 1,
2163 "Make a new object. @var{args} must contain the class and\n"
2164 "all necessary initialization information.")
2165 #define FUNC_NAME s_scm_make
2168 long len
= scm_ilength (args
);
2170 if (len
<= 0 || (len
& 1) == 0)
2171 SCM_WRONG_NUM_ARGS ();
2173 class = SCM_CAR(args
);
2174 args
= SCM_CDR(args
);
2176 if (scm_is_eq (class, scm_class_generic
)
2177 || scm_is_eq (class, scm_class_accessor
))
2179 z
= scm_make_struct (class, SCM_INUM0
,
2180 scm_list_4 (SCM_BOOL_F
,
2184 scm_set_procedure_property_x (z
, scm_sym_name
,
2185 scm_get_keyword (k_name
,
2188 clear_method_cache (z
);
2189 if (scm_is_eq (class, scm_class_accessor
))
2191 SCM setter
= scm_get_keyword (k_setter
, args
, SCM_BOOL_F
);
2192 if (scm_is_true (setter
))
2193 scm_sys_set_object_setter_x (z
, setter
);
2198 z
= scm_sys_allocate_instance (class, args
);
2200 if (scm_is_eq (class, scm_class_method
)
2201 || scm_is_eq (class, scm_class_accessor_method
))
2203 SCM_SET_SLOT (z
, scm_si_generic_function
,
2204 scm_i_get_keyword (k_gf
,
2209 SCM_SET_SLOT (z
, scm_si_specializers
,
2210 scm_i_get_keyword (k_specializers
,
2215 SCM_SET_SLOT (z
, scm_si_procedure
,
2216 scm_i_get_keyword (k_procedure
,
2221 SCM_SET_SLOT (z
, scm_si_formals
,
2222 scm_i_get_keyword (k_formals
,
2227 SCM_SET_SLOT (z
, scm_si_body
,
2228 scm_i_get_keyword (k_body
,
2233 SCM_SET_SLOT (z
, scm_si_make_procedure
,
2234 scm_i_get_keyword (k_make_procedure
,
2242 /* In all the others case, make a new class .... No instance here */
2243 SCM_SET_SLOT (z
, scm_vtable_index_name
,
2244 scm_i_get_keyword (k_name
,
2247 scm_from_latin1_symbol ("???"),
2249 SCM_SET_SLOT (z
, scm_si_direct_supers
,
2250 scm_i_get_keyword (k_dsupers
,
2255 SCM_SET_SLOT (z
, scm_si_direct_slots
,
2256 scm_i_get_keyword (k_slots
,
2267 SCM_DEFINE (scm_find_method
, "find-method", 0, 0, 1,
2270 #define FUNC_NAME s_scm_find_method
2273 long len
= scm_ilength (l
);
2276 SCM_WRONG_NUM_ARGS ();
2278 gf
= SCM_CAR(l
); l
= SCM_CDR(l
);
2279 SCM_VALIDATE_GENERIC (1, gf
);
2280 if (scm_is_null (SCM_SLOT (gf
, scm_si_methods
)))
2281 SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf
));
2283 return scm_compute_applicable_methods (gf
, l
, len
- 1, 1);
2287 SCM_DEFINE (scm_sys_method_more_specific_p
, "%method-more-specific?", 3, 0, 0,
2288 (SCM m1
, SCM m2
, SCM targs
),
2289 "Return true if method @var{m1} is more specific than @var{m2} "
2290 "given the argument types (classes) listed in @var{targs}.")
2291 #define FUNC_NAME s_scm_sys_method_more_specific_p
2295 long i
, len
, m1_specs
, m2_specs
;
2296 scm_t_array_handle handle
;
2298 SCM_VALIDATE_METHOD (1, m1
);
2299 SCM_VALIDATE_METHOD (2, m2
);
2301 len
= scm_ilength (targs
);
2302 m1_specs
= scm_ilength (SPEC_OF (m1
));
2303 m2_specs
= scm_ilength (SPEC_OF (m2
));
2304 SCM_ASSERT ((len
>= m1_specs
) || (len
>= m2_specs
),
2305 targs
, SCM_ARG3
, FUNC_NAME
);
2307 /* Verify that all the arguments of TARGS are classes and place them
2310 v
= scm_c_make_vector (len
, SCM_EOL
);
2311 v_elts
= scm_vector_writable_elements (v
, &handle
, NULL
, NULL
);
2313 for (i
= 0, l
= targs
;
2314 i
< len
&& scm_is_pair (l
);
2315 i
++, l
= SCM_CDR (l
))
2317 SCM_ASSERT (SCM_CLASSP (SCM_CAR (l
)), targs
, SCM_ARG3
, FUNC_NAME
);
2318 v_elts
[i
] = SCM_CAR (l
);
2320 result
= more_specificp (m1
, m2
, v_elts
) ? SCM_BOOL_T
: SCM_BOOL_F
;
2322 scm_array_handle_release (&handle
);
2330 /******************************************************************************
2334 ******************************************************************************/
2336 /* Munge the CPL of C in place such that BEFORE appears before AFTER,
2337 assuming that currently the reverse is true. Recalculate slots and
2338 associated getters-n-setters. */
2340 fix_cpl (SCM c
, SCM before
, SCM after
)
2342 SCM cpl
= SCM_SLOT (c
, scm_si_cpl
);
2343 SCM ls
= scm_c_memq (after
, cpl
);
2346 if (scm_is_false (ls
))
2347 /* if this condition occurs, fix_cpl should not be applied this way */
2350 tail
= scm_delq1_x (before
, SCM_CDR (ls
));
2351 SCM_SETCAR (ls
, before
);
2352 SCM_SETCDR (ls
, scm_cons (after
, tail
));
2354 SCM dslots
= SCM_SLOT (c
, scm_si_direct_slots
);
2355 SCM slots
= build_slots_list (maplist (dslots
), cpl
);
2356 SCM g_n_s
= compute_getters_n_setters (slots
);
2357 SCM_SET_SLOT (c
, scm_si_slots
, slots
);
2358 SCM_SET_SLOT (c
, scm_si_getters_n_setters
, g_n_s
);
2364 make_stdcls (SCM
*var
, char *name
, SCM meta
, SCM super
, SCM slots
)
2366 SCM tmp
= scm_from_utf8_symbol (name
);
2368 *var
= scm_basic_make_class (meta
, tmp
,
2369 scm_is_pair (super
) ? super
: scm_list_1 (super
),
2371 scm_module_define (scm_module_goops
, tmp
, *var
);
2375 SCM_KEYWORD (k_slot_definition
, "slot-definition");
2378 create_standard_classes (void)
2381 SCM method_slots
= scm_list_n (scm_from_latin1_symbol ("generic-function"),
2382 scm_from_latin1_symbol ("specializers"),
2384 scm_from_latin1_symbol ("formals"),
2385 scm_from_latin1_symbol ("body"),
2386 scm_from_latin1_symbol ("make-procedure"),
2388 SCM amethod_slots
= scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("slot-definition"),
2390 k_slot_definition
));
2391 SCM gf_slots
= scm_list_4 (scm_from_latin1_symbol ("methods"),
2392 scm_list_3 (scm_from_latin1_symbol ("n-specialized"),
2395 scm_list_3 (scm_from_latin1_symbol ("extended-by"),
2398 scm_from_latin1_symbol ("effective-methods"));
2399 SCM setter_slots
= scm_list_1 (sym_setter
);
2400 SCM egf_slots
= scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("extends"),
2403 /* Foreign class slot classes */
2404 make_stdcls (&scm_class_foreign_slot
, "<foreign-slot>",
2405 scm_class_class
, scm_class_top
, SCM_EOL
);
2406 make_stdcls (&scm_class_protected
, "<protected-slot>",
2407 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2408 make_stdcls (&scm_class_hidden
, "<hidden-slot>",
2409 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2410 make_stdcls (&scm_class_opaque
, "<opaque-slot>",
2411 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2412 make_stdcls (&scm_class_read_only
, "<read-only-slot>",
2413 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2414 make_stdcls (&scm_class_self
, "<self-slot>",
2415 scm_class_class
, scm_class_read_only
, SCM_EOL
);
2416 make_stdcls (&scm_class_protected_opaque
, "<protected-opaque-slot>",
2418 scm_list_2 (scm_class_protected
, scm_class_opaque
),
2420 make_stdcls (&scm_class_protected_hidden
, "<protected-hidden-slot>",
2422 scm_list_2 (scm_class_protected
, scm_class_hidden
),
2424 make_stdcls (&scm_class_protected_read_only
, "<protected-read-only-slot>",
2426 scm_list_2 (scm_class_protected
, scm_class_read_only
),
2428 make_stdcls (&scm_class_scm
, "<scm-slot>",
2429 scm_class_class
, scm_class_protected
, SCM_EOL
);
2430 make_stdcls (&scm_class_int
, "<int-slot>",
2431 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2432 make_stdcls (&scm_class_float
, "<float-slot>",
2433 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2434 make_stdcls (&scm_class_double
, "<double-slot>",
2435 scm_class_class
, scm_class_foreign_slot
, SCM_EOL
);
2437 /* Continue initialization of class <class> */
2439 slots
= build_class_class_slots ();
2440 SCM_SET_SLOT (scm_class_class
, scm_si_direct_slots
, slots
);
2441 SCM_SET_SLOT (scm_class_class
, scm_si_slots
, slots
);
2442 SCM_SET_SLOT (scm_class_class
, scm_si_getters_n_setters
,
2443 compute_getters_n_setters (slots
));
2445 /* scm_class_generic functions classes */
2446 make_stdcls (&scm_class_procedure_class
, "<procedure-class>",
2447 scm_class_class
, scm_class_class
, SCM_EOL
);
2448 make_stdcls (&scm_class_applicable_struct_class
, "<applicable-struct-class>",
2449 scm_class_class
, scm_class_procedure_class
, SCM_EOL
);
2450 SCM_SET_VTABLE_FLAGS (scm_class_applicable_struct_class
, SCM_VTABLE_FLAG_APPLICABLE_VTABLE
);
2451 make_stdcls (&scm_class_method
, "<method>",
2452 scm_class_class
, scm_class_object
, method_slots
);
2453 make_stdcls (&scm_class_accessor_method
, "<accessor-method>",
2454 scm_class_class
, scm_class_method
, amethod_slots
);
2455 make_stdcls (&scm_class_applicable
, "<applicable>",
2456 scm_class_class
, scm_class_top
, SCM_EOL
);
2457 make_stdcls (&scm_class_applicable_struct
, "<applicable-struct>",
2458 scm_class_applicable_struct_class
,
2459 scm_list_2 (scm_class_object
, scm_class_applicable
),
2460 scm_list_1 (sym_procedure
));
2461 make_stdcls (&scm_class_generic
, "<generic>",
2462 scm_class_applicable_struct_class
, scm_class_applicable_struct
, gf_slots
);
2463 SCM_SET_CLASS_FLAGS (scm_class_generic
, SCM_CLASSF_PURE_GENERIC
);
2464 make_stdcls (&scm_class_extended_generic
, "<extended-generic>",
2465 scm_class_applicable_struct_class
, scm_class_generic
, egf_slots
);
2466 SCM_SET_CLASS_FLAGS (scm_class_extended_generic
, SCM_CLASSF_PURE_GENERIC
);
2467 make_stdcls (&scm_class_generic_with_setter
, "<generic-with-setter>",
2468 scm_class_applicable_struct_class
, scm_class_generic
, setter_slots
);
2469 SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter
, SCM_CLASSF_PURE_GENERIC
);
2470 make_stdcls (&scm_class_accessor
, "<accessor>",
2471 scm_class_applicable_struct_class
, scm_class_generic_with_setter
, SCM_EOL
);
2472 SCM_SET_CLASS_FLAGS (scm_class_accessor
, SCM_CLASSF_PURE_GENERIC
);
2473 make_stdcls (&scm_class_extended_generic_with_setter
,
2474 "<extended-generic-with-setter>",
2475 scm_class_applicable_struct_class
,
2476 scm_list_2 (scm_class_extended_generic
,
2477 scm_class_generic_with_setter
),
2479 SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter
,
2480 SCM_CLASSF_PURE_GENERIC
);
2481 make_stdcls (&scm_class_extended_accessor
, "<extended-accessor>",
2482 scm_class_applicable_struct_class
,
2483 scm_list_2 (scm_class_accessor
,
2484 scm_class_extended_generic_with_setter
),
2486 /* <extended-generic> is misplaced. */
2487 fix_cpl (scm_class_extended_accessor
,
2488 scm_class_extended_generic
, scm_class_generic_with_setter
);
2489 SCM_SET_CLASS_FLAGS (scm_class_extended_accessor
, SCM_CLASSF_PURE_GENERIC
);
2491 /* Primitive types classes */
2492 make_stdcls (&scm_class_boolean
, "<boolean>",
2493 scm_class_class
, scm_class_top
, SCM_EOL
);
2494 make_stdcls (&scm_class_char
, "<char>",
2495 scm_class_class
, scm_class_top
, SCM_EOL
);
2496 make_stdcls (&scm_class_list
, "<list>",
2497 scm_class_class
, scm_class_top
, SCM_EOL
);
2498 make_stdcls (&scm_class_pair
, "<pair>",
2499 scm_class_class
, scm_class_list
, SCM_EOL
);
2500 make_stdcls (&scm_class_null
, "<null>",
2501 scm_class_class
, scm_class_list
, SCM_EOL
);
2502 make_stdcls (&scm_class_string
, "<string>",
2503 scm_class_class
, scm_class_top
, SCM_EOL
);
2504 make_stdcls (&scm_class_symbol
, "<symbol>",
2505 scm_class_class
, scm_class_top
, SCM_EOL
);
2506 make_stdcls (&scm_class_vector
, "<vector>",
2507 scm_class_class
, scm_class_top
, SCM_EOL
);
2508 make_stdcls (&class_foreign
, "<foreign>",
2509 scm_class_class
, scm_class_top
, SCM_EOL
);
2510 make_stdcls (&class_hashtable
, "<hashtable>",
2511 scm_class_class
, scm_class_top
, SCM_EOL
);
2512 make_stdcls (&class_fluid
, "<fluid>",
2513 scm_class_class
, scm_class_top
, SCM_EOL
);
2514 make_stdcls (&class_dynamic_state
, "<dynamic-state>",
2515 scm_class_class
, scm_class_top
, SCM_EOL
);
2516 make_stdcls (&class_frame
, "<frame>",
2517 scm_class_class
, scm_class_top
, SCM_EOL
);
2518 make_stdcls (&class_vm_cont
, "<vm-continuation>",
2519 scm_class_class
, scm_class_top
, SCM_EOL
);
2520 make_stdcls (&class_bytevector
, "<bytevector>",
2521 scm_class_class
, scm_class_top
, SCM_EOL
);
2522 make_stdcls (&class_uvec
, "<uvec>",
2523 scm_class_class
, class_bytevector
, SCM_EOL
);
2524 make_stdcls (&class_array
, "<array>",
2525 scm_class_class
, scm_class_top
, SCM_EOL
);
2526 make_stdcls (&class_bitvector
, "<bitvector>",
2527 scm_class_class
, scm_class_top
, SCM_EOL
);
2528 make_stdcls (&scm_class_number
, "<number>",
2529 scm_class_class
, scm_class_top
, SCM_EOL
);
2530 make_stdcls (&scm_class_complex
, "<complex>",
2531 scm_class_class
, scm_class_number
, SCM_EOL
);
2532 make_stdcls (&scm_class_real
, "<real>",
2533 scm_class_class
, scm_class_complex
, SCM_EOL
);
2534 make_stdcls (&scm_class_integer
, "<integer>",
2535 scm_class_class
, scm_class_real
, SCM_EOL
);
2536 make_stdcls (&scm_class_fraction
, "<fraction>",
2537 scm_class_class
, scm_class_real
, SCM_EOL
);
2538 make_stdcls (&scm_class_keyword
, "<keyword>",
2539 scm_class_class
, scm_class_top
, SCM_EOL
);
2540 make_stdcls (&scm_class_unknown
, "<unknown>",
2541 scm_class_class
, scm_class_top
, SCM_EOL
);
2542 make_stdcls (&scm_class_procedure
, "<procedure>",
2543 scm_class_procedure_class
, scm_class_applicable
, SCM_EOL
);
2544 make_stdcls (&scm_class_primitive_generic
, "<primitive-generic>",
2545 scm_class_procedure_class
, scm_class_procedure
, SCM_EOL
);
2546 make_stdcls (&scm_class_port
, "<port>",
2547 scm_class_class
, scm_class_top
, SCM_EOL
);
2548 make_stdcls (&scm_class_input_port
, "<input-port>",
2549 scm_class_class
, scm_class_port
, SCM_EOL
);
2550 make_stdcls (&scm_class_output_port
, "<output-port>",
2551 scm_class_class
, scm_class_port
, SCM_EOL
);
2552 make_stdcls (&scm_class_input_output_port
, "<input-output-port>",
2554 scm_list_2 (scm_class_input_port
, scm_class_output_port
),
2558 /**********************************************************************
2562 **********************************************************************/
2565 make_class_from_template (char const *template, char const *type_name
, SCM supers
, int applicablep
)
2571 sprintf (buffer
, template, type_name
);
2572 name
= scm_from_utf8_symbol (buffer
);
2575 name
= SCM_GOOPS_UNBOUND
;
2577 return scm_basic_make_class (applicablep
? scm_class_procedure_class
: scm_class_class
,
2578 name
, supers
, SCM_EOL
);
2582 make_class_from_symbol (SCM type_name_sym
, SCM supers
, int applicablep
)
2586 if (scm_is_true (type_name_sym
))
2588 name
= scm_string_append (scm_list_3 (scm_from_locale_string ("<"),
2589 scm_symbol_to_string (type_name_sym
),
2590 scm_from_locale_string (">")));
2591 name
= scm_string_to_symbol (name
);
2594 name
= SCM_GOOPS_UNBOUND
;
2596 return scm_basic_make_class (applicablep
? scm_class_procedure_class
: scm_class_class
,
2597 name
, supers
, SCM_EOL
);
2601 scm_make_extended_class (char const *type_name
, int applicablep
)
2603 return make_class_from_template ("<%s>",
2605 scm_list_1 (applicablep
2606 ? scm_class_applicable
2612 scm_make_extended_class_from_symbol (SCM type_name_sym
, int applicablep
)
2614 return make_class_from_symbol (type_name_sym
,
2615 scm_list_1 (applicablep
2616 ? scm_class_applicable
2622 scm_i_inherit_applicable (SCM c
)
2624 if (!SCM_SUBCLASSP (c
, scm_class_applicable
))
2626 SCM dsupers
= SCM_SLOT (c
, scm_si_direct_supers
);
2627 SCM cpl
= SCM_SLOT (c
, scm_si_cpl
);
2628 /* patch scm_class_applicable into direct-supers */
2629 SCM top
= scm_c_memq (scm_class_top
, dsupers
);
2630 if (scm_is_false (top
))
2631 dsupers
= scm_append (scm_list_2 (dsupers
,
2632 scm_list_1 (scm_class_applicable
)));
2635 SCM_SETCAR (top
, scm_class_applicable
);
2636 SCM_SETCDR (top
, scm_cons (scm_class_top
, SCM_CDR (top
)));
2638 SCM_SET_SLOT (c
, scm_si_direct_supers
, dsupers
);
2639 /* patch scm_class_applicable into cpl */
2640 top
= scm_c_memq (scm_class_top
, cpl
);
2641 if (scm_is_false (top
))
2645 SCM_SETCAR (top
, scm_class_applicable
);
2646 SCM_SETCDR (top
, scm_cons (scm_class_top
, SCM_CDR (top
)));
2648 /* add class to direct-subclasses of scm_class_applicable */
2649 SCM_SET_SLOT (scm_class_applicable
,
2650 scm_si_direct_subclasses
,
2651 scm_cons (c
, SCM_SLOT (scm_class_applicable
,
2652 scm_si_direct_subclasses
)));
2657 create_smob_classes (void)
2661 for (i
= 0; i
< SCM_I_MAX_SMOB_TYPE_COUNT
; ++i
)
2662 scm_smob_class
[i
] = SCM_BOOL_F
;
2664 for (i
= 0; i
< scm_numsmob
; ++i
)
2665 if (scm_is_false (scm_smob_class
[i
]))
2666 scm_smob_class
[i
] = scm_make_extended_class (SCM_SMOBNAME (i
),
2667 scm_smobs
[i
].apply
!= 0);
2671 scm_make_port_classes (long ptobnum
, char *type_name
)
2673 SCM c
, class = make_class_from_template ("<%s-port>",
2675 scm_list_1 (scm_class_port
),
2677 scm_port_class
[SCM_IN_PCLASS_INDEX
+ ptobnum
]
2678 = make_class_from_template ("<%s-input-port>",
2680 scm_list_2 (class, scm_class_input_port
),
2682 scm_port_class
[SCM_OUT_PCLASS_INDEX
+ ptobnum
]
2683 = make_class_from_template ("<%s-output-port>",
2685 scm_list_2 (class, scm_class_output_port
),
2687 scm_port_class
[SCM_INOUT_PCLASS_INDEX
+ ptobnum
]
2689 = make_class_from_template ("<%s-input-output-port>",
2691 scm_list_2 (class, scm_class_input_output_port
),
2693 /* Patch cpl (since this tree is too complex for the C level compute-cpl) */
2694 SCM_SET_SLOT (c
, scm_si_cpl
,
2695 scm_cons2 (c
, class, SCM_SLOT (scm_class_input_output_port
, scm_si_cpl
)));
2699 create_port_classes (void)
2703 for (i
= scm_c_num_port_types () - 1; i
>= 0; i
--)
2704 scm_make_port_classes (i
, SCM_PTOBNAME (i
));
2708 make_struct_class (void *closure SCM_UNUSED
,
2709 SCM vtable
, SCM data
, SCM prev SCM_UNUSED
)
2711 if (scm_is_false (data
))
2712 scm_i_define_class_for_vtable (vtable
);
2713 return SCM_UNSPECIFIED
;
2717 create_struct_classes (void)
2719 /* FIXME: take the vtable_class_map while initializing goops? */
2720 scm_internal_hash_fold (make_struct_class
, 0, SCM_BOOL_F
,
2724 /**********************************************************************
2728 **********************************************************************/
2733 if (!goops_loaded_p
)
2734 scm_c_resolve_module ("oop goops");
2738 SCM_SYMBOL (sym_o
, "o");
2739 SCM_SYMBOL (sym_x
, "x");
2741 SCM_KEYWORD (k_accessor
, "accessor");
2742 SCM_KEYWORD (k_getter
, "getter");
2745 scm_ensure_accessor (SCM name
)
2749 var
= scm_module_variable (scm_current_module (), name
);
2750 if (SCM_VARIABLEP (var
) && !SCM_UNBNDP (SCM_VARIABLE_REF (var
)))
2751 gf
= SCM_VARIABLE_REF (var
);
2755 if (!SCM_IS_A_P (gf
, scm_class_accessor
))
2757 gf
= scm_make (scm_list_3 (scm_class_generic
, k_name
, name
));
2758 gf
= scm_make (scm_list_5 (scm_class_accessor
,
2759 k_name
, name
, k_setter
, gf
));
2767 * Debugging utilities
2770 SCM_DEFINE (scm_pure_generic_p
, "pure-generic?", 1, 0, 0,
2772 "Return @code{#t} if @var{obj} is a pure generic.")
2773 #define FUNC_NAME s_scm_pure_generic_p
2775 return scm_from_bool (SCM_PUREGENERICP (obj
));
2779 #endif /* GUILE_DEBUG */
2785 SCM_DEFINE (scm_sys_goops_loaded
, "%goops-loaded", 0, 0, 0,
2787 "Announce that GOOPS is loaded and perform initialization\n"
2788 "on the C level which depends on the loaded GOOPS modules.")
2789 #define FUNC_NAME s_scm_sys_goops_loaded
2792 var_compute_applicable_methods
=
2793 scm_module_variable (scm_module_goops
, sym_compute_applicable_methods
);
2795 scm_module_variable (scm_module_goops
, sym_slot_unbound
);
2797 scm_module_variable (scm_module_goops
, sym_slot_missing
);
2799 scm_module_variable (scm_module_goops
, sym_compute_cpl
);
2800 var_no_applicable_method
=
2801 scm_module_variable (scm_module_goops
, sym_no_applicable_method
);
2803 scm_module_variable (scm_module_goops
, sym_change_class
);
2804 setup_extended_primitive_generics ();
2805 return SCM_UNSPECIFIED
;
2809 SCM scm_module_goops
;
2812 scm_init_goops_builtins (void)
2814 scm_module_goops
= scm_current_module ();
2816 goops_rstate
= scm_c_make_rstate ("GOOPS", 5);
2818 #include "libguile/goops.x"
2820 hell
= scm_calloc (hell_size
* sizeof (*hell
));
2821 hell_mutex
= scm_make_mutex ();
2823 create_basic_classes ();
2824 create_standard_classes ();
2825 create_smob_classes ();
2826 create_struct_classes ();
2827 create_port_classes ();
2830 SCM name
= scm_from_latin1_symbol ("no-applicable-method");
2831 scm_no_applicable_method
=
2832 scm_make (scm_list_3 (scm_class_generic
, k_name
, name
));
2833 scm_module_define (scm_module_goops
, name
, scm_no_applicable_method
);
2836 return SCM_UNSPECIFIED
;
2842 scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0,
2843 scm_init_goops_builtins
);