Ruby 3.2.4p170 (2024-04-23 revision af471c0e0127eea0cafa6f308c0425bbfab0acf5)
class.h
1#ifndef INTERNAL_CLASS_H /*-*-C-*-vi:se ft=c:*/
2#define INTERNAL_CLASS_H
11#include "id_table.h" /* for struct rb_id_table */
12#include "internal/gc.h" /* for RB_OBJ_WRITE */
13#include "internal/serial.h" /* for rb_serial_t */
14#include "ruby/internal/stdbool.h" /* for bool */
15#include "ruby/intern.h" /* for rb_alloc_func_t */
16#include "ruby/ruby.h" /* for struct RBasic */
17#include "shape.h"
18#include "ruby_assert.h"
19#include "vm_core.h"
20#include "method.h" /* for rb_cref_t */
21
22#ifdef RCLASS_SUPER
23# undef RCLASS_SUPER
24#endif
25
27 VALUE klass;
28 struct rb_subclass_entry *next;
29 struct rb_subclass_entry *prev;
30};
31
33 uint32_t index;
34 rb_serial_t global_cvar_state;
35 const rb_cref_t * cref;
36 VALUE class_value;
37};
38
40 VALUE *iv_ptr;
41 struct rb_id_table *const_tbl;
42 struct rb_id_table *callable_m_tbl;
43 struct rb_id_table *cc_tbl; /* ID -> [[ci, cc1], cc2, ...] */
44 struct rb_id_table *cvc_tbl;
45 size_t superclass_depth;
46 VALUE *superclasses;
47 struct rb_subclass_entry *subclasses;
48 struct rb_subclass_entry *subclass_entry;
55 const VALUE origin_;
56 const VALUE refined_class;
57 rb_alloc_func_t allocator;
58 const VALUE includer;
59 uint32_t max_iv_count;
60 uint32_t variation_count;
61#if !SHAPE_IN_BASIC_FLAGS
62 shape_id_t shape_id;
63#endif
64};
65
66struct RClass {
67 struct RBasic basic;
68 VALUE super;
69 struct rb_id_table *m_tbl;
70#if SIZE_POOL_COUNT == 1
71 struct rb_classext_struct *ptr;
72#endif
73};
74
77
78#if RCLASS_EXT_EMBEDDED
79# define RCLASS_EXT(c) ((rb_classext_t *)((char *)(c) + sizeof(struct RClass)))
80#else
81# define RCLASS_EXT(c) (RCLASS(c)->ptr)
82#endif
83#define RCLASS_CONST_TBL(c) (RCLASS_EXT(c)->const_tbl)
84#define RCLASS_M_TBL(c) (RCLASS(c)->m_tbl)
85#define RCLASS_IVPTR(c) (RCLASS_EXT(c)->iv_ptr)
86#define RCLASS_CALLABLE_M_TBL(c) (RCLASS_EXT(c)->callable_m_tbl)
87#define RCLASS_CC_TBL(c) (RCLASS_EXT(c)->cc_tbl)
88#define RCLASS_CVC_TBL(c) (RCLASS_EXT(c)->cvc_tbl)
89#define RCLASS_ORIGIN(c) (RCLASS_EXT(c)->origin_)
90#define RCLASS_REFINED_CLASS(c) (RCLASS_EXT(c)->refined_class)
91#define RCLASS_INCLUDER(c) (RCLASS_EXT(c)->includer)
92#define RCLASS_SUBCLASS_ENTRY(c) (RCLASS_EXT(c)->subclass_entry)
93#define RCLASS_MODULE_SUBCLASS_ENTRY(c) (RCLASS_EXT(c)->module_subclass_entry)
94#define RCLASS_ALLOCATOR(c) (RCLASS_EXT(c)->allocator)
95#define RCLASS_SUBCLASSES(c) (RCLASS_EXT(c)->subclasses)
96#define RCLASS_SUPERCLASS_DEPTH(c) (RCLASS_EXT(c)->superclass_depth)
97#define RCLASS_SUPERCLASSES(c) (RCLASS_EXT(c)->superclasses)
98
99#define RICLASS_IS_ORIGIN FL_USER0
100#define RCLASS_CLONED FL_USER1
101#define RCLASS_SUPERCLASSES_INCLUDE_SELF FL_USER2
102#define RICLASS_ORIGIN_SHARED_MTBL FL_USER3
103
104/* class.c */
105void rb_class_subclass_add(VALUE super, VALUE klass);
106void rb_class_remove_from_super_subclasses(VALUE);
107void rb_class_update_superclasses(VALUE);
108size_t rb_class_superclasses_memsize(VALUE);
109void rb_class_remove_subclass_head(VALUE);
110int rb_singleton_class_internal_p(VALUE sklass);
112VALUE rb_class_s_alloc(VALUE klass);
113VALUE rb_module_s_alloc(VALUE klass);
114void rb_module_set_initialized(VALUE module);
115void rb_module_check_initializable(VALUE module);
116VALUE rb_make_metaclass(VALUE, VALUE);
117VALUE rb_include_class_new(VALUE, VALUE);
118void rb_class_foreach_subclass(VALUE klass, void (*f)(VALUE, VALUE), VALUE);
119void rb_class_detach_subclasses(VALUE);
120void rb_class_detach_module_subclasses(VALUE);
121void rb_class_remove_from_module_subclasses(VALUE);
122VALUE rb_obj_methods(int argc, const VALUE *argv, VALUE obj);
123VALUE rb_obj_protected_methods(int argc, const VALUE *argv, VALUE obj);
124VALUE rb_obj_private_methods(int argc, const VALUE *argv, VALUE obj);
125VALUE rb_obj_public_methods(int argc, const VALUE *argv, VALUE obj);
126VALUE rb_class_undefined_instance_methods(VALUE mod);
127VALUE rb_special_singleton_class(VALUE);
128VALUE rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach);
130void rb_undef_methods_from(VALUE klass, VALUE super);
131
132static inline void RCLASS_SET_ORIGIN(VALUE klass, VALUE origin);
133static inline void RICLASS_SET_ORIGIN_SHARED_MTBL(VALUE iclass);
134static inline VALUE RCLASS_SUPER(VALUE klass);
135static inline VALUE RCLASS_SET_SUPER(VALUE klass, VALUE super);
136static inline void RCLASS_SET_INCLUDER(VALUE iclass, VALUE klass);
137
138MJIT_SYMBOL_EXPORT_BEGIN
140VALUE rb_keyword_error_new(const char *, VALUE);
141MJIT_SYMBOL_EXPORT_END
142
143static inline void
144RCLASS_SET_ORIGIN(VALUE klass, VALUE origin)
145{
146 RB_OBJ_WRITE(klass, &RCLASS_ORIGIN(klass), origin);
147 if (klass != origin) FL_SET(origin, RICLASS_IS_ORIGIN);
148}
149
150static inline void
151RICLASS_SET_ORIGIN_SHARED_MTBL(VALUE iclass)
152{
153 FL_SET(iclass, RICLASS_ORIGIN_SHARED_MTBL);
154}
155
156static inline bool
157RICLASS_OWNS_M_TBL_P(VALUE iclass)
158{
159 return FL_TEST_RAW(iclass, RICLASS_IS_ORIGIN | RICLASS_ORIGIN_SHARED_MTBL) == RICLASS_IS_ORIGIN;
160}
161
162static inline void
163RCLASS_SET_INCLUDER(VALUE iclass, VALUE klass)
164{
165 RB_OBJ_WRITE(iclass, &RCLASS_INCLUDER(iclass), klass);
166}
167
168static inline VALUE
169RCLASS_SUPER(VALUE klass)
170{
171 return RCLASS(klass)->super;
172}
173
174static inline VALUE
175RCLASS_SET_SUPER(VALUE klass, VALUE super)
176{
177 if (super) {
178 rb_class_remove_from_super_subclasses(klass);
179 rb_class_subclass_add(super, klass);
180 }
181 RB_OBJ_WRITE(klass, &RCLASS(klass)->super, super);
182 rb_class_update_superclasses(klass);
183 return super;
184}
185
186#endif /* INTERNAL_CLASS_H */
VALUE rb_class_boot(VALUE)
A utility function that wraps class_alloc.
Definition class.c:247
VALUE rb_class_inherited(VALUE, VALUE)
Calls Class::inherited.
Definition class.c:914
VALUE rb_singleton_class_get(VALUE obj)
Returns the singleton class of obj, or nil if obj is not a singleton object.
Definition class.c:2222
#define FL_TEST_RAW
Old name of RB_FL_TEST_RAW.
Definition fl_type.h:140
#define FL_SET
Old name of RB_FL_SET.
Definition fl_type.h:137
#define RB_OBJ_WRITE(old, slot, young)
Declaration of a "back" pointer.
Definition rgengc.h:220
VALUE(* rb_alloc_func_t)(VALUE klass)
This is the type of functions that ruby calls when trying to allocate an object.
Definition vm.h:216
#define RCLASS_SUPER
Just another name of rb_class_get_superclass.
Definition rclass.h:44
#define RCLASS(obj)
Convenient casting macro.
Definition rclass.h:38
C99 shim for <stdbool.h>
Ruby's object's, base components.
Definition rbasic.h:64
Definition class.h:66
struct rb_subclass_entry * module_subclass_entry
In the case that this is an ICLASS, module_subclasses points to the link in the module's subclasses l...
Definition class.h:54
CREF (Class REFerence)
Definition method.h:44
Definition class.h:32
Internal header for Class.
Definition class.h:26
uintptr_t VALUE
Type that represents a Ruby object.
Definition value.h:40