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#ifndef INTERNAL_CLASS_H /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_CLASS_H
/**
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @brief Internal header for Class.
*/
#include "id.h"
#include "id_table.h" /* for struct rb_id_table */
#include "internal/serial.h" /* for rb_serial_t */
#include "internal/static_assert.h"
#include "internal/variable.h" /* for rb_class_ivar_set */
#include "ruby/internal/stdbool.h" /* for bool */
#include "ruby/intern.h" /* for rb_alloc_func_t */
#include "ruby/ruby.h" /* for struct RBasic */
#include "shape.h"
#ifdef RCLASS_SUPER
# undef RCLASS_SUPER
#endif
struct rb_subclass_entry {
VALUE klass;
struct rb_subclass_entry *next;
struct rb_subclass_entry *prev;
};
typedef struct rb_subclass_entry rb_subclass_entry_t;
struct rb_cvar_class_tbl_entry {
uint32_t index;
rb_serial_t global_cvar_state;
VALUE class_value;
};
struct rb_classext_struct {
VALUE *iv_ptr;
struct rb_id_table *const_tbl;
struct rb_id_table *callable_m_tbl;
struct rb_id_table *cc_tbl; /* ID -> [[ci, cc1], cc2, ...] */
struct rb_id_table *cvc_tbl;
size_t superclass_depth;
VALUE *superclasses;
struct rb_subclass_entry *subclasses;
struct rb_subclass_entry *subclass_entry;
/**
* In the case that this is an `ICLASS`, `module_subclasses` points to the link
* in the module's `subclasses` list that indicates that the klass has been
* included. Hopefully that makes sense.
*/
struct rb_subclass_entry *module_subclass_entry;
const VALUE origin_;
const VALUE refined_class;
union {
struct {
rb_alloc_func_t allocator;
} class;
struct {
VALUE attached_object;
} singleton_class;
} as;
const VALUE includer;
#if !SHAPE_IN_BASIC_FLAGS
shape_id_t shape_id;
#endif
uint32_t max_iv_count;
unsigned char variation_count;
bool permanent_classpath;
VALUE classpath;
};
typedef struct rb_classext_struct rb_classext_t;
STATIC_ASSERT(shape_max_variations, SHAPE_MAX_VARIATIONS < (1 << (sizeof(((rb_classext_t *)0)->variation_count) * CHAR_BIT)));
struct RClass {
struct RBasic basic;
VALUE super;
struct rb_id_table *m_tbl;
#if !RCLASS_EXT_EMBEDDED
struct rb_classext_struct *ptr;
#endif
};
#if RCLASS_EXT_EMBEDDED
// Assert that classes can be embedded in size_pools[2] (which has 160B slot size)
STATIC_ASSERT(sizeof_rb_classext_t, sizeof(struct RClass) + sizeof(rb_classext_t) <= 4 * RVALUE_SIZE);
#endif
#if RCLASS_EXT_EMBEDDED
# define RCLASS_EXT(c) ((rb_classext_t *)((char *)(c) + sizeof(struct RClass)))
#else
# define RCLASS_EXT(c) (RCLASS(c)->ptr)
#endif
#define RCLASS_CONST_TBL(c) (RCLASS_EXT(c)->const_tbl)
#define RCLASS_M_TBL(c) (RCLASS(c)->m_tbl)
#define RCLASS_IVPTR(c) (RCLASS_EXT(c)->iv_ptr)
#define RCLASS_CALLABLE_M_TBL(c) (RCLASS_EXT(c)->callable_m_tbl)
#define RCLASS_CC_TBL(c) (RCLASS_EXT(c)->cc_tbl)
#define RCLASS_CVC_TBL(c) (RCLASS_EXT(c)->cvc_tbl)
#define RCLASS_ORIGIN(c) (RCLASS_EXT(c)->origin_)
#define RCLASS_REFINED_CLASS(c) (RCLASS_EXT(c)->refined_class)
#define RCLASS_INCLUDER(c) (RCLASS_EXT(c)->includer)
#define RCLASS_SUBCLASS_ENTRY(c) (RCLASS_EXT(c)->subclass_entry)
#define RCLASS_MODULE_SUBCLASS_ENTRY(c) (RCLASS_EXT(c)->module_subclass_entry)
#define RCLASS_SUBCLASSES(c) (RCLASS_EXT(c)->subclasses)
#define RCLASS_SUPERCLASS_DEPTH(c) (RCLASS_EXT(c)->superclass_depth)
#define RCLASS_SUPERCLASSES(c) (RCLASS_EXT(c)->superclasses)
#define RCLASS_ATTACHED_OBJECT(c) (RCLASS_EXT(c)->as.singleton_class.attached_object)
#define RICLASS_IS_ORIGIN FL_USER0
#define RCLASS_CLONED FL_USER1
#define RCLASS_SUPERCLASSES_INCLUDE_SELF FL_USER2
#define RICLASS_ORIGIN_SHARED_MTBL FL_USER3
/* class.c */
void rb_class_subclass_add(VALUE super, VALUE klass);
void rb_class_remove_from_super_subclasses(VALUE);
void rb_class_update_superclasses(VALUE);
size_t rb_class_superclasses_memsize(VALUE);
void rb_class_remove_subclass_head(VALUE);
int rb_singleton_class_internal_p(VALUE sklass);
VALUE rb_class_boot(VALUE);
VALUE rb_class_s_alloc(VALUE klass);
VALUE rb_module_s_alloc(VALUE klass);
void rb_module_set_initialized(VALUE module);
void rb_module_check_initializable(VALUE module);
VALUE rb_make_metaclass(VALUE, VALUE);
VALUE rb_include_class_new(VALUE, VALUE);
void rb_class_foreach_subclass(VALUE klass, void (*f)(VALUE, VALUE), VALUE);
void rb_class_detach_subclasses(VALUE);
void rb_class_detach_module_subclasses(VALUE);
void rb_class_remove_from_module_subclasses(VALUE);
VALUE rb_obj_methods(int argc, const VALUE *argv, VALUE obj);
VALUE rb_obj_protected_methods(int argc, const VALUE *argv, VALUE obj);
VALUE rb_obj_private_methods(int argc, const VALUE *argv, VALUE obj);
VALUE rb_obj_public_methods(int argc, const VALUE *argv, VALUE obj);
VALUE rb_class_undefined_instance_methods(VALUE mod);
VALUE rb_special_singleton_class(VALUE);
VALUE rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach);
VALUE rb_singleton_class_get(VALUE obj);
void rb_undef_methods_from(VALUE klass, VALUE super);
static inline void RCLASS_SET_ORIGIN(VALUE klass, VALUE origin);
static inline void RICLASS_SET_ORIGIN_SHARED_MTBL(VALUE iclass);
static inline VALUE RCLASS_SUPER(VALUE klass);
static inline VALUE RCLASS_SET_SUPER(VALUE klass, VALUE super);
static inline void RCLASS_SET_INCLUDER(VALUE iclass, VALUE klass);
MJIT_SYMBOL_EXPORT_BEGIN
VALUE rb_class_inherited(VALUE, VALUE);
VALUE rb_keyword_error_new(const char *, VALUE);
MJIT_SYMBOL_EXPORT_END
static inline rb_alloc_func_t
RCLASS_ALLOCATOR(VALUE klass)
{
if (FL_TEST_RAW(klass, FL_SINGLETON)) {
return NULL;
}
return RCLASS_EXT(klass)->as.class.allocator;
}
static inline void
RCLASS_SET_ALLOCATOR(VALUE klass, rb_alloc_func_t allocator)
{
assert(!FL_TEST(klass, FL_SINGLETON));
RCLASS_EXT(klass)->as.class.allocator = allocator;
}
static inline void
RCLASS_SET_ORIGIN(VALUE klass, VALUE origin)
{
RB_OBJ_WRITE(klass, &RCLASS_ORIGIN(klass), origin);
if (klass != origin) FL_SET(origin, RICLASS_IS_ORIGIN);
}
static inline void
RICLASS_SET_ORIGIN_SHARED_MTBL(VALUE iclass)
{
FL_SET(iclass, RICLASS_ORIGIN_SHARED_MTBL);
}
static inline bool
RICLASS_OWNS_M_TBL_P(VALUE iclass)
{
return FL_TEST_RAW(iclass, RICLASS_IS_ORIGIN | RICLASS_ORIGIN_SHARED_MTBL) == RICLASS_IS_ORIGIN;
}
static inline void
RCLASS_SET_INCLUDER(VALUE iclass, VALUE klass)
{
RB_OBJ_WRITE(iclass, &RCLASS_INCLUDER(iclass), klass);
}
static inline VALUE
RCLASS_SUPER(VALUE klass)
{
return RCLASS(klass)->super;
}
static inline VALUE
RCLASS_SET_SUPER(VALUE klass, VALUE super)
{
if (super) {
rb_class_remove_from_super_subclasses(klass);
rb_class_subclass_add(super, klass);
}
RB_OBJ_WRITE(klass, &RCLASS(klass)->super, super);
rb_class_update_superclasses(klass);
return super;
}
static inline void
RCLASS_SET_CLASSPATH(VALUE klass, VALUE classpath, bool permanent)
{
assert(BUILTIN_TYPE(klass) == T_CLASS || BUILTIN_TYPE(klass) == T_MODULE);
assert(classpath == 0 || BUILTIN_TYPE(classpath) == T_STRING);
RB_OBJ_WRITE(klass, &(RCLASS_EXT(klass)->classpath), classpath);
RCLASS_EXT(klass)->permanent_classpath = permanent;
}
static inline VALUE
RCLASS_SET_ATTACHED_OBJECT(VALUE klass, VALUE attached_object)
{
assert(BUILTIN_TYPE(klass) == T_CLASS);
assert(FL_TEST_RAW(klass, FL_SINGLETON));
RB_OBJ_WRITE(klass, &RCLASS_EXT(klass)->as.singleton_class.attached_object, attached_object);
return attached_object;
}
#endif /* INTERNAL_CLASS_H */
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