зеркало из https://github.com/github/ruby.git
284 строки
9.1 KiB
C
284 строки
9.1 KiB
C
#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"
|
|
#include "ruby_assert.h"
|
|
#include "vm_core.h"
|
|
#include "vm_sync.h"
|
|
#include "method.h" /* for rb_cref_t */
|
|
|
|
#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;
|
|
const rb_cref_t * cref;
|
|
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 -> [[ci1, cc1], [ci2, 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;
|
|
attr_index_t max_iv_count;
|
|
unsigned char variation_count;
|
|
bool permanent_classpath : 1;
|
|
bool cloned : 1;
|
|
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;
|
|
};
|
|
|
|
// 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);
|
|
|
|
struct RClass_and_rb_classext_t {
|
|
struct RClass rclass;
|
|
rb_classext_t classext;
|
|
};
|
|
|
|
#define RCLASS_EXT(c) (&((struct RClass_and_rb_classext_t*)(c))->classext)
|
|
#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 RCLASS_IS_ROOT FL_USER0
|
|
#define RICLASS_IS_ORIGIN FL_USER0
|
|
#define RCLASS_SUPERCLASSES_INCLUDE_SELF FL_USER2
|
|
#define RICLASS_ORIGIN_SHARED_MTBL FL_USER3
|
|
|
|
static inline st_table *
|
|
RCLASS_IV_HASH(VALUE obj)
|
|
{
|
|
RUBY_ASSERT(RB_TYPE_P(obj, RUBY_T_CLASS) || RB_TYPE_P(obj, RUBY_T_MODULE));
|
|
RUBY_ASSERT(rb_shape_obj_too_complex(obj));
|
|
return (st_table *)RCLASS_IVPTR(obj);
|
|
}
|
|
|
|
static inline void
|
|
RCLASS_SET_IV_HASH(VALUE obj, const st_table *tbl)
|
|
{
|
|
RUBY_ASSERT(RB_TYPE_P(obj, RUBY_T_CLASS) || RB_TYPE_P(obj, RUBY_T_MODULE));
|
|
RUBY_ASSERT(rb_shape_obj_too_complex(obj));
|
|
RCLASS_IVPTR(obj) = (VALUE *)tbl;
|
|
}
|
|
|
|
static inline uint32_t
|
|
RCLASS_IV_COUNT(VALUE obj)
|
|
{
|
|
RUBY_ASSERT(RB_TYPE_P(obj, RUBY_T_CLASS) || RB_TYPE_P(obj, RUBY_T_MODULE));
|
|
if (rb_shape_obj_too_complex(obj)) {
|
|
uint32_t count;
|
|
|
|
// "Too complex" classes could have their IV hash mutated in
|
|
// parallel, so lets lock around getting the hash size.
|
|
RB_VM_LOCK_ENTER();
|
|
{
|
|
count = (uint32_t)rb_st_table_size(RCLASS_IV_HASH(obj));
|
|
}
|
|
RB_VM_LOCK_LEAVE();
|
|
|
|
return count;
|
|
}
|
|
else {
|
|
return rb_shape_get_shape_by_id(RCLASS_SHAPE_ID(obj))->next_iv_index;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
RCLASS_SET_M_TBL(VALUE klass, struct rb_id_table *table)
|
|
{
|
|
RUBY_ASSERT(!RB_OBJ_PROMOTED(klass));
|
|
RCLASS_M_TBL(klass) = table;
|
|
}
|
|
|
|
/* 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_define_class_id_under_no_pin(VALUE outer, ID id, VALUE super);
|
|
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);
|
|
|
|
VALUE rb_class_inherited(VALUE, VALUE);
|
|
VALUE rb_keyword_error_new(const char *, VALUE);
|
|
|
|
static inline bool
|
|
RCLASS_SINGLETON_P(VALUE klass)
|
|
{
|
|
return RB_TYPE_P(klass, T_CLASS) && FL_TEST_RAW(klass, FL_SINGLETON);
|
|
}
|
|
|
|
static inline rb_alloc_func_t
|
|
RCLASS_ALLOCATOR(VALUE klass)
|
|
{
|
|
if (RCLASS_SINGLETON_P(klass)) {
|
|
return 0;
|
|
}
|
|
return RCLASS_EXT(klass)->as.class.allocator;
|
|
}
|
|
|
|
static inline void
|
|
RCLASS_SET_ALLOCATOR(VALUE klass, rb_alloc_func_t allocator)
|
|
{
|
|
assert(!RCLASS_SINGLETON_P(klass));
|
|
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(RCLASS_SINGLETON_P(klass));
|
|
|
|
RB_OBJ_WRITE(klass, &RCLASS_EXT(klass)->as.singleton_class.attached_object, attached_object);
|
|
return attached_object;
|
|
}
|
|
|
|
#endif /* INTERNAL_CLASS_H */
|