rbasic.h

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#ifndef RBIMPL_RBASIC_H                              /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_RBASIC_H
#include "ruby/internal/attr/artificial.h"
#include "ruby/internal/attr/constexpr.h"
#include "ruby/internal/attr/forceinline.h"
#include "ruby/internal/attr/noalias.h"
#include "ruby/internal/attr/pure.h"
#include "ruby/internal/cast.h"
#include "ruby/internal/dllexport.h"
#include "ruby/internal/special_consts.h"
#include "ruby/internal/value.h"
#include "ruby/assert.h"
 
#define RBASIC(obj)                 RBIMPL_CAST((struct RBasic *)(obj))
#define RBASIC_CLASS                RBASIC_CLASS
#define RBIMPL_RVALUE_EMBED_LEN_MAX 3
#define RVALUE_EMBED_LEN_MAX        RVALUE_EMBED_LEN_MAX
#define RBIMPL_EMBED_LEN_MAX_OF(T) \
    RBIMPL_CAST((int)(sizeof(VALUE[RBIMPL_RVALUE_EMBED_LEN_MAX]) / (sizeof(T))))
enum ruby_rvalue_flags {
    RVALUE_EMBED_LEN_MAX = RBIMPL_RVALUE_EMBED_LEN_MAX
};
 
struct
RUBY_ALIGNAS(SIZEOF_VALUE)
RBasic {
 
    VALUE flags;
 
    const VALUE klass;
 
#ifdef __cplusplus
  public:
    RBIMPL_ATTR_CONSTEXPR(CXX11)
    RBIMPL_ATTR_ARTIFICIAL()
    RBIMPL_ATTR_FORCEINLINE()
    RBIMPL_ATTR_NOALIAS()
    RBasic() :
        flags(RBIMPL_VALUE_NULL),
        klass(RBIMPL_VALUE_NULL)
    {
    }
#endif
};
 
RBIMPL_SYMBOL_EXPORT_BEGIN()
VALUE rb_obj_hide(VALUE obj);
 
VALUE rb_obj_reveal(VALUE obj, VALUE klass); /* do not use this API to change klass information */
RBIMPL_SYMBOL_EXPORT_END()
 
RBIMPL_ATTR_PURE_UNLESS_DEBUG()
RBIMPL_ATTR_ARTIFICIAL()
static inline VALUE
RBASIC_CLASS(VALUE obj)
{
    RBIMPL_ASSERT_OR_ASSUME(! RB_SPECIAL_CONST_P(obj));
    return RBASIC(obj)->klass;
}
 
#endif /* RBIMPL_RBASIC_H */