mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
fdf71d8f2d
Now each method entry holds visibility information in flag bits.
107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/**
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** @file mruby/class.h - Class class
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**
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** See Copyright Notice in mruby.h
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*/
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#ifndef MRUBY_CLASS_H
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#define MRUBY_CLASS_H
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#include "common.h"
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/**
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* Class class
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*/
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MRB_BEGIN_DECL
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struct RClass {
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MRB_OBJECT_HEADER;
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struct iv_tbl *iv;
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struct mt_tbl *mt;
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struct RClass *super;
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};
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#define mrb_class_ptr(v) ((struct RClass*)(mrb_ptr(v)))
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MRB_INLINE struct RClass*
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mrb_class(mrb_state *mrb, mrb_value v)
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{
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if (!mrb_immediate_p(v)) {
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return mrb_obj_ptr(v)->c;
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}
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switch (mrb_type(v)) {
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case MRB_TT_FALSE:
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if (mrb_fixnum(v))
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return mrb->false_class;
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return mrb->nil_class;
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case MRB_TT_TRUE:
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return mrb->true_class;
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case MRB_TT_SYMBOL:
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return mrb->symbol_class;
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case MRB_TT_INTEGER:
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return mrb->integer_class;
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#ifndef MRB_NO_FLOAT
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case MRB_TT_FLOAT:
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return mrb->float_class;
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#endif
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case MRB_TT_CPTR:
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return mrb->object_class;
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default:
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return NULL;
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}
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}
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/* flags:
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20: frozen
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19: is_prepended
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18: is_origin
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17: is_inherited (used by method cache)
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7-16: unused
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6: prohibit Class#allocate
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0-5: instance type
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*/
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#define MRB_FL_CLASS_IS_PREPENDED (1 << 19)
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#define MRB_FL_CLASS_IS_ORIGIN (1 << 18)
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#define MRB_CLASS_ORIGIN(c) do {\
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if ((c)->flags & MRB_FL_CLASS_IS_PREPENDED) {\
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(c) = (c)->super;\
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while (!((c)->flags & MRB_FL_CLASS_IS_ORIGIN)) {\
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(c) = (c)->super;\
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}\
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}\
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} while (0)
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#define MRB_FL_CLASS_IS_INHERITED (1 << 17)
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#define MRB_INSTANCE_TT_MASK (0x1F)
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#define MRB_SET_INSTANCE_TT(c, tt) ((c)->flags = (((c)->flags & ~MRB_INSTANCE_TT_MASK) | (char)(tt)))
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#define MRB_INSTANCE_TT(c) (enum mrb_vtype)((c)->flags & MRB_INSTANCE_TT_MASK)
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#define MRB_FL_UNDEF_ALLOCATE (1 << 6)
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#define MRB_UNDEF_ALLOCATOR(c) (mrb_assert((c)->tt == MRB_TT_CLASS), (c)->flags |= MRB_FL_UNDEF_ALLOCATE)
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#define MRB_UNDEF_ALLOCATOR_P(c) ((c)->flags & MRB_FL_UNDEF_ALLOCATE)
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#define MRB_DEFINE_ALLOCATOR(c) ((c)->flags &= ~MRB_FL_UNDEF_ALLOCATE)
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#define MRB_SET_VISIBILITY(c,v) ((c)->flags = (((c)->flags & ~(0x3<<7)) | (((v)&0x3)<<7)))
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#define MRB_VISIBILITY(c) (((c)->flags>>7) & 0x3)
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MRB_API void mrb_define_method_raw(mrb_state*, struct RClass*, mrb_sym, mrb_method_t);
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MRB_API void mrb_alias_method(mrb_state*, struct RClass *c, mrb_sym a, mrb_sym b);
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MRB_API void mrb_remove_method(mrb_state *mrb, struct RClass *c, mrb_sym sym);
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MRB_API mrb_method_t mrb_method_search_vm(mrb_state*, struct RClass**, mrb_sym);
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MRB_API mrb_method_t mrb_method_search(mrb_state*, struct RClass*, mrb_sym);
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MRB_API struct RClass* mrb_class_real(struct RClass* cl);
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#ifndef MRB_NO_METHOD_CACHE
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void mrb_mc_clear_by_class(mrb_state *mrb, struct RClass* c);
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#else
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#define mrb_mc_clear_by_class(mrb,c)
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#endif
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/* return non zero to break the loop */
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typedef int (mrb_mt_foreach_func)(mrb_state*,mrb_sym,mrb_method_t,void*);
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MRB_API void mrb_mt_foreach(mrb_state*, struct RClass*, mrb_mt_foreach_func*, void*);
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MRB_END_DECL
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#endif /* MRUBY_CLASS_H */
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