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class.c: define MT_KEY_SHIFT (2) for the future

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Yukihiro "Matz" Matsumoto
2024-12-27 18:39:46 +09:00
parent 32d11d86ff
commit cf8e0f3f47
1 changed files with 6 additions and 4 deletions
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src/class.c
+6 -4
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@@ -26,16 +26,18 @@ union mt_ptr {
mrb_func_t func;
};
#define MT_KEY_P(k) (((k)>>2) != 0)
#define MT_KEY_SHIFT 2
#define MT_KEY_MASK ((1<<2)-1)
#define MT_KEY_P(k) (((k)>>MT_KEY_SHIFT) != 0)
#define MT_FUNC_P 1
#define MT_NOARG_P 2
#define MT_EMPTY 0
#define MT_DELETED 1
#define MT_KEY(sym, flags) ((sym)<<2|(flags))
#define MT_KEY(sym, flags) ((sym)<<MT_KEY_SHIFT|(flags))
#define MT_FLAGS(func_p, noarg_p) ((func_p)?MT_FUNC_P:0)|((noarg_p)?MT_NOARG_P:0)
#define MT_KEY_SYM(k) ((k)>>2)
#define MT_KEY_FLG(k) ((k)&3)
#define MT_KEY_SYM(k) ((k)>>MT_KEY_SHIFT)
#define MT_KEY_FLG(k) ((k)&MT_KEY_MASK)
/* method table structure */
typedef struct mt_tbl {