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Refactor set/unset string type flags

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Introduce `RSTR_SET_TYPE_FLAG` macro to set the specified string type flag and
clear the others.
This commit is contained in:
KOBAYASHI Shuji
2019-08-17 21:24:08 +09:00
parent 99715a2e62
commit caba5fef27
2 changed files with 20 additions and 35 deletions
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include/mruby/string.h
+10 -4
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@@ -34,6 +34,9 @@ struct RString {
} as;
};
#define RSTR_SET_TYPE_FLAG(s, type) (RSTR_UNSET_TYPE_FLAG(s), (s)->flags |= MRB_STR_##type)
#define RSTR_UNSET_TYPE_FLAG(s) ((s)->flags &= ~(MRB_STR_TYPE_MASK|MRB_STR_EMBED_LEN_MASK))
#define RSTR_EMBED_P(s) ((s)->flags & MRB_STR_EMBED)
#define RSTR_SET_EMBED_FLAG(s) ((s)->flags |= MRB_STR_EMBED)
#define RSTR_UNSET_EMBED_FLAG(s) ((s)->flags &= ~(MRB_STR_EMBED|MRB_STR_EMBED_LEN_MASK))
@@ -103,11 +106,14 @@ MRB_API mrb_int mrb_str_strlen(mrb_state*, struct RString*);
#define MRB_STR_SHARED 1
#define MRB_STR_FSHARED 2
#define MRB_STR_NOFREE 4
#define MRB_STR_POOL 8
#define MRB_STR_ASCII 16
#define MRB_STR_EMBED 32
#define MRB_STR_EMBED_LEN_MASK 0x7c0
#define MRB_STR_EMBED 8 /* type flags up to here */
#define MRB_STR_POOL 16 /* status flags from here */
#define MRB_STR_ASCII 32
#define MRB_STR_EMBED_LEN_SHIFT 6
#define MRB_STR_EMBED_LEN_BITSIZE 5
#define MRB_STR_EMBED_LEN_MASK (((1 << MRB_STR_EMBED_LEN_BITSIZE) - 1) << MRB_STR_EMBED_LEN_SHIFT)
#define MRB_STR_TYPE_MASK (MRB_STR_POOL - 1)
void mrb_gc_free_str(mrb_state*, struct RString*);