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-rw-r--r--include/mruby/string.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/mruby/string.h b/include/mruby/string.h
index 05afc794e..f8a1fa7bd 100644
--- a/include/mruby/string.h
+++ b/include/mruby/string.h
@@ -55,6 +55,10 @@ struct RString {
#define RSTR_SET_SHARED_FLAG(s) ((s)->flags |= MRB_STR_SHARED)
#define RSTR_UNSET_SHARED_FLAG(s) ((s)->flags &= ~MRB_STR_SHARED)
+#define RSTR_NOFREE_P(s) ((s)->flags & MRB_STR_NOFREE)
+#define RSTR_SET_NOFREE_FLAG(s) ((s)->flags |= MRB_STR_NOFREE)
+#define RSTR_UNSET_NOFREE_FLAG(s) ((s)->flags &= ~MRB_STR_NOFREE)
+
#define mrb_str_ptr(s) ((struct RString*)(mrb_ptr(s)))
#define RSTRING(s) mrb_str_ptr(s)
#define RSTRING_PTR(s) RSTR_PTR(RSTRING(s))