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-rw-r--r--variable.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/variable.c b/variable.c
index 2465212..e924505 100644
--- a/variable.c
+++ b/variable.c
@@ -2732,6 +2732,22 @@ set_const_visibility(VALUE mod, int argc, const VALUE *argv,
rb_clear_constant_cache();
}
+void
+rb_deprecate_constant(VALUE mod, const char *name)
+{
+ rb_const_entry_t *ce;
+ ID id;
+ long len = strlen(name);
+
+ rb_frozen_class_p(mod);
+ if (!(id = rb_check_id_cstr(name, len, NULL)) ||
+ !(ce = rb_const_lookup(mod, id))) {
+ rb_name_err_raise("constant %2$s::%1$s not defined",
+ mod, rb_fstring_new(name, len));
+ }
+ ce->flag |= CONST_DEPRECATED;
+}
+
/*
* call-seq:
* mod.private_constant(symbol, ...) => mod