autocommit 2022-01-28 03:35:35 CET

src/utils/debug_fn.rs

@@ -0,0 +1,21 @@
+use std::fmt::{Debug, Formatter};
+
+pub fn debug_fn<F>(f: F) -> impl Debug
+where
+    F: Fn(&mut Formatter<'_>) -> std::fmt::Result,
+{
+    DebugFn { f }
+}
+
+struct DebugFn<F> {
+    f: F,
+}
+
+impl<F> Debug for DebugFn<F>
+where
+    F: Fn(&mut Formatter<'_>) -> std::fmt::Result,
+{
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        (self.f)(f)
+    }
+}