Simplify debug printing of the buddy allocator.

1 files changed, 16 insertions, 0 deletions

diff --git a/crates/utils/src/lib.rs b/crates/utils/src/lib.rs
new file mode 100644
index 0000000..248227a
--- /dev/null
+++ b/crates/utils/src/lib.rs
@@ -0,0 +1,16 @@
+#![no_std]
+
+use core::fmt;
+
+/// Creates an ad-hoc `Debug` instance.
+pub fn debug(f: impl Fn(&mut fmt::Formatter) -> fmt::Result) -> impl fmt::Debug {
+    struct Debug<F>(F);
+
+    impl<F: Fn(&mut fmt::Formatter) -> fmt::Result> fmt::Debug for Debug<F> {
+        fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+            (self.0)(fmt)
+        }
+    }
+
+    Debug(f)
+}