From dc03601ac08248eab5defdb0bbee2df3585a21f6 Mon Sep 17 00:00:00 2001
From: IntoTheNight <munir@munir.fun>
Date: Sun, 9 Jul 2023 16:30:16 +0530
Subject: [PATCH] add a shrimple macro

---
 kernel/src/device_tree.rs | 16 ++++++++--------
 kernel/src/utils.rs       | 11 +++++++++++
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/kernel/src/device_tree.rs b/kernel/src/device_tree.rs
index cffa0698..51d822e6 100644
--- a/kernel/src/device_tree.rs
+++ b/kernel/src/device_tree.rs
@@ -53,26 +53,26 @@ impl DeviceTree {
     }
 }
 use crate::utils::TAB;
-
+use crate::tab;
 impl fmt::Display for DeviceTree {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         writeln!(f)?;
         for (device_type, devices) in &self.devices {
-            writeln!(f, "\r{TAB}{}/\r", device_type)?;
+            writeln!(f, "\r{}{}/\r", tab!(1), device_type)?;
             for device in devices {
-                writeln!(f, "{TAB}{TAB}{}/\r", device.name)?;
+                writeln!(f, "{}{}/\r", tab!(2), device.name)?;
                 for attr in &device.attributes {
-                    writeln!(f, "{TAB}{TAB}{TAB}{}\r", attr)?;
+                    writeln!(f, "{}{}\r", tab!(3), attr)?;
                 }
                 for child in &device.children {
-                    writeln!(f, "{TAB}{TAB}{TAB}{}\r", child.name)?;
+                    writeln!(f, "{}{}\r", tab!(4), child.name)?;
                     for attr in &child.attributes {
-                        writeln!(f, "{TAB}{TAB}{TAB}{TAB}{}\r", attr)?;
+                        writeln!(f, "{}{}\r", tab!(4), attr)?;
                     }
                     for child in &child.children {
-                        writeln!(f, "{TAB}{TAB}{TAB}{TAB}{}\r", child.name)?;
+                        writeln!(f, "{}{}\r", tab!(4), child.name)?;
                         for attr in &child.attributes {
-                            writeln!(f, "{TAB}{TAB}{TAB}{TAB}{TAB}{}\r", attr)?;
+                            writeln!(f, "{}{}\r", tab!(5), attr)?;
                         }
                     }
                 }
diff --git a/kernel/src/utils.rs b/kernel/src/utils.rs
index 405bf7e8..e62fbbc0 100644
--- a/kernel/src/utils.rs
+++ b/kernel/src/utils.rs
@@ -3,3 +3,14 @@
 
 /// Used when tab `\t` in hardware is not known and we will default to two spaces
 pub const TAB: &str = "  ";
+
+
+// NOTE: this only reduces the code duplication in source code not in generated code!
+// Written by Yours Truly: Munir
+/// A simple macro to reduce code duplication when we use TAB internally
+#[macro_export]
+macro_rules! tab {
+    ($num:expr) => { 
+        TAB.repeat($num)
+    }
+}
\ No newline at end of file