From dcb6ae6dc14684a670adaffc1c682e48c403a7d9 Mon Sep 17 00:00:00 2001
From: Gary Guo <gary@garyguo.net>
Date: Sun, 7 May 2023 12:15:37 +0100
Subject: [PATCH] Add a dbg macro to the print utility

---
 src/print.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/print.rs b/src/print.rs
index 26c16a9..fc6d9ac 100644
--- a/src/print.rs
+++ b/src/print.rs
@@ -49,3 +49,22 @@ macro_rules! eprint {
         let _ = core::write!($crate::print::StderrPrinter, $($arg)*);
     })
 }
+
+#[macro_export]
+macro_rules! dbg {
+    () => {
+        $crate::eprintln!("[{}:{}]", ::core::file!(), ::core::line!())
+    };
+    ($val:expr $(,)?) => {
+        match $val {
+            tmp => {
+                $crate::eprintln!("[{}:{}] {} = {:#?}",
+                    ::core::file!(), ::core::line!(), ::core::stringify!($val), &tmp);
+                tmp
+            }
+        }
+    };
+    ($($val:expr),+ $(,)?) => {
+        ($($crate::dbg!($val)),+,)
+    };
+}