From f0bf96fe72a62207684aaa470847e61dc1df5a39 Mon Sep 17 00:00:00 2001
From: Vance Longwill <4891589+VanceLongwill@users.noreply.github.com>
Date: Wed, 31 Jan 2024 12:48:52 +0300
Subject: [PATCH] Add support for boxed values (#4)

---
 expunge/src/lib.rs       | 10 +++++++++-
 expunge/tests/expunge.rs | 15 +++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/expunge/src/lib.rs b/expunge/src/lib.rs
index b596a66..341b704 100644
--- a/expunge/src/lib.rs
+++ b/expunge/src/lib.rs
@@ -72,7 +72,7 @@
 
 use std::{
     collections::{HashMap, HashSet},
-    ops::{Deref, DerefMut},
+    ops::{Deref, DerefMut}, sync::Arc,
 };
 
 pub use expunge_derive::*;
@@ -242,6 +242,14 @@ where
     }
 }
 
+impl<T> Expunge for Box<T> where T: Expunge {
+    fn expunge(self) -> Self
+    where
+        Self: Sized {
+            Box::new((*self).expunge())
+    }
+}
+
 #[cfg(feature = "zeroize")]
 impl<T> Expunge for Secret<T>
 where
diff --git a/expunge/tests/expunge.rs b/expunge/tests/expunge.rs
index a138f8d..b8a5b3e 100644
--- a/expunge/tests/expunge.rs
+++ b/expunge/tests/expunge.rs
@@ -284,3 +284,18 @@ fn it_works_enum() {
     let expunged = item.expunge();
     assert_eq!(SensitiveItem::ZeroizableString("99".to_string()), expunged);
 }
+
+#[test]
+fn it_returns_boxed() {
+    #[derive(Expunge)]
+    struct Location {
+        #[expunge]
+        city: String,
+    }
+
+    let location = Box::new(Location {
+        city: "New York".to_string(),
+    });
+
+    let _: Box<Location> = location.expunge();
+}