Impl DekuWriter for Box<T>

Author: wcampbell0x2a

src/impls/boxed.rs

@@ -52,6 +52,18 @@ where
     }
 }
 
+impl<T, Ctx> DekuWriter<Ctx> for Box<T>
+where
+    T: DekuWriter<Ctx>,
+    Ctx: Copy,
+{
+    /// Write all `T`s to bits
+    fn to_writer<W: Write>(&self, writer: &mut Writer<W>, ctx: Ctx) -> Result<(), DekuError> {
+        self.as_ref().to_writer(writer, ctx)?;
+        Ok(())
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use no_std_io::io::Cursor;

tests/test_box.rs

@@ -0,0 +1,14 @@
+use deku::prelude::*;
+
+#[derive(DekuRead, DekuWrite)]
+struct TestStruct {
+    field: Box<u8>,
+}
+
+#[test]
+fn test_box_smoke_test() {
+    let test_data: &[u8] = &[0u8; 100];
+    let a = TestStruct::try_from(test_data).unwrap();
+    let new_bytes = a.to_bytes().unwrap();
+    assert_eq!(test_data, &*new_bytes);
+}