Add Serialize/Deserialize for std::os::mikros::Errno

serde/src/de/impls.rs

@@ -3181,3 +3181,39 @@ where
         s.parse().map_err(Error::custom)
     }
 }
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(target_os = "mikros")]
+impl<'de> Deserialize<'de> for std::os::mikros::Errno {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        deserializer.deserialize_i32(ErrnoVisitor)
+    }
+}
+
+#[cfg(target_os = "mikros")]
+struct ErrnoVisitor;
+
+#[cfg(target_os = "mikros")]
+impl<'de> Visitor<'de> for ErrnoVisitor {
+    type Value = std::os::mikros::Errno;
+
+    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_str("errno")
+    }
+
+    fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
+    where
+        E: Error,
+    {
+        if let Ok(errno) = Errno::try_from(v) {
+            Ok(errno)
+        } else {
+            Err(E::invalid_value(Unexpected::Signed(v as i32), "errno"))
+        }
+    }
+}

serde/src/ser/impls.rs

@@ -1094,3 +1094,16 @@ atomic_impl! {
     AtomicI64 "64"
     AtomicU64 "64"
 }
+
+////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(target_os = "mikros")]
+impl Serialize for std::os::mikros::Errno {
+    #[inline]
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        (self as i32).serialize(serializer)
+    }
+}