Support enum unit variants as map keys (#37)

2 files changed, 14 insertions, 4 deletions

diff --git a/src/de/mod.rs b/src/de/mod.rs
index 3d8b508..62da6a5 100644
--- a/src/de/mod.rs
+++ b/src/de/mod.rs
@@ -654,6 +654,18 @@ impl<'de> de::Deserializer<'de> for ParsableStringDeserializer<'de> {
         self.0.into_deserializer().deserialize_any(visitor)
     }
 
+    fn deserialize_enum<V>(
+        self,
+        _: &'static str,
+        _: &'static [&'static str],
+        visitor: V,
+    ) -> Result<V::Value>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_enum(LevelDeserializer(Level::Flat(self.0)))
+    }
+
     forward_to_deserialize_any! {
         map
         struct
@@ -670,7 +682,6 @@ impl<'de> de::Deserializer<'de> for ParsableStringDeserializer<'de> {
         tuple_struct
         identifier
         tuple
-        enum
         ignored_any
     }
 
diff --git a/src/ser.rs b/src/ser.rs
index 4fbacd9..50d3688 100644
--- a/src/ser.rs
+++ b/src/ser.rs
@@ -524,14 +524,13 @@ impl ser::Serializer for StringSerializer {
         Err(Error::Unsupported)
     }
 
-    /// Returns an error.
     fn serialize_unit_variant(
         self,
         _name: &'static str,
         _variant_index: u32,
-        _variant: &'static str,
+        variant: &'static str,
     ) -> Result<Self::Ok> {
-        Err(Error::Unsupported)
+        Ok(variant.to_string())
     }
 
     /// Returns an error.