chore: derive default for enums

ethers-core/src/types/block.rs

@@ -531,9 +531,10 @@ impl<'de> Deserialize<'de> for BlockId {
 }
 
 /// A block Number (or tag - "latest", "earliest", "pending")
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, Hash)]
 pub enum BlockNumber {
     /// Latest block
+    #[default]
     Latest,
     /// Finalized block accepted as canonical
     Finalized,
@@ -648,12 +649,6 @@ impl fmt::Display for BlockNumber {
     }
 }
 
-impl Default for BlockNumber {
-    fn default() -> Self {
-        BlockNumber::Latest
-    }
-}
-
 #[cfg(test)]
 #[cfg(not(feature = "celo"))]
 mod tests {

ethers-core/src/types/trace/filter.rs

@@ -112,7 +112,7 @@ pub struct Trace {
 }
 
 /// Response
-#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[derive(Debug, Default, Clone, PartialEq, Eq, Deserialize, Serialize)]
 #[serde(untagged)]
 pub enum Res {
     /// Call
@@ -120,15 +120,10 @@ pub enum Res {
     /// Create
     Create(CreateResult),
     /// None
+    #[default]
     None,
 }
 
-impl Default for Res {
-    fn default() -> Res {
-        Res::None
-    }
-}
-
 /// Action
 #[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
 #[serde(untagged, rename_all = "lowercase")]
@@ -198,9 +193,10 @@ pub struct Call {
 }
 
 /// Call type.
-#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Serialize)]
+#[derive(Debug, Default, Clone, PartialEq, Eq, Deserialize, Serialize)]
 pub enum CallType {
     /// None
+    #[default]
     #[serde(rename = "none")]
     None,
     /// Call
@@ -217,12 +213,6 @@ pub enum CallType {
     StaticCall,
 }
 
-impl Default for CallType {
-    fn default() -> CallType {
-        CallType::None
-    }
-}
-
 /// Create response
 #[derive(Debug, Clone, PartialEq, Eq, Default, Deserialize, Serialize)]
 pub struct Create {