feat(abigen): add provided derives for call and event enums (#721)

* feat(abigen): add provided derives for call and event enums

* chore: update CHANGELOG

CHANGELOG.md

@@ -23,6 +23,8 @@
 
 ## ethers-contract-abigen
 
+- Add provided `event_derives` to call and event enums as well
+  [#721](https://github.com/gakonst/ethers-rs/pull/721).
 - Implement snowtrace and polygonscan on par with the etherscan integration
   [#666](https://github.com/gakonst/ethers-rs/pull/666).
 

ethers-contract/ethers-contract-abigen/src/contract/events.rs

@@ -61,13 +61,15 @@ impl Context {
             .map(|e| expand_struct_name(e, self.event_aliases.get(&e.abi_signature()).cloned()))
             .collect::<Vec<_>>();
 
-        let enum_name = self.expand_event_enum_name();
-
         let ethers_core = ethers_core_crate();
         let ethers_contract = ethers_contract_crate();
 
+        // use the same derives as for events
+        let derives = util::expand_derives(&self.event_derives);
+        let enum_name = self.expand_event_enum_name();
+
         quote! {
-            #[derive(Debug, Clone, PartialEq, Eq, #ethers_contract::EthAbiType)]
+            #[derive(Debug, Clone, PartialEq, Eq, #ethers_contract::EthAbiType, #derives)]
             pub enum #enum_name {
                 #(#variants(#variants)),*
             }

ethers-contract/ethers-contract-abigen/src/contract/methods.rs

@@ -105,11 +105,14 @@ impl Context {
         let ethers_core = ethers_core_crate();
         let ethers_contract = ethers_contract_crate();
 
+        // use the same derives as for events
+        let derives = util::expand_derives(&self.event_derives);
         let enum_name = self.expand_calls_enum_name();
+
         Ok(quote! {
             #struct_def_tokens
 
-           #[derive(Debug, Clone, PartialEq, Eq, #ethers_contract::EthAbiType)]
+           #[derive(Debug, Clone, PartialEq, Eq, #ethers_contract::EthAbiType, #derives)]
             pub enum #enum_name {
                 #(#variant_names(#struct_names)),*
             }