feat(codec): impl codec for Bytes (#856)

ethers-contract/tests/common/derive.rs

@@ -3,7 +3,7 @@ use ethers_contract::{
 };
 use ethers_core::{
     abi::{AbiDecode, AbiEncode, RawLog, Tokenizable},
-    types::{Address, H160, H256, I256, U128, U256},
+    types::{Address, Bytes, H160, H256, I256, U128, U256},
 };
 
 fn assert_tokenizeable<T: Tokenizable>() {}
@@ -560,3 +560,15 @@ fn can_derive_abi_codec_two_field() {
 
     assert_eq!(decoded_wrapped, tuple);
 }
+
+#[test]
+fn can_derive_ethcall_for_bytes() {
+    #[derive(Clone, Debug, Default, Eq, PartialEq, EthCall, EthDisplay)]
+    #[ethcall(name = "batch", abi = "batch(bytes[],bool)")]
+    pub struct BatchCall {
+        pub calls: Vec<Bytes>,
+        pub revert_on_fail: bool,
+    }
+
+    assert_ethcall::<BatchCall>();
+}

ethers-core/src/abi/codec.rs

@@ -2,7 +2,7 @@ use crate::{
     abi::{
         AbiArrayType, AbiError, AbiType, Detokenize, Token, Tokenizable, TokenizableItem, Tokenize,
     },
-    types::{Address, H256, U128, U256},
+    types::{Address, Bytes, H256, U128, U256},
 };
 
 /// Trait for ABI encoding
@@ -40,6 +40,7 @@ macro_rules! impl_abi_codec {
 
 impl_abi_codec!(
     Vec<u8>,
+    Bytes,
     Address,
     bool,
     String,
@@ -228,4 +229,11 @@ mod tests {
         .collect::<String>()
         };
     }
+
+    #[test]
+    fn bytes_codec() {
+        let bytes: Bytes = std::iter::repeat_with(random::<u8>).take(10).collect::<Vec<_>>().into();
+        let v = vec![bytes];
+        assert_codec(v);
+    }
 }