Derive Default for enums (#2057)

* Derive `Default` for enums

* cargo fmt --all

Author: dishmaker

pkcs1/src/params.rs

@@ -25,17 +25,13 @@ const SHA_1_AI: AlgorithmIdentifierRef<'_> = AlgorithmIdentifierRef {
 /// [RFC 8017 Appendix 2.3]: https://datatracker.ietf.org/doc/html/rfc8017#appendix-A.2.3
 #[derive(Clone, Debug, Copy, PartialEq, Eq)]
 #[repr(u8)]
+#[derive(Default)]
 pub enum TrailerField {
     /// the only supported value (0xbc, default)
+    #[default]
     BC = 1,
 }
 
-impl Default for TrailerField {
-    fn default() -> Self {
-        Self::BC
-    }
-}
-
 impl<'a> DecodeValue<'a> for TrailerField {
     type Error = der::Error;
 

tls_codec/derive/tests/decode.rs

@@ -9,7 +9,9 @@ use tls_codec_derive::{TlsDeserialize, TlsDeserializeBytes, TlsSerialize, TlsSiz
     TlsDeserialize, TlsDeserializeBytes, Debug, PartialEq, Clone, Copy, TlsSize, TlsSerialize,
 )]
 #[repr(u16)]
+#[derive(Default)]
 pub enum ExtensionType {
+    #[default]
     Reserved = 0,
     Capabilities = 1,
     Lifetime = 2,
@@ -19,12 +21,6 @@ pub enum ExtensionType {
     SomethingElse = 500,
 }
 
-impl Default for ExtensionType {
-    fn default() -> Self {
-        Self::Reserved
-    }
-}
-
 #[derive(
     TlsDeserialize, TlsDeserializeBytes, Debug, PartialEq, TlsSerialize, TlsSize, Clone, Default,
 )]

x509-cert/src/certificate.rs

@@ -87,8 +87,10 @@ impl Profile for Raw {
 #[derive(Clone, Debug, Copy, PartialEq, Eq, Enumerated)]
 #[asn1(type = "INTEGER")]
 #[repr(u8)]
+#[derive(Default)]
 pub enum Version {
     /// Version 1 (default)
+    #[default]
     V1 = 0,
 
     /// Version 2
@@ -104,12 +106,6 @@ impl ValueOrd for Version {
     }
 }
 
-impl Default for Version {
-    fn default() -> Self {
-        Self::V1
-    }
-}
-
 /// X.509 `TbsCertificate` as defined in [RFC 5280 Section 4.1]
 pub type TbsCertificate = TbsCertificateInner<Rfc5280>;