Feature/2024 12 create codec

[takapi327]

Implementation Details

If both Encoder and Decoder were needed, each had to be defined. With this modification, a new Codec has been added, allowing Encoder and Decoder to be defined together.

enum Status:
  case Active, InActive

-given Encoder[Status] = Encoder[Boolean].contramap {
-  case Status.Active   => true
-  case Status.InActive => false
-}

-given Decoder[Status] = Decoder[Boolean].map {
-  case true  => Status.Active
-  case false => Status.InActive
-}

+given Codec[Status] = Codec[Boolean].imap {
+  case true => Status.Active
+  case false => Status.InActive
+} {
+  case Status.Active   => true
+  case Status.InActive => false
+}

It can also be used in place of a Decoder or Encoder by building a Codec.

-given Decoder[City] = (Decoder[Int] *: Decoder[String] *: Decoder[Int]).to[City]
+given Codec[City] = (Codec[Int] *: Codec[String] *: Codec[Int]).to[City]

Pull Request Checklist

• Wrote unit and integration tests
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code formatting by scalafmt (sbt scalafmtAll command execution)
• Add copyright headers to new files

References