valenterry / essa

Blacksmithing for Scala

Essa

Blacksmithing for Scala. Essa helps with transformations between types, e.g. case classes or sealed traits - without macros or reflection.

Usage

import essa.convert

case class A(x: Int, y: String)
case class B(x: Int, y: String)

val b: B = convert[B](A(42, "essa"))

Features

• Convert non-nested product types
• Convert arbitrary nested product types
• Sumtype support
• Fields order
• Facility to use multiple transformations consecutively
• TODO: General type conversion
• TODO: Better error messages
• TODO: Specific field conversion
• TODO: Primitive type to Tagged type / value class conversion
• TODO: Effect type F[_] support for conversions
• TODO: Enum support
• TODO: Replace typetagging via .isInstanceOf by shapeless type tagging
• TODO: Support for recursivly defined sumtypes