MorphScala: safe class morphing with macros.

ABSTRACTThe goal of this paper is to design an easy type-safe metaprogramming API for Scala to capture generative metaprogramming tasks that depend on existing definitions to generate others, by writing meta-code as close as possible to regular Scala code. MorphScala, is a simple domain specific language based on the for-comprehension syntax, that introduces the class morphing metaprogramming technique to the Scala programming language. Class morphing is a flavor of compile time reflection (CTR) over fields or methods of classes and interfaces. The enabling technologies for MorphScala are Scala macros and quasiquotes that provide a powerful API for compile-time transformations.