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kotlinlang

Kotlin_AST_design

I'm trying to come up with a good design for an AST, but the problem is that I need to construct it in two different ways from two different source data structures. I'm unsure how to make it readable and maintainable without a ton of boilerplate.
Does anyone have any tips on this?

Not sure if you have already looked into Kastree but they model Kotlin in an AST with an ADT of sealed classes.

<https://github.com/cretz/kastree/blob/master/ast/ast-common/src/main/kotlin/kastree/ast/Node.kt>

I know how to declare an ADT of course. The hard part is how to construct values of the AST or rather how to declare the AST in such a way that it will be easy to construct incrementally (reusing common code) and lazily from 2 different source data structures with non-local knowledge. Kastree is homomorphic to Psi and completely strict, that makes the whole thing much easier.