Scala parser combinators vs ANTLR/Java generated parser?

Question

I am writing an expression parser for an app written mostly in Scala. I have built AST objects in Scala, and now need to write the parser. I have heard of Scala\'s built-in

Answer 1

Just been writing a parser for a home brew 8 bit CPU assembler.

I got so far with Antlr4 before feeling that there had to be a better way. I decided to have a go at Scala parser combinators and have to say that it is way more productive IMHO. However, I do know scala.