I'm using Trifecta parser combinator library and my parser outputs instances of AST data type. I want each instance to have unique ID (which is simple Int). In Parsec I would create custom state a...

I'm experimenting with Trifecta for parsing a very simple functional language with Haskell-like layout syntax. I'm working off the Haddock docs and my experience with Parsec, because I couldn't fin...