happy-alex-example

Example for combining happy and alex

Features

• Custom parser monad and type-safe errors
• Use Lazy Text instead of String
• Source location information is attached to tokens and AST
• Nested comment parsing

Quick Start

cabal run happy-alex-example < expr.txt

Reference

• https://github.com/da-x/happy-alex-example
• https://github.com/jmoy/alexhappy/tree/master/startcode