Exchanging Sources Between Clean and Haskell: A Double-Edged Front End for the Clean Compiler

The functional programming languages Clean and Haskell have been around for over two decades. Over time, both languages have developed a large body of useful libraries and come with interesting language features. It is the authors' primary goal to benefit from each other's evolutionary results by facilitating the exchange of sources between Clean and Haskell and study the forthcoming interactions between their distinct languages features. This is achieved by using the existing Clean compiler as starting point, and implementing a double-edged front end for this compiler: it supports both standard Clean 2.1 and (currently a large part of) standard Haskell 98.