This document is intended to help the reader translate existing Prolog programs to Mercury. We assume that the reader is familiar with Prolog. This guide should be used in conjunction with the Mercury User's Guide and Reference Manuals.
If the Prolog code is quite declarative and does not make use of Prolog's non-logical constructions, the job of converting it to Mercury will usually be quite straight forward. However, if the Prolog program makes extensive use of non-logical constructions, conversion may be very difficult, and a direct transliteration may be impossible. Mercury code typically has a very different style to most Prolog code.