Replacing compiler implementation, Python/Perl
==============================================

Your project is to replace the entire Pleasant compiler with an interpreted
version, written either in Python or Perl.

This means that your Makefile will no longer need to do any compilation (you
can leave the compilation target there with a null rule), and that you will
need to modify the Makefile's test target to use your code. Otherwise, you
should preserve the structure of the program, which means that you must use
recursive descent for your parsing. 

The challenges here are two-fold: 1) obviously, this project takes the most rewriting
since you have to rewrite everything into your unrelated implementation language; and
2) you will have to deal with lexer differences; it probably is not very feasible to
use mmap(), and more importantly perhaps, you will have to deal with Unicode issues.