This directory contains a very simple example of a calculator in lrpar that
uses the generic parse tree output of lrpar. cargo build processes
src/calc.l and src/calc.y at compile-time. The compiled program then takes
input from stdin. You can type anything in here (though you'll only get useful
output for valid input!) -- parsing and lexing errors are reported.
Look at build.rs, src/calc.y, and src/main.rs to see how to use lrpar in
your project.