Truffle/Source: major API revision - All source-related classes now in com.oracle.truffle.api.source - SourceFactory replaced with factory methods on Source - Revision, renaming, and documentation to methods on Source and SourceSection - NullSourceSection is now a utility class

function add(a, b) {
  return a + b;
}

function sub(a, b) {
  return a - b;
}

function foo(f) {
  println(f(40, 2));
}

function main() {
  foo(add);
  foo(sub);
}