Ripper : The Ruby inner voice

A perfect ruby inner voice to see how programs are running behind the scene.

For example

irb(main):003:0> p Ripper.sexp("5 + 5")

[:program, [[:binary, [:@int, "5", [1, 0]], :+, [:@int, "5", [1, 4]]]]] => [:program, [[:binary, [:@int, "5", [1, 0]], :+, [:@int, "5", [1, 4]]]]]

and how it calls the reserved words

irb(main):007:0> p Ripper.sexp("puts")

[:program, [[:var_ref, [:@ident, "puts", [1, 0]]]]] => [:program, [[:var_ref, [:@ident, "puts", [1, 0]]]]]