#ANNOTATIONS IN JAVA HOW TO#

There are two parts to the AnnotationScript interpreter: the parser and the evaluator. (In fact, it’s a great stepping stone for implementing your own LISP and gain that nerd cred rite of passage for yourself as well.

#ANNOTATIONS IN JAVA HOW TO#

I googled around a bit and found a blog post by Peter Norvig where he explained, step by step, how to implement LISP in Python. Also, 11 is the ‘crazy number’ (het gekkengetal) in Dutch tradition, which seemed appropriate. You don’t want to rack up that cyclomatic complexity, after all. I decided to end at because twelve levels of nesting felt like enough to me. I decided to start with because as Dijkstra so eloquently explained, all numbering should start at zero. The only drawback is that I had to define an annotation for each level of nesting, which means that there would be a limit to how deeply a program could be nested.

So without further ado, here are Hello World and FizzBuzz: package nl. import nl. import nl. ( 'println' ) ( ''Hello world!'' ) public class HelloWorld Now, almost ten years later, I’m finally ready to announce AnnotationScript! My answer has always been “no” – until now. So, ever since I decided to grow one myself in 2011, naturally, people asked me if I was going to create one, too. In 2008, a story went viral that the creators of successful programming languages all have beards ( here’s a summary about that from 2012). The ridiculous properties of MetaScript.The limiting restrictions of anotations.This story is going to be a rollercoaster, so I’ve decided to split it up so you can catch your breath between loopings. It’s available on GitHub.įor the why and the how, read on! Table of contents I have created a programming language whose syntax is expressed entirely in Java annotations. AnnotationScript: abusing Java annotations to the extreme

Annotations in java