Compiling java class from non-java file

Question

I have a set of ruby files where I have some string of type:

@something = [Whatever.new('1rabbit'), 
              Whatever.new('2rabbit'), 
              Whatever.new('3rabbit')]

I would like to parse out this information from the ruby file during compilation phase (javac run with maven - but i think it is no difference how javac is run), and create a .class enum of type:

public enum Something {
  1RABBIT,
  2RABBIT,
  3RABBIT
}

and store it into the target folder. Then, I can use this enum whatever I want (after this initial compilation). I looked into AnnotationProcessors, and bytecode generation, but the first requires annotations, and the second is done during runtime. And I cannot find out how to do it properly.

What is the correct tool to do this, and how?

Why don't you just use JSON and parse it into a Java program? — ack
– ack, Commented Dec 19, 2016 at 12:27
I have some legacy code in ruby files. My example is just a simplification — Artem Moskalev
– Artem Moskalev, Commented Dec 19, 2016 at 12:47

Timothy Truckle · Accepted Answer · 2016-12-19 12:30:16Z

2

mavens life cycle has a generate sources phase. There you cold use the exec-maven-plugin to run a script generating the enums.

answered Dec 19, 2016 at 12:30

Timothy Truckle

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