rpn

Rpn.cyan

package metaobjectTest


@doc{*
  Annotation 'rpn' takes an expression in Reverse Polish Notation (RPN)
  in the attached DSL and evaluates it at compile-time. The annotation 
  is an expression of type Int. Only positive integer numbers are allowed 
  in the RPN expression.
  
  This is a demonstration metaobject.
  
*}
object Rpn

    func run {
        let value = @rpn{* 1 2 3 * + *};
        assert value = 7;
    }

end