test-type.gb

types:

    complex {
        fields:
            num r;
            num i;

        operations:
            complex +(complex a, complex b) {
                vars:
                    complex result;
                process:
                    result.r = a.r + b.r;
                    result.i = a.i + b.i;
                    return result;
            }
    }

vars:
  complex x;
  complex y;


process:
  x.r = 10;
  x.i = 20;

  y = x + x;

  print("x.r: " , x.r);
  print("x.i: " , x.i);

  print("y.r: " , y.r);
  print("y.i: " , y.i);