==================
Transform Loop
==================

transform i in [1, 2, 3] {
  (output i)
}

---

(root
  (statement
    (transform
      (identifier)
      (expression
        (value
          (list
            (expression
              (value
                (integer)))
            (expression
              (value
                (integer)))
            (expression
              (value
                (integer))))))
      (statement
        (expression
          (tool
            (expression
              (identifier))))))))

==================
Nested Transform Loop
==================

transform i in [['one'] ['two'] ['three']] {
  transform j in i {
    j += 'foobar'
  }
}

---

(root
  (statement
    (transform
      (identifier)
      (expression
        (value
          (list
            (expression
              (value
                (list
                  (expression
                    (value
                      (string))))))
            (expression
              (value
                (list
                  (expression
                    (value
                      (string))))))
            (expression
              (value
                (list
                  (expression
                    (value
                      (string)))))))))
      (statement
        (transform
          (identifier)
          (expression
            (identifier))
          (statement
            (assignment
              (identifier)
              (assignment_operator)
              (statement
                (expression
                  (value
                    (string)))))))))))