================================================================================
Simple Structure
================================================================================

struct { answer = 42 }

--------------------------------------------------------------------------------

(root
  (statement
    (expression
      (value
        (structure
          (identifier)
          (statement
            (expression
              (value
                (integer)))))))))

================================================================================
Structure with Types
================================================================================

struct {
  answer <num> = 42
  stuff <[str]> = [ "some" "stuff" ]
}

--------------------------------------------------------------------------------

(root
  (statement
    (expression
      (value
        (structure
          (identifier)
          (type_definition
            (type))
          (statement
            (expression
              (value
                (integer))))
          (identifier)
          (type_definition
            (type
              (type)))
          (statement
            (expression
              (value
                (list
                  (expression
                    (value
                      (string)))
                  (expression
                    (value
                      (string))))))))))))

================================================================================
Nested Structures
================================================================================

struct {
  bar <Bar>
  baz <Baz>
}

--------------------------------------------------------------------------------

(root
  (statement
    (expression
      (value
        (structure
          (identifier)
          (type_definition
            (type
              (identifier)))
          (identifier)
          (type_definition
            (type
              (identifier))))))))