================================================================================
Fibonacci
================================================================================

fib = (i <int>) <int> {
	if i <= 1 {
		1
	} else {
		self(i - 1) + self(i - 2)
	}
}

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

(root
  (statement
    (statement_kind
      (assignment
        (identifier)
        (assignment_operator)
        (statement
          (statement_kind
            (expression
              (value
                (function
                  (identifier)
                  (type_specification
                    (type))
                  (type_specification
                    (type))
                  (block
                    (statement
                      (statement_kind
                        (if_else
                          (if
                            (expression
                              (logic
                                (expression
                                  (identifier))
                                (logic_operator)
                                (expression
                                  (value
                                    (integer)))))
                            (block
                              (statement
                                (statement_kind
                                  (expression
                                    (value
                                      (integer)))))))
                          (else
                            (block
                              (statement
                                (statement_kind
                                  (expression
                                    (math
                                      (expression
                                        (function_call
                                          (function_expression
                                            (identifier))
                                          (expression
                                            (math
                                              (expression
                                                (identifier))
                                              (math_operator)
                                              (expression
                                                (value
                                                  (integer)))))))
                                      (math_operator)
                                      (expression
                                        (function_call
                                          (function_expression
                                            (identifier))
                                          (expression
                                            (math
                                              (expression
                                                (identifier))
                                              (math_operator)
                                              (expression
                                                (value
                                                  (integer))))))))))))))))))))))))))