SOURCE_FILE
  FN
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "foo"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        R_CURLY "}"
  WHITESPACE " "
  ERROR
    UNSAFE_KW "unsafe"
  WHITESPACE " "
  ERROR
    L_CURLY "{"
    WHITESPACE " "
    R_CURLY "}"
  WHITESPACE " "
  FN
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "bar"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        R_CURLY "}"
  WHITESPACE "\n"
error 11: expected an item
error 18: expected an item
