SOURCE_FILE@0..45
  FN_DEF@0..44
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..7
      IDENT@3..7 "main"
    PARAM_LIST@7..9
      L_PAREN@7..8 "("
      R_PAREN@8..9 ")"
    WHITESPACE@9..10 " "
    BLOCK_EXPR@10..44
      L_CURLY@10..11 "{"
      WHITESPACE@11..16 "\n    "
      RECORD_LIT@16..42
        PATH@16..17
          PATH_SEGMENT@16..17
            NAME_REF@16..17
              IDENT@16..17 "S"
        WHITESPACE@17..18 " "
        RECORD_FIELD_LIST@18..42
          L_CURLY@18..19 "{"
          WHITESPACE@19..20 " "
          RECORD_FIELD@20..40
            NAME_REF@20..25
              IDENT@20..25 "field"
            WHITESPACE@25..26 " "
            RANGE_EXPR@26..40
              DOT2@26..28 ".."
              CALL_EXPR@28..40
                PATH_EXPR@28..38
                  PATH@28..38
                    PATH@28..29
                      PATH_SEGMENT@28..29
                        NAME_REF@28..29
                          IDENT@28..29 "S"
                    COLON2@29..31 "::"
                    PATH_SEGMENT@31..38
                      NAME_REF@31..38
                        IDENT@31..38 "default"
                ARG_LIST@38..40
                  L_PAREN@38..39 "("
                  R_PAREN@39..40 ")"
          WHITESPACE@40..41 " "
          R_CURLY@41..42 "}"
      WHITESPACE@42..43 "\n"
      R_CURLY@43..44 "}"
  WHITESPACE@44..45 "\n"
error 25..25: expected COLON