SOURCE_FILE@0..63
  FN@0..62
    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..62
      L_CURLY@10..11 "{"
      WHITESPACE@11..15 "\n   "
      LET_STMT@15..60
        LET_KW@15..18 "let"
        WHITESPACE@18..19 " "
        IDENT_PAT@19..22
          NAME@19..22
            IDENT@19..22 "foo"
        WHITESPACE@22..23 " "
        EQ@23..24 "="
        WHITESPACE@24..25 " "
        CLOSURE_EXPR@25..59
          PARAM_LIST@25..56
            PIPE@25..26 "|"
            PARAM@26..29
              IDENT_PAT@26..29
                NAME@26..29
                  IDENT@26..29 "bar"
            COMMA@29..30 ","
            WHITESPACE@30..31 " "
            PARAM@31..39
              IDENT_PAT@31..34
                NAME@31..34
                  IDENT@31..34 "baz"
              COLON@34..35 ":"
              WHITESPACE@35..36 " "
              PATH_TYPE@36..39
                PATH@36..39
                  PATH_SEGMENT@36..39
                    NAME_REF@36..39
                      IDENT@36..39 "Baz"
            COMMA@39..40 ","
            WHITESPACE@40..41 " "
            PARAM@41..55
              IDENT_PAT@41..44
                NAME@41..44
                  IDENT@41..44 "qux"
              COLON@44..45 ":"
              WHITESPACE@45..46 " "
              PATH_TYPE@46..55
                PATH@46..55
                  PATH@46..49
                    PATH_SEGMENT@46..49
                      NAME_REF@46..49
                        IDENT@46..49 "Qux"
                  COLON2@49..51 "::"
                  PATH_SEGMENT@51..55
                    NAME_REF@51..55
                      IDENT@51..55 "Quux"
            PIPE@55..56 "|"
          WHITESPACE@56..57 " "
          TUPLE_EXPR@57..59
            L_PAREN@57..58 "("
            R_PAREN@58..59 ")"
        SEMICOLON@59..60 ";"
      WHITESPACE@60..61 "\n"
      R_CURLY@61..62 "}"
  WHITESPACE@62..63 "\n"