SOURCE_FILE@0..91
  FN@0..90
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..6
      IDENT@3..6 "foo"
    PARAM_LIST@6..8
      L_PAREN@6..7 "("
      R_PAREN@7..8 ")"
    WHITESPACE@8..9 " "
    BLOCK_EXPR@9..90
      L_CURLY@9..10 "{"
      WHITESPACE@10..15 "\n    "
      LET_STMT@15..25
        LET_KW@15..18 "let"
        WHITESPACE@18..19 " "
        WILDCARD_PAT@19..20
          UNDERSCORE@19..20 "_"
        WHITESPACE@20..21 " "
        EQ@21..22 "="
        WHITESPACE@22..23 " "
        PATH_EXPR@23..24
          PATH@23..24
            PATH_SEGMENT@23..24
              NAME_REF@23..24
                IDENT@23..24 "a"
        SEMICOLON@24..25 ";"
      WHITESPACE@25..30 "\n    "
      LET_STMT@30..43
        LET_KW@30..33 "let"
        WHITESPACE@33..34 " "
        WILDCARD_PAT@34..35
          UNDERSCORE@34..35 "_"
        WHITESPACE@35..36 " "
        EQ@36..37 "="
        WHITESPACE@37..38 " "
        PATH_EXPR@38..42
          PATH@38..42
            PATH@38..39
              PATH_SEGMENT@38..39
                NAME_REF@38..39
                  IDENT@38..39 "a"
            COLON2@39..41 "::"
            PATH_SEGMENT@41..42
              NAME_REF@41..42
                IDENT@41..42 "b"
        SEMICOLON@42..43 ";"
      WHITESPACE@43..48 "\n    "
      LET_STMT@48..65
        LET_KW@48..51 "let"
        WHITESPACE@51..52 " "
        WILDCARD_PAT@52..53
          UNDERSCORE@52..53 "_"
        WHITESPACE@53..54 " "
        EQ@54..55 "="
        WHITESPACE@55..56 " "
        PATH_EXPR@56..64
          PATH@56..64
            PATH_SEGMENT@56..64
              COLON2@56..58 "::"
              NAME_REF@58..59
                IDENT@58..59 "a"
              GENERIC_ARG_LIST@59..64
                COLON2@59..61 "::"
                L_ANGLE@61..62 "<"
                TYPE_ARG@62..63
                  PATH_TYPE@62..63
                    PATH@62..63
                      PATH_SEGMENT@62..63
                        NAME_REF@62..63
                          IDENT@62..63 "b"
                R_ANGLE@63..64 ">"
        SEMICOLON@64..65 ";"
      WHITESPACE@65..70 "\n    "
      LET_STMT@70..88
        LET_KW@70..73 "let"
        WHITESPACE@73..74 " "
        WILDCARD_PAT@74..75
          UNDERSCORE@74..75 "_"
        WHITESPACE@75..76 " "
        EQ@76..77 "="
        WHITESPACE@77..78 " "
        MACRO_CALL@78..87
          PATH@78..84
            PATH_SEGMENT@78..84
              NAME_REF@78..84
                IDENT@78..84 "format"
          BANG@84..85 "!"
          TOKEN_TREE@85..87
            L_PAREN@85..86 "("
            R_PAREN@86..87 ")"
        SEMICOLON@87..88 ";"
      WHITESPACE@88..89 "\n"
      R_CURLY@89..90 "}"
  WHITESPACE@90..91 "\n"