SOURCE_FILE@0..22
  FN@0..21
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..6
      IDENT@3..6 "foo"
    PARAM_LIST@6..17
      L_PAREN@6..7 "("
      PARAM@7..13
        IDENT_PAT@7..8
          NAME@7..8
            IDENT@7..8 "x"
        COLON@8..9 ":"
        WHITESPACE@9..10 " "
        PATH_TYPE@10..13
          PATH@10..13
            PATH_SEGMENT@10..13
              NAME_REF@10..13
                IDENT@10..13 "i32"
      COMMA@13..14 ","
      WHITESPACE@14..15 " "
      PARAM@15..16
        IDENT_PAT@15..16
          NAME@15..16
            IDENT@15..16 "y"
      R_PAREN@16..17 ")"
    WHITESPACE@17..18 " "
    BLOCK_EXPR@18..21
      L_CURLY@18..19 "{"
      WHITESPACE@19..20 "\n"
      R_CURLY@20..21 "}"
  WHITESPACE@21..22 "\n"
error 16..16: missing type for function parameter