SOURCE_FILE
  FN
    VISIBILITY
      CRATE_KW "crate"
    WHITESPACE " "
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "main"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE " "
        R_CURLY "}"
  WHITESPACE "\n"
  STRUCT
    STRUCT_KW "struct"
    WHITESPACE " "
    NAME
      IDENT "S"
    WHITESPACE " "
    RECORD_FIELD_LIST
      L_CURLY "{"
      WHITESPACE " "
      RECORD_FIELD
        VISIBILITY
          CRATE_KW "crate"
        WHITESPACE " "
        NAME
          IDENT "field"
        COLON ":"
        WHITESPACE " "
        PATH_TYPE
          PATH
            PATH_SEGMENT
              NAME_REF
                IDENT "u32"
      WHITESPACE " "
      R_CURLY "}"
  WHITESPACE "\n"
  STRUCT
    STRUCT_KW "struct"
    WHITESPACE " "
    NAME
      IDENT "T"
    TUPLE_FIELD_LIST
      L_PAREN "("
      TUPLE_FIELD
        VISIBILITY
          CRATE_KW "crate"
        WHITESPACE " "
        PATH_TYPE
          PATH
            PATH_SEGMENT
              NAME_REF
                IDENT "u32"
      R_PAREN ")"
    SEMICOLON ";"
  WHITESPACE "\n"
