SOURCE_FILE
  MODULE
    MOD_KW "mod"
    WHITESPACE " "
    NAME
      IDENT "c"
    WHITESPACE " "
    ITEM_LIST
      L_CURLY "{"
      WHITESPACE "\n    "
      FN
        FN_KW "fn"
        WHITESPACE " "
        NAME
          IDENT "foo"
        PARAM_LIST
          L_PAREN "("
          R_PAREN ")"
        WHITESPACE " "
        BLOCK_EXPR
          STMT_LIST
            L_CURLY "{"
            WHITESPACE "\n    "
            R_CURLY "}"
      WHITESPACE "\n    "
      STRUCT
        STRUCT_KW "struct"
        WHITESPACE " "
        NAME
          IDENT "S"
        WHITESPACE " "
        RECORD_FIELD_LIST
          L_CURLY "{"
          R_CURLY "}"
      WHITESPACE "\n"
      R_CURLY "}"
  WHITESPACE "\n\n"
  MODULE
    MOD_KW "mod"
    WHITESPACE " "
    NAME
      IDENT "d"
    WHITESPACE " "
    ITEM_LIST
      L_CURLY "{"
      WHITESPACE "\n    "
      ATTR
        POUND "#"
        BANG "!"
        L_BRACK "["
        META
          PATH
            PATH_SEGMENT
              NAME_REF
                IDENT "attr"
        R_BRACK "]"
      WHITESPACE "\n    "
      MODULE
        MOD_KW "mod"
        WHITESPACE " "
        NAME
          IDENT "e"
        SEMICOLON ";"
      WHITESPACE "\n    "
      MODULE
        MOD_KW "mod"
        WHITESPACE " "
        NAME
          IDENT "f"
        WHITESPACE " "
        ITEM_LIST
          L_CURLY "{"
          WHITESPACE "\n    "
          R_CURLY "}"
      WHITESPACE "\n"
      R_CURLY "}"
  WHITESPACE "\n"