SOURCE_FILE
  FN
    ATTR
      POUND "#"
      L_BRACK "["
      META
        PATH
          PATH_SEGMENT
            NAME_REF
              IDENT "cfg"
        TOKEN_TREE
          L_PAREN "("
          IDENT "test"
          R_PAREN ")"
      R_BRACK "]"
    WHITESPACE "\n"
    ATTR
      POUND "#"
      L_BRACK "["
      META
        PATH
          PATH_SEGMENT
            NAME_REF
              IDENT "Ignore"
      R_BRACK "]"
    WHITESPACE "\n"
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "foo"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        R_CURLY "}"
  WHITESPACE "\n\n"
  MODULE
    ATTR
      POUND "#"
      L_BRACK "["
      META
        PATH
          PATH_SEGMENT
            NAME_REF
              IDENT "path"
        WHITESPACE " "
        EQ "="
        WHITESPACE " "
        LITERAL
          STRING "\"a.rs\""
      R_BRACK "]"
    WHITESPACE "\n"
    MOD_KW "mod"
    WHITESPACE " "
    NAME
      IDENT "b"
    SEMICOLON ";"
  WHITESPACE "\n"