SOURCE_FILE
  FN
    FN_KW "fn"
    WHITESPACE " "
    NAME
      IDENT "main"
    PARAM_LIST
      L_PAREN "("
      R_PAREN ")"
    WHITESPACE " "
    BLOCK_EXPR
      STMT_LIST
        L_CURLY "{"
        WHITESPACE "\n    "
        MACRO_EXPR
          MACRO_CALL
            PATH
              PATH_SEGMENT
                NAME_REF
                  IDENT "foo"
            BANG "!"
            WHITESPACE " "
            TOKEN_TREE
              L_PAREN "("
              WHITESPACE "\n        "
              IDENT "bar"
              COMMA ","
              WHITESPACE " "
              STRING "\"baz\""
              COMMA ","
              WHITESPACE " "
              INT_NUMBER "1"
              COMMA ","
              WHITESPACE " "
              FLOAT_NUMBER "2.0"
        WHITESPACE "\n    "
        R_CURLY "}"
  WHITESPACE " "
  COMMENT "//~ ERROR incorrect close delimiter"
  WHITESPACE "\n"
  ERROR
    R_CURLY "}"
  WHITESPACE "\n"
error 49: unmatched `}`
error 92: unmatched `}`
