type t = | LexNull| LexBool of bool| LexInt of int| LexReal of float| LexString of string| LexName of string| LexLeftSquare| LexRightSquare| LexLeftDict| LexRightDict| LexStream of Pdf.stream| LexEndStream| LexObj| LexEndObj| LexR| StopLexing| LexNone
val string_of_token : t -> stringval string_of_tokens : t list -> stringval is_delimiter : char -> boolval is_not_whitespace : char -> boolval is_whitespace_or_delimiter : char -> boolval lex_item : string -> tval strings : bytes arrayval ignoreuntil : (char -> bool) -> Pdfio.input -> unitval lex_string : string -> t list