Enum error Error codes returned when using rules Synopsis Declared in header <boost/url/grammar/error.hpp> enum error : int; Members Name Description need_more More input is needed to match the rule mismatch The rule did not match the input. end_of_range A rule reached the end of a range leftover Leftover input remaining after match. invalid A rule encountered unrecoverable invalid input. out_of_range An integer overflowed during parsing. syntax An unspecified syntax error was found.