Function selectors::parser::parse_one_simple_selector

fn parse_one_simple_selector<'i, 't, P, Impl>(
    parser: &P,
    input: &mut Parser<'i, 't>,
    state: SelectorParsingState
) -> Result<Option<SimpleSelectorParseResult<Impl>>, ParseError<'i, P::Error>>where
    P: Parser<'i, Impl = Impl>,
    Impl: SelectorImpl,

Parse a simple selector other than a type selector.

• Err(()): Invalid selector, abort
• Ok(None): Not a simple selector, could be something else. input was not consumed.
• Ok(Some(_)): Parsed a simple selector or pseudo-element