Function selectors::parser::parse_type_selector

fn parse_type_selector<'i, 't, P, Impl, S>(
    parser: &P,
    input: &mut Parser<'i, 't>,
    state: SelectorParsingState,
    sink: &mut S
) -> Result<bool, ParseError<'i, P::Error>>where
    P: Parser<'i, Impl = Impl>,
    Impl: SelectorImpl,
    S: Push<Component<Impl>>,

• Err(()): Invalid selector, abort
• Ok(false): Not a type selector, could be something else. input was not consumed.
• Ok(true): Length 0 (*|*), 1 (*|E or ns|*) or 2 (|E or ns|E)