Function libreda_lefdef::lef_parser::try_read_pin

fn try_read_pin<I>(
    tk: &mut Tokenized<I, LefDefLexer>
) -> Result<Option<MacroPin>, LefDefParseError>where
    I: Iterator<Item = char> + PeekingNext,

Try to read a MACRO PIN definition. Returns None if there is none.