Function __action107

fn __action107(
    cx: &mut ParseCtxt<'_>,
    (_, lo, _): (Location, Location, Location),
    (_, _, _): (Location, Token, Location),
    (_, _, _): (Location, Token, Location),
    (_, hi, _): (Location, Location, Location),
) -> Result<BinOp, ParseError<Location, Token, UserParseError>>