355             Precedence::Assign | Precedence::Let | Precedence::Prefix => {  in rightmost_subexpression_precedence()
481         Expr::Assign(_) => fixup.previous_operator <= Precedence::Assign,  in scan_left()
483             Precedence::Assign => fixup.previous_operator <= Precedence::Assign,  in scan_left()
487         Expr::Range(e) => e.start.is_none() || fixup.previous_operator < Precedence::Assign,  in scan_left()
501         Precedence::Assign | Precedence::Compare => precedence <= fixup.next_operator,  in scan_right()
513         Expr::Assign(e) => {  in scan_right()
520             let right_fixup = fixup.rightmost_subexpression_fixup(false, false, Precedence::Assign);  in scan_right()
524                 Precedence::Assign,  in scan_right()
569             let right_needs_group = binop_prec != Precedence::Assign  in scan_right()
628                         Precedence::Assign | Precedence::Range => 0,  in scan_right()
634                     (Scan::Bailout, Precedence::Assign | Precedence::Range) => false,  in scan_right()
665                 Precedence::Assign if precedence > Precedence::Assign => Scan::Fail,  in scan_right()
682                 Precedence::Assign if precedence > Precedence::Assign => Scan::Fail,  in scan_right()
763             Precedence::Assign | Precedence::Range if precedence == Precedence::Range => Scan::Fail,  in scan_right()