Method Next

pkg/sql/sem/tree/datum.go:1648–1666

Next implements the Datum interface.

(_ *EvalContext)

// Next implements the Datum interface.
func (d *DIPAddr) Next(_ *EvalContext) (Datum, bool) {
	// We will do one of a few things to get the Next IP address:
	//	- Increment IP address if we won't overflow the IP.
	//	- Increment mask and set the IP to min in family if we will overflow.
	//	- Jump up from IPv4 to IPv6 if we will overflow both IP and mask.
	if d.Family == ipaddr.IPv4family && d.Addr.Equal(dIPv4max) {
		if d.Mask == 32 {
			// Jump up IP family.
			return dMinIPv6Addr, true
		}
		// Increase mask size, wrap IPv4 IP address.
		return NewDIPAddr(DIPAddr{ipaddr.IPAddr{Family: ipaddr.IPv4family, Addr: dIPv4min, Mask: d.Mask + 1}}), true
	} else if d.Family == ipaddr.IPv6family && d.Addr.Equal(dIPv6max) {
		// Increase mask size, wrap IPv6 IP address.
		return NewDIPAddr(DIPAddr{ipaddr.IPAddr{Family: ipaddr.IPv6family, Addr: dIPv6min, Mask: d.Mask + 1}}), true
	}
	// Increment IP address.
	return NewDIPAddr(DIPAddr{ipaddr.IPAddr{Family: d.Family, Addr: d.Addr.Add(1), Mask: d.Mask}}), true
}

// IsMax implements the Datum interface.
func (d *DIPAddr) IsMax(_ *EvalContext) bool {