The TODO list contains some items concerning the CIDR/INET datatype.
* %Prevent INET cast to CIDR if the unmasked bits are not zero, or zero the bits
I added a function for this cast (which zeroes the bits) but then the
opr_sanity regression test failed because there is a cast from INET -> CIDR
but the other way round is considered to be binary compatible.
Actually both types are not binary compatible, since they have a
type component that is either 0 or 1, depending on whether it is of type
INET or CIDR.
If nobody objects, I'll send in a patch that includes a cast function for
the other way round as well.
* Allow INET + INT4 to increment the host part of the address, or throw an error on overflow
Once at it I wonder how much arithmetic these types need?
What about functions to get/set a specific byte, for example:
inet_get_byte('192.168.1.1'::inet, 0) returns 1
inet_get_byte('192.168.1.1'::inet, 1) returns 1
inet_get_byte('192.168.1.1'::inet, 2) returns 168
inet_get_byte('192.168.1.1'::inet, 3) returns 192
and inet_set_byte('192.168.1.1'::inet, 3, 128) returns '128.168.1.1'
Which other functions have been missing here in the past?
Joachim