evaluate: fix maps with key and data concatenations

expr_evaluate_concat() is overloaded, it deals with two cases:

 #1 set key and data definitions, this case uses the special
    dynamically created concatenation datatype which is taken
    from the context.
 #2 set elements, this case iterates over the set key and data
    expressions that are components of the concatenation tuple,
    to fetch the corresponding datatype.

Add a new function to deal with case #1 specifically.

This patch is implicitly fixing up map that include arbitrary
concatenations. This is failing with a spurious error report such as:

 # cat bug.nft
 table x {
        map test {
                type ipv4_addr . inet_proto . inet_service : ipv4_addr . inet_service
        }
 }

 # nft -f bug.nft
 bug.nft:3:48-71: Error: datatype mismatch, expected concatenation of (IPv4 address, Internet protocol, internet network service), expression has type concatenation of (IPv4 address, internet network service)
                type ipv4_addr . inet_proto . inet_service : ipv4_addr . inet_service
                                                             ^^^^^^^^^^^^^^^^^^^^^^^^

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions