extension

The attribute is specified by the user. 

In TITAN the following three arguments are specified:. 

• internal
     is appended to the port type definition if all instances of a TTCN–3 port type are intended to be used for internal communication only (i.e. between two TTCN–3 test components).

• address
    is appended to the port type definition if the user wants to use address values in TTCN–3 port operations.

• done
     is appended to a function with runs on clause if the return value of that function must be retrieved after the corresponding component was stopped.

Related keywords:

• with
• override

• the optional override directive forces all contained types at all lower scopes to be forced to the specified attribute.

• the optional qualifier points out the entity for which the argument is valid.

• argument is a free-text string specifying the actual attribute.

Example:

type port Vnitrni_PT message { inout octetstring } with { extension "internal"}

The port called  Vnitrni_PT both sends and receives octetstrings and is used for internal communication only.

BNF definition of extension