Anonymous Types in IDL4 #1135
Anonymous Types in IDL4 #1135
Conversation
This just uses the existing IDL2 support to enable using them in IDL4, but it's not know how good that support is. At the very least a new test will have to be made in tests/IDLv4.
|
Not all language mappings do support anonymous types, the IDL to C++11 language mapping doesn't support them because it is impossible to use IDL::traits for template meta programming when anonymous types are used in user IDL. Personally I was not in favor of adding them back to IDL4, there was a reason to deprecate them in the past. |
Language mappings based on IDL3 should use the IDL3 settings of tao_idl.
We can't do anything about that at this point, since they are widely used in XTypes and other DDS specs, and also in ROS2. |
:-( regret to hear that, it is a small effort to just add a typedef and use that. It would make template meta programming using IDL::traits so much easier for the user, especially in the DDS world where a lot of APIs are just templated APIs. |
+1
Similar in Ada where they create problems due to the language's particularly strong typing. |
|
We should make it possible for the user to enable IDL4 but disallow anonymous types so that any developments using TAO doesn't break Ada/C++11 parts of the same system later on |
To allow incompatible backends to avoid having to deal with anonymous types when using IDL4.
|
Alright now it should be possible to override the IDL4 anonymous behavior from the backend or the command line the same as with IDL3. |
|
When you tested this I am ok |
No description provided.