C++11 port

[bernhardmgruber]

• removed custom unique_ptr

• merged overloads of TixiReadElements

• removed clashed enum prefixing, as enums can no longer clash

• removed option to generate scoped enums, they are generated by default now

• using std::unique_ptr instead of tigl::unique_ptr

• enabled deleted special member generation by default

• simplified a bit of generated code

• using using instead of typedef when generating exports into tigl namespace

• replaced std::cerr by LOG(ERROR) for non generator builds for cardinality error messages

• minOccurs and maxOccurs are now always interpreted

• updated test reference data

[bernhardmgruber]

You may want to verify this internally. I tested it on the public TiGL and it required some modifications, especially regarding enums, as they are now properly scoped and no prefixing is performed anymore.

[RlanderRISCSW]

Hi Bernhard, thanks for your contribution, and sorry for the late response. The changes look good, I still got two questions:

• is there a reason for using hardcoded 2147483647 instead of std::numeric_limits<int>::max()? Would be better understandable in my opinion, or alternativlely define a constant maxOccurs_unbounded?
• I recognized that the ChildWithArgsReader2 got removed. Is there another function for this now (e.g. used in CCPACSWingProfiles::ImportCPACS)?

[bernhardmgruber]

Thank you for the input!

• The hard coded int max is a result of interior behavior of the generator. But you are right, a constant would be much better here.
• There is no other function now, you are supposed to pass in a lambda now. I already applied this on the cpp11 branch in the DLR repo. You can then pull it from there at some point. See e.g.: https://github.com/DLR-SC/tigl/blob/cpp11/src/wing/CCPACSWingProfiles.cpp#L61

[bernhardmgruber]

Looks good to me now.

[RlanderRISCSW]

Perfect, works well, thanks a lot!