I have a pattern that repeats for several member functions that looks like this:
int myClass::abstract_one(int sig1)
{
try {
return _original->abstract_one(sig1);
} catch (std::exception& err) {
handleException(err);
} catch (...) {
handleException();
}
}
bool myClass::abstract_two(int sig2)
{
try {
return _original->abstract_two(sig2);
} catch (std::exception& err) {
handleException(err);
} catch (...) {
handleException();
}
}
[...]
int myClass::abstract_n(bool sig3a, short sig3b)
{
try {
return _original->abstract_n(sig3a, sig3b);
} catch (std::exception& err) {
handleException(err);
} catch (...) {
handleException();
}
}
Where abstract one through n are methods of a pure virtual abstract interface for which myClass and _original are concrete implementations.
I don't like that this pattern repeats in the code and would like to find a way to eliminate the repeating try / catch pattern and code as a single abstraction, but I can't think of a good way to do this in C++ without macros. I would think that there is a way with templates to do this better.
Please suggest a clean way to refactor this code to abstract out the repeated pattern.