Function addReporter

unittests/catch.hpp:7628–7647

    IReporterRegistry::~IReporterRegistry() = default;

    void addReporter( IStreamingReporterPtr& existingReporter, IStreamingReporterPtr&& additionalReporter ) {

        if( !existingReporter ) {
            existingReporter = std::move( additionalReporter );
            return;
        }

        MultipleReporters* multi = nullptr;

        if( existingReporter->isMulti() ) {
            multi = static_cast<MultipleReporters*>( existingReporter.get() );
        }
        else {
            auto newMulti = std::unique_ptr<MultipleReporters>( new MultipleReporters );
            newMulti->add( std::move( existingReporter ) );
            multi = newMulti.get();
            existingReporter = std::move( newMulti );
        }
        multi->add( std::move( additionalReporter ) );
    }

} // end namespace Catch
// end catch_interfaces_reporter.cpp