Class SectionTracker

compiler/cpp/tests/catch/catch.hpp:6192–6244

    };

    class SectionTracker : public TrackerBase {
        std::vector<std::string> m_filters;
    public:
        SectionTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent )
        :   TrackerBase( nameAndLocation, ctx, parent )
        {
            if( parent ) {
                while( !parent->isSectionTracker() )
                    parent = &parent->parent();

                SectionTracker& parentSection = static_cast<SectionTracker&>( *parent );
                addNextFilters( parentSection.m_filters );
            }
        }
        virtual ~SectionTracker();

        virtual bool isSectionTracker() const CATCH_OVERRIDE { return true; }

        static SectionTracker& acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation ) {
            SectionTracker* section = CATCH_NULL;

            ITracker& currentTracker = ctx.currentTracker();
            if( ITracker* childTracker = currentTracker.findChild( nameAndLocation ) ) {
                assert( childTracker );
                assert( childTracker->isSectionTracker() );
                section = static_cast<SectionTracker*>( childTracker );
            }
            else {
                section = new SectionTracker( nameAndLocation, ctx, &currentTracker );
                currentTracker.addChild( section );
            }
            if( !ctx.completedCycle() )
                section->tryOpen();
            return *section;
        }

        void tryOpen() {
            if( !isComplete() && (m_filters.empty() || m_filters[0].empty() ||  m_filters[0] == m_nameAndLocation.name ) )
                open();
        }

        void addInitialFilters( std::vector<std::string> const& filters ) {
            if( !filters.empty() ) {
                m_filters.push_back(""); // Root - should never be consulted
                m_filters.push_back(""); // Test Case - not a section filter
                m_filters.insert( m_filters.end(), filters.begin(), filters.end() );
            }
        }
        void addNextFilters( std::vector<std::string> const& filters ) {
            if( filters.size() > 1 )
                m_filters.insert( m_filters.end(), ++filters.begin(), filters.end() );
        }
    };

    class IndexTracker : public TrackerBase {
        int m_size;