Class IndexTracker

compiler/cpp/tests/catch/catch.hpp:6246–6294

    };

    class IndexTracker : public TrackerBase {
        int m_size;
        int m_index;
    public:
        IndexTracker( NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent, int size )
        :   TrackerBase( nameAndLocation, ctx, parent ),
            m_size( size ),
            m_index( -1 )
        {}
        virtual ~IndexTracker();

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

        static IndexTracker& acquire( TrackerContext& ctx, NameAndLocation const& nameAndLocation, int size ) {
            IndexTracker* tracker = CATCH_NULL;

            ITracker& currentTracker = ctx.currentTracker();
            if( ITracker* childTracker = currentTracker.findChild( nameAndLocation ) ) {
                assert( childTracker );
                assert( childTracker->isIndexTracker() );
                tracker = static_cast<IndexTracker*>( childTracker );
            }
            else {
                tracker = new IndexTracker( nameAndLocation, ctx, &currentTracker, size );
                currentTracker.addChild( tracker );
            }

            if( !ctx.completedCycle() && !tracker->isComplete() ) {
                if( tracker->m_runState != ExecutingChildren && tracker->m_runState != NeedsAnotherRun )
                    tracker->moveNext();
                tracker->open();
            }

            return *tracker;
        }

        int index() const { return m_index; }

        void moveNext() {
            m_index++;
            m_children.clear();
        }

        virtual void close() CATCH_OVERRIDE {
            TrackerBase::close();
            if( m_runState == CompletedSuccessfully && m_index < m_size-1 )
                m_runState = Executing;
        }
    };

    inline ITracker& TrackerContext::startRun() {
        m_rootTracker = new SectionTracker( NameAndLocation( "{root}", CATCH_INTERNAL_LINEINFO ), *this, CATCH_NULL );