AspectWithVersion.hpp

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#ifndef DART_COMMON_ASPECTWITHVERSION_HPP_
#define DART_COMMON_ASPECTWITHVERSION_HPP_
 
#include "dart/common/detail/AspectWithVersion.hpp"
 
namespace dart {
namespace common {
 
//==============================================================================
template <
    class DerivedT,
    typename StateDataT,
    class CompositeT = Composite,
    void (*updateState)(DerivedT*) = &detail::NoOp<DerivedT*> >
using AspectWithState = detail::AspectWithState<
    CompositeTrackingAspect<CompositeT>,
    DerivedT,
    StateDataT,
    CompositeT,
    updateState>;
 
//==============================================================================
template <
    class DerivedT,
    typename PropertiesDataT,
    class CompositeT = Composite,
    void (*updateProperties)(DerivedT*) = &detail::NoOp<DerivedT*> >
using AspectWithVersionedProperties = detail::AspectWithVersionedProperties<
    CompositeTrackingAspect<CompositeT>,
    DerivedT,
    PropertiesDataT,
    CompositeT,
    updateProperties>;
 
//==============================================================================
template <
    class DerivedT,
    typename StateDataT,
    typename PropertiesDataT,
    class CompositeT = Composite,
    void (*updateState)(DerivedT*) = &detail::NoOp<DerivedT*>,
    void (*updateProperties)(DerivedT*) = updateState>
class AspectWithStateAndVersionedProperties
  : public detail::AspectWithVersionedProperties<
        AspectWithState<DerivedT, StateDataT, CompositeT, updateState>,
        DerivedT,
        PropertiesDataT,
        CompositeT,
        updateProperties>
{
public:
  using Derived = DerivedT;
  using StateData = StateDataT;
  using PropertiesData = PropertiesDataT;
  using CompositeType = CompositeT;
  using State = common::Aspect::MakeState<StateData>;
  using Properties = common::Aspect::MakeProperties<PropertiesData>;
  constexpr static void (*UpdateState)(Derived*) = updateState;
  constexpr static void (*UpdateProperties)(Derived*) = updateProperties;
 
  using AspectStateImpl
      = common::AspectWithState<Derived, StateData, CompositeType, updateState>;
 
  using AspectPropertiesImpl = detail::AspectWithVersionedProperties<
      AspectStateImpl,
      Derived,
      PropertiesData,
      CompositeType,
      updateProperties>;
 
  using AspectImpl = AspectWithStateAndVersionedProperties<
      DerivedT,
      StateDataT,
      PropertiesDataT,
      CompositeT,
      updateState,
      updateProperties>;
 
  AspectWithStateAndVersionedProperties(
      const AspectWithStateAndVersionedProperties&)
      = delete;
 
  AspectWithStateAndVersionedProperties(
      const StateData& state = StateData(),
      const PropertiesData& properties = PropertiesData())
    : AspectPropertiesImpl(properties, state)
  {
    // Do nothing
  }
 
  AspectWithStateAndVersionedProperties(
      const PropertiesData& properties, const StateData& state = StateData())
    : AspectPropertiesImpl(properties, state)
  {
    // Do nothing
  }
 
  // Documentation inherited
  std::unique_ptr<Aspect> cloneAspect() const override
  {
    return std::make_unique<Derived>(this->getState(), this->getProperties());
  }
};
 
//==============================================================================
//
// These namespace-level definitions are required to enable ODR-use of static
// constexpr member variables.
//
// See this StackOverflow answer: http://stackoverflow.com/a/14396189/111426
//
template <
    class DerivedT,
    typename StateDataT,
    typename PropertiesDataT,
    class CompositeT,
    void (*updateState)(DerivedT*),
    void (*updateProperties)(DerivedT*)>
constexpr void (*AspectWithStateAndVersionedProperties<
                DerivedT,
                StateDataT,
                PropertiesDataT,
                CompositeT,
                updateState,
                updateProperties>::UpdateState)(DerivedT*);
 
//==============================================================================
template <
    class DerivedT,
    typename StateDataT,
    typename PropertiesDataT,
    class CompositeT,
    void (*updateState)(DerivedT*),
    void (*updateProperties)(DerivedT*)>
constexpr void (*AspectWithStateAndVersionedProperties<
                DerivedT,
                StateDataT,
                PropertiesDataT,
                CompositeT,
                updateState,
                updateProperties>::UpdateProperties)(DerivedT*);
 
} // namespace common
} // namespace dart
 
#endif // DART_COMMON_ASPECTWITHVERSION_HPP_