GpuState.h

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#pragma once
#if defined(INCLUDED_BY_FACTORY) && defined(__linux__)
#include "../Fusion/FusionState.h"
 
namespace Simulators::Private
{
class GpuState : public FusionState
{
  public:
    explicit GpuState(std::shared_ptr<ISimulator> immediate) : FusionState(std::move(immediate))
    {
    }
 
    unsigned GetGateFusionMaxQubits() const override
    {
        switch (GetSimulationType())
        {
        case SimulationType::kStatevector:
            return GpuLibrary::GetInstance()->HasStatevectorMatrixAPI() ? 3 : 0;
        case SimulationType::kDensityMatrix:
        case SimulationType::kMatrixProductState:
        case SimulationType::kMatrixProductOperator:
            return 2;
        default:
            return 0;
        }
    }
 
  protected:
    bool UsesDestructiveStateStorage() const override
    {
        return GetSimulationType() == SimulationType::kStatevector;
    }
};
} // namespace Simulators::Private
#endif