using System;

using System.Diagnostics;

namespace NumSharp.Backends

{

public class BackendFactory

{

[DebuggerNonUserCode]

public static TensorEngine GetEngine(BackendType backendType = BackendType.Default)

{

switch (backendType)

{

case BackendType.Default:

return EngineCache<DefaultEngine>.Value;

default:

throw new ArgumentOutOfRangeException(nameof(backendType), backendType, null);

}

}

[DebuggerNonUserCode]

public static TensorEngine GetEngine<T>() where T : TensorEngine, new()

{

return EngineCache<T>.Value;

}

private static class EngineCache<T> where T : TensorEngine, new()

{

public static readonly T Value = new T();

}

}

}