// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#nullable enable

namespace Microsoft.CodeAnalysis.Shared.Extensions;

internal static class AccessibilityUtilities
{
    public static Accessibility Minimum(Accessibility accessibility1, Accessibility accessibility2)
    {
        if (accessibility1 == Accessibility.Private || accessibility2 == Accessibility.Private)
        {
            return Accessibility.Private;
        }

        if (accessibility1 == Accessibility.ProtectedAndInternal || accessibility2 == Accessibility.ProtectedAndInternal)
        {
            return Accessibility.ProtectedAndInternal;
        }

        if (accessibility1 == Accessibility.Protected || accessibility2 == Accessibility.Protected)
        {
            return Accessibility.Protected;
        }

        if (accessibility1 == Accessibility.Internal || accessibility2 == Accessibility.Internal)
        {
            return Accessibility.Internal;
        }

        if (accessibility1 == Accessibility.ProtectedOrInternal || accessibility2 == Accessibility.ProtectedOrInternal)
        {
            return Accessibility.ProtectedOrInternal;
        }

        return Accessibility.Public;
    }
}