// 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.

namespace Microsoft.CodeAnalysis;

/// <summary>
/// The mode in which value is preserved.
/// </summary>
public enum PreservationMode
{
    /// <summary>
    /// The value is guaranteed to have the same contents across multiple accesses.
    /// </summary>
    PreserveValue = 0,

    /// <summary>
    /// The value is guaranteed to the same instance across multiple accesses.
    /// </summary>
    PreserveIdentity = 1
}

internal static class PreservationModeExtensions
{
    public static bool IsValid(this PreservationMode mode)
        => mode is >= PreservationMode.PreserveValue and <= PreservationMode.PreserveIdentity;
}