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// 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.
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Text;
namespace Microsoft.CodeAnalysis;
internal interface ITextAndVersionSource
{
/// <summary>
/// True if <see cref="SourceText"/> can be reloaded.
/// </summary>
bool CanReloadText { get; }
/// <summary>
/// Retrieves the underlying <see cref="TextLoader"/> if that's what this <see cref="ITextAndVersionSource"/> was
/// created from and still has access to.
/// </summary>
TextLoader? TextLoader { get; }
bool TryGetValue(LoadTextOptions options, [MaybeNullWhen(false)] out TextAndVersion value);
TextAndVersion GetValue(LoadTextOptions options, CancellationToken cancellationToken);
Task<TextAndVersion> GetValueAsync(LoadTextOptions options, CancellationToken cancellationToken);
bool TryGetVersion(LoadTextOptions options, out VersionStamp version);
/// <summary>
/// Retrieves just the version information from this instance. Cheaper than <see cref="GetValueAsync"/> when only
/// the version is needed, and avoiding loading the text is desirable.
/// </summary>
ValueTask<VersionStamp> GetVersionAsync(LoadTextOptions options, CancellationToken cancellationToken);
}
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