// 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.IO;
 
namespace Microsoft.CodeAnalysis.Shared.Utilities;
 
internal abstract class TextReaderWithLength(int length) : TextReader
{
    public int Length { get; } = length;
 
    public override string ReadToEnd()
    {
#if NET
        return string.Create(Length, this, static (chars, state) => state.Read(chars));
#else
        var chars = new char[Length];
 
        var read = base.Read(chars, 0, Length);
 
        return new string(chars, 0, read);
#endif                
    }
}