// 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;
using System.Collections.Generic;
 
namespace Microsoft.CodeAnalysis.Shared.Utilities;
 
internal abstract partial class Matcher<T>
{
    private sealed class SingleMatcher(Func<T, bool> predicate, string description) : Matcher<T>
    {
        public override bool TryMatch(IList<T> sequence, ref int index)
        {
            if (index < sequence.Count && predicate(sequence[index]))
            {
                index++;
                return true;
            }
 
            return false;
        }
 
        public override string ToString()
            => description;
    }
}