// 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.Collections.Generic;
 
namespace Microsoft.CodeAnalysis.Shared.Utilities
{
    internal partial class Matcher<T>
    {
        private class RepeatMatcher : Matcher<T>
        {
            private readonly Matcher<T> _matcher;
 
            public RepeatMatcher(Matcher<T> matcher)
                => _matcher = matcher;
 
            public override bool TryMatch(IList<T> sequence, ref int index)
            {
                while (_matcher.TryMatch(sequence, ref index))
                {
                }
 
                return true;
            }
 
            public override string ToString()
                => string.Format("({0}*)", _matcher);
        }
    }
}