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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.Collections.Generic;
namespace Microsoft.CodeAnalysis.Shared.Utilities;
internal abstract partial class Matcher<T>
{
private sealed class ChoiceMatcher(params Matcher<T>[] matchers) : Matcher<T>
{
private readonly IEnumerable<Matcher<T>> _matchers = matchers;
public override bool TryMatch(IList<T> sequence, ref int index)
{
// we can't use .Any() here because ref parameters can't be used in lambdas
foreach (var matcher in _matchers)
{
if (matcher.TryMatch(sequence, ref index))
{
return true;
}
}
return false;
}
public override string ToString()
=> $"({string.Join("|", _matchers)})";
}
}
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