File: src\Workspaces\SharedUtilitiesAndExtensions\Compiler\Core\Utilities\Matcher.cs
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Project: src\src\Workspaces\Core\Portable\Microsoft.CodeAnalysis.Workspaces.csproj (Microsoft.CodeAnalysis.Workspaces)
// 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;
 
namespace Microsoft.CodeAnalysis.Shared.Utilities;
 
internal sealed class Matcher
{
    /// <summary>
    /// Matcher equivalent to (m*)
    /// </summary>
    public static Matcher<T> Repeat<T>(Matcher<T> matcher)
        => Matcher<T>.Repeat(matcher);
 
    /// <summary>
    /// Matcher equivalent to (m+)
    /// </summary>
    public static Matcher<T> OneOrMore<T>(Matcher<T> matcher)
        => Matcher<T>.OneOrMore(matcher);
 
    /// <summary>
    /// Matcher equivalent to (m_1|m_2|...|m_n)
    /// </summary>
    public static Matcher<T> Choice<T>(params Matcher<T>[] matchers)
        => Matcher<T>.Choice(matchers);
 
    /// <summary>
    /// Matcher equivalent to (m_1 ... m_n)
    /// </summary>
    public static Matcher<T> Sequence<T>(params Matcher<T>[] matchers)
        => Matcher<T>.Sequence(matchers);
 
    /// <summary>
    /// Matcher that matches an element if the provide predicate returns true.
    /// </summary>
    public static Matcher<T> Single<T>(Func<T, bool> predicate, string description)
        => Matcher<T>.Single(predicate, description);
}