// 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.Immutable;
 
namespace Roslyn.Utilities
{
    internal static class ComparerWithState
    {
        public static int CompareTo<T, S>(T first, T second, S state, ImmutableArray<Func<T, S, IComparable>> comparableMethods)
        {
            foreach (var comparableMethod in comparableMethods)
            {
                var comparison = comparableMethod(first, state).CompareTo(comparableMethod(second, state));
                if (comparison != 0)
                {
                    return comparison;
                }
            }
 
            return 0;
        }
 
        public static int CompareTo<T>(T first, T second, ImmutableArray<Func<T, IComparable>> comparableMethods)
        {
            foreach (var comparableMethod in comparableMethods)
            {
                var comparison = comparableMethod(first).CompareTo(comparableMethod(second));
                if (comparison != 0)
                {
                    return comparison;
                }
            }
 
            return 0;
        }
    }
}