ModuleProvides.cs

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using System;
using System.Collections.Immutable;
using System.Linq;
 
using IKVM.CoreLib.System;
 
namespace IKVM.CoreLib.Modules
{
 
 
    internal readonly struct ModuleProvides : IComparable<ModuleProvides>
    {
 
        readonly string _service;
        readonly ImmutableArray<string> _providers;
 
        public ModuleProvides(string service, ImmutableArray<string> providers)
        {
            _service = service ?? throw new ArgumentNullException(nameof(service));
            _providers = providers;
        }
 
        public string Service => _service;
 
        public ImmutableArray<string> Providers => _providers;
 
        public int CompareTo(ModuleProvides other)
        {
            // service
            int c = _service.CompareTo(other._service);
            if (c != 0)
                return c;
 
            // targets
            return LexicographicListComparer<string, StringComparer, ImmutableArray<string>>.Default.Compare(_providers, other._providers);
        }
 
        public override bool Equals(object? obj)
        {
            return obj is ModuleProvides other && Equals(other);
        }
 
        public bool Equals(ModuleProvides other)
        {
            return _service == other._service && _providers.SequenceEqual(other._providers);
        }
 
        public override int GetHashCode()
        {
            var hc = new HashCode();
            hc.Add(_service);
 
            foreach (var t in _providers)
                hc.Add(t);
 
            return hc.ToHashCode();
        }
 
    }
 
}