// 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.Host
{
    /// <summary>
    /// Per language services provided by the host environment.
    /// </summary>
    public sealed class LanguageServices
    {
        private readonly HostLanguageServices _services;
        // This ensures a single instance of this type associated with each HostLanguageServices.
        [Obsolete("Do not call directly.  Use HostLanguageServices.ProjectServices to acquire an instance")]
        internal LanguageServices(HostLanguageServices services)
        {
            _services = services;
        }
 
        public SolutionServices SolutionServices => _services.WorkspaceServices.SolutionServices;
 
        [Obsolete("Only use to implement obsolete public API")]
        internal HostLanguageServices HostLanguageServices => _services;
 
        /// <inheritdoc cref="HostLanguageServices.Language"/>
        public string Language
            => _services.Language;
 
        /// <inheritdoc cref="HostLanguageServices.GetService"/>
        public TLanguageService? GetService<TLanguageService>() where TLanguageService : ILanguageService
            => _services.GetService<TLanguageService>();
 
        /// <inheritdoc cref="HostLanguageServices.GetRequiredService"/>
        public TLanguageService GetRequiredService<TLanguageService>() where TLanguageService : ILanguageService
            => _services.GetRequiredService<TLanguageService>();
    }
}