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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt VS Tools.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
using System;
using System.Collections.Concurrent;
using System.Threading.Tasks;
namespace QtVsTools.VisualStudio
{
using ServiceType = Tuple<Type, Type>;
public interface IVsServiceProvider
{
I GetService<T, I>() where T : class where I : class;
Task<I> GetServiceAsync<T, I>() where T : class where I : class;
}
public static class VsServiceProvider
{
public static IVsServiceProvider Instance { get; set; }
static readonly ConcurrentDictionary<ServiceType, object> services
= new ConcurrentDictionary<ServiceType, object>();
public static I GetService<I>()
where I : class
{
return GetService<I, I>();
}
public static I GetService<T, I>()
where T : class
where I : class
{
if (Instance == null)
return null;
object serviceObj;
if (services.TryGetValue(new ServiceType(typeof(T), typeof(I)), out serviceObj))
return serviceObj as I;
var serviceInterface = Instance.GetService<T, I>();
services.TryAdd(new ServiceType(typeof(T), typeof(I)), serviceInterface);
return serviceInterface;
}
public static async Task<I> GetServiceAsync<I>()
where I : class
{
return await GetServiceAsync<I, I>();
}
public static async Task<I> GetServiceAsync<T, I>()
where T : class
where I : class
{
if (Instance == null)
return null;
object serviceObj;
if (services.TryGetValue(new ServiceType(typeof(T), typeof(I)), out serviceObj))
return serviceObj as I;
var serviceInterface = await Instance.GetServiceAsync<T, I>();
services.TryAdd(new ServiceType(typeof(T), typeof(I)), serviceInterface);
return serviceInterface;
}
}
}
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