97 lines
3.8 KiB
C#
97 lines
3.8 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using System.Composition;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.Host;
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using Microsoft.CodeAnalysis.Host.Mef;
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using Microsoft.CodeAnalysis.Shared.Utilities;
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namespace dnSpy.Roslyn.Internal.QuickInfo {
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[ExportLanguageServiceFactory(typeof(QuickInfoService), LanguageNames.CSharp), Shared]
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sealed class CSharpQuickInfoServiceFactory : ILanguageServiceFactory {
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readonly Lazy<IQuickInfoProvider, OrderableLanguageMetadata>[] quickInfoProviders;
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[ImportingConstructor]
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public CSharpQuickInfoServiceFactory([ImportMany] IEnumerable<Lazy<IQuickInfoProvider, OrderableLanguageMetadata>> quickInfoProviders) {
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this.quickInfoProviders = quickInfoProviders.Where(a => a.Metadata.Language == LanguageNames.CSharp).ToArray();
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}
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public ILanguageService CreateLanguageService(HostLanguageServices languageServices) =>
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new CSharpQuickInfoService(quickInfoProviders);
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}
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sealed class CSharpQuickInfoService : QuickInfoService {
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public override string Language => LanguageNames.CSharp;
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public CSharpQuickInfoService(Lazy<IQuickInfoProvider, OrderableLanguageMetadata>[] quickInfoProviders)
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: base(quickInfoProviders) {
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}
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}
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[ExportLanguageServiceFactory(typeof(QuickInfoService), LanguageNames.VisualBasic), Shared]
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sealed class VisualBasicQuickInfoServiceFactory : ILanguageServiceFactory {
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readonly Lazy<IQuickInfoProvider, OrderableLanguageMetadata>[] quickInfoProviders;
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[ImportingConstructor]
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public VisualBasicQuickInfoServiceFactory([ImportMany] IEnumerable<Lazy<IQuickInfoProvider, OrderableLanguageMetadata>> quickInfoProviders) {
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this.quickInfoProviders = quickInfoProviders.Where(a => a.Metadata.Language == LanguageNames.VisualBasic).ToArray();
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}
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public ILanguageService CreateLanguageService(HostLanguageServices languageServices) =>
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new VisualBasicQuickInfoService(quickInfoProviders);
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}
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sealed class VisualBasicQuickInfoService : QuickInfoService {
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public override string Language => LanguageNames.VisualBasic;
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public VisualBasicQuickInfoService(Lazy<IQuickInfoProvider, OrderableLanguageMetadata>[] quickInfoProviders)
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: base(quickInfoProviders) {
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}
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}
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abstract partial class QuickInfoService : ILanguageService {
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readonly IQuickInfoProvider[] quickInfoProviders;
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public abstract string Language { get; }
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protected QuickInfoService(Lazy<IQuickInfoProvider, OrderableLanguageMetadata>[] quickInfoProviders) {
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this.quickInfoProviders = ExtensionOrderer.Order(quickInfoProviders).Select(a => a.Value).ToArray();
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}
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public static QuickInfoService GetService(Document document) {
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if (document == null)
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throw new ArgumentNullException(nameof(document));
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return document.Project.LanguageServices.GetService<QuickInfoService>();
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}
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public async Task<QuickInfoItem> GetItemAsync(Document document, int position, CancellationToken cancellationToken = default(CancellationToken)) {
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foreach (var p in quickInfoProviders) {
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var item = await p.GetItemAsync(document, position, cancellationToken);
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if (item != null)
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return item;
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}
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return null;
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}
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}
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}
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