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// 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;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Completion;
using Microsoft.CodeAnalysis.CSharp.Completion.Providers.DeclarationName;
using Microsoft.CodeAnalysis.CSharp.Extensions.ContextQuery;
using Microsoft.CodeAnalysis.CSharp.ExternalAccess.Pythia.Api;
using Microsoft.CodeAnalysis.Host.Mef;
namespace Microsoft.CodeAnalysis.CSharp.ExternalAccess.Pythia;
[ExportDeclarationNameRecommender(nameof(PythiaDeclarationNameRecommender)), Shared]
[ExtensionOrder(Before = nameof(DeclarationNameRecommender))]
[method: ImportingConstructor]
[method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
internal sealed class PythiaDeclarationNameRecommender([Import(AllowDefault = true)] Lazy<IPythiaDeclarationNameRecommenderImplementation>? implementation) : IDeclarationNameRecommender
{
private readonly Lazy<IPythiaDeclarationNameRecommenderImplementation>? _lazyImplementation = implementation;
public async Task<ImmutableArray<(string name, Glyph glyph)>> ProvideRecommendedNamesAsync(
CompletionContext completionContext,
Document document,
CSharpSyntaxContext syntaxContext,
NameDeclarationInfo nameInfo,
CancellationToken cancellationToken)
{
if (_lazyImplementation is null || nameInfo.PossibleSymbolKinds.IsEmpty)
return [];
var context = new PythiaDeclarationNameContext(syntaxContext);
var result = await _lazyImplementation.Value.ProvideRecommendationsAsync(context, cancellationToken).ConfigureAwait(false);
// We just pick the first possible symbol kind for glyph.
return result.SelectAsArray(
name => (name, NameDeclarationInfo.GetGlyph(NameDeclarationInfo.GetSymbolKind(nameInfo.PossibleSymbolKinds[0]), nameInfo.DeclaredAccessibility)));
}
}
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