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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.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.FindSymbols.Finders;
internal sealed class EventSymbolReferenceFinder : AbstractMethodOrPropertyOrEventSymbolReferenceFinder<IEventSymbol>
{
protected override bool CanFind(IEventSymbol symbol)
=> true;
protected sealed override ValueTask<ImmutableArray<ISymbol>> DetermineCascadedSymbolsAsync(
IEventSymbol symbol,
Solution solution,
FindReferencesSearchOptions options,
CancellationToken cancellationToken)
{
var backingFields = symbol.ContainingType.GetMembers()
.OfType<IFieldSymbol>()
.Where(f => symbol.Equals(f.AssociatedSymbol))
.ToImmutableArray<ISymbol>();
var associatedNamedTypes = symbol.ContainingType.GetTypeMembers()
.WhereAsArray(n => symbol.Equals(n.AssociatedSymbol))
.CastArray<ISymbol>();
return new(backingFields.Concat(associatedNamedTypes));
}
protected sealed override async Task DetermineDocumentsToSearchAsync<TData>(
IEventSymbol symbol,
HashSet<string>? globalAliases,
Project project,
IImmutableSet<Document>? documents,
Action<Document, TData> processResult,
TData processResultData,
FindReferencesSearchOptions options,
CancellationToken cancellationToken)
{
await FindDocumentsAsync(project, documents, processResult, processResultData, cancellationToken, symbol.Name).ConfigureAwait(false);
await FindDocumentsWithGlobalSuppressMessageAttributeAsync(project, documents, processResult, processResultData, cancellationToken).ConfigureAwait(false);
}
protected sealed override void FindReferencesInDocument<TData>(
IEventSymbol symbol,
FindReferencesDocumentState state,
Action<FinderLocation, TData> processResult,
TData processResultData,
FindReferencesSearchOptions options,
CancellationToken cancellationToken)
{
FindReferencesInDocumentUsingSymbolName(symbol, state, processResult, processResultData, cancellationToken);
}
}
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