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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.Threading;
using Microsoft.CodeAnalysis.CSharp.Extensions.ContextQuery;
namespace Microsoft.CodeAnalysis.CSharp.Completion.KeywordRecommenders;
internal class WarningsKeywordRecommender : AbstractSyntacticSingleKeywordRecommender
{
public WarningsKeywordRecommender()
: base(SyntaxKind.WarningsKeyword, isValidInPreprocessorContext: true)
{
}
protected override bool IsValidContext(int position, CSharpSyntaxContext context, CancellationToken cancellationToken)
{
var previousToken1 = context.TargetToken;
var previousToken2 = previousToken1.GetPreviousToken(includeSkipped: true);
var previousToken3 = previousToken2.GetPreviousToken(includeSkipped: true);
// # nullable enable |
// # nullable enable w|
return
(previousToken1.Kind() == SyntaxKind.EnableKeyword || previousToken1.Kind() == SyntaxKind.DisableKeyword || previousToken1.Kind() == SyntaxKind.RestoreKeyword) &&
previousToken2.Kind() == SyntaxKind.NullableKeyword &&
previousToken3.Kind() == SyntaxKind.HashToken;
}
}
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