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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 EnableKeywordRecommender : AbstractSyntacticSingleKeywordRecommender
{
public EnableKeywordRecommender()
: base(SyntaxKind.EnableKeyword, isValidInPreprocessorContext: true)
{
}
protected override bool IsValidContext(int position, CSharpSyntaxContext context, CancellationToken cancellationToken)
{
var previousToken1 = context.TargetToken;
var previousToken2 = previousToken1.GetPreviousToken(includeSkipped: true);
// # nullable |
// # nullable e|
if (previousToken1.Kind() == SyntaxKind.NullableKeyword &&
previousToken2.Kind() == SyntaxKind.HashToken)
{
return true;
}
var previousToken3 = previousToken2.GetPreviousToken(includeSkipped: true);
return
// # pragma warning |
// # pragma warning e|
previousToken1.Kind() == SyntaxKind.WarningKeyword &&
previousToken2.Kind() == SyntaxKind.PragmaKeyword &&
previousToken3.Kind() == SyntaxKind.HashToken;
}
}
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