// 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 IsKeywordRecommender : AbstractSyntacticSingleKeywordRecommender
{
    public IsKeywordRecommender()
        : base(SyntaxKind.IsKeyword)
    {
    }
 
    protected override bool IsValidContext(int position, CSharpSyntaxContext context, CancellationToken cancellationToken)
    {
        // cases:
        //    expr |
        return !context.IsInNonUserCode && context.IsIsOrAsOrSwitchOrWithExpressionContext;
    }
}