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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;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Shared.Extensions;
namespace Microsoft.CodeAnalysis.CSharp.Completion.KeywordRecommenders;
internal class EqualsKeywordRecommender : AbstractSyntacticSingleKeywordRecommender
{
public EqualsKeywordRecommender()
: base(SyntaxKind.EqualsKeyword)
{
}
protected override bool IsValidContext(int position, CSharpSyntaxContext context, CancellationToken cancellationToken)
{
// cases:
// join a in expr o1 |
// join a in expr o1 e|
var token = context.TargetToken;
var join = token.GetAncestor<JoinClauseSyntax>();
if (join == null)
{
return false;
}
var lastToken = join.LeftExpression.GetLastToken(includeSkipped: true);
// join a in expr |
if (join.LeftExpression.Width() > 0 &&
token == lastToken)
{
return true;
}
return false;
}
}
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