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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.Syntax;
using Microsoft.CodeAnalysis.PooledObjects;
using Microsoft.CodeAnalysis.Structure;
namespace Microsoft.CodeAnalysis.CSharp.Structure;
internal class SimpleLambdaExpressionStructureProvider : AbstractSyntaxNodeStructureProvider<SimpleLambdaExpressionSyntax>
{
protected override void CollectBlockSpans(
SyntaxToken previousToken,
SimpleLambdaExpressionSyntax lambdaExpression,
ArrayBuilder<BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// fault tolerance
if (lambdaExpression.Body.IsMissing)
{
return;
}
if (lambdaExpression.Body is not BlockSyntax lambdaBlock ||
lambdaBlock.OpenBraceToken.IsMissing ||
lambdaBlock.CloseBraceToken.IsMissing)
{
return;
}
var lastToken = CSharpStructureHelpers.GetLastInlineMethodBlockToken(lambdaExpression);
if (lastToken.Kind() == SyntaxKind.None)
{
return;
}
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
lambdaExpression,
lambdaExpression.ArrowToken,
lastToken,
compressEmptyLines: false,
autoCollapse: false,
type: BlockTypes.Expression,
isCollapsible: true));
}
}
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