|
// 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 EventDeclarationStructureProvider : AbstractSyntaxNodeStructureProvider<EventDeclarationSyntax>
{
protected override void CollectBlockSpans(
SyntaxToken previousToken,
EventDeclarationSyntax eventDeclaration,
ArrayBuilder<BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(eventDeclaration, spans, options);
// fault tolerance
if (eventDeclaration.AccessorList == null ||
eventDeclaration.AccessorList.IsMissing ||
eventDeclaration.AccessorList.OpenBraceToken.IsMissing ||
eventDeclaration.AccessorList.CloseBraceToken.IsMissing)
{
return;
}
SyntaxNodeOrToken current = eventDeclaration;
var nextSibling = current.GetNextSibling();
// Check IsNode to compress blank lines after this node if it is the last child of the parent.
//
// Full events are grouped together with event field definitions in Metadata as Source.
var compressEmptyLines = options.IsMetadataAsSource
&& (!nextSibling.IsNode || nextSibling.Kind() is SyntaxKind.EventDeclaration or SyntaxKind.EventFieldDeclaration);
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
eventDeclaration,
eventDeclaration.Identifier,
compressEmptyLines: compressEmptyLines,
autoCollapse: true,
type: BlockTypes.Member,
isCollapsible: true));
}
}
|