protected override void CollectBlockSpans(
SyntaxToken previousToken,
AccessorDeclarationSyntax accessorDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(accessorDeclaration, ref spans, options);
// fault tolerance
if (accessorDeclaration.Body == null ||
accessorDeclaration.Body.OpenBraceToken.IsMissing ||
accessorDeclaration.Body.CloseBraceToken.IsMissing)
{
return;
}
SyntaxNodeOrToken current = accessorDeclaration;
var nextSibling = current.GetNextSibling();
// Check IsNode to compress blank lines after this node if it is the last child of the parent.
//
// All accessor kinds are grouped together in Metadata as Source.
var compressEmptyLines = options.IsMetadataAsSource &&
(!nextSibling.IsNode || nextSibling.AsNode() is AccessorDeclarationSyntax);
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
accessorDeclaration,
accessorDeclaration.Keyword,
compressEmptyLines: compressEmptyLines,
autoCollapse: true,
type: BlockTypes.Member,
isCollapsible: true));
}
internal sealed override async Task <ImmutableArray <BlockSpan> > GetBlockSpansWorkerAsync(Document document, int position)
{
var root = await document.GetSyntaxRootAsync(CancellationToken.None);
var token = root.FindToken(position, findInsideTrivia: true);
var node = token.Parent.FirstAncestorOrSelf <TSyntaxNode>();
Assert.NotNull(node);
// We prefer ancestor nodes if the position is on the edge of the located node's span.
while (node.Parent is TSyntaxNode)
{
if ((position == node.SpanStart && position == node.Parent.SpanStart) ||
(position == node.Span.End && position == node.Parent.Span.End))
{
node = (TSyntaxNode)node.Parent;
}
else
{
break;
}
}
var outliner = CreateProvider();
using var actualRegions = TemporaryArray <BlockSpan> .Empty;
var options = BlockStructureOptions.From(document.Project);
// Calculate previousToken for tests the same way it is derived in production code
var previousToken = root.DescendantNodesAndTokens(descendIntoTrivia: true).TakeWhile(nodeOrToken => nodeOrToken != node).LastOrDefault(nodeOrToken => nodeOrToken.IsToken).AsToken();
outliner.CollectBlockSpans(previousToken, node, ref actualRegions.AsRef(), options, CancellationToken.None);
// TODO: Determine why we get null outlining spans.
return(actualRegions.ToImmutableAndClear());
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
DocumentationCommentTriviaSyntax documentationComment,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
var startPos = documentationComment.FullSpan.Start;
// The trailing newline is included in XmlDocCommentSyntax, so we need to strip it.
var endPos = documentationComment.SpanStart + documentationComment.ToString().TrimEnd().Length;
var span = TextSpan.FromBounds(startPos, endPos);
var bannerLength = options.MaximumBannerLength;
var bannerText = CSharpFileBannerFacts.Instance.GetBannerText(
documentationComment, bannerLength, cancellationToken);
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: span,
type: BlockTypes.Comment,
bannerText: bannerText,
autoCollapse: true));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
EventDeclarationSyntax eventDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(eventDeclaration, ref 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.IsKind(SyntaxKind.EventDeclaration) || nextSibling.IsKind(SyntaxKind.EventFieldDeclaration));
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
eventDeclaration,
eventDeclaration.Identifier,
compressEmptyLines: compressEmptyLines,
autoCollapse: true,
type: BlockTypes.Member,
isCollapsible: true));
}
public override async Task <FoldingRange[]?> HandleRequestAsync(FoldingRangeParams request, RequestContext context, CancellationToken cancellationToken)
{
var document = context.Document;
if (document == null)
{
return(null);
}
var blockStructureService = document.Project.LanguageServices.GetService <BlockStructureService>();
if (blockStructureService == null)
{
return(Array.Empty <FoldingRange>());
}
var options = BlockStructureOptions.From(document.Project);
var blockStructure = await blockStructureService.GetBlockStructureAsync(document, options, cancellationToken).ConfigureAwait(false);
if (blockStructure == null)
{
return(Array.Empty <FoldingRange>());
}
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
return(GetFoldingRanges(blockStructure, text));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
AnonymousMethodExpressionSyntax anonymousMethod,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// fault tolerance
if (anonymousMethod.Block.IsMissing ||
anonymousMethod.Block.OpenBraceToken.IsMissing ||
anonymousMethod.Block.CloseBraceToken.IsMissing)
{
return;
}
var lastToken = CSharpStructureHelpers.GetLastInlineMethodBlockToken(anonymousMethod);
if (lastToken.Kind() == SyntaxKind.None)
{
return;
}
var startToken = anonymousMethod.ParameterList != null
? anonymousMethod.ParameterList.GetLastToken(includeZeroWidth : true)
: anonymousMethod.DelegateKeyword;
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
anonymousMethod,
startToken,
lastToken,
compressEmptyLines: false,
autoCollapse: false,
type: BlockTypes.Expression,
isCollapsible: true));
}
internal override async Task <ImmutableArray <BlockSpan> > GetBlockSpansWorkerAsync(Document document, int position)
{
var outliningService = document.GetLanguageService <BlockStructureService>();
var options = BlockStructureOptions.From(document.Project);
return((await outliningService.GetBlockStructureAsync(document, options, CancellationToken.None)).Spans);
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
OperatorDeclarationSyntax operatorDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(operatorDeclaration, ref spans, options);
// fault tolerance
if (operatorDeclaration.Body == null ||
operatorDeclaration.Body.OpenBraceToken.IsMissing ||
operatorDeclaration.Body.CloseBraceToken.IsMissing)
{
return;
}
SyntaxNodeOrToken current = operatorDeclaration;
var nextSibling = current.GetNextSibling();
// Check IsNode to compress blank lines after this node if it is the last child of the parent.
//
// Whitespace between operators is collapsed in Metadata as Source.
var compressEmptyLines = options.IsMetadataAsSource &&
(!nextSibling.IsNode || nextSibling.IsKind(SyntaxKind.OperatorDeclaration));
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
operatorDeclaration,
operatorDeclaration.ParameterList.GetLastToken(includeZeroWidth: true),
compressEmptyLines: compressEmptyLines,
autoCollapse: true,
type: BlockTypes.Member,
isCollapsible: true));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
DestructorDeclarationSyntax destructorDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(destructorDeclaration, ref spans, options);
// fault tolerance
if (destructorDeclaration.Body == null ||
destructorDeclaration.Body.OpenBraceToken.IsMissing ||
destructorDeclaration.Body.CloseBraceToken.IsMissing)
{
return;
}
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
destructorDeclaration,
destructorDeclaration.ParameterList.GetLastToken(includeZeroWidth: true),
compressEmptyLines: false,
autoCollapse: true,
type: BlockTypes.Member,
isCollapsible: true));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
CompilationUnitSyntax compilationUnit,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(compilationUnit, ref spans, options);
// extern aliases and usings are outlined in a single region
var externsAndUsings = new List <SyntaxNode>();
externsAndUsings.AddRange(compilationUnit.Externs);
externsAndUsings.AddRange(compilationUnit.Usings);
externsAndUsings.Sort((node1, node2) => node1.SpanStart.CompareTo(node2.SpanStart));
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
externsAndUsings, compressEmptyLines: false, autoCollapse: true,
type: BlockTypes.Imports, isCollapsible: true));
if (compilationUnit.Usings.Count > 0 ||
compilationUnit.Externs.Count > 0 ||
compilationUnit.Members.Count > 0 ||
compilationUnit.AttributeLists.Count > 0)
{
CSharpStructureHelpers.CollectCommentBlockSpans(compilationUnit.EndOfFileToken.LeadingTrivia, ref spans);
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
RegionDirectiveTriviaSyntax regionDirective,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
var match = regionDirective.GetMatchingDirective(cancellationToken);
if (match != null)
{
// Always auto-collapse regions for Metadata As Source. These generated files only have one region at
// the top of the file, which has content like the following:
//
// #region Assembly System.Runtime, Version=4.2.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
// // C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\3.1.0\ref\netcoreapp3.1\System.Runtime.dll
// #endregion
//
// For other files, auto-collapse regions based on the user option.
var autoCollapse = options.IsMetadataAsSource || options.CollapseRegionsWhenCollapsingToDefinitions;
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: TextSpan.FromBounds(regionDirective.SpanStart, match.Span.End),
type: BlockTypes.PreprocessorRegion,
bannerText: GetBannerText(regionDirective),
autoCollapse: autoCollapse,
isDefaultCollapsed: !options.IsMetadataAsSource));
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
DocumentationCommentTriviaSyntax documentationComment,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// In metadata as source we want to treat documentation comments slightly differently, and collapse them
// to just "..." in front of the decalaration they're attached to. That happens in CSharpStructureHelper.CollectCommentBlockSpans
// so we don't need to do anything here
if (options.IsMetadataAsSource)
{
return;
}
var startPos = documentationComment.FullSpan.Start;
// The trailing newline is included in XmlDocCommentSyntax, so we need to strip it.
var endPos = documentationComment.SpanStart + documentationComment.ToString().TrimEnd().Length;
var span = TextSpan.FromBounds(startPos, endPos);
var bannerLength = options.MaximumBannerLength;
var bannerText = CSharpFileBannerFacts.Instance.GetBannerText(
documentationComment, bannerLength, cancellationToken);
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: span,
type: BlockTypes.Comment,
bannerText: bannerText,
autoCollapse: true));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
BlockSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
var parentKind = node.Parent.Kind();
// For most types of statements, just consider the block 'attached' to the
// parent node. That means we'll show the parent node header when doing
// things like hovering over the indent guide.
//
// This also works nicely as the close brace for these constructs will always
// align with the start of these statements.
if (IsNonBlockStatement(node.Parent) ||
parentKind == SyntaxKind.ElseClause)
{
var type = GetType(node.Parent);
if (type != null)
{
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: GetTextSpan(node),
hintSpan: GetHintSpan(node),
type: type,
autoCollapse: parentKind == SyntaxKind.LocalFunctionStatement && node.Parent.IsParentKind(SyntaxKind.GlobalStatement)));
}
}
// Nested blocks aren't attached to anything. Just collapse them as is.
// Switch sections are also special. Say you have the following:
//
// case 0:
// {
//
// }
//
// We don't want to consider the block parented by the case, because
// that would cause us to draw the following:
//
// case 0:
// | {
// |
// | }
//
// Which would obviously be wonky. So in this case, we just use the
// spanof the block alone, without consideration for the case clause.
if (parentKind is SyntaxKind.Block or SyntaxKind.SwitchSection)
{
var type = GetType(node.Parent);
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: node.Span,
hintSpan: node.Span,
type: type));
}
}
public override void CollectBlockSpans(
SyntaxTrivia trivia,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CollectBlockSpans(trivia.SyntaxTree, trivia, ref spans, cancellationToken);
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
EventFieldDeclarationSyntax eventFieldDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(eventFieldDeclaration, ref spans, options);
}
private static async Task <ImmutableArray <BlockSpan> > GetSpansFromWorkspaceAsync(
TestWorkspace workspace)
{
var hostDocument = workspace.Documents.First();
var document = workspace.CurrentSolution.GetDocument(hostDocument.Id);
var outliningService = document.GetLanguageService <BlockStructureService>();
var options = BlockStructureOptions.From(document.Project);
var structure = await outliningService.GetBlockStructureAsync(document, options, CancellationToken.None);
return(structure.Spans);
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
InitializerExpressionSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
if (node.Parent is InitializerExpressionSyntax)
{
// We have something like:
//
// new Dictionary<int, string>
// {
// ...
// {
// ...
// },
// ...
// }
//
// In this case, we want to collapse the "{ ... }," (including the comma).
var nextToken = node.CloseBraceToken.GetNextToken();
var end = nextToken.Kind() == SyntaxKind.CommaToken
? nextToken.Span.End
: node.Span.End;
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: TextSpan.FromBounds(node.SpanStart, end),
hintSpan: TextSpan.FromBounds(node.SpanStart, end),
type: BlockTypes.Expression));
}
else
{
// Parent is something like:
//
// new Dictionary<int, string> {
// ...
// }
//
// The collapsed textspan should be from the > to the }
//
// However, the hint span should be the entire object creation.
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: TextSpan.FromBounds(previousToken.Span.End, node.Span.End),
hintSpan: node.Parent.Span,
type: BlockTypes.Expression));
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
SwitchStatementSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: TextSpan.FromBounds((node.CloseParenToken != default) ? node.CloseParenToken.Span.End : node.Expression.Span.End, node.CloseBraceToken.Span.End),
hintSpan: node.Span,
type: BlockTypes.Conditional));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
ArrowExpressionClauseSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: TextSpan.FromBounds(previousToken.Span.End, node.Parent.Span.End),
hintSpan: node.Parent.Span,
type: BlockTypes.Nonstructural,
autoCollapse: !node.IsParentKind(SyntaxKind.LocalFunctionStatement)));
}
internal sealed override async Task <ImmutableArray <BlockSpan> > GetBlockSpansWorkerAsync(Document document, int position)
{
var root = await document.GetSyntaxRootAsync();
var trivia = root.FindTrivia(position, findInsideTrivia: true);
var outliner = CreateProvider();
using var actualRegions = TemporaryArray <BlockSpan> .Empty;
var options = BlockStructureOptions.From(document.Project);
outliner.CollectBlockSpans(trivia, ref actualRegions.AsRef(), options, CancellationToken.None);
// TODO: Determine why we get null outlining spans.
return(actualRegions.ToImmutableAndClear());
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
NamespaceDeclarationSyntax namespaceDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// add leading comments
CSharpStructureHelpers.CollectCommentBlockSpans(namespaceDeclaration, ref spans, options);
if (!namespaceDeclaration.OpenBraceToken.IsMissing &&
!namespaceDeclaration.CloseBraceToken.IsMissing)
{
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
namespaceDeclaration,
namespaceDeclaration.Name.GetLastToken(includeZeroWidth: true),
compressEmptyLines: false,
autoCollapse: false,
type: BlockTypes.Namespace,
isCollapsible: true));
}
// extern aliases and usings are outlined in a single region
var externsAndUsings = Enumerable.Union <SyntaxNode>(namespaceDeclaration.Externs, namespaceDeclaration.Usings)
.OrderBy(node => node.SpanStart)
.ToList();
// add any leading comments before the extern aliases and usings
if (externsAndUsings.Count > 0)
{
CSharpStructureHelpers.CollectCommentBlockSpans(externsAndUsings.First(), ref spans, options);
}
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
externsAndUsings, compressEmptyLines: false, autoCollapse: true,
type: BlockTypes.Imports, isCollapsible: true));
// finally, add any leading comments before the end of the namespace block
if (!namespaceDeclaration.CloseBraceToken.IsMissing)
{
CSharpStructureHelpers.CollectCommentBlockSpans(
namespaceDeclaration.CloseBraceToken.LeadingTrivia, ref spans);
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
LiteralExpressionSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
if (node.IsKind(SyntaxKind.StringLiteralExpression) &&
!node.ContainsDiagnostics)
{
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: node.Span,
hintSpan: node.Span,
type: BlockTypes.Expression,
autoCollapse: true,
isDefaultCollapsed: false));
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
TypeDeclarationSyntax typeDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(typeDeclaration, ref spans, options);
if (!typeDeclaration.OpenBraceToken.IsMissing &&
!typeDeclaration.CloseBraceToken.IsMissing)
{
var lastToken = typeDeclaration.TypeParameterList == null
? typeDeclaration.Identifier
: typeDeclaration.TypeParameterList.GetLastToken(includeZeroWidth: true);
SyntaxNodeOrToken current = typeDeclaration;
var nextSibling = current.GetNextSibling();
// Check IsNode to compress blank lines after this node if it is the last child of the parent.
//
// Collapse to Definitions doesn't collapse type nodes, but a Toggle All Outlining would collapse groups
// of types to the compressed form of not showing blank lines. All kinds of types are grouped together
// in Metadata as Source.
var compressEmptyLines = options.IsMetadataAsSource &&
(!nextSibling.IsNode || nextSibling.AsNode() is BaseTypeDeclarationSyntax);
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
typeDeclaration,
lastToken,
compressEmptyLines: compressEmptyLines,
autoCollapse: false,
type: BlockTypes.Type,
isCollapsible: true));
}
// add any leading comments before the end of the type block
if (!typeDeclaration.CloseBraceToken.IsMissing)
{
var leadingTrivia = typeDeclaration.CloseBraceToken.LeadingTrivia;
CSharpStructureHelpers.CollectCommentBlockSpans(leadingTrivia, ref spans);
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
InterpolatedStringExpressionSyntax node,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
if (node.StringStartToken.IsMissing ||
node.StringEndToken.IsMissing)
{
return;
}
spans.Add(new BlockSpan(
isCollapsible: true,
textSpan: node.Span,
hintSpan: node.Span,
type: BlockTypes.Expression,
autoCollapse: true,
isDefaultCollapsed: false));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
FileScopedNamespaceDeclarationSyntax fileScopedNamespaceDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// add leading comments
CSharpStructureHelpers.CollectCommentBlockSpans(fileScopedNamespaceDeclaration, ref spans, options);
// extern aliases and usings are outlined in a single region
var externsAndUsings = Enumerable.Union <SyntaxNode>(fileScopedNamespaceDeclaration.Externs, fileScopedNamespaceDeclaration.Usings).ToImmutableArray();
// add any leading comments before the extern aliases and usings
if (externsAndUsings.Any())
{
CSharpStructureHelpers.CollectCommentBlockSpans(externsAndUsings.First(), ref spans, options);
}
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
externsAndUsings, compressEmptyLines: false, autoCollapse: true,
type: BlockTypes.Imports, isCollapsible: true, isDefaultCollapsed: options.CollapseImportsWhenFirstOpened));
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
EnumDeclarationSyntax enumDeclaration,
ref TemporaryArray <BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
CSharpStructureHelpers.CollectCommentBlockSpans(enumDeclaration, ref spans, options);
if (!enumDeclaration.OpenBraceToken.IsMissing &&
!enumDeclaration.CloseBraceToken.IsMissing)
{
SyntaxNodeOrToken current = enumDeclaration;
var nextSibling = current.GetNextSibling();
// Check IsNode to compress blank lines after this node if it is the last child of the parent.
//
// Whitespace between type declarations is collapsed in Metadata as Source.
var compressEmptyLines = options.IsMetadataAsSource &&
(!nextSibling.IsNode || nextSibling.AsNode() is BaseTypeDeclarationSyntax);
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
enumDeclaration,
enumDeclaration.Identifier,
compressEmptyLines: compressEmptyLines,
autoCollapse: false,
type: BlockTypes.Member,
isCollapsible: true));
}
// add any leading comments before the end of the type block
if (!enumDeclaration.CloseBraceToken.IsMissing)
{
var leadingTrivia = enumDeclaration.CloseBraceToken.LeadingTrivia;
CSharpStructureHelpers.CollectCommentBlockSpans(leadingTrivia, ref spans);
}
}
protected override void CollectBlockSpans(
SyntaxToken previousToken,
SimpleLambdaExpressionSyntax lambdaExpression,
ref TemporaryArray <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));
}
internal override async Task <ImmutableArray <BlockSpan> > GetBlockSpansWorkerAsync(Document document, BlockStructureOptions options, int position)
{
var root = await document.GetSyntaxRootAsync();
var trivia = root.FindTrivia(position, findInsideTrivia: true);
var token = trivia.Token;
if (token.LeadingTrivia.Contains(trivia))
{
return(CSharpStructureHelpers.CreateCommentBlockSpan(token.LeadingTrivia));
}
else if (token.TrailingTrivia.Contains(trivia))
{
return(CSharpStructureHelpers.CreateCommentBlockSpan(token.TrailingTrivia));
}
throw Roslyn.Utilities.ExceptionUtilities.Unreachable;
}
public override async Task <BlockStructure> GetBlockStructureAsync(Document document, BlockStructureOptions options, CancellationToken cancellationToken)
{
var blockStructure = await _service.GetBlockStructureAsync(document, cancellationToken).ConfigureAwait(false);
if (blockStructure != null)
{
return(new BlockStructure(blockStructure.Spans.SelectAsArray(x => new BlockSpan(x.Type, x.IsCollapsible, x.TextSpan, x.HintSpan, x.BannerText, x.AutoCollapse, x.IsDefaultCollapsed))));
}
else
{
return(null);
}
}