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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.Linq;
using System.Threading;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.PooledObjects;
using Microsoft.CodeAnalysis.Structure;
namespace Microsoft.CodeAnalysis.CSharp.Structure;
internal class NamespaceDeclarationStructureProvider : AbstractSyntaxNodeStructureProvider<NamespaceDeclarationSyntax>
{
protected override void CollectBlockSpans(
SyntaxToken previousToken,
NamespaceDeclarationSyntax namespaceDeclaration,
ArrayBuilder<BlockSpan> spans,
BlockStructureOptions options,
CancellationToken cancellationToken)
{
// add leading comments
CSharpStructureHelpers.CollectCommentBlockSpans(namespaceDeclaration, 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(), spans, options);
}
spans.AddIfNotNull(CSharpStructureHelpers.CreateBlockSpan(
externsAndUsings, compressEmptyLines: false, autoCollapse: true,
type: BlockTypes.Imports, isCollapsible: true, isDefaultCollapsed: options.CollapseImportsWhenFirstOpened));
// finally, add any leading comments before the end of the namespace block
if (!namespaceDeclaration.CloseBraceToken.IsMissing)
{
CSharpStructureHelpers.CollectCommentBlockSpans(
namespaceDeclaration.CloseBraceToken.LeadingTrivia, spans);
}
}
}
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