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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.
#nullable disable
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace Microsoft.VisualStudio.LanguageServices.CSharp.CodeModel
{
internal static class SyntaxNodeExtensions
{
public static bool TryGetAttributeLists(this SyntaxNode node, out SyntaxList<AttributeListSyntax> attributeLists)
{
if (node is CompilationUnitSyntax compilationUnit)
{
attributeLists = compilationUnit.AttributeLists;
return true;
}
else if (node is BaseTypeDeclarationSyntax baseType)
{
attributeLists = baseType.AttributeLists;
return true;
}
else if (node is BaseMethodDeclarationSyntax baseMethod)
{
attributeLists = baseMethod.AttributeLists;
return true;
}
else if (node is BasePropertyDeclarationSyntax baseProperty)
{
attributeLists = baseProperty.AttributeLists;
return true;
}
else if (node is BaseFieldDeclarationSyntax baseField)
{
attributeLists = baseField.AttributeLists;
return true;
}
else if (node is DelegateDeclarationSyntax delegateDeclaration)
{
attributeLists = delegateDeclaration.AttributeLists;
return true;
}
else if (node is EnumMemberDeclarationSyntax enumMember)
{
attributeLists = enumMember.AttributeLists;
return true;
}
else if (node is ParameterSyntax parameter)
{
attributeLists = parameter.AttributeLists;
return true;
}
attributeLists = default;
return false;
}
public static SyntaxToken GetFirstTokenAfterAttributes(this SyntaxNode node)
{
if (node.TryGetAttributeLists(out var attributeLists) && attributeLists.Count > 0)
{
return attributeLists.Last().GetLastToken().GetNextToken();
}
return node.GetFirstToken();
}
}
}
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