File: src\Workspaces\SharedUtilitiesAndExtensions\Compiler\CSharp\Services\SelectedMembers\CSharpSelectedMembers.cs
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Project: src\src\Workspaces\CSharp\Portable\Microsoft.CodeAnalysis.CSharp.Workspaces.csproj (Microsoft.CodeAnalysis.CSharp.Workspaces)
// 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 System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis.CSharp.Extensions;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.LanguageService;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.CSharp.LanguageService;
 
internal class CSharpSelectedMembers : AbstractSelectedMembers<
    MemberDeclarationSyntax,
    FieldDeclarationSyntax,
    PropertyDeclarationSyntax,
    TypeDeclarationSyntax,
    VariableDeclaratorSyntax>
{
    public static readonly CSharpSelectedMembers Instance = new();
 
    private CSharpSelectedMembers()
    {
    }
 
    protected override ImmutableArray<(SyntaxNode declarator, SyntaxToken identifier)> GetDeclaratorsAndIdentifiers(MemberDeclarationSyntax member)
    {
        return member switch
        {
            FieldDeclarationSyntax fieldDeclaration => fieldDeclaration.Declaration.Variables.SelectAsArray(
                v => (declaration: (SyntaxNode)v, identifier: v.Identifier)),
            EventFieldDeclarationSyntax eventFieldDeclaration => eventFieldDeclaration.Declaration.Variables.SelectAsArray(
                v => (declaration: (SyntaxNode)v, identifier: v.Identifier)),
            _ => [(declaration: (SyntaxNode)member, identifier: member.GetNameToken())],
        };
    }
 
    protected override SyntaxList<MemberDeclarationSyntax> GetMembers(TypeDeclarationSyntax containingType)
        => containingType.Members;
}