// 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.Collections.Generic;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.Rename
{
    internal sealed class TokenRenameInfo
    {
        public bool HasSymbols { get; private set; }
        public IEnumerable<ISymbol> Symbols { get; private set; }
        public bool IsMemberGroup { get; private set; }
 
        public TokenRenameInfo(bool hasSymbols, IEnumerable<ISymbol> symbols, bool isMemberGroup)
        {
            HasSymbols = hasSymbols;
            Symbols = symbols;
            IsMemberGroup = isMemberGroup;
        }
 
        public static TokenRenameInfo CreateMemberGroupTokenInfo(IEnumerable<ISymbol> symbols)
        {
            return new TokenRenameInfo
            (
                hasSymbols: true,
                isMemberGroup: true,
                symbols: symbols
            );
        }
 
        public static TokenRenameInfo CreateSingleSymbolTokenInfo(ISymbol symbol)
        {
            return new TokenRenameInfo
            (
                hasSymbols: true,
                isMemberGroup: false,
                symbols: SpecializedCollections.SingletonEnumerable(symbol)
            );
        }
 
        public static TokenRenameInfo NoSymbolsTokenInfo = new
        (
            hasSymbols: false,
            isMemberGroup: false,
            symbols: SpecializedCollections.EmptyEnumerable<ISymbol>()
        );
    }
}