// 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.
 
namespace Microsoft.CodeAnalysis.CSharp.Extensions
{
    internal static partial class ITypeSymbolExtensions
    {
        public static bool IsIntrinsicType(this ITypeSymbol typeSymbol)
        {
            switch (typeSymbol.SpecialType)
            {
                case SpecialType.System_Boolean:
                case SpecialType.System_Char:
                case SpecialType.System_SByte:
                case SpecialType.System_Int16:
                case SpecialType.System_Int32:
                case SpecialType.System_Int64:
                case SpecialType.System_Byte:
                case SpecialType.System_UInt16:
                case SpecialType.System_UInt32:
                case SpecialType.System_UInt64:
                case SpecialType.System_Single:
                case SpecialType.System_Double:
                // NOTE: VB treats System.DateTime as an intrinsic, while C# does not, see "predeftype.h"
                //case SpecialType.System_DateTime:
                case SpecialType.System_Decimal:
                    return true;
                default:
                    return false;
            }
        }
    }
}