//  Copyright 2016 Google Inc. All Rights Reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.

using System;
using System.Runtime.InteropServices;

namespace NtApiDotNet
{
#pragma warning disable 1591
    [StructLayout(LayoutKind.Explicit)]
    public class LargeInteger
    {
        [FieldOffset(0)]
        public uint LowPart;
        [FieldOffset(4)]
        public int HighPart;
        [FieldOffset(0)]
        public long QuadPart;

        public LargeInteger()
        {
        }

        public LargeInteger(long value)
        {
            QuadPart = value;
        }

        internal DateTime ToDateTime()
        {
            return DateTime.FromFileTime(QuadPart);
        }
    }

    [StructLayout(LayoutKind.Explicit)]
    public struct LargeIntegerStruct
    {
        [FieldOffset(0)]
        public uint LowPart;
        [FieldOffset(4)]
        public int HighPart;
        [FieldOffset(0)]
        public long QuadPart;

        internal DateTime ToDateTime()
        {
            try
            {
                return DateTime.FromFileTime(QuadPart);
            }
            catch (ArgumentException)
            {
                return DateTime.MinValue;
            }
        }
    }
#pragma warning restore 1591
}
