using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace BPASmartClient.GSIceCream
{
    public class IcPack
    {
        private const int BASIC_LENGTH = 5;
        public static byte[] StructureToByte<T>(T structure)
        {
            int size = Marshal.SizeOf(typeof(T));
            byte[] buffer = new byte[size];
            IntPtr bufferIntPtr = Marshal.AllocHGlobal(size);
            try
            {
                Marshal.StructureToPtr(structure, bufferIntPtr, true);
                Marshal.Copy(bufferIntPtr, buffer, 0, size);
            }
            finally
            {
                Marshal.FreeHGlobal(bufferIntPtr);
            }
            return buffer;
        }

        /// <summary>  
        /// 由byte数组转换为结构体  
        /// </summary>  
        public static T ByteToStructure<T>(byte[] dataBuffer)
        {
            object structure = null;
            int size = Marshal.SizeOf(typeof(T));
            IntPtr allocIntPtr = Marshal.AllocHGlobal(size);
            try
            {
                Marshal.Copy(dataBuffer, 0, allocIntPtr, size);
                structure = Marshal.PtrToStructure(allocIntPtr, typeof(T));
            }
            finally
            {
                Marshal.FreeHGlobal(allocIntPtr);
            }
            return (T)structure;
        }
    }
}