using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Linq.Expressions;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;



namespace ServerCore;


//=============================================================================================
// 객체 Null 체크 관련 예외 지원 함수
//
// author : kangms
// 
//=============================================================================================

public static class ArgumentNullReferenceCheckHelper
{
    public static void throwIfNull( [NotNull] object? argument
                                  , Func<string>? fnLog = null
                                  , [CallerArgumentExpression(nameof(argument))] string? paramName = null
                                  , Func<string, Exception>? overrideException = null )
    {
        if (argument != null)
            return;

        string message = fnLog?.Invoke() ?? $"Argument '{paramName}' cannot be null !!!";

        if (overrideException != null)
        {
            throw overrideException(message);
        }

        throw new ArgumentNullException(paramName, message);
    }
}

public static class NullReferenceCheckHelper
{
    public static void throwIfNull( [NotNull] object? argument
                                  , Func<string>? fnLog = null
                                  , [CallerArgumentExpression(nameof(argument))] string? paramName = null
                                  , Func<string, Exception>? overrideException = null )
    {
        if (argument != null)
            return;

        string message = fnLog?.Invoke() ?? $"'{paramName}' object cannot be null !!!";

        if (overrideException != null)
        {
            throw overrideException(message);
        }

        throw new NullReferenceException(message);
    }
}