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ServerCore/Exception/ConditionCheckHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+
+namespace ServerCore;
+
+
+//=============================================================================================
+// 조건 체크 관련 예외 지원 함수
+//
+// author : kangms
+// 
+//=============================================================================================
+
+public static class ConditionValidCheckHelper
+{
+    public static void throwIfFalse( bool isCondition
+                                   , string errMsg )
+    {
+        if (false == isCondition)
+        {
+            throw new InvalidOperationException(errMsg);
+        }
+    }
+
+    public static void throwIfFalseWithCondition( Expression<Func<bool>> conditionExpression
+                                                , Func<string>? fnLog = null )
+    {
+        var compiled_expression = conditionExpression.Compile();
+        if (false == compiled_expression())
+        {
+            string condition_text = conditionExpression.Body.ToString();
+
+            var err_msg = fnLog?.Invoke() ?? $"Failed to check Condition: '{condition_text}'";
+
+            throw new InvalidOperationException(err_msg);
+        }
+    }
+}

ServerCore/Exception/NullReferenceCheckHelper.cs

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+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 )
+    {
+        if (argument != null)
+            return;
+
+        if (fnLog != null)
+        {
+            throw new ArgumentNullException(paramName, fnLog());
+        }
+
+        if (paramName != null)
+        {
+            throw new ArgumentNullException(paramName, $"Argument '{paramName}' cannot be null !!!");
+        }
+
+        throw new ArgumentNullException("Cannot generate null-check error message: both 'fnLog' and 'paramName' are null !!!");
+    }
+}
+
+public static class NullReferenceCheckHelper
+{
+    public static void throwIfNull( [NotNull] object? argument
+                                  , Func<string>? fnLog = null
+                                  , [CallerArgumentExpression(nameof(argument))] string? paramName = null )
+    {
+        if (argument != null)
+            return;
+
+        if (fnLog != null)
+        {
+            throw new NullReferenceException(fnLog());
+        }
+
+        if (paramName != null)
+        {
+            throw new NullReferenceException($"'{paramName}' object cannot be null !!!");
+        }
+
+        throw new NullReferenceException("Cannot generate null-check error message: both 'fnLog' and 'paramName' are null !!!");
+    }
+}