From 70060e9979ef409a886ef100d9de210203293cbc Mon Sep 17 00:00:00 2001
From: ale <ale@paper.com>
Date: Fri, 1 Sep 2023 16:55:37 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=84=E7=90=86=20nullable=20GetValueOrDefau?=
 =?UTF-8?q?lt?=
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---
 .../VSProj/Src/Core/ReflectionMethodInvoker.cs   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Source/VSProj/Src/Core/ReflectionMethodInvoker.cs b/Source/VSProj/Src/Core/ReflectionMethodInvoker.cs
index 2de7441..b730435 100644
--- a/Source/VSProj/Src/Core/ReflectionMethodInvoker.cs
+++ b/Source/VSProj/Src/Core/ReflectionMethodInvoker.cs
@@ -34,6 +34,7 @@ internal class ReflectionMethodInvoker
 
         bool isNullableHasValue = false;
         bool isNullableValue = false;
+		bool isNullableGetValueOrDefault = false;
 
         public ReflectionMethodInvoker(MethodBase method)
         {
@@ -75,6 +76,7 @@ public ReflectionMethodInvoker(MethodBase method)
                 && method.DeclaringType.GetGenericTypeDefinition() == typeof(Nullable<>);
             isNullableHasValue = isNullableMethod && method.Name == "get_HasValue";
             isNullableValue = isNullableMethod && method.Name == "get_Value";
+			isNullableGetValueOrDefault = isNullableMethod && method.Name == "GetValueOrDefault";
         }
 
         // #lizard forgives
@@ -156,6 +158,20 @@ public unsafe void Invoke(VirtualMachine virtualMachine, ref Call call, bool isI
                     {
                         ret = instance;
                     }
+					else if (isNullableGetValueOrDefault)
+					{
+						if(instance == null)
+						{
+							if(paramCount == 0)
+								ret = System.Activator.CreateInstance(returnType);
+							else
+								ret = args[0];
+						}
+						else
+						{
+							ret = instance;
+						}
+					}
                     else
                     {
                         if (method.IsStatic == false && instance == null)