From 2e777201f3160b9c96b2872299f08fd38f9c4776 Mon Sep 17 00:00:00 2001
From: Siegfried Pammer <siegfriedpammer@gmail.com>
Date: Fri, 15 Mar 2024 22:01:16 +0100
Subject: [PATCH] Fix bug in UnknownType: FullName of nested unknown types did
 not contain the outer type name(s), but only namespace and nested type name.

---
 .../TypeSystem/FullTypeName.cs                   | 16 ++++++++++++++++
 .../TypeSystem/Implementation/UnknownType.cs     |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/ICSharpCode.Decompiler/TypeSystem/FullTypeName.cs b/ICSharpCode.Decompiler/TypeSystem/FullTypeName.cs
index 9df4bf8a41..36712ee645 100644
--- a/ICSharpCode.Decompiler/TypeSystem/FullTypeName.cs
+++ b/ICSharpCode.Decompiler/TypeSystem/FullTypeName.cs
@@ -165,6 +165,22 @@ public string ReflectionName {
 			}
 		}
 
+		public string FullName {
+			get {
+				if (nestedTypes == null)
+					return topLevelType.Namespace + "." + topLevelType.Name;
+				StringBuilder b = new StringBuilder(topLevelType.Namespace);
+				b.Append('.');
+				b.Append(topLevelType.Name);
+				foreach (NestedTypeName nt in nestedTypes)
+				{
+					b.Append('.');
+					b.Append(nt.Name);
+				}
+				return b.ToString();
+			}
+		}
+
 		/// <summary>
 		/// Gets the total type parameter count.
 		/// </summary>
diff --git a/ICSharpCode.Decompiler/TypeSystem/Implementation/UnknownType.cs b/ICSharpCode.Decompiler/TypeSystem/Implementation/UnknownType.cs
index 28a0f33b7e..9489194bf4 100644
--- a/ICSharpCode.Decompiler/TypeSystem/Implementation/UnknownType.cs
+++ b/ICSharpCode.Decompiler/TypeSystem/Implementation/UnknownType.cs
@@ -95,6 +95,10 @@ public override string ReflectionName {
 			get { return namespaceKnown ? fullTypeName.ReflectionName : "?"; }
 		}
 
+		public override string FullName {
+			get { return namespaceKnown ? fullTypeName.FullName : "?"; }
+		}
+
 		public FullTypeName FullTypeName => fullTypeName;
 
 		public override int TypeParameterCount => fullTypeName.TypeParameterCount;