From a45649d3d1b680fa5da802bf3fbd12f36b8325e5 Mon Sep 17 00:00:00 2001
From: Thorsten Sommer <mail@tsommer.org>
Date: Tue, 11 Mar 2025 19:19:17 +0100
Subject: [PATCH] Added handling for default values for methods

---
 .../UsageAnalyzers/EmptyStringAnalyzer.cs     | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/app/SourceCodeRules/SourceCodeRules/UsageAnalyzers/EmptyStringAnalyzer.cs b/app/SourceCodeRules/SourceCodeRules/UsageAnalyzers/EmptyStringAnalyzer.cs
index f6cc65b7..5092d436 100644
--- a/app/SourceCodeRules/SourceCodeRules/UsageAnalyzers/EmptyStringAnalyzer.cs
+++ b/app/SourceCodeRules/SourceCodeRules/UsageAnalyzers/EmptyStringAnalyzer.cs
@@ -46,6 +46,9 @@ public sealed class EmptyStringAnalyzer : DiagnosticAnalyzer
         if (IsInConstContext(stringLiteral))
             return;
         
+        if (IsInParameterDefaultValue(stringLiteral))
+            return;
+        
         var diagnostic = Diagnostic.Create(RULE, stringLiteral.GetLocation());
         context.ReportDiagnostic(diagnostic);
     }
@@ -65,4 +68,21 @@ public sealed class EmptyStringAnalyzer : DiagnosticAnalyzer
             _ => false
         };
     }
+    
+    private static bool IsInParameterDefaultValue(LiteralExpressionSyntax stringLiteral)
+    {
+        // Prüfen, ob das String-Literal Teil eines Parameter-Defaults ist
+        var parameter = stringLiteral.FirstAncestorOrSelf<ParameterSyntax>();
+        if (parameter is null)
+            return false;
+        
+        // Überprüfen, ob das String-Literal im Default-Wert des Parameters verwendet wird
+        if (parameter.Default is not null && 
+            parameter.Default.Value == stringLiteral)
+        {
+            return true;
+        }
+    
+        return false;
+    }
 }
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