native api: on nonexistent type, return null instead of error

jakobhellermann · K0lb3 · commit e9cc8a1eca9d · 2025-10-03T23:59:44.000+02:00
diff --git a/TypeTreeGeneratorAPI/NativeAPI.cs b/TypeTreeGeneratorAPI/NativeAPI.cs
@@ -148,7 +148,8 @@ public static int TypeTreeGenerator_generateTreeNodesJson(IntPtr typeTreeGenerat
                 var typeTreeNodes = handle.Instance.GenerateTreeNodes(assemblyName, fullName);
                 if (typeTreeNodes == null)
                 {
-                    return -1;
+                    Marshal.WriteIntPtr(jsonAddr, IntPtr.Zero);
+                    return 0;
                 }
                 var json = TypeTreeNodeSerializer.ToJson(typeTreeNodes!);
                 Marshal.WriteIntPtr(jsonAddr, Marshal.StringToCoTaskMemUTF8(json));
@@ -177,7 +178,9 @@ public static int TypeTreeGenerator_generateTreeNodesRaw(IntPtr typeTreeGenerato
                 var typeTreeNodes = handle.Instance.GenerateTreeNodes(assemblyName, fullName);
                 if (typeTreeNodes == null)
                 {
-                    return -1;
+                    Marshal.WriteIntPtr(arrAddrPtr, IntPtr.Zero);
+                    Marshal.WriteInt32(arrLengthPtr, 0);
+                    return 0;
                 }
                 var (arrayPtr, arrayLength) = TypeTreeNodeSerializer.ToRaw(typeTreeNodes!);
 

Original file line number	Diff line number	Diff line change
`@@ -148,7 +148,8 @@ public static int TypeTreeGenerator_generateTreeNodesJson(IntPtr typeTreeGenerat`
`148`	`148`	`var typeTreeNodes = handle.Instance.GenerateTreeNodes(assemblyName, fullName);`
`149`	`149`	`if (typeTreeNodes == null)`
`150`	`150`	`{`
`151`		`- return -1;`
	`151`	`+ Marshal.WriteIntPtr(jsonAddr, IntPtr.Zero);`
	`152`	`+ return 0;`
`152`	`153`	`}`
`153`	`154`	`var json = TypeTreeNodeSerializer.ToJson(typeTreeNodes!);`
`154`	`155`	`Marshal.WriteIntPtr(jsonAddr, Marshal.StringToCoTaskMemUTF8(json));`
`@@ -177,7 +178,9 @@ public static int TypeTreeGenerator_generateTreeNodesRaw(IntPtr typeTreeGenerato`
`177`	`178`	`var typeTreeNodes = handle.Instance.GenerateTreeNodes(assemblyName, fullName);`
`178`	`179`	`if (typeTreeNodes == null)`
`179`	`180`	`{`
`180`		`- return -1;`
	`181`	`+ Marshal.WriteIntPtr(arrAddrPtr, IntPtr.Zero);`
	`182`	`+ Marshal.WriteInt32(arrLengthPtr, 0);`
	`183`	`+ return 0;`
`181`	`184`	`}`
`182`	`185`	`var (arrayPtr, arrayLength) = TypeTreeNodeSerializer.ToRaw(typeTreeNodes!);`
`183`	`186`