Implement native InventoryExplorer

crates/libremetaverse/src/lib.rs

@@ -214,6 +214,11 @@ pub trait InventoryObjectClass: std::any::Any {
 
     /// Returns the shared `InventoryBase` portion of the concrete object.
     fn inventory_base(&self) -> &InventoryBase;
+
+    /// Returns the shared `InventoryItem` portion for item-derived objects.
+    fn inventory_item(&self) -> Option<&InventoryItem> {
+        None
+    }
 }
 
 /// Rust object-safe view of concrete classes derived from C# `InventoryItem`.
@@ -233,6 +238,24 @@ macro_rules! inventory_object_class {
     };
 }
 
+macro_rules! inventory_item_class {
+    ($type:ty, $item:ident $(.$nested:ident)*) => {
+        impl InventoryObjectClass for $type {
+            fn as_any(&self) -> &dyn std::any::Any {
+                self
+            }
+
+            fn inventory_base(&self) -> &InventoryBase {
+                &self.$item$(.$nested)*.base
+            }
+
+            fn inventory_item(&self) -> Option<&InventoryItem> {
+                Some(&self.$item$(.$nested)*)
+            }
+        }
+    };
+}
+
 impl InventoryObjectClass for InventoryBase {
     fn as_any(&self) -> &dyn std::any::Any {
         self
@@ -244,22 +267,34 @@ impl InventoryObjectClass for InventoryBase {
 }
 
 inventory_object_class!(InventoryFolder, base);
-inventory_object_class!(InventoryItem, base);
-inventory_object_class!(InventoryAnimation, base.base);
-inventory_object_class!(InventoryAttachment, base.base);
-inventory_object_class!(InventoryCallingCard, base.base);
-inventory_object_class!(InventoryCategory, base.base);
-inventory_object_class!(InventoryGesture, base.base);
-inventory_object_class!(InventoryLSL, base.base);
-inventory_object_class!(InventoryLandmark, base.base);
-inventory_object_class!(InventoryMaterial, base.base);
-inventory_object_class!(InventoryNotecard, base.base);
-inventory_object_class!(InventoryObject, base.base);
-inventory_object_class!(InventorySettings, base.base);
-inventory_object_class!(InventorySnapshot, base.base);
-inventory_object_class!(InventorySound, base.base);
-inventory_object_class!(InventoryTexture, base.base);
-inventory_object_class!(InventoryWearable, base.base);
+impl InventoryObjectClass for InventoryItem {
+    fn as_any(&self) -> &dyn std::any::Any {
+        self
+    }
+
+    fn inventory_base(&self) -> &InventoryBase {
+        &self.base
+    }
+
+    fn inventory_item(&self) -> Option<&InventoryItem> {
+        Some(self)
+    }
+}
+inventory_item_class!(InventoryAnimation, base);
+inventory_item_class!(InventoryAttachment, base);
+inventory_item_class!(InventoryCallingCard, base);
+inventory_item_class!(InventoryCategory, base);
+inventory_item_class!(InventoryGesture, base);
+inventory_item_class!(InventoryLSL, base);
+inventory_item_class!(InventoryLandmark, base);
+inventory_item_class!(InventoryMaterial, base);
+inventory_item_class!(InventoryNotecard, base);
+inventory_item_class!(InventoryObject, base);
+inventory_item_class!(InventorySettings, base);
+inventory_item_class!(InventorySnapshot, base);
+inventory_item_class!(InventorySound, base);
+inventory_item_class!(InventoryTexture, base);
+inventory_item_class!(InventoryWearable, base);
 
 impl InventoryItemClass for InventoryItem {}
 impl InventoryItemClass for InventoryAnimation {}