Fix recognition of individual value from native enum with enum name marked as deprecated

Remove some duplicate code

Author: Meorge

modules/gdscript/gdscript_analyzer.cpp

@@ -4042,24 +4042,33 @@ void GDScriptAnalyzer::reduce_identifier_from_base(GDScriptParser::IdentifierNod
 
 	if (base.kind == GDScriptParser::DataType::ENUM) {
 #if DEBUG_ENABLED
-		if (base.class_type && base.class_type->identifier && base.class_type->identifier->name) {
-			DocTools *dd = EditorHelp::get_doc_data();
-			StringName class_name = base.class_type->identifier->name;
+		StringName class_name;
+		DocTools *dd = EditorHelp::get_doc_data();
+		// TODO: Is this a proper way of detecting it's from a native class?
+		// e.g., "AnimationPlayer.AnimationProcessCallback"
+		// User-defined enums also seem to have a "native_type" so we can't
+		// detect actual native classes solely based on whether or not that
+		// string is defined.
+		if (base.native_type && !base.class_type) {
+			class_name = String(base.native_type).get_slicec('.', 0);
+		}
 
+		else if (base.class_type && base.class_type->identifier && base.class_type->identifier->name) {
+			class_name = base.class_type->identifier->name;
 			// It's an inner class, so we need to get the outer class's name
 			// as well to construct its full name as found in the doc data.
 			if (base.class_type->outer != nullptr) {
 				class_name = String(base.class_type->outer->identifier->name) + "." + class_name;
 			}
+		}
 
-			if (dd && dd->class_list.has(class_name)) {
-				for (const DocData::ConstantDoc &doc : dd->class_list[class_name].constants) {
-					if (doc.enumeration == base.enum_type && doc.name == name) {
-						if (doc.is_deprecated) {
-							parser->push_warning(p_identifier, GDScriptWarning::DEPRECATED_IDENTIFIER);
-						}
-						break;
+		if (dd && dd->class_list.has(class_name)) {
+			for (const DocData::ConstantDoc &doc : dd->class_list[class_name].constants) {
+				if (doc.enumeration == base.enum_type && doc.name == name) {
+					if (doc.is_deprecated) {
+						parser->push_warning(p_identifier, GDScriptWarning::DEPRECATED_IDENTIFIER);
 					}
+					break;
 				}
 			}
 		}