From 1fbfc440acb1b7d900d9e756dac12e73e9557a64 Mon Sep 17 00:00:00 2001
From: Christopher Lackner <clackner@cerbsim.com>
Date: Thu, 20 Jan 2022 17:03:16 +0100
Subject: [PATCH] shape.name return optional<string>

---
 libsrc/occ/python_occ_shapes.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libsrc/occ/python_occ_shapes.cpp b/libsrc/occ/python_occ_shapes.cpp
index 5c3fbe55..91e94c50 100644
--- a/libsrc/occ/python_occ_shapes.cpp
+++ b/libsrc/occ/python_occ_shapes.cpp
@@ -719,11 +719,11 @@ DLL_HEADER void ExportNgOCCShapes(py::module &m)
            return shape;
          }, py::arg("name"), "sets 'name' property to all solids of shape")
     
-    .def_property("name", [](const TopoDS_Shape & self) {
+    .def_property("name", [](const TopoDS_Shape & self) -> optional<string> {
         if (auto name = OCCGeometry::global_shape_properties[self.TShape()].name)
           return *name;
         else
-          return string();
+          return nullopt;
       }, [](const TopoDS_Shape & self, optional<string> name) {
         OCCGeometry::global_shape_properties[self.TShape()].name = name;            
       }, "'name' of shape")