set_element_value - optimizations setting enum values

1) Identify from previous pset value whether prop was an enum (by checking if previous value is a list), instead of searching through prop templates

2) Compare previous and new enum values - if they match, skip editing IFC.

src/ifcopenshell-python/ifcopenshell/util/selector.py

@@ -17,6 +17,7 @@
 # along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
 
 import re
+import types
 import lark
 import numpy as np
 import ifcopenshell.api.pset
@@ -466,7 +467,12 @@ class SetElementValueException(Exception): ...
 
 def set_element_value(
     ifc_file: ifcopenshell.file,
-    element: Union[ifcopenshell.entity_instance, Iterable[ifcopenshell.entity_instance], None],
+    element: Union[
+        ifcopenshell.entity_instance,
+        dict[str, Any],
+        Iterable[ifcopenshell.entity_instance],
+        None,
+    ],
     query: Union[str, list[str]],
     value: Any,
     *,
@@ -656,14 +662,30 @@ def set_element_value(
                             ifcopenshell.api.pset.edit_qto(ifc_file, qto=pset, properties={prop: float(value)})
             elif pset.is_a("IfcPropertySet") and element.get(key, None) != value:
 
-                def process_pset_prop_value(pset: ifcopenshell.entity_instance, prop: str, value: Any) -> Any:
+                def process_pset_prop_value(
+                    pset: ifcopenshell.entity_instance, prop: str, value: Any
+                ) -> Union[Any, types.EllipsisType]:
                     """Try to process value for edit_pset.
 
                     `edit_pset` is expecting a sequence of values
                     for enum properties, not just a string of some-symbol-separated values.
+
+                    Return `...` if property can be skipped as it has the same value.
                     """
                     if not isinstance(value, str):
                         return value
+
+                    current_value = element.get(key, ...)
+                    # Check if previous value is a list as a fast way to identify enum properties.
+                    if not isinstance(current_value, (types.EllipsisType, list)):
+                        return value
+
+                    if isinstance(current_value, list):
+                        # Value won't change, safe to skip editing IFC.
+                        enum_values = value.split(concat)
+                        if len(enum_values) == len(current_value) and set(enum_values) == set(current_value):
+                            return ...
+
                     template = ifcopenshell.util.pset.get_template(ifc_file.schema)
                     pset_template = template.get_by_name(pset.Name)
                     if pset_template is None:
@@ -704,6 +726,8 @@ def set_element_value(
                     return value
 
                 value = process_pset_prop_value(pset, key, value)
+                if value == ...:
+                    return
                 ifcopenshell.api.pset.edit_pset(ifc_file, pset=pset, properties={key: value})
             elif pset.is_a("IfcElementQuantity"):
                 try: