IDManagement: Add new `BKE_id_owner_get` accessor.

Essentially calls `IDTypeInfo->owner_get` for now, will make more sense
once the callback is changed to return the address of the pointer
instead.

3 files changed, 23 insertions, 19 deletions

diff --git a/source/blender/blenkernel/intern/lib_id.c b/source/blender/blenkernel/intern/lib_id.c
index 5a394a05d86..cead6702080 100644
--- a/source/blender/blenkernel/intern/lib_id.c
+++ b/source/blender/blenkernel/intern/lib_id.c
@@ -1965,6 +1965,15 @@ bool BKE_id_can_be_asset(const ID *id)
          BKE_idtype_idcode_is_linkable(GS(id->name));
 }
 
+ID *BKE_id_owner_get(ID *id)
+{
+  const IDTypeInfo *idtype = BKE_idtype_get_info_from_id(id);
+  if (idtype->owner_get != NULL) {
+    return idtype->owner_get(id);
+  }
+  return NULL;
+}
+
 bool BKE_id_is_editable(const Main *bmain, const ID *id)
 {
   return !(ID_IS_LINKED(id) || BKE_lib_override_library_is_system_defined(bmain, id));
diff --git a/source/blender/blenkernel/intern/lib_override.cc b/source/blender/blenkernel/intern/lib_override.cc
index a85a6c5730f..0200b534ace 100644
--- a/source/blender/blenkernel/intern/lib_override.cc
+++ b/source/blender/blenkernel/intern/lib_override.cc
@@ -97,21 +97,17 @@ BLI_INLINE const IDOverrideLibrary *BKE_lib_override_library_get(const Main * /*
                                                                  const ID * /*owner_id_hint*/,
                                                                  const ID **r_owner_id)
 {
-  if (r_owner_id != nullptr) {
-    *r_owner_id = id;
-  }
   if (id->flag & LIB_EMBEDDED_DATA_LIB_OVERRIDE) {
-    const IDTypeInfo *id_type = BKE_idtype_get_info_from_id(id);
-    if (id_type->owner_get != nullptr) {
-      /* The #IDTypeInfo::owner_get callback should not modify the arguments, so casting away const
-       * is okay. */
-      const ID *owner_id = id_type->owner_get(const_cast<ID *>(id));
-      if (r_owner_id != nullptr) {
-        *r_owner_id = owner_id;
-      }
-      return owner_id->override_library;
+    const ID *owner_id = BKE_id_owner_get(const_cast<ID *>(id));
+    BLI_assert_msg(owner_id != nullptr, "Liboverride-embedded ID with no owner");
+    if (r_owner_id != nullptr) {
+      *r_owner_id = owner_id;
     }
-    BLI_assert_msg(0, "IDTypeInfo of liboverride-embedded ID with no owner getter");
+    return owner_id->override_library;
+  }
+
+  if (r_owner_id != nullptr) {
+    *r_owner_id = id;
   }
   return id->override_library;
 }
@@ -2211,9 +2207,9 @@ static bool lib_override_resync_id_lib_level_is_valid(ID *id,
 static ID *lib_override_library_main_resync_root_get(Main * /*bmain*/, ID *id)
 {
   if (!ID_IS_OVERRIDE_LIBRARY_REAL(id)) {
-    const IDTypeInfo *id_type = BKE_idtype_get_info_from_id(id);
-    if (id_type->owner_get != nullptr) {
-      id = id_type->owner_get(id);
+    ID *id_owner = BKE_id_owner_get(id);
+    if (id_owner != nullptr) {
+      id = id_owner;
     }
     BLI_assert(ID_IS_OVERRIDE_LIBRARY_REAL(id));
   }
diff --git a/source/blender/blenkernel/intern/lib_query.c b/source/blender/blenkernel/intern/lib_query.c
index e51f3c524fa..50843b18d18 100644
--- a/source/blender/blenkernel/intern/lib_query.c
+++ b/source/blender/blenkernel/intern/lib_query.c
@@ -711,9 +711,8 @@ static void lib_query_unused_ids_tag_recurse(Main *bmain,
     ID *id_from = id_from_item->id_pointer.from;
     if ((id_from->flag & LIB_EMBEDDED_DATA) != 0) {
       /* Directly 'by-pass' to actual real ID owner. */
-      const IDTypeInfo *type_info_from = BKE_idtype_get_info_from_id(id_from);
-      BLI_assert(type_info_from->owner_get != NULL);
-      id_from = type_info_from->owner_get(id_from);
+      id_from = BKE_id_owner_get(id_from);
+      BLI_assert(id_from != NULL);
     }
 
     lib_query_unused_ids_tag_recurse(