Cleanup: changed NULL to nullptr in depsgraph C++ code

No functional changes.

1 files changed, 143 insertions, 143 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index f6a6b6f77da..0b3e6aedac0 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -127,7 +127,7 @@ namespace {
 bool driver_target_depends_on_time(const DriverTarget *target)
 {
   if (target->idtype == ID_SCE &&
-      (target->rna_path != NULL && STREQ(target->rna_path, "frame_current"))) {
+      (target->rna_path != nullptr && STREQ(target->rna_path, "frame_current"))) {
     return true;
   }
   return false;
@@ -195,10 +195,10 @@ bool object_particles_depends_on_time(Object *object)
 bool check_id_has_anim_component(ID *id)
 {
   AnimData *adt = BKE_animdata_from_id(id);
-  if (adt == NULL) {
+  if (adt == nullptr) {
     return false;
   }
-  return (adt->action != NULL) || (!BLI_listbase_is_empty(&adt->nla_tracks));
+  return (adt->action != nullptr) || (!BLI_listbase_is_empty(&adt->nla_tracks));
 }
 
 OperationCode bone_target_opcode(ID *target,
@@ -232,7 +232,7 @@ bool object_have_geometry_component(const Object *object)
 DepsgraphRelationBuilder::DepsgraphRelationBuilder(Main *bmain,
                                                    Depsgraph *graph,
                                                    DepsgraphBuilderCache *cache)
-    : DepsgraphBuilder(bmain, graph, cache), scene_(NULL), rna_node_query_(graph, this)
+    : DepsgraphBuilder(bmain, graph, cache), scene_(nullptr), rna_node_query_(graph, this)
 {
 }
 
@@ -240,7 +240,7 @@ TimeSourceNode *DepsgraphRelationBuilder::get_node(const TimeSourceKey &key) con
 {
   if (key.id) {
     /* XXX TODO */
-    return NULL;
+    return nullptr;
   }
   else {
     return graph_->time_source;
@@ -253,8 +253,8 @@ ComponentNode *DepsgraphRelationBuilder::get_node(const ComponentKey &key) const
   if (!id_node) {
     fprintf(stderr,
             "find_node component: Could not find ID %s\n",
-            (key.id != NULL) ? key.id->name : "<null>");
-    return NULL;
+            (key.id != nullptr) ? key.id->name : "<null>");
+    return nullptr;
   }
 
   ComponentNode *node = id_node->find_component(key.type, key.name);
@@ -264,7 +264,7 @@ ComponentNode *DepsgraphRelationBuilder::get_node(const ComponentKey &key) const
 OperationNode *DepsgraphRelationBuilder::get_node(const OperationKey &key) const
 {
   OperationNode *op_node = find_node(key);
-  if (op_node == NULL) {
+  if (op_node == nullptr) {
     fprintf(stderr,
             "find_node_operation: Failed for (%s, '%s')\n",
             operationCodeAsString(key.opcode),
@@ -282,18 +282,18 @@ OperationNode *DepsgraphRelationBuilder::find_node(const OperationKey &key) cons
 {
   IDNode *id_node = graph_->find_id_node(key.id);
   if (!id_node) {
-    return NULL;
+    return nullptr;
   }
   ComponentNode *comp_node = id_node->find_component(key.component_type, key.component_name);
   if (!comp_node) {
-    return NULL;
+    return nullptr;
   }
   return comp_node->find_operation(key.opcode, key.name, key.name_tag);
 }
 
 bool DepsgraphRelationBuilder::has_node(const OperationKey &key) const
 {
-  return find_node(key) != NULL;
+  return find_node(key) != nullptr;
 }
 
 void DepsgraphRelationBuilder::add_modifier_to_transform_relation(const DepsNodeHandle *handle,
@@ -309,10 +309,10 @@ void DepsgraphRelationBuilder::add_modifier_to_transform_relation(const DepsNode
 void DepsgraphRelationBuilder::add_customdata_mask(Object *object,
                                                    const DEGCustomDataMeshMasks &customdata_masks)
 {
-  if (customdata_masks != DEGCustomDataMeshMasks() && object != NULL && object->type == OB_MESH) {
+  if (customdata_masks != DEGCustomDataMeshMasks() && object != nullptr && object->type == OB_MESH) {
     DEG::IDNode *id_node = graph_->find_id_node(&object->id);
 
-    if (id_node == NULL) {
+    if (id_node == nullptr) {
       BLI_assert(!"ID should always be valid");
     }
     else {
@@ -324,7 +324,7 @@ void DepsgraphRelationBuilder::add_customdata_mask(Object *object,
 void DepsgraphRelationBuilder::add_special_eval_flag(ID *id, uint32_t flag)
 {
   DEG::IDNode *id_node = graph_->find_id_node(id);
-  if (id_node == NULL) {
+  if (id_node == nullptr) {
     BLI_assert(!"ID should always be valid");
   }
   else {
@@ -350,7 +350,7 @@ Relation *DepsgraphRelationBuilder::add_time_relation(TimeSourceNode *timesrc,
                      (node_to) ? node_to->identifier().c_str() : "<None>",
                      description);
   }
-  return NULL;
+  return nullptr;
 }
 
 Relation *DepsgraphRelationBuilder::add_operation_relation(OperationNode *node_from,
@@ -371,7 +371,7 @@ Relation *DepsgraphRelationBuilder::add_operation_relation(OperationNode *node_f
                      (node_to) ? node_to->identifier().c_str() : "<None>",
                      description);
   }
-  return NULL;
+  return nullptr;
 }
 
 void DepsgraphRelationBuilder::add_particle_collision_relations(const OperationKey &key,
@@ -431,7 +431,7 @@ void DepsgraphRelationBuilder::add_particle_forcefield_relations(const Operation
 
       /* Absorption forces need collision relation. */
       if (add_absorption && (relation->pd->flag & PFIELD_VISIBILITY)) {
-        add_particle_collision_relations(key, object, NULL, "Force Absorption");
+        add_particle_collision_relations(key, object, nullptr, "Force Absorption");
       }
     }
 
@@ -468,7 +468,7 @@ void DepsgraphRelationBuilder::begin_build()
 
 void DepsgraphRelationBuilder::build_id(ID *id)
 {
-  if (id == NULL) {
+  if (id == nullptr) {
     return;
   }
   switch (GS(id->name)) {
@@ -482,10 +482,10 @@ void DepsgraphRelationBuilder::build_id(ID *id)
       build_camera((Camera *)id);
       break;
     case ID_GR:
-      build_collection(NULL, NULL, (Collection *)id);
+      build_collection(nullptr, nullptr, (Collection *)id);
       break;
     case ID_OB:
-      build_object(NULL, (Object *)id);
+      build_object(nullptr, (Object *)id);
       break;
     case ID_KE:
       build_shapekeys((Key *)id);
@@ -552,7 +552,7 @@ void DepsgraphRelationBuilder::build_collection(LayerCollection *from_layer_coll
                                                 Object *object,
                                                 Collection *collection)
 {
-  if (from_layer_collection != NULL) {
+  if (from_layer_collection != nullptr) {
     /* If we came from layer collection we don't go deeper, view layer
      * builder takes care of going deeper.
      *
@@ -563,17 +563,17 @@ void DepsgraphRelationBuilder::build_collection(LayerCollection *from_layer_coll
   }
   const bool group_done = built_map_.checkIsBuiltAndTag(collection);
   OperationKey object_transform_final_key(
-      object != NULL ? &object->id : NULL, NodeType::TRANSFORM, OperationCode::TRANSFORM_FINAL);
-  ComponentKey duplicator_key(object != NULL ? &object->id : NULL, NodeType::DUPLI);
+      object != nullptr ? &object->id : nullptr, NodeType::TRANSFORM, OperationCode::TRANSFORM_FINAL);
+  ComponentKey duplicator_key(object != nullptr ? &object->id : nullptr, NodeType::DUPLI);
   if (!group_done) {
     LISTBASE_FOREACH (CollectionObject *, cob, &collection->gobject) {
-      build_object(NULL, cob->ob);
+      build_object(nullptr, cob->ob);
     }
     LISTBASE_FOREACH (CollectionChild *, child, &collection->children) {
-      build_collection(NULL, NULL, child->collection);
+      build_collection(nullptr, nullptr, child->collection);
     }
   }
-  if (object != NULL) {
+  if (object != nullptr) {
     FOREACH_COLLECTION_VISIBLE_OBJECT_RECURSIVE_BEGIN (collection, ob, graph_->mode) {
       ComponentKey dupli_transform_key(&ob->id, NodeType::TRANSFORM);
       add_relation(dupli_transform_key, object_transform_final_key, "Dupligroup");
@@ -593,7 +593,7 @@ void DepsgraphRelationBuilder::build_collection(LayerCollection *from_layer_coll
 void DepsgraphRelationBuilder::build_object(Base *base, Object *object)
 {
   if (built_map_.checkIsBuiltAndTag(object)) {
-    if (base != NULL) {
+    if (base != nullptr) {
       build_object_flags(base, object);
     }
     return;
@@ -615,34 +615,34 @@ void DepsgraphRelationBuilder::build_object(Base *base, Object *object)
   /* Various flags, flushing from bases/collections. */
   build_object_flags(base, object);
   /* Parenting. */
-  if (object->parent != NULL) {
+  if (object->parent != nullptr) {
     /* Make sure parent object's relations are built. */
-    build_object(NULL, object->parent);
+    build_object(nullptr, object->parent);
     /* Parent relationship. */
     build_object_parent(object);
     /* Local -> parent. */
     add_relation(local_transform_key, parent_transform_key, "ObLocal -> ObParent");
   }
   /* Modifiers. */
-  if (object->modifiers.first != NULL) {
+  if (object->modifiers.first != nullptr) {
     BuilderWalkUserData data;
     data.builder = this;
     modifiers_foreachIDLink(object, modifier_walk, &data);
   }
   /* Grease Pencil Modifiers. */
-  if (object->greasepencil_modifiers.first != NULL) {
+  if (object->greasepencil_modifiers.first != nullptr) {
     BuilderWalkUserData data;
     data.builder = this;
     BKE_gpencil_modifiers_foreachIDLink(object, modifier_walk, &data);
   }
   /* Shader FX. */
-  if (object->shader_fx.first != NULL) {
+  if (object->shader_fx.first != nullptr) {
     BuilderWalkUserData data;
     data.builder = this;
     BKE_shaderfx_foreachIDLink(object, modifier_walk, &data);
   }
   /* Constraints. */
-  if (object->constraints.first != NULL) {
+  if (object->constraints.first != nullptr) {
     BuilderWalkUserData data;
     data.builder = this;
     BKE_constraints_id_loop(&object->constraints, constraint_walk, &data);
@@ -650,11 +650,11 @@ void DepsgraphRelationBuilder::build_object(Base *base, Object *object)
   /* Object constraints. */
   OperationKey object_transform_simulation_init_key(
       &object->id, NodeType::TRANSFORM, OperationCode::TRANSFORM_SIMULATION_INIT);
-  if (object->constraints.first != NULL) {
+  if (object->constraints.first != nullptr) {
     OperationKey constraint_key(
         &object->id, NodeType::TRANSFORM, OperationCode::TRANSFORM_CONSTRAINTS);
     /* Constraint relations. */
-    build_constraints(&object->id, NodeType::TRANSFORM, "", &object->constraints, NULL);
+    build_constraints(&object->id, NodeType::TRANSFORM, "", &object->constraints, nullptr);
     /* operation order */
     add_relation(base_op_key, constraint_key, "ObBase-> Constraint Stack");
     add_relation(constraint_key, final_transform_key, "ObConstraints -> Done");
@@ -678,15 +678,15 @@ void DepsgraphRelationBuilder::build_object(Base *base, Object *object)
   /* Object data. */
   build_object_data(object);
   /* Particle systems. */
-  if (object->particlesystem.first != NULL) {
+  if (object->particlesystem.first != nullptr) {
     build_particle_systems(object);
   }
   /* Proxy object to copy from. */
   build_object_proxy_from(object);
   build_object_proxy_group(object);
   /* Object dupligroup. */
-  if (object->instance_collection != NULL) {
-    build_collection(NULL, object, object->instance_collection);
+  if (object->instance_collection != nullptr) {
+    build_collection(nullptr, object, object->instance_collection);
   }
   /* Point caches. */
   build_object_pointcache(object);
@@ -700,11 +700,11 @@ void DepsgraphRelationBuilder::build_object(Base *base, Object *object)
 
 void DepsgraphRelationBuilder::build_object_proxy_from(Object *object)
 {
-  if (object->proxy_from == NULL) {
+  if (object->proxy_from == nullptr) {
     return;
   }
   /* Object is linked here (comes from the library). */
-  build_object(NULL, object->proxy_from);
+  build_object(nullptr, object->proxy_from);
   ComponentKey ob_transform_key(&object->proxy_from->id, NodeType::TRANSFORM);
   ComponentKey proxy_transform_key(&object->id, NodeType::TRANSFORM);
   add_relation(ob_transform_key, proxy_transform_key, "Proxy Transform");
@@ -712,11 +712,11 @@ void DepsgraphRelationBuilder::build_object_proxy_from(Object *object)
 
 void DepsgraphRelationBuilder::build_object_proxy_group(Object *object)
 {
-  if (object->proxy_group == NULL || object->proxy_group == object->proxy) {
+  if (object->proxy_group == nullptr || object->proxy_group == object->proxy) {
     return;
   }
   /* Object is local here (local in .blend file, users interacts with it). */
-  build_object(NULL, object->proxy_group);
+  build_object(nullptr, object->proxy_group);
   OperationKey proxy_group_eval_key(
       &object->proxy_group->id, NodeType::TRANSFORM, OperationCode::TRANSFORM_EVAL);
   OperationKey transform_eval_key(&object->id, NodeType::TRANSFORM, OperationCode::TRANSFORM_EVAL);
@@ -725,7 +725,7 @@ void DepsgraphRelationBuilder::build_object_proxy_group(Object *object)
 
 void DepsgraphRelationBuilder::build_object_flags(Base *base, Object *object)
 {
-  if (base == NULL) {
+  if (base == nullptr) {
     return;
   }
   OperationKey view_layer_done_key(
@@ -741,7 +741,7 @@ void DepsgraphRelationBuilder::build_object_flags(Base *base, Object *object)
 
 void DepsgraphRelationBuilder::build_object_data(Object *object)
 {
-  if (object->data == NULL) {
+  if (object->data == nullptr) {
     return;
   }
   ID *obdata_id = (ID *)object->data;
@@ -770,7 +770,7 @@ void DepsgraphRelationBuilder::build_object_data(Object *object)
       break;
     }
     case OB_ARMATURE:
-      if (ID_IS_LINKED(object) && object->proxy_from != NULL) {
+      if (ID_IS_LINKED(object) && object->proxy_from != nullptr) {
         build_proxy_rig(object);
       }
       else {
@@ -791,7 +791,7 @@ void DepsgraphRelationBuilder::build_object_data(Object *object)
       break;
   }
   Key *key = BKE_key_from_object(object);
-  if (key != NULL) {
+  if (key != nullptr) {
     ComponentKey geometry_key((ID *)object->data, NodeType::GEOMETRY);
     ComponentKey key_key(&key->id, NodeType::GEOMETRY);
     add_relation(key_key, geometry_key, "Shapekeys");
@@ -799,7 +799,7 @@ void DepsgraphRelationBuilder::build_object_data(Object *object)
   }
   /* Materials. */
   Material ***materials_ptr = give_matarar(object);
-  if (materials_ptr != NULL) {
+  if (materials_ptr != nullptr) {
     short *num_materials_ptr = give_totcolp(object);
     build_materials(*materials_ptr, *num_materials_ptr);
   }
@@ -1021,7 +1021,7 @@ void DepsgraphRelationBuilder::build_constraints(ID *id,
   for (bConstraint *con = (bConstraint *)constraints->first; con; con = con->next) {
     const bConstraintTypeInfo *cti = BKE_constraint_typeinfo_get(con);
     /* Invalid constraint type. */
-    if (cti == NULL) {
+    if (cti == nullptr) {
       continue;
     }
     /* Special case for camera tracking -- it doesn't use targets to
@@ -1048,7 +1048,7 @@ void DepsgraphRelationBuilder::build_constraints(ID *id,
       else if (cti->type == CONSTRAINT_TYPE_OBJECTSOLVER) {
         depends_on_camera = true;
       }
-      if (depends_on_camera && scene_->camera != NULL) {
+      if (depends_on_camera && scene_->camera != nullptr) {
         ComponentKey camera_key(&scene_->camera->id, NodeType::TRANSFORM);
         add_relation(camera_key, constraint_op_key, cti->name);
       }
@@ -1069,10 +1069,10 @@ void DepsgraphRelationBuilder::build_constraints(ID *id,
       }
     }
     else if (cti->get_constraint_targets) {
-      ListBase targets = {NULL, NULL};
+      ListBase targets = {nullptr, nullptr};
       cti->get_constraint_targets(con, &targets);
       LISTBASE_FOREACH (bConstraintTarget *, ct, &targets) {
-        if (ct->tar == NULL) {
+        if (ct->tar == nullptr) {
           continue;
         }
         if (ELEM(con->type, CONSTRAINT_TYPE_KINEMATIC, CONSTRAINT_TYPE_SPLINEIK)) {
@@ -1200,13 +1200,13 @@ void DepsgraphRelationBuilder::build_animdata(ID *id)
 void DepsgraphRelationBuilder::build_animdata_curves(ID *id)
 {
   AnimData *adt = BKE_animdata_from_id(id);
-  if (adt == NULL) {
+  if (adt == nullptr) {
     return;
   }
-  if (adt->action != NULL) {
+  if (adt->action != nullptr) {
     build_action(adt->action);
   }
-  if (adt->action == NULL && BLI_listbase_is_empty(&adt->nla_tracks)) {
+  if (adt->action == nullptr && BLI_listbase_is_empty(&adt->nla_tracks)) {
     return;
   }
   /* Ensure evaluation order from entry to exit. */
@@ -1218,20 +1218,20 @@ void DepsgraphRelationBuilder::build_animdata_curves(ID *id)
   /* Wire up dependency from action. */
   ComponentKey adt_key(id, NodeType::ANIMATION);
   /* Relation from action itself. */
-  if (adt->action != NULL) {
+  if (adt->action != nullptr) {
     ComponentKey action_key(&adt->action->id, NodeType::ANIMATION);
     add_relation(action_key, adt_key, "Action -> Animation");
   }
   /* Get source operations. */
   Node *node_from = get_node(adt_key);
-  BLI_assert(node_from != NULL);
-  if (node_from == NULL) {
+  BLI_assert(node_from != nullptr);
+  if (node_from == nullptr) {
     return;
   }
   OperationNode *operation_from = node_from->get_exit_operation();
-  BLI_assert(operation_from != NULL);
+  BLI_assert(operation_from != nullptr);
   /* Build relations from animation operation to properties it changes. */
-  if (adt->action != NULL) {
+  if (adt->action != nullptr) {
     build_animdata_curves_targets(id, adt_key, operation_from, &adt->action->curves);
   }
   LISTBASE_FOREACH (NlaTrack *, nlt, &adt->nla_tracks) {
@@ -1255,7 +1255,7 @@ void DepsgraphRelationBuilder::build_animdata_curves_targets(ID *id,
       continue;
     }
     Node *node_to = rna_node_query_.find_node(&ptr, prop, RNAPointerSource::ENTRY);
-    if (node_to == NULL) {
+    if (node_to == nullptr) {
       continue;
     }
     OperationNode *operation_to = node_to->get_entry_operation();
@@ -1289,7 +1289,7 @@ void DepsgraphRelationBuilder::build_animdata_nlastrip_targets(ID *id,
                                                                ListBase *strips)
 {
   LISTBASE_FOREACH (NlaStrip *, strip, strips) {
-    if (strip->act != NULL) {
+    if (strip->act != nullptr) {
       build_action(strip->act);
 
       ComponentKey action_key(&strip->act->id, NodeType::ANIMATION);
@@ -1297,7 +1297,7 @@ void DepsgraphRelationBuilder::build_animdata_nlastrip_targets(ID *id,
 
       build_animdata_curves_targets(id, adt_key, operation_from, &strip->act->curves);
     }
-    else if (strip->strips.first != NULL) {
+    else if (strip->strips.first != nullptr) {
       build_animdata_nlastrip_targets(id, adt_key, operation_from, &strip->strips);
     }
   }
@@ -1306,7 +1306,7 @@ void DepsgraphRelationBuilder::build_animdata_nlastrip_targets(ID *id,
 void DepsgraphRelationBuilder::build_animdata_drivers(ID *id)
 {
   AnimData *adt = BKE_animdata_from_id(id);
-  if (adt == NULL) {
+  if (adt == nullptr) {
     return;
   }
   ComponentKey adt_key(id, NodeType::ANIMATION);
@@ -1331,7 +1331,7 @@ void DepsgraphRelationBuilder::build_animdata_drivers(ID *id)
      *
      * TODO(sergey): Avoid liner lookup somehow. */
     if (fcu->array_index > 0) {
-      FCurve *fcu_prev = NULL;
+      FCurve *fcu_prev = nullptr;
       LISTBASE_FOREACH (FCurve *, fcu_candidate, &adt->drivers) {
         /* Writing to different RNA paths is  */
         const char *rna_path = fcu->rna_path ? fcu->rna_path : "";
@@ -1343,11 +1343,11 @@ void DepsgraphRelationBuilder::build_animdata_drivers(ID *id)
           continue;
         }
         /* Choose fcurve with highest possible array index. */
-        if (fcu_prev == NULL || fcu_candidate->array_index > fcu_prev->array_index) {
+        if (fcu_prev == nullptr || fcu_candidate->array_index > fcu_prev->array_index) {
           fcu_prev = fcu_candidate;
         }
       }
-      if (fcu_prev != NULL) {
+      if (fcu_prev != nullptr) {
         OperationKey prev_driver_key(id,
                                      NodeType::PARAMETERS,
                                      OperationCode::DRIVER,
@@ -1417,7 +1417,7 @@ void DepsgraphRelationBuilder::build_driver_data(ID *id, FCurve *fcu)
 {
   /* Validate the RNA path pointer just in case. */
   const char *rna_path = fcu->rna_path;
-  if (rna_path == NULL || rna_path[0] == '\0') {
+  if (rna_path == nullptr || rna_path[0] == '\0') {
     return;
   }
   /* Parse the RNA path to find the target property pointer. */
@@ -1447,16 +1447,16 @@ void DepsgraphRelationBuilder::build_driver_data(ID *id, FCurve *fcu)
     /* Drivers on armature-level bone settings (i.e. bbone stuff),
      * which will affect the evaluation of corresponding pose bones. */
     Bone *bone = (Bone *)property_entry_key.ptr.data;
-    if (bone != NULL) {
+    if (bone != nullptr) {
       /* Find objects which use this, and make their eval callbacks
        * depend on this. */
       for (IDNode *to_node : graph_->id_nodes) {
         if (GS(to_node->id_orig->name) == ID_OB) {
           Object *object = (Object *)to_node->id_orig;
           /* We only care about objects with pose data which use this. */
-          if (object->data == id_ptr && object->pose != NULL) {
+          if (object->data == id_ptr && object->pose != nullptr) {
             bPoseChannel *pchan = BKE_pose_channel_find_name(object->pose, bone->name);
-            if (pchan != NULL) {
+            if (pchan != nullptr) {
               OperationKey bone_key(
                   &object->id, NodeType::BONE, pchan->name, OperationCode::BONE_LOCAL);
               add_relation(driver_key, bone_key, "Arm Bone -> Driver -> Bone");
@@ -1484,14 +1484,14 @@ void DepsgraphRelationBuilder::build_driver_data(ID *id, FCurve *fcu)
       PointerRNA id_ptr;
       PointerRNA ptr;
       RNA_id_pointer_create(id, &id_ptr);
-      if (RNA_path_resolve_full(&id_ptr, fcu->rna_path, &ptr, NULL, NULL)) {
+      if (RNA_path_resolve_full(&id_ptr, fcu->rna_path, &ptr, nullptr, nullptr)) {
         if (id_ptr.owner_id != ptr.owner_id) {
           ComponentKey cow_key(ptr.owner_id, NodeType::COPY_ON_WRITE);
           add_relation(cow_key, driver_key, "Driven CoW -> Driver", RELATION_CHECK_BEFORE_ADD);
         }
       }
     }
-    if (property_entry_key.prop != NULL && RNA_property_is_idprop(property_entry_key.prop)) {
+    if (property_entry_key.prop != nullptr && RNA_property_is_idprop(property_entry_key.prop)) {
       RNAPathKey property_exit_key(id, rna_path, RNAPointerSource::EXIT);
       OperationKey parameters_key(id, NodeType::PARAMETERS, OperationCode::PARAMETERS_EVAL);
       add_relation(property_exit_key, parameters_key, "Driven Property -> Properties");
@@ -1513,16 +1513,16 @@ void DepsgraphRelationBuilder::build_driver_variables(ID *id, FCurve *fcu)
     /* Only used targets. */
     DRIVER_TARGETS_USED_LOOPER_BEGIN (dvar) {
       ID *target_id = dtar->id;
-      if (target_id == NULL) {
+      if (target_id == nullptr) {
         continue;
       }
       build_id(target_id);
       build_driver_id_property(target_id, dtar->rna_path);
       /* Look up the proxy - matches dtar_id_ensure_proxy_from during evaluation. */
-      Object *object = NULL;
+      Object *object = nullptr;
       if (GS(target_id->name) == ID_OB) {
         object = (Object *)target_id;
-        if (object->proxy_from != NULL) {
+        if (object->proxy_from != nullptr) {
           /* Redirect the target to the proxy, like in evaluation. */
           object = object->proxy_from;
           target_id = &object->id;
@@ -1535,7 +1535,7 @@ void DepsgraphRelationBuilder::build_driver_variables(ID *id, FCurve *fcu)
       if ((dtar->flag & DTAR_FLAG_STRUCT_REF) && (object && object->type == OB_ARMATURE) &&
           (dtar->pchan_name[0])) {
         bPoseChannel *target_pchan = BKE_pose_channel_find_name(object->pose, dtar->pchan_name);
-        if (target_pchan == NULL) {
+        if (target_pchan == nullptr) {
           continue;
         }
         OperationKey variable_key(
@@ -1556,7 +1556,7 @@ void DepsgraphRelationBuilder::build_driver_variables(ID *id, FCurve *fcu)
         OperationKey target_key(target_id, NodeType::TRANSFORM, OperationCode::TRANSFORM_FINAL);
         add_relation(target_key, driver_key, "Target -> Driver");
       }
-      else if (dtar->rna_path != NULL && dtar->rna_path[0] != '\0') {
+      else if (dtar->rna_path != nullptr && dtar->rna_path[0] != '\0') {
         RNAPathKey variable_exit_key(target_id, dtar->rna_path, RNAPointerSource::EXIT);
         if (RNA_pointer_is_null(&variable_exit_key.ptr)) {
           continue;
@@ -1568,7 +1568,7 @@ void DepsgraphRelationBuilder::build_driver_variables(ID *id, FCurve *fcu)
         add_relation(variable_exit_key, driver_key, "RNA Target -> Driver");
       }
       else {
-        /* If rna_path is NULL, and DTAR_FLAG_STRUCT_REF isn't set, this
+        /* If rna_path is nullptr, and DTAR_FLAG_STRUCT_REF isn't set, this
          * is an incomplete target reference, so nothing to do here. */
       }
     }
@@ -1578,7 +1578,7 @@ void DepsgraphRelationBuilder::build_driver_variables(ID *id, FCurve *fcu)
 
 void DepsgraphRelationBuilder::build_driver_id_property(ID *id, const char *rna_path)
 {
-  if (id == NULL || rna_path == NULL) {
+  if (id == nullptr || rna_path == nullptr) {
     return;
   }
   PointerRNA id_ptr, ptr;
@@ -1588,7 +1588,7 @@ void DepsgraphRelationBuilder::build_driver_id_property(ID *id, const char *rna_
   if (!RNA_path_resolve_full(&id_ptr, rna_path, &ptr, &prop, &index)) {
     return;
   }
-  if (prop == NULL) {
+  if (prop == nullptr) {
     return;
   }
   if (!RNA_property_is_idprop(prop)) {
@@ -1620,7 +1620,7 @@ void DepsgraphRelationBuilder::build_world(World *world)
   build_animdata(&world->id);
   build_parameters(&world->id);
   /* world's nodetree */
-  if (world->nodetree != NULL) {
+  if (world->nodetree != nullptr) {
     build_nodetree(world->nodetree);
     OperationKey ntree_key(
         &world->nodetree->id, NodeType::SHADING, OperationCode::MATERIAL_UPDATE);
@@ -1650,7 +1650,7 @@ void DepsgraphRelationBuilder::build_rigidbody(Scene *scene)
   LISTBASE_FOREACH (EffectorRelation *, effector_relation, effector_relations) {
     ComponentKey effector_transform_key(&effector_relation->ob->id, NodeType::TRANSFORM);
     add_relation(effector_transform_key, rb_init_key, "RigidBody Field");
-    if (effector_relation->pd != NULL) {
+    if (effector_relation->pd != nullptr) {
       const short shape = effector_relation->pd->shape;
       if (ELEM(shape, PFIELD_SHAPE_SURFACE, PFIELD_SHAPE_POINTS)) {
         ComponentKey effector_geometry_key(&effector_relation->ob->id, NodeType::GEOMETRY);
@@ -1659,8 +1659,8 @@ void DepsgraphRelationBuilder::build_rigidbody(Scene *scene)
     }
   }
   /* Objects. */
-  if (rbw->group != NULL) {
-    build_collection(NULL, NULL, rbw->group);
+  if (rbw->group != nullptr) {
+    build_collection(nullptr, nullptr, rbw->group);
     FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (rbw->group, object) {
       if (object->type != OB_MESH) {
         continue;
@@ -1680,7 +1680,7 @@ void DepsgraphRelationBuilder::build_rigidbody(Scene *scene)
       /* Geometry must be known to create the rigid body. RBO_MESH_BASE
        * uses the non-evaluated mesh, so then the evaluation is
        * unnecessary. */
-      if (object->rigidbody_object != NULL &&
+      if (object->rigidbody_object != nullptr &&
           object->rigidbody_object->mesh_source != RBO_MESH_BASE) {
         /* NOTE: We prefer this relation to be never killed, to avoid
          * access partially evaluated mesh from solver. */
@@ -1699,18 +1699,18 @@ void DepsgraphRelationBuilder::build_rigidbody(Scene *scene)
     FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
   }
   /* Constraints. */
-  if (rbw->constraints != NULL) {
+  if (rbw->constraints != nullptr) {
     FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (rbw->constraints, object) {
       RigidBodyCon *rbc = object->rigidbody_constraint;
-      if (rbc == NULL || rbc->ob1 == NULL || rbc->ob2 == NULL) {
-        /* When either ob1 or ob2 is NULL, the constraint doesn't
+      if (rbc == nullptr || rbc->ob1 == nullptr || rbc->ob2 == nullptr) {
+        /* When either ob1 or ob2 is nullptr, the constraint doesn't
          * work. */
         continue;
       }
       /* Make sure indirectly linked objects are fully built. */
-      build_object(NULL, object);
-      build_object(NULL, rbc->ob1);
-      build_object(NULL, rbc->ob2);
+      build_object(nullptr, object);
+      build_object(nullptr, rbc->ob1);
+      build_object(nullptr, rbc->ob2);
       /* final result of the constraint object's transform controls how
        * the constraint affects the physics sim for these objects. */
       ComponentKey trans_key(&object->id, NodeType::TRANSFORM);
@@ -1766,8 +1766,8 @@ void DepsgraphRelationBuilder::build_particle_systems(Object *object)
       add_particle_collision_relations(
           psys_key, object, part->collision_group, "Particle Collision");
     }
-    else if ((psys->flag & PSYS_HAIR_DYNAMICS) && psys->clmd != NULL &&
-             psys->clmd->coll_parms != NULL) {
+    else if ((psys->flag & PSYS_HAIR_DYNAMICS) && psys->clmd != nullptr &&
+             psys->clmd->coll_parms != nullptr) {
       add_particle_collision_relations(
           psys_key, object, psys->clmd->coll_parms->group, "Hair Collision");
     }
@@ -1775,17 +1775,17 @@ void DepsgraphRelationBuilder::build_particle_systems(Object *object)
     add_particle_forcefield_relations(
         psys_key, object, psys, part->effector_weights, part->type == PART_HAIR, "Particle Field");
     /* Boids .*/
-    if (part->boids != NULL) {
+    if (part->boids != nullptr) {
       LISTBASE_FOREACH (BoidState *, state, &part->boids->states) {
         LISTBASE_FOREACH (BoidRule *, rule, &state->rules) {
-          Object *ruleob = NULL;
+          Object *ruleob = nullptr;
           if (rule->type == eBoidRuleType_Avoid) {
             ruleob = ((BoidRuleGoalAvoid *)rule)->ob;
           }
           else if (rule->type == eBoidRuleType_FollowLeader) {
             ruleob = ((BoidRuleFollowLeader *)rule)->ob;
           }
-          if (ruleob != NULL) {
+          if (ruleob != nullptr) {
             ComponentKey ruleob_key(&ruleob->id, NodeType::TRANSFORM);
             add_relation(ruleob_key, psys_key, "Boid Rule");
           }
@@ -1795,11 +1795,11 @@ void DepsgraphRelationBuilder::build_particle_systems(Object *object)
     /* Keyed particle targets. */
     if (part->phystype == PART_PHYS_KEYED) {
       LISTBASE_FOREACH (ParticleTarget *, particle_target, &psys->targets) {
-        if (particle_target->ob == NULL || particle_target->ob == object) {
+        if (particle_target->ob == nullptr || particle_target->ob == object) {
           continue;
         }
         /* Make sure target object is pulled into the graph. */
-        build_object(NULL, particle_target->ob);
+        build_object(nullptr, particle_target->ob);
         /* Use geometry component, since that's where particles are
          * actually evaluated. */
         ComponentKey target_key(&particle_target->ob->id, NodeType::GEOMETRY);
@@ -1809,16 +1809,16 @@ void DepsgraphRelationBuilder::build_particle_systems(Object *object)
     /* Visualization. */
     switch (part->ren_as) {
       case PART_DRAW_OB:
-        if (part->instance_object != NULL) {
+        if (part->instance_object != nullptr) {
           /* Make sure object's relations are all built.  */
-          build_object(NULL, part->instance_object);
+          build_object(nullptr, part->instance_object);
           /* Build relation for the particle visualization. */
           build_particle_system_visualization_object(object, psys, part->instance_object);
         }
         break;
       case PART_DRAW_GR:
-        if (part->instance_collection != NULL) {
-          build_collection(NULL, NULL, part->instance_collection);
+        if (part->instance_collection != nullptr) {
+          build_collection(nullptr, nullptr, part->instance_collection);
           LISTBASE_FOREACH (CollectionObject *, go, &part->instance_collection->gobject) {
             build_particle_system_visualization_object(object, psys, go->ob);
           }
@@ -1851,7 +1851,7 @@ void DepsgraphRelationBuilder::build_particle_settings(ParticleSettings *part)
   /* Texture slots. */
   for (int mtex_index = 0; mtex_index < MAX_MTEX; mtex_index++) {
     MTex *mtex = part->mtex[mtex_index];
-    if (mtex == NULL || mtex->tex == NULL) {
+    if (mtex == nullptr || mtex->tex == nullptr) {
       continue;
     }
     build_texture(mtex->tex);
@@ -1862,7 +1862,7 @@ void DepsgraphRelationBuilder::build_particle_settings(ParticleSettings *part)
                  RELATION_FLAG_FLUSH_USER_EDIT_ONLY);
     /* TODO(sergey): Consider moving texture space handling to an own
      * function. */
-    if (mtex->texco == TEXCO_OBJECT && mtex->object != NULL) {
+    if (mtex->texco == TEXCO_OBJECT && mtex->object != nullptr) {
       ComponentKey object_key(&mtex->object->id, NodeType::TRANSFORM);
       add_relation(object_key, particle_settings_eval_key, "Particle Texture Space");
     }
@@ -1946,7 +1946,7 @@ void DepsgraphRelationBuilder::build_object_data_geometry(Object *object)
   Relation *rel = add_relation(scene_key, obdata_ubereval_key, "CoW Relation");
   rel->flag |= RELATION_FLAG_NO_FLUSH;
   /* Modifiers */
-  if (object->modifiers.first != NULL) {
+  if (object->modifiers.first != nullptr) {
     ModifierUpdateDepsgraphContext ctx = {};
     ctx.scene = scene_;
     ctx.object = object;
@@ -1964,7 +1964,7 @@ void DepsgraphRelationBuilder::build_object_data_geometry(Object *object)
     }
   }
   /* Grease Pencil Modifiers. */
-  if (object->greasepencil_modifiers.first != NULL) {
+  if (object->greasepencil_modifiers.first != nullptr) {
     ModifierUpdateDepsgraphContext ctx = {};
     ctx.scene = scene_;
     ctx.object = object;
@@ -1983,7 +1983,7 @@ void DepsgraphRelationBuilder::build_object_data_geometry(Object *object)
     }
   }
   /* Shader FX. */
-  if (object->shader_fx.first != NULL) {
+  if (object->shader_fx.first != nullptr) {
     ModifierUpdateDepsgraphContext ctx = {};
     ctx.scene = scene_;
     ctx.object = object;
@@ -2043,8 +2043,8 @@ void DepsgraphRelationBuilder::build_object_data_geometry(Object *object)
   /* Object data data-block. */
   build_object_data_geometry_datablock((ID *)object->data);
   Key *key = BKE_key_from_object(object);
-  if (key != NULL) {
-    if (key->adt != NULL) {
+  if (key != nullptr) {
+    if (key->adt != nullptr) {
       if (key->adt->action || key->adt->nla_tracks.first) {
         ComponentKey obdata_key((ID *)object->data, NodeType::GEOMETRY);
         ComponentKey adt_key(&key->id, NodeType::ANIMATION);
@@ -2077,7 +2077,7 @@ void DepsgraphRelationBuilder::build_object_data_geometry_datablock(ID *obdata)
   build_parameters(obdata);
   /* ShapeKeys. */
   Key *key = BKE_key_from_id(obdata);
-  if (key != NULL) {
+  if (key != nullptr) {
     build_shapekeys(key);
   }
   /* Link object data evaluation node to exit operation. */
@@ -2093,22 +2093,22 @@ void DepsgraphRelationBuilder::build_object_data_geometry_datablock(ID *obdata)
       break;
     case ID_CU: {
       Curve *cu = (Curve *)obdata;
-      if (cu->bevobj != NULL) {
+      if (cu->bevobj != nullptr) {
         ComponentKey bevob_geom_key(&cu->bevobj->id, NodeType::GEOMETRY);
         add_relation(bevob_geom_key, obdata_geom_eval_key, "Curve Bevel Geometry");
         ComponentKey bevob_key(&cu->bevobj->id, NodeType::TRANSFORM);
         add_relation(bevob_key, obdata_geom_eval_key, "Curve Bevel Transform");
-        build_object(NULL, cu->bevobj);
+        build_object(nullptr, cu->bevobj);
       }
-      if (cu->taperobj != NULL) {
+      if (cu->taperobj != nullptr) {
         ComponentKey taperob_key(&cu->taperobj->id, NodeType::GEOMETRY);
         add_relation(taperob_key, obdata_geom_eval_key, "Curve Taper");
-        build_object(NULL, cu->taperobj);
+        build_object(nullptr, cu->taperobj);
       }
-      if (cu->textoncurve != NULL) {
+      if (cu->textoncurve != nullptr) {
         ComponentKey textoncurve_key(&cu->textoncurve->id, NodeType::GEOMETRY);
         add_relation(textoncurve_key, obdata_geom_eval_key, "Text on Curve");
-        build_object(NULL, cu->textoncurve);
+        build_object(nullptr, cu->textoncurve);
       }
       break;
     }
@@ -2131,7 +2131,7 @@ void DepsgraphRelationBuilder::build_object_data_geometry_datablock(ID *obdata)
        * we need to rebuild the bGPDstroke->triangles caches). */
       for (int i = 0; i < gpd->totcol; i++) {
         Material *ma = gpd->mat[i];
-        if ((ma != NULL) && (ma->gp_style != NULL)) {
+        if ((ma != nullptr) && (ma->gp_style != nullptr)) {
           OperationKey material_key(&ma->id, NodeType::SHADING, OperationCode::MATERIAL_UPDATE);
           add_relation(material_key, geometry_key, "Material -> GP Data");
         }
@@ -2160,8 +2160,8 @@ void DepsgraphRelationBuilder::build_camera(Camera *camera)
   }
   build_animdata(&camera->id);
   build_parameters(&camera->id);
-  if (camera->dof.focus_object != NULL) {
-    build_object(NULL, camera->dof.focus_object);
+  if (camera->dof.focus_object != nullptr) {
+    build_object(nullptr, camera->dof.focus_object);
     ComponentKey camera_parameters_key(&camera->id, NodeType::PARAMETERS);
     ComponentKey dof_ob_key(&camera->dof.focus_object->id, NodeType::TRANSFORM);
     add_relation(dof_ob_key, camera_parameters_key, "Camera DOF");
@@ -2177,7 +2177,7 @@ void DepsgraphRelationBuilder::build_light(Light *lamp)
   build_animdata(&lamp->id);
   build_parameters(&lamp->id);
   /* light's nodetree */
-  if (lamp->nodetree != NULL) {
+  if (lamp->nodetree != nullptr) {
     build_nodetree(lamp->nodetree);
     ComponentKey lamp_parameters_key(&lamp->id, NodeType::PARAMETERS);
     ComponentKey nodetree_key(&lamp->nodetree->id, NodeType::SHADING);
@@ -2188,7 +2188,7 @@ void DepsgraphRelationBuilder::build_light(Light *lamp)
 
 void DepsgraphRelationBuilder::build_nodetree(bNodeTree *ntree)
 {
-  if (ntree == NULL) {
+  if (ntree == nullptr) {
     return;
   }
   if (built_map_.checkIsBuiltAndTag(ntree)) {
@@ -2200,7 +2200,7 @@ void DepsgraphRelationBuilder::build_nodetree(bNodeTree *ntree)
   /* nodetree's nodes... */
   LISTBASE_FOREACH (bNode *, bnode, &ntree->nodes) {
     ID *id = bnode->id;
-    if (id == NULL) {
+    if (id == nullptr) {
       continue;
     }
     ID_Type id_type = GS(id->name);
@@ -2220,7 +2220,7 @@ void DepsgraphRelationBuilder::build_nodetree(bNodeTree *ntree)
       add_relation(image_key, shading_key, "Image -> Node");
     }
     else if (id_type == ID_OB) {
-      build_object(NULL, (Object *)id);
+      build_object(nullptr, (Object *)id);
       ComponentKey object_transform_key(id, NodeType::TRANSFORM);
       add_relation(object_transform_key, shading_key, "Object Transform -> Node");
       if (object_have_geometry_component(reinterpret_cast<Object *>(id))) {
@@ -2235,8 +2235,8 @@ void DepsgraphRelationBuilder::build_nodetree(bNodeTree *ntree)
        *
        * On the one hand it's annoying to always pull it in, but on another hand it's also annoying
        * to have hardcoded node-type exception here. */
-      if (node_scene->camera != NULL) {
-        build_object(NULL, node_scene->camera);
+      if (node_scene->camera != nullptr) {
+        build_object(nullptr, node_scene->camera);
       }
     }
     else if (id_type == ID_TXT) {
@@ -2286,7 +2286,7 @@ void DepsgraphRelationBuilder::build_material(Material *material)
   build_animdata(&material->id);
   build_parameters(&material->id);
   /* material's nodetree */
-  if (material->nodetree != NULL) {
+  if (material->nodetree != nullptr) {
     build_nodetree(material->nodetree);
     OperationKey ntree_key(
         &material->nodetree->id, NodeType::SHADING, OperationCode::MATERIAL_UPDATE);
@@ -2299,7 +2299,7 @@ void DepsgraphRelationBuilder::build_material(Material *material)
 void DepsgraphRelationBuilder::build_materials(Material **materials, int num_materials)
 {
   for (int i = 0; i < num_materials; i++) {
-    if (materials[i] == NULL) {
+    if (materials[i] == nullptr) {
       continue;
     }
     build_material(materials[i]);
@@ -2319,7 +2319,7 @@ void DepsgraphRelationBuilder::build_texture(Tex *texture)
   build_nodetree(texture->nodetree);
   /* Special cases for different IDs which texture uses. */
   if (texture->type == TEX_IMAGE) {
-    if (texture->ima != NULL) {
+    if (texture->ima != nullptr) {
       build_image(texture->ima);
     }
   }
@@ -2396,7 +2396,7 @@ void DepsgraphRelationBuilder::build_mask(Mask *mask)
       for (int i = 0; i < spline->tot_point; i++) {
         MaskSplinePoint *point = &spline->points[i];
         MaskParent *parent = &point->parent;
-        if (parent == NULL || parent->id == NULL) {
+        if (parent == nullptr || parent->id == nullptr) {
           continue;
         }
         build_id(parent->id);
@@ -2448,7 +2448,7 @@ void DepsgraphRelationBuilder::build_speaker(Speaker *speaker)
   }
   build_animdata(&speaker->id);
   build_parameters(&speaker->id);
-  if (speaker->sound != NULL) {
+  if (speaker->sound != nullptr) {
     build_sound(speaker->sound);
     ComponentKey speaker_key(&speaker->id, NodeType::AUDIO);
     ComponentKey sound_key(&speaker->sound->id, NodeType::AUDIO);
@@ -2467,7 +2467,7 @@ void DepsgraphRelationBuilder::build_sound(bSound *sound)
 
 void DepsgraphRelationBuilder::build_scene_sequencer(Scene *scene)
 {
-  if (scene->ed == NULL) {
+  if (scene->ed == nullptr) {
     return;
   }
   build_scene_audio(scene);
@@ -2477,18 +2477,18 @@ void DepsgraphRelationBuilder::build_scene_sequencer(Scene *scene)
   Sequence *seq;
   bool has_audio_strips = false;
   SEQ_BEGIN (scene->ed, seq) {
-    if (seq->sound != NULL) {
+    if (seq->sound != nullptr) {
       build_sound(seq->sound);
       ComponentKey sound_key(&seq->sound->id, NodeType::AUDIO);
       add_relation(sound_key, sequencer_key, "Sound -> Sequencer");
       has_audio_strips = true;
     }
-    if (seq->scene != NULL) {
+    if (seq->scene != nullptr) {
       build_scene_parameters(seq->scene);
       /* This is to support 3D audio. */
       has_audio_strips = true;
     }
-    if (seq->type == SEQ_TYPE_SCENE && seq->scene != NULL) {
+    if (seq->type == SEQ_TYPE_SCENE && seq->scene != nullptr) {
       if (seq->flag & SEQ_SCENE_STRIPS) {
         build_scene_sequencer(seq->scene);
         ComponentKey sequence_scene_audio_key(&seq->scene->id, NodeType::AUDIO);
@@ -2518,7 +2518,7 @@ void DepsgraphRelationBuilder::build_scene_speakers(Scene * /*scene*/, ViewLayer
     if (object->type != OB_SPEAKER || !need_pull_base_into_graph(base)) {
       continue;
     }
-    build_object(NULL, base->object);
+    build_object(nullptr, base->object);
   }
 }
 
@@ -2544,7 +2544,7 @@ void DepsgraphRelationBuilder::build_nested_datablock(ID *owner, ID *id)
 
 void DepsgraphRelationBuilder::build_nested_nodetree(ID *owner, bNodeTree *ntree)
 {
-  if (ntree == NULL) {
+  if (ntree == nullptr) {
     return;
   }
   build_nested_datablock(owner, &ntree->id);
@@ -2552,7 +2552,7 @@ void DepsgraphRelationBuilder::build_nested_nodetree(ID *owner, bNodeTree *ntree
 
 void DepsgraphRelationBuilder::build_nested_shapekey(ID *owner, Key *key)
 {
-  if (key == NULL) {
+  if (key == nullptr) {
     return;
   }
   build_nested_datablock(owner, &key->id);
@@ -2609,7 +2609,7 @@ void DepsgraphRelationBuilder::build_copy_on_write_relations(IDNode *id_node)
     /* All entry operations of each component should wait for a proper
      * copy of ID. */
     OperationNode *op_entry = comp_node->get_entry_operation();
-    if (op_entry != NULL) {
+    if (op_entry != nullptr) {
       Relation *rel = graph_->add_new_relation(op_cow, op_entry, "CoW Dependency");
       rel->flag |= rel_flag;
     }
@@ -2655,7 +2655,7 @@ void DepsgraphRelationBuilder::build_copy_on_write_relations(IDNode *id_node)
   if (GS(id_orig->name) == ID_OB) {
     Object *object = (Object *)id_orig;
     ID *object_data_id = (ID *)object->data;
-    if (object_data_id != NULL) {
+    if (object_data_id != nullptr) {
       if (deg_copy_on_write_is_needed(object_data_id)) {
         OperationKey data_copy_on_write_key(
             object_data_id, NodeType::COPY_ON_WRITE, OperationCode::COPY_ON_WRITE);
@@ -2676,8 +2676,8 @@ void DepsgraphRelationBuilder::build_copy_on_write_relations(IDNode *id_node)
    * to their RNA path. This means that action must be copied prior to the ID's copy-on-write,
    * otherwise depsgraph might try to access freed data. */
   AnimData *animation_data = BKE_animdata_from_id(id_orig);
-  if (animation_data != NULL) {
-    if (animation_data->action != NULL) {
+  if (animation_data != nullptr) {
+    if (animation_data->action != nullptr) {
       OperationKey action_copy_on_write_key(
           &animation_data->action->id, NodeType::COPY_ON_WRITE, OperationCode::COPY_ON_WRITE);
       add_relation(action_copy_on_write_key,
@@ -2698,7 +2698,7 @@ void DepsgraphRelationBuilder::modifier_walk(void *user_data,
 {
   BuilderWalkUserData *data = (BuilderWalkUserData *)user_data;
   ID *id = *idpoin;
-  if (id == NULL) {
+  if (id == nullptr) {
     return;
   }
   data->builder->build_id(id);
@@ -2711,7 +2711,7 @@ void DepsgraphRelationBuilder::constraint_walk(bConstraint * /*con*/,
 {
   BuilderWalkUserData *data = (BuilderWalkUserData *)user_data;
   ID *id = *idpoin;
-  if (id == NULL) {
+  if (id == nullptr) {
     return;
   }
   data->builder->build_id(id);