Cleanup: Clang tidy

Use using instead of typedef, remove redundant string init,
use "empty", address qualified auto, use nullptr.

5 files changed, 12 insertions, 12 deletions

diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
index 6986ef7d9ee..c5def69a70f 100644
--- a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_gpencil.cc
@@ -35,7 +35,7 @@ void GPencilBackup::restore_to_gpencil(bGPdata *gpd)
   }
   /* Doing a copy-on-write copies the update cache pointer. Make sure to reset it
    * to NULL as we should never use the update cache from eval data. */
-  gpd->runtime.update_cache = NULL;
+  gpd->runtime.update_cache = nullptr;
   /* Make sure to update the original runtime pointers in the eval data. */
   BKE_gpencil_data_update_orig_pointers(gpd_orig, gpd);
 }
diff --git a/source/blender/editors/space_node/node_select.cc b/source/blender/editors/space_node/node_select.cc
index 9d30ebca6d6..a355487057c 100644
--- a/source/blender/editors/space_node/node_select.cc
+++ b/source/blender/editors/space_node/node_select.cc
@@ -730,7 +730,7 @@ static int node_box_select_exec(bContext *C, wmOperator *op)
         /* Frame nodes are selectable by their borders (including their whole rect - as for other
          * nodes - would prevent selection of other nodes inside that frame. */
         const rctf frame_inside = node_frame_rect_inside(*node);
-        if (BLI_rctf_isect(&rectf, &node->totr, NULL) &&
+        if (BLI_rctf_isect(&rectf, &node->totr, nullptr) &&
             !BLI_rctf_inside_rctf(&frame_inside, &rectf)) {
           nodeSetSelected(node, select);
           is_inside = true;
@@ -932,7 +932,7 @@ static bool do_lasso_select_node(bContext *C,
         BLI_rctf_rcti_copy(&rectf, &rect);
         UI_view2d_region_to_view_rctf(&region->v2d, &rectf, &rectf);
         const rctf frame_inside = node_frame_rect_inside(*node);
-        if (BLI_rctf_isect(&rectf, &node->totr, NULL) &&
+        if (BLI_rctf_isect(&rectf, &node->totr, nullptr) &&
             !BLI_rctf_inside_rctf(&frame_inside, &rectf)) {
           nodeSetSelected(node, select);
           changed = true;
diff --git a/source/blender/gpu/opengl/gl_shader.cc b/source/blender/gpu/opengl/gl_shader.cc
index f6b1f5184bd..31f657a63b2 100644
--- a/source/blender/gpu/opengl/gl_shader.cc
+++ b/source/blender/gpu/opengl/gl_shader.cc
@@ -499,7 +499,7 @@ static std::string main_function_wrapper(std::string &pre_main, std::string &pos
 std::string GLShader::vertex_interface_declare(const ShaderCreateInfo &info) const
 {
   std::stringstream ss;
-  std::string post_main = "";
+  std::string post_main;
 
   ss << "\n/* Inputs. */\n";
   for (const ShaderCreateInfo::VertIn &attr : info.vertex_inputs_) {
@@ -532,7 +532,7 @@ std::string GLShader::vertex_interface_declare(const ShaderCreateInfo &info) con
   ss << "\n";
 
   if (post_main.empty() == false) {
-    std::string pre_main = "";
+    std::string pre_main;
     ss << main_function_wrapper(pre_main, post_main);
   }
   return ss.str();
@@ -541,7 +541,7 @@ std::string GLShader::vertex_interface_declare(const ShaderCreateInfo &info) con
 std::string GLShader::fragment_interface_declare(const ShaderCreateInfo &info) const
 {
   std::stringstream ss;
-  std::string pre_main = "";
+  std::string pre_main;
 
   ss << "\n/* Interfaces. */\n";
   const Vector<StageInterfaceInfo *> &in_interfaces = (info.geometry_source_.is_empty()) ?
@@ -595,7 +595,7 @@ std::string GLShader::fragment_interface_declare(const ShaderCreateInfo &info) c
   ss << "\n";
 
   if (pre_main.empty() == false) {
-    std::string post_main = "";
+    std::string post_main;
     ss << main_function_wrapper(pre_main, post_main);
   }
   return ss.str();
@@ -715,7 +715,7 @@ std::string GLShader::workaround_geometry_shader_source_create(
     ss << "  gl_Layer = gpu_Layer[0];\n";
   }
   for (auto i : IndexRange(3)) {
-    for (auto iface : info_modified.vertex_out_interfaces_) {
+    for (StageInterfaceInfo *iface : info_modified.vertex_out_interfaces_) {
       for (auto &inout : iface->inouts) {
         ss << "  " << iface->instance_name << "_out." << inout.name;
         ss << " = " << iface->instance_name << "_in[" << i << "]." << inout.name << ";\n";
diff --git a/source/blender/io/alembic/intern/abc_reader_archive.cc b/source/blender/io/alembic/intern/abc_reader_archive.cc
index 73ed7a80e52..f826da0daa4 100644
--- a/source/blender/io/alembic/intern/abc_reader_archive.cc
+++ b/source/blender/io/alembic/intern/abc_reader_archive.cc
@@ -67,7 +67,7 @@ ArchiveReader *ArchiveReader::get(struct Main *bmain, const std::vector<const ch
   std::vector<ArchiveReader *> readers;
 
   for (const char *filename : filenames) {
-    auto reader = new ArchiveReader(bmain, filename);
+    ArchiveReader *reader = new ArchiveReader(bmain, filename);
 
     if (!reader->valid()) {
       delete reader;
@@ -77,7 +77,7 @@ ArchiveReader *ArchiveReader::get(struct Main *bmain, const std::vector<const ch
     readers.push_back(reader);
   }
 
-  if (readers.size() == 0) {
+  if (readers.empty()) {
     return nullptr;
   }
 
@@ -92,7 +92,7 @@ ArchiveReader::ArchiveReader(const std::vector<ArchiveReader *> &readers) : m_re
 {
   Alembic::AbcCoreLayer::ArchiveReaderPtrs archives;
 
-  for (auto &reader : readers) {
+  for (ArchiveReader *reader : readers) {
     archives.push_back(reader->m_archive.getPtr());
   }
 
diff --git a/source/blender/io/usd/intern/usd_writer_material.cc b/source/blender/io/usd/intern/usd_writer_material.cc
index 6cdf6cc3b19..09cb0d07493 100644
--- a/source/blender/io/usd/intern/usd_writer_material.cc
+++ b/source/blender/io/usd/intern/usd_writer_material.cc
@@ -82,7 +82,7 @@ struct InputSpec {
 };
 
 /* Map Blender socket names to USD Preview Surface InputSpec structs. */
-typedef std::map<std::string, InputSpec> InputSpecMap;
+using InputSpecMap = std::map<std::string, InputSpec>;
 
 /* Static function forward declarations. */
 static pxr::UsdShadeShader create_usd_preview_shader(const USDExporterContext &usd_export_context,