UI: add back Layout.introspect

Add back this function, removed 2e14b7fb97.

Useful for checking operators used in menus.

source/blender/python/intern/CMakeLists.txt

@@ -79,6 +79,7 @@ set(SRC
   bpy_rna_gizmo.c
   bpy_rna_id_collection.c
   bpy_rna_types_capi.c
+  bpy_rna_ui.c
   bpy_traceback.c
   bpy_utils_previews.c
   bpy_utils_units.c
@@ -116,6 +117,7 @@ set(SRC
   bpy_rna_gizmo.h
   bpy_rna_id_collection.h
   bpy_rna_types_capi.h
+  bpy_rna_ui.h
   bpy_traceback.h
   bpy_utils_previews.h
   bpy_utils_units.h

source/blender/python/intern/bpy_rna.c

@@ -9010,11 +9010,12 @@ void pyrna_struct_type_extend_capi(struct StructRNA *srna,
         py_method = PyClassMethod_New(cfunc);
         Py_DECREF(cfunc);
       }
-      else {
-        /* Currently only static and class methods are used. */
-        BLI_assert(method->ml_flags & METH_STATIC);
+      else if (method->ml_flags & METH_STATIC) {
         py_method = PyCFunction_New(method, NULL);
       }
+      else {
+        py_method = PyDescr_NewMethod(type, method);
+      }
 
       const int err = PyDict_SetItemString(dict, method->ml_name, py_method);
       Py_DECREF(py_method);

source/blender/python/intern/bpy_rna_types_capi.c

@@ -38,6 +38,7 @@
 #include "bpy_rna_callback.h"
 #include "bpy_rna_id_collection.h"
 #include "bpy_rna_types_capi.h"
+#include "bpy_rna_ui.h"
 
 #include "../generic/py_capi_utils.h"
 
@@ -72,6 +73,17 @@ static struct PyMethodDef pyrna_blenddatalibraries_methods[] = {
 
 /** \} */
 
+/* -------------------------------------------------------------------- */
+/** \name UI Layout
+ * \{ */
+
+static struct PyMethodDef pyrna_uilayout_methods[] = {
+    {NULL, NULL, 0, NULL}, /* #BPY_rna_uilayout_introspect_method_def */
+    {NULL, NULL, 0, NULL},
+};
+
+/** \} */
+
 /* -------------------------------------------------------------------- */
 /** \name Window Manager Clipboard Property
  *
@@ -205,6 +217,11 @@ void BPY_rna_types_extend_capi(void)
   BLI_assert(ARRAY_SIZE(pyrna_blenddatalibraries_methods) == 3);
   pyrna_struct_type_extend_capi(&RNA_BlendDataLibraries, pyrna_blenddatalibraries_methods, NULL);
 
+  /* uiLayout */
+  ARRAY_SET_ITEMS(pyrna_uilayout_methods, BPY_rna_uilayout_introspect_method_def);
+  BLI_assert(ARRAY_SIZE(pyrna_uilayout_methods) == 2);
+  pyrna_struct_type_extend_capi(&RNA_UILayout, pyrna_uilayout_methods, NULL);
+
   /* Space */
   pyrna_struct_type_extend_capi(&RNA_Space, pyrna_space_methods, NULL);
 

source/blender/python/intern/bpy_rna_ui.c

@@ -0,0 +1,58 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup pythonintern
+ *
+ * This adds helpers to #uiLayout which can't be added easily to RNA it's self.
+ */
+
+#include <Python.h>
+
+#include "MEM_guardedalloc.h"
+
+#include "../generic/py_capi_utils.h"
+
+#include "UI_interface.h"
+
+#include "bpy_rna.h"
+
+PyDoc_STRVAR(bpy_rna_uilayout_introspect_doc,
+             ".. method:: introspect()\n"
+             "\n"
+             "   Return a dictionary containing a textual representation of the UI layout.\n");
+static PyObject *bpy_rna_uilayout_introspect(PyObject *self)
+{
+  BPy_StructRNA *pyrna = (BPy_StructRNA *)self;
+  uiLayout *layout = pyrna->ptr.data;
+
+  const char *expr = UI_layout_introspect(layout);
+  PyObject *main_mod = NULL;
+  PyC_MainModule_Backup(&main_mod);
+  PyObject *py_dict = PyC_DefaultNameSpace("<introspect>");
+  PyObject *result = PyRun_String(expr, Py_eval_input, py_dict, py_dict);
+  MEM_freeN((void *)expr);
+  Py_DECREF(py_dict);
+  PyC_MainModule_Restore(main_mod);
+  return result;
+}
+
+PyMethodDef BPY_rna_uilayout_introspect_method_def = {
+    "introspect",
+    (PyCFunction)bpy_rna_uilayout_introspect,
+    METH_NOARGS,
+    bpy_rna_uilayout_introspect_doc,
+};

source/blender/python/intern/bpy_rna_ui.h

@@ -0,0 +1,31 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup pythonintern
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern PyMethodDef BPY_rna_uilayout_introspect_method_def;
+
+#ifdef __cplusplus
+}
+#endif