Add python module for reflectometry constansts

Framework/PythonInterface/mantid/CMakeLists.txt

@@ -22,6 +22,7 @@ add_subdirectory(geometry)
 add_subdirectory(api)
 add_subdirectory(dataobjects)
 add_subdirectory(_plugins)
+add_subdirectory(utils/reflectometry)
 
 # Defines the target the will cause the Python bundle to be copied
 set(PYBUNDLE_POST_TARGET PythonModule)

Framework/PythonInterface/mantid/utils/reflectometry/CMakeLists.txt

@@ -0,0 +1,25 @@
+# _polarization_helpers Python module
+
+set(MODULE_TEMPLATE src/polarization_helpers.cpp.in)
+
+# Files containing export definitions, these are automatically processed -- Do NOT sort this list. The order defines the
+# order in which the export definitions occur and some depend on their base classes being exported first --
+set(EXPORT_FILES src/Exports/PolarizationCorrectionHelpers.cpp)
+
+set(MODULE_DEFINITION ${CMAKE_CURRENT_BINARY_DIR}/polarization_helpers.cpp)
+create_module(${MODULE_TEMPLATE} ${MODULE_DEFINITION} ${EXPORT_FILES})
+
+# Create the target for this directory
+add_library(PythonReflHelpersModule ${MODULE_DEFINITION} ${EXPORT_FILES} ${PYTHON_INSTALL_FILES})
+add_library(PythonReflectometryHelpersModule ALIAS PythonReflHelpersModule)
+
+set_python_properties(PythonReflHelpersModule _polarization_helpers)
+
+# Add the required dependencies
+target_link_libraries(PythonReflHelpersModule PRIVATE Mantid::Algorithms Mantid::PythonInterfaceCore)
+
+# Installation settings
+set_target_properties(PythonReflHelpersModule PROPERTIES INSTALL_RPATH "${EXT_INSTALL_RPATH}")
+mtd_install_shared_library(
+  TARGETS PythonReflHelpersModule DESTINATION ${Python_SITELIB_RELPATH}/mantid/polarization_helpers.cpp
+)

Framework/PythonInterface/mantid/utils/reflectometry/__init__.py

@@ -1,6 +1,13 @@
 # Mantid Repository : https://github.com/mantidproject/mantid
 #
-# Copyright © 2023 ISIS Rutherford Appleton Laboratory UKRI,
+# Copyright © 2024 ISIS Rutherford Appleton Laboratory UKRI,
 #   NScD Oak Ridge National Laboratory, European Spallation Source,
 #   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
 # SPDX - License - Identifier: GPL - 3.0 +
+
+###############################################################################
+# Load the C++ library and register the C++ class exports
+###############################################################################
+from mantid.utils import import_mantid_cext
+
+import_mantid_cext("._polarization_helpers", "mantid.utils.reflectometry", globals())

Framework/PythonInterface/mantid/utils/reflectometry/src/Exports/PolarizationCorrectionHelpers.cpp

@@ -0,0 +1,26 @@
+// Mantid Repository : https://github.com/mantidproject/mantid
+//
+// Copyright © 2024 ISIS Rutherford Appleton Laboratory UKRI,
+//   NScD Oak Ridge National Laboratory, European Spallation Source,
+//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
+// SPDX - License - Identifier: GPL - 3.0 +
+
+#include "MantidAlgorithms/PolarizationCorrections/PolarizationCorrectionsHelpers.h"
+#include <boost/python/class.hpp>
+
+namespace {
+class SpinStatesORSO {};
+} // namespace
+
+void export_SpinStatesORSO() {
+  using namespace boost::python;
+
+  class_<SpinStatesORSO>("SpinStatesORSO")
+      .def_readonly("PP", &Mantid::Algorithms::SpinStatesORSO::PP)
+      .def_readonly("PM", &Mantid::Algorithms::SpinStatesORSO::PM)
+      .def_readonly("MP", &Mantid::Algorithms::SpinStatesORSO::MP)
+      .def_readonly("MM", &Mantid::Algorithms::SpinStatesORSO::MM)
+      .def_readonly("PO", &Mantid::Algorithms::SpinStatesORSO::PO)
+      .def_readonly("MO", &Mantid::Algorithms::SpinStatesORSO::MO)
+      .def_readonly("LOG_NAME", &Mantid::Algorithms::SpinStatesORSO::LOG_NAME);
+}

Framework/PythonInterface/mantid/utils/reflectometry/src/polarization_helpers.cpp.in

@@ -0,0 +1,20 @@
+// Mantid Repository : https://github.com/mantidproject/mantid
+//
+// Copyright © 2024 ISIS Rutherford Appleton Laboratory UKRI,
+//   NScD Oak Ridge National Laboratory, European Spallation Source,
+//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
+// SPDX - License - Identifier: GPL - 3.0 +
+
+@AUTO_GENERATE_WARNING@
+/********** Source = polarization_helpers.cpp.in **********************************************************/
+
+#include <boost/python/def.hpp>
+#include <boost/python/module.hpp>
+
+// Forward declare
+@EXPORT_DECLARE@
+
+BOOST_PYTHON_MODULE(_polarization_helpers)
+{
+@EXPORT_FUNCTIONS@
+}