refactor(python/composition): updated python comp bindings to use register model

src/python/composition/bindings.cpp

@@ -7,6 +7,8 @@
 #include "composition.h"
 #include "atomicSpecies.h"
 
+#include "bindings.h"
+
 namespace py = pybind11;
 
 std::string sv_to_string(std::string_view sv) {
@@ -19,12 +21,8 @@ std::string get_ostream_str(const composition::Composition& comp) {
      return oss.str();
 }
 
-PYBIND11_MODULE(fourdsse_bindings, m) { // Module name must match meson.build
-    m.doc() = "Python bindings for the 4DSSE project"; // Optional module docstring
-
-    auto comp_submodule = m.def_submodule("composition", "Bindings for the Composition module");
-    auto chem_submodule = m.def_submodule("species", "Bindings for the Chemical Species module");
 
+void register_comp_bindings(pybind11::module &comp_submodule) {
     // --- Bindings for composition and species module ---
     py::class_<composition::GlobalComposition>(comp_submodule, "GlobalComposition")
         .def_readonly("specificNumberDensity", &composition::GlobalComposition::specificNumberDensity)
@@ -135,6 +133,11 @@ PYBIND11_MODULE(fourdsse_bindings, m) { // Module name must match meson.build
              return get_ostream_str(comp); // Use helper for C++ operator<<
          });
 
+
+
+}
+
+void register_species_bindings(pybind11::module &chem_submodule) {
      // --- Bindings for species module ---
      py::class_<chemSpecies::Species>(chem_submodule, "Species")
          .def("mass", &chemSpecies::Species::mass, "Get atomic mass (amu)")
@@ -157,6 +160,4 @@ PYBIND11_MODULE(fourdsse_bindings, m) { // Module name must match meson.build
           });
 
      chem_submodule.attr("species") = py::cast(chemSpecies::species); // Expose the species map
-
-
 }

src/python/composition/bindings.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <pybind11/pybind11.h>
+
+void register_comp_bindings(pybind11::module &m);
+void register_species_bindings(pybind11::module &m);