expose-callbacks.cpp

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#include "proxsuite-nlp/python/fwd.hpp"
#include "proxsuite-nlp/helpers-base.hpp"
#include "proxsuite-nlp/helpers/history-callback.hpp"
 
namespace proxsuite {
namespace nlp {
namespace python {
 
struct CallbackWrapper : helpers::base_callback<context::Scalar>,
                         bp::wrapper<helpers::base_callback<context::Scalar>> {
  CallbackWrapper() = default;
  void call(const context::Workspace &w, const context::Results &r) {
    this->get_override("call")(w, r);
  }
};
 
void exposeCallbacks() {
  using context::Scalar;
  using callback_t = helpers::base_callback<Scalar>;
 
  bp::register_ptr_to_python<shared_ptr<callback_t>>();
 
  bp::class_<CallbackWrapper, shared_ptr<CallbackWrapper>, boost::noncopyable>(
      "BaseCallback", "Base callback for solvers.", bp::init<>())
      .def("call", bp::pure_virtual(&CallbackWrapper::call),
           bp::args("self", "workspace", "results"));
 
  {
    using history_storage_t =
        decltype(helpers::history_callback<Scalar>::storage);
 
    bp::scope in_history =
        bp::class_<helpers::history_callback<Scalar>, bp::bases<callback_t>>(
            "HistoryCallback", "Store the history of solver's variables.",
            bp::init<bool, bool, bool>((bp::arg("store_pd_vars") = true,
                                        bp::arg("store_values") = true,
                                        bp::arg("store_residuals") = true)))
            .def_readonly("storage",
                          &helpers::history_callback<Scalar>::storage);
 
    bp::class_<history_storage_t, shared_ptr<history_storage_t>>(
        "history_storage")
        .def_readonly("xs", &history_storage_t::xs)
        .def_readonly("lams", &history_storage_t::lams)
        .def_readonly("values", &history_storage_t::values)
        .def_readonly("prim_infeas", &history_storage_t::prim_infeas)
        .def_readonly("dual_infeas", &history_storage_t::dual_infeas)
        .def_readonly("ls_alphas", &history_storage_t::ls_alphas)
        .def_readonly("ls_values", &history_storage_t::ls_values)
        .def_readonly("alphas", &history_storage_t::alphas)
        .def_readonly("dmerit_dir", &history_storage_t::dmerit_dir);
  }
}
} // namespace python
} // namespace nlp
} // namespace proxsuite