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xo-pyutil: pycaller: provide type-erased factory functions

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This commit is contained in:
Roland Conybeare 2024-06-17 19:33:44 -04:00
commit debc2db34c
1 changed files with 15 additions and 3 deletions
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18
include/xo/pyutil/pycaller.hpp
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@ -12,6 +12,9 @@
namespace xo {
namespace pyutil {
struct pycaller_base {
using void_function_type = void (*)();
using factory_function_type = pycaller_base*(*)(void_function_type);
virtual ~pycaller_base() = default;
static pybind11::module & declare_once(pybind11::module & m) {
@ -40,8 +43,11 @@ namespace xo {
struct pycaller<Retval> : public pycaller_base {
using self_type = pycaller<Retval>;
using function_type = Retval (*)();
using void_function_type = void (*)();
pycaller(function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
pycaller(void_function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
static pycaller_base * make(void_function_type addr) { return new pycaller(addr); }
static pybind11::module & declare_once(pybind11::module & m) {
static bool s_once = false;
@ -68,8 +74,11 @@ namespace xo {
struct pycaller<Retval, Arg1> : public pycaller_base {
using self_type = pycaller<Retval, Arg1>;
using function_type = Retval (*)(Arg1);
using void_function_type = void (*)();
pycaller(function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
pycaller(void_function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
static pycaller_base * make(void_function_type addr) { return new pycaller(addr); }
static pybind11::module & declare_once(pybind11::module & m) {
static bool s_once = false;
@ -99,8 +108,11 @@ namespace xo {
struct pycaller<Retval, Arg1, Arg2> : public pycaller_base {
using self_type = pycaller<Retval, Arg1, Arg2>;
using function_type = Retval (*)(Arg1, Arg2);
using void_function_type = void (*)();
pycaller(function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
pycaller(void_function_type addr) : fptr_{reinterpret_cast<function_type>(addr)} {}
static pycaller_base * make(void_function_type addr) { return new pycaller(addr); }
static pybind11::module & declare_once(pybind11::module & m) {
static bool s_once = false;