Function ConvertFunc

qrenderdoc/Code/pyrenderdoc/function_conversion.h:285–307

template <typename funcType>
funcType ConvertFunc(const char *funcname, PyObject *func, ExceptionHandler exHandle)
{
  // allow None to indicate no callback
  if(Py_IsNone(func))
    return funcType();

  // add a reference to the global object so it stays alive while we execute, in case this is an
  // async call
  PyObject *global_internal_handle = GetCurrentGlobalHandle();

  // process any dangling functions that may need to be cleared up
  ProcessDecRefQueue();

  // create a copy that will keep the function object alive as long as the lambda is
  PyObjectRefCounter funcptr(func);

  return [global_internal_handle, funcname, funcptr, exHandle](auto... param) {
    ScopedFuncCall gil(global_internal_handle);

    varfunc<typename funcType::result_type, decltype(param)...> f(funcname, param...);
    return f.call(funcname, funcptr.obj, global_internal_handle, exHandle);
  };
}