zhangmeng
2021-07-02 056f71f24cefaf88f2a93714c6678c03ed5f1e0e
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// Copyright Jim Bosch 2010-2012.
// Copyright Stefan Seefeld 2016.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
 
#ifndef boost_python_numpy_numpy_object_mgr_traits_hpp_
#define boost_python_numpy_numpy_object_mgr_traits_hpp_
 
#include <boost/python/numpy/config.hpp>
 
/**
 *  @brief Macro that specializes object_manager_traits by requiring a 
 *         source-file implementation of get_pytype().
 */
 
#define NUMPY_OBJECT_MANAGER_TRAITS(manager)                            \
template <>                                \
struct BOOST_NUMPY_DECL object_manager_traits<manager>            \
{                                    \
  BOOST_STATIC_CONSTANT(bool, is_specialized = true);            \
  static inline python::detail::new_reference adopt(PyObject* x)    \
  {                                    \
    return python::detail::new_reference(python::pytype_check((PyTypeObject*)get_pytype(), x)); \
  }                                    \
  static bool check(PyObject* x)                    \
  {                                    \
    return ::PyObject_IsInstance(x, (PyObject*)get_pytype());        \
  }                                    \
  static manager* checked_downcast(PyObject* x)                \
  {                                    \
    return python::downcast<manager>((checked_downcast_impl)(x, (PyTypeObject*)get_pytype())); \
  }                                    \
  static PyTypeObject const * get_pytype();                \
}
 
#endif