/usr/include/boost/python/converter/return_from_python.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 | // Copyright David Abrahams 2002.
// 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 RETURN_FROM_PYTHON_DWA200265_HPP
# define RETURN_FROM_PYTHON_DWA200265_HPP
# include <boost/python/converter/from_python.hpp>
# include <boost/python/converter/rvalue_from_python_data.hpp>
# include <boost/python/converter/registered.hpp>
# include <boost/python/converter/registered_pointee.hpp>
# include <boost/python/converter/object_manager.hpp>
# include <boost/python/detail/void_ptr.hpp>
# include <boost/python/detail/void_return.hpp>
# include <boost/python/errors.hpp>
# include <boost/python/handle.hpp>
# include <boost/type_traits/has_trivial_copy.hpp>
# include <boost/mpl/and.hpp>
# include <boost/mpl/bool.hpp>
namespace boost { namespace python { namespace converter {
template <class T> struct is_object_manager;
namespace detail
{
template <class T>
struct return_pointer_from_python
{
typedef T result_type;
T operator()(PyObject*) const;
};
template <class T>
struct return_reference_from_python
{
typedef T result_type;
T operator()(PyObject*) const;
};
template <class T>
struct return_rvalue_from_python
{
typedef T result_type;
return_rvalue_from_python();
result_type operator()(PyObject*);
private:
rvalue_from_python_data<T> m_data;
};
template <class T>
struct return_object_manager_from_python
{
typedef T result_type;
result_type operator()(PyObject*) const;
};
template <class T>
struct select_return_from_python
{
BOOST_STATIC_CONSTANT(
bool, obj_mgr = is_object_manager<T>::value);
BOOST_STATIC_CONSTANT(
bool, ptr = is_pointer<T>::value);
BOOST_STATIC_CONSTANT(
bool, ref = is_reference<T>::value);
typedef typename mpl::if_c<
obj_mgr
, return_object_manager_from_python<T>
, typename mpl::if_c<
ptr
, return_pointer_from_python<T>
, typename mpl::if_c<
ref
, return_reference_from_python<T>
, return_rvalue_from_python<T>
>::type
>::type
>::type type;
};
}
template <class T>
struct return_from_python
: detail::select_return_from_python<T>::type
{
};
// Specialization as a convenience for call and call_method
template <>
struct return_from_python<void>
{
typedef python::detail::returnable<void>::type result_type;
result_type operator()(PyObject* x) const
{
(void_result_from_python)(x);
# ifdef BOOST_NO_VOID_RETURNS
return result_type();
# endif
}
};
//
// Implementations
//
namespace detail
{
template <class T>
inline return_rvalue_from_python<T>::return_rvalue_from_python()
: m_data(
const_cast<registration*>(®istered<T>::converters)
)
{
}
template <class T>
inline typename return_rvalue_from_python<T>::result_type
return_rvalue_from_python<T>::operator()(PyObject* obj)
{
// Take possession of the source object here. If the result is in
// fact going to be a copy of an lvalue embedded in the object,
// and we take possession inside rvalue_result_from_python, it
// will be destroyed too early.
handle<> holder(obj);
return *(T*)
(rvalue_result_from_python)(obj, m_data.stage1);
}
template <class T>
inline T return_reference_from_python<T>::operator()(PyObject* obj) const
{
return python::detail::void_ptr_to_reference(
(reference_result_from_python)(obj, registered<T>::converters)
, (T(*)())0);
}
template <class T>
inline T return_pointer_from_python<T>::operator()(PyObject* obj) const
{
return T(
(pointer_result_from_python)(obj, registered_pointee<T>::converters)
);
}
template <class T>
inline T return_object_manager_from_python<T>::operator()(PyObject* obj) const
{
return T(
object_manager_traits<T>::adopt(expect_non_null(obj))
);
}
}
}}} // namespace boost::python::converter
#endif // RETURN_FROM_PYTHON_DWA200265_HPP
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