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//
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)
#
include
<
boost/python/object_protocol.hpp
>
#
include
<
boost/python/errors.hpp
>
#
include
<
boost/python/object.hpp
>
#
include
<
boost/python/ssize_t.hpp
>
namespace
boost
{
namespace
python
{
namespace
api
{
BOOST_PYTHON_DECL
object
getattr
(object
const
& target, object
const
& key)
{
return
object
(
detail::new_reference
(
PyObject_GetAttr
(target.
ptr
(), key.
ptr
())));
}
BOOST_PYTHON_DECL
object
getattr
(object
const
& target, object
const
& key, object
const
& default_)
{
PyObject* result =
PyObject_GetAttr
(target.
ptr
(), key.
ptr
());
if
(result ==
NULL
&&
PyErr_ExceptionMatches
(PyExc_AttributeError))
{
PyErr_Clear
();
return
default_;
}
return
object
(
detail::new_reference
(result));
}
BOOST_PYTHON_DECL
void
setattr
(object
const
& target, object
const
& key, object
const
& value)
{
if
(
PyObject_SetAttr
(target.
ptr
(), key.
ptr
(), value.
ptr
()) == -
1
)
throw_error_already_set
();
}
BOOST_PYTHON_DECL
void
delattr
(object
const
& target, object
const
& key)
{
if
(
PyObject_DelAttr
(target.
ptr
(), key.
ptr
()) == -
1
)
throw_error_already_set
();
}
BOOST_PYTHON_DECL
object
getattr
(object
const
& target,
char
const
* key)
{
return
object
(
detail::new_reference
(
PyObject_GetAttrString
(target.
ptr
(),
const_cast
<
char
*>(key))
));
}
BOOST_PYTHON_DECL
object
getattr
(object
const
& target,
char
const
* key, object
const
& default_)
{
PyObject* result =
PyObject_GetAttrString
(target.
ptr
(),
const_cast
<
char
*>(key));
if
(result ==
NULL
&&
PyErr_ExceptionMatches
(PyExc_AttributeError))
{
PyErr_Clear
();
return
default_;
}
return
object
(
detail::new_reference
(result));
}
BOOST_PYTHON_DECL
void
setattr
(object
const
& target,
char
const
* key, object
const
& value)
{
if
(
PyObject_SetAttrString
(
target.
ptr
(),
const_cast
<
char
*>(key), value.
ptr
()) == -
1
)
{
throw_error_already_set
();
}
}
BOOST_PYTHON_DECL
void
delattr
(object
const
& target,
char
const
* key)
{
if
(
PyObject_DelAttrString
(
target.
ptr
(),
const_cast
<
char
*>(key)) == -
1
)
{
throw_error_already_set
();
}
}
BOOST_PYTHON_DECL
object
getitem
(object
const
& target, object
const
& key)
{
return
object
(
detail::new_reference
(
PyObject_GetItem
(target.
ptr
(), key.
ptr
())));
}
BOOST_PYTHON_DECL
void
setitem
(object
const
& target, object
const
& key, object
const
& value)
{
if
(
PyObject_SetItem
(target.
ptr
(), key.
ptr
(), value.
ptr
()) == -
1
)
throw_error_already_set
();
}
BOOST_PYTHON_DECL
void
delitem
(object
const
& target, object
const
& key)
{
if
(
PyObject_DelItem
(target.
ptr
(), key.
ptr
()) == -
1
)
throw_error_already_set
();
}
namespace
//
slicing code copied directly out of the Python implementation
{
#
undef
ISINT
#
define
ISINT
(
x
) ((x) ==
NULL
|| PyInt_Check(x) || PyLong_Check(x))
static
PyObject *
apply_slice
(PyObject *u, PyObject *v, PyObject *w)
/*
return u[v:w]
*/
{
#
if
PY_VERSION_HEX < 0x03000000
PyTypeObject *tp = u->
ob_type
;
PySequenceMethods *sq = tp->
tp_as_sequence
;
if
(sq && sq->
sq_slice
&&
ISINT
(v) &&
ISINT
(w)) {
ssize_t
ilow =
0
, ihigh = ssize_t_max;
if
(!
_PyEval_SliceIndex
(v, &ilow))
return
NULL
;
if
(!
_PyEval_SliceIndex
(w, &ihigh))
return
NULL
;
return
PySequence_GetSlice
(u, ilow, ihigh);
}
else
#
endif
{
PyObject *slice =
PySlice_New
(v, w,
NULL
);
if
(slice !=
NULL
) {
PyObject *res =
PyObject_GetItem
(u, slice);
Py_DECREF
(slice);
return
res;
}
else
return
NULL
;
}
}
static
int
assign_slice
(PyObject *u, PyObject *v, PyObject *w, PyObject *x)
/*
u[v:w] = x
*/
{
#
if
PY_VERSION_HEX < 0x03000000
PyTypeObject *tp = u->
ob_type
;
PySequenceMethods *sq = tp->
tp_as_sequence
;
if
(sq && sq->
sq_slice
&&
ISINT
(v) &&
ISINT
(w)) {
ssize_t
ilow =
0
, ihigh = ssize_t_max;
if
(!
_PyEval_SliceIndex
(v, &ilow))
return
-
1
;
if
(!
_PyEval_SliceIndex
(w, &ihigh))
return
-
1
;
if
(x ==
NULL
)
return
PySequence_DelSlice
(u, ilow, ihigh);
else
return
PySequence_SetSlice
(u, ilow, ihigh, x);
}
else
#
endif
{
PyObject *slice =
PySlice_New
(v, w,
NULL
);
if
(slice !=
NULL
) {
int
res;
if
(x !=
NULL
)
res =
PyObject_SetItem
(u, slice, x);
else
res =
PyObject_DelItem
(u, slice);
Py_DECREF
(slice);
return
res;
}
else
return
-
1
;
}
}
}
BOOST_PYTHON_DECL
object
getslice
(object
const
& target, handle<>
const
& begin, handle<>
const
& end)
{
return
object
(
detail::new_reference
(
apply_slice
(target.
ptr
(), begin.
get
(), end.
get
())));
}
BOOST_PYTHON_DECL
void
setslice
(object
const
& target, handle<>
const
& begin, handle<>
const
& end, object
const
& value)
{
if
(
assign_slice
(
target.
ptr
(), begin.
get
(), end.
get
(), value.
ptr
()) == -
1
)
{
throw_error_already_set
();
}
}
BOOST_PYTHON_DECL
void
delslice
(object
const
& target, handle<>
const
& begin, handle<>
const
& end)
{
if
(
assign_slice
(
target.
ptr
(), begin.
get
(), end.
get
(),
0
) == -
1
)
{
throw_error_already_set
();
}
}
}}}
//
namespace boost::python::api
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