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//
Copyright David Abrahams 2004. 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/dict.hpp
>
#
include
<
boost/python/extract.hpp
>
namespace
boost
{
namespace
python
{
namespace
detail
{
namespace
{
//
When returning list objects from methods, it may turn out that the
//
derived class is returning something else, perhaps something not
//
even derived from list. Since it is generally harmless for a
//
Boost.Python wrapper object to hold an object of a different
//
type, and because calling list() with an object may in fact
//
perform a conversion, the least-bad alternative is to assume that
//
we have a Python list object and stuff it into the list result.
list
assume_list
(object
const
& o)
{
return
list
(
detail::borrowed_reference
(o.
ptr
()));
}
//
No PyDict_CheckExact; roll our own.
inline
bool
check_exact
(dict_base
const
* p)
{
return
p->
ptr
()->
ob_type
== &PyDict_Type;
}
}
detail::new_reference
dict_base::call
(object
const
& arg_)
{
return
(detail::new_reference)
PyObject_CallFunction
(
(PyObject*)&PyDict_Type,
const_cast
<
char
*>(
"
(O)
"
),
arg_.
ptr
());
}
dict_base::dict_base
()
: object(detail::new_reference(PyDict_New()))
{}
dict_base::dict_base
(object_cref data)
: object(call(data))
{}
void
dict_base::clear
()
{
if
(
check_exact
(
this
))
PyDict_Clear
(
this
->
ptr
());
else
this
->
attr
(
"
clear
"
)();
}
dict
dict_base::copy
()
{
if
(
check_exact
(
this
))
{
return
dict
(
detail::new_reference
(
PyDict_Copy
(
this
->
ptr
())));
}
else
{
return
dict
(
detail::borrowed_reference
(
this
->
attr
(
"
copy
"
)().
ptr
()
));
}
}
object
dict_base::get
(object_cref k)
const
{
if
(
check_exact
(
this
))
{
PyObject* result =
PyDict_GetItem
(
this
->
ptr
(),k.
ptr
());
return
object
(
detail::borrowed_reference
(result ? result : Py_None));
}
else
{
return
this
->
attr
(
"
get
"
)(k);
}
}
object
dict_base::get
(object_cref k, object_cref d)
const
{
return
this
->
attr
(
"
get
"
)(k,d);
}
bool
dict_base::has_key
(object_cref k)
const
{
return
extract<
bool
>(
this
->
contains
(k));
}
list
dict_base::items
()
const
{
if
(
check_exact
(
this
))
{
return
list
(
detail::new_reference
(
PyDict_Items
(
this
->
ptr
())));
}
else
{
return
assume_list
(
this
->
attr
(
"
items
"
)());
}
}
object
dict_base::iteritems
()
const
{
return
this
->
attr
(
"
iteritems
"
)();
}
object
dict_base::iterkeys
()
const
{
return
this
->
attr
(
"
iterkeys
"
)();
}
object
dict_base::itervalues
()
const
{
return
this
->
attr
(
"
itervalues
"
)();
}
list
dict_base::keys
()
const
{
if
(
check_exact
(
this
))
{
return
list
(
detail::new_reference
(
PyDict_Keys
(
this
->
ptr
())));
}
else
{
return
assume_list
(
this
->
attr
(
"
keys
"
)());
}
}
tuple
dict_base::popitem
()
{
return
tuple
(
detail::borrowed_reference
(
this
->
attr
(
"
popitem
"
)().
ptr
()
));
}
object
dict_base::setdefault
(object_cref k)
{
return
this
->
attr
(
"
setdefault
"
)(k);
}
object
dict_base::setdefault
(object_cref k, object_cref d)
{
return
this
->
attr
(
"
setdefault
"
)(k,d);
}
void
dict_base::update
(object_cref other)
{
if
(
check_exact
(
this
))
{
if
(
PyDict_Update
(
this
->
ptr
(),other.
ptr
()) == -
1
)
throw_error_already_set
();
}
else
{
this
->
attr
(
"
update
"
)(other);
}
}
list
dict_base::values
()
const
{
if
(
check_exact
(
this
))
{
return
list
(
detail::new_reference
(
PyDict_Values
(
this
->
ptr
())));
}
else
{
return
assume_list
(
this
->
attr
(
"
values
"
)());
}
}
static
struct
register_dict_pytype_ptr
{
register_dict_pytype_ptr
()
{
const_cast
<converter::registration &>(
converter::registry::lookup
(boost::python::type_id<boost::python::dict>())
).
m_class_object
= &PyDict_Type;
}
}register_dict_pytype_ptr_;
}}}
//
namespace boost::python
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