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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)
#
ifndef
PROXY_DWA2002615_HPP
#
define
PROXY_DWA2002615_HPP
#
include
<
boost/python/detail/prefix.hpp
>
#
include
<
boost/python/object_core.hpp
>
#
include
<
boost/python/object_operators.hpp
>
namespace
boost
{
namespace
python
{
namespace
api
{
template
<
class
Policies
>
class
proxy
:
public
object_operators
<proxy<Policies> >
{
typedef
typename
Policies::key_type key_type;
typedef
proxy
const
& assignment_self;
public:
proxy
(object
const
& target, key_type
const
& key);
operator
object
()
const
;
//
to support a[b] = c[d]
proxy
const
&
operator
=(assignment_self)
const
;
template
<
class
T
>
inline
proxy
const
&
operator
=(T
const
& rhs)
const
{
Policies::set
(m_target, m_key,
object
(rhs));
return
*
this
;
}
public:
//
implementation detail
void
del
()
const
;
private:
object m_target;
key_type m_key;
};
template
<
class
T
>
inline
void
del
(proxy<T>
const
& x)
{
x.
del
();
}
//
//
implementation
//
template
<
class
Policies
>
inline
proxy<Policies>::proxy(object
const
& target, key_type
const
& key)
: m_target(target), m_key(key)
{}
template
<
class
Policies
>
inline
proxy<Policies>::
operator
object
()
const
{
return
Policies::get
(m_target, m_key);
}
//
to support a[b] = c[d]
template
<
class
Policies
>
inline
proxy<Policies>
const
& proxy<Policies>::
operator
=(
typename
proxy::assignment_self rhs)
const
{
return
*
this
=
python::object
(rhs);
}
#
define
BOOST_PYTHON_PROXY_INPLACE
(
op
) \
template
<
class
Policies
,
class
R
> \
proxy<Policies>
const
&
operator
op
(proxy<Policies>
const
& lhs, R
const
& rhs) \
{ \
object
old
(lhs); \
return
lhs = (old op rhs); \
}
BOOST_PYTHON_PROXY_INPLACE
(+=)
BOOST_PYTHON_PROXY_INPLACE
(-=)
BOOST_PYTHON_PROXY_INPLACE
(*=)
BOOST_PYTHON_PROXY_INPLACE
(/=)
BOOST_PYTHON_PROXY_INPLACE
(%=)
BOOST_PYTHON_PROXY_INPLACE
(<<=)
BOOST_PYTHON_PROXY_INPLACE
(>>=)
BOOST_PYTHON_PROXY_INPLACE
(&=)
BOOST_PYTHON_PROXY_INPLACE
(^=)
BOOST_PYTHON_PROXY_INPLACE
(|=)
#
undef
BOOST_PYTHON_PROXY_INPLACE
template
<
class
Policies
>
inline
void
proxy<Policies>::del()
const
{
Policies::del
(m_target, m_key);
}
}}}
//
namespace boost::python::api
#
endif
//
PROXY_DWA2002615_HPP
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