e80224b1ad
Commands used: svn merge https://svn.boost.org/svn/boost/branches/release/boost/python https://svn.boost.org/svn/boost/trunk/boost/python /net/chevy/raid1/rwgk/boost_release/merge_attempt/boost/boost/python svn merge https://svn.boost.org/svn/boost/branches/release/libs/python https://svn.boost.org/svn/boost/trunk/libs/python /net/chevy/raid1/rwgk/boost_release/merge_attempt/boost/libs/python svn, version 1.6.4 (r38063) compiled Aug 17 2009, 13:31:03 [SVN r55629]
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
// Copyright David Abrahams 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/python/class.hpp>
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#include <boost/python/module.hpp>
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#include <boost/python/def.hpp>
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#include <boost/python/has_back_reference.hpp>
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#include <boost/python/back_reference.hpp>
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#include <boost/ref.hpp>
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#include <boost/utility.hpp>
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#include <memory>
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#define BOOST_ENABLE_ASSERT_HANDLER
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#include <boost/assert.hpp>
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#include <boost/python/copy_const_reference.hpp>
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#include <boost/python/return_value_policy.hpp>
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#include <boost/mpl/bool.hpp>
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// This test shows that a class can be wrapped "as itself" but also
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// acquire a back-reference iff has_back_reference<> is appropriately
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// specialized.
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using namespace boost::python;
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struct X
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{
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explicit X(int x) : x(x), magic(7654321) { ++counter; }
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X(X const& rhs) : x(rhs.x), magic(7654321) { ++counter; }
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virtual ~X() { BOOST_ASSERT(magic == 7654321); magic = 6666666; x = 9999; --counter; }
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void set(int _x) { BOOST_ASSERT(magic == 7654321); this->x = _x; }
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int value() const { BOOST_ASSERT(magic == 7654321); return x; }
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static int count() { return counter; }
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private:
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void operator=(X const&);
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private:
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int x;
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long magic;
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static int counter;
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};
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int X::counter;
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struct Y : X
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{
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Y(PyObject* self, int x) : X(x), self(self) {}
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Y(PyObject* self, Y const& rhs) : X(rhs), self(self) {}
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private:
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Y(Y const&);
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PyObject* self;
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};
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struct Z : X
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{
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Z(PyObject* self, int x) : X(x), self(self) {}
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Z(PyObject* self, Z const& rhs) : X(rhs), self(self) {}
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private:
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Z(Z const&);
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PyObject* self;
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};
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Y const& copy_Y(Y const& y) { return y; }
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Z const& copy_Z(Z const& z) { return z; }
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namespace boost { namespace python
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{
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template <>
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struct has_back_reference<Y>
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: mpl::true_
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{
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};
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template <>
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struct has_back_reference<Z>
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: mpl::true_
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{
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};
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}}
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// prove that back_references get initialized with the right PyObject*
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object y_identity(back_reference<Y const&> y)
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{
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return y.source();
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}
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// prove that back_references contain the right value
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bool y_equality(back_reference<Y const&> y1, Y const& y2)
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{
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return &y1.get() == &y2;
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}
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BOOST_PYTHON_MODULE(back_reference_ext)
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{
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def("copy_Y", copy_Y, return_value_policy<copy_const_reference>());
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def("copy_Z", copy_Z, return_value_policy<copy_const_reference>());
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def("x_instances", &X::count);
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class_<Y>("Y", init<int>())
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.def("value", &Y::value)
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.def("set", &Y::set)
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;
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class_<Z,std::auto_ptr<Z> >("Z", init<int>())
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.def("value", &Z::value)
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.def("set", &Z::set)
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;
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def("y_identity", y_identity);
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def("y_equality", y_equality);
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}
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#include "module_tail.cpp"
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