1 // Copyright David Abrahams 2004. Distributed under the Boost
2 // Software License, Version 1.0. (See accompanying
3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
4 #include <boost/python.hpp>
5
6 using namespace boost::python;
7
8 namespace test {
9
10 // Hmm. return_internal_reference<>() wants to wrap a real class.
11 class ret_type
12 {
13 public:
ret_type()14 ret_type() : i(42.5) {}
15 double i;
16 };
17
18 class crash_me
19 {
20 private:
21 ret_type i;
22 public:
get_i()23 ret_type& get_i() { return i; }
24 };
25
26 }
27
28 struct X
29 {
XX30 X( int value ) : m_value( value )
31 { ++s_count; }
32
XX33 X( const X &other ) : m_value( other.m_value )
34 { ++s_count; }
35
~XX36 ~X()
37 { --s_count; }
38
get_valueX39 int get_value() const
40 { return m_value; }
41
set_valueX42 void set_value(int new_value)
43 { m_value = new_value; }
44
get_instance_countX45 static int get_instance_count()
46 { return s_count; }
47
48 int m_value;
49
50 static int s_count;
51 };
52
53 int X::s_count = 0;
54
get_X_instance_count()55 int get_X_instance_count()
56 { return X::get_instance_count(); }
57
58
59
BOOST_PYTHON_MODULE(properties_ext)60 BOOST_PYTHON_MODULE(properties_ext)
61 {
62 typedef return_value_policy<return_by_value> return_by_value_t;
63 typedef return_internal_reference<> return_by_internal_reference_t;
64 class_<X>("X", init<int>() )
65 //defining read only property
66 .add_property( "value_r", &X::get_value )
67 .add_property( "value_r_ds", &X::get_value, "value_r_ds is read-only")
68 //defining read \ write property
69 .add_property( "value_rw", &X::get_value, &X::set_value )
70 .add_property( "value_rw_ds", &X::get_value, &X::set_value,
71 "value_rw_ds is read-write")
72 //defining read \ write property using make_getter and make_setter
73 .add_property( "value_direct",
74 make_getter( &X::m_value, return_by_value_t() ),
75 make_setter( &X::m_value, return_by_internal_reference_t() ) )
76 //defining read only property for static member
77 .add_static_property( "instance_count", &X::get_instance_count )
78 //defining read \ write property for static member using make_getter and make_setter
79 .add_static_property( "instance_count_direct",
80 make_getter( &X::s_count, return_by_value_t() ),
81 make_setter( &X::s_count, return_by_internal_reference_t() ) )
82 //defining class property using a global function
83 .add_static_property( "instance_count_injected", &get_X_instance_count );
84
85
86 class_< test::ret_type>( "ret_type")
87 .add_property( "i", &test::ret_type::i, &test::ret_type::i)
88 ;
89
90 class_< test::crash_me> crash_me_wrapper( "crash_me");
91
92 crash_me_wrapper
93 .def( "get_i", &test::crash_me::get_i , return_internal_reference<>())
94 ;
95
96 crash_me_wrapper.add_property( "i", crash_me_wrapper.attr("get_i"));
97
98 }
99
100 #include "module_tail.cpp"
101