1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
#if !defined(BOOST_PP_IS_ITERATING)
// Copyright David Abrahams 2001.
// 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 POINTER_HOLDER_DWA20011215_HPP
# define POINTER_HOLDER_DWA20011215_HPP
# include <boost/get_pointer.hpp>
# include <boost/type.hpp>
# include <boost/python/instance_holder.hpp>
# include <boost/python/object/inheritance_query.hpp>
# include <boost/python/object/forward.hpp>
# include <boost/python/pointee.hpp>
# include <boost/python/type_id.hpp>
# include <boost/python/detail/wrapper_base.hpp>
# include <boost/python/detail/force_instantiate.hpp>
# include <boost/python/detail/preprocessor.hpp>
# include <boost/mpl/if.hpp>
# include <boost/mpl/apply.hpp>
# include <boost/preprocessor/comma_if.hpp>
# include <boost/preprocessor/iterate.hpp>
# include <boost/preprocessor/repeat.hpp>
# include <boost/preprocessor/debug/line.hpp>
# include <boost/preprocessor/enum_params.hpp>
# include <boost/preprocessor/repetition/enum_binary_params.hpp>
# include <boost/detail/workaround.hpp>
# include <boost/type_traits/remove_const.hpp>
namespace boost { namespace python {
template <class T> class wrapper;
}}
namespace boost { namespace python { namespace objects {
# if BOOST_WORKAROUND(__GNUC__, == 2)
# define BOOST_PYTHON_UNFORWARD_LOCAL(z, n, _) BOOST_PP_COMMA_IF(n) (typename unforward<A##n>::type)objects::do_unforward(a##n,0)
# else
# define BOOST_PYTHON_UNFORWARD_LOCAL(z, n, _) BOOST_PP_COMMA_IF(n) objects::do_unforward(a##n,0)
# endif
template <class Pointer, class Value>
struct pointer_holder : instance_holder
{
typedef Value value_type;
pointer_holder(Pointer);
// Forward construction to the held object
# define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 1))
# include BOOST_PP_ITERATE()
private: // types
private: // required holder implementation
void* holds(type_info, bool null_ptr_only);
template <class T>
inline void* holds_wrapped(type_info dst_t, wrapper<T>*,T* p)
{
return python::type_id<T>() == dst_t ? p : 0;
}
inline void* holds_wrapped(type_info, ...)
{
return 0;
}
private: // data members
Pointer m_p;
};
template <class Pointer, class Value>
struct pointer_holder_back_reference : instance_holder
{
private:
typedef typename python::pointee<Pointer>::type held_type;
public:
typedef Value value_type;
// Not sure about this one -- can it work? The source object
// undoubtedly does not carry the correct back reference pointer.
pointer_holder_back_reference(Pointer);
// Forward construction to the held object
# define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 2))
# include BOOST_PP_ITERATE()
private: // required holder implementation
void* holds(type_info, bool null_ptr_only);
private: // data members
Pointer m_p;
};
# undef BOOST_PYTHON_UNFORWARD_LOCAL
template <class Pointer, class Value>
inline pointer_holder<Pointer,Value>::pointer_holder(Pointer p)
: m_p(p)
{
}
template <class Pointer, class Value>
inline pointer_holder_back_reference<Pointer,Value>::pointer_holder_back_reference(Pointer p)
: m_p(p)
{
}
template <class Pointer, class Value>
void* pointer_holder<Pointer, Value>::holds(type_info dst_t, bool null_ptr_only)
{
typedef typename boost::remove_const< Value >::type non_const_value;
if (dst_t == python::type_id<Pointer>()
&& !(null_ptr_only && get_pointer(this->m_p))
)
return &this->m_p;
Value* p0
# if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x590))
= static_cast<Value*>( get_pointer(this->m_p) )
# else
= get_pointer(this->m_p)
# endif
;
non_const_value* p = const_cast<non_const_value*>( p0 );
if (p == 0)
return 0;
if (void* wrapped = holds_wrapped(dst_t, p, p))
return wrapped;
type_info src_t = python::type_id<non_const_value>();
return src_t == dst_t ? p : find_dynamic_type(p, src_t, dst_t);
}
template <class Pointer, class Value>
void* pointer_holder_back_reference<Pointer, Value>::holds(type_info dst_t, bool null_ptr_only)
{
if (dst_t == python::type_id<Pointer>()
&& !(null_ptr_only && get_pointer(this->m_p))
)
return &this->m_p;
if (!get_pointer(this->m_p))
return 0;
Value* p = get_pointer(m_p);
if (dst_t == python::type_id<held_type>())
return p;
type_info src_t = python::type_id<Value>();
return src_t == dst_t ? p : find_dynamic_type(p, src_t, dst_t);
}
}}} // namespace boost::python::objects
# endif // POINTER_HOLDER_DWA20011215_HPP
/* --------------- pointer_holder --------------- */
// For gcc 4.4 compatability, we must include the
// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
#else // BOOST_PP_IS_ITERATING
#if BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == 1
# if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
&& BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
# line BOOST_PP_LINE(__LINE__, pointer_holder.hpp)
# endif
# define N BOOST_PP_ITERATION()
# if (N != 0)
template< BOOST_PP_ENUM_PARAMS_Z(1, N, class A) >
# endif
pointer_holder(PyObject* self BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, a))
: m_p(new Value(
BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_UNFORWARD_LOCAL, nil)
))
{
python::detail::initialize_wrapper(self, get_pointer(this->m_p));
}
# undef N
/* --------------- pointer_holder_back_reference --------------- */
#elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == 2
# if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
&& BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
# line BOOST_PP_LINE(__LINE__, pointer_holder.hpp(pointer_holder_back_reference))
# endif
# define N BOOST_PP_ITERATION()
# if (N != 0)
template < BOOST_PP_ENUM_PARAMS_Z(1, N, class A) >
# endif
pointer_holder_back_reference(
PyObject* p BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, a))
: m_p(new held_type(
p BOOST_PP_COMMA_IF(N) BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_UNFORWARD_LOCAL, nil)
))
{}
# undef N
#endif // BOOST_PP_ITERATION_DEPTH()
#endif
|
