Repository navigation
Expand file tree
/
Copy pathm1.cpp
More file actions
344 lines (296 loc) · 8.24 KB
/
Copy pathm1.cpp
File metadata and controls
344 lines (296 loc) · 8.24 KB
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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
// 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)
#include <boost/python/def.hpp>
#include <boost/python/module.hpp>
#include <boost/python/class.hpp>
#include <boost/python/lvalue_from_pytype.hpp>
#include <boost/python/copy_const_reference.hpp>
#include <boost/python/return_value_policy.hpp>
#include <boost/python/to_python_converter.hpp>
#include <boost/python/errors.hpp>
#include <boost/python/manage_new_object.hpp>
#include <boost/python/converter/pytype_function.hpp>
#include <string.h>
#include "simple_type.hpp"
#include "complicated.hpp"
// Declare some straightforward extension types
extern "C" void
dealloc(PyObject* self)
{
PyObject_Del(self);
}
// Noddy is a type we got from one of the Python sample files
struct NoddyObject : PyObject
{
int x;
};
PyTypeObject NoddyType = {
PyVarObject_HEAD_INIT(NULL, 0)
const_cast<char*>("Noddy"),
sizeof(NoddyObject),
0,
dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
0, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0, /* tp_free */
0, /* tp_is_gc */
0, /* tp_bases */
0, /* tp_mro */
0, /* tp_cache */
0, /* tp_subclasses */
0, /* tp_weaklist */
#if PYTHON_API_VERSION >= 1012
0 /* tp_del */
#endif
};
// Create a Noddy containing 42
PyObject* new_noddy()
{
NoddyObject* noddy = PyObject_New(NoddyObject, &NoddyType);
noddy->x = 42;
return (PyObject*)noddy;
}
// Simple is a wrapper around a struct simple, which just contains a char*
struct SimpleObject
{
PyObject_HEAD
simple x;
};
struct extract_simple_object
{
static simple& execute(SimpleObject& o) { return o.x; }
};
PyTypeObject SimpleType = {
PyVarObject_HEAD_INIT(NULL, 0)
const_cast<char*>("Simple"),
sizeof(SimpleObject),
0,
dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
0, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0, /* tp_free */
0, /* tp_is_gc */
0, /* tp_bases */
0, /* tp_mro */
0, /* tp_cache */
0, /* tp_subclasses */
0, /* tp_weaklist */
#if PYTHON_API_VERSION >= 1012
0 /* tp_del */
#endif
};
// Create a Simple containing "hello, world"
PyObject* new_simple()
{
SimpleObject* simple = PyObject_New(SimpleObject, &SimpleType);
simple->x.s = const_cast<char*>("hello, world");
return (PyObject*)simple;
}
//
// Declare some wrappers/unwrappers to test the low-level conversion
// mechanism.
//
using boost::python::to_python_converter;
// Wrap a simple by copying it into a Simple
struct simple_to_python
: to_python_converter<simple, simple_to_python, true>
//, boost::python::converter::wrap_pytype<&SimpleType>
{
static PyObject* convert(simple const& x)
{
SimpleObject* p = PyObject_New(SimpleObject, &SimpleType);
p->x = x;
return (PyObject*)p;
}
static PyTypeObject const *get_pytype(){return &SimpleType; }
};
struct int_from_noddy
{
static int& execute(NoddyObject& p)
{
return p.x;
}
};
//
// Some C++ functions to expose to Python
//
// Returns the length of s's held string
int f(simple const& s)
{
return strlen(s.s);
}
int f_mutable_ref(simple& s)
{
return strlen(s.s);
}
int f_mutable_ptr(simple* s)
{
return strlen(s->s);
}
int f_const_ptr(simple const* s)
{
return strlen(s->s);
}
int f2(SimpleObject const& s)
{
return strlen(s.x.s);
}
// A trivial passthru function for simple objects
simple const& g(simple const& x)
{
return x;
}
struct A
{
A() : x(0) {}
virtual ~A() {}
char const* name() { return "A"; }
int x;
};
struct B : A
{
B() : x(1) {}
static char const* name(B*) { return "B"; }
int x;
};
struct C : A
{
C() : x(2) {}
char const* name() { return "C"; }
virtual ~C() {}
int x;
};
struct D : B, C
{
D() : x(3) {}
char const* name() { return "D"; }
int x;
};
A take_a(A const& a) { return a; }
B take_b(B& b) { return b; }
C take_c(C* c) { return *c; }
D take_d(D* const& d) { return *d; }
D take_d_shared_ptr(boost::shared_ptr<D> d) { return *d; }
boost::shared_ptr<A> d_factory() { return boost::shared_ptr<B>(new D); }
struct Unregistered {};
Unregistered make_unregistered(int) { return Unregistered(); }
Unregistered* make_unregistered2(int) { return new Unregistered; }
BOOST_PYTHON_MODULE(m1)
{
using namespace boost::python;
using boost::shared_ptr;
simple_to_python();
lvalue_from_pytype<int_from_noddy,&NoddyType>();
lvalue_from_pytype<
#if !defined(BOOST_MSVC) || BOOST_MSVC > 1300 // doesn't support non-type member pointer parameters
extract_member<SimpleObject, simple, &SimpleObject::x>
#else
extract_simple_object
#endif
, &SimpleType
>();
lvalue_from_pytype<extract_identity<SimpleObject>,&SimpleType>();
def("new_noddy", new_noddy);
def("new_simple", new_simple);
def("make_unregistered", make_unregistered);
def("make_unregistered2", make_unregistered2, return_value_policy<manage_new_object>());
// Expose f() in all its variations
def("f", f);
def("f_mutable_ref", f_mutable_ref);
def("f_mutable_ptr", f_mutable_ptr);
def("f_const_ptr", f_const_ptr);
def("f2", f2);
// Expose g()
def("g", g , return_value_policy<copy_const_reference>()
);
def("take_a", take_a);
def("take_b", take_b);
def("take_c", take_c);
def("take_d", take_d);
def("take_d_shared_ptr", take_d_shared_ptr);
def("d_factory", d_factory);
class_<A, shared_ptr<A> >("A")
.def("name", &A::name)
;
// sequence points don't ensure that "A" is constructed before "B"
// or "C" below if we make them part of the same chain
class_<B,bases<A> >("B")
.def("name", &B::name)
;
class_<C,bases<A> >("C")
.def("name", &C::name)
;
class_<D, bases<B,C> >("D")
.def("name", &D::name)
;
class_<complicated>("complicated",
init<simple const&,int>())
.def(init<simple const&>())
.def("get_n", &complicated::get_n)
;
}
#include "module_tail.cpp"