1 // Copyright David Abrahams 2005. 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
5 #include <boost/python/module.hpp>
6 #include <boost/python/def.hpp>
7 #include <boost/python/class.hpp>
8 #include <boost/utility.hpp>
9
10 /* Non-modifiable definitions */
11
12 class basic {
13 public:
basic()14 basic() { name = "cltree.basic"; }
repr()15 std::string repr() { return name+"()"; }
16 protected:
17 std::string name;
18 };
19
20 class constant: public basic {
21 public:
constant()22 constant() { name = "cltree.constant"; }
23 };
24
25 class symbol: public basic {
26 public:
symbol()27 symbol() { name = "cltree.symbol"; }
28 };
29
30 class variable: public basic {
31 public:
variable()32 variable() { name = "cltree.variable"; }
33 };
34
35 /* EOF: Non-modifiable definitions */
36
37 class symbol_wrapper: public symbol {
38 public:
symbol_wrapper(PyObject *)39 symbol_wrapper(PyObject* /*self*/): symbol() {
40 name = "cltree.wrapped_symbol";
41 }
42 };
43
44 class variable_wrapper: public variable {
45 public:
variable_wrapper(PyObject *)46 variable_wrapper(PyObject* /*self*/): variable() {
47 name = "cltree.wrapped_variable";
48 }
49
50 // This constructor is introduced only because cannot use
51 // boost::noncopyable, see below.
variable_wrapper(PyObject *,variable v)52 variable_wrapper(PyObject* /*self*/,variable v): variable(v) {}
53
54 };
55
BOOST_PYTHON_MODULE(cltree)56 BOOST_PYTHON_MODULE(cltree)
57 {
58 boost::python::class_<basic>("basic")
59 .def("__repr__",&basic::repr)
60 ;
61
62 boost::python::class_<constant, boost::python::bases<basic>, boost::noncopyable>("constant")
63 ;
64
65
66 boost::python::class_<symbol, symbol_wrapper, boost::noncopyable>("symbol")
67 ;
68
69 boost::python::class_<variable, boost::python::bases<basic>, variable_wrapper>("variable")
70 ;
71 }
72
73 #include "module_tail.cpp"
74
75