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// Copyright David Abrahams 2005. 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/module.hpp>

#include <boost/python/def.hpp>

#include <boost/python/class.hpp>

#include <boost/utility.hpp>

/* Non-modifiable definitions */

class basic {

public:

basic() { name = "cltree.basic"; }

std::string repr() { return name+"()"; }

protected:

std::string name;

};

class constant: public basic {

public:

constant() { name = "cltree.constant"; }

};

class symbol: public basic {

public:

symbol() { name = "cltree.symbol"; }

};

class variable: public basic {

public:

variable() { name = "cltree.variable"; }

};

/* EOF: Non-modifiable definitions */

class symbol_wrapper: public symbol {

public:

symbol_wrapper(PyObject* /*self*/): symbol() {

name = "cltree.wrapped_symbol";

}

};

class variable_wrapper: public variable {

public:

variable_wrapper(PyObject* /*self*/): variable() {

name = "cltree.wrapped_variable";

}

// This constructor is introduced only because cannot use

// boost::noncopyable, see below.

variable_wrapper(PyObject* /*self*/,variable v): variable(v) {}

};

BOOST_PYTHON_MODULE(cltree)

{

boost::python::class_<basic>("basic")

.def("__repr__",&basic::repr)

;

boost::python::class_<constant, boost::python::bases<basic>, boost::noncopyable>("constant")

;

boost::python::class_<symbol, symbol_wrapper, boost::noncopyable>("symbol")

;

boost::python::class_<variable, boost::python::bases<basic>, variable_wrapper>("variable")

;

}

#include "module_tail.cpp"