rdkit/Code/Demos/boost/smartPtrsAndIters/module.cpp

// Copyright Rational Discovery LLC 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.hpp>
#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
#include <boost/python/detail/api_placeholder.hpp>
#include <boost/shared_ptr.hpp>

#include <vector>

namespace python = boost::python;

class DemoKlass {
 public:
  explicit DemoKlass(int v) : val_(v) {};
  int getVal() const { return val_; };

 private:
  int val_;
};
typedef boost::shared_ptr<DemoKlass> DemoKlassSPtr;
typedef std::vector<DemoKlass *> DemoKlassPtrVect;
typedef std::vector<DemoKlassSPtr> DemoKlassSPtrVect;

DemoKlass *buildPtr(int v) { return new DemoKlass(v); }
DemoKlassSPtr buildSPtr(int v) { return DemoKlassSPtr(new DemoKlass(v)); }

DemoKlassPtrVect buildPtrVector(unsigned int sz) {
  DemoKlassPtrVect res;
  for (unsigned int i = 0; i < sz; i++) {
    res.push_back(new DemoKlass(i));
  }
  return res;
}

DemoKlassSPtrVect buildSPtrVector(unsigned int sz) {
  DemoKlassSPtrVect res;
  for (unsigned int i = 0; i < sz; i++) {
    res.push_back(DemoKlassSPtr(new DemoKlass(i)));
  }
  return res;
}

class DemoContainer {
 public:
  typedef DemoKlassSPtrVect::iterator iterator;
  typedef DemoKlassSPtrVect::const_iterator const_iterator;
  explicit DemoContainer(unsigned int sz) { vect_ = buildSPtrVector(sz); }
  iterator begin() { return vect_.begin(); }
  iterator end() { return vect_.end(); }
  const_iterator begin() const { return vect_.begin(); }
  const_iterator end() const { return vect_.end(); }

 private:
  DemoKlassSPtrVect vect_;
};

BOOST_PYTHON_MODULE(SPtrTestModule) {
  python::class_<DemoKlass, DemoKlassSPtr>("DemoKlass", "demo class",
                                           python::init<int>())
      .def("GetVal", &DemoKlass::getVal);

  python::def("buildPtr", buildPtr,
              python::return_value_policy<python::manage_new_object>());
  python::def("buildSPtr", buildSPtr);

  python::class_<DemoKlassPtrVect>("DemoKlassPtrVec")
      .def(python::vector_indexing_suite<DemoKlassPtrVect>());
  python::def("buildPtrVector", buildPtrVector);

  python::class_<DemoKlassSPtrVect>("DemoKlassSPtrVec")
      .def(python::vector_indexing_suite<DemoKlassSPtrVect, true>());
  python::def("buildSPtrVector", buildSPtrVector);

  python::class_<DemoContainer>("DemoContainer", "demo container",
                                python::init<unsigned int>())
      .def("__iter__", python::iterator<DemoContainer>());
}