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- // Copyright David Abrahams 2002.
- // 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/python/iterator.hpp>
- #include <boost/iterator/transform_iterator.hpp>
- #include <list>
- using namespace boost::python;
- typedef std::list<int> list_int;
- // Prove that we can handle InputIterators which return rvalues.
- struct doubler
- {
- typedef int result_type;
- int operator()(int x) const { return x * 2; }
- };
- typedef boost::transform_iterator<doubler, list_int::iterator> doubling_iterator;
- typedef std::pair<doubling_iterator,doubling_iterator> list_range2;
- list_range2 range2(list_int& x)
- {
- return list_range2(
- boost::make_transform_iterator<doubler>(x.begin(), doubler())
- , boost::make_transform_iterator<doubler>(x.end(), doubler()));
- }
- // We do this in a separate module from iterators_ext (iterators.cpp)
- // to work around an MSVC6 linker bug, which causes it to complain
- // about a "duplicate comdat" if the input iterator is instantiated in
- // the same module with the others.
- BOOST_PYTHON_MODULE(input_iterator)
- {
- def("range2", &::range2);
-
- class_<list_range2>("list_range2")
- // We can wrap InputIterators which return by-value
- .def("__iter__"
- , range(&list_range2::first, &list_range2::second))
- ;
- }
- #include "module_tail.cpp"
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