GeezerVison is showing github.com — python/test/input_iterator.cpp at develop · arrowd/python

Expand file tree

input_iterator.cpp

Copy path

More file actions

Latest commit

History

48 lines (40 loc) · 1.49 KB

input_iterator.cpp

Copy path

File metadata and controls

48 lines (40 loc) · 1.49 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

// 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"