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- // Copyright 2006-2009 Daniel James.
- // 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)
- #if !defined(BOOST_UNORDERED_TEST_HELPERS_HEADER)
- #define BOOST_UNORDERED_TEST_HELPERS_HEADER
- #include <iterator>
- namespace test {
- template <class Container> struct get_key_impl
- {
- typedef typename Container::key_type key_type;
- static key_type const& get_key(key_type const& x) { return x; }
- template <class T>
- static key_type const& get_key(std::pair<key_type, T> const& x, char = 0)
- {
- return x.first;
- }
- template <class T>
- static key_type const& get_key(
- std::pair<key_type const, T> const& x, unsigned char = 0)
- {
- return x.first;
- }
- };
- template <class Container, class T>
- inline typename Container::key_type const& get_key(T const& x)
- {
- return get_key_impl<Container>::get_key(x);
- }
- // test::next
- //
- // Increments an iterator by 1 or a given value.
- // Like boost::next, but simpler.
- // Mainly because boost::next uses an MPL file
- // which causes warnings.
- template <typename Iterator> Iterator next(Iterator it) { return ++it; }
- template <typename Iterator, typename IntType>
- Iterator next(Iterator it, IntType x)
- {
- std::advance(it,
- static_cast<typename std::iterator_traits<Iterator>::difference_type>(x));
- return it;
- }
- }
- #endif
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