forked from boostorg/unordered
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
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// Copyright 2006-2009 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_UNORDERED_TEST_HELPERS_HEADER)
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#define BOOST_UNORDERED_TEST_HELPERS_HEADER
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namespace test
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{
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template <class Container>
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struct get_key_impl
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{
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typedef BOOST_DEDUCED_TYPENAME Container::key_type key_type;
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static key_type const& get_key(key_type const& x)
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{
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return x;
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}
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template <class T>
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static key_type const& get_key(
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std::pair<key_type, T> const& x, char = 0)
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{
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return x.first;
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}
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template <class T>
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static key_type const& get_key(std::pair<key_type const, T> const& x,
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unsigned char = 0)
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{
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return x.first;
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}
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};
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template <class Container, class T>
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inline BOOST_DEDUCED_TYPENAME Container::key_type const& get_key(T const& x)
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{
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return get_key_impl<Container>::get_key(x);
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}
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}
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#endif
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