forked from boostorg/unordered
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
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// Copyright 2005-2009 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_INPUT_ITERATOR_HEADER)
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#define BOOST_UNORDERED_TEST_HELPERS_INPUT_ITERATOR_HEADER
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#include <boost/config.hpp>
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#include <boost/iterator_adaptors.hpp>
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namespace test
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{
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template <class Iterator>
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struct proxy
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{
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typedef BOOST_DEDUCED_TYPENAME Iterator::value_type value_type;
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proxy(value_type const& v) : v_(v) {}
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proxy(proxy const& x) : v_(x.v_) {}
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operator value_type const&() const { return v_; }
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value_type v_;
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};
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template <class Iterator>
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struct input_iterator_adaptor
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: boost::iterator_adaptor<
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input_iterator_adaptor<Iterator>, Iterator,
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boost::use_default, std::input_iterator_tag,
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proxy<Iterator> >
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{
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typedef boost::iterator_adaptor<
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input_iterator_adaptor<Iterator>, Iterator,
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boost::use_default, std::input_iterator_tag,
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proxy<Iterator> > base;
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explicit input_iterator_adaptor(Iterator it = Iterator())
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: base(it) {}
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};
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template <class Iterator>
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input_iterator_adaptor<Iterator> input_iterator(Iterator it)
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{
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return input_iterator_adaptor<Iterator>(it);
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}
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}
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#endif
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