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Merged in BGL, enable_if, and related changes from trunk: r67035, r57559, r72837, r73010, r73026, r72960, r73425, r73424, r73009, r73998, r73997, r73006, r73630, r73631, r73999, r73422, r73423, r73996, r71221
[SVN r74023]
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// (C) Copyright David Abrahams and Jeremy Siek 2000-2001.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Revision History:
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// 04 Jan 2001 Factored counting_iterator stuff into
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// boost/counting_iterator.hpp (David Abrahams)
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#ifndef BOOST_INTEGER_RANGE_HPP_
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#define BOOST_INTEGER_RANGE_HPP_
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#include <boost/config.hpp>
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#include <boost/iterator/counting_iterator.hpp>
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#include <algorithm>
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namespace boost {
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//=============================================================================
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// Counting Iterator and Integer Range Class
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template <class IntegerType>
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struct integer_range {
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typedef counting_iterator<IntegerType> iterator;
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typedef iterator const_iterator;
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typedef IntegerType value_type;
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typedef std::ptrdiff_t difference_type;
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typedef IntegerType reference;
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typedef IntegerType const_reference;
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typedef const IntegerType* pointer;
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typedef const IntegerType* const_pointer;
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typedef IntegerType size_type;
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integer_range(IntegerType start, IntegerType finish)
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: m_start(start), m_finish(finish) { }
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iterator begin() const { return iterator(m_start); }
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iterator end() const { return iterator(m_finish); }
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size_type size() const { return m_finish - m_start; }
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bool empty() const { return m_finish == m_start; }
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void swap(integer_range& x) {
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std::swap(m_start, x.m_start);
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std::swap(m_finish, x.m_finish);
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}
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protected:
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IntegerType m_start, m_finish;
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};
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template <class IntegerType>
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inline integer_range<IntegerType>
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make_integer_range(IntegerType first, IntegerType last)
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{
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return integer_range<IntegerType>(first, last);
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}
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} // namespace boost
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#endif // BOOST_INTEGER_RANGE_HPP_
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