forked from boostorg/iterator
move integer_range to its own file
[SVN r7716]
This commit is contained in:
@ -18,10 +18,6 @@
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#include <boost/operators.hpp>
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#include <boost/operators.hpp>
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#include <boost/compressed_pair.hpp>
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#include <boost/compressed_pair.hpp>
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#ifdef BOOST_MSVC
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#include <boost/int_iterator.hpp>
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#endif
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// I was having some problems with VC6. I couldn't tell whether our hack for
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// I was having some problems with VC6. I couldn't tell whether our hack for
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// stock GCC was causing problems so I needed an easy way to turn it on and
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// stock GCC was causing problems so I needed an easy way to turn it on and
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// off. Now we can test the hack with various compilers and still have an "out"
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// off. Now we can test the hack with various compilers and still have an "out"
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@ -32,8 +28,6 @@
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namespace boost {
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namespace boost {
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#ifndef BOOST_MSVC
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// Just a "type envelope"; works around some MSVC deficiencies.
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// Just a "type envelope"; works around some MSVC deficiencies.
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template <class T>
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template <class T>
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struct type {};
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struct type {};
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@ -510,59 +504,6 @@ struct reverse_iterators
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typedef typename Adaptor::const_iterator const_iterator;
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typedef typename Adaptor::const_iterator const_iterator;
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};
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};
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//=============================================================================
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// Counting Iterator and Integer Range Class
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struct counting_iterator_policies : public default_iterator_policies
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{
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template <class IntegerType>
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IntegerType dereference(type<IntegerType>, const IntegerType& i) const
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{ return i; }
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};
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template <class IntegerType>
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struct counting_iterator_traits {
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typedef IntegerType value_type;
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typedef IntegerType reference;
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typedef value_type* pointer;
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typedef std::ptrdiff_t difference_type;
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typedef std::random_access_iterator_tag iterator_category;
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};
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#endif //#ifndef BOOST_MSVC
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template <class IntegerType>
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struct integer_range {
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#ifdef BOOST_MSVC
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typedef int_iterator<IntegerType> iterator;
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#else
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typedef iterator_adaptor<IntegerType, counting_iterator_policies,
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counting_iterator_traits<IntegerType>, IntegerType> iterator;
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#endif
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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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} // namespace boost
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} // namespace boost
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#endif
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#endif
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