1 // (C) Copyright Jens Maurer 2001.
2 // Distributed under the Boost Software License, Version 1.0. (See
3 // accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
8 // 15 Nov 2001 Jens Maurer
11 // See http://www.boost.org/libs/utility/iterator_adaptors.htm for documentation.
13 #ifndef BOOST_ITERATOR_ADAPTOR_GENERATOR_ITERATOR_HPP
14 #define BOOST_ITERATOR_ADAPTOR_GENERATOR_ITERATOR_HPP
16 #include <boost/iterator/iterator_facade.hpp>
17 #include <boost/ref.hpp>
22 template<class Generator>
23 class generator_iterator
24 : public iterator_facade<
25 generator_iterator<Generator>
26 , typename Generator::result_type
27 , single_pass_traversal_tag
28 , typename Generator::result_type const&
31 typedef iterator_facade<
32 generator_iterator<Generator>
33 , typename Generator::result_type
34 , single_pass_traversal_tag
35 , typename Generator::result_type const&
39 generator_iterator() {}
40 generator_iterator(Generator* g) : m_g(g), m_value((*m_g)()) {}
47 const typename Generator::result_type&
53 bool equal(generator_iterator const& y) const
55 return this->m_g == y.m_g && this->m_value == y.m_value;
60 typename Generator::result_type m_value;
63 template<class Generator>
64 struct generator_iterator_generator
66 typedef generator_iterator<Generator> type;
69 template <class Generator>
70 inline generator_iterator<Generator>
71 make_generator_iterator(Generator & gen)
73 typedef generator_iterator<Generator> result_t;
74 return result_t(&gen);
77 } // namespace iterators
79 using iterators::generator_iterator;
80 using iterators::generator_iterator_generator;
81 using iterators::make_generator_iterator;
85 #endif // BOOST_ITERATOR_ADAPTOR_GENERATOR_ITERATOR_HPP