1 /*=============================================================================
2 Copyright (c) 2001-2011 Hartmut Kaiser
3 Copyright (c) 2001-2011 Joel de Guzman
5 Distributed under the Boost Software License, Version 1.0. (See accompanying
6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 ==============================================================================*/
8 #if !defined(BOOST_SPIRIT_ANY_IF_NS_NOVEMBER_04_2008_0906PM)
9 #define BOOST_SPIRIT_ANY_IF_NS_NOVEMBER_04_2008_0906PM
15 #include <boost/spirit/home/support/algorithm/any_if.hpp>
16 #include <boost/spirit/home/support/algorithm/any_ns.hpp>
18 namespace boost { namespace spirit
20 ///////////////////////////////////////////////////////////////////////////
21 // This is a special version for a binary fusion::any. The predicate
22 // is used to decide whether to advance the second iterator or not.
23 // This is needed for sequences containing components with unused
24 // attributes. The second iterator is advanced only if the attribute
25 // of the corresponding component iterator is not unused.
27 // This is a non-short circuiting (ns) version of the any_if algorithm.
28 // see any_if.hpp (uses | instead of ||).
29 ///////////////////////////////////////////////////////////////////////////
33 typename Pred, typename First1, typename Last1, typename First2
34 , typename Last2, typename F
37 any_if_ns(First1 const&, First2 const&, Last1 const&, Last2 const&
38 , F const&, mpl::true_)
44 typename Pred, typename First1, typename Last1, typename First2
45 , typename Last2, typename F
48 any_if_ns(First1 const& first1, First2 const& first2
49 , Last1 const& last1, Last2 const& last2, F& f, mpl::false_)
51 return (0 != (f(*first1, spirit::detail::attribute_value<Pred, First1, Last2>(first2)) |
52 detail::any_if_ns<Pred>(
54 , attribute_next<Pred, First1, Last2>(first2)
57 , fusion::result_of::equal_to<
58 typename fusion::result_of::next<First1>::type, Last1>())));
62 template <typename Pred, typename Sequence1, typename Sequence2, typename F>
64 any_if_ns(Sequence1 const& seq1, Sequence2& seq2, F f, Pred)
66 return detail::any_if_ns<Pred>(
67 fusion::begin(seq1), fusion::begin(seq2)
68 , fusion::end(seq1), fusion::end(seq2)
70 , fusion::result_of::equal_to<
71 typename fusion::result_of::begin<Sequence1>::type
72 , typename fusion::result_of::end<Sequence1>::type>());
75 template <typename Pred, typename Sequence, typename F>
77 any_if_ns(Sequence const& seq, unused_type const, F f, Pred)
79 return detail::any_ns(
83 , fusion::result_of::equal_to<
84 typename fusion::result_of::begin<Sequence>::type
85 , typename fusion::result_of::end<Sequence>::type>());