| /*============================================================================= |
| Copyright (c) 2001-2011 Hartmut Kaiser |
| Copyright (c) 2001-2011 Joel de Guzman |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #if !defined(BOOST_SPIRIT_ANY_IF_NS_NOVEMBER_04_2008_0906PM) |
| #define BOOST_SPIRIT_ANY_IF_NS_NOVEMBER_04_2008_0906PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/support/algorithm/any_if.hpp> |
| #include <boost/spirit/home/support/algorithm/any_ns.hpp> |
| |
| namespace boost { namespace spirit |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // This is a special version for a binary fusion::any. The predicate |
| // is used to decide whether to advance the second iterator or not. |
| // This is needed for sequences containing components with unused |
| // attributes. The second iterator is advanced only if the attribute |
| // of the corresponding component iterator is not unused. |
| // |
| // This is a non-short circuiting (ns) version of the any_if algorithm. |
| // see any_if.hpp (uses | instead of ||). |
| /////////////////////////////////////////////////////////////////////////// |
| namespace detail |
| { |
| template < |
| typename Pred, typename First1, typename Last1, typename First2 |
| , typename Last2, typename F |
| > |
| inline bool |
| any_if_ns(First1 const&, First2 const&, Last1 const&, Last2 const& |
| , F const&, mpl::true_) |
| { |
| return false; |
| } |
| |
| template < |
| typename Pred, typename First1, typename Last1, typename First2 |
| , typename Last2, typename F |
| > |
| inline bool |
| any_if_ns(First1 const& first1, First2 const& first2 |
| , Last1 const& last1, Last2 const& last2, F& f, mpl::false_) |
| { |
| return (0 != (f(*first1, attribute_value<Pred, First1, Last2>(first2)) | |
| detail::any_if_ns<Pred>( |
| fusion::next(first1) |
| , attribute_next<Pred, First1, Last2>(first2) |
| , last1, last2 |
| , f |
| , fusion::result_of::equal_to< |
| typename fusion::result_of::next<First1>::type, Last1>()))); |
| } |
| } |
| |
| template <typename Pred, typename Sequence1, typename Sequence2, typename F> |
| inline bool |
| any_if_ns(Sequence1 const& seq1, Sequence2& seq2, F f, Pred) |
| { |
| return detail::any_if_ns<Pred>( |
| fusion::begin(seq1), fusion::begin(seq2) |
| , fusion::end(seq1), fusion::end(seq2) |
| , f |
| , fusion::result_of::equal_to< |
| typename fusion::result_of::begin<Sequence1>::type |
| , typename fusion::result_of::end<Sequence1>::type>()); |
| } |
| |
| template <typename Pred, typename Sequence, typename F> |
| inline bool |
| any_if_ns(Sequence const& seq, unused_type const, F f, Pred) |
| { |
| return detail::any_ns( |
| fusion::begin(seq) |
| , fusion::end(seq) |
| , f |
| , fusion::result_of::equal_to< |
| typename fusion::result_of::begin<Sequence>::type |
| , typename fusion::result_of::end<Sequence>::type>()); |
| } |
| |
| }} |
| |
| #endif |
| |