summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to '3rdParty/Boost/src/boost/multi_index/detail/no_duplicate_tags.hpp')
-rw-r--r--3rdParty/Boost/src/boost/multi_index/detail/no_duplicate_tags.hpp97
1 files changed, 97 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/multi_index/detail/no_duplicate_tags.hpp b/3rdParty/Boost/src/boost/multi_index/detail/no_duplicate_tags.hpp
new file mode 100644
index 0000000..9b56e83
--- /dev/null
+++ b/3rdParty/Boost/src/boost/multi_index/detail/no_duplicate_tags.hpp
@@ -0,0 +1,97 @@
+/* Copyright 2003-2008 Joaquin M Lopez Munoz.
+ * 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)
+ *
+ * See http://www.boost.org/libs/multi_index for library home page.
+ */
+
+#ifndef BOOST_MULTI_INDEX_DETAIL_NO_DUPLICATE_TAGS_HPP
+#define BOOST_MULTI_INDEX_DETAIL_NO_DUPLICATE_TAGS_HPP
+
+#if defined(_MSC_VER)&&(_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/mpl/fold.hpp>
+#include <boost/mpl/set/set0.hpp>
+
+namespace boost{
+
+namespace multi_index{
+
+namespace detail{
+
+/* no_duplicate_tags check at compile-time that a tag list
+ * has no duplicate tags.
+ * The algorithm deserves some explanation: tags
+ * are sequentially inserted into a mpl::set if they were
+ * not already present. Due to the magic of mpl::set
+ * (mpl::has_key is contant time), this operation takes linear
+ * time, and even MSVC++ 6.5 handles it gracefully (other obvious
+ * solutions are quadratic.)
+ */
+
+struct duplicate_tag_mark{};
+
+struct duplicate_tag_marker
+{
+ template <typename MplSet,typename Tag>
+ struct apply
+ {
+ typedef mpl::s_item<
+ typename mpl::if_<mpl::has_key<MplSet,Tag>,duplicate_tag_mark,Tag>::type,
+ MplSet
+ > type;
+ };
+};
+
+template<typename TagList>
+struct no_duplicate_tags
+{
+ typedef typename mpl::fold<
+ TagList,
+ mpl::set0<>,
+ duplicate_tag_marker
+ >::type aux;
+
+ BOOST_STATIC_CONSTANT(
+ bool,value=!(mpl::has_key<aux,duplicate_tag_mark>::value));
+};
+
+/* Variant for an index list: duplication is checked
+ * across all the indices.
+ */
+
+struct duplicate_tag_list_marker
+{
+ template <typename MplSet,typename Index>
+ struct apply:mpl::fold<
+ BOOST_DEDUCED_TYPENAME Index::tag_list,
+ MplSet,
+ duplicate_tag_marker>
+ {
+ };
+};
+
+template<typename IndexList>
+struct no_duplicate_tags_in_index_list
+{
+ typedef typename mpl::fold<
+ IndexList,
+ mpl::set0<>,
+ duplicate_tag_list_marker
+ >::type aux;
+
+ BOOST_STATIC_CONSTANT(
+ bool,value=!(mpl::has_key<aux,duplicate_tag_mark>::value));
+};
+
+} /* namespace multi_index::detail */
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif