Squashed 'third_party/boostorg/multi_index/' content from commit d95a949
Change-Id: Ie67c2d797c11dc122c7f11e767e81691bf2191a4
git-subtree-dir: third_party/boostorg/multi_index
git-subtree-split: d95a94942b918140e565feb99ed36ea97c30084e
diff --git a/include/boost/multi_index/detail/unbounded.hpp b/include/boost/multi_index/detail/unbounded.hpp
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+/* Copyright 2003-2013 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_UNBOUNDED_HPP
+#define BOOST_MULTI_INDEX_DETAIL_UNBOUNDED_HPP
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/detail/workaround.hpp>
+
+namespace boost{
+
+namespace multi_index{
+
+/* dummy type and variable for use in ordered_index::range() */
+
+/* ODR-abiding technique shown at the example attached to
+ * http://lists.boost.org/Archives/boost/2006/07/108355.php
+ */
+
+namespace detail{class unbounded_helper;}
+
+detail::unbounded_helper unbounded(detail::unbounded_helper);
+
+namespace detail{
+
+class unbounded_helper
+{
+ unbounded_helper(){}
+ unbounded_helper(const unbounded_helper&){}
+ friend unbounded_helper multi_index::unbounded(unbounded_helper);
+};
+
+typedef unbounded_helper (*unbounded_type)(unbounded_helper);
+
+} /* namespace multi_index::detail */
+
+inline detail::unbounded_helper unbounded(detail::unbounded_helper)
+{
+ return detail::unbounded_helper();
+}
+
+/* tags used in the implementation of range */
+
+namespace detail{
+
+struct none_unbounded_tag{};
+struct lower_unbounded_tag{};
+struct upper_unbounded_tag{};
+struct both_unbounded_tag{};
+
+} /* namespace multi_index::detail */
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif