Squashed 'third_party/boostorg/range/' content from commit 4cfd4d8
Change-Id: I641c49f21039952b16f888223a952503e43a28a9
git-subtree-dir: third_party/boostorg/range
git-subtree-split: 4cfd4d8287ca949d7f29256adf3e796a0d1775ec
diff --git a/include/boost/range/size.hpp b/include/boost/range/size.hpp
new file mode 100644
index 0000000..7f38db8
--- /dev/null
+++ b/include/boost/range/size.hpp
@@ -0,0 +1,76 @@
+// Boost.Range library
+//
+// Copyright Thorsten Ottosen 2003-2004. Use, modification and
+// distribution is subject to 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)
+//
+// For more information, see http://www.boost.org/libs/range/
+//
+
+#ifndef BOOST_RANGE_SIZE_HPP
+#define BOOST_RANGE_SIZE_HPP
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+#include <boost/range/config.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+#include <boost/range/size_type.hpp>
+#include <boost/range/detail/has_member_size.hpp>
+#include <boost/assert.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/utility.hpp>
+
+namespace boost
+{
+ namespace range_detail
+ {
+
+ template<class SinglePassRange>
+ inline typename ::boost::enable_if<
+ has_member_size<SinglePassRange>,
+ typename range_size<const SinglePassRange>::type
+ >::type
+ range_calculate_size(const SinglePassRange& rng)
+ {
+ return rng.size();
+ }
+
+ template<class SinglePassRange>
+ inline typename disable_if<
+ has_member_size<SinglePassRange>,
+ typename range_size<const SinglePassRange>::type
+ >::type
+ range_calculate_size(const SinglePassRange& rng)
+ {
+ return std::distance(boost::begin(rng), boost::end(rng));
+ }
+ }
+
+ template<class SinglePassRange>
+ inline typename range_size<const SinglePassRange>::type
+ size(const SinglePassRange& rng)
+ {
+// Very strange things happen on some compilers that have the range concept
+// asserts disabled. This preprocessor condition is clearly redundant on a
+// working compiler but is vital for at least some compilers such as clang 4.2
+// but only on the Mac!
+#if BOOST_RANGE_ENABLE_CONCEPT_ASSERT == 1
+ BOOST_RANGE_CONCEPT_ASSERT((boost::SinglePassRangeConcept<SinglePassRange>));
+#endif
+
+#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \
+ !BOOST_WORKAROUND(__GNUC__, < 3) \
+ /**/
+ using namespace range_detail;
+#endif
+
+ return range_calculate_size(rng);
+ }
+
+} // namespace 'boost'
+
+#endif