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/as_literal.hpp b/include/boost/range/as_literal.hpp
new file mode 100644
index 0000000..3bca1a8
--- /dev/null
+++ b/include/boost/range/as_literal.hpp
@@ -0,0 +1,170 @@
+// Boost.Range library
+//
+//  Copyright Thorsten Ottosen 2006. 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_AS_LITERAL_HPP
+#define BOOST_RANGE_AS_LITERAL_HPP
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+#ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+#include <boost/range/detail/as_literal.hpp>
+#else
+
+#include <boost/range/iterator_range.hpp>
+#include <boost/range/detail/str_types.hpp>
+
+#include <boost/detail/workaround.hpp>
+
+#include <cstring>
+
+#if !defined(BOOST_NO_CXX11_CHAR16_T) || !defined(BOOST_NO_CXX11_CHAR32_T)
+#include <string>  // for std::char_traits
+#endif
+
+#ifndef BOOST_NO_CWCHAR
+#include <cwchar>
+#endif
+
+namespace boost
+{
+    namespace range_detail
+    {
+        inline std::size_t length( const char* s )
+        {
+            return strlen( s );
+        }
+
+#ifndef BOOST_NO_CXX11_CHAR16_T
+        inline std::size_t length( const char16_t* s )
+        {
+            return std::char_traits<char16_t>::length( s );
+        }
+#endif
+
+#ifndef BOOST_NO_CXX11_CHAR32_T
+        inline std::size_t length( const char32_t* s )
+        {
+            return std::char_traits<char32_t>::length( s );
+        }
+#endif
+
+#ifndef BOOST_NO_CWCHAR
+        inline std::size_t length( const wchar_t* s )
+        {
+            return wcslen( s );
+        }
+#endif
+
+        //
+        // Remark: the compiler cannot choose between T* and T[sz]
+        // overloads, so we must put the T* internal to the
+        // unconstrained version.
+        //
+
+        inline bool is_char_ptr( char* )
+        {
+            return true;
+        }
+
+        inline bool is_char_ptr( const char* )
+        {
+            return true;
+        }
+
+#ifndef BOOST_NO_CXX11_CHAR16_T
+        inline bool is_char_ptr( char16_t* )
+        {
+            return true;
+        }
+
+        inline bool is_char_ptr( const char16_t* )
+        {
+            return true;
+        }
+#endif
+
+#ifndef BOOST_NO_CXX11_CHAR32_T
+        inline bool is_char_ptr( char32_t* )
+        {
+            return true;
+        }
+
+        inline bool is_char_ptr( const char32_t* )
+        {
+            return true;
+        }
+#endif
+
+#ifndef BOOST_NO_CWCHAR
+        inline bool is_char_ptr( wchar_t* )
+        {
+            return true;
+        }
+
+        inline bool is_char_ptr( const wchar_t* )
+        {
+            return true;
+        }
+#endif
+
+        template< class T >
+        inline long is_char_ptr( const T& /* r */ )
+        {
+            return 0L;
+        }
+
+        template< class T >
+        inline iterator_range<T*>
+        make_range( T* const r, bool )
+        {
+            return iterator_range<T*>( r, r + length(r) );
+        }
+
+        template< class T >
+        inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<T>::type>
+        make_range( T& r, long )
+        {
+            return boost::make_iterator_range( r );
+        }
+
+    }
+
+    template< class Range >
+    inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<Range>::type>
+    as_literal( Range& r )
+    {
+        return range_detail::make_range( r, range_detail::is_char_ptr(r) );
+    }
+
+    template< class Range >
+    inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type>
+    as_literal( const Range& r )
+    {
+        return range_detail::make_range( r, range_detail::is_char_ptr(r) );
+    }
+
+    template< class Char, std::size_t sz >
+    inline iterator_range<Char*> as_literal( Char (&arr)[sz] )
+    {
+        return range_detail::make_range( arr, range_detail::is_char_ptr(arr) );
+    }
+
+    template< class Char, std::size_t sz >
+    inline iterator_range<const Char*> as_literal( const Char (&arr)[sz] )
+    {
+        return range_detail::make_range( arr, range_detail::is_char_ptr(arr) );
+    }
+}
+
+#endif // BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+
+#endif