From b51965dddbed68f23c5e8c169c23c794313ce5f6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 28 Jun 2011 17:17:23 +0200
Subject: Add boost subset as an implementation detail

---
 cutl/details/boost/iterator.hpp | 59 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 cutl/details/boost/iterator.hpp

(limited to 'cutl/details/boost/iterator.hpp')

diff --git a/cutl/details/boost/iterator.hpp b/cutl/details/boost/iterator.hpp
new file mode 100644
index 0000000..f898c77
--- /dev/null
+++ b/cutl/details/boost/iterator.hpp
@@ -0,0 +1,59 @@
+//  interator.hpp workarounds for non-conforming standard libraries  ---------//
+
+//  (C) Copyright Beman Dawes 2000. 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/utility for documentation.
+
+//  Revision History
+//  12 Jan 01 added <cstddef> for std::ptrdiff_t (Jens Maurer)
+//  28 Jun 00 Workarounds to deal with known MSVC bugs (David Abrahams)
+//  26 Jun 00 Initial version (Jeremy Siek)
+
+#ifndef BOOST_ITERATOR_HPP
+#define BOOST_ITERATOR_HPP
+
+#include <iterator>
+#include <cstddef>           // std::ptrdiff_t
+#include <cutl/details/boost/config.hpp>
+
+namespace cutl_details_boost
+{
+# if defined(BOOST_NO_STD_ITERATOR) && !defined(BOOST_MSVC_STD_ITERATOR)
+  template <class Category, class T,
+    class Distance = std::ptrdiff_t,
+    class Pointer = T*, class Reference = T&>
+  struct iterator
+  {
+    typedef T         value_type;
+    typedef Distance  difference_type;
+    typedef Pointer   pointer;
+    typedef Reference reference;
+    typedef Category  iterator_category;
+  };
+# else
+
+  // declare iterator_base in namespace detail to work around MSVC bugs which
+  // prevent derivation from an identically-named class in a different namespace.
+  namespace detail {
+   template <class Category, class T, class Distance, class Pointer, class Reference>
+#  if !defined(BOOST_MSVC_STD_ITERATOR)
+   struct iterator_base : std::iterator<Category, T, Distance, Pointer, Reference> {};
+#  else
+   struct iterator_base : std::iterator<Category, T, Distance>
+   {
+     typedef Reference reference;
+     typedef Pointer pointer;
+     typedef Distance difference_type;
+   };
+#  endif
+  }
+
+  template <class Category, class T, class Distance = std::ptrdiff_t,
+            class Pointer = T*, class Reference = T&>
+  struct iterator : cutl_details_boost::detail::iterator_base<Category, T, Distance, Pointer, Reference> {};
+# endif
+} // namespace cutl_details_boost
+
+#endif // BOOST_ITERATOR_HPP
-- 
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