Added boost header

test/external/boost/iterator/indirect_iterator.hpp

@@ -0,0 +1,139 @@
+// (C) Copyright David Abrahams 2002.
+// (C) Copyright Jeremy Siek    2002.
+// (C) Copyright Thomas Witt    2002.
+// 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)
+#ifndef BOOST_INDIRECT_ITERATOR_23022003THW_HPP
+#define BOOST_INDIRECT_ITERATOR_23022003THW_HPP
+
+#include <boost/iterator.hpp>
+#include <boost/iterator/iterator_adaptor.hpp>
+
+#include <boost/pointee.hpp>
+#include <boost/indirect_reference.hpp>
+#include <boost/detail/iterator.hpp>
+
+#include <boost/detail/indirect_traits.hpp>
+
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/add_reference.hpp>
+
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/not.hpp>
+#include <boost/mpl/has_xxx.hpp>
+
+#ifdef BOOST_MPL_CFG_NO_HAS_XXX
+# include <boost/shared_ptr.hpp>
+# include <boost/scoped_ptr.hpp>
+# include <boost/mpl/bool.hpp>
+# include <memory>
+#endif 
+
+#include <boost/iterator/detail/config_def.hpp> // must be last #include
+
+namespace boost
+{
+  template <class Iter, class Value, class Category, class Reference, class Difference>
+  class indirect_iterator;
+
+  namespace detail
+  {
+    template <class Iter, class Value, class Category, class Reference, class Difference>
+    struct indirect_base
+    {
+        typedef typename iterator_traits<Iter>::value_type dereferenceable;
+        
+        typedef iterator_adaptor<
+            indirect_iterator<Iter, Value, Category, Reference, Difference>
+          , Iter
+          , typename ia_dflt_help<
+                Value, pointee<dereferenceable>
+            >::type
+          , Category
+          , typename ia_dflt_help<
+                Reference
+              , mpl::eval_if<
+                    is_same<Value,use_default>
+                  , indirect_reference<dereferenceable>
+                  , add_reference<Value>
+                >
+            >::type
+          , Difference
+        > type;
+    };
+
+    template <>
+    struct indirect_base<int, int, int, int, int> {};
+  } // namespace detail
+
+    
+  template <
+      class Iterator
+    , class Value = use_default
+    , class Category = use_default
+    , class Reference = use_default
+    , class Difference = use_default
+  >
+  class indirect_iterator
+    : public detail::indirect_base<
+        Iterator, Value, Category, Reference, Difference
+      >::type
+  {
+      typedef typename detail::indirect_base<
+          Iterator, Value, Category, Reference, Difference
+      >::type super_t;
+
+      friend class iterator_core_access;
+
+   public:
+      indirect_iterator() {}
+
+      indirect_iterator(Iterator iter)
+        : super_t(iter) {}
+
+      template <
+          class Iterator2, class Value2, class Category2
+        , class Reference2, class Difference2
+      >
+      indirect_iterator(
+          indirect_iterator<
+               Iterator2, Value2, Category2, Reference2, Difference2
+          > const& y
+        , typename enable_if_convertible<Iterator2, Iterator>::type* = 0
+      )
+        : super_t(y.base())
+      {}
+
+  private:    
+      typename super_t::reference dereference() const
+      {
+# if BOOST_WORKAROUND(__BORLANDC__, < 0x5A0 )
+          return const_cast<super_t::reference>(**this->base());
+# else
+          return **this->base();
+# endif 
+      }
+  };
+
+  template <class Iter>
+  inline
+  indirect_iterator<Iter> make_indirect_iterator(Iter x)
+  {
+    return indirect_iterator<Iter>(x);
+  }
+
+  template <class Traits, class Iter>
+  inline
+  indirect_iterator<Iter,Traits> make_indirect_iterator(Iter x, Traits* = 0)
+  {
+    return indirect_iterator<Iter, Traits>(x);
+  }
+
+} // namespace boost
+
+#include <boost/iterator/detail/config_undef.hpp>
+
+#endif // BOOST_INDIRECT_ITERATOR_23022003THW_HPP