Added boost header

test/external/boost/python/iterator.hpp

@@ -0,0 +1,137 @@
+// Copyright David Abrahams 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 ITERATOR_DWA2002512_HPP
+# define ITERATOR_DWA2002512_HPP
+
+# include <boost/python/detail/prefix.hpp>
+
+# include <boost/python/detail/target.hpp>
+# include <boost/python/object/iterator.hpp>
+# include <boost/python/object_core.hpp>
+
+# include <boost/type_traits/cv_traits.hpp>
+# include <boost/type_traits/transform_traits.hpp>
+
+# if defined(BOOST_MSVC) && (BOOST_MSVC == 1400) /*
+> warning C4180: qualifier applied to function type has no meaning; ignored
+Peter Dimov wrote:
+This warning is caused by an overload resolution bug in VC8 that cannot be
+worked around and will probably not be fixed by MS in the VC8 line. The
+problematic overload is only instantiated and never called, and the code
+works correctly. */
+#  pragma warning(disable: 4180)
+# endif
+
+# include <boost/bind.hpp>
+# include <boost/bind/protect.hpp>
+
+namespace boost { namespace python { 
+
+namespace detail
+{
+  // Adds an additional layer of binding to
+  // objects::make_iterator(...), which allows us to pass member
+  // function and member data pointers.
+  template <class Target, class Accessor1, class Accessor2, class NextPolicies>
+  inline object make_iterator(
+      Accessor1 get_start
+    , Accessor2 get_finish
+    , NextPolicies next_policies
+    , Target&(*)()
+  )
+  {
+      return objects::make_iterator_function<Target>(
+          boost::protect(boost::bind(get_start, _1))
+        , boost::protect(boost::bind(get_finish, _1))
+        , next_policies
+      );
+  }
+
+  // Guts of template class iterators<>, below.
+  template <bool const_ = false>
+  struct iterators_impl
+  {
+      template <class T>
+      struct apply
+      {
+          typedef typename T::iterator iterator;
+          static iterator begin(T& x) { return x.begin(); }
+          static iterator end(T& x) { return x.end(); }
+      };
+  };
+
+  template <>
+  struct iterators_impl<true>
+  {
+      template <class T>
+      struct apply
+      {
+          typedef typename T::const_iterator iterator;
+          static iterator begin(T& x) { return x.begin(); }
+          static iterator end(T& x) { return x.end(); }
+      };
+  };
+}
+
+// An "ordinary function generator" which contains static begin(x) and
+// end(x) functions that invoke T::begin() and T::end(), respectively.
+template <class T>
+struct iterators
+    : detail::iterators_impl<
+        boost::is_const<T>::value
+      >::template apply<T>
+{
+};
+
+// Create an iterator-building function which uses the given
+// accessors. Deduce the Target type from the accessors. The iterator
+// returns copies of the inderlying elements.
+template <class Accessor1, class Accessor2>
+object range(Accessor1 start, Accessor2 finish)
+{
+    return detail::make_iterator(
+        start, finish
+      , objects::default_iterator_call_policies()
+      , detail::target(start)
+    );
+}
+
+// Create an iterator-building function which uses the given accessors
+// and next() policies. Deduce the Target type.
+template <class NextPolicies, class Accessor1, class Accessor2>
+object range(Accessor1 start, Accessor2 finish, NextPolicies* = 0)
+{
+    return detail::make_iterator(start, finish, NextPolicies(), detail::target(start));
+}
+
+// Create an iterator-building function which uses the given accessors
+// and next() policies, operating on the given Target type
+template <class NextPolicies, class Target, class Accessor1, class Accessor2>
+object range(Accessor1 start, Accessor2 finish, NextPolicies* = 0, boost::type<Target>* = 0)
+{
+    // typedef typename add_reference<Target>::type target;
+    return detail::make_iterator(start, finish, NextPolicies(), (Target&(*)())0);
+}
+
+// A Python callable object which produces an iterator traversing
+// [x.begin(), x.end()), where x is an instance of the Container
+// type. NextPolicies are used as the CallPolicies for the iterator's
+// next() function.
+template <class Container
+          , class NextPolicies = objects::default_iterator_call_policies>
+struct iterator : object
+{
+    iterator()
+        : object(
+            python::range<NextPolicies>(
+                &iterators<Container>::begin, &iterators<Container>::end
+                ))
+    {
+    }
+};
+
+}} // namespace boost::python
+
+#endif // ITERATOR_DWA2002512_HPP