Add SCons configure checks

[senf.git] / boost_ext / boost / multi_index / detail / safe_ctr_proxy.hpp

diff --git a/boost_ext/boost/multi_index/detail/safe_ctr_proxy.hpp b/boost_ext/boost/multi_index/detail/safe_ctr_proxy.hpp
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+/* Copyright 2003-2006 Joaquín M López Muñoz.
+ * 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/multi_index for library home page.
+ */
+
+#ifndef BOOST_MULTI_INDEX_DETAIL_SAFE_CTR_PROXY_HPP
+#define BOOST_MULTI_INDEX_DETAIL_SAFE_CTR_PROXY_HPP
+
+#if defined(_MSC_VER)&&(_MSC_VER>=1200)
+#pragma once
+#endif
+
+#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/detail/workaround.hpp>
+
+#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
+#include <boost/multi_index/detail/safe_mode.hpp>
+
+namespace boost{
+
+namespace multi_index{
+
+namespace detail{
+
+/* A safe iterator is instantiated in the form
+ * safe_iterator<Iterator,Container>: MSVC++ 6.0 has serious troubles with
+ * the resulting symbols names, given that index names (which stand for
+ * Container) are fairly long themselves. safe_ctr_proxy does not statically
+ * depend on Container, and provides the necessary methods (begin and end) to
+ * the safe mode framework via an abstract interface. With safe_ctr_proxy,
+ * instead of deriving from safe_container<Container> the following base class
+ * must be used:
+ *
+ *   safe_ctr_proxy_impl<Iterator,Container>
+ *
+ * where Iterator is the type of the *unsafe* iterator being wrapped.
+ * The corresponding safe iterator instantiation is then
+ * 
+ *   safe_iterator<Iterator,safe_ctr_proxy<Iterator> >,
+ *
+ * which does not include the name of Container.
+ */
+
+template<typename Iterator>
+class safe_ctr_proxy:
+  public safe_mode::safe_container<safe_ctr_proxy<Iterator> >
+{
+public:
+  typedef safe_mode::safe_iterator<Iterator,safe_ctr_proxy> iterator;
+  typedef iterator                                          const_iterator;
+
+  iterator       begin(){return begin_impl();}
+  const_iterator begin()const{return begin_impl();}
+  iterator       end(){return end_impl();}
+  const_iterator end()const{return end_impl();}
+
+protected:
+  virtual iterator       begin_impl()=0;
+  virtual const_iterator begin_impl()const=0;
+  virtual iterator       end_impl()=0;
+  virtual const_iterator end_impl()const=0;
+};
+
+template<typename Iterator,typename Container>
+class safe_ctr_proxy_impl:public safe_ctr_proxy<Iterator>
+{
+  typedef safe_ctr_proxy<Iterator> super;
+  typedef Container                container_type;
+
+public:
+  typedef typename super::iterator       iterator;
+  typedef typename super::const_iterator const_iterator;
+
+  virtual iterator       begin_impl(){return container().begin();}
+  virtual const_iterator begin_impl()const{return container().begin();}
+  virtual iterator       end_impl(){return container().end();}
+  virtual const_iterator end_impl()const{return container().end();}
+
+private:
+  container_type& container()
+  {
+    return *static_cast<container_type*>(this);
+  }
+  
+  const container_type& container()const
+  {
+    return *static_cast<const container_type*>(this);
+  }
+};
+
+} /* namespace multi_index::detail */
+
+} /* namespace multi_index */
+
+} /* namespace boost */
+
+#endif /* workaround */
+
+#endif /* BOOST_MULTI_INDEX_ENABLE_SAFE_MODE */
+
+#endif