[Boost-commit] svn:boost r57330 - in sandbox/statistics/detail/functor: . boost boost/statistics boost/statistics/detail boost/statistics/detail/functor

Subject: [Boost-commit] svn:boost r57330 - in sandbox/statistics/detail/functor: . boost boost/statistics boost/statistics/detail boost/statistics/detail/functor
From: erwann.rogard_at_[hidden]
Date: 2009-11-03 11:58:25

Author: e_r
Date: 2009-11-03 11:58:24 EST (Tue, 03 Nov 2009)
New Revision: 57330
URL: http://svn.boost.org/trac/boost/changeset/57330

Log:
a
Added:
   sandbox/statistics/detail/functor/
   sandbox/statistics/detail/functor/boost/
   sandbox/statistics/detail/functor/boost/statistics/
   sandbox/statistics/detail/functor/boost/statistics/detail/
   sandbox/statistics/detail/functor/boost/statistics/detail/functor/
   sandbox/statistics/detail/functor/boost/statistics/detail/functor/range_visitor.hpp   (contents, props changed)

Added: sandbox/statistics/detail/functor/boost/statistics/detail/functor/range_visitor.hpp
==============================================================================
--- (empty file)
+++ sandbox/statistics/detail/functor/boost/statistics/detail/functor/range_visitor.hpp	2009-11-03 11:58:24 EST (Tue, 03 Nov 2009)
@@ -0,0 +1,76 @@
+///////////////////////////////////////////////////////////////////////////////
+// boost::statistics::detail::functor::range_visitor.hpp                     //
+//                                                                           //
+//  Copyright 2009 Erwann Rogard. 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_STATISTICS_DETAIL_FUNCTOR_RANGE_VISITOR_HPP_ER_2009
+#define BOOST_STATISTICS_DETAIL_FUNCTOR_RANGE_VISITOR_HPP_ER_2009
+#include <iterator>
+#include <boost/range.hpp>
+#include <boost/utility.hpp>
+
+namespace boost{
+namespace statistics{
+namespace detail{
+namespace functor{
+
+    // Models Generator
+    //
+    // Successively returns elements of a range
+    template<typename R>
+    class range_visitor{
+        typedef typename range_iterator<R>::type it_t;
+        typedef std::size_t size_type;
+
+        public:
+        range_visitor(){}
+        range_visitor(const R& r):r_(r){ this-> reset(0); }
+        range_visitor(const range_visitor& that)
+            :r_(that.r_)
+        {
+            this->reset(
+                std::distance(
+                    boost::begin(that.r_),
+                    that.it_
+                )
+            );
+        }
+        range_visitor& operator=(const range_visitor& that)
+        {
+            if(&that!=this){
+                this->r_ = that.r_;
+                this->reset(
+                    std::distance(
+                        boost::begin(that.r_),
+                        that.it_
+                    )
+                );
+            }
+            return *this;
+        }
+
+        typedef typename range_value<R>::type result_type;
+
+        result_type operator()(){
+            typedef typename range_visitor<R>::result_type x_;
+            return *(this->it_++);
+        }
+
+        void reset(size_type n)
+        {
+            this->it_ = boost::next(boost::begin(this->r_),n);
+        }
+        
+        private:
+        R r_;
+        it_t it_;
+    };
+
+}// functor
+}// detail
+}// statistics
+}// boost
+
+#endif
\ No newline at end of file