imgtools/imglib/boostlibrary/boost/tr1/detail/functor2iterator.hpp
changeset 600 6d08f4a05d93
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/boostlibrary/boost/tr1/detail/functor2iterator.hpp	Fri Jun 25 18:11:34 2010 +0800
@@ -0,0 +1,34 @@
+//  (C) Copyright John Maddock 2005.
+//  Use, modification and distribution are subject to 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_TR1_FUNCTOR_IT_HPP_INCLUDED
+#  define BOOST_TR1_FUNCTOR_IT_HPP_INCLUDED
+
+# include <boost/iterator/iterator_facade.hpp>
+
+namespace boost{ namespace tr1_details{
+
+template <class Func, class R>
+struct functor2iterator : boost::iterator_facade<functor2iterator<Func,R>, const R, std::input_iterator_tag>
+{
+   functor2iterator() : m_func(0){}
+   functor2iterator(Func& f)
+      : m_func(&f)
+   {
+      m_val = (*m_func)();
+   }
+   const R& dereference()const
+   { return m_val; }
+   void increment(){ m_val = (*m_func)(); }
+   bool equal(const functor2iterator&)const
+   { return false; }
+private:
+   Func* m_func;
+   R m_val;
+};
+
+} }
+
+#endif