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+/*
+ * 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/iostreams for documentation.
+
+ * File:        boost/iostreams/detail/functional.hpp
+ * Date:        Sun Dec 09 05:38:03 MST 2007
+ * Copyright:   2007-2008 CodeRage, LLC
+ * Author:      Jonathan Turkanis
+ * Contact:     turkanis at coderage dot com
+
+ * Defines several function objects and object generators for use with 
+ * execute_all()
+ */
+
+#ifndef BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED
+#define BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+#include <boost/iostreams/close.hpp>
+#include <boost/iostreams/detail/ios.hpp> // BOOST_IOS
+
+namespace boost { namespace iostreams { namespace detail {
+
+    // Function objects and object generators for invoking
+    // boost::iostreams::close
+
+template<typename T>
+class device_close_operation {
+public:
+    typedef void result_type;
+    device_close_operation(T& t, BOOST_IOS::openmode which) 
+        : t_(t), which_(which) 
+        { }
+    void operator()() const { boost::iostreams::close(t_, which_); }
+private:
+    device_close_operation& operator=(const device_close_operation&);
+    T&                   t_;
+    BOOST_IOS::openmode  which_;
+};
+
+template<typename T, typename Sink>
+class filter_close_operation {
+public:
+    typedef void result_type;
+    filter_close_operation(T& t, Sink& snk, BOOST_IOS::openmode which)
+        : t_(t), snk_(snk), which_(which)
+        { }
+    void operator()() const { boost::iostreams::close(t_, snk_, which_); }
+private:
+    filter_close_operation& operator=(const filter_close_operation&);
+    T&                   t_;
+    Sink&                snk_;
+    BOOST_IOS::openmode  which_;
+};
+
+template<typename T>
+device_close_operation<T> 
+call_close(T& t, BOOST_IOS::openmode which) 
+{ return device_close_operation<T>(t, which); }
+
+template<typename T, typename Sink>
+filter_close_operation<T, Sink> 
+call_close(T& t, Sink& snk, BOOST_IOS::openmode which) 
+{ return filter_close_operation<T, Sink>(t, snk, which); }
+
+    // Function objects and object generators for invoking
+    // boost::iostreams::detail::close_all
+
+template<typename T>
+class device_close_all_operation {
+public:
+    typedef void result_type;
+    device_close_all_operation(T& t) : t_(t) { }
+    void operator()() const { detail::close_all(t_); }
+private:
+    device_close_all_operation& operator=(const device_close_all_operation&);
+    T& t_;
+};
+
+template<typename T, typename Sink>
+class filter_close_all_operation {
+public:
+    typedef void result_type;
+    filter_close_all_operation(T& t, Sink& snk) : t_(t), snk_(snk) { }
+    void operator()() const { detail::close_all(t_, snk_); }
+private:
+    filter_close_all_operation& operator=(const filter_close_all_operation&);
+    T&     t_;
+    Sink&  snk_;
+};
+
+template<typename T>
+device_close_all_operation<T> call_close_all(T& t) 
+{ return device_close_all_operation<T>(t); }
+
+template<typename T, typename Sink>
+filter_close_all_operation<T, Sink> 
+call_close_all(T& t, Sink& snk) 
+{ return filter_close_all_operation<T, Sink>(t, snk); }
+
+    // Function object and object generator for invoking a
+    // member function void close(std::ios_base::openmode)
+
+template<typename T>
+class member_close_operation {
+public:
+    typedef void result_type;
+    member_close_operation(T& t, BOOST_IOS::openmode which) 
+        : t_(t), which_(which) 
+        { }
+    void operator()() const { t_.close(which_); }
+private:
+    member_close_operation& operator=(const member_close_operation&);
+    T&                   t_;
+    BOOST_IOS::openmode  which_;
+};
+
+template<typename T>
+member_close_operation<T> call_member_close(T& t, BOOST_IOS::openmode which) 
+{ return member_close_operation<T>(t, which); }
+
+    // Function object and object generator for invoking a
+    // member function void reset()
+
+template<typename T>
+class reset_operation {
+public:
+    reset_operation(T& t) : t_(t) { }
+    void operator()() const { t_.reset(); }
+private:
+    reset_operation& operator=(const reset_operation&);
+    T& t_;
+};
+
+template<typename T>
+reset_operation<T> call_reset(T& t) { return reset_operation<T>(t); }
+
+    // Function object and object generator for clearing a flag
+
+template<typename T>
+class clear_flags_operation {
+public:
+    typedef void result_type;
+    clear_flags_operation(T& t) : t_(t) { }
+    void operator()() const { t_ = 0; }
+private:
+    clear_flags_operation& operator=(const clear_flags_operation&);
+    T& t_;
+};
+
+template<typename T>
+clear_flags_operation<T> clear_flags(T& t) 
+{ return clear_flags_operation<T>(t); }
+
+    // Function object and generator for flushing a buffer
+
+// Function object for use with execute_all()
+template<typename Buffer, typename Device>
+class flush_buffer_operation {
+public:
+    typedef void result_type;
+    flush_buffer_operation(Buffer& buf, Device& dev, bool flush)
+        : buf_(buf), dev_(dev), flush_(flush)
+        { }
+    void operator()() const
+    {
+        if (flush_) 
+            buf_.flush(dev_);
+    }
+private:
+    flush_buffer_operation& operator=(const flush_buffer_operation&);
+    Buffer&  buf_;
+    Device&  dev_;
+    bool     flush_;
+};
+
+template<typename Buffer, typename Device>
+flush_buffer_operation<Buffer, Device> 
+flush_buffer(Buffer& buf, Device& dev, bool flush)
+{ return flush_buffer_operation<Buffer, Device>(buf, dev, flush); }
+
+} } } // End namespaces detail, iostreams, boost.
+
+#endif // #ifndef BOOST_IOSTREAMS_DETAIL_FUNCTIONAL_HPP_INCLUDED