comparison DEPENDENCIES/generic/include/boost/chrono/io/duration_io.hpp @ 16:2665513ce2d3

Add boost headers

+//  (C) Copyright Howard Hinnant
+//  (C) Copyright 2011 Vicente J. Botet Escriba
+//  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).
+//
+// This code was adapted by Vicente from Howard Hinnant's experimental work
+// on chrono i/o to Boost
+
+#ifndef BOOST_CHRONO_IO_DURATION_IO_HPP
+#define BOOST_CHRONO_IO_DURATION_IO_HPP
+
+#include <boost/chrono/duration.hpp>
+#include <boost/ratio/ratio_io.hpp>
+#include <boost/chrono/io/duration_style.hpp>
+#include <boost/chrono/io/ios_base_state.hpp>
+#include <boost/chrono/io/duration_put.hpp>
+#include <boost/chrono/io/duration_get.hpp>
+#include <boost/chrono/io/utility/manip_base.hpp>
+#include <boost/detail/no_exceptions_support.hpp>
+#include <locale>
+#include <iostream>
+
+namespace boost
+{
+  namespace chrono
+  {
+
+    /**
+     * duration parameterized manipulator.
+     */
+
+    class duration_fmt: public manip<duration_fmt>
+    {
+      duration_style style_;
+    public:
+
+      /**
+       * explicit manipulator constructor from a @c duration_style
+       */
+      explicit duration_fmt(duration_style style)BOOST_NOEXCEPT
+      : style_(style)
+      {}
+
+      /**
+       * Change the duration_style ios state;
+       */
+      void operator()(std::ios_base &ios) const
+
+      {
+        set_duration_style(ios, style_);
+      }
+    };
+
+    /**
+     * duration_style i/o saver.
+     *
+     * See Boost.IO i/o state savers for a motivating compression.
+     */
+    struct duration_style_io_saver
+    {
+
+      //! the type of the state to restore
+      typedef std::ios_base state_type;
+      //! the type of aspect to save
+      typedef duration_style aspect_type;
+
+      /**
+       * Explicit construction from an i/o stream.
+       *
+       * Store a reference to the i/o stream and the value of the associated @c duration_style.
+       */
+      explicit duration_style_io_saver(state_type &s) :
+        s_save_(s)
+      {
+        a_save_ = get_duration_style(s_save_);
+      }
+
+      /**
+       * Construction from an i/o stream and a @c duration_style to restore.
+       *
+       * Stores a reference to the i/o stream and the value @c duration_style to restore given as parameter.
+       */
+      duration_style_io_saver(state_type &s, aspect_type new_value) :
+        s_save_(s), a_save_(new_value)
+      {
+      }
+
+      /**
+       * Destructor.
+       *
+       * Restores the i/o stream with the duration_style to be restored.
+       */
+      ~duration_style_io_saver()
+      {
+        this->restore();
+      }
+
+      /**
+       * Restores the i/o stream with the duration_style to be restored.
+       */
+      void restore()
+      {
+        set_duration_style(s_save_, a_save_);
+      }
+
+    private:
+      duration_style_io_saver& operator=(duration_style_io_saver const& rhs) ;
+
+      state_type& s_save_;
+      aspect_type a_save_;
+    };
+
+    /**
+     * duration stream inserter
+     * @param os the output stream
+     * @param d to value to insert
+     * @return @c os
+     */
+    template <class CharT, class Traits, class Rep, class Period>
+    std::basic_ostream<CharT, Traits>&
+    operator<<(std::basic_ostream<CharT, Traits>& os, const duration<Rep, Period>& d)
+    {
+      bool failed = false;
+      BOOST_TRY
+      {
+        std::ios_base::iostate err = std::ios_base::goodbit;
+        BOOST_TRY
+        {
+          typename std::basic_ostream<CharT, Traits>::sentry opfx(os);
+          if (bool(opfx))
+          {
+            if (!std::has_facet<duration_put<CharT> >(os.getloc()))
+            {
+              if (duration_put<CharT> ().put(os, os, os.fill(), d) .failed())
+              {
+                err = std::ios_base::badbit;
+              }
+            }
+            else if (std::use_facet<duration_put<CharT> >(os.getloc()) .put(os, os, os.fill(), d) .failed())
+            {
+              err = std::ios_base::badbit;
+            }
+            os.width(0);
+          }
+        }
+        BOOST_CATCH(...)
+        {
+          bool flag = false;
+          BOOST_TRY
+          {
+            os.setstate(std::ios_base::failbit);
+          }
+          BOOST_CATCH (std::ios_base::failure )
+          {
+            flag = true;
+          }
+          BOOST_CATCH_END
+          if (flag) throw;
+        }
+        BOOST_CATCH_END
+        if (err) os.setstate(err);
+        return os;
+      }
+      BOOST_CATCH(...)
+      {
+        failed = true;
+      }
+      BOOST_CATCH_END
+      if (failed) os.setstate(std::ios_base::failbit | std::ios_base::badbit);
+      return os;
+    }
+
+    /**
+     *
+     * @param is the input stream
+     * @param d the duration
+     * @return @c is
+     */
+    template <class CharT, class Traits, class Rep, class Period>
+    std::basic_istream<CharT, Traits>&
+    operator>>(std::basic_istream<CharT, Traits>& is, duration<Rep, Period>& d)
+    {
+      std::ios_base::iostate err = std::ios_base::goodbit;
+
+      BOOST_TRY
+      {
+        typename std::basic_istream<CharT, Traits>::sentry ipfx(is);
+        if (bool(ipfx))
+        {
+          if (!std::has_facet<duration_get<CharT> >(is.getloc()))
+          {
+            duration_get<CharT> ().get(is, std::istreambuf_iterator<CharT, Traits>(), is, err, d);
+          }
+          else
+          {
+            std::use_facet<duration_get<CharT> >(is.getloc()) .get(is, std::istreambuf_iterator<CharT, Traits>(), is,
+                err, d);
+          }
+        }
+      }
+      BOOST_CATCH (...)
+      {
+        bool flag = false;
+        BOOST_TRY
+        {
+          is.setstate(std::ios_base::failbit);
+        }
+        BOOST_CATCH (std::ios_base::failure )
+        {
+          flag = true;
+        }
+        BOOST_CATCH_END
+        if (flag) { BOOST_RETHROW }
+      }
+      BOOST_CATCH_END
+      if (err) is.setstate(err);
+      return is;
+    }
+
+  } // chrono
+
+}
+
+#endif  // header