Chris@16: #ifndef DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
Chris@16: #define DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
Chris@16: 
Chris@16: /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
Chris@16:  * Use, modification and distribution is subject to the
Chris@16:  * Boost Software License, Version 1.0. (See accompanying
Chris@16:  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  * Author: Jeff Garland, Bart Garst
Chris@101:  * $Date$
Chris@16:  */
Chris@16: 
Chris@16: 
Chris@16: #include <boost/cstdint.hpp>
Chris@16: #include <boost/date_time/time_defs.hpp>
Chris@16: #include <boost/date_time/int_adapter.hpp>
Chris@16: #include <boost/date_time/compiler_config.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace date_time {
Chris@16: 
Chris@16:   //! Simple function to calculate absolute value of a numeric type
Chris@16:   template <typename T>
Chris@16:   // JDG [7/6/02 made a template],
Chris@16:   // moved here from time_duration.hpp 2003-Sept-4.
Chris@16:   inline T absolute_value(T x)
Chris@16:   {
Chris@16:     return x < 0 ? -x : x;
Chris@16:   }
Chris@16: 
Chris@16:   //! traits struct for time_resolution_traits implementation type
Chris@16:   struct time_resolution_traits_bi32_impl {
Chris@16:     typedef boost::int32_t int_type;
Chris@16:     typedef boost::int32_t impl_type;
Chris@16:     static int_type as_number(impl_type i){ return i;}
Chris@16:     //! Used to determine if implemented type is int_adapter or int
Chris@16:     static bool is_adapted() { return false;}
Chris@16:   };
Chris@16:   //! traits struct for time_resolution_traits implementation type
Chris@16:   struct time_resolution_traits_adapted32_impl {
Chris@16:     typedef boost::int32_t int_type;
Chris@16:     typedef boost::date_time::int_adapter<boost::int32_t> impl_type;
Chris@16:     static int_type as_number(impl_type i){ return i.as_number();}
Chris@16:     //! Used to determine if implemented type is int_adapter or int
Chris@16:     static bool is_adapted() { return true;}
Chris@16:   };
Chris@16:   //! traits struct for time_resolution_traits implementation type
Chris@16:   struct time_resolution_traits_bi64_impl {
Chris@16:     typedef boost::int64_t int_type;
Chris@16:     typedef boost::int64_t impl_type;
Chris@16:     static int_type as_number(impl_type i){ return i;}
Chris@16:     //! Used to determine if implemented type is int_adapter or int
Chris@16:     static bool is_adapted() { return false;}
Chris@16:   };
Chris@16:   //! traits struct for time_resolution_traits implementation type
Chris@16:   struct time_resolution_traits_adapted64_impl {
Chris@16:     typedef boost::int64_t int_type;
Chris@16:     typedef boost::date_time::int_adapter<boost::int64_t> impl_type;
Chris@16:     static int_type as_number(impl_type i){ return i.as_number();}
Chris@16:     //! Used to determine if implemented type is int_adapter or int
Chris@16:     static bool is_adapted() { return true;}
Chris@16:   };
Chris@16: 
Chris@16:   template<typename frac_sec_type,
Chris@16:            time_resolutions res,
Chris@16: #if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
Chris@16:            boost::int64_t resolution_adjust,
Chris@16: #else
Chris@16:            typename frac_sec_type::int_type resolution_adjust,
Chris@16: #endif
Chris@16:            unsigned short frac_digits,
Chris@101:            typename var_type = boost::int32_t >
Chris@16:   class time_resolution_traits {
Chris@16:   public:
Chris@16:     typedef typename frac_sec_type::int_type fractional_seconds_type;
Chris@16:     typedef typename frac_sec_type::int_type tick_type;
Chris@16:     typedef typename frac_sec_type::impl_type impl_type;
Chris@101:     typedef var_type  day_type;
Chris@101:     typedef var_type  hour_type;
Chris@101:     typedef var_type  min_type;
Chris@101:     typedef var_type  sec_type;
Chris@16: 
Chris@16:     // bring in function from frac_sec_type traits structs
Chris@16:     static fractional_seconds_type as_number(impl_type i)
Chris@16:     {
Chris@16:       return frac_sec_type::as_number(i);
Chris@16:     }
Chris@16:     static bool is_adapted()
Chris@16:     {
Chris@16:       return frac_sec_type::is_adapted();
Chris@16:     }
Chris@16: 
Chris@16:     //Would like this to be frac_sec_type, but some compilers complain
Chris@16: #if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
Chris@16:     BOOST_STATIC_CONSTANT(boost::int64_t, ticks_per_second = resolution_adjust);
Chris@16: #else
Chris@16:     BOOST_STATIC_CONSTANT(fractional_seconds_type, ticks_per_second = resolution_adjust);
Chris@16: #endif
Chris@16: 
Chris@16:     static time_resolutions resolution()
Chris@16:     {
Chris@16:       return res;
Chris@16:     }
Chris@16:     static unsigned short num_fractional_digits()
Chris@16:     {
Chris@16:       return frac_digits;
Chris@16:     }
Chris@16:     static fractional_seconds_type res_adjust()
Chris@16:     {
Chris@16:       return resolution_adjust;
Chris@16:     }
Chris@16:     //! Any negative argument results in a negative tick_count
Chris@16:     static tick_type to_tick_count(hour_type hours,
Chris@16:                                    min_type  minutes,
Chris@16:                                    sec_type  seconds,
Chris@16:                                    fractional_seconds_type  fs)
Chris@16:     {
Chris@16:       if(hours < 0 || minutes < 0 || seconds < 0 || fs < 0)
Chris@16:       {
Chris@16:         hours = absolute_value(hours);
Chris@16:         minutes = absolute_value(minutes);
Chris@16:         seconds = absolute_value(seconds);
Chris@16:         fs = absolute_value(fs);
Chris@16:         return (((((fractional_seconds_type(hours)*3600)
Chris@16:                    + (fractional_seconds_type(minutes)*60)
Chris@16:                    + seconds)*res_adjust()) + fs) * -1);
Chris@16:       }
Chris@16: 
Chris@16:       return (((fractional_seconds_type(hours)*3600)
Chris@16:                + (fractional_seconds_type(minutes)*60)
Chris@16:                + seconds)*res_adjust()) + fs;
Chris@16:     }
Chris@16: 
Chris@16:   };
Chris@16: 
Chris@16:   typedef time_resolution_traits<time_resolution_traits_adapted32_impl, milli, 1000, 3 > milli_res;
Chris@16:   typedef time_resolution_traits<time_resolution_traits_adapted64_impl, micro, 1000000, 6 > micro_res;
Chris@16:   typedef time_resolution_traits<time_resolution_traits_adapted64_impl, nano,  1000000000, 9 > nano_res;
Chris@16: 
Chris@16: 
Chris@16: } } //namespace date_time
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: #endif