[857] | 1 | #ifndef DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
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| 2 | #define DATE_TIME_TIME_RESOLUTION_TRAITS_HPP
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| 3 |
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| 4 | /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
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| 5 | * Use, modification and distribution is subject to the
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| 6 | * Boost Software License, Version 1.0. (See accompanying
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| 7 | * file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
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| 8 | * Author: Jeff Garland, Bart Garst
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| 9 | * $Date: 2003/12/03 03:01:05 $
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| 10 | */
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| 11 |
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| 12 |
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| 13 | #include "boost/date_time/time_defs.hpp"
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| 14 | #include "boost/date_time/int_adapter.hpp"
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| 15 | #include "boost/cstdint.hpp"
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| 16 |
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| 17 | namespace boost {
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| 18 | namespace date_time {
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| 19 |
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| 20 | //! Simple function to calculate absolute value of a numeric type
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| 21 | template <typename T>
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| 22 | // JDG [7/6/02 made a template],
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| 23 | // moved here from time_duration.hpp 2003-Sept-4.
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| 24 | inline T absolute_value(T x)
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| 25 | {
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| 26 | return x < 0 ? -x : x;
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| 27 | }
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| 28 |
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| 29 | //! traits struct for time_resolution_traits implementation type
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| 30 | struct time_resolution_traits_bi32_impl {
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| 31 | typedef boost::int32_t int_type;
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| 32 | typedef boost::int32_t impl_type;
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| 33 | static int_type as_number(impl_type i){ return i;}
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| 34 | //! Used to determine if implemented type is int_adapter or int
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| 35 | static bool is_adapted() { return false;}
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| 36 | };
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| 37 | //! traits struct for time_resolution_traits implementation type
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| 38 | struct time_resolution_traits_adapted32_impl {
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| 39 | typedef boost::int32_t int_type;
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| 40 | typedef boost::date_time::int_adapter<boost::int32_t> impl_type;
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| 41 | static int_type as_number(impl_type i){ return i.as_number();}
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| 42 | //! Used to determine if implemented type is int_adapter or int
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| 43 | static bool is_adapted() { return true;}
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| 44 | };
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| 45 | //! traits struct for time_resolution_traits implementation type
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| 46 | struct time_resolution_traits_bi64_impl {
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| 47 | typedef boost::int64_t int_type;
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| 48 | typedef boost::int64_t impl_type;
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| 49 | static int_type as_number(impl_type i){ return i;}
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| 50 | //! Used to determine if implemented type is int_adapter or int
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| 51 | static bool is_adapted() { return false;}
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| 52 | };
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| 53 | //! traits struct for time_resolution_traits implementation type
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| 54 | struct time_resolution_traits_adapted64_impl {
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| 55 | typedef boost::int64_t int_type;
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| 56 | typedef boost::date_time::int_adapter<boost::int64_t> impl_type;
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| 57 | static int_type as_number(impl_type i){ return i.as_number();}
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| 58 | //! Used to determine if implemented type is int_adapter or int
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| 59 | static bool is_adapted() { return true;}
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| 60 | };
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| 61 |
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| 62 | template<typename frac_sec_type,
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| 63 | time_resolutions res,
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| 64 | #if (defined(BOOST_MSVC) && (_MSC_VER <= 1200)) // 1200 == VC++ 6.0
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| 65 | boost::int64_t resolution_adjust,
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| 66 | #else
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| 67 | typename frac_sec_type::int_type resolution_adjust,
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| 68 | #endif
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| 69 | unsigned short frac_digits,
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| 70 | typename v_type = boost::int32_t >
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| 71 | class time_resolution_traits {
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| 72 | public:
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| 73 | typedef typename frac_sec_type::int_type fractional_seconds_type;
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| 74 | typedef typename frac_sec_type::int_type tick_type;
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| 75 | typedef typename frac_sec_type::impl_type impl_type;
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| 76 | typedef v_type day_type;
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| 77 | typedef v_type hour_type;
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| 78 | typedef v_type min_type;
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| 79 | typedef v_type sec_type;
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| 80 |
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| 81 | // bring in function from frac_sec_type traits structs
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| 82 | static typename frac_sec_type::int_type as_number(typename frac_sec_type::impl_type i)
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| 83 | {
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| 84 | return frac_sec_type::as_number(i);
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| 85 | }
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| 86 | static bool is_adapted()
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| 87 | {
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| 88 | return frac_sec_type::is_adapted();
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| 89 | }
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| 90 |
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| 91 | //Would like this to be frac_sec_type, but some compilers complain
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| 92 | BOOST_STATIC_CONSTANT(int, ticks_per_second = resolution_adjust);
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| 93 | // static const boost::int32_t ticks_per_second = resolution_adjust;
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| 94 |
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| 95 | static time_resolutions resolution()
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| 96 | {
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| 97 | return res;
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| 98 | }
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| 99 | static unsigned short num_fractional_digits()
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| 100 | {
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| 101 | return frac_digits;
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| 102 | }
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| 103 | static fractional_seconds_type res_adjust()
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| 104 | {
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| 105 | return resolution_adjust;
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| 106 | }
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| 107 | //! Any negative argument results in a negative tick_count
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| 108 | static tick_type to_tick_count(hour_type hours,
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| 109 | min_type minutes,
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| 110 | sec_type seconds,
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| 111 | fractional_seconds_type fs)
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| 112 | {
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| 113 | if(hours < 0 || minutes < 0 || seconds < 0 || fs < 0)
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| 114 | {
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| 115 | hours = absolute_value(hours);
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| 116 | minutes = absolute_value(minutes);
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| 117 | seconds = absolute_value(seconds);
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| 118 | fs = absolute_value(fs);
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| 119 | return (((((fractional_seconds_type(hours)*3600)
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| 120 | + (fractional_seconds_type(minutes)*60)
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| 121 | + seconds)*res_adjust()) + fs) * -1);
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| 122 | }
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| 123 | else{
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| 124 | return (((fractional_seconds_type(hours)*3600)
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| 125 | + (fractional_seconds_type(minutes)*60)
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| 126 | + seconds)*res_adjust()) + fs;
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | };
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| 131 |
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| 132 | typedef time_resolution_traits<time_resolution_traits_adapted32_impl, milli, 1000, 3 > milli_res;
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| 133 | typedef time_resolution_traits<time_resolution_traits_adapted64_impl, micro, 1000000, 6 > micro_res;
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| 134 | typedef time_resolution_traits<time_resolution_traits_adapted64_impl, nano, 1000000000, 9 > nano_res;
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| 135 |
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| 136 |
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| 137 | } } //namespace date_time
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| 138 |
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| 139 |
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| 140 |
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| 141 | #endif
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