[44] | 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.txt or http://www.boost.org/LICENSE_1_0.txt) |
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| 8 | * Author: Jeff Garland, Bart Garst |
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| 9 | * $Date: 2009-06-06 07:25:55 -0400 (Sat, 06 Jun 2009) $ |
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| 10 | */ |
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| 11 | |
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| 12 | |
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| 13 | #include <boost/cstdint.hpp> |
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| 14 | #include <boost/date_time/time_defs.hpp> |
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| 15 | #include <boost/date_time/int_adapter.hpp> |
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| 16 | #include <boost/date_time/compiler_config.hpp> |
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| 17 | |
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| 18 | namespace boost { |
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| 19 | namespace date_time { |
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| 20 | |
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| 21 | //! Simple function to calculate absolute value of a numeric type |
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| 22 | template <typename T> |
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| 23 | // JDG [7/6/02 made a template], |
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| 24 | // moved here from time_duration.hpp 2003-Sept-4. |
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| 25 | inline T absolute_value(T x) |
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| 26 | { |
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| 27 | return x < 0 ? -x : x; |
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| 28 | } |
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| 29 | |
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| 30 | //! traits struct for time_resolution_traits implementation type |
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| 31 | struct time_resolution_traits_bi32_impl { |
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| 32 | typedef boost::int32_t int_type; |
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| 33 | typedef boost::int32_t impl_type; |
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| 34 | static int_type as_number(impl_type i){ return i;} |
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| 35 | //! Used to determine if implemented type is int_adapter or int |
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| 36 | static bool is_adapted() { return false;} |
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| 37 | }; |
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| 38 | //! traits struct for time_resolution_traits implementation type |
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| 39 | struct time_resolution_traits_adapted32_impl { |
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| 40 | typedef boost::int32_t int_type; |
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| 41 | typedef boost::date_time::int_adapter<boost::int32_t> impl_type; |
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| 42 | static int_type as_number(impl_type i){ return i.as_number();} |
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| 43 | //! Used to determine if implemented type is int_adapter or int |
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| 44 | static bool is_adapted() { return true;} |
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| 45 | }; |
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| 46 | //! traits struct for time_resolution_traits implementation type |
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| 47 | struct time_resolution_traits_bi64_impl { |
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| 48 | typedef boost::int64_t int_type; |
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| 49 | typedef boost::int64_t impl_type; |
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| 50 | static int_type as_number(impl_type i){ return i;} |
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| 51 | //! Used to determine if implemented type is int_adapter or int |
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| 52 | static bool is_adapted() { return false;} |
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| 53 | }; |
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| 54 | //! traits struct for time_resolution_traits implementation type |
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| 55 | struct time_resolution_traits_adapted64_impl { |
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| 56 | typedef boost::int64_t int_type; |
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| 57 | typedef boost::date_time::int_adapter<boost::int64_t> impl_type; |
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| 58 | static int_type as_number(impl_type i){ return i.as_number();} |
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| 59 | //! Used to determine if implemented type is int_adapter or int |
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| 60 | static bool is_adapted() { return true;} |
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| 61 | }; |
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| 62 | |
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| 63 | template<typename frac_sec_type, |
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| 64 | time_resolutions res, |
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| 65 | #if (defined(BOOST_MSVC) && (_MSC_VER < 1300)) |
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| 66 | boost::int64_t resolution_adjust, |
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| 67 | #else |
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| 68 | typename frac_sec_type::int_type resolution_adjust, |
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| 69 | #endif |
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| 70 | unsigned short frac_digits, |
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| 71 | typename v_type = boost::int32_t > |
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| 72 | class time_resolution_traits { |
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| 73 | public: |
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| 74 | typedef typename frac_sec_type::int_type fractional_seconds_type; |
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| 75 | typedef typename frac_sec_type::int_type tick_type; |
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| 76 | typedef typename frac_sec_type::impl_type impl_type; |
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| 77 | typedef v_type day_type; |
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| 78 | typedef v_type hour_type; |
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| 79 | typedef v_type min_type; |
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| 80 | typedef v_type sec_type; |
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| 81 | |
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| 82 | // bring in function from frac_sec_type traits structs |
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| 83 | static fractional_seconds_type as_number(impl_type i) |
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| 84 | { |
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| 85 | return frac_sec_type::as_number(i); |
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| 86 | } |
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| 87 | static bool is_adapted() |
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| 88 | { |
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| 89 | return frac_sec_type::is_adapted(); |
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| 90 | } |
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| 91 | |
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| 92 | //Would like this to be frac_sec_type, but some compilers complain |
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| 93 | #if (defined(BOOST_MSVC) && (_MSC_VER < 1300)) |
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| 94 | BOOST_STATIC_CONSTANT(boost::int64_t, ticks_per_second = resolution_adjust); |
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| 95 | #else |
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| 96 | BOOST_STATIC_CONSTANT(fractional_seconds_type, ticks_per_second = resolution_adjust); |
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| 97 | #endif |
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| 98 | |
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| 99 | static time_resolutions resolution() |
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| 100 | { |
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| 101 | return res; |
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| 102 | } |
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| 103 | static unsigned short num_fractional_digits() |
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| 104 | { |
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| 105 | return frac_digits; |
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| 106 | } |
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| 107 | static fractional_seconds_type res_adjust() |
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| 108 | { |
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| 109 | return resolution_adjust; |
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| 110 | } |
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| 111 | //! Any negative argument results in a negative tick_count |
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| 112 | static tick_type to_tick_count(hour_type hours, |
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| 113 | min_type minutes, |
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| 114 | sec_type seconds, |
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| 115 | fractional_seconds_type fs) |
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| 116 | { |
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| 117 | if(hours < 0 || minutes < 0 || seconds < 0 || fs < 0) |
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| 118 | { |
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| 119 | hours = absolute_value(hours); |
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| 120 | minutes = absolute_value(minutes); |
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| 121 | seconds = absolute_value(seconds); |
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| 122 | fs = absolute_value(fs); |
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| 123 | return (((((fractional_seconds_type(hours)*3600) |
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| 124 | + (fractional_seconds_type(minutes)*60) |
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| 125 | + seconds)*res_adjust()) + fs) * -1); |
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| 126 | } |
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| 127 | |
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| 128 | return (((fractional_seconds_type(hours)*3600) |
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| 129 | + (fractional_seconds_type(minutes)*60) |
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| 130 | + seconds)*res_adjust()) + fs; |
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| 131 | } |
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| 132 | |
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| 133 | }; |
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| 134 | |
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| 135 | typedef time_resolution_traits<time_resolution_traits_adapted32_impl, milli, 1000, 3 > milli_res; |
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| 136 | typedef time_resolution_traits<time_resolution_traits_adapted64_impl, micro, 1000000, 6 > micro_res; |
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| 137 | typedef time_resolution_traits<time_resolution_traits_adapted64_impl, nano, 1000000000, 9 > nano_res; |
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| 138 | |
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| 139 | |
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| 140 | } } //namespace date_time |
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| 141 | |
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| 142 | |
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| 143 | |
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| 144 | #endif |
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