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