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Diffstat (limited to 'boost/chrono/io/duration_units.hpp')
| -rw-r--r-- | boost/chrono/io/duration_units.hpp | 1003 |
1 files changed, 1003 insertions, 0 deletions
diff --git a/boost/chrono/io/duration_units.hpp b/boost/chrono/io/duration_units.hpp new file mode 100644 index 0000000000..84faa819a9 --- /dev/null +++ b/boost/chrono/io/duration_units.hpp @@ -0,0 +1,1003 @@ +// (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). +// + +#ifndef BOOST_CHRONO_IO_DURATION_UNITS_HPP +#define BOOST_CHRONO_IO_DURATION_UNITS_HPP + +#include <boost/chrono/config.hpp> +#include <boost/ratio/ratio_io.hpp> +#include <boost/chrono/duration.hpp> +#include <boost/chrono/io/duration_style.hpp> +#include <boost/chrono/io/ios_base_state.hpp> +#include <boost/assert.hpp> +#include <string> +#include <ios> +#include <locale> +#include <algorithm> + +namespace boost +{ + namespace chrono + { + class rt_ratio + { + public: + template <typename Period> + rt_ratio(Period const&) : + num(Period::type::num), den(Period::type::den) + { + } + + rt_ratio(intmax_t n = 0, intmax_t d = 0) : + num(n), den(d) + { + } + + intmax_t num; + intmax_t den; + }; + + /** + * @c duration_units facet gives useful information about the duration units, + * as the number of plural forms, the plural form associated to a duration, + * the text associated to a plural form and a duration's period, + */ + template <typename CharT = char> + class duration_units: public std::locale::facet + { + public: + /** + * Type of character the facet is instantiated on. + */ + typedef CharT char_type; + /** + * Type of character string passed to member functions. + */ + typedef std::basic_string<CharT> string_type; + + /** + * Unique identifier for this type of facet. + */ + static std::locale::id id; + + /** + * Construct a @c duration_units facet. + * @param refs + * @Effects Construct a @c duration_units facet. + * If the @c refs argument is @c 0 then destruction of the object is + * delegated to the @c locale, or locales, containing it. This allows + * the user to ignore lifetime management issues. On the other had, + * if @c refs is @c 1 then the object must be explicitly deleted; + * the @c locale will not do so. In this case, the object can be + * maintained across the lifetime of multiple locales. + */ + explicit duration_units(size_t refs = 0) : + std::locale::facet(refs) + { + } + + /** + * @return pointer to the start of valid [N/D] units. + */ + virtual const string_type* get_n_d_valid_units_start() const =0; + /** + * @effect calls the do_... + * @return pointer to the end of valid [N/D] units. + */ + virtual const string_type* get_n_d_valid_units_end() const=0; + + /** + * @return pointer to the start of valid units, symbol or prefix with its different plural forms. + */ + virtual const string_type* get_valid_units_start() const=0; + /** + * @return pointer to the end of valid units. + */ + virtual const string_type* get_valid_units_end() const=0; + + /** + * @param k the found pointer to the [N/D] unit. + * @return true if @c k matches a valid unit. + */ + virtual bool match_n_d_valid_unit(const string_type* k) const = 0; + /** + * @param k the found pointer to the unit. + * @Effects @c rt is set to the valid Period when the @c k matches a valid unit. + * @return true if @c k matches a valid unit. + */ + virtual bool match_valid_unit(const string_type* k, rt_ratio& rt) const = 0; + + /** + * @effect calls the do_... + * @return the pattern to be used by default. + */ + virtual string_type get_pattern() const=0; + + /** + * @effect calls the do_... + * @return the unit associated to this duration. + */ + template <typename Rep, typename Period> + string_type get_unit(duration_style style, duration<Rep, Period> const& d) const + { + return do_get_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count())); + } + /** + * @effect calls the do_... + * @return the [N/D] suffix unit associated to this duration. + */ + template <typename Rep, typename Period> + string_type get_n_d_unit(duration_style style, duration<Rep, Period> const& d) const + { + return do_get_n_d_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count())); + } + + /** + * @effect calls the do_... + * @return true if the unit associated to the given Period is named, false otherwise. + */ + template <typename Period> + bool is_named_unit() const + { + return do_is_named_unit(rt_ratio(Period())); + } + + + protected: + + /** + * @Effects Destroys the facet + */ + virtual ~duration_units() + { + } + /** + * @return the [N/D] suffix unit associated to this duration. + */ + virtual string_type do_get_n_d_unit(duration_style style, rt_ratio rt, intmax_t v) const = 0; + /** + * @return the unit associated to this duration. + */ + virtual string_type do_get_unit(duration_style style,rt_ratio rt, intmax_t v) const = 0; + /** + * @return true if the unit associated to the given Period is named, false otherwise. + */ + virtual bool do_is_named_unit(rt_ratio rt) const =0; + + }; + + template <typename CharT> + std::locale::id duration_units<CharT>::id; + + namespace detail + { + template<typename CharT> + struct duration_units_default_holder + { + typedef std::basic_string<CharT> string_type; + static string_type* n_d_valid_units_; + static string_type* valid_units_; + static bool initialized_; + }; + template <typename CharT> + typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::n_d_valid_units_=0; + template <typename CharT> + typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::valid_units_=0; + template<typename CharT> + bool duration_units_default_holder<CharT>::initialized_ = false; + } + + /** + * This class is used to define the strings for the default English + */ + template <typename CharT = char> + class duration_units_default: public duration_units<CharT> + { + protected: + static const std::size_t pfs_ = 2; + + public: + /** + * Type of character the facet is instantiated on. + */ + typedef CharT char_type; + /** + * Type of character string passed to member functions. + */ + typedef std::basic_string<CharT> string_type; + + /** + * Construct a @c duration_units_default facet. + * @param refs + * @Effects Construct a @c duration_units_default facet. + * If the @c refs argument is @c 0 then destruction of the object is + * delegated to the @c locale, or locales, containing it. This allows + * the user to ignore lifetime management issues. On the other had, + * if @c refs is @c 1 then the object must be explicitly deleted; + * the @c locale will not do so. In this case, the object can be + * maintained across the lifetime of multiple locales. + */ + explicit duration_units_default(size_t refs = 0) : + duration_units<CharT> (refs) + { + } + + /** + * Destroys the facet. + */ + ~duration_units_default() + { + } + + public: + + /** + * @param k the found pointer to the [N/D] unit. + * @return true if @c k matches a valid unit. + */ + bool match_n_d_valid_unit(const string_type* k) const + { + std::size_t index = (k - get_n_d_valid_units_start()) / (pfs_ + 1); + switch (index) + { + case 0: + break; + default: + return false; + } + return true; + } + /** + * @param k the found pointer to the unit. + * @Effects @c rt is set to the valid Period when the @c k matches a valid unit. + * @return true if @c k matches a valid unit. + */ + bool match_valid_unit(const string_type* k, rt_ratio& rt) const + { + std::size_t index = (k - get_valid_units_start()) / (pfs_ + 1); + switch (index) + { + case 0: + rt = rt_ratio(atto()); + break; + case 1: + rt = rt_ratio(femto()); + break; + case 2: + rt = rt_ratio(pico()); + break; + case 3: + rt = rt_ratio(nano()); + break; + case 4: + rt = rt_ratio(micro()); + break; + case 5: + rt = rt_ratio(milli()); + break; + case 6: + rt = rt_ratio(centi()); + break; + case 7: + rt = rt_ratio(deci()); + break; + case 8: + rt = rt_ratio(deca()); + break; + case 9: + rt = rt_ratio(hecto()); + break; + case 10: + rt = rt_ratio(kilo()); + break; + case 11: + rt = rt_ratio(mega()); + break; + case 12: + rt = rt_ratio(giga()); + break; + case 13: + rt = rt_ratio(tera()); + break; + case 14: + rt = rt_ratio(peta()); + break; + case 15: + rt = rt_ratio(exa()); + break; + case 16: + rt = rt_ratio(ratio<1> ()); + break; + case 17: + rt = rt_ratio(ratio<60> ()); + break; + case 18: + rt = rt_ratio(ratio<3600> ()); + break; + default: + return false; + } + return true; + } + + /** + * @return pointer to the start of valid [N/D] units. + */ + virtual const string_type* get_n_d_valid_units_start()const + { + return detail::duration_units_default_holder<CharT>::n_d_valid_units_; + } + /** + * @return pointer to the end of valid [N/D] units. + */ + virtual const string_type* get_n_d_valid_units_end()const + { + return detail::duration_units_default_holder<CharT>::n_d_valid_units_ + (pfs_ + 1); + } + + /** + * @return pointer to the start of valid units. + */ + virtual const string_type* get_valid_units_start() const + { + return detail::duration_units_default_holder<CharT>::valid_units_; + } + /** + * @return pointer to the end of valid units. + */ + virtual const string_type* get_valid_units_end() const + { + return detail::duration_units_default_holder<CharT>::valid_units_ + 19 * (pfs_ + 1); + } + + string_type get_pattern() const + { + static const CharT t[] = + { '%', 'v', ' ', '%', 'u' }; + static const string_type pattern(t, t + sizeof (t) / sizeof (t[0])); + + return pattern; + } + + protected: + /** + * + * This facet names the units associated to the following periods: + * atto,femto,pico,nano,micro,milli,centi,deci,ratio<1>,deca,hecto,kilo,mega,giga,tera,peta,exa,ratio<60> and ratio<3600>. + * @return true if the unit associated to the given Period is named, false otherwise. + */ + bool do_is_named_unit(rt_ratio rt) const + { + if (rt.num==1) { + switch (rt.den) + { + case BOOST_RATIO_INTMAX_C(1): + case BOOST_RATIO_INTMAX_C(10): + case BOOST_RATIO_INTMAX_C(100): + case BOOST_RATIO_INTMAX_C(1000): + case BOOST_RATIO_INTMAX_C(1000000): + case BOOST_RATIO_INTMAX_C(1000000000): + case BOOST_RATIO_INTMAX_C(1000000000000): + case BOOST_RATIO_INTMAX_C(1000000000000000): + case BOOST_RATIO_INTMAX_C(1000000000000000000): + return true; + default: + return false; + } + } else if (rt.den==1) { + switch (rt.num) + { + case BOOST_RATIO_INTMAX_C(10): + case BOOST_RATIO_INTMAX_C(60): + case BOOST_RATIO_INTMAX_C(100): + case BOOST_RATIO_INTMAX_C(1000): + case BOOST_RATIO_INTMAX_C(3600): + case BOOST_RATIO_INTMAX_C(1000000): + case BOOST_RATIO_INTMAX_C(1000000000): + case BOOST_RATIO_INTMAX_C(1000000000000): + case BOOST_RATIO_INTMAX_C(1000000000000000): + case BOOST_RATIO_INTMAX_C(1000000000000000000): + return true; + default: + return false; + } + } + return false; + + } + + /** + * In English the suffix used after [N/D] is the one associated to the period ratio<1>. + * @return the [N/D] suffix unit associated to this duration. + */ + string_type do_get_n_d_unit(duration_style style, rt_ratio, intmax_t v) const + { + return do_get_unit(style, ratio<1>(), do_get_plural_form(v)); + } + + /** + * @return the unit associated to this duration if it is named, "" otherwise. + */ + string_type do_get_unit(duration_style style, rt_ratio rt, intmax_t v) const + { + if (rt.num==1) { + switch (rt.den) + { + case BOOST_RATIO_INTMAX_C(1): + return do_get_unit(style, ratio<1>(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(10): + return do_get_unit(style, deci(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(100): + return do_get_unit(style, centi(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000): + return do_get_unit(style, milli(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000): + return do_get_unit(style, micro(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000): + return do_get_unit(style, nano(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000): + return do_get_unit(style, pico(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000000): + return do_get_unit(style, femto(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000000000): + return do_get_unit(style, atto(), do_get_plural_form(v)); + default: + ; + } + } else if (rt.den==1) { + switch (rt.num) + { + case BOOST_RATIO_INTMAX_C(10): + return do_get_unit(style, deca(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(60): + return do_get_unit(style, ratio<60>(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(100): + return do_get_unit(style, hecto(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000): + return do_get_unit(style, kilo(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(3600): + return do_get_unit(style, ratio<3600>(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000): + return do_get_unit(style, mega(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000): + return do_get_unit(style, giga(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000): + return do_get_unit(style, tera(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000000): + return do_get_unit(style, peta(), do_get_plural_form(v)); + case BOOST_RATIO_INTMAX_C(1000000000000000000): + return do_get_unit(style, exa(), do_get_plural_form(v)); + default: + ; + } + } + BOOST_ASSERT(false&&"ratio parameter can not be translated"); + //throw "exception"; + return string_type(); + } + + protected: + /** + * @return the number of associated plural forms this facet manages. + */ + virtual std::size_t do_get_plural_forms() const + { + return static_get_plural_forms(); + } + static std::size_t static_get_plural_forms() + { + return pfs_; + } + /** + * Gets the associated plural form. + * @param value the duration representation + * @return the plural form associated to the @c value parameter. In English there are 2 plural forms + * 0 singular (-1 or 1) + * 1 plural for all others + */ + virtual std::size_t do_get_plural_form(int_least64_t value) const + { + return static_get_plural_form(value); + } + static std::size_t static_get_plural_form(int_least64_t value) + { + return (value == -1 || value == 1) ? 0 : 1; + } + + /** + * @param style the duration style. + * @param period the period associated to the duration seconds. + * @param pf the requested plural form. + * @return if style is symbol returns "s", otherwise if pf is 0 return "second", if pf is 1 "seconds" + */ + virtual string_type do_get_unit(duration_style style, ratio<1> u, std::size_t pf) const + { + return static_get_unit(style,u,pf); + } + static string_type static_get_unit(duration_style style, ratio<1> , std::size_t pf) + { + static const CharT t[] = + { 's' }; + static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); + static const CharT u[] = + { 's', 'e', 'c', 'o', 'n', 'd' }; + static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); + static const CharT v[] = + { 's', 'e', 'c', 'o', 'n', 'd', 's' }; + static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); + + if (style == duration_style::symbol) + { + return symbol; + } + if (pf == 0) + { + return singular; + } + if (pf == 1) + { + return plural; + } + BOOST_ASSERT(false&&"style/pf parameters not valid"); + //throw "exception"; + return string_type(); + } + + /** + * @param style the duration style. + * @param period the period associated to the duration minutes. + * @param pf the requested plural form. + * @return if style is symbol returns "min", otherwise if pf is 0 return "minute", if pf is 1 "minutes" + */ + virtual string_type do_get_unit(duration_style style, ratio<60> u, std::size_t pf) const + { + return static_get_unit(style,u,pf); + } + static string_type static_get_unit(duration_style style, ratio<60> , std::size_t pf) + { + static const CharT t[] = + { 'm', 'i', 'n' }; + static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); + + static const CharT u[] = + { 'm', 'i', 'n', 'u', 't', 'e' }; + static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); + static const CharT v[] = + { 'm', 'i', 'n', 'u', 't', 'e', 's' }; + static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); + + if (style == duration_style::symbol) return symbol; + if (pf == 0) return singular; + if (pf == 1) return plural; + BOOST_ASSERT(false&&"style/pf parameters not valid"); + //throw "exception"; + return string_type(); + + } + + /** + * @param style the duration style. + * @param period the period associated to the duration hours. + * @param pf the requested plural form. + * @return if style is symbol returns "h", otherwise if pf is 0 return "hour", if pf is 1 "hours" + */ + virtual string_type do_get_unit(duration_style style, ratio<3600> u, std::size_t pf) const + { + return static_get_unit(style,u,pf); + } + static string_type static_get_unit(duration_style style, ratio<3600> , std::size_t pf) + { + static const CharT t[] = + { 'h' }; + static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); + static const CharT u[] = + { 'h', 'o', 'u', 'r' }; + static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); + static const CharT v[] = + { 'h', 'o', 'u', 'r', 's' }; + static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); + + if (style == duration_style::symbol) return symbol; + if (pf == 0) return singular; + if (pf == 1) return plural; + BOOST_ASSERT(false&&"style/pf parameters not valid"); + //throw "exception"; + return string_type(); + + } + /** + * @param style the duration style. + * @param u the period tag atto. + * @param pf the requested plural form. + * @return the concatenation of the prefix associated to @c period + the one associated to seconds. + */ + virtual string_type do_get_unit(duration_style style, atto u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, atto u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + /** + * @param style the duration style. + * @param u the period tag femto. + * @param pf the requested plural form. + * @return the concatenation of the prefix associated to period @c u + the one associated to seconds. + */ + virtual string_type do_get_unit(duration_style style, femto u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, femto u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + /** + * @param style the duration style. + * @param u the period tag femto. + * @param pf the requested plural form. + * @return the concatenation of the prefix associated to period @c u + the one associated to seconds. + */ + virtual string_type do_get_unit(duration_style style, pico u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, pico u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, nano u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, nano u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, micro u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, micro u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, milli u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, milli u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, centi u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, centi u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, deci u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, deci u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, deca u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, deca u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, hecto u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, hecto u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, kilo u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, kilo u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, mega u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, mega u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, giga u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, giga u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, tera u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, tera u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, peta u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, peta u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + virtual string_type do_get_unit(duration_style style, exa u, std::size_t pf) const + { + return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); + } + static string_type static_get_unit(duration_style style, exa u, std::size_t pf) + { + return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); + } + + protected: + + /** + * @param style the duration style. + * @param u the period tag atto. + * @return depending on the value of @c style return the ratio_string symbol or prefix. + */ + virtual string_type do_get_ratio_prefix(duration_style style, atto u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, atto) + { + if (style == duration_style::symbol) return ratio_string<atto, CharT>::symbol(); + return ratio_string<atto, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, femto u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, femto) + { + if (style == duration_style::symbol) return ratio_string<femto, CharT>::symbol(); + return ratio_string<femto, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, pico u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, pico) + { + if (style == duration_style::symbol) return ratio_string<pico, CharT>::symbol(); + return ratio_string<pico, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, nano u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, nano) + { + if (style == duration_style::symbol) return ratio_string<nano, CharT>::symbol(); + return ratio_string<nano, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, micro u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, micro) + { + if (style == duration_style::symbol) return ratio_string<micro, CharT>::symbol(); + return ratio_string<micro, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, milli u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, milli) + { + if (style == duration_style::symbol) return ratio_string<milli, CharT>::symbol(); + return ratio_string<milli, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, centi u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, centi) + { + if (style == duration_style::symbol) return ratio_string<centi, CharT>::symbol(); + return ratio_string<centi, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, deci u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, deci) + { + if (style == duration_style::symbol) return ratio_string<deci, CharT>::symbol(); + return ratio_string<deci, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, deca u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, deca) + { + if (style == duration_style::symbol) return ratio_string<deca, CharT>::symbol(); + return ratio_string<deca, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, hecto u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, hecto) + { + if (style == duration_style::symbol) return ratio_string<hecto, CharT>::symbol(); + return ratio_string<hecto, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, kilo u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, kilo) + { + if (style == duration_style::symbol) return ratio_string<kilo, CharT>::symbol(); + return ratio_string<kilo, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, mega u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, mega) + { + if (style == duration_style::symbol) return ratio_string<mega, CharT>::symbol(); + return ratio_string<mega, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, giga u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, giga) + { + if (style == duration_style::symbol) return ratio_string<giga, CharT>::symbol(); + return ratio_string<giga, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, tera u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, tera) + { + if (style == duration_style::symbol) return ratio_string<tera, CharT>::symbol(); + return ratio_string<tera, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, peta u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, peta) + { + if (style == duration_style::symbol) return ratio_string<peta, CharT>::symbol(); + return ratio_string<peta, CharT>::prefix(); + } + virtual string_type do_get_ratio_prefix(duration_style style, exa u) const + { + return static_get_ratio_prefix(style, u); + } + static string_type static_get_ratio_prefix(duration_style style, exa) + { + if (style == duration_style::symbol) return ratio_string<exa, CharT>::symbol(); + return ratio_string<exa, CharT>::prefix(); + } + + protected: + template <typename Period> + string_type* fill_units(string_type* it, Period) const + { + std::size_t pfs = do_get_plural_forms(); + for (std::size_t pf = 0; pf < pfs; ++pf) + { + *it++ = do_get_unit(duration_style::prefix, Period(), pf); + } + *it++ = do_get_unit(duration_style::symbol, Period(), 0); + return it; + } + public: + template <typename Period> + static string_type* static_fill_units(string_type* it, Period) + { + std::size_t pfs = static_get_plural_forms(); + for (std::size_t pf = 0; pf < pfs; ++pf) + { + *it++ = static_get_unit(duration_style::prefix, Period(), pf); + } + *it++ = static_get_unit(duration_style::symbol, Period(), 0); + return it; + } + static string_type* static_init_valid_units(string_type* it) + { + it = static_fill_units(it, atto()); + it = static_fill_units(it, femto()); + it = static_fill_units(it, pico()); + it = static_fill_units(it, nano()); + it = static_fill_units(it, micro()); + it = static_fill_units(it, milli()); + it = static_fill_units(it, centi()); + it = static_fill_units(it, deci()); + it = static_fill_units(it, deca()); + it = static_fill_units(it, hecto()); + it = static_fill_units(it, kilo()); + it = static_fill_units(it, mega()); + it = static_fill_units(it, giga()); + it = static_fill_units(it, tera()); + it = static_fill_units(it, peta()); + it = static_fill_units(it, exa()); + it = static_fill_units(it, ratio<1> ()); + it = static_fill_units(it, ratio<60> ()); + it = static_fill_units(it, ratio<3600> ()); + return it; + } + }; + + namespace detail + { + + template<typename CharT> + struct duration_units_default_initializer_t + { + duration_units_default_initializer_t() + { + if (!duration_units_default_holder<CharT>::initialized_) + { + typedef typename duration_units_default_holder<CharT>::string_type string_type; + duration_units_default_holder<CharT>::n_d_valid_units_ = new string_type[3]; + duration_units_default_holder<CharT>::valid_units_ = new string_type[19 * 3]; + + string_type* it = duration_units_default_holder<CharT>::n_d_valid_units_; + it = duration_units_default<CharT>::static_fill_units(it, ratio<1> ()); + it = duration_units_default<CharT>::static_init_valid_units(duration_units_default_holder<CharT>::valid_units_); + + duration_units_default_holder<CharT>::initialized_ = true; + } + } + ~duration_units_default_initializer_t() + { + if (duration_units_default_holder<CharT>::initialized_) + { + delete[] duration_units_default_holder<CharT>::n_d_valid_units_; + duration_units_default_holder<CharT>::n_d_valid_units_ = 0; + delete[] duration_units_default_holder<CharT>::valid_units_; + duration_units_default_holder<CharT>::valid_units_ = 0; + duration_units_default_holder<CharT>::initialized_ = false; + } + } + }; + namespace /**/ + { + duration_units_default_initializer_t<char> duration_units_default_initializer; + duration_units_default_initializer_t<wchar_t> wduration_units_default_initializer; + } // namespace + } + } // chrono + +} // boost + +#endif // header |