| 1 | // |
|---|---|
| 2 | // Copyright (c) 2009-2011 Artyom Beilis (Tonkikh) |
| 3 | // Copyright (c) 2024 Alexander Grund |
| 4 | // |
| 5 | // Distributed under the Boost Software License, Version 1.0. |
| 6 | // https://www.boost.org/LICENSE_1_0.txt |
| 7 | |
| 8 | #include <boost/locale/boundary.hpp> |
| 9 | #include <boost/locale/collator.hpp> |
| 10 | #include <boost/locale/conversion.hpp> |
| 11 | #include <boost/locale/date_time_facet.hpp> |
| 12 | #include <boost/locale/info.hpp> |
| 13 | #include <boost/locale/message.hpp> |
| 14 | #include "boost/locale/util/foreach_char.hpp" |
| 15 | #include <boost/core/ignore_unused.hpp> |
| 16 | |
| 17 | namespace boost { namespace locale { |
| 18 | namespace detail { |
| 19 | template<class Derived> |
| 20 | std::locale::id facet_id<Derived>::id; |
| 21 | } // namespace detail |
| 22 | #define BOOST_LOCALE_DEFINE_ID(CLASS) template struct detail::facet_id<CLASS> |
| 23 | |
| 24 | BOOST_LOCALE_DEFINE_ID(info); |
| 25 | BOOST_LOCALE_DEFINE_ID(calendar_facet); |
| 26 | |
| 27 | #define BOOST_LOCALE_INSTANTIATE(CHARTYPE) \ |
| 28 | BOOST_LOCALE_DEFINE_ID(collator<CHARTYPE>); \ |
| 29 | BOOST_LOCALE_DEFINE_ID(converter<CHARTYPE>); \ |
| 30 | BOOST_LOCALE_DEFINE_ID(message_format<CHARTYPE>); \ |
| 31 | BOOST_LOCALE_DEFINE_ID(boundary::boundary_indexing<CHARTYPE>); |
| 32 | |
| 33 | BOOST_LOCALE_FOREACH_CHAR(BOOST_LOCALE_INSTANTIATE) |
| 34 | #undef BOOST_LOCALE_INSTANTIATE |
| 35 | |
| 36 | namespace { |
| 37 | // Initialize each facet once to avoid issues where doing so |
| 38 | // in a multi threaded environment could cause problems (races) |
| 39 | struct init_all { |
| 40 | init_all() |
| 41 | { |
| 42 | const std::locale& l = std::locale::classic(); |
| 43 | #define BOOST_LOCALE_INIT_BY(CHAR) init_by<CHAR>(l); |
| 44 | BOOST_LOCALE_FOREACH_CHAR(BOOST_LOCALE_INIT_BY) |
| 45 | |
| 46 | init_facet<info>(l); |
| 47 | init_facet<calendar_facet>(l); |
| 48 | } |
| 49 | template<typename Char> |
| 50 | void init_by(const std::locale& l) |
| 51 | { |
| 52 | init_facet<boundary::boundary_indexing<Char>>(l); |
| 53 | init_facet<collator<Char>>(l); |
| 54 | init_facet<converter<Char>>(l); |
| 55 | init_facet<message_format<Char>>(l); |
| 56 | } |
| 57 | template<typename Facet> |
| 58 | void init_facet(const std::locale& l) |
| 59 | { |
| 60 | // Use the facet to initialize e.g. their std::locale::id |
| 61 | ignore_unused(std::has_facet<Facet>(l)); |
| 62 | } |
| 63 | } facet_initializer; |
| 64 | } // namespace |
| 65 | |
| 66 | }} // namespace boost::locale |
| 67 |