| 1 | // |
| 2 | // Copyright (c) 2009-2011 Artyom Beilis (Tonkikh) |
| 3 | // Copyright (c) 2021-2023 Alexander Grund |
| 4 | // |
| 5 | // Distributed under the Boost Software License, Version 1.0. |
| 6 | // https://www.boost.org/LICENSE_1_0.txt |
| 7 | |
| 8 | #ifndef BOOST_SRC_LOCALE_MO_LAMBDA_HPP_INCLUDED |
| 9 | #define BOOST_SRC_LOCALE_MO_LAMBDA_HPP_INCLUDED |
| 10 | |
| 11 | #include <boost/locale/config.hpp> |
| 12 | #include <memory> |
| 13 | |
| 14 | namespace boost { namespace locale { namespace gnu_gettext { namespace lambda { |
| 15 | |
| 16 | struct BOOST_SYMBOL_VISIBLE expr { |
| 17 | using value_type = long long; |
| 18 | virtual value_type operator()(value_type n) const = 0; |
| 19 | virtual ~expr() = default; |
| 20 | }; |
| 21 | using expr_ptr = std::unique_ptr<expr>; |
| 22 | |
| 23 | class plural_expr { |
| 24 | expr_ptr p_; |
| 25 | |
| 26 | public: |
| 27 | plural_expr() = default; |
| 28 | explicit plural_expr(expr_ptr p) : p_(std::move(p)) {} |
| 29 | expr::value_type operator()(expr::value_type n) const { return (*p_)(n); } |
| 30 | explicit operator bool() const { return static_cast<bool>(p_); } |
| 31 | }; |
| 32 | |
| 33 | BOOST_LOCALE_DECL plural_expr compile(const char* c_expression); |
| 34 | |
| 35 | }}}} // namespace boost::locale::gnu_gettext::lambda |
| 36 | |
| 37 | #endif |
| 38 | |