1 | // Copyright Kevlin Henney, 2000-2005. |
2 | // Copyright Alexander Nasonov, 2006-2010. |
3 | // Copyright Antony Polukhin, 2011-2020. |
4 | // |
5 | // Distributed under the Boost Software License, Version 1.0. (See |
6 | // accompanying file LICENSE_1_0.txt or copy at |
7 | // http://www.boost.org/LICENSE_1_0.txt) |
8 | // |
9 | // what: lexical_cast custom keyword cast |
10 | // who: contributed by Kevlin Henney, |
11 | // enhanced with contributions from Terje Slettebo, |
12 | // with additional fixes and suggestions from Gennaro Prota, |
13 | // Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov, |
14 | // Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann, |
15 | // Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters |
16 | // when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014 |
17 | |
18 | #ifndef BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP |
19 | #define BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP |
20 | |
21 | #include <boost/config.hpp> |
22 | #ifdef BOOST_HAS_PRAGMA_ONCE |
23 | # pragma once |
24 | #endif |
25 | |
26 | namespace boost |
27 | { |
28 | namespace detail // '0', '-', '+', 'e', 'E' and '.' constants |
29 | { |
30 | template < typename Char > |
31 | struct lcast_char_constants { |
32 | // We check in tests assumption that static casted character is |
33 | // equal to correctly written C++ literal: U'0' == static_cast<char32_t>('0') |
34 | BOOST_STATIC_CONSTANT(Char, zero = static_cast<Char>('0')); |
35 | BOOST_STATIC_CONSTANT(Char, minus = static_cast<Char>('-')); |
36 | BOOST_STATIC_CONSTANT(Char, plus = static_cast<Char>('+')); |
37 | BOOST_STATIC_CONSTANT(Char, lowercase_e = static_cast<Char>('e')); |
38 | BOOST_STATIC_CONSTANT(Char, capital_e = static_cast<Char>('E')); |
39 | BOOST_STATIC_CONSTANT(Char, c_decimal_separator = static_cast<Char>('.')); |
40 | }; |
41 | } |
42 | } // namespace boost |
43 | |
44 | |
45 | #endif // BOOST_LEXICAL_CAST_DETAIL_LCAST_CHAR_CONSTANTS_HPP |
46 | |
47 | |