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1 | // Copyright Kevlin Henney, 2000-2005. |
2 | // Copyright Alexander Nasonov, 2006-2010. | |
3 | // Copyright Antony Polukhin, 2011-2014. | |
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_INCLUDED | |
19 | #define BOOST_LEXICAL_CAST_INCLUDED | |
20 | ||
21 | #include <boost/config.hpp> | |
22 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
23 | # pragma once | |
24 | #endif | |
25 | ||
26 | #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING) | |
27 | #define BOOST_LCAST_NO_WCHAR_T | |
28 | #endif | |
29 | ||
30 | #include <boost/range/iterator_range_core.hpp> | |
31 | #include <boost/lexical_cast/bad_lexical_cast.hpp> | |
32 | #include <boost/lexical_cast/try_lexical_convert.hpp> | |
33 | ||
34 | namespace boost | |
35 | { | |
36 | template <typename Target, typename Source> | |
37 | inline Target lexical_cast(const Source &arg) | |
38 | { | |
39 | Target result = Target(); | |
40 | ||
41 | if (!boost::conversion::detail::try_lexical_convert(arg, result)) { | |
42 | boost::conversion::detail::throw_bad_cast<Source, Target>(); | |
43 | } | |
44 | ||
45 | return result; | |
46 | } | |
47 | ||
48 | template <typename Target> | |
49 | inline Target lexical_cast(const char* chars, std::size_t count) | |
50 | { | |
51 | return ::boost::lexical_cast<Target>( | |
52 | ::boost::iterator_range<const char*>(chars, chars + count) | |
53 | ); | |
54 | } | |
55 | ||
56 | template <typename Target> | |
57 | inline Target lexical_cast(const unsigned char* chars, std::size_t count) | |
58 | { | |
59 | return ::boost::lexical_cast<Target>( | |
60 | ::boost::iterator_range<const unsigned char*>(chars, chars + count) | |
61 | ); | |
62 | } | |
63 | ||
64 | template <typename Target> | |
65 | inline Target lexical_cast(const signed char* chars, std::size_t count) | |
66 | { | |
67 | return ::boost::lexical_cast<Target>( | |
68 | ::boost::iterator_range<const signed char*>(chars, chars + count) | |
69 | ); | |
70 | } | |
71 | ||
72 | #ifndef BOOST_LCAST_NO_WCHAR_T | |
73 | template <typename Target> | |
74 | inline Target lexical_cast(const wchar_t* chars, std::size_t count) | |
75 | { | |
76 | return ::boost::lexical_cast<Target>( | |
77 | ::boost::iterator_range<const wchar_t*>(chars, chars + count) | |
78 | ); | |
79 | } | |
80 | #endif | |
81 | #ifndef BOOST_NO_CXX11_CHAR16_T | |
82 | template <typename Target> | |
83 | inline Target lexical_cast(const char16_t* chars, std::size_t count) | |
84 | { | |
85 | return ::boost::lexical_cast<Target>( | |
86 | ::boost::iterator_range<const char16_t*>(chars, chars + count) | |
87 | ); | |
88 | } | |
89 | #endif | |
90 | #ifndef BOOST_NO_CXX11_CHAR32_T | |
91 | template <typename Target> | |
92 | inline Target lexical_cast(const char32_t* chars, std::size_t count) | |
93 | { | |
94 | return ::boost::lexical_cast<Target>( | |
95 | ::boost::iterator_range<const char32_t*>(chars, chars + count) | |
96 | ); | |
97 | } | |
98 | #endif | |
99 | ||
100 | } // namespace boost | |
101 | ||
102 | #undef BOOST_LCAST_NO_WCHAR_T | |
103 | ||
104 | #endif // BOOST_LEXICAL_CAST_INCLUDED | |
105 |