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1 | // Boost.Range library |
2 | // | |
3 | // Copyright Thorsten Ottosen 2006. Use, modification and | |
4 | // distribution is subject to the Boost Software License, Version | |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // For more information, see http://www.boost.org/libs/range/ | |
9 | // | |
10 | ||
11 | #ifndef BOOST_RANGE_AS_LITERAL_HPP | |
12 | #define BOOST_RANGE_AS_LITERAL_HPP | |
13 | ||
14 | #if defined(_MSC_VER) | |
15 | # pragma once | |
16 | #endif | |
17 | ||
18 | #ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING | |
19 | #include <boost/range/detail/as_literal.hpp> | |
20 | #else | |
21 | ||
22 | #include <boost/range/iterator_range.hpp> | |
23 | #include <boost/range/detail/str_types.hpp> | |
24 | ||
25 | #include <boost/detail/workaround.hpp> | |
26 | ||
27 | #include <cstring> | |
92f5a8d4 TL |
28 | |
29 | #if !defined(BOOST_NO_CXX11_CHAR16_T) || !defined(BOOST_NO_CXX11_CHAR32_T) | |
30 | #include <string> // for std::char_traits | |
31 | #endif | |
32 | ||
7c673cae FG |
33 | #ifndef BOOST_NO_CWCHAR |
34 | #include <cwchar> | |
35 | #endif | |
36 | ||
37 | namespace boost | |
38 | { | |
39 | namespace range_detail | |
40 | { | |
41 | inline std::size_t length( const char* s ) | |
42 | { | |
43 | return strlen( s ); | |
44 | } | |
45 | ||
92f5a8d4 TL |
46 | #ifndef BOOST_NO_CXX11_CHAR16_T |
47 | inline std::size_t length( const char16_t* s ) | |
48 | { | |
49 | return std::char_traits<char16_t>::length( s ); | |
50 | } | |
51 | #endif | |
52 | ||
53 | #ifndef BOOST_NO_CXX11_CHAR32_T | |
54 | inline std::size_t length( const char32_t* s ) | |
55 | { | |
56 | return std::char_traits<char32_t>::length( s ); | |
57 | } | |
58 | #endif | |
59 | ||
7c673cae FG |
60 | #ifndef BOOST_NO_CWCHAR |
61 | inline std::size_t length( const wchar_t* s ) | |
62 | { | |
63 | return wcslen( s ); | |
64 | } | |
65 | #endif | |
66 | ||
67 | // | |
68 | // Remark: the compiler cannot choose between T* and T[sz] | |
69 | // overloads, so we must put the T* internal to the | |
70 | // unconstrained version. | |
71 | // | |
72 | ||
73 | inline bool is_char_ptr( char* ) | |
74 | { | |
75 | return true; | |
76 | } | |
77 | ||
78 | inline bool is_char_ptr( const char* ) | |
79 | { | |
80 | return true; | |
81 | } | |
82 | ||
92f5a8d4 TL |
83 | #ifndef BOOST_NO_CXX11_CHAR16_T |
84 | inline bool is_char_ptr( char16_t* ) | |
85 | { | |
86 | return true; | |
87 | } | |
88 | ||
89 | inline bool is_char_ptr( const char16_t* ) | |
90 | { | |
91 | return true; | |
92 | } | |
93 | #endif | |
94 | ||
95 | #ifndef BOOST_NO_CXX11_CHAR32_T | |
96 | inline bool is_char_ptr( char32_t* ) | |
97 | { | |
98 | return true; | |
99 | } | |
100 | ||
101 | inline bool is_char_ptr( const char32_t* ) | |
102 | { | |
103 | return true; | |
104 | } | |
105 | #endif | |
106 | ||
7c673cae FG |
107 | #ifndef BOOST_NO_CWCHAR |
108 | inline bool is_char_ptr( wchar_t* ) | |
109 | { | |
110 | return true; | |
111 | } | |
112 | ||
113 | inline bool is_char_ptr( const wchar_t* ) | |
114 | { | |
115 | return true; | |
116 | } | |
117 | #endif | |
118 | ||
119 | template< class T > | |
120 | inline long is_char_ptr( const T& /* r */ ) | |
121 | { | |
122 | return 0L; | |
123 | } | |
124 | ||
125 | template< class T > | |
126 | inline iterator_range<T*> | |
127 | make_range( T* const r, bool ) | |
128 | { | |
129 | return iterator_range<T*>( r, r + length(r) ); | |
130 | } | |
131 | ||
132 | template< class T > | |
133 | inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<T>::type> | |
134 | make_range( T& r, long ) | |
135 | { | |
136 | return boost::make_iterator_range( r ); | |
137 | } | |
138 | ||
139 | } | |
140 | ||
141 | template< class Range > | |
142 | inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<Range>::type> | |
143 | as_literal( Range& r ) | |
144 | { | |
145 | return range_detail::make_range( r, range_detail::is_char_ptr(r) ); | |
146 | } | |
147 | ||
148 | template< class Range > | |
149 | inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type> | |
150 | as_literal( const Range& r ) | |
151 | { | |
152 | return range_detail::make_range( r, range_detail::is_char_ptr(r) ); | |
153 | } | |
154 | ||
155 | template< class Char, std::size_t sz > | |
156 | inline iterator_range<Char*> as_literal( Char (&arr)[sz] ) | |
157 | { | |
158 | return range_detail::make_range( arr, range_detail::is_char_ptr(arr) ); | |
159 | } | |
160 | ||
161 | template< class Char, std::size_t sz > | |
162 | inline iterator_range<const Char*> as_literal( const Char (&arr)[sz] ) | |
163 | { | |
164 | return range_detail::make_range( arr, range_detail::is_char_ptr(arr) ); | |
165 | } | |
166 | } | |
167 | ||
168 | #endif // BOOST_NO_FUNCTION_TEMPLATE_ORDERING | |
169 | ||
170 | #endif |