6 * Use, modification and distribution are subject to the
7 * Boost Software License, Version 1.0. (See accompanying file
8 * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
13 * LOCATION: see http://www.boost.org for most recent version.
14 * FILE regex_traits_defaults.hpp
15 * VERSION see <boost/version.hpp>
16 * DESCRIPTION: Declares API's for access to regex_traits default properties.
19 #ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
20 #define BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
24 #pragma warning(disable: 4103)
26 #ifdef BOOST_HAS_ABI_HEADERS
27 # include BOOST_ABI_PREFIX
33 #include <boost/regex/config.hpp>
35 #ifndef BOOST_REGEX_SYNTAX_TYPE_HPP
36 #include <boost/regex/v4/syntax_type.hpp>
38 #ifndef BOOST_REGEX_ERROR_TYPE_HPP
39 #include <boost/regex/v4/error_type.hpp>
41 #include <boost/type_traits/make_unsigned.hpp>
43 #ifdef BOOST_NO_STDC_NAMESPACE
49 namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
53 // helpers to suppress warnings:
55 template <class charT>
56 inline bool is_extended(charT c)
58 typedef typename make_unsigned<charT>::type unsigned_type;
59 return (sizeof(charT) > 1) && (static_cast<unsigned_type>(c) >= 256u);
61 inline bool is_extended(char)
65 BOOST_REGEX_DECL const char* BOOST_REGEX_CALL get_default_syntax(regex_constants::syntax_type n);
66 BOOST_REGEX_DECL const char* BOOST_REGEX_CALL get_default_error_string(regex_constants::error_type n);
67 BOOST_REGEX_DECL regex_constants::syntax_type BOOST_REGEX_CALL get_default_syntax_type(char c);
68 BOOST_REGEX_DECL regex_constants::escape_syntax_type BOOST_REGEX_CALL get_default_escape_syntax_type(char c);
70 // is charT c a combining character?
71 BOOST_REGEX_DECL bool BOOST_REGEX_CALL is_combining_implementation(uint_least16_t s);
73 template <class charT>
74 inline bool is_combining(charT c)
76 return (c <= static_cast<charT>(0)) ? false : ((c >= static_cast<charT>((std::numeric_limits<uint_least16_t>::max)())) ? false : is_combining_implementation(static_cast<unsigned short>(c)));
79 inline bool is_combining<char>(char)
84 inline bool is_combining<signed char>(signed char)
89 inline bool is_combining<unsigned char>(unsigned char)
93 #if !defined(__hpux) && !defined(__WINSCW__) // can't use WCHAR_MAX/MIN in pp-directives
96 inline bool is_combining<wchar_t>(wchar_t c)
98 return is_combining_implementation(static_cast<unsigned short>(c));
100 #elif !defined(__DECCXX) && !defined(__osf__) && !defined(__OSF__) && defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
101 #if defined(WCHAR_MAX) && (WCHAR_MAX <= USHRT_MAX)
103 inline bool is_combining<wchar_t>(wchar_t c)
105 return is_combining_implementation(static_cast<unsigned short>(c));
109 inline bool is_combining<wchar_t>(wchar_t c)
111 return (c >= (std::numeric_limits<uint_least16_t>::max)()) ? false : is_combining_implementation(static_cast<unsigned short>(c));
118 // is a charT c a line separator?
120 template <class charT>
121 inline bool is_separator(charT c)
123 return BOOST_REGEX_MAKE_BOOL(
124 (c == static_cast<charT>('\n'))
125 || (c == static_cast<charT>('\r'))
126 || (c == static_cast<charT>('\f'))
127 || (static_cast<boost::uint16_t>(c) == 0x2028u)
128 || (static_cast<boost::uint16_t>(c) == 0x2029u)
129 || (static_cast<boost::uint16_t>(c) == 0x85u));
132 inline bool is_separator<char>(char c)
134 return BOOST_REGEX_MAKE_BOOL((c == '\n') || (c == '\r') || (c == '\f'));
138 // get a default collating element:
140 BOOST_REGEX_DECL std::string BOOST_REGEX_CALL lookup_default_collate_name(const std::string& name);
143 // get the state_id of a character clasification, the individual
144 // traits classes then transform that state_id into a bitmask:
146 template <class charT>
147 struct character_pointer_range
152 bool operator < (const character_pointer_range& r)const
154 return std::lexicographical_compare(p1, p2, r.p1, r.p2);
156 bool operator == (const character_pointer_range& r)const
158 // Not only do we check that the ranges are of equal size before
159 // calling std::equal, but there is no other algorithm available:
160 // not even a non-standard MS one. So forward to unchecked_equal
162 return ((p2 - p1) == (r.p2 - r.p1)) && BOOST_REGEX_DETAIL_NS::equal(p1, p2, r.p1);
165 template <class charT>
166 int get_default_class_id(const charT* p1, const charT* p2)
168 static const charT data[73] = {
169 'a', 'l', 'n', 'u', 'm',
170 'a', 'l', 'p', 'h', 'a',
171 'b', 'l', 'a', 'n', 'k',
172 'c', 'n', 't', 'r', 'l',
173 'd', 'i', 'g', 'i', 't',
174 'g', 'r', 'a', 'p', 'h',
175 'l', 'o', 'w', 'e', 'r',
176 'p', 'r', 'i', 'n', 't',
177 'p', 'u', 'n', 'c', 't',
178 's', 'p', 'a', 'c', 'e',
179 'u', 'n', 'i', 'c', 'o', 'd', 'e',
180 'u', 'p', 'p', 'e', 'r',
183 'x', 'd', 'i', 'g', 'i', 't',
186 static const character_pointer_range<charT> ranges[21] =
188 {data+0, data+5,}, // alnum
189 {data+5, data+10,}, // alpha
190 {data+10, data+15,}, // blank
191 {data+15, data+20,}, // cntrl
192 {data+20, data+21,}, // d
193 {data+20, data+25,}, // digit
194 {data+25, data+30,}, // graph
195 {data+29, data+30,}, // h
196 {data+30, data+31,}, // l
197 {data+30, data+35,}, // lower
198 {data+35, data+40,}, // print
199 {data+40, data+45,}, // punct
200 {data+45, data+46,}, // s
201 {data+45, data+50,}, // space
202 {data+57, data+58,}, // u
203 {data+50, data+57,}, // unicode
204 {data+57, data+62,}, // upper
205 {data+62, data+63,}, // v
206 {data+63, data+64,}, // w
207 {data+63, data+67,}, // word
208 {data+67, data+73,}, // xdigit
210 static const character_pointer_range<charT>* ranges_begin = ranges;
211 static const character_pointer_range<charT>* ranges_end = ranges + (sizeof(ranges)/sizeof(ranges[0]));
213 character_pointer_range<charT> t = { p1, p2, };
214 const character_pointer_range<charT>* p = std::lower_bound(ranges_begin, ranges_end, t);
215 if((p != ranges_end) && (t == *p))
216 return static_cast<int>(p - ranges);
223 template <class charT>
224 std::ptrdiff_t global_length(const charT* p)
226 std::ptrdiff_t n = 0;
235 inline std::ptrdiff_t global_length<char>(const char* p)
237 return (std::strlen)(p);
239 #ifndef BOOST_NO_WREGEX
241 inline std::ptrdiff_t global_length<wchar_t>(const wchar_t* p)
243 return (std::wcslen)(p);
246 template <class charT>
247 inline charT BOOST_REGEX_CALL global_lower(charT c)
251 template <class charT>
252 inline charT BOOST_REGEX_CALL global_upper(charT c)
257 BOOST_REGEX_DECL char BOOST_REGEX_CALL do_global_lower(char c);
258 BOOST_REGEX_DECL char BOOST_REGEX_CALL do_global_upper(char c);
259 #ifndef BOOST_NO_WREGEX
260 BOOST_REGEX_DECL wchar_t BOOST_REGEX_CALL do_global_lower(wchar_t c);
261 BOOST_REGEX_DECL wchar_t BOOST_REGEX_CALL do_global_upper(wchar_t c);
263 #ifdef BOOST_REGEX_HAS_OTHER_WCHAR_T
264 BOOST_REGEX_DECL unsigned short BOOST_REGEX_CALL do_global_lower(unsigned short c);
265 BOOST_REGEX_DECL unsigned short BOOST_REGEX_CALL do_global_upper(unsigned short c);
268 // This sucks: declare template specialisations of global_lower/global_upper
269 // that just forward to the non-template implementation functions. We do
270 // this because there is one compiler (Compaq Tru64 C++) that doesn't seem
271 // to differentiate between templates and non-template overloads....
272 // what's more, the primary template, plus all overloads have to be
273 // defined in the same translation unit (if one is inline they all must be)
274 // otherwise the "local template instantiation" compiler option can pick
275 // the wrong instantiation when linking:
277 template<> inline char BOOST_REGEX_CALL global_lower<char>(char c){ return do_global_lower(c); }
278 template<> inline char BOOST_REGEX_CALL global_upper<char>(char c){ return do_global_upper(c); }
279 #ifndef BOOST_NO_WREGEX
280 template<> inline wchar_t BOOST_REGEX_CALL global_lower<wchar_t>(wchar_t c){ return do_global_lower(c); }
281 template<> inline wchar_t BOOST_REGEX_CALL global_upper<wchar_t>(wchar_t c){ return do_global_upper(c); }
283 #ifdef BOOST_REGEX_HAS_OTHER_WCHAR_T
284 template<> inline unsigned short BOOST_REGEX_CALL global_lower<unsigned short>(unsigned short c){ return do_global_lower(c); }
285 template<> inline unsigned short BOOST_REGEX_CALL global_upper<unsigned short>(unsigned short c){ return do_global_upper(c); }
288 template <class charT>
289 int global_value(charT c)
291 static const charT zero = '0';
292 static const charT nine = '9';
293 static const charT a = 'a';
294 static const charT f = 'f';
295 static const charT A = 'A';
296 static const charT F = 'F';
299 if(c >= a) return 10 + (c - a);
301 if(c >= A) return 10 + (c - A);
302 if(c > nine) return -1;
303 if(c >= zero) return c - zero;
306 template <class charT, class traits>
307 boost::intmax_t global_toi(const charT*& p1, const charT* p2, int radix, const traits& t)
309 (void)t; // warning suppression
310 boost::intmax_t next_value = t.value(*p1, radix);
311 if((p1 == p2) || (next_value < 0) || (next_value >= radix))
313 boost::intmax_t result = 0;
316 next_value = t.value(*p1, radix);
317 if((next_value < 0) || (next_value >= radix))
320 result += next_value;
326 template <class charT>
327 inline const charT* get_escape_R_string()
330 # pragma warning(push)
331 # pragma warning(disable:4309 4245)
333 static const charT e1[] = { '(', '?', '>', '\x0D', '\x0A', '?',
334 '|', '[', '\x0A', '\x0B', '\x0C', static_cast<unsigned char>('\x85'), '\\', 'x', '{', '2', '0', '2', '8', '}',
335 '\\', 'x', '{', '2', '0', '2', '9', '}', ']', ')', '\0' };
336 static const charT e2[] = { '(', '?', '>', '\x0D', '\x0A', '?',
337 '|', '[', '\x0A', '\x0B', '\x0C', static_cast<unsigned char>('\x85'), ']', ')', '\0' };
339 charT c = static_cast<charT>(0x2029u);
340 bool b = (static_cast<unsigned>(c) == 0x2029u);
342 return (b ? e1 : e2);
344 # pragma warning(pop)
349 inline const char* get_escape_R_string<char>()
352 # pragma warning(push)
353 # pragma warning(disable:4309)
355 static const char e2[] = { '(', '?', '>', '\x0D', '\x0A', '?',
356 '|', '[', '\x0A', '\x0B', '\x0C', '\x85', ']', ')', '\0' };
359 # pragma warning(pop)
363 } // BOOST_REGEX_DETAIL_NS
367 #pragma warning(push)
368 #pragma warning(disable: 4103)
370 #ifdef BOOST_HAS_ABI_HEADERS
371 # include BOOST_ABI_SUFFIX