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regex_traits_defaults.hpp
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/*
*
* Copyright (c) 2004
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE regex_traits_defaults.hpp
* VERSION see <boost/version.hpp>
* DESCRIPTION: Declares API's for access to regex_traits default properties.
*/
#ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
#define BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
#include <boost/regex/config.hpp>
#include <boost/regex/v5/syntax_type.hpp>
#include <boost/regex/v5/error_type.hpp>
#include <boost/regex/v5/regex_workaround.hpp>
#include <type_traits>
#include <cstdint>
#include <cctype>
#include <locale>
#include <cwctype>
#include <limits>
namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
//
// helpers to suppress warnings:
//
template <class charT>
inline bool is_extended(charT c)
{
typedef typename std::make_unsigned<charT>::type unsigned_type;
return (sizeof(charT) > 1) && (static_cast<unsigned_type>(c) >= 256u);
}
inline bool is_extended(char)
{ return false; }
inline const char* get_default_syntax(regex_constants::syntax_type n)
{
// if the user hasn't supplied a message catalog, then this supplies
// default "messages" for us to load in the range 1-100.
const char* messages[] = {
"",
"(",
")",
"$",
"^",
".",
"*",
"+",
"?",
"[",
"]",
"|",
"\\",
"#",
"-",
"{",
"}",
"0123456789",
"b",
"B",
"<",
">",
"",
"",
"A`",
"z'",
"\n",
",",
"a",
"f",
"n",
"r",
"t",
"v",
"x",
"c",
":",
"=",
"e",
"",
"",
"",
"",
"",
"",
"",
"",
"E",
"Q",
"X",
"C",
"Z",
"G",
"!",
"p",
"P",
"N",
"gk",
"K",
"R",
};
return ((n >= (sizeof(messages) / sizeof(messages[1]))) ? "" : messages[n]);
}
inline const char* get_default_error_string(regex_constants::error_type n)
{
static const char* const s_default_error_messages[] = {
"Success", /* REG_NOERROR 0 error_ok */
"No match", /* REG_NOMATCH 1 error_no_match */
"Invalid regular expression.", /* REG_BADPAT 2 error_bad_pattern */
"Invalid collation character.", /* REG_ECOLLATE 3 error_collate */
"Invalid character class name, collating name, or character range.", /* REG_ECTYPE 4 error_ctype */
"Invalid or unterminated escape sequence.", /* REG_EESCAPE 5 error_escape */
"Invalid back reference: specified capturing group does not exist.", /* REG_ESUBREG 6 error_backref */
"Unmatched [ or [^ in character class declaration.", /* REG_EBRACK 7 error_brack */
"Unmatched marking parenthesis ( or \\(.", /* REG_EPAREN 8 error_paren */
"Unmatched quantified repeat operator { or \\{.", /* REG_EBRACE 9 error_brace */
"Invalid content of repeat range.", /* REG_BADBR 10 error_badbrace */
"Invalid range end in character class", /* REG_ERANGE 11 error_range */
"Out of memory.", /* REG_ESPACE 12 error_space NOT USED */
"Invalid preceding regular expression prior to repetition operator.", /* REG_BADRPT 13 error_badrepeat */
"Premature end of regular expression", /* REG_EEND 14 error_end NOT USED */
"Regular expression is too large.", /* REG_ESIZE 15 error_size NOT USED */
"Unmatched ) or \\)", /* REG_ERPAREN 16 error_right_paren NOT USED */
"Empty regular expression.", /* REG_EMPTY 17 error_empty */
"The complexity of matching the regular expression exceeded predefined bounds. "
"Try refactoring the regular expression to make each choice made by the state machine unambiguous. "
"This exception is thrown to prevent \"eternal\" matches that take an "
"indefinite period time to locate.", /* REG_ECOMPLEXITY 18 error_complexity */
"Ran out of stack space trying to match the regular expression.", /* REG_ESTACK 19 error_stack */
"Invalid or unterminated Perl (?...) sequence.", /* REG_E_PERL 20 error_perl */
"Unknown error.", /* REG_E_UNKNOWN 21 error_unknown */
};
return (n > ::boost::regex_constants::error_unknown) ? s_default_error_messages[::boost::regex_constants::error_unknown] : s_default_error_messages[n];
}
inline regex_constants::syntax_type get_default_syntax_type(char c)
{
//
// char_syntax determines how the compiler treats a given character
// in a regular expression.
//
static regex_constants::syntax_type char_syntax[] = {
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_newline, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /* */ // 32
regex_constants::syntax_not, /*!*/
regex_constants::syntax_char, /*"*/
regex_constants::syntax_hash, /*#*/
regex_constants::syntax_dollar, /*$*/
regex_constants::syntax_char, /*%*/
regex_constants::syntax_char, /*&*/
regex_constants::escape_type_end_buffer, /*'*/
regex_constants::syntax_open_mark, /*(*/
regex_constants::syntax_close_mark, /*)*/
regex_constants::syntax_star, /***/
regex_constants::syntax_plus, /*+*/
regex_constants::syntax_comma, /*,*/
regex_constants::syntax_dash, /*-*/
regex_constants::syntax_dot, /*.*/
regex_constants::syntax_char, /*/*/
regex_constants::syntax_digit, /*0*/
regex_constants::syntax_digit, /*1*/
regex_constants::syntax_digit, /*2*/
regex_constants::syntax_digit, /*3*/
regex_constants::syntax_digit, /*4*/
regex_constants::syntax_digit, /*5*/
regex_constants::syntax_digit, /*6*/
regex_constants::syntax_digit, /*7*/
regex_constants::syntax_digit, /*8*/
regex_constants::syntax_digit, /*9*/
regex_constants::syntax_colon, /*:*/
regex_constants::syntax_char, /*;*/
regex_constants::escape_type_left_word, /*<*/
regex_constants::syntax_equal, /*=*/
regex_constants::escape_type_right_word, /*>*/
regex_constants::syntax_question, /*?*/
regex_constants::syntax_char, /*@*/
regex_constants::syntax_char, /*A*/
regex_constants::syntax_char, /*B*/
regex_constants::syntax_char, /*C*/
regex_constants::syntax_char, /*D*/
regex_constants::syntax_char, /*E*/
regex_constants::syntax_char, /*F*/
regex_constants::syntax_char, /*G*/
regex_constants::syntax_char, /*H*/
regex_constants::syntax_char, /*I*/
regex_constants::syntax_char, /*J*/
regex_constants::syntax_char, /*K*/
regex_constants::syntax_char, /*L*/
regex_constants::syntax_char, /*M*/
regex_constants::syntax_char, /*N*/
regex_constants::syntax_char, /*O*/
regex_constants::syntax_char, /*P*/
regex_constants::syntax_char, /*Q*/
regex_constants::syntax_char, /*R*/
regex_constants::syntax_char, /*S*/
regex_constants::syntax_char, /*T*/
regex_constants::syntax_char, /*U*/
regex_constants::syntax_char, /*V*/
regex_constants::syntax_char, /*W*/
regex_constants::syntax_char, /*X*/
regex_constants::syntax_char, /*Y*/
regex_constants::syntax_char, /*Z*/
regex_constants::syntax_open_set, /*[*/
regex_constants::syntax_escape, /*\*/
regex_constants::syntax_close_set, /*]*/
regex_constants::syntax_caret, /*^*/
regex_constants::syntax_char, /*_*/
regex_constants::syntax_char, /*`*/
regex_constants::syntax_char, /*a*/
regex_constants::syntax_char, /*b*/
regex_constants::syntax_char, /*c*/
regex_constants::syntax_char, /*d*/
regex_constants::syntax_char, /*e*/
regex_constants::syntax_char, /*f*/
regex_constants::syntax_char, /*g*/
regex_constants::syntax_char, /*h*/
regex_constants::syntax_char, /*i*/
regex_constants::syntax_char, /*j*/
regex_constants::syntax_char, /*k*/
regex_constants::syntax_char, /*l*/
regex_constants::syntax_char, /*m*/
regex_constants::syntax_char, /*n*/
regex_constants::syntax_char, /*o*/
regex_constants::syntax_char, /*p*/
regex_constants::syntax_char, /*q*/
regex_constants::syntax_char, /*r*/
regex_constants::syntax_char, /*s*/
regex_constants::syntax_char, /*t*/
regex_constants::syntax_char, /*u*/
regex_constants::syntax_char, /*v*/
regex_constants::syntax_char, /*w*/
regex_constants::syntax_char, /*x*/
regex_constants::syntax_char, /*y*/
regex_constants::syntax_char, /*z*/
regex_constants::syntax_open_brace, /*{*/
regex_constants::syntax_or, /*|*/
regex_constants::syntax_close_brace, /*}*/
regex_constants::syntax_char, /*~*/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
regex_constants::syntax_char, /**/
};
return char_syntax[(unsigned char)c];
}
inline regex_constants::escape_syntax_type get_default_escape_syntax_type(char c)
{
//
// char_syntax determines how the compiler treats a given character
// in a regular expression.
//
static regex_constants::escape_syntax_type char_syntax[] = {
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /* */ // 32
regex_constants::escape_type_identity, /*!*/
regex_constants::escape_type_identity, /*"*/
regex_constants::escape_type_identity, /*#*/
regex_constants::escape_type_identity, /*$*/
regex_constants::escape_type_identity, /*%*/
regex_constants::escape_type_identity, /*&*/
regex_constants::escape_type_end_buffer, /*'*/
regex_constants::syntax_open_mark, /*(*/
regex_constants::syntax_close_mark, /*)*/
regex_constants::escape_type_identity, /***/
regex_constants::syntax_plus, /*+*/
regex_constants::escape_type_identity, /*,*/
regex_constants::escape_type_identity, /*-*/
regex_constants::escape_type_identity, /*.*/
regex_constants::escape_type_identity, /*/*/
regex_constants::escape_type_decimal, /*0*/
regex_constants::escape_type_backref, /*1*/
regex_constants::escape_type_backref, /*2*/
regex_constants::escape_type_backref, /*3*/
regex_constants::escape_type_backref, /*4*/
regex_constants::escape_type_backref, /*5*/
regex_constants::escape_type_backref, /*6*/
regex_constants::escape_type_backref, /*7*/
regex_constants::escape_type_backref, /*8*/
regex_constants::escape_type_backref, /*9*/
regex_constants::escape_type_identity, /*:*/
regex_constants::escape_type_identity, /*;*/
regex_constants::escape_type_left_word, /*<*/
regex_constants::escape_type_identity, /*=*/
regex_constants::escape_type_right_word, /*>*/
regex_constants::syntax_question, /*?*/
regex_constants::escape_type_identity, /*@*/
regex_constants::escape_type_start_buffer, /*A*/
regex_constants::escape_type_not_word_assert, /*B*/
regex_constants::escape_type_C, /*C*/
regex_constants::escape_type_not_class, /*D*/
regex_constants::escape_type_E, /*E*/
regex_constants::escape_type_not_class, /*F*/
regex_constants::escape_type_G, /*G*/
regex_constants::escape_type_not_class, /*H*/
regex_constants::escape_type_not_class, /*I*/
regex_constants::escape_type_not_class, /*J*/
regex_constants::escape_type_reset_start_mark, /*K*/
regex_constants::escape_type_not_class, /*L*/
regex_constants::escape_type_not_class, /*M*/
regex_constants::escape_type_named_char, /*N*/
regex_constants::escape_type_not_class, /*O*/
regex_constants::escape_type_not_property, /*P*/
regex_constants::escape_type_Q, /*Q*/
regex_constants::escape_type_line_ending, /*R*/
regex_constants::escape_type_not_class, /*S*/
regex_constants::escape_type_not_class, /*T*/
regex_constants::escape_type_not_class, /*U*/
regex_constants::escape_type_not_class, /*V*/
regex_constants::escape_type_not_class, /*W*/
regex_constants::escape_type_X, /*X*/
regex_constants::escape_type_not_class, /*Y*/
regex_constants::escape_type_Z, /*Z*/
regex_constants::escape_type_identity, /*[*/
regex_constants::escape_type_identity, /*\*/
regex_constants::escape_type_identity, /*]*/
regex_constants::escape_type_identity, /*^*/
regex_constants::escape_type_identity, /*_*/
regex_constants::escape_type_start_buffer, /*`*/
regex_constants::escape_type_control_a, /*a*/
regex_constants::escape_type_word_assert, /*b*/
regex_constants::escape_type_ascii_control, /*c*/
regex_constants::escape_type_class, /*d*/
regex_constants::escape_type_e, /*e*/
regex_constants::escape_type_control_f, /*f*/
regex_constants::escape_type_extended_backref, /*g*/
regex_constants::escape_type_class, /*h*/
regex_constants::escape_type_class, /*i*/
regex_constants::escape_type_class, /*j*/
regex_constants::escape_type_extended_backref, /*k*/
regex_constants::escape_type_class, /*l*/
regex_constants::escape_type_class, /*m*/
regex_constants::escape_type_control_n, /*n*/
regex_constants::escape_type_class, /*o*/
regex_constants::escape_type_property, /*p*/
regex_constants::escape_type_class, /*q*/
regex_constants::escape_type_control_r, /*r*/
regex_constants::escape_type_class, /*s*/
regex_constants::escape_type_control_t, /*t*/
regex_constants::escape_type_class, /*u*/
regex_constants::escape_type_control_v, /*v*/
regex_constants::escape_type_class, /*w*/
regex_constants::escape_type_hex, /*x*/
regex_constants::escape_type_class, /*y*/
regex_constants::escape_type_end_buffer, /*z*/
regex_constants::syntax_open_brace, /*{*/
regex_constants::syntax_or, /*|*/
regex_constants::syntax_close_brace, /*}*/
regex_constants::escape_type_identity, /*~*/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
regex_constants::escape_type_identity, /**/
};
return char_syntax[(unsigned char)c];
}
// is charT c a combining character?
inline bool is_combining_implementation(std::uint_least16_t c)
{
const std::uint_least16_t combining_ranges[] = { 0x0300, 0x0361,
0x0483, 0x0486,
0x0903, 0x0903,
0x093E, 0x0940,
0x0949, 0x094C,
0x0982, 0x0983,
0x09BE, 0x09C0,
0x09C7, 0x09CC,
0x09D7, 0x09D7,
0x0A3E, 0x0A40,
0x0A83, 0x0A83,
0x0ABE, 0x0AC0,
0x0AC9, 0x0ACC,
0x0B02, 0x0B03,
0x0B3E, 0x0B3E,
0x0B40, 0x0B40,
0x0B47, 0x0B4C,
0x0B57, 0x0B57,
0x0B83, 0x0B83,
0x0BBE, 0x0BBF,
0x0BC1, 0x0BCC,
0x0BD7, 0x0BD7,
0x0C01, 0x0C03,
0x0C41, 0x0C44,
0x0C82, 0x0C83,
0x0CBE, 0x0CBE,
0x0CC0, 0x0CC4,
0x0CC7, 0x0CCB,
0x0CD5, 0x0CD6,
0x0D02, 0x0D03,
0x0D3E, 0x0D40,
0x0D46, 0x0D4C,
0x0D57, 0x0D57,
0x0F7F, 0x0F7F,
0x20D0, 0x20E1,
0x3099, 0x309A,
0xFE20, 0xFE23,
0xffff, 0xffff, };
const std::uint_least16_t* p = combining_ranges + 1;
while (*p < c) p += 2;
--p;
if ((c >= *p) && (c <= *(p + 1)))
return true;
return false;
}
template <class charT>
inline bool is_combining(charT c)
{
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)));
}
template <>
inline bool is_combining<char>(char)
{
return false;
}
template <>
inline bool is_combining<signed char>(signed char)
{
return false;
}
template <>
inline bool is_combining<unsigned char>(unsigned char)
{
return false;
}
#ifdef _MSC_VER
template<>
inline bool is_combining<wchar_t>(wchar_t c)
{
return is_combining_implementation(static_cast<unsigned short>(c));
}
#elif !defined(__DECCXX) && !defined(__osf__) && !defined(__OSF__) && defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
#if defined(WCHAR_MAX) && (WCHAR_MAX <= USHRT_MAX)
template<>
inline bool is_combining<wchar_t>(wchar_t c)
{
return is_combining_implementation(static_cast<unsigned short>(c));
}
#else
template<>
inline bool is_combining<wchar_t>(wchar_t c)
{
return (c >= (std::numeric_limits<uint_least16_t>::max)()) ? false : is_combining_implementation(static_cast<unsigned short>(c));
}
#endif
#endif
//
// is a charT c a line separator?
//
template <class charT>
inline bool is_separator(charT c)
{
return BOOST_REGEX_MAKE_BOOL(
(c == static_cast<charT>('\n'))
|| (c == static_cast<charT>('\r'))
|| (c == static_cast<charT>('\f'))
|| (static_cast<std::uint16_t>(c) == 0x2028u)
|| (static_cast<std::uint16_t>(c) == 0x2029u)
|| (static_cast<std::uint16_t>(c) == 0x85u));
}
template <>
inline bool is_separator<char>(char c)
{
return BOOST_REGEX_MAKE_BOOL((c == '\n') || (c == '\r') || (c == '\f'));
}
//
// get a default collating element:
//
inline std::string lookup_default_collate_name(const std::string& name)
{
//
// these are the POSIX collating names:
//
static const char* def_coll_names[] = {
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "alert", "backspace", "tab", "newline",
"vertical-tab", "form-feed", "carriage-return", "SO", "SI", "DLE", "DC1", "DC2", "DC3", "DC4", "NAK",
"SYN", "ETB", "CAN", "EM", "SUB", "ESC", "IS4", "IS3", "IS2", "IS1", "space", "exclamation-mark",
"quotation-mark", "number-sign", "dollar-sign", "percent-sign", "ampersand", "apostrophe",
"left-parenthesis", "right-parenthesis", "asterisk", "plus-sign", "comma", "hyphen",
"period", "slash", "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
"colon", "semicolon", "less-than-sign", "equals-sign", "greater-than-sign",
"question-mark", "commercial-at", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P",
"Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "left-square-bracket", "backslash",
"right-square-bracket", "circumflex", "underscore", "grave-accent", "a", "b", "c", "d", "e", "f",
"g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "left-curly-bracket",
"vertical-line", "right-curly-bracket", "tilde", "DEL", "",
};
// these multi-character collating elements
// should keep most Western-European locales
// happy - we should really localise these a
// little more - but this will have to do for
// now:
static const char* def_multi_coll[] = {
"ae",
"Ae",
"AE",
"ch",
"Ch",
"CH",
"ll",
"Ll",
"LL",
"ss",
"Ss",
"SS",
"nj",
"Nj",
"NJ",
"dz",
"Dz",
"DZ",
"lj",
"Lj",
"LJ",
"",
};
unsigned int i = 0;
while (*def_coll_names[i])
{
if (def_coll_names[i] == name)
{
return std::string(1, char(i));
}
++i;
}
i = 0;
while (*def_multi_coll[i])
{
if (def_multi_coll[i] == name)
{
return def_multi_coll[i];
}
++i;
}
return std::string();
}
//
// get the state_id of a character classification, the individual
// traits classes then transform that state_id into a bitmask:
//
template <class charT>
struct character_pointer_range
{
const charT* p1;
const charT* p2;
bool operator < (const character_pointer_range& r)const
{
return std::lexicographical_compare(p1, p2, r.p1, r.p2);
}
bool operator == (const character_pointer_range& r)const
{
// Not only do we check that the ranges are of equal size before
// calling std::equal, but there is no other algorithm available:
// not even a non-standard MS one. So forward to unchecked_equal
// in the MS case.
#ifdef __cpp_lib_robust_nonmodifying_seq_ops
return std::equal(p1, p2, r.p1, r.p2);
#elif defined(BOOST_REGEX_MSVC)
if (((p2 - p1) != (r.p2 - r.p1)))
return false;
const charT* with = r.p1;
const charT* pos = p1;
while (pos != p2)
if (*pos++ != *with++) return false;
return true;
#else
return ((p2 - p1) == (r.p2 - r.p1)) && std::equal(p1, p2, r.p1);
#endif
}
};
template <class charT>
int get_default_class_id(const charT* p1, const charT* p2)
{
static const charT data[73] = {
'a', 'l', 'n', 'u', 'm',
'a', 'l', 'p', 'h', 'a',
'b', 'l', 'a', 'n', 'k',
'c', 'n', 't', 'r', 'l',
'd', 'i', 'g', 'i', 't',
'g', 'r', 'a', 'p', 'h',
'l', 'o', 'w', 'e', 'r',
'p', 'r', 'i', 'n', 't',
'p', 'u', 'n', 'c', 't',
's', 'p', 'a', 'c', 'e',
'u', 'n', 'i', 'c', 'o', 'd', 'e',
'u', 'p', 'p', 'e', 'r',
'v',
'w', 'o', 'r', 'd',
'x', 'd', 'i', 'g', 'i', 't',
};
static const character_pointer_range<charT> ranges[21] =
{
{data+0, data+5,}, // alnum
{data+5, data+10,}, // alpha
{data+10, data+15,}, // blank
{data+15, data+20,}, // cntrl
{data+20, data+21,}, // d
{data+20, data+25,}, // digit
{data+25, data+30,}, // graph
{data+29, data+30,}, // h
{data+30, data+31,}, // l
{data+30, data+35,}, // lower
{data+35, data+40,}, // print
{data+40, data+45,}, // punct
{data+45, data+46,}, // s
{data+45, data+50,}, // space
{data+57, data+58,}, // u
{data+50, data+57,}, // unicode
{data+57, data+62,}, // upper
{data+62, data+63,}, // v
{data+63, data+64,}, // w
{data+63, data+67,}, // word
{data+67, data+73,}, // xdigit
};
const character_pointer_range<charT>* ranges_begin = ranges;
const character_pointer_range<charT>* ranges_end = ranges + (sizeof(ranges)/sizeof(ranges[0]));
character_pointer_range<charT> t = { p1, p2, };
const character_pointer_range<charT>* p = std::lower_bound(ranges_begin, ranges_end, t);
if((p != ranges_end) && (t == *p))
return static_cast<int>(p - ranges);
return -1;
}
//
// helper functions:
//
template <class charT>
std::ptrdiff_t global_length(const charT* p)
{
std::ptrdiff_t n = 0;
while(*p)
{
++p;
++n;
}
return n;
}
template<>
inline std::ptrdiff_t global_length<char>(const char* p)
{
return (std::strlen)(p);
}
#ifndef BOOST_NO_WREGEX
template<>
inline std::ptrdiff_t global_length<wchar_t>(const wchar_t* p)
{
return (std::ptrdiff_t)(std::wcslen)(p);
}
#endif
template <class charT>
inline charT global_lower(charT c)
{
return c;
}
template <class charT>
inline charT global_upper(charT c)
{
return c;
}
inline char do_global_lower(char c)
{
return static_cast<char>((std::tolower)((unsigned char)c));
}
inline char do_global_upper(char c)
{
return static_cast<char>((std::toupper)((unsigned char)c));
}
#ifndef BOOST_NO_WREGEX
inline wchar_t do_global_lower(wchar_t c)
{
return (std::towlower)(c);
}
inline wchar_t do_global_upper(wchar_t c)
{
return (std::towupper)(c);
}
#endif
//
// This sucks: declare template specialisations of global_lower/global_upper
// that just forward to the non-template implementation functions. We do
// this because there is one compiler (Compaq Tru64 C++) that doesn't seem
// to differentiate between templates and non-template overloads....
// what's more, the primary template, plus all overloads have to be
// defined in the same translation unit (if one is inline they all must be)
// otherwise the "local template instantiation" compiler option can pick
// the wrong instantiation when linking:
//
template<> inline char global_lower<char>(char c) { return do_global_lower(c); }
template<> inline char global_upper<char>(char c) { return do_global_upper(c); }
#ifndef BOOST_NO_WREGEX
template<> inline wchar_t global_lower<wchar_t>(wchar_t c) { return do_global_lower(c); }
template<> inline wchar_t global_upper<wchar_t>(wchar_t c) { return do_global_upper(c); }
#endif
template <class charT>
int global_value(charT c)
{
static const charT zero = '0';
static const charT nine = '9';
static const charT a = 'a';
static const charT f = 'f';
static const charT A = 'A';
static const charT F = 'F';
if(c > f) return -1;
if(c >= a) return 10 + (c - a);
if(c > F) return -1;
if(c >= A) return 10 + (c - A);
if(c > nine) return -1;
if(c >= zero) return c - zero;
return -1;
}
template <class charT, class traits>
std::intmax_t global_toi(const charT*& p1, const charT* p2, int radix, const traits& t)
{
(void)t; // warning suppression
std::intmax_t limit = (std::numeric_limits<std::intmax_t>::max)() / radix;
std::intmax_t next_value = t.value(*p1, radix);
if((p1 == p2) || (next_value < 0) || (next_value >= radix))
return -1;
std::intmax_t result = 0;
while(p1 != p2)
{
next_value = t.value(*p1, radix);
if((next_value < 0) || (next_value >= radix))
break;
result *= radix;
result += next_value;
++p1;
if (result > limit)
return -1;
}
return result;
}
template <class charT>
inline typename std::enable_if<(sizeof(charT) > 1), const charT*>::type get_escape_R_string()
{
#ifdef BOOST_REGEX_MSVC
# pragma warning(push)
# pragma warning(disable:4309 4245)
#endif
static const charT e1[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
'|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), static_cast<charT>(0x2028),
static_cast<charT>(0x2029), ']', ')', ')', '\0' };
static const charT e2[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
'|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), ']', ')', ')', '\0' };
charT c = static_cast<charT>(0x2029u);
bool b = (static_cast<unsigned>(c) == 0x2029u);
return (b ? e1 : e2);
#ifdef BOOST_REGEX_MSVC
# pragma warning(pop)
#endif
}
template <class charT>
inline typename std::enable_if<(sizeof(charT) == 1), const charT*>::type get_escape_R_string()
{
#ifdef BOOST_REGEX_MSVC
# pragma warning(push)
# pragma warning(disable:4309 4245)
#endif
static const charT e2[] = {
static_cast<charT>('('),
static_cast<charT>('?'),
static_cast<charT>('-'),
static_cast<charT>('x'),
static_cast<charT>(':'),
static_cast<charT>('('),
static_cast<charT>('?'),
static_cast<charT>('>'),
static_cast<charT>('\x0D'),
static_cast<charT>('\x0A'),
static_cast<charT>('?'),
static_cast<charT>('|'),
static_cast<charT>('['),
static_cast<charT>('\x0A'),
static_cast<charT>('\x0B'),
static_cast<charT>('\x0C'),
static_cast<charT>('\x85'),
static_cast<charT>(']'),
static_cast<charT>(')'),
static_cast<charT>(')'),
static_cast<charT>('\0')
};
return e2;
#ifdef BOOST_REGEX_MSVC
# pragma warning(pop)
#endif
}
} // BOOST_REGEX_DETAIL_NS
} // boost
#endif