/////////////////////////////////////////////////////////////////////////////// | |
/// \file cpp_regex_traits.hpp | |
/// Contains the definition of the cpp_regex_traits\<\> template, which is a | |
/// wrapper for std::locale that can be used to customize the behavior of | |
/// static and dynamic regexes. | |
// | |
// Copyright 2008 Eric Niebler. Distributed under 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) | |
#ifndef BOOST_XPRESSIVE_TRAITS_CPP_REGEX_TRAITS_HPP_EAN_10_04_2005 | |
#define BOOST_XPRESSIVE_TRAITS_CPP_REGEX_TRAITS_HPP_EAN_10_04_2005 | |
// MS compatible compilers support #pragma once | |
#if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
# pragma once | |
#endif | |
#include <ios> | |
#include <string> | |
#include <locale> | |
#include <sstream> | |
#include <boost/config.hpp> | |
#include <boost/assert.hpp> | |
#include <boost/integer.hpp> | |
#include <boost/mpl/assert.hpp> | |
#include <boost/detail/workaround.hpp> | |
#include <boost/type_traits/is_same.hpp> | |
#include <boost/xpressive/detail/detail_fwd.hpp> | |
#include <boost/xpressive/detail/utility/literals.hpp> | |
// From John Maddock: | |
// Fix for gcc prior to 3.4: std::ctype<wchar_t> doesn't allow masks to be combined, for example: | |
// std::use_facet<std::ctype<wchar_t> >(locale()).is(std::ctype_base::lower|std::ctype_base::upper, L'a'); | |
// incorrectly returns false. | |
// NOTE: later version of the gcc define __GLIBCXX__, not __GLIBCPP__ | |
#if BOOST_WORKAROUND(__GLIBCPP__, != 0) | |
# define BOOST_XPRESSIVE_BUGGY_CTYPE_FACET | |
#endif | |
namespace boost { namespace xpressive | |
{ | |
namespace detail | |
{ | |
// define an unsigned integral typedef of the same size as std::ctype_base::mask | |
typedef boost::uint_t<sizeof(std::ctype_base::mask) * CHAR_BIT>::least umask_t; | |
BOOST_MPL_ASSERT_RELATION(sizeof(std::ctype_base::mask), ==, sizeof(umask_t)); | |
// Calculate what the size of the umaskex_t type should be to fix the 3 extra bitmasks | |
// 11 char categories in ctype_base | |
// + 3 extra categories for xpressive | |
// = 14 total bits needed | |
int const umaskex_bits = (14 > (sizeof(umask_t) * CHAR_BIT)) ? 14 : sizeof(umask_t) * CHAR_BIT; | |
// define an unsigned integral type with at least umaskex_bits | |
typedef boost::uint_t<umaskex_bits>::fast umaskex_t; | |
BOOST_MPL_ASSERT_RELATION(sizeof(umask_t), <=, sizeof(umaskex_t)); | |
// cast a ctype mask to a umaskex_t | |
template<std::ctype_base::mask Mask> | |
struct mask_cast | |
{ | |
BOOST_STATIC_CONSTANT(umaskex_t, value = static_cast<umask_t>(Mask)); | |
}; | |
#ifdef __CYGWIN__ | |
// Work around a gcc warning on cygwin | |
template<> | |
struct mask_cast<std::ctype_base::print> | |
{ | |
BOOST_MPL_ASSERT_RELATION('\227', ==, std::ctype_base::print); | |
BOOST_STATIC_CONSTANT(umaskex_t, value = 0227); | |
}; | |
#endif | |
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION | |
template<std::ctype_base::mask Mask> | |
umaskex_t const mask_cast<Mask>::value; | |
#endif | |
#ifndef BOOST_XPRESSIVE_BUGGY_CTYPE_FACET | |
// an unsigned integer with the highest bit set | |
umaskex_t const highest_bit = static_cast<umaskex_t>(1) << (sizeof(umaskex_t) * CHAR_BIT - 1); | |
/////////////////////////////////////////////////////////////////////////////// | |
// unused_mask | |
// find a bit in an int that isn't set | |
template<umaskex_t In, umaskex_t Out = highest_bit, bool Done = (0 == (Out & In))> | |
struct unused_mask | |
{ | |
BOOST_MPL_ASSERT_RELATION(1, !=, Out); | |
BOOST_STATIC_CONSTANT(umaskex_t, value = (unused_mask<In, (Out >> 1)>::value)); | |
}; | |
template<umaskex_t In, umaskex_t Out> | |
struct unused_mask<In, Out, true> | |
{ | |
BOOST_STATIC_CONSTANT(umaskex_t, value = Out); | |
}; | |
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION | |
template<umaskex_t In, umaskex_t Out, bool Done> | |
umaskex_t const unused_mask<In, Out, Done>::value; | |
#endif | |
umaskex_t const std_ctype_alnum = mask_cast<std::ctype_base::alnum>::value; | |
umaskex_t const std_ctype_alpha = mask_cast<std::ctype_base::alpha>::value; | |
umaskex_t const std_ctype_cntrl = mask_cast<std::ctype_base::cntrl>::value; | |
umaskex_t const std_ctype_digit = mask_cast<std::ctype_base::digit>::value; | |
umaskex_t const std_ctype_graph = mask_cast<std::ctype_base::graph>::value; | |
umaskex_t const std_ctype_lower = mask_cast<std::ctype_base::lower>::value; | |
umaskex_t const std_ctype_print = mask_cast<std::ctype_base::print>::value; | |
umaskex_t const std_ctype_punct = mask_cast<std::ctype_base::punct>::value; | |
umaskex_t const std_ctype_space = mask_cast<std::ctype_base::space>::value; | |
umaskex_t const std_ctype_upper = mask_cast<std::ctype_base::upper>::value; | |
umaskex_t const std_ctype_xdigit = mask_cast<std::ctype_base::xdigit>::value; | |
// Reserve some bits for the implementation | |
#if defined(__GLIBCXX__) | |
umaskex_t const std_ctype_reserved = 0x8000; | |
#elif defined(_CPPLIB_VER) && defined(BOOST_WINDOWS) | |
umaskex_t const std_ctype_reserved = 0x8200; | |
#else | |
umaskex_t const std_ctype_reserved = 0; | |
#endif | |
// Bitwise-or all the ctype masks together | |
umaskex_t const all_ctype_masks = std_ctype_reserved | |
| std_ctype_alnum | std_ctype_alpha | std_ctype_cntrl | std_ctype_digit | |
| std_ctype_graph | std_ctype_lower | std_ctype_print | std_ctype_punct | |
| std_ctype_space | std_ctype_upper | std_ctype_xdigit; | |
// define a new mask for "underscore" ("word" == alnum | underscore) | |
umaskex_t const non_std_ctype_underscore = unused_mask<all_ctype_masks>::value; | |
// define a new mask for "blank" | |
umaskex_t const non_std_ctype_blank = unused_mask<all_ctype_masks | non_std_ctype_underscore>::value; | |
// define a new mask for "newline" | |
umaskex_t const non_std_ctype_newline = unused_mask<all_ctype_masks | non_std_ctype_underscore | non_std_ctype_blank>::value; | |
#else | |
/////////////////////////////////////////////////////////////////////////////// | |
// Ugly work-around for buggy ctype facets. | |
umaskex_t const std_ctype_alnum = 1 << 0; | |
umaskex_t const std_ctype_alpha = 1 << 1; | |
umaskex_t const std_ctype_cntrl = 1 << 2; | |
umaskex_t const std_ctype_digit = 1 << 3; | |
umaskex_t const std_ctype_graph = 1 << 4; | |
umaskex_t const std_ctype_lower = 1 << 5; | |
umaskex_t const std_ctype_print = 1 << 6; | |
umaskex_t const std_ctype_punct = 1 << 7; | |
umaskex_t const std_ctype_space = 1 << 8; | |
umaskex_t const std_ctype_upper = 1 << 9; | |
umaskex_t const std_ctype_xdigit = 1 << 10; | |
umaskex_t const non_std_ctype_underscore = 1 << 11; | |
umaskex_t const non_std_ctype_blank = 1 << 12; | |
umaskex_t const non_std_ctype_newline = 1 << 13; | |
static umaskex_t const std_masks[] = | |
{ | |
mask_cast<std::ctype_base::alnum>::value | |
, mask_cast<std::ctype_base::alpha>::value | |
, mask_cast<std::ctype_base::cntrl>::value | |
, mask_cast<std::ctype_base::digit>::value | |
, mask_cast<std::ctype_base::graph>::value | |
, mask_cast<std::ctype_base::lower>::value | |
, mask_cast<std::ctype_base::print>::value | |
, mask_cast<std::ctype_base::punct>::value | |
, mask_cast<std::ctype_base::space>::value | |
, mask_cast<std::ctype_base::upper>::value | |
, mask_cast<std::ctype_base::xdigit>::value | |
}; | |
inline int mylog2(umaskex_t i) | |
{ | |
return "\0\0\1\0\2\0\0\0\3"[i & 0xf] | |
+ "\0\4\5\0\6\0\0\0\7"[(i & 0xf0) >> 04] | |
+ "\0\10\11\0\12\0\0\0\13"[(i & 0xf00) >> 010]; | |
} | |
#endif | |
// convenient constant for the extra masks | |
umaskex_t const non_std_ctype_masks = non_std_ctype_underscore | non_std_ctype_blank | non_std_ctype_newline; | |
/////////////////////////////////////////////////////////////////////////////// | |
// cpp_regex_traits_base | |
// BUGBUG this should be replaced with a regex facet that lets you query for | |
// an array of underscore characters and an array of line separator characters. | |
template<typename Char, std::size_t SizeOfChar = sizeof(Char)> | |
struct cpp_regex_traits_base | |
{ | |
protected: | |
void imbue(std::locale const &) | |
{ | |
} | |
static bool is(std::ctype<Char> const &ct, Char ch, umaskex_t mask) | |
{ | |
#ifndef BOOST_XPRESSIVE_BUGGY_CTYPE_FACET | |
if(ct.is((std::ctype_base::mask)(umask_t)mask, ch)) | |
{ | |
return true; | |
} | |
#else | |
umaskex_t tmp = mask & ~non_std_ctype_masks; | |
for(umaskex_t i; 0 != (i = (tmp & (~tmp+1))); tmp &= ~i) | |
{ | |
std::ctype_base::mask m = (std::ctype_base::mask)(umask_t)std_masks[mylog2(i)]; | |
if(ct.is(m, ch)) | |
{ | |
return true; | |
} | |
} | |
#endif | |
return ((mask & non_std_ctype_blank) && cpp_regex_traits_base::is_blank(ch)) | |
|| ((mask & non_std_ctype_underscore) && cpp_regex_traits_base::is_underscore(ch)) | |
|| ((mask & non_std_ctype_newline) && cpp_regex_traits_base::is_newline(ch)); | |
} | |
private: | |
static bool is_blank(Char ch) | |
{ | |
BOOST_MPL_ASSERT_RELATION('\t', ==, L'\t'); | |
BOOST_MPL_ASSERT_RELATION(' ', ==, L' '); | |
return L' ' == ch || L'\t' == ch; | |
} | |
static bool is_underscore(Char ch) | |
{ | |
BOOST_MPL_ASSERT_RELATION('_', ==, L'_'); | |
return L'_' == ch; | |
} | |
static bool is_newline(Char ch) | |
{ | |
BOOST_MPL_ASSERT_RELATION('\r', ==, L'\r'); | |
BOOST_MPL_ASSERT_RELATION('\n', ==, L'\n'); | |
BOOST_MPL_ASSERT_RELATION('\f', ==, L'\f'); | |
return L'\r' == ch || L'\n' == ch || L'\f' == ch | |
|| (1 < SizeOfChar && (0x2028u == ch || 0x2029u == ch || 0x85u == ch)); | |
} | |
}; | |
#ifndef BOOST_XPRESSIVE_BUGGY_CTYPE_FACET | |
template<typename Char> | |
struct cpp_regex_traits_base<Char, 1> | |
{ | |
protected: | |
void imbue(std::locale const &loc) | |
{ | |
int i = 0; | |
Char allchars[UCHAR_MAX + 1]; | |
for(i = 0; i <= static_cast<int>(UCHAR_MAX); ++i) | |
{ | |
allchars[i] = static_cast<Char>(i); | |
} | |
std::ctype<Char> const &ct = BOOST_USE_FACET(std::ctype<Char>, loc); | |
std::ctype_base::mask tmp[UCHAR_MAX + 1]; | |
ct.is(allchars, allchars + UCHAR_MAX + 1, tmp); | |
for(i = 0; i <= static_cast<int>(UCHAR_MAX); ++i) | |
{ | |
this->masks_[i] = static_cast<umask_t>(tmp[i]); | |
BOOST_ASSERT(0 == (this->masks_[i] & non_std_ctype_masks)); | |
} | |
this->masks_[static_cast<unsigned char>('_')] |= non_std_ctype_underscore; | |
this->masks_[static_cast<unsigned char>(' ')] |= non_std_ctype_blank; | |
this->masks_[static_cast<unsigned char>('\t')] |= non_std_ctype_blank; | |
this->masks_[static_cast<unsigned char>('\n')] |= non_std_ctype_newline; | |
this->masks_[static_cast<unsigned char>('\r')] |= non_std_ctype_newline; | |
this->masks_[static_cast<unsigned char>('\f')] |= non_std_ctype_newline; | |
} | |
bool is(std::ctype<Char> const &, Char ch, umaskex_t mask) const | |
{ | |
return 0 != (this->masks_[static_cast<unsigned char>(ch)] & mask); | |
} | |
private: | |
umaskex_t masks_[UCHAR_MAX + 1]; | |
}; | |
#endif | |
} // namespace detail | |
/////////////////////////////////////////////////////////////////////////////// | |
// cpp_regex_traits | |
// | |
/// \brief Encapsaulates a std::locale for use by the | |
/// basic_regex\<\> class template. | |
template<typename Char> | |
struct cpp_regex_traits | |
: detail::cpp_regex_traits_base<Char> | |
{ | |
typedef Char char_type; | |
typedef std::basic_string<char_type> string_type; | |
typedef std::locale locale_type; | |
typedef detail::umaskex_t char_class_type; | |
typedef regex_traits_version_2_tag version_tag; | |
typedef detail::cpp_regex_traits_base<Char> base_type; | |
/// Initialize a cpp_regex_traits object to use the specified std::locale, | |
/// or the global std::locale if none is specified. | |
/// | |
cpp_regex_traits(locale_type const &loc = locale_type()) | |
: base_type() | |
, loc_() | |
{ | |
this->imbue(loc); | |
} | |
/// Checks two cpp_regex_traits objects for equality | |
/// | |
/// \return this->getloc() == that.getloc(). | |
bool operator ==(cpp_regex_traits<char_type> const &that) const | |
{ | |
return this->loc_ == that.loc_; | |
} | |
/// Checks two cpp_regex_traits objects for inequality | |
/// | |
/// \return this->getloc() != that.getloc(). | |
bool operator !=(cpp_regex_traits<char_type> const &that) const | |
{ | |
return this->loc_ != that.loc_; | |
} | |
/// Convert a char to a Char | |
/// | |
/// \param ch The source character. | |
/// \return std::use_facet\<std::ctype\<char_type\> \>(this->getloc()).widen(ch). | |
char_type widen(char ch) const | |
{ | |
return this->ctype_->widen(ch); | |
} | |
/// Returns a hash value for a Char in the range [0, UCHAR_MAX] | |
/// | |
/// \param ch The source character. | |
/// \return a value between 0 and UCHAR_MAX, inclusive. | |
static unsigned char hash(char_type ch) | |
{ | |
return static_cast<unsigned char>(std::char_traits<Char>::to_int_type(ch)); | |
} | |
/// No-op | |
/// | |
/// \param ch The source character. | |
/// \return ch | |
static char_type translate(char_type ch) | |
{ | |
return ch; | |
} | |
/// Converts a character to lower-case using the internally-stored std::locale. | |
/// | |
/// \param ch The source character. | |
/// \return std::tolower(ch, this->getloc()). | |
char_type translate_nocase(char_type ch) const | |
{ | |
return this->ctype_->tolower(ch); | |
} | |
/// Converts a character to lower-case using the internally-stored std::locale. | |
/// | |
/// \param ch The source character. | |
/// \return std::tolower(ch, this->getloc()). | |
char_type tolower(char_type ch) const | |
{ | |
return this->ctype_->tolower(ch); | |
} | |
/// Converts a character to upper-case using the internally-stored std::locale. | |
/// | |
/// \param ch The source character. | |
/// \return std::toupper(ch, this->getloc()). | |
char_type toupper(char_type ch) const | |
{ | |
return this->ctype_->toupper(ch); | |
} | |
/// Returns a string_type containing all the characters that compare equal | |
/// disregrarding case to the one passed in. This function can only be called | |
/// if has_fold_case\<cpp_regex_traits\<Char\> \>::value is true. | |
/// | |
/// \param ch The source character. | |
/// \return string_type containing all chars which are equal to ch when disregarding | |
/// case | |
string_type fold_case(char_type ch) const | |
{ | |
BOOST_MPL_ASSERT((is_same<char_type, char>)); | |
char_type ntcs[] = { | |
this->ctype_->tolower(ch) | |
, this->ctype_->toupper(ch) | |
, 0 | |
}; | |
if(ntcs[1] == ntcs[0]) | |
ntcs[1] = 0; | |
return string_type(ntcs); | |
} | |
/// Checks to see if a character is within a character range. | |
/// | |
/// \param first The bottom of the range, inclusive. | |
/// \param last The top of the range, inclusive. | |
/// \param ch The source character. | |
/// \return first <= ch && ch <= last. | |
static bool in_range(char_type first, char_type last, char_type ch) | |
{ | |
return first <= ch && ch <= last; | |
} | |
/// Checks to see if a character is within a character range, irregardless of case. | |
/// | |
/// \param first The bottom of the range, inclusive. | |
/// \param last The top of the range, inclusive. | |
/// \param ch The source character. | |
/// \return in_range(first, last, ch) || in_range(first, last, tolower(ch, this->getloc())) || | |
/// in_range(first, last, toupper(ch, this->getloc())) | |
/// \attention The default implementation doesn't do proper Unicode | |
/// case folding, but this is the best we can do with the standard | |
/// ctype facet. | |
bool in_range_nocase(char_type first, char_type last, char_type ch) const | |
{ | |
// NOTE: this default implementation doesn't do proper Unicode | |
// case folding, but this is the best we can do with the standard | |
// std::ctype facet. | |
return this->in_range(first, last, ch) | |
|| this->in_range(first, last, this->ctype_->toupper(ch)) | |
|| this->in_range(first, last, this->ctype_->tolower(ch)); | |
} | |
/// INTERNAL ONLY | |
//string_type transform(char_type const *begin, char_type const *end) const | |
//{ | |
// return this->collate_->transform(begin, end); | |
//} | |
/// Returns a sort key for the character sequence designated by the iterator range [F1, F2) | |
/// such that if the character sequence [G1, G2) sorts before the character sequence [H1, H2) | |
/// then v.transform(G1, G2) \< v.transform(H1, H2). | |
/// | |
/// \attention Not currently used | |
template<typename FwdIter> | |
string_type transform(FwdIter begin, FwdIter end) const | |
{ | |
//string_type str(begin, end); | |
//return this->transform(str.data(), str.data() + str.size()); | |
BOOST_ASSERT(false); | |
return string_type(); | |
} | |
/// Returns a sort key for the character sequence designated by the iterator range [F1, F2) | |
/// such that if the character sequence [G1, G2) sorts before the character sequence [H1, H2) | |
/// when character case is not considered then | |
/// v.transform_primary(G1, G2) \< v.transform_primary(H1, H2). | |
/// | |
/// \attention Not currently used | |
template<typename FwdIter> | |
string_type transform_primary(FwdIter begin, FwdIter end) const | |
{ | |
BOOST_ASSERT(false); // TODO implement me | |
return string_type(); | |
} | |
/// Returns a sequence of characters that represents the collating element | |
/// consisting of the character sequence designated by the iterator range [F1, F2). | |
/// Returns an empty string if the character sequence is not a valid collating element. | |
/// | |
/// \attention Not currently used | |
template<typename FwdIter> | |
string_type lookup_collatename(FwdIter begin, FwdIter end) const | |
{ | |
BOOST_ASSERT(false); // TODO implement me | |
return string_type(); | |
} | |
/// For the character class name represented by the specified character sequence, | |
/// return the corresponding bitmask representation. | |
/// | |
/// \param begin A forward iterator to the start of the character sequence representing | |
/// the name of the character class. | |
/// \param end The end of the character sequence. | |
/// \param icase Specifies whether the returned bitmask should represent the case-insensitive | |
/// version of the character class. | |
/// \return A bitmask representing the character class. | |
template<typename FwdIter> | |
char_class_type lookup_classname(FwdIter begin, FwdIter end, bool icase) const | |
{ | |
static detail::umaskex_t const icase_masks = | |
detail::std_ctype_lower | detail::std_ctype_upper; | |
BOOST_ASSERT(begin != end); | |
char_class_type char_class = this->lookup_classname_impl_(begin, end); | |
if(0 == char_class) | |
{ | |
// convert the string to lowercase | |
string_type classname(begin, end); | |
for(typename string_type::size_type i = 0, len = classname.size(); i < len; ++i) | |
{ | |
classname[i] = this->translate_nocase(classname[i]); | |
} | |
char_class = this->lookup_classname_impl_(classname.begin(), classname.end()); | |
} | |
// erase case-sensitivity if icase==true | |
if(icase && 0 != (char_class & icase_masks)) | |
{ | |
char_class |= icase_masks; | |
} | |
return char_class; | |
} | |
/// Tests a character against a character class bitmask. | |
/// | |
/// \param ch The character to test. | |
/// \param mask The character class bitmask against which to test. | |
/// \pre mask is a bitmask returned by lookup_classname, or is several such masks bit-or'ed | |
/// together. | |
/// \return true if the character is a member of any of the specified character classes, false | |
/// otherwise. | |
bool isctype(char_type ch, char_class_type mask) const | |
{ | |
return this->base_type::is(*this->ctype_, ch, mask); | |
} | |
/// Convert a digit character into the integer it represents. | |
/// | |
/// \param ch The digit character. | |
/// \param radix The radix to use for the conversion. | |
/// \pre radix is one of 8, 10, or 16. | |
/// \return -1 if ch is not a digit character, the integer value of the character otherwise. | |
/// The conversion is performed by imbueing a std::stringstream with this-\>getloc(); | |
/// setting the radix to one of oct, hex or dec; inserting ch into the stream; and | |
/// extracting an int. | |
int value(char_type ch, int radix) const | |
{ | |
BOOST_ASSERT(8 == radix || 10 == radix || 16 == radix); | |
int val = -1; | |
std::basic_stringstream<char_type> str; | |
str.imbue(this->getloc()); | |
str << (8 == radix ? std::oct : (16 == radix ? std::hex : std::dec)); | |
str.put(ch); | |
str >> val; | |
return str.fail() ? -1 : val; | |
} | |
/// Imbues *this with loc | |
/// | |
/// \param loc A std::locale. | |
/// \return the previous std::locale used by *this. | |
locale_type imbue(locale_type loc) | |
{ | |
locale_type old_loc = this->loc_; | |
this->loc_ = loc; | |
this->ctype_ = &BOOST_USE_FACET(std::ctype<char_type>, this->loc_); | |
//this->collate_ = &BOOST_USE_FACET(std::collate<char_type>, this->loc_); | |
this->base_type::imbue(this->loc_); | |
return old_loc; | |
} | |
/// Returns the current std::locale used by *this. | |
/// | |
locale_type getloc() const | |
{ | |
return this->loc_; | |
} | |
private: | |
/////////////////////////////////////////////////////////////////////////////// | |
// char_class_pair | |
/// INTERNAL ONLY | |
struct char_class_pair | |
{ | |
char_type const *class_name_; | |
char_class_type class_type_; | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// char_class | |
/// INTERNAL ONLY | |
static char_class_pair const &char_class(std::size_t j) | |
{ | |
static char_class_pair const s_char_class_map[] = | |
{ | |
{ BOOST_XPR_CSTR_(char_type, "alnum"), detail::std_ctype_alnum } | |
, { BOOST_XPR_CSTR_(char_type, "alpha"), detail::std_ctype_alpha } | |
, { BOOST_XPR_CSTR_(char_type, "blank"), detail::non_std_ctype_blank } | |
, { BOOST_XPR_CSTR_(char_type, "cntrl"), detail::std_ctype_cntrl } | |
, { BOOST_XPR_CSTR_(char_type, "d"), detail::std_ctype_digit } | |
, { BOOST_XPR_CSTR_(char_type, "digit"), detail::std_ctype_digit } | |
, { BOOST_XPR_CSTR_(char_type, "graph"), detail::std_ctype_graph } | |
, { BOOST_XPR_CSTR_(char_type, "lower"), detail::std_ctype_lower } | |
, { BOOST_XPR_CSTR_(char_type, "newline"),detail::non_std_ctype_newline } | |
, { BOOST_XPR_CSTR_(char_type, "print"), detail::std_ctype_print } | |
, { BOOST_XPR_CSTR_(char_type, "punct"), detail::std_ctype_punct } | |
, { BOOST_XPR_CSTR_(char_type, "s"), detail::std_ctype_space } | |
, { BOOST_XPR_CSTR_(char_type, "space"), detail::std_ctype_space } | |
, { BOOST_XPR_CSTR_(char_type, "upper"), detail::std_ctype_upper } | |
, { BOOST_XPR_CSTR_(char_type, "w"), detail::std_ctype_alnum | detail::non_std_ctype_underscore } | |
, { BOOST_XPR_CSTR_(char_type, "xdigit"), detail::std_ctype_xdigit } | |
, { 0, 0 } | |
}; | |
return s_char_class_map[j]; | |
} | |
/////////////////////////////////////////////////////////////////////////////// | |
// lookup_classname_impl | |
/// INTERNAL ONLY | |
template<typename FwdIter> | |
static char_class_type lookup_classname_impl_(FwdIter begin, FwdIter end) | |
{ | |
// find the classname | |
typedef cpp_regex_traits<Char> this_t; | |
for(std::size_t j = 0; 0 != this_t::char_class(j).class_name_; ++j) | |
{ | |
if(this_t::compare_(this_t::char_class(j).class_name_, begin, end)) | |
{ | |
return this_t::char_class(j).class_type_; | |
} | |
} | |
return 0; | |
} | |
/// INTERNAL ONLY | |
template<typename FwdIter> | |
static bool compare_(char_type const *name, FwdIter begin, FwdIter end) | |
{ | |
for(; *name && begin != end; ++name, ++begin) | |
{ | |
if(*name != *begin) | |
{ | |
return false; | |
} | |
} | |
return !*name && begin == end; | |
} | |
locale_type loc_; | |
std::ctype<char_type> const *ctype_; | |
//std::collate<char_type> const *collate_; | |
}; | |
/////////////////////////////////////////////////////////////////////////////// | |
// cpp_regex_traits<>::hash specializations | |
template<> | |
inline unsigned char cpp_regex_traits<unsigned char>::hash(unsigned char ch) | |
{ | |
return ch; | |
} | |
template<> | |
inline unsigned char cpp_regex_traits<char>::hash(char ch) | |
{ | |
return static_cast<unsigned char>(ch); | |
} | |
template<> | |
inline unsigned char cpp_regex_traits<signed char>::hash(signed char ch) | |
{ | |
return static_cast<unsigned char>(ch); | |
} | |
#ifndef BOOST_XPRESSIVE_NO_WREGEX | |
template<> | |
inline unsigned char cpp_regex_traits<wchar_t>::hash(wchar_t ch) | |
{ | |
return static_cast<unsigned char>(ch); | |
} | |
#endif | |
// Narrow C++ traits has fold_case() member function. | |
template<> | |
struct has_fold_case<cpp_regex_traits<char> > | |
: mpl::true_ | |
{ | |
}; | |
}} | |
#endif |