Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp | 61 |
1 files changed, 53 insertions, 8 deletions
diff --git a/3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp b/3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp index bcae455..106ffcb 100644 --- a/3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp +++ b/3rdParty/Boost/src/boost/regex/v4/cpp_regex_traits.hpp @@ -20,6 +20,8 @@ #define BOOST_CPP_REGEX_TRAITS_HPP_INCLUDED #include <boost/config.hpp> +#include <boost/integer.hpp> +#include <boost/type_traits/make_unsigned.hpp> #ifndef BOOST_NO_STD_LOCALE @@ -107,12 +109,14 @@ template<class charT, class traits> typename parser_buf<charT, traits>::pos_type parser_buf<charT, traits>::seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which) { + typedef typename boost::int_t<sizeof(way) * CHAR_BIT>::least cast_type; + if(which & ::std::ios_base::out) return pos_type(off_type(-1)); std::ptrdiff_t size = this->egptr() - this->eback(); std::ptrdiff_t pos = this->gptr() - this->eback(); charT* g = this->eback(); - switch(way) + switch(static_cast<cast_type>(way)) { case ::std::ios_base::beg: if((off < 0) || (off > size)) @@ -504,8 +508,18 @@ typename cpp_regex_traits_implementation<charT>::string_type // we adhere to gcc's (buggy) preconditions... // BOOST_ASSERT(*p2 == 0); - string_type result; +#if defined(_CPPLIB_VER) + // + // A bug in VC11 and 12 causes the program to hang if we pass a null-string + // to std::collate::transform, but only for certain locales :-( + // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware). + // + if(*p1 == 0) + { + return string_type(1, charT(0)); + } +#endif // // swallowing all exceptions here is a bad idea // however at least one std lib will always throw @@ -579,7 +593,18 @@ typename cpp_regex_traits_implementation<charT>::string_type // however at least one std lib will always throw // std::bad_alloc for certain arguments... // - string_type result; + string_type result, result2; +#if defined(_CPPLIB_VER) + // + // A bug in VC11 and 12 causes the program to hang if we pass a null-string + // to std::collate::transform, but only for certain locales :-( + // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware). + // + if(*p1 == 0) + { + return result; + } +#endif #ifndef BOOST_NO_EXCEPTIONS try{ #endif @@ -598,14 +623,36 @@ typename cpp_regex_traits_implementation<charT>::string_type while(result.size() && (charT(0) == *result.rbegin())) result.erase(result.size() - 1); #endif - BOOST_ASSERT(std::find(result.begin(), result.end(), charT(0)) == result.end()); + // + // We may have NULL's used as separators between sections of the collate string, + // an example would be Boost.Locale. We have no way to detect this case via + // #defines since this can be used with any compiler/platform combination. + // Unfortunately our state machine (which was devised when all implementations + // used underlying C language API's) can't cope with that case. One workaround + // is to replace each character with 2, fortunately this code isn't used that + // much as this is now slower than before :-( + // + typedef typename make_unsigned<charT>::type uchar_type; + result2.reserve(result.size() * 2 + 2); + for(unsigned i = 0; i < result.size(); ++i) + { + if(static_cast<uchar_type>(result[i]) == (std::numeric_limits<uchar_type>::max)()) + { + result2.append(1, charT((std::numeric_limits<uchar_type>::max)())).append(1, charT('b')); + } + else + { + result2.append(1, static_cast<charT>(1 + static_cast<uchar_type>(result[i]))).append(1, charT('b') - 1); + } + } + BOOST_ASSERT(std::find(result2.begin(), result2.end(), charT(0)) == result2.end()); #ifndef BOOST_NO_EXCEPTIONS } catch(...) { } #endif - return result; + return result2; } @@ -621,7 +668,6 @@ typename cpp_regex_traits_implementation<charT>::string_type return pos->second; } #if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\ - && !BOOST_WORKAROUND(BOOST_MSVC, < 1300)\ && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551) std::string name(p1, p2); #else @@ -632,7 +678,6 @@ typename cpp_regex_traits_implementation<charT>::string_type #endif name = lookup_default_collate_name(name); #if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\ - && !BOOST_WORKAROUND(BOOST_MSVC, < 1300)\ && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551) if(name.size()) return string_type(name.begin(), name.end()); @@ -854,7 +899,7 @@ bool cpp_regex_traits_implementation<charT>::isctype(const charT c, char_class_t template <class charT> -inline boost::shared_ptr<const cpp_regex_traits_implementation<charT> > create_cpp_regex_traits(const std::locale& l BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(charT)) +inline boost::shared_ptr<const cpp_regex_traits_implementation<charT> > create_cpp_regex_traits(const std::locale& l) { cpp_regex_traits_base<charT> key(l); return ::boost::object_cache<cpp_regex_traits_base<charT>, cpp_regex_traits_implementation<charT> >::get(key, 5); |