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Do not overload lexical_cast<To, From>(const From&), instead add lexical_cast<To>(character_type,size_type) templates (refs #7421). Added tests for getting &boost::lexical_cast<To,from> functions pointers

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[SVN r80715]
This commit is contained in:
Antony Polukhin
2012-09-26 19:57:31 +00:00
parent 77eff6b47d
commit 824fbd9b06
2 changed files with 64 additions and 6 deletions
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include/boost/lexical_cast.hpp
+48 -6
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@@ -2300,17 +2300,59 @@ namespace boost {
return caster_type::lexical_cast_impl(arg);
}
template <typename Target, typename CharType>
inline Target lexical_cast(const CharType* chars, std::size_t count)
template <typename Target>
inline Target lexical_cast(const char* chars, std::size_t count)
{
BOOST_STATIC_ASSERT_MSG(::boost::detail::is_char_or_wchar<CharType>::value,
"CharType must be a character or wide character type");
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const CharType*>(chars, chars + count)
::boost::iterator_range<const char*>(chars, chars + count)
);
}
template <typename Target>
inline Target lexical_cast(const unsigned char* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const unsigned char*>(chars, chars + count)
);
}
template <typename Target>
inline Target lexical_cast(const signed char* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const signed char*>(chars, chars + count)
);
}
#ifndef BOOST_LCAST_NO_WCHAR_T
template <typename Target>
inline Target lexical_cast(const wchar_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const wchar_t*>(chars, chars + count)
);
}
#endif
#ifndef BOOST_NO_CHAR16_T
template <typename Target>
inline Target lexical_cast(const char16_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const char16_t*>(chars, chars + count)
);
}
#endif
#ifndef BOOST_NO_CHAR32_T
template <typename Target>
inline Target lexical_cast(const char32_t* chars, std::size_t count)
{
return ::boost::lexical_cast<Target>(
::boost::iterator_range<const char32_t*>(chars, chars + count)
);
}
#endif
} // namespace boost
#else // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION