// with additional fixes and suggestions from Gennaro Prota,
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
-// Cheng Yang, Matthew Bradbury, David W. Birdsall and other Boosters
-// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2012
+// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
+// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2013
#include <boost/config.hpp>
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
#define BOOST_LCAST_NO_WCHAR_T
#endif
-#if (defined(__MINGW32__) || defined(__MINGW64__)) && (__GNUC__ == 4) \
- && ((__GNUC_MINOR__ == 4) || (__GNUC_MINOR__ == 5)) && defined(__STRICT_ANSI__) \
- && !defined(BOOST_LCAST_NO_WCHAR_T)
-
-// workaround for a mingw bug
-// http://sourceforge.net/tracker/index.php?func=detail&aid=2373234&group_id=2435&atid=102435
-#include <_mingw.h>
-#if (__GNUC_MINOR__ == 4)
-extern "C" {
-_CRTIMP int __cdecl swprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-_CRTIMP int __cdecl vswprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-}
-#endif
-#if (__GNUC_MINOR__ == 5)
-extern "C" {
-_CRTIMP int __cdecl swprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-_CRTIMP int __cdecl vswprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , va_list);
-}
-#endif
-#endif
-
#include <climits>
#include <cstddef>
-#include <istream>
#include <string>
#include <cstring>
#include <cstdio>
#include <typeinfo>
#include <exception>
-#include <cmath>
#include <boost/limits.hpp>
#include <boost/mpl/if.hpp>
#include <boost/throw_exception.hpp>
-#include <boost/type_traits/is_pointer.hpp>
-#include <boost/type_traits/is_integral.hpp>
-#include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/type_traits/remove_pointer.hpp>
-#include <boost/numeric/conversion/cast.hpp>
#include <boost/type_traits/ice.hpp>
-#include <boost/type_traits/make_unsigned.hpp>
-#include <boost/type_traits/is_signed.hpp>
-#include <boost/math/special_functions/sign.hpp>
-#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/type_traits/is_pointer.hpp>
#include <boost/static_assert.hpp>
#include <boost/detail/lcast_precision.hpp>
#include <boost/detail/workaround.hpp>
-#if !defined(__SUNPRO_CC)
-#include <boost/container/container_fwd.hpp>
-#endif // !defined(__SUNPRO_CC)
-#ifndef BOOST_NO_CWCHAR
-# include <cwchar>
-#endif
+
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
#else
# ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
-# warning "Unable to use <locale> header. boost::lexical_cast will use the 'C' locale."
-# define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+ // Getting error at this point means, that your STL library is old/lame/misconfigured.
+ // If nothing can be done with STL library, define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE,
+ // but beware: lexical_cast will understand only 'C' locale delimeters and thousands
+ // separators.
+# error "Unable to use <locale> header. Define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE to force "
+# error "boost::lexical_cast to use only 'C' locale during conversions."
# endif
#endif
namespace boost
{
// exception used to indicate runtime lexical_cast failure
- class bad_lexical_cast :
+ class BOOST_SYMBOL_VISIBLE bad_lexical_cast :
// workaround MSVC bug with std::bad_cast when _HAS_EXCEPTIONS == 0
#if defined(BOOST_MSVC) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS
public std::exception
{
public:
- bad_lexical_cast() :
+ bad_lexical_cast() BOOST_NOEXCEPT :
#ifndef BOOST_NO_TYPEID
source(&typeid(void)), target(&typeid(void))
#else
bad_lexical_cast(
const std::type_info &source_type_arg,
- const std::type_info &target_type_arg) :
+ const std::type_info &target_type_arg) BOOST_NOEXCEPT :
source(&source_type_arg), target(&target_type_arg)
{
}
return *target;
}
+#ifndef BOOST_NO_CXX11_NOEXCEPT
+ virtual const char *what() const noexcept
+#else
virtual const char *what() const throw()
+#endif
{
return "bad lexical cast: "
"source type value could not be interpreted as target";
}
+
+#ifndef BOOST_NO_CXX11_NOEXCEPT
+ virtual ~bad_lexical_cast() BOOST_NOEXCEPT
+#else
virtual ~bad_lexical_cast() throw()
- {
- }
+#endif
+ {}
private:
const std::type_info *source;
const std::type_info *target;
};
- namespace detail // selectors for choosing stream character type
- {
- template<typename Type>
- struct stream_char
+ namespace detail // widest_char
{
- typedef char type;
- };
+ template <typename TargetChar, typename SourceChar>
+ struct widest_char
+ {
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ (sizeof(TargetChar) > sizeof(SourceChar))
+ , TargetChar
+ , SourceChar >::type type;
+ };
+ }
+} // namespace boost
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- template<class CharT, class Traits, class Alloc>
- struct stream_char< std::basic_string<CharT,Traits,Alloc> >
- {
- typedef CharT type;
- };
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) && !defined(__PGIC__)
-#if !defined(__SUNPRO_CC)
- template<class CharT, class Traits, class Alloc>
- struct stream_char< ::boost::container::basic_string<CharT,Traits,Alloc> >
- {
- typedef CharT type;
- };
-#endif // !defined(__SUNPRO_CC)
+#include <cmath>
+#include <istream>
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+#include <array>
#endif
-#ifndef BOOST_LCAST_NO_WCHAR_T
-#ifndef BOOST_NO_INTRINSIC_WCHAR_T
- template<>
- struct stream_char<wchar_t>
- {
- typedef wchar_t type;
- };
+#include <boost/array.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+#include <boost/type_traits/is_signed.hpp>
+#include <boost/type_traits/is_integral.hpp>
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/remove_pointer.hpp>
+#include <boost/type_traits/has_left_shift.hpp>
+#include <boost/type_traits/has_right_shift.hpp>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/range/iterator_range_core.hpp>
+#include <boost/container/container_fwd.hpp>
+#include <boost/integer.hpp>
+#ifndef BOOST_NO_CWCHAR
+# include <cwchar>
#endif
- template<>
- struct stream_char<wchar_t *>
- {
- typedef wchar_t type;
- };
+namespace boost {
- template<>
- struct stream_char<const wchar_t *>
+ namespace detail // is_char_or_wchar<...>
{
- typedef wchar_t type;
- };
+ // returns true, if T is one of the character types
+ template < typename T >
+ struct is_char_or_wchar
+ {
+ typedef boost::type_traits::ice_or<
+ boost::is_same< T, char >::value,
+ #ifndef BOOST_LCAST_NO_WCHAR_T
+ boost::is_same< T, wchar_t >::value,
+ #endif
+ #ifndef BOOST_NO_CXX11_CHAR16_T
+ boost::is_same< T, char16_t >::value,
+ #endif
+ #ifndef BOOST_NO_CXX11_CHAR32_T
+ boost::is_same< T, char32_t >::value,
+ #endif
+ boost::is_same< T, unsigned char >::value,
+ boost::is_same< T, signed char >::value
+ > result_type;
+
+ BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+ };
+ }
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- template<>
- struct stream_char<std::wstring>
+ namespace detail // normalize_single_byte_char<Char>
{
- typedef wchar_t type;
- };
-#endif
-#endif
+ // Converts signed/unsigned char to char
+ template < class Char >
+ struct normalize_single_byte_char
+ {
+ typedef Char type;
+ };
+ template <>
+ struct normalize_single_byte_char< signed char >
+ {
+ typedef char type;
+ };
-#ifndef BOOST_NO_CHAR16_T
+ template <>
+ struct normalize_single_byte_char< unsigned char >
+ {
+ typedef char type;
+ };
+ }
- template<>
- struct stream_char<char16_t>
+ namespace detail // deduce_character_type_later<T>
{
- typedef char16_t type;
- };
+ // Helper type, meaning that stram character for T must be deduced
+ // at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
+ template < class T > struct deduce_character_type_later {};
+ }
- template<>
- struct stream_char<char16_t *>
+ namespace detail // stream_char_common<T>
{
- typedef char16_t type;
- };
+ // Selectors to choose stream character type (common for Source and Target)
+ // Returns one of char, wchar_t, char16_t, char32_t or deduce_character_type_later<T> types
+ // Executed on Stage 1 (See deduce_source_char<T> and deduce_target_char<T>)
+ template < typename Type >
+ struct stream_char_common: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Type >::value,
+ Type,
+ boost::detail::deduce_character_type_later< Type >
+ > {};
+
+ template < typename Char >
+ struct stream_char_common< Char* >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< Char* >
+ > {};
+
+ template < typename Char >
+ struct stream_char_common< const Char* >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< const Char* >
+ > {};
+
+ template < typename Char >
+ struct stream_char_common< boost::iterator_range< Char* > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::iterator_range< Char* > >
+ > {};
+
+ template < typename Char >
+ struct stream_char_common< boost::iterator_range< const Char* > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::iterator_range< const Char* > >
+ > {};
+
+ template < class Char, class Traits, class Alloc >
+ struct stream_char_common< std::basic_string< Char, Traits, Alloc > >
+ {
+ typedef Char type;
+ };
- template<>
- struct stream_char<const char16_t *>
- {
- typedef char16_t type;
- };
+ template < class Char, class Traits, class Alloc >
+ struct stream_char_common< boost::container::basic_string< Char, Traits, Alloc > >
+ {
+ typedef Char type;
+ };
+ template < typename Char, std::size_t N >
+ struct stream_char_common< boost::array< Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::array< Char, N > >
+ > {};
+
+ template < typename Char, std::size_t N >
+ struct stream_char_common< boost::array< const Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::array< const Char, N > >
+ > {};
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+ template < typename Char, std::size_t N >
+ struct stream_char_common< std::array<Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< std::array< Char, N > >
+ > {};
+
+ template < typename Char, std::size_t N >
+ struct stream_char_common< std::array< const Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_char_or_wchar< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< std::array< const Char, N > >
+ > {};
+#endif
+
+#ifdef BOOST_HAS_INT128
+ template <> struct stream_char_common< boost::int128_type >: public boost::mpl::identity< char > {};
+ template <> struct stream_char_common< boost::uint128_type >: public boost::mpl::identity< char > {};
+#endif
+
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && defined(BOOST_NO_INTRINSIC_WCHAR_T)
+ template <>
+ struct stream_char_common< wchar_t >
+ {
+ typedef char type;
+ };
#endif
+ }
-#ifndef BOOST_NO_CHAR32_T
-
- template<>
- struct stream_char<char32_t>
+ namespace detail // deduce_source_char_impl<T>
{
- typedef char32_t type;
- };
+ // If type T is `deduce_character_type_later` type, then tries to deduce
+ // character type using boost::has_left_shift<T> metafunction.
+ // Otherwise supplied type T is a character type, that must be normalized
+ // using normalize_single_byte_char<Char>.
+ // Executed at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
+ template < class Char >
+ struct deduce_source_char_impl
+ {
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::normalize_single_byte_char< Char >::type type;
+ };
+
+ template < class T >
+ struct deduce_source_char_impl< deduce_character_type_later< T > >
+ {
+ typedef boost::has_left_shift< std::basic_ostream< char >, T > result_t;
+
+#if defined(BOOST_LCAST_NO_WCHAR_T)
+ BOOST_STATIC_ASSERT_MSG((result_t::value),
+ "Source type is not std::ostream`able and std::wostream`s are not supported by your STL implementation");
+ typedef char type;
+#else
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ result_t::value, char, wchar_t
+ >::type type;
+
+ BOOST_STATIC_ASSERT_MSG((result_t::value || boost::has_left_shift< std::basic_ostream< type >, T >::value),
+ "Source type is neither std::ostream`able nor std::wostream`able");
+#endif
+ };
+ }
- template<>
- struct stream_char<char32_t *>
+ namespace detail // deduce_target_char_impl<T>
{
- typedef char32_t type;
- };
+ // If type T is `deduce_character_type_later` type, then tries to deduce
+ // character type using boost::has_right_shift<T> metafunction.
+ // Otherwise supplied type T is a character type, that must be normalized
+ // using normalize_single_byte_char<Char>.
+ // Executed at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
+ template < class Char >
+ struct deduce_target_char_impl
+ {
+ typedef BOOST_DEDUCED_TYPENAME normalize_single_byte_char< Char >::type type;
+ };
+
+ template < class T >
+ struct deduce_target_char_impl< deduce_character_type_later<T> >
+ {
+ typedef boost::has_right_shift<std::basic_istream<char>, T > result_t;
+
+#if defined(BOOST_LCAST_NO_WCHAR_T)
+ BOOST_STATIC_ASSERT_MSG((result_t::value),
+ "Target type is not std::istream`able and std::wistream`s are not supported by your STL implementation");
+ typedef char type;
+#else
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ result_t::value, char, wchar_t
+ >::type type;
+
+ BOOST_STATIC_ASSERT_MSG((result_t::value || boost::has_right_shift<std::basic_istream<wchar_t>, T >::value),
+ "Target type is neither std::istream`able nor std::wistream`able");
+#endif
+ };
+ }
- template<>
- struct stream_char<const char32_t *>
+ namespace detail // deduce_target_char<T> and deduce_source_char<T>
{
- typedef char32_t type;
- };
+ // We deduce stream character types in two stages.
+ //
+ // Stage 1 is common for Target and Source. At Stage 1 we get
+ // non normalized character type (may contain unsigned/signed char)
+ // or deduce_character_type_later<T> where T is the original type.
+ // Stage 1 is executed by stream_char_common<T>
+ //
+ // At Stage 2 we normalize character types or try to deduce character
+ // type using metafunctions.
+ // Stage 2 is executed by deduce_target_char_impl<T> and
+ // deduce_source_char_impl<T>
+ //
+ // deduce_target_char<T> and deduce_source_char<T> functions combine
+ // both stages
-#endif
+ template < class T >
+ struct deduce_target_char
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char_common< T >::type stage1_type;
+ typedef BOOST_DEDUCED_TYPENAME deduce_target_char_impl< stage1_type >::type stage2_type;
- template<typename TargetChar, typename SourceChar>
- struct widest_char
+ typedef stage2_type type;
+ };
+
+ template < class T >
+ struct deduce_source_char
{
- typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
- (sizeof(TargetChar) > sizeof(SourceChar))
- , TargetChar
- , SourceChar >::type type;
+ typedef BOOST_DEDUCED_TYPENAME stream_char_common< T >::type stage1_type;
+ typedef BOOST_DEDUCED_TYPENAME deduce_source_char_impl< stage1_type >::type stage2_type;
+
+ typedef stage2_type type;
};
}
namespace detail // deduce_char_traits template
{
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- template<class CharT, class Target, class Source>
+ // We are attempting to get char_traits<> from Source or Tagret
+ // template parameter. Otherwise we'll be using std::char_traits<Char>
+ template < class Char, class Target, class Source >
struct deduce_char_traits
{
- typedef std::char_traits<CharT> type;
+ typedef std::char_traits< Char > type;
};
- template<class CharT, class Traits, class Alloc, class Source>
- struct deduce_char_traits< CharT
- , std::basic_string<CharT,Traits,Alloc>
+ template < class Char, class Traits, class Alloc, class Source >
+ struct deduce_char_traits< Char
+ , std::basic_string< Char, Traits, Alloc >
, Source
>
{
typedef Traits type;
};
- template<class CharT, class Target, class Traits, class Alloc>
- struct deduce_char_traits< CharT
+ template < class Char, class Target, class Traits, class Alloc >
+ struct deduce_char_traits< Char
, Target
- , std::basic_string<CharT,Traits,Alloc>
+ , std::basic_string< Char, Traits, Alloc >
>
{
typedef Traits type;
};
-#if !defined(__SUNPRO_CC)
- template<class CharT, class Traits, class Alloc, class Source>
- struct deduce_char_traits< CharT
- , ::boost::container::basic_string<CharT,Traits,Alloc>
+ template < class Char, class Traits, class Alloc, class Source >
+ struct deduce_char_traits< Char
+ , boost::container::basic_string< Char, Traits, Alloc >
, Source
>
{
typedef Traits type;
};
- template<class CharT, class Target, class Traits, class Alloc>
- struct deduce_char_traits< CharT
+ template < class Char, class Target, class Traits, class Alloc >
+ struct deduce_char_traits< Char
, Target
- , ::boost::container::basic_string<CharT,Traits,Alloc>
+ , boost::container::basic_string< Char, Traits, Alloc >
>
{
typedef Traits type;
};
- template<class CharT, class Traits, class Alloc1, class Alloc2>
- struct deduce_char_traits< CharT
- , std::basic_string<CharT,Traits,Alloc1>
- , std::basic_string<CharT,Traits,Alloc2>
+ template < class Char, class Traits, class Alloc1, class Alloc2 >
+ struct deduce_char_traits< Char
+ , std::basic_string< Char, Traits, Alloc1 >
+ , std::basic_string< Char, Traits, Alloc2 >
>
{
typedef Traits type;
};
- template<class CharT, class Traits, class Alloc1, class Alloc2>
- struct deduce_char_traits< CharT
- , ::boost::container::basic_string<CharT,Traits,Alloc1>
- , ::boost::container::basic_string<CharT,Traits,Alloc2>
+ template<class Char, class Traits, class Alloc1, class Alloc2>
+ struct deduce_char_traits< Char
+ , boost::container::basic_string< Char, Traits, Alloc1 >
+ , boost::container::basic_string< Char, Traits, Alloc2 >
>
{
typedef Traits type;
};
- template<class CharT, class Traits, class Alloc1, class Alloc2>
- struct deduce_char_traits< CharT
- , ::boost::container::basic_string<CharT,Traits,Alloc1>
- , std::basic_string<CharT,Traits,Alloc2>
+ template < class Char, class Traits, class Alloc1, class Alloc2 >
+ struct deduce_char_traits< Char
+ , boost::container::basic_string< Char, Traits, Alloc1 >
+ , std::basic_string< Char, Traits, Alloc2 >
>
{
typedef Traits type;
};
- template<class CharT, class Traits, class Alloc1, class Alloc2>
- struct deduce_char_traits< CharT
- , std::basic_string<CharT,Traits,Alloc1>
- , ::boost::container::basic_string<CharT,Traits,Alloc2>
+ template < class Char, class Traits, class Alloc1, class Alloc2 >
+ struct deduce_char_traits< Char
+ , std::basic_string< Char, Traits, Alloc1 >
+ , boost::container::basic_string< Char, Traits, Alloc2 >
>
{
typedef Traits type;
};
-#endif // !defined(__SUNPRO_CC)
-#endif
}
+ namespace detail // array_to_pointer_decay<T>
+ {
+ template<class T>
+ struct array_to_pointer_decay
+ {
+ typedef T type;
+ };
+
+ template<class T, std::size_t N>
+ struct array_to_pointer_decay<T[N]>
+ {
+ typedef const T * type;
+ };
+ }
+
+ namespace detail // is_this_float_conversion_optimized<Float, Char>
+ {
+ // this metafunction evaluates to true, if we have optimized comnversion
+ // from Float type to Char array.
+ // Must be in sync with lexical_stream_limited_src<Char, ...>::shl_real_type(...)
+ template <typename Float, typename Char>
+ struct is_this_float_conversion_optimized
+ {
+ typedef boost::type_traits::ice_and<
+ boost::is_float<Float>::value,
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+ boost::type_traits::ice_or<
+ boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value,
+ boost::is_same<Char, wchar_t>::value
+ >::value
+#else
+ boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value
+#endif
+ > result_type;
+
+ BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+ };
+ }
+
namespace detail // lcast_src_length
{
// Return max. length of string representation of Source;
BOOST_STATIC_ASSERT(sizeof(Source) * CHAR_BIT <= 256);
#endif
};
-// TODO: FIX for char16_t, char32_t, we can ignore CharT
+
#define BOOST_LCAST_DEF(T) \
template<> struct lcast_src_length<T> \
: lcast_src_length_integral<T> \
BOOST_LCAST_DEF(unsigned __int64)
BOOST_LCAST_DEF( __int64)
#endif
+#ifdef BOOST_HAS_INT128
+ BOOST_LCAST_DEF(boost::int128_type)
+ BOOST_LCAST_DEF(boost::uint128_type)
+#endif
#undef BOOST_LCAST_DEF
#endif // #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
}
+ namespace detail // lexical_cast_stream_traits<Source, Target>
+ {
+ template <class Source, class Target>
+ struct lexical_cast_stream_traits {
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::array_to_pointer_decay<Source>::type src;
+ typedef BOOST_DEDUCED_TYPENAME boost::remove_cv<src>::type no_cv_src;
+
+ typedef boost::detail::deduce_source_char<no_cv_src> deduce_src_char_metafunc;
+ typedef BOOST_DEDUCED_TYPENAME deduce_src_char_metafunc::type src_char_t;
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::deduce_target_char<Target>::type target_char_t;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::widest_char<
+ target_char_t, src_char_t
+ >::type char_type;
+
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+ BOOST_STATIC_ASSERT_MSG(( !boost::is_same<char16_t, src_char_t>::value
+ && !boost::is_same<char16_t, target_char_t>::value),
+ "Your compiler does not have full support for char16_t" );
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+ BOOST_STATIC_ASSERT_MSG(( !boost::is_same<char32_t, src_char_t>::value
+ && !boost::is_same<char32_t, target_char_t>::value),
+ "Your compiler does not have full support for char32_t" );
+#endif
+
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::deduce_char_traits<
+ char_type, Target, no_cv_src
+ >::type traits;
+
+ typedef boost::type_traits::ice_and<
+ boost::is_same<char, src_char_t>::value, // source is not a wide character based type
+ boost::type_traits::ice_ne<sizeof(char), sizeof(target_char_t) >::value, // target type is based on wide character
+ boost::type_traits::ice_not<
+ boost::detail::is_char_or_wchar<no_cv_src>::value // single character widening is optimized
+ >::value // and does not requires stringbuffer
+ > is_string_widening_required_t;
+
+ typedef boost::type_traits::ice_not< boost::type_traits::ice_or<
+ boost::is_integral<no_cv_src>::value,
+ boost::detail::is_this_float_conversion_optimized<no_cv_src, char_type >::value,
+ boost::detail::is_char_or_wchar<
+ BOOST_DEDUCED_TYPENAME deduce_src_char_metafunc::stage1_type // if we did not get character type at stage1
+ >::value // then we have no optimization for that type
+ >::value > is_source_input_not_optimized_t;
+
+ // If we have an optimized conversion for
+ // Source, we do not need to construct stringbuf.
+ BOOST_STATIC_CONSTANT(bool, requires_stringbuf =
+ (boost::type_traits::ice_or<
+ is_string_widening_required_t::value, is_source_input_not_optimized_t::value
+ >::value)
+ );
+
+ typedef boost::detail::lcast_src_length<no_cv_src> len_t;
+ };
+ }
+
namespace detail // '0', '+' and '-' constants
{
- template<typename CharT> struct lcast_char_constants;
+ template < typename Char > struct lcast_char_constants;
template<>
struct lcast_char_constants<char>
};
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template<>
struct lcast_char_constants<char16_t>
{
};
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template<>
struct lcast_char_constants<char32_t>
{
namespace detail // lcast_to_unsigned
{
-#if (defined _MSC_VER)
-# pragma warning( push )
-// C4146: unary minus operator applied to unsigned type, result still unsigned
-# pragma warning( disable : 4146 )
-#elif defined( __BORLANDC__ )
-# pragma option push -w-8041
-#endif
template<class T>
inline
- BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value)
+ BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value) BOOST_NOEXCEPT
{
- typedef BOOST_DEDUCED_TYPENAME make_unsigned<T>::type result_type;
- result_type uvalue = static_cast<result_type>(value);
- return value < 0 ? -uvalue : uvalue;
+ typedef BOOST_DEDUCED_TYPENAME boost::make_unsigned<T>::type result_type;
+ return static_cast<result_type>(
+ value < 0 ? 0u - static_cast<result_type>(value) : value
+ );
}
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#elif defined( __BORLANDC__ )
-# pragma option pop
-#endif
}
namespace detail // lcast_put_unsigned
if(group < grouping_size)
{
char const grp_size = grouping[group];
- last_grp_size = grp_size <= 0 ? CHAR_MAX : grp_size;
+ last_grp_size = grp_size <= 0 ? static_cast<char>(CHAR_MAX) : grp_size;
}
left = last_grp_size;
{
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+
+ // GCC when used with flag -std=c++0x may not have std::numeric_limits
+ // specializations for __int128 and unsigned __int128 types.
+ // Try compilation with -std=gnu++0x or -std=gnu++11.
+ //
+ // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40856
+ BOOST_STATIC_ASSERT_MSG(std::numeric_limits<T>::is_specialized,
+ "std::numeric_limits are not specialized for integral type passed to boost::lexical_cast"
+ );
#endif
- typedef typename Traits::int_type int_type;
CharT const czero = lcast_char_constants<CharT>::zero;
--end;
value = 0;
if (begin > end || *end < czero || *end >= czero + 10)
return false;
- value = *end - czero;
+ value = static_cast<T>(*end - czero);
--end;
T multiplier = 1;
bool multiplier_overflowed = false;
{
unsigned char current_grouping = 0;
CharT const thousands_sep = np.thousands_sep();
- char remained = grouping[current_grouping] - 1;
+ char remained = static_cast<char>(grouping[current_grouping] - 1);
bool shall_we_return = true;
for(;end>=begin; --end)
{
if (remained) {
- T const multiplier_10 = multiplier * 10;
+ T const multiplier_10 = static_cast<T>(multiplier * 10);
if (multiplier_10 / 10 != multiplier) multiplier_overflowed = true;
- T const dig_value = *end - czero;
- T const new_sub_value = multiplier_10 * dig_value;
+ T const dig_value = static_cast<T>(*end - czero);
+ T const new_sub_value = static_cast<T>(multiplier_10 * dig_value);
if (*end < czero || *end >= czero + 10
/* detecting overflow */
)
return false;
- value += new_sub_value;
- multiplier *= 10;
+ value = static_cast<T>(value + new_sub_value);
+ multiplier = static_cast<T>(multiplier * 10);
--remained;
} else {
if ( !Traits::eq(*end, thousands_sep) ) //|| begin == end ) return false;
{
while ( begin <= end )
{
- T const multiplier_10 = multiplier * 10;
+ T const multiplier_10 = static_cast<T>(multiplier * 10);
if (multiplier_10 / 10 != multiplier) multiplier_overflowed = true;
- T const dig_value = *end - czero;
- T const new_sub_value = multiplier_10 * dig_value;
+ T const dig_value = static_cast<T>(*end - czero);
+ T const new_sub_value = static_cast<T>(multiplier_10 * dig_value);
if (*end < czero || *end >= czero + 10
/* detecting overflow */
)
return false;
- value += new_sub_value;
- multiplier *= 10;
+ value = static_cast<T>(value + new_sub_value);
+ multiplier = static_cast<T>(multiplier * 10);
--end;
}
}
namespace detail
{
+ template <class CharT>
+ bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) BOOST_NOEXCEPT {
+ for( unsigned int i=0; i < len; ++i ) {
+ if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false;
+ }
+
+ return true;
+ }
+
/* Returns true and sets the correct value if found NaN or Inf. */
template <class CharT, class T>
inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value
, const CharT* lc_NAN, const CharT* lc_nan
, const CharT* lc_INFINITY, const CharT* lc_infinity
- , const CharT opening_brace, const CharT closing_brace)
+ , const CharT opening_brace, const CharT closing_brace) BOOST_NOEXCEPT
{
using namespace std;
if (begin == end) return false;
else if( *begin == plus ) ++begin;
if( end-begin < 3 ) return false;
- if( !memcmp(begin, lc_nan, 3*sizeof(CharT)) || !memcmp(begin, lc_NAN, 3*sizeof(CharT)) )
+ if( lc_iequal(begin, lc_nan, lc_NAN, 3) )
{
begin += 3;
if (end != begin) /* It is 'nan(...)' or some bad input*/
if (( /* 'INF' or 'inf' */
end-begin==3
&&
- (!memcmp(begin, lc_infinity, 3*sizeof(CharT)) || !memcmp(begin, lc_INFINITY, 3*sizeof(CharT)))
+ lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
)
||
( /* 'INFINITY' or 'infinity' */
end-begin==inifinity_size
&&
- (!memcmp(begin, lc_infinity, inifinity_size)|| !memcmp(begin, lc_INFINITY, inifinity_size))
+ lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
)
)
{
return false;
}
+ template <class CharT, class T>
+ bool put_inf_nan_impl(CharT* begin, CharT*& end, const T& value
+ , const CharT* lc_nan
+ , const CharT* lc_infinity) BOOST_NOEXCEPT
+ {
+ using namespace std;
+ const CharT minus = lcast_char_constants<CharT>::minus;
+ if ( (boost::math::isnan)(value) )
+ {
+ if ( (boost::math::signbit)(value) )
+ {
+ *begin = minus;
+ ++ begin;
+ }
+
+ memcpy(begin, lc_nan, 3 * sizeof(CharT));
+ end = begin + 3;
+ return true;
+ } else if ( (boost::math::isinf)(value) )
+ {
+ if ( (boost::math::signbit)(value) )
+ {
+ *begin = minus;
+ ++ begin;
+ }
+
+ memcpy(begin, lc_infinity, 3 * sizeof(CharT));
+ end = begin + 3;
+ return true;
+ }
+
+ return false;
+ }
+
+
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
- bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value)
+ bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value) BOOST_NOEXCEPT
{
return parse_inf_nan_impl(begin, end, value
, L"NAN", L"nan"
, L"INFINITY", L"infinity"
, L'(', L')');
}
+
+ template <class T>
+ bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value) BOOST_NOEXCEPT
+ {
+ return put_inf_nan_impl(begin, end, value, L"nan", L"infinity");
+ }
+
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template <class T>
- bool parse_inf_nan(const char16_t* begin, const char16_t* end, T& value)
+ bool parse_inf_nan(const char16_t* begin, const char16_t* end, T& value) BOOST_NOEXCEPT
{
return parse_inf_nan_impl(begin, end, value
, u"NAN", u"nan"
, u"INFINITY", u"infinity"
, u'(', u')');
}
+
+ template <class T>
+ bool put_inf_nan(char16_t* begin, char16_t*& end, const T& value) BOOST_NOEXCEPT
+ {
+ return put_inf_nan_impl(begin, end, value, u"nan", u"infinity");
+ }
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
template <class T>
- bool parse_inf_nan(const char32_t* begin, const char32_t* end, T& value)
+ bool parse_inf_nan(const char32_t* begin, const char32_t* end, T& value) BOOST_NOEXCEPT
{
return parse_inf_nan_impl(begin, end, value
, U"NAN", U"nan"
, U"INFINITY", U"infinity"
, U'(', U')');
}
+
+ template <class T>
+ bool put_inf_nan(char32_t* begin, char32_t*& end, const T& value) BOOST_NOEXCEPT
+ {
+ return put_inf_nan_impl(begin, end, value, U"nan", U"infinity");
+ }
#endif
template <class CharT, class T>
- bool parse_inf_nan(const CharT* begin, const CharT* end, T& value)
+ bool parse_inf_nan(const CharT* begin, const CharT* end, T& value) BOOST_NOEXCEPT
{
return parse_inf_nan_impl(begin, end, value
, "NAN", "nan"
, "INFINITY", "infinity"
, '(', ')');
}
-#ifndef BOOST_LCAST_NO_WCHAR_T
- template <class T>
- bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value)
- {
- using namespace std;
- if ( (boost::math::isnan)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,L"-nan", sizeof(L"-nan"));
- end = begin + 4;
- } else
- {
- memcpy(begin,L"nan", sizeof(L"nan"));
- end = begin + 3;
- }
- return true;
- } else if ( (boost::math::isinf)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,L"-inf", sizeof(L"-inf"));
- end = begin + 4;
- } else
- {
- memcpy(begin,L"inf", sizeof(L"inf"));
- end = begin + 3;
- }
- return true;
- }
- return false;
- }
-#endif
template <class CharT, class T>
- bool put_inf_nan(CharT* begin, CharT*& end, const T& value)
+ bool put_inf_nan(CharT* begin, CharT*& end, const T& value) BOOST_NOEXCEPT
{
- using namespace std;
- if ( (boost::math::isnan)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,"-nan", sizeof("-nan"));
- end = begin + 4;
- } else
- {
- memcpy(begin,"nan", sizeof("nan"));
- end = begin + 3;
- }
- return true;
- } else if ( (boost::math::isinf)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,"-inf", sizeof("-inf"));
- end = begin + 4;
- } else
- {
- memcpy(begin,"inf", sizeof("inf"));
- end = begin + 3;
- }
- return true;
- }
-
- return false;
+ return put_inf_nan_impl(begin, end, value, "nan", "infinity");
}
-
}
namespace detail // lcast_ret_float
{
+
+// Silence buggy MS warnings like C4244: '+=' : conversion from 'int' to 'unsigned short', possible loss of data
+#if defined(_MSC_VER) && (_MSC_VER == 1400)
+# pragma warning(push)
+# pragma warning(disable:4244)
+#endif
template <class T>
struct mantissa_holder_type
{
struct mantissa_holder_type<float>
{
typedef unsigned int type;
+ typedef double wide_result_t;
};
template <>
struct mantissa_holder_type<double>
{
+#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+ typedef long double wide_result_t;
#if defined(BOOST_HAS_LONG_LONG)
typedef boost::ulong_long_type type;
#elif defined(BOOST_HAS_MS_INT64)
typedef unsigned __int64 type;
+#endif
#endif
};
: np.grouping()
);
std::string::size_type const grouping_size = grouping.size();
- CharT const thousands_sep = grouping_size ? np.thousands_sep() : 0;
+ CharT const thousands_sep = static_cast<CharT>(grouping_size ? np.thousands_sep() : 0);
CharT const decimal_point = np.decimal_point();
bool found_grouping = false;
std::string::size_type last_grouping_pos = grouping_size - 1;
CharT const capital_e = lcast_char_constants<CharT>::capital_e;
CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
- value = 0.0;
+ value = static_cast<T>(0);
if (parse_inf_nan(begin, end, value)) return true;
typedef typename Traits::int_type int_type;
typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::type mantissa_type;
+ typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::wide_result_t wide_result_t;
int_type const zero = Traits::to_int_type(czero);
if (begin == end) return false;
/* Getting the plus/minus sign */
bool has_minus = false;
- if ( *begin == minus ) {
+ if (Traits::eq(*begin, minus) ) {
++ begin;
has_minus = true;
if (begin == end) return false;
- } else if ( *begin == plus ) {
+ } else if (Traits::eq(*begin, plus) ) {
++begin;
if (begin == end) return false;
}
/* We allow no thousand_separators after decimal point */
mantissa_type tmp_mantissa = mantissa * 10u;
- if ( *begin == lowercase_e || *begin == capital_e ) break;
+ if (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) break;
if ( *begin < czero || *begin >= czero + 10 ) return false;
if ( is_mantissa_full
|| tmp_mantissa / 10u != mantissa
found_number_before_exp = true;
++ length_since_last_delim;
- } else if ( *begin == decimal_point || *begin == lowercase_e || *begin == capital_e) {
+ } else if (Traits::eq(*begin, decimal_point) || Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) {
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
/* If ( we need to check grouping
* and ( grouping missmatches
) return false;
#endif
- if(*begin == decimal_point){
+ if(Traits::eq(*begin, decimal_point)) {
++ begin;
found_decimal = true;
+ if (!found_number_before_exp && begin==end) return false;
continue;
}else {
if (!found_number_before_exp) return false;
}
}
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
- else if (grouping_size && *begin == thousands_sep){
+ else if (grouping_size && Traits::eq(*begin, thousands_sep)){
if(found_grouping)
{
/* It is not he first time, when we find thousands separator,
}
// Exponent found
- if ( begin != end && ( *begin == lowercase_e || *begin == capital_e ) ) {
+ if ( begin != end && (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) ) {
++ begin;
if ( begin == end ) return false;
bool exp_has_minus = false;
- if( *begin == minus ) {
+ if(Traits::eq(*begin, minus)) {
exp_has_minus = true;
++ begin;
if ( begin == end ) return false;
- } else if (*begin == plus ) {
+ } else if (Traits::eq(*begin, plus)) {
++ begin;
if ( begin == end ) return false;
}
/* We need a more accurate algorithm... We can not use current algorithm
* with long doubles (and with doubles if sizeof(double)==sizeof(long double)).
*/
- long double result = std::pow(10.0L, pow_of_10) * mantissa;
+ const wide_result_t result = std::pow(static_cast<wide_result_t>(10.0), pow_of_10) * mantissa;
value = static_cast<T>( has_minus ? (boost::math::changesign)(result) : result);
if ( (boost::math::isinf)(value) || (boost::math::isnan)(value) ) return false;
return true;
}
+// Unsilence buggy MS warnings like C4244: '+=' : conversion from 'int' to 'unsigned short', possible loss of data
+#if defined(_MSC_VER) && (_MSC_VER == 1400)
+# pragma warning(pop)
+#endif
}
- namespace detail // stl_buf_unlocker
+ namespace detail // parser_buf
{
- template< class BufferType, class CharT >
- class stl_buf_unlocker: public BufferType{
+ //
+ // class parser_buf:
+ // acts as a stream buffer which wraps around a pair of pointers
+ //
+ // This class is copied (and slightly changed) from
+ // boost/regex/v4/cpp_regex_traits.hpp
+ // Thanks John Maddock for it! (previous version had some
+ // problems with libc++ and some other STL implementations)
+ template <class BufferType, class charT>
+ class parser_buf : public BufferType {
+ typedef BufferType base_type;
+ typedef typename base_type::int_type int_type;
+ typedef typename base_type::char_type char_type;
+ typedef typename base_type::pos_type pos_type;
+ typedef ::std::streamsize streamsize;
+ typedef typename base_type::off_type off_type;
+
public:
- typedef BufferType base_class;
+ parser_buf() : base_type() { setbuf(0, 0); }
+ const charT* getnext() { return this->gptr(); }
#ifndef BOOST_NO_USING_TEMPLATE
- using base_class::pptr;
- using base_class::pbase;
- using base_class::setg;
- using base_class::setp;
+ using base_type::pptr;
+ using base_type::pbase;
#else
- CharT* pptr() const { return base_class::pptr(); }
- CharT* pbase() const { return base_class::pbase(); }
- void setg(CharT* gbeg, CharT* gnext, CharT* gend){ return base_class::setg(gbeg, gnext, gend); }
- void setp(CharT* pbeg, CharT* pend) { return setp(pbeg, pend); }
+ charT* pptr() const { return base_type::pptr(); }
+ charT* pbase() const { return base_type::pbase(); }
+#endif
+ base_type* setbuf(char_type* s, streamsize n) {
+ this->setg(s, s, s + n);
+ return this;
+ }
+
+ pos_type seekpos(pos_type sp, ::std::ios_base::openmode which) {
+ if(which & ::std::ios_base::out)
+ return pos_type(off_type(-1));
+ off_type size = static_cast<off_type>(this->egptr() - this->eback());
+ charT* g = this->eback();
+ if(off_type(sp) <= size)
+ {
+ this->setg(g, g + off_type(sp), g + size);
+ }
+ return pos_type(off_type(-1));
+ }
+
+ pos_type 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(static_cast<cast_type>(way))
+ {
+ case ::std::ios_base::beg:
+ if((off < 0) || (off > size))
+ return pos_type(off_type(-1));
+ else
+ this->setg(g, g + off, g + size);
+ break;
+ case ::std::ios_base::end:
+ if((off < 0) || (off > size))
+ return pos_type(off_type(-1));
+ else
+ this->setg(g, g + size - off, g + size);
+ break;
+ case ::std::ios_base::cur:
+ {
+ std::ptrdiff_t newpos = static_cast<std::ptrdiff_t>(pos + off);
+ if((newpos < 0) || (newpos > size))
+ return pos_type(off_type(-1));
+ else
+ this->setg(g, g + newpos, g + size);
+ break;
+ }
+ default: ;
+ }
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4244)
+#endif
+ return static_cast<pos_type>(this->gptr() - this->eback());
+#ifdef BOOST_MSVC
+#pragma warning(pop)
#endif
+ }
+ private:
+ parser_buf& operator=(const parser_buf&);
+ parser_buf(const parser_buf&);
};
}
namespace detail
{
- struct do_not_construct_stringbuffer_t{};
+ struct do_not_construct_out_stream_t{};
}
namespace detail // optimized stream wrapper
>
class lexical_stream_limited_src
{
- typedef stl_buf_unlocker<std::basic_streambuf<CharT, Traits>, CharT > local_streambuffer_t;
#if defined(BOOST_NO_STRINGSTREAM)
- typedef stl_buf_unlocker<std::strstream, CharT > local_stringbuffer_t;
+ typedef std::ostrstream out_stream_t;
#elif defined(BOOST_NO_STD_LOCALE)
- typedef stl_buf_unlocker<std::stringstream, CharT > local_stringbuffer_t;
+ typedef std::ostringstream out_stream_t;
+ typedef parser_buf<std::streambuf, char> buffer_t;
#else
- typedef stl_buf_unlocker<std::basic_stringbuf<CharT, Traits>, CharT > local_stringbuffer_t;
+ typedef std::basic_ostringstream<CharT, Traits> out_stream_t;
+ typedef parser_buf<std::basic_streambuf<CharT, Traits>, CharT> buffer_t;
#endif
- typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
RequiresStringbuffer,
- local_stringbuffer_t,
- do_not_construct_stringbuffer_t
- >::type deduced_stringbuffer_t;
+ out_stream_t,
+ do_not_construct_out_stream_t
+ >::type deduced_out_stream_t;
// A string representation of Source is written to [start, finish).
CharT* start;
CharT* finish;
- deduced_stringbuffer_t stringbuffer;
+ deduced_out_stream_t out_stream;
public:
- lexical_stream_limited_src(CharT* sta, CharT* fin)
+ lexical_stream_limited_src(CharT* sta, CharT* fin) BOOST_NOEXCEPT
: start(sta)
, finish(fin)
{}
void operator=(lexical_stream_limited_src const&);
/************************************ HELPER FUNCTIONS FOR OPERATORS << ( ... ) ********************************/
- bool shl_char(CharT ch)
+ bool shl_char(CharT ch) BOOST_NOEXCEPT
{
Traits::assign(*start, ch);
finish = start + 1;
bool shl_char(T ch)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)) ,
- "boost::lexical_cast does not support conversions from whar_t to char types."
+ "boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
std::locale loc;
- wchar_t w = BOOST_USE_FACET(std::ctype<wchar_t>, loc).widen(ch);
+ CharT const w = BOOST_USE_FACET(std::ctype<CharT>, loc).widen(ch);
#else
- wchar_t w = ch;
+ CharT const w = static_cast<CharT>(ch);
#endif
Traits::assign(*start, w);
finish = start + 1;
}
#endif
- bool shl_char_array(CharT const* str)
+ bool shl_char_array(CharT const* str) BOOST_NOEXCEPT
{
start = const_cast<CharT*>(str);
finish = start + Traits::length(str);
return true;
}
-#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
bool shl_char_array(T const* str)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)),
- "boost::lexical_cast does not support conversions from wchar_t to char types."
+ "boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
return shl_input_streamable(str);
}
-#endif
+
+ bool shl_char_array_limited(CharT const* str, std::size_t max_size) BOOST_NOEXCEPT
+ {
+ start = const_cast<CharT*>(str);
+ finish = std::find(start, start + max_size, Traits::to_char_type(0));
+ return true;
+ }
template<typename InputStreamable>
bool shl_input_streamable(InputStreamable& input)
{
- std::basic_ostream<CharT> stream(&stringbuffer);
- bool const result = !(stream << input).fail();
- start = stringbuffer.pbase();
- finish = stringbuffer.pptr();
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
+ // If you have compilation error at this point, than your STL library
+ // does not support such conversions. Try updating it.
+ BOOST_STATIC_ASSERT((boost::is_same<char, CharT>::value));
+#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+ out_stream.exceptions(std::ios::badbit);
+ try {
+#endif
+ bool const result = !(out_stream << input).fail();
+ const buffer_t* const p = static_cast<buffer_t*>(
+ static_cast<std::basic_streambuf<CharT, Traits>*>(out_stream.rdbuf())
+ );
+ start = p->pbase();
+ finish = p->pptr();
return result;
+#ifndef BOOST_NO_EXCEPTIONS
+ } catch (const ::std::ios_base::failure& /*f*/) {
+ return false;
+ }
+#endif
}
template <class T>
return true;
}
-#if (defined _MSC_VER)
-# pragma warning( push )
-// C4996: This function or variable may be unsafe. Consider using sprintf_s instead
-# pragma warning( disable : 4996 )
-#endif
+ template <class T, class SomeCharT>
+ bool shl_real_type(const T& val, SomeCharT* begin, SomeCharT*& end)
+ {
+ if (put_inf_nan(begin, end, val)) return true;
+ lcast_set_precision(out_stream, &val);
+ return shl_input_streamable(val);
+ }
- template <class T>
- bool shl_float(float val,T* out)
+ static bool shl_real_type(float val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*g", static_cast<int>(boost::detail::lcast_get_precision<float >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ const double val_as_double = val;
+ end = begin +
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
+#endif
+ "%.*g", static_cast<int>(boost::detail::lcast_get_precision<float>()), val_as_double);
+ return end > begin;
}
- template <class T>
- bool shl_double(double val,T* out)
+ static bool shl_real_type(double val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*lg", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin +
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
+#endif
+ "%.*g", static_cast<int>(boost::detail::lcast_get_precision<double>()), val);
+ return end > begin;
}
+
#ifndef __MINGW32__
- template <class T>
- bool shl_long_double(long double val,T* out)
+ static bool shl_real_type(long double val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
- return finish > start;
- }
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin +
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
#endif
-
-#if (defined _MSC_VER)
-# pragma warning( pop )
+ "%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double>()), val );
+ return end > begin;
+ }
#endif
-#ifndef BOOST_LCAST_NO_WCHAR_T
- bool shl_float(float val,wchar_t* out)
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+ static bool shl_real_type(float val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + swprintf(out,
-#if !defined(__MINGW32__) && !defined(UNDER_CE)
- finish-start,
-#endif
- L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<float >()), val );
-
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ const double val_as_double = val;
+ end = begin + swprintf(begin, end-begin,
+ L"%.*g",
+ static_cast<int>(boost::detail::lcast_get_precision<float >()),
+ val_as_double );
+ return end > begin;
}
-
- bool shl_double(double val,wchar_t* out)
+ static bool shl_real_type(double val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- /* __MINGW32__ is defined for both mingw.org and for mingw-w64.
- * For mingw-w64, __MINGW64__ is defined, too, when targetting
- * 64 bits.
- *
- * swprintf realization in MinGW and under WinCE does not conform
- * to the ISO C
- * Standard.
- */
- finish = start + swprintf(out,
-#if !defined(__MINGW32__) && !defined(UNDER_CE)
- finish-start,
-#endif
- L"%.*lg", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin + swprintf(begin, end-begin,
+ L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
+ return end > begin;
}
-#ifndef __MINGW32__
- bool shl_long_double(long double val,wchar_t* out)
+ static bool shl_real_type(long double val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + swprintf(out,
-#if !defined(UNDER_CE)
- finish-start,
-#endif
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin + swprintf(begin, end-begin,
L"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
- return finish > start;
+ return end > begin;
}
#endif
-#endif
-
/************************************ OPERATORS << ( ... ) ********************************/
public:
template<class Alloc>
- bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str)
+ bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
{
start = const_cast<CharT*>(str.data());
finish = start + str.length();
return true;
}
-#if !defined(__SUNPRO_CC)
template<class Alloc>
- bool operator<<(::boost::container::basic_string<CharT,Traits,Alloc> const& str)
+ bool operator<<(boost::container::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
{
start = const_cast<CharT*>(str.data());
finish = start + str.length();
return true;
}
-#endif // !defined(__SUNPRO_CC)
- bool operator<<(bool value)
+
+ bool operator<<(bool value) BOOST_NOEXCEPT
{
CharT const czero = lcast_char_constants<CharT>::zero;
Traits::assign(*start, Traits::to_char_type(czero + value));
return true;
}
+ bool operator<<(const iterator_range<CharT*>& rng) BOOST_NOEXCEPT
+ {
+ start = rng.begin();
+ finish = rng.end();
+ return true;
+ }
+
+ bool operator<<(const iterator_range<const CharT*>& rng) BOOST_NOEXCEPT
+ {
+ start = const_cast<CharT*>(rng.begin());
+ finish = const_cast<CharT*>(rng.end());
+ return true;
+ }
+
+ bool operator<<(const iterator_range<const signed char*>& rng) BOOST_NOEXCEPT
+ {
+ return (*this) << iterator_range<char*>(
+ const_cast<char*>(reinterpret_cast<const char*>(rng.begin())),
+ const_cast<char*>(reinterpret_cast<const char*>(rng.end()))
+ );
+ }
+
+ bool operator<<(const iterator_range<const unsigned char*>& rng) BOOST_NOEXCEPT
+ {
+ return (*this) << iterator_range<char*>(
+ const_cast<char*>(reinterpret_cast<const char*>(rng.begin())),
+ const_cast<char*>(reinterpret_cast<const char*>(rng.end()))
+ );
+ }
+
+ bool operator<<(const iterator_range<signed char*>& rng) BOOST_NOEXCEPT
+ {
+ return (*this) << iterator_range<char*>(
+ reinterpret_cast<char*>(rng.begin()),
+ reinterpret_cast<char*>(rng.end())
+ );
+ }
+
+ bool operator<<(const iterator_range<unsigned char*>& rng) BOOST_NOEXCEPT
+ {
+ return (*this) << iterator_range<char*>(
+ reinterpret_cast<char*>(rng.begin()),
+ reinterpret_cast<char*>(rng.end())
+ );
+ }
+
bool operator<<(char ch) { return shl_char(ch); }
bool operator<<(unsigned char ch) { return ((*this) << static_cast<char>(ch)); }
bool operator<<(signed char ch) { return ((*this) << static_cast<char>(ch)); }
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
bool operator<<(wchar_t ch) { return shl_char(ch); }
#endif
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+ bool operator<<(char16_t ch) { return shl_char(ch); }
+ bool operator<<(char16_t * str) { return shl_char_array(str); }
+ bool operator<<(char16_t const * str) { return shl_char_array(str); }
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+ bool operator<<(char32_t ch) { return shl_char(ch); }
+ bool operator<<(char32_t * str) { return shl_char_array(str); }
+ bool operator<<(char32_t const * str) { return shl_char_array(str); }
#endif
bool operator<<(unsigned char const* ch) { return ((*this) << reinterpret_cast<char const*>(ch)); }
bool operator<<(unsigned char * ch) { return ((*this) << reinterpret_cast<char *>(ch)); }
bool operator<<(unsigned __int64 n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
bool operator<<( __int64 n) { return shl_signed(n); }
#endif
- bool operator<<(float val) { return shl_float(val,start); }
- bool operator<<(double val) { return shl_double(val,start); }
+
+#ifdef BOOST_HAS_INT128
+ bool operator<<(const boost::uint128_type& n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+ bool operator<<(const boost::int128_type& n) { return shl_signed(n); }
+#endif
+
+ bool operator<<(float val) { return shl_real_type(val, start, finish); }
+ bool operator<<(double val) { return shl_real_type(val, start, finish); }
bool operator<<(long double val) {
#ifndef __MINGW32__
- return shl_long_double(val,start);
+ return shl_real_type(val, start, finish);
#else
- return shl_double(val,start);
+ return shl_real_type(static_cast<double>(val), start, finish);
#endif
}
+
+ template <std::size_t N>
+ bool operator<<(boost::array<CharT, N> const& input) BOOST_NOEXCEPT
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<unsigned char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<signed char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<const CharT, N> const& input) BOOST_NOEXCEPT
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<const unsigned char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<const signed char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+ template <std::size_t N>
+ bool operator<<(std::array<CharT, N> const& input) BOOST_NOEXCEPT
+ {
+ if (input.size()) return shl_char_array_limited(&input[0], N);
+ else return true;
+ }
+
+ template <std::size_t N>
+ bool operator<<(std::array<unsigned char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<signed char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<const CharT, N> const& input) BOOST_NOEXCEPT
+ {
+ if (input.size()) return shl_char_array_limited(&input[0], N);
+ else return true;
+ }
+
+ template <std::size_t N>
+ bool operator<<(std::array<const unsigned char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
- template<class InStreamable>
+ template <std::size_t N>
+ bool operator<<(std::array<const signed char, N> const& input) BOOST_NOEXCEPT
+ { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+#endif
+
+ template <class InStreamable>
bool operator<<(const InStreamable& input) { return shl_input_streamable(input); }
/************************************ HELPER FUNCTIONS FOR OPERATORS >> ( ... ) ********************************/
}
bool const succeed = lcast_ret_unsigned<Traits>(output, start, finish);
-#if (defined _MSC_VER)
-# pragma warning( push )
-// C4146: unary minus operator applied to unsigned type, result still unsigned
-# pragma warning( disable : 4146 )
-#elif defined( __BORLANDC__ )
-# pragma option push -w-8041
-#endif
- if (has_minus) output = static_cast<Type>(-output);
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#elif defined( __BORLANDC__ )
-# pragma option pop
-#endif
+
+ if (has_minus) {
+ output = static_cast<Type>(0u - output);
+ }
+
return succeed;
}
bool succeed = lcast_ret_unsigned<Traits>(out_tmp, start, finish);
if (has_minus) {
-#if (defined _MSC_VER)
-# pragma warning( push )
-// C4146: unary minus operator applied to unsigned type, result still unsigned
-# pragma warning( disable : 4146 )
-#elif defined( __BORLANDC__ )
-# pragma option push -w-8041
-#endif
- utype const comp_val = static_cast<utype>(-(std::numeric_limits<Type>::min)());
+ utype const comp_val = (static_cast<utype>(1) << std::numeric_limits<Type>::digits);
succeed = succeed && out_tmp<=comp_val;
- output = -out_tmp;
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#elif defined( __BORLANDC__ )
-# pragma option pop
-#endif
+ output = static_cast<Type>(0u - out_tmp);
} else {
utype const comp_val = static_cast<utype>((std::numeric_limits<Type>::max)());
succeed = succeed && out_tmp<=comp_val;
template<typename InputStreamable>
bool shr_using_base_class(InputStreamable& output)
{
-#if (defined _MSC_VER)
-# pragma warning( push )
- // conditional expression is constant
-# pragma warning( disable : 4127 )
+ BOOST_STATIC_ASSERT_MSG(
+ (!boost::is_pointer<InputStreamable>::value),
+ "boost::lexical_cast can not convert to pointers"
+ );
+
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
+ BOOST_STATIC_ASSERT_MSG((boost::is_same<char, CharT>::value),
+ "boost::lexical_cast can not convert, because your STL library does not "
+ "support such conversions. Try updating it."
+ );
#endif
- if(is_pointer<InputStreamable>::value)
- return false;
- local_streambuffer_t bb;
- bb.setg(start, start, finish);
- std::basic_istream<CharT> stream(&bb);
+#if defined(BOOST_NO_STRINGSTREAM)
+ std::istrstream stream(start, finish - start);
+#else
+
+ buffer_t buf;
+ buf.setbuf(start, finish - start);
+#if defined(BOOST_NO_STD_LOCALE)
+ std::istream stream(&buf);
+#else
+ std::basic_istream<CharT, Traits> stream(&buf);
+#endif // BOOST_NO_STD_LOCALE
+#endif // BOOST_NO_STRINGSTREAM
+
+#ifndef BOOST_NO_EXCEPTIONS
+ stream.exceptions(std::ios::badbit);
+ try {
+#endif
stream.unsetf(std::ios::skipws);
lcast_set_precision(stream, static_cast<InputStreamable*>(0));
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#endif
+
return stream >> output &&
stream.get() ==
#if defined(__GNUC__) && (__GNUC__<3) && defined(BOOST_NO_STD_WSTRING)
#else
Traits::eof();
#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+ } catch (const ::std::ios_base::failure& /*f*/) {
+ return false;
+ }
+#endif
}
template<class T>
inline bool shr_xchar(T& output)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(CharT) == sizeof(T) ),
- "boost::lexical_cast does not support conversions from whar_t to char types."
+ "boost::lexical_cast does not support narrowing of character types."
"Use boost::locale instead" );
bool const ok = (finish - start == 1);
- if(ok) {
+ if (ok) {
CharT out;
Traits::assign(out, *start);
output = static_cast<T>(out);
}
/************************************ OPERATORS >> ( ... ) ********************************/
- public:
+ public:
bool operator>>(unsigned short& output) { return shr_unsigned(output); }
bool operator>>(unsigned int& output) { return shr_unsigned(output); }
bool operator>>(unsigned long int& output) { return shr_unsigned(output); }
bool operator>>(unsigned __int64& output) { return shr_unsigned(output); }
bool operator>>(__int64& output) { return shr_signed(output); }
#endif
+
+#ifdef BOOST_HAS_INT128
+ bool operator>>(boost::uint128_type& output) { return shr_unsigned(output); }
+ bool operator>>(boost::int128_type& output) { return shr_signed(output); }
+#endif
+
bool operator>>(char& output) { return shr_xchar(output); }
bool operator>>(unsigned char& output) { return shr_xchar(output); }
bool operator>>(signed char& output) { return shr_xchar(output); }
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
bool operator>>(wchar_t& output) { return shr_xchar(output); }
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool operator>>(char16_t& output) { return shr_xchar(output); }
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool operator>>(char32_t& output) { return shr_xchar(output); }
#endif
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- bool operator>>(std::string& str) { str.assign(start, finish); return true; }
-# ifndef BOOST_LCAST_NO_WCHAR_T
- bool operator>>(std::wstring& str) { str.assign(start, finish); return true; }
-# endif
-#else
template<class Alloc>
bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
-#if !defined(__SUNPRO_CC)
+
template<class Alloc>
- bool operator>>(::boost::container::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
-#endif // !defined(__SUNPRO_CC)
+ bool operator>>(boost::container::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
+
+
+ private:
+ template <std::size_t N, class ArrayT>
+ bool shr_std_array(ArrayT& output) BOOST_NOEXCEPT
+ {
+ using namespace std;
+ const std::size_t size = finish - start;
+ if (size > N - 1) { // `-1` because we need to store \0 at the end
+ return false;
+ }
+
+ memcpy(&output[0], start, size * sizeof(CharT));
+ output[size] = Traits::to_char_type(0);
+ return true;
+ }
+
+ public:
+
+ template <std::size_t N>
+ bool operator>>(boost::array<CharT, N>& output) BOOST_NOEXCEPT
+ {
+ return shr_std_array<N>(output);
+ }
+
+ template <std::size_t N>
+ bool operator>>(boost::array<unsigned char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
+ }
+
+ template <std::size_t N>
+ bool operator>>(boost::array<signed char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
+ }
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+ template <std::size_t N>
+ bool operator>>(std::array<CharT, N>& output) BOOST_NOEXCEPT
+ {
+ return shr_std_array<N>(output);
+ }
+
+ template <std::size_t N>
+ bool operator>>(std::array<unsigned char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<std::array<char, N>& >(output));
+ }
+
+ template <std::size_t N>
+ bool operator>>(std::array<signed char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<std::array<char, N>& >(output));
+ }
#endif
+
+
/*
* case "-0" || "0" || "+0" : output = false; return true;
* case "1" || "+1": output = true; return true;
* default: return false;
*/
- bool operator>>(bool& output)
+ bool operator>>(bool& output) BOOST_NOEXCEPT
{
CharT const zero = lcast_char_constants<CharT>::zero;
CharT const plus = lcast_char_constants<CharT>::plus;
CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
if ( return_value &&
(
- *(finish-1) == lowercase_e // 1.0e
- || *(finish-1) == capital_e // 1.0E
- || *(finish-1) == minus // 1.0e- or 1.0E-
- || *(finish-1) == plus // 1.0e+ or 1.0E+
+ Traits::eq(*(finish-1), lowercase_e) // 1.0e
+ || Traits::eq(*(finish-1), capital_e) // 1.0E
+ || Traits::eq(*(finish-1), minus) // 1.0e- or 1.0E-
+ || Traits::eq(*(finish-1), plus) // 1.0e+ or 1.0E+
)
) return false;
* double, because it will give a big precision loss.
* */
boost::mpl::if_c<
-#if defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)
- ::boost::type_traits::ice_eq< sizeof(double), sizeof(long double) >::value,
+#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) && !defined(BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS)
+ boost::type_traits::ice_eq< sizeof(double), sizeof(long double) >::value,
#else
- 0
+ 1,
#endif
int,
char
};
}
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
- // call-by-const reference version
-
namespace detail
{
- template<class T>
- struct array_to_pointer_decay
- {
- typedef T type;
- };
-
- template<class T, std::size_t N>
- struct array_to_pointer_decay<T[N]>
- {
- typedef const T * type;
- };
-
template<typename T>
struct is_stdstring
{
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#if !defined(__SUNPRO_CC)
+
template<typename CharT, typename Traits, typename Alloc>
- struct is_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc> >
+ struct is_stdstring< boost::container::basic_string<CharT, Traits, Alloc> >
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#endif // !defined(__SUNPRO_CC)
- template<typename T>
- struct is_char_or_wchar
- {
- private:
-#ifndef BOOST_LCAST_NO_WCHAR_T
- typedef wchar_t wchar_t_if_supported;
-#else
- typedef char wchar_t_if_supported;
-#endif
-
-#ifndef BOOST_NO_CHAR16_T
- typedef char16_t char16_t_if_supported;
-#else
- typedef char char16_t_if_supported;
-#endif
-
-#ifndef BOOST_NO_CHAR32_T
- typedef char32_t char32_t_if_supported;
-#else
- typedef char char32_t_if_supported;
-#endif
- public:
-
- BOOST_STATIC_CONSTANT(bool, value =
- (
- ::boost::type_traits::ice_or<
- is_same< T, char >::value,
- is_same< T, wchar_t_if_supported >::value,
- is_same< T, char16_t_if_supported >::value,
- is_same< T, char32_t_if_supported >::value,
- is_same< T, unsigned char >::value,
- is_same< T, signed char >::value
- >::value
- )
- );
- };
template<typename Target, typename Source>
struct is_arithmetic_and_not_xchars
{
BOOST_STATIC_CONSTANT(bool, value =
(
- ::boost::type_traits::ice_and<
- is_arithmetic<Source>::value,
- is_arithmetic<Target>::value,
- ::boost::type_traits::ice_not<
+ boost::type_traits::ice_and<
+ boost::is_arithmetic<Source>::value,
+ boost::is_arithmetic<Target>::value,
+ boost::type_traits::ice_not<
detail::is_char_or_wchar<Target>::value
>::value,
- ::boost::type_traits::ice_not<
+ boost::type_traits::ice_not<
detail::is_char_or_wchar<Source>::value
>::value
>::value
{
BOOST_STATIC_CONSTANT(bool, value =
(
- ::boost::type_traits::ice_or<
- ::boost::type_traits::ice_and<
+ boost::type_traits::ice_or<
+ boost::type_traits::ice_and<
is_same<Source,Target>::value,
is_char_or_wchar<Target>::value
>::value,
- ::boost::type_traits::ice_and<
- ::boost::type_traits::ice_eq< sizeof(char),sizeof(Target)>::value,
- ::boost::type_traits::ice_eq< sizeof(char),sizeof(Source)>::value,
+ boost::type_traits::ice_and<
+ boost::type_traits::ice_eq< sizeof(char),sizeof(Target)>::value,
+ boost::type_traits::ice_eq< sizeof(char),sizeof(Source)>::value,
is_char_or_wchar<Target>::value,
is_char_or_wchar<Source>::value
>::value
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#if !defined(__SUNPRO_CC)
+
template<typename CharT, typename Traits, typename Alloc>
- struct is_char_array_to_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
+ struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
template<typename CharT, typename Traits, typename Alloc>
- struct is_char_array_to_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc>, const CharT* >
+ struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, const CharT* >
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#endif // !defined(__SUNPRO_CC)
#if (defined _MSC_VER)
# pragma warning( push )
{
static inline Target lexical_cast_impl(const Source& arg)
{
- typedef BOOST_DEDUCED_TYPENAME detail::array_to_pointer_decay<Source>::type src;
-
- typedef BOOST_DEDUCED_TYPENAME detail::widest_char<
- BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type
- , BOOST_DEDUCED_TYPENAME detail::stream_char<src>::type
- >::type char_type;
-
- typedef detail::lcast_src_length<src> lcast_src_length;
- std::size_t const src_len = lcast_src_length::value;
- char_type buf[src_len + 1];
- lcast_src_length::check_coverage();
-
- typedef BOOST_DEDUCED_TYPENAME
- deduce_char_traits<char_type,Target,Source>::type traits;
-
- typedef BOOST_DEDUCED_TYPENAME remove_pointer<src >::type removed_ptr_t;
-
- // is_char_types_match variable value can be computed via
- // sizeof(char_type) == sizeof(removed_ptr_t). But when
- // removed_ptr_t is an incomplete type or void*, compilers
- // produce warnings or errors.
- const bool is_char_types_match =
- (::boost::type_traits::ice_or<
- ::boost::type_traits::ice_and<
- ::boost::type_traits::ice_eq<sizeof(char_type), sizeof(char) >::value,
- ::boost::type_traits::ice_or<
- ::boost::is_same<char, removed_ptr_t>::value,
- ::boost::is_same<unsigned char, removed_ptr_t>::value,
- ::boost::is_same<signed char, removed_ptr_t>::value
- >::value
- >::value,
- is_same<char_type, removed_ptr_t>::value
- >::value);
-
- const bool requires_stringbuf =
- !(
- ::boost::type_traits::ice_or<
- is_stdstring<src >::value,
- is_arithmetic<src >::value,
- ::boost::type_traits::ice_and<
- is_pointer<src >::value,
- is_char_or_wchar<removed_ptr_t >::value,
- is_char_types_match
- >::value
- >::value
- );
-
- detail::lexical_stream_limited_src<char_type,traits, requires_stringbuf >
- interpreter(buf, buf + src_len);
-
- Target result;
+ typedef lexical_cast_stream_traits<Source, Target> stream_trait;
+
+ typedef detail::lexical_stream_limited_src<
+ BOOST_DEDUCED_TYPENAME stream_trait::char_type,
+ BOOST_DEDUCED_TYPENAME stream_trait::traits,
+ stream_trait::requires_stringbuf
+ > interpreter_type;
+
+ // Target type must be default constructible
+ Target result;
+
+ BOOST_DEDUCED_TYPENAME stream_trait::char_type buf[stream_trait::len_t::value + 1];
+ stream_trait::len_t::check_coverage();
+
+ interpreter_type interpreter(buf, buf + stream_trait::len_t::value + 1);
+
// Disabling ADL, by directly specifying operators.
if(!(interpreter.operator <<(arg) && interpreter.operator >>(result)))
BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+
return result;
}
};
# pragma warning( pop )
#endif
- template<typename Source>
+ template <typename Source>
struct lexical_cast_copy
{
- static inline Source lexical_cast_impl(const Source &arg)
+ static inline const Source& lexical_cast_impl(const Source &arg) BOOST_NOEXCEPT
{
return arg;
}
};
- class precision_loss_error : public boost::numeric::bad_numeric_cast
- {
- public:
- virtual const char * what() const throw()
- { return "bad numeric conversion: precision loss error"; }
- };
-
- template<class S >
- struct throw_on_precision_loss
+ template <class Source, class Target >
+ struct detect_precision_loss
{
- typedef boost::numeric::Trunc<S> Rounder;
- typedef S source_type ;
+ typedef boost::numeric::Trunc<Source> Rounder;
+ typedef Source source_type ;
- typedef typename mpl::if_< is_arithmetic<S>,S,S const&>::type argument_type ;
+ typedef BOOST_DEDUCED_TYPENAME mpl::if_<
+ boost::is_arithmetic<Source>, Source, Source const&
+ >::type argument_type ;
static source_type nearbyint ( argument_type s )
{
- source_type orig_div_round = s / Rounder::nearbyint(s);
+ const source_type near_int = Rounder::nearbyint(s);
+ if (near_int) {
+ const source_type orig_div_round = s / near_int;
+ const source_type eps = std::numeric_limits<source_type>::epsilon();
+
+ if ((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps)
+ BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+ }
- if ( (orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > std::numeric_limits<source_type>::epsilon() )
- BOOST_THROW_EXCEPTION( precision_loss_error() );
return s ;
}
typedef typename Rounder::round_style round_style;
} ;
- template<typename Target, typename Source>
+ template <class Source, class Target >
+ struct nothrow_overflow_handler
+ {
+ void operator() ( boost::numeric::range_check_result r )
+ {
+ if (r != boost::numeric::cInRange)
+ BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+ }
+ } ;
+
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num_not_ignoring_minus
{
static inline Target lexical_cast_impl(const Source &arg)
{
- try{
- typedef boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- boost::numeric::def_overflow_handler,
- throw_on_precision_loss<Source>
- > Converter ;
-
- return Converter::convert(arg);
- } catch( ::boost::numeric::bad_numeric_cast const& ) {
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
- }
- BOOST_UNREACHABLE_RETURN(static_cast<Target>(0));
+ return boost::numeric::converter<
+ Target,
+ Source,
+ boost::numeric::conversion_traits<Target,Source>,
+ nothrow_overflow_handler<Source, Target>,
+ detect_precision_loss<Source, Target>
+ >::convert(arg);
}
};
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num_ignoring_minus
{
static inline Target lexical_cast_impl(const Source &arg)
{
- try{
- typedef boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- boost::numeric::def_overflow_handler,
- throw_on_precision_loss<Source>
- > Converter ;
-
- bool has_minus = ( arg < 0);
- if ( has_minus ) {
- return static_cast<Target>(-Converter::convert(-arg));
- } else {
- return Converter::convert(arg);
- }
- } catch( ::boost::numeric::bad_numeric_cast const& ) {
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
- }
- BOOST_UNREACHABLE_RETURN(static_cast<Target>(0));
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::eval_if_c<
+ boost::is_float<Source>::value,
+ boost::mpl::identity<Source>,
+ boost::make_unsigned<Source>
+ >::type usource_t;
+
+ typedef boost::numeric::converter<
+ Target,
+ usource_t,
+ boost::numeric::conversion_traits<Target,usource_t>,
+ nothrow_overflow_handler<usource_t, Target>,
+ detect_precision_loss<usource_t, Target>
+ > converter_t;
+
+ return (
+ arg < 0 ? static_cast<Target>(0u - converter_t::convert(0u - arg)) : converter_t::convert(arg)
+ );
}
};
* optional, so if a negative number is read, no errors will arise
* and the result will be the two's complement.
*/
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num
{
static inline Target lexical_cast_impl(const Source &arg)
{
- typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
- ::boost::type_traits::ice_and<
- ::boost::type_traits::ice_or<
- ::boost::is_signed<Source>::value,
- ::boost::is_float<Source>::value
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ boost::type_traits::ice_and<
+ boost::type_traits::ice_or<
+ boost::is_signed<Source>::value,
+ boost::is_float<Source>::value
>::value,
- ::boost::type_traits::ice_not<
- is_same<Source, bool>::value
+ boost::type_traits::ice_not<
+ boost::is_same<Source, bool>::value
>::value,
- ::boost::type_traits::ice_not<
- is_same<Target, bool>::value
+ boost::type_traits::ice_not<
+ boost::is_same<Target, bool>::value
>::value,
- ::boost::is_unsigned<Target>::value
+ boost::is_unsigned<Target>::value
>::value,
lexical_cast_dynamic_num_ignoring_minus<Target, Source>,
lexical_cast_dynamic_num_not_ignoring_minus<Target, Source>
};
}
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
inline Target lexical_cast(const Source &arg)
{
- typedef BOOST_DEDUCED_TYPENAME detail::array_to_pointer_decay<Source>::type src;
-
- typedef BOOST_DEDUCED_TYPENAME ::boost::type_traits::ice_or<
- detail::is_xchar_to_xchar<Target, src>::value,
- detail::is_char_array_to_stdstring<Target,src>::value,
- ::boost::type_traits::ice_and<
- is_same<Target, src>::value,
- detail::is_stdstring<Target>::value
+ typedef BOOST_DEDUCED_TYPENAME boost::detail::array_to_pointer_decay<Source>::type src;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::type_traits::ice_or<
+ boost::detail::is_xchar_to_xchar<Target, src >::value,
+ boost::detail::is_char_array_to_stdstring<Target, src >::value,
+ boost::type_traits::ice_and<
+ boost::is_same<Target, src >::value,
+ boost::detail::is_stdstring<Target >::value
>::value
- > do_copy_type;
+ > shall_we_copy_t;
typedef BOOST_DEDUCED_TYPENAME
- detail::is_arithmetic_and_not_xchars<Target, src> do_copy_with_dynamic_check_type;
-
- typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
- do_copy_type::value,
- detail::lexical_cast_copy<src>,
- BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
- do_copy_with_dynamic_check_type::value,
- detail::lexical_cast_dynamic_num<Target, src>,
- detail::lexical_cast_do_cast<Target, src>
+ boost::detail::is_arithmetic_and_not_xchars<Target, src > shall_we_copy_with_dynamic_check_t;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ shall_we_copy_t::value,
+ boost::detail::lexical_cast_copy<src >,
+ BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ shall_we_copy_with_dynamic_check_t::value,
+ boost::detail::lexical_cast_dynamic_num<Target, src >,
+ boost::detail::lexical_cast_do_cast<Target, src >
>::type
>::type caster_type;
return caster_type::lexical_cast_impl(arg);
}
- #else
+ template <typename Target>
+ inline Target lexical_cast(const char* chars, std::size_t count)
+ {
+ return ::boost::lexical_cast<Target>(
+ ::boost::iterator_range<const char*>(chars, chars + count)
+ );
+ }
+
- namespace detail // stream wrapper for handling lexical conversions
+ 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_CXX11_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_CXX11_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
+
+namespace boost {
+ namespace detail
+ {
+
+ // selectors for choosing stream character type
+ template<typename Type>
+ struct stream_char
+ {
+ typedef char type;
+ };
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#ifndef BOOST_NO_INTRINSIC_WCHAR_T
+ template<>
+ struct stream_char<wchar_t>
+ {
+ typedef wchar_t type;
+ };
+#endif
+
+ template<>
+ struct stream_char<wchar_t *>
+ {
+ typedef wchar_t type;
+ };
+
+ template<>
+ struct stream_char<const wchar_t *>
+ {
+ typedef wchar_t type;
+ };
+
+ template<>
+ struct stream_char<std::wstring>
+ {
+ typedef wchar_t type;
+ };
+#endif
+
+ // stream wrapper for handling lexical conversions
template<typename Target, typename Source, typename Traits>
class lexical_stream
{
return result;
}
- #endif
-}
+} // namespace boost
+
+#endif
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
-// Copyright Antony Polukhin, 2011-2012.
+// Copyright Antony Polukhin, 2011-2013.
//
// 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)
+#undef BOOST_LCAST_THROW_BAD_CAST
#undef BOOST_LCAST_NO_WCHAR_T
-#endif
+
+#endif // BOOST_LEXICAL_CAST_INCLUDED
+
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