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Diffstat (limited to '3rdParty/Boost/src/boost/lexical_cast.hpp')
-rw-r--r--3rdParty/Boost/src/boost/lexical_cast.hpp2405
1 files changed, 1207 insertions, 1198 deletions
diff --git a/3rdParty/Boost/src/boost/lexical_cast.hpp b/3rdParty/Boost/src/boost/lexical_cast.hpp
index c475982..814b69e 100644
--- a/3rdParty/Boost/src/boost/lexical_cast.hpp
+++ b/3rdParty/Boost/src/boost/lexical_cast.hpp
@@ -3,7 +3,7 @@
// MS compatible compilers support #pragma once
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
# pragma once
#endif
@@ -19,7 +19,7 @@
// Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
// Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
// Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
-// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2012
+// when: November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
#include <boost/config.hpp>
#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
@@ -87,50 +87,39 @@ namespace boost
{
public:
- bad_lexical_cast() BOOST_NOEXCEPT :
+ bad_lexical_cast() BOOST_NOEXCEPT
#ifndef BOOST_NO_TYPEID
- source(&typeid(void)), target(&typeid(void))
-#else
- source(0), target(0) // this breaks getters
+ : source(&typeid(void)), target(&typeid(void))
#endif
- {
+ {}
+
+ virtual const char *what() const BOOST_NOEXCEPT_OR_NOTHROW {
+ return "bad lexical cast: "
+ "source type value could not be interpreted as target";
}
+ virtual ~bad_lexical_cast() BOOST_NOEXCEPT_OR_NOTHROW
+ {}
+
+#ifndef BOOST_NO_TYPEID
bad_lexical_cast(
- const std::type_info &source_type_arg,
- const std::type_info &target_type_arg) BOOST_NOEXCEPT :
- source(&source_type_arg), target(&target_type_arg)
- {
- }
+ const std::type_info &source_type_arg,
+ const std::type_info &target_type_arg) BOOST_NOEXCEPT
+ : source(&source_type_arg), target(&target_type_arg)
+ {}
- const std::type_info &source_type() const
- {
+ const std::type_info &source_type() const BOOST_NOEXCEPT {
return *source;
}
- const std::type_info &target_type() const
- {
- return *target;
- }
-#ifndef BOOST_NO_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";
+ const std::type_info &target_type() const BOOST_NOEXCEPT {
+ return *target;
}
-#ifndef BOOST_NO_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;
+#endif
};
namespace detail // widest_char
@@ -146,12 +135,12 @@ namespace boost
}
} // namespace boost
-#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) && !defined(__PGIC__)
+#if !defined(__SUNPRO_CC) && !defined(__PGIC__)
#include <cmath>
#include <istream>
-#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
#include <array>
#endif
@@ -162,262 +151,347 @@ namespace boost
#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>
+#include <boost/detail/basic_pointerbuf.hpp>
+#include <boost/noncopyable.hpp>
#ifndef BOOST_NO_CWCHAR
# include <cwchar>
#endif
namespace boost {
- namespace detail // widest_char<...> (continuation)
- {
- struct not_a_character_type{};
-
- template <typename CharT>
- struct widest_char<not_a_character_type, CharT >
- {
- typedef CharT type;
- };
- template <typename CharT>
- struct widest_char< CharT, not_a_character_type >
- {
- typedef CharT type;
- };
-
- template <>
- struct widest_char< not_a_character_type, not_a_character_type >
- {
- typedef char type;
- };
- }
-
- namespace detail // is_char_or_wchar<...> and stream_char<...> templates
+ namespace detail // is_character<...>
{
// returns true, if T is one of the character types
- template <typename T>
- struct is_char_or_wchar
+ template < typename T >
+ struct is_character
{
- typedef ::boost::type_traits::ice_or<
- ::boost::is_same< T, char >::value,
+ 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,
+ boost::is_same< T, wchar_t >::value,
#endif
- #ifndef BOOST_NO_CHAR16_T
- ::boost::is_same< T, char16_t >::value,
+ #ifndef BOOST_NO_CXX11_CHAR16_T
+ boost::is_same< T, char16_t >::value,
#endif
- #ifndef BOOST_NO_CHAR32_T
- ::boost::is_same< T, char32_t >::value,
+ #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
+ boost::is_same< T, unsigned char >::value,
+ boost::is_same< T, signed char >::value
> result_type;
BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
};
+ }
- // selectors for choosing stream character type
- // returns one of char, wchar_t, char16_t, char32_t or not_a_character_type types
- template <typename Type>
- struct stream_char
+ namespace detail // normalize_single_byte_char<Char>
+ {
+ // Converts signed/unsigned char to char
+ template < class Char >
+ struct normalize_single_byte_char
{
- typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
- is_char_or_wchar<Type >::value,
- Type,
- boost::detail::not_a_character_type
- >::type type;
+ typedef Char type;
};
template <>
- struct stream_char<unsigned char>
+ struct normalize_single_byte_char< signed char >
{
typedef char type;
};
template <>
- struct stream_char<signed char>
+ struct normalize_single_byte_char< unsigned char >
{
typedef char type;
};
+ }
- template <typename CharT>
- struct stream_char<CharT*>
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
-
- template <typename CharT>
- struct stream_char<const CharT*>
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
+ namespace detail // deduce_character_type_later<T>
+ {
+ // 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 <typename CharT>
- struct stream_char<iterator_range<CharT*> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT*>::type type;
- };
+ namespace detail // stream_char_common<T>
+ {
+ // 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_character< 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_character< 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_character< 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_character< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::iterator_range< Char* > >
+ > {};
- template <typename CharT>
- struct stream_char<iterator_range<const CharT*> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<const CharT*>::type type;
- };
+ template < typename Char >
+ struct stream_char_common< boost::iterator_range< const Char* > >: public boost::mpl::if_c<
+ boost::detail::is_character< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::iterator_range< const Char* > >
+ > {};
- template <class CharT, class Traits, class Alloc>
- struct stream_char< std::basic_string<CharT, Traits, Alloc> >
+ template < class Char, class Traits, class Alloc >
+ struct stream_char_common< std::basic_string< Char, Traits, Alloc > >
{
- typedef CharT type;
+ typedef Char type;
};
- template <class CharT, class Traits, class Alloc>
- struct stream_char< ::boost::container::basic_string<CharT, Traits, Alloc> >
+ template < class Char, class Traits, class Alloc >
+ struct stream_char_common< boost::container::basic_string< Char, Traits, Alloc > >
{
- typedef CharT type;
+ typedef Char type;
};
- template<typename CharT, std::size_t N>
- struct stream_char<boost::array<CharT, N> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
+ template < typename Char, std::size_t N >
+ struct stream_char_common< boost::array< Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_character< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::array< Char, N > >
+ > {};
- template<typename CharT, std::size_t N>
- struct stream_char<boost::array<const CharT, N> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
+ template < typename Char, std::size_t N >
+ struct stream_char_common< boost::array< const Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_character< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< boost::array< const Char, N > >
+ > {};
-#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
- template <typename CharT, std::size_t N>
- struct stream_char<std::array<CharT, N> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
+#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_character< Char >::value,
+ Char,
+ boost::detail::deduce_character_type_later< std::array< Char, N > >
+ > {};
- template <typename CharT, std::size_t N>
- struct stream_char<std::array<const CharT, N> >
- {
- typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
- };
-#endif // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+ template < typename Char, std::size_t N >
+ struct stream_char_common< std::array< const Char, N > >: public boost::mpl::if_c<
+ boost::detail::is_character< 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<wchar_t>
+ template <>
+ struct stream_char_common< wchar_t >
{
- typedef boost::detail::not_a_character_type type;
+ typedef char type;
};
+#endif
+ }
- template<>
- struct stream_char<wchar_t*>
- {
- typedef wchar_t type;
- };
+ namespace detail // deduce_source_char_impl<T>
+ {
+ // 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;
- template<>
- struct stream_char<const wchar_t*>
- {
- typedef wchar_t 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
+ };
}
- namespace detail // deduce_char_traits template
+ namespace detail // deduce_target_char_impl<T>
{
-
- template<class CharT, class Target, class Source>
- struct deduce_char_traits
- {
- typedef std::char_traits<CharT> 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
};
+ }
+
+ namespace detail // deduce_target_char<T> and deduce_source_char<T>
+ {
+ // 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
- template<class CharT, class Traits, class Alloc, class Source>
- struct deduce_char_traits< CharT
- , std::basic_string<CharT,Traits,Alloc>
- , Source
- >
+ template < class T >
+ struct deduce_target_char
{
- typedef Traits type;
+ typedef BOOST_DEDUCED_TYPENAME stream_char_common< T >::type stage1_type;
+ typedef BOOST_DEDUCED_TYPENAME deduce_target_char_impl< stage1_type >::type stage2_type;
+
+ typedef stage2_type type;
};
- template<class CharT, class Target, class Traits, class Alloc>
- struct deduce_char_traits< CharT
- , Target
- , std::basic_string<CharT,Traits,Alloc>
- >
+ template < class T >
+ struct deduce_source_char
{
- typedef Traits 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;
};
+ }
- template<class CharT, class Traits, class Alloc, class Source>
- struct deduce_char_traits< CharT
- , ::boost::container::basic_string<CharT,Traits,Alloc>
- , Source
- >
+ namespace detail // extract_char_traits template
+ {
+ // We are attempting to get char_traits<> from T
+ // template parameter. Otherwise we'll be using std::char_traits<Char>
+ template < class Char, class T >
+ struct extract_char_traits
+ : boost::false_type
{
- typedef Traits type;
+ typedef std::char_traits< Char > trait_t;
};
- template<class CharT, class Target, class Traits, class Alloc>
- struct deduce_char_traits< CharT
- , Target
- , ::boost::container::basic_string<CharT,Traits,Alloc>
- >
+ template < class Char, class Traits, class Alloc >
+ struct extract_char_traits< Char, std::basic_string< Char, Traits, Alloc > >
+ : boost::true_type
{
- typedef Traits type;
+ typedef Traits trait_t;
};
- 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 Alloc>
+ struct extract_char_traits< Char, boost::container::basic_string< Char, Traits, Alloc > >
+ : boost::true_type
{
- typedef Traits type;
+ typedef Traits trait_t;
};
+ }
- 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>
- >
+ namespace detail // array_to_pointer_decay<T>
+ {
+ template<class T>
+ struct array_to_pointer_decay
{
- typedef Traits type;
+ typedef T 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 T, std::size_t N>
+ struct array_to_pointer_decay<T[N]>
{
- typedef Traits type;
+ typedef const T * 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>
- >
+ 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 Traits type;
+ 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;
- template< class Source // Source type of lexical_cast.
+ template< class Source, // Source type of lexical_cast.
+ class Enable = void // helper type
>
struct lcast_src_length
{
BOOST_STATIC_CONSTANT(std::size_t, value = 1);
- // To check coverage, build the test with
- // bjam --v2 profile optimization=off
- static void check_coverage() {}
};
// Helper for integral types.
@@ -433,8 +507,10 @@ namespace boost {
// <boost/limits.hpp> doesn't add missing specialization for
// numeric_limits<T> for some integral type T.
// When is_specialized is false, the whole expression is 0.
- template<class Source>
- struct lcast_src_length_integral
+ template <class Source>
+ struct lcast_src_length<
+ Source, BOOST_DEDUCED_TYPENAME boost::enable_if<boost::is_integral<Source> >::type
+ >
{
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
BOOST_STATIC_CONSTANT(std::size_t, value =
@@ -448,27 +524,6 @@ namespace boost {
#endif
};
-#define BOOST_LCAST_DEF(T) \
- template<> struct lcast_src_length<T> \
- : lcast_src_length_integral<T> \
- { static void check_coverage() {} };
-
- BOOST_LCAST_DEF(short)
- BOOST_LCAST_DEF(unsigned short)
- BOOST_LCAST_DEF(int)
- BOOST_LCAST_DEF(unsigned int)
- BOOST_LCAST_DEF(long)
- BOOST_LCAST_DEF(unsigned long)
-#if defined(BOOST_HAS_LONG_LONG)
- BOOST_LCAST_DEF(boost::ulong_long_type)
- BOOST_LCAST_DEF(boost::long_long_type )
-#elif defined(BOOST_HAS_MS_INT64)
- BOOST_LCAST_DEF(unsigned __int64)
- BOOST_LCAST_DEF( __int64)
-#endif
-
-#undef BOOST_LCAST_DEF
-
#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
// Helper for floating point types.
// -1.23456789e-123456
@@ -481,222 +536,242 @@ namespace boost {
// ^^^^^^ exponent (assumed 6 or less digits)
// sign + leading digit + decimal point + "e" + exponent sign == 5
template<class Source>
- struct lcast_src_length_floating
+ struct lcast_src_length<
+ Source, BOOST_DEDUCED_TYPENAME boost::enable_if<boost::is_float<Source> >::type
+ >
{
BOOST_STATIC_ASSERT(
std::numeric_limits<Source>::max_exponent10 <= 999999L &&
std::numeric_limits<Source>::min_exponent10 >= -999999L
);
+
BOOST_STATIC_CONSTANT(std::size_t, value =
5 + lcast_precision<Source>::value + 6
);
};
-
- template<>
- struct lcast_src_length<float>
- : lcast_src_length_floating<float>
- {
- static void check_coverage() {}
- };
-
- template<>
- struct lcast_src_length<double>
- : lcast_src_length_floating<double>
- {
- static void check_coverage() {}
- };
-
- template<>
- struct lcast_src_length<long double>
- : lcast_src_length_floating<long double>
- {
- static void check_coverage() {}
- };
-
#endif // #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
}
- namespace detail // '0', '+' and '-' constants
+ namespace detail // lexical_cast_stream_traits<Source, Target>
{
- template<typename CharT> struct lcast_char_constants;
-
- template<>
- struct lcast_char_constants<char>
- {
- BOOST_STATIC_CONSTANT(char, zero = '0');
- BOOST_STATIC_CONSTANT(char, minus = '-');
- BOOST_STATIC_CONSTANT(char, plus = '+');
- BOOST_STATIC_CONSTANT(char, lowercase_e = 'e');
- BOOST_STATIC_CONSTANT(char, capital_e = 'E');
- BOOST_STATIC_CONSTANT(char, c_decimal_separator = '.');
- };
+ 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;
-#ifndef BOOST_LCAST_NO_WCHAR_T
- template<>
- struct lcast_char_constants<wchar_t>
- {
- BOOST_STATIC_CONSTANT(wchar_t, zero = L'0');
- BOOST_STATIC_CONSTANT(wchar_t, minus = L'-');
- BOOST_STATIC_CONSTANT(wchar_t, plus = L'+');
- BOOST_STATIC_CONSTANT(wchar_t, lowercase_e = L'e');
- BOOST_STATIC_CONSTANT(wchar_t, capital_e = L'E');
- BOOST_STATIC_CONSTANT(wchar_t, c_decimal_separator = L'.');
- };
+#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
-#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
- template<>
- struct lcast_char_constants<char16_t>
- {
- BOOST_STATIC_CONSTANT(char16_t, zero = u'0');
- BOOST_STATIC_CONSTANT(char16_t, minus = u'-');
- BOOST_STATIC_CONSTANT(char16_t, plus = u'+');
- BOOST_STATIC_CONSTANT(char16_t, lowercase_e = u'e');
- BOOST_STATIC_CONSTANT(char16_t, capital_e = u'E');
- BOOST_STATIC_CONSTANT(char16_t, c_decimal_separator = u'.');
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ boost::detail::extract_char_traits<char_type, Target>::value,
+ BOOST_DEDUCED_TYPENAME boost::detail::extract_char_traits<char_type, Target>,
+ BOOST_DEDUCED_TYPENAME boost::detail::extract_char_traits<char_type, no_cv_src>
+ >::type::trait_t 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_character<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_character<
+ 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;
};
-#endif
+ }
-#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
- template<>
- struct lcast_char_constants<char32_t>
- {
- BOOST_STATIC_CONSTANT(char32_t, zero = U'0');
- BOOST_STATIC_CONSTANT(char32_t, minus = U'-');
- BOOST_STATIC_CONSTANT(char32_t, plus = U'+');
- BOOST_STATIC_CONSTANT(char32_t, lowercase_e = U'e');
- BOOST_STATIC_CONSTANT(char32_t, capital_e = U'E');
- BOOST_STATIC_CONSTANT(char32_t, c_decimal_separator = U'.');
+ namespace detail // '0', '-', '+', 'e', 'E' and '.' constants
+ {
+ template < typename Char >
+ struct lcast_char_constants {
+ // We check in tests assumption that static casted character is
+ // equal to correctly written C++ literal: U'0' == static_cast<char32_t>('0')
+ BOOST_STATIC_CONSTANT(Char, zero = static_cast<Char>('0'));
+ BOOST_STATIC_CONSTANT(Char, minus = static_cast<Char>('-'));
+ BOOST_STATIC_CONSTANT(Char, plus = static_cast<Char>('+'));
+ BOOST_STATIC_CONSTANT(Char, lowercase_e = static_cast<Char>('e'));
+ BOOST_STATIC_CONSTANT(Char, capital_e = static_cast<Char>('E'));
+ BOOST_STATIC_CONSTANT(Char, c_decimal_separator = static_cast<Char>('.'));
};
-#endif
}
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_NOEXCEPT
- {
- typedef BOOST_DEDUCED_TYPENAME make_unsigned<T>::type result_type;
- const result_type uvalue = static_cast<result_type>(value);
- return value < 0 ? -uvalue : uvalue;
+ BOOST_DEDUCED_TYPENAME boost::make_unsigned<T>::type lcast_to_unsigned(const T value) BOOST_NOEXCEPT {
+ typedef BOOST_DEDUCED_TYPENAME boost::make_unsigned<T>::type result_type;
+ return value < 0
+ ? static_cast<result_type>(0u - static_cast<result_type>(value))
+ : static_cast<result_type>(value);
}
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#elif defined( __BORLANDC__ )
-# pragma option pop
-#endif
}
namespace detail // lcast_put_unsigned
{
- template<class Traits, class T, class CharT>
- CharT* lcast_put_unsigned(const T n_param, CharT* finish)
- {
-#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
- BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
-#endif
-
- typedef typename Traits::int_type int_type;
- CharT const czero = lcast_char_constants<CharT>::zero;
- int_type const zero = Traits::to_int_type(czero);
+ template <class Traits, class T, class CharT>
+ class lcast_put_unsigned: boost::noncopyable {
+ typedef BOOST_DEDUCED_TYPENAME Traits::int_type int_type;
BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
(sizeof(int_type) > sizeof(T))
, int_type
, T
- >::type n = n_param;
+ >::type m_value;
+ CharT* m_finish;
+ CharT const m_czero;
+ int_type const m_zero;
+
+ public:
+ lcast_put_unsigned(const T n_param, CharT* finish) BOOST_NOEXCEPT
+ : m_value(n_param), m_finish(finish)
+ , m_czero(lcast_char_constants<CharT>::zero), m_zero(Traits::to_int_type(m_czero))
+ {
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+ BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+#endif
+ }
+ CharT* convert() {
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
- std::locale loc;
- if (loc != std::locale::classic()) {
+ std::locale loc;
+ if (loc == std::locale::classic()) {
+ return main_convert_loop();
+ }
+
typedef std::numpunct<CharT> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, loc);
std::string const grouping = np.grouping();
std::string::size_type const grouping_size = grouping.size();
- if ( grouping_size && grouping[0] > 0 )
- {
+ if (!grouping_size || grouping[0] <= 0) {
+ return main_convert_loop();
+ }
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
// Check that ulimited group is unreachable:
BOOST_STATIC_ASSERT(std::numeric_limits<T>::digits10 < CHAR_MAX);
#endif
- CharT thousands_sep = np.thousands_sep();
- std::string::size_type group = 0; // current group number
- char last_grp_size = grouping[0];
- char left = last_grp_size;
-
- do
- {
- if(left == 0)
- {
- ++group;
- if(group < grouping_size)
- {
- char const grp_size = grouping[group];
- last_grp_size = grp_size <= 0 ? CHAR_MAX : grp_size;
- }
-
- left = last_grp_size;
- --finish;
- Traits::assign(*finish, thousands_sep);
+ CharT const thousands_sep = np.thousands_sep();
+ std::string::size_type group = 0; // current group number
+ char last_grp_size = grouping[0];
+ char left = last_grp_size;
+
+ do {
+ if (left == 0) {
+ ++group;
+ if (group < grouping_size) {
+ char const grp_size = grouping[group];
+ last_grp_size = (grp_size <= 0 ? static_cast<char>(CHAR_MAX) : grp_size);
}
- --left;
+ left = last_grp_size;
+ --m_finish;
+ Traits::assign(*m_finish, thousands_sep);
+ }
+
+ --left;
+ } while (main_convert_itaration());
- --finish;
- int_type const digit = static_cast<int_type>(n % 10U);
- Traits::assign(*finish, Traits::to_char_type(zero + digit));
- n /= 10;
- } while(n);
- return finish;
- }
- }
+ return m_finish;
+#else
+ return main_convert_loop();
#endif
- {
- do
- {
- --finish;
- int_type const digit = static_cast<int_type>(n % 10U);
- Traits::assign(*finish, Traits::to_char_type(zero + digit));
- n /= 10;
- } while(n);
}
- return finish;
- }
+ private:
+ inline bool main_convert_itaration() BOOST_NOEXCEPT {
+ --m_finish;
+ int_type const digit = static_cast<int_type>(m_value % 10U);
+ Traits::assign(*m_finish, Traits::to_char_type(m_zero + digit));
+ m_value /= 10;
+ return !!m_value; // supressing warnings
+ }
+
+ inline CharT* main_convert_loop() BOOST_NOEXCEPT {
+ while (main_convert_itaration());
+ return m_finish;
+ }
+ };
}
namespace detail // lcast_ret_unsigned
{
- template<class Traits, class T, class CharT>
- inline bool lcast_ret_unsigned(T& value, const CharT* const begin, const CharT* end)
- {
+ template <class Traits, class T, class CharT>
+ class lcast_ret_unsigned: boost::noncopyable {
+ bool m_multiplier_overflowed;
+ T m_multiplier;
+ T& m_value;
+ const CharT* const m_begin;
+ const CharT* m_end;
+
+ public:
+ lcast_ret_unsigned(T& value, const CharT* const begin, const CharT* end) BOOST_NOEXCEPT
+ : m_multiplier_overflowed(false), m_multiplier(1), m_value(value), m_begin(begin), m_end(end)
+ {
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
- BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+ 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;
- --end;
- T multiplier = 1;
- bool multiplier_overflowed = false;
+ inline bool convert() {
+ CharT const czero = lcast_char_constants<CharT>::zero;
+ --m_end;
+ m_value = static_cast<T>(0);
+
+ if (m_begin > m_end || *m_end < czero || *m_end >= czero + 10)
+ return false;
+ m_value = static_cast<T>(*m_end - czero);
+ --m_end;
+
+#ifdef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+ return main_convert_loop();
+#else
+ std::locale loc;
+ if (loc == std::locale::classic()) {
+ return main_convert_loop();
+ }
-#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
- std::locale loc;
- if (loc != std::locale::classic()) {
typedef std::numpunct<CharT> numpunct;
numpunct const& np = BOOST_USE_FACET(numpunct, loc);
std::string const& grouping = np.grouping();
@@ -705,85 +780,86 @@ namespace boost {
/* According to Programming languages - C++
* we MUST check for correct grouping
*/
- if (grouping_size && grouping[0] > 0)
+ if (!grouping_size || grouping[0] <= 0) {
+ return main_convert_loop();
+ }
+
+ unsigned char current_grouping = 0;
+ CharT const thousands_sep = np.thousands_sep();
+ char remained = static_cast<char>(grouping[current_grouping] - 1);
+
+ for (;m_end >= m_begin; --m_end)
{
- unsigned char current_grouping = 0;
- CharT const thousands_sep = np.thousands_sep();
- char remained = grouping[current_grouping] - 1;
- bool shall_we_return = true;
-
- for(;end>=begin; --end)
- {
- if (remained) {
- T const multiplier_10 = 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;
-
- if (*end < czero || *end >= czero + 10
- /* detecting overflow */
- || (dig_value && new_sub_value / dig_value != multiplier_10)
- || static_cast<T>((std::numeric_limits<T>::max)()-new_sub_value) < value
- || (multiplier_overflowed && dig_value)
- )
- return false;
-
- value += new_sub_value;
- multiplier *= 10;
- --remained;
+ if (remained) {
+ if (!main_convert_itaration()) {
+ return false;
+ }
+ --remained;
+ } else {
+ if ( !Traits::eq(*m_end, thousands_sep) ) //|| begin == end ) return false;
+ {
+ /*
+ * According to Programming languages - C++
+ * Digit grouping is checked. That is, the positions of discarded
+ * separators is examined for consistency with
+ * use_facet<numpunct<charT> >(loc ).grouping()
+ *
+ * BUT what if there is no separators at all and grouping()
+ * is not empty? Well, we have no extraced separators, so we
+ * won`t check them for consistency. This will allow us to
+ * work with "C" locale from other locales
+ */
+ return main_convert_loop();
} else {
- if ( !Traits::eq(*end, thousands_sep) ) //|| begin == end ) return false;
- {
- /*
- * According to Programming languages - C++
- * Digit grouping is checked. That is, the positions of discarded
- * separators is examined for consistency with
- * use_facet<numpunct<charT> >(loc ).grouping()
- *
- * BUT what if there is no separators at all and grouping()
- * is not empty? Well, we have no extraced separators, so we
- * won`t check them for consistency. This will allow us to
- * work with "C" locale from other locales
- */
- shall_we_return = false;
- break;
- } else {
- if ( begin == end ) return false;
- if (current_grouping < grouping_size-1 ) ++current_grouping;
- remained = grouping[current_grouping];
- }
+ if (m_begin == m_end) return false;
+ if (current_grouping < grouping_size - 1) ++current_grouping;
+ remained = grouping[current_grouping];
}
}
+ } /*for*/
- if (shall_we_return) return true;
- }
- }
+ return true;
#endif
- {
- while ( begin <= end )
- {
- T const multiplier_10 = 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;
+ private:
+ // Iteration that does not care about grouping/separators and assumes that all
+ // input characters are digits
+ inline bool main_convert_itaration() BOOST_NOEXCEPT {
+ CharT const czero = lcast_char_constants<CharT>::zero;
+ T const maxv = (std::numeric_limits<T>::max)();
+
+ m_multiplier_overflowed = m_multiplier_overflowed || (maxv/10 < m_multiplier);
+ m_multiplier = static_cast<T>(m_multiplier * 10);
+
+ T const dig_value = static_cast<T>(*m_end - czero);
+ T const new_sub_value = static_cast<T>(m_multiplier * dig_value);
+
+ // We must correctly handle situations like `000000000000000000000000000001`.
+ // So we take care of overflow only if `dig_value` is not '0'.
+ if (*m_end < czero || *m_end >= czero + 10 // checking for correct digit
+ || (dig_value && ( // checking for overflow of ...
+ m_multiplier_overflowed // ... multiplier
+ || static_cast<T>(maxv / dig_value) < m_multiplier // ... subvalue
+ || static_cast<T>(maxv - new_sub_value) < m_value // ... whole expression
+ ))
+ ) return false;
- if (*end < czero || *end >= czero + 10
- /* detecting overflow */
- || (dig_value && new_sub_value / dig_value != multiplier_10)
- || static_cast<T>((std::numeric_limits<T>::max)()-new_sub_value) < value
- || (multiplier_overflowed && dig_value)
- )
- return false;
+ m_value = static_cast<T>(m_value + new_sub_value);
+
+ return true;
+ }
- value += new_sub_value;
- multiplier *= 10;
- --end;
+ bool main_convert_loop() BOOST_NOEXCEPT {
+ for ( ; m_end >= m_begin; --m_end) {
+ if (!main_convert_itaration()) {
+ return false;
+ }
}
+
+ return true;
}
- return true;
- }
+ };
}
namespace detail
@@ -808,42 +884,37 @@ namespace boost {
if (begin == end) return false;
const CharT minus = lcast_char_constants<CharT>::minus;
const CharT plus = lcast_char_constants<CharT>::plus;
- const int inifinity_size = 8;
+ const int inifinity_size = 8; // == sizeof("infinity") - 1
- bool has_minus = false;
/* Parsing +/- */
- if( *begin == minus)
- {
+ bool const has_minus = (*begin == minus);
+ if (has_minus || *begin == plus) {
++ begin;
- has_minus = true;
}
- else if( *begin == plus ) ++begin;
- if( end-begin < 3 ) return false;
- if( lc_iequal(begin, lc_nan, lc_NAN, 3) )
- {
+ if (end - begin < 3) return false;
+ if (lc_iequal(begin, lc_nan, lc_NAN, 3)) {
begin += 3;
- if (end != begin) /* It is 'nan(...)' or some bad input*/
- {
- if(end-begin<2) return false; // bad input
+ if (end != begin) {
+ /* It is 'nan(...)' or some bad input*/
+
+ if (end - begin < 2) return false; // bad input
-- end;
- if( *begin != opening_brace || *end != closing_brace) return false; // bad input
+ if (*begin != opening_brace || *end != closing_brace) return false; // bad input
}
if( !has_minus ) value = std::numeric_limits<T>::quiet_NaN();
else value = (boost::math::changesign) (std::numeric_limits<T>::quiet_NaN());
return true;
- } else
- if (( /* 'INF' or 'inf' */
- end-begin==3
- &&
- lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
+ } else if (
+ ( /* 'INF' or 'inf' */
+ end - begin == 3 // 3 == sizeof('inf') - 1
+ && lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
)
||
( /* 'INFINITY' or 'infinity' */
- end-begin==inifinity_size
- &&
- lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
+ end - begin == inifinity_size
+ && lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
)
)
{
@@ -862,10 +933,8 @@ namespace boost {
{
using namespace std;
const CharT minus = lcast_char_constants<CharT>::minus;
- if ( (boost::math::isnan)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
+ if ((boost::math::isnan)(value)) {
+ if ((boost::math::signbit)(value)) {
*begin = minus;
++ begin;
}
@@ -873,10 +942,8 @@ namespace boost {
memcpy(begin, lc_nan, 3 * sizeof(CharT));
end = begin + 3;
return true;
- } else if ( (boost::math::isinf)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
+ } else if ((boost::math::isinf)(value)) {
+ if ((boost::math::signbit)(value)) {
*begin = minus;
++ begin;
}
@@ -892,8 +959,7 @@ namespace boost {
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
- bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value) BOOST_NOEXCEPT
- {
+ 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"
@@ -901,16 +967,14 @@ namespace boost {
}
template <class T>
- bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value) BOOST_NOEXCEPT
- {
+ 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
-#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#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) BOOST_NOEXCEPT
- {
+ 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"
@@ -918,15 +982,13 @@ namespace boost {
}
template <class T>
- bool put_inf_nan(char16_t* begin, char16_t*& end, const T& value) BOOST_NOEXCEPT
- {
+ 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
-#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#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) BOOST_NOEXCEPT
- {
+ 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"
@@ -934,15 +996,13 @@ namespace boost {
}
template <class T>
- bool put_inf_nan(char32_t* begin, char32_t*& end, const T& value) BOOST_NOEXCEPT
- {
+ 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) BOOST_NOEXCEPT
- {
+ 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"
@@ -950,8 +1010,7 @@ namespace boost {
}
template <class CharT, class T>
- bool put_inf_nan(CharT* begin, CharT*& end, const T& value) BOOST_NOEXCEPT
- {
+ bool put_inf_nan(CharT* begin, CharT*& end, const T& value) BOOST_NOEXCEPT {
return put_inf_nan_impl(begin, end, value, "nan", "infinity");
}
}
@@ -959,6 +1018,12 @@ namespace boost {
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
{
@@ -969,21 +1034,41 @@ namespace boost {
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
};
template<class Traits, class T, class CharT>
- inline bool lcast_ret_float(T& value, const CharT* begin, const CharT* end)
+ inline bool lcast_ret_float(T& value, const CharT* begin, const CharT* const end)
{
+ value = static_cast<T>(0);
+ if (begin == end) return false;
+ if (parse_inf_nan(begin, end, value)) return true;
+
+ CharT const czero = lcast_char_constants<CharT>::zero;
+ CharT const minus = lcast_char_constants<CharT>::minus;
+ CharT const plus = lcast_char_constants<CharT>::plus;
+ CharT const capital_e = lcast_char_constants<CharT>::capital_e;
+ CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
+
+ /* Getting the plus/minus sign */
+ bool const has_minus = Traits::eq(*begin, minus);
+ if (has_minus || Traits::eq(*begin, plus)) {
+ ++ begin;
+ if (begin == end) return false;
+ }
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
std::locale loc;
@@ -995,7 +1080,7 @@ namespace boost {
: 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;
@@ -1003,51 +1088,25 @@ namespace boost {
CharT const decimal_point = lcast_char_constants<CharT>::c_decimal_separator;
#endif
- CharT const czero = lcast_char_constants<CharT>::zero;
- CharT const minus = lcast_char_constants<CharT>::minus;
- CharT const plus = lcast_char_constants<CharT>::plus;
- CharT const capital_e = lcast_char_constants<CharT>::capital_e;
- CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
-
- 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;
- int_type const zero = Traits::to_int_type(czero);
- if (begin == end) return false;
-
- /* Getting the plus/minus sign */
- bool has_minus = false;
- if (Traits::eq(*begin, minus) ) {
- ++ begin;
- has_minus = true;
- if (begin == end) return false;
- } else if (Traits::eq(*begin, plus) ) {
- ++begin;
- if (begin == end) return false;
- }
-
bool found_decimal = false;
bool found_number_before_exp = false;
- int pow_of_10 = 0;
+ typedef int pow_of_10_t;
+ pow_of_10_t pow_of_10 = 0;
+
+ typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::type mantissa_type;
mantissa_type mantissa=0;
bool is_mantissa_full = false;
-
char length_since_last_delim = 0;
- while ( begin != end )
- {
+ while (begin != end) {
if (found_decimal) {
/* We allow no thousand_separators after decimal point */
- mantissa_type tmp_mantissa = mantissa * 10u;
+ const mantissa_type tmp_sub_value = static_cast<mantissa_type>(*begin - czero);
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
- || (std::numeric_limits<mantissa_type>::max)()-(*begin - zero) < tmp_mantissa
+ || ((std::numeric_limits<mantissa_type>::max)() - tmp_sub_value) / 10u < mantissa
) {
is_mantissa_full = true;
++ begin;
@@ -1055,8 +1114,7 @@ namespace boost {
}
-- pow_of_10;
- mantissa = tmp_mantissa;
- mantissa += *begin - zero;
+ mantissa = static_cast<mantissa_type>(mantissa * 10 + tmp_sub_value);
found_number_before_exp = true;
} else {
@@ -1066,18 +1124,15 @@ namespace boost {
/* Checking for mantissa overflow. If overflow will
* occur, them we only increase multiplyer
*/
- mantissa_type tmp_mantissa = mantissa * 10u;
- if( !is_mantissa_full
- && tmp_mantissa / 10u == mantissa
- && (std::numeric_limits<mantissa_type>::max)()-(*begin - zero) >= tmp_mantissa
+ const mantissa_type tmp_sub_value = static_cast<mantissa_type>(*begin - czero);
+ if( is_mantissa_full
+ || ((std::numeric_limits<mantissa_type>::max)() - tmp_sub_value) / 10u < mantissa
)
{
- mantissa = tmp_mantissa;
- mantissa += *begin - zero;
- } else
- {
is_mantissa_full = true;
++ pow_of_10;
+ } else {
+ mantissa = static_cast<mantissa_type>(mantissa * 10 + tmp_sub_value);
}
found_number_before_exp = true;
@@ -1100,12 +1155,12 @@ namespace boost {
) return false;
#endif
- if(Traits::eq(*begin, decimal_point)) {
+ if (Traits::eq(*begin, decimal_point)) {
++ begin;
found_decimal = true;
if (!found_number_before_exp && begin==end) return false;
continue;
- }else {
+ } else {
if (!found_number_before_exp) return false;
break;
}
@@ -1153,71 +1208,73 @@ namespace boost {
}
// Exponent found
- if ( begin != end && (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) ) {
+ if (begin != end && (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e))) {
++ begin;
- if ( begin == end ) return false;
+ if (begin == end) return false;
- bool exp_has_minus = false;
- if(Traits::eq(*begin, minus)) {
- exp_has_minus = true;
- ++ begin;
- if ( begin == end ) return false;
- } else if (Traits::eq(*begin, plus)) {
+ bool const exp_has_minus = Traits::eq(*begin, minus);
+ if (exp_has_minus || Traits::eq(*begin, plus)) {
++ begin;
- if ( begin == end ) return false;
+ if (begin == end) return false;
}
- int exp_pow_of_10 = 0;
- while ( begin != end )
- {
- if ( *begin < czero
- || *begin >= czero + 10
- || exp_pow_of_10 * 10 < exp_pow_of_10) /* Overflows are checked lower more precisely*/
+ pow_of_10_t exp_pow_of_10 = 0;
+ while (begin != end) {
+ pow_of_10_t const sub_value = *begin - czero;
+
+ if ( *begin < czero || *begin >= czero + 10
+ || ((std::numeric_limits<pow_of_10_t>::max)() - sub_value) / 10 < exp_pow_of_10)
return false;
exp_pow_of_10 *= 10;
- exp_pow_of_10 += *begin - zero;
+ exp_pow_of_10 += sub_value;
++ begin;
};
- if ( exp_pow_of_10 ) {
- /* Overflows are checked lower */
- if ( exp_has_minus ) {
- pow_of_10 -= exp_pow_of_10;
- } else {
- pow_of_10 += exp_pow_of_10;
- }
+ if (exp_has_minus) {
+ if ((std::numeric_limits<pow_of_10_t>::min)() + exp_pow_of_10 > pow_of_10)
+ return false; // failed overflow check
+ pow_of_10 -= exp_pow_of_10;
+ } else {
+ if ((std::numeric_limits<pow_of_10_t>::max)() - exp_pow_of_10 < pow_of_10)
+ return false; // failed overflow check
+ pow_of_10 += exp_pow_of_10;
}
}
/* 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;
+ typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::wide_result_t wide_result_t;
+ 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;
+ return !((boost::math::isinf)(value) || (boost::math::isnan)(value));
}
+// 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 // basic_unlockedbuf
{
- template< class BufferType, class CharT >
- class stl_buf_unlocker: public BufferType{
+ // acts as a stream buffer which wraps around a pair of pointers
+ // and gives acces to internals
+ template <class BufferType, class CharT>
+ class basic_unlockedbuf : public basic_pointerbuf<CharT, BufferType> {
public:
- typedef BufferType base_class;
+ typedef basic_pointerbuf<CharT, BufferType> base_type;
+ typedef BOOST_DEDUCED_TYPENAME base_type::streamsize streamsize;
+
#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;
+ using base_type::setbuf;
#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(); }
+ BufferType* setbuf(char_type* s, streamsize n) { return base_type::setbuf(s, n); }
#endif
};
}
@@ -1225,62 +1282,82 @@ namespace boost {
namespace detail
{
struct do_not_construct_out_stream_t{};
+
+ template <class CharT, class Traits>
+ struct out_stream_helper_trait {
+#if defined(BOOST_NO_STRINGSTREAM)
+ typedef std::ostrstream out_stream_t;
+ typedef void buffer_t;
+#elif defined(BOOST_NO_STD_LOCALE)
+ typedef std::ostringstream out_stream_t;
+ typedef basic_unlockedbuf<std::streambuf, char> buffer_t;
+#else
+ typedef std::basic_ostringstream<CharT, Traits>
+ out_stream_t;
+ typedef basic_unlockedbuf<std::basic_streambuf<CharT, Traits>, CharT>
+ buffer_t;
+#endif
+ };
}
- namespace detail // optimized stream wrapper
+ namespace detail // optimized stream wrappers
{
- // String representation of Source has an upper limit.
template< class CharT // a result of widest_char transformation
- , class Traits // usually char_traits<CharT>
+ , class Traits
, bool RequiresStringbuffer
+ , std::size_t CharacterBufferSize
>
- class lexical_stream_limited_src
- {
+ class lexical_istream_limited_src: boost::noncopyable {
+ typedef BOOST_DEDUCED_TYPENAME out_stream_helper_trait<CharT, Traits>::buffer_t
+ buffer_t;
-#if defined(BOOST_NO_STRINGSTREAM)
- typedef std::ostrstream out_stream_t;
- typedef stl_buf_unlocker<std::strstreambuf, char> unlocked_but_t;
-#elif defined(BOOST_NO_STD_LOCALE)
- typedef std::ostringstream out_stream_t;
- typedef stl_buf_unlocker<std::stringbuf, char> unlocked_but_t;
-#else
- typedef std::basic_ostringstream<CharT, Traits> out_stream_t;
- typedef stl_buf_unlocker<std::basic_stringbuf<CharT, Traits>, CharT> unlocked_but_t;
-#endif
- typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
+ typedef BOOST_DEDUCED_TYPENAME out_stream_helper_trait<CharT, Traits>::out_stream_t
+ out_stream_t;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
RequiresStringbuffer,
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;
+ // A string representation of Source is written to `buffer`.
deduced_out_stream_t out_stream;
+ CharT buffer[CharacterBufferSize];
+
+ // After the `operator <<` finishes, `[start, finish)` is
+ // the range to output by `operator >>`
+ const CharT* start;
+ const CharT* finish;
public:
- lexical_stream_limited_src(CharT* sta, CharT* fin)
- : start(sta)
- , finish(fin)
+ lexical_istream_limited_src() BOOST_NOEXCEPT
+ : start(buffer)
+ , finish(buffer + CharacterBufferSize)
{}
+
+ const CharT* cbegin() const BOOST_NOEXCEPT {
+ return start;
+ }
+
+ const CharT* cend() const BOOST_NOEXCEPT {
+ return finish;
+ }
private:
// Undefined:
- lexical_stream_limited_src(lexical_stream_limited_src const&);
- void operator=(lexical_stream_limited_src const&);
+ lexical_istream_limited_src(lexical_istream_limited_src const&);
+ void operator=(lexical_istream_limited_src const&);
/************************************ HELPER FUNCTIONS FOR OPERATORS << ( ... ) ********************************/
- bool shl_char(CharT ch) BOOST_NOEXCEPT
- {
- Traits::assign(*start, ch);
+ bool shl_char(CharT ch) BOOST_NOEXCEPT {
+ Traits::assign(buffer[0], ch);
finish = start + 1;
return true;
}
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
- bool shl_char(T ch)
- {
+ bool shl_char(T ch) {
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)) ,
"boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
@@ -1288,215 +1365,211 @@ namespace boost {
std::locale loc;
CharT const w = BOOST_USE_FACET(std::ctype<CharT>, loc).widen(ch);
#else
- CharT const w = ch;
+ CharT const w = static_cast<CharT>(ch);
#endif
- Traits::assign(*start, w);
+ Traits::assign(buffer[0], w);
finish = start + 1;
return true;
}
#endif
- bool shl_char_array(CharT const* str) BOOST_NOEXCEPT
- {
- start = const_cast<CharT*>(str);
+ bool shl_char_array(CharT const* str) BOOST_NOEXCEPT {
+ start = str;
finish = start + Traits::length(str);
return true;
}
template <class T>
- bool shl_char_array(T const* str)
- {
+ bool shl_char_array(T const* str) {
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)),
"boost::lexical_cast does not support narrowing of char types."
"Use boost::locale instead" );
return shl_input_streamable(str);
}
- bool shl_char_array_limited(CharT const* str, std::size_t max_size) BOOST_NOEXCEPT
- {
- start = const_cast<CharT*>(str);
+ bool shl_char_array_limited(CharT const* str, std::size_t max_size) BOOST_NOEXCEPT {
+ start = str;
finish = std::find(start, start + max_size, Traits::to_char_type(0));
return true;
}
template<typename InputStreamable>
- bool shl_input_streamable(InputStreamable& input)
- {
+ bool shl_input_streamable(InputStreamable& input) {
#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 unlocked_but_t* const p
- = static_cast<unlocked_but_t*>(out_stream.rdbuf()) ;
+ 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>
- inline bool shl_signed(T n)
- {
- start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
- if(n < 0)
- {
- --start;
+ inline bool shl_unsigned(const T n) {
+ CharT* tmp_finish = buffer + CharacterBufferSize;
+ start = lcast_put_unsigned<Traits, T, CharT>(n, tmp_finish).convert();
+ finish = tmp_finish;
+ return true;
+ }
+
+ template <class T>
+ inline bool shl_signed(const T n) {
+ CharT* tmp_finish = buffer + CharacterBufferSize;
+ typedef BOOST_DEDUCED_TYPENAME boost::make_unsigned<T>::type utype;
+ CharT* tmp_start = lcast_put_unsigned<Traits, utype, CharT>(lcast_to_unsigned(n), tmp_finish).convert();
+ if (n < 0) {
+ --tmp_start;
CharT const minus = lcast_char_constants<CharT>::minus;
- Traits::assign(*start, minus);
+ Traits::assign(*tmp_start, minus);
}
+ start = tmp_start;
+ finish = tmp_finish;
return true;
}
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;
+ bool shl_real_type(const T& val, SomeCharT* /*begin*/) {
lcast_set_precision(out_stream, &val);
return shl_input_streamable(val);
}
- static bool shl_real_type(float val, char* begin, char*& end)
- { using namespace std;
- if (put_inf_nan(begin, end, val)) return true;
+ bool shl_real_type(float val, char* begin) {
+ using namespace std;
const double val_as_double = val;
- end = begin +
+ finish = start +
#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
- sprintf_s(begin, end-begin,
+ sprintf_s(begin, CharacterBufferSize,
#else
sprintf(begin,
#endif
"%.*g", static_cast<int>(boost::detail::lcast_get_precision<float>()), val_as_double);
- return end > begin;
+ return finish > start;
}
- static bool shl_real_type(double val, char* begin, char*& end)
- { using namespace std;
- if (put_inf_nan(begin, end, val)) return true;
- end = begin +
+ bool shl_real_type(double val, char* begin) {
+ using namespace std;
+ finish = start +
#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
- sprintf_s(begin, end-begin,
+ sprintf_s(begin, CharacterBufferSize,
#else
sprintf(begin,
#endif
"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double>()), val);
- return end > begin;
+ return finish > start;
}
#ifndef __MINGW32__
- static bool shl_real_type(long double val, char* begin, char*& end)
- { using namespace std;
- if (put_inf_nan(begin, end, val)) return true;
- end = begin +
+ bool shl_real_type(long double val, char* begin) {
+ using namespace std;
+ finish = start +
#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
- sprintf_s(begin, end-begin,
+ sprintf_s(begin, CharacterBufferSize,
#else
sprintf(begin,
#endif
"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double>()), val );
- return end > begin;
+ return finish > start;
}
#endif
#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(begin, end, val)) return true;
+ bool shl_real_type(float val, wchar_t* begin) {
+ using namespace std;
const double val_as_double = val;
- end = begin + swprintf(begin, end-begin,
+ finish = start + swprintf(begin, CharacterBufferSize,
L"%.*g",
static_cast<int>(boost::detail::lcast_get_precision<float >()),
val_as_double );
- return end > begin;
+ return finish > start;
}
- static bool shl_real_type(double val, wchar_t* begin, wchar_t*& end)
- { using namespace std;
- if (put_inf_nan(begin, end, val)) return true;
- end = begin + swprintf(begin, end-begin,
+ bool shl_real_type(double val, wchar_t* begin) {
+ using namespace std;
+ finish = start + swprintf(begin, CharacterBufferSize,
L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
- return end > begin;
+ return finish > start;
}
- static bool shl_real_type(long double val, wchar_t* begin, wchar_t*& end)
- { using namespace std;
- if (put_inf_nan(begin, end, val)) return true;
- end = begin + swprintf(begin, end-begin,
+ bool shl_real_type(long double val, wchar_t* begin) {
+ using namespace std;
+ finish = start + swprintf(begin, CharacterBufferSize,
L"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
- return end > begin;
+ return finish > start;
}
#endif
+ template <class T>
+ bool shl_real(T val) {
+ CharT* tmp_finish = buffer + CharacterBufferSize;
+ if (put_inf_nan(buffer, tmp_finish, val)) {
+ finish = tmp_finish;
+ return true;
+ }
+
+ return shl_real_type(val, static_cast<CharT*>(buffer));
+ }
/************************************ OPERATORS << ( ... ) ********************************/
public:
template<class Alloc>
- bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
- {
- start = const_cast<CharT*>(str.data());
+ bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT {
+ start = str.data();
finish = start + str.length();
return true;
}
template<class Alloc>
- bool operator<<(::boost::container::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
- {
- start = const_cast<CharT*>(str.data());
+ bool operator<<(boost::container::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT {
+ start = str.data();
finish = start + str.length();
return true;
}
- bool operator<<(bool value) BOOST_NOEXCEPT
- {
+ bool operator<<(bool value) BOOST_NOEXCEPT {
CharT const czero = lcast_char_constants<CharT>::zero;
- Traits::assign(*start, Traits::to_char_type(czero + value));
+ Traits::assign(buffer[0], Traits::to_char_type(czero + value));
finish = start + 1;
return true;
}
- bool operator<<(const iterator_range<CharT*>& rng) BOOST_NOEXCEPT
- {
- start = rng.begin();
- finish = rng.end();
- return true;
+ template <class C>
+ BOOST_DEDUCED_TYPENAME boost::disable_if<boost::is_const<C>, bool>::type
+ operator<<(const iterator_range<C*>& rng) BOOST_NOEXCEPT {
+ return (*this) << iterator_range<const C*>(rng.begin(), rng.end());
}
- bool operator<<(const iterator_range<const CharT*>& rng) BOOST_NOEXCEPT
- {
- start = const_cast<CharT*>(rng.begin());
- finish = const_cast<CharT*>(rng.end());
+ bool operator<<(const iterator_range<const CharT*>& rng) BOOST_NOEXCEPT {
+ start = rng.begin();
+ finish = 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<const signed char*>& rng) BOOST_NOEXCEPT {
+ return (*this) << iterator_range<const char*>(
+ reinterpret_cast<const char*>(rng.begin()),
+ reinterpret_cast<const 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<<(const iterator_range<const unsigned char*>& rng) BOOST_NOEXCEPT {
+ return (*this) << iterator_range<const char*>(
+ reinterpret_cast<const char*>(rng.begin()),
+ reinterpret_cast<const char*>(rng.end())
);
}
@@ -1510,12 +1583,12 @@ namespace boost {
bool operator<<(wchar_t ch) { return shl_char(ch); }
#endif
#endif
-#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#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_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#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); }
@@ -1529,159 +1602,133 @@ namespace boost {
bool operator<<(short n) { return shl_signed(n); }
bool operator<<(int n) { return shl_signed(n); }
bool operator<<(long n) { return shl_signed(n); }
- bool operator<<(unsigned short n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
- bool operator<<(unsigned int n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
- bool operator<<(unsigned long n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+ bool operator<<(unsigned short n) { return shl_unsigned(n); }
+ bool operator<<(unsigned int n) { return shl_unsigned(n); }
+ bool operator<<(unsigned long n) { return shl_unsigned(n); }
#if defined(BOOST_HAS_LONG_LONG)
- bool operator<<(boost::ulong_long_type n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+ bool operator<<(boost::ulong_long_type n) { return shl_unsigned(n); }
bool operator<<(boost::long_long_type n) { return shl_signed(n); }
#elif defined(BOOST_HAS_MS_INT64)
- bool operator<<(unsigned __int64 n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+ bool operator<<(unsigned __int64 n) { return shl_unsigned(n); }
bool operator<<( __int64 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); }
+
+#ifdef BOOST_HAS_INT128
+ bool operator<<(const boost::uint128_type& n) { return shl_unsigned(n); }
+ bool operator<<(const boost::int128_type& n) { return shl_signed(n); }
+#endif
+ bool operator<<(float val) { return shl_real(val); }
+ bool operator<<(double val) { return shl_real(val); }
bool operator<<(long double val) {
#ifndef __MINGW32__
- return shl_real_type(val, start, finish);
+ return shl_real(val);
#else
- return shl_real_type(static_cast<double>(val), start, finish);
+ return shl_real(static_cast<double>(val));
#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)); }
+ // Adding constness to characters. Constness does not change layout
+ template <class C, std::size_t N>
+ BOOST_DEDUCED_TYPENAME boost::disable_if<boost::is_const<C>, bool>::type
+ operator<<(boost::array<C, N> const& input) BOOST_NOEXCEPT {
+ BOOST_STATIC_ASSERT_MSG(
+ (sizeof(boost::array<const C, N>) == sizeof(boost::array<C, N>)),
+ "boost::array<C, N> and boost::array<const C, N> must have exactly the same layout."
+ );
+ return ((*this) << reinterpret_cast<boost::array<const C, 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); }
+ 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)); }
+ 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)); }
+ bool operator<<(boost::array<const signed char, N> const& input) BOOST_NOEXCEPT {
+ return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input));
+ }
-#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
- template <std::size_t N>
- bool operator<<(std::array<CharT, N> const& input) BOOST_NOEXCEPT
- { return shl_char_array_limited(input.begin(), N); }
-
- 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)); }
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+ // Making a Boost.Array from std::array
+ template <class C, std::size_t N>
+ bool operator<<(std::array<C, N> const& input) BOOST_NOEXCEPT {
+ BOOST_STATIC_ASSERT_MSG(
+ (sizeof(std::array<C, N>) == sizeof(boost::array<C, N>)),
+ "std::array and boost::array must have exactly the same layout. "
+ "Bug in implementation of std::array or boost::array."
+ );
+ return ((*this) << reinterpret_cast<boost::array<C, N> const& >(input));
+ }
+#endif
+ template <class InStreamable>
+ bool operator<<(const InStreamable& input) { return shl_input_streamable(input); }
+ };
- template <std::size_t N>
- bool operator<<(std::array<const CharT, N> const& input) BOOST_NOEXCEPT
- { return shl_char_array_limited(input.begin(), N); }
- 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 CharT, class Traits>
+ class lexical_ostream_limited_src: boost::noncopyable {
+ //`[start, finish)` is the range to output by `operator >>`
+ const CharT* start;
+ const CharT* const finish;
- 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 // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
-
- template <class InStreamable>
- bool operator<<(const InStreamable& input) { return shl_input_streamable(input); }
+ public:
+ lexical_ostream_limited_src(const CharT* begin, const CharT* end) BOOST_NOEXCEPT
+ : start(begin)
+ , finish(end)
+ {}
/************************************ HELPER FUNCTIONS FOR OPERATORS >> ( ... ) ********************************/
private:
-
template <typename Type>
- bool shr_unsigned(Type& output)
- {
+ bool shr_unsigned(Type& output) {
if (start == finish) return false;
CharT const minus = lcast_char_constants<CharT>::minus;
CharT const plus = lcast_char_constants<CharT>::plus;
- bool has_minus = false;
+ bool const has_minus = Traits::eq(minus, *start);
/* We won`t use `start' any more, so no need in decrementing it after */
- if ( Traits::eq(minus,*start) )
- {
- ++start;
- has_minus = true;
- } else if ( Traits::eq( plus, *start ) )
- {
+ if (has_minus || Traits::eq(plus, *start)) {
++start;
}
- 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
+ bool const succeed = lcast_ret_unsigned<Traits, Type, CharT>(output, start, finish).convert();
+
+ if (has_minus) {
+ output = static_cast<Type>(0u - output);
+ }
+
return succeed;
}
template <typename Type>
- bool shr_signed(Type& output)
- {
+ bool shr_signed(Type& output) {
if (start == finish) return false;
CharT const minus = lcast_char_constants<CharT>::minus;
CharT const plus = lcast_char_constants<CharT>::plus;
typedef BOOST_DEDUCED_TYPENAME make_unsigned<Type>::type utype;
- utype out_tmp =0;
- bool has_minus = false;
+ utype out_tmp = 0;
+ bool const has_minus = Traits::eq(minus, *start);
/* We won`t use `start' any more, so no need in decrementing it after */
- if ( Traits::eq(minus,*start) )
- {
- ++start;
- has_minus = true;
- } else if ( Traits::eq(plus, *start) )
- {
+ if (has_minus || Traits::eq(plus, *start)) {
++start;
}
- bool succeed = lcast_ret_unsigned<Traits>(out_tmp, start, finish);
+ bool succeed = lcast_ret_unsigned<Traits, utype, CharT>(out_tmp, start, finish).convert();
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;
- output = out_tmp;
+ output = static_cast<Type>(out_tmp);
}
return succeed;
}
@@ -1689,51 +1736,54 @@ namespace boost {
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 )
-#endif
- if(is_pointer<InputStreamable>::value)
- return false;
+ 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)
- // If you have compilation error at this point, than your STL library
- // unsupports such conversions. Try updating it.
- BOOST_STATIC_ASSERT((boost::is_same<char, CharT>::value));
+ 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
+ typedef BOOST_DEDUCED_TYPENAME out_stream_helper_trait<CharT, Traits>::buffer_t
+ buffer_t;
#if defined(BOOST_NO_STRINGSTREAM)
std::istrstream stream(start, finish - start);
-#elif defined(BOOST_NO_STD_LOCALE)
- std::istringstream stream;
#else
- std::basic_istringstream<CharT, Traits> stream;
-#endif
- static_cast<unlocked_but_t*>(stream.rdbuf())
- ->setg(start, start, finish);
+ buffer_t buf;
+ // Usually `istream` and `basic_istream` do not modify
+ // content of buffer; `buffer_t` assures that this is true
+ buf.setbuf(const_cast<CharT*>(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)
- // GCC 2.9x lacks std::char_traits<>::eof().
- // We use BOOST_NO_STD_WSTRING to filter out STLport and libstdc++-v3
- // configurations, which do provide std::char_traits<>::eof().
- EOF;
-#else
- Traits::eof();
+ return (stream >> output)
+ && (stream.get() == Traits::eof());
+
+#ifndef BOOST_NO_EXCEPTIONS
+ } catch (const ::std::ios_base::failure& /*f*/) {
+ return false;
+ }
#endif
}
template<class T>
- inline bool shr_xchar(T& output)
- {
+ inline bool shr_xchar(T& output) BOOST_NOEXCEPT {
BOOST_STATIC_ASSERT_MSG(( sizeof(CharT) == sizeof(T) ),
"boost::lexical_cast does not support narrowing of character types."
"Use boost::locale instead" );
@@ -1746,8 +1796,21 @@ namespace boost {
return ok;
}
+ template <std::size_t N, class ArrayT>
+ bool shr_std_array(ArrayT& output) BOOST_NOEXCEPT {
+ using namespace std;
+ const std::size_t size = static_cast<std::size_t>(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;
+ }
+
/************************************ 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); }
@@ -1761,113 +1824,91 @@ namespace boost {
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
-#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool operator>>(char16_t& output) { return shr_xchar(output); }
#endif
-#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
bool operator>>(char32_t& output) { return shr_xchar(output); }
#endif
template<class Alloc>
- bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
+ bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) {
+ str.assign(start, finish); return true;
+ }
template<class Alloc>
- 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.begin(), start, size * sizeof(CharT));
- *(output.begin() + size) = Traits::to_char_type(0);
- return true;
+ bool operator>>(boost::container::basic_string<CharT,Traits,Alloc>& str) {
+ str.assign(start, finish); return true;
}
- public:
-
template <std::size_t N>
- bool operator>>(boost::array<CharT, N>& output) BOOST_NOEXCEPT
- {
+ 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)
- {
+ bool operator>>(boost::array<unsigned char, N>& output) BOOST_NOEXCEPT {
return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
}
template <std::size_t N>
- bool operator>>(boost::array<signed char, N>& output)
- {
+ bool operator>>(boost::array<signed char, N>& output) BOOST_NOEXCEPT {
return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
}
-#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_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>& in)
- {
- return ((*this) >> reinterpret_cast<std::array<char, N>& >(output));
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+ template <class C, std::size_t N>
+ bool operator>>(std::array<C, N>& output) BOOST_NOEXCEPT {
+ BOOST_STATIC_ASSERT_MSG(
+ (sizeof(boost::array<C, N>) == sizeof(boost::array<C, N>)),
+ "std::array<C, N> and boost::array<C, N> must have exactly the same layout."
+ );
+ return ((*this) >> reinterpret_cast<boost::array<C, N>& >(output));
}
-#endif // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+#endif
+ bool operator>>(bool& output) BOOST_NOEXCEPT {
+ output = false; // Suppress warning about uninitalized variable
- /*
- * case "-0" || "0" || "+0" : output = false; return true;
- * case "1" || "+1": output = true; return true;
- * default: return false;
- */
- bool operator>>(bool& output) BOOST_NOEXCEPT
- {
+ if (start == finish) return false;
CharT const zero = lcast_char_constants<CharT>::zero;
CharT const plus = lcast_char_constants<CharT>::plus;
CharT const minus = lcast_char_constants<CharT>::minus;
- switch(finish-start)
- {
- case 1:
- output = Traits::eq(start[0], zero+1);
- return output || Traits::eq(start[0], zero );
- case 2:
- if ( Traits::eq( plus, *start) )
- {
- ++start;
- output = Traits::eq(start[0], zero +1);
- return output || Traits::eq(start[0], zero );
- } else
- {
- output = false;
- return Traits::eq( minus, *start)
- && Traits::eq( zero, start[1]);
- }
- default:
- output = false; // Suppress warning about uninitalized variable
- return false;
+ const CharT* const dec_finish = finish - 1;
+ output = Traits::eq(*dec_finish, zero + 1);
+ if (!output && !Traits::eq(*dec_finish, zero)) {
+ return false; // Does not ends on '0' or '1'
+ }
+
+ if (start == dec_finish) return true;
+
+ // We may have sign at the beginning
+ if (Traits::eq(plus, *start) || (Traits::eq(minus, *start) && !output)) {
+ ++ start;
+ }
+
+ // Skipping zeros
+ while (start != dec_finish) {
+ if (!Traits::eq(zero, *start)) {
+ return false; // Not a zero => error
+ }
+
+ ++ start;
}
+
+ return true;
}
bool operator>>(float& output) { return lcast_ret_float<Traits>(output,start,finish); }
@@ -1877,7 +1918,7 @@ namespace boost {
template <class T>
bool float_types_converter_internal(T& output, int /*tag*/) {
if (parse_inf_nan(start, finish, output)) return true;
- bool return_value = shr_using_base_class(output);
+ bool const return_value = shr_using_base_class(output);
/* Some compilers and libraries successfully
* parse 'inf', 'INFINITY', '1.0E', '1.0E-'...
@@ -1902,13 +1943,12 @@ namespace boost {
}
// Optimised converter
- bool float_types_converter_internal(double& output,char /*tag*/) {
- return lcast_ret_float<Traits>(output,start,finish);
+ bool float_types_converter_internal(double& output, char /*tag*/) {
+ return lcast_ret_float<Traits>(output, start, finish);
}
public:
- bool operator>>(double& output)
- {
+ bool operator>>(double& output) {
/*
* Some compilers implement long double as double. In that case these types have
* same size, same precision, same max and min values... And it means,
@@ -1916,10 +1956,10 @@ namespace boost {
* 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
@@ -1928,299 +1968,239 @@ namespace boost {
return float_types_converter_internal(output, tag);
}
- bool operator>>(long double& output)
- {
+ bool operator>>(long double& output) {
int tag = 0;
return float_types_converter_internal(output, tag);
}
// Generic istream-based algorithm.
// lcast_streambuf_for_target<InputStreamable>::value is true.
- template<typename InputStreamable>
- bool operator>>(InputStreamable& output) { return shr_using_base_class(output); }
+ template <typename InputStreamable>
+ bool operator>>(InputStreamable& output) {
+ return shr_using_base_class(output);
+ }
};
}
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 = false );
- };
+ : boost::false_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
struct is_stdstring< std::basic_string<CharT, Traits, Alloc> >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ : boost::true_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
- struct is_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc> >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ struct is_stdstring< boost::container::basic_string<CharT, Traits, Alloc> >
+ : boost::true_type
+ {};
template<typename Target, typename Source>
struct is_arithmetic_and_not_xchars
{
- BOOST_STATIC_CONSTANT(bool, value =
- (
- ::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<
- detail::is_char_or_wchar<Source>::value
- >::value
- >::value
- )
- );
+ BOOST_STATIC_CONSTANT(bool, value = (
+ boost::type_traits::ice_and<
+ boost::type_traits::ice_not<
+ boost::detail::is_character<Target>::value
+ >::value,
+ boost::type_traits::ice_not<
+ boost::detail::is_character<Source>::value
+ >::value,
+ boost::is_arithmetic<Source>::value,
+ boost::is_arithmetic<Target>::value
+ >::value
+ ));
};
/*
- * is_xchar_to_xchar<Target, Source>::value is true, when
- * Target and Souce are the same char types, or when
- * Target and Souce are char types of the same size.
+ * is_xchar_to_xchar<Target, Source>::value is true,
+ * Target and Souce are char types of the same size 1 (char, signed char, unsigned char).
*/
template<typename Target, typename Source>
- struct is_xchar_to_xchar
- {
- BOOST_STATIC_CONSTANT(bool, value =
- (
- ::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,
- is_char_or_wchar<Target>::value,
- is_char_or_wchar<Source>::value
- >::value
- >::value
- )
- );
- };
-
-
- // 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
+ struct is_xchar_to_xchar
+ {
+ BOOST_STATIC_CONSTANT(bool, value = (
+ boost::type_traits::ice_and<
+ boost::type_traits::ice_eq<sizeof(Source), sizeof(Target)>::value,
+ boost::type_traits::ice_eq<sizeof(Source), sizeof(char)>::value,
+ boost::detail::is_character<Target>::value,
+ boost::detail::is_character<Source>::value
>::value
-#else
- ::boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value
-#endif
- > result_type;
-
- BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+ ));
};
template<typename Target, typename Source>
struct is_char_array_to_stdstring
- {
- BOOST_STATIC_CONSTANT(bool, value = false );
- };
+ : boost::false_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
struct is_char_array_to_stdstring< std::basic_string<CharT, Traits, Alloc>, CharT* >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ : boost::true_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
struct is_char_array_to_stdstring< std::basic_string<CharT, Traits, Alloc>, const CharT* >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ : boost::true_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
- struct is_char_array_to_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
+ : boost::true_type
+ {};
template<typename CharT, typename Traits, typename Alloc>
- struct is_char_array_to_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc>, const CharT* >
- {
- BOOST_STATIC_CONSTANT(bool, value = true );
- };
+ struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, const CharT* >
+ : boost::true_type
+ {};
-#if (defined _MSC_VER)
-# pragma warning( push )
-# pragma warning( disable : 4701 ) // possible use of ... before initialization
-# pragma warning( disable : 4702 ) // unreachable code
-# pragma warning( disable : 4267 ) // conversion from 'size_t' to 'unsigned int'
-#endif
template<typename Target, typename Source>
- struct lexical_cast_do_cast
+ struct lexical_converter_impl
{
- 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 ::boost::remove_cv<src>::type no_cv_src;
- typedef BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type target_char_t;
- typedef BOOST_DEDUCED_TYPENAME detail::stream_char<no_cv_src>::type src_char_type;
- typedef BOOST_DEDUCED_TYPENAME detail::widest_char<
- target_char_t, src_char_type
- >::type char_type;
-
-#if !defined(BOOST_NO_CHAR16_T) && defined(BOOST_NO_UNICODE_LITERALS)
- BOOST_STATIC_ASSERT_MSG(( !::boost::is_same<char16_t, src_char_type>::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_CHAR32_T) && defined(BOOST_NO_UNICODE_LITERALS)
- BOOST_STATIC_ASSERT_MSG(( !::boost::is_same<char32_t, src_char_type>::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::detail::is_char_or_wchar<src_char_type>::value, // source is lexical type
- ::boost::detail::is_char_or_wchar<target_char_t>::value, // target is a lexical type
- ::boost::is_same<char, src_char_type>::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
- > is_string_widening_required_t;
-
- typedef ::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<src_char_type >::value
- > is_source_input_optimized_t;
-
- // Target type must be default constructible
- Target result;
-
- // If we have an optimized conversion for
- // Source, we do not need to construct stringbuf.
- const bool requires_stringbuf = ::boost::type_traits::ice_or<
- is_string_widening_required_t::value,
- ::boost::type_traits::ice_not< is_source_input_optimized_t::value >::value
- >::value;
-
- typedef detail::lexical_stream_limited_src<char_type, traits, requires_stringbuf > interpreter_type;
-
- typedef detail::lcast_src_length<no_cv_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();
-
- interpreter_type interpreter(buf, buf + src_len);
+ typedef lexical_cast_stream_traits<Source, Target> stream_trait;
+
+ typedef detail::lexical_istream_limited_src<
+ BOOST_DEDUCED_TYPENAME stream_trait::char_type,
+ BOOST_DEDUCED_TYPENAME stream_trait::traits,
+ stream_trait::requires_stringbuf,
+ stream_trait::len_t::value + 1
+ > i_interpreter_type;
+
+ typedef detail::lexical_ostream_limited_src<
+ BOOST_DEDUCED_TYPENAME stream_trait::char_type,
+ BOOST_DEDUCED_TYPENAME stream_trait::traits
+ > o_interpreter_type;
+
+ static inline bool try_convert(const Source& arg, Target& result) {
+ i_interpreter_type i_interpreter;
// Disabling ADL, by directly specifying operators.
- if(!(interpreter.operator <<(arg) && interpreter.operator >>(result)))
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+ if (!(i_interpreter.operator <<(arg)))
+ return false;
- return result;
+ o_interpreter_type out(i_interpreter.cbegin(), i_interpreter.cend());
+
+ // Disabling ADL, by directly specifying operators.
+ if(!(out.operator >>(result)))
+ return false;
+
+ return true;
}
};
-#if (defined _MSC_VER)
-# pragma warning( pop )
-#endif
- template <typename Source>
- struct lexical_cast_copy
+ template <typename Target, typename Source>
+ struct copy_converter_impl
{
- static inline const Source& lexical_cast_impl(const Source &arg) BOOST_NOEXCEPT
- {
- return arg;
+// MSVC fail to forward an array (DevDiv#555157 "SILENT BAD CODEGEN triggered by perfect forwarding",
+// fixed in 2013 RTM).
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && (!defined(BOOST_MSVC) || BOOST_MSVC >= 1800)
+ template <class T>
+ static inline bool try_convert(T&& arg, Target& result) {
+ result = static_cast<T&&>(arg); // eqaul to `result = std::forward<T>(arg);`
+ return true;
+ }
+#else
+ static inline bool try_convert(const Source& arg, Target& result) {
+ result = arg;
+ return true;
}
+#endif
};
- template <class Source, class Target >
+ template <class Source >
struct detect_precision_loss
{
- typedef boost::numeric::Trunc<Source> Rounder;
- typedef Source source_type ;
+ typedef Source source_type;
+ typedef boost::numeric::Trunc<Source> Rounder;
+ typedef BOOST_DEDUCED_TYPENAME mpl::if_<
+ boost::is_arithmetic<Source>, Source, Source const&
+ >::type argument_type ;
- typedef BOOST_DEDUCED_TYPENAME mpl::if_<
- ::boost::is_arithmetic<Source>, Source, Source const&
- >::type argument_type ;
+ static inline source_type nearbyint(argument_type s, bool& is_ok) BOOST_NOEXCEPT {
+ const source_type near_int = Rounder::nearbyint(s);
+ if (near_int && is_ok) {
+ const source_type orig_div_round = s / near_int;
+ const source_type eps = std::numeric_limits<source_type>::epsilon();
- static source_type nearbyint ( argument_type s )
- {
- const source_type orig_div_round = s / Rounder::nearbyint(s);
- const source_type eps = std::numeric_limits<source_type>::epsilon();
+ is_ok = !((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps);
+ }
+
+ return s;
+ }
- if ((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps)
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+ typedef typename Rounder::round_style round_style;
+ };
- return s ;
- }
+ template <typename Base, class Source>
+ struct fake_precision_loss: public Base
+ {
+ typedef Source source_type ;
+ typedef BOOST_DEDUCED_TYPENAME mpl::if_<
+ boost::is_arithmetic<Source>, Source, Source const&
+ >::type argument_type ;
- typedef typename Rounder::round_style round_style;
- } ;
+ static inline source_type nearbyint(argument_type s, bool& /*is_ok*/) BOOST_NOEXCEPT {
+ return s;
+ }
+ };
- 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);
- }
- } ;
+ inline bool operator() ( boost::numeric::range_check_result r ) const BOOST_NOEXCEPT {
+ return (r == boost::numeric::cInRange);
+ }
+ };
+
+ template <typename Target, typename Source>
+ inline bool noexcept_numeric_convert(const Source& arg, Target& result) BOOST_NOEXCEPT {
+ typedef boost::numeric::converter<
+ Target,
+ Source,
+ boost::numeric::conversion_traits<Target, Source >,
+ nothrow_overflow_handler,
+ detect_precision_loss<Source >
+ > converter_orig_t;
+
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ boost::is_base_of< detect_precision_loss<Source >, converter_orig_t >::value,
+ converter_orig_t,
+ fake_precision_loss<converter_orig_t, Source>
+ >::type converter_t;
+
+ bool res = nothrow_overflow_handler()(converter_t::out_of_range(arg));
+ result = converter_t::low_level_convert(converter_t::nearbyint(arg, res));
+ return res;
+ }
template <typename Target, typename Source>
struct lexical_cast_dynamic_num_not_ignoring_minus
{
- static inline Target lexical_cast_impl(const Source &arg)
- {
- return boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- nothrow_overflow_handler<Source, Target>,
- detect_precision_loss<Source, Target>
- >::convert(arg);
+ static inline bool try_convert(const Source &arg, Target& result) BOOST_NOEXCEPT {
+ return noexcept_numeric_convert<Target, Source >(arg, result);
}
};
template <typename Target, typename Source>
struct lexical_cast_dynamic_num_ignoring_minus
{
- static inline Target lexical_cast_impl(const Source &arg)
- {
- typedef boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- nothrow_overflow_handler<Source, Target>,
- detect_precision_loss<Source, Target>
- > converter_t;
-
- return (
- arg < 0 ? -converter_t::convert(-arg) : converter_t::convert(arg)
- );
+ static inline bool try_convert(const Source &arg, Target& result) BOOST_NOEXCEPT {
+ 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;
+
+ if (arg < 0) {
+ const bool res = noexcept_numeric_convert<Target, usource_t>(0u - arg, result);
+ result = static_cast<Target>(0u - result);
+ return res;
+ } else {
+ return noexcept_numeric_convert<Target, usource_t>(arg, result);
+ }
}
};
@@ -2243,61 +2223,100 @@ namespace boost {
* and the result will be the two's complement.
*/
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
+ struct dynamic_num_converter_impl
+ {
+ static inline bool try_convert(const Source &arg, Target& result) BOOST_NOEXCEPT {
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ boost::type_traits::ice_and<
+ boost::is_unsigned<Target>::value,
+ boost::type_traits::ice_or<
+ boost::is_signed<Source>::value,
+ boost::is_float<Source>::value
>::value,
- ::boost::type_traits::ice_not<
- ::boost::is_same<Source, bool>::value
+ boost::type_traits::ice_not<
+ boost::is_same<Source, bool>::value
>::value,
- ::boost::type_traits::ice_not<
- ::boost::is_same<Target, bool>::value
- >::value,
- ::boost::is_unsigned<Target>::value
+ boost::type_traits::ice_not<
+ boost::is_same<Target, bool>::value
+ >::value
>::value,
lexical_cast_dynamic_num_ignoring_minus<Target, Source>,
lexical_cast_dynamic_num_not_ignoring_minus<Target, Source>
>::type caster_type;
- return caster_type::lexical_cast_impl(arg);
+ return caster_type::try_convert(arg, result);
}
};
}
+ namespace conversion { namespace detail {
+
+ template <typename Target, typename Source>
+ inline bool try_lexical_convert(const Source& arg, Target& result)
+ {
+ 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,
+ boost::type_traits::ice_and<
+ boost::is_same<Target, src >::value,
+ boost::detail::is_character<Target >::value
+ >::value
+ > shall_we_copy_t;
+
+ typedef boost::detail::is_arithmetic_and_not_xchars<Target, src >
+ shall_we_copy_with_dynamic_check_t;
+
+ // We do evaluate second `if_` lazily to avoid unnecessary instantiations
+ // of `shall_we_copy_with_dynamic_check_t` and improve compilation times.
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ shall_we_copy_t::value,
+ boost::mpl::identity<boost::detail::copy_converter_impl<Target, src > >,
+ boost::mpl::if_<
+ shall_we_copy_with_dynamic_check_t,
+ boost::detail::dynamic_num_converter_impl<Target, src >,
+ boost::detail::lexical_converter_impl<Target, src >
+ >
+ >::type caster_type_lazy;
+
+ typedef BOOST_DEDUCED_TYPENAME caster_type_lazy::type caster_type;
+
+ return caster_type::try_convert(arg, result);
+ }
+
+ template <typename Target, typename CharacterT>
+ inline bool try_lexical_convert(const CharacterT* chars, std::size_t count, Target& result)
+ {
+ BOOST_STATIC_ASSERT_MSG(
+ boost::detail::is_character<CharacterT>::value,
+ "This overload of try_lexical_convert is meant to be used only with arrays of characters."
+ );
+ return ::boost::conversion::detail::try_lexical_convert(
+ ::boost::iterator_range<const CharacterT*>(chars, chars + count), result
+ );
+ }
+
+ }} // namespace conversion::detail
+
+ namespace conversion {
+ // ADL barrier
+ using ::boost::conversion::detail::try_lexical_convert;
+ }
+
template <typename Target, typename Source>
inline Target lexical_cast(const Source &arg)
{
- 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
- > shall_we_copy_t;
-
- typedef BOOST_DEDUCED_TYPENAME
- ::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);
+ Target result;
+
+ if (!boost::conversion::detail::try_lexical_convert(arg, result))
+ BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+
+ return result;
}
template <typename Target>
@@ -2308,7 +2327,6 @@ namespace boost {
);
}
-
template <typename Target>
inline Target lexical_cast(const unsigned char* chars, std::size_t count)
{
@@ -2334,7 +2352,7 @@ namespace boost {
);
}
#endif
-#ifndef BOOST_NO_CHAR16_T
+#ifndef BOOST_NO_CXX11_CHAR16_T
template <typename Target>
inline Target lexical_cast(const char16_t* chars, std::size_t count)
{
@@ -2343,7 +2361,7 @@ namespace boost {
);
}
#endif
-#ifndef BOOST_NO_CHAR32_T
+#ifndef BOOST_NO_CXX11_CHAR32_T
template <typename Target>
inline Target lexical_cast(const char32_t* chars, std::size_t count)
{
@@ -2355,7 +2373,7 @@ namespace boost {
} // namespace boost
-#else // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#else
namespace boost {
namespace detail
@@ -2428,16 +2446,7 @@ namespace boost {
{
return !is_pointer<InputStreamable>::value &&
stream >> output &&
- stream.get() ==
-#if defined(__GNUC__) && (__GNUC__<3) && defined(BOOST_NO_STD_WSTRING)
-// GCC 2.9x lacks std::char_traits<>::eof().
-// We use BOOST_NO_STD_WSTRING to filter out STLport and libstdc++-v3
-// configurations, which do provide std::char_traits<>::eof().
-
- EOF;
-#else
- traits_type::eof();
-#endif
+ stream.get() == traits_type::eof();
}
bool operator>>(std::string &output)
@@ -2492,7 +2501,7 @@ namespace boost {
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
-// Copyright Antony Polukhin, 2011-2012.
+// Copyright Antony Polukhin, 2011-2014.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at