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-rw-r--r--boost/lexical_cast.hpp1172
1 files changed, 712 insertions, 460 deletions
diff --git a/boost/lexical_cast.hpp b/boost/lexical_cast.hpp
index 5a3d4f072a..acfc3e85f0 100644
--- a/boost/lexical_cast.hpp
+++ b/boost/lexical_cast.hpp
@@ -26,58 +26,22 @@
#define BOOST_LCAST_NO_WCHAR_T
#endif
-#if (defined(__MINGW32__) || defined(__MINGW64__)) && (__GNUC__ == 4) \
- && ((__GNUC_MINOR__ == 4) || (__GNUC_MINOR__ == 5)) && defined(__STRICT_ANSI__) \
- && !defined(BOOST_LCAST_NO_WCHAR_T)
-
-// workaround for a mingw bug
-// http://sourceforge.net/tracker/index.php?func=detail&aid=2373234&group_id=2435&atid=102435
-#include <_mingw.h>
-#if (__GNUC_MINOR__ == 4)
-extern "C" {
-_CRTIMP int __cdecl swprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-_CRTIMP int __cdecl vswprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-}
-#endif
-#if (__GNUC_MINOR__ == 5)
-extern "C" {
-_CRTIMP int __cdecl swprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , ...);
-_CRTIMP int __cdecl vswprintf(wchar_t * __restrict__ , const wchar_t * __restrict__ , va_list);
-}
-#endif
-#endif
-
#include <climits>
#include <cstddef>
-#include <istream>
#include <string>
#include <cstring>
#include <cstdio>
#include <typeinfo>
#include <exception>
-#include <cmath>
#include <boost/limits.hpp>
#include <boost/mpl/if.hpp>
#include <boost/throw_exception.hpp>
-#include <boost/type_traits/is_pointer.hpp>
-#include <boost/type_traits/is_integral.hpp>
-#include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/type_traits/remove_pointer.hpp>
-#include <boost/numeric/conversion/cast.hpp>
#include <boost/type_traits/ice.hpp>
-#include <boost/type_traits/make_unsigned.hpp>
-#include <boost/type_traits/is_signed.hpp>
-#include <boost/math/special_functions/sign.hpp>
-#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/type_traits/is_pointer.hpp>
#include <boost/static_assert.hpp>
#include <boost/detail/lcast_precision.hpp>
#include <boost/detail/workaround.hpp>
-#if !defined(__SUNPRO_CC)
-#include <boost/container/container_fwd.hpp>
-#endif // !defined(__SUNPRO_CC)
-#ifndef BOOST_NO_CWCHAR
-# include <cwchar>
-#endif
+
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
@@ -104,7 +68,7 @@ _CRTIMP int __cdecl vswprintf(wchar_t * __restrict__ , const wchar_t * __restric
namespace boost
{
// exception used to indicate runtime lexical_cast failure
- class bad_lexical_cast :
+ class BOOST_SYMBOL_VISIBLE bad_lexical_cast :
// workaround MSVC bug with std::bad_cast when _HAS_EXCEPTIONS == 0
#if defined(BOOST_MSVC) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS
public std::exception
@@ -157,118 +121,201 @@ namespace boost
const std::type_info *target;
};
- namespace detail // selectors for choosing stream character type
- {
- template<typename Type>
- struct stream_char
+ namespace detail // widest_char
{
- typedef char type;
- };
+ template <typename TargetChar, typename SourceChar>
+ struct widest_char
+ {
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ (sizeof(TargetChar) > sizeof(SourceChar))
+ , TargetChar
+ , SourceChar >::type type;
+ };
+ }
+} // namespace boost
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- template<class CharT, class Traits, class Alloc>
- struct stream_char< std::basic_string<CharT,Traits,Alloc> >
- {
- typedef CharT type;
- };
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) && !defined(__PGIC__)
-#if !defined(__SUNPRO_CC)
- template<class CharT, class Traits, class Alloc>
- struct stream_char< ::boost::container::basic_string<CharT,Traits,Alloc> >
- {
- typedef CharT type;
- };
-#endif // !defined(__SUNPRO_CC)
+#include <cmath>
+#include <istream>
+
+#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+#include <array>
#endif
-#ifndef BOOST_LCAST_NO_WCHAR_T
-#ifndef BOOST_NO_INTRINSIC_WCHAR_T
- template<>
- struct stream_char<wchar_t>
- {
- typedef wchar_t type;
- };
+#include <boost/array.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+#include <boost/type_traits/is_signed.hpp>
+#include <boost/type_traits/is_integral.hpp>
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/remove_pointer.hpp>
+#include <boost/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>
+#ifndef BOOST_NO_CWCHAR
+# include <cwchar>
#endif
- template<>
- struct stream_char<wchar_t *>
+namespace boost {
+ namespace detail // widest_char<...> (continuation)
{
- typedef wchar_t type;
- };
+ struct not_a_character_type{};
- template<>
- struct stream_char<const wchar_t *>
- {
- typedef wchar_t type;
- };
+ template <typename CharT>
+ struct widest_char<not_a_character_type, CharT >
+ {
+ typedef CharT type;
+ };
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- template<>
- struct stream_char<std::wstring>
+ 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
{
- typedef wchar_t type;
- };
-#endif
-#endif
+ // returns true, if T is one of the character types
+ template <typename T>
+ struct is_char_or_wchar
+ {
+ typedef ::boost::type_traits::ice_or<
+ ::boost::is_same< T, char >::value,
+ #ifndef BOOST_LCAST_NO_WCHAR_T
+ ::boost::is_same< T, wchar_t >::value,
+ #endif
+ #ifndef BOOST_NO_CHAR16_T
+ ::boost::is_same< T, char16_t >::value,
+ #endif
+ #ifndef BOOST_NO_CHAR32_T
+ ::boost::is_same< T, char32_t >::value,
+ #endif
+ ::boost::is_same< T, unsigned char >::value,
+ ::boost::is_same< T, signed char >::value
+ > result_type;
+
+ BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+ };
+ // 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
+ {
+ typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+ is_char_or_wchar<Type >::value,
+ Type,
+ boost::detail::not_a_character_type
+ >::type type;
+ };
-#ifndef BOOST_NO_CHAR16_T
+ template <>
+ struct stream_char<unsigned char>
+ {
+ typedef char type;
+ };
- template<>
- struct stream_char<char16_t>
- {
- typedef char16_t type;
- };
+ template <>
+ struct stream_char<signed char>
+ {
+ typedef char type;
+ };
- template<>
- struct stream_char<char16_t *>
- {
- typedef char16_t type;
- };
+ template <typename CharT>
+ struct stream_char<CharT*>
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
+ };
- template<>
- struct stream_char<const char16_t *>
- {
- typedef char16_t type;
- };
+ template <typename CharT>
+ struct stream_char<const CharT*>
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
+ };
-#endif
+ template <typename CharT>
+ struct stream_char<iterator_range<CharT*> >
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char<CharT*>::type type;
+ };
+
+ template <typename CharT>
+ struct stream_char<iterator_range<const CharT*> >
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char<const CharT*>::type type;
+ };
-#ifndef BOOST_NO_CHAR32_T
+ template <class CharT, class Traits, class Alloc>
+ struct stream_char< std::basic_string<CharT, Traits, Alloc> >
+ {
+ typedef CharT type;
+ };
- template<>
- struct stream_char<char32_t>
- {
- typedef char32_t type;
- };
+ template <class CharT, class Traits, class Alloc>
+ struct stream_char< ::boost::container::basic_string<CharT, Traits, Alloc> >
+ {
+ typedef CharT type;
+ };
- template<>
- struct stream_char<char32_t *>
- {
- typedef char32_t 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<>
- struct stream_char<const char32_t *>
- {
- typedef char32_t type;
- };
+ template<typename CharT, std::size_t N>
+ struct stream_char<boost::array<const CharT, N> >
+ {
+ typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
+ };
-#endif
+#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;
+ };
- template<typename TargetChar, typename SourceChar>
- struct widest_char
+ template <typename CharT, std::size_t N>
+ struct stream_char<std::array<const CharT, N> >
{
- typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
- (sizeof(TargetChar) > sizeof(SourceChar))
- , TargetChar
- , SourceChar >::type type;
+ typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type;
};
+#endif // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && defined(BOOST_NO_INTRINSIC_WCHAR_T)
+ template<>
+ struct stream_char<wchar_t>
+ {
+ typedef boost::detail::not_a_character_type type;
+ };
+
+ template<>
+ struct stream_char<wchar_t*>
+ {
+ typedef wchar_t type;
+ };
+
+ template<>
+ struct stream_char<const wchar_t*>
+ {
+ typedef wchar_t type;
+ };
+#endif
}
namespace detail // deduce_char_traits template
{
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
template<class CharT, class Target, class Source>
struct deduce_char_traits
{
@@ -293,7 +340,6 @@ namespace boost
typedef Traits type;
};
-#if !defined(__SUNPRO_CC)
template<class CharT, class Traits, class Alloc, class Source>
struct deduce_char_traits< CharT
, ::boost::container::basic_string<CharT,Traits,Alloc>
@@ -333,7 +379,7 @@ namespace boost
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>
+ , ::std::basic_string<CharT,Traits,Alloc2>
>
{
typedef Traits type;
@@ -341,14 +387,12 @@ namespace boost
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,Alloc1>
, ::boost::container::basic_string<CharT,Traits,Alloc2>
>
{
typedef Traits type;
};
-#endif // !defined(__SUNPRO_CC)
-#endif
}
namespace detail // lcast_src_length
@@ -391,7 +435,7 @@ namespace boost
BOOST_STATIC_ASSERT(sizeof(Source) * CHAR_BIT <= 256);
#endif
};
-// TODO: FIX for char16_t, char32_t, we can ignore CharT
+
#define BOOST_LCAST_DEF(T) \
template<> struct lcast_src_length<T> \
: lcast_src_length_integral<T> \
@@ -488,7 +532,7 @@ namespace boost
};
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
template<>
struct lcast_char_constants<char16_t>
{
@@ -501,7 +545,7 @@ namespace boost
};
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
template<>
struct lcast_char_constants<char32_t>
{
@@ -732,6 +776,15 @@ namespace boost
namespace detail
{
+ template <class CharT>
+ bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) {
+ for( unsigned int i=0; i < len; ++i ) {
+ if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false;
+ }
+
+ return true;
+ }
+
/* Returns true and sets the correct value if found NaN or Inf. */
template <class CharT, class T>
inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value
@@ -755,7 +808,7 @@ namespace boost
else if( *begin == plus ) ++begin;
if( end-begin < 3 ) return false;
- if( !memcmp(begin, lc_nan, 3*sizeof(CharT)) || !memcmp(begin, lc_NAN, 3*sizeof(CharT)) )
+ if( lc_iequal(begin, lc_nan, lc_NAN, 3) )
{
begin += 3;
if (end != begin) /* It is 'nan(...)' or some bad input*/
@@ -772,13 +825,13 @@ namespace boost
if (( /* 'INF' or 'inf' */
end-begin==3
&&
- (!memcmp(begin, lc_infinity, 3*sizeof(CharT)) || !memcmp(begin, lc_INFINITY, 3*sizeof(CharT)))
+ lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
)
||
( /* 'INFINITY' or 'infinity' */
end-begin==inifinity_size
&&
- (!memcmp(begin, lc_infinity, inifinity_size)|| !memcmp(begin, lc_INFINITY, inifinity_size))
+ lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
)
)
{
@@ -790,6 +843,41 @@ namespace boost
return false;
}
+ template <class CharT, class T>
+ bool put_inf_nan_impl(CharT* begin, CharT*& end, const T& value
+ , const CharT* lc_nan
+ , const CharT* lc_infinity)
+ {
+ using namespace std;
+ const CharT minus = lcast_char_constants<CharT>::minus;
+ if ( (boost::math::isnan)(value) )
+ {
+ if ( (boost::math::signbit)(value) )
+ {
+ *begin = minus;
+ ++ begin;
+ }
+
+ memcpy(begin, lc_nan, 3 * sizeof(CharT));
+ end = begin + 3;
+ return true;
+ } else if ( (boost::math::isinf)(value) )
+ {
+ if ( (boost::math::signbit)(value) )
+ {
+ *begin = minus;
+ ++ begin;
+ }
+
+ memcpy(begin, lc_infinity, 3 * sizeof(CharT));
+ end = begin + 3;
+ return true;
+ }
+
+ return false;
+ }
+
+
#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value)
@@ -799,8 +887,15 @@ namespace boost
, L"INFINITY", L"infinity"
, L'(', L')');
}
+
+ template <class T>
+ bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value)
+ {
+ return put_inf_nan_impl(begin, end, value, L"nan", L"infinity");
+ }
+
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
template <class T>
bool parse_inf_nan(const char16_t* begin, const char16_t* end, T& value)
{
@@ -809,8 +904,14 @@ namespace boost
, u"INFINITY", u"infinity"
, u'(', u')');
}
+
+ template <class T>
+ bool put_inf_nan(char16_t* begin, char16_t*& end, const T& value)
+ {
+ return put_inf_nan_impl(begin, end, value, u"nan", u"infinity");
+ }
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
template <class T>
bool parse_inf_nan(const char32_t* begin, const char32_t* end, T& value)
{
@@ -819,6 +920,12 @@ namespace boost
, U"INFINITY", U"infinity"
, U'(', U')');
}
+
+ template <class T>
+ bool put_inf_nan(char32_t* begin, char32_t*& end, const T& value)
+ {
+ return put_inf_nan_impl(begin, end, value, U"nan", U"infinity");
+ }
#endif
template <class CharT, class T>
@@ -829,73 +936,12 @@ namespace boost
, "INFINITY", "infinity"
, '(', ')');
}
-#ifndef BOOST_LCAST_NO_WCHAR_T
- template <class T>
- bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value)
- {
- using namespace std;
- if ( (boost::math::isnan)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,L"-nan", sizeof(L"-nan"));
- end = begin + 4;
- } else
- {
- memcpy(begin,L"nan", sizeof(L"nan"));
- end = begin + 3;
- }
- return true;
- } else if ( (boost::math::isinf)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,L"-inf", sizeof(L"-inf"));
- end = begin + 4;
- } else
- {
- memcpy(begin,L"inf", sizeof(L"inf"));
- end = begin + 3;
- }
- return true;
- }
- return false;
- }
-#endif
template <class CharT, class T>
bool put_inf_nan(CharT* begin, CharT*& end, const T& value)
{
- using namespace std;
- if ( (boost::math::isnan)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,"-nan", sizeof("-nan"));
- end = begin + 4;
- } else
- {
- memcpy(begin,"nan", sizeof("nan"));
- end = begin + 3;
- }
- return true;
- } else if ( (boost::math::isinf)(value) )
- {
- if ( (boost::math::signbit)(value) )
- {
- memcpy(begin,"-inf", sizeof("-inf"));
- end = begin + 4;
- } else
- {
- memcpy(begin,"inf", sizeof("inf"));
- end = begin + 3;
- }
- return true;
- }
-
- return false;
+ return put_inf_nan_impl(begin, end, value, "nan", "infinity");
}
-
}
@@ -951,7 +997,7 @@ namespace boost
CharT const capital_e = lcast_char_constants<CharT>::capital_e;
CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
- value = 0.0;
+ value = static_cast<T>(0);
if (parse_inf_nan(begin, end, value)) return true;
@@ -1042,9 +1088,10 @@ namespace boost
) return false;
#endif
- if(*begin == decimal_point){
+ if(*begin == decimal_point) {
++ begin;
found_decimal = true;
+ if (!found_number_before_exp && begin==end) return false;
continue;
}else {
if (!found_number_before_exp) return false;
@@ -1165,7 +1212,7 @@ namespace boost
namespace detail
{
- struct do_not_construct_stringbuffer_t{};
+ struct do_not_construct_out_stream_t{};
}
namespace detail // optimized stream wrapper
@@ -1177,25 +1224,27 @@ namespace boost
>
class lexical_stream_limited_src
{
- typedef stl_buf_unlocker<std::basic_streambuf<CharT, Traits>, CharT > local_streambuffer_t;
#if defined(BOOST_NO_STRINGSTREAM)
- typedef stl_buf_unlocker<std::strstream, CharT > local_stringbuffer_t;
+ typedef std::ostrstream out_stream_t;
+ typedef stl_buf_unlocker<std::strstreambuf, char> unlocked_but_t;
#elif defined(BOOST_NO_STD_LOCALE)
- typedef stl_buf_unlocker<std::stringstream, CharT > local_stringbuffer_t;
+ typedef std::ostringstream out_stream_t;
+ typedef stl_buf_unlocker<std::stringbuf, char> unlocked_but_t;
#else
- typedef stl_buf_unlocker<std::basic_stringbuf<CharT, Traits>, CharT > local_stringbuffer_t;
+ typedef std::basic_ostringstream<CharT, Traits> out_stream_t;
+ typedef stl_buf_unlocker<std::basic_stringbuf<CharT, Traits>, CharT> unlocked_but_t;
#endif
typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
RequiresStringbuffer,
- local_stringbuffer_t,
- do_not_construct_stringbuffer_t
- >::type deduced_stringbuffer_t;
+ out_stream_t,
+ do_not_construct_out_stream_t
+ >::type deduced_out_stream_t;
// A string representation of Source is written to [start, finish).
CharT* start;
CharT* finish;
- deduced_stringbuffer_t stringbuffer;
+ deduced_out_stream_t out_stream;
public:
lexical_stream_limited_src(CharT* sta, CharT* fin)
@@ -1221,7 +1270,7 @@ namespace boost
bool shl_char(T ch)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)) ,
- "boost::lexical_cast does not support conversions from whar_t to char types."
+ "boost::lexical_cast does not support conversions from wide character to char types."
"Use boost::locale instead" );
#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
std::locale loc;
@@ -1242,24 +1291,35 @@ namespace boost
return true;
}
-#ifndef BOOST_LCAST_NO_WCHAR_T
template <class T>
bool shl_char_array(T const* str)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)),
- "boost::lexical_cast does not support conversions from wchar_t to char types."
+ "boost::lexical_cast does not support conversions from wide characters to char types."
"Use boost::locale instead" );
return shl_input_streamable(str);
}
-#endif
+
+ bool shl_char_array_limited(CharT const* str, std::size_t max_size)
+ {
+ start = const_cast<CharT*>(str);
+ finish = std::find(start, start + max_size, static_cast<CharT>(0));
+ return true;
+ }
template<typename InputStreamable>
bool shl_input_streamable(InputStreamable& input)
{
- std::basic_ostream<CharT> stream(&stringbuffer);
- bool const result = !(stream << input).fail();
- start = stringbuffer.pbase();
- finish = stringbuffer.pptr();
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
+ // If you have compilation error at this point, than your STL library
+ // does not support such conversions. Try updating it.
+ BOOST_STATIC_ASSERT((boost::is_same<char, CharT>::value));
+#endif
+ bool const result = !(out_stream << input).fail();
+ const unlocked_but_t* const p
+ = static_cast<unlocked_but_t*>(out_stream.rdbuf()) ;
+ start = p->pbase();
+ finish = p->pptr();
return result;
}
@@ -1276,90 +1336,86 @@ namespace boost
return true;
}
-#if (defined _MSC_VER)
-# pragma warning( push )
-// C4996: This function or variable may be unsafe. Consider using sprintf_s instead
-# pragma warning( disable : 4996 )
-#endif
+ template <class T, class SomeCharT>
+ bool shl_real_type(const T& val, SomeCharT* begin, SomeCharT*& end)
+ {
+ if (put_inf_nan(begin, end, val)) return true;
+ lcast_set_precision(out_stream, &val);
+ return shl_input_streamable(val);
+ }
- template <class T>
- bool shl_float(float val,T* out)
+ static bool shl_real_type(float val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*g", static_cast<int>(boost::detail::lcast_get_precision<float >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ const double val_as_double = val;
+ end = begin +
+#if (defined _MSC_VER)
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
+#endif
+ "%.*g", static_cast<int>(boost::detail::lcast_get_precision<float>()), val_as_double);
+ return end > begin;
}
- template <class T>
- bool shl_double(double val,T* out)
+ static bool shl_real_type(double val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*lg", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin +
+#if (defined _MSC_VER)
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
+#endif
+ "%.*g", static_cast<int>(boost::detail::lcast_get_precision<double>()), val);
+ return end > begin;
}
+
#ifndef __MINGW32__
- template <class T>
- bool shl_long_double(long double val,T* out)
+ static bool shl_real_type(long double val, char* begin, char*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + sprintf(out,"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
- return finish > start;
- }
-#endif
-
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin +
#if (defined _MSC_VER)
-# pragma warning( pop )
+ sprintf_s(begin, end-begin,
+#else
+ sprintf(begin,
+#endif
+ "%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double>()), val );
+ return end > begin;
+ }
#endif
-#ifndef BOOST_LCAST_NO_WCHAR_T
- bool shl_float(float val,wchar_t* out)
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+ static bool shl_real_type(float val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + swprintf(out,
-#if !defined(__MINGW32__) && !defined(UNDER_CE)
- finish-start,
-#endif
- L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<float >()), val );
-
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ const double val_as_double = val;
+ end = begin + swprintf(begin, end-begin,
+ L"%.*g",
+ static_cast<int>(boost::detail::lcast_get_precision<float >()),
+ val_as_double );
+ return end > begin;
}
-
- bool shl_double(double val,wchar_t* out)
+ static bool shl_real_type(double val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- /* __MINGW32__ is defined for both mingw.org and for mingw-w64.
- * For mingw-w64, __MINGW64__ is defined, too, when targetting
- * 64 bits.
- *
- * swprintf realization in MinGW and under WinCE does not conform
- * to the ISO C
- * Standard.
- */
- finish = start + swprintf(out,
-#if !defined(__MINGW32__) && !defined(UNDER_CE)
- finish-start,
-#endif
- L"%.*lg", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
- return finish > start;
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin + swprintf(begin, end-begin,
+ L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
+ return end > begin;
}
-#ifndef __MINGW32__
- bool shl_long_double(long double val,wchar_t* out)
+ static bool shl_real_type(long double val, wchar_t* begin, wchar_t*& end)
{ using namespace std;
- if (put_inf_nan(start,finish,val)) return true;
- finish = start + swprintf(out,
-#if !defined(UNDER_CE)
- finish-start,
-#endif
+ if (put_inf_nan(begin, end, val)) return true;
+ end = begin + swprintf(begin, end-begin,
L"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
- return finish > start;
+ return end > begin;
}
#endif
-#endif
-
/************************************ OPERATORS << ( ... ) ********************************/
public:
template<class Alloc>
@@ -1370,7 +1426,6 @@ namespace boost
return true;
}
-#if !defined(__SUNPRO_CC)
template<class Alloc>
bool operator<<(::boost::container::basic_string<CharT,Traits,Alloc> const& str)
{
@@ -1378,7 +1433,7 @@ namespace boost
finish = start + str.length();
return true;
}
-#endif // !defined(__SUNPRO_CC)
+
bool operator<<(bool value)
{
CharT const czero = lcast_char_constants<CharT>::zero;
@@ -1387,6 +1442,52 @@ namespace boost
return true;
}
+ bool operator<<(const iterator_range<CharT*>& rng)
+ {
+ start = rng.begin();
+ finish = rng.end();
+ return true;
+ }
+
+ bool operator<<(const iterator_range<const CharT*>& rng)
+ {
+ start = const_cast<CharT*>(rng.begin());
+ finish = const_cast<CharT*>(rng.end());
+ return true;
+ }
+
+ bool operator<<(const iterator_range<const signed char*>& rng)
+ {
+ 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)
+ {
+ 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)
+ {
+ return (*this) << iterator_range<char*>(
+ reinterpret_cast<char*>(rng.begin()),
+ reinterpret_cast<char*>(rng.end())
+ );
+ }
+
+ bool operator<<(const iterator_range<unsigned char*>& rng)
+ {
+ return (*this) << iterator_range<char*>(
+ reinterpret_cast<char*>(rng.begin()),
+ reinterpret_cast<char*>(rng.end())
+ );
+ }
+
bool operator<<(char ch) { return shl_char(ch); }
bool operator<<(unsigned char ch) { return ((*this) << static_cast<char>(ch)); }
bool operator<<(signed char ch) { return ((*this) << static_cast<char>(ch)); }
@@ -1397,6 +1498,16 @@ namespace boost
bool operator<<(wchar_t ch) { return shl_char(ch); }
#endif
#endif
+#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_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)
+ bool operator<<(char32_t ch) { return shl_char(ch); }
+ bool operator<<(char32_t * str) { return shl_char_array(str); }
+ bool operator<<(char32_t const * str) { return shl_char_array(str); }
+#endif
bool operator<<(unsigned char const* ch) { return ((*this) << reinterpret_cast<char const*>(ch)); }
bool operator<<(unsigned char * ch) { return ((*this) << reinterpret_cast<char *>(ch)); }
bool operator<<(signed char const* ch) { return ((*this) << reinterpret_cast<char const*>(ch)); }
@@ -1417,17 +1528,67 @@ namespace boost
bool operator<<(unsigned __int64 n) { start = lcast_put_unsigned<Traits>(n, finish); return true; }
bool operator<<( __int64 n) { return shl_signed(n); }
#endif
- bool operator<<(float val) { return shl_float(val,start); }
- bool operator<<(double val) { return shl_double(val,start); }
+ bool operator<<(float val) { return shl_real_type(val, start, finish); }
+ bool operator<<(double val) { return shl_real_type(val, start, finish); }
bool operator<<(long double val) {
#ifndef __MINGW32__
- return shl_long_double(val,start);
+ return shl_real_type(val, start, finish);
#else
- return shl_double(val,start);
+ return shl_real_type(static_cast<double>(val), start, finish);
#endif
}
-
- template<class InStreamable>
+
+ template <std::size_t N>
+ bool operator<<(boost::array<CharT, N> const& input)
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<unsigned char, N> const& input)
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<signed char, N> const& input)
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<const CharT, N> const& input)
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(boost::array<const unsigned char, N> const& input)
+ { 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)
+ { 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)
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<unsigned char, N> const& input)
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<signed char, N> const& input)
+ { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<const CharT, N> const& input)
+ { return shl_char_array_limited(input.begin(), N); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<const unsigned char, N> const& input)
+ { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+
+ template <std::size_t N>
+ bool operator<<(std::array<const signed char, N> const& input)
+ { 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); }
/************************************ HELPER FUNCTIONS FOR OPERATORS >> ( ... ) ********************************/
@@ -1524,9 +1685,22 @@ namespace boost
if(is_pointer<InputStreamable>::value)
return false;
- local_streambuffer_t bb;
- bb.setg(start, start, finish);
- std::basic_istream<CharT> stream(&bb);
+#if defined(BOOST_NO_STRINGSTREAM) || 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));
+#endif
+
+#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);
+
stream.unsetf(std::ios::skipws);
lcast_set_precision(stream, static_cast<InputStreamable*>(0));
#if (defined _MSC_VER)
@@ -1549,7 +1723,7 @@ namespace boost
inline bool shr_xchar(T& output)
{
BOOST_STATIC_ASSERT_MSG(( sizeof(CharT) == sizeof(T) ),
- "boost::lexical_cast does not support conversions from whar_t to char types."
+ "boost::lexical_cast does not support conversions from wchar_t to char types."
"Use boost::locale instead" );
bool const ok = (finish - start == 1);
if(ok) {
@@ -1581,25 +1755,82 @@ namespace boost
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
bool operator>>(wchar_t& output) { return shr_xchar(output); }
#endif
-#ifndef BOOST_NO_CHAR16_T
+#if !defined(BOOST_NO_CHAR16_T) && !defined(BOOST_NO_UNICODE_LITERALS)
bool operator>>(char16_t& output) { return shr_xchar(output); }
#endif
-#ifndef BOOST_NO_CHAR32_T
+#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_UNICODE_LITERALS)
bool operator>>(char32_t& output) { return shr_xchar(output); }
#endif
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- bool operator>>(std::string& str) { str.assign(start, finish); return true; }
-# ifndef BOOST_LCAST_NO_WCHAR_T
- bool operator>>(std::wstring& str) { str.assign(start, finish); return true; }
-# endif
-#else
template<class Alloc>
bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
-#if !defined(__SUNPRO_CC)
+
template<class Alloc>
bool operator>>(::boost::container::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
-#endif // !defined(__SUNPRO_CC)
-#endif
+
+
+ private:
+ template <std::size_t N, class ArrayT>
+ bool shr_std_array(ArrayT& output, boost::mpl::bool_<true> /*is_T_char_tag*/)
+ {
+ 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) = static_cast<CharT>(0);
+ return true;
+ }
+
+ template <std::size_t N, class ArrayT>
+ bool shr_std_array(ArrayT& output, boost::mpl::bool_<false> /*is_T_char_tag*/)
+ {
+ return shr_using_base_class(output); // Array consist of non character types or unmatching character type
+ }
+ public:
+
+ template <std::size_t N>
+ bool operator>>(boost::array<CharT, N>& output)
+ {
+ typedef boost::mpl::bool_<true> tag_type;
+ return shr_std_array<N>(output, tag_type());
+ }
+
+ template <std::size_t N>
+ bool operator>>(boost::array<unsigned char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
+ }
+
+ template <std::size_t N>
+ bool operator>>(boost::array<signed char, N>& output)
+ {
+ return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output));
+ }
+
+#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+ template <std::size_t N>
+ bool operator>>(std::array<CharT, N>& output)
+ {
+ typedef boost::mpl::bool_<true> tag_type;
+ return shr_std_array<N>(output, tag_type());
+ }
+
+ 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));
+ }
+#endif // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY)
+
+
/*
* case "-0" || "0" || "+0" : output = false; return true;
* case "1" || "+1": output = true; return true;
@@ -1705,10 +1936,6 @@ namespace boost
};
}
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
- // call-by-const reference version
-
namespace detail
{
template<class T>
@@ -1734,49 +1961,12 @@ namespace boost
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#if !defined(__SUNPRO_CC)
+
template<typename CharT, typename Traits, typename Alloc>
struct is_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc> >
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#endif // !defined(__SUNPRO_CC)
- template<typename T>
- struct is_char_or_wchar
- {
- private:
-#ifndef BOOST_LCAST_NO_WCHAR_T
- typedef wchar_t wchar_t_if_supported;
-#else
- typedef char wchar_t_if_supported;
-#endif
-
-#ifndef BOOST_NO_CHAR16_T
- typedef char16_t char16_t_if_supported;
-#else
- typedef char char16_t_if_supported;
-#endif
-
-#ifndef BOOST_NO_CHAR32_T
- typedef char32_t char32_t_if_supported;
-#else
- typedef char char32_t_if_supported;
-#endif
- public:
-
- BOOST_STATIC_CONSTANT(bool, value =
- (
- ::boost::type_traits::ice_or<
- is_same< T, char >::value,
- is_same< T, wchar_t_if_supported >::value,
- is_same< T, char16_t_if_supported >::value,
- is_same< T, char32_t_if_supported >::value,
- is_same< T, unsigned char >::value,
- is_same< T, signed char >::value
- >::value
- )
- );
- };
template<typename Target, typename Source>
struct is_arithmetic_and_not_xchars
@@ -1784,8 +1974,8 @@ namespace boost
BOOST_STATIC_CONSTANT(bool, value =
(
::boost::type_traits::ice_and<
- is_arithmetic<Source>::value,
- is_arithmetic<Target>::value,
+ ::boost::is_arithmetic<Source>::value,
+ ::boost::is_arithmetic<Target>::value,
::boost::type_traits::ice_not<
detail::is_char_or_wchar<Target>::value
>::value,
@@ -1823,6 +2013,28 @@ namespace boost
);
};
+
+ // this metafunction evaluates to true, if we have optimized comnversion
+ // from Float type to Char array.
+ // Must be in sync with lexical_stream_limited_src<Char, ...>::shl_real_type(...)
+ template <typename Float, typename Char>
+ struct is_this_float_conversion_optimized
+ {
+ typedef ::boost::type_traits::ice_and<
+ ::boost::is_float<Float>::value,
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+ ::boost::type_traits::ice_or<
+ ::boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value,
+ ::boost::is_same<Char, wchar_t>::value
+ >::value
+#else
+ ::boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value
+#endif
+ > result_type;
+
+ BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+ };
+
template<typename Target, typename Source>
struct is_char_array_to_stdstring
{
@@ -1840,7 +2052,7 @@ namespace boost
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#if !defined(__SUNPRO_CC)
+
template<typename CharT, typename Traits, typename Alloc>
struct is_char_array_to_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
{
@@ -1852,7 +2064,6 @@ namespace boost
{
BOOST_STATIC_CONSTANT(bool, value = true );
};
-#endif // !defined(__SUNPRO_CC)
#if (defined _MSC_VER)
# pragma warning( push )
@@ -1866,59 +2077,64 @@ namespace boost
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<
- BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type
- , BOOST_DEDUCED_TYPENAME detail::stream_char<src>::type
+ target_char_t, src_char_type
>::type char_type;
- typedef detail::lcast_src_length<src> lcast_src_length;
- std::size_t const src_len = lcast_src_length::value;
- char_type buf[src_len + 1];
- lcast_src_length::check_coverage();
+#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
- deduce_char_traits<char_type,Target,Source>::type traits;
+ typedef BOOST_DEDUCED_TYPENAME ::boost::detail::deduce_char_traits<
+ char_type, Target, no_cv_src
+ >::type traits;
- typedef BOOST_DEDUCED_TYPENAME remove_pointer<src >::type removed_ptr_t;
+ 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;
- // is_char_types_match variable value can be computed via
- // sizeof(char_type) == sizeof(removed_ptr_t). But when
- // removed_ptr_t is an incomplete type or void*, compilers
- // produce warnings or errors.
- const bool is_char_types_match =
- (::boost::type_traits::ice_or<
- ::boost::type_traits::ice_and<
- ::boost::type_traits::ice_eq<sizeof(char_type), sizeof(char) >::value,
- ::boost::type_traits::ice_or<
- ::boost::is_same<char, removed_ptr_t>::value,
- ::boost::is_same<unsigned char, removed_ptr_t>::value,
- ::boost::is_same<signed char, removed_ptr_t>::value
- >::value
- >::value,
- is_same<char_type, removed_ptr_t>::value
- >::value);
-
- const bool requires_stringbuf =
- !(
- ::boost::type_traits::ice_or<
- is_stdstring<src >::value,
- is_arithmetic<src >::value,
- ::boost::type_traits::ice_and<
- is_pointer<src >::value,
- is_char_or_wchar<removed_ptr_t >::value,
- is_char_types_match
- >::value
- >::value
- );
-
- detail::lexical_stream_limited_src<char_type,traits, requires_stringbuf >
- interpreter(buf, buf + src_len);
+ 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);
+
// Disabling ADL, by directly specifying operators.
if(!(interpreter.operator <<(arg) && interpreter.operator >>(result)))
BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+
return result;
}
};
@@ -1926,7 +2142,7 @@ namespace boost
# pragma warning( pop )
#endif
- template<typename Source>
+ template <typename Source>
struct lexical_cast_copy
{
static inline Source lexical_cast_impl(const Source &arg)
@@ -1935,79 +2151,71 @@ namespace boost
}
};
- class precision_loss_error : public boost::numeric::bad_numeric_cast
+ template <class Source, class Target >
+ struct detect_precision_loss
{
- public:
- virtual const char * what() const throw()
- { return "bad numeric conversion: precision loss error"; }
- };
+ typedef boost::numeric::Trunc<Source> Rounder;
+ typedef Source source_type ;
- template<class S >
- struct throw_on_precision_loss
- {
- typedef boost::numeric::Trunc<S> Rounder;
- typedef S source_type ;
-
- typedef typename mpl::if_< is_arithmetic<S>,S,S const&>::type argument_type ;
+ typedef BOOST_DEDUCED_TYPENAME mpl::if_<
+ ::boost::is_arithmetic<Source>, Source, Source const&
+ >::type argument_type ;
static source_type nearbyint ( argument_type s )
{
- source_type orig_div_round = s / Rounder::nearbyint(s);
+ const source_type orig_div_round = s / Rounder::nearbyint(s);
+ const source_type eps = std::numeric_limits<source_type>::epsilon();
+
+ if ((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps)
+ BOOST_LCAST_THROW_BAD_CAST(Source, Target);
- if ( (orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > std::numeric_limits<source_type>::epsilon() )
- BOOST_THROW_EXCEPTION( precision_loss_error() );
return s ;
}
typedef typename Rounder::round_style round_style;
} ;
- template<typename Target, typename Source>
+ template <class Source, class Target >
+ struct nothrow_overflow_handler
+ {
+ void operator() ( boost::numeric::range_check_result r )
+ {
+ if (r != boost::numeric::cInRange)
+ BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+ }
+ } ;
+
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num_not_ignoring_minus
{
static inline Target lexical_cast_impl(const Source &arg)
{
- try{
- typedef boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- boost::numeric::def_overflow_handler,
- throw_on_precision_loss<Source>
- > Converter ;
-
- return Converter::convert(arg);
- } catch( ::boost::numeric::bad_numeric_cast const& ) {
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
- }
- BOOST_UNREACHABLE_RETURN(static_cast<Target>(0));
+ return boost::numeric::converter<
+ Target,
+ Source,
+ boost::numeric::conversion_traits<Target,Source>,
+ nothrow_overflow_handler<Source, Target>,
+ detect_precision_loss<Source, Target>
+ >::convert(arg);
}
};
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num_ignoring_minus
{
static inline Target lexical_cast_impl(const Source &arg)
{
- try{
- typedef boost::numeric::converter<
- Target,
- Source,
- boost::numeric::conversion_traits<Target,Source>,
- boost::numeric::def_overflow_handler,
- throw_on_precision_loss<Source>
- > Converter ;
-
- bool has_minus = ( arg < 0);
- if ( has_minus ) {
- return static_cast<Target>(-Converter::convert(-arg));
- } else {
- return Converter::convert(arg);
- }
- } catch( ::boost::numeric::bad_numeric_cast const& ) {
- BOOST_LCAST_THROW_BAD_CAST(Source, Target);
- }
- BOOST_UNREACHABLE_RETURN(static_cast<Target>(0));
+ typedef boost::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)
+ );
}
};
@@ -2029,7 +2237,7 @@ namespace boost
* optional, so if a negative number is read, no errors will arise
* and the result will be the two's complement.
*/
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
struct lexical_cast_dynamic_num
{
static inline Target lexical_cast_impl(const Source &arg)
@@ -2041,10 +2249,10 @@ namespace boost
::boost::is_float<Source>::value
>::value,
::boost::type_traits::ice_not<
- is_same<Source, bool>::value
+ ::boost::is_same<Source, bool>::value
>::value,
::boost::type_traits::ice_not<
- is_same<Target, bool>::value
+ ::boost::is_same<Target, bool>::value
>::value,
::boost::is_unsigned<Target>::value
>::value,
@@ -2057,40 +2265,80 @@ namespace boost
};
}
- template<typename Target, typename Source>
+ template <typename Target, typename Source>
inline Target lexical_cast(const Source &arg)
{
- typedef BOOST_DEDUCED_TYPENAME detail::array_to_pointer_decay<Source>::type src;
+ typedef BOOST_DEDUCED_TYPENAME ::boost::detail::array_to_pointer_decay<Source>::type src;
typedef BOOST_DEDUCED_TYPENAME ::boost::type_traits::ice_or<
- detail::is_xchar_to_xchar<Target, src>::value,
- detail::is_char_array_to_stdstring<Target,src>::value,
+ ::boost::detail::is_xchar_to_xchar<Target, src >::value,
+ ::boost::detail::is_char_array_to_stdstring<Target, src >::value,
::boost::type_traits::ice_and<
- is_same<Target, src>::value,
- detail::is_stdstring<Target>::value
+ ::boost::is_same<Target, src >::value,
+ ::boost::detail::is_stdstring<Target >::value
>::value
- > do_copy_type;
+ > shall_we_copy_t;
typedef BOOST_DEDUCED_TYPENAME
- detail::is_arithmetic_and_not_xchars<Target, src> do_copy_with_dynamic_check_type;
+ ::boost::detail::is_arithmetic_and_not_xchars<Target, src > shall_we_copy_with_dynamic_check_t;
typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
- do_copy_type::value,
- detail::lexical_cast_copy<src>,
+ shall_we_copy_t::value,
+ ::boost::detail::lexical_cast_copy<src >,
BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c<
- do_copy_with_dynamic_check_type::value,
- detail::lexical_cast_dynamic_num<Target, src>,
- detail::lexical_cast_do_cast<Target, src>
+ shall_we_copy_with_dynamic_check_t::value,
+ ::boost::detail::lexical_cast_dynamic_num<Target, src >,
+ ::boost::detail::lexical_cast_do_cast<Target, src >
>::type
>::type caster_type;
return caster_type::lexical_cast_impl(arg);
}
- #else
+} // namespace boost
+
+#else // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
- namespace detail // stream wrapper for handling lexical conversions
+namespace boost {
+ namespace detail
{
+
+ // selectors for choosing stream character type
+ template<typename Type>
+ struct stream_char
+ {
+ typedef char type;
+ };
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#ifndef BOOST_NO_INTRINSIC_WCHAR_T
+ template<>
+ struct stream_char<wchar_t>
+ {
+ typedef wchar_t type;
+ };
+#endif
+
+ template<>
+ struct stream_char<wchar_t *>
+ {
+ typedef wchar_t type;
+ };
+
+ template<>
+ struct stream_char<const wchar_t *>
+ {
+ typedef wchar_t type;
+ };
+
+ template<>
+ struct stream_char<std::wstring>
+ {
+ typedef wchar_t type;
+ };
+#endif
+
+ // stream wrapper for handling lexical conversions
template<typename Target, typename Source, typename Traits>
class lexical_stream
{
@@ -2180,8 +2428,9 @@ namespace boost
return result;
}
- #endif
-}
+} // namespace boost
+
+#endif
// Copyright Kevlin Henney, 2000-2005.
// Copyright Alexander Nasonov, 2006-2010.
@@ -2191,5 +2440,8 @@ namespace boost
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
+#undef BOOST_LCAST_THROW_BAD_CAST
#undef BOOST_LCAST_NO_WCHAR_T
-#endif
+
+#endif // BOOST_LEXICAL_CAST_INCLUDED
+