diff options
Diffstat (limited to '3rdParty/Boost/src/boost/lexical_cast.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/lexical_cast.hpp | 2614 |
1 files changed, 1953 insertions, 661 deletions
diff --git a/3rdParty/Boost/src/boost/lexical_cast.hpp b/3rdParty/Boost/src/boost/lexical_cast.hpp index d7d9052..c475982 100644 --- a/3rdParty/Boost/src/boost/lexical_cast.hpp +++ b/3rdParty/Boost/src/boost/lexical_cast.hpp @@ -1,6 +1,12 @@ #ifndef BOOST_LEXICAL_CAST_INCLUDED #define BOOST_LEXICAL_CAST_INCLUDED +// MS compatible compilers support #pragma once + +#if defined(_MSC_VER) && (_MSC_VER >= 1020) +# pragma once +#endif + // Boost lexical_cast.hpp header -------------------------------------------// // // See http://www.boost.org/libs/conversion for documentation. @@ -11,28 +17,43 @@ // enhanced with contributions from Terje Slettebo, // with additional fixes and suggestions from Gennaro Prota, // Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov, -// Alexander Nasonov and other Boosters -// when: November 2000, March 2003, June 2005, June 2006 +// 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 + +#include <boost/config.hpp> +#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING) +#define BOOST_LCAST_NO_WCHAR_T +#endif #include <climits> #include <cstddef> -#include <istream> #include <string> +#include <cstring> +#include <cstdio> #include <typeinfo> #include <exception> -#include <boost/config.hpp> #include <boost/limits.hpp> #include <boost/mpl/if.hpp> #include <boost/throw_exception.hpp> +#include <boost/type_traits/ice.hpp> #include <boost/type_traits/is_pointer.hpp> -#include <boost/type_traits/make_unsigned.hpp> -#include <boost/call_traits.hpp> #include <boost/static_assert.hpp> #include <boost/detail/lcast_precision.hpp> #include <boost/detail/workaround.hpp> + #ifndef BOOST_NO_STD_LOCALE -#include <locale> +# include <locale> +#else +# ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE + // Getting error at this point means, that your STL library is old/lame/misconfigured. + // If nothing can be done with STL library, define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE, + // but beware: lexical_cast will understand only 'C' locale delimeters and thousands + // separators. +# error "Unable to use <locale> header. Define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE to force " +# error "boost::lexical_cast to use only 'C' locale during conversions." +# endif #endif #ifdef BOOST_NO_STRINGSTREAM @@ -41,10 +62,6 @@ #include <sstream> #endif -#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING) -#define BOOST_LCAST_NO_WCHAR_T -#endif - #ifdef BOOST_NO_TYPEID #define BOOST_LCAST_THROW_BAD_CAST(S, T) throw_exception(bad_lexical_cast()) #else @@ -55,7 +72,13 @@ namespace boost { // exception used to indicate runtime lexical_cast failure - class bad_lexical_cast : public std::bad_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 +#else + public std::bad_cast +#endif #if defined(__BORLANDC__) && BOOST_WORKAROUND( __BORLANDC__, < 0x560 ) // under bcc32 5.5.1 bad_cast doesn't derive from exception @@ -64,7 +87,7 @@ namespace boost { public: - bad_lexical_cast() : + bad_lexical_cast() BOOST_NOEXCEPT : #ifndef BOOST_NO_TYPEID source(&typeid(void)), target(&typeid(void)) #else @@ -75,7 +98,7 @@ namespace boost bad_lexical_cast( const std::type_info &source_type_arg, - const std::type_info &target_type_arg) : + const std::type_info &target_type_arg) BOOST_NOEXCEPT : source(&source_type_arg), target(&target_type_arg) { } @@ -89,81 +112,222 @@ namespace boost 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"; } + +#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; }; - namespace detail // selectors for choosing stream character type + namespace detail // widest_char { - template<typename 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 + +#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) && !defined(__PGIC__) + +#include <cmath> +#include <istream> + +#if !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY) +#include <array> +#endif + +#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 + +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 + { + // 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; + }; + + template <> + struct stream_char<unsigned char> + { typedef char type; }; -#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION - template<class CharT, class Traits, class Alloc> - struct stream_char< std::basic_string<CharT,Traits,Alloc> > + template <> + struct stream_char<signed 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; + }; + + 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; + }; + + template <class CharT, class Traits, class Alloc> + struct stream_char< std::basic_string<CharT, Traits, Alloc> > { typedef CharT type; }; -#endif -#ifndef BOOST_LCAST_NO_WCHAR_T -#ifndef BOOST_NO_INTRINSIC_WCHAR_T - template<> - struct stream_char<wchar_t> + template <class CharT, class Traits, class Alloc> + struct stream_char< ::boost::container::basic_string<CharT, Traits, Alloc> > { - typedef wchar_t type; + typedef CharT type; }; -#endif - template<> - struct stream_char<wchar_t *> + template<typename CharT, std::size_t N> + struct stream_char<boost::array<CharT, N> > { - typedef wchar_t type; + typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type; }; - template<> - struct stream_char<const wchar_t *> + template<typename CharT, std::size_t N> + struct stream_char<boost::array<const CharT, N> > { - typedef wchar_t type; + typedef BOOST_DEDUCED_TYPENAME stream_char<CharT>::type type; }; -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +#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 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) + +#if !defined(BOOST_LCAST_NO_WCHAR_T) && defined(BOOST_NO_INTRINSIC_WCHAR_T) template<> - struct stream_char<std::wstring> + struct stream_char<wchar_t> { - typedef wchar_t type; + typedef boost::detail::not_a_character_type type; }; -#endif -#endif - template<typename TargetChar, typename SourceChar> - struct widest_char + template<> + struct stream_char<wchar_t*> { - typedef TargetChar type; + typedef wchar_t type; }; template<> - struct widest_char<char, wchar_t> + 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 { @@ -188,140 +352,73 @@ namespace boost typedef Traits type; }; - template<class CharT, class Traits, class Alloc1, class Alloc2> + template<class CharT, class Traits, class Alloc, class Source> struct deduce_char_traits< CharT - , std::basic_string<CharT,Traits,Alloc1> - , std::basic_string<CharT,Traits,Alloc2> + , ::boost::container::basic_string<CharT,Traits,Alloc> + , Source > { typedef Traits type; }; -#endif - } - namespace detail // lcast_src_length - { - // Return max. length of string representation of Source; - // 0 if unlimited (with exceptions for some types, see below). - // Values with limited string representation are placed to - // the buffer locally defined in lexical_cast function. - // 1 is returned for few types such as CharT const* or - // std::basic_string<CharT> that already have an internal - // buffer ready to be reused by lexical_stream_limited_src. - // Each specialization should have a correspondent operator<< - // defined in lexical_stream_limited_src. - template< class CharT // A result of widest_char transformation. - , class Source // Source type of lexical_cast. - > - struct lcast_src_length - { - BOOST_STATIC_CONSTANT(std::size_t, value = 0); - // To check coverage, build the test with - // bjam --v2 profile optimization=off - static void check_coverage() {} - }; - - template<> - struct lcast_src_length<char, bool> - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; - - template<> - struct lcast_src_length<char, char> - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; - - // No specializations for: - // lcast_src_length<char, signed char> - // lcast_src_length<char, unsigned char> - // lcast_src_length<char, signed char*> - // lcast_src_length<char, unsigned char*> - // lcast_src_length<char, signed char const*> - // lcast_src_length<char, unsigned char const*> - -#ifndef BOOST_LCAST_NO_WCHAR_T - template<> - struct lcast_src_length<wchar_t, bool> - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; - - template<> - struct lcast_src_length<wchar_t, char> - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; - -#ifndef BOOST_NO_INTRINSIC_WCHAR_T - template<> - struct lcast_src_length<wchar_t, wchar_t> - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; -#endif -#endif - - template<> - struct lcast_src_length<char, char const*> + template<class CharT, class Target, class Traits, class Alloc> + struct deduce_char_traits< CharT + , Target + , ::boost::container::basic_string<CharT,Traits,Alloc> + > { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} + typedef Traits type; }; - template<> - struct lcast_src_length<char, char*> + 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> + > { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} + typedef Traits type; }; -#ifndef BOOST_LCAST_NO_WCHAR_T - template<> - struct lcast_src_length<wchar_t, wchar_t const*> + 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> + > { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} + typedef Traits type; }; - template<> - struct lcast_src_length<wchar_t, wchar_t*> + 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> + > { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} + typedef Traits type; }; -#endif -#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION - template<class CharT, class Traits, class Alloc> - struct lcast_src_length< CharT, std::basic_string<CharT,Traits,Alloc> > - { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} - }; -#else - template<> - struct lcast_src_length< char, std::basic_string<char> > + 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> + > { - BOOST_STATIC_CONSTANT(std::size_t, value = 1); - static void check_coverage() {} + typedef Traits type; }; + } -#ifndef BOOST_LCAST_NO_WCHAR_T - template<> - struct lcast_src_length< wchar_t, std::basic_string<wchar_t> > + namespace detail // lcast_src_length + { + // Return max. length of string representation of Source; + template< class Source // Source type of lexical_cast. + > + 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() {} }; -#endif -#endif // Helper for integral types. // Notes on length calculation: @@ -342,7 +439,7 @@ namespace boost #ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS BOOST_STATIC_CONSTANT(std::size_t, value = std::numeric_limits<Source>::is_signed + - std::numeric_limits<Source>::is_specialized + // == 1 + std::numeric_limits<Source>::is_specialized + /* == 1 */ std::numeric_limits<Source>::digits10 * 2 ); #else @@ -351,19 +448,11 @@ namespace boost #endif }; -#define BOOST_LCAST_DEF1(CharT, T) \ - template<> struct lcast_src_length<CharT, T> \ +#define BOOST_LCAST_DEF(T) \ + template<> struct lcast_src_length<T> \ : lcast_src_length_integral<T> \ { static void check_coverage() {} }; -#ifdef BOOST_LCAST_NO_WCHAR_T -#define BOOST_LCAST_DEF(T) BOOST_LCAST_DEF1(char, T) -#else -#define BOOST_LCAST_DEF(T) \ - BOOST_LCAST_DEF1(char, T) \ - BOOST_LCAST_DEF1(wchar_t, T) -#endif - BOOST_LCAST_DEF(short) BOOST_LCAST_DEF(unsigned short) BOOST_LCAST_DEF(int) @@ -379,7 +468,6 @@ namespace boost #endif #undef BOOST_LCAST_DEF -#undef BOOST_LCAST_DEF1 #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION // Helper for floating point types. @@ -405,53 +493,30 @@ namespace boost }; template<> - struct lcast_src_length<char,float> + struct lcast_src_length<float> : lcast_src_length_floating<float> { static void check_coverage() {} }; template<> - struct lcast_src_length<char,double> + struct lcast_src_length<double> : lcast_src_length_floating<double> { static void check_coverage() {} }; template<> - struct lcast_src_length<char,long double> + struct lcast_src_length<long double> : lcast_src_length_floating<long double> { static void check_coverage() {} }; -#ifndef BOOST_LCAST_NO_WCHAR_T - template<> - struct lcast_src_length<wchar_t,float> - : lcast_src_length_floating<float> - { - static void check_coverage() {} - }; - - template<> - struct lcast_src_length<wchar_t,double> - : lcast_src_length_floating<double> - { - static void check_coverage() {} - }; - - template<> - struct lcast_src_length<wchar_t,long double> - : lcast_src_length_floating<long double> - { - static void check_coverage() {} - }; - -#endif // #ifndef BOOST_LCAST_NO_WCHAR_T #endif // #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION } - namespace detail // '0' and '-' constants + namespace detail // '0', '+' and '-' constants { template<typename CharT> struct lcast_char_constants; @@ -460,6 +525,10 @@ namespace boost { 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 = '.'); }; #ifndef BOOST_LCAST_NO_WCHAR_T @@ -468,15 +537,38 @@ namespace boost { 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'.'); }; #endif - } - namespace detail // lexical_streambuf_fake - { - struct lexical_streambuf_fake - { +#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'.'); }; +#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'.'); + }; +#endif } namespace detail // lcast_to_unsigned @@ -490,10 +582,10 @@ namespace boost #endif template<class T> inline - BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value) + BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value) BOOST_NOEXCEPT { typedef BOOST_DEDUCED_TYPENAME make_unsigned<T>::type result_type; - result_type uvalue = static_cast<result_type>(value); + const result_type uvalue = static_cast<result_type>(value); return value < 0 ? -uvalue : uvalue; } #if (defined _MSC_VER) @@ -506,257 +598,1096 @@ namespace boost namespace detail // lcast_put_unsigned { template<class Traits, class T, class CharT> - CharT* lcast_put_unsigned(T n, CharT* finish) + 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); + BOOST_DEDUCED_TYPENAME boost::mpl::if_c< + (sizeof(int_type) > sizeof(T)) + , int_type + , T + >::type n = n_param; + #ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE - // TODO: use BOOST_NO_STD_LOCALE std::locale loc; - 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(); - CharT thousands_sep = grouping_size ? np.thousands_sep() : 0; - std::string::size_type group = 0; // current group number - char last_grp_size = grouping[0] <= 0 ? CHAR_MAX : grouping[0]; - // a) Since grouping is const, grouping[grouping.size()] returns 0. - // b) It's safe to assume here and below that CHAR_MAX - // is equivalent to unlimited grouping: + if (loc != std::locale::classic()) { + 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 ) + { + #ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS - BOOST_STATIC_ASSERT(std::numeric_limits<T>::digits10 < CHAR_MAX); + // 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; - 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); + } + + --left; + + --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; + } + } #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; + } + } + + 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) + { +#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); + --end; + value = 0; + + if (begin > end || *end < czero || *end >= czero + 10) + return false; + value = *end - czero; + --end; + T multiplier = 1; + bool multiplier_overflowed = false; - do - { #ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE - if(left == 0) + 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(); + std::string::size_type const grouping_size = grouping.size(); + + /* According to Programming languages - C++ + * we MUST check for correct grouping + */ + if (grouping_size && grouping[0] > 0) { - ++group; - if(group < grouping_size) + 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) { - char const grp_size = grouping[group]; - last_grp_size = grp_size <= 0 ? CHAR_MAX : grp_size; + 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; + } 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]; + } + } } - left = last_grp_size; - --finish; - Traits::assign(*finish, thousands_sep); + if (shall_we_return) return true; } - - --left; + } #endif - - --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; + { + 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; + + 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; + --end; + } + } + return true; } } - namespace detail // stream wrapper for handling lexical conversions + namespace detail { - template<typename Target, typename Source, typename Traits> - class lexical_stream - { - private: - typedef typename widest_char< - typename stream_char<Target>::type, - typename stream_char<Source>::type>::type char_type; + template <class CharT> + bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) BOOST_NOEXCEPT { + for( unsigned int i=0; i < len; ++i ) { + if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false; + } - typedef Traits traits_type; + return true; + } - public: - lexical_stream(char_type* = 0, char_type* = 0) + /* Returns true and sets the correct value if found NaN or Inf. */ + template <class CharT, class T> + inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value + , const CharT* lc_NAN, const CharT* lc_nan + , const CharT* lc_INFINITY, const CharT* lc_infinity + , const CharT opening_brace, const CharT closing_brace) BOOST_NOEXCEPT + { + using namespace std; + 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; + + bool has_minus = false; + /* Parsing +/- */ + if( *begin == minus) { - stream.unsetf(std::ios::skipws); - lcast_set_precision(stream, static_cast<Source*>(0), static_cast<Target*>(0) ); + ++ begin; + has_minus = true; } - ~lexical_stream() - { - #if defined(BOOST_NO_STRINGSTREAM) - stream.freeze(false); - #endif - } - bool operator<<(const Source &input) + else if( *begin == plus ) ++begin; + + if( end-begin < 3 ) return false; + if( lc_iequal(begin, lc_nan, lc_NAN, 3) ) { - return !(stream << input).fail(); - } - template<typename InputStreamable> - bool operator>>(InputStreamable &output) + begin += 3; + 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( !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) + ) + || + ( /* 'INFINITY' or 'infinity' */ + end-begin==inifinity_size + && + lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size) + ) + ) { - 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 + if( !has_minus ) value = std::numeric_limits<T>::infinity(); + else value = (boost::math::changesign) (std::numeric_limits<T>::infinity()); + return true; } -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION + return false; + } - bool operator>>(std::string &output) + template <class CharT, class T> + bool put_inf_nan_impl(CharT* begin, CharT*& end, const T& value + , const CharT* lc_nan + , const CharT* lc_infinity) BOOST_NOEXCEPT + { + using namespace std; + const CharT minus = lcast_char_constants<CharT>::minus; + if ( (boost::math::isnan)(value) ) { - #if defined(BOOST_NO_STRINGSTREAM) - stream << '\0'; - #endif - stream.str().swap(output); + if ( (boost::math::signbit)(value) ) + { + *begin = minus; + ++ begin; + } + + memcpy(begin, lc_nan, 3 * sizeof(CharT)); + end = begin + 3; return true; - } - #ifndef BOOST_LCAST_NO_WCHAR_T - bool operator>>(std::wstring &output) + } else if ( (boost::math::isinf)(value) ) { - stream.str().swap(output); + if ( (boost::math::signbit)(value) ) + { + *begin = minus; + ++ begin; + } + + memcpy(begin, lc_infinity, 3 * sizeof(CharT)); + end = begin + 3; return true; } - #endif + 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) BOOST_NOEXCEPT + { + return parse_inf_nan_impl(begin, end, value + , L"NAN", L"nan" + , L"INFINITY", L"infinity" + , L'(', L')'); + } + + template <class T> + bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value) BOOST_NOEXCEPT + { + return put_inf_nan_impl(begin, end, value, L"nan", L"infinity"); + } + +#endif +#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) BOOST_NOEXCEPT + { + return parse_inf_nan_impl(begin, end, value + , u"NAN", u"nan" + , u"INFINITY", u"infinity" + , u'(', u')'); + } + + template <class T> + bool put_inf_nan(char16_t* begin, char16_t*& end, const T& value) BOOST_NOEXCEPT + { + return put_inf_nan_impl(begin, end, value, u"nan", u"infinity"); + } +#endif +#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) BOOST_NOEXCEPT + { + return parse_inf_nan_impl(begin, end, value + , U"NAN", U"nan" + , U"INFINITY", U"infinity" + , U'(', U')'); + } + + template <class T> + bool put_inf_nan(char32_t* begin, char32_t*& end, const T& value) BOOST_NOEXCEPT + { + return put_inf_nan_impl(begin, end, value, U"nan", U"infinity"); + } +#endif + + template <class CharT, class T> + bool parse_inf_nan(const CharT* begin, const CharT* end, T& value) BOOST_NOEXCEPT + { + return parse_inf_nan_impl(begin, end, value + , "NAN", "nan" + , "INFINITY", "infinity" + , '(', ')'); + } + + template <class CharT, class T> + bool put_inf_nan(CharT* begin, CharT*& end, const T& value) BOOST_NOEXCEPT + { + return put_inf_nan_impl(begin, end, value, "nan", "infinity"); + } + } + + + namespace detail // lcast_ret_float + { + template <class T> + struct mantissa_holder_type + { + /* Can not be used with this type */ + }; + + template <> + struct mantissa_holder_type<float> + { + typedef unsigned int type; + }; + + template <> + struct mantissa_holder_type<double> + { +#if defined(BOOST_HAS_LONG_LONG) + typedef boost::ulong_long_type type; +#elif defined(BOOST_HAS_MS_INT64) + typedef unsigned __int64 type; +#endif + }; + + template<class Traits, class T, class CharT> + inline bool lcast_ret_float(T& value, const CharT* begin, const CharT* end) + { + +#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE + std::locale loc; + typedef std::numpunct<CharT> numpunct; + numpunct const& np = BOOST_USE_FACET(numpunct, loc); + std::string const grouping( + (loc == std::locale::classic()) + ? std::string() + : np.grouping() + ); + std::string::size_type const grouping_size = grouping.size(); + CharT const thousands_sep = 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; #else - bool operator>>(std::basic_string<char_type,traits_type>& output) - { - stream.str().swap(output); - return true; + 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; } - template<class Alloc> - bool operator>>(std::basic_string<char_type,traits_type,Alloc>& out) + bool found_decimal = false; + bool found_number_before_exp = false; + int pow_of_10 = 0; + mantissa_type mantissa=0; + bool is_mantissa_full = false; + + char length_since_last_delim = 0; + + while ( begin != end ) { - std::basic_string<char_type,traits_type> str(stream.str()); - out.assign(str.begin(), str.end()); - return true; + if (found_decimal) { + /* We allow no thousand_separators after decimal point */ + + mantissa_type tmp_mantissa = mantissa * 10u; + 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 + ) { + is_mantissa_full = true; + ++ begin; + continue; + } + + -- pow_of_10; + mantissa = tmp_mantissa; + mantissa += *begin - zero; + + found_number_before_exp = true; + } else { + + if (*begin >= czero && *begin < czero + 10) { + + /* 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 + ) + { + mantissa = tmp_mantissa; + mantissa += *begin - zero; + } else + { + is_mantissa_full = true; + ++ pow_of_10; + } + + found_number_before_exp = true; + ++ length_since_last_delim; + } else if (Traits::eq(*begin, decimal_point) || Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) { +#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE + /* If ( we need to check grouping + * and ( grouping missmatches + * or grouping position is incorrect + * or we are using the grouping position 0 twice + * ) + * ) then return error + */ + if( grouping_size && found_grouping + && ( + length_since_last_delim != grouping[0] + || last_grouping_pos>1 + || (last_grouping_pos==0 && grouping_size>1) + ) + ) return false; +#endif + + if(Traits::eq(*begin, decimal_point)) { + ++ begin; + found_decimal = true; + if (!found_number_before_exp && begin==end) return false; + continue; + }else { + if (!found_number_before_exp) return false; + break; + } + } +#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE + else if (grouping_size && Traits::eq(*begin, thousands_sep)){ + if(found_grouping) + { + /* It is not he first time, when we find thousands separator, + * so we need to chek, is the distance between two groupings + * equal to grouping[last_grouping_pos] */ + + if (length_since_last_delim != grouping[last_grouping_pos] ) + { + if (!last_grouping_pos) return false; + else + { + -- last_grouping_pos; + if (length_since_last_delim != grouping[last_grouping_pos]) return false; + } + } else + /* We are calling the grouping[0] twice, when grouping size is more than 1 */ + if (grouping_size>1u && last_grouping_pos+1<grouping_size) return false; + + } else { + /* Delimiter at the begining ',000' */ + if (!length_since_last_delim) return false; + + found_grouping = true; + if (length_since_last_delim > grouping[last_grouping_pos] ) return false; + } + + length_since_last_delim = 0; + ++ begin; + + /* Delimiter at the end '100,' */ + if (begin == end) return false; + continue; + } +#endif + else return false; + } + + ++begin; } + + // Exponent found + if ( begin != end && (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) ) { + ++ begin; + if ( begin == end ) return false; + + bool exp_has_minus = false; + if(Traits::eq(*begin, minus)) { + exp_has_minus = true; + ++ begin; + if ( begin == end ) return false; + } else if (Traits::eq(*begin, plus)) { + ++ begin; + 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*/ + return false; + + exp_pow_of_10 *= 10; + exp_pow_of_10 += *begin - zero; + ++ 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; + } + } + } + + /* 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; + value = static_cast<T>( has_minus ? (boost::math::changesign)(result) : result); + + if ( (boost::math::isinf)(value) || (boost::math::isnan)(value) ) return false; + + return true; + } + } + + namespace detail // stl_buf_unlocker + { + template< class BufferType, class CharT > + class stl_buf_unlocker: public BufferType{ + public: + typedef BufferType base_class; +#ifndef BOOST_NO_USING_TEMPLATE + using base_class::pptr; + using base_class::pbase; + using base_class::setg; + using base_class::setp; +#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); } #endif - private: - #if defined(BOOST_NO_STRINGSTREAM) - std::strstream stream; - #elif defined(BOOST_NO_STD_LOCALE) - std::stringstream stream; - #else - std::basic_stringstream<char_type,traits_type> stream; - #endif }; } + namespace detail + { + struct do_not_construct_out_stream_t{}; + } + namespace detail // optimized stream wrapper { // String representation of Source has an upper limit. template< class CharT // a result of widest_char transformation - , class Base // lexical_streambuf_fake or basic_streambuf<CharT> , class Traits // usually char_traits<CharT> + , bool RequiresStringbuffer > - class lexical_stream_limited_src : public Base + class lexical_stream_limited_src { + +#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< + 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). - // Currently, it is assumed that [start, finish) is big enough - // to hold a string representation of any Source value. CharT* start; CharT* finish; + deduced_out_stream_t out_stream; + + public: + lexical_stream_limited_src(CharT* sta, CharT* fin) + : start(sta) + , finish(fin) + {} private: + // Undefined: + lexical_stream_limited_src(lexical_stream_limited_src const&); + void operator=(lexical_stream_limited_src const&); - static void widen_and_assign(char*p, char ch) +/************************************ HELPER FUNCTIONS FOR OPERATORS << ( ... ) ********************************/ + bool shl_char(CharT ch) BOOST_NOEXCEPT { - Traits::assign(*p, ch); + Traits::assign(*start, ch); + finish = start + 1; + return true; } #ifndef BOOST_LCAST_NO_WCHAR_T - static void widen_and_assign(wchar_t* p, char ch) + template <class T> + bool shl_char(T ch) { - // TODO: use BOOST_NO_STD_LOCALE + BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)) , + "boost::lexical_cast does not support narrowing of char types." + "Use boost::locale instead" ); +#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE std::locale loc; - wchar_t w = BOOST_USE_FACET(std::ctype<wchar_t>, loc).widen(ch); - Traits::assign(*p, w); + CharT const w = BOOST_USE_FACET(std::ctype<CharT>, loc).widen(ch); +#else + CharT const w = ch; +#endif + Traits::assign(*start, w); + finish = start + 1; + return true; + } +#endif + + bool shl_char_array(CharT const* str) BOOST_NOEXCEPT + { + start = const_cast<CharT*>(str); + finish = start + Traits::length(str); + return true; } - static void widen_and_assign(wchar_t* p, wchar_t ch) + template <class T> + bool shl_char_array(T const* str) { - Traits::assign(*p, ch); + 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); + finish = std::find(start, start + max_size, Traits::to_char_type(0)); + return true; } - static void widen_and_assign(char*, wchar_t ch); // undefined + template<typename InputStreamable> + 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 + 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; + } - template<class OutputStreamable> - bool lcast_put(const OutputStreamable& input) + template <class T> + inline bool shl_signed(T n) { - this->setp(start, finish); - std::basic_ostream<CharT> stream(static_cast<Base*>(this)); - lcast_set_precision(stream, static_cast<OutputStreamable*>(0)); - bool const result = !(stream << input).fail(); - finish = this->pptr(); - return result; + start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); + if(n < 0) + { + --start; + CharT const minus = lcast_char_constants<CharT>::minus; + Traits::assign(*start, minus); + } + return true; } - // Undefined: - lexical_stream_limited_src(lexical_stream_limited_src const&); - void operator=(lexical_stream_limited_src const&); + 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); + } - public: + static bool shl_real_type(float val, char* begin, char*& end) + { using namespace std; + if (put_inf_nan(begin, end, val)) return true; + const double val_as_double = val; + end = begin + +#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) + sprintf_s(begin, end-begin, +#else + sprintf(begin, +#endif + "%.*g", static_cast<int>(boost::detail::lcast_get_precision<float>()), val_as_double); + return end > begin; + } - lexical_stream_limited_src(CharT* sta, CharT* fin) - : start(sta) - , finish(fin) - {} + 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 + +#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) + sprintf_s(begin, end-begin, +#else + sprintf(begin, +#endif + "%.*g", static_cast<int>(boost::detail::lcast_get_precision<double>()), val); + return end > begin; + } + +#ifndef __MINGW32__ + 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 + +#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) + 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 - public: // output +#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; + 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; + } + + 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, + L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double >()), val ); + return end > begin; + } + + 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, + L"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val ); + return end > begin; + } +#endif + +/************************************ OPERATORS << ( ... ) ********************************/ + public: template<class Alloc> - bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) + bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT { start = const_cast<CharT*>(str.data()); finish = start + str.length(); return true; } - bool operator<<(bool); - bool operator<<(char); -#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T) - bool operator<<(wchar_t); -#endif - bool operator<<(CharT const*); - bool operator<<(short); - bool operator<<(int); - bool operator<<(long); - bool operator<<(unsigned short); - bool operator<<(unsigned int); - bool operator<<(unsigned long); + template<class Alloc> + bool operator<<(::boost::container::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT + { + start = const_cast<CharT*>(str.data()); + finish = start + str.length(); + return true; + } + + bool operator<<(bool value) BOOST_NOEXCEPT + { + CharT const czero = lcast_char_constants<CharT>::zero; + Traits::assign(*start, 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; + } + + bool operator<<(const iterator_range<const CharT*>& rng) BOOST_NOEXCEPT + { + start = const_cast<CharT*>(rng.begin()); + finish = const_cast<CharT*>(rng.end()); + return true; + } + + bool operator<<(const iterator_range<const signed char*>& rng) BOOST_NOEXCEPT + { + return (*this) << iterator_range<char*>( + const_cast<char*>(reinterpret_cast<const char*>(rng.begin())), + const_cast<char*>(reinterpret_cast<const char*>(rng.end())) + ); + } + + bool operator<<(const iterator_range<const unsigned char*>& rng) BOOST_NOEXCEPT + { + return (*this) << iterator_range<char*>( + const_cast<char*>(reinterpret_cast<const char*>(rng.begin())), + const_cast<char*>(reinterpret_cast<const char*>(rng.end())) + ); + } + + bool operator<<(const iterator_range<signed char*>& rng) BOOST_NOEXCEPT + { + return (*this) << iterator_range<char*>( + reinterpret_cast<char*>(rng.begin()), + reinterpret_cast<char*>(rng.end()) + ); + } + + bool operator<<(const iterator_range<unsigned char*>& rng) BOOST_NOEXCEPT + { + return (*this) << iterator_range<char*>( + reinterpret_cast<char*>(rng.begin()), + reinterpret_cast<char*>(rng.end()) + ); + } + + bool operator<<(char ch) { return shl_char(ch); } + bool operator<<(unsigned char ch) { return ((*this) << static_cast<char>(ch)); } + bool operator<<(signed char ch) { return ((*this) << static_cast<char>(ch)); } +#if !defined(BOOST_LCAST_NO_WCHAR_T) + bool operator<<(wchar_t const* str) { return shl_char_array(str); } + bool operator<<(wchar_t * str) { return shl_char_array(str); } +#ifndef BOOST_NO_INTRINSIC_WCHAR_T + 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)); } + bool operator<<(signed char * ch) { return ((*this) << reinterpret_cast<char *>(ch)); } + bool operator<<(char const* str) { return shl_char_array(str); } + bool operator<<(char* str) { return shl_char_array(str); } + 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; } + #if defined(BOOST_HAS_LONG_LONG) - bool operator<<(boost::ulong_long_type); - bool operator<<(boost::long_long_type ); + bool operator<<(boost::ulong_long_type n) { start = lcast_put_unsigned<Traits>(n, finish); return true; } + bool operator<<(boost::long_long_type n) { return shl_signed(n); } #elif defined(BOOST_HAS_MS_INT64) - bool operator<<(unsigned __int64); - bool operator<<( __int64); + 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_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_real_type(val, start, finish); +#else + return shl_real_type(static_cast<double>(val), start, finish); #endif - // These three operators use ostream and streambuf. - // lcast_streambuf_for_source<T>::value is true. - bool operator<<(float); - bool operator<<(double); - bool operator<<(long double); + } + + template <std::size_t N> + bool operator<<(boost::array<CharT, N> const& input) BOOST_NOEXCEPT + { return shl_char_array_limited(input.begin(), N); } + + template <std::size_t N> + bool operator<<(boost::array<unsigned char, N> const& input) BOOST_NOEXCEPT + { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); } + + template <std::size_t N> + bool operator<<(boost::array<signed char, N> const& input) BOOST_NOEXCEPT + { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); } + + template <std::size_t N> + bool operator<<(boost::array<const CharT, N> const& input) BOOST_NOEXCEPT + { return shl_char_array_limited(input.begin(), N); } + + template <std::size_t N> + bool operator<<(boost::array<const unsigned char, N> const& input) BOOST_NOEXCEPT + { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); } + + template <std::size_t N> + bool operator<<(boost::array<const signed char, N> const& input) BOOST_NOEXCEPT + { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); } + +#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)); } + + 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 <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); } + +/************************************ HELPER FUNCTIONS FOR OPERATORS >> ( ... ) ********************************/ + private: - public: // input + template <typename Type> + 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; + + /* 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 ) ) + { + ++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 + return succeed; + } + + template <typename Type> + 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; + + /* 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) ) + { + ++start; + } + + bool succeed = lcast_ret_unsigned<Traits>(out_tmp, start, finish); + if (has_minus) { +#if (defined _MSC_VER) +# pragma warning( push ) +// C4146: unary minus operator applied to unsigned type, result still unsigned +# pragma warning( disable : 4146 ) +#elif defined( __BORLANDC__ ) +# pragma option push -w-8041 +#endif + utype const comp_val = static_cast<utype>(-(std::numeric_limits<Type>::min)()); + succeed = succeed && out_tmp<=comp_val; + output = -out_tmp; +#if (defined _MSC_VER) +# pragma warning( pop ) +#elif defined( __BORLANDC__ ) +# pragma option pop +#endif + } else { + utype const comp_val = static_cast<utype>((std::numeric_limits<Type>::max)()); + succeed = succeed && out_tmp<=comp_val; + output = out_tmp; + } + return succeed; + } - // Generic istream-based algorithm. - // lcast_streambuf_for_target<InputStreamable>::value is true. template<typename InputStreamable> - bool operator>>(InputStreamable& output) + bool shr_using_base_class(InputStreamable& output) { #if (defined _MSC_VER) # pragma warning( push ) @@ -766,8 +1697,22 @@ namespace boost if(is_pointer<InputStreamable>::value) return false; - this->setg(start, start, finish); - std::basic_istream<CharT> stream(static_cast<Base*>(this)); +#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) @@ -786,395 +1731,741 @@ namespace boost #endif } - bool operator>>(CharT&); - -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION -// This #if is in sync with lcast_streambuf_for_target - - bool operator>>(std::string&); + template<class T> + inline bool shr_xchar(T& output) + { + BOOST_STATIC_ASSERT_MSG(( sizeof(CharT) == sizeof(T) ), + "boost::lexical_cast does not support narrowing of character types." + "Use boost::locale instead" ); + bool const ok = (finish - start == 1); + if (ok) { + CharT out; + Traits::assign(out, *start); + output = static_cast<T>(out); + } + return ok; + } -#ifndef BOOST_LCAST_NO_WCHAR_T - bool operator>>(std::wstring&); +/************************************ OPERATORS >> ( ... ) ********************************/ + public: + bool operator>>(unsigned short& output) { return shr_unsigned(output); } + bool operator>>(unsigned int& output) { return shr_unsigned(output); } + bool operator>>(unsigned long int& output) { return shr_unsigned(output); } + bool operator>>(short& output) { return shr_signed(output); } + bool operator>>(int& output) { return shr_signed(output); } + bool operator>>(long int& output) { return shr_signed(output); } +#if defined(BOOST_HAS_LONG_LONG) + bool operator>>(boost::ulong_long_type& output) { return shr_unsigned(output); } + bool operator>>(boost::long_long_type& output) { return shr_signed(output); } +#elif defined(BOOST_HAS_MS_INT64) + bool operator>>(unsigned __int64& output) { return shr_unsigned(output); } + bool operator>>(__int64& 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) + bool operator>>(char16_t& output) { return shr_xchar(output); } #endif +#if !defined(BOOST_NO_CHAR32_T) && !defined(BOOST_NO_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; } -#else template<class Alloc> - bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) + 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 { - str.assign(start, finish); + 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; } -#endif - }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - bool value) - { - typedef typename Traits::int_type int_type; - CharT const czero = lcast_char_constants<CharT>::zero; - int_type const zero = Traits::to_int_type(czero); - Traits::assign(*start, Traits::to_char_type(zero + value)); - finish = start + 1; - return true; - } + public: - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - char ch) - { - widen_and_assign(start, ch); - finish = start + 1; - return true; - } + template <std::size_t N> + bool operator>>(boost::array<CharT, N>& output) BOOST_NOEXCEPT + { + return shr_std_array<N>(output); + } -#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T) - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - wchar_t ch) - { - widen_and_assign(start, ch); - finish = start + 1; - return true; - } -#endif + template <std::size_t N> + bool operator>>(boost::array<unsigned char, N>& output) + { + return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output)); + } - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - short n) - { - start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); - if(n < 0) - { - --start; - CharT const minus = lcast_char_constants<CharT>::minus; - Traits::assign(*start, minus); + 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) BOOST_NOEXCEPT + { + return shr_std_array<N>(output); } - return true; - } - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - int n) - { - start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); - if(n < 0) - { - --start; - CharT const minus = lcast_char_constants<CharT>::minus; - Traits::assign(*start, minus); + template <std::size_t N> + bool operator>>(std::array<unsigned char, N>& output) + { + return ((*this) >> reinterpret_cast<std::array<char, N>& >(output)); } - return true; - } - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - long n) - { - start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); - if(n < 0) - { - --start; - CharT const minus = lcast_char_constants<CharT>::minus; - Traits::assign(*start, minus); + template <std::size_t N> + bool operator>>(std::array<signed char, N>& in) + { + return ((*this) >> reinterpret_cast<std::array<char, N>& >(output)); } - return true; - } +#endif // !defined(BOOST_NO_CXX11_HDR_ARRAY) && defined(BOOST_HAS_TR1_ARRAY) -#if defined(BOOST_HAS_LONG_LONG) - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - boost::long_long_type n) - { - start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); - if(n < 0) + + /* + * case "-0" || "0" || "+0" : output = false; return true; + * case "1" || "+1": output = true; return true; + * default: return false; + */ + bool operator>>(bool& output) BOOST_NOEXCEPT { - --start; + CharT const zero = lcast_char_constants<CharT>::zero; + CharT const plus = lcast_char_constants<CharT>::plus; CharT const minus = lcast_char_constants<CharT>::minus; - Traits::assign(*start, 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; + } } - return true; - } -#elif defined(BOOST_HAS_MS_INT64) - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - __int64 n) - { - start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish); - if(n < 0) - { - --start; + + bool operator>>(float& output) { return lcast_ret_float<Traits>(output,start,finish); } + + private: + // Not optimised converter + 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); + + /* Some compilers and libraries successfully + * parse 'inf', 'INFINITY', '1.0E', '1.0E-'... + * We are trying to provide a unified behaviour, + * so we just forbid such conversions (as some + * of the most popular compilers/libraries do) + * */ CharT const minus = lcast_char_constants<CharT>::minus; - Traits::assign(*start, 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; + if ( return_value && + ( + Traits::eq(*(finish-1), lowercase_e) // 1.0e + || Traits::eq(*(finish-1), capital_e) // 1.0E + || Traits::eq(*(finish-1), minus) // 1.0e- or 1.0E- + || Traits::eq(*(finish-1), plus) // 1.0e+ or 1.0E+ + ) + ) return false; + + return return_value; } - return true; - } + + // Optimised converter + bool float_types_converter_internal(double& output,char /*tag*/) { + return lcast_ret_float<Traits>(output,start,finish); + } + public: + + 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, + * that current implementation of lcast_ret_float cannot be used for type + * 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, +#else + 0 #endif + int, + char + >::type tag = 0; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - unsigned short n) - { - start = lcast_put_unsigned<Traits>(n, finish); - return true; - } + return float_types_converter_internal(output, tag); + } - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - unsigned int n) - { - start = lcast_put_unsigned<Traits>(n, finish); - return true; - } + bool operator>>(long double& output) + { + int tag = 0; + return float_types_converter_internal(output, tag); + } - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - unsigned long n) - { - start = lcast_put_unsigned<Traits>(n, finish); - return true; - } + // 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); } + }; + } -#if defined(BOOST_HAS_LONG_LONG) - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - boost::ulong_long_type n) - { - start = lcast_put_unsigned<Traits>(n, finish); - return true; - } -#elif defined(BOOST_HAS_MS_INT64) - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - unsigned __int64 n) + namespace detail + { + template<class T> + struct array_to_pointer_decay { - start = lcast_put_unsigned<Traits>(n, finish); - return true; - } -#endif + typedef T type; + }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - float val) + template<class T, std::size_t N> + struct array_to_pointer_decay<T[N]> { - return this->lcast_put(val); - } + typedef const T * type; + }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - double val) + template<typename T> + struct is_stdstring { - return this->lcast_put(val); - } + BOOST_STATIC_CONSTANT(bool, value = false ); + }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - long double val) + template<typename CharT, typename Traits, typename Alloc> + struct is_stdstring< std::basic_string<CharT, Traits, Alloc> > { - return this->lcast_put(val); - } + BOOST_STATIC_CONSTANT(bool, value = true ); + }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<( - CharT const* str) + template<typename CharT, typename Traits, typename Alloc> + struct is_stdstring< ::boost::container::basic_string<CharT, Traits, Alloc> > { - start = const_cast<CharT*>(str); - finish = start + Traits::length(str); - return true; - } + BOOST_STATIC_CONSTANT(bool, value = true ); + }; - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>( - CharT& output) - { - bool const ok = (finish - start == 1); - if(ok) - Traits::assign(output, *start); - return ok; - } + 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 + ) + ); + }; -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>( - std::string& str) - { - str.assign(start, finish); - return true; - } + /* + * 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. + */ + 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 + ) + ); + }; -#ifndef BOOST_LCAST_NO_WCHAR_T - template<typename CharT, class Base, class Traits> - inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>( - std::wstring& str) + + // 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 { - str.assign(start, finish); - return true; - } -#endif + 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; - namespace detail // lcast_streambuf_for_source - { - // Returns true if optimized stream wrapper needs ostream for writing. - template<class Source> - struct lcast_streambuf_for_source - { - BOOST_STATIC_CONSTANT(bool, value = false); + BOOST_STATIC_CONSTANT(bool, value = (result_type::value) ); }; - template<> - struct lcast_streambuf_for_source<float> + template<typename Target, typename Source> + struct is_char_array_to_stdstring { - BOOST_STATIC_CONSTANT(bool, value = true); + BOOST_STATIC_CONSTANT(bool, value = false ); }; - - template<> - struct lcast_streambuf_for_source<double> + + 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_STATIC_CONSTANT(bool, value = true ); }; - - template<> - struct lcast_streambuf_for_source<long double> + + 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_STATIC_CONSTANT(bool, value = true ); }; - } - namespace detail // lcast_streambuf_for_target - { - // Returns true if optimized stream wrapper needs istream for reading. - template<class Target> - struct lcast_streambuf_for_target + 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); + BOOST_STATIC_CONSTANT(bool, value = true ); }; - template<> - struct lcast_streambuf_for_target<char> + 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 = false); + BOOST_STATIC_CONSTANT(bool, value = true ); }; -#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T) - template<> - struct lcast_streambuf_for_target<wchar_t> +#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 { - BOOST_STATIC_CONSTANT(bool, value = false); + 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); + + // Disabling ADL, by directly specifying operators. + if(!(interpreter.operator <<(arg) && interpreter.operator >>(result))) + BOOST_LCAST_THROW_BAD_CAST(Source, Target); + + return result; + } }; +#if (defined _MSC_VER) +# pragma warning( pop ) #endif -#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION - template<class Traits, class Alloc> - struct lcast_streambuf_for_target< - std::basic_string<char,Traits,Alloc> > + template <typename Source> + struct lexical_cast_copy { - BOOST_STATIC_CONSTANT(bool, value = false); + static inline const Source& lexical_cast_impl(const Source &arg) BOOST_NOEXCEPT + { + return arg; + } }; -#ifndef BOOST_LCAST_NO_WCHAR_T - template<class Traits, class Alloc> - struct lcast_streambuf_for_target< - std::basic_string<wchar_t,Traits,Alloc> > + template <class Source, class Target > + struct detect_precision_loss { - BOOST_STATIC_CONSTANT(bool, value = false); - }; -#endif -#else - template<> - struct lcast_streambuf_for_target<std::string> + typedef boost::numeric::Trunc<Source> Rounder; + typedef Source source_type ; + + typedef BOOST_DEDUCED_TYPENAME mpl::if_< + ::boost::is_arithmetic<Source>, Source, Source const& + >::type argument_type ; + + 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(); + + if ((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps) + BOOST_LCAST_THROW_BAD_CAST(Source, Target); + + return s ; + } + + typedef typename Rounder::round_style round_style; + } ; + + 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 { - BOOST_STATIC_CONSTANT(bool, value = false); + 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); + } }; -#ifndef BOOST_LCAST_NO_WCHAR_T - template<> - struct lcast_streambuf_for_target<std::wstring> + template <typename Target, typename Source> + struct lexical_cast_dynamic_num_ignoring_minus { - BOOST_STATIC_CONSTANT(bool, value = false); + 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) + ); + } }; + + /* + * lexical_cast_dynamic_num follows the rules: + * 1) If Source can be converted to Target without precision loss and + * without overflows, then assign Source to Target and return + * + * 2) If Source is less than 0 and Target is an unsigned integer, + * then negate Source, check the requirements of rule 1) and if + * successful, assign static_casted Source to Target and return + * + * 3) Otherwise throw a bad_lexical_cast exception + * + * + * Rule 2) required because boost::lexical_cast has the behavior of + * stringstream, which uses the rules of scanf for conversions. And + * in the C99 standard for unsigned input value minus sign is + * 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> + 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 + >::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 + >::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); + } + }; + } + + 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); + } + + template <typename Target> + inline Target lexical_cast(const char* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const char*>(chars, chars + count) + ); + } + + + template <typename Target> + inline Target lexical_cast(const unsigned char* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const unsigned char*>(chars, chars + count) + ); + } + + template <typename Target> + inline Target lexical_cast(const signed char* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const signed char*>(chars, chars + count) + ); + } + +#ifndef BOOST_LCAST_NO_WCHAR_T + template <typename Target> + inline Target lexical_cast(const wchar_t* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const wchar_t*>(chars, chars + count) + ); + } #endif +#ifndef BOOST_NO_CHAR16_T + template <typename Target> + inline Target lexical_cast(const char16_t* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const char16_t*>(chars, chars + count) + ); + } #endif +#ifndef BOOST_NO_CHAR32_T + template <typename Target> + inline Target lexical_cast(const char32_t* chars, std::size_t count) + { + return ::boost::lexical_cast<Target>( + ::boost::iterator_range<const char32_t*>(chars, chars + count) + ); } +#endif - #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +} // namespace boost - // call-by-const reference version +#else // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +namespace boost { namespace detail { - template<class T> - struct array_to_pointer_decay + + // selectors for choosing stream character type + template<typename Type> + struct stream_char { - typedef T type; + typedef char type; }; - template<class T, std::size_t N> - struct array_to_pointer_decay<T[N]> +#ifndef BOOST_LCAST_NO_WCHAR_T +#ifndef BOOST_NO_INTRINSIC_WCHAR_T + template<> + struct stream_char<wchar_t> { - typedef const T * type; + typedef wchar_t type; }; +#endif -#if (defined _MSC_VER) -# pragma warning( push ) -# pragma warning( disable : 4701 ) // possible use of ... before initialization -# pragma warning( disable : 4702 ) // unreachable code + 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 - template< typename Target - , typename Source - , bool Unlimited // string representation of Source is unlimited - , typename CharT - > - Target lexical_cast( - BOOST_DEDUCED_TYPENAME boost::call_traits<Source>::param_type arg, - CharT* buf, std::size_t src_len) + // stream wrapper for handling lexical conversions + template<typename Target, typename Source, typename Traits> + class lexical_stream { - typedef BOOST_DEDUCED_TYPENAME - deduce_char_traits<CharT,Target,Source>::type traits; + private: + typedef typename widest_char< + typename stream_char<Target>::type, + typename stream_char<Source>::type>::type char_type; - typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c< - lcast_streambuf_for_target<Target>::value || - lcast_streambuf_for_source<Source>::value - , std::basic_streambuf<CharT> - , lexical_streambuf_fake - >::type base; + typedef Traits traits_type; - BOOST_DEDUCED_TYPENAME boost::mpl::if_c< - Unlimited - , detail::lexical_stream<Target,Source,traits> - , detail::lexical_stream_limited_src<CharT,base,traits> - >::type interpreter(buf, buf + src_len); + public: + lexical_stream(char_type* = 0, char_type* = 0) + { + stream.unsetf(std::ios::skipws); + lcast_set_precision(stream, static_cast<Source*>(0), static_cast<Target*>(0) ); + } + ~lexical_stream() + { + #if defined(BOOST_NO_STRINGSTREAM) + stream.freeze(false); + #endif + } + bool operator<<(const Source &input) + { + return !(stream << input).fail(); + } + template<typename InputStreamable> + bool operator>>(InputStreamable &output) + { + 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(). - Target result; - if(!(interpreter << arg && interpreter >> result)) - BOOST_LCAST_THROW_BAD_CAST(Source, Target); - return result; - } -#if (defined _MSC_VER) -# pragma warning( pop ) + EOF; +#else + traits_type::eof(); #endif - } + } - template<typename Target, typename Source> - inline Target lexical_cast(const Source &arg) - { - typedef typename detail::array_to_pointer_decay<Source>::type src; - - typedef typename detail::widest_char< - typename detail::stream_char<Target>::type - , typename detail::stream_char<src>::type - >::type char_type; - - typedef detail::lcast_src_length<char_type, 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(); - return detail::lexical_cast<Target, src, !src_len>(arg, buf, src_len); - } + bool operator>>(std::string &output) + { + #if defined(BOOST_NO_STRINGSTREAM) + stream << '\0'; + #endif + stream.str().swap(output); + return true; + } + #ifndef BOOST_LCAST_NO_WCHAR_T + bool operator>>(std::wstring &output) + { + stream.str().swap(output); + return true; + } + #endif - #else + private: + #if defined(BOOST_NO_STRINGSTREAM) + std::strstream stream; + #elif defined(BOOST_NO_STD_LOCALE) + std::stringstream stream; + #else + std::basic_stringstream<char_type,traits_type> stream; + #endif + }; + } // call-by-value fallback version (deprecated) @@ -1191,23 +2482,24 @@ namespace boost Target result; if(!(interpreter << arg && interpreter >> result)) -#ifndef BOOST_NO_TYPEID - throw_exception(bad_lexical_cast(typeid(Source), typeid(Target))); -#else - throw_exception(bad_lexical_cast()); -#endif + BOOST_LCAST_THROW_BAD_CAST(Source, Target); return result; } - #endif -} +} // namespace boost + +#endif // Copyright Kevlin Henney, 2000-2005. -// Copyright Alexander Nasonov, 2006-2007. +// Copyright Alexander Nasonov, 2006-2010. +// Copyright Antony Polukhin, 2011-2012. // // Distributed under the Boost Software License, Version 1.0. (See // accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) +#undef BOOST_LCAST_THROW_BAD_CAST #undef BOOST_LCAST_NO_WCHAR_T -#endif + +#endif // BOOST_LEXICAL_CAST_INCLUDED + |