FCL/sftools/dev/build: comparison imgtools/imglib/boostlibrary/boost/lexical

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--1:000000000000
+:044383f39525
+#ifndef BOOST_LEXICAL_CAST_INCLUDED
+#define BOOST_LEXICAL_CAST_INCLUDED
+// Boost lexical_cast.hpp header  -------------------------------------------//
+//
+// See http://www.boost.org/libs/conversion for documentation.
+// See end of this header for rights and permissions.
+//
+// what:  lexical_cast custom keyword cast
+// who:   contributed by Kevlin Henney,
+//        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
+#include <climits>
+#include <cstddef>
+#include <istream>
+#include <string>
+#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/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>
+#endif
+#ifdef BOOST_NO_STRINGSTREAM
+#include <strstream>
+#else
+#include <sstream>
+#endif
+#if defined(BOOST_NO_STRINGSTREAM) || \
+defined(BOOST_NO_STD_WSTRING) || \
+defined(BOOST_NO_STD_LOCALE)
+#define BOOST_LCAST_NO_WCHAR_T
+#endif
+namespace boost
+{
+// exception used to indicate runtime lexical_cast failure
+class bad_lexical_cast : public std::bad_cast
+#if defined(__BORLANDC__) && BOOST_WORKAROUND( __BORLANDC__, < 0x560 )
+// under bcc32 5.5.1 bad_cast doesn't derive from exception
+, public std::exception
+#endif
+{
+public:
+bad_lexical_cast() :
+#ifndef BOOST_NO_TYPEID
+source(&typeid(void)), target(&typeid(void))
+#else
+source(0), target(0) // this breaks getters
+#endif
+{
+}
+bad_lexical_cast(
+const std::type_info &source_type_arg,
+const std::type_info &target_type_arg) :
+source(&source_type_arg), target(&target_type_arg)
+{
+}
+const std::type_info &source_type() const
+{
+return *source;
+}
+const std::type_info &target_type() const
+{
+return *target;
+}
+virtual const char *what() const throw()
+{
+return "bad lexical cast: "
+"source type value could not be interpreted as target";
+}
+virtual ~bad_lexical_cast() throw()
+{
+}
+private:
+const std::type_info *source;
+const std::type_info *target;
+};
+namespace detail // selectors for choosing stream character type
+{
+template<typename Type>
+struct stream_char
+{
+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> >
+{
+typedef CharT type;
+};
+#endif
+#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;
+};
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template<>
+struct stream_char<std::wstring>
+{
+typedef wchar_t type;
+};
+#endif
+#endif
+template<typename TargetChar, typename SourceChar>
+struct widest_char
+{
+typedef TargetChar type;
+};
+template<>
+struct widest_char<char, wchar_t>
+{
+typedef wchar_t type;
+};
+}
+namespace detail // deduce_char_traits template
+{
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template<class CharT, class Target, class Source>
+struct deduce_char_traits
+{
+typedef std::char_traits<CharT> type;
+};
+template<class CharT, class Traits, class Alloc, class Source>
+struct deduce_char_traits< CharT
+, std::basic_string<CharT,Traits,Alloc>
+, Source
+>
+{
+typedef Traits type;
+};
+template<class CharT, class Target, class Traits, class Alloc>
+struct deduce_char_traits< CharT
+, Target
+, std::basic_string<CharT,Traits,Alloc>
+>
+{
+typedef Traits type;
+};
+template<class CharT, class Traits, class Alloc1, class Alloc2>
+struct deduce_char_traits< CharT
+, std::basic_string<CharT,Traits,Alloc1>
+, std::basic_string<CharT,Traits,Alloc2>
+>
+{
+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*>
+{
+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() {}
+};
+#ifndef BOOST_LCAST_NO_WCHAR_T
+template<>
+struct lcast_src_length<wchar_t, wchar_t const*>
+{
+BOOST_STATIC_CONSTANT(std::size_t, value = 1);
+static void check_coverage() {}
+};
+template<>
+struct lcast_src_length<wchar_t, wchar_t*>
+{
+BOOST_STATIC_CONSTANT(std::size_t, value = 1);
+static void check_coverage() {}
+};
+#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> >
+{
+BOOST_STATIC_CONSTANT(std::size_t, value = 1);
+static void check_coverage() {}
+};
+#ifndef BOOST_LCAST_NO_WCHAR_T
+template<>
+struct lcast_src_length< wchar_t, std::basic_string<wchar_t> >
+{
+BOOST_STATIC_CONSTANT(std::size_t, value = 1);
+static void check_coverage() {}
+};
+#endif
+#endif
+// Helper for integral types.
+// Notes on length calculation:
+// Max length for 32bit int with grouping "\1" and thousands_sep ',':
+// "-2,1,4,7,4,8,3,6,4,7"
+//  ^                    - is_signed
+//   ^                   - 1 digit not counted by digits10
+//    ^^^^^^^^^^^^^^^^^^ - digits10 * 2
+//
+// Constant is_specialized is used instead of constant 1
+// to prevent buffer overflow in a rare case when
+// <boost/limits.hpp> doesn't add missing specialization for
+// numeric_limits<T> for some integral type T.
+// When is_specialized is false, the whole expression is 0.
+template<class Source>
+struct lcast_src_length_integral
+{
+#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>::digits10 * 2
+);
+#else
+BOOST_STATIC_CONSTANT(std::size_t, value = 156);
+BOOST_STATIC_ASSERT(sizeof(Source) * CHAR_BIT <= 256);
+#endif
+};
+#define BOOST_LCAST_DEF1(CharT, T)               \
+template<> struct lcast_src_length<CharT, 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)
+BOOST_LCAST_DEF(unsigned int)
+BOOST_LCAST_DEF(long)
+BOOST_LCAST_DEF(unsigned long)
+#if defined(BOOST_HAS_LONG_LONG)
+BOOST_LCAST_DEF(boost::ulong_long_type)
+BOOST_LCAST_DEF(boost::long_long_type )
+#elif defined(BOOST_HAS_MS_INT64)
+BOOST_LCAST_DEF(unsigned __int64)
+BOOST_LCAST_DEF(         __int64)
+#endif
+#undef BOOST_LCAST_DEF
+#undef BOOST_LCAST_DEF1
+#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+// Helper for floating point types.
+// -1.23456789e-123456
+// ^                   sign
+//  ^                  leading digit
+//   ^                 decimal point
+//    ^^^^^^^^         lcast_precision<Source>::value
+//            ^        "e"
+//             ^       exponent sign
+//              ^^^^^^ exponent (assumed 6 or less digits)
+// sign + leading digit + decimal point + "e" + exponent sign == 5
+template<class Source>
+struct lcast_src_length_floating
+{
+BOOST_STATIC_ASSERT(
+std::numeric_limits<Source>::max_exponent10 <=  999999L &&
+std::numeric_limits<Source>::min_exponent10 >= -999999L
+);
+BOOST_STATIC_CONSTANT(std::size_t, value =
+5 + lcast_precision<Source>::value + 6
+);
+};
+template<>
+struct lcast_src_length<char,float>
+: lcast_src_length_floating<float>
+{
+static void check_coverage() {}
+};
+template<>
+struct lcast_src_length<char,double>
+: lcast_src_length_floating<double>
+{
+static void check_coverage() {}
+};
+template<>
+struct lcast_src_length<char,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
+{
+template<typename CharT> struct lcast_char_constants;
+template<>
+struct lcast_char_constants<char>
+{
+BOOST_STATIC_CONSTANT(char, zero  = '0');
+BOOST_STATIC_CONSTANT(char, minus = '-');
+};
+#ifndef BOOST_LCAST_NO_WCHAR_T
+template<>
+struct lcast_char_constants<wchar_t>
+{
+BOOST_STATIC_CONSTANT(wchar_t, zero  = L'0');
+BOOST_STATIC_CONSTANT(wchar_t, minus = L'-');
+};
+#endif
+}
+namespace detail // lexical_streambuf_fake
+{
+struct lexical_streambuf_fake
+{
+};
+}
+namespace detail // lcast_to_unsigned
+{
+#if (defined _MSC_VER)
+# pragma warning( push )
+// C4146: unary minus operator applied to unsigned type, result still unsigned
+# pragma warning( disable : 4146 )
+#elif defined( __BORLANDC__ )
+# pragma option push -w-8041
+#endif
+template<class T>
+inline
+BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value)
+{
+typedef BOOST_DEDUCED_TYPENAME make_unsigned<T>::type result_type;
+result_type uvalue = static_cast<result_type>(value);
+return value < 0 ? -uvalue : uvalue;
+}
+#if (defined _MSC_VER)
+# pragma warning( pop )
+#elif defined( __BORLANDC__ )
+# pragma option pop
+#endif
+}
+namespace detail // lcast_put_unsigned
+{
+template<class Traits, class T, class CharT>
+CharT* lcast_put_unsigned(T n, CharT* finish)
+{
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+#endif
+#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:
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+BOOST_STATIC_ASSERT(std::numeric_limits<T>::digits10 < CHAR_MAX);
+#endif
+char left = last_grp_size;
+#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);
+do
+{
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+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;
+#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;
+}
+}
+namespace detail // stream wrapper for handling lexical conversions
+{
+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;
+typedef Traits traits_type;
+public:
+lexical_stream(char_type* = 0, char_type* = 0)
+{
+stream.unsetf(std::ios::skipws);
+lcast_set_precision(stream, (Source*)0, (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().
+EOF;
+#else
+traits_type::eof();
+#endif
+}
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+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
+bool operator>>(std::basic_string<char_type,traits_type>& output)
+{
+stream.str().swap(output);
+return true;
+}
+template<class Alloc>
+bool operator>>(std::basic_string<char_type,traits_type,Alloc>& out)
+{
+std::basic_string<char_type,traits_type> str(stream.str());
+out.assign(str.begin(), str.end());
+return true;
+}
+#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 // 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>
+>
+class lexical_stream_limited_src : public Base
+{
+// 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;
+private:
+static void widen_and_assign(char*p, char ch)
+{
+Traits::assign(*p, ch);
+}
+#ifndef BOOST_LCAST_NO_WCHAR_T
+static void widen_and_assign(wchar_t* p, char ch)
+{
+// TODO: use BOOST_NO_STD_LOCALE
+std::locale loc;
+wchar_t w = BOOST_USE_FACET(std::ctype<wchar_t>, loc).widen(ch);
+Traits::assign(*p, w);
+}
+static void widen_and_assign(wchar_t* p, wchar_t ch)
+{
+Traits::assign(*p, ch);
+}
+static void widen_and_assign(char*, wchar_t ch); // undefined
+#endif
+template<class OutputStreamable>
+bool lcast_put(const OutputStreamable& input)
+{
+this->setp(start, finish);
+std::basic_ostream<CharT> stream(static_cast<Base*>(this));
+lcast_set_precision(stream, (OutputStreamable*)0);
+bool const result = !(stream << input).fail();
+finish = this->pptr();
+return result;
+}
+// Undefined:
+lexical_stream_limited_src(lexical_stream_limited_src const&);
+void operator=(lexical_stream_limited_src const&);
+public:
+lexical_stream_limited_src(CharT* sta, CharT* fin)
+: start(sta)
+, finish(fin)
+{}
+public: // output
+template<class Alloc>
+bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str)
+{
+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);
+#if defined(BOOST_HAS_LONG_LONG)
+bool operator<<(boost::ulong_long_type);
+bool operator<<(boost::long_long_type );
+#elif defined(BOOST_HAS_MS_INT64)
+bool operator<<(unsigned __int64);
+bool operator<<(         __int64);
+#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);
+public: // input
+// Generic istream-based algorithm.
+// lcast_streambuf_for_target<InputStreamable>::value is true.
+template<typename InputStreamable>
+bool operator>>(InputStreamable& output)
+{
+#if (defined _MSC_VER)
+# pragma warning( push )
+// conditional expression is constant
+# pragma warning( disable : 4127 )
+#endif
+if(is_pointer<InputStreamable>::value)
+return false;
+this->setg(start, start, finish);
+std::basic_istream<CharT> stream(static_cast<Base*>(this));
+stream.unsetf(std::ios::skipws);
+lcast_set_precision(stream, (InputStreamable*)0);
+#if (defined _MSC_VER)
+# pragma warning( pop )
+#endif
+return stream >> output &&
+stream.get() ==
+#if defined(__GNUC__) && (__GNUC__<3) && defined(BOOST_NO_STD_WSTRING)
+// GCC 2.9x lacks std::char_traits<>::eof().
+// We use BOOST_NO_STD_WSTRING to filter out STLport and libstdc++-v3
+// configurations, which do provide std::char_traits<>::eof().
+EOF;
+#else
+Traits::eof();
+#endif
+}
+bool operator>>(CharT&);
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+// This #if is in sync with lcast_streambuf_for_target
+bool operator>>(std::string&);
+#ifndef BOOST_LCAST_NO_WCHAR_T
+bool operator>>(std::wstring&);
+#endif
+#else
+template<class Alloc>
+bool operator>>(std::basic_string<CharT,Traits,Alloc>& str)
+{
+str.assign(start, finish);
+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;
+}
+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;
+}
+#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<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);
+}
+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);
+}
+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);
+}
+return true;
+}
+#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)
+{
+--start;
+CharT const minus = lcast_char_constants<CharT>::minus;
+Traits::assign(*start, minus);
+}
+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;
+CharT const minus = lcast_char_constants<CharT>::minus;
+Traits::assign(*start, minus);
+}
+return true;
+}
+#endif
+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;
+}
+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;
+}
+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;
+}
+#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)
+{
+start = lcast_put_unsigned<Traits>(n, finish);
+return true;
+}
+#endif
+template<typename CharT, class Base, class Traits>
+inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
+float val)
+{
+return this->lcast_put(val);
+}
+template<typename CharT, class Base, class Traits>
+inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
+double val)
+{
+return this->lcast_put(val);
+}
+template<typename CharT, class Base, class Traits>
+inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
+long double val)
+{
+return this->lcast_put(val);
+}
+template<typename CharT, class Base, class Traits>
+inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
+CharT const* str)
+{
+start = const_cast<CharT*>(str);
+finish = start + Traits::length(str);
+return 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;
+}
+#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;
+}
+#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)
+{
+str.assign(start, finish);
+return true;
+}
+#endif
+#endif
+}
+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);
+};
+template<>
+struct lcast_streambuf_for_source<float>
+{
+BOOST_STATIC_CONSTANT(bool, value = true);
+};
+template<>
+struct lcast_streambuf_for_source<double>
+{
+BOOST_STATIC_CONSTANT(bool, value = true);
+};
+template<>
+struct lcast_streambuf_for_source<long double>
+{
+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
+{
+BOOST_STATIC_CONSTANT(bool, value = true);
+};
+template<>
+struct lcast_streambuf_for_target<char>
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+template<>
+struct lcast_streambuf_for_target<wchar_t>
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#endif
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template<class Traits, class Alloc>
+struct lcast_streambuf_for_target<
+std::basic_string<char,Traits,Alloc> >
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#ifndef BOOST_LCAST_NO_WCHAR_T
+template<class Traits, class Alloc>
+struct lcast_streambuf_for_target<
+std::basic_string<wchar_t,Traits,Alloc> >
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#endif
+#else
+template<>
+struct lcast_streambuf_for_target<std::string>
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#ifndef BOOST_LCAST_NO_WCHAR_T
+template<>
+struct lcast_streambuf_for_target<std::wstring>
+{
+BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#endif
+#endif
+}
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+// call-by-const reference version
+namespace detail
+{
+template<class T>
+struct array_to_pointer_decay
+{
+typedef T type;
+};
+template<class T, std::size_t N>
+struct array_to_pointer_decay<T[N]>
+{
+typedef const T * type;
+};
+template< typename 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)
+{
+typedef BOOST_DEDUCED_TYPENAME
+deduce_char_traits<CharT,Target,Source>::type traits;
+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;
+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);
+// The original form, reproduced below, is more elegant
+// but yields a spurious C4701 warning ("possible use of
+// "result" before initialization") with VC7.1 (/W4).
+//
+//            Target result;
+//
+//            if(!(interpreter << arg && interpreter >> result))
+//                throw_exception(bad_lexical_cast(typeid(Source), typeid(Target)));
+//            return result;
+if(interpreter << arg) {
+Target result;
+if (interpreter >> result)
+return result;
+}
+#ifndef BOOST_NO_TYPEID
+throw_exception(bad_lexical_cast(typeid(Source), typeid(Target)));
+#else
+throw_exception(bad_lexical_cast());
+#endif
+return Target(); // normally never reached (throw_exception)
+}
+}
+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);
+}
+#else
+// call-by-value fallback version (deprecated)
+template<typename Target, typename Source>
+Target lexical_cast(Source arg)
+{
+typedef typename detail::widest_char<
+BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type
+, BOOST_DEDUCED_TYPENAME detail::stream_char<Source>::type
+>::type char_type;
+typedef std::char_traits<char_type> traits;
+detail::lexical_stream<Target, Source, traits> interpreter;
+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
+return result;
+}
+#endif
+}
+// Copyright Kevlin Henney, 2000-2005.
+// Copyright Alexander Nasonov, 2006-2007.
+//
+// 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_NO_WCHAR_T
+#endif