LCOM1920-T02G10

// -*- C++ -*-

//===-------------------------- locale ------------------------------------===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is dual licensed under the MIT and the University of Illinois Open

// Source Licenses. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_LOCALE

#define _LIBCPP_LOCALE

/*

    locale synopsis

namespace std

{

class locale

{

public:

    // types:

    class facet;

    class id;

    typedef int category;

    static const category // values assigned here are for exposition only

        none     = 0x000,

        collate  = 0x010,

        ctype    = 0x020,

        monetary = 0x040,

        numeric  = 0x080,

        time     = 0x100,

        messages = 0x200,

        all = collate | ctype | monetary | numeric | time | messages;

    // construct/copy/destroy:

    locale() noexcept;

    locale(const locale& other) noexcept;

    explicit locale(const char* std_name);

    explicit locale(const string& std_name);

    locale(const locale& other, const char* std_name, category);

    locale(const locale& other, const string& std_name, category);

    template <class Facet> locale(const locale& other, Facet* f);

    locale(const locale& other, const locale& one, category);

    ~locale(); // not virtual

    const locale& operator=(const locale& other) noexcept;

    template <class Facet> locale combine(const locale& other) const;

    // locale operations:

    basic_string<char> name() const;

    bool operator==(const locale& other) const;

    bool operator!=(const locale& other) const;

    template <class charT, class Traits, class Allocator>

      bool operator()(const basic_string<charT,Traits,Allocator>& s1,

                      const basic_string<charT,Traits,Allocator>& s2) const;

    // global locale objects:

    static locale global(const locale&);

    static const locale& classic();

};

template <class Facet> const Facet& use_facet(const locale&);

template <class Facet> bool has_facet(const locale&) noexcept;

// 22.3.3, convenience interfaces:

template <class charT> bool isspace (charT c, const locale& loc);

template <class charT> bool isprint (charT c, const locale& loc);

template <class charT> bool iscntrl (charT c, const locale& loc);

template <class charT> bool isupper (charT c, const locale& loc);

template <class charT> bool islower (charT c, const locale& loc);

template <class charT> bool isalpha (charT c, const locale& loc);

template <class charT> bool isdigit (charT c, const locale& loc);

template <class charT> bool ispunct (charT c, const locale& loc);

template <class charT> bool isxdigit(charT c, const locale& loc);

template <class charT> bool isalnum (charT c, const locale& loc);

template <class charT> bool isgraph (charT c, const locale& loc);

template <class charT> charT toupper(charT c, const locale& loc);

template <class charT> charT tolower(charT c, const locale& loc);

template<class Codecvt, class Elem = wchar_t,

         class Wide_alloc = allocator<Elem>,

         class Byte_alloc = allocator<char>>

class wstring_convert

{

public:

    typedef basic_string<char, char_traits<char>, Byte_alloc> byte_string;

    typedef basic_string<Elem, char_traits<Elem>, Wide_alloc> wide_string;

    typedef typename Codecvt::state_type                      state_type;

    typedef typename wide_string::traits_type::int_type       int_type;

    explicit wstring_convert(Codecvt* pcvt = new Codecvt);          // explicit in C++14

    wstring_convert(Codecvt* pcvt, state_type state);

    explicit wstring_convert(const byte_string& byte_err,           // explicit in C++14

                    const wide_string& wide_err = wide_string());

    wstring_convert(const wstring_convert&) = delete;               // C++14

    wstring_convert & operator=(const wstring_convert &) = delete;  // C++14

    ~wstring_convert();

    wide_string from_bytes(char byte);

    wide_string from_bytes(const char* ptr);

    wide_string from_bytes(const byte_string& str);

    wide_string from_bytes(const char* first, const char* last);

    byte_string to_bytes(Elem wchar);

    byte_string to_bytes(const Elem* wptr);

    byte_string to_bytes(const wide_string& wstr);

    byte_string to_bytes(const Elem* first, const Elem* last);

    size_t converted() const; // noexcept in C++14

    state_type state() const;

};

template <class Codecvt, class Elem = wchar_t, class Tr = char_traits<Elem>>

class wbuffer_convert

    : public basic_streambuf<Elem, Tr>

{

public:

    typedef typename Tr::state_type state_type;

    explicit wbuffer_convert(streambuf* bytebuf = 0, Codecvt* pcvt = new Codecvt,

                    state_type state = state_type());       // explicit in C++14

    wbuffer_convert(const wbuffer_convert&) = delete;               // C++14

    wbuffer_convert & operator=(const wbuffer_convert &) = delete;  // C++14

    ~wbuffer_convert();                                             // C++14

    streambuf* rdbuf() const;

    streambuf* rdbuf(streambuf* bytebuf);

    state_type state() const;

};

// 22.4.1 and 22.4.1.3, ctype:

class ctype_base;

template <class charT> class ctype;

template <> class ctype<char>; // specialization

template <class charT> class ctype_byname;

template <> class ctype_byname<char>; // specialization

class codecvt_base;

template <class internT, class externT, class stateT> class codecvt;

template <class internT, class externT, class stateT> class codecvt_byname;

// 22.4.2 and 22.4.3, numeric:

template <class charT, class InputIterator> class num_get;

template <class charT, class OutputIterator> class num_put;

template <class charT> class numpunct;

template <class charT> class numpunct_byname;

// 22.4.4, col lation:

template <class charT> class collate;

template <class charT> class collate_byname;

// 22.4.5, date and time:

class time_base;

template <class charT, class InputIterator> class time_get;

template <class charT, class InputIterator> class time_get_byname;

template <class charT, class OutputIterator> class time_put;

template <class charT, class OutputIterator> class time_put_byname;

// 22.4.6, money:

class money_base;

template <class charT, class InputIterator> class money_get;

template <class charT, class OutputIterator> class money_put;

template <class charT, bool Intl> class moneypunct;

template <class charT, bool Intl> class moneypunct_byname;

// 22.4.7, message retrieval:

class messages_base;

template <class charT> class messages;

template <class charT> class messages_byname;

}  // std

*/

#include <__config>

#include <__locale>

#include <algorithm>

#include <memory>

#include <ios>

#include <streambuf>

#include <iterator>

#include <limits>

#ifndef __APPLE__

#include <cstdarg>

#endif

#include <cstdlib>

#include <ctime>

#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)

#include <support/win32/locale_win32.h>

#elif defined(_NEWLIB_VERSION)

// FIXME: replace all the uses of _NEWLIB_VERSION with __NEWLIB__ preceded by an

// include of <sys/cdefs.h> once https://sourceware.org/ml/newlib-cvs/2014-q3/msg00038.html

// has had a chance to bake for a bit

#include <support/newlib/xlocale.h>

#endif

#ifdef _LIBCPP_HAS_CATOPEN

#include <nl_types.h>

#endif

#ifdef __APPLE__

#include <Availability.h>

#endif

#include <__undef_min_max>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

#pragma GCC system_header

#endif

_LIBCPP_BEGIN_NAMESPACE_STD

#if defined(__APPLE__) || defined(__FreeBSD__)

#  define _LIBCPP_GET_C_LOCALE 0

#elif defined(__CloudABI__) || defined(__NetBSD__) || defined(__minix)

#  define _LIBCPP_GET_C_LOCALE LC_C_LOCALE

#else

#  define _LIBCPP_GET_C_LOCALE __cloc()

   // Get the C locale object

   _LIBCPP_FUNC_VIS locale_t __cloc();

#define __cloc_defined

#endif

typedef _VSTD::remove_pointer<locale_t>::type __locale_struct;

typedef _VSTD::unique_ptr<__locale_struct, decltype(&freelocale)> __locale_unique_ptr;

#ifndef _LIBCPP_LOCALE__L_EXTENSIONS

typedef _VSTD::unique_ptr<__locale_struct, decltype(&uselocale)> __locale_raii;

#endif

// OSX has nice foo_l() functions that let you turn off use of the global

// locale.  Linux, not so much.  The following functions avoid the locale when

// that's possible and otherwise do the wrong thing.  FIXME.

#if defined(__linux__) || defined(__EMSCRIPTEN__) || defined(_AIX) || \

    defined(_NEWLIB_VERSION) || defined(__GLIBC__)

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

decltype(MB_CUR_MAX_L(_VSTD::declval<locale_t>()))

inline _LIBCPP_INLINE_VISIBILITY

__mb_cur_max_l(locale_t __l)

{

  return MB_CUR_MAX_L(__l);

}

#else  // _LIBCPP_LOCALE__L_EXTENSIONS

inline _LIBCPP_ALWAYS_INLINE

decltype(MB_CUR_MAX) __mb_cur_max_l(locale_t __l)

{

  __locale_raii __current(uselocale(__l), uselocale);

  return MB_CUR_MAX;

}

#endif // _LIBCPP_LOCALE__L_EXTENSIONS

inline _LIBCPP_ALWAYS_INLINE

wint_t __btowc_l(int __c, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return btowc_l(__c, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return btowc(__c);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

int __wctob_l(wint_t __c, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return wctob_l(__c, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return wctob(__c);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __wcsnrtombs_l(char *__dest, const wchar_t **__src, size_t __nwc,

                      size_t __len, mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return wcsnrtombs_l(__dest, __src, __nwc, __len, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return wcsnrtombs(__dest, __src, __nwc, __len, __ps);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __wcrtomb_l(char *__s, wchar_t __wc, mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return wcrtomb_l(__s, __wc, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return wcrtomb(__s, __wc, __ps);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __mbsnrtowcs_l(wchar_t * __dest, const char **__src, size_t __nms,

                      size_t __len, mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return mbsnrtowcs_l(__dest, __src, __nms, __len, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return mbsnrtowcs(__dest, __src, __nms, __len, __ps);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __mbrtowc_l(wchar_t *__pwc, const char *__s, size_t __n,

                   mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return mbrtowc_l(__pwc, __s, __n, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return mbrtowc(__pwc, __s, __n, __ps);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

int __mbtowc_l(wchar_t *__pwc, const char *__pmb, size_t __max, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return mbtowc_l(__pwc, __pmb, __max, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return mbtowc(__pwc, __pmb, __max);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __mbrlen_l(const char *__s, size_t __n, mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return mbrlen_l(__s, __n, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return mbrlen(__s, __n, __ps);

#endif

}

inline _LIBCPP_ALWAYS_INLINE

lconv *__localeconv_l(locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return localeconv_l(__l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return localeconv();

#endif

}

inline _LIBCPP_ALWAYS_INLINE

size_t __mbsrtowcs_l(wchar_t *__dest, const char **__src, size_t __len,

                     mbstate_t *__ps, locale_t __l)

{

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  return mbsrtowcs_l(__dest, __src, __len, __ps, __l);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  return mbsrtowcs(__dest, __src, __len, __ps);

#endif

}

inline

int __snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...) {

  va_list __va;

  va_start(__va, __format);

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  int __res = vsnprintf_l(__s, __n, __l, __format, __va);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  int __res = vsnprintf(__s, __n, __format, __va);

#endif

  va_end(__va);

  return __res;

}

inline

int __asprintf_l(char **__s, locale_t __l, const char *__format, ...) {

  va_list __va;

  va_start(__va, __format);

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  int __res = vasprintf_l(__s, __l, __format, __va);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  int __res = vasprintf(__s, __format, __va);

#endif

  va_end(__va);

  return __res;

}

inline

int __sscanf_l(const char *__s, locale_t __l, const char *__format, ...) {

  va_list __va;

  va_start(__va, __format);

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS

  int __res = vsscanf_l(__s, __l, __format, __va);

#else

  __locale_raii __current(uselocale(__l), uselocale);

  int __res = vsscanf(__s, __format, __va);

#endif

  va_end(__va);

  return __res;

}

#endif  // __linux__

// __scan_keyword

// Scans [__b, __e) until a match is found in the basic_strings range

//  [__kb, __ke) or until it can be shown that there is no match in [__kb, __ke).

//  __b will be incremented (visibly), consuming CharT until a match is found

//  or proved to not exist.  A keyword may be "", in which will match anything.

//  If one keyword is a prefix of another, and the next CharT in the input

//  might match another keyword, the algorithm will attempt to find the longest

//  matching keyword.  If the longer matching keyword ends up not matching, then

//  no keyword match is found.  If no keyword match is found, __ke is returned

//  and failbit is set in __err.

//  Else an iterator pointing to the matching keyword is found.  If more than

//  one keyword matches, an iterator to the first matching keyword is returned.

//  If on exit __b == __e, eofbit is set in __err.  If __case_sensitive is false,

//  __ct is used to force to lower case before comparing characters.

//  Examples:

//  Keywords:  "a", "abb"

//  If the input is "a", the first keyword matches and eofbit is set.

//  If the input is "abc", no match is found and "ab" are consumed.

template <class _InputIterator, class _ForwardIterator, class _Ctype>

_LIBCPP_HIDDEN

_ForwardIterator

__scan_keyword(_InputIterator& __b, _InputIterator __e,

               _ForwardIterator __kb, _ForwardIterator __ke,

               const _Ctype& __ct, ios_base::iostate& __err,

               bool __case_sensitive = true)

{

    typedef typename iterator_traits<_InputIterator>::value_type _CharT;

    size_t __nkw = static_cast<size_t>(_VSTD::distance(__kb, __ke));

    const unsigned char __doesnt_match = '\0';

    const unsigned char __might_match = '\1';

    const unsigned char __does_match = '\2';

    unsigned char __statbuf[100];

    unsigned char* __status = __statbuf;

    unique_ptr<unsigned char, void(*)(void*)> __stat_hold(0, free);

    if (__nkw > sizeof(__statbuf))

    {

        __status = (unsigned char*)malloc(__nkw);

        if (__status == 0)

            __throw_bad_alloc();

        __stat_hold.reset(__status);

    }

    size_t __n_might_match = __nkw;  // At this point, any keyword might match

    size_t __n_does_match = 0;       // but none of them definitely do

    // Initialize all statuses to __might_match, except for "" keywords are __does_match

    unsigned char* __st = __status;

    for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, (void) ++__st)

    {

        if (!__ky->empty())

            *__st = __might_match;

        else

        {

            *__st = __does_match;

            --__n_might_match;

            ++__n_does_match;

        }

    }

    // While there might be a match, test keywords against the next CharT

    for (size_t __indx = 0; __b != __e && __n_might_match > 0; ++__indx)

    {

        // Peek at the next CharT but don't consume it

        _CharT __c = *__b;

        if (!__case_sensitive)

            __c = __ct.toupper(__c);

        bool __consume = false;

        // For each keyword which might match, see if the __indx character is __c

        // If a match if found, consume __c

        // If a match is found, and that is the last character in the keyword,

        //    then that keyword matches.

        // If the keyword doesn't match this character, then change the keyword

        //    to doesn't match

        __st = __status;

        for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, (void) ++__st)

        {

            if (*__st == __might_match)

            {

                _CharT __kc = (*__ky)[__indx];

                if (!__case_sensitive)

                    __kc = __ct.toupper(__kc);

                if (__c == __kc)

                {

                    __consume = true;

                    if (__ky->size() == __indx+1)

                    {

                        *__st = __does_match;

                        --__n_might_match;

                        ++__n_does_match;

                    }

                }

                else

                {

                    *__st = __doesnt_match;

                    --__n_might_match;

                }

            }

        }

        // consume if we matched a character

        if (__consume)

        {

            ++__b;

            // If we consumed a character and there might be a matched keyword that

            //   was marked matched on a previous iteration, then such keywords

            //   which are now marked as not matching.

            if (__n_might_match + __n_does_match > 1)

            {

                __st = __status;

                for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, (void) ++__st)

                {

                    if (*__st == __does_match && __ky->size() != __indx+1)

                    {

                        *__st = __doesnt_match;

                        --__n_does_match;

                    }

                }

            }

        }

    }

    // We've exited the loop because we hit eof and/or we have no more "might matches".

    if (__b == __e)

        __err |= ios_base::eofbit;

    // Return the first matching result

    for (__st = __status; __kb != __ke; ++__kb, (void) ++__st)

        if (*__st == __does_match)

            break;

    if (__kb == __ke)

        __err |= ios_base::failbit;

    return __kb;

}

struct _LIBCPP_TYPE_VIS __num_get_base

{

    static const int __num_get_buf_sz = 40;

    static int __get_base(ios_base&);

    static const char __src[33];

};

_LIBCPP_FUNC_VIS

void __check_grouping(const string& __grouping, unsigned* __g, unsigned* __g_end,

                      ios_base::iostate& __err);

template <class _CharT>

struct __num_get

    : protected __num_get_base

{

    static string __stage2_int_prep(ios_base& __iob, _CharT* __atoms, _CharT& __thousands_sep);

    static string __stage2_float_prep(ios_base& __iob, _CharT* __atoms, _CharT& __decimal_point,

                                      _CharT& __thousands_sep);

    static int __stage2_int_loop(_CharT __ct, int __base, char* __a, char*& __a_end,

                  unsigned& __dc, _CharT __thousands_sep, const string& __grouping,

                  unsigned* __g, unsigned*& __g_end, _CharT* __atoms);

    static int __stage2_float_loop(_CharT __ct, bool& __in_units, char& __exp,

                                   char* __a, char*& __a_end,

                                   _CharT __decimal_point, _CharT __thousands_sep,

                                   const string& __grouping, unsigned* __g,

                                   unsigned*& __g_end, unsigned& __dc, _CharT* __atoms);

};

template <class _CharT>

string

__num_get<_CharT>::__stage2_int_prep(ios_base& __iob, _CharT* __atoms, _CharT& __thousands_sep)

{

    locale __loc = __iob.getloc();

    use_facet<ctype<_CharT> >(__loc).widen(__src, __src + 26, __atoms);

    const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);

    __thousands_sep = __np.thousands_sep();

    return __np.grouping();

}

template <class _CharT>

string

__num_get<_CharT>::__stage2_float_prep(ios_base& __iob, _CharT* __atoms, _CharT& __decimal_point,

                    _CharT& __thousands_sep)

{

    locale __loc = __iob.getloc();

    use_facet<ctype<_CharT> >(__loc).widen(__src, __src + 32, __atoms);

    const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);

    __decimal_point = __np.decimal_point();

    __thousands_sep = __np.thousands_sep();

    return __np.grouping();

}

template <class _CharT>

int

__num_get<_CharT>::__stage2_int_loop(_CharT __ct, int __base, char* __a, char*& __a_end,

                  unsigned& __dc, _CharT __thousands_sep, const string& __grouping,

                  unsigned* __g, unsigned*& __g_end, _CharT* __atoms)

{

    if (__a_end == __a && (__ct == __atoms[24] || __ct == __atoms[25]))

    {

        *__a_end++ = __ct == __atoms[24] ? '+' : '-';

        __dc = 0;

        return 0;

    }

    if (__grouping.size() != 0 && __ct == __thousands_sep)

    {

        if (__g_end-__g < __num_get_buf_sz)

        {

            *__g_end++ = __dc;

            __dc = 0;

        }

        return 0;

    }

    ptrdiff_t __f = find(__atoms, __atoms + 26, __ct) - __atoms;

    if (__f >= 24)

        return -1;

    switch (__base)

    {

    case 8:

    case 10:

        if (__f >= __base)

            return -1;

        break;

    case 16:

        if (__f < 22)

            break;

        if (__a_end != __a && __a_end - __a <= 2 && __a_end[-1] == '0')

        {

            __dc = 0;

            *__a_end++ = __src[__f];

            return 0;

        }

        return -1;

    }

    *__a_end++ = __src[__f];

    ++__dc;

    return 0;

}

template <class _CharT>

int

__num_get<_CharT>::__stage2_float_loop(_CharT __ct, bool& __in_units, char& __exp, char* __a, char*& __a_end,

                    _CharT __decimal_point, _CharT __thousands_sep, const string& __grouping,

                    unsigned* __g, unsigned*& __g_end, unsigned& __dc, _CharT* __atoms)

{

    if (__ct == __decimal_point)

    {

        if (!__in_units)

            return -1;

        __in_units = false;

        *__a_end++ = '.';

        if (__grouping.size() != 0 && __g_end-__g < __num_get_buf_sz)

            *__g_end++ = __dc;

        return 0;

    }

    if (__ct == __thousands_sep && __grouping.size() != 0)

    {

        if (!__in_units)

            return -1;

        if (__g_end-__g < __num_get_buf_sz)

        {

            *__g_end++ = __dc;

            __dc = 0;

        }

        return 0;

    }

    ptrdiff_t __f = find(__atoms, __atoms + 32, __ct) - __atoms;

    if (__f >= 32)

        return -1;

    char __x = __src[__f];

    if (__x == '-' || __x == '+')

    {

        if (__a_end == __a || (__a_end[-1] & 0x5F) == (__exp & 0x7F))

        {

            *__a_end++ = __x;

            return 0;

        }

        return -1;

    }

    if (__x == 'x' || __x == 'X')

        __exp = 'P';

    else if ((__x & 0x5F) == __exp)

    {

        __exp |= 0x80;

        if (__in_units)

        {

            __in_units = false;

            if (__grouping.size() != 0 && __g_end-__g < __num_get_buf_sz)

                *__g_end++ = __dc;

        }

    }

    *__a_end++ = __x;

    if (__f >= 22)

        return 0;

    ++__dc;

    return 0;

}

_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_get<char>)

_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_get<wchar_t>)

template <class _CharT, class _InputIterator = istreambuf_iterator<_CharT> >

class _LIBCPP_TYPE_VIS_ONLY num_get

    : public locale::facet,

      private __num_get<_CharT>

{

public:

    typedef _CharT char_type;

    typedef _InputIterator iter_type;

    _LIBCPP_ALWAYS_INLINE

    explicit num_get(size_t __refs = 0)

        : locale::facet(__refs) {}

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, bool& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, long& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, long long& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, unsigned short& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, unsigned int& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, unsigned long& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, unsigned long long& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, float& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, double& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, long double& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    _LIBCPP_ALWAYS_INLINE

    iter_type get(iter_type __b, iter_type __e, ios_base& __iob,

                  ios_base::iostate& __err, void*& __v) const

    {

        return do_get(__b, __e, __iob, __err, __v);

    }

    static locale::id id;

protected:

    _LIBCPP_ALWAYS_INLINE

    ~num_get() {}

    template <class _Fp>

    iter_type __do_get_floating_point

                            (iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, _Fp& __v) const;

    template <class _Signed>

    iter_type __do_get_signed

                            (iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, _Signed& __v) const;

    template <class _Unsigned>

    iter_type __do_get_unsigned

                            (iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, _Unsigned& __v) const;

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, bool& __v) const;

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, long& __v) const

    { return this->__do_get_signed ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, long long& __v) const

    { return this->__do_get_signed ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, unsigned short& __v) const

    { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, unsigned int& __v) const

    { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, unsigned long& __v) const

    { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, unsigned long long& __v) const

    { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, float& __v) const

    { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, double& __v) const

    { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, long double& __v) const

    { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

    virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,

                             ios_base::iostate& __err, void*& __v) const;

};

template <class _CharT, class _InputIterator>

locale::id

num_get<_CharT, _InputIterator>::id;

template <class _Tp>

_Tp

__num_get_signed_integral(const char* __a, const char* __a_end,

                          ios_base::iostate& __err, int __base)

{

    if (__a != __a_end)

    {

        typename remove_reference<decltype(errno)>::type __save_errno = errno;

        errno = 0;

        char *__p2;

        long long __ll = strtoll_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);

        typename remove_reference<decltype(errno)>::type __current_errno = errno;

        if (__current_errno == 0)

            errno = __save_errno;

        if (__p2 != __a_end)

        {

            __err = ios_base::failbit;

            return 0;

        }

        else if (__current_errno == ERANGE         ||

                 __ll < numeric_limits<_Tp>::min() ||

                 numeric_limits<_Tp>::max() < __ll)

        {

            __err = ios_base::failbit;

            if (__ll > 0)

                return numeric_limits<_Tp>::max();

            else

                return numeric_limits<_Tp>::min();

        }

        return static_cast<_Tp>(__ll);

    }

    __err = ios_base::failbit;

    return 0;

}

template <class _Tp>

_Tp

__num_get_unsigned_integral(const char* __a, const char* __a_end,

                            ios_base::iostate& __err, int __base)

{

    if (__a != __a_end)

    {

        if (*__a == '-')

        {

            __err = ios_base::failbit;

            return 0;

        }

        typename remove_reference<decltype(errno)>::type __save_errno = errno;

        errno = 0;

        char *__p2;

        unsigned long long __ll = strtoull_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);

        typename remove_reference<decltype(errno)>::type __current_errno = errno;

        if (__current_errno == 0)

            errno = __save_errno;

        if (__p2 != __a_end)

        {

            __err = ios_base::failbit;

            return 0;

        }

        else if (__current_errno == ERANGE ||

                 numeric_limits<_Tp>::max() < __ll)

        {

            __err = ios_base::failbit;

            return numeric_limits<_Tp>::max();

        }

        return static_cast<_Tp>(__ll);

    }

    __err = ios_base::failbit;

    return 0;

}

template <class _Tp>

_Tp

__num_get_float(const char* __a, const char* __a_end, ios_base::iostate& __err)

{

    if (__a != __a_end)

    {

        typename remove_reference<decltype(errno)>::type __save_errno = errno;

        errno = 0;

        char *__p2;

        long double __ld = strtold_l(__a, &__p2, _LIBCPP_GET_C_LOCALE);

        typename remove_reference<decltype(errno)>::type __current_errno = errno;

        if (__current_errno == 0)

            errno = __save_errno;

        if (__p2 != __a_end)

        {

            __err = ios_base::failbit;

            return 0;

        }

        else if (__current_errno == ERANGE)

            __err = ios_base::failbit;

        return static_cast<_Tp>(__ld);

    }

    __err = ios_base::failbit;

    return 0;

}

template <class _CharT, class _InputIterator>

_InputIterator

num_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,

                                        ios_base& __iob,

                                        ios_base::iostate& __err,

                                        bool& __v) const

{

    if ((__iob.flags() & ios_base::boolalpha) == 0)

    {

        long __lv = -1;

        __b = do_get(__b, __e, __iob, __err, __lv);

        switch (__lv)

        {

        case 0:

            __v = false;

            break;

        case 1:

            __v = true;

            break;

        default:

            __v = true;

            __err = ios_base::failbit;

            break;

        }

        return __b;

    }

    const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__iob.getloc());

    const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__iob.getloc());

    typedef typename numpunct<_CharT>::string_type string_type;

    const string_type __names[2] = {__np.truename(), __np.falsename()};

    const string_type* __i = __scan_keyword(__b, __e, __names, __names+2,

                                            __ct, __err);

    __v = __i == __names;

    return __b;

}

// signed

template <class _CharT, class _InputIterator>

template <class _Signed>

_InputIterator

num_get<_CharT, _InputIterator>::__do_get_signed(iter_type __b, iter_type __e,

                                        ios_base& __iob,

                                        ios_base::iostate& __err,

                                        _Signed& __v) const

{

    // Stage 1

    int __base = this->__get_base(__iob);

    // Stage 2

    char_type __atoms[26];

    char_type __thousands_sep;

    string __grouping = this->__stage2_int_prep(__iob, __atoms, __thousands_sep);

    string __buf;

    __buf.resize(__buf.capacity());

    char* __a = &__buf[0];

    char* __a_end = __a;

    unsigned __g[__num_get_base::__num_get_buf_sz];

    unsigned* __g_end = __g;

    unsigned __dc = 0;

    for (; __b != __e; ++__b)

    {

        if (__a_end == __a + __buf.size())

        {

            size_t __tmp = __buf.size();

            __buf.resize(2*__buf.size());

            __buf.resize(__buf.capacity());

            __a = &__buf[0];

            __a_end = __a + __tmp;

        }

        if (this->__stage2_int_loop(*__b, __base, __a, __a_end, __dc,

                                    __thousands_sep, __grouping, __g, __g_end,

                                    __atoms))

            break;

    }

    if (__grouping.size() != 0 && __g_end-__g < __num_get_base::__num_get_buf_sz)

        *__g_end++ = __dc;

    // Stage 3

    __v = __num_get_signed_integral<_Signed>(__a, __a_end, __err, __base);

    // Digit grouping checked

    __check_grouping(__grouping, __g, __g_end, __err);

    // EOF checked

    if (__b == __e)

        __err |= ios_base::eofbit;

    return __b;

}

// unsigned

template <class _CharT, class _InputIterator>

template <class _Unsigned>

_InputIterator

num_get<_CharT, _InputIterator>::__do_get_unsigned(iter_type __b, iter_type __e,

                                        ios_base& __iob,

                                        ios_base::iostate& __err,

                                        _Unsigned& __v) const

{

    // Stage 1

    int __base = this->__get_base(__iob);

    // Stage 2

    char_type __atoms[26];

    char_type __thousands_sep;

    string __grouping = this->__stage2_int_prep(__iob, __atoms, __thousands_sep);

    string __buf;

    __buf.resize(__buf.capacity());

    char* __a = &__buf[0];

    char* __a_end = __a;

    unsigned __g[__num_get_base::__num_get_buf_sz];

    unsigned* __g_end = __g;

    unsigned __dc = 0;

    for (; __b != __e; ++__b)

    {

        if (__a_end == __a + __buf.size())

        {

            size_t __tmp = __buf.size();

            __buf.resize(2*__buf.size());

            __buf.resize(__buf.capacity());

            __a = &__buf[0];

            __a_end = __a + __tmp;

        }

        if (this->__stage2_int_loop(*__b, __base, __a, __a_end, __dc,

                                    __thousands_sep, __grouping, __g, __g_end,

                                    __atoms))

            break;

    }

    if (__grouping.size() != 0 && __g_end-__g < __num_get_base::__num_get_buf_sz)

        *__g_end++ = __dc;

    // Stage 3

    __v = __num_get_unsigned_integral<_Unsigned>(__a, __a_end, __err, __base);

    // Digit grouping checked

    __check_grouping(__grouping, __g, __g_end, __err);

    // EOF checked

    if (__b == __e)

        __err |= ios_base::eofbit;

    return __b;

}

// floating point

template <class _CharT, class _InputIterator>

template <class _Fp>

_InputIterator

num_get<_CharT, _InputIterator>::__do_get_floating_point(iter_type __b, iter_type __e,

                                        ios_base& __iob,

                                        ios_base::iostate& __err,

                                        _Fp& __v) const

{

    // Stage 1, nothing to do

    // Stage 2

    char_type __atoms[32];

    char_type __decimal_point;

    char_type __thousands_sep;

    string __grouping = this->__stage2_float_prep(__iob, __atoms,

                                                  __decimal_point,

                                                  __thousands_sep);

    string __buf;

    __buf.resize(__buf.capacity());

    char* __a = &__buf[0];

    char* __a_end = __a;

    unsigned __g[__num_get_base::__num_get_buf_sz];

    unsigned* __g_end = __g;

    unsigned __dc = 0;

    bool __in_units = true;

    char __exp = 'E';

    for (; __b != __e; ++__b)

    {

        if (__a_end == __a + __buf.size())

        {

            size_t __tmp = __buf.size();

            __buf.resize(2*__buf.size());

            __buf.resize(__buf.capacity());

            __a = &__buf[0];