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// -*- C++ -*-
//===--------------------------- string -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_STRING
#define _LIBCPP_STRING
/*
string synopsis
namespace std
{
template <class stateT>
class fpos
{
private:
stateT st;
public:
fpos(streamoff = streamoff());
operator streamoff() const;
stateT state() const;
void state(stateT);
fpos& operator+=(streamoff);
fpos operator+ (streamoff) const;
fpos& operator-=(streamoff);
fpos operator- (streamoff) const;
};
template <class stateT> streamoff operator-(const fpos<stateT>& x, const fpos<stateT>& y);
template <class stateT> bool operator==(const fpos<stateT>& x, const fpos<stateT>& y);
template <class stateT> bool operator!=(const fpos<stateT>& x, const fpos<stateT>& y);
template <class charT>
struct char_traits
{
typedef charT char_type;
typedef ... int_type;
typedef streamoff off_type;
typedef streampos pos_type;
typedef mbstate_t state_type;
static void assign(char_type& c1, const char_type& c2) noexcept;
static constexpr bool eq(char_type c1, char_type c2) noexcept;
static constexpr bool lt(char_type c1, char_type c2) noexcept;
static int compare(const char_type* s1, const char_type* s2, size_t n);
static size_t length(const char_type* s);
static const char_type* find(const char_type* s, size_t n, const char_type& a);
static char_type* move(char_type* s1, const char_type* s2, size_t n);
static char_type* copy(char_type* s1, const char_type* s2, size_t n);
static char_type* assign(char_type* s, size_t n, char_type a);
static constexpr int_type not_eof(int_type c) noexcept;
static constexpr char_type to_char_type(int_type c) noexcept;
static constexpr int_type to_int_type(char_type c) noexcept;
static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept;
static constexpr int_type eof() noexcept;
};
template <> struct char_traits<char>;
template <> struct char_traits<wchar_t>;
template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
class basic_string
{
public:
// types:
typedef traits traits_type;
typedef typename traits_type::char_type value_type;
typedef Allocator allocator_type;
typedef typename allocator_type::size_type size_type;
typedef typename allocator_type::difference_type difference_type;
typedef typename allocator_type::reference reference;
typedef typename allocator_type::const_reference const_reference;
typedef typename allocator_type::pointer pointer;
typedef typename allocator_type::const_pointer const_pointer;
typedef implementation-defined iterator;
typedef implementation-defined const_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
static const size_type npos = -1;
basic_string()
noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit basic_string(const allocator_type& a);
basic_string(const basic_string& str);
basic_string(basic_string&& str)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
basic_string(const basic_string& str, size_type pos, size_type n = npos,
const allocator_type& a = allocator_type());
basic_string(const value_type* s, const allocator_type& a = allocator_type());
basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type());
basic_string(size_type n, value_type c, const allocator_type& a = allocator_type());
template<class InputIterator>
basic_string(InputIterator begin, InputIterator end,
const allocator_type& a = allocator_type());
basic_string(initializer_list<value_type>, const Allocator& = Allocator());
basic_string(const basic_string&, const Allocator&);
basic_string(basic_string&&, const Allocator&);
~basic_string();
basic_string& operator=(const basic_string& str);
basic_string& operator=(basic_string&& str)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value);
basic_string& operator=(const value_type* s);
basic_string& operator=(value_type c);
basic_string& operator=(initializer_list<value_type>);
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
reverse_iterator rbegin() noexcept;
const_reverse_iterator rbegin() const noexcept;
reverse_iterator rend() noexcept;
const_reverse_iterator rend() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
const_reverse_iterator crbegin() const noexcept;
const_reverse_iterator crend() const noexcept;
size_type size() const noexcept;
size_type length() const noexcept;
size_type max_size() const noexcept;
size_type capacity() const noexcept;
void resize(size_type n, value_type c);
void resize(size_type n);
void reserve(size_type res_arg = 0);
void shrink_to_fit();
void clear() noexcept;
bool empty() const noexcept;
const_reference operator[](size_type pos) const;
reference operator[](size_type pos);
const_reference at(size_type n) const;
reference at(size_type n);
basic_string& operator+=(const basic_string& str);
basic_string& operator+=(const value_type* s);
basic_string& operator+=(value_type c);
basic_string& operator+=(initializer_list<value_type>);
basic_string& append(const basic_string& str);
basic_string& append(const basic_string& str, size_type pos, size_type n=npos); //C++14
basic_string& append(const value_type* s, size_type n);
basic_string& append(const value_type* s);
basic_string& append(size_type n, value_type c);
template<class InputIterator>
basic_string& append(InputIterator first, InputIterator last);
basic_string& append(initializer_list<value_type>);
void push_back(value_type c);
void pop_back();
reference front();
const_reference front() const;
reference back();
const_reference back() const;
basic_string& assign(const basic_string& str);
basic_string& assign(basic_string&& str);
basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14
basic_string& assign(const value_type* s, size_type n);
basic_string& assign(const value_type* s);
basic_string& assign(size_type n, value_type c);
template<class InputIterator>
basic_string& assign(InputIterator first, InputIterator last);
basic_string& assign(initializer_list<value_type>);
basic_string& insert(size_type pos1, const basic_string& str);
basic_string& insert(size_type pos1, const basic_string& str,
size_type pos2, size_type n);
basic_string& insert(size_type pos, const value_type* s, size_type n=npos); //C++14
basic_string& insert(size_type pos, const value_type* s);
basic_string& insert(size_type pos, size_type n, value_type c);
iterator insert(const_iterator p, value_type c);
iterator insert(const_iterator p, size_type n, value_type c);
template<class InputIterator>
iterator insert(const_iterator p, InputIterator first, InputIterator last);
iterator insert(const_iterator p, initializer_list<value_type>);
basic_string& erase(size_type pos = 0, size_type n = npos);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
basic_string& replace(size_type pos1, size_type n1, const basic_string& str);
basic_string& replace(size_type pos1, size_type n1, const basic_string& str,
size_type pos2, size_type n2=npos); // C++14
basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2);
basic_string& replace(size_type pos, size_type n1, const value_type* s);
basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c);
basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str);
basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n);
basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s);
basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c);
template<class InputIterator>
basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2);
basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>);
size_type copy(value_type* s, size_type n, size_type pos = 0) const;
basic_string substr(size_type pos = 0, size_type n = npos) const;
void swap(basic_string& str)
noexcept(!allocator_type::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value)
const value_type* c_str() const noexcept;
const value_type* data() const noexcept;
allocator_type get_allocator() const noexcept;
size_type find(const basic_string& str, size_type pos = 0) const noexcept;
size_type find(const value_type* s, size_type pos, size_type n) const noexcept;
size_type find(const value_type* s, size_type pos = 0) const noexcept;
size_type find(value_type c, size_type pos = 0) const noexcept;
size_type rfind(const basic_string& str, size_type pos = npos) const noexcept;
size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept;
size_type rfind(const value_type* s, size_type pos = npos) const noexcept;
size_type rfind(value_type c, size_type pos = npos) const noexcept;
size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept;
size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept;
size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept;
size_type find_first_of(value_type c, size_type pos = 0) const noexcept;
size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept;
size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept;
size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept;
size_type find_last_of(value_type c, size_type pos = npos) const noexcept;
size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept;
size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept;
size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept;
size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept;
size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept;
size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept;
size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept;
size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept;
int compare(const basic_string& str) const noexcept;
int compare(size_type pos1, size_type n1, const basic_string& str) const;
int compare(size_type pos1, size_type n1, const basic_string& str,
size_type pos2, size_type n2=npos) const; // C++14
int compare(const value_type* s) const noexcept;
int compare(size_type pos1, size_type n1, const value_type* s) const;
int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const;
bool __invariants() const;
};
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs);
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs);
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs);
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs);
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs);
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator< (const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator> (const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator<=(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator>=(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept;
template<class charT, class traits, class Allocator>
bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator>
void swap(basic_string<charT, traits, Allocator>& lhs,
basic_string<charT, traits, Allocator>& rhs)
noexcept(noexcept(lhs.swap(rhs)));
template<class charT, class traits, class Allocator>
basic_istream<charT, traits>&
operator>>(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
template<class charT, class traits, class Allocator>
basic_ostream<charT, traits>&
operator<<(basic_ostream<charT, traits>& os, const basic_string<charT, traits, Allocator>& str);
template<class charT, class traits, class Allocator>
basic_istream<charT, traits>&
getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str,
charT delim);
template<class charT, class traits, class Allocator>
basic_istream<charT, traits>&
getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
typedef basic_string<char> string;
typedef basic_string<wchar_t> wstring;
typedef basic_string<char16_t> u16string;
typedef basic_string<char32_t> u32string;
int stoi (const string& str, size_t* idx = 0, int base = 10);
long stol (const string& str, size_t* idx = 0, int base = 10);
unsigned long stoul (const string& str, size_t* idx = 0, int base = 10);
long long stoll (const string& str, size_t* idx = 0, int base = 10);
unsigned long long stoull(const string& str, size_t* idx = 0, int base = 10);
float stof (const string& str, size_t* idx = 0);
double stod (const string& str, size_t* idx = 0);
long double stold(const string& str, size_t* idx = 0);
string to_string(int val);
string to_string(unsigned val);
string to_string(long val);
string to_string(unsigned long val);
string to_string(long long val);
string to_string(unsigned long long val);
string to_string(float val);
string to_string(double val);
string to_string(long double val);
int stoi (const wstring& str, size_t* idx = 0, int base = 10);
long stol (const wstring& str, size_t* idx = 0, int base = 10);
unsigned long stoul (const wstring& str, size_t* idx = 0, int base = 10);
long long stoll (const wstring& str, size_t* idx = 0, int base = 10);
unsigned long long stoull(const wstring& str, size_t* idx = 0, int base = 10);
float stof (const wstring& str, size_t* idx = 0);
double stod (const wstring& str, size_t* idx = 0);
long double stold(const wstring& str, size_t* idx = 0);
wstring to_wstring(int val);
wstring to_wstring(unsigned val);
wstring to_wstring(long val);
wstring to_wstring(unsigned long val);
wstring to_wstring(long long val);
wstring to_wstring(unsigned long long val);
wstring to_wstring(float val);
wstring to_wstring(double val);
wstring to_wstring(long double val);
template <> struct hash<string>;
template <> struct hash<u16string>;
template <> struct hash<u32string>;
template <> struct hash<wstring>;
basic_string<char> operator "" s( const char *str, size_t len ); // C++14
basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14
basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14
basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14
} // std
*/
#include <__config>
#include <iosfwd>
#include <cstring>
#include <cstdio> // For EOF.
#include <cwchar>
#include <algorithm>
#include <iterator>
#include <utility>
#include <memory>
#include <stdexcept>
#include <type_traits>
#include <initializer_list>
#include <__functional_base>
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
#include <cstdint>
#endif
#if defined(_LIBCPP_NO_EXCEPTIONS)
#include <cassert>
#endif
#include <__undef_min_max>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
// fpos
template <class _StateT>
class _LIBCPP_TYPE_VIS_ONLY fpos
{
private:
_StateT __st_;
streamoff __off_;
public:
_LIBCPP_INLINE_VISIBILITY fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {}
_LIBCPP_INLINE_VISIBILITY operator streamoff() const {return __off_;}
_LIBCPP_INLINE_VISIBILITY _StateT state() const {return __st_;}
_LIBCPP_INLINE_VISIBILITY void state(_StateT __st) {__st_ = __st;}
_LIBCPP_INLINE_VISIBILITY fpos& operator+=(streamoff __off) {__off_ += __off; return *this;}
_LIBCPP_INLINE_VISIBILITY fpos operator+ (streamoff __off) const {fpos __t(*this); __t += __off; return __t;}
_LIBCPP_INLINE_VISIBILITY fpos& operator-=(streamoff __off) {__off_ -= __off; return *this;}
_LIBCPP_INLINE_VISIBILITY fpos operator- (streamoff __off) const {fpos __t(*this); __t -= __off; return __t;}
};
template <class _StateT>
inline _LIBCPP_INLINE_VISIBILITY
streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
{return streamoff(__x) - streamoff(__y);}
template <class _StateT>
inline _LIBCPP_INLINE_VISIBILITY
bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
{return streamoff(__x) == streamoff(__y);}
template <class _StateT>
inline _LIBCPP_INLINE_VISIBILITY
bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y)
{return streamoff(__x) != streamoff(__y);}
// char_traits
template <class _CharT>
struct _LIBCPP_TYPE_VIS_ONLY char_traits
{
typedef _CharT char_type;
typedef int int_type;
typedef streamoff off_type;
typedef streampos pos_type;
typedef mbstate_t state_type;
_LIBCPP_INLINE_VISIBILITY
static void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT
{__c1 = __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 < __c2;}
static int compare(const char_type* __s1, const char_type* __s2, size_t __n);
static size_t length(const char_type* __s);
static const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
static char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* assign(char_type* __s, size_t __n, char_type __a);
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT
{return eq_int_type(__c, eof()) ? ~eof() : __c;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT
{return char_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT
{return int_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT
{return int_type(EOF);}
};
template <class _CharT>
int
char_traits<_CharT>::compare(const char_type* __s1, const char_type* __s2, size_t __n)
{
for (; __n; --__n, ++__s1, ++__s2)
{
if (lt(*__s1, *__s2))
return -1;
if (lt(*__s2, *__s1))
return 1;
}
return 0;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
size_t
char_traits<_CharT>::length(const char_type* __s)
{
size_t __len = 0;
for (; !eq(*__s, char_type(0)); ++__s)
++__len;
return __len;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
const _CharT*
char_traits<_CharT>::find(const char_type* __s, size_t __n, const char_type& __a)
{
for (; __n; --__n)
{
if (eq(*__s, __a))
return __s;
++__s;
}
return 0;
}
template <class _CharT>
_CharT*
char_traits<_CharT>::move(char_type* __s1, const char_type* __s2, size_t __n)
{
char_type* __r = __s1;
if (__s1 < __s2)
{
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
}
else if (__s2 < __s1)
{
__s1 += __n;
__s2 += __n;
for (; __n; --__n)
assign(*--__s1, *--__s2);
}
return __r;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
_CharT*
char_traits<_CharT>::copy(char_type* __s1, const char_type* __s2, size_t __n)
{
_LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
char_type* __r = __s1;
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
return __r;
}
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
_CharT*
char_traits<_CharT>::assign(char_type* __s, size_t __n, char_type __a)
{
char_type* __r = __s;
for (; __n; --__n, ++__s)
assign(*__s, __a);
return __r;
}
// char_traits<char>
template <>
struct _LIBCPP_TYPE_VIS_ONLY char_traits<char>
{
typedef char char_type;
typedef int int_type;
typedef streamoff off_type;
typedef streampos pos_type;
typedef mbstate_t state_type;
_LIBCPP_INLINE_VISIBILITY
static void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT
{__c1 = __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT
{return (unsigned char)__c1 < (unsigned char)__c2;}
_LIBCPP_INLINE_VISIBILITY
static int compare(const char_type* __s1, const char_type* __s2, size_t __n)
{return memcmp(__s1, __s2, __n);}
_LIBCPP_INLINE_VISIBILITY
static size_t length(const char_type* __s) {return strlen(__s);}
_LIBCPP_INLINE_VISIBILITY
static const char_type* find(const char_type* __s, size_t __n, const char_type& __a)
{return (const char_type*)memchr(__s, to_int_type(__a), __n);}
_LIBCPP_INLINE_VISIBILITY
static char_type* move(char_type* __s1, const char_type* __s2, size_t __n)
{return (char_type*)memmove(__s1, __s2, __n);}
_LIBCPP_INLINE_VISIBILITY
static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n)
{
_LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
return (char_type*)memcpy(__s1, __s2, __n);
}
_LIBCPP_INLINE_VISIBILITY
static char_type* assign(char_type* __s, size_t __n, char_type __a)
{return (char_type*)memset(__s, to_int_type(__a), __n);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT
{return eq_int_type(__c, eof()) ? ~eof() : __c;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT
{return char_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT
{return int_type((unsigned char)__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT
{return int_type(EOF);}
};
// char_traits<wchar_t>
template <>
struct _LIBCPP_TYPE_VIS_ONLY char_traits<wchar_t>
{
typedef wchar_t char_type;
typedef wint_t int_type;
typedef streamoff off_type;
typedef streampos pos_type;
typedef mbstate_t state_type;
_LIBCPP_INLINE_VISIBILITY
static void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT
{__c1 = __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 < __c2;}
_LIBCPP_INLINE_VISIBILITY
static int compare(const char_type* __s1, const char_type* __s2, size_t __n)
{return wmemcmp(__s1, __s2, __n);}
_LIBCPP_INLINE_VISIBILITY
static size_t length(const char_type* __s)
{return wcslen(__s);}
_LIBCPP_INLINE_VISIBILITY
static const char_type* find(const char_type* __s, size_t __n, const char_type& __a)
{return (const char_type*)wmemchr(__s, __a, __n);}
_LIBCPP_INLINE_VISIBILITY
static char_type* move(char_type* __s1, const char_type* __s2, size_t __n)
{return (char_type*)wmemmove(__s1, __s2, __n);}
_LIBCPP_INLINE_VISIBILITY
static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n)
{
_LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
return (char_type*)wmemcpy(__s1, __s2, __n);
}
_LIBCPP_INLINE_VISIBILITY
static char_type* assign(char_type* __s, size_t __n, char_type __a)
{return (char_type*)wmemset(__s, __a, __n);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT
{return eq_int_type(__c, eof()) ? ~eof() : __c;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT
{return char_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT
{return int_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT
{return int_type(WEOF);}
};
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
template <>
struct _LIBCPP_TYPE_VIS_ONLY char_traits<char16_t>
{
typedef char16_t char_type;
typedef uint_least16_t int_type;
typedef streamoff off_type;
typedef u16streampos pos_type;
typedef mbstate_t state_type;
_LIBCPP_INLINE_VISIBILITY
static void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT
{__c1 = __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 < __c2;}
static int compare(const char_type* __s1, const char_type* __s2, size_t __n);
static size_t length(const char_type* __s);
static const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
static char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* assign(char_type* __s, size_t __n, char_type __a);
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT
{return eq_int_type(__c, eof()) ? ~eof() : __c;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT
{return char_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT
{return int_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT
{return int_type(0xDFFF);}
};
inline _LIBCPP_INLINE_VISIBILITY
int
char_traits<char16_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n)
{
for (; __n; --__n, ++__s1, ++__s2)
{
if (lt(*__s1, *__s2))
return -1;
if (lt(*__s2, *__s1))
return 1;
}
return 0;
}
inline _LIBCPP_INLINE_VISIBILITY
size_t
char_traits<char16_t>::length(const char_type* __s)
{
size_t __len = 0;
for (; !eq(*__s, char_type(0)); ++__s)
++__len;
return __len;
}
inline _LIBCPP_INLINE_VISIBILITY
const char16_t*
char_traits<char16_t>::find(const char_type* __s, size_t __n, const char_type& __a)
{
for (; __n; --__n)
{
if (eq(*__s, __a))
return __s;
++__s;
}
return 0;
}
inline _LIBCPP_INLINE_VISIBILITY
char16_t*
char_traits<char16_t>::move(char_type* __s1, const char_type* __s2, size_t __n)
{
char_type* __r = __s1;
if (__s1 < __s2)
{
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
}
else if (__s2 < __s1)
{
__s1 += __n;
__s2 += __n;
for (; __n; --__n)
assign(*--__s1, *--__s2);
}
return __r;
}
inline _LIBCPP_INLINE_VISIBILITY
char16_t*
char_traits<char16_t>::copy(char_type* __s1, const char_type* __s2, size_t __n)
{
_LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
char_type* __r = __s1;
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
return __r;
}
inline _LIBCPP_INLINE_VISIBILITY
char16_t*
char_traits<char16_t>::assign(char_type* __s, size_t __n, char_type __a)
{
char_type* __r = __s;
for (; __n; --__n, ++__s)
assign(*__s, __a);
return __r;
}
template <>
struct _LIBCPP_TYPE_VIS_ONLY char_traits<char32_t>
{
typedef char32_t char_type;
typedef uint_least32_t int_type;
typedef streamoff off_type;
typedef u32streampos pos_type;
typedef mbstate_t state_type;
_LIBCPP_INLINE_VISIBILITY
static void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT
{__c1 = __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT
{return __c1 < __c2;}
static int compare(const char_type* __s1, const char_type* __s2, size_t __n);
static size_t length(const char_type* __s);
static const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
static char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
static char_type* assign(char_type* __s, size_t __n, char_type __a);
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT
{return eq_int_type(__c, eof()) ? ~eof() : __c;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT
{return char_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT
{return int_type(__c);}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT
{return __c1 == __c2;}
_LIBCPP_INLINE_VISIBILITY
static _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT
{return int_type(0xFFFFFFFF);}
};
inline _LIBCPP_INLINE_VISIBILITY
int
char_traits<char32_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n)
{
for (; __n; --__n, ++__s1, ++__s2)
{
if (lt(*__s1, *__s2))
return -1;
if (lt(*__s2, *__s1))
return 1;
}
return 0;
}
inline _LIBCPP_INLINE_VISIBILITY
size_t
char_traits<char32_t>::length(const char_type* __s)
{
size_t __len = 0;
for (; !eq(*__s, char_type(0)); ++__s)
++__len;
return __len;
}
inline _LIBCPP_INLINE_VISIBILITY
const char32_t*
char_traits<char32_t>::find(const char_type* __s, size_t __n, const char_type& __a)
{
for (; __n; --__n)
{
if (eq(*__s, __a))
return __s;
++__s;
}
return 0;
}
inline _LIBCPP_INLINE_VISIBILITY
char32_t*
char_traits<char32_t>::move(char_type* __s1, const char_type* __s2, size_t __n)
{
char_type* __r = __s1;
if (__s1 < __s2)
{
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
}
else if (__s2 < __s1)
{
__s1 += __n;
__s2 += __n;
for (; __n; --__n)
assign(*--__s1, *--__s2);
}
return __r;
}
inline _LIBCPP_INLINE_VISIBILITY
char32_t*
char_traits<char32_t>::copy(char_type* __s1, const char_type* __s2, size_t __n)
{
_LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range");
char_type* __r = __s1;
for (; __n; --__n, ++__s1, ++__s2)
assign(*__s1, *__s2);
return __r;
}
inline _LIBCPP_INLINE_VISIBILITY
char32_t*
char_traits<char32_t>::assign(char_type* __s, size_t __n, char_type __a)
{
char_type* __r = __s;
for (; __n; --__n, ++__s)
assign(*__s, __a);
return __r;
}
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
// helper fns for basic_string
// __str_find
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find(const _CharT *__p, _SizeT __sz,
_CharT __c, _SizeT __pos) _NOEXCEPT
{
if (__pos >= __sz)
return __npos;
const _CharT* __r = _Traits::find(__p + __pos, __sz - __pos, __c);
if (__r == 0)
return __npos;
return static_cast<_SizeT>(__r - __p);
}
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
if (__pos > __sz || __sz - __pos < __n)
return __npos;
if (__n == 0)
return __pos;
const _CharT* __r =
_VSTD::__search(__p + __pos, __p + __sz,
__s, __s + __n, _Traits::eq,
random_access_iterator_tag(), random_access_iterator_tag());
if (__r == __p + __sz)
return __npos;
return static_cast<_SizeT>(__r - __p);
}
// __str_rfind
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_rfind(const _CharT *__p, _SizeT __sz,
_CharT __c, _SizeT __pos) _NOEXCEPT
{
if (__sz < 1)
return __npos;
if (__pos < __sz)
++__pos;
else
__pos = __sz;
for (const _CharT* __ps = __p + __pos; __ps != __p;)
{
if (_Traits::eq(*--__ps, __c))
return static_cast<_SizeT>(__ps - __p);
}
return __npos;
}
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_rfind(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
__pos = _VSTD::min(__pos, __sz);
if (__n < __sz - __pos)
__pos += __n;
else
__pos = __sz;
const _CharT* __r = _VSTD::__find_end(
__p, __p + __pos, __s, __s + __n, _Traits::eq,
random_access_iterator_tag(), random_access_iterator_tag());
if (__n > 0 && __r == __p + __pos)
return __npos;
return static_cast<_SizeT>(__r - __p);
}
// __str_find_first_of
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_first_of(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
if (__pos >= __sz || __n == 0)
return __npos;
const _CharT* __r = _VSTD::__find_first_of_ce
(__p + __pos, __p + __sz, __s, __s + __n, _Traits::eq );
if (__r == __p + __sz)
return __npos;
return static_cast<_SizeT>(__r - __p);
}
// __str_find_last_of
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_last_of(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
if (__n != 0)
{
if (__pos < __sz)
++__pos;
else
__pos = __sz;
for (const _CharT* __ps = __p + __pos; __ps != __p;)
{
const _CharT* __r = _Traits::find(__s, __n, *--__ps);
if (__r)
return static_cast<_SizeT>(__ps - __p);
}
}
return __npos;
}
// __str_find_first_not_of
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_first_not_of(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
if (__pos < __sz)
{
const _CharT* __pe = __p + __sz;
for (const _CharT* __ps = __p + __pos; __ps != __pe; ++__ps)
if (_Traits::find(__s, __n, *__ps) == 0)
return static_cast<_SizeT>(__ps - __p);
}
return __npos;
}
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_first_not_of(const _CharT *__p, _SizeT __sz,
_CharT __c, _SizeT __pos) _NOEXCEPT
{
if (__pos < __sz)
{
const _CharT* __pe = __p + __sz;
for (const _CharT* __ps = __p + __pos; __ps != __pe; ++__ps)
if (!_Traits::eq(*__ps, __c))
return static_cast<_SizeT>(__ps - __p);
}
return __npos;
}
// __str_find_last_not_of
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_last_not_of(const _CharT *__p, _SizeT __sz,
const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT
{
if (__pos < __sz)
++__pos;
else
__pos = __sz;
for (const _CharT* __ps = __p + __pos; __ps != __p;)
if (_Traits::find(__s, __n, *--__ps) == 0)
return static_cast<_SizeT>(__ps - __p);
return __npos;
}
template<class _CharT, class _SizeT, class _Traits, _SizeT __npos>
_SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
__str_find_last_not_of(const _CharT *__p, _SizeT __sz,
_CharT __c, _SizeT __pos) _NOEXCEPT
{
if (__pos < __sz)
++__pos;
else
__pos = __sz;
for (const _CharT* __ps = __p + __pos; __ps != __p;)
if (!_Traits::eq(*--__ps, __c))
return static_cast<_SizeT>(__ps - __p);
return __npos;
}
template<class _Ptr>
size_t _LIBCPP_INLINE_VISIBILITY __do_string_hash(_Ptr __p, _Ptr __e)
{
typedef typename iterator_traits<_Ptr>::value_type value_type;
return __murmur2_or_cityhash<size_t>()(__p, (__e-__p)*sizeof(value_type));
}
// basic_string
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x,
const basic_string<_CharT, _Traits, _Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y);
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y);
template <bool>
class _LIBCPP_TYPE_VIS_ONLY __basic_string_common
{
protected:
void __throw_length_error() const;
void __throw_out_of_range() const;
};
template <bool __b>
void
__basic_string_common<__b>::__throw_length_error() const
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw length_error("basic_string");
#else
assert(!"basic_string length_error");
#endif
}
template <bool __b>
void
__basic_string_common<__b>::__throw_out_of_range() const
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("basic_string");
#else
assert(!"basic_string out_of_range");
#endif
}
#ifdef _LIBCPP_MSVC
#pragma warning( push )
#pragma warning( disable: 4231 )
#endif // _LIBCPP_MSVC
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS __basic_string_common<true>)
#ifdef _LIBCPP_MSVC
#pragma warning( pop )
#endif // _LIBCPP_MSVC
#ifdef _LIBCPP_ALTERNATE_STRING_LAYOUT
template <class _CharT, size_t = sizeof(_CharT)>
struct __padding
{
unsigned char __xx[sizeof(_CharT)-1];
};
template <class _CharT>
struct __padding<_CharT, 1>
{
};
#endif // _LIBCPP_ALTERNATE_STRING_LAYOUT
template<class _CharT, class _Traits, class _Allocator>
class _LIBCPP_TYPE_VIS_ONLY basic_string
: private __basic_string_common<true>
{
public:
typedef basic_string __self;
typedef _Traits traits_type;
typedef typename traits_type::char_type value_type;
typedef _Allocator allocator_type;
typedef allocator_traits<allocator_type> __alloc_traits;
typedef typename __alloc_traits::size_type size_type;
typedef typename __alloc_traits::difference_type difference_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename __alloc_traits::pointer pointer;
typedef typename __alloc_traits::const_pointer const_pointer;
static_assert(is_pod<value_type>::value, "Character type of basic_string must be a POD");
static_assert((is_same<_CharT, value_type>::value),
"traits_type::char_type must be the same type as CharT");
static_assert((is_same<typename allocator_type::value_type, value_type>::value),
"Allocator::value_type must be same type as value_type");
#if defined(_LIBCPP_RAW_ITERATORS)
typedef pointer iterator;
typedef const_pointer const_iterator;
#else // defined(_LIBCPP_RAW_ITERATORS)
typedef __wrap_iter<pointer> iterator;
typedef __wrap_iter<const_pointer> const_iterator;
#endif // defined(_LIBCPP_RAW_ITERATORS)
typedef _VSTD::reverse_iterator<iterator> reverse_iterator;
typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
private:
#ifdef _LIBCPP_ALTERNATE_STRING_LAYOUT
struct __long
{
pointer __data_;
size_type __size_;
size_type __cap_;
};
#if _LIBCPP_BIG_ENDIAN
enum {__short_mask = 0x01};
enum {__long_mask = 0x1ul};
#else // _LIBCPP_BIG_ENDIAN
enum {__short_mask = 0x80};
enum {__long_mask = ~(size_type(~0) >> 1)};
#endif // _LIBCPP_BIG_ENDIAN
enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
(sizeof(__long) - 1)/sizeof(value_type) : 2};
struct __short
{
value_type __data_[__min_cap];
struct
: __padding<value_type>
{
unsigned char __size_;
};
};
#else
struct __long
{
size_type __cap_;
size_type __size_;
pointer __data_;
};
#if _LIBCPP_BIG_ENDIAN
enum {__short_mask = 0x80};
enum {__long_mask = ~(size_type(~0) >> 1)};
#else // _LIBCPP_BIG_ENDIAN
enum {__short_mask = 0x01};
enum {__long_mask = 0x1ul};
#endif // _LIBCPP_BIG_ENDIAN
enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
(sizeof(__long) - 1)/sizeof(value_type) : 2};
struct __short
{
union
{
unsigned char __size_;
value_type __lx;
};
value_type __data_[__min_cap];
};
#endif // _LIBCPP_ALTERNATE_STRING_LAYOUT
union __ulx{__long __lx; __short __lxx;};
enum {__n_words = sizeof(__ulx) / sizeof(size_type)};
struct __raw
{
size_type __words[__n_words];
};
struct __rep
{
union
{
__long __l;
__short __s;
__raw __r;
};
};
__compressed_pair<__rep, allocator_type> __r_;
public:
static const size_type npos = -1;
_LIBCPP_INLINE_VISIBILITY basic_string()
_NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value);
_LIBCPP_INLINE_VISIBILITY explicit basic_string(const allocator_type& __a);
basic_string(const basic_string& __str);
basic_string(const basic_string& __str, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY
basic_string(basic_string&& __str)
_NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
_LIBCPP_INLINE_VISIBILITY
basic_string(basic_string&& __str, const allocator_type& __a);
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY basic_string(const value_type* __s);
_LIBCPP_INLINE_VISIBILITY
basic_string(const value_type* __s, const allocator_type& __a);
_LIBCPP_INLINE_VISIBILITY
basic_string(const value_type* __s, size_type __n);
_LIBCPP_INLINE_VISIBILITY
basic_string(const value_type* __s, size_type __n, const allocator_type& __a);
_LIBCPP_INLINE_VISIBILITY
basic_string(size_type __n, value_type __c);
_LIBCPP_INLINE_VISIBILITY
basic_string(size_type __n, value_type __c, const allocator_type& __a);
basic_string(const basic_string& __str, size_type __pos, size_type __n = npos,
const allocator_type& __a = allocator_type());
template<class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
basic_string(_InputIterator __first, _InputIterator __last);
template<class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string(initializer_list<value_type> __il);
_LIBCPP_INLINE_VISIBILITY
basic_string(initializer_list<value_type> __il, const allocator_type& __a);
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
~basic_string();
basic_string& operator=(const basic_string& __str);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY
basic_string& operator=(basic_string&& __str)
_NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value);
#endif
_LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);}
basic_string& operator=(value_type __c);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_INLINE_VISIBILITY
iterator begin() _NOEXCEPT
{return iterator(this, __get_pointer());}
_LIBCPP_INLINE_VISIBILITY
const_iterator begin() const _NOEXCEPT
{return const_iterator(this, __get_pointer());}
_LIBCPP_INLINE_VISIBILITY
iterator end() _NOEXCEPT
{return iterator(this, __get_pointer() + size());}
_LIBCPP_INLINE_VISIBILITY
const_iterator end() const _NOEXCEPT
{return const_iterator(this, __get_pointer() + size());}
#else
_LIBCPP_INLINE_VISIBILITY
iterator begin() _NOEXCEPT
{return iterator(__get_pointer());}
_LIBCPP_INLINE_VISIBILITY
const_iterator begin() const _NOEXCEPT
{return const_iterator(__get_pointer());}
_LIBCPP_INLINE_VISIBILITY
iterator end() _NOEXCEPT
{return iterator(__get_pointer() + size());}
_LIBCPP_INLINE_VISIBILITY
const_iterator end() const _NOEXCEPT
{return const_iterator(__get_pointer() + size());}
#endif // _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_INLINE_VISIBILITY
reverse_iterator rbegin() _NOEXCEPT
{return reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY
const_reverse_iterator rbegin() const _NOEXCEPT
{return const_reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY
reverse_iterator rend() _NOEXCEPT
{return reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY
const_reverse_iterator rend() const _NOEXCEPT
{return const_reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY
const_iterator cbegin() const _NOEXCEPT
{return begin();}
_LIBCPP_INLINE_VISIBILITY
const_iterator cend() const _NOEXCEPT
{return end();}
_LIBCPP_INLINE_VISIBILITY
const_reverse_iterator crbegin() const _NOEXCEPT
{return rbegin();}
_LIBCPP_INLINE_VISIBILITY
const_reverse_iterator crend() const _NOEXCEPT
{return rend();}
_LIBCPP_INLINE_VISIBILITY size_type size() const _NOEXCEPT
{return __is_long() ? __get_long_size() : __get_short_size();}
_LIBCPP_INLINE_VISIBILITY size_type length() const _NOEXCEPT {return size();}
_LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY size_type capacity() const _NOEXCEPT
{return (__is_long() ? __get_long_cap() : __min_cap) - 1;}
void resize(size_type __n, value_type __c);
_LIBCPP_INLINE_VISIBILITY void resize(size_type __n) {resize(__n, value_type());}
void reserve(size_type res_arg = 0);
_LIBCPP_INLINE_VISIBILITY
void shrink_to_fit() _NOEXCEPT {reserve();}
_LIBCPP_INLINE_VISIBILITY
void clear() _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY bool empty() const _NOEXCEPT {return size() == 0;}
_LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __pos) const;
_LIBCPP_INLINE_VISIBILITY reference operator[](size_type __pos);
const_reference at(size_type __n) const;
reference at(size_type __n);
_LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const basic_string& __str) {return append(__str);}
_LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s) {return append(__s);}
_LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c) {push_back(__c); return *this;}
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& append(const basic_string& __str);
basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos);
basic_string& append(const value_type* __s, size_type __n);
basic_string& append(const value_type* __s);
basic_string& append(size_type __n, value_type __c);
template<class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
basic_string&
>::type
append(_InputIterator __first, _InputIterator __last);
template<class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
basic_string&
>::type
append(_ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
void push_back(value_type __c);
_LIBCPP_INLINE_VISIBILITY
void pop_back();
_LIBCPP_INLINE_VISIBILITY reference front();
_LIBCPP_INLINE_VISIBILITY const_reference front() const;
_LIBCPP_INLINE_VISIBILITY reference back();
_LIBCPP_INLINE_VISIBILITY const_reference back() const;
_LIBCPP_INLINE_VISIBILITY
basic_string& assign(const basic_string& __str);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY
basic_string& assign(basic_string&& str)
{*this = _VSTD::move(str); return *this;}
#endif
basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos);
basic_string& assign(const value_type* __s, size_type __n);
basic_string& assign(const value_type* __s);
basic_string& assign(size_type __n, value_type __c);
template<class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
basic_string&
>::type
assign(_InputIterator __first, _InputIterator __last);
template<class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
basic_string&
>::type
assign(_ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& insert(size_type __pos1, const basic_string& __str);
basic_string& insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n=npos);
basic_string& insert(size_type __pos, const value_type* __s, size_type __n);
basic_string& insert(size_type __pos, const value_type* __s);
basic_string& insert(size_type __pos, size_type __n, value_type __c);
iterator insert(const_iterator __pos, value_type __c);
_LIBCPP_INLINE_VISIBILITY
iterator insert(const_iterator __pos, size_type __n, value_type __c);
template<class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
iterator
>::type
insert(const_iterator __pos, _InputIterator __first, _InputIterator __last);
template<class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
iterator
>::type
insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
iterator insert(const_iterator __pos, initializer_list<value_type> __il)
{return insert(__pos, __il.begin(), __il.end());}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
basic_string& erase(size_type __pos = 0, size_type __n = npos);
_LIBCPP_INLINE_VISIBILITY
iterator erase(const_iterator __pos);
_LIBCPP_INLINE_VISIBILITY
iterator erase(const_iterator __first, const_iterator __last);
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str);
basic_string& replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos);
basic_string& replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2);
basic_string& replace(size_type __pos, size_type __n1, const value_type* __s);
basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c);
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(const_iterator __i1, const_iterator __i2, const basic_string& __str);
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n);
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(const_iterator __i1, const_iterator __i2, const value_type* __s);
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c);
template<class _InputIterator>
typename enable_if
<
__is_input_iterator<_InputIterator>::value,
basic_string&
>::type
replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
_LIBCPP_INLINE_VISIBILITY
basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
{return replace(__i1, __i2, __il.begin(), __il.end());}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
_LIBCPP_INLINE_VISIBILITY
basic_string substr(size_type __pos = 0, size_type __n = npos) const;
_LIBCPP_INLINE_VISIBILITY
void swap(basic_string& __str)
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value);
_LIBCPP_INLINE_VISIBILITY
const value_type* c_str() const _NOEXCEPT {return data();}
_LIBCPP_INLINE_VISIBILITY
const value_type* data() const _NOEXCEPT {return _VSTD::__to_raw_pointer(__get_pointer());}
_LIBCPP_INLINE_VISIBILITY
allocator_type get_allocator() const _NOEXCEPT {return __alloc();}
_LIBCPP_INLINE_VISIBILITY
size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
int compare(const basic_string& __str) const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY
int compare(size_type __pos1, size_type __n1, const basic_string& __str) const;
int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2=npos) const;
int compare(const value_type* __s) const _NOEXCEPT;
int compare(size_type __pos1, size_type __n1, const value_type* __s) const;
int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const;
_LIBCPP_INLINE_VISIBILITY bool __invariants() const;
_LIBCPP_INLINE_VISIBILITY
bool __is_long() const _NOEXCEPT
{return bool(__r_.first().__s.__size_ & __short_mask);}
#if _LIBCPP_DEBUG_LEVEL >= 2
bool __dereferenceable(const const_iterator* __i) const;
bool __decrementable(const const_iterator* __i) const;
bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;
#endif // _LIBCPP_DEBUG_LEVEL >= 2
private:
_LIBCPP_INLINE_VISIBILITY
allocator_type& __alloc() _NOEXCEPT
{return __r_.second();}
_LIBCPP_INLINE_VISIBILITY
const allocator_type& __alloc() const _NOEXCEPT
{return __r_.second();}
#ifdef _LIBCPP_ALTERNATE_STRING_LAYOUT
_LIBCPP_INLINE_VISIBILITY
void __set_short_size(size_type __s) _NOEXCEPT
# if _LIBCPP_BIG_ENDIAN
{__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
# else
{__r_.first().__s.__size_ = (unsigned char)(__s);}
# endif
_LIBCPP_INLINE_VISIBILITY
size_type __get_short_size() const _NOEXCEPT
# if _LIBCPP_BIG_ENDIAN
{return __r_.first().__s.__size_ >> 1;}
# else
{return __r_.first().__s.__size_;}
# endif
#else // _LIBCPP_ALTERNATE_STRING_LAYOUT
_LIBCPP_INLINE_VISIBILITY
void __set_short_size(size_type __s) _NOEXCEPT
# if _LIBCPP_BIG_ENDIAN
{__r_.first().__s.__size_ = (unsigned char)(__s);}
# else
{__r_.first().__s.__size_ = (unsigned char)(__s << 1);}
# endif
_LIBCPP_INLINE_VISIBILITY
size_type __get_short_size() const _NOEXCEPT
# if _LIBCPP_BIG_ENDIAN
{return __r_.first().__s.__size_;}
# else
{return __r_.first().__s.__size_ >> 1;}
# endif
#endif // _LIBCPP_ALTERNATE_STRING_LAYOUT
_LIBCPP_INLINE_VISIBILITY
void __set_long_size(size_type __s) _NOEXCEPT
{__r_.first().__l.__size_ = __s;}
_LIBCPP_INLINE_VISIBILITY
size_type __get_long_size() const _NOEXCEPT
{return __r_.first().__l.__size_;}
_LIBCPP_INLINE_VISIBILITY
void __set_size(size_type __s) _NOEXCEPT
{if (__is_long()) __set_long_size(__s); else __set_short_size(__s);}
_LIBCPP_INLINE_VISIBILITY
void __set_long_cap(size_type __s) _NOEXCEPT
{__r_.first().__l.__cap_ = __long_mask | __s;}
_LIBCPP_INLINE_VISIBILITY
size_type __get_long_cap() const _NOEXCEPT
{return __r_.first().__l.__cap_ & size_type(~__long_mask);}
_LIBCPP_INLINE_VISIBILITY
void __set_long_pointer(pointer __p) _NOEXCEPT
{__r_.first().__l.__data_ = __p;}
_LIBCPP_INLINE_VISIBILITY
pointer __get_long_pointer() _NOEXCEPT
{return __r_.first().__l.__data_;}
_LIBCPP_INLINE_VISIBILITY
const_pointer __get_long_pointer() const _NOEXCEPT
{return __r_.first().__l.__data_;}
_LIBCPP_INLINE_VISIBILITY
pointer __get_short_pointer() _NOEXCEPT
{return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);}
_LIBCPP_INLINE_VISIBILITY
const_pointer __get_short_pointer() const _NOEXCEPT
{return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);}
_LIBCPP_INLINE_VISIBILITY
pointer __get_pointer() _NOEXCEPT
{return __is_long() ? __get_long_pointer() : __get_short_pointer();}
_LIBCPP_INLINE_VISIBILITY
const_pointer __get_pointer() const _NOEXCEPT
{return __is_long() ? __get_long_pointer() : __get_short_pointer();}
_LIBCPP_INLINE_VISIBILITY
void __zero() _NOEXCEPT
{
size_type (&__a)[__n_words] = __r_.first().__r.__words;
for (unsigned __i = 0; __i < __n_words; ++__i)
__a[__i] = 0;
}
template <size_type __a> static
_LIBCPP_INLINE_VISIBILITY
size_type __align_it(size_type __s) _NOEXCEPT
{return __s + (__a-1) & ~(__a-1);}
enum {__alignment = 16};
static _LIBCPP_INLINE_VISIBILITY
size_type __recommend(size_type __s) _NOEXCEPT
{return (__s < __min_cap ? __min_cap :
__align_it<sizeof(value_type) < __alignment ?
__alignment/sizeof(value_type) : 1 > (__s+1)) - 1;}
void __init(const value_type* __s, size_type __sz, size_type __reserve);
void __init(const value_type* __s, size_type __sz);
void __init(size_type __n, value_type __c);
template <class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
void
>::type
__init(_InputIterator __first, _InputIterator __last);
template <class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
void
>::type
__init(_ForwardIterator __first, _ForwardIterator __last);
void __grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
size_type __n_copy, size_type __n_del, size_type __n_add = 0);
void __grow_by_and_replace(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
size_type __n_copy, size_type __n_del,
size_type __n_add, const value_type* __p_new_stuff);
_LIBCPP_INLINE_VISIBILITY
void __erase_to_end(size_type __pos);
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const basic_string& __str)
{__copy_assign_alloc(__str, integral_constant<bool,
__alloc_traits::propagate_on_container_copy_assignment::value>());}
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const basic_string& __str, true_type)
{
if (__alloc() != __str.__alloc())
{
clear();
shrink_to_fit();
}
__alloc() = __str.__alloc();
}
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT
{}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY
void __move_assign(basic_string& __str, false_type);
_LIBCPP_INLINE_VISIBILITY
void __move_assign(basic_string& __str, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
#endif
_LIBCPP_INLINE_VISIBILITY
void
__move_assign_alloc(basic_string& __str)
_NOEXCEPT_(
!__alloc_traits::propagate_on_container_move_assignment::value ||
is_nothrow_move_assignable<allocator_type>::value)
{__move_assign_alloc(__str, integral_constant<bool,
__alloc_traits::propagate_on_container_move_assignment::value>());}
_LIBCPP_INLINE_VISIBILITY
void __move_assign_alloc(basic_string& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
{
__alloc() = _VSTD::move(__c.__alloc());
}
_LIBCPP_INLINE_VISIBILITY
void __move_assign_alloc(basic_string&, false_type)
_NOEXCEPT
{}
_LIBCPP_INLINE_VISIBILITY
static void __swap_alloc(allocator_type& __x, allocator_type& __y)
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value)
{__swap_alloc(__x, __y, integral_constant<bool,
__alloc_traits::propagate_on_container_swap::value>());}
_LIBCPP_INLINE_VISIBILITY
static void __swap_alloc(allocator_type& __x, allocator_type& __y, true_type)
_NOEXCEPT_(__is_nothrow_swappable<allocator_type>::value)
{
using _VSTD::swap;
swap(__x, __y);
}
_LIBCPP_INLINE_VISIBILITY
static void __swap_alloc(allocator_type&, allocator_type&, false_type) _NOEXCEPT
{}
_LIBCPP_INLINE_VISIBILITY void __invalidate_all_iterators();
_LIBCPP_INLINE_VISIBILITY void __invalidate_iterators_past(size_type);
friend basic_string operator+<>(const basic_string&, const basic_string&);
friend basic_string operator+<>(const value_type*, const basic_string&);
friend basic_string operator+<>(value_type, const basic_string&);
friend basic_string operator+<>(const basic_string&, const value_type*);
friend basic_string operator+<>(const basic_string&, value_type);
};
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_string<_CharT, _Traits, _Allocator>::__invalidate_all_iterators()
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__invalidate_all(this);
#endif // _LIBCPP_DEBUG_LEVEL >= 2
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type
#if _LIBCPP_DEBUG_LEVEL >= 2
__pos
#endif
)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__c_node* __c = __get_db()->__find_c_and_lock(this);
if (__c)
{
const_pointer __new_last = __get_pointer() + __pos;
for (__i_node** __p = __c->end_; __p != __c->beg_; )
{
--__p;
const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
if (__i->base() > __new_last)
{
(*__p)->__c_ = nullptr;
if (--__c->end_ != __p)
memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
}
}
__get_db()->unlock();
}
#endif // _LIBCPP_DEBUG_LEVEL >= 2
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string()
_NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
__zero();
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a)
: __r_(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
__zero();
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz, size_type __reserve)
{
if (__reserve > max_size())
this->__throw_length_error();
pointer __p;
if (__reserve < __min_cap)
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
size_type __cap = __recommend(__reserve);
__p = __alloc_traits::allocate(__alloc(), __cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
__set_long_size(__sz);
}
traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
traits_type::assign(__p[__sz], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz)
{
if (__sz > max_size())
this->__throw_length_error();
pointer __p;
if (__sz < __min_cap)
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
size_type __cap = __recommend(__sz);
__p = __alloc_traits::allocate(__alloc(), __cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
__set_long_size(__sz);
}
traits_type::copy(_VSTD::__to_raw_pointer(__p), __s, __sz);
traits_type::assign(__p[__sz], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr");
__init(__s, traits_type::length(__s));
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(const value_type* __s, const allocator_type& __a)
: __r_(__a)
{
_LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
__init(__s, traits_type::length(__s));
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(const value_type* __s, size_type __n)
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
__init(__s, __n);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(const value_type* __s, size_type __n, const allocator_type& __a)
: __r_(__a)
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
__init(__s, __n);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str)
: __r_(__alloc_traits::select_on_container_copy_construction(__str.__alloc()))
{
if (!__str.__is_long())
__r_.first().__r = __str.__r_.first().__r;
else
__init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, const allocator_type& __a)
: __r_(__a)
{
if (!__str.__is_long())
__r_.first().__r = __str.__r_.first().__r;
else
__init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str)
_NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
: __r_(_VSTD::move(__str.__r_))
{
__str.__zero();
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
if (__is_long())
__get_db()->swap(this, &__str);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a)
: __r_(__a)
{
if (__str.__is_long() && __a != __str.__alloc()) // copy, not move
__init(_VSTD::__to_raw_pointer(__str.__get_long_pointer()), __str.__get_long_size());
else
{
__r_.first().__r = __str.__r_.first().__r;
__str.__zero();
}
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
if (__is_long())
__get_db()->swap(this, &__str);
#endif
}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c)
{
if (__n > max_size())
this->__throw_length_error();
pointer __p;
if (__n < __min_cap)
{
__set_short_size(__n);
__p = __get_short_pointer();
}
else
{
size_type __cap = __recommend(__n);
__p = __alloc_traits::allocate(__alloc(), __cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
__set_long_size(__n);
}
traits_type::assign(_VSTD::__to_raw_pointer(__p), __n, __c);
traits_type::assign(__p[__n], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, value_type __c)
{
__init(__n, __c);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, value_type __c, const allocator_type& __a)
: __r_(__a)
{
__init(__n, __c);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos, size_type __n,
const allocator_type& __a)
: __r_(__a)
{
size_type __str_sz = __str.size();
if (__pos > __str_sz)
this->__throw_out_of_range();
__init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos));
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
void
>::type
basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last)
{
__zero();
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
for (; __first != __last; ++__first)
push_back(*__first);
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
if (__is_long())
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
}
template <class _CharT, class _Traits, class _Allocator>
template <class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
void
>::type
basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last)
{
size_type __sz = static_cast<size_type>(_VSTD::distance(__first, __last));
if (__sz > max_size())
this->__throw_length_error();
pointer __p;
if (__sz < __min_cap)
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
size_type __cap = __recommend(__sz);
__p = __alloc_traits::allocate(__alloc(), __cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
__set_long_size(__sz);
}
for (; __first != __last; ++__first, ++__p)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
}
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last)
{
__init(__first, __last);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last,
const allocator_type& __a)
: __r_(__a)
{
__init(__first, __last);
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(initializer_list<value_type> __il)
{
__init(__il.begin(), __il.end());
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>::basic_string(initializer_list<value_type> __il, const allocator_type& __a)
: __r_(__a)
{
__init(__il.begin(), __il.end());
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_c(this);
#endif
}
#endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>::~basic_string()
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__erase_c(this);
#endif
if (__is_long())
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::__grow_by_and_replace
(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
size_type __n_copy, size_type __n_del, size_type __n_add, const value_type* __p_new_stuff)
{
size_type __ms = max_size();
if (__delta_cap > __ms - __old_cap - 1)
this->__throw_length_error();
pointer __old_p = __get_pointer();
size_type __cap = __old_cap < __ms / 2 - __alignment ?
__recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
__ms - 1;
pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
__invalidate_all_iterators();
if (__n_copy != 0)
traits_type::copy(_VSTD::__to_raw_pointer(__p),
_VSTD::__to_raw_pointer(__old_p), __n_copy);
if (__n_add != 0)
traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy, __p_new_stuff, __n_add);
size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
if (__sec_cp_sz != 0)
traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
_VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del, __sec_cp_sz);
if (__old_cap+1 != __min_cap)
__alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
__old_sz = __n_copy + __n_add + __sec_cp_sz;
__set_long_size(__old_sz);
traits_type::assign(__p[__old_sz], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::__grow_by(size_type __old_cap, size_type __delta_cap, size_type __old_sz,
size_type __n_copy, size_type __n_del, size_type __n_add)
{
size_type __ms = max_size();
if (__delta_cap > __ms - __old_cap)
this->__throw_length_error();
pointer __old_p = __get_pointer();
size_type __cap = __old_cap < __ms / 2 - __alignment ?
__recommend(_VSTD::max(__old_cap + __delta_cap, 2 * __old_cap)) :
__ms - 1;
pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
__invalidate_all_iterators();
if (__n_copy != 0)
traits_type::copy(_VSTD::__to_raw_pointer(__p),
_VSTD::__to_raw_pointer(__old_p), __n_copy);
size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
if (__sec_cp_sz != 0)
traits_type::copy(_VSTD::__to_raw_pointer(__p) + __n_copy + __n_add,
_VSTD::__to_raw_pointer(__old_p) + __n_copy + __n_del,
__sec_cp_sz);
if (__old_cap+1 != __min_cap)
__alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
__set_long_pointer(__p);
__set_long_cap(__cap+1);
}
// assign
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s, size_type __n)
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::assign received nullptr");
size_type __cap = capacity();
if (__cap >= __n)
{
value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
traits_type::move(__p, __s, __n);
traits_type::assign(__p[__n], value_type());
__set_size(__n);
__invalidate_iterators_past(__n);
}
else
{
size_type __sz = size();
__grow_by_and_replace(__cap, __n - __cap, __sz, 0, __sz, __n, __s);
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(size_type __n, value_type __c)
{
size_type __cap = capacity();
if (__cap < __n)
{
size_type __sz = size();
__grow_by(__cap, __n - __cap, __sz, 0, __sz);
}
else
__invalidate_iterators_past(__n);
value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
traits_type::assign(__p, __n, __c);
traits_type::assign(__p[__n], value_type());
__set_size(__n);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::operator=(value_type __c)
{
pointer __p;
if (__is_long())
{
__p = __get_long_pointer();
__set_long_size(1);
}
else
{
__p = __get_short_pointer();
__set_short_size(1);
}
traits_type::assign(*__p, __c);
traits_type::assign(*++__p, value_type());
__invalidate_iterators_past(1);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str)
{
if (this != &__str)
{
__copy_assign_alloc(__str);
assign(__str);
}
return *this;
}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type)
{
if (__alloc() != __str.__alloc())
assign(__str);
else
__move_assign(__str, true_type());
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
{
clear();
shrink_to_fit();
__r_.first() = __str.__r_.first();
__move_assign_alloc(__str);
__str.__zero();
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::operator=(basic_string&& __str)
_NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value)
{
__move_assign(__str, integral_constant<bool,
__alloc_traits::propagate_on_container_move_assignment::value>());
return *this;
}
#endif
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator>
typename enable_if
<
__is_input_iterator <_InputIterator>::value &&
!__is_forward_iterator<_InputIterator>::value,
basic_string<_CharT, _Traits, _Allocator>&
>::type
basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last)
{
clear();
for (; __first != __last; ++__first)
push_back(*__first);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
template<class _ForwardIterator>
typename enable_if
<
__is_forward_iterator<_ForwardIterator>::value,
basic_string<_CharT, _Traits, _Allocator>&
>::type
basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last)
{
size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
size_type __cap = capacity();
if (__cap < __n)
{
size_type __sz = size();
__grow_by(__cap, __n - __cap, __sz, 0, __sz);
}
else
__invalidate_iterators_past(__n);
pointer __p = __get_pointer();
for (; __first != __last; ++__first, ++__p)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
__set_size(__n);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str)
{
return assign(__str.data(), __str.size());
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const basic_string& __str, size_type __pos, size_type __n)
{
size_type __sz = __str.size();
if (__pos > __sz)
this->__throw_out_of_range();
return assign(__str.data() + __pos, _VSTD::min(__n, __sz - __pos));
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr");
return assign(__s, traits_type::length(__s));
}
// append
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s, size_type __n)
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::append received nullptr");
size_type __cap = capacity();
size_type __sz = size();
if (__cap - __sz >= __n)
{
if (__n)
{
value_type* __p = _VSTD::__to_raw_pointer(__get_pointer());
traits_type::copy(__p + __sz, __s, __n);
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
}
}
else
__grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __sz, 0, __n, __s);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(size_type __n, value_type __c)
{
if (__n)
{
size_type __cap = capacity();
size_type __sz = size();
if (__cap - __sz < __n)
__grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
pointer __p = __get_pointer();
traits_type::assign(_VSTD::__to_raw_pointer(__p) + __sz, __n, __c);
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
void
basic_string<_CharT, _Traits, _Allocator>::push_back(value_type __c)
{
bool __is_short = !__is_long();
size_type __cap;
size_type __sz;
if (__is_short)
{
__cap = __min_cap - 1;
__sz = __get_short_size();
}
else
{
__cap = __get_long_cap() - 1;
__sz = __get_long_size();
}
if (__sz == __cap)
{
__grow_by(__cap, 1, __sz, __sz, 0);
__is_short = !__is_long();
}
pointer __p;
if (__is_short)
{
__p = __get_short_pointer() + __sz;
__set_short_size(__sz+1);
}
else
{
__p = __get_long_pointer() + __sz;
__set_long_size(__sz+1);
}
traits_type::assign(*__p, __c);
traits_type::assign(*++__p, value_type());
}