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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_STRING
#define _LIBCPP_STRING
/*
string synopsis
#include <compare>
#include <initializer_list>
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
{
using char_type = charT;
using int_type = ...;
using off_type = streamoff;
using pos_type = streampos;
using state_type = mbstate_t;
using comparison_category = strong_ordering; // Since C++20 only for the specializations
// char, wchar_t, char8_t, char16_t, and char32_t.
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 <> struct char_traits<char8_t>; // C++20
template <> struct char_traits<char16_t>;
template <> struct char_traits<char32_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); // constexpr since C++20
explicit basic_string(const allocator_type& a); // constexpr since C++20
basic_string(const basic_string& str); // constexpr since C++20
basic_string(basic_string&& str)
noexcept(is_nothrow_move_constructible<allocator_type>::value); // constexpr since C++20
basic_string(const basic_string& str, size_type pos,
const allocator_type& a = allocator_type()); // constexpr since C++20
basic_string(const basic_string& str, size_type pos, size_type n,
const Allocator& a = Allocator()); // constexpr since C++20
constexpr basic_string(
basic_string&& str, size_type pos, const Allocator& a = Allocator()); // since C++23
constexpr basic_string(
basic_string&& str, size_type pos, size_type n, const Allocator& a = Allocator()); // since C++23
template<class T>
basic_string(const T& t, size_type pos, size_type n, const Allocator& a = Allocator()); // C++17, constexpr since C++20
template <class T>
explicit basic_string(const T& t, const Allocator& a = Allocator()); // C++17, constexpr since C++20
basic_string(const value_type* s, const allocator_type& a = allocator_type()); // constexpr since C++20
basic_string(const value_type* s, size_type n, const allocator_type& a = allocator_type()); // constexpr since C++20
basic_string(nullptr_t) = delete; // C++2b
basic_string(size_type n, value_type c, const allocator_type& a = allocator_type()); // constexpr since C++20
template<class InputIterator>
basic_string(InputIterator begin, InputIterator end,
const allocator_type& a = allocator_type()); // constexpr since C++20
basic_string(initializer_list<value_type>, const Allocator& = Allocator()); // constexpr since C++20
basic_string(const basic_string&, const Allocator&); // constexpr since C++20
basic_string(basic_string&&, const Allocator&); // constexpr since C++20
~basic_string(); // constexpr since C++20
operator basic_string_view<charT, traits>() const noexcept; // constexpr since C++20
basic_string& operator=(const basic_string& str); // constexpr since C++20
template <class T>
basic_string& operator=(const T& t); // C++17, constexpr since C++20
basic_string& operator=(basic_string&& str)
noexcept(
allocator_type::propagate_on_container_move_assignment::value ||
allocator_type::is_always_equal::value ); // C++17, constexpr since C++20
basic_string& operator=(const value_type* s); // constexpr since C++20
basic_string& operator=(nullptr_t) = delete; // C++2b
basic_string& operator=(value_type c); // constexpr since C++20
basic_string& operator=(initializer_list<value_type>); // constexpr since C++20
iterator begin() noexcept; // constexpr since C++20
const_iterator begin() const noexcept; // constexpr since C++20
iterator end() noexcept; // constexpr since C++20
const_iterator end() const noexcept; // constexpr since C++20
reverse_iterator rbegin() noexcept; // constexpr since C++20
const_reverse_iterator rbegin() const noexcept; // constexpr since C++20
reverse_iterator rend() noexcept; // constexpr since C++20
const_reverse_iterator rend() const noexcept; // constexpr since C++20
const_iterator cbegin() const noexcept; // constexpr since C++20
const_iterator cend() const noexcept; // constexpr since C++20
const_reverse_iterator crbegin() const noexcept; // constexpr since C++20
const_reverse_iterator crend() const noexcept; // constexpr since C++20
size_type size() const noexcept; // constexpr since C++20
size_type length() const noexcept; // constexpr since C++20
size_type max_size() const noexcept; // constexpr since C++20
size_type capacity() const noexcept; // constexpr since C++20
void resize(size_type n, value_type c); // constexpr since C++20
void resize(size_type n); // constexpr since C++20
template<class Operation>
constexpr void resize_and_overwrite(size_type n, Operation op); // since C++23
void reserve(size_type res_arg); // constexpr since C++20
void reserve(); // deprecated in C++20
void shrink_to_fit(); // constexpr since C++20
void clear() noexcept; // constexpr since C++20
bool empty() const noexcept; // constexpr since C++20
const_reference operator[](size_type pos) const; // constexpr since C++20
reference operator[](size_type pos); // constexpr since C++20
const_reference at(size_type n) const; // constexpr since C++20
reference at(size_type n); // constexpr since C++20
basic_string& operator+=(const basic_string& str); // constexpr since C++20
template <class T>
basic_string& operator+=(const T& t); // C++17, constexpr since C++20
basic_string& operator+=(const value_type* s); // constexpr since C++20
basic_string& operator+=(value_type c); // constexpr since C++20
basic_string& operator+=(initializer_list<value_type>); // constexpr since C++20
basic_string& append(const basic_string& str); // constexpr since C++20
template <class T>
basic_string& append(const T& t); // C++17, constexpr since C++20
basic_string& append(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20
template <class T>
basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20
basic_string& append(const value_type* s, size_type n); // constexpr since C++20
basic_string& append(const value_type* s); // constexpr since C++20
basic_string& append(size_type n, value_type c); // constexpr since C++20
template<class InputIterator>
basic_string& append(InputIterator first, InputIterator last); // constexpr since C++20
basic_string& append(initializer_list<value_type>); // constexpr since C++20
void push_back(value_type c); // constexpr since C++20
void pop_back(); // constexpr since C++20
reference front(); // constexpr since C++20
const_reference front() const; // constexpr since C++20
reference back(); // constexpr since C++20
const_reference back() const; // constexpr since C++20
basic_string& assign(const basic_string& str); // constexpr since C++20
template <class T>
basic_string& assign(const T& t); // C++17, constexpr since C++20
basic_string& assign(basic_string&& str); // constexpr since C++20
basic_string& assign(const basic_string& str, size_type pos, size_type n=npos); // C++14, constexpr since C++20
template <class T>
basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20
basic_string& assign(const value_type* s, size_type n); // constexpr since C++20
basic_string& assign(const value_type* s); // constexpr since C++20
basic_string& assign(size_type n, value_type c); // constexpr since C++20
template<class InputIterator>
basic_string& assign(InputIterator first, InputIterator last); // constexpr since C++20
basic_string& assign(initializer_list<value_type>); // constexpr since C++20
basic_string& insert(size_type pos1, const basic_string& str); // constexpr since C++20
template <class T>
basic_string& insert(size_type pos1, const T& t); // constexpr since C++20
basic_string& insert(size_type pos1, const basic_string& str,
size_type pos2, size_type n); // constexpr since C++20
template <class T>
basic_string& insert(size_type pos1, const T& t, size_type pos2, size_type n); // C++17, constexpr since C++20
basic_string& insert(size_type pos, const value_type* s, size_type n=npos); // C++14, constexpr since C++20
basic_string& insert(size_type pos, const value_type* s); // constexpr since C++20
basic_string& insert(size_type pos, size_type n, value_type c); // constexpr since C++20
iterator insert(const_iterator p, value_type c); // constexpr since C++20
iterator insert(const_iterator p, size_type n, value_type c); // constexpr since C++20
template<class InputIterator>
iterator insert(const_iterator p, InputIterator first, InputIterator last); // constexpr since C++20
iterator insert(const_iterator p, initializer_list<value_type>); // constexpr since C++20
basic_string& erase(size_type pos = 0, size_type n = npos); // constexpr since C++20
iterator erase(const_iterator position); // constexpr since C++20
iterator erase(const_iterator first, const_iterator last); // constexpr since C++20
basic_string& replace(size_type pos1, size_type n1, const basic_string& str); // constexpr since C++20
template <class T>
basic_string& replace(size_type pos1, size_type n1, const T& t); // C++17, constexpr since C++20
basic_string& replace(size_type pos1, size_type n1, const basic_string& str,
size_type pos2, size_type n2=npos); // C++14, constexpr since C++20
template <class T>
basic_string& replace(size_type pos1, size_type n1, const T& t,
size_type pos2, size_type n); // C++17, constexpr since C++20
basic_string& replace(size_type pos, size_type n1, const value_type* s, size_type n2); // constexpr since C++20
basic_string& replace(size_type pos, size_type n1, const value_type* s); // constexpr since C++20
basic_string& replace(size_type pos, size_type n1, size_type n2, value_type c); // constexpr since C++20
basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str); // constexpr since C++20
template <class T>
basic_string& replace(const_iterator i1, const_iterator i2, const T& t); // C++17, constexpr since C++20
basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s, size_type n); // constexpr since C++20
basic_string& replace(const_iterator i1, const_iterator i2, const value_type* s); // constexpr since C++20
basic_string& replace(const_iterator i1, const_iterator i2, size_type n, value_type c); // constexpr since C++20
template<class InputIterator>
basic_string& replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); // constexpr since C++20
basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<value_type>); // constexpr since C++20
size_type copy(value_type* s, size_type n, size_type pos = 0) const; // constexpr since C++20
basic_string substr(size_type pos = 0, size_type n = npos) const; // constexpr in C++20, removed in C++23
basic_string substr(size_type pos = 0, size_type n = npos) const&; // since C++23
constexpr basic_string substr(size_type pos = 0, size_type n = npos) &&; // since C++23
void swap(basic_string& str)
noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value ||
allocator_traits<allocator_type>::is_always_equal::value); // C++17, constexpr since C++20
const value_type* c_str() const noexcept; // constexpr since C++20
const value_type* data() const noexcept; // constexpr since C++20
value_type* data() noexcept; // C++17, constexpr since C++20
allocator_type get_allocator() const noexcept; // constexpr since C++20
size_type find(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20
template <class T>
size_type find(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type find(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type find(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20
size_type find(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20
size_type rfind(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20
template <class T>
size_type rfind(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type rfind(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type rfind(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20
size_type rfind(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20
size_type find_first_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20
template <class T>
size_type find_first_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type find_first_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type find_first_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20
size_type find_first_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20
size_type find_last_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20
template <class T>
size_type find_last_of(const T& t, size_type pos = npos) const noexcept noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type find_last_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type find_last_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20
size_type find_last_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20
size_type find_first_not_of(const basic_string& str, size_type pos = 0) const noexcept; // constexpr since C++20
template <class T>
size_type find_first_not_of(const T& t, size_type pos = 0) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type find_first_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type find_first_not_of(const value_type* s, size_type pos = 0) const noexcept; // constexpr since C++20
size_type find_first_not_of(value_type c, size_type pos = 0) const noexcept; // constexpr since C++20
size_type find_last_not_of(const basic_string& str, size_type pos = npos) const noexcept; // constexpr since C++20
template <class T>
size_type find_last_not_of(const T& t, size_type pos = npos) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
size_type find_last_not_of(const value_type* s, size_type pos, size_type n) const noexcept; // constexpr since C++20
size_type find_last_not_of(const value_type* s, size_type pos = npos) const noexcept; // constexpr since C++20
size_type find_last_not_of(value_type c, size_type pos = npos) const noexcept; // constexpr since C++20
int compare(const basic_string& str) const noexcept; // constexpr since C++20
template <class T>
int compare(const T& t) const noexcept; // C++17, noexcept as an extension, constexpr since C++20
int compare(size_type pos1, size_type n1, const basic_string& str) const; // constexpr since C++20
template <class T>
int compare(size_type pos1, size_type n1, const T& t) const; // C++17, constexpr since C++20
int compare(size_type pos1, size_type n1, const basic_string& str,
size_type pos2, size_type n2=npos) const; // C++14, constexpr since C++20
template <class T>
int compare(size_type pos1, size_type n1, const T& t,
size_type pos2, size_type n2=npos) const; // C++17, constexpr since C++20
int compare(const value_type* s) const noexcept; // constexpr since C++20
int compare(size_type pos1, size_type n1, const value_type* s) const; // constexpr since C++20
int compare(size_type pos1, size_type n1, const value_type* s, size_type n2) const; // constexpr since C++20
constexpr bool starts_with(basic_string_view<charT, traits> sv) const noexcept; // C++20
constexpr bool starts_with(charT c) const noexcept; // C++20
constexpr bool starts_with(const charT* s) const; // C++20
constexpr bool ends_with(basic_string_view<charT, traits> sv) const noexcept; // C++20
constexpr bool ends_with(charT c) const noexcept; // C++20
constexpr bool ends_with(const charT* s) const; // C++20
constexpr bool contains(basic_string_view<charT, traits> sv) const noexcept; // C++2b
constexpr bool contains(charT c) const noexcept; // C++2b
constexpr bool contains(const charT* s) const; // C++2b
};
template<class InputIterator,
class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
basic_string(InputIterator, InputIterator, Allocator = Allocator())
-> basic_string<typename iterator_traits<InputIterator>::value_type,
char_traits<typename iterator_traits<InputIterator>::value_type>,
Allocator>; // C++17
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); // constexpr since C++20
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const charT* lhs , const basic_string<charT,traits,Allocator>&rhs); // constexpr since C++20
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs); // constexpr since C++20
template<class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs, charT rhs); // constexpr since C++20
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // constexpr since C++20
template<class charT, class traits, class Allocator>
bool operator==(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs) noexcept; // constexpr since C++20
template<class charT, class traits, class Allocator>
bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator!=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator!=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator< (const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator< (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator< (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator> (const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator> (const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator> (const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator<=(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator<=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator<=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator>=(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator>=(const basic_string<charT, traits, Allocator>& lhs, const charT* rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator>
bool operator>=(const charT* lhs, const basic_string<charT, traits, Allocator>& rhs) noexcept; // removed in C++20
template<class charT, class traits, class Allocator> // since C++20
constexpr see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
const basic_string<charT, traits, Allocator>& rhs) noexcept;
template<class charT, class traits, class Allocator> // since C++20
constexpr see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
const charT* 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))); // constexpr since C++20
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);
template<class charT, class traits, class Allocator, class U>
typename basic_string<charT, traits, Allocator>::size_type
erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20
template<class charT, class traits, class Allocator, class Predicate>
typename basic_string<charT, traits, Allocator>::size_type
erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20
typedef basic_string<char> string;
typedef basic_string<wchar_t> wstring;
typedef basic_string<char8_t> u8string; // C++20
typedef basic_string<char16_t> u16string;
typedef basic_string<char32_t> u32string;
int stoi (const string& str, size_t* idx = nullptr, int base = 10);
long stol (const string& str, size_t* idx = nullptr, int base = 10);
unsigned long stoul (const string& str, size_t* idx = nullptr, int base = 10);
long long stoll (const string& str, size_t* idx = nullptr, int base = 10);
unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10);
float stof (const string& str, size_t* idx = nullptr);
double stod (const string& str, size_t* idx = nullptr);
long double stold(const string& str, size_t* idx = nullptr);
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 = nullptr, int base = 10);
long stol (const wstring& str, size_t* idx = nullptr, int base = 10);
unsigned long stoul (const wstring& str, size_t* idx = nullptr, int base = 10);
long long stoll (const wstring& str, size_t* idx = nullptr, int base = 10);
unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10);
float stof (const wstring& str, size_t* idx = nullptr);
double stod (const wstring& str, size_t* idx = nullptr);
long double stold(const wstring& str, size_t* idx = nullptr);
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<u8string>; // C++20
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, constexpr since C++20
basic_string<wchar_t> operator "" s( const wchar_t *str, size_t len ); // C++14, constexpr since C++20
constexpr basic_string<char8_t> operator "" s( const char8_t *str, size_t len ); // C++20
basic_string<char16_t> operator "" s( const char16_t *str, size_t len ); // C++14, constexpr since C++20
basic_string<char32_t> operator "" s( const char32_t *str, size_t len ); // C++14, constexpr since C++20
} // std
*/
#include <__algorithm/max.h>
#include <__algorithm/min.h>
#include <__algorithm/remove.h>
#include <__algorithm/remove_if.h>
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__debug>
#include <__format/enable_insertable.h>
#include <__functional/hash.h>
#include <__functional/unary_function.h>
#include <__fwd/string.h>
#include <__ios/fpos.h>
#include <__iterator/distance.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/reverse_iterator.h>
#include <__iterator/wrap_iter.h>
#include <__memory/addressof.h>
#include <__memory/allocate_at_least.h>
#include <__memory/allocator.h>
#include <__memory/allocator_traits.h>
#include <__memory/compressed_pair.h>
#include <__memory/construct_at.h>
#include <__memory/pointer_traits.h>
#include <__memory/swap_allocator.h>
#include <__memory_resource/polymorphic_allocator.h>
#include <__string/char_traits.h>
#include <__string/extern_template_lists.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_array.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_nothrow_default_constructible.h>
#include <__type_traits/is_nothrow_move_assignable.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_standard_layout.h>
#include <__type_traits/is_trivial.h>
#include <__type_traits/noexcept_move_assign_container.h>
#include <__type_traits/remove_cvref.h>
#include <__utility/auto_cast.h>
#include <__utility/move.h>
#include <__utility/swap.h>
#include <__utility/unreachable.h>
#include <climits>
#include <cstdint>
#include <cstdio> // EOF
#include <cstring>
#include <limits>
#include <stdexcept>
#include <string_view>
#include <version>
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
# include <cwchar>
#endif
// standard-mandated includes
// [iterator.range]
#include <__iterator/access.h>
#include <__iterator/data.h>
#include <__iterator/empty.h>
#include <__iterator/reverse_access.h>
#include <__iterator/size.h>
// [string.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// basic_string
template<class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x,
const basic_string<_CharT, _Traits, _Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDDEN _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const _CharT* __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(_CharT __x, const basic_string<_CharT,_Traits,_Allocator>& __y);
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, const _CharT* __y);
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __x, _CharT __y);
extern template _LIBCPP_FUNC_VIS string operator+<char, char_traits<char>, allocator<char> >(char const*, string const&);
template <class _Iter>
struct __string_is_trivial_iterator : public false_type {};
template <class _Tp>
struct __string_is_trivial_iterator<_Tp*>
: public is_arithmetic<_Tp> {};
template <class _Iter>
struct __string_is_trivial_iterator<__wrap_iter<_Iter> >
: public __string_is_trivial_iterator<_Iter> {};
template <class _CharT, class _Traits, class _Tp>
struct __can_be_converted_to_string_view : public _BoolConstant<
is_convertible<const _Tp&, basic_string_view<_CharT, _Traits> >::value &&
!is_convertible<const _Tp&, const _CharT*>::value
> {};
struct __uninitialized_size_tag {};
template<class _CharT, class _Traits, class _Allocator>
class basic_string
{
public:
typedef basic_string __self;
typedef basic_string_view<_CharT, _Traits> __self_view;
typedef _Traits traits_type;
typedef _CharT 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_array<value_type>::value), "Character type of basic_string must not be an array");
static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string must be standard-layout");
static_assert(( is_trivial<value_type>::value), "Character type of basic_string must be trivial");
static_assert(( is_same<_CharT, typename traits_type::char_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");
static_assert(is_same<allocator_type, __rebind_alloc<__alloc_traits, value_type> >::value,
"[allocator.requirements] states that rebinding an allocator to the same type should result in the "
"original allocator");
// TODO: Implement iterator bounds checking without requiring the global database.
typedef __wrap_iter<pointer> iterator;
typedef __wrap_iter<const_pointer> const_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
private:
static_assert(CHAR_BIT == 8, "This implementation assumes that one byte contains 8 bits");
#ifdef _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
struct __long
{
pointer __data_;
size_type __size_;
size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1;
size_type __is_long_ : 1;
};
enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
(sizeof(__long) - 1)/sizeof(value_type) : 2};
struct __short
{
value_type __data_[__min_cap];
unsigned char __padding_[sizeof(value_type) - 1];
unsigned char __size_ : 7;
unsigned char __is_long_ : 1;
};
// The __endian_factor is required because the field we use to store the size
// has one fewer bit than it would if it were not a bitfield.
//
// If the LSB is used to store the short-flag in the short string representation,
// we have to multiply the size by two when it is stored and divide it by two when
// it is loaded to make sure that we always store an even number. In the long string
// representation, we can ignore this because we can assume that we always allocate
// an even amount of value_types.
//
// If the MSB is used for the short-flag, the max_size() is numeric_limits<size_type>::max() / 2.
// This does not impact the short string representation, since we never need the MSB
// for representing the size of a short string anyway.
#ifdef _LIBCPP_BIG_ENDIAN
static const size_type __endian_factor = 2;
#else
static const size_type __endian_factor = 1;
#endif
#else // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
#ifdef _LIBCPP_BIG_ENDIAN
static const size_type __endian_factor = 1;
#else
static const size_type __endian_factor = 2;
#endif
// Attribute 'packed' is used to keep the layout compatible with the
// previous definition that did not use bit fields. This is because on
// some platforms bit fields have a default size rather than the actual
// size used, e.g., it is 4 bytes on AIX. See D128285 for details.
struct __long
{
struct _LIBCPP_PACKED {
size_type __is_long_ : 1;
size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1;
};
size_type __size_;
pointer __data_;
};
enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
(sizeof(__long) - 1)/sizeof(value_type) : 2};
struct __short
{
struct _LIBCPP_PACKED {
unsigned char __is_long_ : 1;
unsigned char __size_ : 7;
};
char __padding_[sizeof(value_type) - 1];
value_type __data_[__min_cap];
};
#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
static_assert(sizeof(__short) == (sizeof(value_type) * (__min_cap + 1)), "__short has an unexpected size.");
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_;
// Construct a string with the given allocator and enough storage to hold `__size` characters, but
// don't initialize the characters. The contents of the string, including the null terminator, must be
// initialized separately.
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
explicit basic_string(__uninitialized_size_tag, size_type __size, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
if (__size > max_size())
__throw_length_error();
if (__fits_in_sso(__size)) {
__r_.first() = __rep();
__set_short_size(__size);
} else {
auto __capacity = __recommend(__size) + 1;
auto __allocation = __alloc_traits::allocate(__alloc(), __capacity);
__begin_lifetime(__allocation, __capacity);
__set_long_cap(__capacity);
__set_long_pointer(__allocation);
__set_long_size(__size);
}
std::__debug_db_insert_c(this);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator __make_iterator(pointer __p) {
return iterator(this, __p);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_iterator __make_const_iterator(const_pointer __p) const {
return const_iterator(this, __p);
}
public:
_LIBCPP_TEMPLATE_DATA_VIS static const size_type npos = -1;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string()
_NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
: __r_(__default_init_tag(), __default_init_tag()) {
std::__debug_db_insert_c(this);
__default_init();
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit basic_string(const allocator_type& __a)
#if _LIBCPP_STD_VER <= 14
_NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
#else
_NOEXCEPT
#endif
: __r_(__default_init_tag(), __a) {
std::__debug_db_insert_c(this);
__default_init();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(const basic_string& __str)
: __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc())) {
if (!__str.__is_long())
__r_.first() = __str.__r_.first();
else
__init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
std::__debug_db_insert_c(this);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(const basic_string& __str, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
if (!__str.__is_long())
__r_.first() = __str.__r_.first();
else
__init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
std::__debug_db_insert_c(this);
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(basic_string&& __str)
# if _LIBCPP_STD_VER <= 14
_NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
# else
_NOEXCEPT
# endif
: __r_(std::move(__str.__r_)) {
__str.__default_init();
std::__debug_db_insert_c(this);
if (__is_long())
std::__debug_db_swap(this, &__str);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(basic_string&& __str, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
if (__str.__is_long() && __a != __str.__alloc()) // copy, not move
__init(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
else {
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
__r_.first() = __str.__r_.first();
__str.__default_init();
}
std::__debug_db_insert_c(this);
if (__is_long())
std::__debug_db_swap(this, &__str);
}
#endif // _LIBCPP_CXX03_LANG
template <__enable_if_t<__is_allocator<_Allocator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(const _CharT* __s)
: __r_(__default_init_tag(), __default_init_tag()) {
_LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr");
__init(__s, traits_type::length(__s));
std::__debug_db_insert_c(this);
}
template <__enable_if_t<__is_allocator<_Allocator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(const _CharT* __s, const _Allocator& __a)
: __r_(__default_init_tag(), __a) {
_LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
__init(__s, traits_type::length(__s));
std::__debug_db_insert_c(this);
}
#if _LIBCPP_STD_VER >= 23
basic_string(nullptr_t) = delete;
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(const _CharT* __s, size_type __n)
: __r_(__default_init_tag(), __default_init_tag()) {
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
__init(__s, __n);
std::__debug_db_insert_c(this);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(const _CharT* __s, size_type __n, const _Allocator& __a)
: __r_(__default_init_tag(), __a) {
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
__init(__s, __n);
std::__debug_db_insert_c(this);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(size_type __n, _CharT __c)
: __r_(__default_init_tag(), __default_init_tag()) {
__init(__n, __c);
std::__debug_db_insert_c(this);
}
#if _LIBCPP_STD_VER >= 23
_LIBCPP_HIDE_FROM_ABI constexpr
basic_string(basic_string&& __str, size_type __pos, const _Allocator& __alloc = _Allocator())
: basic_string(std::move(__str), __pos, npos, __alloc) {}
_LIBCPP_HIDE_FROM_ABI constexpr
basic_string(basic_string&& __str, size_type __pos, size_type __n, const _Allocator& __alloc = _Allocator())
: __r_(__default_init_tag(), __alloc) {
if (__pos > __str.size())
__throw_out_of_range();
auto __len = std::min<size_type>(__n, __str.size() - __pos);
if (__alloc_traits::is_always_equal::value || __alloc == __str.__alloc()) {
__r_.first() = __str.__r_.first();
__str.__default_init();
_Traits::move(data(), data() + __pos, __len);
__set_size(__len);
_Traits::assign(data()[__len], value_type());
} else {
// Perform a copy because the allocators are not compatible.
__init(__str.data() + __pos, __len);
}
std::__debug_db_insert_c(this);
if (__is_long())
std::__debug_db_swap(this, &__str);
}
#endif
template <__enable_if_t<__is_allocator<_Allocator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(size_type __n, _CharT __c, const _Allocator& __a)
: __r_(__default_init_tag(), __a) {
__init(__n, __c);
std::__debug_db_insert_c(this);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(const basic_string& __str, size_type __pos, size_type __n, const _Allocator& __a = _Allocator())
: __r_(__default_init_tag(), __a) {
size_type __str_sz = __str.size();
if (__pos > __str_sz)
__throw_out_of_range();
__init(__str.data() + __pos, std::min(__n, __str_sz - __pos));
std::__debug_db_insert_c(this);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(const basic_string& __str, size_type __pos, const _Allocator& __a = _Allocator())
: __r_(__default_init_tag(), __a) {
size_type __str_sz = __str.size();
if (__pos > __str_sz)
__throw_out_of_range();
__init(__str.data() + __pos, __str_sz - __pos);
std::__debug_db_insert_c(this);
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a = allocator_type())
: __r_(__default_init_tag(), __a) {
__self_view __sv0 = __t;
__self_view __sv = __sv0.substr(__pos, __n);
__init(__sv.data(), __sv.size());
std::__debug_db_insert_c(this);
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit basic_string(const _Tp& __t)
: __r_(__default_init_tag(), __default_init_tag()) {
__self_view __sv = __t;
__init(__sv.data(), __sv.size());
std::__debug_db_insert_c(this);
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit basic_string(
const _Tp& __t, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
__self_view __sv = __t;
__init(__sv.data(), __sv.size());
std::__debug_db_insert_c(this);
}
template <class _InputIterator, __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(_InputIterator __first, _InputIterator __last)
: __r_(__default_init_tag(), __default_init_tag()) {
__init(__first, __last);
std::__debug_db_insert_c(this);
}
template <class _InputIterator, __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
__init(__first, __last);
std::__debug_db_insert_c(this);
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(initializer_list<_CharT> __il)
: __r_(__default_init_tag(), __default_init_tag()) {
__init(__il.begin(), __il.end());
std::__debug_db_insert_c(this);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string(initializer_list<_CharT> __il, const _Allocator& __a)
: __r_(__default_init_tag(), __a) {
__init(__il.begin(), __il.end());
std::__debug_db_insert_c(this);
}
#endif // _LIBCPP_CXX03_LANG
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 ~basic_string() {
std::__debug_db_erase_c(this);
if (__is_long())
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
operator __self_view() const _NOEXCEPT { return __self_view(data(), size()); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator=(const basic_string& __str);
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value, int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator=(const _Tp& __t) {
__self_view __sv = __t;
return assign(__sv);
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator=(basic_string&& __str)
_NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value)) {
__move_assign(__str, integral_constant<bool, __alloc_traits::propagate_on_container_move_assignment::value>());
return *this;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& operator=(const value_type* __s) {return assign(__s);}
#if _LIBCPP_STD_VER >= 23
basic_string& operator=(nullptr_t) = delete;
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator=(value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
iterator begin() _NOEXCEPT
{return __make_iterator(__get_pointer());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_iterator begin() const _NOEXCEPT
{return __make_const_iterator(__get_pointer());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
iterator end() _NOEXCEPT
{return __make_iterator(__get_pointer() + size());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_iterator end() const _NOEXCEPT
{return __make_const_iterator(__get_pointer() + size());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
reverse_iterator rbegin() _NOEXCEPT
{return reverse_iterator(end());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_reverse_iterator rbegin() const _NOEXCEPT
{return const_reverse_iterator(end());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
reverse_iterator rend() _NOEXCEPT
{return reverse_iterator(begin());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_reverse_iterator rend() const _NOEXCEPT
{return const_reverse_iterator(begin());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_iterator cbegin() const _NOEXCEPT
{return begin();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_iterator cend() const _NOEXCEPT
{return end();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_reverse_iterator crbegin() const _NOEXCEPT
{return rbegin();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_reverse_iterator crend() const _NOEXCEPT
{return rend();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type size() const _NOEXCEPT
{return __is_long() ? __get_long_size() : __get_short_size();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type length() const _NOEXCEPT {return size();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type max_size() const _NOEXCEPT {
size_type __m = __alloc_traits::max_size(__alloc());
if (__m <= std::numeric_limits<size_type>::max() / 2) {
return __m - __alignment;
} else {
bool __uses_lsb = __endian_factor == 2;
return __uses_lsb ? __m - __alignment : (__m / 2) - __alignment;
}
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type capacity() const _NOEXCEPT {
return (__is_long() ? __get_long_cap() : static_cast<size_type>(__min_cap)) - 1;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 void resize(size_type __n, value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void resize(size_type __n) { resize(__n, value_type()); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 void reserve(size_type __requested_capacity);
#if _LIBCPP_STD_VER >= 23
template <class _Op>
_LIBCPP_HIDE_FROM_ABI constexpr
void resize_and_overwrite(size_type __n, _Op __op) {
__resize_default_init(__n);
__erase_to_end(std::move(__op)(data(), _LIBCPP_AUTO_CAST(__n)));
}
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __resize_default_init(size_type __n);
_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void reserve() _NOEXCEPT { shrink_to_fit(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void shrink_to_fit() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void clear() _NOEXCEPT;
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
bool empty() const _NOEXCEPT {return size() == 0;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_reference operator[](size_type __pos) const _NOEXCEPT {
_LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
return *(data() + __pos);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](size_type __pos) _NOEXCEPT {
_LIBCPP_ASSERT(__pos <= size(), "string index out of bounds");
return *(__get_pointer() + __pos);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 const_reference at(size_type __n) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20 reference at(size_type __n);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator+=(const basic_string& __str) {
return append(__str);
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string >::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
operator+=(const _Tp& __t) {
__self_view __sv = __t; return append(__sv);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator+=(const value_type* __s) {
return append(__s);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& operator+=(value_type __c) {
push_back(__c);
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& operator+=(initializer_list<value_type> __il) { return append(__il); }
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& append(const basic_string& __str) {
return append(__str.data(), __str.size());
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
append(const _Tp& __t) {
__self_view __sv = __t;
return append(__sv.data(), __sv.size());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& append(const basic_string& __str, size_type __pos, size_type __n=npos);
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string&
append(const _Tp& __t, size_type __pos, size_type __n = npos);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& append(const value_type* __s, size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& append(const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& append(size_type __n, value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __append_default_init(size_type __n);
template <class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
append(_InputIterator __first, _InputIterator __last) {
const basic_string __temp(__first, __last, __alloc());
append(__temp.data(), __temp.size());
return *this;
}
template <class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
append(_ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 void push_back(value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void pop_back();
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference front() _NOEXCEPT {
_LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
return *__get_pointer();
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_reference front() const _NOEXCEPT {
_LIBCPP_ASSERT(!empty(), "string::front(): string is empty");
return *data();
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference back() _NOEXCEPT {
_LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
return *(__get_pointer() + size() - 1);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_reference back() const _NOEXCEPT {
_LIBCPP_ASSERT(!empty(), "string::back(): string is empty");
return *(data() + size() - 1);
}
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
assign(const _Tp& __t) {
__self_view __sv = __t;
return assign(__sv.data(), __sv.size());
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& assign(const basic_string& __str) { return *this = __str; }
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& assign(basic_string&& __str)
_NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
{*this = std::move(__str); return *this;}
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& assign(const basic_string& __str, size_type __pos, size_type __n=npos);
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
assign(const _Tp& __t, size_type __pos, size_type __n = npos);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& assign(const value_type* __s, size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& assign(const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& assign(size_type __n, value_type __c);
template <class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
assign(_InputIterator __first, _InputIterator __last);
template <class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
assign(_ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
insert(size_type __pos1, const basic_string& __str) {
return insert(__pos1, __str.data(), __str.size());
}
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
insert(size_type __pos1, const _Tp& __t) {
__self_view __sv = __t;
return insert(__pos1, __sv.data(), __sv.size());
}
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n = npos);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
insert(size_type __pos1, const basic_string& __str, size_type __pos2, size_type __n = npos);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& insert(size_type __pos, const value_type* __s, size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& insert(size_type __pos, const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& insert(size_type __pos, size_type __n, value_type __c);
_LIBCPP_CONSTEXPR_SINCE_CXX20 iterator insert(const_iterator __pos, value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator
insert(const_iterator __pos, size_type __n, value_type __c) {
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
"string::insert(iterator, n, value) called with an iterator not referring to this string");
difference_type __p = __pos - begin();
insert(static_cast<size_type>(__p), __n, __c);
return begin() + __p;
}
template <class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator
insert(const_iterator __pos, _InputIterator __first, _InputIterator __last);
template <class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator
insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
iterator insert(const_iterator __pos, initializer_list<value_type> __il)
{return insert(__pos, __il.begin(), __il.end());}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& erase(size_type __pos = 0, size_type __n = npos);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
iterator erase(const_iterator __pos);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
iterator erase(const_iterator __first, const_iterator __last);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(size_type __pos1, size_type __n1, const basic_string& __str) {
return replace(__pos1, __n1, __str.data(), __str.size());
}
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(size_type __pos1, size_type __n1, const _Tp& __t) {
__self_view __sv = __t;
return replace(__pos1, __n1, __sv.data(), __sv.size());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2, size_type __n2 = npos);
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2 = npos);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& replace(size_type __pos, size_type __n1, const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& replace(size_type __pos, size_type __n1, size_type __n2, value_type __c);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, const basic_string& __str) {
return replace(
static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __str.data(), __str.size());
}
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, const _Tp& __t) {
__self_view __sv = __t;
return replace(__i1 - begin(), __i2 - __i1, __sv);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, const value_type* __s, size_type __n) {
return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s, __n);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, const value_type* __s) {
return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __s);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, size_type __n, value_type __c) {
return replace(static_cast<size_type>(__i1 - begin()), static_cast<size_type>(__i2 - __i1), __n, __c);
}
template <class _InputIterator, __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
{return replace(__i1, __i2, __il.begin(), __il.end());}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
#if _LIBCPP_STD_VER <= 20
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string substr(size_type __pos = 0, size_type __n = npos) const {
return basic_string(*this, __pos, __n);
}
#else
_LIBCPP_HIDE_FROM_ABI constexpr
basic_string substr(size_type __pos = 0, size_type __n = npos) const& {
return basic_string(*this, __pos, __n);
}
_LIBCPP_HIDE_FROM_ABI constexpr
basic_string substr(size_type __pos = 0, size_type __n = npos) && {
return basic_string(std::move(*this), __pos, __n);
}
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void swap(basic_string& __str)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT;
#else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value);
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const value_type* c_str() const _NOEXCEPT {return data();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const value_type* data() const _NOEXCEPT {return std::__to_address(__get_pointer());}
#if _LIBCPP_STD_VER >= 17 || defined(_LIBCPP_BUILDING_LIBRARY)
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
value_type* data() _NOEXCEPT {return std::__to_address(__get_pointer());}
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
allocator_type get_allocator() const _NOEXCEPT {return __alloc();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
find(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 size_type find(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 size_type find(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type rfind(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
rfind(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20
size_type rfind(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type rfind(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 size_type rfind(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
find_first_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
find_last_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_not_of(const basic_string& __str, size_type __pos = 0) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
find_first_not_of(const _Tp& __t, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_not_of(const value_type* __s, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_first_not_of(value_type __c, size_type __pos = 0) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_not_of(const basic_string& __str, size_type __pos = npos) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type
find_last_not_of(const _Tp& __t, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_not_of(const value_type* __s, size_type __pos, size_type __n) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_not_of(const value_type* __s, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type find_last_not_of(value_type __c, size_type __pos = npos) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
int compare(const basic_string& __str) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 int
compare(const _Tp& __t) const _NOEXCEPT;
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 int
compare(size_type __pos1, size_type __n1, const _Tp& __t) const;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
int compare(size_type __pos1, size_type __n1, const basic_string& __str) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20
int compare(size_type __pos1, size_type __n1, const basic_string& __str, size_type __pos2,
size_type __n2 = npos) const;
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string>::value,
int> = 0>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 int
compare(size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2 = npos) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20 int compare(const value_type* __s) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 int compare(size_type __pos1, size_type __n1, const value_type* __s) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20
int compare(size_type __pos1, size_type __n1, const value_type* __s, size_type __n2) const;
#if _LIBCPP_STD_VER >= 20
constexpr _LIBCPP_HIDE_FROM_ABI
bool starts_with(__self_view __sv) const noexcept
{ return __self_view(data(), size()).starts_with(__sv); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool starts_with(value_type __c) const noexcept
{ return !empty() && _Traits::eq(front(), __c); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool starts_with(const value_type* __s) const noexcept
{ return starts_with(__self_view(__s)); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool ends_with(__self_view __sv) const noexcept
{ return __self_view(data(), size()).ends_with( __sv); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool ends_with(value_type __c) const noexcept
{ return !empty() && _Traits::eq(back(), __c); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool ends_with(const value_type* __s) const noexcept
{ return ends_with(__self_view(__s)); }
#endif
#if _LIBCPP_STD_VER >= 23
constexpr _LIBCPP_HIDE_FROM_ABI
bool contains(__self_view __sv) const noexcept
{ return __self_view(data(), size()).contains(__sv); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool contains(value_type __c) const noexcept
{ return __self_view(data(), size()).contains(__c); }
constexpr _LIBCPP_HIDE_FROM_ABI
bool contains(const value_type* __s) const
{ return __self_view(data(), size()).contains(__s); }
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __invariants() const;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __clear_and_shrink() _NOEXCEPT;
#ifdef _LIBCPP_ENABLE_DEBUG_MODE
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_ENABLE_DEBUG_MODE
private:
template<class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
bool friend operator==(const basic_string<char, char_traits<char>, _Alloc>& __lhs,
const basic_string<char, char_traits<char>, _Alloc>& __rhs) _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __shrink_or_extend(size_type __target_capacity);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
bool __is_long() const _NOEXCEPT {
if (__libcpp_is_constant_evaluated())
return true;
return __r_.first().__s.__is_long_;
}
static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __begin_lifetime(pointer __begin, size_type __n) {
#if _LIBCPP_STD_VER >= 20
if (__libcpp_is_constant_evaluated()) {
for (size_type __i = 0; __i != __n; ++__i)
std::construct_at(std::addressof(__begin[__i]));
}
#else
(void)__begin;
(void)__n;
#endif // _LIBCPP_STD_VER >= 20
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __default_init() {
__r_.first() = __rep();
if (__libcpp_is_constant_evaluated()) {
size_type __sz = __recommend(0) + 1;
pointer __ptr = __alloc_traits::allocate(__alloc(), __sz);
__begin_lifetime(__ptr, __sz);
__set_long_pointer(__ptr);
__set_long_cap(__sz);
__set_long_size(0);
}
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __deallocate_constexpr() {
if (__libcpp_is_constant_evaluated() && __get_pointer() != nullptr)
__alloc_traits::deallocate(__alloc(), __get_pointer(), __get_long_cap());
}
_LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI static bool __fits_in_sso(size_type __sz) {
// SSO is disabled during constant evaluation because `__is_long` isn't constexpr friendly
return !__libcpp_is_constant_evaluated() && (__sz < __min_cap);
}
template <class _ForwardIterator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14
iterator __insert_from_safe_copy(size_type __n, size_type __ip, _ForwardIterator __first, _ForwardIterator __last) {
size_type __sz = size();
size_type __cap = capacity();
value_type* __p;
if (__cap - __sz >= __n)
{
__p = std::__to_address(__get_pointer());
size_type __n_move = __sz - __ip;
if (__n_move != 0)
traits_type::move(__p + __ip + __n, __p + __ip, __n_move);
}
else
{
__grow_by(__cap, __sz + __n - __cap, __sz, __ip, 0, __n);
__p = std::__to_address(__get_long_pointer());
}
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
for (__p += __ip; __first != __last; ++__p, ++__first)
traits_type::assign(*__p, *__first);
return begin() + __ip;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 allocator_type& __alloc() _NOEXCEPT { return __r_.second(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR const allocator_type& __alloc() const _NOEXCEPT { return __r_.second(); }
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __set_short_size(size_type __s) _NOEXCEPT {
_LIBCPP_ASSERT(__s < __min_cap, "__s should never be greater than or equal to the short string capacity");
__r_.first().__s.__size_ = __s;
__r_.first().__s.__is_long_ = false;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type __get_short_size() const _NOEXCEPT {
_LIBCPP_ASSERT(!__r_.first().__s.__is_long_, "String has to be short when trying to get the short size");
return __r_.first().__s.__size_;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __set_long_size(size_type __s) _NOEXCEPT
{__r_.first().__l.__size_ = __s;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type __get_long_size() const _NOEXCEPT
{return __r_.first().__l.__size_;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __set_size(size_type __s) _NOEXCEPT
{if (__is_long()) __set_long_size(__s); else __set_short_size(__s);}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __set_long_cap(size_type __s) _NOEXCEPT {
__r_.first().__l.__cap_ = __s / __endian_factor;
__r_.first().__l.__is_long_ = true;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type __get_long_cap() const _NOEXCEPT {
return __r_.first().__l.__cap_ * __endian_factor;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __set_long_pointer(pointer __p) _NOEXCEPT
{__r_.first().__l.__data_ = __p;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
pointer __get_long_pointer() _NOEXCEPT
{return __r_.first().__l.__data_;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_pointer __get_long_pointer() const _NOEXCEPT
{return __r_.first().__l.__data_;}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
pointer __get_short_pointer() _NOEXCEPT
{return pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]);}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_pointer __get_short_pointer() const _NOEXCEPT
{return pointer_traits<const_pointer>::pointer_to(__r_.first().__s.__data_[0]);}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
pointer __get_pointer() _NOEXCEPT
{return __is_long() ? __get_long_pointer() : __get_short_pointer();}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
const_pointer __get_pointer() const _NOEXCEPT
{return __is_long() ? __get_long_pointer() : __get_short_pointer();}
template <size_type __a> static
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type __align_it(size_type __s) _NOEXCEPT
{return (__s + (__a-1)) & ~(__a-1);}
enum {__alignment = 16};
static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
size_type __recommend(size_type __s) _NOEXCEPT
{
if (__s < __min_cap) {
if (__libcpp_is_constant_evaluated())
return static_cast<size_type>(__min_cap);
else
return static_cast<size_type>(__min_cap) - 1;
}
size_type __guess = __align_it<sizeof(value_type) < __alignment ?
__alignment/sizeof(value_type) : 1 > (__s+1) - 1;
if (__guess == __min_cap) ++__guess;
return __guess;
}
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void __init(const value_type* __s, size_type __sz, size_type __reserve);
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void __init(const value_type* __s, size_type __sz);
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void __init(size_type __n, value_type __c);
// Slow path for the (inlined) copy constructor for 'long' strings.
// Always externally instantiated and not inlined.
// Requires that __s is zero terminated.
// The main reason for this function to exist is because for unstable, we
// want to allow inlining of the copy constructor. However, we don't want
// to call the __init() functions as those are marked as inline which may
// result in over-aggressive inlining by the compiler, where our aim is
// to only inline the fast path code directly in the ctor.
_LIBCPP_CONSTEXPR_SINCE_CXX20 void __init_copy_ctor_external(const value_type* __s, size_type __sz);
template <class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void __init(_InputIterator __first, _InputIterator __last);
template <class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void __init(_ForwardIterator __first, _ForwardIterator __last);
_LIBCPP_CONSTEXPR_SINCE_CXX20
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);
_LIBCPP_CONSTEXPR_SINCE_CXX20
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);
// __assign_no_alias is invoked for assignment operations where we
// have proof that the input does not alias the current instance.
// For example, operator=(basic_string) performs a 'self' check.
template <bool __is_short>
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& __assign_no_alias(const value_type* __s, size_type __n);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __erase_to_end(size_type __pos) {
__null_terminate_at(std::__to_address(__get_pointer()), __pos);
}
// __erase_external_with_move is invoked for erase() invocations where
// `n ~= npos`, likely requiring memory moves on the string data.
_LIBCPP_CONSTEXPR_SINCE_CXX20 void __erase_external_with_move(size_type __pos, size_type __n);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __copy_assign_alloc(const basic_string& __str)
{__copy_assign_alloc(__str, integral_constant<bool,
__alloc_traits::propagate_on_container_copy_assignment::value>());}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __copy_assign_alloc(const basic_string& __str, true_type)
{
if (__alloc() == __str.__alloc())
__alloc() = __str.__alloc();
else
{
if (!__str.__is_long())
{
__clear_and_shrink();
__alloc() = __str.__alloc();
}
else
{
allocator_type __a = __str.__alloc();
auto __allocation = std::__allocate_at_least(__a, __str.__get_long_cap());
__begin_lifetime(__allocation.ptr, __allocation.count);
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
__alloc() = std::move(__a);
__set_long_pointer(__allocation.ptr);
__set_long_cap(__allocation.count);
__set_long_size(__str.size());
}
}
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT
{}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __move_assign(basic_string& __str, false_type)
_NOEXCEPT_(__alloc_traits::is_always_equal::value);
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __move_assign(basic_string& __str, true_type)
#if _LIBCPP_STD_VER >= 17
_NOEXCEPT;
#else
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
#endif
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
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_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __move_assign_alloc(basic_string& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
{
__alloc() = std::move(__c.__alloc());
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void __move_assign_alloc(basic_string&, false_type)
_NOEXCEPT
{}
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& __assign_external(const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& __assign_external(const value_type* __s, size_type __n);
// Assigns the value in __s, guaranteed to be __n < __min_cap in length.
inline basic_string& __assign_short(const value_type* __s, size_type __n) {
pointer __p = __is_long()
? (__set_long_size(__n), __get_long_pointer())
: (__set_short_size(__n), __get_short_pointer());
traits_type::move(std::__to_address(__p), __s, __n);
traits_type::assign(__p[__n], value_type());
return *this;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string& __null_terminate_at(value_type* __p, size_type __newsz) {
__set_size(__newsz);
__invalidate_iterators_past(__newsz);
traits_type::assign(__p[__newsz], value_type());
return *this;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __invalidate_iterators_past(size_type);
template<class _Tp>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
bool __addr_in_range(_Tp&& __t) const {
// assume that the ranges overlap, because we can't check during constant evaluation
if (__libcpp_is_constant_evaluated())
return true;
const volatile void *__p = std::addressof(__t);
return data() <= __p && __p <= data() + size();
}
_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI
void __throw_length_error() const {
std::__throw_length_error("basic_string");
}
_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI
void __throw_out_of_range() const {
std::__throw_out_of_range("basic_string");
}
friend _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string operator+<>(const basic_string&, const basic_string&);
friend _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string operator+<>(const value_type*, const basic_string&);
friend _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string operator+<>(value_type, const basic_string&);
friend _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string operator+<>(const basic_string&, const value_type*);
friend _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string operator+<>(const basic_string&, value_type);
};
// These declarations must appear before any functions are implicitly used
// so that they have the correct visibility specifier.
#define _LIBCPP_DECLARE(...) extern template __VA_ARGS__;
#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION
_LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_DECLARE, char)
# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_DECLARE, wchar_t)
# endif
#else
_LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_DECLARE, char)
# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_DECLARE, wchar_t)
# endif
#endif
#undef _LIBCPP_DECLARE
#if _LIBCPP_STD_VER >= 17
template<class _InputIterator,
class _CharT = __iter_value_type<_InputIterator>,
class _Allocator = allocator<_CharT>,
class = enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>
>
basic_string(_InputIterator, _InputIterator, _Allocator = _Allocator())
-> basic_string<_CharT, char_traits<_CharT>, _Allocator>;
template<class _CharT,
class _Traits,
class _Allocator = allocator<_CharT>,
class = enable_if_t<__is_allocator<_Allocator>::value>
>
explicit basic_string(basic_string_view<_CharT, _Traits>, const _Allocator& = _Allocator())
-> basic_string<_CharT, _Traits, _Allocator>;
template<class _CharT,
class _Traits,
class _Allocator = allocator<_CharT>,
class = enable_if_t<__is_allocator<_Allocator>::value>,
class _Sz = typename allocator_traits<_Allocator>::size_type
>
basic_string(basic_string_view<_CharT, _Traits>, _Sz, _Sz, const _Allocator& = _Allocator())
-> basic_string<_CharT, _Traits, _Allocator>;
#endif
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__invalidate_iterators_past(size_type __pos)
{
#ifdef _LIBCPP_ENABLE_DEBUG_MODE
if (!__libcpp_is_constant_evaluated()) {
__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)
std::memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
}
}
__get_db()->unlock();
}
}
#else
(void)__pos;
#endif // _LIBCPP_ENABLE_DEBUG_MODE
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s,
size_type __sz,
size_type __reserve)
{
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
if (__reserve > max_size())
__throw_length_error();
pointer __p;
if (__fits_in_sso(__reserve))
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__reserve) + 1);
__p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__set_long_size(__sz);
}
traits_type::copy(std::__to_address(__p), __s, __sz);
traits_type::assign(__p[__sz], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s, size_type __sz)
{
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
if (__sz > max_size())
__throw_length_error();
pointer __p;
if (__fits_in_sso(__sz))
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1);
__p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__set_long_size(__sz);
}
traits_type::copy(std::__to_address(__p), __s, __sz);
traits_type::assign(__p[__sz], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external(
const value_type* __s, size_type __sz) {
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
pointer __p;
if (__fits_in_sso(__sz)) {
__p = __get_short_pointer();
__set_short_size(__sz);
} else {
if (__sz > max_size())
__throw_length_error();
auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1);
__p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__set_long_size(__sz);
}
traits_type::copy(std::__to_address(__p), __s, __sz + 1);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c)
{
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
if (__n > max_size())
__throw_length_error();
pointer __p;
if (__fits_in_sso(__n))
{
__set_short_size(__n);
__p = __get_short_pointer();
}
else
{
auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__n) + 1);
__p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__set_long_size(__n);
}
traits_type::assign(std::__to_address(__p), __n, __c);
traits_type::assign(__p[__n], value_type());
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20
void basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last)
{
__default_init();
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (; __first != __last; ++__first)
push_back(*__first);
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
}
catch (...)
{
if (__is_long())
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
}
template <class _CharT, class _Traits, class _Allocator>
template <class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last)
{
if (__libcpp_is_constant_evaluated())
__r_.first() = __rep();
size_type __sz = static_cast<size_type>(std::distance(__first, __last));
if (__sz > max_size())
__throw_length_error();
pointer __p;
if (__fits_in_sso(__sz))
{
__set_short_size(__sz);
__p = __get_short_pointer();
}
else
{
auto __allocation = std::__allocate_at_least(__alloc(), __recommend(__sz) + 1);
__p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__set_long_size(__sz);
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (; __first != __last; ++__first, (void) ++__p)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
}
catch (...)
{
if (__is_long())
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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)
__throw_length_error();
pointer __old_p = __get_pointer();
size_type __cap = __old_cap < __ms / 2 - __alignment ?
__recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) :
__ms - 1;
auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1);
pointer __p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
std::__debug_db_invalidate_all(this);
if (__n_copy != 0)
traits_type::copy(std::__to_address(__p),
std::__to_address(__old_p), __n_copy);
if (__n_add != 0)
traits_type::copy(std::__to_address(__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(std::__to_address(__p) + __n_copy + __n_add,
std::__to_address(__old_p) + __n_copy + __n_del, __sec_cp_sz);
if (__old_cap+1 != __min_cap || __libcpp_is_constant_evaluated())
__alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
__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
_LIBCPP_CONSTEXPR_SINCE_CXX20
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)
__throw_length_error();
pointer __old_p = __get_pointer();
size_type __cap = __old_cap < __ms / 2 - __alignment ?
__recommend(std::max(__old_cap + __delta_cap, 2 * __old_cap)) :
__ms - 1;
auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1);
pointer __p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
std::__debug_db_invalidate_all(this);
if (__n_copy != 0)
traits_type::copy(std::__to_address(__p),
std::__to_address(__old_p), __n_copy);
size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
if (__sec_cp_sz != 0)
traits_type::copy(std::__to_address(__p) + __n_copy + __n_add,
std::__to_address(__old_p) + __n_copy + __n_del,
__sec_cp_sz);
if (__libcpp_is_constant_evaluated() || __old_cap + 1 != __min_cap)
__alloc_traits::deallocate(__alloc(), __old_p, __old_cap + 1);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
}
// assign
template <class _CharT, class _Traits, class _Allocator>
template <bool __is_short>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias(
const value_type* __s, size_type __n) {
size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap();
if (__n < __cap) {
pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer();
__is_short ? __set_short_size(__n) : __set_long_size(__n);
traits_type::copy(std::__to_address(__p), __s, __n);
traits_type::assign(__p[__n], value_type());
__invalidate_iterators_past(__n);
} else {
size_type __sz = __is_short ? __get_short_size() : __get_long_size();
__grow_by_and_replace(__cap - 1, __n - __cap + 1, __sz, 0, __sz, __n, __s);
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::__assign_external(
const value_type* __s, size_type __n) {
size_type __cap = capacity();
if (__cap >= __n) {
value_type* __p = std::__to_address(__get_pointer());
traits_type::move(__p, __s, __n);
return __null_terminate_at(__p, __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>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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");
return (__builtin_constant_p(__n) && __fits_in_sso(__n))
? __assign_short(__s, __n)
: __assign_external(__s, __n);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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);
}
value_type* __p = std::__to_address(__get_pointer());
traits_type::assign(__p, __n, __c);
return __null_terminate_at(__p, __n);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str)
{
if (this != std::addressof(__str)) {
__copy_assign_alloc(__str);
if (!__is_long()) {
if (!__str.__is_long()) {
__r_.first() = __str.__r_.first();
} else {
return __assign_no_alias<true>(__str.data(), __str.size());
}
} else {
return __assign_no_alias<false>(__str.data(), __str.size());
}
}
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, false_type)
_NOEXCEPT_(__alloc_traits::is_always_equal::value)
{
if (__alloc() != __str.__alloc())
assign(__str);
else
__move_assign(__str, true_type());
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__move_assign(basic_string& __str, true_type)
#if _LIBCPP_STD_VER >= 17
_NOEXCEPT
#else
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
#endif
{
if (__is_long()) {
__alloc_traits::deallocate(__alloc(), __get_long_pointer(),
__get_long_cap());
#if _LIBCPP_STD_VER <= 14
if (!is_nothrow_move_assignable<allocator_type>::value) {
__set_short_size(0);
traits_type::assign(__get_short_pointer()[0], value_type());
}
#endif
}
__move_assign_alloc(__str);
__r_.first() = __str.__r_.first();
if (__libcpp_is_constant_evaluated()) {
__str.__default_init();
} else {
__str.__set_short_size(0);
traits_type::assign(__str.__get_short_pointer()[0], value_type());
}
}
#endif
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last)
{
const basic_string __temp(__first, __last, __alloc());
assign(__temp.data(), __temp.size());
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
template<class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last)
{
size_type __cap = capacity();
size_type __n = __string_is_trivial_iterator<_ForwardIterator>::value ?
static_cast<size_type>(std::distance(__first, __last)) : 0;
if (__string_is_trivial_iterator<_ForwardIterator>::value &&
(__cap >= __n || !__addr_in_range(*__first)))
{
if (__cap < __n)
{
size_type __sz = size();
__grow_by(__cap, __n - __cap, __sz, 0, __sz);
}
pointer __p = __get_pointer();
for (; __first != __last; ++__p, (void) ++__first)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
__set_size(__n);
__invalidate_iterators_past(__n);
}
else
{
const basic_string __temp(__first, __last, __alloc());
assign(__temp.data(), __temp.size());
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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)
__throw_out_of_range();
return assign(__str.data() + __pos, std::min(__n, __sz - __pos));
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value,
int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const _Tp& __t, size_type __pos, size_type __n) {
__self_view __sv = __t;
size_type __sz = __sv.size();
if (__pos > __sz)
__throw_out_of_range();
return assign(__sv.data() + __pos, std::min(__n, __sz - __pos));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::__assign_external(const value_type* __s) {
return __assign_external(__s, traits_type::length(__s));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "string::assign received nullptr");
return __builtin_constant_p(*__s)
? (__fits_in_sso(traits_type::length(__s))
? __assign_short(__s, traits_type::length(__s))
: __assign_external(__s, traits_type::length(__s)))
: __assign_external(__s);
}
// append
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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 = std::__to_address(__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>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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(std::__to_address(__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>
_LIBCPP_CONSTEXPR_SINCE_CXX20 inline void
basic_string<_CharT, _Traits, _Allocator>::__append_default_init(size_type __n)
{
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();
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
}
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
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 = false; // the string is always long after __grow_by
}
pointer __p = __get_pointer();
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());
}
template <class _CharT, class _Traits, class _Allocator>
template<class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(
_ForwardIterator __first, _ForwardIterator __last)
{
size_type __sz = size();
size_type __cap = capacity();
size_type __n = static_cast<size_type>(std::distance(__first, __last));
if (__n)
{
if (__string_is_trivial_iterator<_ForwardIterator>::value &&
!__addr_in_range(*__first))
{
if (__cap - __sz < __n)
__grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
pointer __p = __get_pointer() + __sz;
for (; __first != __last; ++__p, (void) ++__first)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
__set_size(__sz + __n);
}
else
{
const basic_string __temp(__first, __last, __alloc());
append(__temp.data(), __temp.size());
}
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(const basic_string& __str, size_type __pos, size_type __n)
{
size_type __sz = __str.size();
if (__pos > __sz)
__throw_out_of_range();
return append(__str.data() + __pos, std::min(__n, __sz - __pos));
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value,
int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(const _Tp& __t, size_type __pos, size_type __n) {
__self_view __sv = __t;
size_type __sz = __sv.size();
if (__pos > __sz)
__throw_out_of_range();
return append(__sv.data() + __pos, std::min(__n, __sz - __pos));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::append(const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "string::append received nullptr");
return append(__s, traits_type::length(__s));
}
// insert
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s, size_type __n)
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::insert received nullptr");
size_type __sz = size();
if (__pos > __sz)
__throw_out_of_range();
size_type __cap = capacity();
if (__libcpp_is_constant_evaluated()) {
if (__cap - __sz >= __n)
__grow_by_and_replace(__cap, 0, __sz, __pos, 0, __n, __s);
else
__grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s);
return *this;
}
if (__cap - __sz >= __n)
{
if (__n)
{
value_type* __p = std::__to_address(__get_pointer());
size_type __n_move = __sz - __pos;
if (__n_move != 0)
{
if (__p + __pos <= __s && __s < __p + __sz)
__s += __n;
traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
}
traits_type::move(__p + __pos, __s, __n);
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
}
}
else
__grow_by_and_replace(__cap, __sz + __n - __cap, __sz, __pos, 0, __n, __s);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, size_type __n, value_type __c)
{
size_type __sz = size();
if (__pos > __sz)
__throw_out_of_range();
if (__n)
{
size_type __cap = capacity();
value_type* __p;
if (__cap - __sz >= __n)
{
__p = std::__to_address(__get_pointer());
size_type __n_move = __sz - __pos;
if (__n_move != 0)
traits_type::move(__p + __pos + __n, __p + __pos, __n_move);
}
else
{
__grow_by(__cap, __sz + __n - __cap, __sz, __pos, 0, __n);
__p = std::__to_address(__get_long_pointer());
}
traits_type::assign(__p + __pos, __n, __c);
__sz += __n;
__set_size(__sz);
traits_type::assign(__p[__sz], value_type());
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator, __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::iterator
basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _InputIterator __first, _InputIterator __last)
{
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
"string::insert(iterator, range) called with an iterator not"
" referring to this string");
const basic_string __temp(__first, __last, __alloc());
return insert(__pos, __temp.data(), __temp.data() + __temp.size());
}
template <class _CharT, class _Traits, class _Allocator>
template<class _ForwardIterator, __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::iterator
basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last)
{
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
"string::insert(iterator, range) called with an iterator not referring to this string");
size_type __ip = static_cast<size_type>(__pos - begin());
size_type __n = static_cast<size_type>(std::distance(__first, __last));
if (__n == 0)
return begin() + __ip;
if (__string_is_trivial_iterator<_ForwardIterator>::value && !__addr_in_range(*__first))
{
return __insert_from_safe_copy(__n, __ip, __first, __last);
}
else
{
const basic_string __temp(__first, __last, __alloc());
return __insert_from_safe_copy(__n, __ip, __temp.begin(), __temp.end());
}
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const basic_string& __str,
size_type __pos2, size_type __n)
{
size_type __str_sz = __str.size();
if (__pos2 > __str_sz)
__throw_out_of_range();
return insert(__pos1, __str.data() + __pos2, std::min(__n, __str_sz - __pos2));
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value,
int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos1, const _Tp& __t, size_type __pos2, size_type __n) {
__self_view __sv = __t;
size_type __str_sz = __sv.size();
if (__pos2 > __str_sz)
__throw_out_of_range();
return insert(__pos1, __sv.data() + __pos2, std::min(__n, __str_sz - __pos2));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::insert(size_type __pos, const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "string::insert received nullptr");
return insert(__pos, __s, traits_type::length(__s));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::iterator
basic_string<_CharT, _Traits, _Allocator>::insert(const_iterator __pos, value_type __c)
{
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
"string::insert(iterator, character) called with an iterator not"
" referring to this string");
size_type __ip = static_cast<size_type>(__pos - begin());
size_type __sz = size();
size_type __cap = capacity();
value_type* __p;
if (__cap == __sz)
{
__grow_by(__cap, 1, __sz, __ip, 0, 1);
__p = std::__to_address(__get_long_pointer());
}
else
{
__p = std::__to_address(__get_pointer());
size_type __n_move = __sz - __ip;
if (__n_move != 0)
traits_type::move(__p + __ip + 1, __p + __ip, __n_move);
}
traits_type::assign(__p[__ip], __c);
traits_type::assign(__p[++__sz], value_type());
__set_size(__sz);
return begin() + static_cast<difference_type>(__ip);
}
// replace
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s, size_type __n2)
_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
{
_LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::replace received nullptr");
size_type __sz = size();
if (__pos > __sz)
__throw_out_of_range();
__n1 = std::min(__n1, __sz - __pos);
size_type __cap = capacity();
if (__cap - __sz + __n1 >= __n2)
{
if (__libcpp_is_constant_evaluated()) {
__grow_by_and_replace(__cap, 0, __sz, __pos, __n1, __n2, __s);
return *this;
}
value_type* __p = std::__to_address(__get_pointer());
if (__n1 != __n2)
{
size_type __n_move = __sz - __pos - __n1;
if (__n_move != 0)
{
if (__n1 > __n2)
{
traits_type::move(__p + __pos, __s, __n2);
traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
return __null_terminate_at(__p, __sz + (__n2 - __n1));
}
if (__p + __pos < __s && __s < __p + __sz)
{
if (__p + __pos + __n1 <= __s)
__s += __n2 - __n1;
else // __p + __pos < __s < __p + __pos + __n1
{
traits_type::move(__p + __pos, __s, __n1);
__pos += __n1;
__s += __n2;
__n2 -= __n1;
__n1 = 0;
}
}
traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
}
}
traits_type::move(__p + __pos, __s, __n2);
return __null_terminate_at(__p, __sz + (__n2 - __n1));
}
else
__grow_by_and_replace(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2, __s);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, size_type __n2, value_type __c)
{
size_type __sz = size();
if (__pos > __sz)
__throw_out_of_range();
__n1 = std::min(__n1, __sz - __pos);
size_type __cap = capacity();
value_type* __p;
if (__cap - __sz + __n1 >= __n2)
{
__p = std::__to_address(__get_pointer());
if (__n1 != __n2)
{
size_type __n_move = __sz - __pos - __n1;
if (__n_move != 0)
traits_type::move(__p + __pos + __n2, __p + __pos + __n1, __n_move);
}
}
else
{
__grow_by(__cap, __sz - __n1 + __n2 - __cap, __sz, __pos, __n1, __n2);
__p = std::__to_address(__get_long_pointer());
}
traits_type::assign(__p + __pos, __n2, __c);
return __null_terminate_at(__p, __sz - (__n1 - __n2));
}
template <class _CharT, class _Traits, class _Allocator>
template<class _InputIterator, __enable_if_t<__is_cpp17_input_iterator<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(const_iterator __i1, const_iterator __i2,
_InputIterator __j1, _InputIterator __j2)
{
const basic_string __temp(__j1, __j2, __alloc());
return replace(__i1, __i2, __temp);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos1, size_type __n1, const basic_string& __str,
size_type __pos2, size_type __n2)
{
size_type __str_sz = __str.size();
if (__pos2 > __str_sz)
__throw_out_of_range();
return replace(__pos1, __n1, __str.data() + __pos2, std::min(__n2, __str_sz - __pos2));
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value,
int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(
size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2) {
__self_view __sv = __t;
size_type __str_sz = __sv.size();
if (__pos2 > __str_sz)
__throw_out_of_range();
return replace(__pos1, __n1, __sv.data() + __pos2, std::min(__n2, __str_sz - __pos2));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::replace(size_type __pos, size_type __n1, const value_type* __s)
{
_LIBCPP_ASSERT(__s != nullptr, "string::replace received nullptr");
return replace(__pos, __n1, __s, traits_type::length(__s));
}
// erase
// 'externally instantiated' erase() implementation, called when __n != npos.
// Does not check __pos against size()
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__erase_external_with_move(
size_type __pos, size_type __n)
{
if (__n)
{
size_type __sz = size();
value_type* __p = std::__to_address(__get_pointer());
__n = std::min(__n, __sz - __pos);
size_type __n_move = __sz - __pos - __n;
if (__n_move != 0)
traits_type::move(__p + __pos, __p + __pos + __n, __n_move);
__null_terminate_at(__p, __sz - __n);
}
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::erase(size_type __pos,
size_type __n) {
if (__pos > size())
__throw_out_of_range();
if (__n == npos) {
__erase_to_end(__pos);
} else {
__erase_external_with_move(__pos, __n);
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::iterator
basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __pos)
{
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__pos) == this,
"string::erase(iterator) called with an iterator not"
" referring to this string");
_LIBCPP_ASSERT(__pos != end(), "string::erase(iterator) called with a non-dereferenceable iterator");
iterator __b = begin();
size_type __r = static_cast<size_type>(__pos - __b);
erase(__r, 1);
return __b + static_cast<difference_type>(__r);
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::iterator
basic_string<_CharT, _Traits, _Allocator>::erase(const_iterator __first, const_iterator __last)
{
_LIBCPP_DEBUG_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this,
"string::erase(iterator, iterator) called with an iterator not"
" referring to this string");
_LIBCPP_ASSERT(__first <= __last, "string::erase(first, last) called with invalid range");
iterator __b = begin();
size_type __r = static_cast<size_type>(__first - __b);
erase(__r, static_cast<size_type>(__last - __first));
return __b + static_cast<difference_type>(__r);
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::pop_back()
{
_LIBCPP_ASSERT(!empty(), "string::pop_back(): string is already empty");
__erase_to_end(size() - 1);
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::clear() _NOEXCEPT
{
std::__debug_db_invalidate_all(this);
if (__is_long())
{
traits_type::assign(*__get_long_pointer(), value_type());
__set_long_size(0);
}
else
{
traits_type::assign(*__get_short_pointer(), value_type());
__set_short_size(0);
}
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::resize(size_type __n, value_type __c)
{
size_type __sz = size();
if (__n > __sz)
append(__n - __sz, __c);
else
__erase_to_end(__n);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20 inline void
basic_string<_CharT, _Traits, _Allocator>::__resize_default_init(size_type __n)
{
size_type __sz = size();
if (__n > __sz) {
__append_default_init(__n - __sz);
} else
__erase_to_end(__n);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::reserve(size_type __requested_capacity)
{
if (__requested_capacity > max_size())
__throw_length_error();
// Make sure reserve(n) never shrinks. This is technically only required in C++20
// and later (since P0966R1), however we provide consistent behavior in all Standard
// modes because this function is instantiated in the shared library.
if (__requested_capacity <= capacity())
return;
size_type __target_capacity = std::max(__requested_capacity, size());
__target_capacity = __recommend(__target_capacity);
if (__target_capacity == capacity()) return;
__shrink_or_extend(__target_capacity);
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::shrink_to_fit() _NOEXCEPT
{
size_type __target_capacity = __recommend(size());
if (__target_capacity == capacity()) return;
__shrink_or_extend(__target_capacity);
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__shrink_or_extend(size_type __target_capacity)
{
size_type __cap = capacity();
size_type __sz = size();
pointer __new_data, __p;
bool __was_long, __now_long;
if (__fits_in_sso(__target_capacity))
{
__was_long = true;
__now_long = false;
__new_data = __get_short_pointer();
__p = __get_long_pointer();
}
else
{
if (__target_capacity > __cap) {
auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1);
__new_data = __allocation.ptr;
__target_capacity = __allocation.count - 1;
}
else
{
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
auto __allocation = std::__allocate_at_least(__alloc(), __target_capacity + 1);
__new_data = __allocation.ptr;
__target_capacity = __allocation.count - 1;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
}
catch (...)
{
return;
}
#else // _LIBCPP_HAS_NO_EXCEPTIONS
if (__new_data == nullptr)
return;
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
}
__begin_lifetime(__new_data, __target_capacity + 1);
__now_long = true;
__was_long = __is_long();
__p = __get_pointer();
}
traits_type::copy(std::__to_address(__new_data),
std::__to_address(__p), size()+1);
if (__was_long)
__alloc_traits::deallocate(__alloc(), __p, __cap+1);
if (__now_long)
{
__set_long_cap(__target_capacity+1);
__set_long_size(__sz);
__set_long_pointer(__new_data);
}
else
__set_short_size(__sz);
std::__debug_db_invalidate_all(this);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::const_reference
basic_string<_CharT, _Traits, _Allocator>::at(size_type __n) const
{
if (__n >= size())
__throw_out_of_range();
return (*this)[__n];
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::reference
basic_string<_CharT, _Traits, _Allocator>::at(size_type __n)
{
if (__n >= size())
__throw_out_of_range();
return (*this)[__n];
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::copy(value_type* __s, size_type __n, size_type __pos) const
{
size_type __sz = size();
if (__pos > __sz)
__throw_out_of_range();
size_type __rlen = std::min(__n, __sz - __pos);
traits_type::copy(__s, data() + __pos, __rlen);
return __rlen;
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::swap(basic_string& __str)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT
#else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value)
#endif
{
if (!__is_long())
std::__debug_db_invalidate_all(this);
if (!__str.__is_long())
std::__debug_db_invalidate_all(&__str);
std::__debug_db_swap(this, &__str);
_LIBCPP_ASSERT(
__alloc_traits::propagate_on_container_swap::value ||
__alloc_traits::is_always_equal::value ||
__alloc() == __str.__alloc(), "swapping non-equal allocators");
std::swap(__r_.first(), __str.__r_.first());
std::__swap_allocator(__alloc(), __str.__alloc());
}
// find
template <class _Traits>
struct _LIBCPP_HIDDEN __traits_eq
{
typedef typename _Traits::char_type char_type;
_LIBCPP_HIDE_FROM_ABI
bool operator()(const char_type& __x, const char_type& __y) _NOEXCEPT
{return _Traits::eq(__x, __y);}
};
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find(): received nullptr");
return std::__str_find<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_find<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find(const _Tp &__t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_find<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::find(): received nullptr");
return std::__str_find<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find(value_type __c,
size_type __pos) const _NOEXCEPT
{
return std::__str_find<value_type, size_type, traits_type, npos>
(data(), size(), __c, __pos);
}
// rfind
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::rfind(): received nullptr");
return std::__str_rfind<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::rfind(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_rfind<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::rfind(const _Tp& __t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_rfind<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::rfind(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::rfind(): received nullptr");
return std::__str_rfind<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::rfind(value_type __c,
size_type __pos) const _NOEXCEPT
{
return std::__str_rfind<value_type, size_type, traits_type, npos>
(data(), size(), __c, __pos);
}
// find_first_of
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_of(): received nullptr");
return std::__str_find_first_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_of(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_first_of<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_of(const _Tp& __t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_find_first_of<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_of(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::find_first_of(): received nullptr");
return std::__str_find_first_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_of(value_type __c,
size_type __pos) const _NOEXCEPT
{
return find(__c, __pos);
}
// find_last_of
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_of(): received nullptr");
return std::__str_find_last_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_of(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_last_of<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_of(const _Tp& __t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_find_last_of<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_of(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::find_last_of(): received nullptr");
return std::__str_find_last_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_of(value_type __c,
size_type __pos) const _NOEXCEPT
{
return rfind(__c, __pos);
}
// find_first_not_of
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_first_not_of(): received nullptr");
return std::__str_find_first_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_first_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const _Tp& __t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_find_first_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::find_first_not_of(): received nullptr");
return std::__str_find_first_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_first_not_of(value_type __c,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_first_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __c, __pos);
}
// find_last_not_of
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
size_type __pos,
size_type __n) const _NOEXCEPT
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string::find_last_not_of(): received nullptr");
return std::__str_find_last_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const basic_string& __str,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_last_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __str.data(), __pos, __str.size());
}
template<class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const _Tp& __t,
size_type __pos) const _NOEXCEPT
{
__self_view __sv = __t;
return std::__str_find_last_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __sv.data(), __pos, __sv.size());
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(const value_type* __s,
size_type __pos) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::find_last_not_of(): received nullptr");
return std::__str_find_last_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, traits_type::length(__s));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::find_last_not_of(value_type __c,
size_type __pos) const _NOEXCEPT
{
return std::__str_find_last_not_of<value_type, size_type, traits_type, npos>
(data(), size(), __c, __pos);
}
// compare
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 int
basic_string<_CharT, _Traits, _Allocator>::compare(const _Tp& __t) const _NOEXCEPT
{
__self_view __sv = __t;
size_t __lhs_sz = size();
size_t __rhs_sz = __sv.size();
int __result = traits_type::compare(data(), __sv.data(),
std::min(__lhs_sz, __rhs_sz));
if (__result != 0)
return __result;
if (__lhs_sz < __rhs_sz)
return -1;
if (__lhs_sz > __rhs_sz)
return 1;
return 0;
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(const basic_string& __str) const _NOEXCEPT
{
return compare(__self_view(__str));
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
size_type __n1,
const value_type* __s,
size_type __n2) const
{
_LIBCPP_ASSERT(__n2 == 0 || __s != nullptr, "string::compare(): received nullptr");
size_type __sz = size();
if (__pos1 > __sz || __n2 == npos)
__throw_out_of_range();
size_type __rlen = std::min(__n1, __sz - __pos1);
int __r = traits_type::compare(data() + __pos1, __s, std::min(__rlen, __n2));
if (__r == 0)
{
if (__rlen < __n2)
__r = -1;
else if (__rlen > __n2)
__r = 1;
}
return __r;
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp, __enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 int
basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
size_type __n1,
const _Tp& __t) const
{
__self_view __sv = __t;
return compare(__pos1, __n1, __sv.data(), __sv.size());
}
template <class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
size_type __n1,
const basic_string& __str) const
{
return compare(__pos1, __n1, __str.data(), __str.size());
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Tp,
__enable_if_t<__can_be_converted_to_string_view<_CharT, _Traits, _Tp>::value &&
!__is_same_uncvref<_Tp, basic_string<_CharT, _Traits, _Allocator> >::value,
int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 int basic_string<_CharT, _Traits, _Allocator>::compare(
size_type __pos1, size_type __n1, const _Tp& __t, size_type __pos2, size_type __n2) const {
__self_view __sv = __t;
return __self_view(*this).substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
size_type __n1,
const basic_string& __str,
size_type __pos2,
size_type __n2) const
{
return compare(__pos1, __n1, __self_view(__str), __pos2, __n2);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(const value_type* __s) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
return compare(0, npos, __s, traits_type::length(__s));
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20
int
basic_string<_CharT, _Traits, _Allocator>::compare(size_type __pos1,
size_type __n1,
const value_type* __s) const
{
_LIBCPP_ASSERT(__s != nullptr, "string::compare(): received nullptr");
return compare(__pos1, __n1, __s, traits_type::length(__s));
}
// __invariants
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
bool
basic_string<_CharT, _Traits, _Allocator>::__invariants() const
{
if (size() > capacity())
return false;
if (capacity() < __min_cap - 1)
return false;
if (data() == nullptr)
return false;
if (!_Traits::eq(data()[size()], value_type()))
return false;
return true;
}
// __clear_and_shrink
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
void
basic_string<_CharT, _Traits, _Allocator>::__clear_and_shrink() _NOEXCEPT
{
clear();
if(__is_long())
{
__alloc_traits::deallocate(__alloc(), __get_long_pointer(), capacity() + 1);
__default_init();
}
}
// operator==
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
bool
operator==(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
#if _LIBCPP_STD_VER >= 20
return basic_string_view<_CharT, _Traits>(__lhs) == basic_string_view<_CharT, _Traits>(__rhs);
#else
size_t __lhs_sz = __lhs.size();
return __lhs_sz == __rhs.size() && _Traits::compare(__lhs.data(),
__rhs.data(),
__lhs_sz) == 0;
#endif
}
template<class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
bool
operator==(const basic_string<char, char_traits<char>, _Allocator>& __lhs,
const basic_string<char, char_traits<char>, _Allocator>& __rhs) _NOEXCEPT
{
size_t __lhs_sz = __lhs.size();
if (__lhs_sz != __rhs.size())
return false;
const char* __lp = __lhs.data();
const char* __rp = __rhs.data();
if (__lhs.__is_long())
return char_traits<char>::compare(__lp, __rp, __lhs_sz) == 0;
for (; __lhs_sz != 0; --__lhs_sz, ++__lp, ++__rp)
if (*__lp != *__rp)
return false;
return true;
}
#if _LIBCPP_STD_VER <= 17
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator==(const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
typedef basic_string<_CharT, _Traits, _Allocator> _String;
_LIBCPP_ASSERT(__lhs != nullptr, "operator==(char*, basic_string): received nullptr");
size_t __lhs_len = _Traits::length(__lhs);
if (__lhs_len != __rhs.size()) return false;
return __rhs.compare(0, _String::npos, __lhs, __lhs_len) == 0;
}
#endif // _LIBCPP_STD_VER <= 17
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
bool
operator==(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
#if _LIBCPP_STD_VER >= 20
return basic_string_view<_CharT, _Traits>(__lhs) == basic_string_view<_CharT, _Traits>(__rhs);
#else
typedef basic_string<_CharT, _Traits, _Allocator> _String;
_LIBCPP_ASSERT(__rhs != nullptr, "operator==(basic_string, char*): received nullptr");
size_t __rhs_len = _Traits::length(__rhs);
if (__rhs_len != __lhs.size()) return false;
return __lhs.compare(0, _String::npos, __rhs, __rhs_len) == 0;
#endif
}
#if _LIBCPP_STD_VER >= 20
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr auto operator<=>(
const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) noexcept {
return basic_string_view<_CharT, _Traits>(__lhs) <=> basic_string_view<_CharT, _Traits>(__rhs);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr auto
operator<=>(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs) {
return basic_string_view<_CharT, _Traits>(__lhs) <=> basic_string_view<_CharT, _Traits>(__rhs);
}
#else // _LIBCPP_STD_VER >= 20
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator!=(const basic_string<_CharT,_Traits,_Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__lhs == __rhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator!=(const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__lhs == __rhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator!=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
return !(__lhs == __rhs);
}
// operator<
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return __lhs.compare(__rhs) < 0;
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator< (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
return __lhs.compare(__rhs) < 0;
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator< (const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return __rhs.compare(__lhs) > 0;
}
// operator>
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return __rhs < __lhs;
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator> (const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
return __rhs < __lhs;
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator> (const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return __rhs < __lhs;
}
// operator<=
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__rhs < __lhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator<=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
return !(__rhs < __lhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator<=(const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__rhs < __lhs);
}
// operator>=
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__lhs < __rhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator>=(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const _CharT* __rhs) _NOEXCEPT
{
return !(__lhs < __rhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
bool
operator>=(const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs) _NOEXCEPT
{
return !(__lhs < __rhs);
}
#endif // _LIBCPP_STD_VER >= 20
// operator +
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs)
{
using _String = basic_string<_CharT, _Traits, _Allocator>;
auto __lhs_sz = __lhs.size();
auto __rhs_sz = __rhs.size();
_String __r(__uninitialized_size_tag(),
__lhs_sz + __rhs_sz,
_String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator()));
auto __ptr = std::__to_address(__r.__get_pointer());
_Traits::copy(__ptr, __lhs.data(), __lhs_sz);
_Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz);
_Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT());
return __r;
}
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDDEN _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const _CharT* __lhs , const basic_string<_CharT,_Traits,_Allocator>& __rhs)
{
using _String = basic_string<_CharT, _Traits, _Allocator>;
auto __lhs_sz = _Traits::length(__lhs);
auto __rhs_sz = __rhs.size();
_String __r(__uninitialized_size_tag(),
__lhs_sz + __rhs_sz,
_String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator()));
auto __ptr = std::__to_address(__r.__get_pointer());
_Traits::copy(__ptr, __lhs, __lhs_sz);
_Traits::copy(__ptr + __lhs_sz, __rhs.data(), __rhs_sz);
_Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT());
return __r;
}
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Allocator>& __rhs)
{
using _String = basic_string<_CharT, _Traits, _Allocator>;
typename _String::size_type __rhs_sz = __rhs.size();
_String __r(__uninitialized_size_tag(),
__rhs_sz + 1,
_String::__alloc_traits::select_on_container_copy_construction(__rhs.get_allocator()));
auto __ptr = std::__to_address(__r.__get_pointer());
_Traits::assign(__ptr, 1, __lhs);
_Traits::copy(__ptr + 1, __rhs.data(), __rhs_sz);
_Traits::assign(__ptr + 1 + __rhs_sz, 1, _CharT());
return __r;
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, const _CharT* __rhs)
{
using _String = basic_string<_CharT, _Traits, _Allocator>;
typename _String::size_type __lhs_sz = __lhs.size();
typename _String::size_type __rhs_sz = _Traits::length(__rhs);
_String __r(__uninitialized_size_tag(),
__lhs_sz + __rhs_sz,
_String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator()));
auto __ptr = std::__to_address(__r.__get_pointer());
_Traits::copy(__ptr, __lhs.data(), __lhs_sz);
_Traits::copy(__ptr + __lhs_sz, __rhs, __rhs_sz);
_Traits::assign(__ptr + __lhs_sz + __rhs_sz, 1, _CharT());
return __r;
}
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs)
{
using _String = basic_string<_CharT, _Traits, _Allocator>;
typename _String::size_type __lhs_sz = __lhs.size();
_String __r(__uninitialized_size_tag(),
__lhs_sz + 1,
_String::__alloc_traits::select_on_container_copy_construction(__lhs.get_allocator()));
auto __ptr = std::__to_address(__r.__get_pointer());
_Traits::copy(__ptr, __lhs.data(), __lhs_sz);
_Traits::assign(__ptr + __lhs_sz, 1, __rhs);
_Traits::assign(__ptr + 1 + __lhs_sz, 1, _CharT());
return __r;
}
#ifndef _LIBCPP_CXX03_LANG
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const basic_string<_CharT, _Traits, _Allocator>& __rhs)
{
return std::move(__lhs.append(__rhs));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
{
return std::move(__rhs.insert(0, __lhs));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs)
{
return std::move(__lhs.append(__rhs));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(const _CharT* __lhs , basic_string<_CharT,_Traits,_Allocator>&& __rhs)
{
return std::move(__rhs.insert(0, __lhs));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(_CharT __lhs, basic_string<_CharT,_Traits,_Allocator>&& __rhs)
{
__rhs.insert(__rhs.begin(), __lhs);
return std::move(__rhs);
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, const _CharT* __rhs)
{
return std::move(__lhs.append(__rhs));
}
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<_CharT, _Traits, _Allocator>
operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs)
{
__lhs.push_back(__rhs);
return std::move(__lhs);
}
#endif // _LIBCPP_CXX03_LANG
// swap
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
void
swap(basic_string<_CharT, _Traits, _Allocator>& __lhs,
basic_string<_CharT, _Traits, _Allocator>& __rhs)
_NOEXCEPT_(_NOEXCEPT_(__lhs.swap(__rhs)))
{
__lhs.swap(__rhs);
}
_LIBCPP_FUNC_VIS int stoi (const string& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS long stol (const string& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS unsigned long stoul (const string& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS long long stoll (const string& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS unsigned long long stoull(const string& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS float stof (const string& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS double stod (const string& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS long double stold(const string& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS string to_string(int __val);
_LIBCPP_FUNC_VIS string to_string(unsigned __val);
_LIBCPP_FUNC_VIS string to_string(long __val);
_LIBCPP_FUNC_VIS string to_string(unsigned long __val);
_LIBCPP_FUNC_VIS string to_string(long long __val);
_LIBCPP_FUNC_VIS string to_string(unsigned long long __val);
_LIBCPP_FUNC_VIS string to_string(float __val);
_LIBCPP_FUNC_VIS string to_string(double __val);
_LIBCPP_FUNC_VIS string to_string(long double __val);
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_FUNC_VIS int stoi (const wstring& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS long stol (const wstring& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS unsigned long stoul (const wstring& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS long long stoll (const wstring& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS unsigned long long stoull(const wstring& __str, size_t* __idx = nullptr, int __base = 10);
_LIBCPP_FUNC_VIS float stof (const wstring& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS double stod (const wstring& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS long double stold(const wstring& __str, size_t* __idx = nullptr);
_LIBCPP_FUNC_VIS wstring to_wstring(int __val);
_LIBCPP_FUNC_VIS wstring to_wstring(unsigned __val);
_LIBCPP_FUNC_VIS wstring to_wstring(long __val);
_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long __val);
_LIBCPP_FUNC_VIS wstring to_wstring(long long __val);
_LIBCPP_FUNC_VIS wstring to_wstring(unsigned long long __val);
_LIBCPP_FUNC_VIS wstring to_wstring(float __val);
_LIBCPP_FUNC_VIS wstring to_wstring(double __val);
_LIBCPP_FUNC_VIS wstring to_wstring(long double __val);
#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_TEMPLATE_DATA_VIS
const typename basic_string<_CharT, _Traits, _Allocator>::size_type
basic_string<_CharT, _Traits, _Allocator>::npos;
template <class _CharT, class _Allocator>
struct __string_hash : public __unary_function<basic_string<_CharT, char_traits<_CharT>, _Allocator>, size_t> {
_LIBCPP_HIDE_FROM_ABI size_t
operator()(const basic_string<_CharT, char_traits<_CharT>, _Allocator>& __val) const _NOEXCEPT {
return std::__do_string_hash(__val.data(), __val.data() + __val.size());
}
};
template <class _Allocator>
struct hash<basic_string<char, char_traits<char>, _Allocator> > : __string_hash<char, _Allocator> {};
#ifndef _LIBCPP_HAS_NO_CHAR8_T
template <class _Allocator>
struct hash<basic_string<char8_t, char_traits<char8_t>, _Allocator> > : __string_hash<char8_t, _Allocator> {};
#endif
template <class _Allocator>
struct hash<basic_string<char16_t, char_traits<char16_t>, _Allocator> > : __string_hash<char16_t, _Allocator> {};
template <class _Allocator>
struct hash<basic_string<char32_t, char_traits<char32_t>, _Allocator> > : __string_hash<char32_t, _Allocator> {};
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class _Allocator>
struct hash<basic_string<wchar_t, char_traits<wchar_t>, _Allocator> > : __string_hash<wchar_t, _Allocator> {};
#endif
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,
const basic_string<_CharT, _Traits, _Allocator>& __str);
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is,
basic_string<_CharT, _Traits, _Allocator>& __str);
template<class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT, _Traits>& __is,
basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT, _Traits>& __is,
basic_string<_CharT, _Traits, _Allocator>& __str);
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT, _Traits>&& __is,
basic_string<_CharT, _Traits, _Allocator>& __str, _CharT __dlm);
template<class _CharT, class _Traits, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI
basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT, _Traits>&& __is,
basic_string<_CharT, _Traits, _Allocator>& __str);
#if _LIBCPP_STD_VER >= 20
template <class _CharT, class _Traits, class _Allocator, class _Up>
inline _LIBCPP_HIDE_FROM_ABI
typename basic_string<_CharT, _Traits, _Allocator>::size_type
erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v) {
auto __old_size = __str.size();
__str.erase(std::remove(__str.begin(), __str.end(), __v), __str.end());
return __old_size - __str.size();
}
template <class _CharT, class _Traits, class _Allocator, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI
typename basic_string<_CharT, _Traits, _Allocator>::size_type
erase_if(basic_string<_CharT, _Traits, _Allocator>& __str,
_Predicate __pred) {
auto __old_size = __str.size();
__str.erase(std::remove_if(__str.begin(), __str.end(), __pred),
__str.end());
return __old_size - __str.size();
}
#endif
#ifdef _LIBCPP_ENABLE_DEBUG_MODE
template<class _CharT, class _Traits, class _Allocator>
bool
basic_string<_CharT, _Traits, _Allocator>::__dereferenceable(const const_iterator* __i) const
{
return data() <= std::__to_address(__i->base()) &&
std::__to_address(__i->base()) < data() + size();
}
template<class _CharT, class _Traits, class _Allocator>
bool
basic_string<_CharT, _Traits, _Allocator>::__decrementable(const const_iterator* __i) const
{
return data() < std::__to_address(__i->base()) &&
std::__to_address(__i->base()) <= data() + size();
}
template<class _CharT, class _Traits, class _Allocator>
bool
basic_string<_CharT, _Traits, _Allocator>::__addable(const const_iterator* __i, ptrdiff_t __n) const
{
const value_type* __p = std::__to_address(__i->base()) + __n;
return data() <= __p && __p <= data() + size();
}
template<class _CharT, class _Traits, class _Allocator>
bool
basic_string<_CharT, _Traits, _Allocator>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const
{
const value_type* __p = std::__to_address(__i->base()) + __n;
return data() <= __p && __p < data() + size();
}
#endif // _LIBCPP_ENABLE_DEBUG_MODE
#if _LIBCPP_STD_VER >= 14
// Literal suffixes for basic_string [basic.string.literals]
inline namespace literals
{
inline namespace string_literals
{
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<char> operator "" s( const char *__str, size_t __len )
{
return basic_string<char> (__str, __len);
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len )
{
return basic_string<wchar_t> (__str, __len);
}
#endif
#ifndef _LIBCPP_HAS_NO_CHAR8_T
inline _LIBCPP_HIDE_FROM_ABI constexpr
basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len)
{
return basic_string<char8_t> (__str, __len);
}
#endif
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len )
{
return basic_string<char16_t> (__str, __len);
}
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len )
{
return basic_string<char32_t> (__str, __len);
}
} // namespace string_literals
} // namespace literals
#if _LIBCPP_STD_VER >= 20
template <>
inline constexpr bool __format::__enable_insertable<std::basic_string<char>> = true;
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <>
inline constexpr bool __format::__enable_insertable<std::basic_string<wchar_t>> = true;
#endif
#endif
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <algorithm>
# include <concepts>
# include <cstdlib>
# include <functional>
# include <iterator>
# include <new>
# include <type_traits>
# include <typeinfo>
# include <utility>
# include <vector>
#endif
#endif // _LIBCPP_STRING