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llvm / llvm-project / libcxx / c1dd71c8a5561eb491fcd5fb1f18887dee8cd2b1 / . / include / string
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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
// clang-format off
/*
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++23
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
template<container-compatible-range<charT> R>
constexpr basic_string(from_range_t, R&& rg, const Allocator& a = Allocator()); // since C++23
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++23
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, removed in C++26
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
template<container-compatible-range<charT> R>
constexpr basic_string& append_range(R&& rg); // C++23
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
template<container-compatible-range<charT> R>
constexpr basic_string& assign_range(R&& rg); // C++23
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
template<container-compatible-range<charT> R>
constexpr iterator insert_range(const_iterator p, R&& rg); // C++23
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
template<container-compatible-range<charT> R>
constexpr basic_string& replace_with_range(const_iterator i1, const_iterator i2, R&& rg); // C++23
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++23
constexpr bool contains(charT c) const noexcept; // C++23
constexpr bool contains(const charT* s) const; // C++23
};
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<ranges::input_range R,
class Allocator = allocator<ranges::range_value_t<R>>>
basic_string(from_range_t, R&&, Allocator = Allocator())
-> basic_string<ranges::range_value_t<R>, char_traits<ranges::range_value_t<R>>,
Allocator>; // C++23
template<class charT,
class traits,
class Allocator = allocator<charT>>
explicit basic_string(basic_string_view<charT, traits>, const Allocator& = Allocator())
-> basic_string<charT, traits, Allocator>; // C++17
template<class charT,
class traits,
class Allocator = allocator<charT>>
basic_string(basic_string_view<charT, traits>,
typename see below::size_type, typename see below::size_type,
const Allocator& = Allocator())
-> basic_string<charT, traits, 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>
constexpr basic_string<charT, traits, Allocator>
operator+(const basic_string<charT, traits, Allocator>& lhs,
type_identity_t<basic_string_view<charT, traits>> rhs); // Since C++26
template<class charT, class traits, class Allocator>
constexpr basic_string<charT, traits, Allocator>
operator+(basic_string<charT, traits, Allocator>&& lhs,
type_identity_t<basic_string_view<charT, traits>> rhs); // Since C++26
template<class charT, class traits, class Allocator>
constexpr basic_string<charT, traits, Allocator>
operator+(type_identity_t<basic_string_view<charT, traits>> lhs,
const basic_string<charT, traits, Allocator>& rhs); // Since C++26
template<class charT, class traits, class Allocator>
constexpr basic_string<charT, traits, Allocator>
operator+(type_identity_t<basic_string_view<charT, traits>> lhs,
basic_string<charT, traits, Allocator>&& rhs); // Since C++26
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
*/
// clang-format on
#include <__algorithm/max.h>
#include <__algorithm/min.h>
#include <__algorithm/remove.h>
#include <__algorithm/remove_if.h>
#include <__assert>
#include <__config>
#include <__debug_utils/sanitizers.h>
#include <__format/enable_insertable.h>
#include <__functional/hash.h>
#include <__functional/unary_function.h>
#include <__fwd/string.h>
#include <__ios/fpos.h>
#include <__iterator/bounded_iter.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 <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__ranges/size.h>
#include <__string/char_traits.h>
#include <__string/extern_template_lists.h>
#include <__type_traits/conditional.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_array.h>
#include <__type_traits/is_convertible.h>
#include <__type_traits/is_nothrow_assignable.h>
#include <__type_traits/is_nothrow_constructible.h>
#include <__type_traits/is_same.h>
#include <__type_traits/is_standard_layout.h>
#include <__type_traits/is_trivial.h>
#include <__type_traits/is_trivially_relocatable.h>
#include <__type_traits/noexcept_move_assign_container.h>
#include <__type_traits/remove_cvref.h>
#include <__type_traits/void_t.h>
#include <__utility/auto_cast.h>
#include <__utility/declval.h>
#include <__utility/forward.h>
#include <__utility/is_pointer_in_range.h>
#include <__utility/move.h>
#include <__utility/swap.h>
#include <__utility/unreachable.h>
#include <climits>
#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>
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
# define _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS __attribute__((__no_sanitize__("address")))
// This macro disables AddressSanitizer (ASan) instrumentation for a specific function,
// allowing memory accesses that would normally trigger ASan errors to proceed without crashing.
// This is useful for accessing parts of objects memory, which should not be accessed,
// such as unused bytes in short strings, that should never be accessed
// by other parts of the program.
#else
# define _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS
#endif
_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);
#if _LIBCPP_STD_VER >= 26
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string<_CharT, _Traits, _Allocator>
operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs,
type_identity_t<basic_string_view<_CharT, _Traits>> __rhs);
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string<_CharT, _Traits, _Allocator>
operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, type_identity_t<basic_string_view<_CharT, _Traits>> __rhs);
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string<_CharT, _Traits, _Allocator>
operator+(type_identity_t<basic_string_view<_CharT, _Traits>> __lhs,
const basic_string<_CharT, _Traits, _Allocator>& __rhs);
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string<_CharT, _Traits, _Allocator>
operator+(type_identity_t<basic_string_view<_CharT, _Traits>> __lhs, basic_string<_CharT, _Traits, _Allocator>&& __rhs);
#endif
extern template _LIBCPP_EXPORTED_FROM_ABI 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 {};
struct __init_with_sentinel_tag {};
template <class _CharT, class _Traits, class _Allocator>
class basic_string {
private:
using __default_allocator_type = allocator<_CharT>;
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;
// A basic_string contains the following members which may be trivially relocatable:
// - pointer: is currently assumed to be trivially relocatable, but is still checked in case that changes
// - size_type: is always trivially relocatable, since it has to be an integral type
// - value_type: is always trivially relocatable, since it has to be trivial
// - unsigned char: is a fundamental type, so it's trivially relocatable
// - allocator_type: may or may not be trivially relocatable, so it's checked
//
// This string implementation doesn't contain any references into itself. It only contains a bit that says whether
// it is in small or large string mode, so the entire structure is trivially relocatable if its members are.
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
// When compiling with AddressSanitizer (ASan), basic_string cannot be trivially
// relocatable. Because the object's memory might be poisoned when its content
// is kept inside objects memory (short string optimization), instead of in allocated
// external memory. In such cases, the destructor is responsible for unpoisoning
// the memory to avoid triggering false positives.
// Therefore it's crucial to ensure the destructor is called.
using __trivially_relocatable = void;
#else
using __trivially_relocatable = __conditional_t<
__libcpp_is_trivially_relocatable<allocator_type>::value && __libcpp_is_trivially_relocatable<pointer>::value,
basic_string,
void>;
#endif
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pointer __asan_volatile_wrapper(pointer const& __ptr) const {
if (__libcpp_is_constant_evaluated())
return __ptr;
pointer volatile __copy_ptr = __ptr;
return const_cast<pointer&>(__copy_ptr);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_pointer
__asan_volatile_wrapper(const_pointer const& __ptr) const {
if (__libcpp_is_constant_evaluated())
return __ptr;
const_pointer volatile __copy_ptr = __ptr;
return const_cast<const_pointer&>(__copy_ptr);
}
# define _LIBCPP_ASAN_VOLATILE_WRAPPER(PTR) __asan_volatile_wrapper(PTR)
#else
# define _LIBCPP_ASAN_VOLATILE_WRAPPER(PTR) PTR
#endif
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(__check_valid_allocator<allocator_type>::value, "");
#ifdef _LIBCPP_ABI_BOUNDED_ITERATORS_IN_STRING
// Users might provide custom allocators, and prior to C++20 we have no existing way to detect whether the allocator's
// pointer type is contiguous (though it has to be by the Standard). Using the wrapper type ensures the iterator is
// considered contiguous.
typedef __bounded_iter<__wrap_iter<pointer>> iterator;
typedef __bounded_iter<__wrap_iter<const_pointer>> const_iterator;
#else
typedef __wrap_iter<pointer> iterator;
typedef __wrap_iter<const_pointer> const_iterator;
#endif
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 __rep {
__short __s;
__long __l;
};
__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);
}
__annotate_new(__size);
}
template <class _Iter, class _Sent>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
basic_string(__init_with_sentinel_tag, _Iter __first, _Sent __last, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
__init_with_sentinel(std::move(__first), std::move(__last));
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator __make_iterator(pointer __p) {
#ifdef _LIBCPP_ABI_BOUNDED_ITERATORS_IN_STRING
// Bound the iterator according to the size (and not the capacity, unlike vector).
//
// By the Standard, string iterators are generally not guaranteed to stay valid when the container is modified,
// regardless of whether reallocation occurs. This allows us to check for out-of-bounds accesses using logical size,
// a stricter check, since correct code can never rely on being able to access newly-added elements via an existing
// iterator.
return std::__make_bounded_iter(
std::__wrap_iter<pointer>(__p),
std::__wrap_iter<pointer>(__get_pointer()),
std::__wrap_iter<pointer>(__get_pointer() + size()));
#else
return iterator(__p);
#endif // _LIBCPP_ABI_BOUNDED_ITERATORS_IN_STRING
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_iterator __make_const_iterator(const_pointer __p) const {
#ifdef _LIBCPP_ABI_BOUNDED_ITERATORS_IN_STRING
// Bound the iterator according to the size (and not the capacity, unlike vector).
return std::__make_bounded_iter(
std::__wrap_iter<const_pointer>(__p),
std::__wrap_iter<const_pointer>(__get_pointer()),
std::__wrap_iter<const_pointer>(__get_pointer() + size()));
#else
return const_iterator(__p);
#endif // _LIBCPP_ABI_BOUNDED_ITERATORS_IN_STRING
}
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_(__value_init_tag(), __default_init_tag()) {
__annotate_new(0);
}
_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_(__value_init_tag(), __a) {
__annotate_new(0);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS 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();
__annotate_new(__get_short_size());
} else
__init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS
basic_string(const basic_string& __str, const allocator_type& __a)
: __r_(__default_init_tag(), __a) {
if (!__str.__is_long()) {
__r_.first() = __str.__r_.first();
__annotate_new(__get_short_size());
} else
__init_copy_ctor_external(std::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
}
#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
// Turning off ASan instrumentation for variable initialization with _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS
// does not work consistently during initialization of __r_, so we instead unpoison __str's memory manually first.
// __str's memory needs to be unpoisoned only in the case where it's a short string.
: __r_([](basic_string& __s) -> decltype(__s.__r_)&& {
if (!__s.__is_long())
__s.__annotate_delete();
return std::move(__s.__r_);
}(__str)) {
__str.__r_.first() = __rep();
__str.__annotate_new(0);
if (!__is_long())
__annotate_new(size());
}
_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();
if (!__str.__is_long())
__str.__annotate_delete();
__r_.first() = __str.__r_.first();
__str.__r_.first() = __rep();
__str.__annotate_new(0);
if (!__is_long() && this != &__str)
__annotate_new(size());
}
}
#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_NON_NULL(__s != nullptr, "basic_string(const char*) detected nullptr");
__init(__s, traits_type::length(__s));
}
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_NON_NULL(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
__init(__s, traits_type::length(__s));
}
#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_NON_NULL(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
__init(__s, __n);
}
_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_NON_NULL(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
__init(__s, __n);
}
_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);
}
#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()) {
__move_assign(std::move(__str), __pos, __len);
} else {
// Perform a copy because the allocators are not compatible.
__init(__str.data() + __pos, __len);
}
}
#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);
}
_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));
}
_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);
}
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());
}
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());
}
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());
}
template <class _InputIterator, __enable_if_t<__has_input_iterator_category<_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);
}
template <class _InputIterator, __enable_if_t<__has_input_iterator_category<_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);
}
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_CharT> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string(
from_range_t, _Range&& __range, const allocator_type& __a = allocator_type())
: __r_(__default_init_tag(), __a) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
__init_with_size(ranges::begin(__range), ranges::end(__range), ranges::distance(__range));
} else {
__init_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
}
#endif
#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());
}
_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());
}
#endif // _LIBCPP_CXX03_LANG
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 ~basic_string() {
__annotate_delete();
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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS 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);
#if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRING_RESERVE)
_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void reserve() _NOEXCEPT { shrink_to_fit(); }
#endif
_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 _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_VALID_ELEMENT_ACCESS(__pos <= size(), "string index out of bounds");
if (__builtin_constant_p(__pos) && !__fits_in_sso(__pos)) {
return *(__get_long_pointer() + __pos);
}
return *(data() + __pos);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](size_type __pos) _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__pos <= size(), "string index out of bounds");
if (__builtin_constant_p(__pos) && !__fits_in_sso(__pos)) {
return *(__get_long_pointer() + __pos);
}
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<__has_exactly_input_iterator_category<_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<__has_forward_iterator_category<_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);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_CharT> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string& append_range(_Range&& __range) {
insert_range(end(), std::forward<_Range>(__range));
return *this;
}
#endif
#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_VALID_ELEMENT_ACCESS(!empty(), "string::front(): string is empty");
return *__get_pointer();
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_reference front() const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "string::front(): string is empty");
return *data();
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference back() _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!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_VALID_ELEMENT_ACCESS(!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());
}
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI constexpr void __move_assign(basic_string&& __str, size_type __pos, size_type __len) {
// Pilfer the allocation from __str.
_LIBCPP_ASSERT_INTERNAL(__alloc() == __str.__alloc(), "__move_assign called with wrong allocator");
size_type __old_sz = __str.size();
if (!__str.__is_long())
__str.__annotate_delete();
__r_.first() = __str.__r_.first();
__str.__r_.first() = __rep();
__str.__annotate_new(0);
_Traits::move(data(), data() + __pos, __len);
__set_size(__len);
_Traits::assign(data()[__len], value_type());
if (!__is_long()) {
__annotate_new(__len);
} else if (__old_sz > __len) {
__annotate_shrink(__old_sz);
}
}
#endif
_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<__has_exactly_input_iterator_category<_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<__has_forward_iterator_category<_ForwardIterator>::value, int> = 0>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
assign(_ForwardIterator __first, _ForwardIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_CharT> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string& assign_range(_Range&& __range) {
if constexpr (__string_is_trivial_iterator<ranges::iterator_t<_Range>>::value &&
(ranges::forward_range<_Range> || ranges::sized_range<_Range>)) {
size_type __n = static_cast<size_type>(ranges::distance(__range));
__assign_trivial(ranges::begin(__range), ranges::end(__range), __n);
} else {
__assign_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
return *this;
}
#endif
#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);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_CharT> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr iterator insert_range(const_iterator __position, _Range&& __range) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
return __insert_with_size(__position, ranges::begin(__range), ranges::end(__range), __n);
} else {
basic_string __temp(from_range, std::forward<_Range>(__range), __alloc());
return insert(__position, __temp.data(), __temp.data() + __temp.size());
}
}
#endif
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator
insert(const_iterator __pos, size_type __n, value_type __c) {
difference_type __p = __pos - begin();
insert(static_cast<size_type>(__p), __n, __c);
return begin() + __p;
}
template <class _InputIterator, __enable_if_t<__has_exactly_input_iterator_category<_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<__has_forward_iterator_category<_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<__has_input_iterator_category<_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);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_CharT> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr basic_string&
replace_with_range(const_iterator __i1, const_iterator __i2, _Range&& __range) {
basic_string __temp(from_range, std::forward<_Range>(__range), __alloc());
return replace(__i1, __i2, __temp);
}
#endif
#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_v<allocator_type>);
#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
_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;
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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS bool
__is_long() const _NOEXCEPT {
if (__libcpp_is_constant_evaluated() && __builtin_constant_p(__r_.first().__l.__is_long_)) {
return __r_.first().__l.__is_long_;
}
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_CONSTEXPR _LIBCPP_HIDE_FROM_ABI static bool __fits_in_sso(size_type __sz) { return __sz < __min_cap; }
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__assign_trivial(_Iterator __first, _Sentinel __last, size_type __n);
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __assign_with_sentinel(_Iterator __first, _Sentinel __last);
// Copy [__first, __last) into [__dest, __dest + (__last - __first)). Assumes that the ranges don't overlap.
template <class _ForwardIter, class _Sent>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 static value_type*
__copy_non_overlapping_range(_ForwardIter __first, _Sent __last, value_type* __dest) {
#ifndef _LIBCPP_CXX03_LANG
if constexpr (__libcpp_is_contiguous_iterator<_ForwardIter>::value &&
is_same<value_type, __iter_value_type<_ForwardIter>>::value && is_same<_ForwardIter, _Sent>::value) {
traits_type::copy(__dest, std::__to_address(__first), __last - __first);
return __dest + (__last - __first);
}
#endif
for (; __first != __last; ++__first)
traits_type::assign(*__dest++, *__first);
return __dest;
}
template <class _ForwardIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 iterator
__insert_from_safe_copy(size_type __n, size_type __ip, _ForwardIterator __first, _Sentinel __last) {
size_type __sz = size();
size_type __cap = capacity();
value_type* __p;
if (__cap - __sz >= __n) {
__annotate_increase(__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_without_replace(__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());
__copy_non_overlapping_range(__first, __last, __p + __ip);
return begin() + __ip;
}
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 iterator
__insert_with_size(const_iterator __pos, _Iterator __first, _Sentinel __last, size_type __n);
_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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS void
__set_short_size(size_type __s) _NOEXCEPT {
_LIBCPP_ASSERT_INTERNAL(__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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS size_type
__get_short_size() const _NOEXCEPT {
_LIBCPP_ASSERT_INTERNAL(!__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 _LIBCPP_ASAN_VOLATILE_WRAPPER(__r_.first().__l.__data_);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 const_pointer __get_long_pointer() const _NOEXCEPT {
return _LIBCPP_ASAN_VOLATILE_WRAPPER(__r_.first().__l.__data_);
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS pointer
__get_short_pointer() _NOEXCEPT {
return _LIBCPP_ASAN_VOLATILE_WRAPPER(pointer_traits<pointer>::pointer_to(__r_.first().__s.__data_[0]));
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS const_pointer
__get_short_pointer() const _NOEXCEPT {
return _LIBCPP_ASAN_VOLATILE_WRAPPER(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();
}
// The following functions are no-ops outside of AddressSanitizer mode.
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
__annotate_contiguous_container(const void* __old_mid, const void* __new_mid) const {
(void)__old_mid;
(void)__new_mid;
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
#if defined(__APPLE__)
// TODO: remove after addressing issue #96099 (https://github.com/llvm/llvm-project/issues/96099)
if(!__is_long())
return;
#endif
std::__annotate_contiguous_container<_Allocator>(data(), data() + capacity() + 1, __old_mid, __new_mid);
#endif
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __annotate_new(size_type __current_size) const _NOEXCEPT {
(void)__current_size;
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
if (!__libcpp_is_constant_evaluated())
__annotate_contiguous_container(data() + capacity() + 1, data() + __current_size + 1);
#endif
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __annotate_delete() const _NOEXCEPT {
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
if (!__libcpp_is_constant_evaluated())
__annotate_contiguous_container(data() + size() + 1, data() + capacity() + 1);
#endif
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __annotate_increase(size_type __n) const _NOEXCEPT {
(void)__n;
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
if (!__libcpp_is_constant_evaluated())
__annotate_contiguous_container(data() + size() + 1, data() + size() + 1 + __n);
#endif
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void __annotate_shrink(size_type __old_size) const _NOEXCEPT {
(void)__old_size;
#if !defined(_LIBCPP_HAS_NO_ASAN) && defined(_LIBCPP_INSTRUMENTED_WITH_ASAN)
if (!__libcpp_is_constant_evaluated())
__annotate_contiguous_container(data() + __old_size + 1, data() + size() + 1);
#endif
}
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 = 8 };
static _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 size_type __recommend(size_type __s) _NOEXCEPT {
if (__s < __min_cap) {
return static_cast<size_type>(__min_cap) - 1;
}
const size_type __boundary = sizeof(value_type) < __alignment ? __alignment / sizeof(value_type) : __endian_factor;
size_type __guess = __align_it<__boundary>(__s + 1) - 1;
if (__guess == __min_cap)
__guess += __endian_factor;
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 _LIBCPP_NOINLINE void __init_copy_ctor_external(const value_type* __s, size_type __sz);
template <class _InputIterator, __enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value, int> = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void __init(_InputIterator __first, _InputIterator __last);
template <class _ForwardIterator, __enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value, int> = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX20 void __init(_ForwardIterator __first, _ForwardIterator __last);
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
__init_with_sentinel(_InputIterator __first, _Sentinel __last);
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
__init_with_size(_InputIterator __first, _Sentinel __last, size_type __sz);
_LIBCPP_CONSTEXPR_SINCE_CXX20
#if _LIBCPP_ABI_VERSION >= 2 // We want to use the function in the dylib in ABIv1
_LIBCPP_HIDE_FROM_ABI
#endif
_LIBCPP_DEPRECATED_("use __grow_by_without_replace") 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 _LIBCPP_HIDE_FROM_ABI void __grow_by_without_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 = 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 _LIBCPP_NOINLINE 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 _LIBCPP_NOINLINE 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 {
__annotate_delete();
allocator_type __a = __str.__alloc();
auto __allocation = std::__allocate_at_least(__a, __str.__get_long_cap());
__begin_lifetime(__allocation.ptr, __allocation.count);
if (__is_long())
__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());
__annotate_new(__get_long_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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS 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 _LIBCPP_NOINLINE basic_string& __assign_external(const value_type* __s);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_NOINLINE 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 _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string& __assign_short(const value_type* __s, size_type __n) {
size_type __old_size = size();
if (__n > __old_size)
__annotate_increase(__n - __old_size);
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());
if (__old_size > __n)
__annotate_shrink(__old_size);
return *this;
}
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string&
__null_terminate_at(value_type* __p, size_type __newsz) {
size_type __old_size = size();
if (__newsz > __old_size)
__annotate_increase(__newsz - __old_size);
__set_size(__newsz);
traits_type::assign(__p[__newsz], value_type());
if (__old_size > __newsz)
__annotate_shrink(__old_size);
return *this;
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __addr_in_range(const _Tp& __v) const {
return std::__is_pointer_in_range(data(), data() + size() + 1, std::addressof(__v));
}
_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);
#if _LIBCPP_STD_VER >= 26
friend constexpr basic_string operator+ <>(const basic_string&, type_identity_t<__self_view>);
friend constexpr basic_string operator+ <>(type_identity_t<__self_view>, const basic_string&);
#endif
template <class _CharT2, class _Traits2, class _Allocator2>
friend inline _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI bool
operator==(const basic_string<_CharT2, _Traits2, _Allocator2>&, const _CharT2*) _NOEXCEPT;
};
// 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<__has_input_iterator_category<_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
#if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Allocator = allocator<ranges::range_value_t<_Range>>,
class = enable_if_t<__is_allocator<_Allocator>::value> >
basic_string(from_range_t, _Range&&, _Allocator = _Allocator())
-> basic_string<ranges::range_value_t<_Range>, char_traits<ranges::range_value_t<_Range>>, _Allocator>;
#endif
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());
__annotate_new(__sz);
}
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());
__annotate_new(__sz);
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_NOINLINE 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);
__annotate_new(__sz);
}
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());
__annotate_new(__n);
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, __enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__init(_InputIterator __first, _InputIterator __last) {
__init_with_sentinel(std::move(__first), std::move(__last));
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__init_with_sentinel(_InputIterator __first, _Sentinel __last) {
__r_.first() = __rep();
__annotate_new(0);
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (; __first != __last; ++__first)
push_back(*__first);
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
} catch (...) {
__annotate_delete();
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<__has_forward_iterator_category<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__init(_ForwardIterator __first, _ForwardIterator __last) {
size_type __sz = static_cast<size_type>(std::distance(__first, __last));
__init_with_size(__first, __last, __sz);
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__init_with_size(_InputIterator __first, _Sentinel __last, 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);
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
auto __end = __copy_non_overlapping_range(__first, __last, std::__to_address(__p));
traits_type::assign(*__end, 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
__annotate_new(__sz);
}
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;
__annotate_delete();
auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1);
pointer __p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
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)
__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());
__annotate_new(__old_sz);
}
// __grow_by is deprecated because it does not set the size. It may not update the size when the size is changed, and it
// may also not set the size at all when the string was short initially. This leads to unpredictable size value. It is
// not removed or changed to avoid breaking the ABI.
template <class _CharT, class _Traits, class _Allocator>
void _LIBCPP_CONSTEXPR_SINCE_CXX20
#if _LIBCPP_ABI_VERSION >= 2 // We want to use the function in the dylib in ABIv1
_LIBCPP_HIDE_FROM_ABI
#endif
_LIBCPP_DEPRECATED_("use __grow_by_without_replace") 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;
__annotate_delete();
auto __allocation = std::__allocate_at_least(__alloc(), __cap + 1);
pointer __p = __allocation.ptr;
__begin_lifetime(__p, __allocation.count);
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 (__old_cap + 1 != __min_cap)
__alloc_traits::deallocate(__alloc(), __old_p, __old_cap + 1);
__set_long_pointer(__p);
__set_long_cap(__allocation.count);
}
template <class _CharT, class _Traits, class _Allocator>
void _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
basic_string<_CharT, _Traits, _Allocator>::__grow_by_without_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) {
_LIBCPP_SUPPRESS_DEPRECATED_PUSH
__grow_by(__old_cap, __delta_cap, __old_sz, __n_copy, __n_del, __n_add);
_LIBCPP_SUPPRESS_DEPRECATED_POP
__set_long_size(__old_sz - __n_del + __n_add);
__annotate_new(__old_sz - __n_del + __n_add);
}
// assign
template <class _CharT, class _Traits, class _Allocator>
template <bool __is_short>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_NOINLINE 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) {
size_type __old_size = __is_short ? __get_short_size() : __get_long_size();
if (__n > __old_size)
__annotate_increase(__n - __old_size);
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());
if (__old_size > __n)
__annotate_shrink(__old_size);
} 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 _LIBCPP_NOINLINE 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) {
size_type __old_size = size();
if (__n > __old_size)
__annotate_increase(__n - __old_size);
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_NON_NULL(__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();
size_type __old_size = size();
if (__cap < __n) {
size_type __sz = size();
__grow_by_without_replace(__cap, __n - __cap, __sz, 0, __sz);
__annotate_increase(__n);
} else if (__n > __old_size)
__annotate_increase(__n - __old_size);
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;
size_type __old_size = size();
if (__old_size == 0)
__annotate_increase(1);
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());
if (__old_size > 1)
__annotate_shrink(__old_size);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS 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()) {
size_type __old_size = __get_short_size();
if (__get_short_size() < __str.__get_short_size())
__annotate_increase(__str.__get_short_size() - __get_short_size());
__r_.first() = __str.__r_.first();
if (__old_size > __get_short_size())
__annotate_shrink(__old_size);
} 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 _LIBCPP_STRING_INTERNAL_MEMORY_ACCESS 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
{
__annotate_delete();
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());
__annotate_new(0);
}
# endif
}
size_type __str_old_size = __str.size();
bool __str_was_short = !__str.__is_long();
__move_assign_alloc(__str);
__r_.first() = __str.__r_.first();
__str.__set_short_size(0);
traits_type::assign(__str.__get_short_pointer()[0], value_type());
if (__str_was_short && this != &__str)
__str.__annotate_shrink(__str_old_size);
else
// ASan annotations: was long, so object memory is unpoisoned as new.
// Or is same as *this, and __annotate_delete() was called.
__str.__annotate_new(0);
// ASan annotations: Guard against `std::string s; s = std::move(s);`
// You can find more here: https://en.cppreference.com/w/cpp/utility/move
// Quote: "Unless otherwise specified, all standard library objects that have been moved
// from are placed in a "valid but unspecified state", meaning the object's class
// invariants hold (so functions without preconditions, such as the assignment operator,
// can be safely used on the object after it was moved from):"
// Quote: "v = std::move(v); // the value of v is unspecified"
if (!__is_long() && &__str != this)
// If it is long string, delete was never called on original __str's buffer.
__annotate_new(__get_short_size());
}
#endif
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, __enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(_InputIterator __first, _InputIterator __last) {
__assign_with_sentinel(__first, __last);
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void
basic_string<_CharT, _Traits, _Allocator>::__assign_with_sentinel(_InputIterator __first, _Sentinel __last) {
const basic_string __temp(__init_with_sentinel_tag(), std::move(__first), std::move(__last), __alloc());
assign(__temp.data(), __temp.size());
}
template <class _CharT, class _Traits, class _Allocator>
template <class _ForwardIterator, __enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value, int> >
_LIBCPP_CONSTEXPR_SINCE_CXX20 basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::assign(_ForwardIterator __first, _ForwardIterator __last) {
if (__string_is_trivial_iterator<_ForwardIterator>::value) {
size_type __n = static_cast<size_type>(std::distance(__first, __last));
__assign_trivial(__first, __last, __n);
} else {
__assign_with_sentinel(__first, __last);
}
return *this;
}
template <class _CharT, class _Traits, class _Allocator>
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
basic_string<_CharT, _Traits, _Allocator>::__assign_trivial(_Iterator __first, _Sentinel __last, size_type __n) {
_LIBCPP_ASSERT_INTERNAL(
__string_is_trivial_iterator<_Iterator>::value, "The iterator type given to `__assign_trivial` must be trivial");
size_type __old_size = size();
size_type __cap = capacity();
if (__cap < __n) {
// Unlike `append` functions, if the input range points into the string itself, there is no case that the input
// range could get invalidated by reallocation:
// 1. If the input range is a subset of the string itself, its size cannot exceed the capacity of the string,
// thus no reallocation would happen.
// 2. In the exotic case where the input range is the byte representation of the string itself, the string
// object itself stays valid even if reallocation happens.
size_type __sz = size();
__grow_by_without_replace(__cap, __n - __cap, __sz, 0, __sz);
__annotate_increase(__n);
} else if (__n > __old_size)
__annotate_increase(__n - __old_size);
pointer __p = __get_pointer();
for (; __first != __last; ++__p, (void)++__first)
traits_type::assign(*__p, *__first);
traits_type::assign(*__p, value_type());
__set_size(__n);
if (__n < __old_size)
__annotate_shrink(__old_size);
}
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