| // -*- C++ -*- |
| //===------------------------ string_view ---------------------------------===// |
| // |
| // 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_VIEW |
| #define _LIBCPP_STRING_VIEW |
| |
| /* |
| string_view synopsis |
| |
| namespace std { |
| |
| // 7.2, Class template basic_string_view |
| template<class charT, class traits = char_traits<charT>> |
| class basic_string_view; |
| |
| template<class charT, class traits> |
| inline constexpr bool ranges::enable_view<basic_string_view<charT, traits>> = true; |
| |
| template<class charT, class traits> |
| inline constexpr bool ranges::enable_borrowed_range<basic_string_view<charT, traits>> = true; // C++20 |
| |
| // 7.9, basic_string_view non-member comparison functions |
| template<class charT, class traits> |
| constexpr bool operator==(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> |
| constexpr bool operator!=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> |
| constexpr bool operator< (basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> |
| constexpr bool operator> (basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> |
| constexpr bool operator<=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> |
| constexpr bool operator>=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| // see below, sufficient additional overloads of comparison functions |
| |
| // 7.10, Inserters and extractors |
| template<class charT, class traits> |
| basic_ostream<charT, traits>& |
| operator<<(basic_ostream<charT, traits>& os, |
| basic_string_view<charT, traits> str); |
| |
| // basic_string_view typedef names |
| typedef basic_string_view<char> string_view; |
| typedef basic_string_view<char8_t> u8string_view; // C++20 |
| typedef basic_string_view<char16_t> u16string_view; |
| typedef basic_string_view<char32_t> u32string_view; |
| typedef basic_string_view<wchar_t> wstring_view; |
| |
| template<class charT, class traits = char_traits<charT>> |
| class basic_string_view { |
| public: |
| // types |
| typedef traits traits_type; |
| typedef charT value_type; |
| typedef charT* pointer; |
| typedef const charT* const_pointer; |
| typedef charT& reference; |
| typedef const charT& const_reference; |
| typedef implementation-defined const_iterator; |
| typedef const_iterator iterator; |
| typedef reverse_iterator<const_iterator> const_reverse_iterator; |
| typedef const_reverse_iterator reverse_iterator; |
| typedef size_t size_type; |
| typedef ptrdiff_t difference_type; |
| static constexpr size_type npos = size_type(-1); |
| |
| // 7.3, basic_string_view constructors and assignment operators |
| constexpr basic_string_view() noexcept; |
| constexpr basic_string_view(const basic_string_view&) noexcept = default; |
| basic_string_view& operator=(const basic_string_view&) noexcept = default; |
| template<class Allocator> |
| constexpr basic_string_view(const charT* str); |
| basic_string_view(nullptr_t) = delete; // C++2b |
| constexpr basic_string_view(const charT* str, size_type len); |
| |
| // 7.4, basic_string_view iterator support |
| constexpr const_iterator begin() const noexcept; |
| constexpr const_iterator end() const noexcept; |
| constexpr const_iterator cbegin() const noexcept; |
| constexpr const_iterator cend() const noexcept; |
| const_reverse_iterator rbegin() const noexcept; |
| const_reverse_iterator rend() const noexcept; |
| const_reverse_iterator crbegin() const noexcept; |
| const_reverse_iterator crend() const noexcept; |
| |
| // 7.5, basic_string_view capacity |
| constexpr size_type size() const noexcept; |
| constexpr size_type length() const noexcept; |
| constexpr size_type max_size() const noexcept; |
| constexpr bool empty() const noexcept; |
| |
| // 7.6, basic_string_view element access |
| constexpr const_reference operator[](size_type pos) const; |
| constexpr const_reference at(size_type pos) const; |
| constexpr const_reference front() const; |
| constexpr const_reference back() const; |
| constexpr const_pointer data() const noexcept; |
| |
| // 7.7, basic_string_view modifiers |
| constexpr void remove_prefix(size_type n); |
| constexpr void remove_suffix(size_type n); |
| constexpr void swap(basic_string_view& s) noexcept; |
| |
| size_type copy(charT* s, size_type n, size_type pos = 0) const; // constexpr in C++20 |
| |
| constexpr basic_string_view substr(size_type pos = 0, size_type n = npos) const; |
| constexpr int compare(basic_string_view s) const noexcept; |
| constexpr int compare(size_type pos1, size_type n1, basic_string_view s) const; |
| constexpr int compare(size_type pos1, size_type n1, |
| basic_string_view s, size_type pos2, size_type n2) const; |
| constexpr int compare(const charT* s) const; |
| constexpr int compare(size_type pos1, size_type n1, const charT* s) const; |
| constexpr int compare(size_type pos1, size_type n1, |
| const charT* s, size_type n2) const; |
| constexpr size_type find(basic_string_view s, size_type pos = 0) const noexcept; |
| constexpr size_type find(charT c, size_type pos = 0) const noexcept; |
| constexpr size_type find(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type find(const charT* s, size_type pos = 0) const noexcept; // noexcept as an extension |
| constexpr size_type rfind(basic_string_view s, size_type pos = npos) const noexcept; |
| constexpr size_type rfind(charT c, size_type pos = npos) const noexcept; |
| constexpr size_type rfind(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type rfind(const charT* s, size_type pos = npos) const noexcept; // noexcept as an extension |
| constexpr size_type find_first_of(basic_string_view s, size_type pos = 0) const noexcept; |
| constexpr size_type find_first_of(charT c, size_type pos = 0) const noexcept; |
| constexpr size_type find_first_of(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type find_first_of(const charT* s, size_type pos = 0) const noexcept; // noexcept as an extension |
| constexpr size_type find_last_of(basic_string_view s, size_type pos = npos) const noexcept; |
| constexpr size_type find_last_of(charT c, size_type pos = npos) const noexcept; |
| constexpr size_type find_last_of(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type find_last_of(const charT* s, size_type pos = npos) const noexcept; // noexcept as an extension |
| constexpr size_type find_first_not_of(basic_string_view s, size_type pos = 0) const noexcept; |
| constexpr size_type find_first_not_of(charT c, size_type pos = 0) const noexcept; |
| constexpr size_type find_first_not_of(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type find_first_not_of(const charT* s, size_type pos = 0) const noexcept; // noexcept as an extension |
| constexpr size_type find_last_not_of(basic_string_view s, size_type pos = npos) const noexcept; |
| constexpr size_type find_last_not_of(charT c, size_type pos = npos) const noexcept; |
| constexpr size_type find_last_not_of(const charT* s, size_type pos, size_type n) const noexcept; // noexcept as an extension |
| constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const noexcept; // noexcept as an extension |
| |
| constexpr bool starts_with(basic_string_view s) 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 s) 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 s) const noexcept; // C++2b |
| constexpr bool contains(charT c) const noexcept; // C++2b |
| constexpr bool contains(const charT* s) const; // C++2b |
| |
| private: |
| const_pointer data_; // exposition only |
| size_type size_; // exposition only |
| }; |
| |
| // 7.11, Hash support |
| template <class T> struct hash; |
| template <> struct hash<string_view>; |
| template <> struct hash<u8string_view>; // C++20 |
| template <> struct hash<u16string_view>; |
| template <> struct hash<u32string_view>; |
| template <> struct hash<wstring_view>; |
| |
| constexpr basic_string_view<char> operator "" sv( const char *str, size_t len ) noexcept; |
| constexpr basic_string_view<wchar_t> operator "" sv( const wchar_t *str, size_t len ) noexcept; |
| constexpr basic_string_view<char8_t> operator "" sv( const char8_t *str, size_t len ) noexcept; // C++20 |
| constexpr basic_string_view<char16_t> operator "" sv( const char16_t *str, size_t len ) noexcept; |
| constexpr basic_string_view<char32_t> operator "" sv( const char32_t *str, size_t len ) noexcept; |
| |
| } // namespace std |
| |
| |
| */ |
| |
| #include <__config> |
| #include <__debug> |
| #include <__ranges/enable_borrowed_range.h> |
| #include <__ranges/enable_view.h> |
| #include <__string> |
| #include <algorithm> |
| #include <compare> |
| #include <iosfwd> |
| #include <iterator> |
| #include <limits> |
| #include <stdexcept> |
| #include <version> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| template<class _CharT, class _Traits = char_traits<_CharT> > |
| class _LIBCPP_TEMPLATE_VIS basic_string_view; |
| |
| typedef basic_string_view<char> string_view; |
| #ifndef _LIBCPP_HAS_NO_CHAR8_T |
| typedef basic_string_view<char8_t> u8string_view; |
| #endif |
| typedef basic_string_view<char16_t> u16string_view; |
| typedef basic_string_view<char32_t> u32string_view; |
| typedef basic_string_view<wchar_t> wstring_view; |
| |
| template<class _CharT, class _Traits> |
| class |
| _LIBCPP_PREFERRED_NAME(string_view) |
| #ifndef _LIBCPP_HAS_NO_CHAR8_T |
| _LIBCPP_PREFERRED_NAME(u8string_view) |
| #endif |
| _LIBCPP_PREFERRED_NAME(u16string_view) |
| _LIBCPP_PREFERRED_NAME(u32string_view) |
| _LIBCPP_PREFERRED_NAME(wstring_view) |
| basic_string_view { |
| public: |
| // types |
| typedef _Traits traits_type; |
| typedef _CharT value_type; |
| typedef _CharT* pointer; |
| typedef const _CharT* const_pointer; |
| typedef _CharT& reference; |
| typedef const _CharT& const_reference; |
| typedef const_pointer const_iterator; // See [string.view.iterators] |
| typedef const_iterator iterator; |
| typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; |
| typedef const_reverse_iterator reverse_iterator; |
| typedef size_t size_type; |
| typedef ptrdiff_t difference_type; |
| static _LIBCPP_CONSTEXPR const size_type npos = -1; // size_type(-1); |
| |
| static_assert((!is_array<value_type>::value), "Character type of basic_string_view must not be an array"); |
| static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string_view must be standard-layout"); |
| static_assert(( is_trivial<value_type>::value), "Character type of basic_string_view 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"); |
| |
| // [string.view.cons], construct/copy |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| basic_string_view() _NOEXCEPT : __data (nullptr), __size(0) {} |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| basic_string_view(const basic_string_view&) _NOEXCEPT = default; |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| basic_string_view& operator=(const basic_string_view&) _NOEXCEPT = default; |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| basic_string_view(const _CharT* __s, size_type __len) _NOEXCEPT |
| : __data(__s), __size(__len) |
| { |
| #if _LIBCPP_STD_VER > 11 |
| _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): received nullptr"); |
| #endif |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| basic_string_view(const _CharT* __s) |
| : __data(__s), __size(_VSTD::__char_traits_length_checked<_Traits>(__s)) {} |
| |
| #if _LIBCPP_STD_VER > 20 |
| basic_string_view(nullptr_t) = delete; |
| #endif |
| |
| // [string.view.iterators], iterators |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_iterator begin() const _NOEXCEPT { return cbegin(); } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_iterator end() const _NOEXCEPT { return cend(); } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_iterator cbegin() const _NOEXCEPT { return __data; } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_iterator cend() const _NOEXCEPT { return __data + __size; } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); } |
| |
| // [string.view.capacity], capacity |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| size_type size() const _NOEXCEPT { return __size; } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| size_type length() const _NOEXCEPT { return __size; } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| size_type max_size() const _NOEXCEPT { return numeric_limits<size_type>::max(); } |
| |
| _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| bool empty() const _NOEXCEPT { return __size == 0; } |
| |
| // [string.view.access], element access |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_reference operator[](size_type __pos) const _NOEXCEPT { |
| return _LIBCPP_ASSERT(__pos < size(), "string_view[] index out of bounds"), __data[__pos]; |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_reference at(size_type __pos) const |
| { |
| return __pos >= size() |
| ? (__throw_out_of_range("string_view::at"), __data[0]) |
| : __data[__pos]; |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_reference front() const _NOEXCEPT |
| { |
| return _LIBCPP_ASSERT(!empty(), "string_view::front(): string is empty"), __data[0]; |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_reference back() const _NOEXCEPT |
| { |
| return _LIBCPP_ASSERT(!empty(), "string_view::back(): string is empty"), __data[__size-1]; |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_pointer data() const _NOEXCEPT { return __data; } |
| |
| // [string.view.modifiers], modifiers: |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| void remove_prefix(size_type __n) _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n <= size(), "remove_prefix() can't remove more than size()"); |
| __data += __n; |
| __size -= __n; |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| void remove_suffix(size_type __n) _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n <= size(), "remove_suffix() can't remove more than size()"); |
| __size -= __n; |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| void swap(basic_string_view& __other) _NOEXCEPT |
| { |
| const value_type *__p = __data; |
| __data = __other.__data; |
| __other.__data = __p; |
| |
| size_type __sz = __size; |
| __size = __other.__size; |
| __other.__size = __sz; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 |
| size_type copy(_CharT* __s, size_type __n, size_type __pos = 0) const |
| { |
| if (__pos > size()) |
| __throw_out_of_range("string_view::copy"); |
| size_type __rlen = _VSTD::min(__n, size() - __pos); |
| _Traits::copy(__s, data() + __pos, __rlen); |
| return __rlen; |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| basic_string_view substr(size_type __pos = 0, size_type __n = npos) const |
| { |
| return __pos > size() |
| ? (__throw_out_of_range("string_view::substr"), basic_string_view()) |
| : basic_string_view(data() + __pos, _VSTD::min(__n, size() - __pos)); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 int compare(basic_string_view __sv) const _NOEXCEPT |
| { |
| size_type __rlen = _VSTD::min( size(), __sv.size()); |
| int __retval = _Traits::compare(data(), __sv.data(), __rlen); |
| if ( __retval == 0 ) // first __rlen chars matched |
| __retval = size() == __sv.size() ? 0 : ( size() < __sv.size() ? -1 : 1 ); |
| return __retval; |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| int compare(size_type __pos1, size_type __n1, basic_string_view __sv) const |
| { |
| return substr(__pos1, __n1).compare(__sv); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| int compare( size_type __pos1, size_type __n1, |
| basic_string_view __sv, size_type __pos2, size_type __n2) const |
| { |
| return substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2)); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| int compare(const _CharT* __s) const _NOEXCEPT |
| { |
| return compare(basic_string_view(__s)); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| int compare(size_type __pos1, size_type __n1, const _CharT* __s) const |
| { |
| return substr(__pos1, __n1).compare(basic_string_view(__s)); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| int compare(size_type __pos1, size_type __n1, const _CharT* __s, size_type __n2) const |
| { |
| return substr(__pos1, __n1).compare(basic_string_view(__s, __n2)); |
| } |
| |
| // find |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): received nullptr"); |
| return __str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT |
| { |
| return __str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find(): received nullptr"); |
| return __str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find(const _CharT* __s, size_type __pos = 0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::find(): received nullptr"); |
| return __str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // rfind |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type rfind(basic_string_view __s, size_type __pos = npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): received nullptr"); |
| return __str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type rfind(_CharT __c, size_type __pos = npos) const _NOEXCEPT |
| { |
| return __str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type rfind(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::rfind(): received nullptr"); |
| return __str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type rfind(const _CharT* __s, size_type __pos=npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::rfind(): received nullptr"); |
| return __str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_first_of |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_of(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_first_of(): received nullptr"); |
| return __str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_of(_CharT __c, size_type __pos = 0) const _NOEXCEPT |
| { return find(__c, __pos); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_of(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_of(): received nullptr"); |
| return __str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_of(const _CharT* __s, size_type __pos=0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_of(): received nullptr"); |
| return __str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_last_of |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_of(basic_string_view __s, size_type __pos=npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_last_of(): received nullptr"); |
| return __str_find_last_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_of(_CharT __c, size_type __pos = npos) const _NOEXCEPT |
| { return rfind(__c, __pos); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_of(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_of(): received nullptr"); |
| return __str_find_last_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_of(const _CharT* __s, size_type __pos=npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_of(): received nullptr"); |
| return __str_find_last_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_first_not_of |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_not_of(basic_string_view __s, size_type __pos=0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_first_not_of(): received nullptr"); |
| return __str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_not_of(_CharT __c, size_type __pos=0) const _NOEXCEPT |
| { |
| return __str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_not_of(): received nullptr"); |
| return __str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_not_of(const _CharT* __s, size_type __pos=0) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_not_of(): received nullptr"); |
| return __str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_last_not_of |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_not_of(basic_string_view __s, size_type __pos=npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_last_not_of(): received nullptr"); |
| return __str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_not_of(_CharT __c, size_type __pos=npos) const _NOEXCEPT |
| { |
| return __str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_not_of(): received nullptr"); |
| return __str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_not_of(const _CharT* __s, size_type __pos=npos) const _NOEXCEPT |
| { |
| _LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_not_of(): received nullptr"); |
| return __str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| #if _LIBCPP_STD_VER > 17 |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(basic_string_view __s) const _NOEXCEPT |
| { return size() >= __s.size() && compare(0, __s.size(), __s) == 0; } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(value_type __c) const _NOEXCEPT |
| { return !empty() && _Traits::eq(front(), __c); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(const value_type* __s) const _NOEXCEPT |
| { return starts_with(basic_string_view(__s)); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(basic_string_view __s) const _NOEXCEPT |
| { return size() >= __s.size() && compare(size() - __s.size(), npos, __s) == 0; } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(value_type __c) const _NOEXCEPT |
| { return !empty() && _Traits::eq(back(), __c); } |
| |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(const value_type* __s) const _NOEXCEPT |
| { return ends_with(basic_string_view(__s)); } |
| #endif |
| |
| #if _LIBCPP_STD_VER > 20 |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool contains(basic_string_view __sv) const noexcept |
| { return find(__sv) != npos; } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool contains(value_type __c) const noexcept |
| { return find(__c) != npos; } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool contains(const value_type* __s) const |
| { return find(__s) != npos; } |
| #endif |
| |
| private: |
| const value_type* __data; |
| size_type __size; |
| }; |
| |
| #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES) |
| template <class _CharT, class _Traits> |
| inline constexpr bool ranges::enable_view<basic_string_view<_CharT, _Traits>> = true; |
| |
| template <class _CharT, class _Traits> |
| inline constexpr bool ranges::enable_borrowed_range<basic_string_view<_CharT, _Traits> > = true; |
| #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_RANGES) |
| |
| // [string.view.comparison] |
| // operator == |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator==(basic_string_view<_CharT, _Traits> __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) return false; |
| return __lhs.compare(__rhs) == 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator==(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) return false; |
| return __lhs.compare(__rhs) == 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator==(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) return false; |
| return __lhs.compare(__rhs) == 0; |
| } |
| |
| |
| // operator != |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) |
| return true; |
| return __lhs.compare(__rhs) != 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) |
| return true; |
| return __lhs.compare(__rhs) != 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| if ( __lhs.size() != __rhs.size()) |
| return true; |
| return __lhs.compare(__rhs) != 0; |
| } |
| |
| |
| // operator < |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) < 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) < 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) < 0; |
| } |
| |
| |
| // operator > |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator> (basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) > 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator>(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) > 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator>(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) > 0; |
| } |
| |
| |
| // operator <= |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) <= 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<=(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) <= 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator<=(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) <= 0; |
| } |
| |
| |
| // operator >= |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator>=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) >= 0; |
| } |
| |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator>=(basic_string_view<_CharT, _Traits> __lhs, |
| typename common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) >= 0; |
| } |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY |
| bool operator>=(typename common_type<basic_string_view<_CharT, _Traits> >::type __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) >= 0; |
| } |
| |
| |
| template<class _CharT, class _Traits> |
| basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| basic_string_view<_CharT, _Traits> __str); |
| |
| // [string.view.hash] |
| template<class _CharT> |
| struct _LIBCPP_TEMPLATE_VIS hash<basic_string_view<_CharT, char_traits<_CharT> > > |
| : public unary_function<basic_string_view<_CharT, char_traits<_CharT> >, size_t> |
| { |
| _LIBCPP_INLINE_VISIBILITY |
| size_t operator()(const basic_string_view<_CharT, char_traits<_CharT> > __val) const _NOEXCEPT { |
| return __do_string_hash(__val.data(), __val.data() + __val.size()); |
| } |
| }; |
| |
| |
| #if _LIBCPP_STD_VER > 11 |
| inline namespace literals |
| { |
| inline namespace string_view_literals |
| { |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| basic_string_view<char> operator "" sv(const char *__str, size_t __len) _NOEXCEPT |
| { |
| return basic_string_view<char> (__str, __len); |
| } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| basic_string_view<wchar_t> operator "" sv(const wchar_t *__str, size_t __len) _NOEXCEPT |
| { |
| return basic_string_view<wchar_t> (__str, __len); |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_CHAR8_T |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| basic_string_view<char8_t> operator "" sv(const char8_t *__str, size_t __len) _NOEXCEPT |
| { |
| return basic_string_view<char8_t> (__str, __len); |
| } |
| #endif |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| basic_string_view<char16_t> operator "" sv(const char16_t *__str, size_t __len) _NOEXCEPT |
| { |
| return basic_string_view<char16_t> (__str, __len); |
| } |
| |
| inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| basic_string_view<char32_t> operator "" sv(const char32_t *__str, size_t __len) _NOEXCEPT |
| { |
| return basic_string_view<char32_t> (__str, __len); |
| } |
| } |
| } |
| #endif |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| #endif // _LIBCPP_STRING_VIEW |
