| // -*- 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_VIEW |
| #define _LIBCPP_STRING_VIEW |
| |
| /* |
| |
| string_view synopsis |
| |
| #include <compare> |
| |
| 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> // Removed in C++20 |
| constexpr bool operator!=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> // Removed in C++20 |
| constexpr bool operator< (basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> // Removed in C++20 |
| constexpr bool operator> (basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> // Removed in C++20 |
| constexpr bool operator<=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> // Removed in C++20 |
| constexpr bool operator>=(basic_string_view<charT, traits> x, |
| basic_string_view<charT, traits> y) noexcept; |
| template<class charT, class traits> // Since C++20 |
| constexpr see below 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); |
| template <class It, class End> |
| constexpr basic_string_view(It begin, End end); // C++20 |
| template <class Range> |
| constexpr basic_string_view(Range&& r); // C++23 |
| |
| // 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 |
| }; |
| |
| // basic_string_view deduction guides |
| template<class It, class End> |
| basic_string_view(It, End) -> basic_string_view<iter_value_t<It>>; // C++20 |
| template<class Range> |
| basic_string_view(Range&&) -> basic_string_view<ranges::range_value_t<Range>>; // C++23 |
| |
| // 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 <__algorithm/min.h> |
| #include <__assert> // all public C++ headers provide the assertion handler |
| #include <__config> |
| #include <__functional/hash.h> |
| #include <__functional/unary_function.h> |
| #include <__fwd/string_view.h> |
| #include <__iterator/bounded_iter.h> |
| #include <__iterator/concepts.h> |
| #include <__iterator/readable_traits.h> |
| #include <__iterator/reverse_iterator.h> |
| #include <__memory/pointer_traits.h> |
| #include <__ranges/concepts.h> |
| #include <__ranges/data.h> |
| #include <__ranges/enable_borrowed_range.h> |
| #include <__ranges/enable_view.h> |
| #include <__ranges/size.h> |
| #include <__string/char_traits.h> |
| #include <__type_traits/is_array.h> |
| #include <__type_traits/is_convertible.h> |
| #include <__type_traits/is_same.h> |
| #include <__type_traits/is_standard_layout.h> |
| #include <__type_traits/is_trivial.h> |
| #include <__type_traits/remove_cvref.h> |
| #include <__type_traits/remove_reference.h> |
| #include <__type_traits/type_identity.h> |
| #include <iosfwd> |
| #include <limits> |
| #include <stdexcept> |
| #include <version> |
| |
| // 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.view.synop] |
| #include <compare> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| // TODO: This is a workaround for some vendors to carry a downstream diff to accept `nullptr` in |
| // string_view constructors. This can be refactored when this exact form isn't needed anymore. |
| template <class _Traits> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR |
| inline size_t __char_traits_length_checked(const typename _Traits::char_type* __s) _NOEXCEPT { |
| // This needs to be a single statement for C++11 constexpr |
| return _LIBCPP_ASSERT(__s != nullptr, "null pointer passed to non-null argument of char_traits<...>::length"), _Traits::length(__s); |
| } |
| |
| template<class _CharT, class _Traits> |
| class basic_string_view { |
| public: |
| // types |
| using traits_type = _Traits; |
| using value_type = _CharT; |
| using pointer = _CharT*; |
| using const_pointer = const _CharT*; |
| using reference = _CharT&; |
| using const_reference = const _CharT&; |
| #ifdef _LIBCPP_DEBUG_ITERATOR_BOUNDS_CHECKING |
| using const_iterator = __bounded_iter<const_pointer>; |
| #else |
| using const_iterator = const_pointer; // See [string.view.iterators] |
| #endif |
| using iterator = const_iterator; |
| using const_reverse_iterator = _VSTD::reverse_iterator<const_iterator>; |
| using reverse_iterator = const_reverse_iterator; |
| using size_type = size_t; |
| using difference_type = ptrdiff_t; |
| 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_INLINE_VISIBILITY |
| basic_string_view(const basic_string_view&) _NOEXCEPT = default; |
| |
| _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 >= 14 |
| _LIBCPP_ASSERT(__len <= static_cast<size_type>(numeric_limits<difference_type>::max()), "string_view::string_view(_CharT *, size_t): length does not fit in difference_type"); |
| _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): received nullptr"); |
| #endif |
| } |
| |
| #if _LIBCPP_STD_VER >= 20 |
| template <contiguous_iterator _It, sized_sentinel_for<_It> _End> |
| requires (is_same_v<iter_value_t<_It>, _CharT> && !is_convertible_v<_End, size_type>) |
| constexpr _LIBCPP_HIDE_FROM_ABI basic_string_view(_It __begin, _End __end) |
| : __data_(_VSTD::to_address(__begin)), __size_(__end - __begin) |
| { |
| _LIBCPP_ASSERT((__end - __begin) >= 0, "std::string_view::string_view(iterator, sentinel) received invalid range"); |
| } |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| #if _LIBCPP_STD_VER >= 23 |
| template <class _Range> |
| requires ( |
| !is_same_v<remove_cvref_t<_Range>, basic_string_view> && |
| ranges::contiguous_range<_Range> && |
| ranges::sized_range<_Range> && |
| is_same_v<ranges::range_value_t<_Range>, _CharT> && |
| !is_convertible_v<_Range, const _CharT*> && |
| (!requires(remove_cvref_t<_Range>& __d) { |
| __d.operator _VSTD::basic_string_view<_CharT, _Traits>(); |
| }) |
| ) |
| constexpr explicit _LIBCPP_HIDE_FROM_ABI |
| basic_string_view(_Range&& __r) : __data_(ranges::data(__r)), __size_(ranges::size(__r)) {} |
| #endif // _LIBCPP_STD_VER >= 23 |
| |
| _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 >= 23 |
| 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 { |
| #ifdef _LIBCPP_DEBUG_ITERATOR_BOUNDS_CHECKING |
| return std::__make_bounded_iter(data(), data(), data() + size()); |
| #else |
| return __data_; |
| #endif |
| } |
| |
| _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY |
| const_iterator cend() const _NOEXCEPT { |
| #ifdef _LIBCPP_DEBUG_ITERATOR_BOUNDS_CHECKING |
| return std::__make_bounded_iter(data() + size(), data(), data() + size()); |
| #else |
| return __data_ + __size_; |
| #endif |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX17 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX17 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX17 _LIBCPP_INLINE_VISIBILITY |
| const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX17 _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() / sizeof(value_type); } |
| |
| _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_SINCE_CXX14 _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_SINCE_CXX14 _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_SINCE_CXX14 _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_SINCE_CXX20 |
| 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_SINCE_CXX14 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_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| int compare(size_type __pos1, size_type __n1, basic_string_view __sv) const |
| { |
| return substr(__pos1, __n1).compare(__sv); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| int compare(const _CharT* __s) const _NOEXCEPT |
| { |
| return compare(basic_string_view(__s)); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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_SINCE_CXX14 _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_SINCE_CXX14 _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 std::__str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT |
| { |
| return std::__str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // rfind |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type rfind(_CharT __c, size_type __pos = npos) const _NOEXCEPT |
| { |
| return std::__str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_rfind<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_first_of |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_of(_CharT __c, size_type __pos = 0) const _NOEXCEPT |
| { return find(__c, __pos); } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_first_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| // find_last_of |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_last_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_of(_CharT __c, size_type __pos = npos) const _NOEXCEPT |
| { return rfind(__c, __pos); } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_last_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__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_SINCE_CXX14 _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 std::__str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type find_first_not_of(_CharT __c, size_type __pos=0) const _NOEXCEPT |
| { |
| return std::__str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_first_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__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_SINCE_CXX14 _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 std::__str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s.data(), __pos, __s.size()); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| size_type find_last_not_of(_CharT __c, size_type __pos=npos) const _NOEXCEPT |
| { |
| return std::__str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __c, __pos); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, __n); |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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 std::__str_find_last_not_of<value_type, size_type, traits_type, npos> |
| (data(), size(), __s, __pos, traits_type::length(__s)); |
| } |
| |
| #if _LIBCPP_STD_VER >= 20 |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(basic_string_view __s) const noexcept |
| { return size() >= __s.size() && compare(0, __s.size(), __s) == 0; } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(value_type __c) const noexcept |
| { return !empty() && _Traits::eq(front(), __c); } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool starts_with(const value_type* __s) const noexcept |
| { return starts_with(basic_string_view(__s)); } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(basic_string_view __s) const noexcept |
| { return size() >= __s.size() && compare(size() - __s.size(), npos, __s) == 0; } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(value_type __c) const noexcept |
| { return !empty() && _Traits::eq(back(), __c); } |
| |
| constexpr _LIBCPP_INLINE_VISIBILITY |
| bool ends_with(const value_type* __s) const noexcept |
| { return ends_with(basic_string_view(__s)); } |
| #endif |
| |
| #if _LIBCPP_STD_VER >= 23 |
| 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_; |
| }; |
| _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(basic_string_view); |
| |
| #if _LIBCPP_STD_VER >= 20 |
| 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 >= 20 |
| |
| // [string.view.deduct] |
| |
| #if _LIBCPP_STD_VER >= 20 |
| template <contiguous_iterator _It, sized_sentinel_for<_It> _End> |
| basic_string_view(_It, _End) -> basic_string_view<iter_value_t<_It>>; |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| |
| #if _LIBCPP_STD_VER >= 23 |
| template <ranges::contiguous_range _Range> |
| basic_string_view(_Range) -> basic_string_view<ranges::range_value_t<_Range>>; |
| #endif |
| |
| // [string.view.comparison] |
| // operator == |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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; |
| } |
| |
| // The dummy default template parameters are used to work around a MSVC issue with mangling, see VSO-409326 for details. |
| // This applies to the other sufficient overloads below for the other comparison operators. |
| template<class _CharT, class _Traits, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator==(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| if (__lhs.size() != __rhs.size()) return false; |
| return __lhs.compare(__rhs) == 0; |
| } |
| |
| #if _LIBCPP_STD_VER < 20 |
| // This overload is automatically generated in C++20. |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator==(__type_identity_t<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; |
| } |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| // operator <=> |
| |
| #if _LIBCPP_STD_VER >= 20 |
| |
| template <class _CharT, class _Traits> |
| _LIBCPP_HIDE_FROM_ABI constexpr auto |
| operator<=>(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) noexcept { |
| if constexpr (requires { typename _Traits::comparison_category; }) { |
| // [string.view]/4 |
| static_assert( |
| __comparison_category<typename _Traits::comparison_category>, |
| "return type is not a comparison category type"); |
| return static_cast<typename _Traits::comparison_category>(__lhs.compare(__rhs) <=> 0); |
| } else { |
| return static_cast<weak_ordering>(__lhs.compare(__rhs) <=> 0); |
| } |
| } |
| |
| template <class _CharT, class _Traits, int = 1> |
| _LIBCPP_HIDE_FROM_ABI constexpr auto operator<=>( |
| basic_string_view<_CharT, _Traits> __lhs, type_identity_t<basic_string_view<_CharT, _Traits>> __rhs) noexcept { |
| if constexpr (requires { typename _Traits::comparison_category; }) { |
| // [string.view]/4 |
| static_assert( |
| __comparison_category<typename _Traits::comparison_category>, |
| "return type is not a comparison category type"); |
| return static_cast<typename _Traits::comparison_category>(__lhs.compare(__rhs) <=> 0); |
| } else { |
| return static_cast<weak_ordering>(__lhs.compare(__rhs) <=> 0); |
| } |
| } |
| |
| #else // _LIBCPP_STD_VER >= 20 |
| |
| // operator != |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| if (__lhs.size() != __rhs.size()) |
| return true; |
| return __lhs.compare(__rhs) != 0; |
| } |
| |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator!=(__type_identity_t<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; |
| } |
| |
| |
| // operator < |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator<(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) < 0; |
| } |
| |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator<(__type_identity_t<basic_string_view<_CharT, _Traits> > __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) < 0; |
| } |
| |
| |
| // operator > |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator>(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) > 0; |
| } |
| |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator>(__type_identity_t<basic_string_view<_CharT, _Traits> > __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) > 0; |
| } |
| |
| |
| // operator <= |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator<=(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) <= 0; |
| } |
| |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator<=(__type_identity_t<basic_string_view<_CharT, _Traits> > __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) <= 0; |
| } |
| |
| |
| // operator >= |
| template<class _CharT, class _Traits> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _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, int = 1> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator>=(basic_string_view<_CharT, _Traits> __lhs, |
| __type_identity_t<basic_string_view<_CharT, _Traits> > __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) >= 0; |
| } |
| |
| template<class _CharT, class _Traits, int = 2> |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY |
| bool operator>=(__type_identity_t<basic_string_view<_CharT, _Traits> > __lhs, |
| basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT |
| { |
| return __lhs.compare(__rhs) >= 0; |
| } |
| |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| template<class _CharT, class _Traits> |
| _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, |
| basic_string_view<_CharT, _Traits> __str); |
| |
| // [string.view.hash] |
| template<class _CharT> |
| struct __string_view_hash : 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 std::__do_string_hash(__val.data(), __val.data() + __val.size()); |
| } |
| }; |
| |
| template <> |
| struct hash<basic_string_view<char, char_traits<char> > > : __string_view_hash<char> {}; |
| |
| #ifndef _LIBCPP_HAS_NO_CHAR8_T |
| template <> |
| struct hash<basic_string_view<char8_t, char_traits<char8_t> > > : __string_view_hash<char8_t> {}; |
| #endif |
| |
| template <> |
| struct hash<basic_string_view<char16_t, char_traits<char16_t> > > : __string_view_hash<char16_t> {}; |
| |
| template <> |
| struct hash<basic_string_view<char32_t, char_traits<char32_t> > > : __string_view_hash<char32_t> {}; |
| |
| #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS |
| template <> |
| struct hash<basic_string_view<wchar_t, char_traits<wchar_t> > > : __string_view_hash<wchar_t> {}; |
| #endif |
| |
| #if _LIBCPP_STD_VER >= 14 |
| 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); |
| } |
| |
| #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS |
| 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); |
| } |
| #endif |
| |
| #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); |
| } |
| } // namespace string_view_literals |
| } // namespace literals |
| #endif |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <algorithm> |
| # include <concepts> |
| # include <cstdlib> |
| # include <functional> |
| # include <iterator> |
| # include <type_traits> |
| #endif |
| |
| #endif // _LIBCPP_STRING_VIEW |
