diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/string_view')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/string_view | 65 |
1 files changed, 48 insertions, 17 deletions
diff --git a/contrib/llvm-project/libcxx/include/string_view b/contrib/llvm-project/libcxx/include/string_view index 8a684a8f966c..bc0245cf2b5e 100644 --- a/contrib/llvm-project/libcxx/include/string_view +++ b/contrib/llvm-project/libcxx/include/string_view @@ -142,12 +142,16 @@ namespace std { constexpr size_type find_last_not_of(const charT* s, size_type pos, size_type n) const; constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const; - constexpr bool starts_with(basic_string_view s) const noexcept; // C++2a - constexpr bool starts_with(charT c) const noexcept; // C++2a - constexpr bool starts_with(const charT* s) const; // C++2a - constexpr bool ends_with(basic_string_view s) const noexcept; // C++2a - constexpr bool ends_with(charT c) const noexcept; // C++2a - constexpr bool ends_with(const charT* s) const; // C++2a + 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 @@ -192,7 +196,26 @@ _LIBCPP_PUSH_MACROS _LIBCPP_BEGIN_NAMESPACE_STD template<class _CharT, class _Traits = char_traits<_CharT> > -class _LIBCPP_TEMPLATE_VIS basic_string_view { + class _LIBCPP_TEMPLATE_VIS basic_string_view; + +typedef basic_string_view<char> string_view; +#ifndef _LIBCPP_NO_HAS_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_NO_HAS_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; @@ -236,7 +259,7 @@ public: _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY basic_string_view(const _CharT* __s) - : __data(__s), __size(std::__char_traits_length_checked<_Traits>(__s)) {} + : __data(__s), __size(_VSTD::__char_traits_length_checked<_Traits>(__s)) {} // [string.view.iterators], iterators _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY @@ -278,7 +301,9 @@ public: // [string.view.access], element access _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY - const_reference operator[](size_type __pos) const _NOEXCEPT { return __data[__pos]; } + 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 @@ -601,6 +626,20 @@ public: { 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; @@ -774,14 +813,6 @@ basic_ostream<_CharT, _Traits>& operator<<(basic_ostream<_CharT, _Traits>& __os, basic_string_view<_CharT, _Traits> __str); -typedef basic_string_view<char> string_view; -#ifndef _LIBCPP_NO_HAS_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; - // [string.view.hash] template<class _CharT> struct _LIBCPP_TEMPLATE_VIS hash<basic_string_view<_CharT, char_traits<_CharT> > > |