// -*- C++ -*-//===------------------------ string_view ---------------------------------===////// The LLVM Compiler Infrastructure//// This file is distributed under the University of Illinois Open Source// License. See LICENSE.TXT for details.////===----------------------------------------------------------------------===//#ifndef _LIBCPP_LFTS_STRING_VIEW#define _LIBCPP_LFTS_STRING_VIEW/*string_view synopsisnamespace std {namespace experimental {inline namespace library_fundamentals_v1 {// 7.2, Class template basic_string_viewtemplate<class charT, class traits = char_traits<charT>>class basic_string_view;// 7.9, basic_string_view non-member comparison functionstemplate<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 extractorstemplate<class charT, class traits>basic_ostream<charT, traits>&operator<<(basic_ostream<charT, traits>& os,basic_string_view<charT, traits> str);// basic_string_view typedef namestypedef basic_string_view<char> string_view;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:// typestypedef 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 operatorsconstexpr 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>basic_string_view(const basic_string<charT, traits, Allocator>& str) noexcept;constexpr basic_string_view(const charT* str);constexpr basic_string_view(const charT* str, size_type len);// 7.4, basic_string_view iterator supportconstexpr 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 capacityconstexpr 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 accessconstexpr 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 modifiersconstexpr void clear() noexcept;constexpr void remove_prefix(size_type n);constexpr void remove_suffix(size_type n);constexpr void swap(basic_string_view& s) noexcept;// 7.8, basic_string_view string operationstemplate<class Allocator>explicit operator basic_string<charT, traits, Allocator>() const;template<class Allocator = allocator<charT>>basic_string<charT, traits, Allocator> to_string(const Allocator& a = Allocator()) const;size_type copy(charT* s, size_type n, size_type pos = 0) const;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;constexpr size_type find(const charT* s, size_type pos = 0) const;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;constexpr size_type rfind(const charT* s, size_type pos = npos) const;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;constexpr size_type find_first_of(const charT* s, size_type pos = 0) const;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;constexpr size_type find_last_of(const charT* s, size_type pos = npos) const;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;constexpr size_type find_first_not_of(const charT* s, size_type pos = 0) const;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;constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const;private:const_pointer data_; // exposition onlysize_type size_; // exposition only};} // namespace fundamentals_v1} // namespace experimental// 7.11, Hash supporttemplate <class T> struct hash;template <> struct hash<experimental::string_view>;template <> struct hash<experimental::u16string_view>;template <> struct hash<experimental::u32string_view>;template <> struct hash<experimental::wstring_view>;} // namespace std*/#include <experimental/__config>#include <string>#include <algorithm>#include <iterator>#include <ostream>#include <iomanip>#include <__debug>#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)#pragma GCC system_header#endif_LIBCPP_BEGIN_NAMESPACE_LFTStemplate<class _CharT, class _Traits = _VSTD::char_traits<_CharT> >class _LIBCPP_TYPE_VIS_ONLY basic_string_view {public:// typestypedef _Traits traits_type;typedef _CharT value_type;typedef const _CharT* pointer;typedef const _CharT* const_pointer;typedef const _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);// [string.view.cons], construct/copy_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYbasic_string_view() _NOEXCEPT : __data (nullptr), __size(0) {}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYbasic_string_view(const basic_string_view&) _NOEXCEPT = default;_LIBCPP_INLINE_VISIBILITYbasic_string_view& operator=(const basic_string_view&) _NOEXCEPT = default;template<class _Allocator>_LIBCPP_INLINE_VISIBILITYbasic_string_view(const basic_string<_CharT, _Traits, _Allocator>& __str) _NOEXCEPT: __data (__str.data()), __size(__str.size()) {}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYbasic_string_view(const _CharT* __s, size_type __len): __data(__s), __size(__len){// _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): recieved nullptr");}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYbasic_string_view(const _CharT* __s): __data(__s), __size(_Traits::length(__s)) {}// [string.view.iterators], iterators_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_iterator begin() const _NOEXCEPT { return cbegin(); }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_iterator end() const _NOEXCEPT { return cend(); }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_iterator cbegin() const _NOEXCEPT { return __data; }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_iterator cend() const _NOEXCEPT { return __data + __size; }_LIBCPP_INLINE_VISIBILITYconst_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }_LIBCPP_INLINE_VISIBILITYconst_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }_LIBCPP_INLINE_VISIBILITYconst_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }_LIBCPP_INLINE_VISIBILITYconst_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }// [string.view.capacity], capacity_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYsize_type size() const _NOEXCEPT { return __size; }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYsize_type length() const _NOEXCEPT { return __size; }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYsize_type max_size() const _NOEXCEPT { return _VSTD::numeric_limits<size_type>::max(); }_LIBCPP_CONSTEXPR bool _LIBCPP_INLINE_VISIBILITYempty() const _NOEXCEPT { return __size == 0; }// [string.view.access], element access_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_reference operator[](size_type __pos) const { return __data[__pos]; }_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_reference at(size_type __pos) const{return __pos >= size()? (throw out_of_range("string_view::at"), __data[0]): __data[__pos];}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_reference front() const{return _LIBCPP_ASSERT(!empty(), "string_view::front(): string is empty"), __data[0];}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_reference back() const{return _LIBCPP_ASSERT(!empty(), "string_view::back(): string is empty"), __data[__size-1];}_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITYconst_pointer data() const _NOEXCEPT { return __data; }// [string.view.modifiers], modifiers:_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYvoid clear() _NOEXCEPT{__data = nullptr;__size = 0;}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYvoid 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_VISIBILITYvoid 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_VISIBILITYvoid 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;// _VSTD::swap( __data, __other.__data );// _VSTD::swap( __size, __other.__size );}// [string.view.ops], string operations:template<class _Allocator>_LIBCPP_INLINE_VISIBILITY_LIBCPP_EXPLICIT operator basic_string<_CharT, _Traits, _Allocator>() const{ return basic_string<_CharT, _Traits, _Allocator>( begin(), end()); }template<class _Allocator = allocator<_CharT> >_LIBCPP_INLINE_VISIBILITYbasic_string<_CharT, _Traits, _Allocator>to_string( const _Allocator& __a = _Allocator()) const{ return basic_string<_CharT, _Traits, _Allocator> ( begin(), end(), __a ); }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 );_VSTD::copy_n(begin() + __pos, __rlen, __s );return __rlen;}_LIBCPP_CONSTEXPRbasic_string_view substr(size_type __pos = 0, size_type __n = npos) const{// if (__pos > size())// throw out_of_range("string_view::substr");// size_type __rlen = _VSTD::min( __n, size() - __pos );// return basic_string_view(data() + __pos, __rlen);return __pos > size()? throw out_of_range("string_view::substr"): 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_VISIBILITYint compare(size_type __pos1, size_type __n1, basic_string_view __sv) const{return substr(__pos1, __n1).compare(__sv);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYint 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_VISIBILITYint compare(const _CharT* __s) const{return compare(basic_string_view(__s));}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYint 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_VISIBILITYint 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_VISIBILITYsize_type find(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT{_LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): recieved nullptr");return _VSTD::__str_find<value_type, size_type, traits_type, npos>(data(), size(), __s.data(), __pos, __s.size());}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT{return _VSTD::__str_find<value_type, size_type, traits_type, npos>(data(), size(), __c, __pos);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find(): recieved nullptr");return _VSTD::__str_find<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find(const _CharT* __s, size_type __pos = 0) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::find(): recieved nullptr");return _VSTD::__str_find<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, traits_type::length(__s));}// rfind_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type rfind(basic_string_view __s, size_type __pos = npos) const _NOEXCEPT{_LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): recieved nullptr");return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>(data(), size(), __s.data(), __pos, __s.size());}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type rfind(_CharT __c, size_type __pos = npos) const _NOEXCEPT{return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>(data(), size(), __c, __pos);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type rfind(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::rfind(): recieved nullptr");return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type rfind(const _CharT* __s, size_type __pos=npos) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::rfind(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_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(): recieved nullptr");return _VSTD::__str_find_first_of<value_type, size_type, traits_type, npos>(data(), size(), __s.data(), __pos, __s.size());}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_first_of(_CharT __c, size_type __pos = 0) const _NOEXCEPT{ return find(__c, __pos); }_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_first_of(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_of(): recieved nullptr");return _VSTD::__str_find_first_of<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_first_of(const _CharT* __s, size_type __pos=0) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_of(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_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(): recieved nullptr");return _VSTD::__str_find_last_of<value_type, size_type, traits_type, npos>(data(), size(), __s.data(), __pos, __s.size());}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_last_of(_CharT __c, size_type __pos = npos) const _NOEXCEPT{ return rfind(__c, __pos); }_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_last_of(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_of(): recieved nullptr");return _VSTD::__str_find_last_of<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_last_of(const _CharT* __s, size_type __pos=npos) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_of(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_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(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_type find_first_not_of(_CharT __c, size_type __pos=0) const _NOEXCEPT{return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>(data(), size(), __c, __pos);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_not_of(): recieved nullptr");return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_first_not_of(const _CharT* __s, size_type __pos=0) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_not_of(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_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(): recieved nullptr");return _VSTD::__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_VISIBILITYsize_type find_last_not_of(_CharT __c, size_type __pos=npos) const _NOEXCEPT{return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>(data(), size(), __c, __pos);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const{_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_not_of(): recieved nullptr");return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, __n);}_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYsize_type find_last_not_of(const _CharT* __s, size_type __pos=npos) const{_LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_not_of(): recieved nullptr");return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>(data(), size(), __s, __pos, traits_type::length(__s));}private:const value_type* __data;size_type __size;};// [string.view.comparison]// operator ==template<class _CharT, class _Traits>_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITYbool 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_VISIBILITYbool operator==(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator==(typename _VSTD::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_VISIBILITYbool 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_VISIBILITYbool operator!=(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator!=(typename _VSTD::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_VISIBILITYbool 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_VISIBILITYbool operator<(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator<(typename _VSTD::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_VISIBILITYbool 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_VISIBILITYbool operator>(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator>(typename _VSTD::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_VISIBILITYbool 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_VISIBILITYbool operator<=(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator<=(typename _VSTD::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_VISIBILITYbool 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_VISIBILITYbool operator>=(basic_string_view<_CharT, _Traits> __lhs,typename _VSTD::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_VISIBILITYbool operator>=(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT{return __lhs.compare(__rhs) >= 0;}// [string.view.io]template<class _CharT, class _Traits>basic_ostream<_CharT, _Traits>&operator<<(basic_ostream<_CharT, _Traits>& __os, basic_string_view<_CharT, _Traits> __sv){return _VSTD::__put_character_sequence(__os, __sv.data(), __sv.size());}typedef basic_string_view<char> string_view;typedef basic_string_view<char16_t> u16string_view;typedef basic_string_view<char32_t> u32string_view;typedef basic_string_view<wchar_t> wstring_view;_LIBCPP_END_NAMESPACE_LFTS_LIBCPP_BEGIN_NAMESPACE_STD// [string.view.hash]// Shamelessly stolen from <string>template<class _CharT, class _Traits>struct _LIBCPP_TYPE_VIS_ONLY hash<std::experimental::basic_string_view<_CharT, _Traits> >: public unary_function<std::experimental::basic_string_view<_CharT, _Traits>, size_t>{size_t operator()(const std::experimental::basic_string_view<_CharT, _Traits>& __val) const _NOEXCEPT;};template<class _CharT, class _Traits>size_thash<std::experimental::basic_string_view<_CharT, _Traits> >::operator()(const std::experimental::basic_string_view<_CharT, _Traits>& __val) const _NOEXCEPT{return __do_string_hash(__val.data(), __val.data() + __val.size());}#if _LIBCPP_STD_VER > 11template <class _CharT, class _Traits>__quoted_output_proxy<_CharT, const _CharT *, _Traits>quoted ( std::experimental::basic_string_view <_CharT, _Traits> __sv,_CharT __delim = _CharT('"'), _CharT __escape=_CharT('\\')){return __quoted_output_proxy<_CharT, const _CharT *, _Traits>( __sv.data(), __sv.data() + __sv.size(), __delim, __escape );}#endif_LIBCPP_END_NAMESPACE_STD#endif // _LIBCPP_LFTS_STRING_VIEW