826 lines
33 KiB
C++
826 lines
33 KiB
C++
// -*- C++ -*-
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//===------------------------ string_view ---------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_STRING_VIEW
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#define _LIBCPP_STRING_VIEW
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/*
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string_view synopsis
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namespace std {
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// 7.2, Class template basic_string_view
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template<class charT, class traits = char_traits<charT>>
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class basic_string_view;
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// 7.9, basic_string_view non-member comparison functions
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template<class charT, class traits>
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constexpr bool operator==(basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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template<class charT, class traits>
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constexpr bool operator!=(basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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template<class charT, class traits>
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constexpr bool operator< (basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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template<class charT, class traits>
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constexpr bool operator> (basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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template<class charT, class traits>
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constexpr bool operator<=(basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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template<class charT, class traits>
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constexpr bool operator>=(basic_string_view<charT, traits> x,
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basic_string_view<charT, traits> y) noexcept;
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// see below, sufficient additional overloads of comparison functions
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// 7.10, Inserters and extractors
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template<class charT, class traits>
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basic_ostream<charT, traits>&
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operator<<(basic_ostream<charT, traits>& os,
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basic_string_view<charT, traits> str);
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// basic_string_view typedef names
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typedef basic_string_view<char> string_view;
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typedef basic_string_view<char16_t> u16string_view;
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typedef basic_string_view<char32_t> u32string_view;
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typedef basic_string_view<wchar_t> wstring_view;
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template<class charT, class traits = char_traits<charT>>
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class basic_string_view {
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public:
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// types
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typedef traits traits_type;
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typedef charT value_type;
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typedef charT* pointer;
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typedef const charT* const_pointer;
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typedef charT& reference;
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typedef const charT& const_reference;
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typedef implementation-defined const_iterator;
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typedef const_iterator iterator;
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typedef reverse_iterator<const_iterator> const_reverse_iterator;
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typedef const_reverse_iterator reverse_iterator;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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static constexpr size_type npos = size_type(-1);
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// 7.3, basic_string_view constructors and assignment operators
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constexpr basic_string_view() noexcept;
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constexpr basic_string_view(const basic_string_view&) noexcept = default;
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basic_string_view& operator=(const basic_string_view&) noexcept = default;
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template<class Allocator>
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constexpr basic_string_view(const charT* str);
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constexpr basic_string_view(const charT* str, size_type len);
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// 7.4, basic_string_view iterator support
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constexpr const_iterator begin() const noexcept;
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constexpr const_iterator end() const noexcept;
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constexpr const_iterator cbegin() const noexcept;
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constexpr const_iterator cend() const noexcept;
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const_reverse_iterator rbegin() const noexcept;
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const_reverse_iterator rend() const noexcept;
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const_reverse_iterator crbegin() const noexcept;
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const_reverse_iterator crend() const noexcept;
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// 7.5, basic_string_view capacity
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constexpr size_type size() const noexcept;
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constexpr size_type length() const noexcept;
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constexpr size_type max_size() const noexcept;
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constexpr bool empty() const noexcept;
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// 7.6, basic_string_view element access
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constexpr const_reference operator[](size_type pos) const;
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constexpr const_reference at(size_type pos) const;
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constexpr const_reference front() const;
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constexpr const_reference back() const;
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constexpr const_pointer data() const noexcept;
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// 7.7, basic_string_view modifiers
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constexpr void remove_prefix(size_type n);
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constexpr void remove_suffix(size_type n);
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constexpr void swap(basic_string_view& s) noexcept;
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size_type copy(charT* s, size_type n, size_type pos = 0) const;
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constexpr basic_string_view substr(size_type pos = 0, size_type n = npos) const;
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constexpr int compare(basic_string_view s) const noexcept;
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constexpr int compare(size_type pos1, size_type n1, basic_string_view s) const;
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constexpr int compare(size_type pos1, size_type n1,
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basic_string_view s, size_type pos2, size_type n2) const;
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constexpr int compare(const charT* s) const;
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constexpr int compare(size_type pos1, size_type n1, const charT* s) const;
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constexpr int compare(size_type pos1, size_type n1,
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const charT* s, size_type n2) const;
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constexpr size_type find(basic_string_view s, size_type pos = 0) const noexcept;
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constexpr size_type find(charT c, size_type pos = 0) const noexcept;
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constexpr size_type find(const charT* s, size_type pos, size_type n) const;
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constexpr size_type find(const charT* s, size_type pos = 0) const;
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constexpr size_type rfind(basic_string_view s, size_type pos = npos) const noexcept;
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constexpr size_type rfind(charT c, size_type pos = npos) const noexcept;
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constexpr size_type rfind(const charT* s, size_type pos, size_type n) const;
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constexpr size_type rfind(const charT* s, size_type pos = npos) const;
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constexpr size_type find_first_of(basic_string_view s, size_type pos = 0) const noexcept;
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constexpr size_type find_first_of(charT c, size_type pos = 0) const noexcept;
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constexpr size_type find_first_of(const charT* s, size_type pos, size_type n) const;
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constexpr size_type find_first_of(const charT* s, size_type pos = 0) const;
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constexpr size_type find_last_of(basic_string_view s, size_type pos = npos) const noexcept;
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constexpr size_type find_last_of(charT c, size_type pos = npos) const noexcept;
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constexpr size_type find_last_of(const charT* s, size_type pos, size_type n) const;
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constexpr size_type find_last_of(const charT* s, size_type pos = npos) const;
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constexpr size_type find_first_not_of(basic_string_view s, size_type pos = 0) const noexcept;
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constexpr size_type find_first_not_of(charT c, size_type pos = 0) const noexcept;
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constexpr size_type find_first_not_of(const charT* s, size_type pos, size_type n) const;
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constexpr size_type find_first_not_of(const charT* s, size_type pos = 0) const;
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constexpr size_type find_last_not_of(basic_string_view s, size_type pos = npos) const noexcept;
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constexpr size_type find_last_not_of(charT c, size_type pos = npos) const noexcept;
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constexpr size_type find_last_not_of(const charT* s, size_type pos, size_type n) const;
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constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const;
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constexpr bool starts_with(basic_string_view s) const noexcept; // C++2a
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constexpr bool starts_with(charT c) const noexcept; // C++2a
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constexpr bool starts_with(const charT* s) const; // C++2a
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constexpr bool ends_with(basic_string_view s) const noexcept; // C++2a
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constexpr bool ends_with(charT c) const noexcept; // C++2a
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constexpr bool ends_with(const charT* s) const; // C++2a
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private:
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const_pointer data_; // exposition only
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size_type size_; // exposition only
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};
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// 7.11, Hash support
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template <class T> struct hash;
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template <> struct hash<string_view>;
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template <> struct hash<u16string_view>;
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template <> struct hash<u32string_view>;
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template <> struct hash<wstring_view>;
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constexpr basic_string_view<char> operator "" sv( const char *str, size_t len ) noexcept;
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constexpr basic_string_view<wchar_t> operator "" sv( const wchar_t *str, size_t len ) noexcept;
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constexpr basic_string_view<char16_t> operator "" sv( const char16_t *str, size_t len ) noexcept;
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constexpr basic_string_view<char32_t> operator "" sv( const char32_t *str, size_t len ) noexcept;
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} // namespace std
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*/
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#include <__config>
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#include <__string>
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#include <algorithm>
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#include <iterator>
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#include <limits>
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#include <stdexcept>
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#include <__debug>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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template<class _CharT, class _Traits = char_traits<_CharT> >
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class _LIBCPP_TEMPLATE_VIS basic_string_view {
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public:
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// types
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typedef _Traits traits_type;
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typedef _CharT value_type;
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typedef _CharT* pointer;
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typedef const _CharT* const_pointer;
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typedef _CharT& reference;
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typedef const _CharT& const_reference;
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typedef const_pointer const_iterator; // See [string.view.iterators]
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typedef const_iterator iterator;
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typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
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typedef const_reverse_iterator reverse_iterator;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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static _LIBCPP_CONSTEXPR const size_type npos = -1; // size_type(-1);
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static_assert(is_pod<value_type>::value, "Character type of basic_string_view must be a POD");
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static_assert((is_same<_CharT, typename traits_type::char_type>::value),
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"traits_type::char_type must be the same type as CharT");
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// [string.view.cons], construct/copy
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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basic_string_view() _NOEXCEPT : __data (nullptr), __size(0) {}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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basic_string_view(const basic_string_view&) _NOEXCEPT = default;
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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basic_string_view& operator=(const basic_string_view&) _NOEXCEPT = default;
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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basic_string_view(const _CharT* __s, size_type __len) _NOEXCEPT
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: __data(__s), __size(__len)
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{
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// #if _LIBCPP_STD_VER > 11
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// _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): received nullptr");
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// #endif
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}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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basic_string_view(const _CharT* __s)
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: __data(__s), __size(_Traits::length(__s)) {}
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// [string.view.iterators], iterators
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_iterator begin() const _NOEXCEPT { return cbegin(); }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_iterator end() const _NOEXCEPT { return cend(); }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_iterator cbegin() const _NOEXCEPT { return __data; }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_iterator cend() const _NOEXCEPT { return __data + __size; }
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_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
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const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
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_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
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const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
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_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
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const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
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_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
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const_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
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// [string.view.capacity], capacity
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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size_type size() const _NOEXCEPT { return __size; }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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size_type length() const _NOEXCEPT { return __size; }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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size_type max_size() const _NOEXCEPT { return numeric_limits<size_type>::max(); }
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_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
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bool empty() const _NOEXCEPT { return __size == 0; }
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// [string.view.access], element access
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_reference operator[](size_type __pos) const _NOEXCEPT { return __data[__pos]; }
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_reference at(size_type __pos) const
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{
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return __pos >= size()
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? (__throw_out_of_range("string_view::at"), __data[0])
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: __data[__pos];
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}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_reference front() const
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{
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return _LIBCPP_ASSERT(!empty(), "string_view::front(): string is empty"), __data[0];
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}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_reference back() const
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{
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return _LIBCPP_ASSERT(!empty(), "string_view::back(): string is empty"), __data[__size-1];
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}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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const_pointer data() const _NOEXCEPT { return __data; }
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// [string.view.modifiers], modifiers:
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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void remove_prefix(size_type __n) _NOEXCEPT
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{
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_LIBCPP_ASSERT(__n <= size(), "remove_prefix() can't remove more than size()");
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__data += __n;
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__size -= __n;
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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void remove_suffix(size_type __n) _NOEXCEPT
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{
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_LIBCPP_ASSERT(__n <= size(), "remove_suffix() can't remove more than size()");
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__size -= __n;
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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void swap(basic_string_view& __other) _NOEXCEPT
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{
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const value_type *__p = __data;
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__data = __other.__data;
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__other.__data = __p;
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size_type __sz = __size;
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__size = __other.__size;
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__other.__size = __sz;
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}
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_LIBCPP_INLINE_VISIBILITY
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size_type copy(_CharT* __s, size_type __n, size_type __pos = 0) const
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{
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if (__pos > size())
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__throw_out_of_range("string_view::copy");
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size_type __rlen = _VSTD::min(__n, size() - __pos);
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_Traits::copy(__s, data() + __pos, __rlen);
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return __rlen;
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}
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_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
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basic_string_view substr(size_type __pos = 0, size_type __n = npos) const
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{
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return __pos > size()
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? (__throw_out_of_range("string_view::substr"), basic_string_view())
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: basic_string_view(data() + __pos, _VSTD::min(__n, size() - __pos));
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 int compare(basic_string_view __sv) const _NOEXCEPT
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{
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size_type __rlen = _VSTD::min( size(), __sv.size());
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int __retval = _Traits::compare(data(), __sv.data(), __rlen);
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if ( __retval == 0 ) // first __rlen chars matched
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__retval = size() == __sv.size() ? 0 : ( size() < __sv.size() ? -1 : 1 );
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return __retval;
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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int compare(size_type __pos1, size_type __n1, basic_string_view __sv) const
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{
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return substr(__pos1, __n1).compare(__sv);
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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int compare( size_type __pos1, size_type __n1,
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basic_string_view __sv, size_type __pos2, size_type __n2) const
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{
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return substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2));
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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int compare(const _CharT* __s) const _NOEXCEPT
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{
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return compare(basic_string_view(__s));
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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int compare(size_type __pos1, size_type __n1, const _CharT* __s) const
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{
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return substr(__pos1, __n1).compare(basic_string_view(__s));
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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int compare(size_type __pos1, size_type __n1, const _CharT* __s, size_type __n2) const
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{
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return substr(__pos1, __n1).compare(basic_string_view(__s, __n2));
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}
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// find
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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size_type find(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT
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{
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_LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): received nullptr");
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return __str_find<value_type, size_type, traits_type, npos>
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(data(), size(), __s.data(), __pos, __s.size());
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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size_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT
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{
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return __str_find<value_type, size_type, traits_type, npos>
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(data(), size(), __c, __pos);
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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size_type find(const _CharT* __s, size_type __pos, size_type __n) const
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{
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_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find(): received nullptr");
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return __str_find<value_type, size_type, traits_type, npos>
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(data(), size(), __s, __pos, __n);
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}
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_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
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size_type find(const _CharT* __s, size_type __pos = 0) const
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{
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_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
{
|
|
_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
|
|
|
|
private:
|
|
const value_type* __data;
|
|
size_type __size;
|
|
};
|
|
|
|
|
|
// [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;
|
|
}
|
|
|
|
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;
|
|
|
|
// [string.view.hash]
|
|
template<class _CharT, class _Traits>
|
|
struct _LIBCPP_TEMPLATE_VIS hash<basic_string_view<_CharT, _Traits> >
|
|
: public unary_function<basic_string_view<_CharT, _Traits>, size_t>
|
|
{
|
|
size_t operator()(const basic_string_view<_CharT, _Traits> __val) const _NOEXCEPT;
|
|
};
|
|
|
|
template<class _CharT, class _Traits>
|
|
size_t
|
|
hash<basic_string_view<_CharT, _Traits> >::operator()(
|
|
const basic_string_view<_CharT, _Traits> __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);
|
|
}
|
|
|
|
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
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|
|
|
_LIBCPP_POP_MACROS
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|
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#endif // _LIBCPP_STRING_VIEW
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