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zig/libcxx/include/string_view
Andrew Kelley 5cecb5e479
libcxx headers 8.0.0rc3
2019-03-05 22:42:35 -05:00

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// -*- 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_STRING_VIEW
#define _LIBCPP_STRING_VIEW
/*
string_view synopsis
namespace std {
// 7.2, Class template basic_string_view
template<class charT, class traits = char_traits<charT>>
class basic_string_view;
// 7.9, basic_string_view non-member comparison functions
template<class charT, class traits>
constexpr bool operator==(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
template<class charT, class traits>
constexpr bool operator!=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
template<class charT, class traits>
constexpr bool operator< (basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
template<class charT, class traits>
constexpr bool operator> (basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
template<class charT, class traits>
constexpr bool operator<=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
template<class charT, class traits>
constexpr bool operator>=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) noexcept;
// see below, sufficient additional overloads of comparison functions
// 7.10, Inserters and extractors
template<class charT, class traits>
basic_ostream<charT, traits>&
operator<<(basic_ostream<charT, traits>& os,
basic_string_view<charT, traits> str);
// basic_string_view typedef names
typedef basic_string_view<char> string_view;
typedef basic_string_view<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);
constexpr basic_string_view(const charT* str, size_type len);
// 7.4, basic_string_view iterator support
constexpr const_iterator begin() const noexcept;
constexpr const_iterator end() const noexcept;
constexpr const_iterator cbegin() const noexcept;
constexpr const_iterator cend() const noexcept;
const_reverse_iterator rbegin() const noexcept;
const_reverse_iterator rend() const noexcept;
const_reverse_iterator crbegin() const noexcept;
const_reverse_iterator crend() const noexcept;
// 7.5, basic_string_view capacity
constexpr size_type size() const noexcept;
constexpr size_type length() const noexcept;
constexpr size_type max_size() const noexcept;
constexpr bool empty() const noexcept;
// 7.6, basic_string_view element access
constexpr const_reference operator[](size_type pos) const;
constexpr const_reference at(size_type pos) const;
constexpr const_reference front() const;
constexpr const_reference back() const;
constexpr const_pointer data() const noexcept;
// 7.7, basic_string_view modifiers
constexpr void remove_prefix(size_type n);
constexpr void remove_suffix(size_type n);
constexpr void swap(basic_string_view& s) noexcept;
size_type copy(charT* s, size_type n, size_type pos = 0) const;
constexpr 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;
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
private:
const_pointer data_; // exposition only
size_type size_; // exposition only
};
// 7.11, Hash support
template <class T> struct hash;
template <> struct hash<string_view>;
template <> struct hash<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<char16_t> operator "" sv( const char16_t *str, size_t len ) noexcept;
constexpr basic_string_view<char32_t> operator "" sv( const char32_t *str, size_t len ) noexcept;
} // namespace std
*/
#include <__config>
#include <__string>
#include <algorithm>
#include <iterator>
#include <limits>
#include <stdexcept>
#include <version>
#include <__debug>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TEMPLATE_VIS basic_string_view {
public:
// types
typedef _Traits traits_type;
typedef _CharT value_type;
typedef _CharT* pointer;
typedef const _CharT* const_pointer;
typedef _CharT& reference;
typedef const _CharT& const_reference;
typedef const_pointer const_iterator; // See [string.view.iterators]
typedef const_iterator iterator;
typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
typedef const_reverse_iterator reverse_iterator;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
static _LIBCPP_CONSTEXPR const size_type npos = -1; // size_type(-1);
static_assert((!is_array<value_type>::value), "Character type of basic_string_view must not be an array");
static_assert(( is_standard_layout<value_type>::value), "Character type of basic_string_view must be standard-layout");
static_assert(( is_trivial<value_type>::value), "Character type of basic_string_view must be trivial");
static_assert((is_same<_CharT, typename traits_type::char_type>::value),
"traits_type::char_type must be the same type as CharT");
// [string.view.cons], construct/copy
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
basic_string_view() _NOEXCEPT : __data (nullptr), __size(0) {}
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
basic_string_view(const basic_string_view&) _NOEXCEPT = default;
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
basic_string_view& operator=(const basic_string_view&) _NOEXCEPT = default;
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
basic_string_view(const _CharT* __s, size_type __len) _NOEXCEPT
: __data(__s), __size(__len)
{
// #if _LIBCPP_STD_VER > 11
// _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): received nullptr");
// #endif
}
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
basic_string_view(const _CharT* __s)
: __data(__s), __size(_Traits::length(__s)) {}
// [string.view.iterators], iterators
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_iterator begin() const _NOEXCEPT { return cbegin(); }
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_iterator end() const _NOEXCEPT { return cend(); }
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_iterator cbegin() const _NOEXCEPT { return __data; }
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_iterator cend() const _NOEXCEPT { return __data + __size; }
_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
_LIBCPP_CONSTEXPR_AFTER_CXX14 _LIBCPP_INLINE_VISIBILITY
const_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
// [string.view.capacity], capacity
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
size_type size() const _NOEXCEPT { return __size; }
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
size_type length() const _NOEXCEPT { return __size; }
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
size_type max_size() const _NOEXCEPT { return numeric_limits<size_type>::max(); }
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
bool empty() const _NOEXCEPT { return __size == 0; }
// [string.view.access], element access
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_reference operator[](size_type __pos) const _NOEXCEPT { return __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
{
return _LIBCPP_ASSERT(!empty(), "string_view::front(): string is empty"), __data[0];
}
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_reference back() const
{
return _LIBCPP_ASSERT(!empty(), "string_view::back(): string is empty"), __data[__size-1];
}
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
const_pointer data() const _NOEXCEPT { return __data; }
// [string.view.modifiers], modifiers:
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
void remove_prefix(size_type __n) _NOEXCEPT
{
_LIBCPP_ASSERT(__n <= size(), "remove_prefix() can't remove more than size()");
__data += __n;
__size -= __n;
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
void remove_suffix(size_type __n) _NOEXCEPT
{
_LIBCPP_ASSERT(__n <= size(), "remove_suffix() can't remove more than size()");
__size -= __n;
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
void swap(basic_string_view& __other) _NOEXCEPT
{
const value_type *__p = __data;
__data = __other.__data;
__other.__data = __p;
size_type __sz = __size;
__size = __other.__size;
__other.__size = __sz;
}
_LIBCPP_INLINE_VISIBILITY
size_type copy(_CharT* __s, size_type __n, size_type __pos = 0) const
{
if (__pos > size())
__throw_out_of_range("string_view::copy");
size_type __rlen = _VSTD::min(__n, size() - __pos);
_Traits::copy(__s, data() + __pos, __rlen);
return __rlen;
}
_LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
basic_string_view substr(size_type __pos = 0, size_type __n = npos) const
{
return __pos > size()
? (__throw_out_of_range("string_view::substr"), basic_string_view())
: basic_string_view(data() + __pos, _VSTD::min(__n, size() - __pos));
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 int compare(basic_string_view __sv) const _NOEXCEPT
{
size_type __rlen = _VSTD::min( size(), __sv.size());
int __retval = _Traits::compare(data(), __sv.data(), __rlen);
if ( __retval == 0 ) // first __rlen chars matched
__retval = size() == __sv.size() ? 0 : ( size() < __sv.size() ? -1 : 1 );
return __retval;
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
int compare(size_type __pos1, size_type __n1, basic_string_view __sv) const
{
return substr(__pos1, __n1).compare(__sv);
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
int compare( size_type __pos1, size_type __n1,
basic_string_view __sv, size_type __pos2, size_type __n2) const
{
return substr(__pos1, __n1).compare(__sv.substr(__pos2, __n2));
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
int compare(const _CharT* __s) const _NOEXCEPT
{
return compare(basic_string_view(__s));
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
int compare(size_type __pos1, size_type __n1, const _CharT* __s) const
{
return substr(__pos1, __n1).compare(basic_string_view(__s));
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
int compare(size_type __pos1, size_type __n1, const _CharT* __s, size_type __n2) const
{
return substr(__pos1, __n1).compare(basic_string_view(__s, __n2));
}
// find
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
size_type find(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT
{
_LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): received nullptr");
return __str_find<value_type, size_type, traits_type, npos>
(data(), size(), __s.data(), __pos, __s.size());
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
size_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT
{
return __str_find<value_type, size_type, traits_type, npos>
(data(), size(), __c, __pos);
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
size_type find(const _CharT* __s, size_type __pos, size_type __n) const
{
_LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find(): received nullptr");
return __str_find<value_type, size_type, traits_type, npos>
(data(), size(), __s, __pos, __n);
}
_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
size_type find(const _CharT* __s, size_type __pos = 0) const
{
_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;
#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, class _Traits>
struct _LIBCPP_TEMPLATE_VIS hash<basic_string_view<_CharT, _Traits> >
: public unary_function<basic_string_view<_CharT, _Traits>, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t 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);
}
#ifndef _LIBCPP_NO_HAS_CHAR8_T
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
basic_string_view<char8_t> operator "" sv(const char8_t *__str, size_t __len) _NOEXCEPT
{
return basic_string_view<char8_t> (__str, __len);
}
#endif
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
basic_string_view<char16_t> operator "" sv(const char16_t *__str, size_t __len) _NOEXCEPT
{
return basic_string_view<char16_t> (__str, __len);
}
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
basic_string_view<char32_t> operator "" sv(const char32_t *__str, size_t __len) _NOEXCEPT
{
return basic_string_view<char32_t> (__str, __len);
}
}
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP_STRING_VIEW
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