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Diffstat (limited to 'contrib/llvm-project/libcxx/include/__string')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/__string | 1146 |
1 files changed, 1146 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__string b/contrib/llvm-project/libcxx/include/__string new file mode 100644 index 000000000000..b77a7fb4f8d3 --- /dev/null +++ b/contrib/llvm-project/libcxx/include/__string @@ -0,0 +1,1146 @@ +// -*- C++ -*- +//===-------------------------- __string ----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP___STRING +#define _LIBCPP___STRING + +#include <__config> +#include <__algorithm/copy.h> +#include <__algorithm/copy_backward.h> +#include <__algorithm/copy_n.h> +#include <__algorithm/fill_n.h> +#include <__algorithm/find_first_of.h> +#include <__algorithm/find_end.h> +#include <__algorithm/min.h> +#include <__functional/hash.h> // for __murmur2_or_cityhash +#include <__iterator/iterator_traits.h> +#include <cstdio> // for EOF +#include <cstdint> // for uint_least16_t +#include <cstring> // for memcpy +#include <cwchar> // for wmemcpy +#include <type_traits> // for __libcpp_is_constant_evaluated + +#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 + +// The the extern template ABI lists are kept outside of <string> to improve the +// readability of that header. + +// The extern template ABI lists are kept outside of <string> to improve the +// readability of that header. We maintain 2 ABI lists: +// - _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST +// - _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST +// As the name implies, the ABI lists define the V1 (Stable) and unstable ABI. +// +// For unstable, we may explicitly remove function that are external in V1, +// and add (new) external functions to better control inlining and compiler +// optimization opportunities. +// +// For stable, the ABI list should rarely change, except for adding new +// functions supporting new c++ version / API changes. Typically entries +// must never be removed from the stable list. +#define _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_Func, _CharType) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::rfind(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(value_type const*, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::basic_string(basic_string const&)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::basic_string(basic_string const&, allocator<_CharType> const&)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_last_not_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::~basic_string()) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_first_not_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::operator=(value_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS const _CharType& basic_string<_CharType>::at(size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_first_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::reserve(size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::copy(value_type*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::basic_string(basic_string const&, size_type, size_type, allocator<_CharType> const&)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find(value_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_last_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__grow_by(size_type, size_type, size_type, size_type, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__grow_by_and_replace(size_type, size_type, size_type, size_type, size_type, size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::push_back(value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::rfind(value_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS const basic_string<_CharType>::size_type basic_string<_CharType>::npos) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::erase(size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(value_type const*) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, value_type const*) const) \ + _Func(_LIBCPP_FUNC_VIS _CharType& basic_string<_CharType>::at(size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, basic_string const&, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, value_type const*, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::operator=(basic_string const&)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::iterator basic_string<_CharType>::insert(basic_string::const_iterator, value_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::resize(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, basic_string const&, size_type, size_type)) + +#define _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_Func, _CharType) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::rfind(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(value_type const*, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_last_not_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::~basic_string()) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_first_not_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::operator=(value_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init_copy_ctor_external(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS const _CharType& basic_string<_CharType>::at(size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_first_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::__assign_external(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::__assign_external(value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::reserve(size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::copy(value_type*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::basic_string(basic_string const&, size_type, size_type, allocator<_CharType> const&)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find(value_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__init(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find_last_of(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__grow_by(size_type, size_type, size_type, size_type, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__grow_by_and_replace(size_type, size_type, size_type, size_type, size_type, size_type, value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::__assign_no_alias<false>(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::__assign_no_alias<true>(value_type const*, size_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::push_back(value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::rfind(value_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS const basic_string<_CharType>::size_type basic_string<_CharType>::npos) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::assign(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::__erase_external_with_move(size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(value_type const*) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, value_type const*) const) \ + _Func(_LIBCPP_FUNC_VIS _CharType& basic_string<_CharType>::at(size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::size_type basic_string<_CharType>::find(value_type const*, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, basic_string const&, size_type, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS int basic_string<_CharType>::compare(size_type, size_type, value_type const*, size_type) const) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::append(value_type const*)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::replace(size_type, size_type, basic_string const&, size_type, size_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>::iterator basic_string<_CharType>::insert(basic_string::const_iterator, value_type)) \ + _Func(_LIBCPP_FUNC_VIS void basic_string<_CharType>::resize(size_type, value_type)) \ + _Func(_LIBCPP_FUNC_VIS basic_string<_CharType>& basic_string<_CharType>::insert(size_type, basic_string const&, size_type, size_type)) + + +// char_traits + +template <class _CharT> +struct _LIBCPP_TEMPLATE_VIS char_traits +{ + typedef _CharT char_type; + typedef int int_type; + typedef streamoff off_type; + typedef streampos pos_type; + typedef mbstate_t state_type; + + static inline void _LIBCPP_CONSTEXPR_AFTER_CXX14 + assign(char_type& __c1, const char_type& __c2) _NOEXCEPT {__c1 = __c2;} + static inline _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 < __c2;} + + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + int compare(const char_type* __s1, const char_type* __s2, size_t __n); + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + size_t length(const char_type* __s); + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + const char_type* find(const char_type* __s, size_t __n, const char_type& __a); + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* move(char_type* __s1, const char_type* __s2, size_t __n); + _LIBCPP_INLINE_VISIBILITY + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* copy(char_type* __s1, const char_type* __s2, size_t __n); + _LIBCPP_INLINE_VISIBILITY + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* assign(char_type* __s, size_t __n, char_type __a); + + static inline _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT + {return char_type(__c);} + static inline _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT + {return int_type(__c);} + static inline _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT + {return int_type(EOF);} +}; + +template <class _CharT> +_LIBCPP_CONSTEXPR_AFTER_CXX14 int +char_traits<_CharT>::compare(const char_type* __s1, const char_type* __s2, size_t __n) +{ + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +} + +template <class _CharT> +inline +_LIBCPP_CONSTEXPR_AFTER_CXX14 size_t +char_traits<_CharT>::length(const char_type* __s) +{ + size_t __len = 0; + for (; !eq(*__s, char_type(0)); ++__s) + ++__len; + return __len; +} + +template <class _CharT> +inline +_LIBCPP_CONSTEXPR_AFTER_CXX14 const _CharT* +char_traits<_CharT>::find(const char_type* __s, size_t __n, const char_type& __a) +{ + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +} + +template <class _CharT> +_LIBCPP_CONSTEXPR_AFTER_CXX17 _CharT* +char_traits<_CharT>::move(char_type* __s1, const char_type* __s2, size_t __n) +{ + if (__n == 0) return __s1; + char_type* __r = __s1; + if (__s1 < __s2) + { + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + } + else if (__s2 < __s1) + { + __s1 += __n; + __s2 += __n; + for (; __n; --__n) + assign(*--__s1, *--__s2); + } + return __r; +} + +template <class _CharT> +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +_CharT* +char_traits<_CharT>::copy(char_type* __s1, const char_type* __s2, size_t __n) +{ + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + char_type* __r = __s1; + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + return __r; +} + +template <class _CharT> +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +_CharT* +char_traits<_CharT>::assign(char_type* __s, size_t __n, char_type __a) +{ + char_type* __r = __s; + for (; __n; --__n, ++__s) + assign(*__s, __a); + return __r; +} + +// constexpr versions of move/copy/assign. + +template <class _CharT> +static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +_CharT* __move_constexpr(_CharT* __s1, const _CharT* __s2, size_t __n) _NOEXCEPT +{ + if (__n == 0) return __s1; + if (__s1 < __s2) { + _VSTD::copy(__s2, __s2 + __n, __s1); + } else if (__s2 < __s1) { + _VSTD::copy_backward(__s2, __s2 + __n, __s1 + __n); + } + return __s1; +} + +template <class _CharT> +static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +_CharT* __copy_constexpr(_CharT* __s1, const _CharT* __s2, size_t __n) _NOEXCEPT +{ + _VSTD::copy_n(__s2, __n, __s1); + return __s1; +} + +template <class _CharT> +static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +_CharT* __assign_constexpr(_CharT* __s, size_t __n, _CharT __a) _NOEXCEPT +{ + _VSTD::fill_n(__s, __n, __a); + return __s; +} + +// char_traits<char> + +template <> +struct _LIBCPP_TEMPLATE_VIS char_traits<char> +{ + typedef char char_type; + typedef int int_type; + typedef streamoff off_type; + typedef streampos pos_type; + typedef mbstate_t state_type; + + static inline _LIBCPP_CONSTEXPR_AFTER_CXX14 + void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT {__c1 = __c2;} + static inline _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT + {return (unsigned char)__c1 < (unsigned char)__c2;} + + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + static inline size_t _LIBCPP_CONSTEXPR_AFTER_CXX14 + length(const char_type* __s) _NOEXCEPT {return __builtin_strlen(__s);} + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + const char_type* find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT; + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__move_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : (char_type*)_VSTD::memmove(__s1, __s2, __n); + } + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + return __libcpp_is_constant_evaluated() + ? _VSTD::__copy_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : (char_type*)_VSTD::memcpy(__s1, __s2, __n); + } + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__assign_constexpr(__s, __n, __a) + : __n == 0 ? __s : (char_type*)_VSTD::memset(__s, to_int_type(__a), __n); + } + + static inline _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT + {return char_type(__c);} + static inline _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT + {return int_type((unsigned char)__c);} + static inline _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT + {return int_type(EOF);} +}; + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +int +char_traits<char>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + if (__n == 0) + return 0; +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_memcmp(__s1, __s2, __n); +#elif _LIBCPP_STD_VER <= 14 + return _VSTD::memcmp(__s1, __s2, __n); +#else + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +#endif +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +const char* +char_traits<char>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT +{ + if (__n == 0) + return nullptr; +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_char_memchr(__s, to_int_type(__a), __n); +#elif _LIBCPP_STD_VER <= 14 + return (const char_type*) _VSTD::memchr(__s, to_int_type(__a), __n); +#else + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +#endif +} + + +// char_traits<wchar_t> + +template <> +struct _LIBCPP_TEMPLATE_VIS char_traits<wchar_t> +{ + typedef wchar_t char_type; + typedef wint_t int_type; + typedef streamoff off_type; + typedef streampos pos_type; + typedef mbstate_t state_type; + + static inline _LIBCPP_CONSTEXPR_AFTER_CXX14 + void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT {__c1 = __c2;} + static inline _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 < __c2;} + + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + size_t length(const char_type* __s) _NOEXCEPT; + static _LIBCPP_CONSTEXPR_AFTER_CXX14 + const char_type* find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT; + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__move_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : _VSTD::wmemmove(__s1, __s2, __n); + } + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + return __libcpp_is_constant_evaluated() + ? _VSTD::__copy_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : _VSTD::wmemcpy(__s1, __s2, __n); + } + static inline _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__assign_constexpr(__s, __n, __a) + : __n == 0 ? __s : _VSTD::wmemset(__s, __a, __n); + } + static inline _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT + {return char_type(__c);} + static inline _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT + {return int_type(__c);} + static inline _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT + {return int_type(WEOF);} +}; + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +int +char_traits<wchar_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + if (__n == 0) + return 0; +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_wmemcmp(__s1, __s2, __n); +#elif _LIBCPP_STD_VER <= 14 + return _VSTD::wmemcmp(__s1, __s2, __n); +#else + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +#endif +} + + +template <class _Traits> +_LIBCPP_INLINE_VISIBILITY +_LIBCPP_CONSTEXPR +inline size_t __char_traits_length_checked(const typename _Traits::char_type* __s) _NOEXCEPT { +#if _LIBCPP_DEBUG_LEVEL >= 1 + return __s ? _Traits::length(__s) : (_VSTD::__libcpp_debug_function(_VSTD::__libcpp_debug_info(__FILE__, __LINE__, "p == nullptr", "null pointer pass to non-null argument of char_traits<...>::length")), 0); +#else + return _Traits::length(__s); +#endif +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +size_t +char_traits<wchar_t>::length(const char_type* __s) _NOEXCEPT +{ +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_wcslen(__s); +#elif _LIBCPP_STD_VER <= 14 + return _VSTD::wcslen(__s); +#else + size_t __len = 0; + for (; !eq(*__s, char_type(0)); ++__s) + ++__len; + return __len; +#endif +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +const wchar_t* +char_traits<wchar_t>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT +{ + if (__n == 0) + return nullptr; +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_wmemchr(__s, __a, __n); +#elif _LIBCPP_STD_VER <= 14 + return _VSTD::wmemchr(__s, __a, __n); +#else + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +#endif +} + + +#ifndef _LIBCPP_HAS_NO_CHAR8_T + +template <> +struct _LIBCPP_TEMPLATE_VIS char_traits<char8_t> +{ + typedef char8_t char_type; + typedef unsigned int int_type; + typedef streamoff off_type; + typedef u8streampos pos_type; + typedef mbstate_t state_type; + + static inline constexpr void assign(char_type& __c1, const char_type& __c2) noexcept + {__c1 = __c2;} + static inline constexpr bool eq(char_type __c1, char_type __c2) noexcept + {return __c1 == __c2;} + static inline constexpr bool lt(char_type __c1, char_type __c2) noexcept + {return __c1 < __c2;} + + static constexpr + int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + + static constexpr + size_t length(const char_type* __s) _NOEXCEPT; + + _LIBCPP_INLINE_VISIBILITY static constexpr + const char_type* find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT; + + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__move_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : (char_type*)_VSTD::memmove(__s1, __s2, __n); + } + + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT + { + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + return __libcpp_is_constant_evaluated() + ? _VSTD::__copy_constexpr(__s1, __s2, __n) + : __n == 0 ? __s1 : (char_type*)_VSTD::memcpy(__s1, __s2, __n); + } + + static _LIBCPP_CONSTEXPR_AFTER_CXX17 + char_type* assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT + { + return __libcpp_is_constant_evaluated() + ? _VSTD::__assign_constexpr(__s, __n, __a) + : __n == 0 ? __s : (char_type*)_VSTD::memset(__s, to_int_type(__a), __n); + } + + static inline constexpr int_type not_eof(int_type __c) noexcept + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline constexpr char_type to_char_type(int_type __c) noexcept + {return char_type(__c);} + static inline constexpr int_type to_int_type(char_type __c) noexcept + {return int_type(__c);} + static inline constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept + {return __c1 == __c2;} + static inline constexpr int_type eof() noexcept + {return int_type(EOF);} +}; + +// TODO use '__builtin_strlen' if it ever supports char8_t ?? +inline constexpr +size_t +char_traits<char8_t>::length(const char_type* __s) _NOEXCEPT +{ + size_t __len = 0; + for (; !eq(*__s, char_type(0)); ++__s) + ++__len; + return __len; +} + +inline constexpr +int +char_traits<char8_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ +#if __has_feature(cxx_constexpr_string_builtins) + return __builtin_memcmp(__s1, __s2, __n); +#else + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +#endif +} + +// TODO use '__builtin_char_memchr' if it ever supports char8_t ?? +inline constexpr +const char8_t* +char_traits<char8_t>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT +{ + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +} + +#endif // #_LIBCPP_HAS_NO_CHAR8_T + +#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS + +template <> +struct _LIBCPP_TEMPLATE_VIS char_traits<char16_t> +{ + typedef char16_t char_type; + typedef uint_least16_t int_type; + typedef streamoff off_type; + typedef u16streampos pos_type; + typedef mbstate_t state_type; + + static inline _LIBCPP_CONSTEXPR_AFTER_CXX14 + void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT {__c1 = __c2;} + static inline _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 < __c2;} + + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + size_t length(const char_type* __s) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + const char_type* find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT; + + static inline _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT + {return char_type(__c);} + static inline _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT + {return int_type(__c);} + static inline _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT + {return int_type(0xFFFF);} +}; + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +int +char_traits<char16_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +size_t +char_traits<char16_t>::length(const char_type* __s) _NOEXCEPT +{ + size_t __len = 0; + for (; !eq(*__s, char_type(0)); ++__s) + ++__len; + return __len; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +const char16_t* +char_traits<char16_t>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT +{ + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char16_t* +char_traits<char16_t>::move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + if (__n == 0) return __s1; + char_type* __r = __s1; + if (__s1 < __s2) + { + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + } + else if (__s2 < __s1) + { + __s1 += __n; + __s2 += __n; + for (; __n; --__n) + assign(*--__s1, *--__s2); + } + return __r; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char16_t* +char_traits<char16_t>::copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + char_type* __r = __s1; + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + return __r; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char16_t* +char_traits<char16_t>::assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT +{ + char_type* __r = __s; + for (; __n; --__n, ++__s) + assign(*__s, __a); + return __r; +} + +template <> +struct _LIBCPP_TEMPLATE_VIS char_traits<char32_t> +{ + typedef char32_t char_type; + typedef uint_least32_t int_type; + typedef streamoff off_type; + typedef u32streampos pos_type; + typedef mbstate_t state_type; + + static inline _LIBCPP_CONSTEXPR_AFTER_CXX14 + void assign(char_type& __c1, const char_type& __c2) _NOEXCEPT {__c1 = __c2;} + static inline _LIBCPP_CONSTEXPR bool eq(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR bool lt(char_type __c1, char_type __c2) _NOEXCEPT + {return __c1 < __c2;} + + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + int compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + size_t length(const char_type* __s) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR_AFTER_CXX14 + const char_type* find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 + static char_type* assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT; + + static inline _LIBCPP_CONSTEXPR int_type not_eof(int_type __c) _NOEXCEPT + {return eq_int_type(__c, eof()) ? ~eof() : __c;} + static inline _LIBCPP_CONSTEXPR char_type to_char_type(int_type __c) _NOEXCEPT + {return char_type(__c);} + static inline _LIBCPP_CONSTEXPR int_type to_int_type(char_type __c) _NOEXCEPT + {return int_type(__c);} + static inline _LIBCPP_CONSTEXPR bool eq_int_type(int_type __c1, int_type __c2) _NOEXCEPT + {return __c1 == __c2;} + static inline _LIBCPP_CONSTEXPR int_type eof() _NOEXCEPT + {return int_type(0xFFFFFFFF);} +}; + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +int +char_traits<char32_t>::compare(const char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + for (; __n; --__n, ++__s1, ++__s2) + { + if (lt(*__s1, *__s2)) + return -1; + if (lt(*__s2, *__s1)) + return 1; + } + return 0; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +size_t +char_traits<char32_t>::length(const char_type* __s) _NOEXCEPT +{ + size_t __len = 0; + for (; !eq(*__s, char_type(0)); ++__s) + ++__len; + return __len; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX14 +const char32_t* +char_traits<char32_t>::find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT +{ + for (; __n; --__n) + { + if (eq(*__s, __a)) + return __s; + ++__s; + } + return nullptr; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char32_t* +char_traits<char32_t>::move(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + if (__n == 0) return __s1; + char_type* __r = __s1; + if (__s1 < __s2) + { + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + } + else if (__s2 < __s1) + { + __s1 += __n; + __s2 += __n; + for (; __n; --__n) + assign(*--__s1, *--__s2); + } + return __r; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char32_t* +char_traits<char32_t>::copy(char_type* __s1, const char_type* __s2, size_t __n) _NOEXCEPT +{ + _LIBCPP_ASSERT(__s2 < __s1 || __s2 >= __s1+__n, "char_traits::copy overlapped range"); + char_type* __r = __s1; + for (; __n; --__n, ++__s1, ++__s2) + assign(*__s1, *__s2); + return __r; +} + +inline _LIBCPP_CONSTEXPR_AFTER_CXX17 +char32_t* +char_traits<char32_t>::assign(char_type* __s, size_t __n, char_type __a) _NOEXCEPT +{ + char_type* __r = __s; + for (; __n; --__n, ++__s) + assign(*__s, __a); + return __r; +} + +#endif // _LIBCPP_HAS_NO_UNICODE_CHARS + +// helper fns for basic_string and string_view + +// __str_find +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find(const _CharT *__p, _SizeT __sz, + _CharT __c, _SizeT __pos) _NOEXCEPT +{ + if (__pos >= __sz) + return __npos; + const _CharT* __r = _Traits::find(__p + __pos, __sz - __pos, __c); + if (__r == nullptr) + return __npos; + return static_cast<_SizeT>(__r - __p); +} + +template <class _CharT, class _Traits> +inline _LIBCPP_CONSTEXPR_AFTER_CXX11 const _CharT * +__search_substring(const _CharT *__first1, const _CharT *__last1, + const _CharT *__first2, const _CharT *__last2) _NOEXCEPT { + // Take advantage of knowing source and pattern lengths. + // Stop short when source is smaller than pattern. + const ptrdiff_t __len2 = __last2 - __first2; + if (__len2 == 0) + return __first1; + + ptrdiff_t __len1 = __last1 - __first1; + if (__len1 < __len2) + return __last1; + + // First element of __first2 is loop invariant. + _CharT __f2 = *__first2; + while (true) { + __len1 = __last1 - __first1; + // Check whether __first1 still has at least __len2 bytes. + if (__len1 < __len2) + return __last1; + + // Find __f2 the first byte matching in __first1. + __first1 = _Traits::find(__first1, __len1 - __len2 + 1, __f2); + if (__first1 == nullptr) + return __last1; + + // It is faster to compare from the first byte of __first1 even if we + // already know that it matches the first byte of __first2: this is because + // __first2 is most likely aligned, as it is user's "pattern" string, and + // __first1 + 1 is most likely not aligned, as the match is in the middle of + // the string. + if (_Traits::compare(__first1, __first2, __len2) == 0) + return __first1; + + ++__first1; + } +} + +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT +{ + if (__pos > __sz) + return __npos; + + if (__n == 0) // There is nothing to search, just return __pos. + return __pos; + + const _CharT *__r = __search_substring<_CharT, _Traits>( + __p + __pos, __p + __sz, __s, __s + __n); + + if (__r == __p + __sz) + return __npos; + return static_cast<_SizeT>(__r - __p); +} + + +// __str_rfind + +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_rfind(const _CharT *__p, _SizeT __sz, + _CharT __c, _SizeT __pos) _NOEXCEPT +{ + if (__sz < 1) + return __npos; + if (__pos < __sz) + ++__pos; + else + __pos = __sz; + for (const _CharT* __ps = __p + __pos; __ps != __p;) + { + if (_Traits::eq(*--__ps, __c)) + return static_cast<_SizeT>(__ps - __p); + } + return __npos; +} + +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_rfind(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT +{ + __pos = _VSTD::min(__pos, __sz); + if (__n < __sz - __pos) + __pos += __n; + else + __pos = __sz; + const _CharT* __r = _VSTD::__find_end( + __p, __p + __pos, __s, __s + __n, _Traits::eq, + random_access_iterator_tag(), random_access_iterator_tag()); + if (__n > 0 && __r == __p + __pos) + return __npos; + return static_cast<_SizeT>(__r - __p); +} + +// __str_find_first_of +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_first_of(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT +{ + if (__pos >= __sz || __n == 0) + return __npos; + const _CharT* __r = _VSTD::__find_first_of_ce + (__p + __pos, __p + __sz, __s, __s + __n, _Traits::eq ); + if (__r == __p + __sz) + return __npos; + return static_cast<_SizeT>(__r - __p); +} + + +// __str_find_last_of +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_last_of(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT + { + if (__n != 0) + { + if (__pos < __sz) + ++__pos; + else + __pos = __sz; + for (const _CharT* __ps = __p + __pos; __ps != __p;) + { + const _CharT* __r = _Traits::find(__s, __n, *--__ps); + if (__r) + return static_cast<_SizeT>(__ps - __p); + } + } + return __npos; +} + + +// __str_find_first_not_of +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_first_not_of(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT +{ + if (__pos < __sz) + { + const _CharT* __pe = __p + __sz; + for (const _CharT* __ps = __p + __pos; __ps != __pe; ++__ps) + if (_Traits::find(__s, __n, *__ps) == nullptr) + return static_cast<_SizeT>(__ps - __p); + } + return __npos; +} + + +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_first_not_of(const _CharT *__p, _SizeT __sz, + _CharT __c, _SizeT __pos) _NOEXCEPT +{ + if (__pos < __sz) + { + const _CharT* __pe = __p + __sz; + for (const _CharT* __ps = __p + __pos; __ps != __pe; ++__ps) + if (!_Traits::eq(*__ps, __c)) + return static_cast<_SizeT>(__ps - __p); + } + return __npos; +} + + +// __str_find_last_not_of +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_last_not_of(const _CharT *__p, _SizeT __sz, + const _CharT* __s, _SizeT __pos, _SizeT __n) _NOEXCEPT +{ + if (__pos < __sz) + ++__pos; + else + __pos = __sz; + for (const _CharT* __ps = __p + __pos; __ps != __p;) + if (_Traits::find(__s, __n, *--__ps) == nullptr) + return static_cast<_SizeT>(__ps - __p); + return __npos; +} + + +template<class _CharT, class _SizeT, class _Traits, _SizeT __npos> +inline _SizeT _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY +__str_find_last_not_of(const _CharT *__p, _SizeT __sz, + _CharT __c, _SizeT __pos) _NOEXCEPT +{ + if (__pos < __sz) + ++__pos; + else + __pos = __sz; + for (const _CharT* __ps = __p + __pos; __ps != __p;) + if (!_Traits::eq(*--__ps, __c)) + return static_cast<_SizeT>(__ps - __p); + return __npos; +} + +template<class _Ptr> +inline _LIBCPP_INLINE_VISIBILITY +size_t __do_string_hash(_Ptr __p, _Ptr __e) +{ + typedef typename iterator_traits<_Ptr>::value_type value_type; + return __murmur2_or_cityhash<size_t>()(__p, (__e-__p)*sizeof(value_type)); +} + +template <class _CharT, class _Iter, class _Traits=char_traits<_CharT> > +struct __quoted_output_proxy +{ + _Iter __first; + _Iter __last; + _CharT __delim; + _CharT __escape; + + __quoted_output_proxy(_Iter __f, _Iter __l, _CharT __d, _CharT __e) + : __first(__f), __last(__l), __delim(__d), __escape(__e) {} + // This would be a nice place for a string_ref +}; + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___STRING |