diff options
Diffstat (limited to 'gdbsupport/gdb_string_view.h')
| -rw-r--r-- | gdbsupport/gdb_string_view.h | 1014 |
1 files changed, 527 insertions, 487 deletions
diff --git a/gdbsupport/gdb_string_view.h b/gdbsupport/gdb_string_view.h index 26a3a9f..968ef11 100644 --- a/gdbsupport/gdb_string_view.h +++ b/gdbsupport/gdb_string_view.h @@ -1,6 +1,5 @@ // Components for manipulating non-owning sequences of characters -*- C++ -*- - #ifndef COMMON_GDB_STRING_VIEW_H #define COMMON_GDB_STRING_VIEW_H @@ -33,13 +32,13 @@ // N3762 basic_string_view library // - #if __cplusplus >= 201703L #include <string_view> -namespace gdb { - using string_view = std::string_view; +namespace gdb +{ +using string_view = std::string_view; } /* namespace gdb */ #else /* __cplusplus < 201703L */ @@ -48,9 +47,10 @@ namespace gdb { #include <limits> #include "gdb_assert.h" -namespace gdb { +namespace gdb +{ - /** +/** * @class basic_string_view <experimental/string_view> * @brief A non-owning reference to a string. * @@ -69,498 +69,538 @@ namespace gdb { * size_t _M_len * @endcode */ - template<typename _CharT, typename _Traits = std::char_traits<_CharT>> - class basic_string_view - { - public: - - // types - using traits_type = _Traits; - using value_type = _CharT; - using pointer = const _CharT*; - using const_pointer = const _CharT*; - using reference = const _CharT&; - using const_reference = const _CharT&; - using const_iterator = const _CharT*; - using iterator = const_iterator; - using const_reverse_iterator = std::reverse_iterator<const_iterator>; - using reverse_iterator = const_reverse_iterator; - using size_type = size_t; - using difference_type = ptrdiff_t; - static constexpr size_type npos = size_type(-1); - - // [string.view.cons], construct/copy - - constexpr - basic_string_view() noexcept - : _M_len{0}, _M_str{nullptr} - { } - - constexpr basic_string_view(const basic_string_view&) noexcept = default; - - template<typename _Allocator> - basic_string_view(const std::basic_string<_CharT, _Traits, - _Allocator>& __str) noexcept - : _M_len{__str.length()}, _M_str{__str.data()} - { } - - /*constexpr*/ basic_string_view(const _CharT* __str) - : _M_len{__str == nullptr ? 0 : traits_type::length(__str)}, - _M_str{__str} - { } - - constexpr basic_string_view(const _CharT* __str, size_type __len) - : _M_len{__len}, - _M_str{__str} - { } - - basic_string_view& - operator=(const basic_string_view&) noexcept = default; - - // [string.view.iterators], iterators - - constexpr const_iterator - begin() const noexcept - { return this->_M_str; } - - constexpr const_iterator - end() const noexcept - { return this->_M_str + this->_M_len; } - - constexpr const_iterator - cbegin() const noexcept - { return this->_M_str; } - - constexpr const_iterator - cend() const noexcept - { return this->_M_str + this->_M_len; } - - const_reverse_iterator - rbegin() const noexcept - { return const_reverse_iterator(this->end()); } - - const_reverse_iterator - rend() const noexcept - { return const_reverse_iterator(this->begin()); } - - const_reverse_iterator - crbegin() const noexcept - { return const_reverse_iterator(this->end()); } - - const_reverse_iterator - crend() const noexcept - { return const_reverse_iterator(this->begin()); } - - // [string.view.capacity], capacity - - constexpr size_type - size() const noexcept - { return this->_M_len; } - - constexpr size_type - length() const noexcept - { return _M_len; } - - constexpr size_type - max_size() const noexcept - { - return (npos - sizeof(size_type) - sizeof(void*)) - / sizeof(value_type) / 4; - } - - constexpr bool - empty() const noexcept - { return this->_M_len == 0; } - - // [string.view.access], element access - - constexpr const _CharT& - operator[](size_type __pos) const - { - // TODO: Assert to restore in a way compatible with the constexpr. - // __glibcxx_assert(__pos < this->_M_len); - return *(this->_M_str + __pos); - } - - constexpr const _CharT& - at(size_type __pos) const - { - return __pos < this->_M_len - ? *(this->_M_str + __pos) - : (error (_("basic_string_view::at: __pos " - "(which is %zu) >= this->size() " - "(which is %zu)"), - __pos, this->size()), - *this->_M_str); - } - - constexpr const _CharT& - front() const - { - // TODO: Assert to restore in a way compatible with the constexpr. - // __glibcxx_assert(this->_M_len > 0); - return *this->_M_str; - } - - constexpr const _CharT& - back() const - { - // TODO: Assert to restore in a way compatible with the constexpr. - // __glibcxx_assert(this->_M_len > 0); - return *(this->_M_str + this->_M_len - 1); - } - - constexpr const _CharT* - data() const noexcept - { return this->_M_str; } - - // [string.view.modifiers], modifiers: - - /*constexpr*/ void - remove_prefix(size_type __n) - { - gdb_assert (this->_M_len >= __n); - this->_M_str += __n; - this->_M_len -= __n; - } - - /*constexpr*/ void - remove_suffix(size_type __n) - { this->_M_len -= __n; } - - /*constexpr*/ void - swap(basic_string_view& __sv) noexcept - { - auto __tmp = *this; - *this = __sv; - __sv = __tmp; - } - - - // [string.view.ops], string operations: - - template<typename _Allocator> - explicit operator std::basic_string<_CharT, _Traits, _Allocator>() const - { - return { this->_M_str, this->_M_len }; - } - - size_type - copy(_CharT* __str, size_type __n, size_type __pos = 0) const - { - gdb_assert (__str != nullptr || __n == 0); - if (__pos > this->_M_len) - error (_("basic_string_view::copy: __pos " - "(which is %zu) > this->size() " - "(which is %zu)"), - __pos, this->size()); - size_type __rlen{std::min(__n, size_type{this->_M_len - __pos})}; - for (auto __begin = this->_M_str + __pos, - __end = __begin + __rlen; __begin != __end;) - *__str++ = *__begin++; - return __rlen; - } - - - // [string.view.ops], string operations: - - /*constexpr*/ basic_string_view - substr(size_type __pos, size_type __n=npos) const - { - return __pos <= this->_M_len - ? basic_string_view{this->_M_str + __pos, - std::min(__n, size_type{this->_M_len - __pos})} - : (error (_("basic_string_view::substr: __pos " - "(which is %zu) > this->size() " - "(which is %zu)"), - __pos, this->size()), basic_string_view{}); - } - - /*constexpr*/ int - compare(basic_string_view __str) const noexcept - { - int __ret = traits_type::compare(this->_M_str, __str._M_str, - std::min(this->_M_len, __str._M_len)); - if (__ret == 0) - __ret = _S_compare(this->_M_len, __str._M_len); - return __ret; - } - - /*constexpr*/ int - compare(size_type __pos1, size_type __n1, basic_string_view __str) const - { return this->substr(__pos1, __n1).compare(__str); } - - /*constexpr*/ int - compare(size_type __pos1, size_type __n1, - basic_string_view __str, size_type __pos2, size_type __n2) const - { return this->substr(__pos1, __n1).compare(__str.substr(__pos2, __n2)); } - - /*constexpr*/ int - compare(const _CharT* __str) const noexcept - { return this->compare(basic_string_view{__str}); } - - /*constexpr*/ int - compare(size_type __pos1, size_type __n1, const _CharT* __str) const - { return this->substr(__pos1, __n1).compare(basic_string_view{__str}); } - - /*constexpr*/ int - compare(size_type __pos1, size_type __n1, - const _CharT* __str, size_type __n2) const - { - return this->substr(__pos1, __n1) - .compare(basic_string_view(__str, __n2)); - } - - /*constexpr*/ size_type - find(basic_string_view __str, size_type __pos = 0) const noexcept - { return this->find(__str._M_str, __pos, __str._M_len); } - - /*constexpr*/ size_type - find(_CharT __c, size_type __pos=0) const noexcept; - - /*constexpr*/ size_type - find(const _CharT* __str, size_type __pos, size_type __n) const noexcept; - - /*constexpr*/ size_type - find(const _CharT* __str, size_type __pos=0) const noexcept - { return this->find(__str, __pos, traits_type::length(__str)); } - - /*constexpr*/ size_type - rfind(basic_string_view __str, size_type __pos = npos) const noexcept - { return this->rfind(__str._M_str, __pos, __str._M_len); } - - /*constexpr*/ size_type - rfind(_CharT __c, size_type __pos = npos) const noexcept; - - /*constexpr*/ size_type - rfind(const _CharT* __str, size_type __pos, size_type __n) const noexcept; - - /*constexpr*/ size_type - rfind(const _CharT* __str, size_type __pos = npos) const noexcept - { return this->rfind(__str, __pos, traits_type::length(__str)); } - - /*constexpr*/ size_type - find_first_of(basic_string_view __str, size_type __pos = 0) const noexcept - { return this->find_first_of(__str._M_str, __pos, __str._M_len); } - - /*constexpr*/ size_type - find_first_of(_CharT __c, size_type __pos = 0) const noexcept - { return this->find(__c, __pos); } - - /*constexpr*/ size_type - find_first_of(const _CharT* __str, size_type __pos, size_type __n) const; - - /*constexpr*/ size_type - find_first_of(const _CharT* __str, size_type __pos = 0) const noexcept - { return this->find_first_of(__str, __pos, traits_type::length(__str)); } - - /*constexpr*/ size_type - find_last_of(basic_string_view __str, - size_type __pos = npos) const noexcept - { return this->find_last_of(__str._M_str, __pos, __str._M_len); } - - size_type - find_last_of(_CharT __c, size_type __pos=npos) const noexcept - { return this->rfind(__c, __pos); } - - /*constexpr*/ size_type - find_last_of(const _CharT* __str, size_type __pos, size_type __n) const; - - /*constexpr*/ size_type - find_last_of(const _CharT* __str, size_type __pos = npos) const noexcept - { return this->find_last_of(__str, __pos, traits_type::length(__str)); } - - /*constexpr*/ size_type - find_first_not_of(basic_string_view __str, - size_type __pos = 0) const noexcept - { return this->find_first_not_of(__str._M_str, __pos, __str._M_len); } - - /*constexpr*/ size_type - find_first_not_of(_CharT __c, size_type __pos = 0) const noexcept; - - /*constexpr*/ size_type - find_first_not_of(const _CharT* __str, - size_type __pos, size_type __n) const; - - /*constexpr*/ size_type - find_first_not_of(const _CharT* __str, size_type __pos = 0) const noexcept - { - return this->find_first_not_of(__str, __pos, - traits_type::length(__str)); - } - - /*constexpr*/ size_type - find_last_not_of(basic_string_view __str, - size_type __pos = npos) const noexcept - { return this->find_last_not_of(__str._M_str, __pos, __str._M_len); } - - /*constexpr*/ size_type - find_last_not_of(_CharT __c, size_type __pos = npos) const noexcept; - - /*constexpr*/ size_type - find_last_not_of(const _CharT* __str, - size_type __pos, size_type __n) const; - - /*constexpr*/ size_type - find_last_not_of(const _CharT* __str, - size_type __pos = npos) const noexcept - { - return this->find_last_not_of(__str, __pos, - traits_type::length(__str)); - } - - private: - - static constexpr int - _S_compare(size_type __n1, size_type __n2) noexcept - { - return difference_type(__n1 - __n2) > std::numeric_limits<int>::max() - ? std::numeric_limits<int>::max() - : difference_type(__n1 - __n2) < std::numeric_limits<int>::min() - ? std::numeric_limits<int>::min() - : static_cast<int>(difference_type(__n1 - __n2)); - } - - size_t _M_len; - const _CharT* _M_str; - }; - - // [string.view.comparison], non-member basic_string_view comparison functions - - namespace __detail - { - // Identity transform to create a non-deduced context, so that only one - // argument participates in template argument deduction and the other - // argument gets implicitly converted to the deduced type. See n3766.html. - template<typename _Tp> - using __idt = typename std::common_type<_Tp>::type; - } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator==(basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.size() == __y.size() && __x.compare(__y) == 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator==(basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return __x.size() == __y.size() && __x.compare(__y) == 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator==(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.size() == __y.size() && __x.compare(__y) == 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator!=(basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return !(__x == __y); } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator!=(basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return !(__x == __y); } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator!=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return !(__x == __y); } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator< (basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) < 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator< (basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return __x.compare(__y) < 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator< (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) < 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator> (basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) > 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator> (basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return __x.compare(__y) > 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator> (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) > 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator<=(basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) <= 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator<=(basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return __x.compare(__y) <= 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator<=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) <= 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator>=(basic_string_view<_CharT, _Traits> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) >= 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator>=(basic_string_view<_CharT, _Traits> __x, - __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept - { return __x.compare(__y) >= 0; } - - template<typename _CharT, typename _Traits> - /*constexpr*/ bool - operator>=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, - basic_string_view<_CharT, _Traits> __y) noexcept - { return __x.compare(__y) >= 0; } - - // basic_string_view typedef names - - using string_view = basic_string_view<char>; +template<typename _CharT, typename _Traits = std::char_traits<_CharT>> +class basic_string_view +{ +public: + // types + using traits_type = _Traits; + using value_type = _CharT; + using pointer = const _CharT *; + using const_pointer = const _CharT *; + using reference = const _CharT &; + using const_reference = const _CharT &; + using const_iterator = const _CharT *; + using iterator = const_iterator; + using const_reverse_iterator = std::reverse_iterator<const_iterator>; + using reverse_iterator = const_reverse_iterator; + using size_type = size_t; + using difference_type = ptrdiff_t; + static constexpr size_type npos = size_type (-1); + + // [string.view.cons], construct/copy + + constexpr basic_string_view () noexcept : _M_len { 0 }, _M_str { nullptr } {} + + constexpr basic_string_view (const basic_string_view &) noexcept = default; + + template<typename _Allocator> + basic_string_view ( + const std::basic_string<_CharT, _Traits, _Allocator> &__str) noexcept + : _M_len { __str.length () }, + _M_str { __str.data () } + { + } + + /*constexpr*/ basic_string_view (const _CharT *__str) + : _M_len { __str == nullptr ? 0 : traits_type::length (__str) }, + _M_str { __str } + { + } + + constexpr basic_string_view (const _CharT *__str, size_type __len) + : _M_len { __len }, + _M_str { __str } + { + } + + basic_string_view &operator= (const basic_string_view &) noexcept = default; + + // [string.view.iterators], iterators + + constexpr const_iterator begin () const noexcept { return this->_M_str; } + + constexpr const_iterator end () const noexcept + { + return this->_M_str + this->_M_len; + } + + constexpr const_iterator cbegin () const noexcept { return this->_M_str; } + + constexpr const_iterator cend () const noexcept + { + return this->_M_str + this->_M_len; + } + + const_reverse_iterator rbegin () const noexcept + { + return const_reverse_iterator (this->end ()); + } + + const_reverse_iterator rend () const noexcept + { + return const_reverse_iterator (this->begin ()); + } + + const_reverse_iterator crbegin () const noexcept + { + return const_reverse_iterator (this->end ()); + } + + const_reverse_iterator crend () const noexcept + { + return const_reverse_iterator (this->begin ()); + } + + // [string.view.capacity], capacity + + constexpr size_type size () const noexcept { return this->_M_len; } + + constexpr size_type length () const noexcept { return _M_len; } + + constexpr size_type max_size () const noexcept + { + return (npos - sizeof (size_type) - sizeof (void *)) / sizeof (value_type) + / 4; + } + + constexpr bool empty () const noexcept { return this->_M_len == 0; } + + // [string.view.access], element access + + constexpr const _CharT &operator[] (size_type __pos) const + { + // TODO: Assert to restore in a way compatible with the constexpr. + // __glibcxx_assert(__pos < this->_M_len); + return *(this->_M_str + __pos); + } + + constexpr const _CharT &at (size_type __pos) const + { + return __pos < this->_M_len ? *(this->_M_str + __pos) + : (error (_ ("basic_string_view::at: __pos " + "(which is %zu) >= this->size() " + "(which is %zu)"), + __pos, this->size ()), + *this->_M_str); + } + + constexpr const _CharT &front () const + { + // TODO: Assert to restore in a way compatible with the constexpr. + // __glibcxx_assert(this->_M_len > 0); + return *this->_M_str; + } + + constexpr const _CharT &back () const + { + // TODO: Assert to restore in a way compatible with the constexpr. + // __glibcxx_assert(this->_M_len > 0); + return *(this->_M_str + this->_M_len - 1); + } + + constexpr const _CharT *data () const noexcept { return this->_M_str; } + + // [string.view.modifiers], modifiers: + + /*constexpr*/ void remove_prefix (size_type __n) + { + gdb_assert (this->_M_len >= __n); + this->_M_str += __n; + this->_M_len -= __n; + } + + /*constexpr*/ void remove_suffix (size_type __n) { this->_M_len -= __n; } + + /*constexpr*/ void swap (basic_string_view &__sv) noexcept + { + auto __tmp = *this; + *this = __sv; + __sv = __tmp; + } + + // [string.view.ops], string operations: + + template<typename _Allocator> + explicit operator std::basic_string<_CharT, _Traits, _Allocator> () const + { + return { this->_M_str, this->_M_len }; + } + + size_type copy (_CharT *__str, size_type __n, size_type __pos = 0) const + { + gdb_assert (__str != nullptr || __n == 0); + if (__pos > this->_M_len) + error (_ ("basic_string_view::copy: __pos " + "(which is %zu) > this->size() " + "(which is %zu)"), + __pos, this->size ()); + size_type __rlen { std::min (__n, size_type { this->_M_len - __pos }) }; + for (auto __begin = this->_M_str + __pos, __end = __begin + __rlen; + __begin != __end;) + *__str++ = *__begin++; + return __rlen; + } + + // [string.view.ops], string operations: + + /*constexpr*/ basic_string_view substr (size_type __pos, + size_type __n = npos) const + { + return __pos <= this->_M_len + ? basic_string_view { this->_M_str + __pos, + std::min (__n, size_type { this->_M_len + - __pos }) } + : (error (_ ("basic_string_view::substr: __pos " + "(which is %zu) > this->size() " + "(which is %zu)"), + __pos, this->size ()), + basic_string_view {}); + } + + /*constexpr*/ int compare (basic_string_view __str) const noexcept + { + int __ret = traits_type::compare (this->_M_str, __str._M_str, + std::min (this->_M_len, __str._M_len)); + if (__ret == 0) + __ret = _S_compare (this->_M_len, __str._M_len); + return __ret; + } + + /*constexpr*/ int compare (size_type __pos1, size_type __n1, + basic_string_view __str) const + { + return this->substr (__pos1, __n1).compare (__str); + } + + /*constexpr*/ int compare (size_type __pos1, size_type __n1, + basic_string_view __str, size_type __pos2, + size_type __n2) const + { + return this->substr (__pos1, __n1).compare (__str.substr (__pos2, __n2)); + } + + /*constexpr*/ int compare (const _CharT *__str) const noexcept + { + return this->compare (basic_string_view { __str }); + } + + /*constexpr*/ int compare (size_type __pos1, size_type __n1, + const _CharT *__str) const + { + return this->substr (__pos1, __n1).compare (basic_string_view { __str }); + } + + /*constexpr*/ int compare (size_type __pos1, size_type __n1, + const _CharT *__str, size_type __n2) const + { + return this->substr (__pos1, __n1) + .compare (basic_string_view (__str, __n2)); + } + + /*constexpr*/ size_type find (basic_string_view __str, + size_type __pos = 0) const noexcept + { + return this->find (__str._M_str, __pos, __str._M_len); + } + + /*constexpr*/ size_type find (_CharT __c, + size_type __pos = 0) const noexcept; + + /*constexpr*/ size_type find (const _CharT *__str, size_type __pos, + size_type __n) const noexcept; + + /*constexpr*/ size_type find (const _CharT *__str, + size_type __pos = 0) const noexcept + { + return this->find (__str, __pos, traits_type::length (__str)); + } + + /*constexpr*/ size_type rfind (basic_string_view __str, + size_type __pos = npos) const noexcept + { + return this->rfind (__str._M_str, __pos, __str._M_len); + } + + /*constexpr*/ size_type rfind (_CharT __c, + size_type __pos = npos) const noexcept; + + /*constexpr*/ size_type rfind (const _CharT *__str, size_type __pos, + size_type __n) const noexcept; + + /*constexpr*/ size_type rfind (const _CharT *__str, + size_type __pos = npos) const noexcept + { + return this->rfind (__str, __pos, traits_type::length (__str)); + } + + /*constexpr*/ size_type find_first_of (basic_string_view __str, + size_type __pos = 0) const noexcept + { + return this->find_first_of (__str._M_str, __pos, __str._M_len); + } + + /*constexpr*/ size_type find_first_of (_CharT __c, + size_type __pos = 0) const noexcept + { + return this->find (__c, __pos); + } + + /*constexpr*/ size_type find_first_of (const _CharT *__str, size_type __pos, + size_type __n) const; + + /*constexpr*/ size_type find_first_of (const _CharT *__str, + size_type __pos = 0) const noexcept + { + return this->find_first_of (__str, __pos, traits_type::length (__str)); + } + + /*constexpr*/ size_type find_last_of (basic_string_view __str, + size_type __pos = npos) const noexcept + { + return this->find_last_of (__str._M_str, __pos, __str._M_len); + } + + size_type find_last_of (_CharT __c, size_type __pos = npos) const noexcept + { + return this->rfind (__c, __pos); + } + + /*constexpr*/ size_type find_last_of (const _CharT *__str, size_type __pos, + size_type __n) const; + + /*constexpr*/ size_type find_last_of (const _CharT *__str, + size_type __pos = npos) const noexcept + { + return this->find_last_of (__str, __pos, traits_type::length (__str)); + } + + /*constexpr*/ size_type find_first_not_of (basic_string_view __str, + size_type __pos + = 0) const noexcept + { + return this->find_first_not_of (__str._M_str, __pos, __str._M_len); + } + + /*constexpr*/ size_type find_first_not_of (_CharT __c, size_type __pos + = 0) const noexcept; + + /*constexpr*/ size_type find_first_not_of (const _CharT *__str, + size_type __pos, + size_type __n) const; + + /*constexpr*/ size_type + find_first_not_of (const _CharT *__str, size_type __pos = 0) const noexcept + { + return this->find_first_not_of (__str, __pos, traits_type::length (__str)); + } + + /*constexpr*/ size_type find_last_not_of (basic_string_view __str, + size_type __pos + = npos) const noexcept + { + return this->find_last_not_of (__str._M_str, __pos, __str._M_len); + } + + /*constexpr*/ size_type find_last_not_of (_CharT __c, size_type __pos + = npos) const noexcept; + + /*constexpr*/ size_type + find_last_not_of (const _CharT *__str, size_type __pos, size_type __n) const; + + /*constexpr*/ size_type + find_last_not_of (const _CharT *__str, size_type __pos = npos) const noexcept + { + return this->find_last_not_of (__str, __pos, traits_type::length (__str)); + } + +private: + static constexpr int _S_compare (size_type __n1, size_type __n2) noexcept + { + return difference_type (__n1 - __n2) > std::numeric_limits<int>::max () + ? std::numeric_limits<int>::max () + : difference_type (__n1 - __n2) < std::numeric_limits<int>::min () + ? std::numeric_limits<int>::min () + : static_cast<int> (difference_type (__n1 - __n2)); + } + + size_t _M_len; + const _CharT *_M_str; +}; + +// [string.view.comparison], non-member basic_string_view comparison functions + +namespace __detail +{ +// Identity transform to create a non-deduced context, so that only one +// argument participates in template argument deduction and the other +// argument gets implicitly converted to the deduced type. See n3766.html. +template<typename _Tp> +using __idt = typename std::common_type<_Tp>::type; +} // namespace __detail + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator== (basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.size () == __y.size () && __x.compare (__y) == 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator== (basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return __x.size () == __y.size () && __x.compare (__y) == 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator== (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.size () == __y.size () && __x.compare (__y) == 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator!= (basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return !(__x == __y); +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator!= (basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return !(__x == __y); +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator!= (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return !(__x == __y); +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<(basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) < 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<(basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return __x.compare (__y) < 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) < 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator> (basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) > 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator> (basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return __x.compare (__y) > 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator> (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) > 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<= (basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) <= 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<= (basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return __x.compare (__y) <= 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator<= (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) <= 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator>= (basic_string_view<_CharT, _Traits> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) >= 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator>= (basic_string_view<_CharT, _Traits> __x, + __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept +{ + return __x.compare (__y) >= 0; +} + +template<typename _CharT, typename _Traits> +/*constexpr*/ bool +operator>= (__detail::__idt<basic_string_view<_CharT, _Traits>> __x, + basic_string_view<_CharT, _Traits> __y) noexcept +{ + return __x.compare (__y) >= 0; +} + +// basic_string_view typedef names + +using string_view = basic_string_view<char>; } /* namespace gdb */ #include "gdb_string_view.tcc" #endif // __cplusplus < 201703L -namespace gdb { +namespace gdb +{ static inline std::string -to_string(const gdb::string_view &view) +to_string (const gdb::string_view &view) { return { view.data (), view.size () }; } -} +} // namespace gdb #endif /* COMMON_GDB_STRING_VIEW_H */ |