diff options
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/experimental/string_view')
| -rw-r--r-- | gcc-4.9/libstdc++-v3/include/experimental/string_view | 112 |
1 files changed, 49 insertions, 63 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/experimental/string_view b/gcc-4.9/libstdc++-v3/include/experimental/string_view index bebeb6b62..49f46af54 100644 --- a/gcc-4.9/libstdc++-v3/include/experimental/string_view +++ b/gcc-4.9/libstdc++-v3/include/experimental/string_view @@ -39,7 +39,6 @@ # include <bits/c++14_warning.h> #else -#include <debug/debug.h> #include <string> #include <limits> @@ -66,18 +65,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION * _CharT* _M_str * size_t _M_len * @endcode - * - * A basic_string_view represents an empty string with a static constexpr - * length one string: - * - * @code - * static constexpr value_type _S_empty_str[1]{0}; - * @endcode */ - template<typename _CharT, typename _Traits = char_traits<_CharT>> + template<typename _CharT, typename _Traits = std::char_traits<_CharT>> class basic_string_view { - public: // types @@ -99,7 +90,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr basic_string_view() noexcept - : _M_len{0}, _M_str{_S_empty_str} + : _M_len{0}, _M_str{nullptr} { } constexpr basic_string_view(const basic_string_view&) noexcept = default; @@ -112,12 +103,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr basic_string_view(const _CharT* __str) : _M_len{__str == nullptr ? 0 : traits_type::length(__str)}, - _M_str{__str == nullptr ? _S_empty_str : __str} + _M_str{__str} { } constexpr basic_string_view(const _CharT* __str, size_type __len) - : _M_len{__str == nullptr ? 0 :__len}, - _M_str{__str == nullptr ? _S_empty_str : __str} + : _M_len{__len}, + _M_str{__str} { } basic_string_view& @@ -143,19 +134,19 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION const_reverse_iterator rbegin() const noexcept - { return std::reverse_iterator<const_iterator>(this->end()); } + { return const_reverse_iterator(this->end()); } const_reverse_iterator rend() const noexcept - { return std::reverse_iterator<const_iterator>(this->begin()); } + { return const_reverse_iterator(this->begin()); } const_reverse_iterator crbegin() const noexcept - { return std::reverse_iterator<const_iterator>(this->end()); } + { return const_reverse_iterator(this->end()); } const_reverse_iterator crend() const noexcept - { return std::reverse_iterator<const_iterator>(this->begin()); } + { return const_reverse_iterator(this->begin()); } // [string.view.capacity], capacity @@ -169,8 +160,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr size_type max_size() const noexcept - { return ((npos - sizeof(size_type) - sizeof(void*)) - / sizeof(value_type) / 4); } + { + return (npos - sizeof(size_type) - sizeof(void*)) + / sizeof(value_type) / 4; + } constexpr bool empty() const noexcept @@ -195,7 +188,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION "(which is %zu) >= this->size() " "(which is %zu)"), __pos, this->size()), - _S_empty_str[0]); + *this->_M_str); } constexpr const _CharT& @@ -219,11 +212,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { return this->_M_str; } // [string.view.modifiers], modifiers: + void clear() noexcept { this->_M_len = 0; - this->_M_str = _S_empty_str; + this->_M_str = nullptr; } void @@ -251,8 +245,14 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _Allocator> explicit operator basic_string<_CharT, _Traits, _Allocator>() const { - return basic_string<_CharT, _Traits, _Allocator> - (this->_M_len, this->_M_str); + return { this->_M_str, this->_M_len }; + } + + template<typename _Allocator = std::allocator<_CharT>> + basic_string<_CharT, _Traits, _Allocator> + to_string(const _Allocator& __alloc = _Allocator()) const + { + return { this->_M_str, this->_M_len, __alloc }; } size_type @@ -329,7 +329,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION find(_CharT __c, size_type __pos=0) const noexcept; size_type - find(const _CharT* __str, size_type __pos, size_type __n) const; + find(const _CharT* __str, size_type __pos, size_type __n) const noexcept; size_type find(const _CharT* __str, size_type __pos=0) const noexcept @@ -343,7 +343,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION rfind(_CharT __c, size_type __pos = npos) const noexcept; size_type - rfind(const _CharT* __str, size_type __pos, size_type __n) const; + rfind(const _CharT* __str, size_type __pos, size_type __n) const noexcept; size_type rfind(const _CharT* __str, size_type __pos = npos) const noexcept @@ -431,8 +431,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : static_cast<int>(difference_type{__n1 - __n2}); } - static constexpr value_type _S_empty_str[1]{}; - size_t _M_len; const _CharT* _M_str; }; @@ -456,131 +454,119 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } template<typename _CharT, typename _Traits> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline bool operator!=(basic_string_view<_CharT, _Traits> __x, basic_string_view<_CharT, _Traits> __y) noexcept { return !(__x == __y); } template<typename _CharT, typename _Traits> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline 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> - bool + inline bool operator>=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x, basic_string_view<_CharT, _Traits> __y) noexcept { return __x.compare(__y) >= 0; } - // [string.view.comparison], sufficient additional overloads of comparison functions - - // [string.view.nonmem], other non-member basic_string_view functions - template<typename _CharT, typename _Traits = char_traits<_CharT>, - typename _Allocator = allocator<_CharT>> - basic_string<_CharT, _Traits, _Allocator> - to_string(basic_string_view<_CharT, _Traits> __str, - const _Allocator& __alloc = _Allocator()) - { - return basic_string<_CharT, _Traits, _Allocator> - (__str.begin(), __str.end(), __alloc); - } - + // [string.view.io], Inserters and extractors template<typename _CharT, typename _Traits> - basic_ostream<_CharT, _Traits>& - operator<<(basic_ostream<_CharT, _Traits>& __os, - basic_string_view<_CharT,_Traits> __str) - { return __ostream_insert(__os, __str.data(), __str.size()); } + inline basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>& __os, + basic_string_view<_CharT,_Traits> __str) + { return __ostream_insert(__os, __str.data(), __str.size()); } // basic_string_view typedef names |