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Improve operator==

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This commit is contained in:
Peter Dimov
2021-10-09 21:04:38 +03:00
parent 15fdc0ab39
commit 52c58efc36
1 changed files with 14 additions and 14 deletions
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28
include/boost/core/string_view.hpp
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@ -915,12 +915,12 @@ public:
BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) == 0; return sv1.size() == sv2.size() && traits_type::compare( sv1.data(), sv2.data(), sv1.size() ) == 0;
} }
BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) != 0; return !( sv1 == sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
@ -951,22 +951,22 @@ public:
BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) == 0; return sv1.size() == sv2.size() && traits_type::compare( sv1.data(), sv2.data(), sv1.size() ) == 0;
} }
BOOST_CXX14_CONSTEXPR friend bool operator==( std::basic_string_view<Ch> sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator==( std::basic_string_view<Ch> sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) == 0; return sv1.size() == sv2.size() && traits_type::compare( sv1.data(), sv2.data(), sv1.size() ) == 0;
} }
BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) != 0; return !( sv1 == sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator!=( std::basic_string_view<Ch> sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator!=( std::basic_string_view<Ch> sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) != 0; return !( sv1 == sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, std::basic_string_view<Ch> sv2 ) BOOST_NOEXCEPT
@ -1013,22 +1013,22 @@ public:
BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) == 0; return sv1 == basic_string_view( sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator==( Ch const* sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator==( Ch const* sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv2.compare( sv1 ) == 0; return basic_string_view( sv1 ) == sv2;
} }
BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) != 0; return !( sv1 == sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator!=( Ch const* sv1, basic_string_view sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator!=( Ch const* sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv2.compare( sv1 ) != 0; return !( sv1 == sv2 );
} }
BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, Ch const* sv2 ) BOOST_NOEXCEPT
@ -1075,22 +1075,22 @@ public:
template<class A> BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT template<class A> BOOST_CXX14_CONSTEXPR friend bool operator==( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) == 0; return sv1.size() == sv2.size() && traits_type::compare( sv1.data(), sv2.data(), sv1.size() ) == 0;
} }
template<class A> BOOST_CXX14_CONSTEXPR friend bool operator==( std::basic_string<Ch, std::char_traits<Ch>, A> const& sv1, basic_string_view sv2 ) BOOST_NOEXCEPT template<class A> BOOST_CXX14_CONSTEXPR friend bool operator==( std::basic_string<Ch, std::char_traits<Ch>, A> const& sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv2.compare( sv1 ) == 0; return sv1.size() == sv2.size() && traits_type::compare( sv1.data(), sv2.data(), sv1.size() ) == 0;
} }
template<class A> BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT template<class A> BOOST_CXX14_CONSTEXPR friend bool operator!=( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT
{ {
return sv1.compare( sv2 ) != 0; return !( sv1 == sv2 );
} }
template<class A> BOOST_CXX14_CONSTEXPR friend bool operator!=( std::basic_string<Ch, std::char_traits<Ch>, A> const& sv1, basic_string_view sv2 ) BOOST_NOEXCEPT template<class A> BOOST_CXX14_CONSTEXPR friend bool operator!=( std::basic_string<Ch, std::char_traits<Ch>, A> const& sv1, basic_string_view sv2 ) BOOST_NOEXCEPT
{ {
return sv2.compare( sv1 ) != 0; return !( sv1 == sv2 );
} }
template<class A> BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT template<class A> BOOST_CXX14_CONSTEXPR friend bool operator<( basic_string_view sv1, std::basic_string<Ch, std::char_traits<Ch>, A> const& sv2 ) BOOST_NOEXCEPT