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ICU-22843 UnicodeString::operator!=(string view)

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Markus Scherer 2024-08-25 19:44:17 -07:00
parent 1414e80f6c
commit 6645cc4935
2 changed files with 40 additions and 0 deletions
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24
icu4c/source/common/unicode/unistr.h
View file

@ -364,6 +364,30 @@ public:
*/
inline bool operator!= (const UnicodeString& text) const;
#ifndef U_HIDE_DRAFT_API
/**
* Inequality operator. Performs only bitwise comparison with `text`
* which is, or which is implicitly convertible to,
* a std::u16string_view or (if U_SIZEOF_WCHAR_T==2) std::wstring_view.
*
* For performance, you can use std::u16string_view literals with compile-time
* length determination:
* \code
* #include <string_view>
* using namespace std::string_view_literals;
* UnicodeString str = ...;
* if (str != u"literal"sv) { ... }
* \endcode
* @param text The string view to compare to this string.
* @return false if `text` contains the same characters as this one, true otherwise.
* @draft ICU 76
*/
template<typename S, typename = std::enable_if_t<ConvertibleToU16StringView<S>>>
inline bool operator!=(const S &text) const {
return !operator==(text);
}
#endif // U_HIDE_DRAFT_API
/**
* Greater than operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.

16
icu4c/source/test/intltest/ustrtest.cpp
View file

@ -2453,6 +2453,14 @@ void UnicodeStringTest::TestU16StringView() {
assertFalse("any == string-str16", any == str16);
assertTrue("any == string-any", any == u"any"s);
// operator!=
assertTrue("any != pointer-p16", any != p16);
assertFalse("any != pointer-any", any != u"any");
assertTrue("any != string_view-sv16", any != sv16);
assertFalse("any != string_view-any", any != u"any"sv);
assertTrue("any != string-str16", any != str16);
assertFalse("any != string-any", any != u"any"s);
// Assignment copies the string contents.
UnicodeString x;
x = p16;
@ -2541,6 +2549,14 @@ void UnicodeStringTest::TestWStringView() {
assertFalse("any == string-str16", any == str16);
assertTrue("any == string-any", any == L"any"s);
// operator!=
assertTrue("any != pointer-p16", any != p16);
assertFalse("any != pointer-any", any != L"any");
assertTrue("any != string_view-sv16", any != sv16);
assertFalse("any != string_view-any", any != L"any"sv);
assertTrue("any != string-str16", any != str16);
assertFalse("any != string-any", any != L"any"s);
// Assignment copies the string contents.
UnicodeString x;
x = p16;