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Everywhere: Remove redundant inequality comparison operators

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C++20 can automatically synthesize `operator!=` from `operator==`, so
there is no point in writing such functions by hand if all they do is
call through to `operator==`.

This fixes a compile error with compilers that implement P2468 (Clang
16 currently). This paper restores the C++17 behavior that if both
`T::operator==(U)` and `T::operator!=(U)` exist, `U == T` won't be
rewritten in reverse to call `T::operator==(U)`. Removing `!=` operators
makes the rewriting possible again.
See https://reviews.llvm.org/D134529#3853062
This commit is contained in:
Daniel Bertalan 2022-10-21 15:53:20 +02:00 • committed by Andrew Kaster
parent 4e406b0730
commit 4296425bd8
40 changed files with 1 additions and 180 deletions
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25
Userland/Libraries/LibRegex/RegexMatch.h
View file

@ -310,11 +310,6 @@ public:
[&](StringView view) { return view == cstring; });
}
bool operator!=(char const* cstring) const
{
return !(*this == cstring);
}
bool operator==(String const& string) const
{
return m_view.visit(
@ -333,11 +328,6 @@ public:
[&](StringView view) { return view == string; });
}
bool operator!=(StringView other) const
{
return !(*this == other);
}
bool operator==(Utf32View const& other) const
{
return m_view.visit(
@ -349,11 +339,6 @@ public:
[&](StringView view) { return view == RegexStringView { other }.to_string(); });
}
bool operator!=(Utf32View const& other) const
{
return !(*this == other);
}
bool operator==(Utf16View const& other) const
{
return m_view.visit(
@ -363,11 +348,6 @@ public:
[&](StringView view) { return view == RegexStringView { other }.to_string(); });
}
bool operator!=(Utf16View const& other) const
{
return !(*this == other);
}
bool operator==(Utf8View const& other) const
{
return m_view.visit(
@ -377,11 +357,6 @@ public:
[&](StringView view) { return other.as_string() == view; });
}
bool operator!=(Utf8View const& other) const
{
return !(*this == other);
}
bool equals(RegexStringView other) const
{
return other.m_view.visit([this](auto const& view) { return operator==(view); });