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AK+Everywhere: Remove the null state of DeprecatedString

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This commit removes DeprecatedString's "null" state, and replaces all
its users with one of the following:
- A normal, empty DeprecatedString
- Optional<DeprecatedString>

Note that null states of DeprecatedFlyString/StringView/etc are *not*
affected by this commit. However, DeprecatedString::empty() is now
considered equal to a null StringView.
This commit is contained in:
Ali Mohammad Pur 2023-10-10 15:00:58 +03:30 • committed by Ali Mohammad Pur
parent daf6d8173c
commit aeee98b3a1
189 changed files with 597 additions and 652 deletions
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4
AK/StringView.cpp
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@ -178,12 +178,12 @@ bool StringView::equals_ignoring_ascii_case(StringView other) const
#ifndef KERNEL
DeprecatedString StringView::to_lowercase_string() const
{
return StringImpl::create_lowercased(characters_without_null_termination(), length());
return StringImpl::create_lowercased(characters_without_null_termination(), length()).release_nonnull();
}
DeprecatedString StringView::to_uppercase_string() const
{
return StringImpl::create_uppercased(characters_without_null_termination(), length());
return StringImpl::create_uppercased(characters_without_null_termination(), length()).release_nonnull();
}
DeprecatedString StringView::to_titlecase_string() const