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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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17
Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
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@ -77,7 +77,7 @@ bool HTMLLinkElement::has_loaded_icon() const
return m_relationship & Relationship::Icon && resource() && resource()->is_loaded() && resource()->has_encoded_data();
}
void HTMLLinkElement::attribute_changed(FlyString const& name, DeprecatedString const& value)
void HTMLLinkElement::attribute_changed(FlyString const& name, Optional<DeprecatedString> const& value)
{
HTMLElement::attribute_changed(name, value);
@ -85,7 +85,7 @@ void HTMLLinkElement::attribute_changed(FlyString const& name, DeprecatedString
if (name == HTML::AttributeNames::rel) {
m_relationship = 0;
// Keywords are always ASCII case-insensitive, and must be compared as such.
auto lowercased_value = value.to_lowercase();
auto lowercased_value = value.value_or("").to_lowercase();
// To determine which link types apply to a link, a, area, or form element,
// the element's rel attribute must be split on ASCII whitespace.
// The resulting tokens are the keywords for the link types that apply to that element.
@ -341,13 +341,14 @@ void HTMLLinkElement::process_stylesheet_resource(bool success, Fetch::Infrastru
// 1. If the element has a charset attribute, get an encoding from that attribute's value. If that succeeds, return the resulting encoding. [ENCODING]
// 2. Otherwise, return the document's character encoding. [DOM]
DeprecatedString encoding;
if (auto charset = deprecated_attribute(HTML::AttributeNames::charset); !charset.is_null())
encoding = charset;
else
encoding = document().encoding_or_default().to_deprecated_string();
Optional<String> encoding;
if (auto charset = attribute(HTML::AttributeNames::charset); charset.has_value())
encoding = charset.release_value();
auto decoder = TextCodec::decoder_for(encoding);
if (!encoding.has_value())
encoding = document().encoding_or_default();
auto decoder = TextCodec::decoder_for(*encoding);
if (!decoder.has_value()) {
// If we don't support the encoding yet, let's error out instead of trying to decode it as something it's most likely not.