LibWeb/CSS: Add tokenize() method to style values, to get a list of CVs

A couple of arbitrary substitution functions require us to get or
produce some style value, and then substitute its ComponentValues into
the original ComponentValue list. So this commit gives CSSStyleValue a
tokenize() method that does so.

Apart from a couple of unusual cases like the guaranteed-invalid value,
style values can all be converted into ComponentValues by serializing
them as a string, and then parsing that as a list of component values.
That feels unnecessarily inefficient in most cases though, so I've
implemented faster overrides for a lot of the basic style value
classes, but left that serialize-and-reparse method as the fallback.
This commit is contained in:
Sam Atkins 2025-07-10 12:17:27 +01:00 committed by Tim Ledbetter
parent 9bc5c6fb35
commit 5aba457009
Notes: github-actions[bot] 2025-07-16 13:50:05 +00:00
17 changed files with 90 additions and 8 deletions

View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2023-2025, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -13,4 +13,9 @@ String IntegerStyleValue::to_string(SerializationMode) const
return String::number(m_value);
}
Vector<Parser::ComponentValue> IntegerStyleValue::tokenize() const
{
return { Parser::Token::create_number(Number { Number::Type::Integer, value() }) };
}
}