LibWeb: Add partial serialization for CSSFontFaceRule

This partially adds serialization code for
`CSSFontFaceRule::serialized()` to spec. This is only partially
implemented as some parts of the `@font-face` rule are not implemented
yet.

1 files changed, 16 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/CSS/Serialize.h b/Userland/Libraries/LibWeb/CSS/Serialize.h
index 3988c2ba61..c8461fda0a 100644
--- a/Userland/Libraries/LibWeb/CSS/Serialize.h
+++ b/Userland/Libraries/LibWeb/CSS/Serialize.h
@@ -9,7 +9,9 @@
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/StringView.h>
+#include <AK/Vector.h>
 #include <LibGfx/Color.h>
+#include <LibWeb/CSS/UnicodeRange.h>
 
 namespace Web::CSS {
 
@@ -18,6 +20,8 @@ void escape_a_character_as_code_point(StringBuilder&, u32 character);
 void serialize_an_identifier(StringBuilder&, StringView ident);
 void serialize_a_string(StringBuilder&, StringView string);
 void serialize_a_url(StringBuilder&, StringView url);
+void serialize_a_local(StringBuilder&, StringView path);
+void serialize_unicode_ranges(StringBuilder&, Vector<UnicodeRange> const& unicode_ranges);
 void serialize_a_srgb_value(StringBuilder&, Color color);
 
 String escape_a_character(u32 character);
@@ -27,4 +31,16 @@ String serialize_a_string(StringView string);
 String serialize_a_url(StringView url);
 String serialize_a_srgb_value(Color color);
 
+template<typename T, typename SerializeItem>
+void serialize_a_comma_separated_list(StringBuilder& builder, Vector<T> const& items, SerializeItem serialize_item)
+{
+    for (size_t i = 0; i < items.size(); i++) {
+        auto& item = items.at(i);
+        serialize_item(item);
+        if ((i + 1) < items.size()) {
+            builder.append(",\n"sv);
+        }
+    }
+}
+
 }