LibWeb: Make unknown webkit pseudo-elements safe to dump

This fixes a couple of crashes when dumping the style sheets on ladybird.org
Author: https://github.com/AtkinsSJ Commit: f0ce4f43a6 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4654
2025-07-28 19:59:17 +00:00 · 2025-05-08 11:48:34 +01:00 · 2025-05-08 11:48:34 +01:00 · f0ce4f43a6 · 2025-05-08 15:22:46 +00:00
commit f0ce4f43a6
parent 0925a32558
2 changed files with 7 additions and 2 deletions
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoElement.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPseudoElement.cpp
@ -525,8 +525,13 @@ PseudoElementMetadata pseudo_element_metadata(PseudoElement pseudo_element)
    });

    generator.append(R"~~~(
-    case PseudoElement::KnownPseudoElementCount:
    case PseudoElement::UnknownWebKit:
+        return {
+            .parameter_type = PseudoElementMetadata::ParameterType::None,
+            .is_valid_as_function = false,
+            .is_valid_as_identifier = true,
+        };
+    case PseudoElement::KnownPseudoElementCount:
        break;
    }
    VERIFY_NOT_REACHED();