LibWeb: Add CSS::Parser helper for parsing a standalone "calc()" value

2 files changed, 12 insertions, 2 deletions

diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index cf996e4c59..8d87624c78 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -3038,7 +3038,7 @@ RefPtr<StyleValue> Parser::parse_builtin_value(ComponentValue const& component_v
     return {};
 }
 
-RefPtr<StyleValue> Parser::parse_calculated_value(Vector<ComponentValue> const& component_values)
+RefPtr<CalculatedStyleValue> Parser::parse_calculated_value(Vector<ComponentValue> const& component_values)
 {
     auto calc_expression = parse_calc_expression(component_values);
     if (calc_expression == nullptr)
@@ -6960,6 +6960,15 @@ bool Parser::is_builtin(StringView name)
         || name.equals_ignoring_case("unset"sv);
 }
 
+RefPtr<CalculatedStyleValue> Parser::parse_calculated_value(Badge<StyleComputer>, ParsingContext const& context, Vector<ComponentValue> const& tokens)
+{
+    if (tokens.is_empty())
+        return {};
+
+    Parser parser(context, ""sv);
+    return parser.parse_calculated_value(tokens);
+}
+
 RefPtr<StyleValue> Parser::parse_css_value(Badge<StyleComputer>, ParsingContext const& context, PropertyID property_id, Vector<ComponentValue> const& tokens)
 {
     if (tokens.is_empty() || property_id == CSS::PropertyID::Invalid || property_id == CSS::PropertyID::Custom)
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index 28f0e6e2ea..d224023bbc 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -86,6 +86,7 @@ public:
     RefPtr<StyleValue> parse_as_css_value(PropertyID);
 
     static RefPtr<StyleValue> parse_css_value(Badge<StyleComputer>, ParsingContext const&, PropertyID, Vector<ComponentValue> const&);
+    static RefPtr<CalculatedStyleValue> parse_calculated_value(Badge<StyleComputer>, ParsingContext const&, Vector<ComponentValue> const&);
 
 private:
     enum class ParseError {
@@ -270,7 +271,7 @@ private:
     RefPtr<StyleValue> parse_css_value(ComponentValue const&);
     RefPtr<StyleValue> parse_builtin_value(ComponentValue const&);
     RefPtr<StyleValue> parse_dynamic_value(ComponentValue const&);
-    RefPtr<StyleValue> parse_calculated_value(Vector<ComponentValue> const&);
+    RefPtr<CalculatedStyleValue> parse_calculated_value(Vector<ComponentValue> const&);
     RefPtr<StyleValue> parse_dimension_value(ComponentValue const&);
     RefPtr<StyleValue> parse_numeric_value(ComponentValue const&);
     RefPtr<StyleValue> parse_identifier_value(ComponentValue const&);