From 235018046e54713071511f6f2d9f9b5aea0856ef Mon Sep 17 00:00:00 2001
From: Sam Atkins <atkinssj@serenityos.org>
Date: Mon, 6 Mar 2023 14:46:21 +0000
Subject: [PATCH] LibWeb: Use free functions for parsing in `@Supports`

---
 Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp | 8 ++++++++
 Userland/Libraries/LibWeb/CSS/Parser/Parser.h   | 1 +
 Userland/Libraries/LibWeb/CSS/Supports.cpp      | 4 ++--
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 16258b3f9e..f537edca45 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -7455,4 +7455,12 @@ RefPtr<CSS::Supports> parse_css_supports(CSS::Parser::ParsingContext const& cont
     return parser.parse_as_supports();
 }
 
+Optional<CSS::StyleProperty> parse_css_supports_condition(CSS::Parser::ParsingContext const& context, StringView string)
+{
+    if (string.is_empty())
+        return {};
+    CSS::Parser::Parser parser(context, string);
+    return parser.parse_as_supports_condition();
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index e4f5d71f88..fe0d2ec1b8 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -376,5 +376,6 @@ CSS::CSSRule* parse_css_rule(CSS::Parser::ParsingContext const&, StringView);
 RefPtr<CSS::MediaQuery> parse_media_query(CSS::Parser::ParsingContext const&, StringView);
 Vector<NonnullRefPtr<CSS::MediaQuery>> parse_media_query_list(CSS::Parser::ParsingContext const&, StringView);
 RefPtr<CSS::Supports> parse_css_supports(CSS::Parser::ParsingContext const&, StringView);
+Optional<CSS::StyleProperty> parse_css_supports_condition(CSS::Parser::ParsingContext const&, StringView);
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/Supports.cpp b/Userland/Libraries/LibWeb/CSS/Supports.cpp
index 7a390f3156..65ba825edb 100644
--- a/Userland/Libraries/LibWeb/CSS/Supports.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Supports.cpp
@@ -52,13 +52,13 @@ bool Supports::InParens::evaluate() const
 
 bool Supports::Declaration::evaluate() const
 {
-    auto style_property = Parser::Parser({}, declaration).parse_as_supports_condition();
+    auto style_property = parse_css_supports_condition({}, declaration);
     return style_property.has_value();
 }
 
 bool Supports::Selector::evaluate() const
 {
-    auto style_property = Parser::Parser({}, selector).parse_as_selector();
+    auto style_property = parse_selector({}, selector);
     return style_property.has_value();
 }