LibHTML: Make the CSS parser return RefPtr's

It should be possible for the CSS parser to fail, and we'll know it
failed if it returns nullptr. Returning RefPtr's makes it actually
possible to return nullptr. :^)

3 files changed, 7 insertions, 7 deletions

diff --git a/Libraries/LibHTML/CSS/StyleResolver.cpp b/Libraries/LibHTML/CSS/StyleResolver.cpp
index 76c4a34ae0..9377943ca5 100644
--- a/Libraries/LibHTML/CSS/StyleResolver.cpp
+++ b/Libraries/LibHTML/CSS/StyleResolver.cpp
@@ -22,7 +22,7 @@ static StyleSheet& default_stylesheet()
     if (!sheet) {
         extern const char default_stylesheet_source[];
         String css = default_stylesheet_source;
-        sheet = &parse_css(css).leak_ref();
+        sheet = parse_css(css).leak_ref();
     }
     return *sheet;
 }
diff --git a/Libraries/LibHTML/Parser/CSSParser.cpp b/Libraries/LibHTML/Parser/CSSParser.cpp
index 5ce42df1cb..5c562389bb 100644
--- a/Libraries/LibHTML/Parser/CSSParser.cpp
+++ b/Libraries/LibHTML/Parser/CSSParser.cpp
@@ -376,7 +376,7 @@ public:
         consume_whitespace_or_comments();
     }
 
-    NonnullRefPtr<StyleSheet> parse_sheet()
+    RefPtr<StyleSheet> parse_sheet()
     {
         while (index < css.length()) {
             parse_rule();
@@ -385,7 +385,7 @@ public:
         return StyleSheet::create(move(rules));
     }
 
-    NonnullRefPtr<StyleDeclaration> parse_standalone_declaration()
+    RefPtr<StyleDeclaration> parse_standalone_declaration()
     {
         consume_whitespace_or_comments();
         for (;;) {
@@ -415,13 +415,13 @@ private:
     StringView css;
 };
 
-NonnullRefPtr<StyleSheet> parse_css(const StringView& css)
+RefPtr<StyleSheet> parse_css(const StringView& css)
 {
     CSSParser parser(css);
     return parser.parse_sheet();
 }
 
-NonnullRefPtr<StyleDeclaration> parse_css_declaration(const StringView& css)
+RefPtr<StyleDeclaration> parse_css_declaration(const StringView& css)
 {
     CSSParser parser(css);
     return parser.parse_standalone_declaration();
diff --git a/Libraries/LibHTML/Parser/CSSParser.h b/Libraries/LibHTML/Parser/CSSParser.h
index 44e57f5dd5..050b0dd8c7 100644
--- a/Libraries/LibHTML/Parser/CSSParser.h
+++ b/Libraries/LibHTML/Parser/CSSParser.h
@@ -3,6 +3,6 @@
 #include <AK/NonnullRefPtr.h>
 #include <LibHTML/CSS/StyleSheet.h>
 
-NonnullRefPtr<StyleSheet> parse_css(const StringView&);
-NonnullRefPtr<StyleDeclaration> parse_css_declaration(const StringView&);
+RefPtr<StyleSheet> parse_css(const StringView&);
+RefPtr<StyleDeclaration> parse_css_declaration(const StringView&);