2 files changed, 76 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.cpp
new file mode 100644
index 0000000000..3b0a77e560
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
+ * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "UnresolvedStyleValue.h"
+#include <AK/StringBuilder.h>
+
+namespace Web::CSS {
+
+ErrorOr<String> UnresolvedStyleValue::to_string() const
+{
+    StringBuilder builder;
+    for (auto& value : m_values)
+        TRY(builder.try_append(TRY(value.to_string())));
+    return builder.to_string();
+}
+
+bool UnresolvedStyleValue::equals(StyleValue const& other) const
+{
+    if (type() != other.type())
+        return false;
+    // This is a case where comparing the strings actually makes sense.
+    return to_string().release_value_but_fixme_should_propagate_errors() == other.to_string().release_value_but_fixme_should_propagate_errors();
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.h
new file mode 100644
index 0000000000..4fa6e1cf08
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/UnresolvedStyleValue.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
+ * Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Vector.h>
+#include <LibWeb/CSS/Parser/ComponentValue.h>
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+class UnresolvedStyleValue final : public StyleValue {
+public:
+    static ValueComparingNonnullRefPtr<UnresolvedStyleValue> create(Vector<Parser::ComponentValue>&& values, bool contains_var_or_attr)
+    {
+        return adopt_ref(*new UnresolvedStyleValue(move(values), contains_var_or_attr));
+    }
+    virtual ~UnresolvedStyleValue() override = default;
+
+    virtual ErrorOr<String> to_string() const override;
+
+    Vector<Parser::ComponentValue> const& values() const { return m_values; }
+    bool contains_var_or_attr() const { return m_contains_var_or_attr; }
+
+    virtual bool equals(StyleValue const& other) const override;
+
+private:
+    UnresolvedStyleValue(Vector<Parser::ComponentValue>&& values, bool contains_var_or_attr)
+        : StyleValue(Type::Unresolved)
+        , m_values(move(values))
+        , m_contains_var_or_attr(contains_var_or_attr)
+    {
+    }
+
+    Vector<Parser::ComponentValue> m_values;
+    bool m_contains_var_or_attr { false };
+};
+
+}