1 files changed, 67 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/CSS/Selector.cpp b/Userland/Libraries/LibWeb/CSS/Selector.cpp
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+++ b/Userland/Libraries/LibWeb/CSS/Selector.cpp
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+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibWeb/CSS/Selector.h>
+
+namespace Web::CSS {
+
+Selector::Selector(Vector<ComplexSelector>&& component_lists)
+    : m_complex_selectors(move(component_lists))
+{
+}
+
+Selector::~Selector()
+{
+}
+
+u32 Selector::specificity() const
+{
+    unsigned ids = 0;
+    unsigned tag_names = 0;
+    unsigned classes = 0;
+
+    for (auto& list : m_complex_selectors) {
+        for (auto& simple_selector : list.compound_selector) {
+            switch (simple_selector.type) {
+            case SimpleSelector::Type::Id:
+                ++ids;
+                break;
+            case SimpleSelector::Type::Class:
+                ++classes;
+                break;
+            case SimpleSelector::Type::TagName:
+                ++tag_names;
+                break;
+            default:
+                break;
+            }
+        }
+    }
+
+    return ids * 0x10000 + classes * 0x100 + tag_names;
+}
+
+}