Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/CSS/GridTrackPlacement.h

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
+ * Copyright (c) 2022, Martin Falisse <mfalisse@outlook.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+
+namespace Web::CSS {
+
+class GridTrackPlacement {
+public:
+    static GridTrackPlacement make_auto()
+    {
+        return GridTrackPlacement();
+    }
+
+    static GridTrackPlacement make_line(Optional<int> line_number, Optional<String> name)
+    {
+        return GridTrackPlacement(AreaOrLine { .line_number = line_number, .name = name });
+    }
+
+    static GridTrackPlacement make_span(int value)
+    {
+        return GridTrackPlacement(Span { .value = value });
+    }
+
+    bool is_auto() const { return m_value.has<Auto>(); }
+    bool is_span() const { return m_value.has<Span>(); }
+    bool is_area_or_line() const { return m_value.has<AreaOrLine>(); }
+
+    bool is_auto_positioned() const { return is_auto() || is_span(); }
+    bool is_positioned() const { return !is_auto_positioned(); }
+
+    bool has_identifier() const
+    {
+        return is_area_or_line() && m_value.get<AreaOrLine>().name.has_value();
+    }
+
+    bool has_line_number() const
+    {
+        return is_area_or_line() && m_value.get<AreaOrLine>().line_number.has_value();
+    }
+
+    String identifier() const { return *m_value.get<AreaOrLine>().name; }
+
+    int line_number() const { return *m_value.get<AreaOrLine>().line_number; }
+    int span() const { return m_value.get<Span>().value; }
+
+    String to_string() const;
+
+    bool operator==(GridTrackPlacement const& other) const = default;
+
+private:
+    struct Auto {
+        bool operator==(Auto const&) const = default;
+    };
+
+    struct AreaOrLine {
+        Optional<int> line_number;
+        Optional<String> name;
+        bool operator==(AreaOrLine const& other) const = default;
+    };
+
+    struct Span {
+        int value;
+        bool operator==(Span const& other) const = default;
+    };
+
+    GridTrackPlacement()
+        : m_value(Auto {}) {};
+    GridTrackPlacement(AreaOrLine value)
+        : m_value(value) {};
+    GridTrackPlacement(Span value)
+        : m_value(value) {};
+
+    Variant<Auto, AreaOrLine, Span> m_value;
+};
+
+}