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/LibJS/SourceCode.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022-2023, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <AK/Vector.h>
+#include <LibJS/Forward.h>
+#include <LibJS/Position.h>
+
+namespace JS {
+
+class SourceCode : public RefCounted<SourceCode> {
+public:
+    static NonnullRefPtr<SourceCode const> create(String filename, String code);
+
+    String const& filename() const;
+    String const& code() const;
+
+    SourceRange range_from_offsets(u32 start_offset, u32 end_offset) const;
+
+private:
+    SourceCode(String filename, String code);
+
+    String m_filename;
+    String m_code;
+
+    // For fast mapping of offsets to line/column numbers, we build a list of
+    // starting points (with byte offsets into the source string) and which
+    // line:column they map to. This can then be binary-searched.
+    void fill_position_cache() const;
+    Vector<Position> mutable m_cached_positions;
+};
+
+}