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/Runtime/DataView.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Runtime/ArrayBuffer.h>
+#include <LibJS/Runtime/ByteLength.h>
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Object.h>
+
+namespace JS {
+
+class DataView : public Object {
+    JS_OBJECT(DataView, Object);
+    JS_DECLARE_ALLOCATOR(DataView);
+
+public:
+    static NonnullGCPtr<DataView> create(Realm&, ArrayBuffer*, ByteLength byte_length, size_t byte_offset);
+
+    virtual ~DataView() override = default;
+
+    ArrayBuffer* viewed_array_buffer() const { return m_viewed_array_buffer; }
+    ByteLength const& byte_length() const { return m_byte_length; }
+    u32 byte_offset() const { return m_byte_offset; }
+
+private:
+    DataView(ArrayBuffer*, ByteLength byte_length, size_t byte_offset, Object& prototype);
+
+    virtual void visit_edges(Visitor& visitor) override;
+
+    GCPtr<ArrayBuffer> m_viewed_array_buffer;
+    ByteLength m_byte_length { 0 };
+    size_t m_byte_offset { 0 };
+};
+
+// 25.3.1.1 DataView With Buffer Witness Records, https://tc39.es/ecma262/#sec-dataview-with-buffer-witness-records
+struct DataViewWithBufferWitness {
+    NonnullGCPtr<DataView const> object;  // [[Object]]
+    ByteLength cached_buffer_byte_length; // [[CachedBufferByteLength]]
+};
+
+DataViewWithBufferWitness make_data_view_with_buffer_witness_record(DataView const&, ArrayBuffer::Order);
+u32 get_view_byte_length(DataViewWithBufferWitness const&);
+bool is_view_out_of_bounds(DataViewWithBufferWitness const&);
+
+}