Source/WebCore/workers/ScriptBuffer.h

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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
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 */

#pragma once

#include "SharedBuffer.h"

namespace WebCore {

class ScriptBuffer {
public:
    ScriptBuffer() = default;

    ScriptBuffer(RefPtr<SharedBuffer>&& buffer)
        : m_buffer(WTFMove(buffer))
    {
    }

    static ScriptBuffer empty();

    WEBCORE_EXPORT explicit ScriptBuffer(const String&);

    String toString() const;
    SharedBuffer* buffer() const { return m_buffer.get(); }

    ScriptBuffer isolatedCopy() const { return ScriptBuffer(m_buffer ? RefPtr<SharedBuffer>(m_buffer->copy()) : nullptr); }
    explicit operator bool() const { return !!m_buffer; }
    bool isEmpty() const { return !m_buffer || !m_buffer->size(); }

    WEBCORE_EXPORT bool containsSingleFileMappedSegment() const;
    void append(const String&);

private:
    RefPtr<SharedBuffer> m_buffer; // Contains the UTF-8 encoded script.
};

bool operator==(const ScriptBuffer&, const ScriptBuffer&);
bool operator!=(const ScriptBuffer&, const ScriptBuffer&);

} // namespace WebCore