/*
* Copyright (C) 2010 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:
* 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#ifndef ImmutableArray_h
#define ImmutableArray_h
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebKit {
// ImmutableArray - An immutable array type suitable for vending to an API.
class ImmutableArray : public RefCounted<ImmutableArray> {
public:
struct ImmutableArrayCallbacks {
typedef void (*ImmutableArrayCallback)(const void*);
ImmutableArrayCallback ref;
ImmutableArrayCallback deref;
};
static PassRefPtr<ImmutableArray> create()
{
return adoptRef(new ImmutableArray);
}
static PassRefPtr<ImmutableArray> create(const void** entries, size_t size, const ImmutableArrayCallbacks* callbacks)
{
return adoptRef(new ImmutableArray(entries, size, callbacks));
}
static PassRefPtr<ImmutableArray> adopt(void** entries, size_t size, const ImmutableArrayCallbacks* callbacks)
{
return adoptRef(new ImmutableArray(entries, size, callbacks, Adopt));
}
~ImmutableArray();
const void* at(size_t i) { ASSERT(i < m_size); return m_entries[i]; }
size_t size() { return m_size; }
private:
ImmutableArray();
ImmutableArray(const void** entries, size_t size, const ImmutableArrayCallbacks*);
enum AdoptTag { Adopt };
ImmutableArray(void** entries, size_t size, const ImmutableArrayCallbacks*, AdoptTag);
void** m_entries;
size_t m_size;
ImmutableArrayCallbacks m_callbacks;
};
} // namespace WebKit
#endif // ImmutableArray_h