sky/engine/core/rendering/style/DataEquivalency.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_
#define SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_

#include "sky/engine/wtf/OwnPtr.h"
#include "sky/engine/wtf/RefPtr.h"

namespace blink {

template <typename T>
bool dataEquivalent(const T* a, const T* b)
{
    if (a == b)
        return true;
    if (!a || !b)
        return false;
    return *a == *b;
}

template <typename T>
bool dataEquivalent(const RefPtr<T>& a, const RefPtr<T>& b)
{
    return dataEquivalent(a.get(), b.get());
}

template <typename T>
bool dataEquivalent(const OwnPtr<T>& a, const OwnPtr<T>& b)
{
    return dataEquivalent(a.get(), b.get());
}

} // namespace blink

#endif  // SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_