/*
 * Copyright (C) 2013 Google 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
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 */

#ifndef CustomElementDescriptorHash_h
#define CustomElementDescriptorHash_h

#include "core/dom/CustomElementDescriptor.h"
#include "wtf/HashFunctions.h"
#include "wtf/HashTraits.h"
#include "wtf/text/AtomicStringHash.h"

namespace WebCore {

struct CustomElementDescriptorHash {
    static unsigned hash(const CustomElementDescriptor& descriptor)
    {
        return WTF::pairIntHash(AtomicStringHash::hash(descriptor.type()), WTF::pairIntHash(AtomicStringHash::hash(descriptor.namespaceURI()), AtomicStringHash::hash(descriptor.localName())));
    }

    static bool equal(const CustomElementDescriptor& a, const CustomElementDescriptor& b)
    {
        return a == b;
    }

    static const bool safeToCompareToEmptyOrDeleted = true;
};

} // namespace WebCore

namespace WTF {

template<>
struct HashTraits<WebCore::CustomElementDescriptor> : SimpleClassHashTraits<WebCore::CustomElementDescriptor> {
    static const bool emptyValueIsZero = HashTraits<AtomicString>::emptyValueIsZero;
};

} // namespace WTF

#endif // CustomElementDescriptorHash