darling-WTF/wtf/BagToHashMap.h
2018-01-05 13:44:16 -08:00

50 lines
1.9 KiB
C++

/*
* Copyright (C) 2013, 2014 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 BagToHashMap_h
#define BagToHashMap_h
#include <wtf/Bag.h>
#include <wtf/HashMap.h>
namespace WTF {
template<typename ElementType, typename KeyType, typename HashArg, typename KeyGetterFunctor>
void toHashMap(Bag<ElementType>& bag, KeyGetterFunctor& getKey, HashMap<KeyType, ElementType*, HashArg>& result)
{
for (typename Bag<ElementType>::iterator iter = bag.begin(); !!iter; ++iter) {
ElementType* element = *iter;
KeyType key = getKey(*element);
result.add(key, element);
}
}
} // namespace WTF
using WTF::toHashMap;
#endif // BagToHashMap_h