LinkedHashSet.h

Go to the documentation of this file.

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _DECAF_UTIL_LINKEDHASHSET_H_
#define _DECAF_UTIL_LINKEDHASHSET_H_

#include <decaf/util/Config.h>

#include <decaf/util/LinkedHashMap.h>
#include <decaf/util/HashSet.h>
#include <decaf/util/ConcurrentModificationException.h>
#include <decaf/lang/exceptions/UnsupportedOperationException.h>

namespace decaf {
namespace util {

    template<typename E, typename HASHCODE = HashCode<E> >
    class LinkedHashSet : public HashSet<E, HASHCODE> {
    public:

        LinkedHashSet() : HashSet<E, HASHCODE>(new LinkedHashMap<E, Set<E>*, HASHCODE>()) {
        }

        LinkedHashSet(int capacity) : HashSet<E, HASHCODE>(new LinkedHashMap<E, Set<E>*, HASHCODE>(capacity)) {
        }

        LinkedHashSet(int capacity, float loadFactor) :
            HashSet<E, HASHCODE>(new LinkedHashMap<E, Set<E>*, HASHCODE>(capacity, loadFactor)) {
        }

        LinkedHashSet(const Collection<E>& collection) :
            HashSet<E, HASHCODE>(new LinkedHashMap<E, Set<E>*, HASHCODE>(
                (collection.size() < 6 ? 11 : collection.size() * 2))) {

            decaf::lang::Pointer<Iterator<E> > iter(collection.iterator());
            while (iter->hasNext()) {
                this->add(iter->next());
            }
        }

        virtual ~LinkedHashSet() {
        }

        virtual std::string toString() const {
            return "LinkedHashSet";
        }
    };

}}

#endif /* _DECAF_UTIL_LINKEDHASHSET_H_ */