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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.api.collections;

import java.util.Map;
import java.util.Set;

A factory for creating collections.
/**
 * A factory for creating collections.
 */
public interface CollectionsProvider {

    
Creates a set that uses reference-equality in place of object-equality when comparing
entries.
/**
     * Creates a set that uses reference-equality in place of object-equality when comparing
     * entries.
     */
    <E> Set<E> newIdentitySet();

    
Creates a map that uses reference-equality in place of object-equality when comparing keys.
/**
     * Creates a map that uses reference-equality in place of object-equality when comparing keys.
     */
    <K, V> Map<K, V> newIdentityMap();

    
Creates a map that uses reference-equality in place of object-equality when comparing keys.
Params:
expectedMaxSize – the expected maximum size of the map/**
     * Creates a map that uses reference-equality in place of object-equality when comparing keys.
     *
     * @param expectedMaxSize the expected maximum size of the map
     */
    <K, V> Map<K, V> newIdentityMap(int expectedMaxSize);

    
Creates a map that uses reference-equality in place of object-equality when comparing keys.
Params:
initFrom – the returned map is populated with the entries in this map/**
     * Creates a map that uses reference-equality in place of object-equality when comparing keys.
     *
     * @param initFrom the returned map is populated with the entries in this map
     */
    <K, V> Map<K, V> newIdentityMap(Map<K, V> initFrom);
}