56 lines
2.2 KiB
Java
56 lines
2.2 KiB
Java
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* This file is available under and governed by the GNU General Public
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* License version 2 only, as published by the Free Software Foundation.
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* However, the following notice accompanied the original version of this
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* file:
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*
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* Written by Doug Lea and Martin Buchholz with assistance from
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* members of JCP JSR-166 Expert Group and released to the public
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* domain, as explained at
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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import java.util.Map;
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/** Allows tests to work with different Map implementations. */
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public interface MapImplementation {
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/** Returns the Map implementation class. */
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public Class<?> klazz();
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/** Returns an empty map. */
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public Map emptyMap();
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// General purpose implementations can use Integers for key and value
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default Object makeKey(int i) { return i; }
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default Object makeValue(int i) { return i; }
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default int keyToInt(Object key) { return (Integer) key; }
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default int valueToInt(Object value) { return (Integer) value; }
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public boolean isConcurrent();
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default boolean remappingFunctionCalledAtMostOnce() { return true; };
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public boolean permitsNullKeys();
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public boolean permitsNullValues();
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public boolean supportsSetValue();
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}
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