/*

 * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package org.graalvm.graphio;

final class DefaultGraphTypes implements GraphTypes {

    static final GraphTypes DEFAULT = new DefaultGraphTypes();

    private DefaultGraphTypes() {

    }

    @Override

    public Class<?> enumClass(Object enumValue) {

        if (enumValue instanceof Enum<?>) {

            return enumValue.getClass();

        }

        return null;

    }

    @Override

    public int enumOrdinal(Object obj) {

        if (obj instanceof Enum<?>) {

            return ((Enum<?>) obj).ordinal();

        }

        return -1;

    }

    @SuppressWarnings("unchecked")

    @Override

    public String[] enumTypeValues(Object clazz) {

        if (clazz instanceof Class<?>) {

            Class<? extends Enum<?>> enumClass = (Class<? extends Enum<?>>) clazz;

            Enum<?>[] constants = enumClass.getEnumConstants();

            if (constants != null) {

                String[] names = new String[constants.length];

                for (int i = 0; i < constants.length; i++) {

                    names[i] = constants[i].name();

                }

                return names;

            }

        }

        return null;

    }

    @Override

    public String typeName(Object clazz) {

        if (clazz instanceof Class<?>) {

            return ((Class<?>) clazz).getName();

        }

        return null;

    }

}