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/*
 * Copyright 2015 Open Networking Laboratory
 *
 * Licensed 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.
 */

package org.onosproject.net.flow.instructions;

import com.google.common.annotations.Beta;
import com.google.common.base.MoreObjects;

import java.util.Objects;

/**
 * Type of extension instructions.
 */
@Beta
public final class ExtensionType {

    /**
     * A list of well-known named extension instruction type codes.
     */
    public enum ExtensionTypes {
        // TODO fix type numbers to include experimenter id
        NICIRA_SET_TUNNEL_DST(31),
        NICIRA_RESUBMIT(32);

        private ExtensionType type;

        /**
         * Creates a new named extension instruction type.
         *
         * @param type type code
         */
        ExtensionTypes(int type) {
            this.type = new ExtensionType(type);
        }

        /**
         * Gets the extension type object for this named type code.
         *
         * @return extension type object
         */
        public ExtensionType type() {
            return type;
        }
    }

    private final int type;

    /**
     * Creates an extension type with the given int type code.
     *
     * @param type type code
     */
    public ExtensionType(int type) {
        this.type = type;
    }

    @Override
    public int hashCode() {
        return Objects.hash(type);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof ExtensionType) {
            final ExtensionType that = (ExtensionType) obj;
            return this.type == that.type;
        }
        return false;
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(ExtensionType.class)
                .add("type", type)
                .toString();
    }
}