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/*
 * Copyright (c) 2009, 2016, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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 */

package org.openjdk.source.tree;

import java.util.List;

/**
 * A tree node for an 'opens' directive in a module declaration.
 *
 * For example:
 *  *    opens   package-name;
 *    opens   package-name to module-name;
 * 
 *
 * @since 9
 */
public interface OpensTree extends DirectiveTree {

    /**
     * Returns the name of the package to be opened.
     * @return  the name of the package to be opened
     */
    ExpressionTree getPackageName();

    /**
     * Returns the names of the modules to which the package is opened,
     * or null, if the package is opened to all modules.
     *
     * @return the names of the modules to which the package is opened, or null
     */
    List getModuleNames();
}