/*
 * Copyright (c) 2005, 2006, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.lang.model.element;


/**
 * Represents a modifier on a program element such
 * as a class, method, or field.
 *
 * <p>Not all modifiers are applicable to all kinds of elements.
 * When two or more modifiers appear in the source code of an element
 * then it is customary, though not required, that they appear in the same
 * order as the constants listed in the detail section below.
 *
 * <p>Note that it is possible additional modifiers will be added in
 * future versions of the platform.
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @author Peter von der Ah&eacute;
 * @since 1.6
 */

public enum Modifier {

    // See JLS sections 8.1.1, 8.3.1, 8.4.3, 8.8.3, and 9.1.1.
    // java.lang.reflect.Modifier includes INTERFACE, but that's a VMism.

    /** The modifier {@code public} */          PUBLIC,
    /** The modifier {@code protected} */       PROTECTED,
    /** The modifier {@code private} */         PRIVATE,
    /** The modifier {@code abstract} */        ABSTRACT,
    /** The modifier {@code static} */          STATIC,
    /** The modifier {@code final} */           FINAL,
    /** The modifier {@code transient} */       TRANSIENT,
    /** The modifier {@code volatile} */        VOLATILE,
    /** The modifier {@code synchronized} */    SYNCHRONIZED,
    /** The modifier {@code native} */          NATIVE,
    /** The modifier {@code strictfp} */        STRICTFP;


    private String lowercase = null;    // modifier name in lowercase

    /**
     * Returns this modifier's name in lowercase.
     */
    public String toString() {
        if (lowercase == null) {
           lowercase = name().toLowerCase(java.util.Locale.US);
        }
        return lowercase;
    }
}
