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An unofficial backport of the JDK Classfile API to Java 17

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/*
 * Copyright (c) 2022, 2024, 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 io.github.dmlloyd.classfile;

import io.github.dmlloyd.classfile.extras.reflect.AccessFlag;
import java.util.Set;

import io.github.dmlloyd.classfile.impl.AccessFlagsImpl;

/**
 * Models the access flags for a class, method, or field.  Delivered as a
 * {@link ClassElement}, {@link FieldElement}, or {@link MethodElement}
 * when traversing the corresponding model type.
 *
 * @since 24
 */
public sealed interface AccessFlags
        extends ClassElement, MethodElement, FieldElement
        permits AccessFlagsImpl {

    /**
     * {@return the access flags, as a bit mask}
     */
    int flagsMask();

    /**
     * {@return the access flags}
     */
    Set flags();

    /**
     * {@return whether the specified flag is present}  The specified flag
     * should be a valid flag for the classfile location associated with this
     * element otherwise false is returned.
     * @param flag the flag to test
     */
    boolean has(AccessFlag flag);

    /**
     * {@return the classfile location for this element, which is either class,
     * method, or field}
     */
    AccessFlag.Location location();
}