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/*
 * Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
 * derivative works of, display, perform, and distribute the Software and make,
 * use, sell, offer for sale, import, export, have made, and have sold the
 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 */
package com.oracle.graal.python.pegparser;

import java.util.EnumSet;

public enum FutureFeature {
    ANNOTATIONS(0x1000000),
    BARRY_AS_BDFL(0x400000);

    public final int flagValue;
    public static final int ALL_FLAGS;

    private static final FutureFeature[] VALUES = FutureFeature.values();
    static {
        int flags = 0;
        for (FutureFeature feat : VALUES) {
            flags |= feat.flagValue;
        }
        ALL_FLAGS = flags;
    }

    FutureFeature(int flagValue) {
        this.flagValue = flagValue;
    }

    public static EnumSet fromFlags(int flags) {
        EnumSet set = EnumSet.noneOf(FutureFeature.class);
        for (FutureFeature feat : VALUES) {
            if ((feat.flagValue & flags) != 0) {
                set.add(feat);
            }
        }
        return set;
    }
}