001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.lang.descriptors;
018
019public enum Modality {
020    // THE ORDER OF ENTRIES MATTERS HERE
021    FINAL(false),
022    OPEN(true),
023    ABSTRACT(true);
024
025    private final boolean overridable;
026
027    private Modality(boolean overridable) {
028        this.overridable = overridable;
029    }
030
031    public boolean isOverridable() {
032        return overridable;
033    }
034
035    public static Modality convertFromFlags(boolean _abstract, boolean open) {
036        if (_abstract) return ABSTRACT;
037        if (open) return OPEN;
038        return FINAL;
039    }
040}