001    /*
002     * Copyright 2010-2015 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    
017    package org.jetbrains.kotlin.descriptors;
018    
019    import org.jetbrains.annotations.NotNull;
020    
021    public enum Modality {
022        // THE ORDER OF ENTRIES MATTERS HERE
023        FINAL(false),
024        SEALED(false),
025        OPEN(true),
026        ABSTRACT(true);
027    
028        private final boolean overridable;
029    
030        Modality(boolean overridable) {
031            this.overridable = overridable;
032        }
033    
034        public boolean isOverridable() {
035            return overridable;
036        }
037    
038        @NotNull
039        public static Modality convertFromFlags(boolean _abstract, boolean open) {
040            if (_abstract) return ABSTRACT;
041            if (open) return OPEN;
042            return FINAL;
043        }
044    }