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    
017    package org.jetbrains.jet.rt.signature;
018    
019    public enum JetSignatureVariance {
020        INVARIANT('='),
021        IN('-'),
022        OUT('+'),
023        ;
024        
025        private final char c;
026    
027        private JetSignatureVariance(char c) {
028            this.c = c;
029        }
030    
031        public char getChar() {
032            return c;
033        }
034        
035        public static JetSignatureVariance parseVariance(char c) {
036            switch (c) {
037                case '=': return INVARIANT;
038                case '+': return OUT;
039                case '-': return IN;
040                default: throw new IllegalStateException();
041            }
042        }
043    }