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.rt.signature;
018
019public 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}