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.lang.resolve.name;
018    
019    import org.jetbrains.annotations.NotNull;
020    
021    public class LabelName {
022    
023        @NotNull
024        private final String name;
025    
026        public LabelName(@NotNull String name) {
027            if (name.startsWith("@")) {
028                // label may contain @, and may not contain
029                //throw new IllegalArgumentException("@ must be chopped: " + name);
030            }
031    
032            if (name.length() == 0) {
033                // label can be empty
034                //throw new IllegalStateException("label cannot be empty");
035            }
036    
037            this.name = name;
038        }
039    
040        public String getName() {
041            return name;
042        }
043    
044        @Override
045        public String toString() {
046            return name;
047        }
048    
049        @Override
050        public boolean equals(Object o) {
051            if (this == o) return true;
052            if (o == null || getClass() != o.getClass()) return false;
053    
054            LabelName name1 = (LabelName) o;
055    
056            if (!name.equals(name1.name)) return false;
057    
058            return true;
059        }
060    
061        @Override
062        public int hashCode() {
063            return name.hashCode();
064        }
065    }