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.resolve.name;
018
019import org.jetbrains.annotations.NotNull;
020
021public 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}