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 abstract class FqNameBase {
022
023    protected FqNameBase() {
024        if (!(this instanceof FqName || this instanceof FqNameUnsafe)) {
025            throw new AssertionError("do not use this class directly");
026        }
027    }
028
029    @NotNull
030    protected abstract String asString();
031
032    @NotNull
033    private FqNameUnsafe toFqNameUnsafe() {
034        if (this instanceof FqName) {
035            return ((FqName) this).toUnsafe();
036        }
037        else if (this instanceof FqNameUnsafe) {
038            return ((FqNameUnsafe) this);
039        }
040        else {
041            throw new AssertionError();
042        }
043    }
044
045    public final boolean equalsTo(@NotNull FqName that) {
046        return equalsTo(that.toUnsafe());
047    }
048
049    public final boolean equalsTo(@NotNull FqNameUnsafe that) {
050        return toFqNameUnsafe().equals(that);
051    }
052
053    public final boolean equalsTo(@NotNull String that) {
054        return asString().equals(that);
055    }
056}