001    /*
002     * Copyright 2010-2015 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.kotlin.psi;
018    
019    import org.jetbrains.annotations.NotNull;
020    
021    public class JetTreeVisitor<D> extends JetVisitor<Void, D> {
022        @Override
023        public Void visitJetElement(@NotNull JetElement element, D data) {
024            element.acceptChildren(this, data);
025            return null;
026        }
027    
028        @Override
029        public Void visitJetFile(@NotNull JetFile file, D data) {
030            super.visitJetFile(file, data);
031            file.acceptChildren(this, data);
032            return null;
033        }
034    }