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.psi;
018    
019    import com.intellij.lang.ASTNode;
020    import com.intellij.psi.PsiElement;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    
024    public class JetPrefixExpression extends JetUnaryExpression {
025        public JetPrefixExpression(@NotNull ASTNode node) {
026            super(node);
027        }
028    
029        @Override
030        public void accept(@NotNull JetVisitorVoid visitor) {
031            visitor.visitPrefixExpression(this);
032        }
033    
034        @Override
035        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
036            return visitor.visitPrefixExpression(this, data);
037        }
038    
039        @Nullable @IfNotParsed
040        public JetExpression getBaseExpression() {
041            PsiElement expression = getOperationReference().getNextSibling();
042            while (expression != null && !(expression instanceof JetExpression)) {
043                expression = expression.getNextSibling();
044            }
045            return (JetExpression) expression;
046        }
047    }