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 com.intellij.lang.ASTNode;
020    import com.intellij.psi.tree.IElementType;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.annotations.Nullable;
023    import org.jetbrains.kotlin.KtNodeTypes;
024    
025    public abstract class KtUnaryExpression extends KtExpressionImpl implements KtOperationExpression {
026        public KtUnaryExpression(ASTNode node) {
027            super(node);
028        }
029    
030        @Nullable @IfNotParsed
031        public abstract KtExpression getBaseExpression();
032    
033        @Override
034        @NotNull
035        public KtSimpleNameExpression getOperationReference() {
036            return (KtSimpleNameExpression) findChildByType(KtNodeTypes.OPERATION_REFERENCE);
037        }
038    
039        public IElementType getOperationToken() {
040            return getOperationReference().getReferencedNameElementType();
041        }
042    }