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 com.intellij.psi.tree.IElementType;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.jet.JetNodeTypes;
025    
026    public class JetBinaryExpression extends JetExpressionImpl implements JetOperationExpression {
027        public JetBinaryExpression(@NotNull ASTNode node) {
028            super(node);
029        }
030    
031        @Override
032        public void accept(@NotNull JetVisitorVoid visitor) {
033            visitor.visitBinaryExpression(this);
034        }
035    
036        @Override
037        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
038            return visitor.visitBinaryExpression(this, data);
039        }
040    
041        @Nullable @IfNotParsed
042        public JetExpression getLeft() {
043            ASTNode node = getOperationReference().getNode().getTreePrev();
044            while (node != null) {
045                PsiElement psi = node.getPsi();
046                if (psi instanceof JetExpression) {
047                    return (JetExpression) psi;
048                }
049                node = node.getTreePrev();
050            }
051    
052            return null;
053        }
054    
055        @Nullable @IfNotParsed
056        public JetExpression getRight() {
057            ASTNode node = getOperationReference().getNode().getTreeNext();
058            while (node != null) {
059                PsiElement psi = node.getPsi();
060                if (psi instanceof JetExpression) {
061                    return (JetExpression) psi;
062                }
063                node = node.getTreeNext();
064            }
065    
066            return null;
067        }
068    
069        @Override
070        @NotNull
071        public JetSimpleNameExpression getOperationReference() {
072            return (JetSimpleNameExpression) findChildByType(JetNodeTypes.OPERATION_REFERENCE);
073        }
074    
075        public IElementType getOperationToken() {
076            return getOperationReference().getReferencedNameElementType();
077        }
078    }