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.PsiReference;
021    import com.intellij.psi.PsiReferenceService;
022    import com.intellij.psi.impl.source.resolve.reference.ReferenceProvidersRegistry;
023    import org.jetbrains.annotations.NotNull;
024    import org.jetbrains.annotations.Nullable;
025    import org.jetbrains.jet.lexer.JetTokens;
026    
027    public class JetPropertyDelegate extends JetElementImpl {
028        public JetPropertyDelegate(@NotNull ASTNode node) {
029            super(node);
030        }
031    
032        @Nullable
033        public JetExpression getExpression() {
034            return findChildByClass(JetExpression.class);
035        }
036    
037        @Override
038        public void accept(@NotNull JetVisitorVoid visitor) {
039            visitor.visitPropertyDelegate(this);
040        }
041    
042        @Override
043        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
044            return visitor.visitPropertyDelegate(this, data);
045        }
046    
047        @NotNull
048        public ASTNode getByKeywordNode() {
049            //noinspection ConstantConditions
050            return getNode().findChildByType(JetTokens.BY_KEYWORD);
051        }
052    }