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    import org.jetbrains.jet.JetNodeTypes;
024    import org.jetbrains.jet.lexer.JetTokens;
025    
026    public class JetClassObject extends JetDeclarationImpl implements JetStatementExpression {
027        public JetClassObject(@NotNull ASTNode node) {
028            super(node);
029        }
030    
031        @Override
032        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
033            return visitor.visitClassObject(this, data);
034        }
035    
036        @NotNull
037        public JetObjectDeclaration getObjectDeclaration() {
038            JetObjectDeclaration objectDeclaration = (JetObjectDeclaration) findChildByType(JetNodeTypes.OBJECT_DECLARATION);
039    
040            assert objectDeclaration != null :
041                    String.format("It should be impossible to produce class object element without object child:\n %s",
042                                  this.getParent().getText());
043    
044            return objectDeclaration;
045        }
046    
047        @Nullable @IfNotParsed
048        public PsiElement getClassKeywordNode() {
049            ASTNode keywordNode = getNode().findChildByType(JetTokens.CLASS_KEYWORD);
050            return keywordNode != null ? keywordNode.getPsi() : null;
051        }
052    }